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428
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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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442
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26 /* Authorship:
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27
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28 Created 1991 by Jamie Zawinski.
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29 A great deal of work over the ages by Ben Wing (Mule-ization for 19.12,
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30 device abstraction for 19.12/19.13, async timers for 19.14,
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31 rewriting of focus code for 19.12, pre-idle hook for 19.12,
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32 redoing of signal and quit handling for 19.9 and 19.12,
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33 misc-user events to clean up menu/scrollbar handling for 19.11,
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34 function-key-map/key-translation-map/keyboard-translate-table for
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35 19.13/19.14, open-dribble-file for 19.13, much other cleanup).
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36 focus-follows-mouse from Chuck Thompson, 1995.
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37 XIM stuff by Martin Buchholz, c. 1996?.
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38 */
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39
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428
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40 /* This file has been Mule-ized. */
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41
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42 /*
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43 * DANGER!!
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44 *
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45 * If you ever change ANYTHING in this file, you MUST run the
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46 * testcases at the end to make sure that you haven't changed
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47 * the semantics of recent-keys, last-input-char, or keyboard
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48 * macros. You'd be surprised how easy it is to break this.
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49 *
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50 */
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51
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52 /* TODO:
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53 This stuff is way too hard to maintain - needs rework.
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54
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55 The command builder should deal only with key and button events.
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56 Other command events should be able to come in the MIDDLE of a key
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57 sequence, without disturbing the key sequence composition, or the
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58 command builder structure representing it.
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59
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60 Someone should rethink universal-argument and figure out how an
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61 arbitrary command can influence the next command (universal-argument
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62 or universal-coding-system-argument) or the next key (hyperify).
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63
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64 Both C-h and Help in the middle of a key sequence should trigger
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65 prefix-help-command. help-char is stupid. Maybe we need
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66 keymap-of-last-resort?
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67
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68 After prefix-help is run, one should be able to CONTINUE TYPING,
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69 instead of RETYPING, the key sequence.
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70 */
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71
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72 #include <config.h>
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73 #include "lisp.h"
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74
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75 #include "blocktype.h"
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76 #include "buffer.h"
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77 #include "commands.h"
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78 #include "device.h"
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79 #include "elhash.h"
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80 #include "events.h"
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81 #include "frame.h"
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82 #include "insdel.h" /* for buffer_reset_changes */
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83 #include "keymap.h"
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84 #include "lstream.h"
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85 #include "macros.h" /* for defining_keyboard_macro */
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442
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86 #include "menubar.h" /* #### for evil kludges. */
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428
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87 #include "process.h"
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88 #include "window.h"
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89
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90 #include "sysdep.h" /* init_poll_for_quit() */
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91 #include "syssignal.h" /* SIGCHLD, etc. */
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92 #include "sysfile.h"
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93 #include "systime.h" /* to set Vlast_input_time */
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94
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95 #include "events-mod.h"
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96 #ifdef FILE_CODING
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97 #include "file-coding.h"
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98 #endif
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99
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100 #include <errno.h>
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101
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102 /* The number of keystrokes between auto-saves. */
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103 static int auto_save_interval;
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104
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105 Lisp_Object Qundefined_keystroke_sequence;
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106
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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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442
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113 /* See simple.el */
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114 Lisp_Object Qhandle_pre_motion_command, Qhandle_post_motion_command;
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115
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428
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116 /* Hook run when XEmacs is about to be idle. */
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117 Lisp_Object Qpre_idle_hook, Vpre_idle_hook;
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118
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119 /* Control gratuitous keyboard focus throwing. */
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120 int focus_follows_mouse;
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121
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444
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122 /* When true, modifier keys are sticky. */
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442
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123 int modifier_keys_are_sticky;
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444
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124 /* Modifier keys are sticky for this many milliseconds. */
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125 Lisp_Object Vmodifier_keys_sticky_time;
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126
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127 /* Here FSF Emacs 20.7 defines Vpost_command_idle_hook,
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128 post_command_idle_delay, Vdeferred_action_list, and
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129 Vdeferred_action_function, but we don't because that stuff is crap,
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130 and we're smarter than them, and their momas are fat. */
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131
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132 /* FSF Emacs 20.7 also defines Vinput_method_function,
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133 Qinput_method_exit_on_first_char and Qinput_method_use_echo_area.
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134 I don't know this should be imported or not. */
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428
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135
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136 /* Non-nil disable property on a command means
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137 do not execute it; call disabled-command-hook's value instead. */
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138 Lisp_Object Qdisabled, Vdisabled_command_hook;
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139
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140 EXFUN (Fnext_command_event, 2);
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141
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142 static void pre_command_hook (void);
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143 static void post_command_hook (void);
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144
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145 /* Last keyboard or mouse input event read as a command. */
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146 Lisp_Object Vlast_command_event;
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147
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148 /* The nearest ASCII equivalent of the above. */
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149 Lisp_Object Vlast_command_char;
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150
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151 /* Last keyboard or mouse event read for any purpose. */
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152 Lisp_Object Vlast_input_event;
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153
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154 /* The nearest ASCII equivalent of the above. */
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155 Lisp_Object Vlast_input_char;
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156
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157 Lisp_Object Vcurrent_mouse_event;
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158
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159 /* This is fbound in cmdloop.el, see the commentary there */
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160 Lisp_Object Qcancel_mode_internal;
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161
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162 /* If not Qnil, event objects to be read as the next command input */
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163 Lisp_Object Vunread_command_events;
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164 Lisp_Object Vunread_command_event; /* obsoleteness support */
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165
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166 static Lisp_Object Qunread_command_events, Qunread_command_event;
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167
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168 /* Previous command, represented by a Lisp object.
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442
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169 Does not include prefix commands and arg setting commands. */
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428
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170 Lisp_Object Vlast_command;
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171
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442
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172 /* Contents of this-command-properties for the last command. */
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173 Lisp_Object Vlast_command_properties;
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174
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428
|
175 /* If a command sets this, the value goes into
|
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442
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176 last-command for the next command. */
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428
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177 Lisp_Object Vthis_command;
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178
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442
|
179 /* If a command sets this, the value goes into
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180 last-command-properties for the next command. */
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181 Lisp_Object Vthis_command_properties;
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182
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428
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183 /* The value of point when the last command was executed. */
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184 Bufpos last_point_position;
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185
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186 /* The frame that was current when the last command was started. */
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187 Lisp_Object Vlast_selected_frame;
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188
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189 /* The buffer that was current when the last command was started. */
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190 Lisp_Object last_point_position_buffer;
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191
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192 /* A (16bit . 16bit) representation of the time of the last-command-event. */
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193 Lisp_Object Vlast_input_time;
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194
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195 /* A (16bit 16bit usec) representation of the time
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196 of the last-command-event. */
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197 Lisp_Object Vlast_command_event_time;
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198
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199 /* Character to recognize as the help char. */
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200 Lisp_Object Vhelp_char;
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201
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202 /* Form to execute when help char is typed. */
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203 Lisp_Object Vhelp_form;
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204
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205 /* Command to run when the help character follows a prefix key. */
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206 Lisp_Object Vprefix_help_command;
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207
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208 /* Flag to tell QUIT that some interesting occurrence (e.g. a keypress)
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209 may have happened. */
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210 volatile int something_happened;
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211
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212 /* Hash table to translate keysyms through */
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213 Lisp_Object Vkeyboard_translate_table;
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214
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215 /* If control-meta-super-shift-X is undefined, try control-meta-super-x */
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216 Lisp_Object Vretry_undefined_key_binding_unshifted;
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217 Lisp_Object Qretry_undefined_key_binding_unshifted;
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218
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219 #ifdef HAVE_XIM
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220 /* If composed input is undefined, use self-insert-char */
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221 Lisp_Object Vcomposed_character_default_binding;
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222 #endif /* HAVE_XIM */
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223
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224 /* Console that corresponds to our controlling terminal */
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225 Lisp_Object Vcontrolling_terminal;
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226
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227 /* An event (actually an event chain linked through event_next) or Qnil.
