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0
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1 /* The portable interface to event streams.
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2 Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Board of Trustees, University of Illinois.
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4 Copyright (C) 1995 Sun Microsystems, Inc.
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5 Copyright (C) 1995, 1996 Ben Wing.
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6
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7 This file is part of XEmacs.
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8
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9 XEmacs is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 2, or (at your option) any
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12 later version.
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13
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14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with XEmacs; see the file COPYING. If not, write to
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21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 Boston, MA 02111-1307, USA. */
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23
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24 /* Synched up with: Not in FSF. */
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25
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26 /* This file has been Mule-ized. */
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27
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28 /*
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29 * DANGER!!
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30 *
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31 * If you ever change ANYTHING in this file, you MUST run the
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32 * testcases at the end to make sure that you haven't changed
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33 * the semantics of recent-keys, last-input-char, or keyboard
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34 * macros. You'd be surprised how easy it is to break this.
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35 *
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36 */
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37
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185
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38 /* TODO:
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39 This stuff is way too hard to maintain - needs rework.
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40
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412
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41 (global-set-key "\C-p" global-map) causes a crash - need recursion check.
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42
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185
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43 C-x @ h <scrollbar-drag> x causes a crash.
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44
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45 The command builder should deal only with key and button events.
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46 Other command events should be able to come in the MIDDLE of a key
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47 sequence, without disturbing the key sequence composition, or the
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48 command builder structure representing it.
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49
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380
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50 Someone should rethink universal-argument and figure out how an
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185
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51 arbitrary command can influence the next command (universal-argument
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380
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52 or universal-coding-system-argument) or the next key (hyperify).
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185
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53
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54 Both C-h and Help in the middle of a key sequence should trigger
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55 prefix-help-command. help-char is stupid. Maybe we need
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56 keymap-of-last-resort?
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57
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58 After prefix-help is run, one should be able to CONTINUE TYPING,
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59 instead of RETYPING, the key sequence.
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60 */
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61
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0
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62 #include <config.h>
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63 #include "lisp.h"
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64
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412
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65 #ifdef HAVE_X_WINDOWS
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66 #include "console-x.h" /* for menu accelerators ... */
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67 #include "gui-x.h"
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68 #include "../lwlib/lwlib.h"
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69 #else
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70 #define lw_menu_active 0
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71 #endif
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72
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272
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73 #include "blocktype.h"
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0
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74 #include "buffer.h"
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75 #include "commands.h"
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76 #include "device.h"
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77 #include "elhash.h"
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78 #include "events.h"
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79 #include "frame.h"
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80 #include "insdel.h" /* for buffer_reset_changes */
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81 #include "keymap.h"
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82 #include "lstream.h"
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83 #include "macros.h" /* for defining_keyboard_macro */
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412
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84 #include "opaque.h"
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0
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85 #include "process.h"
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86 #include "window.h"
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87
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88 #include "sysdep.h" /* init_poll_for_quit() */
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89 #include "syssignal.h" /* SIGCHLD, etc. */
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251
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90 #include "sysfile.h"
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0
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91 #include "systime.h" /* to set Vlast_input_time */
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92
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100
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93 #include "events-mod.h"
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259
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94 #ifdef FILE_CODING
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95 #include "file-coding.h"
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70
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96 #endif
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97
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0
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98 #include <errno.h>
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99
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100 /* The number of keystrokes between auto-saves. */
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101 static int auto_save_interval;
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102
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103 Lisp_Object Qundefined_keystroke_sequence;
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104
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412
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105 Lisp_Object Qcommand_execute;
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106
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0
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107 Lisp_Object Qcommand_event_p;
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108
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109 /* Hooks to run before and after each command. */
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110 Lisp_Object Vpre_command_hook, Vpost_command_hook;
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111 Lisp_Object Qpre_command_hook, Qpost_command_hook;
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112
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113 /* Hook run when XEmacs is about to be idle. */
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114 Lisp_Object Qpre_idle_hook, Vpre_idle_hook;
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115
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72
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116 /* Control gratuitous keyboard focus throwing. */
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117 int focus_follows_mouse;
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118
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412
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119 #ifdef ILL_CONCEIVED_HOOK
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0
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120 /* Hook run after a command if there's no more input soon. */
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121 Lisp_Object Qpost_command_idle_hook, Vpost_command_idle_hook;
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122
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123 /* Delay time in microseconds before running post-command-idle-hook. */
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124 int post_command_idle_delay;
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412
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125 #endif /* ILL_CONCEIVED_HOOK */
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126
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127 #ifdef DEFERRED_ACTION_CRAP
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0
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128 /* List of deferred actions to be performed at a later time.
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129 The precise format isn't relevant here; we just check whether it is nil. */
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130 Lisp_Object Vdeferred_action_list;
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131
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132 /* Function to call to handle deferred actions, when there are any. */
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133 Lisp_Object Vdeferred_action_function;
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134 Lisp_Object Qdeferred_action_function;
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412
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135 #endif /* DEFERRED_ACTION_CRAP */
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0
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136
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137 /* Non-nil disable property on a command means
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138 do not execute it; call disabled-command-hook's value instead. */
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139 Lisp_Object Qdisabled, Vdisabled_command_hook;
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140
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272
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141 EXFUN (Fnext_command_event, 2);
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142
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0
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143 static void pre_command_hook (void);
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144 static void post_command_hook (void);
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145
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146 /* Last keyboard or mouse input event read as a command. */
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147 Lisp_Object Vlast_command_event;
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148
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149 /* The nearest ASCII equivalent of the above. */
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150 Lisp_Object Vlast_command_char;
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151
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152 /* Last keyboard or mouse event read for any purpose. */
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153 Lisp_Object Vlast_input_event;
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154
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155 /* The nearest ASCII equivalent of the above. */
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156 Lisp_Object Vlast_input_char;
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157
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158 Lisp_Object Vcurrent_mouse_event;
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159
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290
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160 /* This is fbound in cmdloop.el, see the commentary there */
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161 Lisp_Object Qcancel_mode_internal;
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162
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0
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163 /* If not Qnil, event objects to be read as the next command input */
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164 Lisp_Object Vunread_command_events;
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165 Lisp_Object Vunread_command_event; /* obsoleteness support */
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166
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167 static Lisp_Object Qunread_command_events, Qunread_command_event;
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168
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169 /* Previous command, represented by a Lisp object.
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412
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170 Does not include prefix commands and arg setting commands */
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0
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171 Lisp_Object Vlast_command;
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172
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173 /* If a command sets this, the value goes into
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412
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174 previous-command for the next command. */
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0
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175 Lisp_Object Vthis_command;
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176
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177 /* The value of point when the last command was executed. */
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178 Bufpos last_point_position;
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179
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180 /* The frame that was current when the last command was started. */
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181 Lisp_Object Vlast_selected_frame;
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173
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182
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0
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183 /* The buffer that was current when the last command was started. */
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184 Lisp_Object last_point_position_buffer;
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173
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185
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185
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186 /* A (16bit . 16bit) representation of the time of the last-command-event. */
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0
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187 Lisp_Object Vlast_input_time;
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188
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211
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189 /* A (16bit 16bit usec) representation of the time
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190 of the last-command-event. */
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191 Lisp_Object Vlast_command_event_time;
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192
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0
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193 /* Character to recognize as the help char. */
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194 Lisp_Object Vhelp_char;
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195
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196 /* Form to execute when help char is typed. */
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197 Lisp_Object Vhelp_form;
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198
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185
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199 /* Command to run when the help character follows a prefix key. */
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200 Lisp_Object Vprefix_help_command;
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201
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0
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202 /* Flag to tell QUIT that some interesting occurrence (e.g. a keypress)
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203 may have happened. */
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204 volatile int something_happened;
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205
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206 /* Hash table to translate keysyms through */
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207 Lisp_Object Vkeyboard_translate_table;
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208
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209 /* If control-meta-super-shift-X is undefined, try control-meta-super-x */
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210 Lisp_Object Vretry_undefined_key_binding_unshifted;
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211 Lisp_Object Qretry_undefined_key_binding_unshifted;
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212
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70
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213 #ifdef HAVE_XIM
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214 /* If composed input is undefined, use self-insert-char */
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215 Lisp_Object Vcomposed_character_default_binding;
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216 #endif /* HAVE_XIM */
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217
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0
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218 /* Console that corresponds to our controlling terminal */
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219 Lisp_Object Vcontrolling_terminal;
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220
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221 /* An event (actually an event chain linked through event_next) or Qnil.
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222 */
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223 Lisp_Object Vthis_command_keys;
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224 Lisp_Object Vthis_command_keys_tail;
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225
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226 /* #### kludge! */
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227 Lisp_Object Qauto_show_make_point_visible;
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228
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229 /* File in which we write all commands we read; an lstream */
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230 static Lisp_Object Vdribble_file;
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231
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153
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232 /* Recent keys ring location; a vector of events or nil-s */
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233 Lisp_Object Vrecent_keys_ring;
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234 int recent_keys_ring_size;
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235 int recent_keys_ring_index;
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236
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187
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237 /* Boolean specifying whether keystrokes should be added to
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238 recent-keys. */
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239 int inhibit_input_event_recording;
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240
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412
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241 /* prefix key(s) that must match in order to activate menu.
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242 This is ugly. fix me.
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243 */
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244 Lisp_Object Vmenu_accelerator_prefix;
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245
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246 /* list of modifier keys to match accelerator for top level menus */
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247 Lisp_Object Vmenu_accelerator_modifiers;
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248
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249 /* whether menu accelerators are enabled */
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250 Lisp_Object Vmenu_accelerator_enabled;
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251
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252 /* keymap for auxiliary menu accelerator functions */
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253 Lisp_Object Vmenu_accelerator_map;
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254
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255 Lisp_Object Qmenu_force;
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256 Lisp_Object Qmenu_fallback;
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257 Lisp_Object Qmenu_quit;
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258 Lisp_Object Qmenu_up;
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259 Lisp_Object Qmenu_down;
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260 Lisp_Object Qmenu_left;
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261 Lisp_Object Qmenu_right;
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262 Lisp_Object Qmenu_select;
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263 Lisp_Object Qmenu_escape;
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398
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264
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175
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265 /* this is in keymap.c */
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266 extern Lisp_Object Fmake_keymap (Lisp_Object name);
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267
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0
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268 #ifdef DEBUG_XEMACS
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269 int debug_emacs_events;
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185
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270
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271 static void
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272 external_debugging_print_event (char *event_description, Lisp_Object event)
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273 {
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274 write_c_string ("(", Qexternal_debugging_output);
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275 write_c_string (event_description, Qexternal_debugging_output);
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276 write_c_string (") ", Qexternal_debugging_output);
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277 print_internal (event, Qexternal_debugging_output, 1);
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278 write_c_string ("\n", Qexternal_debugging_output);
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279 }
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280 #define DEBUG_PRINT_EMACS_EVENT(event_description, event) do { \
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281 if (debug_emacs_events) \
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282 external_debugging_print_event (event_description, event); \
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283 } while (0)
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284 #else
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285 #define DEBUG_PRINT_EMACS_EVENT(string, event)
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0
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286 #endif
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287
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288
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289 /* The callback routines for the window system or terminal driver */
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290 struct event_stream *event_stream;
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291
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412
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292 /* This structure is what we use to encapsulate the state of a command sequence
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293 being composed; key events are executed by adding themselves to the command
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294 builder; if the command builder is then complete (does not still represent
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295 a prefix key sequence) it executes the corresponding command.
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296 */
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297 struct command_builder
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298 {
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299 struct lcrecord_header header;
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300 Lisp_Object console; /* back pointer to the console this command
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301 builder is for */
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302 /* Qnil, or a Lisp_Event representing the first event read
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303 * after the last command completed. Threaded. */
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304 /* #### NYI */
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305 Lisp_Object prefix_events;
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306 /* Qnil, or a Lisp_Event representing event in the current
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307 * keymap-lookup sequence. Subsequent events are threaded via
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308 * the event's next slot */
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309 Lisp_Object current_events;
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310 /* Last elt of above */
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311 Lisp_Object most_current_event;
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312 /* Last elt before function map code took over. What this means is:
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313 All prefixes up to (but not including) this event have non-nil
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314 bindings, but the prefix including this event has a nil binding.
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315 Any events in the chain after this one were read solely because
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316 we're part of a possible function key. If we end up with
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317 something that's not part of a possible function key, we have to
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318 unread all of those events. */
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319 Lisp_Object last_non_munged_event;
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320 /* One set of values for function-key-map, one for key-translation-map */
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321 struct munging_key_translation
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322 {
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323 /* First event that can begin a possible function key sequence
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324 (to be translated according to function-key-map). Normally
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325 this is the first event in the chain. However, once we've
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326 translated a sequence through function-key-map, this will point
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327 to the first event after the translated sequence: we don't ever
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328 want to translate any events twice through function-key-map, or
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329 things could get really screwed up (e.g. if the user created a
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330 translation loop). If this is nil, then the next-read event is
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331 the first that can begin a function key sequence. */
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332 Lisp_Object first_mungeable_event;
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333 } munge_me[2];
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334
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335 Bufbyte *echo_buf;
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336 Bytecount echo_buf_length; /* size of echo_buf */
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337 Bytecount echo_buf_index; /* index into echo_buf
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338 * -1 before doing echoing for new cmd */
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339 /* Self-insert-command is magic in that it doesn't always push an undo-
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340 boundary: up to 20 consecutive self-inserts can happen before an undo-
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341 boundary is pushed. This variable is that counter.
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342 */
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343 int self_insert_countdown;
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344 };
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345
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0
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346 static void echo_key_event (struct command_builder *, Lisp_Object event);
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347 static void maybe_kbd_translate (Lisp_Object event);
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348
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349 /* This structure is basically a typeahead queue: things like
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350 wait-reading-process-output will delay the execution of
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351 keyboard and mouse events by pushing them here.
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352
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353 Chained through event_next()
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354 command_event_queue_tail is a pointer to the last-added element.
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355 */
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356 static Lisp_Object command_event_queue;
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357 static Lisp_Object command_event_queue_tail;
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358
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359 /* Nonzero means echo unfinished commands after this many seconds of pause. */
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211
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360 static Lisp_Object Vecho_keystrokes;
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0
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361
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362 /* The number of keystrokes since the last auto-save. */
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363 static int keystrokes_since_auto_save;
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364
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365 /* Used by the C-g signal handler so that it will never "hard quit"
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366 when waiting for an event. Otherwise holding down C-g could
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367 cause a suspension back to the shell, which is generally
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368 undesirable. (#### This doesn't fully work.) */
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369
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370 int emacs_is_blocking;
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371
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108
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372 /* Handlers which run during sit-for, sleep-for and accept-process-output
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373 are not allowed to recursively call these routines. We record here
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374 if we are in that situation. */
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375
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376 static Lisp_Object recursive_sit_for;
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377
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378
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0
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379
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380 /**********************************************************************/
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381 /* Command-builder object */
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382 /**********************************************************************/
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383
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384 #define XCOMMAND_BUILDER(x) \
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385 XRECORD (x, command_builder, struct command_builder)
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|
386 #define XSETCOMMAND_BUILDER(x, p) XSETRECORD (x, p, command_builder)
|
|
|
387 #define COMMAND_BUILDERP(x) RECORDP (x, command_builder)
|
|
412
|
388 #define GC_COMMAND_BUILDERP(x) GC_RECORDP (x, command_builder)
|
|
0
|
389 #define CHECK_COMMAND_BUILDER(x) CHECK_RECORD (x, command_builder)
|
|
|
390
|
|
|
391 static Lisp_Object
|
|
412
|
392 mark_command_builder (Lisp_Object obj, void (*markobj) (Lisp_Object))
|
|
0
|
393 {
|
|
|
394 struct command_builder *builder = XCOMMAND_BUILDER (obj);
|
|
412
|
395 markobj (builder->prefix_events);
|
|
|
396 markobj (builder->current_events);
|
|
|
397 markobj (builder->most_current_event);
|
|
|
398 markobj (builder->last_non_munged_event);
|
|
|
399 markobj (builder->munge_me[0].first_mungeable_event);
|
|
|
400 markobj (builder->munge_me[1].first_mungeable_event);
|
|
0
|
401 return builder->console;
|
|
|
402 }
|
|
|
403
|
|
|
404 static void
|
|
|
405 finalize_command_builder (void *header, int for_disksave)
|
|
|
406 {
|
|
|
407 if (!for_disksave)
|
|
|
408 {
|
|
185
|
409 xfree (((struct command_builder *) header)->echo_buf);
|
|
|
410 ((struct command_builder *) header)->echo_buf = 0;
|
|
0
|
411 }
|
|
|
412 }
|
|
|
413
|
|
272
|
414 DEFINE_LRECORD_IMPLEMENTATION ("command-builder", command_builder,
|
|
|
415 mark_command_builder, internal_object_printer,
|
|
420
|
416 finalize_command_builder, 0, 0, 0,
|
|
272
|
417 struct command_builder);
|
|
|
418
|
|
0
|
419 static void
|
|
|
420 reset_command_builder_event_chain (struct command_builder *builder)
|
|
|
421 {
|
|
|
422 builder->prefix_events = Qnil;
|
|
|
423 builder->current_events = Qnil;
|
|
|
424 builder->most_current_event = Qnil;
|
|
|
425 builder->last_non_munged_event = Qnil;
|
|
|
426 builder->munge_me[0].first_mungeable_event = Qnil;
|
|
|
427 builder->munge_me[1].first_mungeable_event = Qnil;
|
|
|
428 }
|
|
|
429
|
|
|
430 Lisp_Object
|
|
|
431 allocate_command_builder (Lisp_Object console)
|
|
|
432 {
|
|
272
|
433 Lisp_Object builder_obj;
|
|
0
|
434 struct command_builder *builder =
|
|
398
|
435 alloc_lcrecord_type (struct command_builder, &lrecord_command_builder);
|
|
0
|
436
|
|
|
437 builder->console = console;
|
|
|
438 reset_command_builder_event_chain (builder);
|
|
|
439 builder->echo_buf_length = 300; /* #### Kludge */
|
|
185
|
440 builder->echo_buf = xnew_array (Bufbyte, builder->echo_buf_length);
|
|
0
|
441 builder->echo_buf[0] = 0;
|
|
|
442 builder->echo_buf_index = -1;
|
|
|
443 builder->echo_buf_index = -1;
|
|
|
444 builder->self_insert_countdown = 0;
|
|
|
445
|
|
|
446 XSETCOMMAND_BUILDER (builder_obj, builder);
|
|
|
447 return builder_obj;
|
|
|
448 }
|
|
|
449
|
|
|
450 static void
|
|
|
451 command_builder_append_event (struct command_builder *builder,
|
|
|
452 Lisp_Object event)
|
|
|
453 {
|
|
|
454 assert (EVENTP (event));
|
|
|
455
|
|
|
456 if (EVENTP (builder->most_current_event))
|
|
|
457 XSET_EVENT_NEXT (builder->most_current_event, event);
|
|
|
458 else
|
|
|
459 builder->current_events = event;
|
|
|
460
|
|
|
461 builder->most_current_event = event;
|
|
|
462 if (NILP (builder->munge_me[0].first_mungeable_event))
|
|
|
463 builder->munge_me[0].first_mungeable_event = event;
|
|
|
464 if (NILP (builder->munge_me[1].first_mungeable_event))
|
|
|
465 builder->munge_me[1].first_mungeable_event = event;
|
|
|
466 }
|
|
|
467
|
|
|
468
|
|
|
469 /**********************************************************************/
|
|
|
470 /* Low-level interfaces onto event methods */
|
|
|
471 /**********************************************************************/
|
|
|
472
|
|
|
473 enum event_stream_operation
|
|
|
474 {
|
|
|
475 EVENT_STREAM_PROCESS,
|
|
|
476 EVENT_STREAM_TIMEOUT,
|
|
|
477 EVENT_STREAM_CONSOLE,
|
|
|
478 EVENT_STREAM_READ
|
|
|
479 };
|
|
|
480
|
|
|
481 static void
|
|
|
482 check_event_stream_ok (enum event_stream_operation op)
|
|
|
483 {
|
|
|
484 if (!event_stream && noninteractive)
|
|
|
485 {
|
|
|
486 switch (op)
|
|
|
487 {
|
|
|
488 case EVENT_STREAM_PROCESS:
|
|
|
489 error ("Can't start subprocesses in -batch mode");
|
|
|
490 case EVENT_STREAM_TIMEOUT:
|
|
|
491 error ("Can't add timeouts in -batch mode");
|
|
|
492 case EVENT_STREAM_CONSOLE:
|
|
|
493 error ("Can't add consoles in -batch mode");
|
|
|
494 case EVENT_STREAM_READ:
|
|
|
495 error ("Can't read events in -batch mode");
|
|
|
496 default:
|
|
|
497 abort ();
|
|
|
498 }
|
|
|
499 }
|
|
|
500 else if (!event_stream)
|
|
|
501 {
|
|
|
502 error ("event-stream callbacks not initialized (internal error?)");
|
|
|
503 }
|
|
|
504 }
|
|
|
505
|
|
272
|
506 static int
|
|
0
|
507 event_stream_event_pending_p (int user)
|
|
|
508 {
|
|
272
|
509 return event_stream && event_stream->event_pending_p (user);
|
|
0
|
510 }
|
|
|
511
|
|
|
512 static int
|
|
412
|
513 maybe_read_quit_event (struct Lisp_Event *event)
|
|
0
|
514 {
|
|
|
515 /* A C-g that came from `sigint_happened' will always come from the
|
|
|
516 controlling terminal. If that doesn't exist, however, then the
|
|
|
517 user manually sent us a SIGINT, and we pretend the C-g came from
|
|
|
518 the selected console. */
|
|
|
519 struct console *con;
|
|
|
520
|
|
|
521 if (CONSOLEP (Vcontrolling_terminal) &&
|
|
|
522 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
|
|
|
523 con = XCONSOLE (Vcontrolling_terminal);
|
|
|
524 else
|
|
|
525 con = XCONSOLE (Fselected_console ());
|
|
|
526
|
|
|
527 if (sigint_happened)
|
|
|
528 {
|
|
|
529 int ch = CONSOLE_QUIT_CHAR (con);
|
|
|
530 sigint_happened = 0;
|
|
|
531 Vquit_flag = Qnil;
|
|
263
|
532 character_to_event (ch, event, con, 1, 1);
|
|
0
|
533 event->channel = make_console (con);
|
|
|
534 return 1;
|
|
|
535 }
|
|
|
536 return 0;
|
|
|
537 }
|
|
|
538
|
|
|
539 void
|
|
412
|
540 event_stream_next_event (struct Lisp_Event *event)
|
|
0
|
541 {
|
|
272
|
542 Lisp_Object event_obj;
|
|
0
|
543
|
|
|
544 check_event_stream_ok (EVENT_STREAM_READ);
|
|
|
545
|
|
|
546 XSETEVENT (event_obj, event);
|
|
|
547 zero_event (event);
|
|
|
548 /* If C-g was pressed, treat it as a character to be read.
|
|
|
549 Note that if C-g was pressed while we were blocking,
|
|
|
550 the SIGINT signal handler will be called. It will
|
|
|
551 set Vquit_flag and write a byte on our "fake pipe",
|
|
|
552 which will unblock us. */
|
|
|
553 if (maybe_read_quit_event (event))
|
|
|
554 {
|
|
185
|
555 DEBUG_PRINT_EMACS_EVENT ("SIGINT", event_obj);
|
|
0
|
556 return;
|
|
|
557 }
|
|
|
558
|
|
|
559 /* If a longjmp() happens in the callback, we're screwed.
|
|
|
560 Let's hope it doesn't. I think the code here is fairly
|
|
|
561 clean and doesn't do this. */
|
|
|
562 emacs_is_blocking = 1;
|
|
282
|
563 #if 0
|
|
|
564 /* Do this if the poll-for-quit timer seems to be taking too
|
|
|
565 much CPU time when idle ... */
|
|
0
|
566 reset_poll_for_quit ();
|
|
282
|
567 #endif
|
|
0
|
568 event_stream->next_event_cb (event);
|
|
282
|
569 #if 0
|
|
0
|
570 init_poll_for_quit ();
|
|
282
|
571 #endif
|
|
0
|
572 emacs_is_blocking = 0;
|
|
|
573
|
|
|
574 #ifdef DEBUG_XEMACS
|
|
185
|
575 /* timeout events have more info set later, so
|
|
|
576 print the event out in next_event_internal(). */
|
|
|
577 if (event->event_type != timeout_event)
|
|
|
578 DEBUG_PRINT_EMACS_EVENT ("real", event_obj);
|
|
0
|
579 #endif
|
|
|
580 maybe_kbd_translate (event_obj);
|
|
|
581 }
|
|
|
582
|
|
|
583 void
|
|
412
|
584 event_stream_handle_magic_event (struct Lisp_Event *event)
|
|
0
|
585 {
|
|
|
586 check_event_stream_ok (EVENT_STREAM_READ);
|
|
|
587 event_stream->handle_magic_event_cb (event);
|
|
|
588 }
|
|
|
589
|
|
|
590 static int
|
|
|
591 event_stream_add_timeout (EMACS_TIME timeout)
|
|
|
592 {
|
|
|
593 check_event_stream_ok (EVENT_STREAM_TIMEOUT);
|
|
|
594 return event_stream->add_timeout_cb (timeout);
|
|
|
595 }
|
|
|
596
|
|
|
597 static void
|
|
|
598 event_stream_remove_timeout (int id)
|
|
|
599 {
|
|
|
600 check_event_stream_ok (EVENT_STREAM_TIMEOUT);
|
|
|
601 event_stream->remove_timeout_cb (id);
|
|
|
602 }
|
|
|
603
|
|
|
604 void
|
|
|
605 event_stream_select_console (struct console *con)
|
|
|
606 {
|
|
|
607 check_event_stream_ok (EVENT_STREAM_CONSOLE);
|
|
|
608 if (!con->input_enabled)
|
|
|
609 {
|
|
|
610 event_stream->select_console_cb (con);
|
|
|
611 con->input_enabled = 1;
|
|
|
612 }
|
|
|
613 }
|
|
|
614
|
|
|
615 void
|
|
|
616 event_stream_unselect_console (struct console *con)
|
|
|
617 {
|
|
|
618 check_event_stream_ok (EVENT_STREAM_CONSOLE);
|
|
|
619 if (con->input_enabled)
|
|
|
620 {
|
|
|
621 event_stream->unselect_console_cb (con);
|
|
|
622 con->input_enabled = 0;
|
|
|
623 }
|
|
|
624 }
|
|
|
625
|
|
|
626 void
|
|
412
|
627 event_stream_select_process (struct Lisp_Process *proc)
|
|
0
|
628 {
|
|
|
629 check_event_stream_ok (EVENT_STREAM_PROCESS);
|
|
|
630 if (!get_process_selected_p (proc))
|
|
|
631 {
|
|
|
632 event_stream->select_process_cb (proc);
|
|
|
633 set_process_selected_p (proc, 1);
|
|
|
634 }
|
|
|
635 }
|
|
|
636
|
|
|
637 void
|
|
412
|
638 event_stream_unselect_process (struct Lisp_Process *proc)
|
|
0
|
639 {
|
|
|
640 check_event_stream_ok (EVENT_STREAM_PROCESS);
|
|
|
641 if (get_process_selected_p (proc))
|
|
|
642 {
|
|
|
643 event_stream->unselect_process_cb (proc);
|
|
|
644 set_process_selected_p (proc, 0);
|
|
|
645 }
|
|
|
646 }
|
|
|
647
|
|
263
|
648 USID
|
|
|
649 event_stream_create_stream_pair (void* inhandle, void* outhandle,
|
|
|
650 Lisp_Object* instream, Lisp_Object* outstream, int flags)
|
|
|
651 {
|
|
|
652 check_event_stream_ok (EVENT_STREAM_PROCESS);
|
|
|
653 return event_stream->create_stream_pair_cb
|
|
|
654 (inhandle, outhandle, instream, outstream, flags);
|
|
|
655 }
|
|
|
656
|
|
|
657 USID
|
|
|
658 event_stream_delete_stream_pair (Lisp_Object instream, Lisp_Object outstream)
|
|
|
659 {
|
|
|
660 check_event_stream_ok (EVENT_STREAM_PROCESS);
|
|
|
661 return event_stream->delete_stream_pair_cb (instream, outstream);
|
|
|
662 }
|
|
|
663
|
|
0
|
664 void
|
|
|
665 event_stream_quit_p (void)
|
|
|
666 {
|
|
|
667 if (event_stream)
|
|
|
668 event_stream->quit_p_cb ();
|
|
|
669 }
|
|
|
670
|
|
|
671
|
|
|
672
|
|
|
673 /**********************************************************************/
|
|
|
674 /* Character prompting */
|
|
|
675 /**********************************************************************/
|
|
|
676
|
|
|
677 static void
|
|
|
678 echo_key_event (struct command_builder *command_builder,
|
|
|
679 Lisp_Object event)
|
|
|
680 {
|
|
|
681 /* This function can GC */
|
|
|
682 char buf[255];
|
|
|
683 Bytecount buf_index = command_builder->echo_buf_index;
|
|
|
684 Bufbyte *e;
|
|
|
685 Bytecount len;
|
|
|
686
|
|
|
687 if (buf_index < 0)
|
|
|
688 {
|
|
|
689 buf_index = 0; /* We're echoing now */
|
|
|
690 clear_echo_area (selected_frame (), Qnil, 0);
|
|
|
691 }
|
|
|
692
|
|
|
693 format_event_object (buf, XEVENT (event), 1);
|
|
|
694 len = strlen (buf);
|
|
173
|
695
|
|
0
|
696 if (len + buf_index + 4 > command_builder->echo_buf_length)
|
|
|
697 return;
|
|
|
698 e = command_builder->echo_buf + buf_index;
|
|
|
699 memcpy (e, buf, len);
|
|
|
700 e += len;
|
|
|
701
|
|
|
702 e[0] = ' ';
|
|
|
703 e[1] = '-';
|
|
|
704 e[2] = ' ';
|
|
|
705 e[3] = 0;
|
|
|
706
|
|
|
707 command_builder->echo_buf_index = buf_index + len + 1;
|
|
|
708 }
|
|
|
709
|
|
|
710 static void
|
|
|
711 regenerate_echo_keys_from_this_command_keys (struct command_builder *
|
|
|
712 builder)
|
|
|
713 {
|
|
|
714 Lisp_Object event;
|
|
|
715
|
|
|
716 builder->echo_buf_index = 0;
|
|
|
717
|
|
|
718 EVENT_CHAIN_LOOP (event, Vthis_command_keys)
|
|
|
719 echo_key_event (builder, event);
|
|
|
720 }
|
|
|
721
|
|
|
722 static void
|
|
|
723 maybe_echo_keys (struct command_builder *command_builder, int no_snooze)
|
|
|
724 {
|
|
|
725 /* This function can GC */
|
|
211
|
726 double echo_keystrokes;
|
|
0
|
727 struct frame *f = selected_frame ();
|
|
|
728 /* Message turns off echoing unless more keystrokes turn it on again. */
|
|
|
729 if (echo_area_active (f) && !EQ (Qcommand, echo_area_status (f)))
|
|
|
730 return;
|
|
|
731
|
|
211
|
732 if (INTP (Vecho_keystrokes) || FLOATP (Vecho_keystrokes))
|
|
|
733 echo_keystrokes = extract_float (Vecho_keystrokes);
|
|
|
734 else
|
|
|
735 echo_keystrokes = 0;
|
|
|
736
|
|
173
|
737 if (minibuf_level == 0
|
|
211
|
738 && echo_keystrokes > 0.0
|
|
412
|
739 && !lw_menu_active)
|
|
0
|
740 {
|
|
|
741 if (!no_snooze)
|
|
|
742 {
|
|
|
743 /* #### C-g here will cause QUIT. Setting dont_check_for_quit
|
|
|
744 doesn't work. See check_quit. */
|
|
211
|
745 if (NILP (Fsit_for (Vecho_keystrokes, Qnil)))
|
|
0
|
746 /* input came in, so don't echo. */
|
|
|
747 return;
|
|
|
748 }
|
|
|
749
|
|
|
750 echo_area_message (f, command_builder->echo_buf, Qnil, 0,
|
|
|
751 /* not echo_buf_index. That doesn't include
|
|
|
752 the terminating " - ". */
|
|
|
753 strlen ((char *) command_builder->echo_buf),
|
|
|
754 Qcommand);
|
|
|
755 }
|
|
|
756 }
|
|
|
757
|
|
|
758 static void
|
|
|
759 reset_key_echo (struct command_builder *command_builder,
|
|
|
760 int remove_echo_area_echo)
|
|
|
761 {
|
|
|
762 /* This function can GC */
|
|
|
763 struct frame *f = selected_frame ();
|
|
|
764
|
|
|
765 command_builder->echo_buf_index = -1;
|
|
|
766
|
|
|
767 if (remove_echo_area_echo)
|
|
|
768 clear_echo_area (f, Qcommand, 0);
|
|
|
769 }
|
|
|
770
|
|
|
771
|
|
|
772 /**********************************************************************/
|
|
|
773 /* random junk */
|
|
|
774 /**********************************************************************/
|
|
|
775
|
|
|
776 static void
|
|
|
777 maybe_kbd_translate (Lisp_Object event)
|
|
|
778 {
|
|
|
779 Emchar c;
|
|
|
780 int did_translate = 0;
|
|
|
781
|
|
|
782 if (XEVENT_TYPE (event) != key_press_event)
|
|
|
783 return;
|
|
380
|
784 if (!HASH_TABLEP (Vkeyboard_translate_table))
|
|
0
|
785 return;
|
|
380
|
786 if (EQ (Fhash_table_count (Vkeyboard_translate_table), Qzero))
|
|
0
|
787 return;
|
|
|
788
|
|
|
789 c = event_to_character (XEVENT (event), 0, 0, 0);
|
|
|
790 if (c != -1)
|
|
|
791 {
|
|
|
792 Lisp_Object traduit = Fgethash (make_char (c), Vkeyboard_translate_table,
|
|
|
793 Qnil);
|
|
|
794 if (!NILP (traduit) && SYMBOLP (traduit))
|
|
|
795 {
|
|
|
796 XEVENT (event)->event.key.keysym = traduit;
|
|
|
797 XEVENT (event)->event.key.modifiers = 0;
|
|
|
798 did_translate = 1;
|
|
|
799 }
|
|
|
800 else if (CHARP (traduit))
|
|
|
801 {
|
|
412
|
802 struct Lisp_Event ev2;
|
|
0
|
803
|
|
|
804 /* This used to call Fcharacter_to_event() directly into EVENT,
|
|
|
805 but that can eradicate timestamps and other such stuff.
|
|
|
806 This way is safer. */
|
|
|
807 zero_event (&ev2);
|
|
|
808 character_to_event (XCHAR (traduit), &ev2,
|
|
263
|
809 XCONSOLE (EVENT_CHANNEL (XEVENT (event))), 1, 1);
|
|
0
|
810 XEVENT (event)->event.key.keysym = ev2.event.key.keysym;
|
|
|
811 XEVENT (event)->event.key.modifiers = ev2.event.key.modifiers;
|
|
|
812 did_translate = 1;
|
|
|
813 }
|
|
|
814 }
|
|
|
815
|
|
|
816 if (!did_translate)
|
|
|
817 {
|
|
|
818 Lisp_Object traduit = Fgethash (XEVENT (event)->event.key.keysym,
|
|
|
819 Vkeyboard_translate_table, Qnil);
|
|
|
820 if (!NILP (traduit) && SYMBOLP (traduit))
|
|
|
821 {
|
|
|
822 XEVENT (event)->event.key.keysym = traduit;
|
|
|
823 did_translate = 1;
|
|
|
824 }
|
|
|
825 }
|
|
|
826
|
|
|
827 #ifdef DEBUG_XEMACS
|
|
185
|
828 if (did_translate)
|
|
|
829 DEBUG_PRINT_EMACS_EVENT ("->keyboard-translate-table", event);
|
|
0
|
830 #endif
|
|
|
831 }
|
|
|
832
|
|
|
833 /* NB: The following auto-save stuff is in keyboard.c in FSFmacs, and
|
|
|
834 keystrokes_since_auto_save is equivalent to the difference between
|
|
|
835 num_nonmacro_input_chars and last_auto_save. */
|
|
|
836
|
|
|
837 /* When an auto-save happens, record the "time", and don't do again soon. */
|
|
|
838
|
|
|
839 void
|
|
|
840 record_auto_save (void)
|
|
|
841 {
|
|
|
842 keystrokes_since_auto_save = 0;
|
|
|
843 }
|
|
173
|
844
|
|
0
|
845 /* Make an auto save happen as soon as possible at command level. */
|
|
|
846
|
|
|
847 void
|
|
|
848 force_auto_save_soon (void)
|
|
|
849 {
|
|
|
850 keystrokes_since_auto_save = 1 + max (auto_save_interval, 20);
|
|
|
851
|
|
|
852 #if 0 /* FSFmacs */
|
|
|
853 record_asynch_buffer_change ();
|
|
|
854 #endif
|
|
|
855 }
|
|
|
856
|
|
|
857 static void
|
|
|
858 maybe_do_auto_save (void)
|
|
|
859 {
|
|
116
|
860 /* This function can call lisp */
|
|
0
|
861 keystrokes_since_auto_save++;
|
|
|
862 if (auto_save_interval > 0 &&
|
|
|
863 keystrokes_since_auto_save > max (auto_save_interval, 20) &&
|
|
|
864 !detect_input_pending ())
|
|
|
865 {
|
|
|
866 Fdo_auto_save (Qnil, Qnil);
|
|
|
867 record_auto_save ();
|
|
|
868 }
|
|
|
869 }
|
|
|
870
|
|
|
871 static Lisp_Object
|
|
|
872 print_help (Lisp_Object object)
|
|
|
873 {
|
|
|
874 Fprinc (object, Qnil);
|
|
|
875 return Qnil;
|
|
|
876 }
|
|
|
877
|
|
|
878 static void
|
|
|
879 execute_help_form (struct command_builder *command_builder,
|
|
|
880 Lisp_Object event)
|
|
|
881 {
|
|
|
882 /* This function can GC */
|
|
|
883 Lisp_Object help = Qnil;
|
|
|
884 int speccount = specpdl_depth ();
|
|
|
885 Bytecount buf_index = command_builder->echo_buf_index;
|
|
|
886 Lisp_Object echo = ((buf_index <= 0)
|
|
|
887 ? Qnil
|
|
|
888 : make_string (command_builder->echo_buf,
|
|
|
889 buf_index));
|
|
|
890 struct gcpro gcpro1, gcpro2;
|
|
|
891 GCPRO2 (echo, help);
|
|
|
892
|
|
|
893 record_unwind_protect (save_window_excursion_unwind,
|
|
|
894 Fcurrent_window_configuration (Qnil));
|
|
|
895 reset_key_echo (command_builder, 1);
|
|
|
896
|
|
|
897 help = Feval (Vhelp_form);
|
|
|
898 if (STRINGP (help))
|
|
380
|
899 internal_with_output_to_temp_buffer (build_string ("*Help*"),
|
|
0
|
900 print_help, help, Qnil);
|
|
|
901 Fnext_command_event (event, Qnil);
|
|
|
902 /* Remove the help from the frame */
|
|
|
903 unbind_to (speccount, Qnil);
|
|
|
904 /* Hmmmm. Tricky. The unbind restores an old window configuration,
|
|
|
905 apparently bypassing any setting of windows_structure_changed.
|
|
|
906 So we need to set it so that things get redrawn properly. */
|
|
|
907 /* #### This is massive overkill. Look at doing it better once the
|
|
|
908 new redisplay is fully in place. */
|
|
|
909 {
|
|
|
910 Lisp_Object frmcons, devcons, concons;
|
|
|
911 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
912 {
|
|
272
|
913 struct frame *f = XFRAME (XCAR (frmcons));
|
|
|
914 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
|
|
0
|
915 }
|
|
|
916 }
|
|
|
917
|
|
|
918 redisplay ();
|
|
|
919 if (event_matches_key_specifier_p (XEVENT (event), make_char (' ')))
|
|
|
920 {
|
|
2
|
921 /* Discard next key if it is a space */
|
|
0
|
922 reset_key_echo (command_builder, 1);
|
|
|
923 Fnext_command_event (event, Qnil);
|
|
|
924 }
|
|
|
925
|
|
|
926 command_builder->echo_buf_index = buf_index;
|
|
|
927 if (buf_index > 0)
|
|
|
928 memcpy (command_builder->echo_buf,
|
|
14
|
929 XSTRING_DATA (echo), buf_index + 1); /* terminating 0 */
|
|
0
|
930 UNGCPRO;
|
|
|
931 }
|
|
|
932
|
|
|
933
|
|
|
934 /**********************************************************************/
|
|
|
935 /* input pending */
|
|
|
936 /**********************************************************************/
|
|
|
937
|
|
|
938 int
|
|
|
939 detect_input_pending (void)
|
|
|
940 {
|
|
|
941 /* Always call the event_pending_p hook even if there's an unread
|
|
|
942 character, because that might do some needed ^G detection (on
|
|
|
943 systems without SIGIO, for example).
|
|
|
944 */
|
|
|
945 if (event_stream_event_pending_p (1))
|
|
|
946 return 1;
|
|
|
947 if (!NILP (Vunread_command_events) || !NILP (Vunread_command_event))
|
|
|
948 return 1;
|
|
|
949 if (!NILP (command_event_queue))
|
|
|
950 {
|
|
|
951 Lisp_Object event;
|
|
|
952
|
|
|
953 EVENT_CHAIN_LOOP (event, command_event_queue)
|
|
|
954 {
|
|
|
955 if (XEVENT_TYPE (event) != eval_event
|
|
|
956 && XEVENT_TYPE (event) != magic_eval_event)
|
|
173
|
957 return 1;
|
|
0
|
958 }
|
|
|
959 }
|
|
|
960 return 0;
|
|
|
961 }
|
|
|
962
|
|
20
|
963 DEFUN ("input-pending-p", Finput_pending_p, 0, 0, 0, /*
|
|
272
|
964 Return t if command input is currently available with no waiting.
|
|
0
|
965 Actually, the value is nil only if we can be sure that no input is available.
|
|
20
|
966 */
|
|
70
|
967 ())
|
|
0
|
968 {
|
|
173
|
969 return detect_input_pending () ? Qt : Qnil;
|
|
0
|
970 }
|
|
|
971
|
|
|
972
|
|
|
973 /**********************************************************************/
|
|
|
974 /* timeouts */
|
|
|
975 /**********************************************************************/
|
|
|
976
|
|
|
977 /**** Low-level timeout functions. ****
|
|
|
978
|
|
|
979 These functions maintain a sorted list of one-shot timeouts (where
|
|
|
980 the timeouts are in absolute time). They are intended for use by
|
|
|
981 functions that need to convert a list of absolute timeouts into a
|
|
|
982 series of intervals to wait for. */
|
|
|
983
|
|
|
984 /* We ensure that 0 is never a valid ID, so that a value of 0 can be
|
|
|
985 used to indicate an absence of a timer. */
|
|
|
986 static int low_level_timeout_id_tick;
|
|
|
987
|
|
412
|
988 struct low_level_timeout_blocktype
|
|
0
|
989 {
|
|
|
990 Blocktype_declare (struct low_level_timeout);
|
|
|
991 } *the_low_level_timeout_blocktype;
|
|
|
992
|
|
|
993 /* Add a one-shot timeout at time TIME to TIMEOUT_LIST. Return
|
|
|
994 a unique ID identifying the timeout. */
|
|
|
995
|
|
|
996 int
|
|
|
997 add_low_level_timeout (struct low_level_timeout **timeout_list,
|
|
|
998 EMACS_TIME thyme)
|
|
|
999 {
|
|
|
1000 struct low_level_timeout *tm;
|
|
|
1001 struct low_level_timeout *t, **tt;
|
|
|
1002
|
|
|
1003 /* Allocate a new time struct. */
|
|
|
1004
|
|
|
1005 tm = Blocktype_alloc (the_low_level_timeout_blocktype);
|
|
|
1006 tm->next = NULL;
|
|
|
1007 if (low_level_timeout_id_tick == 0)
|
|
|
1008 low_level_timeout_id_tick++;
|
|
|
1009 tm->id = low_level_timeout_id_tick++;
|
|
|
1010 tm->time = thyme;
|
|
|
1011
|
|
|
1012 /* Add it to the queue. */
|
|
|
1013
|
|
|
1014 tt = timeout_list;
|
|
|
1015 t = *tt;
|
|
|
1016 while (t && EMACS_TIME_EQUAL_OR_GREATER (tm->time, t->time))
|
|
|
1017 {
|
|
|
1018 tt = &t->next;
|
|
|
1019 t = *tt;
|
|
|
1020 }
|
|
|
1021 tm->next = t;
|
|
|
1022 *tt = tm;
|
|
|
1023
|
|
|
1024 return tm->id;
|
|
|
1025 }
|
|
|
1026
|
|
|
1027 /* Remove the low-level timeout identified by ID from TIMEOUT_LIST.
|
|
|
1028 If the timeout is not there, do nothing. */
|
|
|
1029
|
|
|
1030 void
|
|
|
1031 remove_low_level_timeout (struct low_level_timeout **timeout_list, int id)
|
|
|
1032 {
|
|
|
1033 struct low_level_timeout *t, *prev;
|
|
173
|
1034
|
|
0
|
1035 /* find it */
|
|
173
|
1036
|
|
0
|
1037 for (t = *timeout_list, prev = NULL; t && t->id != id; t = t->next)
|
|
|
1038 prev = t;
|
|
173
|
1039
|
|
0
|
1040 if (!t)
|
|
|
1041 return; /* couldn't find it */
|
|
|
1042
|
|
|
1043 if (!prev)
|
|
|
1044 *timeout_list = t->next;
|
|
|
1045 else prev->next = t->next;
|
|
|
1046
|
|
|
1047 Blocktype_free (the_low_level_timeout_blocktype, t);
|
|
|
1048 }
|
|
|
1049
|
|
|
1050 /* If there are timeouts on TIMEOUT_LIST, store the relative time
|
|
|
1051 interval to the first timeout on the list into INTERVAL and
|
|
|
1052 return 1. Otherwise, return 0. */
|
|
|
1053
|
|
|
1054 int
|
|
|
1055 get_low_level_timeout_interval (struct low_level_timeout *timeout_list,
|
|
|
1056 EMACS_TIME *interval)
|
|
|
1057 {
|
|
|
1058 if (!timeout_list) /* no timer events; block indefinitely */
|
|
|
1059 return 0;
|
|
|
1060 else
|
|
|
1061 {
|
|
|
1062 EMACS_TIME current_time;
|
|
173
|
1063
|
|
0
|
1064 /* The time to block is the difference between the first
|
|
|
1065 (earliest) timer on the queue and the current time.
|
|
|
1066 If that is negative, then the timer will fire immediately
|
|
|
1067 but we still have to call select(), with a zero-valued
|
|
|
1068 timeout: user events must have precedence over timer events. */
|
|
|
1069 EMACS_GET_TIME (current_time);
|
|
|
1070 if (EMACS_TIME_GREATER (timeout_list->time, current_time))
|
|
|
1071 EMACS_SUB_TIME (*interval, timeout_list->time,
|
|
|
1072 current_time);
|
|
|
1073 else
|
|
|
1074 EMACS_SET_SECS_USECS (*interval, 0, 0);
|
|
|
1075 return 1;
|
|
|
1076 }
|
|
|
1077 }
|
|
|
1078
|
|
|
1079 /* Pop the first (i.e. soonest) timeout off of TIMEOUT_LIST and return
|
|
|
1080 its ID. Also, if TIME_OUT is not 0, store the absolute time of the
|
|
|
1081 timeout into TIME_OUT. */
|
|
|
1082
|
|
|
1083 int
|
|
|
1084 pop_low_level_timeout (struct low_level_timeout **timeout_list,
|
|
|
1085 EMACS_TIME *time_out)
|
|
|
1086 {
|
|
|
1087 struct low_level_timeout *tm = *timeout_list;
|
|
|
1088 int id;
|
|
|
1089
|
|
|
1090 assert (tm);
|
|
|
1091 id = tm->id;
|
|
|
1092 if (time_out)
|
|
|
1093 *time_out = tm->time;
|
|
|
1094 *timeout_list = tm->next;
|
|
|
1095 Blocktype_free (the_low_level_timeout_blocktype, tm);
|
|
|
1096 return id;
|
|
|
1097 }
|
|
|
1098
|
|
|
1099
|
|
|
1100 /**** High-level timeout functions. ****/
|
|
|
1101
|
|
|
1102 static int timeout_id_tick;
|
|
|
1103
|
|
412
|
1104 /* Since timeout structures contain Lisp_Objects, they need to be GC'd
|
|
|
1105 properly. The opaque data type provides a convenient way of doing
|
|
|
1106 this without having to create a new Lisp object, since we can
|
|
|
1107 provide our own mark function. */
|
|
|
1108
|
|
|
1109 struct timeout
|
|
|
1110 {
|
|
|
1111 int id; /* Id we use to identify the timeout over its lifetime */
|
|
|
1112 int interval_id; /* Id for this particular interval; this may
|
|
|
1113 be different each time the timeout is
|
|
|
1114 signalled.*/
|
|
|
1115 Lisp_Object function, object; /* Function and object associated
|
|
|
1116 with timeout. */
|
|
|
1117 EMACS_TIME next_signal_time; /* Absolute time when the timeout
|
|
|
1118 is next going to be signalled. */
|
|
|
1119 unsigned int resignal_msecs; /* How far after the next timeout
|
|
|
1120 should the one after that
|
|
|
1121 occur? */
|
|
|
1122 };
|
|
|
1123
|
|
0
|
1124 static Lisp_Object pending_timeout_list, pending_async_timeout_list;
|
|
|
1125
|
|
|
1126 static Lisp_Object Vtimeout_free_list;
|
|
|
1127
|
|
|
1128 static Lisp_Object
|
|
412
|
1129 mark_timeout (Lisp_Object obj, void (*markobj) (Lisp_Object))
|
|
0
|
1130 {
|
|
412
|
1131 struct timeout *tm = (struct timeout *) XOPAQUE_DATA (obj);
|
|
|
1132 markobj (tm->function);
|
|
0
|
1133 return tm->object;
|
|
|
1134 }
|
|
|
1135
|
|
|
1136 /* Generate a timeout and return its ID. */
|
|
|
1137
|
|
|
1138 int
|
|
|
1139 event_stream_generate_wakeup (unsigned int milliseconds,
|
|
|
1140 unsigned int vanilliseconds,
|
|
|
1141 Lisp_Object function, Lisp_Object object,
|
|
|
1142 int async_p)
|
|
|
1143 {
|
|
412
|
1144 Lisp_Object op = allocate_managed_opaque (Vtimeout_free_list, 0);
|
|
|
1145 struct timeout *timeout = (struct timeout *) XOPAQUE_DATA (op);
|
|
0
|
1146 EMACS_TIME current_time;
|
|
|
1147 EMACS_TIME interval;
|
|
|
1148
|
|
|
1149 timeout->id = timeout_id_tick++;
|
|
|
1150 timeout->resignal_msecs = vanilliseconds;
|
|
|
1151 timeout->function = function;
|
|
|
1152 timeout->object = object;
|
|
|
1153
|
|
|
1154 EMACS_GET_TIME (current_time);
|
|
|
1155 EMACS_SET_SECS_USECS (interval, milliseconds / 1000,
|
|
|
1156 1000 * (milliseconds % 1000));
|
|
|
1157 EMACS_ADD_TIME (timeout->next_signal_time, current_time, interval);
|
|
|
1158
|
|
|
1159 if (async_p)
|
|
|
1160 {
|
|
|
1161 timeout->interval_id =
|
|
|
1162 event_stream_add_async_timeout (timeout->next_signal_time);
|
|
|
1163 pending_async_timeout_list = noseeum_cons (op,
|
|
|
1164 pending_async_timeout_list);
|
|
|
1165 }
|
|
|
1166 else
|
|
|
1167 {
|
|
|
1168 timeout->interval_id =
|
|
|
1169 event_stream_add_timeout (timeout->next_signal_time);
|
|
|
1170 pending_timeout_list = noseeum_cons (op, pending_timeout_list);
|
|
|
1171 }
|
|
|
1172 return timeout->id;
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 /* Given the INTERVAL-ID of a timeout just signalled, resignal the timeout
|
|
|
1176 as necessary and return the timeout's ID and function and object slots.
|
|
|
1177
|
|
|
1178 This should be called as a result of receiving notice that a timeout
|
|
|
1179 has fired. INTERVAL-ID is *not* the timeout's ID, but is the ID that
|
|
|
1180 identifies this particular firing of the timeout. INTERVAL-ID's and
|
|
|
1181 timeout ID's are in separate number spaces and bear no relation to
|
|
|
1182 each other. The INTERVAL-ID is all that the event callback routines
|
|
|
1183 work with: they work only with one-shot intervals, not with timeouts
|
|
|
1184 that may fire repeatedly.
|
|
|
1185
|
|
|
1186 NOTE: The returned FUNCTION and OBJECT are *not* GC-protected at all.
|
|
|
1187 */
|
|
|
1188
|
|
|
1189 static int
|
|
|
1190 event_stream_resignal_wakeup (int interval_id, int async_p,
|
|
|
1191 Lisp_Object *function, Lisp_Object *object)
|
|
|
1192 {
|
|
|
1193 Lisp_Object op = Qnil, rest;
|
|
412
|
1194 struct timeout *timeout;
|
|
0
|
1195 Lisp_Object *timeout_list;
|
|
|
1196 struct gcpro gcpro1;
|
|
|
1197 int id;
|
|
|
1198
|
|
|
1199 GCPRO1 (op); /* just in case ... because it's removed from the list
|
|
|
1200 for awhile. */
|
|
|
1201
|
|
185
|
1202 timeout_list = async_p ? &pending_async_timeout_list : &pending_timeout_list;
|
|
0
|
1203
|
|
|
1204 /* Find the timeout on the list of pending ones. */
|
|
|
1205 LIST_LOOP (rest, *timeout_list)
|
|
|
1206 {
|
|
412
|
1207 timeout = (struct timeout *) XOPAQUE_DATA (XCAR (rest));
|
|
0
|
1208 if (timeout->interval_id == interval_id)
|
|
|
1209 break;
|
|
|
1210 }
|
|
|
1211
|
|
|
1212 assert (!NILP (rest));
|
|
|
1213 op = XCAR (rest);
|
|
412
|
1214 timeout = (struct timeout *) XOPAQUE_DATA (op);
|
|
0
|
1215 /* We make sure to snarf the data out of the timeout object before
|
|
412
|
1216 we free it with free_managed_opaque(). */
|
|
0
|
1217 id = timeout->id;
|
|
|
1218 *function = timeout->function;
|
|
|
1219 *object = timeout->object;
|
|
173
|
1220
|
|
0
|
1221 /* Remove this one from the list of pending timeouts */
|
|
|
1222 *timeout_list = delq_no_quit_and_free_cons (op, *timeout_list);
|
|
|
1223
|
|
|
1224 /* If this timeout wants to be resignalled, do it now. */
|
|
|
1225 if (timeout->resignal_msecs)
|
|
|
1226 {
|
|
|
1227 EMACS_TIME current_time;
|
|
|
1228 EMACS_TIME interval;
|
|
|
1229
|
|
|
1230 /* Determine the time that the next resignalling should occur.
|
|
|
1231 We do that by adding the interval time to the last signalled
|
|
|
1232 time until we get a time that's current.
|
|
|
1233
|
|
|
1234 (This way, it doesn't matter if the timeout was signalled
|
|
|
1235 exactly when we asked for it, or at some time later.)
|
|
|
1236 */
|
|
|
1237 EMACS_GET_TIME (current_time);
|
|
|
1238 EMACS_SET_SECS_USECS (interval, timeout->resignal_msecs / 1000,
|
|
|
1239 1000 * (timeout->resignal_msecs % 1000));
|
|
|
1240 do
|
|
|
1241 {
|
|
|
1242 EMACS_ADD_TIME (timeout->next_signal_time, timeout->next_signal_time,
|
|
|
1243 interval);
|
|
|
1244 } while (EMACS_TIME_GREATER (current_time, timeout->next_signal_time));
|
|
|
1245
|
|
|
1246 if (async_p)
|
|
|
1247 timeout->interval_id =
|
|
|
1248 event_stream_add_async_timeout (timeout->next_signal_time);
|
|
|
1249 else
|
|
|
1250 timeout->interval_id =
|
|
|
1251 event_stream_add_timeout (timeout->next_signal_time);
|
|
|
1252 /* Add back onto the list. Note that the effect of this
|
|
|
1253 is to move frequently-hit timeouts to the front of the
|
|
|
1254 list, which is a good thing. */
|
|
|
1255 *timeout_list = noseeum_cons (op, *timeout_list);
|
|
|
1256 }
|
|
|
1257 else
|
|
412
|
1258 free_managed_opaque (Vtimeout_free_list, op);
|
|
173
|
1259
|
|
0
|
1260 UNGCPRO;
|
|
|
1261 return id;
|
|
|
1262 }
|
|
|
1263
|
|
|
1264 void
|
|
|
1265 event_stream_disable_wakeup (int id, int async_p)
|
|
|
1266 {
|
|
412
|
1267 struct timeout *timeout = 0;
|
|
272
|
1268 Lisp_Object rest;
|
|
0
|
1269 Lisp_Object *timeout_list;
|
|
|
1270
|
|
|
1271 if (async_p)
|
|
|
1272 timeout_list = &pending_async_timeout_list;
|
|
|
1273 else
|
|
|
1274 timeout_list = &pending_timeout_list;
|
|
|
1275
|
|
|
1276 /* Find the timeout on the list of pending ones, if it's still there. */
|
|
|
1277 LIST_LOOP (rest, *timeout_list)
|
|
|
1278 {
|
|
412
|
1279 timeout = (struct timeout *) XOPAQUE_DATA (XCAR (rest));
|
|
0
|
1280 if (timeout->id == id)
|
|
|
1281 break;
|
|
|
1282 }
|
|
|
1283
|
|
|
1284 /* If we found it, remove it from the list and disable the pending
|
|
|
1285 one-shot. */
|
|
|
1286 if (!NILP (rest))
|
|
|
1287 {
|
|
|
1288 Lisp_Object op = XCAR (rest);
|
|
|
1289 *timeout_list =
|
|
|
1290 delq_no_quit_and_free_cons (op, *timeout_list);
|
|
|
1291 if (async_p)
|
|
|
1292 event_stream_remove_async_timeout (timeout->interval_id);
|
|
|
1293 else
|
|
|
1294 event_stream_remove_timeout (timeout->interval_id);
|
|
412
|
1295 free_managed_opaque (Vtimeout_free_list, op);
|
|
0
|
1296 }
|
|
|
1297 }
|
|
|
1298
|
|
169
|
1299 static int
|
|
74
|
1300 event_stream_wakeup_pending_p (int id, int async_p)
|
|
|
1301 {
|
|
412
|
1302 struct timeout *timeout;
|
|
272
|
1303 Lisp_Object rest;
|
|
74
|
1304 Lisp_Object timeout_list;
|
|
|
1305 int found = 0;
|
|
|
1306
|
|
|
1307
|
|
|
1308 if (async_p)
|
|
|
1309 timeout_list = pending_async_timeout_list;
|
|
|
1310 else
|
|
|
1311 timeout_list = pending_timeout_list;
|
|
|
1312
|
|
|
1313 /* Find the element on the list of pending ones, if it's still there. */
|
|
|
1314 LIST_LOOP (rest, timeout_list)
|
|
|
1315 {
|
|
412
|
1316 timeout = (struct timeout *) XOPAQUE_DATA (XCAR (rest));
|
|
74
|
1317 if (timeout->id == id)
|
|
|
1318 {
|
|
|
1319 found = 1;
|
|
|
1320 break;
|
|
|
1321 }
|
|
|
1322 }
|
|
|
1323
|
|
|
1324 return found;
|
|
|
1325 }
|
|
|
1326
|
|
0
|
1327
|
|
|
1328 /**** Asynch. timeout functions (see also signal.c) ****/
|
|
|
1329
|
|
|
1330 #if !defined (SIGIO) && !defined (DONT_POLL_FOR_QUIT)
|
|
|
1331 extern int poll_for_quit_id;
|
|
|
1332 #endif
|
|
|
1333
|
|
276
|
1334 #if defined(HAVE_UNIX_PROCESSES) && !defined(SIGCHLD)
|
|
0
|
1335 extern int poll_for_sigchld_id;
|
|
|
1336 #endif
|
|
|
1337
|
|
|
1338 void
|
|
|
1339 event_stream_deal_with_async_timeout (int interval_id)
|
|
|
1340 {
|
|
|
1341 /* This function can GC */
|
|
|
1342 Lisp_Object humpty, dumpty;
|
|
276
|
1343 #if ((!defined (SIGIO) && !defined (DONT_POLL_FOR_QUIT)) \
|
|
|
1344 || defined(HAVE_UNIX_PROCESSES) && !defined(SIGCHLD))
|
|
0
|
1345 int id =
|
|
|
1346 #endif
|
|
|
1347 event_stream_resignal_wakeup (interval_id, 1, &humpty, &dumpty);
|
|
|
1348
|
|
|
1349 #if !defined (SIGIO) && !defined (DONT_POLL_FOR_QUIT)
|
|
|
1350 if (id == poll_for_quit_id)
|
|
|
1351 {
|
|
|
1352 quit_check_signal_happened = 1;
|
|
|
1353 quit_check_signal_tick_count++;
|
|
|
1354 return;
|
|
|
1355 }
|
|
|
1356 #endif
|
|
|
1357
|
|
276
|
1358 #if defined(HAVE_UNIX_PROCESSES) && !defined(SIGCHLD)
|
|
0
|
1359 if (id == poll_for_sigchld_id)
|
|
|
1360 {
|
|
|
1361 kick_status_notify ();
|
|
|
1362 return;
|
|
|
1363 }
|
|
|
1364 #endif
|
|
|
1365
|
|
|
1366 /* call1 GC-protects its arguments */
|
|
|
1367 call1_trapping_errors ("Error in asynchronous timeout callback",
|
|
|
1368 humpty, dumpty);
|
|
|
1369 }
|
|
|
1370
|
|
|
1371
|
|
|
1372 /**** Lisp-level timeout functions. ****/
|
|
|
1373
|
|
|
1374 static unsigned long
|
|
|
1375 lisp_number_to_milliseconds (Lisp_Object secs, int allow_0)
|
|
|
1376 {
|
|
|
1377 #ifdef LISP_FLOAT_TYPE
|
|
|
1378 double fsecs;
|
|
|
1379 CHECK_INT_OR_FLOAT (secs);
|
|
|
1380 fsecs = XFLOATINT (secs);
|
|
|
1381 #else
|
|
|
1382 long fsecs;
|
|
272
|
1383 CHECK_INT (secs);
|
|
0
|
1384 fsecs = XINT (secs);
|
|
|
1385 #endif
|
|
|
1386 if (fsecs < 0)
|
|
|
1387 signal_simple_error ("timeout is negative", secs);
|
|
|
1388 if (!allow_0 && fsecs == 0)
|
|
|
1389 signal_simple_error ("timeout is non-positive", secs);
|
|
|
1390 if (fsecs >= (((unsigned int) 0xFFFFFFFF) / 1000))
|
|
|
1391 signal_simple_error
|
|
|
1392 ("timeout would exceed 32 bits when represented in milliseconds", secs);
|
|
272
|
1393
|
|
|
1394 return (unsigned long) (1000 * fsecs);
|
|
0
|
1395 }
|
|
|
1396
|
|
20
|
1397 DEFUN ("add-timeout", Fadd_timeout, 3, 4, 0, /*
|
|
0
|
1398 Add a timeout, to be signaled after the timeout period has elapsed.
|
|
|
1399 SECS is a number of seconds, expressed as an integer or a float.
|
|
|
1400 FUNCTION will be called after that many seconds have elapsed, with one
|
|
|
1401 argument, the given OBJECT. If the optional RESIGNAL argument is provided,
|
|
|
1402 then after this timeout expires, `add-timeout' will automatically be called
|
|
|
1403 again with RESIGNAL as the first argument.
|
|
|
1404
|
|
|
1405 This function returns an object which is the id number of this particular
|
|
|
1406 timeout. You can pass that object to `disable-timeout' to turn off the
|
|
|
1407 timeout before it has been signalled.
|
|
|
1408
|
|
|
1409 NOTE: Id numbers as returned by this function are in a distinct namespace
|
|
|
1410 from those returned by `add-async-timeout'. This means that the same id
|
|
|
1411 number could refer to a pending synchronous timeout and a different pending
|
|
|
1412 asynchronous timeout, and that you cannot pass an id from `add-timeout'
|
|
|
1413 to `disable-async-timeout', or vice-versa.
|
|
|
1414
|
|
|
1415 The number of seconds may be expressed as a floating-point number, in which
|
|
|
1416 case some fractional part of a second will be used. Caveat: the usable
|
|
|
1417 timeout granularity will vary from system to system.
|
|
|
1418
|
|
|
1419 Adding a timeout causes a timeout event to be returned by `next-event', and
|
|
|
1420 the function will be invoked by `dispatch-event,' so if emacs is in a tight
|
|
|
1421 loop, the function will not be invoked until the next call to sit-for or
|
|
|
1422 until the return to top-level (the same is true of process filters).
|
|
|
1423
|
|
|
1424 If you need to have a timeout executed even when XEmacs is in the midst of
|
|
|
1425 running Lisp code, use `add-async-timeout'.
|
|
|
1426
|
|
|
1427 WARNING: if you are thinking of calling add-timeout from inside of a
|
|
|
1428 callback function as a way of resignalling a timeout, think again. There
|
|
|
1429 is a race condition. That's why the RESIGNAL argument exists.
|
|
20
|
1430 */
|
|
|
1431 (secs, function, object, resignal))
|
|
0
|
1432 {
|
|
|
1433 unsigned long msecs = lisp_number_to_milliseconds (secs, 0);
|
|
|
1434 unsigned long msecs2 = (NILP (resignal) ? 0 :
|
|
|
1435 lisp_number_to_milliseconds (resignal, 0));
|
|
|
1436 int id;
|
|
|
1437 Lisp_Object lid;
|
|
|
1438 id = event_stream_generate_wakeup (msecs, msecs2, function, object, 0);
|
|
|
1439 lid = make_int (id);
|
|
|
1440 if (id != XINT (lid)) abort ();
|
|
|
1441 return lid;
|
|
|
1442 }
|
|
|
1443
|
|
20
|
1444 DEFUN ("disable-timeout", Fdisable_timeout, 1, 1, 0, /*
|
|
0
|
1445 Disable a timeout from signalling any more.
|
|
|
1446 ID should be a timeout id number as returned by `add-timeout'. If ID
|
|
|
1447 corresponds to a one-shot timeout that has already signalled, nothing
|
|
|
1448 will happen.
|
|
|
1449
|
|
|
1450 It will not work to call this function on an id number returned by
|
|
|
1451 `add-async-timeout'. Use `disable-async-timeout' for that.
|
|
20
|
1452 */
|
|
|
1453 (id))
|
|
0
|
1454 {
|
|
|
1455 CHECK_INT (id);
|
|
|
1456 event_stream_disable_wakeup (XINT (id), 0);
|
|
|
1457 return Qnil;
|
|
|
1458 }
|
|
|
1459
|
|
20
|
1460 DEFUN ("add-async-timeout", Fadd_async_timeout, 3, 4, 0, /*
|
|
0
|
1461 Add an asynchronous timeout, to be signaled after an interval has elapsed.
|
|
|
1462 SECS is a number of seconds, expressed as an integer or a float.
|
|
|
1463 FUNCTION will be called after that many seconds have elapsed, with one
|
|
|
1464 argument, the given OBJECT. If the optional RESIGNAL argument is provided,
|
|
|
1465 then after this timeout expires, `add-async-timeout' will automatically be
|
|
|
1466 called again with RESIGNAL as the first argument.
|
|
|
1467
|
|
|
1468 This function returns an object which is the id number of this particular
|
|
|
1469 timeout. You can pass that object to `disable-async-timeout' to turn off
|
|
|
1470 the timeout before it has been signalled.
|
|
|
1471
|
|
|
1472 NOTE: Id numbers as returned by this function are in a distinct namespace
|
|
|
1473 from those returned by `add-timeout'. This means that the same id number
|
|
|
1474 could refer to a pending synchronous timeout and a different pending
|
|
|
1475 asynchronous timeout, and that you cannot pass an id from
|
|
|
1476 `add-async-timeout' to `disable-timeout', or vice-versa.
|
|
|
1477
|
|
|
1478 The number of seconds may be expressed as a floating-point number, in which
|
|
|
1479 case some fractional part of a second will be used. Caveat: the usable
|
|
|
1480 timeout granularity will vary from system to system.
|
|
|
1481
|
|
|
1482 Adding an asynchronous timeout causes the function to be invoked as soon
|
|
|
1483 as the timeout occurs, even if XEmacs is in the midst of executing some
|
|
|
1484 other code. (This is unlike the synchronous timeouts added with
|
|
|
1485 `add-timeout', where the timeout will only be signalled when XEmacs is
|
|
|
1486 waiting for events, i.e. the next return to top-level or invocation of
|
|
|
1487 `sit-for' or related functions.) This means that the function that is
|
|
|
1488 called *must* not signal an error or change any global state (e.g. switch
|
|
|
1489 buffers or windows) except when locking code is in place to make sure
|
|
|
1490 that race conditions don't occur in the interaction between the
|
|
|
1491 asynchronous timeout function and other code.
|
|
|
1492
|
|
|
1493 Under most circumstances, you should use `add-timeout' instead, as it is
|
|
|
1494 much safer. Asynchronous timeouts should only be used when such behavior
|
|
|
1495 is really necessary.