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228 */
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229 Lisp_Object Vthis_command_keys;
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230 Lisp_Object Vthis_command_keys_tail;
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231
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232 /* #### kludge! */
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233 Lisp_Object Qauto_show_make_point_visible;
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234
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235 /* File in which we write all commands we read; an lstream */
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236 static Lisp_Object Vdribble_file;
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237
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238 /* Recent keys ring location; a vector of events or nil-s */
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239 Lisp_Object Vrecent_keys_ring;
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240 int recent_keys_ring_size;
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241 int recent_keys_ring_index;
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242
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243 /* Boolean specifying whether keystrokes should be added to
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244 recent-keys. */
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245 int inhibit_input_event_recording;
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246
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430
|
247 Lisp_Object Qself_insert_defer_undo;
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248
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428
|
249 /* this is in keymap.c */
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250 extern Lisp_Object Fmake_keymap (Lisp_Object name);
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251
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|
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252 #ifdef DEBUG_XEMACS
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253 int debug_emacs_events;
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254
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255 static void
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256 external_debugging_print_event (char *event_description, Lisp_Object event)
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257 {
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258 write_c_string ("(", Qexternal_debugging_output);
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259 write_c_string (event_description, Qexternal_debugging_output);
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260 write_c_string (") ", Qexternal_debugging_output);
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261 print_internal (event, Qexternal_debugging_output, 1);
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262 write_c_string ("\n", Qexternal_debugging_output);
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263 }
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264 #define DEBUG_PRINT_EMACS_EVENT(event_description, event) do { \
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265 if (debug_emacs_events) \
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266 external_debugging_print_event (event_description, event); \
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267 } while (0)
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268 #else
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269 #define DEBUG_PRINT_EMACS_EVENT(string, event)
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270 #endif
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271
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272
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273 /* The callback routines for the window system or terminal driver */
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274 struct event_stream *event_stream;
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275
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276 static void echo_key_event (struct command_builder *, Lisp_Object event);
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277 static void maybe_kbd_translate (Lisp_Object event);
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278
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279 /* This structure is basically a typeahead queue: things like
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280 wait-reading-process-output will delay the execution of
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281 keyboard and mouse events by pushing them here.
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282
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283 Chained through event_next()
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284 command_event_queue_tail is a pointer to the last-added element.
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285 */
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286 static Lisp_Object command_event_queue;
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287 static Lisp_Object command_event_queue_tail;
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288
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289 /* Nonzero means echo unfinished commands after this many seconds of pause. */
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290 static Lisp_Object Vecho_keystrokes;
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291
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292 /* The number of keystrokes since the last auto-save. */
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293 static int keystrokes_since_auto_save;
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294
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295 /* Used by the C-g signal handler so that it will never "hard quit"
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296 when waiting for an event. Otherwise holding down C-g could
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297 cause a suspension back to the shell, which is generally
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298 undesirable. (#### This doesn't fully work.) */
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299
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300 int emacs_is_blocking;
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301
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302 /* Handlers which run during sit-for, sleep-for and accept-process-output
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303 are not allowed to recursively call these routines. We record here
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304 if we are in that situation. */
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305
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306 static Lisp_Object recursive_sit_for;
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307
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308
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309
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310 /**********************************************************************/
|
|
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311 /* Command-builder object */
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312 /**********************************************************************/
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313
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|
|
314 #define XCOMMAND_BUILDER(x) \
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315 XRECORD (x, command_builder, struct command_builder)
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316 #define XSETCOMMAND_BUILDER(x, p) XSETRECORD (x, p, command_builder)
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317 #define COMMAND_BUILDERP(x) RECORDP (x, command_builder)
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318 #define CHECK_COMMAND_BUILDER(x) CHECK_RECORD (x, command_builder)
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319
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320 static Lisp_Object