|
|
|
1496
|
|
|
1497 Asynchronous timeouts are blocked and will not occur when `inhibit-quit'
|
|
|
1498 is non-nil. As soon as `inhibit-quit' becomes nil again, any pending
|
|
|
1499 asynchronous timeouts will get called immediately. (Multiple occurrences
|
|
|
1500 of the same asynchronous timeout are not queued, however.) While the
|
|
|
1501 callback function of an asynchronous timeout is invoked, `inhibit-quit'
|
|
|
1502 is automatically bound to non-nil, and thus other asynchronous timeouts
|
|
|
1503 will be blocked unless the callback function explicitly sets `inhibit-quit'
|
|
|
1504 to nil.
|
|
|
1505
|
|
|
1506 WARNING: if you are thinking of calling `add-async-timeout' from inside of a
|
|
|
1507 callback function as a way of resignalling a timeout, think again. There
|
|
|
1508 is a race condition. That's why the RESIGNAL argument exists.
|
|
20
|
1509 */
|
|
70
|
1510 (secs, function, object, resignal))
|
|
0
|
1511 {
|
|
|
1512 unsigned long msecs = lisp_number_to_milliseconds (secs, 0);
|
|
|
1513 unsigned long msecs2 = (NILP (resignal) ? 0 :
|
|
|
1514 lisp_number_to_milliseconds (resignal, 0));
|
|
|
1515 int id;
|
|
|
1516 Lisp_Object lid;
|
|
|
1517 id = event_stream_generate_wakeup (msecs, msecs2, function, object, 1);
|
|
|
1518 lid = make_int (id);
|
|
|
1519 if (id != XINT (lid)) abort ();
|
|
|
1520 return lid;
|
|
|
1521 }
|
|
|
1522
|
|
20
|
1523 DEFUN ("disable-async-timeout", Fdisable_async_timeout, 1, 1, 0, /*
|
|
0
|
1524 Disable an asynchronous timeout from signalling any more.
|
|
|
1525 ID should be a timeout id number as returned by `add-async-timeout'. If ID
|
|
|
1526 corresponds to a one-shot timeout that has already signalled, nothing
|
|
|
1527 will happen.
|
|
|
1528
|
|
|
1529 It will not work to call this function on an id number returned by
|
|
|
1530 `add-timeout'. Use `disable-timeout' for that.
|
|
20
|
1531 */
|
|
|
1532 (id))
|
|
0
|
1533 {
|
|
|
1534 CHECK_INT (id);
|
|
|
1535 event_stream_disable_wakeup (XINT (id), 1);
|
|
|
1536 return Qnil;
|
|
|
1537 }
|
|
|
1538
|
|
|
1539
|
|
|
1540 /**********************************************************************/
|
|
|
1541 /* enqueuing and dequeuing events */
|
|
|
1542 /**********************************************************************/
|
|
|
1543
|
|
|
1544 /* Add an event to the back of the command-event queue: it will be the next
|
|
|
1545 event read after all pending events. This only works on keyboard,
|
|
|
1546 mouse-click, misc-user, and eval events.
|
|
|
1547 */
|
|
272
|
1548 static void
|
|
0
|
1549 enqueue_command_event (Lisp_Object event)
|
|
|
1550 {
|
|
|
1551 enqueue_event (event, &command_event_queue, &command_event_queue_tail);
|
|
|
1552 }
|
|
|
1553
|
|
272
|
1554 static Lisp_Object
|
|
0
|
1555 dequeue_command_event (void)
|
|
|
1556 {
|
|
|
1557 return dequeue_event (&command_event_queue, &command_event_queue_tail);
|
|
|
1558 }
|
|
|
1559
|
|
|
1560 /* put the event on the typeahead queue, unless
|
|
|
1561 the event is the quit char, in which case the `QUIT'
|
|
|
1562 which will occur on the next trip through this loop is
|
|
|
1563 all the processing we should do - leaving it on the queue
|
|
|
1564 would cause the quit to be processed twice.
|
|
|
1565 */
|
|
|
1566 static void
|
|
|
1567 enqueue_command_event_1 (Lisp_Object event_to_copy)
|
|
|
1568 {
|
|
|
1569 /* do not call check_quit() here. Vquit_flag was set in
|
|
|
1570 next_event_internal. */
|
|
|
1571 if (NILP (Vquit_flag))
|
|
|
1572 enqueue_command_event (Fcopy_event (event_to_copy, Qnil));
|
|
|
1573 }
|
|
|
1574
|
|
|
1575 void
|
|
|
1576 enqueue_magic_eval_event (void (*fun) (Lisp_Object), Lisp_Object object)
|
|
|
1577 {
|
|
189
|
1578 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
0
|
1579
|
|
|
1580 XEVENT (event)->event_type = magic_eval_event;
|
|
|
1581 /* channel for magic_eval events is nil */
|
|
|
1582 XEVENT (event)->event.magic_eval.internal_function = fun;
|
|
|
1583 XEVENT (event)->event.magic_eval.object = object;
|
|
|
1584 enqueue_command_event (event);
|
|
|
1585 }
|
|
|
1586
|
|
20
|
1587 DEFUN ("enqueue-eval-event", Fenqueue_eval_event, 2, 2, 0, /*
|
|
0
|
1588 Add an eval event to the back of the eval event queue.
|
|
|
1589 When this event is dispatched, FUNCTION (which should be a function
|
|
|
1590 of one argument) will be called with OBJECT as its argument.
|
|
|
1591 See `next-event' for a description of event types and how events
|
|
|
1592 are received.
|
|
20
|
1593 */
|
|
|
1594 (function, object))
|
|
0
|
1595 {
|
|
189
|
1596 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
0
|
1597
|
|
|
1598 XEVENT (event)->event_type = eval_event;
|
|
|
1599 /* channel for eval events is nil */
|
|
|
1600 XEVENT (event)->event.eval.function = function;
|
|
|
1601 XEVENT (event)->event.eval.object = object;
|
|
|
1602 enqueue_command_event (event);
|
|
|
1603
|
|
|
1604 return event;
|
|
|
1605 }
|
|
|
1606
|
|
|
1607 Lisp_Object
|
|
|
1608 enqueue_misc_user_event (Lisp_Object channel, Lisp_Object function,
|
|
|
1609 Lisp_Object object)
|
|
|
1610 {
|
|
189
|
1611 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
0
|
1612
|
|
|
1613 XEVENT (event)->event_type = misc_user_event;
|
|
|
1614 XEVENT (event)->channel = channel;
|
|
282
|
1615 XEVENT (event)->event.misc.function = function;
|
|
|
1616 XEVENT (event)->event.misc.object = object;
|
|
|
1617 XEVENT (event)->event.misc.button = 0;
|
|
|
1618 XEVENT (event)->event.misc.modifiers = 0;
|
|
|
1619 XEVENT (event)->event.misc.x = -1;
|
|
|
1620 XEVENT (event)->event.misc.y = -1;
|
|
0
|
1621 enqueue_command_event (event);
|
|
|
1622
|
|
|
1623 return event;
|
|
|
1624 }
|
|
|
1625
|
|
284
|
1626 Lisp_Object
|
|
|
1627 enqueue_misc_user_event_pos (Lisp_Object channel, Lisp_Object function,
|
|
|
1628 Lisp_Object object,
|
|
|
1629 int button, int modifiers, int x, int y)
|
|
|
1630 {
|
|
|
1631 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
|
1632
|
|
|
1633 XEVENT (event)->event_type = misc_user_event;
|
|
|
1634 XEVENT (event)->channel = channel;
|
|
|
1635 XEVENT (event)->event.misc.function = function;
|
|
|
1636 XEVENT (event)->event.misc.object = object;
|
|
|
1637 XEVENT (event)->event.misc.button = button;
|
|
|
1638 XEVENT (event)->event.misc.modifiers = modifiers;
|
|
|
1639 XEVENT (event)->event.misc.x = x;
|
|
|
1640 XEVENT (event)->event.misc.y = y;
|
|
|
1641 enqueue_command_event (event);
|
|
|
1642
|
|
|
1643 return event;
|
|
|
1644 }
|
|
|
1645
|
|
0
|
1646
|
|
|
1647 /**********************************************************************/
|
|
|
1648 /* focus-event handling */
|
|
|
1649 /**********************************************************************/
|
|
|
1650
|
|
|
1651 /*
|
|
|
1652
|
|
|
1653 Ben's capsule lecture on focus:
|
|
|
1654
|
|
|
1655 In FSFmacs `select-frame' never changes the window-manager frame
|
|
|
1656 focus. All it does is change the "selected frame". This is similar
|
|
|
1657 to what happens when we call `select-device' or `select-console'.
|
|
|
1658 Whenever an event comes in (including a keyboard event), its frame is
|
|
|
1659 selected; therefore, evaluating `select-frame' in *scratch* won't
|
|
|
1660 cause any effects because the next received event (in the same frame)
|
|
|
1661 will cause a switch back to the frame displaying *scratch*.
|
|
|
1662
|
|
|
1663 Whenever a focus-change event is received from the window manager, it
|
|
|
1664 generates a `switch-frame' event, which causes the Lisp function
|
|
|
1665 `handle-switch-frame' to get run. This basically just runs
|
|
|
1666 `select-frame' (see below, however).
|
|
|
1667
|
|
|
1668 In FSFmacs, if you want to have an operation run when a frame is
|
|
|
1669 selected, you supply an event binding for `switch-frame' (and then
|
|
|
1670 maybe call `handle-switch-frame', or something ...).
|
|
|
1671
|
|
|
1672 In XEmacs, we *do* change the window-manager frame focus as a result
|
|
|
1673 of `select-frame', but not until the next time an event is received,
|
|
|
1674 so that a function that momentarily changes the selected frame won't
|
|
|
1675 cause WM focus flashing. (#### There's something not quite right here;
|
|
|
1676 this is causing the wrong-cursor-focus problems that you occasionally
|
|
|
1677 see. But the general idea is correct.) This approach is winning for
|
|
|
1678 people who use the explicit-focus model, but is trickier to implement.
|
|
|
1679
|
|
|
1680 We also don't make the `switch-frame' event visible but instead have
|
|
|
1681 `select-frame-hook', which is a better approach.
|
|
|
1682
|
|
|
1683 There is the problem of surrogate minibuffers, where when we enter the
|
|
|
1684 minibuffer, you essentially want to temporarily switch the WM focus to
|
|
|
1685 the frame with the minibuffer, and switch it back when you exit the
|
|
|
1686 minibuffer.
|
|
|
1687
|
|
|
1688 FSFmacs solves this with the crockish `redirect-frame-focus', which
|
|
|
1689 says "for keyboard events received from FRAME, act like they're
|
|
|
1690 coming from FOCUS-FRAME". I think what this means is that, when
|
|
|
1691 a keyboard event comes in and the event manager is about to select the
|
|
|
1692 event's frame, if that frame has its focus redirected, the redirected-to
|
|
|
1693 frame is selected instead. That way, if you're in a minibufferless
|
|
|
1694 frame and enter the minibuffer, then all Lisp functions that run see
|
|
|
1695 the selected frame as the minibuffer's frame rather than the minibufferless
|
|
|
1696 frame you came from, so that (e.g.) your typing actually appears in
|
|
|
1697 the minibuffer's frame and things behave sanely.
|
|
|
1698
|
|
|
1699 There's also some weird logic that switches the redirected frame focus
|
|
|
1700 from one frame to another if Lisp code explicitly calls `select-frame'
|
|
|
1701 \(but not if `handle-switch-frame' is called), and saves and restores
|
|
|
1702 the frame focus in window configurations, etc. etc. All of this logic
|
|
|
1703 is heavily #if 0'd, with lots of comments saying "No, this approach
|
|
|
1704 doesn't seem to work, so I'm trying this ... is it reasonable?
|
|
|
1705 Well, I'm not sure ..." that are a red flag indicating crockishness.
|
|
|
1706
|
|
|
1707 Because of our way of doing things, we can avoid all this crock.
|
|
|
1708 Keyboard events never cause a select-frame (who cares what frame
|
|
|
1709 they're associated with? They come from a console, only). We change
|
|
|
1710 the actual WM focus to a surrogate minibuffer frame, so we don't have
|
|
|
1711 to do any internal redirection. In order to get the focus back,
|
|
|
1712 I took the approach in minibuf.el of just checking to see if the
|
|
|
1713 frame we moved to is still the selected frame, and move back to the
|
|
|
1714 old one if so. Conceivably we might have to do the weird "tracking"
|
|
|
1715 that FSFmacs does when `select-frame' is called, but I don't think
|
|
|
1716 so. If the selected frame moved from the minibuffer frame, then
|
|
|
1717 we just leave it there, figuring that someone knows what they're
|
|
|
1718 doing. Because we don't have any redirection recorded anywhere,
|
|
|
1719 it's safe to do this, and we don't end up with unwanted redirection.
|
|
|
1720
|
|
|
1721 */
|
|
|
1722
|
|
|
1723 static void
|
|
|
1724 run_select_frame_hook (void)
|
|
|
1725 {
|
|
|
1726 run_hook (Qselect_frame_hook);
|
|
|
1727 }
|
|
|
1728
|
|
|
1729 static void
|
|
|
1730 run_deselect_frame_hook (void)
|
|
|
1731 {
|
|
|
1732 #if 0 /* unclean! FSF calls this at all sorts of random places,
|
|
|
1733 including a bunch of places in their mouse.el. If this
|
|
|
1734 is implemented, it has to be done cleanly. */
|
|
|
1735 run_hook (Qmouse_leave_buffer_hook); /* #### Correct? It's also
|
|
|
1736 called in `call-interactively'.
|
|
|
1737 Does this mean it will be
|
|
|
1738 called twice? Oh well, FSF
|
|
|
1739 bug -- FSF calls it in
|
|
|
1740 `handle-switch-frame',
|
|
|
1741 which is approximately the
|
|
|
1742 same as the caller of this
|
|
|
1743 function. */
|
|
|
1744 #endif
|
|
|
1745 run_hook (Qdeselect_frame_hook);
|
|
|
1746 }
|
|
|
1747
|
|
280
|
1748 /* When select-frame is called and focus_follows_mouse is false, we want
|
|
|
1749 to tell the window system that the focus should be changed to point to
|
|
|
1750 the new frame. However,
|
|
0
|
1751 sometimes Lisp functions will temporarily change the selected frame
|
|
|
1752 (e.g. to call a function that operates on the selected frame),
|
|
|
1753 and it's annoying if this focus-change happens exactly when
|
|
|
1754 select-frame is called, because then you get some flickering of the
|
|
|
1755 window-manager border and perhaps other undesirable results. We
|
|
|
1756 really only want to change the focus when we're about to retrieve
|
|
|
1757 an event from the user. To do this, we keep track of the frame
|
|
|
1758 where the window-manager focus lies on, and just before waiting
|
|
|
1759 for user events, check the currently selected frame and change
|
|
280
|
1760 the focus as necessary.
|
|
|
1761
|
|
|
1762 On the other hand, if focus_follows_mouse is true, we need to switch the
|
|
|
1763 selected frame back to the frame with window manager focus just before we
|
|
|
1764 execute the next command in Fcommand_loop_1, just as the selected buffer is
|
|
|
1765 reverted after a set-buffer.
|
|
|
1766
|
|
|
1767 Both cases are handled by this function. It must be called as appropriate
|
|
|
1768 from these two places, depending on the value of focus_follows_mouse. */
|
|
|
1769
|
|
|
1770 void
|
|
0
|
1771 investigate_frame_change (void)
|
|
|
1772 {
|
|
|
1773 Lisp_Object devcons, concons;
|
|
|
1774
|
|
|
1775 /* if the selected frame was changed, change the window-system
|
|
|
1776 focus to the new frame. We don't do it when select-frame was
|
|
|
1777 called, to avoid flickering and other unwanted side effects when
|
|
|
1778 the frame is just changed temporarily. */
|
|
|
1779 DEVICE_LOOP_NO_BREAK (devcons, concons)
|
|
|
1780 {
|
|
|
1781 struct device *d = XDEVICE (XCAR (devcons));
|
|
|
1782 Lisp_Object sel_frame = DEVICE_SELECTED_FRAME (d);
|
|
|
1783
|
|
|
1784 /* You'd think that maybe we should use FRAME_WITH_FOCUS_REAL,
|
|
98
|
1785 but that can cause us to end up in an infinite loop focusing
|
|
0
|
1786 between two frames. It seems that since the call to `select-frame'
|
|
|
1787 in emacs_handle_focus_change_final() is based on the _FOR_HOOKS
|
|
|
1788 value, we need to do so too. */
|
|
|
1789 if (!NILP (sel_frame) &&
|
|
|
1790 !EQ (DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d), sel_frame) &&
|
|
|
1791 !NILP (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d)) &&
|
|
|
1792 !EQ (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d), sel_frame))
|
|
|
1793 {
|
|
280
|
1794 /* At this point, we know that the frame has been changed. Now, if
|
|
|
1795 * focus_follows_mouse is not set, we finish off the frame change,
|
|
|
1796 * so that user events will now come from the new frame. Otherwise,
|
|
|
1797 * if focus_follows_mouse is set, no gratuitous frame changing
|
|
|
1798 * should take place. Set the focus back to the frame which was
|
|
|
1799 * originally selected for user input.
|
|
|
1800 */
|
|
|
1801 if (!focus_follows_mouse)
|
|
|
1802 {
|
|
|
1803 /* prevent us from issuing the same request more than once */
|
|
|
1804 DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d) = sel_frame;
|
|
|
1805 MAYBE_DEVMETH (d, focus_on_frame, (XFRAME (sel_frame)));
|
|
|
1806 }
|
|
|
1807 else
|
|
|
1808 {
|
|
|
1809 Lisp_Object old_frame = Qnil;
|
|
|
1810
|
|
|
1811 /* #### Do we really want to check OUGHT ??
|
|
|
1812 * It seems to make sense, though I have never seen us
|
|
|
1813 * get here and have it be non-nil.
|
|
|
1814 */
|
|
|
1815 if (FRAMEP (DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d)))
|
|
380
|
1816 old_frame = DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d);
|
|
280
|
1817 else if (FRAMEP (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d)))
|
|
|
1818 old_frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d);
|
|
|
1819
|
|
|
1820 /* #### Can old_frame ever be NIL? play it safe.. */
|
|
|
1821 if (!NILP (old_frame))
|
|
|
1822 {
|
|
|
1823 /* Fselect_frame is not really the right thing: it frobs the
|
|
|
1824 * buffer stack. But there's no easy way to do the right
|
|
|
1825 * thing, and this code already had this problem anyway.
|
|
|
1826 */
|
|
|
1827 Fselect_frame (old_frame);
|
|
|
1828 }
|
|
|
1829 }
|
|
0
|
1830 }
|
|
|
1831 }
|
|
|
1832 }
|
|
|
1833
|
|
|
1834 static Lisp_Object
|
|
|
1835 cleanup_after_missed_defocusing (Lisp_Object frame)
|
|
|
1836 {
|
|
|
1837 if (FRAMEP (frame) && FRAME_LIVE_P (XFRAME (frame)))
|
|
|
1838 Fselect_frame (frame);
|
|
|
1839 return Qnil;
|
|
|
1840 }
|
|
|
1841
|
|
|
1842 void
|
|
|
1843 emacs_handle_focus_change_preliminary (Lisp_Object frame_inp_and_dev)
|
|
|
1844 {
|
|
|
1845 Lisp_Object frame = Fcar (frame_inp_and_dev);
|
|
|
1846 Lisp_Object device = Fcar (Fcdr (frame_inp_and_dev));
|
|
|
1847 int in_p = !NILP (Fcdr (Fcdr (frame_inp_and_dev)));
|
|
|
1848 struct device *d;
|
|
|
1849
|
|
|
1850 if (!DEVICE_LIVE_P (XDEVICE (device)))
|
|
|
1851 return;
|
|
|
1852 else
|
|
|
1853 d = XDEVICE (device);
|
|
|
1854
|
|
|
1855 /* Any received focus-change notifications render invalid any
|
|
|
1856 pending focus-change requests. */
|
|
|
1857 DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d) = Qnil;
|
|
|
1858 if (in_p)
|
|
|
1859 {
|
|
|
1860 Lisp_Object focus_frame;
|
|
|
1861
|
|
|
1862 if (!FRAME_LIVE_P (XFRAME (frame)))
|
|
|
1863 return;
|
|
|
1864 else
|
|
|
1865 focus_frame = DEVICE_FRAME_WITH_FOCUS_REAL (d);
|
|
|
1866
|
|
|
1867 /* Mark the minibuffer as changed to make sure it gets updated
|
|
|
1868 properly if the echo area is active. */
|
|
272
|
1869 {
|
|
|
1870 struct window *w = XWINDOW (FRAME_MINIBUF_WINDOW (XFRAME (frame)));
|
|
|
1871 MARK_WINDOWS_CHANGED (w);
|
|
|
1872 }
|
|
0
|
1873
|
|
|
1874 if (FRAMEP (focus_frame) && !EQ (frame, focus_frame))
|
|
|
1875 {
|
|
|
1876 /* Oops, we missed a focus-out event. */
|
|
|
1877 DEVICE_FRAME_WITH_FOCUS_REAL (d) = Qnil;
|
|
|
1878 redisplay_redraw_cursor (XFRAME (focus_frame), 1);
|
|
|
1879 }
|
|
|
1880 DEVICE_FRAME_WITH_FOCUS_REAL (d) = frame;
|
|
|
1881 if (!EQ (frame, focus_frame))
|
|
|
1882 {
|
|
|
1883 redisplay_redraw_cursor (XFRAME (frame), 1);
|
|
|
1884 }
|
|
|
1885 }
|
|
|
1886 else
|
|
|
1887 {
|
|
|
1888 /* We ignore the frame reported in the event. If it's different
|
|
|
1889 from where we think the focus was, oh well -- we messed up.
|
|
|
1890 Nonetheless, we pretend we were right, for sensible behavior. */
|
|
|
1891 frame = DEVICE_FRAME_WITH_FOCUS_REAL (d);
|
|
|
1892 if (!NILP (frame))
|
|
|
1893 {
|
|
|
1894 DEVICE_FRAME_WITH_FOCUS_REAL (d) = Qnil;
|
|
|
1895
|
|
|
1896 if (FRAME_LIVE_P (XFRAME (frame)))
|
|
|
1897 redisplay_redraw_cursor (XFRAME (frame), 1);
|
|
|
1898 }
|
|
|
1899 }
|
|
|
1900 }
|
|
|
1901
|
|
|
1902 /* Called from the window-system-specific code when we receive a
|
|
173
|
1903 notification that the focus lies on a particular frame.
|
|
0
|
1904 Argument is a cons: (frame . (device . in-p)) where in-p is non-nil
|
|
|
1905 for focus-in.
|
|
|
1906 */
|
|
|
1907 void
|
|
|
1908 emacs_handle_focus_change_final (Lisp_Object frame_inp_and_dev)
|
|
|
1909 {
|
|
|
1910 Lisp_Object frame = Fcar (frame_inp_and_dev);
|
|
|
1911 Lisp_Object device = Fcar (Fcdr (frame_inp_and_dev));
|
|
|
1912 int in_p = !NILP (Fcdr (Fcdr (frame_inp_and_dev)));
|
|
|
1913 struct device *d;
|
|
|
1914 int count;
|
|
|
1915
|
|
|
1916 if (!DEVICE_LIVE_P (XDEVICE (device)))
|
|
|
1917 return;
|
|
|
1918 else
|
|
|
1919 d = XDEVICE (device);
|
|
|
1920
|
|
|
1921 if (in_p)
|
|
|
1922 {
|
|
|
1923 Lisp_Object focus_frame;
|
|
|
1924
|
|
|
1925 if (!FRAME_LIVE_P (XFRAME (frame)))
|
|
|
1926 return;
|
|
|
1927 else
|
|
|
1928 focus_frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d);
|
|
|
1929
|
|
|
1930 DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d) = frame;
|
|
|
1931 if (FRAMEP (focus_frame) && !EQ (frame, focus_frame))
|
|
|
1932 {
|
|
|
1933 /* Oops, we missed a focus-out event. */
|
|
|
1934 Fselect_frame (focus_frame);
|
|
|
1935 /* Do an unwind-protect in case an error occurs in
|
|
|
1936 the deselect-frame-hook */
|
|
|
1937 count = specpdl_depth ();
|
|
|
1938 record_unwind_protect (cleanup_after_missed_defocusing, frame);
|
|
|
1939 run_deselect_frame_hook ();
|
|
|
1940 unbind_to (count, Qnil);
|
|
|
1941 /* the cleanup method changed the focus frame to nil, so
|
|
|
1942 we need to reflect this */
|
|
|
1943 focus_frame = Qnil;
|
|
|
1944 }
|
|
|
1945 else
|
|
|
1946 Fselect_frame (frame);
|
|
|
1947 if (!EQ (frame, focus_frame))
|
|
|
1948 run_select_frame_hook ();
|
|
|
1949 }
|
|
|
1950 else
|
|
|
1951 {
|
|
|
1952 /* We ignore the frame reported in the event. If it's different
|
|
|
1953 from where we think the focus was, oh well -- we messed up.
|
|
|
1954 Nonetheless, we pretend we were right, for sensible behavior. */
|
|
|
1955 frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d);
|
|
|
1956 if (!NILP (frame))
|
|
|
1957 {
|
|
|
1958 DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d) = Qnil;
|
|
|
1959 run_deselect_frame_hook ();
|
|
|
1960 }
|
|
|
1961 }
|
|
|
1962 }
|
|
|
1963
|
|
|
1964
|
|
|
1965 /**********************************************************************/
|
|
|
1966 /* retrieving the next event */
|
|
|
1967 /**********************************************************************/
|
|
|
1968
|
|
|
1969 static int in_single_console;
|
|
|
1970
|
|
|
1971 /* #### These functions don't currently do anything. */
|
|
|
1972 void
|
|
|
1973 single_console_state (void)
|
|
|
1974 {
|
|
|
1975 in_single_console = 1;
|
|
|
1976 }
|
|
|
1977
|
|
|
1978 void
|
|
|
1979 any_console_state (void)
|
|
|
1980 {
|
|
|
1981 in_single_console = 0;
|
|
|
1982 }
|
|
|
1983
|
|
|
1984 int
|
|
|
1985 in_single_console_state (void)
|
|
|
1986 {
|
|
|
1987 return in_single_console;
|
|
|
1988 }
|
|
|
1989
|
|
185
|
1990 /* the number of keyboard characters read. callint.c wants this. */
|
|
0
|
1991 Charcount num_input_chars;
|
|
|
1992
|
|
|
1993 static void
|
|
108
|
1994 next_event_internal (Lisp_Object target_event, int allow_queued)
|
|
0
|
1995 {
|
|
|
1996 struct gcpro gcpro1;
|
|
|
1997 /* QUIT; This is incorrect - the caller must do this because some
|
|
|
1998 callers (ie, Fnext_event()) do not want to QUIT. */
|
|
|
1999
|
|
|
2000 assert (NILP (XEVENT_NEXT (target_event)));
|
|
|
2001
|
|
|
2002 GCPRO1 (target_event);
|
|
280
|
2003
|
|
|
2004 /* When focus_follows_mouse is nil, if a frame change took place, we need
|
|
|
2005 * to actually switch window manager focus to the selected window now.
|
|
|
2006 */
|
|
|
2007 if (!focus_follows_mouse)
|
|
|
2008 investigate_frame_change ();
|
|
173
|
2009
|
|
0
|
2010 if (allow_queued && !NILP (command_event_queue))
|
|
|
2011 {
|
|
|
2012 Lisp_Object event = dequeue_command_event ();
|
|
|
2013 Fcopy_event (event, target_event);
|
|
|
2014 Fdeallocate_event (event);
|
|
185
|
2015 DEBUG_PRINT_EMACS_EVENT ("command event queue", target_event);
|
|
0
|
2016 }
|
|
|
2017 else
|
|
|
2018 {
|
|
412
|
2019 struct Lisp_Event *e = XEVENT (target_event);
|
|
0
|
2020
|
|
|
2021 /* The command_event_queue was empty. Wait for an event. */
|
|
|
2022 event_stream_next_event (e);
|
|
|
2023 /* If this was a timeout, then we need to extract some data
|
|
|
2024 out of the returned closure and might need to resignal
|
|
|
2025 it. */
|
|
|
2026 if (e->event_type == timeout_event)
|
|
|
2027 {
|
|
|
2028 Lisp_Object tristan, isolde;
|
|
|
2029
|
|
|
2030 e->event.timeout.id_number =
|
|
|
2031 event_stream_resignal_wakeup (e->event.timeout.interval_id, 0,
|
|
|
2032 &tristan, &isolde);
|
|
173
|
2033
|
|
0
|
2034 e->event.timeout.function = tristan;
|
|
|
2035 e->event.timeout.object = isolde;
|
|
|
2036 /* next_event_internal() doesn't print out timeout events
|
|
|
2037 because of the extra info we just set. */
|
|
185
|
2038 DEBUG_PRINT_EMACS_EVENT ("real, timeout", target_event);
|
|
0
|
2039 }
|
|
|
2040
|
|
|
2041 /* If we read a ^G, then set quit-flag but do not discard the ^G.
|
|
|
2042 The callers of next_event_internal() will do one of two things:
|
|
|
2043
|
|
|
2044 -- set Vquit_flag to Qnil. (next-event does this.) This will
|
|
|
2045 cause the ^G to be treated as a normal keystroke.
|
|
|
2046 -- not change Vquit_flag but attempt to enqueue the ^G, at
|
|
|
2047 which point it will be discarded. The next time QUIT is
|
|
|
2048 called, it will notice that Vquit_flag was set.
|
|
|
2049
|
|
|
2050 */
|
|
|
2051 if (e->event_type == key_press_event &&
|
|
|
2052 event_matches_key_specifier_p
|
|
|
2053 (e, make_char (CONSOLE_QUIT_CHAR (XCONSOLE (EVENT_CHANNEL (e))))))
|
|
|
2054 {
|
|
|
2055 Vquit_flag = Qt;
|
|
|
2056 }
|
|
|
2057 }
|
|
|
2058
|
|
|
2059 UNGCPRO;
|
|
|
2060 }
|
|
|
2061
|
|
|
2062 static void
|
|
|
2063 run_pre_idle_hook (void)
|
|
|
2064 {
|
|
|
2065 if (!NILP (Vpre_idle_hook)
|
|
|
2066 && !detect_input_pending ())
|
|
|
2067 safe_run_hook_trapping_errors
|
|
|
2068 ("Error in `pre-idle-hook' (setting hook to nil)",
|
|
|
2069 Qpre_idle_hook, 1);
|
|
|
2070 }
|
|
|
2071
|
|
|
2072 static void push_this_command_keys (Lisp_Object event);
|
|
|
2073 static void push_recent_keys (Lisp_Object event);
|
|
|
2074 static void dribble_out_event (Lisp_Object event);
|
|
|
2075 static void execute_internal_event (Lisp_Object event);
|
|
|
2076
|
|
20
|
2077 DEFUN ("next-event", Fnext_event, 0, 2, 0, /*
|
|
0
|
2078 Return the next available event.
|
|
|
2079 Pass this object to `dispatch-event' to handle it.
|
|
|
2080 In most cases, you will want to use `next-command-event', which returns
|
|
185
|
2081 the next available "user" event (i.e. keypress, button-press,
|
|
0
|
2082 button-release, or menu selection) instead of this function.
|
|
|
2083
|
|
|
2084 If EVENT is non-nil, it should be an event object and will be filled in
|
|
|
2085 and returned; otherwise a new event object will be created and returned.
|
|
|
2086 If PROMPT is non-nil, it should be a string and will be displayed in the
|
|
|
2087 echo area while this function is waiting for an event.
|
|
|
2088
|
|
|
2089 The next available event will be
|
|
|
2090
|
|
|
2091 -- any events in `unread-command-events' or `unread-command-event'; else
|
|
|
2092 -- the next event in the currently executing keyboard macro, if any; else
|
|
|
2093 -- an event queued by `enqueue-eval-event', if any; else
|
|
|
2094 -- the next available event from the window system or terminal driver.
|
|
|
2095
|
|
|
2096 In the last case, this function will block until an event is available.
|
|
|
2097
|
|
|
2098 The returned event will be one of the following types:
|
|
|
2099
|
|
|
2100 -- a key-press event.
|
|
|
2101 -- a button-press or button-release event.
|
|
|
2102 -- a misc-user-event, meaning the user selected an item on a menu or used
|
|
|
2103 the scrollbar.
|
|
|
2104 -- a process event, meaning that output from a subprocess is available.
|
|
|
2105 -- a timeout event, meaning that a timeout has elapsed.
|
|
|
2106 -- an eval event, which simply causes a function to be executed when the
|
|
|
2107 event is dispatched. Eval events are generated by `enqueue-eval-event'
|
|
|
2108 or by certain other conditions happening.
|
|
|
2109 -- a magic event, indicating that some window-system-specific event
|
|
185
|
2110 happened (such as a focus-change notification) that must be handled
|
|
0
|
2111 synchronously with other events. `dispatch-event' knows what to do with
|
|
|
2112 these events.
|
|
20
|
2113 */
|
|
|
2114 (event, prompt))
|
|
0
|
2115 {
|
|
116
|
2116 /* This function can call lisp */
|
|
0
|
2117 /* #### We start out using the selected console before an event
|
|
|
2118 is received, for echoing the partially completed command.
|
|
|
2119 This is most definitely wrong -- there needs to be a separate
|
|
|
2120 echo area for each console! */
|
|
|
2121 struct console *con = XCONSOLE (Vselected_console);
|
|
|
2122 struct command_builder *command_builder =
|
|
|
2123 XCOMMAND_BUILDER (con->command_builder);
|
|
|
2124 int store_this_key = 0;
|
|
|
2125 struct gcpro gcpro1;
|
|
412
|
2126 #ifdef LWLIB_MENUBARS_LUCID
|
|
|
2127 extern int in_menu_callback; /* defined in menubar-x.c */
|
|
|
2128 #endif /* LWLIB_MENUBARS_LUCID */
|
|
138
|
2129
|
|
0
|
2130 GCPRO1 (event);
|
|
|
2131 /* DO NOT do QUIT anywhere within this function or the functions it calls.
|
|
|
2132 We want to read the ^G as an event. */
|
|
|
2133
|
|
138
|
2134 #ifdef LWLIB_MENUBARS_LUCID
|
|
|
2135 /*
|
|
|
2136 * #### Fix the menu code so this isn't necessary.
|
|
|
2137 *
|
|
|
2138 * We cannot allow the lwmenu code to be reentered, because the
|
|
|
2139 * code is not written to be reentrant and will crash. Therefore
|
|
|
2140 * paths from the menu callbacks back into the menu code have to
|
|
|
2141 * be blocked. Fnext_event is the normal path into the menu code,
|
|
|
2142 * so we signal an error here.
|
|
|
2143 */
|
|
|
2144 if (in_menu_callback)
|
|
|
2145 error ("Attempt to call next-event inside menu callback");
|
|
|
2146 #endif /* LWLIB_MENUBARS_LUCID */
|
|
|
2147
|
|
0
|
2148 if (NILP (event))
|
|
189
|
2149 event = Fmake_event (Qnil, Qnil);
|
|
0
|
2150 else
|
|
|
2151 CHECK_LIVE_EVENT (event);
|
|
|
2152
|
|
|
2153 if (!NILP (prompt))
|
|
|
2154 {
|
|
|
2155 Bytecount len;
|
|
|
2156 CHECK_STRING (prompt);
|
|
|
2157
|
|
14
|
2158 len = XSTRING_LENGTH (prompt);
|
|
0
|
2159 if (command_builder->echo_buf_length < len)
|
|
|
2160 len = command_builder->echo_buf_length - 1;
|
|
14
|
2161 memcpy (command_builder->echo_buf, XSTRING_DATA (prompt), len);
|
|
0
|
2162 command_builder->echo_buf[len] = 0;
|
|
|
2163 command_builder->echo_buf_index = len;
|
|
|
2164 echo_area_message (XFRAME (CONSOLE_SELECTED_FRAME (con)),
|
|
|
2165 command_builder->echo_buf,
|
|
|
2166 Qnil, 0,
|
|
|
2167 command_builder->echo_buf_index,
|
|
|
2168 Qcommand);
|
|
|
2169 }
|
|
|
2170
|
|
|
2171 start_over_and_avoid_hosage:
|
|
|
2172
|
|
|
2173 /* If there is something in unread-command-events, simply return it.
|
|
|
2174 But do some error checking to make sure the user hasn't put something
|
|
|
2175 in the unread-command-events that they shouldn't have.
|
|
|
2176 This does not update this-command-keys and recent-keys.
|
|
|
2177 */
|
|
|
2178 if (!NILP (Vunread_command_events))
|
|
|
2179 {
|
|
|
2180 if (!CONSP (Vunread_command_events))
|
|
|
2181 {
|
|
|
2182 Vunread_command_events = Qnil;
|
|
|
2183 signal_error (Qwrong_type_argument,
|
|
|
2184 list3 (Qconsp, Vunread_command_events,
|
|
|
2185 Qunread_command_events));
|
|
|
2186 }
|
|
|
2187 else
|
|
|
2188 {
|
|
|
2189 Lisp_Object e = XCAR (Vunread_command_events);
|
|
|
2190 Vunread_command_events = XCDR (Vunread_command_events);
|
|
|
2191 if (!EVENTP (e) || !command_event_p (e))
|
|
|
2192 signal_error (Qwrong_type_argument,
|
|
|
2193 list3 (Qcommand_event_p, e, Qunread_command_events));
|
|
|
2194 redisplay ();
|
|
|
2195 if (!EQ (e, event))
|
|
|
2196 Fcopy_event (e, event);
|
|
185
|
2197 DEBUG_PRINT_EMACS_EVENT ("unread-command-events", event);
|
|
0
|
2198 }
|
|
|
2199 }
|
|
|
2200
|
|
185
|
2201 /* Do similar for unread-command-event (obsoleteness support). */
|
|
0
|
2202 else if (!NILP (Vunread_command_event))
|
|
|
2203 {
|
|
|
2204 Lisp_Object e = Vunread_command_event;
|
|
|
2205 Vunread_command_event = Qnil;
|
|
173
|
2206
|
|
0
|
2207 if (!EVENTP (e) || !command_event_p (e))
|
|
|
2208 {
|
|
|
2209 signal_error (Qwrong_type_argument,
|
|
|
2210 list3 (Qeventp, e, Qunread_command_event));
|
|
|
2211 }
|
|
|
2212 if (!EQ (e, event))
|
|
|
2213 Fcopy_event (e, event);
|
|
|
2214 redisplay ();
|
|
185
|
2215 DEBUG_PRINT_EMACS_EVENT ("unread-command-event", event);
|
|
0
|
2216 }
|
|
173
|
2217
|
|
0
|
2218 /* If we're executing a keyboard macro, take the next event from that,
|
|
|
2219 and update this-command-keys and recent-keys.
|
|
|
2220 Note that the unread-command-events take precedence over kbd macros.
|
|
|
2221 */
|
|
|
2222 else
|
|
|
2223 {
|
|
|
2224 if (!NILP (Vexecuting_macro))
|
|
|
2225 {
|
|
|
2226 redisplay ();
|
|
|
2227 pop_kbd_macro_event (event); /* This throws past us at
|
|
|
2228 end-of-macro. */
|
|
|
2229 store_this_key = 1;
|
|
185
|
2230 DEBUG_PRINT_EMACS_EVENT ("keyboard macro", event);
|
|
0
|
2231 }
|
|
|
2232 /* Otherwise, read a real event, possibly from the
|
|
|
2233 command_event_queue, and update this-command-keys and
|
|
|
2234 recent-keys. */
|
|
|
2235 else
|
|
|
2236 {
|
|
|
2237 run_pre_idle_hook ();
|
|
|
2238 redisplay ();
|
|
108
|
2239 next_event_internal (event, 1);
|
|
0
|
2240 Vquit_flag = Qnil; /* Read C-g as an event. */
|
|
|
2241 store_this_key = 1;
|
|
|
2242 }
|
|
|
2243 }
|
|
|
2244
|
|
|
2245 status_notify (); /* Notice process change */
|
|
|
2246
|
|
|
2247 #ifdef C_ALLOCA
|
|
|
2248 alloca (0); /* Cause a garbage collection now */
|
|
|
2249 /* Since we can free the most stuff here
|
|
|
2250 * (since this is typically called from
|
|
|
2251 * the command-loop top-level). */
|
|
|
2252 #endif /* C_ALLOCA */
|
|
|
2253
|
|
|
2254 if (object_dead_p (XEVENT (event)->channel))
|
|
|
2255 /* event_console_or_selected may crash if the channel is dead.
|
|
|
2256 Best just to eat it and get the next event. */
|
|
|
2257 goto start_over_and_avoid_hosage;
|
|
|
2258
|
|
|
2259 /* OK, now we can stop the selected-console kludge and use the
|
|
|
2260 actual console from the event. */
|
|
|
2261 con = event_console_or_selected (event);
|
|
|
2262 command_builder = XCOMMAND_BUILDER (con->command_builder);
|
|
|
2263
|
|
|
2264 switch (XEVENT_TYPE (event))
|
|
|
2265 {
|
|
|
2266 default:
|
|
|
2267 goto RETURN;
|
|
|
2268 case button_release_event:
|
|
|
2269 case misc_user_event:
|
|
175
|
2270 /* don't echo menu accelerator keys */
|
|
|
2271 reset_key_echo (command_builder, 1);
|
|
0
|
2272 goto EXECUTE_KEY;
|
|
|
2273 case button_press_event: /* key or mouse input can trigger prompting */
|
|
|
2274 goto STORE_AND_EXECUTE_KEY;
|
|
|
2275 case key_press_event: /* any key input can trigger autosave */
|
|
|
2276 break;
|
|
|
2277 }
|
|
|
2278
|
|
|
2279 maybe_do_auto_save ();
|
|
|
2280 num_input_chars++;
|
|
|
2281 STORE_AND_EXECUTE_KEY:
|
|
|
2282 if (store_this_key)
|
|
|
2283 {
|
|
|
2284 echo_key_event (command_builder, event);
|
|
|
2285 }
|
|
|
2286
|
|
|
2287 EXECUTE_KEY:
|
|
|
2288 /* Store the last-input-event. The semantics of this is that it is
|
|
|
2289 the thing most recently returned by next-command-event. It need
|
|
|
2290 not have come from the keyboard or a keyboard macro, it may have
|
|
|
2291 come from unread-command-events. It's always a command-event (a
|
|
|
2292 key, click, or menu selection), never a motion or process event.
|
|
|
2293 */
|
|
|
2294 if (!EVENTP (Vlast_input_event))
|
|
189
|
2295 Vlast_input_event = Fmake_event (Qnil, Qnil);
|
|
0
|
2296 if (XEVENT_TYPE (Vlast_input_event) == dead_event)
|
|
|
2297 {
|
|
189
|
2298 Vlast_input_event = Fmake_event (Qnil, Qnil);
|
|
0
|
2299 error ("Someone deallocated last-input-event!");
|
|
|
2300 }
|
|
|
2301 if (! EQ (event, Vlast_input_event))
|
|
|
2302 Fcopy_event (event, Vlast_input_event);
|
|
173
|
2303
|
|
0
|
2304 /* last-input-char and last-input-time are derived from
|
|
|
2305 last-input-event.
|
|
|
2306 Note that last-input-char will never have its high-bit set, in an
|
|
|
2307 effort to sidestep the ambiguity between M-x and oslash.
|
|
|
2308 */
|
|
|
2309 Vlast_input_char = Fevent_to_character (Vlast_input_event,
|
|
|
2310 Qnil, Qnil, Qnil);
|
|
|
2311 {
|
|
|
2312 EMACS_TIME t;
|
|
|
2313 EMACS_GET_TIME (t);
|
|
|
2314 if (!CONSP (Vlast_input_time))
|
|
|
2315 Vlast_input_time = Fcons (Qnil, Qnil);
|
|
185
|
2316 XCAR (Vlast_input_time) = make_int ((EMACS_SECS (t) >> 16) & 0xffff);
|
|
|
2317 XCDR (Vlast_input_time) = make_int ((EMACS_SECS (t) >> 0) & 0xffff);
|
|
211
|
2318 if (!CONSP (Vlast_command_event_time))
|
|
|
2319 Vlast_command_event_time = list3 (Qnil, Qnil, Qnil);
|
|
|
2320 XCAR (Vlast_command_event_time) =
|
|
|
2321 make_int ((EMACS_SECS (t) >> 16) & 0xffff);
|
|
|
2322 XCAR (XCDR (Vlast_command_event_time)) =
|
|
|
2323 make_int ((EMACS_SECS (t) >> 0) & 0xffff);
|
|
|
2324 XCAR (XCDR (XCDR (Vlast_command_event_time)))
|
|
|
2325 = make_int (EMACS_USECS (t));
|
|
0
|
2326 }
|
|
|
2327 /* If this key came from the keyboard or from a keyboard macro, then
|
|
|
2328 it goes into the recent-keys and this-command-keys vectors.
|
|
|
2329 If this key came from the keyboard, and we're defining a keyboard
|
|
|
2330 macro, then it goes into the macro.
|
|
|
2331 */
|
|
|
2332 if (store_this_key)
|
|
|
2333 {
|
|
|
2334 push_this_command_keys (event);
|
|
187
|
2335 if (!inhibit_input_event_recording)
|
|
|
2336 push_recent_keys (event);
|
|
0
|
2337 dribble_out_event (event);
|
|
|
2338 if (!NILP (con->defining_kbd_macro) && NILP (Vexecuting_macro))
|
|
|
2339 {
|
|
|
2340 if (!EVENTP (command_builder->current_events))
|
|
|
2341 finalize_kbd_macro_chars (con);
|
|
|
2342 store_kbd_macro_event (event);
|
|
|
2343 }
|
|
|
2344 }
|
|
|
2345 /* If this is the help char and there is a help form, then execute the
|
|
|
2346 help form and swallow this character. This is the only place where
|
|
|
2347 calling Fnext_event() can cause arbitrary lisp code to run. Note
|
|
|
2348 that execute_help_form() calls Fnext_command_event(), which calls
|
|
|
2349 this function, as well as Fdispatch_event.
|
|
|
2350 */
|
|
|
2351 if (!NILP (Vhelp_form) &&
|
|
|
2352 event_matches_key_specifier_p (XEVENT (event), Vhelp_char))
|
|
|
2353 execute_help_form (command_builder, event);
|
|
|
2354
|
|
|
2355 RETURN:
|
|
|
2356 UNGCPRO;
|
|
173
|
2357 return event;
|
|
0
|
2358 }
|
|
|
2359
|
|
20
|
2360 DEFUN ("next-command-event", Fnext_command_event, 0, 2, 0, /*
|
|
185
|
2361 Return the next available "user" event.
|
|
0
|
2362 Pass this object to `dispatch-event' to handle it.
|
|
|
2363
|
|
|
2364 If EVENT is non-nil, it should be an event object and will be filled in
|
|
|
2365 and returned; otherwise a new event object will be created and returned.
|
|
|
2366 If PROMPT is non-nil, it should be a string and will be displayed in the
|
|
|
2367 echo area while this function is waiting for an event.
|
|
|
2368
|
|
|
2369 The event returned will be a keyboard, mouse press, or mouse release event.
|
|
|
2370 If there are non-command events available (mouse motion, sub-process output,
|
|
|
2371 etc) then these will be executed (with `dispatch-event') and discarded. This
|
|
380
|
2372 function is provided as a convenience; it is roughly equivalent to the lisp code
|
|
0
|
2373
|
|
|
2374 (while (progn
|
|
|
2375 (next-event event prompt)
|
|
|
2376 (not (or (key-press-event-p event)
|
|
|
2377 (button-press-event-p event)
|
|
|
2378 (button-release-event-p event)
|
|
|
2379 (misc-user-event-p event))))
|
|
|
2380 (dispatch-event event))
|
|
|
2381
|
|
209
|
2382 but it also makes a provision for displaying keystrokes in the echo area.
|
|
20
|
2383 */
|
|
|
2384 (event, prompt))
|
|
0
|
2385 {
|
|
|
2386 /* This function can GC */
|
|
|
2387 struct gcpro gcpro1;
|
|
|
2388 GCPRO1 (event);
|
|
|
2389 maybe_echo_keys (XCOMMAND_BUILDER
|
|
|
2390 (XCONSOLE (Vselected_console)->
|
|
|
2391 command_builder), 0); /* #### This sucks bigtime */
|
|
|
2392 for (;;)
|
|
|
2393 {
|
|
|
2394 event = Fnext_event (event, prompt);
|
|
|
2395 if (command_event_p (event))
|
|
|
2396 break;
|
|
|
2397 else
|
|
|
2398 execute_internal_event (event);
|
|
|
2399 }
|
|
|
2400 UNGCPRO;
|
|
173
|
2401 return event;
|
|
0
|
2402 }
|
|
|
2403
|
|
|
2404 static void
|
|
|
2405 reset_current_events (struct command_builder *command_builder)
|
|
|
2406 {
|
|
|
2407 Lisp_Object event = command_builder->current_events;
|
|
|
2408 reset_command_builder_event_chain (command_builder);
|
|
|
2409 if (EVENTP (event))
|
|
|
2410 deallocate_event_chain (event);
|
|
|
2411 }
|
|
|
2412
|
|
20
|
2413 DEFUN ("discard-input", Fdiscard_input, 0, 0, 0, /*
|
|
185
|
2414 Discard any pending "user" events.
|
|
0
|
2415 Also cancel any kbd macro being defined.
|
|
|
2416 A user event is a key press, button press, button release, or
|
|
185
|
2417 "misc-user" event (menu selection or scrollbar action).
|
|
20
|
2418 */
|
|
|
2419 ())
|
|
0
|
2420 {
|
|
|
2421 /* This throws away user-input on the queue, but doesn't process any
|
|
|
2422 events. Calling dispatch_event() here leads to a race condition.
|
|
|
2423 */
|
|
189
|
2424 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
0
|
2425 Lisp_Object head = Qnil, tail = Qnil;
|
|
|
2426 Lisp_Object oiq = Vinhibit_quit;
|
|
|
2427 struct gcpro gcpro1, gcpro2;
|
|
|
2428 /* #### not correct here with Vselected_console? Should
|
|
|
2429 discard-input take a console argument, or maybe map over
|
|
|
2430 all consoles? */
|
|
|
2431 struct console *con = XCONSOLE (Vselected_console);
|
|
|
2432
|
|
|
2433 /* next_event_internal() can cause arbitrary Lisp code to be evalled */
|
|
|
2434 GCPRO2 (event, oiq);
|
|
|
2435 Vinhibit_quit = Qt;
|
|
|
2436 /* If a macro was being defined then we have to mark the modeline
|
|
|
2437 has changed to ensure that it gets updated correctly. */
|
|
|
2438 if (!NILP (con->defining_kbd_macro))
|
|
|
2439 MARK_MODELINE_CHANGED;
|
|
|
2440 con->defining_kbd_macro = Qnil;
|
|
|
2441 reset_current_events (XCOMMAND_BUILDER (con->command_builder));
|
|
|
2442
|
|
|
2443 while (!NILP (command_event_queue)
|
|
|
2444 || event_stream_event_pending_p (1))
|
|
|
2445 {
|
|
|
2446 /* This will take stuff off the command_event_queue, or read it
|
|
|
2447 from the event_stream, but it will not block.
|
|
|
2448 */
|
|
108
|
2449 next_event_internal (event, 1);
|
|
0
|
2450 Vquit_flag = Qnil; /* Treat C-g as a user event (ignore it).
|
|
|
2451 It is vitally important that we reset
|
|
|
2452 Vquit_flag here. Otherwise, if we're
|
|
|
2453 reading from a TTY console,
|
|
|
2454 maybe_read_quit_event() will notice
|
|
|
2455 that C-g has been set and send us
|
|
|
2456 another C-g. That will cause us
|
|
|
2457 to get right back here, and read
|
|
|
2458 another C-g, ad infinitum ... */
|
|
|
2459
|
|
|
2460 /* If the event is a user event, ignore it. */
|
|
|
2461 if (!command_event_p (event))
|
|
|
2462 {
|
|
|
2463 /* Otherwise, chain the event onto our list of events not to ignore,
|
|
|
2464 and keep reading until the queue is empty. This does not mean
|
|
|
2465 that if a subprocess is generating an infinite amount of output,
|
|
|
2466 we will never terminate (*provided* that the behavior of
|
|
|
2467 next_event_cb() is correct -- see the comment in events.h),
|
|
|
2468 because this loop ends as soon as there are no more user events
|
|
|
2469 on the command_event_queue or event_stream.
|
|
|
2470 */
|
|
|
2471 enqueue_event (Fcopy_event (event, Qnil), &head, &tail);
|
|
|
2472 }
|
|
|
2473 }
|
|
|
2474
|
|
|
2475 if (!NILP (command_event_queue) || !NILP (command_event_queue_tail))
|
|
|
2476 abort ();
|
|
|
2477
|
|
|
2478 /* Now tack our chain of events back on to the front of the queue.
|
|
|
2479 Actually, since the queue is now drained, we can just replace it.
|
|
|
2480 The effect of this will be that we have deleted all user events
|
|
|
2481 from the input stream without changing the relative ordering of
|
|
|
2482 any other events. (Some events may have been taken from the
|
|
|
2483 event_stream and added to the command_event_queue, however.)
|
|
|
2484
|
|
|
2485 At this time, the command_event_queue will contain only eval_events.
|
|
|
2486 */
|
|
|
2487
|
|
|
2488 command_event_queue = head;
|
|
|
2489 command_event_queue_tail = tail;
|
|
|
2490
|
|
|
2491 Fdeallocate_event (event);
|
|
|
2492 UNGCPRO;
|
|
|
2493
|
|
|
2494 Vinhibit_quit = oiq;
|
|
|
2495 return Qnil;
|
|
|
2496 }
|
|
|
2497
|
|
|
2498
|
|
|
2499 /**********************************************************************/
|
|
|
2500 /* pausing until an action occurs */
|
|
|
2501 /**********************************************************************/
|
|
|
2502
|
|
108
|
2503 /* This is used in accept-process-output, sleep-for and sit-for.
|
|
|
2504 Before running any process_events in these routines, we set
|
|
|
2505 recursive_sit_for to Qt, and use this unwind protect to reset it to
|
|
110
|
2506 Qnil upon exit. When recursive_sit_for is Qt, calling sit-for will
|
|
|
2507 cause it to return immediately.
|
|
173
|
2508
|
|
108
|
2509 All of these routines install timeouts, so we clear the installed
|
|
|
2510 timeout as well.
|
|
|
2511
|
|
380
|
2512 Note: It's very easy to break the desired behaviors of these
|
|
108
|
2513 3 routines. If you make any changes to anything in this area, run
|
|
|
2514 the regression tests at the bottom of the file. -- dmoore */
|
|
173
|
2515
|
|
108
|
2516
|
|
|
2517 static Lisp_Object
|
|
|
2518 sit_for_unwind (Lisp_Object timeout_id)
|
|
|
2519 {
|
|
|
2520 if (!NILP(timeout_id))
|
|
|
2521 Fdisable_timeout (timeout_id);
|
|
|
2522
|
|
|
2523 recursive_sit_for = Qnil;
|
|
|
2524 return Qnil;
|
|
|
2525 }
|
|
|
2526
|
|
0
|
2527 /* #### Is (accept-process-output nil 3) supposed to be like (sleep-for 3)?
|
|
|
2528 */
|
|
|
2529
|
|
20
|
2530 DEFUN ("accept-process-output", Faccept_process_output, 0, 3, 0, /*
|
|
0
|
2531 Allow any pending output from subprocesses to be read by Emacs.
|
|
|
2532 It is read into the process' buffers or given to their filter functions.
|
|
|
2533 Non-nil arg PROCESS means do not return until some output has been received
|
|
86
|
2534 from PROCESS. Nil arg PROCESS means do not return until some output has
|
|
|
2535 been received from any process.
|
|
0
|
2536 If the second arg is non-nil, it is the maximum number of seconds to wait:
|
|
|
2537 this function will return after that much time even if no input has arrived
|
|
|
2538 from PROCESS. This argument may be a float, meaning wait some fractional
|
|
|
2539 part of a second.
|
|
|
2540 If the third arg is non-nil, it is a number of milliseconds that is added
|
|
|
2541 to the second arg. (This exists only for compatibility.)
|
|
|
2542 Return non-nil iff we received any output before the timeout expired.
|
|
20
|
2543 */
|
|
|
2544 (process, timeout_secs, timeout_msecs))
|
|
0
|
2545 {
|
|
|
2546 /* This function can GC */
|
|
|
2547 struct gcpro gcpro1, gcpro2;
|
|
|
2548 Lisp_Object event = Qnil;
|
|
|
2549 Lisp_Object result = Qnil;
|
|
173
|
2550 int timeout_id = -1;
|
|
0
|
2551 int timeout_enabled = 0;
|
|
86
|
2552 int done = 0;
|
|
0
|
2553 struct buffer *old_buffer = current_buffer;
|
|
108
|
2554 int count;
|
|
|
2555
|
|
0
|
2556 /* We preserve the current buffer but nothing else. If a focus
|
|
|
2557 change alters the selected window then the top level event loop
|
|
|
2558 will eventually alter current_buffer to match. In the mean time
|
|
|
2559 we don't want to mess up whatever called this function. */
|
|
|
2560
|
|
|
2561 if (!NILP (process))
|
|
|
2562 CHECK_PROCESS (process);
|
|
|
2563
|
|
|
2564 GCPRO2 (event, process);
|
|
|
2565
|
|
86
|
2566 if (!NILP (timeout_secs) || !NILP (timeout_msecs))
|
|
0
|
2567 {
|
|
|
2568 unsigned long msecs = 0;
|
|
|
2569 if (!NILP (timeout_secs))
|
|
|
2570 msecs = lisp_number_to_milliseconds (timeout_secs, 1);
|
|
|
2571 if (!NILP (timeout_msecs))
|
|
|
2572 {
|
|
|
2573 CHECK_NATNUM (timeout_msecs);
|
|
|
2574 msecs += XINT (timeout_msecs);
|
|
|
2575 }
|
|
|
2576 if (msecs)
|
|
|
2577 {
|
|
|
2578 timeout_id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0);
|
|
|
2579 timeout_enabled = 1;
|
|
|
2580 }
|
|
|
2581 }
|
|
|
2582
|
|
189
|
2583 event = Fmake_event (Qnil, Qnil);
|
|
0
|
2584
|
|
108
|
2585 count = specpdl_depth ();
|
|
|
2586 record_unwind_protect (sit_for_unwind,
|
|
|
2587 timeout_enabled ? make_int (timeout_id) : Qnil);
|
|
|
2588 recursive_sit_for = Qt;
|
|
|
2589
|
|
86
|
2590 while (!done &&
|
|
|
2591 ((NILP (process) && timeout_enabled) ||
|
|
|
2592 (NILP (process) && event_stream_event_pending_p (0)) ||
|
|
|
2593 (!NILP (process))))
|
|
0
|
2594 /* Calling detect_input_pending() is the wrong thing here, because
|
|
|
2595 that considers the Vunread_command_events and command_event_queue.
|
|
|
2596 We don't need to look at the command_event_queue because we are
|
|
|
2597 only interested in process events, which don't go on that. In
|
|
|
2598 fact, we can't read from it anyway, because we put stuff on it.
|
|
|
2599
|
|
|
2600 Note that event_stream->event_pending_p must be called in such
|
|
|
2601 a way that it says whether any events *of any kind* are ready,
|
|
|
2602 not just user events, or (accept-process-output nil) will fail
|
|
|
2603 to dispatch any process events that may be on the queue. It is
|
|
|
2604 not clear to me that this is important, because the top-level
|
|
|
2605 loop will process it, and I don't think that there is ever a
|
|
|
2606 time when one calls accept-process-output with a nil argument
|
|
|
2607 and really need the processes to be handled. */
|
|
|
2608 {
|
|
74
|
2609 /* If our timeout has arrived, we move along. */
|
|
82
|
2610 if (timeout_enabled && !event_stream_wakeup_pending_p (timeout_id, 0))
|
|
74
|
2611 {
|
|
|
2612 timeout_enabled = 0;
|
|
86
|
2613 done = 1; /* We're done. */
|
|
|
2614 continue; /* Don't call next_event_internal */
|
|
74
|
2615 }
|
|
|
2616
|
|
0
|
2617 QUIT; /* next_event_internal() does not QUIT, so check for ^G
|
|
|
2618 before reading output from the process - this makes it
|
|
|
2619 less likely that the filter will actually be aborted.
|
|
|
2620 */
|
|
|
2621
|
|
108
|
2622 next_event_internal (event, 0);
|
|
0
|
2623 /* If C-g was pressed while we were waiting, Vquit_flag got
|
|
|
2624 set and next_event_internal() also returns C-g. When
|
|
|
2625 we enqueue the C-g below, it will get discarded. The
|
|
|
2626 next time through, QUIT will be called and will signal a quit. */
|
|
|
2627 switch (XEVENT_TYPE (event))
|
|
|
2628 {
|
|
|
2629 case process_event:
|
|
|
2630 {
|
|
86
|
2631 if (NILP (process) ||
|
|
|
2632 EQ (XEVENT (event)->event.process.process, process))
|
|
0
|
2633 {
|
|
86
|
2634 done = 1;
|
|
0
|
2635 /* RMS's version always returns nil when proc is nil,
|
|
|
2636 and only returns t if input ever arrived on proc. */
|
|
|
2637 result = Qt;
|
|
|
2638 }
|
|
|
2639
|
|
|
2640 execute_internal_event (event);
|
|
|
2641 break;
|
|
|
2642 }
|
|
|
2643 case timeout_event:
|
|
74
|
2644 /* We execute the event even if it's ours, and notice that it's
|
|
|
2645 happened above. */
|
|
0
|
2646 case pointer_motion_event:
|
|
|
2647 case magic_event:
|
|
|
2648 {
|
|
|
2649 execute_internal_event (event);
|
|
|
2650 break;
|
|
|
2651 }
|
|
|
2652 default:
|
|
|
2653 {
|
|
|
2654 enqueue_command_event_1 (event);
|
|
|
2655 break;
|
|
|
2656 }
|
|
|
2657 }
|
|
|
2658 }
|
|
|
2659
|
|
108
|
2660 unbind_to (count, timeout_enabled ? make_int (timeout_id) : Qnil);
|
|
0
|
2661
|
|
|
2662 Fdeallocate_event (event);
|
|
|
2663 UNGCPRO;
|
|
|
2664 current_buffer = old_buffer;
|
|
|
2665 return result;
|
|
|
2666 }
|
|
|
2667
|
|
20
|
2668 DEFUN ("sleep-for", Fsleep_for, 1, 1, 0, /*
|
|
0
|
2669 Pause, without updating display, for ARG seconds.
|
|
|
2670 ARG may be a float, meaning pause for some fractional part of a second.
|
|
108
|
2671
|
|
110
|
2672 It is recommended that you never call sleep-for from inside of a process
|
|
|
2673 filter function or timer event (either synchronous or asynchronous).
|
|
20
|
2674 */
|
|
|
2675 (seconds))
|
|
0
|
2676 {
|
|
|
2677 /* This function can GC */
|
|
|
2678 unsigned long msecs = lisp_number_to_milliseconds (seconds, 1);
|
|
|
2679 int id;
|
|
|
2680 Lisp_Object event = Qnil;
|
|
108
|
2681 int count;
|
|
0
|
2682 struct gcpro gcpro1;
|
|
|
2683
|
|
|
2684 GCPRO1 (event);
|
|
|
2685
|
|
|
2686 id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0);
|
|
189
|
2687 event = Fmake_event (Qnil, Qnil);
|
|
108
|
2688
|
|
|
2689 count = specpdl_depth ();
|
|
|
2690 record_unwind_protect (sit_for_unwind, make_int (id));
|
|
|
2691 recursive_sit_for = Qt;
|
|
|
2692
|
|
0
|
2693 while (1)
|
|
|
2694 {
|
|
74
|
2695 /* If our timeout has arrived, we move along. */
|
|
|
2696 if (!event_stream_wakeup_pending_p (id, 0))
|
|
|
2697 goto DONE_LABEL;
|
|
|
2698
|
|
0
|
2699 QUIT; /* next_event_internal() does not QUIT, so check for ^G
|
|
|
2700 before reading output from the process - this makes it
|
|
|
2701 less likely that the filter will actually be aborted.
|
|
|
2702 */
|
|
|
2703 /* We're a generator of the command_event_queue, so we can't be a
|
|
|
2704 consumer as well. We don't care about command and eval-events
|
|
|
2705 anyway.
|
|
|
2706 */
|
|
108
|
2707 next_event_internal (event, 0); /* blocks */
|
|
0
|
2708 /* See the comment in accept-process-output about Vquit_flag */
|
|
|
2709 switch (XEVENT_TYPE (event))
|
|
|
2710 {
|
|
|
2711 case timeout_event:
|
|
74
|
2712 /* We execute the event even if it's ours, and notice that it's
|
|
|
2713 happened above. */
|
|
108
|
2714 case process_event:
|
|
0
|
2715 case pointer_motion_event:
|
|
|
2716 case magic_event:
|
|
|
2717 {
|
|
|
2718 execute_internal_event (event);
|
|
|
2719 break;
|
|
|
2720 }
|
|
|
2721 default:
|
|
|
2722 {
|
|
|
2723 enqueue_command_event_1 (event);
|
|
|
2724 break;
|
|
|
2725 }
|
|
|
2726 }
|
|
|
2727 }
|
|
|
2728 DONE_LABEL:
|
|
108
|
2729 unbind_to (count, make_int (id));
|
|
0
|
2730 Fdeallocate_event (event);
|
|
|
2731 UNGCPRO;
|
|
|
2732 return Qnil;
|
|
|
2733 }
|
|
|
2734
|
|
20
|
2735 DEFUN ("sit-for", Fsit_for, 1, 2, 0, /*
|
|
0
|
2736 Perform redisplay, then wait ARG seconds or until user input is available.
|
|
|
2737 ARG may be a float, meaning a fractional part of a second.
|
|
|
2738 Optional second arg non-nil means don't redisplay, just wait for input.
|
|
|
2739 Redisplay is preempted as always if user input arrives, and does not
|
|
108
|
2740 happen if input is available before it starts.
|
|
0
|
2741 Value is t if waited the full time with no input arriving.
|
|
108
|
2742
|
|
110
|
2743 If sit-for is called from within a process filter function or timer
|
|
|
2744 event (either synchronous or asynchronous) it will return immediately.
|
|
20
|
2745 */
|
|
|
2746 (seconds, nodisplay))
|
|
0
|
2747 {
|
|
|
2748 /* This function can GC */
|
|
|
2749 unsigned long msecs = lisp_number_to_milliseconds (seconds, 1);
|
|
|
2750 Lisp_Object event, result;
|
|
|
2751 struct gcpro gcpro1;
|
|
|
2752 int id;
|
|
108
|
2753 int count;
|
|
|
2754
|
|
0
|
2755 /* The unread-command-events count as pending input */
|
|
|
2756 if (!NILP (Vunread_command_events) || !NILP (Vunread_command_event))
|
|
|
2757 return Qnil;
|
|
|
2758
|
|
|
2759 /* If the command-builder already has user-input on it (not eval events)
|
|
|
2760 then that means we're done too.
|
|
|
2761 */
|
|
|
2762 if (!NILP (command_event_queue))
|
|
|
2763 {
|
|
|
2764 EVENT_CHAIN_LOOP (event, command_event_queue)
|
|
|
2765 {
|
|
|
2766 if (command_event_p (event))
|
|
173
|
2767 return Qnil;
|
|
0
|
2768 }
|
|
|
2769 }
|
|
|
2770
|
|
|
2771 /* If we're in a macro, or noninteractive, or early in temacs, then
|
|
|
2772 don't wait. */
|
|
|
2773 if (noninteractive || !NILP (Vexecuting_macro))
|
|
173
|
2774 return Qnil;
|
|
0
|
2775
|
|
380
|
2776 /* Recursive call from a filter function or timeout handler. */
|
|
110
|
2777 if (!NILP(recursive_sit_for))
|
|
|
2778 {
|
|
|
2779 if (!event_stream_event_pending_p (1) && NILP (nodisplay))
|
|
|
2780 {
|
|
|
2781 run_pre_idle_hook ();
|
|
|
2782 redisplay ();
|
|
|
2783 }
|
|
|
2784 return Qnil;
|
|
|
2785 }
|
|
|
2786
|
|
|
2787
|
|
0
|
2788 /* Otherwise, start reading events from the event_stream.
|
|
|
2789 Do this loop at least once even if (sit-for 0) so that we
|
|
|
2790 redisplay when no input pending.
|
|
|
2791 */
|
|
108
|
2792 GCPRO1 (event);
|
|
189
|
2793 event = Fmake_event (Qnil, Qnil);
|
|
0
|
2794
|
|
|
2795 /* Generate the wakeup even if MSECS is 0, so that existing timeout/etc.
|
|
|
2796 events get processed. The old (pre-19.12) code special-cased this
|
|
|
2797 and didn't generate a wakeup, but the resulting behavior was less than
|
|
|
2798 ideal; viz. the occurrence of (sit-for 0.001) scattered throughout
|
|
|
2799 the E-Lisp universe. */
|
|
|
2800
|
|
|
2801 id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0);
|
|
|
2802
|
|
108
|
2803 count = specpdl_depth ();
|
|
|
2804 record_unwind_protect (sit_for_unwind, make_int (id));
|
|
|
2805 recursive_sit_for = Qt;
|
|
|
2806
|
|
0
|
2807 while (1)
|
|
|
2808 {
|
|
|
2809 /* If there is no user input pending, then redisplay.
|
|
|
2810 */
|
|
|
2811 if (!event_stream_event_pending_p (1) && NILP (nodisplay))
|
|
|
2812 {
|
|
|
2813 run_pre_idle_hook ();
|
|
|
2814 redisplay ();
|
|
|
2815 }
|
|
|
2816
|
|
74
|
2817 /* If our timeout has arrived, we move along. */
|
|
|
2818 if (!event_stream_wakeup_pending_p (id, 0))
|
|
0
|
2819 {
|
|
|
2820 result = Qt;
|
|
|
2821 goto DONE_LABEL;
|
|
|
2822 }
|
|
|
2823
|
|
|
2824 QUIT; /* next_event_internal() does not QUIT, so check for ^G
|
|
|
2825 before reading output from the process - this makes it
|
|
|
2826 less likely that the filter will actually be aborted.