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|
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321 mark_command_builder (Lisp_Object obj)
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|
|
322 {
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|
|
323 struct command_builder *builder = XCOMMAND_BUILDER (obj);
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|
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324 mark_object (builder->prefix_events);
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|
325 mark_object (builder->current_events);
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326 mark_object (builder->most_current_event);
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327 mark_object (builder->last_non_munged_event);
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|
328 mark_object (builder->munge_me[0].first_mungeable_event);
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|
329 mark_object (builder->munge_me[1].first_mungeable_event);
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|
330 return builder->console;
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|
|
331 }
|
|
|
332
|
|
|
333 static void
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|
|
334 finalize_command_builder (void *header, int for_disksave)
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|
|
335 {
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|
|
336 if (!for_disksave)
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|
|
337 {
|
|
|
338 xfree (((struct command_builder *) header)->echo_buf);
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|
|
339 ((struct command_builder *) header)->echo_buf = 0;
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|
|
340 }
|
|
|
341 }
|
|
|
342
|
|
|
343 DEFINE_LRECORD_IMPLEMENTATION ("command-builder", command_builder,
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|
|
344 mark_command_builder, internal_object_printer,
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|
|
345 finalize_command_builder, 0, 0, 0,
|
|
|
346 struct command_builder);
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|
|
347
|
|
|
348 static void
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|
|
349 reset_command_builder_event_chain (struct command_builder *builder)
|
|
|
350 {
|
|
|
351 builder->prefix_events = Qnil;
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|
|
352 builder->current_events = Qnil;
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|
|
353 builder->most_current_event = Qnil;
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|
|
354 builder->last_non_munged_event = Qnil;
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|
|
355 builder->munge_me[0].first_mungeable_event = Qnil;
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|
356 builder->munge_me[1].first_mungeable_event = Qnil;
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|
|
357 }
|
|
|
358
|
|
|
359 Lisp_Object
|
|
|
360 allocate_command_builder (Lisp_Object console)
|
|
|
361 {
|
|
|
362 Lisp_Object builder_obj;
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|
|
363 struct command_builder *builder =
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|
|
364 alloc_lcrecord_type (struct command_builder, &lrecord_command_builder);
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|
|
365
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|
|
366 builder->console = console;
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|
|
367 reset_command_builder_event_chain (builder);
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|
|
368 builder->echo_buf_length = 300; /* #### Kludge */
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|
|
369 builder->echo_buf = xnew_array (Bufbyte, builder->echo_buf_length);
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|
|
370 builder->echo_buf[0] = 0;
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|
|
371 builder->echo_buf_index = -1;
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|
|
372 builder->echo_buf_index = -1;
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|
|
373 builder->self_insert_countdown = 0;
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|
|
374
|
|
|
375 XSETCOMMAND_BUILDER (builder_obj, builder);
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|
|
376 return builder_obj;
|
|
|
377 }
|
|
|
378
|
|
|
379 static void
|
|
|
380 command_builder_append_event (struct command_builder *builder,
|
|
|
381 Lisp_Object event)
|
|
|
382 {
|
|
|
383 assert (EVENTP (event));
|
|
|
384
|
|
|
385 if (EVENTP (builder->most_current_event))
|
|
|
386 XSET_EVENT_NEXT (builder->most_current_event, event);
|
|
|
387 else
|
|
|
388 builder->current_events = event;
|
|
|
389
|
|
|
390 builder->most_current_event = event;
|
|
|
391 if (NILP (builder->munge_me[0].first_mungeable_event))
|
|
|
392 builder->munge_me[0].first_mungeable_event = event;
|
|
|
393 if (NILP (builder->munge_me[1].first_mungeable_event))
|
|
|
394 builder->munge_me[1].first_mungeable_event = event;
|
|
|
395 }
|
|
|
396
|
|
|
397
|
|
|
398 /**********************************************************************/
|
|
|
399 /* Low-level interfaces onto event methods */
|
|
|
400 /**********************************************************************/
|
|
|
401
|
|
|
402 enum event_stream_operation
|
|
|
403 {
|
|
|
404 EVENT_STREAM_PROCESS,
|
|
|
405 EVENT_STREAM_TIMEOUT,
|
|
|
406 EVENT_STREAM_CONSOLE,
|
|
|
407 EVENT_STREAM_READ
|
|
|
408 };
|
|
|
409
|
|
|
410 static void
|
|
|
411 check_event_stream_ok (enum event_stream_operation op)
|
|
|
412 {
|
|
|
413 if (!event_stream && noninteractive)
|
|
|
414 {
|
|
|
415 switch (op)
|
|
|
416 {
|
|
|
417 case EVENT_STREAM_PROCESS:
|
|
|
418 error ("Can't start subprocesses in -batch mode");
|
|
|
419 case EVENT_STREAM_TIMEOUT:
|
|
|
420 error ("Can't add timeouts in -batch mode");
|
|
|
421 case EVENT_STREAM_CONSOLE:
|
|
|
422 error ("Can't add consoles in -batch mode");
|
|
|
423 case EVENT_STREAM_READ:
|
|
|
424 error ("Can't read events in -batch mode");
|
|
|
425 default:
|
|
|
426 abort ();
|
|
|
427 }
|
|
|
428 }
|
|
|
429 else if (!event_stream)
|
|
|
430 {
|
|
|
431 error ("event-stream callbacks not initialized (internal error?)");
|
|
|
432 }
|
|
|
433 }
|
|
|
434
|
|
|
435 static int
|
|
|
436 event_stream_event_pending_p (int user)
|
|
|
437 {
|
|
|
438 return event_stream && event_stream->event_pending_p (user);
|
|
|
439 }
|
|
|
440
|
|
442
|
441 static void
|
|
|
442 event_stream_force_event_pending (struct frame* f)
|
|
|
443 {
|
|
|
444 if (event_stream->force_event_pending)
|
|
|
445 event_stream->force_event_pending (f);
|
|
|
446 }
|
|
|
447
|
|
428
|
448 static int
|
|
440
|
449 maybe_read_quit_event (Lisp_Event *event)
|
|
428
|
450 {
|
|
|
451 /* A C-g that came from `sigint_happened' will always come from the
|
|
|
452 controlling terminal. If that doesn't exist, however, then the
|
|
|
453 user manually sent us a SIGINT, and we pretend the C-g came from
|
|
|
454 the selected console. */
|
|
|
455 struct console *con;
|
|
|
456
|
|
|
457 if (CONSOLEP (Vcontrolling_terminal) &&
|
|
|
458 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
|
|
|
459 con = XCONSOLE (Vcontrolling_terminal);
|
|
|
460 else
|
|
|
461 con = XCONSOLE (Fselected_console ());
|
|
|
462
|
|
|
463 if (sigint_happened)
|
|
|
464 {
|
|
|
465 int ch = CONSOLE_QUIT_CHAR (con);
|
|
|
466 sigint_happened = 0;
|
|
|
467 Vquit_flag = Qnil;
|
|
|
468 character_to_event (ch, event, con, 1, 1);
|
|
|
469 event->channel = make_console (con);
|
|
|
470 return 1;
|
|
|
471 }
|
|
|
472 return 0;
|
|
|
473 }
|
|
|
474
|
|
|
475 void
|
|
440
|
476 event_stream_next_event (Lisp_Event *event)
|
|
428
|
477 {
|
|
|
478 Lisp_Object event_obj;
|
|
|
479
|
|
|
480 check_event_stream_ok (EVENT_STREAM_READ);
|
|
|
481
|
|
|
482 XSETEVENT (event_obj, event);
|
|
|
483 zero_event (event);
|
|
|
484 /* If C-g was pressed, treat it as a character to be read.
|
|
|
485 Note that if C-g was pressed while we were blocking,
|
|
|
486 the SIGINT signal handler will be called. It will
|
|
|
487 set Vquit_flag and write a byte on our "fake pipe",
|
|
|
488 which will unblock us. */
|
|
|
489 if (maybe_read_quit_event (event))
|
|
|
490 {
|
|
|