|
|
|
2827 */
|
|
|
2828 /* We're a generator of the command_event_queue, so we can't be a
|
|
|
2829 consumer as well. In fact, we know there's nothing on the
|
|
|
2830 command_event_queue that we didn't just put there.
|
|
|
2831 */
|
|
108
|
2832 next_event_internal (event, 0); /* blocks */
|
|
0
|
2833 /* See the comment in accept-process-output about Vquit_flag */
|
|
|
2834
|
|
|
2835 if (command_event_p (event))
|
|
|
2836 {
|
|
108
|
2837 QUIT; /* If the command was C-g check it here
|
|
|
2838 so that we abort out of the sit-for,
|
|
|
2839 not the next command. sleep-for and
|
|
|
2840 accept-process-output continue looping
|
|
|
2841 so they check QUIT again implicitly.*/
|
|
0
|
2842 result = Qnil;
|
|
|
2843 goto DONE_LABEL;
|
|
|
2844 }
|
|
|
2845 switch (XEVENT_TYPE (event))
|
|
|
2846 {
|
|
|
2847 case eval_event:
|
|
|
2848 {
|
|
|
2849 /* eval-events get delayed until later. */
|
|
|
2850 enqueue_command_event (Fcopy_event (event, Qnil));
|
|
|
2851 break;
|
|
|
2852 }
|
|
173
|
2853
|
|
0
|
2854 case timeout_event:
|
|
74
|
2855 /* We execute the event even if it's ours, and notice that it's
|
|
|
2856 happened above. */
|
|
|
2857 default:
|
|
0
|
2858 {
|
|
|
2859 execute_internal_event (event);
|
|
|
2860 break;
|
|
|
2861 }
|
|
|
2862 }
|
|
|
2863 }
|
|
|
2864
|
|
|
2865 DONE_LABEL:
|
|
108
|
2866 unbind_to (count, make_int (id));
|
|
0
|
2867
|
|
|
2868 /* Put back the event (if any) that made Fsit_for() exit before the
|
|
|
2869 timeout. Note that it is being added to the back of the queue, which
|
|
|
2870 would be inappropriate if there were any user events on the queue
|
|
|
2871 already: we would be misordering them. But we know that there are
|
|
|
2872 no user-events on the queue, or else we would not have reached this
|
|
|
2873 point at all.
|
|
|
2874 */
|
|
|
2875 if (NILP (result))
|
|
|
2876 enqueue_command_event (event);
|
|
|
2877 else
|
|
|
2878 Fdeallocate_event (event);
|
|
|
2879
|
|
|
2880 UNGCPRO;
|
|
173
|
2881 return result;
|
|
0
|
2882 }
|
|
|
2883
|
|
|
2884 /* This handy little function is used by xselect.c and energize.c to
|
|
|
2885 wait for replies from processes that aren't really processes (that is,
|
|
|
2886 the X server and the Energize server).
|
|
|
2887 */
|
|
|
2888 void
|
|
|
2889 wait_delaying_user_input (int (*predicate) (void *arg), void *predicate_arg)
|
|
|
2890 {
|
|
|
2891 /* This function can GC */
|
|
189
|
2892 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
0
|
2893 struct gcpro gcpro1;
|
|
|
2894 GCPRO1 (event);
|
|
|
2895
|
|
|
2896 while (!(*predicate) (predicate_arg))
|
|
|
2897 {
|
|
|
2898 QUIT; /* next_event_internal() does not QUIT. */
|
|
|
2899
|
|
|
2900 /* We're a generator of the command_event_queue, so we can't be a
|
|
|
2901 consumer as well. Also, we have no reason to consult the
|
|
|
2902 command_event_queue; there are only user and eval-events there,
|
|
|
2903 and we'd just have to put them back anyway.
|
|
|
2904 */
|
|
108
|
2905 next_event_internal (event, 0);
|
|
0
|
2906 /* See the comment in accept-process-output about Vquit_flag */
|
|
|
2907 if (command_event_p (event)
|
|
|
2908 || (XEVENT_TYPE (event) == eval_event)
|
|
|
2909 || (XEVENT_TYPE (event) == magic_eval_event))
|
|
|
2910 enqueue_command_event_1 (event);
|
|
|
2911 else
|
|
|
2912 execute_internal_event (event);
|
|
|
2913 }
|
|
|
2914 UNGCPRO;
|
|
|
2915 }
|
|
|
2916
|
|
|
2917
|
|
|
2918 /**********************************************************************/
|
|
|
2919 /* dispatching events; command builder */
|
|
|
2920 /**********************************************************************/
|
|
|
2921
|
|
|
2922 static void
|
|
|
2923 execute_internal_event (Lisp_Object event)
|
|
|
2924 {
|
|
|
2925 /* events on dead channels get silently eaten */
|
|
|
2926 if (object_dead_p (XEVENT (event)->channel))
|
|
|
2927 return;
|
|
|
2928
|
|
|
2929 /* This function can GC */
|
|
173
|
2930 switch (XEVENT_TYPE (event))
|
|
0
|
2931 {
|
|
|
2932 case empty_event:
|
|
|
2933 return;
|
|
|
2934
|
|
|
2935 case eval_event:
|
|
|
2936 {
|
|
173
|
2937 call1 (XEVENT (event)->event.eval.function,
|
|
0
|
2938 XEVENT (event)->event.eval.object);
|
|
|
2939 return;
|
|
|
2940 }
|
|
|
2941
|
|
|
2942 case magic_eval_event:
|
|
|
2943 {
|
|
|
2944 (XEVENT (event)->event.magic_eval.internal_function)
|
|
|
2945 (XEVENT (event)->event.magic_eval.object);
|
|
|
2946 return;
|
|
|
2947 }
|
|
|
2948
|
|
|
2949 case pointer_motion_event:
|
|
|
2950 {
|
|
|
2951 if (!NILP (Vmouse_motion_handler))
|
|
|
2952 call1 (Vmouse_motion_handler, event);
|
|
|
2953 return;
|
|
|
2954 }
|
|
|
2955
|
|
|
2956 case process_event:
|
|
|
2957 {
|
|
|
2958 Lisp_Object p = XEVENT (event)->event.process.process;
|
|
|
2959 Charcount readstatus;
|
|
|
2960
|
|
|
2961 assert (PROCESSP (p));
|
|
|
2962 while ((readstatus = read_process_output (p)) > 0)
|
|
|
2963 ;
|
|
|
2964 if (readstatus > 0)
|
|
|
2965 ; /* this clauses never gets executed but allows the #ifdefs
|
|
|
2966 to work cleanly. */
|
|
|
2967 #ifdef EWOULDBLOCK
|
|
|
2968 else if (readstatus == -1 && errno == EWOULDBLOCK)
|
|
|
2969 ;
|
|
|
2970 #endif /* EWOULDBLOCK */
|
|
|
2971 #ifdef EAGAIN
|
|
|
2972 else if (readstatus == -1 && errno == EAGAIN)
|
|
|
2973 ;
|
|
|
2974 #endif /* EAGAIN */
|
|
173
|
2975 else if ((readstatus == 0 &&
|
|
0
|
2976 /* Note that we cannot distinguish between no input
|
|
|
2977 available now and a closed pipe.
|
|
|
2978 With luck, a closed pipe will be accompanied by
|
|
|
2979 subprocess termination and SIGCHLD. */
|
|
|
2980 (!network_connection_p (p) ||
|
|
|
2981 /*
|
|
|
2982 When connected to ToolTalk (i.e.
|
|
|
2983 connected_via_filedesc_p()), it's not possible to
|
|
|
2984 reliably determine whether there is a message
|
|
|
2985 waiting for ToolTalk to receive. ToolTalk expects
|
|
|
2986 to have tt_message_receive() called exactly once
|
|
|
2987 every time the file descriptor becomes active, so
|
|
|
2988 the filter function forces this by returning 0.
|
|
|
2989 Emacs must not interpret this as a closed pipe. */
|
|
|
2990 connected_via_filedesc_p (XPROCESS (p))))
|
|
|
2991 #ifdef HAVE_PTYS
|
|
|
2992 /* On some OSs with ptys, when the process on one end of
|
|
|
2993 a pty exits, the other end gets an error reading with
|
|
|
2994 errno = EIO instead of getting an EOF (0 bytes read).
|
|
|
2995 Therefore, if we get an error reading and errno =
|
|
|
2996 EIO, just continue, because the child process has
|
|
|
2997 exited and should clean itself up soon (e.g. when we
|
|
|
2998 get a SIGCHLD). */
|
|
|
2999 || (readstatus == -1 && errno == EIO)
|
|
|
3000 #endif
|
|
|
3001 )
|
|
|
3002 {
|
|
80
|
3003 /* Currently, we rely on SIGCHLD to indicate that the
|
|
|
3004 process has terminated. Unfortunately, on some systems
|
|
|
3005 the SIGCHLD gets missed some of the time. So we put an
|
|
|
3006 additional check in status_notify() to see whether a
|
|
|
3007 process has terminated. We must tell status_notify()
|
|
|
3008 to enable that check, and we do so now. */
|
|
0
|
3009 kick_status_notify ();
|
|
|
3010 }
|
|
|
3011 else
|
|
|
3012 {
|
|
|
3013 /* Deactivate network connection */
|
|
|
3014 Lisp_Object status = Fprocess_status (p);
|
|
|
3015 if (EQ (status, Qopen)
|
|
|
3016 /* In case somebody changes the theory of whether to
|
|
|
3017 return open as opposed to run for network connection
|
|
|
3018 "processes"... */
|
|
|
3019 || EQ (status, Qrun))
|
|
|
3020 update_process_status (p, Qexit, 256, 0);
|
|
|
3021 deactivate_process (p);
|
|
|
3022 }
|
|
|
3023
|
|
|
3024 /* We must call status_notify here to allow the
|
|
|
3025 event_stream->unselect_process_cb to be run if appropriate.
|
|
|
3026 Otherwise, dead fds may be selected for, and we will get a
|
|
|
3027 continuous stream of process events for them. Since we don't
|
|
|
3028 return until all process events have been flushed, we would
|
|
|
3029 get stuck here, processing events on a process whose status
|
|
|
3030 was 'exit. Call this after dispatch-event, or the fds will
|
|
|
3031 have been closed before we read the last data from them.
|
|
|
3032 It's safe for the filter to signal an error because
|
|
|
3033 status_notify() will be called on return to top-level.
|
|
|
3034 */
|
|
|
3035 status_notify ();
|
|
|
3036 return;
|
|
|
3037 }
|
|
|
3038
|
|
|
3039 case timeout_event:
|
|
|
3040 {
|
|
412
|
3041 struct Lisp_Event *e = XEVENT (event);
|
|
0
|
3042 if (!NILP (e->event.timeout.function))
|
|
|
3043 call1 (e->event.timeout.function,
|
|
|
3044 e->event.timeout.object);
|
|
|
3045 return;
|
|
|
3046 }
|
|
|
3047 case magic_event:
|
|
|
3048 {
|
|
|
3049 event_stream_handle_magic_event (XEVENT (event));
|
|
|
3050 return;
|
|
|
3051 }
|
|
|
3052 default:
|
|
|
3053 abort ();
|
|
|
3054 }
|
|
|
3055 }
|
|
|
3056
|
|
|
3057
|
|
|
3058
|
|
|
3059 static void
|
|
|
3060 this_command_keys_replace_suffix (Lisp_Object suffix, Lisp_Object chain)
|
|
|
3061 {
|
|
|
3062 Lisp_Object first_before_suffix =
|
|
|
3063 event_chain_find_previous (Vthis_command_keys, suffix);
|
|
|
3064
|
|
|
3065 if (NILP (first_before_suffix))
|
|
|
3066 Vthis_command_keys = chain;
|
|
|
3067 else
|
|
|
3068 XSET_EVENT_NEXT (first_before_suffix, chain);
|
|
|
3069 deallocate_event_chain (suffix);
|
|
|
3070 Vthis_command_keys_tail = event_chain_tail (chain);
|
|
|
3071 }
|
|
|
3072
|
|
|
3073 static void
|
|
|
3074 command_builder_replace_suffix (struct command_builder *builder,
|
|
|
3075 Lisp_Object suffix, Lisp_Object chain)
|
|
|
3076 {
|
|
|
3077 Lisp_Object first_before_suffix =
|
|
|
3078 event_chain_find_previous (builder->current_events, suffix);
|
|
|
3079
|
|
|
3080 if (NILP (first_before_suffix))
|
|
|
3081 builder->current_events = chain;
|
|
|
3082 else
|
|
|
3083 XSET_EVENT_NEXT (first_before_suffix, chain);
|
|
|
3084 deallocate_event_chain (suffix);
|
|
|
3085 builder->most_current_event = event_chain_tail (chain);
|
|
|
3086 }
|
|
|
3087
|
|
|
3088 static Lisp_Object
|
|
|
3089 command_builder_find_leaf_1 (struct command_builder *builder)
|
|
|
3090 {
|
|
|
3091 Lisp_Object event0 = builder->current_events;
|
|
|
3092
|
|
|
3093 if (NILP (event0))
|
|
173
|
3094 return Qnil;
|
|
0
|
3095
|
|
|
3096 return event_binding (event0, 1);
|
|
|
3097 }
|
|
|
3098
|
|
412
|
3099 #if defined(HAVE_X_WINDOWS) && defined(LWLIB_MENUBARS_LUCID)
|
|
|
3100 static void
|
|
|
3101 menu_move_up (void)
|
|
|
3102 {
|
|
|
3103 widget_value *current, *prev;
|
|
|
3104 widget_value *entries;
|
|
|
3105
|
|
|
3106 current = lw_get_entries (False);
|
|
|
3107 entries = lw_get_entries (True);
|
|
|
3108 prev = NULL;
|
|
|
3109 if (current != entries)
|
|
|
3110 {
|
|
|
3111 while (entries != current)
|
|
|
3112 {
|
|
|
3113 if (entries->name /*&& entries->enabled*/) prev = entries;
|
|
|
3114 entries = entries->next;
|
|
|
3115 assert (entries);
|
|
|
3116 }
|
|
|
3117 }
|
|
|
3118
|
|
|
3119 if (!prev)
|
|
|
3120 /* move to last item */
|
|
|
3121 {
|
|
|
3122 while (entries->next)
|
|
|
3123 {
|
|
|
3124 if (entries->name /*&& entries->enabled*/) prev = entries;
|
|
|
3125 entries = entries->next;
|
|
|
3126 }
|
|
|
3127 if (prev)
|
|
|
3128 {
|
|
|
3129 if (entries->name /*&& entries->enabled*/)
|
|
|
3130 prev = entries;
|
|
|
3131 }
|
|
|
3132 else
|
|
|
3133 {
|
|
|
3134 /* no selectable items in this menu, pop up to previous level */
|
|
|
3135 lw_pop_menu ();
|
|
|
3136 return;
|
|
|
3137 }
|
|
|
3138 }
|
|
|
3139 lw_set_item (prev);
|
|
|
3140 }
|
|
|
3141
|
|
|
3142 static void
|
|
|
3143 menu_move_down (void)
|
|
|
3144 {
|
|
|
3145 widget_value *current;
|
|
|
3146 widget_value *new;
|
|
|
3147
|
|
|
3148 current = lw_get_entries (False);
|
|
|
3149 new = current;
|
|
|
3150
|
|
|
3151 while (new->next)
|
|
|
3152 {
|
|
|
3153 new = new->next;
|
|
|
3154 if (new->name /*&& new->enabled*/) break;
|
|
|
3155 }
|
|
|
3156
|
|
|
3157 if (new==current||!(new->name/*||new->enabled*/))
|
|
|
3158 {
|
|
|
3159 new = lw_get_entries (True);
|
|
|
3160 while (new!=current)
|
|
|
3161 {
|
|
|
3162 if (new->name /*&& new->enabled*/) break;
|
|
|
3163 new = new->next;
|
|
|
3164 }
|
|
|
3165 if (new==current&&!(new->name /*|| new->enabled*/))
|
|
|
3166 {
|
|
|
3167 lw_pop_menu ();
|
|
|
3168 return;
|
|
|
3169 }
|
|
|
3170 }
|
|
|
3171
|
|
|
3172 lw_set_item (new);
|
|
|
3173 }
|
|
|
3174
|
|
|
3175 static void
|
|
|
3176 menu_move_left (void)
|
|
|
3177 {
|
|
|
3178 int level = lw_menu_level ();
|
|
|
3179 int l = level;
|
|
|
3180 widget_value *current;
|
|
|
3181
|
|
|
3182 while (level >= 3)
|
|
|
3183 {
|
|
|
3184 --level;
|
|
|
3185 lw_pop_menu ();
|
|
|
3186 }
|
|
|
3187 menu_move_up ();
|
|
|
3188 current = lw_get_entries (False);
|
|
|
3189 if (l > 2 && current->contents)
|
|
|
3190 lw_push_menu (current->contents);
|
|
|
3191 }
|
|
|
3192
|
|
|
3193 static void
|
|
|
3194 menu_move_right (void)
|
|
|
3195 {
|
|
|
3196 int level = lw_menu_level ();
|
|
|
3197 int l = level;
|
|
|
3198 widget_value *current;
|
|
|
3199
|
|
|
3200 while (level >= 3)
|
|
|
3201 {
|
|
|
3202 --level;
|
|
|
3203 lw_pop_menu ();
|
|
|
3204 }
|
|
|
3205 menu_move_down ();
|
|
|
3206 current = lw_get_entries (False);
|
|
|
3207 if (l > 2 && current->contents)
|
|
|
3208 lw_push_menu (current->contents);
|
|
|
3209 }
|
|
|
3210
|
|
|
3211 static void
|
|
|
3212 menu_select_item (widget_value *val)
|
|
|
3213 {
|
|
|
3214 if (val == NULL)
|
|
|
3215 val = lw_get_entries (False);
|
|
|
3216
|
|
|
3217 /* is match a submenu? */
|
|
|
3218
|
|
|
3219 if (val->contents)
|
|
|
3220 {
|
|
|
3221 /* enter the submenu */
|
|
|
3222
|
|
|
3223 lw_set_item (val);
|
|
|
3224 lw_push_menu (val->contents);
|
|
|
3225 }
|
|
|
3226 else
|
|
|
3227 {
|
|
|
3228 /* Execute the menu entry by calling the menu's `select'
|
|
|
3229 callback function
|
|
|
3230 */
|
|
|
3231 lw_kill_menus (val);
|
|
|
3232 }
|
|
|
3233 }
|
|
|
3234
|
|
|
3235 static Lisp_Object
|
|
|
3236 command_builder_operate_menu_accelerator (struct command_builder *builder)
|
|
|
3237 {
|
|
|
3238 /* this function can GC */
|
|
|
3239
|
|
|
3240 struct console *con = XCONSOLE (Vselected_console);
|
|
|
3241 Lisp_Object evee = builder->most_current_event;
|
|
|
3242 Lisp_Object binding;
|
|
|
3243 widget_value *entries;
|
|
|
3244
|
|
|
3245 extern int lw_menu_accelerate; /* lwlib.c */
|
|
|
3246
|
|
|
3247 #if 0
|
|
|
3248 {
|
|
|
3249 int i;
|
|
|
3250 Lisp_Object t;
|
|
|
3251 char buf[50];
|
|
|
3252
|
|
|
3253 t = builder->current_events;
|
|
|
3254 i = 0;
|
|
|
3255 while (!NILP (t))
|
|
|
3256 {
|
|
|
3257 i++;
|
|
|
3258 sprintf (buf,"OPERATE (%d): ",i);
|
|
|
3259 write_c_string (buf, Qexternal_debugging_output);
|
|
|
3260 print_internal (t, Qexternal_debugging_output, 1);
|
|
|
3261 write_c_string ("\n", Qexternal_debugging_output);
|
|
|
3262 t = XEVENT_NEXT (t);
|
|
|
3263 }
|
|
|
3264 }
|
|
|
3265 #endif /* 0 */
|
|
|
3266
|
|
|
3267 /* menu accelerator keys don't go into keyboard macros */
|
|
|
3268 if (!NILP (con->defining_kbd_macro) && NILP (Vexecuting_macro))
|
|
|
3269 con->kbd_macro_ptr = con->kbd_macro_end;
|
|
|
3270
|
|
|
3271 /* don't echo menu accelerator keys */
|
|
|
3272 /*reset_key_echo (builder, 1);*/
|
|
|
3273
|
|
|
3274 if (!lw_menu_accelerate)
|
|
|
3275 {
|
|
|
3276 /* `convert' mouse display to keyboard display
|
|
|
3277 by entering the open submenu
|
|
|
3278 */
|
|
|
3279 entries = lw_get_entries (False);
|
|
|
3280 if (entries->contents)
|
|
|
3281 {
|
|
|
3282 lw_push_menu (entries->contents);
|
|
|
3283 lw_display_menu (CurrentTime);
|
|
|
3284 }
|
|
|
3285 }
|
|
|
3286
|
|
|
3287 /* compare event to the current menu accelerators */
|
|
|
3288
|
|
|
3289 entries=lw_get_entries (True);
|
|
|
3290
|
|
|
3291 while (entries)
|
|
|
3292 {
|
|
|
3293 Lisp_Object accel;
|
|
|
3294 VOID_TO_LISP (accel, entries->accel);
|
|
|
3295 if (entries->name && !NILP (accel))
|
|
|
3296 {
|
|
|
3297 if (event_matches_key_specifier_p (XEVENT (evee), accel))
|
|
|
3298 {
|
|
|
3299 /* a match! */
|
|
|
3300
|
|
|
3301 menu_select_item (entries);
|
|
|
3302
|
|
|
3303 if (lw_menu_active) lw_display_menu (CurrentTime);
|
|
|
3304
|
|
|
3305 reset_this_command_keys (Vselected_console, 1);
|
|
|
3306 /*reset_command_builder_event_chain (builder);*/
|
|
|
3307 return Vmenu_accelerator_map;
|
|
|
3308 }
|
|
|
3309 }
|
|
|
3310 entries = entries->next;
|
|
|
3311 }
|
|
|
3312
|
|
|
3313 /* try to look up event in menu-accelerator-map */
|
|
|
3314
|
|
|
3315 binding = event_binding_in (evee, Vmenu_accelerator_map, 1);
|
|
|
3316
|
|
|
3317 if (NILP (binding))
|
|
|
3318 {
|
|
|
3319 /* beep at user for undefined key */
|
|
|
3320 return Qnil;
|
|
|
3321 }
|
|
|
3322 else
|
|
|
3323 {
|
|
|
3324 if (EQ (binding, Qmenu_quit))
|
|
|
3325 {
|
|
|
3326 /* turn off menus and set quit flag */
|
|
|
3327 lw_kill_menus (NULL);
|
|
|
3328 Vquit_flag = Qt;
|
|
|
3329 }
|
|
|
3330 else if (EQ (binding, Qmenu_up))
|
|
|
3331 {
|
|
|
3332 int level = lw_menu_level ();
|
|
|
3333 if (level > 2)
|
|
|
3334 menu_move_up ();
|
|
|
3335 }
|
|
|
3336 else if (EQ (binding, Qmenu_down))
|
|
|
3337 {
|
|
|
3338 int level = lw_menu_level ();
|
|
|
3339 if (level > 2)
|
|
|
3340 menu_move_down ();
|
|
|
3341 else
|
|
|
3342 menu_select_item (NULL);
|
|
|
3343 }
|
|
|
3344 else if (EQ (binding, Qmenu_left))
|
|
|
3345 {
|
|
|
3346 int level = lw_menu_level ();
|
|
|
3347 if (level > 3)
|
|
|
3348 {
|
|
|
3349 lw_pop_menu ();
|
|
|
3350 lw_display_menu (CurrentTime);
|
|
|
3351 }
|
|
|
3352 else
|
|
|
3353 menu_move_left ();
|
|
|
3354 }
|
|
|
3355 else if (EQ (binding, Qmenu_right))
|
|
|
3356 {
|
|
|
3357 int level = lw_menu_level ();
|
|
|
3358 if (level > 2 &&
|
|
|
3359 lw_get_entries (False)->contents)
|
|
|
3360 {
|
|
|
3361 widget_value *current = lw_get_entries (False);
|
|
|
3362 if (current->contents)
|
|
|
3363 menu_select_item (NULL);
|
|
|
3364 }
|
|
|
3365 else
|
|
|
3366 menu_move_right ();
|
|
|
3367 }
|
|
|
3368 else if (EQ (binding, Qmenu_select))
|
|
|
3369 menu_select_item (NULL);
|
|
|
3370 else if (EQ (binding, Qmenu_escape))
|
|
|
3371 {
|
|
|
3372 int level = lw_menu_level ();
|
|
|
3373
|
|
|
3374 if (level > 2)
|
|
|
3375 {
|
|
|
3376 lw_pop_menu ();
|
|
|
3377 lw_display_menu (CurrentTime);
|
|
|
3378 }
|
|
|
3379 else
|
|
|
3380 {
|
|
|
3381 /* turn off menus quietly */
|
|
|
3382 lw_kill_menus (NULL);
|
|
|
3383 }
|
|
|
3384 }
|
|
|
3385 else if (KEYMAPP (binding))
|
|
|
3386 {
|
|
|
3387 /* prefix key */
|
|
|
3388 reset_this_command_keys (Vselected_console, 1);
|
|
|
3389 /*reset_command_builder_event_chain (builder);*/
|
|
|
3390 return binding;
|
|
|
3391 }
|
|
|
3392 else
|
|
|
3393 {
|
|
|
3394 /* turn off menus and execute binding */
|
|
|
3395 lw_kill_menus (NULL);
|
|
|
3396 reset_this_command_keys (Vselected_console, 1);
|
|
|
3397 /*reset_command_builder_event_chain (builder);*/
|
|
|
3398 return binding;
|
|
|
3399 }
|
|
|
3400 }
|
|
|
3401
|
|
|
3402 if (lw_menu_active) lw_display_menu (CurrentTime);
|
|
|
3403
|
|
|
3404 reset_this_command_keys (Vselected_console, 1);
|
|
|
3405 /*reset_command_builder_event_chain (builder);*/
|
|
|
3406
|
|
|
3407 return Vmenu_accelerator_map;
|
|
|
3408 }
|
|
|
3409
|
|
|
3410 static Lisp_Object
|
|
|
3411 menu_accelerator_junk_on_error (Lisp_Object errordata, Lisp_Object ignored)
|
|
|
3412 {
|
|
|
3413 Vmenu_accelerator_prefix = Qnil;
|
|
|
3414 Vmenu_accelerator_modifiers = Qnil;
|
|
|
3415 Vmenu_accelerator_enabled = Qnil;
|
|
|
3416 if (!NILP (errordata))
|
|
|
3417 {
|
|
|
3418 Lisp_Object args[2];
|
|
|
3419
|
|
|
3420 args[0] = build_string ("Error in menu accelerators (setting to nil)");
|
|
|
3421 /* #### This should call
|
|
|
3422 (with-output-to-string (display-error errordata))
|
|
|
3423 but that stuff is all in Lisp currently. */
|
|
|
3424 args[1] = errordata;
|
|
|
3425 warn_when_safe_lispobj
|
|
|
3426 (Qerror, Qwarning,
|
|
|
3427 emacs_doprnt_string_lisp ((CONST Bufbyte *) "%s: %s",
|
|
|
3428 Qnil, -1, 2, args));
|
|
|
3429 }
|
|
|
3430
|
|
|
3431 return Qnil;
|
|
|
3432 }
|
|
|
3433
|
|
|
3434 static Lisp_Object
|
|
|
3435 menu_accelerator_safe_compare (Lisp_Object event0)
|
|
|
3436 {
|
|
|
3437 if (CONSP (Vmenu_accelerator_prefix))
|
|
|
3438 {
|
|
|
3439 Lisp_Object t;
|
|
|
3440 t=Vmenu_accelerator_prefix;
|
|
|
3441 while (!NILP (t)
|
|
|
3442 && !NILP (event0)
|
|
|
3443 && event_matches_key_specifier_p (XEVENT (event0), Fcar (t)))
|
|
|
3444 {
|
|
|
3445 t = Fcdr (t);
|
|
|
3446 event0 = XEVENT_NEXT (event0);
|
|
|
3447 }
|
|
|
3448 if (!NILP (t))
|
|
|
3449 return Qnil;
|
|
|
3450 }
|
|
|
3451 else if (NILP (event0))
|
|
|
3452 return Qnil;
|
|
|
3453 else if (event_matches_key_specifier_p (XEVENT (event0), Vmenu_accelerator_prefix))
|
|
|
3454 event0 = XEVENT_NEXT (event0);
|
|
|
3455 else
|
|
|
3456 return Qnil;
|
|
|
3457 return event0;
|
|
|
3458 }
|
|
|
3459
|
|
|
3460 static Lisp_Object
|
|
|
3461 menu_accelerator_safe_mod_compare (Lisp_Object cons)
|
|
|
3462 {
|
|
|
3463 return (event_matches_key_specifier_p (XEVENT (XCAR (cons)), XCDR (cons))
|
|
|
3464 ? Qt
|
|
|
3465 : Qnil);
|
|
|
3466 }
|
|
|
3467
|
|
|
3468 static Lisp_Object
|
|
|
3469 command_builder_find_menu_accelerator (struct command_builder *builder)
|
|
|
3470 {
|
|
|
3471 /* this function can GC */
|
|
|
3472 Lisp_Object event0 = builder->current_events;
|
|
|
3473 struct console *con = XCONSOLE (Vselected_console);
|
|
|
3474 struct frame *f = XFRAME (CONSOLE_SELECTED_FRAME (con));
|
|
|
3475 Widget menubar_widget;
|
|
|
3476
|
|
|
3477 /* compare entries in event0 against the menu prefix */
|
|
|
3478
|
|
|
3479 if ((!CONSOLE_X_P (XCONSOLE (builder->console))) || NILP (event0) ||
|
|
|
3480 XEVENT (event0)->event_type != key_press_event)
|
|
|
3481 return Qnil;
|
|
|
3482
|
|
|
3483 if (!NILP (Vmenu_accelerator_prefix))
|
|
|
3484 {
|
|
|
3485 event0 = condition_case_1 (Qerror,
|
|
|
3486 menu_accelerator_safe_compare,
|
|
|
3487 event0,
|
|
|
3488 menu_accelerator_junk_on_error,
|
|
|
3489 Qnil);
|
|
|
3490 }
|
|
|
3491
|
|
|
3492 if (NILP (event0))
|
|
|
3493 return Qnil;
|
|
|
3494
|
|
|
3495 menubar_widget = FRAME_X_MENUBAR_WIDGET (f);
|
|
|
3496 if (menubar_widget
|
|
|
3497 && CONSP (Vmenu_accelerator_modifiers))
|
|
|
3498 {
|
|
|
3499 Lisp_Object fake;
|
|
|
3500 Lisp_Object last = Qnil;
|
|
|
3501 struct gcpro gcpro1;
|
|
|
3502 Lisp_Object matchp;
|
|
|
3503
|
|
|
3504 widget_value *val;
|
|
|
3505 LWLIB_ID id = XPOPUP_DATA (f->menubar_data)->id;
|
|
|
3506
|
|
|
3507 val = lw_get_all_values (id);
|
|
|
3508 if (val)
|
|
|
3509 {
|
|
|
3510 val = val->contents;
|
|
|
3511
|
|
|
3512 fake = Fcopy_sequence (Vmenu_accelerator_modifiers);
|
|
|
3513 last = fake;
|
|
|
3514
|
|
|
3515 while (!NILP (Fcdr (last)))
|
|
|
3516 last = Fcdr (last);
|
|
|
3517
|
|
|
3518 Fsetcdr (last, Fcons (Qnil, Qnil));
|
|
|
3519 last = Fcdr (last);
|
|
|
3520 }
|
|
|
3521
|
|
|
3522 fake = Fcons (Qnil, fake);
|
|
|
3523
|
|
|
3524 GCPRO1 (fake);
|
|
|
3525
|
|
|
3526 while (val)
|
|
|
3527 {
|
|
|
3528 Lisp_Object accel;
|
|
|
3529 VOID_TO_LISP (accel, val->accel);
|
|
|
3530 if (val->name && !NILP (accel))
|
|
|
3531 {
|
|
|
3532 Fsetcar (last, accel);
|
|
|
3533 Fsetcar (fake, event0);
|
|
|
3534 matchp = condition_case_1 (Qerror,
|
|
|
3535 menu_accelerator_safe_mod_compare,
|
|
|
3536 fake,
|
|
|
3537 menu_accelerator_junk_on_error,
|
|
|
3538 Qnil);
|
|
|
3539 if (!NILP (matchp))
|
|
|
3540 {
|
|
|
3541 /* we found one! */
|
|
|
3542
|
|
|
3543 lw_set_menu (menubar_widget, val);
|
|
|
3544 /* yah - yet another hack.
|
|
|
3545 pretend emacs timestamp is the same as an X timestamp,
|
|
|
3546 which for the moment it is. (read events.h)
|
|
|
3547 */
|
|
|
3548 lw_map_menu (XEVENT (event0)->timestamp);
|
|
|
3549
|
|
|
3550 if (val->contents)
|
|
|
3551 lw_push_menu (val->contents);
|
|
|
3552
|
|
|
3553 lw_display_menu (CurrentTime);
|
|
|
3554
|
|
|
3555 /* menu accelerator keys don't go into keyboard macros */
|
|
|
3556 if (!NILP (con->defining_kbd_macro) && NILP (Vexecuting_macro))
|
|
|
3557 con->kbd_macro_ptr = con->kbd_macro_end;
|
|
|
3558
|
|
|
3559 /* don't echo menu accelerator keys */
|
|
|
3560 /*reset_key_echo (builder, 1);*/
|
|
|
3561 reset_this_command_keys (Vselected_console, 1);
|
|
|
3562 UNGCPRO;
|
|
|
3563
|
|
|
3564 return Vmenu_accelerator_map;
|
|
|
3565 }
|
|
|
3566 }
|
|
|
3567
|
|
|
3568 val = val->next;
|
|
|
3569 }
|
|
|
3570
|
|
|
3571 UNGCPRO;
|
|
|
3572 }
|
|
|
3573 return Qnil;
|
|
|
3574 }
|
|
|
3575
|
|
|
3576
|
|
|
3577 DEFUN ("accelerate-menu", Faccelerate_menu, 0, 0, "_", /*
|
|
|
3578 Make the menubar active. Menu items can be selected using menu accelerators
|
|
|
3579 or by actions defined in menu-accelerator-map.