491 DEBUG_PRINT_EMACS_EVENT ("SIGINT", event_obj);
|
|
|
492 return;
|
|
|
493 }
|
|
|
494
|
|
|
495 /* If a longjmp() happens in the callback, we're screwed.
|
|
|
496 Let's hope it doesn't. I think the code here is fairly
|
|
|
497 clean and doesn't do this. */
|
|
|
498 emacs_is_blocking = 1;
|
|
|
499 event_stream->next_event_cb (event);
|
|
|
500 emacs_is_blocking = 0;
|
|
|
501
|
|
|
502 #ifdef DEBUG_XEMACS
|
|
|
503 /* timeout events have more info set later, so
|
|
|
504 print the event out in next_event_internal(). */
|
|
|
505 if (event->event_type != timeout_event)
|
|
|
506 DEBUG_PRINT_EMACS_EVENT ("real", event_obj);
|
|
|
507 #endif
|
|
|
508 maybe_kbd_translate (event_obj);
|
|
|
509 }
|
|
|
510
|
|
|
511 void
|
|
440
|
512 event_stream_handle_magic_event (Lisp_Event *event)
|
|
428
|
513 {
|
|
|
514 check_event_stream_ok (EVENT_STREAM_READ);
|
|
|
515 event_stream->handle_magic_event_cb (event);
|
|
|
516 }
|
|
|
517
|
|
|
518 static int
|
|
|
519 event_stream_add_timeout (EMACS_TIME timeout)
|
|
|
520 {
|
|
|
521 check_event_stream_ok (EVENT_STREAM_TIMEOUT);
|
|
|
522 return event_stream->add_timeout_cb (timeout);
|
|
|
523 }
|
|
|
524
|
|
|
525 static void
|
|
|
526 event_stream_remove_timeout (int id)
|
|
|
527 {
|
|
|
528 check_event_stream_ok (EVENT_STREAM_TIMEOUT);
|
|
|
529 event_stream->remove_timeout_cb (id);
|
|
|
530 }
|
|
|
531
|
|
|
532 void
|
|
|
533 event_stream_select_console (struct console *con)
|
|
|
534 {
|
|
|
535 check_event_stream_ok (EVENT_STREAM_CONSOLE);
|
|
|
536 if (!con->input_enabled)
|
|
|
537 {
|
|
|
538 event_stream->select_console_cb (con);
|
|
|
539 con->input_enabled = 1;
|
|
|
540 }
|
|
|
541 }
|
|
|
542
|
|
|
543 void
|
|
|
544 event_stream_unselect_console (struct console *con)
|
|
|
545 {
|
|
|
546 check_event_stream_ok (EVENT_STREAM_CONSOLE);
|
|
|
547 if (con->input_enabled)
|
|
|
548 {
|
|
|
549 event_stream->unselect_console_cb (con);
|
|
|
550 con->input_enabled = 0;
|
|
|
551 }
|
|
|
552 }
|
|
|
553
|
|
|
554 void
|
|
440
|
555 event_stream_select_process (Lisp_Process *proc)
|
|
428
|
556 {
|
|
|
557 check_event_stream_ok (EVENT_STREAM_PROCESS);
|
|
|
558 if (!get_process_selected_p (proc))
|
|
|
559 {
|
|
|
560 event_stream->select_process_cb (proc);
|
|
|
561 set_process_selected_p (proc, 1);
|
|
|
562 }
|
|
|
563 }
|
|
|
564
|
|
|
565 void
|
|
440
|
566 event_stream_unselect_process (Lisp_Process *proc)
|
|
428
|
567 {
|
|
|
568 check_event_stream_ok (EVENT_STREAM_PROCESS);
|
|
|
569 if (get_process_selected_p (proc))
|
|
|
570 {
|
|
|
571 event_stream->unselect_process_cb (proc);
|
|
|
572 set_process_selected_p (proc, 0);
|
|
|
573 }
|
|
|
574 }
|
|
|
575
|
|
|
576 USID
|
|
|
577 event_stream_create_stream_pair (void* inhandle, void* outhandle,
|
|
|
578 Lisp_Object* instream, Lisp_Object* outstream, int flags)
|
|
|
579 {
|
|
|
580 check_event_stream_ok (EVENT_STREAM_PROCESS);
|
|
|
581 return event_stream->create_stream_pair_cb
|
|
|
582 (inhandle, outhandle, instream, outstream, flags);
|
|
|
583 }
|
|
|
584
|
|
|
585 USID
|
|
|
586 event_stream_delete_stream_pair (Lisp_Object instream, Lisp_Object outstream)
|
|
|
587 {
|
|
|
588 check_event_stream_ok (EVENT_STREAM_PROCESS);
|
|
|
589 return event_stream->delete_stream_pair_cb (instream, outstream);
|
|
|
590 }
|
|
|
591
|
|
|
592 void
|
|
|
593 event_stream_quit_p (void)
|
|
|
594 {
|
|
|
595 if (event_stream)
|
|
|
596 event_stream->quit_p_cb ();
|
|
|
597 }
|
|
|
598
|
|
442
|
599 static int
|
|
|
600 event_stream_current_event_timestamp (struct console *c)
|
|
|
601 {
|
|
|
602 if (event_stream && event_stream->current_event_timestamp_cb)
|
|
|
603 return event_stream->current_event_timestamp_cb (c);
|
|
|
604 else
|
|
|
605 return 0;
|
|
|
606 }
|
|
428
|
607
|
|
|
608
|
|
|
609 /**********************************************************************/
|
|
|
610 /* Character prompting */
|
|
|
611 /**********************************************************************/
|
|
|
612
|
|
|
613 static void
|
|
|
614 echo_key_event (struct command_builder *command_builder,
|
|
|
615 Lisp_Object event)
|
|
|
616 {
|
|
|
617 /* This function can GC */
|
|
|
618 char buf[255];
|
|
|
619 Bytecount buf_index = command_builder->echo_buf_index;
|
|
|
620 Bufbyte *e;
|
|
|
621 Bytecount len;
|
|
|
622
|
|
|
623 if (buf_index < 0)
|
|
|
624 {
|
|
|
625 buf_index = 0; /* We're echoing now */
|
|
|
626 clear_echo_area (selected_frame (), Qnil, 0);
|
|
|
627 }
|
|
|
628
|
|
|
629 format_event_object (buf, XEVENT (event), 1);
|
|
|
630 len = strlen (buf);
|
|
|
631
|
|
|
632 if (len + buf_index + 4 > command_builder->echo_buf_length)
|
|
|
633 return;
|
|
|
634 e = command_builder->echo_buf + buf_index;
|
|
|
635 memcpy (e, buf, len);
|
|
|
636 e += len;
|
|
|
637
|
|
|
638 e[0] = ' ';
|
|
|
639 e[1] = '-';
|
|
|
640 e[2] = ' ';
|
|
|
641 e[3] = 0;
|
|
|
642
|
|
|
643 command_builder->echo_buf_index = buf_index + len + 1;
|
|
|
644 }
|
|
|
645
|
|
|
646 static void
|
|
|
647 regenerate_echo_keys_from_this_command_keys (struct command_builder *
|
|
|
648 builder)
|
|
|
649 {
|
|
|
650 Lisp_Object event;
|
|
|
651
|
|
|
652 builder->echo_buf_index = 0;
|
|
|
653
|
|
|
654 EVENT_CHAIN_LOOP (event, Vthis_command_keys)
|
|
|
655 echo_key_event (builder, event);
|
|
|
656 }
|
|
|
657
|
|
|
658 static void
|
|
|
659 maybe_echo_keys (struct command_builder *command_builder, int no_snooze)
|
|
|
660 {
|
|
|
661 /* This function can GC */
|
|
|
662 double echo_keystrokes;
|
|
|
663 struct frame *f = selected_frame ();
|
|
|
664 /* Message turns off echoing unless more keystrokes turn it on again. */
|
|
|
665 if (echo_area_active (f) && !EQ (Qcommand, echo_area_status (f)))
|
|
|
666 return;
|
|
|
667
|
|
|
668 if (INTP (Vecho_keystrokes) || FLOATP (Vecho_keystrokes))
|
|
|
669 echo_keystrokes = extract_float (Vecho_keystrokes);
|
|
|
670 else
|
|
|
671 echo_keystrokes = 0;
|
|
|
672
|
|
|
673 if (minibuf_level == 0
|
|
|
674 && echo_keystrokes > 0.0
|
|
442
|
675 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID)
|
|
|
676 && !x_kludge_lw_menu_active ()
|
|
|
677 #endif
|
|
|
678 )
|
|
428
|
679 {
|
|
|
680 if (!no_snooze)
|
|
|
681 {
|
|
|
682 /* #### C-g here will cause QUIT. Setting dont_check_for_quit
|
|
|
683 doesn't work. See check_quit. */
|
|
|
684 if (NILP (Fsit_for (Vecho_keystrokes, Qnil)))
|
|
|
685 /* input came in, so don't echo. */
|
|
|
686 return;
|
|
|
687 }
|
|
|
688
|
|
|
689 echo_area_message (f, command_builder->echo_buf, Qnil, 0,
|
|
|
690 /* not echo_buf_index. That doesn't include
|
|
|
691 the terminating " - ". */
|
|
|
692 strlen ((char *) command_builder->echo_buf),
|
|
|
693 Qcommand);
|
|
|
694 }
|
|
|
695 }
|
|
|
696
|
|
|
697 static void
|
|
|
698 reset_key_echo (struct command_builder *command_builder,
|
|
|
699 int remove_echo_area_echo)
|
|
|
700 {
|
|
|
701 /* This function can GC */
|
|
|
702 struct frame *f = selected_frame ();
|
|
|
703
|
|
|
704 command_builder->echo_buf_index = -1;
|
|
|
705
|
|
|
706 if (remove_echo_area_echo)
|
|
|
707 clear_echo_area (f, Qcommand, 0);
|
|
|
708 }
|
|
|
709
|
|
|
710
|
|
|
711 /**********************************************************************/
|
|
|
712 /* random junk */
|
|
|
713 /**********************************************************************/
|
|
|
714
|
|
|
715 static void
|
|
|
716 maybe_kbd_translate (Lisp_Object event)
|
|
|
717 {
|
|
|
718 Emchar c;
|
|
|
719 int did_translate = 0;
|
|
|
720
|
|
|
721 if (XEVENT_TYPE (event) != key_press_event)
|
|
|
722 return;
|
|
|
723 if (!HASH_TABLEP (Vkeyboard_translate_table))
|
|
|
724 return;
|
|
|
725 if (EQ (Fhash_table_count (Vkeyboard_translate_table), Qzero))
|
|
|
726 return;
|
|
|
727
|
|
|
728 c = event_to_character (XEVENT (event), 0, 0, 0);
|
|
|
729 if (c != -1)
|
|
|
730 {
|
|
|
731 Lisp_Object traduit = Fgethash (make_char (c), Vkeyboard_translate_table,
|
|
|
732 Qnil);
|
|
|
733 if (!NILP (traduit) && SYMBOLP (traduit))
|
|
|
734 {
|
|
|
735 XEVENT (event)->event.key.keysym = traduit;
|
|
|
736 XEVENT (event)->event.key.modifiers = 0;
|
|
|
737 did_translate = 1;
|
|
|
738 }
|
|
|
739 else if (CHARP (traduit))
|
|
|
740 {
|
|
440
|
741 Lisp_Event ev2;
|
|
428
|
742
|
|
|
743 /* This used to call Fcharacter_to_event() directly into EVENT,
|
|
|
744 but that can eradicate timestamps and other such stuff.
|
|
|
745 This way is safer. */
|
|
|
746 zero_event (&ev2);
|
|
|
747 character_to_event (XCHAR (traduit), &ev2,
|
|
|
748 XCONSOLE (EVENT_CHANNEL (XEVENT (event))), 1, 1);
|
|
|
749 XEVENT (event)->event.key.keysym = ev2.event.key.keysym;
|
|
|
750 XEVENT (event)->event.key.modifiers = ev2.event.key.modifiers;
|
|
|
751 did_translate = 1;
|
|
|
752 }
|
|
|
753 }
|
|
|
754
|
|
|
755 if (!did_translate)
|
|
|
756 {
|
|
|
757 Lisp_Object traduit = Fgethash (XEVENT (event)->event.key.keysym,
|
|
|
758 Vkeyboard_translate_table, Qnil);
|
|
|
759 if (!NILP (traduit) && SYMBOLP (traduit))
|
|
|
760 {
|
|
|
761 XEVENT (event)->event.key.keysym = traduit;
|
|
|
762 did_translate = 1;
|
|
|
763 }
|
|
442
|
764 else if (CHARP (traduit))
|
|
|
765 {
|
|
|
766 Lisp_Event ev2;
|
|
|
767
|
|
|
768 zero_event (&ev2);
|
|
|
769 character_to_event (XCHAR (traduit), &ev2,
|
|
|
770 XCONSOLE (EVENT_CHANNEL (XEVENT (event))), 1, 1);
|
|
|
771 XEVENT (event)->event.key.keysym = ev2.event.key.keysym;
|
|
|
772 XEVENT (event)->event.key.modifiers |= ev2.event.key.modifiers;
|
|
|
773 did_translate = 1;
|
|
|
774 }
|
|
428
|
775 }
|
|
|
776
|
|
|
777 #ifdef DEBUG_XEMACS
|
|
|
778 if (did_translate)
|
|
|
779 DEBUG_PRINT_EMACS_EVENT ("->keyboard-translate-table", event);
|
|
|
780 #endif
|
|
|
781 }
|
|
|
782
|
|
|
783 /* NB: The following auto-save stuff is in keyboard.c in FSFmacs, and
|
|
|
784 keystrokes_since_auto_save is equivalent to the difference between
|
|
|
785 num_nonmacro_input_chars and last_auto_save. */
|
|
|
786
|
|
444
|
787 /* When an auto-save happens, record the number of keystrokes, and
|
|
|
788 don't do again soon. */
|
|
428
|
789
|
|
|
790 void
|
|
|
791 record_auto_save (void)
|
|
|
792 {
|
|
|
793 keystrokes_since_auto_save = 0;
|
|
|
794 }
|
|
|
795
|
|
|
796 /* Make an auto save happen as soon as possible at command level. */
|
|
|
797
|
|
|
798 void
|
|
|
799 force_auto_save_soon (void)
|
|
|
800 {
|
|
|
801 keystrokes_since_auto_save = 1 + max (auto_save_interval, 20);
|
|
|
802 }
|
|
|
803
|
|
|
804 static void
|
|
|
805 maybe_do_auto_save (void)
|
|
|
806 {
|
|
|
807 /* This function can call lisp */
|
|
|
808 keystrokes_since_auto_save++;
|
|
|
809 if (auto_save_interval > 0 &&
|
|
|
810 keystrokes_since_auto_save > max (auto_save_interval, 20) &&
|
|
|
811 !detect_input_pending ())
|
|
|
812 {
|
|
|
813 Fdo_auto_save (Qnil, Qnil);
|
|
|
814 record_auto_save ();
|
|
|
815 }
|
|
|
816 }
|
|
|
817
|
|
|
818 static Lisp_Object
|
|
|
819 print_help (Lisp_Object object)
|
|
|
820 {
|
|
|
821 Fprinc (object, Qnil);
|
|
|
822 return Qnil;
|
|
|
823 }
|
|
|
824
|
|
|
825 static void
|
|
|
826 execute_help_form (struct command_builder *command_builder,
|
|
|
827 Lisp_Object event)
|
|
|
828 {
|
|
|
829 /* This function can GC */
|
|
|
830 Lisp_Object help = Qnil;
|
|
|
831 int speccount = specpdl_depth ();
|
|
|
832 Bytecount buf_index = command_builder->echo_buf_index;
|
|
|
833 Lisp_Object echo = ((buf_index <= 0)
|
|
|
834 ? Qnil
|
|
|
835 : make_string (command_builder->echo_buf,
|
|
|
836 buf_index));
|
|
|
837 struct gcpro gcpro1, gcpro2;
|
|
|
838 GCPRO2 (echo, help);
|
|
|
839
|
|
|
840 record_unwind_protect (save_window_excursion_unwind,
|
|
|
841 Fcurrent_window_configuration (Qnil));
|
|
|
842 reset_key_echo (command_builder, 1);
|
|
|
843
|
|
|
844 help = Feval (Vhelp_form);
|
|
|
845 if (STRINGP (help))
|
|
|
846 internal_with_output_to_temp_buffer (build_string ("*Help*"),
|
|
|
847 print_help, help, Qnil);
|
|
|
848 Fnext_command_event (event, Qnil);
|
|
|
849 /* Remove the help from the frame */
|
|
|
850 unbind_to (speccount, Qnil);
|
|
|
851 /* Hmmmm. Tricky. The unbind restores an old window configuration,
|
|
|
852 apparently bypassing any setting of windows_structure_changed.
|
|
|
853 So we need to set it so that things get redrawn properly. */
|
|
|
854 /* #### This is massive overkill. Look at doing it better once the
|
|
|
855 new redisplay is fully in place. */
|
|
|
856 {
|
|
|
857 Lisp_Object frmcons, devcons, concons;
|
|
|
858 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
|
|
|
859 {
|
|
|
860 struct frame *f = XFRAME (XCAR (frmcons));
|
|
|
861 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
|
|
|
862 }
|
|
|
863 }
|
|
|
864
|
|
|
865 redisplay ();
|
|
|
866 if (event_matches_key_specifier_p (XEVENT (event), make_char (' ')))
|
|
|
867 {
|
|
|
868 /* Discard next key if it is a space */
|
|
|
869 reset_key_echo (command_builder, 1);
|
|
|
870 Fnext_command_event (event, Qnil);
|
|
|
871 }
|
|
|
872
|
|
|
873 command_builder->echo_buf_index = buf_index;
|
|
|
874 if (buf_index > 0)
|
|
|
875 memcpy (command_builder->echo_buf,
|
|
|
876 XSTRING_DATA (echo), buf_index + 1); /* terminating 0 */
|
|
|
877 UNGCPRO;
|
|
|
878 }
|
|
|
879
|
|
|
880
|
|
|
881 /**********************************************************************/
|
|
|
882 /* input pending */
|
|
|
883 /**********************************************************************/
|
|
|
884
|
|
|
885 int
|
|
|
886 detect_input_pending (void)
|
|
|
887 {
|
|
|
888 /* Always call the event_pending_p hook even if there's an unread
|
|
|
889 character, because that might do some needed ^G detection (on
|
|
|
890 systems without SIGIO, for example).