|
|
|
3580 */
|
|
|
3581 ())
|
|
|
3582 {
|
|
|
3583 struct console *con = XCONSOLE (Vselected_console);
|
|
|
3584 struct frame *f = XFRAME (CONSOLE_SELECTED_FRAME (con));
|
|
|
3585 LWLIB_ID id;
|
|
|
3586 widget_value *val;
|
|
|
3587
|
|
|
3588 if (NILP (f->menubar_data))
|
|
|
3589 error ("Frame has no menubar.");
|
|
|
3590
|
|
|
3591 id = XPOPUP_DATA (f->menubar_data)->id;
|
|
|
3592 val = lw_get_all_values (id);
|
|
|
3593 val = val->contents;
|
|
|
3594 lw_set_menu (FRAME_X_MENUBAR_WIDGET (f), val);
|
|
|
3595 lw_map_menu (CurrentTime);
|
|
|
3596
|
|
|
3597 lw_display_menu (CurrentTime);
|
|
|
3598
|
|
|
3599 /* menu accelerator keys don't go into keyboard macros */
|
|
|
3600 if (!NILP (con->defining_kbd_macro) && NILP (Vexecuting_macro))
|
|
|
3601 con->kbd_macro_ptr = con->kbd_macro_end;
|
|
|
3602
|
|
|
3603 return Qnil;
|
|
|
3604 }
|
|
|
3605 #endif /* HAVE_X_WINDOWS && HAVE_MENUBARS */
|
|
|
3606
|
|
0
|
3607 /* See if we can do function-key-map or key-translation-map translation
|
|
|
3608 on the current events in the command builder. If so, do this, and
|
|
|
3609 return the resulting binding, if any. */
|
|
|
3610
|
|
|
3611 static Lisp_Object
|
|
|
3612 munge_keymap_translate (struct command_builder *builder,
|
|
|
3613 enum munge_me_out_the_door munge,
|
|
|
3614 int has_normal_binding_p)
|
|
|
3615 {
|
|
|
3616 Lisp_Object suffix;
|
|
173
|
3617
|
|
0
|
3618 EVENT_CHAIN_LOOP (suffix, builder->munge_me[munge].first_mungeable_event)
|
|
|
3619 {
|
|
|
3620 Lisp_Object result = munging_key_map_event_binding (suffix, munge);
|
|
173
|
3621
|
|
185
|
3622 if (NILP (result))
|
|
|
3623 continue;
|
|
|
3624
|
|
|
3625 if (KEYMAPP (result))
|
|
|
3626 {
|
|
|
3627 if (NILP (builder->last_non_munged_event)
|
|
|
3628 && !has_normal_binding_p)
|
|
|
3629 builder->last_non_munged_event = builder->most_current_event;
|
|
|
3630 }
|
|
|
3631 else
|
|
|
3632 builder->last_non_munged_event = Qnil;
|
|
|
3633
|
|
|
3634 if (!KEYMAPP (result) &&
|
|
|
3635 !VECTORP (result) &&
|
|
|
3636 !STRINGP (result))
|
|
0
|
3637 {
|
|
185
|
3638 struct gcpro gcpro1;
|
|
|
3639 GCPRO1 (suffix);
|
|
|
3640 result = call1 (result, Qnil);
|
|
|
3641 UNGCPRO;
|
|
|
3642 if (NILP (result))
|
|
|
3643 return Qnil;
|
|
|
3644 }
|
|
|
3645
|
|
|
3646 if (KEYMAPP (result))
|
|
|
3647 return result;
|
|
|
3648
|
|
|
3649 if (VECTORP (result) || STRINGP (result))
|
|
|
3650 {
|
|
|
3651 Lisp_Object new_chain = key_sequence_to_event_chain (result);
|
|
|
3652 Lisp_Object tempev;
|
|
|
3653 int n, tckn;
|
|
|
3654
|
|
|
3655 /* If the first_mungeable_event of the other munger is
|
|
|
3656 within the events we're munging, then it will point to
|
|
|
3657 deallocated events afterwards, which is bad -- so make it
|
|
|
3658 point at the beginning of the munged events. */
|
|
|
3659 EVENT_CHAIN_LOOP (tempev, suffix)
|
|
0
|
3660 {
|
|
185
|
3661 Lisp_Object *mungeable_event =
|
|
|
3662 &builder->munge_me[1 - munge].first_mungeable_event;
|
|
|
3663 if (EQ (tempev, *mungeable_event))
|
|
0
|
3664 {
|
|
185
|
3665 *mungeable_event = new_chain;
|
|
|
3666 break;
|
|
0
|
3667 }
|
|
|
3668 }
|
|
|
3669
|
|
185
|
3670 n = event_chain_count (suffix);
|
|
|
3671 command_builder_replace_suffix (builder, suffix, new_chain);
|
|
|
3672 builder->munge_me[munge].first_mungeable_event = Qnil;
|
|
|
3673 /* Now hork this-command-keys as well. */
|
|
|
3674
|
|
|
3675 /* We just assume that the events we just replaced are
|
|
|
3676 sitting in copied form at the end of this-command-keys.
|
|
|
3677 If the user did weird things with `dispatch-event' this
|
|
|
3678 may not be the case, but at least we make sure we won't
|
|
|
3679 crash. */
|
|
|
3680 new_chain = copy_event_chain (new_chain);
|
|
|
3681 tckn = event_chain_count (Vthis_command_keys);
|
|
|
3682 if (tckn >= n)
|
|
|
3683 {
|
|
|
3684 this_command_keys_replace_suffix
|
|
|
3685 (event_chain_nth (Vthis_command_keys, tckn - n),
|
|
|
3686 new_chain);
|
|
|
3687 }
|
|
|
3688
|
|
|
3689 result = command_builder_find_leaf_1 (builder);
|
|
|
3690 return result;
|
|
0
|
3691 }
|
|
185
|
3692
|
|
|
3693 signal_simple_error ((munge == MUNGE_ME_FUNCTION_KEY ?
|
|
|
3694 "Invalid binding in function-key-map" :
|
|
|
3695 "Invalid binding in key-translation-map"),
|
|
|
3696 result);
|
|
0
|
3697 }
|
|
|
3698
|
|
|
3699 return Qnil;
|
|
|
3700 }
|
|
|
3701
|
|
|
3702 /* Compare the current state of the command builder against the local and
|
|
|
3703 global keymaps, and return the binding. If there is no match, try again,
|
|
2
|
3704 case-insensitively. The return value will be one of:
|
|
0
|
3705 -- nil (there is no binding)
|
|
|
3706 -- a keymap (part of a command has been specified)
|
|
|
3707 -- a command (anything that satisfies `commandp'; this includes
|
|
|
3708 some symbols, lists, subrs, strings, vectors, and
|
|
|
3709 compiled-function objects)
|
|
|
3710 */
|
|
|
3711 static Lisp_Object
|
|
|
3712 command_builder_find_leaf (struct command_builder *builder,
|
|
|
3713 int allow_misc_user_events_p)
|
|
|
3714 {
|
|
|
3715 /* This function can GC */
|
|
|
3716 Lisp_Object result;
|
|
|
3717 Lisp_Object evee = builder->current_events;
|
|
|
3718
|
|
185
|
3719 if (XEVENT_TYPE (evee) == misc_user_event)
|
|
0
|
3720 {
|
|
185
|
3721 if (allow_misc_user_events_p && (NILP (XEVENT_NEXT (evee))))
|
|
|
3722 return list2 (XEVENT (evee)->event.eval.function,
|
|
|
3723 XEVENT (evee)->event.eval.object);
|
|
|
3724 else
|
|
|
3725 return Qnil;
|
|
0
|
3726 }
|
|
|
3727
|
|
412
|
3728 /* if we're currently in a menu accelerator, check there for further events */
|
|
221
|
3729 #if defined(HAVE_X_WINDOWS) && defined(LWLIB_MENUBARS_LUCID)
|
|
412
|
3730 if (lw_menu_active)
|
|
175
|
3731 {
|
|
185
|
3732 return command_builder_operate_menu_accelerator (builder);
|
|
175
|
3733 }
|
|
|
3734 else
|
|
|
3735 {
|
|
185
|
3736 result = Qnil;
|
|
175
|
3737 if (EQ (Vmenu_accelerator_enabled, Qmenu_force))
|
|
|
3738 result = command_builder_find_menu_accelerator (builder);
|
|
|
3739 if (NILP (result))
|
|
|
3740 #endif
|
|
|
3741 result = command_builder_find_leaf_1 (builder);
|
|
221
|
3742 #if defined(HAVE_X_WINDOWS) && defined(LWLIB_MENUBARS_LUCID)
|
|
175
|
3743 if (NILP (result)
|
|
|
3744 && EQ (Vmenu_accelerator_enabled, Qmenu_fallback))
|
|
|
3745 result = command_builder_find_menu_accelerator (builder);
|
|
|
3746 }
|
|
|
3747 #endif
|
|
0
|
3748
|
|
|
3749 /* Check to see if we have a potential function-key-map match. */
|
|
|
3750 if (NILP (result))
|
|
|
3751 {
|
|
|
3752 result = munge_keymap_translate (builder, MUNGE_ME_FUNCTION_KEY, 0);
|
|
|
3753 regenerate_echo_keys_from_this_command_keys (builder);
|
|
|
3754 }
|
|
|
3755 /* Check to see if we have a potential key-translation-map match. */
|
|
|
3756 {
|
|
|
3757 Lisp_Object key_translate_result =
|
|
|
3758 munge_keymap_translate (builder, MUNGE_ME_KEY_TRANSLATION,
|
|
|
3759 !NILP (result));
|
|
|
3760 if (!NILP (key_translate_result))
|
|
|
3761 {
|
|
|
3762 result = key_translate_result;
|
|
|
3763 regenerate_echo_keys_from_this_command_keys (builder);
|
|
|
3764 }
|
|
|
3765 }
|
|
|
3766
|
|
|
3767 if (!NILP (result))
|
|
|
3768 return result;
|
|
|
3769
|
|
|
3770 /* If key-sequence wasn't bound, we'll try some fallbacks. */
|
|
|
3771
|
|
|
3772 /* If we didn't find a binding, and the last event in the sequence is
|
|
|
3773 a shifted character, then try again with the lowercase version. */
|
|
|
3774
|
|
2
|
3775 if (XEVENT_TYPE (builder->most_current_event) == key_press_event
|
|
|
3776 && !NILP (Vretry_undefined_key_binding_unshifted))
|
|
|
3777 {
|
|
|
3778 Lisp_Object terminal = builder->most_current_event;
|
|
|
3779 struct key_data* key = & XEVENT (terminal)->event.key;
|
|
173
|
3780 Emchar c = 0;
|
|
412
|
3781 if ((key->modifiers & MOD_SHIFT)
|
|
2
|
3782 || (CHAR_OR_CHAR_INTP (key->keysym)
|
|
|
3783 && ((c = XCHAR_OR_CHAR_INT (key->keysym)), c >= 'A' && c <= 'Z')))
|
|
|
3784 {
|
|
412
|
3785 struct Lisp_Event terminal_copy = *XEVENT (terminal);
|
|
|
3786
|
|
|
3787 if (key->modifiers & MOD_SHIFT)
|
|
|
3788 key->modifiers &= (~ MOD_SHIFT);
|
|
2
|
3789 else
|
|
|
3790 key->keysym = make_char (c + 'a' - 'A');
|
|
|
3791
|
|
|
3792 result = command_builder_find_leaf (builder, allow_misc_user_events_p);
|
|
|
3793 if (!NILP (result))
|
|
169
|
3794 return result;
|
|
2
|
3795 /* If there was no match with the lower-case version either,
|
|
|
3796 then put back the upper-case event for the error
|
|
|
3797 message. But make sure that function-key-map didn't
|
|
|
3798 change things out from under us. */
|
|
|
3799 if (EQ (terminal, builder->most_current_event))
|
|
|
3800 *XEVENT (terminal) = terminal_copy;
|
|
|
3801 }
|
|
|
3802 }
|
|
|
3803
|
|
|
3804 /* help-char is `auto-bound' in every keymap */
|
|
0
|
3805 if (!NILP (Vprefix_help_command) &&
|
|
|
3806 event_matches_key_specifier_p (XEVENT (builder->most_current_event),
|
|
|
3807 Vhelp_char))
|
|
173
|
3808 return Vprefix_help_command;
|
|
0
|
3809
|
|
70
|
3810 #ifdef HAVE_XIM
|
|
|
3811 /* If keysym is a non-ASCII char, bind it to self-insert-char by default. */
|
|
|
3812 if (XEVENT_TYPE (builder->most_current_event) == key_press_event
|
|
|
3813 && !NILP (Vcomposed_character_default_binding))
|
|
|
3814 {
|
|
|
3815 Lisp_Object keysym = XEVENT (builder->most_current_event)->event.key.keysym;
|
|
|
3816 if (CHARP (keysym) && !CHAR_ASCII_P (XCHAR (keysym)))
|
|
|
3817 return Vcomposed_character_default_binding;
|
|
|
3818 }
|
|
|
3819 #endif /* HAVE_XIM */
|
|
173
|
3820
|
|
0
|
3821 /* If we read extra events attempting to match a function key but end
|
|
|
3822 up failing, then we release those events back to the command loop
|
|
|
3823 and fail on the original lookup. The released events will then be
|
|
|
3824 reprocessed in the context of the first part having failed. */
|
|
|
3825 if (!NILP (builder->last_non_munged_event))
|
|
|
3826 {
|
|
|
3827 Lisp_Object event0 = builder->last_non_munged_event;
|
|
173
|
3828
|
|
0
|
3829 /* Put the commands back on the event queue. */
|
|
|
3830 enqueue_event_chain (XEVENT_NEXT (event0),
|
|
|
3831 &command_event_queue,
|
|
|
3832 &command_event_queue_tail);
|
|
173
|
3833
|
|
0
|
3834 /* Then remove them from the command builder. */
|
|
|
3835 XSET_EVENT_NEXT (event0, Qnil);
|
|
|
3836 builder->most_current_event = event0;
|
|
|
3837 builder->last_non_munged_event = Qnil;
|
|
|
3838 }
|
|
|
3839
|
|
|
3840 return Qnil;
|
|
|
3841 }
|
|
|
3842
|
|
|
3843
|
|
|
3844 /* Every time a command-event (a key, button, or menu selection) is read by
|
|
|
3845 Fnext_event(), it is stored in the recent_keys_ring, in Vlast_input_event,
|
|
|
3846 and in Vthis_command_keys. (Eval-events are not stored there.)
|
|
|
3847
|
|
|
3848 Every time a command is invoked, Vlast_command_event is set to the last
|
|
|
3849 event in the sequence.
|
|
|
3850
|
|
|
3851 This means that Vthis_command_keys is really about "input read since the
|
|
|
3852 last command was executed" rather than about "what keys invoked this
|
|
173
|
3853 command." This is a little counterintuitive, but that's the way it
|
|
0
|
3854 has always worked.
|
|
|
3855
|
|
|
3856 As an extra kink, the function read-key-sequence resets/updates the
|
|
|
3857 last-command-event and this-command-keys. It doesn't append to the
|
|
|
3858 command-keys as read-char does. Such are the pitfalls of having to
|
|
|
3859 maintain compatibility with a program for which the only specification
|
|
|
3860 is the code itself.
|
|
|
3861
|
|
|
3862 (We could implement recent_keys_ring and Vthis_command_keys as the same
|
|
|
3863 data structure.)
|
|
|
3864 */
|
|
|
3865
|
|
153
|
3866 DEFUN ("recent-keys", Frecent_keys, 0, 1, 0, /*
|
|
|
3867 Return a vector of recent keyboard or mouse button events read.
|
|
|
3868 If NUMBER is non-nil, not more than NUMBER events will be returned.
|
|
290
|
3869 Change number of events stored using `set-recent-keys-ring-size'.
|
|
153
|
3870
|
|
0
|
3871 This copies the event objects into a new vector; it is safe to keep and
|
|
|
3872 modify them.
|
|
20
|
3873 */
|
|
153
|
3874 (number))
|
|
0
|
3875 {
|
|
|
3876 struct gcpro gcpro1;
|
|
|
3877 Lisp_Object val = Qnil;
|
|
153
|
3878 int nwanted;
|
|
0
|
3879 int start, nkeys, i, j;
|
|
371
|
3880 GCPRO1 (val);
|
|
0
|
3881
|
|
153
|
3882 if (NILP (number))
|
|
|
3883 nwanted = recent_keys_ring_size;
|
|
|
3884 else
|
|
|
3885 {
|
|
|
3886 CHECK_NATNUM (number);
|
|
|
3887 nwanted = XINT (number);
|
|
|
3888 }
|
|
|
3889
|
|
|
3890 /* Create the keys ring vector, if none present. */
|
|
|
3891 if (NILP (Vrecent_keys_ring))
|
|
|
3892 {
|
|
|
3893 Vrecent_keys_ring = make_vector (recent_keys_ring_size, Qnil);
|
|
|
3894 /* And return nothing in particular. */
|
|
|
3895 return make_vector (0, Qnil);
|
|
|
3896 }
|
|
|
3897
|
|
173
|
3898 if (NILP (XVECTOR_DATA (Vrecent_keys_ring)[recent_keys_ring_index]))
|
|
0
|
3899 /* This means the vector has not yet wrapped */
|
|
|
3900 {
|
|
|
3901 nkeys = recent_keys_ring_index;
|
|
|
3902 start = 0;
|
|
|
3903 }
|
|
|
3904 else
|
|
|
3905 {
|
|
153
|
3906 nkeys = recent_keys_ring_size;
|
|
|
3907 start = ((recent_keys_ring_index == nkeys) ? 0 : recent_keys_ring_index);
|
|
0
|
3908 }
|
|
|
3909
|
|
153
|
3910 if (nwanted < nkeys)
|
|
|
3911 {
|
|
|
3912 start += nkeys - nwanted;
|
|
|
3913 if (start >= recent_keys_ring_size)
|
|
|
3914 start -= recent_keys_ring_size;
|
|
|
3915 nkeys = nwanted;
|
|
|
3916 }
|
|
|
3917 else
|
|
|
3918 nwanted = nkeys;
|
|
|
3919
|
|
|
3920 val = make_vector (nwanted, Qnil);
|
|
0
|
3921
|
|
|
3922 for (i = 0, j = start; i < nkeys; i++)
|
|
|
3923 {
|
|
173
|
3924 Lisp_Object e = XVECTOR_DATA (Vrecent_keys_ring)[j];
|
|
0
|
3925
|
|
|
3926 if (NILP (e))
|
|
|
3927 abort ();
|
|
173
|
3928 XVECTOR_DATA (val)[i] = Fcopy_event (e, Qnil);
|
|
153
|
3929 if (++j >= recent_keys_ring_size)
|
|
0
|
3930 j = 0;
|
|
|
3931 }
|
|
|
3932 UNGCPRO;
|
|
173
|
3933 return val;
|
|
0
|
3934 }
|
|
|
3935
|
|
153
|
3936
|
|
|
3937 DEFUN ("recent-keys-ring-size", Frecent_keys_ring_size, 0, 0, 0, /*
|
|
|
3938 The maximum number of events `recent-keys' can return.
|
|
|
3939 */
|
|
|
3940 ())
|
|
|
3941 {
|
|
|
3942 return make_int (recent_keys_ring_size);
|
|
|
3943 }
|
|
|
3944
|
|
|
3945 DEFUN ("set-recent-keys-ring-size", Fset_recent_keys_ring_size, 1, 1, 0, /*
|
|
|
3946 Set the maximum number of events to be stored internally.
|
|
|
3947 */
|
|
|
3948 (size))
|
|
|
3949 {
|
|
|
3950 Lisp_Object new_vector = Qnil;
|
|
|
3951 int i, j, nkeys, start, min;
|
|
|
3952 struct gcpro gcpro1;
|
|
371
|
3953 GCPRO1 (new_vector);
|
|
153
|
3954
|
|
|
3955 CHECK_INT (size);
|
|
|
3956 if (XINT (size) <= 0)
|
|
|
3957 error ("Recent keys ring size must be positive");
|
|
|
3958 if (XINT (size) == recent_keys_ring_size)
|
|
|
3959 return size;
|
|
|
3960
|
|
|
3961 new_vector = make_vector (XINT (size), Qnil);
|
|
|
3962
|
|
|
3963 if (NILP (Vrecent_keys_ring))
|
|
|
3964 {
|
|
|
3965 Vrecent_keys_ring = new_vector;
|
|
|
3966 return size;
|
|
|
3967 }
|
|
|
3968
|
|
173
|
3969 if (NILP (XVECTOR_DATA (Vrecent_keys_ring)[recent_keys_ring_index]))
|
|
153
|
3970 /* This means the vector has not yet wrapped */
|
|
|
3971 {
|
|
|
3972 nkeys = recent_keys_ring_index;
|
|
|
3973 start = 0;
|
|
|
3974 }
|
|
|
3975 else
|
|
|
3976 {
|
|
|
3977 nkeys = recent_keys_ring_size;
|
|
|
3978 start = ((recent_keys_ring_index == nkeys) ? 0 : recent_keys_ring_index);
|
|
|
3979 }
|
|
|
3980
|
|
|
3981 if (XINT (size) > nkeys)
|
|
|
3982 min = nkeys;
|
|
|
3983 else
|
|
|
3984 min = XINT (size);
|
|
|
3985
|
|
|
3986 for (i = 0, j = start; i < min; i++)
|
|
|
3987 {
|
|
173
|
3988 XVECTOR_DATA (new_vector)[i] = XVECTOR_DATA (Vrecent_keys_ring)[j];
|
|
153
|
3989 if (++j >= recent_keys_ring_size)
|
|
|
3990 j = 0;
|
|
|
3991 }
|
|
|
3992 recent_keys_ring_size = XINT (size);
|
|
|
3993 recent_keys_ring_index = (i < recent_keys_ring_size) ? i : 0;
|
|
|
3994
|
|
|
3995 Vrecent_keys_ring = new_vector;
|
|
|
3996
|
|
|
3997 UNGCPRO;
|
|
|
3998 return size;
|
|
|
3999 }
|
|
|
4000
|
|
0
|
4001 /* Vthis_command_keys having value Qnil means that the next time
|
|
|
4002 push_this_command_keys is called, it should start over.
|
|
2
|
4003 The times at which the command-keys are reset
|
|
380
|
4004 (instead of merely being augmented) are pretty counterintuitive.
|
|
0
|
4005 (More specifically:
|
|
|
4006
|
|
|
4007 -- We do not reset this-command-keys when we finish reading a
|
|
|
4008 command. This is because some commands (e.g. C-u) act
|
|
|
4009 like command prefixes; they signal this by setting prefix-arg
|
|
|
4010 to non-nil.
|
|
|
4011 -- Therefore, we reset this-command-keys when we finish
|
|
110
|
4012 executing a command, unless prefix-arg is set.
|
|
0
|
4013 -- However, if we ever do a non-local exit out of a command
|
|
|
4014 loop (e.g. an error in a command), we need to reset
|
|
|
4015 this-command-keys. We do this by calling reset_this_command_keys()
|
|
|
4016 from cmdloop.c, whenever an error causes an invocation of the
|
|
|
4017 default error handler, and whenever there's a throw to top-level.)
|
|
|
4018 */
|
|
|
4019
|
|
|
4020 void
|
|
|
4021 reset_this_command_keys (Lisp_Object console, int clear_echo_area_p)
|
|
|
4022 {
|
|
|
4023 struct command_builder *command_builder =
|
|
|
4024 XCOMMAND_BUILDER (XCONSOLE (console)->command_builder);
|
|
|
4025
|
|
|
4026 reset_key_echo (command_builder, clear_echo_area_p);
|
|
|
4027
|
|
|
4028 deallocate_event_chain (Vthis_command_keys);
|
|
|
4029 Vthis_command_keys = Qnil;
|
|
|
4030 Vthis_command_keys_tail = Qnil;
|
|
|
4031
|
|
|
4032 reset_current_events (command_builder);
|
|
|
4033 }
|
|
|
4034
|
|
|
4035 static void
|
|
|
4036 push_this_command_keys (Lisp_Object event)
|
|
|
4037 {
|
|
189
|
4038 Lisp_Object new = Fmake_event (Qnil, Qnil);
|
|
0
|
4039
|
|
|
4040 Fcopy_event (event, new);
|
|
|
4041 enqueue_event (new, &Vthis_command_keys, &Vthis_command_keys_tail);
|
|
|
4042 }
|
|
|
4043
|
|
|
4044 /* The following two functions are used in call-interactively,
|
|
|
4045 for the @ and e specifications. We used to just use
|
|
110
|
4046 `current-mouse-event' (i.e. the last mouse event in this-command-keys),
|
|
0
|
4047 but FSF does it more generally so we follow their lead. */
|
|
|
4048
|
|
|
4049 Lisp_Object
|
|
|
4050 extract_this_command_keys_nth_mouse_event (int n)
|
|
|
4051 {
|
|
|
4052 Lisp_Object event;
|
|
|
4053
|
|
|
4054 EVENT_CHAIN_LOOP (event, Vthis_command_keys)
|
|
|
4055 {
|
|
|
4056 if (EVENTP (event)
|
|
|
4057 && (XEVENT_TYPE (event) == button_press_event
|
|
|
4058 || XEVENT_TYPE (event) == button_release_event
|
|
|
4059 || XEVENT_TYPE (event) == misc_user_event))
|
|
|
4060 {
|
|
|
4061 if (!n)
|
|
|
4062 {
|
|
|
4063 /* must copy to avoid an abort() in next_event_internal() */
|
|
|
4064 if (!NILP (XEVENT_NEXT (event)))
|
|
|
4065 return Fcopy_event (event, Qnil);
|
|
|
4066 else
|
|
|
4067 return event;
|
|
|
4068 }
|
|
|
4069 n--;
|
|
|
4070 }
|
|
|
4071 }
|
|
|
4072
|
|
|
4073 return Qnil;
|
|
|
4074 }
|
|
|
4075
|
|
|
4076 Lisp_Object
|
|
|
4077 extract_vector_nth_mouse_event (Lisp_Object vector, int n)
|
|
|
4078 {
|
|
|
4079 int i;
|
|
173
|
4080 int len = XVECTOR_LENGTH (vector);
|
|
|
4081
|
|
|
4082 for (i = 0; i < len; i++)
|
|
0
|
4083 {
|
|
173
|
4084 Lisp_Object event = XVECTOR_DATA (vector)[i];
|
|
|
4085 if (EVENTP (event))
|
|
|
4086 switch (XEVENT_TYPE (event))
|
|
|
4087 {
|
|
|
4088 case button_press_event :
|
|
|
4089 case button_release_event :
|
|
|
4090 case misc_user_event :
|
|
|
4091 if (n == 0)
|
|
|
4092 return event;
|
|
|
4093 n--;
|
|
|
4094 break;
|
|
|
4095 default:
|
|
|
4096 continue;
|
|
|
4097 }
|
|
0
|
4098 }
|
|
|
4099
|
|
|
4100 return Qnil;
|
|
|
4101 }
|
|
|
4102
|
|
|
4103 static void
|
|
|
4104 push_recent_keys (Lisp_Object event)
|
|
|
4105 {
|
|
153
|
4106 Lisp_Object e;
|
|
|
4107
|
|
|
4108 if (NILP (Vrecent_keys_ring))
|
|
|
4109 Vrecent_keys_ring = make_vector (recent_keys_ring_size, Qnil);
|
|
|
4110
|
|
173
|
4111 e = XVECTOR_DATA (Vrecent_keys_ring) [recent_keys_ring_index];
|
|
0
|
4112
|
|
|
4113 if (NILP (e))
|
|
|
4114 {
|
|
189
|
4115 e = Fmake_event (Qnil, Qnil);
|
|
173
|
4116 XVECTOR_DATA (Vrecent_keys_ring) [recent_keys_ring_index] = e;
|
|
0
|
4117 }
|
|
|
4118 Fcopy_event (event, e);
|
|
153
|
4119 if (++recent_keys_ring_index == recent_keys_ring_size)
|
|
0
|
4120 recent_keys_ring_index = 0;
|
|
|
4121 }
|
|
|
4122
|
|
|
4123
|
|
|
4124 static Lisp_Object
|
|
|
4125 current_events_into_vector (struct command_builder *command_builder)
|
|
|
4126 {
|
|
|
4127 Lisp_Object vector;
|
|
|
4128 Lisp_Object event;
|
|
|
4129 int n = event_chain_count (command_builder->current_events);
|
|
|
4130
|
|
|
4131 /* Copy the vector and the events in it. */
|
|
|
4132 /* No need to copy the events, since they're already copies, and
|
|
|
4133 nobody other than the command-builder has pointers to them */
|
|
|
4134 vector = make_vector (n, Qnil);
|
|
|
4135 n = 0;
|
|
|
4136 EVENT_CHAIN_LOOP (event, command_builder->current_events)
|
|
173
|
4137 XVECTOR_DATA (vector)[n++] = event;
|
|
0
|
4138 reset_command_builder_event_chain (command_builder);
|
|
173
|
4139 return vector;
|
|
0
|
4140 }
|
|
|
4141
|
|
|
4142
|
|
|
4143 /*
|
|
|
4144 Given the current state of the command builder and a new command event
|
|
|
4145 that has just been dispatched:
|
|
|
4146
|
|
|
4147 -- add the event to the event chain forming the current command
|
|
|
4148 (doing meta-translation as necessary)
|
|
2
|
4149 -- return the binding of this event chain; this will be one of:
|
|
0
|
4150 -- nil (there is no binding)
|
|
|
4151 -- a keymap (part of a command has been specified)
|
|
|
4152 -- a command (anything that satisfies `commandp'; this includes
|
|
|
4153 some symbols, lists, subrs, strings, vectors, and
|
|
|
4154 compiled-function objects)
|
|
|
4155 */
|
|
|
4156 static Lisp_Object
|
|
|
4157 lookup_command_event (struct command_builder *command_builder,
|
|
|
4158 Lisp_Object event, int allow_misc_user_events_p)
|
|
|
4159 {
|
|
|
4160 /* This function can GC */
|
|
|
4161 struct frame *f = selected_frame ();
|
|
|
4162 /* Clear output from previous command execution */
|
|
|
4163 if (!EQ (Qcommand, echo_area_status (f))
|
|
|
4164 /* but don't let mouse-up clear what mouse-down just printed */
|
|
|
4165 && (XEVENT (event)->event_type != button_release_event))
|
|
|
4166 clear_echo_area (f, Qnil, 0);
|
|
|
4167
|
|
|
4168 /* Add the given event to the command builder.
|
|
|
4169 Extra hack: this also updates the recent_keys_ring and Vthis_command_keys
|
|
|
4170 vectors to translate "ESC x" to "M-x" (for any "x" of course).
|
|
|
4171 */
|
|
|
4172 {
|
|
|
4173 Lisp_Object recent = command_builder->most_current_event;
|
|
|
4174
|
|
|
4175 if (EVENTP (recent)
|
|
|
4176 && event_matches_key_specifier_p (XEVENT (recent), Vmeta_prefix_char))
|
|
|
4177 {
|
|
412
|
4178 struct Lisp_Event *e;
|
|
0
|
4179 /* When we see a sequence like "ESC x", pretend we really saw "M-x".
|
|
|
4180 DoubleThink the recent-keys and this-command-keys as well. */
|
|
|
4181
|
|
|
4182 /* Modify the previous most-recently-pushed event on the command
|
|
|
4183 builder to be a copy of this one with the meta-bit set instead of
|
|
|
4184 pushing a new event.