|
|
|
891 */
|
|
|
892 if (event_stream_event_pending_p (1))
|
|
|
893 return 1;
|
|
|
894 if (!NILP (Vunread_command_events) || !NILP (Vunread_command_event))
|
|
|
895 return 1;
|
|
|
896 if (!NILP (command_event_queue))
|
|
|
897 {
|
|
|
898 Lisp_Object event;
|
|
|
899
|
|
|
900 EVENT_CHAIN_LOOP (event, command_event_queue)
|
|
|
901 {
|
|
|
902 if (XEVENT_TYPE (event) != eval_event
|
|
|
903 && XEVENT_TYPE (event) != magic_eval_event)
|
|
|
904 return 1;
|
|
|
905 }
|
|
|
906 }
|
|
|
907 return 0;
|
|
|
908 }
|
|
|
909
|
|
|
910 DEFUN ("input-pending-p", Finput_pending_p, 0, 0, 0, /*
|
|
|
911 Return t if command input is currently available with no waiting.
|
|
|
912 Actually, the value is nil only if we can be sure that no input is available.
|
|
|
913 */
|
|
|
914 ())
|
|
|
915 {
|
|
|
916 return detect_input_pending () ? Qt : Qnil;
|
|
|
917 }
|
|
|
918
|
|
|
919
|
|
|
920 /**********************************************************************/
|
|
|
921 /* timeouts */
|
|
|
922 /**********************************************************************/
|
|
|
923
|
|
|
924 /**** Low-level timeout functions. ****
|
|
|
925
|
|
|
926 These functions maintain a sorted list of one-shot timeouts (where
|
|
|
927 the timeouts are in absolute time). They are intended for use by
|
|
|
928 functions that need to convert a list of absolute timeouts into a
|
|
|
929 series of intervals to wait for. */
|
|
|
930
|
|
|
931 /* We ensure that 0 is never a valid ID, so that a value of 0 can be
|
|
|
932 used to indicate an absence of a timer. */
|
|
|
933 static int low_level_timeout_id_tick;
|
|
|
934
|
|
|
935 static struct low_level_timeout_blocktype
|
|
|
936 {
|
|
|
937 Blocktype_declare (struct low_level_timeout);
|
|
|
938 } *the_low_level_timeout_blocktype;
|
|
|
939
|
|
|
940 /* Add a one-shot timeout at time TIME to TIMEOUT_LIST. Return
|
|
|
941 a unique ID identifying the timeout. */
|
|
|
942
|
|
|
943 int
|
|
|
944 add_low_level_timeout (struct low_level_timeout **timeout_list,
|
|
|
945 EMACS_TIME thyme)
|
|
|
946 {
|
|
|
947 struct low_level_timeout *tm;
|
|
|
948 struct low_level_timeout *t, **tt;
|
|
|
949
|
|
|
950 /* Allocate a new time struct. */
|
|
|
951
|
|
|
952 tm = Blocktype_alloc (the_low_level_timeout_blocktype);
|
|
|
953 tm->next = NULL;
|
|
|
954 if (low_level_timeout_id_tick == 0)
|
|
|
955 low_level_timeout_id_tick++;
|
|
|
956 tm->id = low_level_timeout_id_tick++;
|
|
|
957 tm->time = thyme;
|
|
|
958
|
|
|
959 /* Add it to the queue. */
|
|
|
960
|
|
|
961 tt = timeout_list;
|
|
|
962 t = *tt;
|
|
|
963 while (t && EMACS_TIME_EQUAL_OR_GREATER (tm->time, t->time))
|
|
|
964 {
|
|
|
965 tt = &t->next;
|
|
|
966 t = *tt;
|
|
|
967 }
|
|
|
968 tm->next = t;
|
|
|
969 *tt = tm;
|
|
|
970
|
|
|
971 return tm->id;
|
|
|
972 }
|
|
|
973
|
|
|
974 /* Remove the low-level timeout identified by ID from TIMEOUT_LIST.
|
|
|
975 If the timeout is not there, do nothing. */
|
|
|
976
|
|
|
977 void
|
|
|
978 remove_low_level_timeout (struct low_level_timeout **timeout_list, int id)
|
|
|
979 {
|
|
|
980 struct low_level_timeout *t, *prev;
|
|
|
981
|
|
|
982 /* find it */
|
|
|
983
|
|
|
984 for (t = *timeout_list, prev = NULL; t && t->id != id; t = t->next)
|
|
|
985 prev = t;
|
|
|
986
|
|
|
987 if (!t)
|
|
|
988 return; /* couldn't find it */
|
|
|
989
|
|
|
990 if (!prev)
|
|
|
991 *timeout_list = t->next;
|
|
|
992 else prev->next = t->next;
|
|
|
993
|
|
|
994 Blocktype_free (the_low_level_timeout_blocktype, t);
|
|
|
995 }
|
|
|
996
|
|
|
997 /* If there are timeouts on TIMEOUT_LIST, store the relative time
|
|
|
998 interval to the first timeout on the list into INTERVAL and
|
|
|
999 return 1. Otherwise, return 0. */
|
|
|
1000
|
|
|
1001 int
|
|
|
1002 get_low_level_timeout_interval (struct low_level_timeout *timeout_list,
|
|
|
1003 EMACS_TIME *interval)
|
|
|
1004 {
|
|
|
1005 if (!timeout_list) /* no timer events; block indefinitely */
|
|
|
1006 return 0;
|
|
|
1007 else
|
|
|
1008 {
|
|
|
1009 EMACS_TIME current_time;
|
|
|
1010
|
|
|
1011 /* The time to block is the difference between the first
|
|
|
1012 (earliest) timer on the queue and the current time.