|
|
|
4185 */
|
|
|
4186 Fcopy_event (event, recent);
|
|
|
4187 e = XEVENT (recent);
|
|
|
4188 if (e->event_type == key_press_event)
|
|
412
|
4189 e->event.key.modifiers |= MOD_META;
|
|
173
|
4190 else if (e->event_type == button_press_event
|
|
0
|
4191 || e->event_type == button_release_event)
|
|
412
|
4192 e->event.button.modifiers |= MOD_META;
|
|
0
|
4193 else
|
|
|
4194 abort ();
|
|
|
4195
|
|
|
4196 {
|
|
|
4197 int tckn = event_chain_count (Vthis_command_keys);
|
|
|
4198 if (tckn >= 2)
|
|
|
4199 /* ??? very strange if it's < 2. */
|
|
|
4200 this_command_keys_replace_suffix
|
|
|
4201 (event_chain_nth (Vthis_command_keys, tckn - 2),
|
|
|
4202 Fcopy_event (recent, Qnil));
|
|
|
4203 }
|
|
|
4204
|
|
|
4205 regenerate_echo_keys_from_this_command_keys (command_builder);
|
|
|
4206 }
|
|
|
4207 else
|
|
|
4208 {
|
|
189
|
4209 event = Fcopy_event (event, Fmake_event (Qnil, Qnil));
|
|
0
|
4210
|
|
|
4211 command_builder_append_event (command_builder, event);
|
|
|
4212 }
|
|
|
4213 }
|
|
|
4214
|
|
|
4215 {
|
|
|
4216 Lisp_Object leaf = command_builder_find_leaf (command_builder,
|
|
|
4217 allow_misc_user_events_p);
|
|
|
4218 struct gcpro gcpro1;
|
|
|
4219 GCPRO1 (leaf);
|
|
|
4220
|
|
|
4221 if (KEYMAPP (leaf))
|
|
|
4222 {
|
|
412
|
4223 if (!lw_menu_active)
|
|
0
|
4224 {
|
|
175
|
4225 Lisp_Object prompt = Fkeymap_prompt (leaf, Qt);
|
|
|
4226 if (STRINGP (prompt))
|
|
0
|
4227 {
|
|
175
|
4228 /* Append keymap prompt to key echo buffer */
|
|
|
4229 int buf_index = command_builder->echo_buf_index;
|
|
|
4230 Bytecount len = XSTRING_LENGTH (prompt);
|
|
|
4231
|
|
|
4232 if (len + buf_index + 1 <= command_builder->echo_buf_length)
|
|
|
4233 {
|
|
|
4234 Bufbyte *echo = command_builder->echo_buf + buf_index;
|
|
|
4235 memcpy (echo, XSTRING_DATA (prompt), len);
|
|
|
4236 echo[len] = 0;
|
|
|
4237 }
|
|
|
4238 maybe_echo_keys (command_builder, 1);
|
|
0
|
4239 }
|
|
175
|
4240 else
|
|
|
4241 maybe_echo_keys (command_builder, 0);
|
|
0
|
4242 }
|
|
412
|
4243 else if (!NILP (Vquit_flag)) {
|
|
|
4244 Lisp_Object quit_event = Fmake_event(Qnil, Qnil);
|
|
|
4245 struct Lisp_Event *e = XEVENT (quit_event);
|
|
|
4246 /* if quit happened during menu acceleration, pretend we read it */
|
|
|
4247 struct console *con = XCONSOLE (Fselected_console ());
|
|
|
4248 int ch = CONSOLE_QUIT_CHAR (con);
|
|
|
4249
|
|
|
4250 character_to_event (ch, e, con, 1, 1);
|
|
|
4251 e->channel = make_console (con);
|
|
|
4252
|
|
|
4253 enqueue_command_event (quit_event);
|
|
|
4254 Vquit_flag = Qnil;
|
|
|
4255 }
|
|
0
|
4256 }
|
|
|
4257 else if (!NILP (leaf))
|
|
|
4258 {
|
|
|
4259 if (EQ (Qcommand, echo_area_status (f))
|
|
|
4260 && command_builder->echo_buf_index > 0)
|
|
|
4261 {
|
|
|
4262 /* If we had been echoing keys, echo the last one (without
|
|
|
4263 the trailing dash) and redisplay before executing the
|
|
|
4264 command. */
|
|
|
4265 command_builder->echo_buf[command_builder->echo_buf_index] = 0;
|
|
|
4266 maybe_echo_keys (command_builder, 1);
|
|
|
4267 Fsit_for (Qzero, Qt);
|
|
|
4268 }
|
|
|
4269 }
|
|
|
4270 RETURN_UNGCPRO (leaf);
|
|
|
4271 }
|
|
|
4272 }
|
|
|
4273
|
|
|
4274 static void
|
|
|
4275 execute_command_event (struct command_builder *command_builder,
|
|
|
4276 Lisp_Object event)
|
|
|
4277 {
|
|
|
4278 /* This function can GC */
|
|
|
4279 struct console *con = XCONSOLE (command_builder->console);
|
|
|
4280 struct gcpro gcpro1;
|
|
|
4281
|
|
|
4282 GCPRO1 (event); /* event may be freshly created */
|
|
|
4283 reset_current_events (command_builder);
|
|
|
4284
|
|
185
|
4285 switch (XEVENT (event)->event_type)
|
|
|
4286 {
|
|
|
4287 case key_press_event:
|
|
|
4288 Vcurrent_mouse_event = Qnil;
|
|
|
4289 break;
|
|
|
4290 case button_press_event:
|
|
|
4291 case button_release_event:
|
|
|
4292 case misc_user_event:
|
|
|
4293 Vcurrent_mouse_event = Fcopy_event (event, Qnil);
|
|
|
4294 break;
|
|
|
4295 default: break;
|
|
|
4296 }
|
|
|
4297
|
|
|
4298 /* Store the last-command-event. The semantics of this is that it
|
|
|
4299 is the last event most recently involved in command-lookup. */
|
|
0
|
4300 if (!EVENTP (Vlast_command_event))
|
|
189
|
4301 Vlast_command_event = Fmake_event (Qnil, Qnil);
|
|
0
|
4302 if (XEVENT (Vlast_command_event)->event_type == dead_event)
|
|
|
4303 {
|
|
189
|
4304 Vlast_command_event = Fmake_event (Qnil, Qnil);
|
|
0
|
4305 error ("Someone deallocated the last-command-event!");
|
|
|
4306 }
|
|
173
|
4307
|
|
0
|
4308 if (! EQ (event, Vlast_command_event))
|
|
|
4309 Fcopy_event (event, Vlast_command_event);
|
|
|
4310
|
|
|
4311 /* Note that last-command-char will never have its high-bit set, in
|
|
185
|
4312 an effort to sidestep the ambiguity between M-x and oslash. */
|
|
0
|
4313 Vlast_command_char = Fevent_to_character (Vlast_command_event,
|
|
|
4314 Qnil, Qnil, Qnil);
|
|
|
4315
|
|
|
4316 /* Actually call the command, with all sorts of hair to preserve or clear
|
|
|
4317 the echo-area and region as appropriate and call the pre- and post-
|
|
185
|
4318 command-hooks. */
|
|
0
|
4319 {
|
|
|
4320 int old_kbd_macro = con->kbd_macro_end;
|
|
185
|
4321 struct window *w = XWINDOW (Fselected_window (Qnil));
|
|
0
|
4322
|
|
2
|
4323 /* We're executing a new command, so the old value is irrelevant. */
|
|
0
|
4324 zmacs_region_stays = 0;
|
|
|
4325
|
|
|
4326 /* If the previous command tried to force a specific window-start,
|
|
|
4327 reset the flag in case this command moves point far away from
|
|
|
4328 that position. Also, reset the window's buffer's change
|
|
|
4329 information so that we don't trigger an incremental update. */
|
|
|
4330 if (w->force_start)
|
|
|
4331 {
|
|
|
4332 w->force_start = 0;
|
|
|
4333 buffer_reset_changes (XBUFFER (w->buffer));
|
|
|
4334 }
|
|
|
4335
|
|
|
4336 pre_command_hook ();
|
|
|
4337
|
|
|
4338 if (XEVENT (event)->event_type == misc_user_event)
|
|
|
4339 {
|
|
173
|
4340 call1 (XEVENT (event)->event.eval.function,
|
|
0
|
4341 XEVENT (event)->event.eval.object);
|
|
|
4342 }
|
|
|
4343 else
|
|
|
4344 {
|
|
|
4345 Fcommand_execute (Vthis_command, Qnil, Qnil);
|
|
|
4346 }
|
|
|
4347
|
|
|
4348 post_command_hook ();
|
|
|
4349
|
|
185
|
4350 #if 0 /* #### here was an attempted fix that didn't work */
|
|
|
4351 if (XEVENT (event)->event_type == misc_user_event)
|
|
|
4352 ;
|
|
|
4353 else
|
|
|
4354 #endif
|
|
380
|
4355 if (!NILP (con->prefix_arg))
|
|
0
|
4356 {
|
|
|
4357 /* Commands that set the prefix arg don't update last-command, don't
|
|
|
4358 reset the echoing state, and don't go into keyboard macros unless
|
|
185
|
4359 followed by another command. */
|
|
0
|
4360 maybe_echo_keys (command_builder, 0);
|
|
|
4361
|
|
|
4362 /* If we're recording a keyboard macro, and the last command
|
|
|
4363 executed set a prefix argument, then decrement the pointer to
|
|
|
4364 the "last character really in the macro" to be just before this
|
|
|
4365 command. This is so that the ^U in "^U ^X )" doesn't go onto
|
|
185
|
4366 the end of macro. */
|
|
0
|
4367 if (!NILP (con->defining_kbd_macro))
|
|
|
4368 con->kbd_macro_end = old_kbd_macro;
|
|
|
4369 }
|
|
|
4370 else
|
|
|
4371 {
|
|
|
4372 /* Start a new command next time */
|
|
|
4373 Vlast_command = Vthis_command;
|
|
|
4374 /* Emacs 18 doesn't unconditionally clear the echoed keystrokes,
|
|
|
4375 so we don't either */
|
|
|
4376 reset_this_command_keys (make_console (con), 0);
|
|
|
4377 }
|
|
|
4378 }
|
|
|
4379
|
|
|
4380 UNGCPRO;
|
|
|
4381 }
|
|
|
4382
|
|
|
4383 /* Run the pre command hook. */
|
|
|
4384
|
|
|
4385 static void
|
|
|
4386 pre_command_hook (void)
|
|
|
4387 {
|
|
|
4388 last_point_position = BUF_PT (current_buffer);
|
|
|
4389 XSETBUFFER (last_point_position_buffer, current_buffer);
|
|
|
4390 /* This function can GC */
|
|
|
4391 safe_run_hook_trapping_errors
|
|
|
4392 ("Error in `pre-command-hook' (setting hook to nil)",
|
|
|
4393 Qpre_command_hook, 1);
|
|
|
4394 }
|
|
|
4395
|
|
|
4396 /* Run the post command hook. */
|
|
|
4397
|
|
|
4398 static void
|
|
|
4399 post_command_hook (void)
|
|
|
4400 {
|
|
|
4401 /* This function can GC */
|
|
|
4402 /* Turn off region highlighting unless this command requested that
|
|
|
4403 it be left on, or we're in the minibuffer. We don't turn it off
|
|
|
4404 when we're in the minibuffer so that things like M-x write-region
|
|
|
4405 still work!
|
|
|
4406
|
|
|
4407 This could be done via a function on the post-command-hook, but
|
|
|
4408 we don't want the user to accidentally remove it.
|
|
|
4409 */
|
|
2
|
4410
|
|
|
4411 Lisp_Object win = Fselected_window (Qnil);
|
|
|
4412
|
|
412
|
4413 #if 0
|
|
2
|
4414 /* If the last command deleted the frame, `win' might be nil.
|
|
|
4415 It seems safest to do nothing in this case. */
|
|
412
|
4416 /* ### This doesn't really fix the problem,
|
|
2
|
4417 if delete-frame is called by some hook */
|
|
|
4418 if (NILP (win))
|
|
|
4419 return;
|
|
412
|
4420 #endif
|
|
173
|
4421
|
|
0
|
4422 if (! zmacs_region_stays
|
|
2
|
4423 && (!MINI_WINDOW_P (XWINDOW (win))
|
|
|
4424 || EQ (zmacs_region_buffer (), WINDOW_BUFFER (XWINDOW (win)))))
|
|
0
|
4425 zmacs_deactivate_region ();
|
|
|
4426 else
|
|
|
4427 zmacs_update_region ();
|
|
|
4428
|
|
|
4429 safe_run_hook_trapping_errors
|
|
|
4430 ("Error in `post-command-hook' (setting hook to nil)",
|
|
|
4431 Qpost_command_hook, 1);
|
|
|
4432
|
|
412
|
4433 #ifdef DEFERRED_ACTION_CRAP
|
|
0
|
4434 if (!NILP (Vdeferred_action_list))
|
|
|
4435 call0 (Vdeferred_action_function);
|
|
412
|
4436 #endif
|
|
|
4437
|
|
|
4438 #ifdef ILL_CONCEIVED_HOOK
|
|
0
|
4439 if (NILP (Vunread_command_events)
|
|
|
4440 && NILP (Vexecuting_macro)
|
|
|
4441 && !NILP (Vpost_command_idle_hook)
|
|
|
4442 && !NILP (Fsit_for (make_float ((double) post_command_idle_delay
|
|
|
4443 / 1000000), Qnil)))
|
|
|
4444 safe_run_hook_trapping_errors
|
|
|
4445 ("Error in `post-command-idle-hook' (setting hook to nil)",
|
|
|
4446 Qpost_command_idle_hook, 1);
|
|
412
|
4447 #endif
|
|
|
4448
|
|
|
4449 #if 0 /* FSFmacs */
|
|
0
|
4450 if (!NILP (current_buffer->mark_active))
|
|
|
4451 {
|
|
|
4452 if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode))
|
|
|
4453 {
|
|
|
4454 current_buffer->mark_active = Qnil;
|
|
|
4455 run_hook (intern ("deactivate-mark-hook"));
|
|
|
4456 }
|
|
|
4457 else if (current_buffer != prev_buffer ||
|
|
|
4458 BUF_MODIFF (current_buffer) != prev_modiff)
|
|
|
4459 run_hook (intern ("activate-mark-hook"));
|
|
|
4460 }
|
|
412
|
4461 #endif /* FSFmacs */
|
|
0
|
4462
|
|
|
4463 /* #### Kludge!!! This is necessary to make sure that things
|
|
|
4464 are properly positioned even if post-command-hook moves point.
|
|
|
4465 #### There should be a cleaner way of handling this. */
|
|
|
4466 call0 (Qauto_show_make_point_visible);
|
|
|
4467 }
|
|
|
4468
|
|
|
4469
|
|
20
|
4470 DEFUN ("dispatch-event", Fdispatch_event, 1, 1, 0, /*
|
|
0
|
4471 Given an event object as returned by `next-event', execute it.
|
|
|
4472
|
|
|
4473 Key-press, button-press, and button-release events get accumulated
|
|
|
4474 until a complete key sequence (see `read-key-sequence') is reached,
|
|
|
4475 at which point the sequence is looked up in the current keymaps and
|
|
|
4476 acted upon.
|
|
|
4477
|
|
|
4478 Mouse motion events cause the low-level handling function stored in
|
|
|
4479 `mouse-motion-handler' to be called. (There are very few circumstances
|
|
|
4480 under which you should change this handler. Use `mode-motion-hook'
|
|
|
4481 instead.)
|
|
|
4482
|
|
|
4483 Menu, timeout, and eval events cause the associated function or handler
|
|
|
4484 to be called.
|
|
|
4485
|
|
|
4486 Process events cause the subprocess's output to be read and acted upon
|
|
|
4487 appropriately (see `start-process').
|
|
|
4488
|
|
|
4489 Magic events are handled as necessary.
|
|
20
|
4490 */
|
|
|
4491 (event))
|
|
0
|
4492 {
|
|
|
4493 /* This function can GC */
|
|
|
4494 struct command_builder *command_builder;
|
|
412
|
4495 struct Lisp_Event *ev;
|
|
0
|
4496 Lisp_Object console;
|
|
|
4497 Lisp_Object channel;
|
|
|
4498
|
|
|
4499 CHECK_LIVE_EVENT (event);
|
|
|
4500 ev = XEVENT (event);
|
|
|
4501
|
|
|
4502 /* events on dead channels get silently eaten */
|
|
|
4503 channel = EVENT_CHANNEL (ev);
|
|
|
4504 if (object_dead_p (channel))
|
|
|
4505 return Qnil;
|
|
|
4506
|
|
|
4507 /* Some events don't have channels (e.g. eval events). */
|
|
|
4508 console = CDFW_CONSOLE (channel);
|
|
|
4509 if (NILP (console))
|
|
|
4510 console = Vselected_console;
|
|
|
4511 else if (!EQ (console, Vselected_console))
|
|
|
4512 Fselect_console (console);
|
|
|
4513
|
|
|
4514 command_builder = XCOMMAND_BUILDER (XCONSOLE (console)->command_builder);
|
|
173
|
4515 switch (XEVENT (event)->event_type)
|
|
0
|
4516 {
|
|
|
4517 case button_press_event:
|
|
|
4518 case button_release_event:
|
|
|
4519 case key_press_event:
|
|
|
4520 {
|
|
185
|
4521 Lisp_Object leaf = lookup_command_event (command_builder, event, 1);
|
|
|
4522
|
|
0
|
4523 if (KEYMAPP (leaf))
|
|
|
4524 /* Incomplete key sequence */
|
|
|
4525 break;
|
|
|
4526 if (NILP (leaf))
|
|
|
4527 {
|
|
|
4528 /* At this point, we know that the sequence is not bound to a
|
|
|
4529 command. Normally, we beep and print a message informing the
|
|
|
4530 user of this. But we do not beep or print a message when:
|
|
|
4531
|
|
|
4532 o the last event in this sequence is a mouse-up event; or
|
|
|
4533 o the last event in this sequence is a mouse-down event and
|
|
|
4534 there is a binding for the mouse-up version.
|
|
|
4535
|
|
|
4536 That is, if the sequence ``C-x button1'' is typed, and is not
|
|
|
4537 bound to a command, but the sequence ``C-x button1up'' is bound
|
|
|
4538 to a command, we do not complain about the ``C-x button1''
|
|
|
4539 sequence. If neither ``C-x button1'' nor ``C-x button1up'' is
|
|
|
4540 bound to a command, then we complain about the ``C-x button1''
|
|
|
4541 sequence, but later will *not* complain about the
|
|
|
4542 ``C-x button1up'' sequence, which would be redundant.
|
|
|
4543
|
|
|
4544 This is pretty hairy, but I think it's the most intuitive
|
|
|
4545 behavior.
|
|
|
4546 */
|
|
|
4547 Lisp_Object terminal = command_builder->most_current_event;
|
|
|
4548
|
|
|
4549 if (XEVENT_TYPE (terminal) == button_press_event)
|
|
|
4550 {
|
|
|
4551 int no_bitching;
|
|
|
4552 /* Temporarily pretend the last event was an "up" instead of a
|
|
|
4553 "down", and look up its binding. */
|
|
|
4554 XEVENT_TYPE (terminal) = button_release_event;
|
|
|
4555 /* If the "up" version is bound, don't complain. */
|
|
|
4556 no_bitching
|
|
185
|
4557 = !NILP (command_builder_find_leaf (command_builder, 0));
|
|
0
|
4558 /* Undo the temporary changes we just made. */
|
|
|
4559 XEVENT_TYPE (terminal) = button_press_event;
|
|
|
4560 if (no_bitching)
|
|
|
4561 {
|
|
|
4562 /* Pretend this press was not seen (treat as a prefix) */
|
|
|
4563 if (EQ (command_builder->current_events, terminal))
|
|
|
4564 {
|
|
|
4565 reset_current_events (command_builder);
|
|
|
4566 }
|
|
|
4567 else
|
|
|
4568 {
|
|
|
4569 Lisp_Object eve;
|
|
|
4570
|
|
|
4571 EVENT_CHAIN_LOOP (eve, command_builder->current_events)
|
|
|
4572 if (EQ (XEVENT_NEXT (eve), terminal))
|
|
|
4573 break;
|
|
|
4574
|
|
|
4575 Fdeallocate_event (command_builder->
|
|
|
4576 most_current_event);
|
|
|
4577 XSET_EVENT_NEXT (eve, Qnil);
|
|
|
4578 command_builder->most_current_event = eve;
|
|
|
4579 }
|
|
|
4580 maybe_echo_keys (command_builder, 1);
|
|
|
4581 break;
|
|
|
4582 }
|
|
|
4583 }
|
|
|
4584
|
|
|
4585 /* Complain that the typed sequence is not defined, if this is the
|
|
185
|
4586 kind of sequence that warrants a complaint. */
|
|
0
|
4587 XCONSOLE (console)->defining_kbd_macro = Qnil;
|
|
|
4588 XCONSOLE (console)->prefix_arg = Qnil;
|
|
|
4589 /* Don't complain about undefined button-release events */
|
|
173
|
4590 if (XEVENT_TYPE (terminal) != button_release_event)
|
|
0
|
4591 {
|
|
185
|
4592 Lisp_Object keys = current_events_into_vector (command_builder);
|
|
0
|
4593 struct gcpro gcpro1;
|
|
|
4594
|
|
|
4595 /* Run the pre-command-hook before barfing about an undefined
|
|
|
4596 key. */
|
|
|
4597 Vthis_command = Qnil;
|
|
|
4598 GCPRO1 (keys);
|
|
|
4599 pre_command_hook ();
|
|
|
4600 UNGCPRO;
|
|
|
4601 /* The post-command-hook doesn't run. */
|
|
|
4602 Fsignal (Qundefined_keystroke_sequence, list1 (keys));
|
|
|
4603 }
|
|
|
4604 /* Reset the command builder for reading the next sequence. */
|
|
|
4605 reset_this_command_keys (console, 1);
|
|
|
4606 }
|
|
2
|
4607 else /* key sequence is bound to a command */
|
|
0
|
4608 {
|
|
|
4609 Vthis_command = leaf;
|
|
|
4610 /* Don't push an undo boundary if the command set the prefix arg,
|
|
|
4611 or if we are executing a keyboard macro, or if in the
|
|
|
4612 minibuffer. If the command we are about to execute is
|
|
|
4613 self-insert, it's tricky: up to 20 consecutive self-inserts may
|
|
|
4614 be done without an undo boundary. This counter is reset as
|
|
|
4615 soon as a command other than self-insert-command is executed.
|
|
412
|
4616 */
|
|
|
4617 if (! EQ (leaf, Qself_insert_command))
|
|
0
|
4618 command_builder->self_insert_countdown = 0;
|
|
|
4619 if (NILP (XCONSOLE (console)->prefix_arg)
|
|
|
4620 && NILP (Vexecuting_macro)
|
|
|
4621 #if 0
|
|
|
4622 /* This was done in the days when there was no undo
|
|
|
4623 in the minibuffer. If we don't disable this code,
|
|
|
4624 then each instance of "undo" undoes everything in
|
|
|
4625 the minibuffer. */
|
|
|
4626 && !EQ (minibuf_window, Fselected_window (Qnil))
|
|
|
4627 #endif
|
|
|
4628 && command_builder->self_insert_countdown == 0)
|
|
|
4629 Fundo_boundary ();
|
|
|
4630
|
|
412
|
4631 if (EQ (leaf, Qself_insert_command))
|
|
0
|
4632 {
|
|
|
4633 if (--command_builder->self_insert_countdown < 0)
|
|
412
|
4634 command_builder->self_insert_countdown = 20;
|
|
0
|
4635 }
|
|
2
|
4636 execute_command_event
|
|
|
4637 (command_builder,
|
|
195
|
4638 internal_equal (event, command_builder-> most_current_event, 0)
|
|
2
|
4639 ? event
|
|
|
4640 /* Use the translated event that was most recently seen.
|
|
|
4641 This way, last-command-event becomes f1 instead of
|
|
|
4642 the P from ESC O P. But we must copy it, else we'll
|
|
|
4643 lose when the command-builder events are deallocated. */
|
|
|
4644 : Fcopy_event (command_builder-> most_current_event, Qnil));
|
|
0
|
4645 }
|
|
|
4646 break;
|
|
|
4647 }
|
|
|
4648 case misc_user_event:
|
|
|
4649 {
|
|
|
4650 /* Jamie said:
|
|
|
4651
|
|
|
4652 We could just always use the menu item entry, whatever it is, but
|
|
|
4653 this might break some Lisp code that expects `this-command' to
|
|
|
4654 always contain a symbol. So only store it if this is a simple
|
|
|
4655 `call-interactively' sort of menu item.
|
|
|
4656
|
|
|
4657 But this is bogus. `this-command' could be a string or vector
|
|
|
4658 anyway (for keyboard macros). There's even one instance
|
|
|
4659 (in pending-del.el) of `this-command' getting set to a cons
|
|
|
4660 (a lambda expression). So in the `eval' case I'll just
|
|
|
4661 convert it into a lambda expression.
|
|
|
4662 */
|
|
|
4663 if (EQ (XEVENT (event)->event.eval.function, Qcall_interactively)
|
|
|
4664 && SYMBOLP (XEVENT (event)->event.eval.object))
|
|
|
4665 Vthis_command = XEVENT (event)->event.eval.object;
|
|
|
4666 else if (EQ (XEVENT (event)->event.eval.function, Qeval))
|
|
|
4667 Vthis_command =
|
|
|
4668 Fcons (Qlambda, Fcons (Qnil, XEVENT (event)->event.eval.object));
|
|
|
4669 else if (SYMBOLP (XEVENT (event)->event.eval.function))
|
|
|
4670 /* A scrollbar command or the like. */
|
|
|
4671 Vthis_command = XEVENT (event)->event.eval.function;
|
|
|
4672 else
|
|
|
4673 /* Huh? */
|
|
|
4674 Vthis_command = Qnil;
|
|
|
4675
|
|
175
|
4676 /* clear the echo area */
|
|
|
4677 reset_key_echo (command_builder, 1);
|
|
185
|
4678
|
|
0
|
4679 command_builder->self_insert_countdown = 0;
|
|
|
4680 if (NILP (XCONSOLE (console)->prefix_arg)
|
|
|
4681 && NILP (Vexecuting_macro)
|
|
|
4682 && !EQ (minibuf_window, Fselected_window (Qnil)))
|
|
|
4683 Fundo_boundary ();
|
|
|
4684 execute_command_event (command_builder, event);
|
|
|
4685 break;
|
|
|
4686 }
|
|
|
4687 default:
|
|
|
4688 {
|
|
|
4689 execute_internal_event (event);
|
|
|
4690 break;
|
|
|
4691 }
|
|
|
4692 }
|
|
173
|
4693 return Qnil;
|
|
0
|
4694 }
|
|
|
4695
|
|
20
|
4696 DEFUN ("read-key-sequence", Fread_key_sequence, 1, 3, 0, /*
|
|
0
|
4697 Read a sequence of keystrokes or mouse clicks.
|
|
|
4698 Returns a vector of the event objects read. The vector and the event
|
|
|
4699 objects it contains are freshly created (and will not be side-effected
|
|
|
4700 by subsequent calls to this function).
|
|
|
4701
|
|
|
4702 The sequence read is sufficient to specify a non-prefix command starting
|
|
|
4703 from the current local and global keymaps. A C-g typed while in this
|
|
|
4704 function is treated like any other character, and `quit-flag' is not set.
|
|
|
4705
|
|
|
4706 First arg PROMPT is a prompt string. If nil, do not prompt specially.
|
|
98
|
4707 Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echoes
|
|
0
|
4708 as a continuation of the previous key.
|
|
|
4709
|
|
|
4710 The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not
|
|
|
4711 convert the last event to lower case. (Normally any upper case event
|
|
|
4712 is converted to lower case if the original event is undefined and the lower
|
|
|
4713 case equivalent is defined.) This argument is provided mostly for
|
|
|
4714 FSF compatibility; the equivalent effect can be achieved more generally
|
|
|
4715 by binding `retry-undefined-key-binding-unshifted' to nil around the
|
|
|
4716 call to `read-key-sequence'.
|
|
|
4717
|
|
|
4718 A C-g typed while in this function is treated like any other character,
|
|
|
4719 and `quit-flag' is not set.
|
|
|
4720
|
|
|
4721 If the user selects a menu item while we are prompting for a key-sequence,
|
|
|
4722 the returned value will be a vector of a single menu-selection event.
|
|
|
4723 An error will be signalled if you pass this value to `lookup-key' or a
|
|
|
4724 related function.
|
|
|
4725
|
|
|
4726 `read-key-sequence' checks `function-key-map' for function key
|
|
|
4727 sequences, where they wouldn't conflict with ordinary bindings. See
|
|
|
4728 `function-key-map' for more details.
|
|
20
|
4729 */
|
|
|
4730 (prompt, continue_echo, dont_downcase_last))
|
|
0
|
4731 {
|
|
|
4732 /* This function can GC */
|
|
|
4733 struct console *con = XCONSOLE (Vselected_console); /* #### correct?
|
|
|
4734 Probably not -- see
|
|
|
4735 comment in
|
|
|
4736 next-event */
|
|
|
4737 struct command_builder *command_builder =
|
|
|
4738 XCOMMAND_BUILDER (con->command_builder);
|
|
|
4739 Lisp_Object result;
|
|
189
|
4740 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
0
|
4741 int speccount = specpdl_depth ();
|
|
|
4742 struct gcpro gcpro1;
|
|
|
4743 GCPRO1 (event);
|
|
|
4744
|
|
|
4745 if (!NILP (prompt))
|
|
|
4746 CHECK_STRING (prompt);
|
|
|
4747 /* else prompt = Fkeymap_prompt (current_buffer->keymap); may GC */
|
|
|
4748 QUIT;
|
|
|
4749
|
|
|
4750 if (NILP (continue_echo))
|
|
|
4751 reset_this_command_keys (make_console (con), 1);
|
|
|
4752
|
|
|
4753 specbind (Qinhibit_quit, Qt);
|
|
|
4754
|
|
|
4755 if (!NILP (dont_downcase_last))
|
|
|
4756 specbind (Qretry_undefined_key_binding_unshifted, Qnil);
|
|
|
4757
|
|
|
4758 for (;;)
|
|
|
4759 {
|
|
|
4760 Fnext_event (event, prompt);
|
|
|
4761 /* restore the selected-console damage */
|
|
|
4762 con = event_console_or_selected (event);
|
|
|
4763 command_builder = XCOMMAND_BUILDER (con->command_builder);
|
|
|
4764 if (! command_event_p (event))
|
|
|
4765 execute_internal_event (event);
|
|
|
4766 else
|
|
|
4767 {
|
|
|
4768 if (XEVENT (event)->event_type == misc_user_event)
|
|
|
4769 reset_current_events (command_builder);
|
|
|
4770 result = lookup_command_event (command_builder, event, 1);
|
|
|
4771 if (!KEYMAPP (result))
|
|
|
4772 {
|
|
|
4773 result = current_events_into_vector (command_builder);
|
|
|
4774 reset_key_echo (command_builder, 0);
|
|
|
4775 break;
|
|
|
4776 }
|
|
|
4777 prompt = Qnil;
|
|
|
4778 }
|
|
|
4779 }
|
|
|
4780
|
|
|
4781 Vquit_flag = Qnil; /* In case we read a ^G; do not call check_quit() here */
|
|
|
4782 Fdeallocate_event (event);
|
|
|
4783 RETURN_UNGCPRO (unbind_to (speccount, result));
|
|
|
4784 }
|
|
|
4785
|
|
20
|
4786 DEFUN ("this-command-keys", Fthis_command_keys, 0, 0, 0, /*
|
|
0
|
4787 Return a vector of the keyboard or mouse button events that were used
|
|
|
4788 to invoke this command. This copies the vector and the events; it is safe
|
|
|
4789 to keep and modify them.
|
|
20
|
4790 */
|
|
|
4791 ())
|
|
0
|
4792 {
|
|
|
4793 Lisp_Object event;
|
|
|
4794 Lisp_Object result;
|
|
|
4795 int len;
|
|
|
4796
|
|
|
4797 if (NILP (Vthis_command_keys))
|
|
173
|
4798 return make_vector (0, Qnil);
|
|
0
|
4799
|
|
|
4800 len = event_chain_count (Vthis_command_keys);
|
|
|
4801
|
|
|
4802 result = make_vector (len, Qnil);
|
|
|
4803 len = 0;
|
|
|
4804 EVENT_CHAIN_LOOP (event, Vthis_command_keys)
|
|
173
|
4805 XVECTOR_DATA (result)[len++] = Fcopy_event (event, Qnil);
|
|
|
4806 return result;
|
|
0
|
4807 }
|
|
|
4808
|
|
20
|
4809 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths, 0, 0, 0, /*
|
|
0
|
4810 Used for complicated reasons in `universal-argument-other-key'.
|
|
|
4811
|
|
|
4812 `universal-argument-other-key' rereads the event just typed.
|
|
|
4813 It then gets translated through `function-key-map'.
|
|
|
4814 The translated event gets included in the echo area and in
|
|
|
4815 the value of `this-command-keys' in addition to the raw original event.
|
|
|
4816 That is not right.
|
|
|
4817
|
|
|
4818 Calling this function directs the translated event to replace
|
|
|
4819 the original event, so that only one version of the event actually
|
|
412
|
4820 appears in the echo area and in the value of `this-command-keys.'.
|
|
20
|
4821 */
|
|
|
4822 ())
|
|
0
|
4823 {
|
|
|
4824 /* #### I don't understand this at all, so currently it does nothing.
|
|
|
4825 If there is ever a problem, maybe someone should investigate. */
|
|
|
4826 return Qnil;
|
|
|
4827 }
|
|
|
4828
|
|
|
4829
|
|
|
4830 static void
|
|
|
4831 dribble_out_event (Lisp_Object event)
|
|
|
4832 {
|
|
|
4833 if (NILP (Vdribble_file))
|
|
|
4834 return;
|
|
|
4835
|
|
|
4836 if (XEVENT (event)->event_type == key_press_event &&
|
|
|
4837 !XEVENT (event)->event.key.modifiers)
|
|
|
4838 {
|
|
|
4839 Lisp_Object keysym = XEVENT (event)->event.key.keysym;
|
|
|
4840 if (CHARP (XEVENT (event)->event.key.keysym))
|
|
|
4841 {
|
|
|
4842 Emchar ch = XCHAR (keysym);
|
|
|
4843 Bufbyte str[MAX_EMCHAR_LEN];
|
|
412
|
4844 Bytecount len;
|
|
|
4845
|
|
|
4846 len = set_charptr_emchar (str, ch);
|
|
0
|
4847 Lstream_write (XLSTREAM (Vdribble_file), str, len);
|
|
|
4848 }
|
|
|
4849 else if (string_char_length (XSYMBOL (keysym)->name) == 1)
|
|
|
4850 /* one-char key events are printed with just the key name */
|
|
|
4851 Fprinc (keysym, Vdribble_file);
|
|
|
4852 else if (EQ (keysym, Qreturn))
|
|
|
4853 Lstream_putc (XLSTREAM (Vdribble_file), '\n');
|
|
|
4854 else if (EQ (keysym, Qspace))
|
|
|
4855 Lstream_putc (XLSTREAM (Vdribble_file), ' ');
|
|
|
4856 else
|
|
|
4857 Fprinc (event, Vdribble_file);
|
|
|
4858 }
|
|
|
4859 else
|
|
|
4860 Fprinc (event, Vdribble_file);
|
|
|
4861 Lstream_flush (XLSTREAM (Vdribble_file));
|
|
|
4862 }
|
|
|
4863
|
|
20
|
4864 DEFUN ("open-dribble-file", Fopen_dribble_file, 1, 1,
|
|
|
4865 "FOpen dribble file: ", /*
|
|
0
|
4866 Start writing all keyboard characters to a dribble file called FILE.
|
|
|
4867 If FILE is nil, close any open dribble file.
|
|
20
|
4868 */
|
|
|
4869 (file))
|
|
0
|
4870 {
|
|
|
4871 /* This function can GC */
|
|
|
4872 /* XEmacs change: always close existing dribble file. */
|
|
|
4873 /* FSFmacs uses FILE *'s here. With lstreams, that's unnecessary. */
|
|
|
4874 if (!NILP (Vdribble_file))
|
|
|
4875 {
|
|
|
4876 Lstream_close (XLSTREAM (Vdribble_file));
|
|
|
4877 Vdribble_file = Qnil;
|
|
|
4878 }
|
|
|
4879 if (!NILP (file))
|
|
|
4880 {
|
|
|
4881 int fd;
|
|
|
4882
|
|
|
4883 file = Fexpand_file_name (file, Qnil);
|
|
251
|
4884 fd = open ((char*) XSTRING_DATA (file),
|
|
|
4885 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
4886 CREAT_MODE);
|
|
0
|
4887 if (fd < 0)
|
|
|
4888 error ("Unable to create dribble file");
|
|
|
4889 Vdribble_file = make_filedesc_output_stream (fd, 0, 0, LSTR_CLOSING);
|
|
263
|
4890 #ifdef MULE
|
|
70
|
4891 Vdribble_file =
|
|
|
4892 make_encoding_output_stream (XLSTREAM (Vdribble_file),
|
|
|
4893 Fget_coding_system (Qescape_quoted));
|
|
|
4894 #endif
|
|
0
|
4895 }
|
|
|
4896 return Qnil;
|
|
|
4897 }
|
|
|
4898
|
|
|
4899
|
|
|
4900 /************************************************************************/
|
|
|
4901 /* initialization */
|
|
|
4902 /************************************************************************/
|
|
|
4903
|
|
|
4904 void
|
|
|
4905 syms_of_event_stream (void)
|
|
|
4906 {
|
|
|
4907 defsymbol (&Qdisabled, "disabled");
|
|
|
4908 defsymbol (&Qcommand_event_p, "command-event-p");
|
|
|
4909
|
|
|
4910 deferror (&Qundefined_keystroke_sequence, "undefined-keystroke-sequence",
|
|
|
4911 "Undefined keystroke sequence", Qerror);
|
|
412
|
4912 defsymbol (&Qcommand_execute, "command-execute");
|
|
0
|
4913
|
|
20
|
4914 DEFSUBR (Frecent_keys);
|
|
153
|
4915 DEFSUBR (Frecent_keys_ring_size);
|
|
|
4916 DEFSUBR (Fset_recent_keys_ring_size);
|
|
20
|
4917 DEFSUBR (Finput_pending_p);
|
|
|
4918 DEFSUBR (Fenqueue_eval_event);
|
|
|
4919 DEFSUBR (Fnext_event);
|
|
|
4920 DEFSUBR (Fnext_command_event);
|
|
|
4921 DEFSUBR (Fdiscard_input);
|
|
|
4922 DEFSUBR (Fsit_for);
|
|
|
4923 DEFSUBR (Fsleep_for);
|
|
|
4924 DEFSUBR (Faccept_process_output);
|
|
|
4925 DEFSUBR (Fadd_timeout);
|
|
|
4926 DEFSUBR (Fdisable_timeout);
|
|
|
4927 DEFSUBR (Fadd_async_timeout);
|
|
|
4928 DEFSUBR (Fdisable_async_timeout);
|
|
|
4929 DEFSUBR (Fdispatch_event);
|
|
|
4930 DEFSUBR (Fread_key_sequence);
|
|
|
4931 DEFSUBR (Fthis_command_keys);
|
|
|
4932 DEFSUBR (Freset_this_command_lengths);
|
|
|
4933 DEFSUBR (Fopen_dribble_file);
|
|
412
|
4934 #if defined(HAVE_X_WINDOWS) && defined(LWLIB_MENUBARS_LUCID)
|
|
|
4935 DEFSUBR (Faccelerate_menu);
|
|
|
4936 #endif
|
|
0
|
4937
|
|
|
4938 defsymbol (&Qpre_command_hook, "pre-command-hook");
|
|
|
4939 defsymbol (&Qpost_command_hook, "post-command-hook");
|
|
|
4940 defsymbol (&Qunread_command_events, "unread-command-events");
|
|
|
4941 defsymbol (&Qunread_command_event, "unread-command-event");
|
|
|
4942 defsymbol (&Qpre_idle_hook, "pre-idle-hook");
|
|
412
|
4943 #ifdef ILL_CONCEIVED_HOOK
|
|
0
|
4944 defsymbol (&Qpost_command_idle_hook, "post-command-idle-hook");
|
|
412
|
4945 #endif
|
|
|
4946 #ifdef DEFERRED_ACTION_CRAP
|
|
0
|
4947 defsymbol (&Qdeferred_action_function, "deferred-action-function");
|
|
|
4948 #endif
|
|
|
4949 defsymbol (&Qretry_undefined_key_binding_unshifted,
|
|
|
4950 "retry-undefined-key-binding-unshifted");
|
|
|
4951 defsymbol (&Qauto_show_make_point_visible,
|
|
|
4952 "auto-show-make-point-visible");
|
|
175
|
4953
|
|
412
|
4954 defsymbol (&Qmenu_force, "menu-force");
|
|
|
4955 defsymbol (&Qmenu_fallback, "menu-fallback");
|
|
|
4956
|
|
|
4957 defsymbol (&Qmenu_quit, "menu-quit");
|
|
|
4958 defsymbol (&Qmenu_up, "menu-up");
|
|
|
4959 defsymbol (&Qmenu_down, "menu-down");
|
|
|
4960 defsymbol (&Qmenu_left, "menu-left");
|
|
|
4961 defsymbol (&Qmenu_right, "menu-right");
|
|
|
4962 defsymbol (&Qmenu_select, "menu-select");
|
|
|
4963 defsymbol (&Qmenu_escape, "menu-escape");
|
|
|
4964
|
|
290
|
4965 defsymbol (&Qcancel_mode_internal, "cancel-mode-internal");
|
|
0
|
4966 }
|
|
|
4967
|
|
|
4968 void
|
|
|
4969 vars_of_event_stream (void)
|
|
|
4970 {
|
|
412
|
4971 recent_keys_ring_index = 0;
|
|
|
4972 recent_keys_ring_size = 100;
|
|
153
|
4973 Vrecent_keys_ring = Qnil;
|
|
|
4974 staticpro (&Vrecent_keys_ring);
|
|
0
|
4975
|
|
|
4976 Vthis_command_keys = Qnil;
|
|
|
4977 staticpro (&Vthis_command_keys);
|
|
|
4978 Vthis_command_keys_tail = Qnil;
|
|
412
|
4979
|
|
|
4980 num_input_chars = 0;
|
|
173
|
4981
|
|
0
|
4982 command_event_queue = Qnil;
|
|
|
4983 staticpro (&command_event_queue);
|
|
|
4984 command_event_queue_tail = Qnil;
|
|
|
4985
|
|
|
4986 Vlast_selected_frame = Qnil;
|
|
|
4987 staticpro (&Vlast_selected_frame);
|
|
|
4988
|
|
|
4989 pending_timeout_list = Qnil;
|
|
|
4990 staticpro (&pending_timeout_list);
|
|
|
4991
|
|
|
4992 pending_async_timeout_list = Qnil;
|
|
|
4993 staticpro (&pending_async_timeout_list);
|
|
|
4994
|
|
412
|
4995 Vtimeout_free_list = make_opaque_list (sizeof (struct timeout),
|
|
|
4996 mark_timeout);
|
|
|
4997 staticpro (&Vtimeout_free_list);
|
|
|
4998
|
|
|
4999 the_low_level_timeout_blocktype =
|
|
|
5000 Blocktype_new (struct low_level_timeout_blocktype);
|
|
|
5001
|
|
|
5002 something_happened = 0;
|
|
|
5003
|
|
0
|
5004 last_point_position_buffer = Qnil;
|
|
|
5005 staticpro (&last_point_position_buffer);
|
|
|
5006
|
|
412
|
5007 recursive_sit_for = Qnil;
|
|
|
5008
|
|
211
|
5009 DEFVAR_LISP ("echo-keystrokes", &Vecho_keystrokes /*
|
|
0
|
5010 *Nonzero means echo unfinished commands after this many seconds of pause.