|
|
|
1013 If that is negative, then the timer will fire immediately
|
|
|
1014 but we still have to call select(), with a zero-valued
|
|
|
1015 timeout: user events must have precedence over timer events. */
|
|
|
1016 EMACS_GET_TIME (current_time);
|
|
|
1017 if (EMACS_TIME_GREATER (timeout_list->time, current_time))
|
|
|
1018 EMACS_SUB_TIME (*interval, timeout_list->time,
|
|
|
1019 current_time);
|
|
|
1020 else
|
|
|
1021 EMACS_SET_SECS_USECS (*interval, 0, 0);
|
|
|
1022 return 1;
|
|
|
1023 }
|
|
|
1024 }
|
|
|
1025
|
|
|
1026 /* Pop the first (i.e. soonest) timeout off of TIMEOUT_LIST and return
|
|
|
1027 its ID. Also, if TIME_OUT is not 0, store the absolute time of the
|
|
|
1028 timeout into TIME_OUT. */
|
|
|
1029
|
|
|
1030 int
|
|
|
1031 pop_low_level_timeout (struct low_level_timeout **timeout_list,
|
|
|
1032 EMACS_TIME *time_out)
|
|
|
1033 {
|
|
|
1034 struct low_level_timeout *tm = *timeout_list;
|
|
|
1035 int id;
|
|
|
1036
|
|
|
1037 assert (tm);
|
|
|
1038 id = tm->id;
|
|
|
1039 if (time_out)
|
|
|
1040 *time_out = tm->time;
|
|
|
1041 *timeout_list = tm->next;
|
|
|
1042 Blocktype_free (the_low_level_timeout_blocktype, tm);
|
|
|
1043 return id;
|
|
|
1044 }
|
|
|
1045
|
|
|
1046
|
|
|
1047 /**** High-level timeout functions. ****/
|
|
|
1048
|
|
|
1049 static int timeout_id_tick;
|
|
|
1050
|
|
|
1051 static Lisp_Object pending_timeout_list, pending_async_timeout_list;
|
|
|
1052
|
|
|
1053 static Lisp_Object Vtimeout_free_list;
|
|
|
1054
|
|
|
1055 static Lisp_Object
|
|
|
1056 mark_timeout (Lisp_Object obj)
|
|
|
1057 {
|
|
440
|
1058 Lisp_Timeout *tm = XTIMEOUT (obj);
|
|
428
|
1059 mark_object (tm->function);
|
|
|
1060 return tm->object;
|
|
|
1061 }
|
|
|
1062
|
|
|
1063 /* Should never, ever be called. (except by an external debugger) */
|
|
|
1064 static void
|
|
|
1065 print_timeout (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
|
|
|
1066 {
|
|
442
|
1067 const Lisp_Timeout *t = XTIMEOUT (obj);
|
|
428
|
1068 char buf[64];
|
|
|
1069
|
|
|
1070 sprintf (buf, "#<INTERNAL OBJECT (XEmacs bug?) (timeout) 0x%lx>",
|
|
|
1071 (unsigned long) t);
|
|
|
1072 write_c_string (buf, printcharfun);
|
|
|
1073 }
|
|
|
1074
|
|
|
1075 static const struct lrecord_description timeout_description[] = {
|
|
440
|
1076 { XD_LISP_OBJECT, offsetof (Lisp_Timeout, function) },
|
|
|
1077 { XD_LISP_OBJECT, offsetof (Lisp_Timeout, object) },
|
|
428
|
1078 { XD_END }
|
|
|
1079 };
|
|
|
1080
|
|
|
1081 DEFINE_LRECORD_IMPLEMENTATION ("timeout", timeout,
|
|
|
1082 mark_timeout, print_timeout,
|
|
440
|
1083 0, 0, 0, timeout_description, Lisp_Timeout);
|
|
428
|
1084
|
|
|
1085 /* Generate a timeout and return its ID. */
|
|
|
1086
|
|
|
1087 int
|
|
|
1088 event_stream_generate_wakeup (unsigned int milliseconds,
|
|
|
1089 unsigned int vanilliseconds,
|
|
|
1090 Lisp_Object function, Lisp_Object object,
|
|
|
1091 int async_p)
|
|
|
1092 {
|
|
|
1093 Lisp_Object op = allocate_managed_lcrecord (Vtimeout_free_list);
|
|
440
|
1094 Lisp_Timeout *timeout = XTIMEOUT (op);
|
|
428
|
1095 EMACS_TIME current_time;
|
|
|
1096 EMACS_TIME interval;
|
|
|
1097
|
|
|
1098 timeout->id = timeout_id_tick++;
|
|
|
1099 timeout->resignal_msecs = vanilliseconds;
|
|
|
1100 timeout->function = function;
|
|
|
1101 timeout->object = object;
|
|
|
1102
|
|
|
1103 EMACS_GET_TIME (current_time);
|
|
|
1104 EMACS_SET_SECS_USECS (interval, milliseconds / 1000,
|
|
|
1105 1000 * (milliseconds % 1000));
|
|
|
1106 EMACS_ADD_TIME (timeout->next_signal_time, current_time, interval);
|
|
|
1107
|
|
|
1108 if (async_p)
|
|
|
1109 {
|
|
|
1110 timeout->interval_id =
|
|
|
1111 event_stream_add_async_timeout (timeout->next_signal_time);
|
|
|
1112 pending_async_timeout_list = noseeum_cons (op,
|
|
|
1113 pending_async_timeout_list);
|
|
|
1114 }
|
|
|
1115 else
|
|
|
1116 {
|
|
|
1117 timeout->interval_id =
|
|
|
1118 event_stream_add_timeout (timeout->next_signal_time);
|
|
|
1119 pending_timeout_list = noseeum_cons (op, pending_timeout_list);
|
|
|
1120 }
|
|
|
1121 return timeout->id;
|
|
|
1122 }
|
|
|
1123
|
|
|
1124 /* Given the INTERVAL-ID of a timeout just signalled, resignal the timeout
|
|
|
1125 as necessary and return the timeout's ID and function and object slots.
|
|
|
1126
|
|
|
1127 This should be called as a result of receiving notice that a timeout
|
|
|
1128 has fired. INTERVAL-ID is *not* the timeout's ID, but is the ID that
|
|
|
1129 identifies this particular firing of the timeout. INTERVAL-ID's and
|
|
|
1130 timeout ID's are in separate number spaces and bear no relation to
|
|
|
1131 each other. The INTERVAL-ID is all that the event callback routines
|
|
|
1132 work with: they work only with one-shot intervals, not with timeouts
|
|
|
1133 that may fire repeatedly.
|
|
|
1134
|
|
|
1135 NOTE: The returned FUNCTION and OBJECT are *not* GC-protected at all.
|
|
|
1136 */
|
|
|
1137
|
|
|
1138 static int
|
|
|
1139 event_stream_resignal_wakeup (int interval_id, int async_p,
|
|
|
1140 Lisp_Object *function, Lisp_Object *object)
|
|
|
1141 {
|
|
|
1142 Lisp_Object op = Qnil, rest;
|
|
440
|
1143 Lisp_Timeout *timeout;
|
|
428
|
1144 Lisp_Object *timeout_list;
|
|
|
1145 struct gcpro gcpro1;
|
|
|
1146 int id;
|
|
|
1147
|
|
|
1148 GCPRO1 (op); /* just in case ... because it's removed from the list
|
|
|
1149 for awhile. */
|
|
|
1150
|
|
|
1151 timeout_list = async_p ? &pending_async_timeout_list : &pending_timeout_list;
|
|
|
1152
|
|
|
1153 /* Find the timeout on the list of pending ones. */
|
|
|
1154 LIST_LOOP (rest, *timeout_list)
|
|
|
1155 {
|
|
|
1156 timeout = XTIMEOUT (XCAR (rest));
|
|
|
1157 if (timeout->interval_id == interval_id)
|
|
|
1158 break;
|
|
|
1159 }
|
|
|
1160
|
|
|
1161 assert (!NILP (rest));
|
|
|
1162 op = XCAR (rest);
|
|
|
1163 timeout = XTIMEOUT (op);
|
|
|
1164 /* We make sure to snarf the data out of the timeout object before
|
|
|
1165 we free it with free_managed_lcrecord(). */
|
|
|
1166 id = timeout->id;
|
|
|
1167 *function = timeout->function;
|
|
|
1168 *object = timeout->object;
|
|
|
1169
|
|
|
1170 /* Remove this one from the list of pending timeouts */
|
|
|
1171 *timeout_list = delq_no_quit_and_free_cons (op, *timeout_list);
|
|
|
1172
|
|
|
1173 /* If this timeout wants to be resignalled, do it now. */
|
|
|
1174 if (timeout->resignal_msecs)
|
|
|
1175 {
|
|
|
1176 EMACS_TIME current_time;
|
|
|
1177 EMACS_TIME interval;
|
|
|
1178
|
|
|
1179 /* Determine the time that the next resignalling should occur.
|
|
|
1180 We do that by adding the interval time to the last signalled
|
|
|
1181 time until we get a time that's current.
|
|
|
1182
|
|
|
1183 (This way, it doesn't matter if the timeout was signalled
|
|
|
1184 exactly when we asked for it, or at some time later.)