|
|
|
5011 */ );
|
|
211
|
5012 Vecho_keystrokes = make_int (1);
|
|
0
|
5013
|
|
|
5014 DEFVAR_INT ("auto-save-interval", &auto_save_interval /*
|
|
|
5015 *Number of keyboard input characters between auto-saves.
|
|
|
5016 Zero means disable autosaving due to number of characters typed.
|
|
|
5017 See also the variable `auto-save-timeout'.
|
|
|
5018 */ );
|
|
|
5019 auto_save_interval = 300;
|
|
|
5020
|
|
|
5021 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook /*
|
|
|
5022 Function or functions to run before every command.
|
|
|
5023 This may examine the `this-command' variable to find out what command
|
|
|
5024 is about to be run, or may change it to cause a different command to run.
|
|
|
5025 Function on this hook must be careful to avoid signalling errors!
|
|
|
5026 */ );
|
|
|
5027 Vpre_command_hook = Qnil;
|
|
|
5028
|
|
|
5029 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook /*
|
|
|
5030 Function or functions to run after every command.
|
|
|
5031 This may examine the `this-command' variable to find out what command
|
|
|
5032 was just executed.
|
|
|
5033 */ );
|
|
|
5034 Vpost_command_hook = Qnil;
|
|
|
5035
|
|
|
5036 DEFVAR_LISP ("pre-idle-hook", &Vpre_idle_hook /*
|
|
|
5037 Normal hook run when XEmacs it about to be idle.
|
|
|
5038 This occurs whenever it is going to block, waiting for an event.
|
|
|
5039 This generally happens as a result of a call to `next-event',
|
|
|
5040 `next-command-event', `sit-for', `sleep-for', `accept-process-output',
|
|
|
5041 `x-get-selection', or various Energize-specific commands.
|
|
|
5042 Errors running the hook are caught and ignored.
|
|
|
5043 */ );
|
|
|
5044 Vpre_idle_hook = Qnil;
|
|
|
5045
|
|
72
|
5046 DEFVAR_BOOL ("focus-follows-mouse", &focus_follows_mouse /*
|
|
142
|
5047 *Variable to control XEmacs behavior with respect to focus changing.
|
|
72
|
5048 If this variable is set to t, then XEmacs will not gratuitously change
|
|
142
|
5049 the keyboard focus. XEmacs cannot in general detect when this mode is
|
|
388
|
5050 used by the window manager, so it is up to the user to set it.
|
|
72
|
5051 */ );
|
|
|
5052 focus_follows_mouse = 0;
|
|
|
5053
|
|
412
|
5054 #ifdef ILL_CONCEIVED_HOOK
|
|
0
|
5055 /* Ill-conceived because it's not run in all sorts of cases
|
|
|
5056 where XEmacs is blocking. That's what `pre-idle-hook'
|
|
|
5057 is designed to solve. */
|
|
|
5058 xxDEFVAR_LISP ("post-command-idle-hook", &Vpost_command_idle_hook /*
|
|
|
5059 Normal hook run after each command is executed, if idle.
|
|
|
5060 `post-command-idle-delay' specifies a time in microseconds that XEmacs
|
|
|
5061 must be idle for in order for the functions on this hook to be called.
|
|
|
5062 Errors running the hook are caught and ignored.
|
|
|
5063 */ );
|
|
|
5064 Vpost_command_idle_hook = Qnil;
|
|
|
5065
|
|
|
5066 xxDEFVAR_INT ("post-command-idle-delay", &post_command_idle_delay /*
|
|
|
5067 Delay time before running `post-command-idle-hook'.
|
|
|
5068 This is measured in microseconds.
|
|
|
5069 */ );
|
|
|
5070 post_command_idle_delay = 5000;
|
|
412
|
5071 #endif /* ILL_CONCEIVED_HOOK */
|
|
|
5072
|
|
|
5073 #ifdef DEFERRED_ACTION_CRAP
|
|
0
|
5074 /* Random FSFmacs crap. There is absolutely nothing to gain,
|
|
|
5075 and a great deal to lose, in using this in place of just
|
|
|
5076 setting `post-command-hook'. */
|
|
|
5077 xxDEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list /*
|
|
|
5078 List of deferred actions to be performed at a later time.
|
|
|
5079 The precise format isn't relevant here; we just check whether it is nil.
|
|
|
5080 */ );
|
|
|
5081 Vdeferred_action_list = Qnil;
|
|
|
5082
|
|
|
5083 xxDEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function /*
|
|
|
5084 Function to call to handle deferred actions, after each command.
|
|
|
5085 This function is called with no arguments after each command
|
|
|
5086 whenever `deferred-action-list' is non-nil.
|
|
|
5087 */ );
|
|
|
5088 Vdeferred_action_function = Qnil;
|
|
412
|
5089 #endif /* DEFERRED_ACTION_CRAP */
|
|
0
|
5090
|
|
|
5091 DEFVAR_LISP ("last-command-event", &Vlast_command_event /*
|
|
|
5092 Last keyboard or mouse button event that was part of a command. This
|
|
|
5093 variable is off limits: you may not set its value or modify the event that
|
|
|
5094 is its value, as it is destructively modified by `read-key-sequence'. If
|
|
|
5095 you want to keep a pointer to this value, you must use `copy-event'.
|
|
|
5096 */ );
|
|
|
5097 Vlast_command_event = Qnil;
|
|
|
5098
|
|
|
5099 DEFVAR_LISP ("last-command-char", &Vlast_command_char /*
|
|
|
5100 If the value of `last-command-event' is a keyboard event, then
|
|
2
|
5101 this is the nearest ASCII equivalent to it. This is the value that
|
|
0
|
5102 `self-insert-command' will put in the buffer. Remember that there is
|
|
|
5103 NOT a 1:1 mapping between keyboard events and ASCII characters: the set
|
|
|
5104 of keyboard events is much larger, so writing code that examines this
|
|
|
5105 variable to determine what key has been typed is bad practice, unless
|
|
|
5106 you are certain that it will be one of a small set of characters.
|
|
|
5107 */ );
|
|
|
5108 Vlast_command_char = Qnil;
|
|
|
5109
|
|
|
5110 DEFVAR_LISP ("last-input-event", &Vlast_input_event /*
|
|
|
5111 Last keyboard or mouse button event received. This variable is off
|
|
|
5112 limits: you may not set its value or modify the event that is its value, as
|
|
|
5113 it is destructively modified by `next-event'. If you want to keep a pointer
|
|
|
5114 to this value, you must use `copy-event'.
|
|
|
5115 */ );
|
|
|
5116 Vlast_input_event = Qnil;
|
|
|
5117
|
|
|
5118 DEFVAR_LISP ("current-mouse-event", &Vcurrent_mouse_event /*
|
|
|
5119 The mouse-button event which invoked this command, or nil.
|
|
185
|
5120 This is usually what `(interactive "e")' returns.
|
|
0
|
5121 */ );
|
|
|
5122 Vcurrent_mouse_event = Qnil;
|
|
|
5123
|
|
|
5124 DEFVAR_LISP ("last-input-char", &Vlast_input_char /*
|
|
|
5125 If the value of `last-input-event' is a keyboard event, then
|
|
|
5126 this is the nearest ASCII equivalent to it. Remember that there is
|
|
|
5127 NOT a 1:1 mapping between keyboard events and ASCII characters: the set
|
|
|
5128 of keyboard events is much larger, so writing code that examines this
|
|
|
5129 variable to determine what key has been typed is bad practice, unless
|
|
|
5130 you are certain that it will be one of a small set of characters.
|
|
|
5131 */ );
|
|
|
5132 Vlast_input_char = Qnil;
|
|
|
5133
|
|
|
5134 DEFVAR_LISP ("last-input-time", &Vlast_input_time /*
|
|
|
5135 The time (in seconds since Jan 1, 1970) of the last-command-event,
|
|
|
5136 represented as a cons of two 16-bit integers. This is destructively
|
|
|
5137 modified, so copy it if you want to keep it.
|
|
|
5138 */ );
|
|
|
5139 Vlast_input_time = Qnil;
|
|
|
5140
|
|
211
|
5141 DEFVAR_LISP ("last-command-event-time", &Vlast_command_event_time /*
|
|
|
5142 The time (in seconds since Jan 1, 1970) of the last-command-event,
|
|
|
5143 represented as a list of three integers. The first integer contains
|
|
|
5144 the most significant 16 bits of the number of seconds, and the second
|
|
|
5145 integer contains the least significant 16 bits. The third integer
|
|
|
5146 contains the remainder number of microseconds, if the current system
|
|
|
5147 supports microsecond clock resolution. This list is destructively
|
|
|
5148 modified, so copy it if you want to keep it.
|
|
|
5149 */ );
|
|
|
5150 Vlast_command_event_time = Qnil;
|
|
|
5151
|
|
0
|
5152 DEFVAR_LISP ("unread-command-events", &Vunread_command_events /*
|
|
|
5153 List of event objects to be read as next command input events.
|
|
|
5154 This can be used to simulate the receipt of events from the user.
|
|
|
5155 Normally this is nil.
|
|
|
5156 Events are removed from the front of this list.
|
|
|
5157 */ );
|
|
|
5158 Vunread_command_events = Qnil;
|
|
|
5159
|
|
|
5160 DEFVAR_LISP ("unread-command-event", &Vunread_command_event /*
|
|
|
5161 Obsolete. Use `unread-command-events' instead.
|
|
|
5162 */ );
|
|
|
5163 Vunread_command_event = Qnil;
|
|
|
5164
|
|
|
5165 DEFVAR_LISP ("last-command", &Vlast_command /*
|
|
|
5166 The last command executed. Normally a symbol with a function definition,
|
|
|
5167 but can be whatever was found in the keymap, or whatever the variable
|
|
|
5168 `this-command' was set to by that command.
|
|
|
5169 */ );
|
|
|
5170 Vlast_command = Qnil;
|
|
|
5171
|
|
|
5172 DEFVAR_LISP ("this-command", &Vthis_command /*
|
|
|
5173 The command now being executed.
|
|
|
5174 The command can set this variable; whatever is put here
|
|
|
5175 will be in `last-command' during the following command.
|
|
|
5176 */ );
|
|
|
5177 Vthis_command = Qnil;
|
|
|
5178
|
|
|
5179 DEFVAR_LISP ("help-char", &Vhelp_char /*
|
|
|
5180 Character to recognize as meaning Help.
|
|
|
5181 When it is read, do `(eval help-form)', and display result if it's a string.
|
|
|
5182 If the value of `help-form' is nil, this char can be read normally.
|
|
|
5183 This can be any form recognized as a single key specifier.
|
|
98
|
5184 The help-char cannot be a negative number in XEmacs.
|
|
0
|
5185 */ );
|
|
|
5186 Vhelp_char = make_char (8); /* C-h */
|
|
|
5187
|
|
|
5188 DEFVAR_LISP ("help-form", &Vhelp_form /*
|
|
|
5189 Form to execute when character help-char is read.
|
|
|
5190 If the form returns a string, that string is displayed.
|
|
|
5191 If `help-form' is nil, the help char is not recognized.
|
|
|
5192 */ );
|
|
|
5193 Vhelp_form = Qnil;
|
|
|
5194
|
|
|
5195 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command /*
|
|
|
5196 Command to run when `help-char' character follows a prefix key.
|
|
|
5197 This command is used only when there is no actual binding
|
|
|
5198 for that character after that prefix key.
|
|
|
5199 */ );
|
|
|
5200 Vprefix_help_command = Qnil;
|
|
|
5201
|
|
|
5202 DEFVAR_CONST_LISP ("keyboard-translate-table", &Vkeyboard_translate_table /*
|
|
|
5203 Hash table used as translate table for keyboard input.
|
|
|
5204 Use `keyboard-translate' to portably add entries to this table.
|
|
|
5205 Each key-press event is looked up in this table as follows:
|
|
|
5206
|
|
|
5207 -- If an entry maps a symbol to a symbol, then a key-press event whose
|
|
|
5208 keysym is the former symbol (with any modifiers at all) gets its
|
|
|
5209 keysym changed and its modifiers left alone. This is useful for
|
|
|
5210 dealing with non-standard X keyboards, such as the grievous damage
|
|
|
5211 that Sun has inflicted upon the world.
|
|
|
5212 -- If an entry maps a character to a character, then a key-press event
|
|
|
5213 matching the former character gets converted to a key-press event
|
|
|
5214 matching the latter character. This is useful on ASCII terminals
|
|
|
5215 for (e.g.) making C-\\ look like C-s, to get around flow-control
|
|
|
5216 problems.
|
|
|
5217 -- If an entry maps a character to a symbol, then a key-press event
|
|
|
5218 matching the character gets converted to a key-press event whose
|
|
|
5219 keysym is the given symbol and which has no modifiers.
|
|
|
5220 */ );
|
|
|
5221
|
|
|
5222 DEFVAR_LISP ("retry-undefined-key-binding-unshifted",
|
|
|
5223 &Vretry_undefined_key_binding_unshifted /*
|
|
|
5224 If a key-sequence which ends with a shifted keystroke is undefined
|
|
|
5225 and this variable is non-nil then the command lookup is retried again
|
|
|
5226 with the last key unshifted. (e.g. C-X C-F would be retried as C-X C-f.)
|
|
|
5227 If lookup still fails, a normal error is signalled. In general,
|
|
|
5228 you should *bind* this, not set it.
|
|
|
5229 */ );
|
|
|
5230 Vretry_undefined_key_binding_unshifted = Qt;
|
|
|
5231
|
|
70
|
5232 #ifdef HAVE_XIM
|
|
272
|
5233 DEFVAR_LISP ("composed-character-default-binding",
|
|
|
5234 &Vcomposed_character_default_binding /*
|
|
70
|
5235 The default keybinding to use for key events from composed input.
|
|
|
5236 Window systems frequently have ways to allow the user to compose
|
|
|
5237 single characters in a language using multiple keystrokes.
|
|
|
5238 XEmacs sees these as single character keypress events.
|
|
|
5239 */ );
|
|
|
5240 Vcomposed_character_default_binding = Qself_insert_command;
|
|
|
5241 #endif /* HAVE_XIM */
|
|
|
5242
|
|
0
|
5243 Vcontrolling_terminal = Qnil;
|
|
|
5244 staticpro (&Vcontrolling_terminal);
|
|
|
5245
|
|
|
5246 Vdribble_file = Qnil;
|
|
|
5247 staticpro (&Vdribble_file);
|
|
|
5248
|
|
|
5249 #ifdef DEBUG_XEMACS
|
|
|
5250 DEFVAR_INT ("debug-emacs-events", &debug_emacs_events /*
|
|
|
5251 If non-zero, display debug information about Emacs events that XEmacs sees.
|
|
|
5252 Information is displayed on stderr.
|
|
|
5253
|
|
|
5254 Before the event, the source of the event is displayed in parentheses,
|
|
|
5255 and is one of the following:
|
|
|
5256
|
|
|
5257 \(real) A real event from the window system or
|
|
|
5258 terminal driver, as far as XEmacs can tell.
|
|
|
5259
|
|
|
5260 \(keyboard macro) An event generated from a keyboard macro.
|
|
|
5261
|
|
|
5262 \(unread-command-events) An event taken from `unread-command-events'.
|
|
|
5263
|
|
|
5264 \(unread-command-event) An event taken from `unread-command-event'.
|
|
|
5265
|
|
|
5266 \(command event queue) An event taken from an internal queue.
|
|
|
5267 Events end up on this queue when
|
|
|
5268 `enqueue-eval-event' is called or when
|
|
|
5269 user or eval events are received while
|
|
|
5270 XEmacs is blocking (e.g. in `sit-for',
|
|
|
5271 `sleep-for', or `accept-process-output',
|
|
|
5272 or while waiting for the reply to an
|
|
|
5273 X selection).
|
|
|
5274
|
|
|
5275 \(->keyboard-translate-table) The result of an event translated through
|
|
|
5276 keyboard-translate-table. Note that in
|
|
|
5277 this case, two events are printed even
|
|
|
5278 though only one is really generated.
|
|
|
5279
|
|
|
5280 \(SIGINT) A faked C-g resulting when XEmacs receives
|
|
|
5281 a SIGINT (e.g. C-c was pressed in XEmacs'
|
|
|
5282 controlling terminal or the signal was
|
|
|
5283 explicitly sent to the XEmacs process).
|
|
|
5284 */ );
|
|
|
5285 debug_emacs_events = 0;
|
|
|
5286 #endif
|
|
175
|
5287
|
|
187
|
5288 DEFVAR_BOOL ("inhibit-input-event-recording", &inhibit_input_event_recording /*
|
|
|
5289 Non-nil inhibits recording of input-events to recent-keys ring.
|
|
|
5290 */ );
|
|
|
5291 inhibit_input_event_recording = 0;
|
|
412
|
5292
|
|
|
5293 DEFVAR_LISP("menu-accelerator-prefix", &Vmenu_accelerator_prefix /*
|
|
|
5294 Prefix key(s) that must be typed before menu accelerators will be activated.
|
|
|
5295 Set this to a value acceptable by define-key.
|
|
|
5296 */ );
|
|
|
5297 Vmenu_accelerator_prefix = Qnil;
|
|
|
5298
|
|
|
5299 DEFVAR_LISP ("menu-accelerator-modifiers", &Vmenu_accelerator_modifiers /*
|
|
|
5300 Modifier keys which must be pressed to get to the top level menu accelerators.
|
|
|
5301 This is a list of modifier key symbols. All modifier keys must be held down
|
|
|
5302 while a valid menu accelerator key is pressed in order for the top level
|
|
|
5303 menu to become active.
|
|
|
5304
|
|
|
5305 See also menu-accelerator-enabled and menu-accelerator-prefix.
|
|
|
5306 */ );
|
|
|
5307 Vmenu_accelerator_modifiers = list1 (Qmeta);
|
|
|
5308
|
|
|
5309 DEFVAR_LISP ("menu-accelerator-enabled", &Vmenu_accelerator_enabled /*
|
|
|
5310 Whether menu accelerator keys can cause the menubar to become active.
|
|
|
5311 If 'menu-force or 'menu-fallback, then menu accelerator keys can
|
|
|
5312 be used to activate the top level menu. Once the menubar becomes active, the
|
|
|
5313 accelerator keys can be used regardless of the value of this variable.
|
|
|
5314
|
|
|
5315 menu-force is used to indicate that the menu accelerator key takes
|
|
|
5316 precedence over bindings in the current keymap(s). menu-fallback means
|
|
|
5317 that bindings in the current keymap take precedence over menu accelerator keys.
|
|
|
5318 Thus a top level menu with an accelerator of "T" would be activated on a
|
|
|
5319 keypress of Meta-t if menu-accelerator-enabled is menu-force.
|
|
|
5320 However, if menu-accelerator-enabled is menu-fallback, then
|
|
|
5321 Meta-t will not activate the menubar and will instead run the function
|
|
|
5322 transpose-words, to which it is normally bound.
|
|
|
5323
|
|
|
5324 See also menu-accelerator-modifiers and menu-accelerator-prefix.
|
|
|
5325 */ );
|
|
|
5326 Vmenu_accelerator_enabled = Qnil;
|
|
0
|
5327 }
|
|
|
5328
|
|
|
5329 void
|
|
|
5330 complex_vars_of_event_stream (void)
|
|
|
5331 {
|
|
380
|
5332 Vkeyboard_translate_table =
|
|
|
5333 make_lisp_hash_table (100, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ);
|
|
412
|
5334
|
|
|
5335 DEFVAR_LISP ("menu-accelerator-map", &Vmenu_accelerator_map /*
|
|
|
5336 Keymap for use when the menubar is active.
|
|
|
5337 The actions menu-quit, menu-up, menu-down, menu-left, menu-right,
|
|
|
5338 menu-select and menu-escape can be mapped to keys in this map.
|
|
|
5339
|
|
|
5340 menu-quit Immediately deactivate the menubar and any open submenus without
|
|
|
5341 selecting an item.
|
|
|
5342 menu-up Move the menu cursor up one row in the current menu. If the
|
|
|
5343 move extends past the top of the menu, wrap around to the bottom.
|
|
|
5344 menu-down Move the menu cursor down one row in the current menu. If the
|
|
|
5345 move extends past the bottom of the menu, wrap around to the top.
|
|
|
5346 If executed while the cursor is in the top level menu, move down
|
|
|
5347 into the selected menu.
|
|
|
5348 menu-left Move the cursor from a submenu into the parent menu. If executed
|
|
|
5349 while the cursor is in the top level menu, move the cursor to the
|
|
|
5350 left. If the move extends past the left edge of the menu, wrap
|
|
|
5351 around to the right edge.
|
|
|
5352 menu-right Move the cursor into a submenu. If the cursor is located in the
|
|
|
5353 top level menu or is not currently on a submenu heading, then move
|
|
|
5354 the cursor to the next top level menu entry. If the move extends
|
|
|
5355 past the right edge of the menu, wrap around to the left edge.
|
|
|
5356 menu-select Activate the item under the cursor. If the cursor is located on
|
|
|
5357 a submenu heading, then move the cursor into the submenu.
|
|
|
5358 menu-escape Pop up to the next level of menus. Moves from a submenu into its
|
|
|
5359 parent menu. From the top level menu, this deactivates the
|
|
|
5360 menubar.
|
|
|
5361
|
|
|
5362 This keymap can also contain normal key-command bindings, in which case the
|
|
|
5363 menubar is deactivated and the corresponding command is executed.
|
|
|
5364
|
|
|
5365 The action bindings used by the menu accelerator code are designed to mimic
|
|
|
5366 the actions of menu traversal keys in a commonly used PC operating system.
|
|
|
5367 */ );
|
|
|
5368 Vmenu_accelerator_map = Fmake_keymap(Qnil);
|
|
0
|
5369 }
|
|
|
5370
|
|
|
5371 void
|
|
|
5372 init_event_stream (void)
|
|
|
5373 {
|
|
|
5374 if (initialized)
|
|
|
5375 {
|
|
|
5376 #ifdef HAVE_UNIXOID_EVENT_LOOP
|
|
392
|
5377 init_event_unixoid ();
|
|
0
|
5378 #endif
|
|
|
5379 #ifdef HAVE_X_WINDOWS
|
|
|
5380 if (!strcmp (display_use, "x"))
|
|
|
5381 init_event_Xt_late ();
|
|
|
5382 else
|
|
263
|
5383 #endif
|
|
|
5384 #ifdef HAVE_MS_WINDOWS
|
|
213
|
5385 if (!strcmp (display_use, "mswindows"))
|
|
|
5386 init_event_mswindows_late ();
|
|
209
|
5387 else
|
|
0
|
5388 #endif
|
|
|
5389 {
|
|
|
5390 /* For TTY's, use the Xt event loop if we can; it allows
|
|
|
5391 us to later open an X connection. */
|
|
394
|
5392 #if defined (HAVE_MS_WINDOWS) && (!defined (HAVE_TTY) \
|
|
|
5393 || (defined (HAVE_MSG_SELECT) \
|
|
|
5394 && !defined (DEBUG_TTY_EVENT_STREAM)))
|
|
392
|
5395 init_event_mswindows_late ();
|
|
|
5396 #elif defined (HAVE_X_WINDOWS) && !defined (DEBUG_TTY_EVENT_STREAM)
|
|
0
|
5397 init_event_Xt_late ();
|
|
209
|
5398 #elif defined (HAVE_TTY)
|
|
0
|
5399 init_event_tty_late ();
|
|
|
5400 #endif
|
|
|
5401 }
|
|
|
5402 init_interrupts_late ();
|
|
|
5403 }
|
|
|
5404 }
|
|
|
5405
|
|
|
5406
|
|
|
5407 /*
|
|
|
5408 useful testcases for v18/v19 compatibility:
|
|
|
5409
|
|
|
5410 (defun foo ()
|
|
|
5411 (interactive)
|
|
|
5412 (setq unread-command-event (character-to-event ?A (allocate-event)))
|
|
|
5413 (setq x (list (read-char)
|
|
|
5414 ; (read-key-sequence "") ; try it with and without this
|
|
|
5415 last-command-char last-input-char
|
|
|
5416 (recent-keys) (this-command-keys))))
|
|
|
5417 (global-set-key "\^Q" 'foo)
|
|
|
5418
|
|
|
5419 without the read-key-sequence:
|
|
|
5420 ^Q ==> (65 17 65 [... ^Q] [^Q])
|
|
|
5421 ^U^U^Q ==> (65 17 65 [... ^U ^U ^Q] [^U ^U ^Q])
|
|
|
5422 ^U^U^U^G^Q ==> (65 17 65 [... ^U ^U ^U ^G ^Q] [^Q])
|
|
|
5423
|
|
|
5424 with the read-key-sequence:
|
|
|
5425 ^Qb ==> (65 [b] 17 98 [... ^Q b] [b])
|
|
|
5426 ^U^U^Qb ==> (65 [b] 17 98 [... ^U ^U ^Q b] [b])
|
|
|
5427 ^U^U^U^G^Qb ==> (65 [b] 17 98 [... ^U ^U ^U ^G ^Q b] [b])
|
|
|
5428
|
|
|
5429 ;the evi-mode command "4dlj.j.j.j.j.j." is also a good testcase (gag)
|
|
|
5430
|
|
|
5431 ;(setq x (list (read-char) quit-flag))^J^G
|
|
|
5432 ;(let ((inhibit-quit t)) (setq x (list (read-char) quit-flag)))^J^G
|
|
|
5433 ;for BOTH, x should get set to (7 t), but no result should be printed.
|
|
|
5434
|
|
|
5435 ;also do this: make two frames, one viewing "*scratch*", the other "foo".
|
|
|
5436 ;in *scratch*, type (sit-for 20)^J
|
|
|
5437 ;wait a couple of seconds, move cursor to foo, type "a"
|
|
|
5438 ;a should be inserted in foo. Cursor highlighting should not change in
|
|
|
5439 ;the meantime.
|
|
|
5440
|
|
|
5441 ;do it with sleep-for. move cursor into foo, then back into *scratch*
|
|
|
5442 ;before typing.
|
|
108
|
5443 ;repeat also with (accept-process-output nil 20)
|
|
|
5444
|
|
|
5445 ;make sure ^G aborts sit-for, sleep-for and accept-process-output:
|
|
0
|
5446
|
|
|
5447 (defun tst ()
|
|
|
5448 (list (condition-case c
|
|
|
5449 (sleep-for 20)
|
|
|
5450 (quit c))
|
|
|
5451 (read-char)))
|
|
|
5452
|
|
|
5453 (tst)^Ja^G ==> ((quit) 97) with no signal
|
|
|
5454 (tst)^J^Ga ==> ((quit) 97) with no signal
|
|
|
5455 (tst)^Jabc^G ==> ((quit) 97) with no signal, and "bc" inserted in buffer
|
|
|
5456
|
|
108
|
5457 ; with sit-for only do the 2nd test.
|
|
380
|
5458 ; Do all 3 tests with (accept-process-output nil 20)
|
|
108
|
5459
|
|
0
|
5460 Do this:
|
|
|
5461 (setq enable-recursive-minibuffers t
|
|
|
5462 minibuffer-max-depth nil)
|
|
|
5463 ESC ESC ESC ESC - there are now two minibuffers active
|
|
|
5464 C-g C-g C-g - there should be active 0, not 1
|
|
|
5465 Similarly:
|
|
|
5466 C-x C-f ~ / ? - wait for "Making completion list..." to display
|
|
|
5467 C-g - wait for "Quit" to display
|
|
|
5468 C-g - minibuffer should not be active
|
|
|
5469 however C-g before "Quit" is displayed should leave minibuffer active.
|
|
|
5470
|
|
|
5471 ;do it all in both v18 and v19 and make sure all results are the same.
|
|
|
5472 ;all of these cases matter a lot, but some in quite subtle ways.
|
|
|
5473 */
|
|
108
|
5474
|
|
|
5475 /*
|
|
|
5476 Additional test cases for accept-process-output, sleep-for, sit-for.
|
|
|
5477 Be sure you do all of the above checking for C-g and focus, too!
|
|
|
5478
|
|
|
5479 ; Make sure that timer handlers are run during, not after sit-for:
|
|
|
5480 (defun timer-check ()
|
|
|
5481 (add-timeout 2 '(lambda (ignore) (message "timer ran")) nil)
|
|
|
5482 (sit-for 5)
|
|
|
5483 (message "after sit-for"))
|
|
|
5484
|
|
|
5485 ; The first message should appear after 2 seconds, and the final message
|
|
|
5486 ; 3 seconds after that.
|
|
|
5487 ; repeat above test with (sleep-for 5) and (accept-process-output nil 5)
|
|
|
5488
|
|
|
5489
|
|
|
5490
|
|
|
5491 ; Make sure that process filters are run during, not after sit-for.
|
|
|
5492 (defun fubar ()
|
|
|
5493 (message "sit-for = %s" (sit-for 30)))
|
|
|
5494 (add-hook 'post-command-hook 'fubar)
|
|
|
5495
|
|
|
5496 ; Now type M-x shell RET
|
|
|
5497 ; wait for the shell prompt then send: ls RET
|
|
|
5498 ; the output of ls should fill immediately, and not wait 30 seconds.
|
|
|
5499
|
|
|
5500 ; repeat above test with (sleep-for 30) and (accept-process-output nil 30)
|
|
|
5501
|
|
|
5502
|
|
|
5503
|
|
|
5504 ; Make sure that recursive invocations return immediately:
|
|
|
5505 (defmacro test-diff-time (start end)
|
|
|
5506 `(+ (* (- (car ,end) (car ,start)) 65536.0)
|
|
|
5507 (- (cadr ,end) (cadr ,start))
|
|
|
5508 (/ (- (caddr ,end) (caddr ,start)) 1000000.0)))
|
|
|
5509
|
|
|
5510 (defun testee (ignore)
|
|
110
|
5511 (sit-for 10))
|
|
108
|
5512
|
|
|
5513 (defun test-them ()
|
|
|
5514 (let ((start (current-time))
|
|
|
5515 end)
|
|
|
5516 (add-timeout 2 'testee nil)
|
|
|
5517 (sit-for 5)
|
|
|
5518 (add-timeout 2 'testee nil)
|
|
|
5519 (sleep-for 5)
|
|
|
5520 (add-timeout 2 'testee nil)
|
|
|
5521 (accept-process-output nil 5)
|
|
|
5522 (setq end (current-time))
|
|
|
5523 (test-diff-time start end)))
|
|
|
5524
|
|
110
|
5525 (test-them) should sit for 15 seconds.
|
|
|
5526 Repeat with testee set to sleep-for and accept-process-output.
|
|
|
5527 These should each delay 36 seconds.
|
|
108
|
5528
|
|
|
5529 */
|