|
|
|
1185 */
|
|
|
1186 EMACS_GET_TIME (current_time);
|
|
|
1187 EMACS_SET_SECS_USECS (interval, timeout->resignal_msecs / 1000,
|
|
|
1188 1000 * (timeout->resignal_msecs % 1000));
|
|
|
1189 do
|
|
|
1190 {
|
|
|
1191 EMACS_ADD_TIME (timeout->next_signal_time, timeout->next_signal_time,
|
|
|
1192 interval);
|
|
|
1193 } while (EMACS_TIME_GREATER (current_time, timeout->next_signal_time));
|
|
|
1194
|
|
|
1195 if (async_p)
|
|
|
1196 timeout->interval_id =
|
|
|
1197 event_stream_add_async_timeout (timeout->next_signal_time);
|
|
|
1198 else
|
|
|
1199 timeout->interval_id =
|
|
|
1200 event_stream_add_timeout (timeout->next_signal_time);
|
|
|
1201 /* Add back onto the list. Note that the effect of this
|
|
|
1202 is to move frequently-hit timeouts to the front of the
|
|
|
1203 list, which is a good thing. */
|
|
|
1204 *timeout_list = noseeum_cons (op, *timeout_list);
|
|
|
1205 }
|
|
|
1206 else
|
|
|
1207 free_managed_lcrecord (Vtimeout_free_list, op);
|
|
|
1208
|
|
|
1209 UNGCPRO;
|
|
|
1210 return id;
|
|
|
1211 }
|
|
|
1212
|
|
|
1213 void
|
|
|
1214 event_stream_disable_wakeup (int id, int async_p)
|
|
|
1215 {
|
|
440
|
1216 Lisp_Timeout *timeout = 0;
|
|
428
|
1217 Lisp_Object rest;
|
|
|
1218 Lisp_Object *timeout_list;
|
|
|
1219
|
|
|
1220 if (async_p)
|
|
|
1221 timeout_list = &pending_async_timeout_list;
|
|
|
1222 else
|
|
|
1223 timeout_list = &pending_timeout_list;
|
|
|
1224
|
|
|
1225 /* Find the timeout on the list of pending ones, if it's still there. */
|
|
|
1226 LIST_LOOP (rest, *timeout_list)
|
|
|
1227 {
|
|
|
1228 timeout = XTIMEOUT (XCAR (rest));
|
|
|
1229 if (timeout->id == id)
|
|
|
1230 break;
|
|
|
1231 }
|
|
|
1232
|
|
|
1233 /* If we found it, remove it from the list and disable the pending
|
|
|
1234 one-shot. */
|
|
|
1235 if (!NILP (rest))
|
|
|
1236 {
|
|
|
1237 Lisp_Object op = XCAR (rest);
|
|
|
1238 *timeout_list =
|
|
|
1239 delq_no_quit_and_free_cons (op, *timeout_list);
|
|
|
1240 if (async_p)
|
|
|
1241 event_stream_remove_async_timeout (timeout->interval_id);
|
|
|
1242 else
|
|
|
1243 event_stream_remove_timeout (timeout->interval_id);
|
|
|
1244 free_managed_lcrecord (Vtimeout_free_list, op);
|
|
|
1245 }
|
|
|
1246 }
|
|
|
1247
|
|
|
1248 static int
|
|
|
1249 event_stream_wakeup_pending_p (int id, int async_p)
|
|
|
1250 {
|
|
440
|
1251 Lisp_Timeout *timeout;
|
|
428
|
1252 Lisp_Object rest;
|
|
|
1253 Lisp_Object timeout_list;
|
|
|
1254 int found = 0;
|
|
|
1255
|
|
|
1256
|
|
|
1257 if (async_p)
|
|
|
1258 timeout_list = pending_async_timeout_list;
|
|
|
1259 else
|
|
|
1260 timeout_list = pending_timeout_list;
|
|
|
1261
|
|
|
1262 /* Find the element on the list of pending ones, if it's still there. */
|
|
|
1263 LIST_LOOP (rest, timeout_list)
|
|
|
1264 {
|
|
|
1265 timeout = XTIMEOUT (XCAR (rest));
|
|
|
1266 if (timeout->id == id)
|
|
|
1267 {
|
|
|
1268 found = 1;
|
|
|
1269 break;
|
|
|
1270 }
|
|
|
1271 }
|
|
|
1272
|
|
|
1273 return found;
|
|
|
1274 }
|
|
|
1275
|
|
|
1276
|
|
|
1277 /**** Asynch. timeout functions (see also signal.c) ****/
|
|
|
1278
|
|
|
1279 #if !defined (SIGIO) && !defined (DONT_POLL_FOR_QUIT)
|
|
|
1280 extern int poll_for_quit_id;
|
|
|
1281 #endif
|
|
|
1282
|
|
|
1283 #if defined(HAVE_UNIX_PROCESSES) && !defined(SIGCHLD)
|
|
|
1284 extern int poll_for_sigchld_id;
|
|
|
1285 #endif
|
|
|
1286
|
|
|
1287 void
|
|
|
1288 event_stream_deal_with_async_timeout (int interval_id)
|
|
|
1289 {
|
|
|
1290 /* This function can GC */
|
|
|
1291 Lisp_Object humpty, dumpty;
|
|
|
1292 #if ((!defined (SIGIO) && !defined (DONT_POLL_FOR_QUIT)) \
|
|
|
1293 || defined(HAVE_UNIX_PROCESSES) && !defined(SIGCHLD))
|
|
|
1294 int id =
|
|
|
1295 #endif
|
|
|
1296 event_stream_resignal_wakeup (interval_id, 1, &humpty, &dumpty);
|
|
|
1297
|
|
|
1298 #if !defined (SIGIO) && !defined (DONT_POLL_FOR_QUIT)
|
|
|
1299 if (id == poll_for_quit_id)
|
|
|
1300 {
|
|
|
1301 quit_check_signal_happened = 1;
|
|
|
1302 quit_check_signal_tick_count++;
|
|
|
1303 return;
|
|
|
1304 }
|
|
|
1305 #endif
|
|
|
1306
|
|
|
1307 #if defined(HAVE_UNIX_PROCESSES) && !defined(SIGCHLD)
|
|
|
1308 if (id == poll_for_sigchld_id)
|
|
|
1309 {
|
|
|
1310 kick_status_notify ();
|
|
|
1311 return;
|
|
|
1312 }
|
|
|
1313 #endif
|
|
|
1314
|
|
|
1315 /* call1 GC-protects its arguments */
|
|
|
1316 call1_trapping_errors ("Error in asynchronous timeout callback",
|
|
|
1317 humpty, dumpty);
|
|
|
1318 }
|
|
|
1319
|
|
|
1320
|
|
|
1321 /**** Lisp-level timeout functions. ****/
|
|
|
1322
|
|
|
1323 static unsigned long
|
|
|
1324 lisp_number_to_milliseconds (Lisp_Object secs, int allow_0)
|
|
|
1325 {
|
|
|
1326 #ifdef LISP_FLOAT_TYPE
|
|
|
1327 double fsecs;
|
|
|
1328 CHECK_INT_OR_FLOAT (secs);
|
|
|
1329 fsecs = XFLOATINT (secs);
|
|
|
1330 #else
|
|
|
1331 long fsecs;
|
|
|
1332 CHECK_INT (secs);
|
|
|
1333 fsecs = XINT (secs);
|
|
|
1334 #endif
|
|
|
1335 if (fsecs < 0)
|
|
|
1336 signal_simple_error ("timeout is negative", secs);
|
|
|
1337 if (!allow_0 && fsecs == 0)
|
|
|
1338 signal_simple_error ("timeout is non-positive", secs);
|
|
|
1339 if (fsecs >= (((unsigned int) 0xFFFFFFFF) / 1000))
|
|
|
1340 signal_simple_error
|
|
|
1341 ("timeout would exceed 32 bits when represented in milliseconds", secs);
|
|
|
1342
|
|
|
1343 return (unsigned long) (1000 * fsecs);
|
|
|
1344 }
|
|
|
1345
|
|
|
1346 DEFUN ("add-timeout", Fadd_timeout, 3, 4, 0, /*
|
|
|
1347 Add a timeout, to be signaled after the timeout period has elapsed.
|
|
|
1348 SECS is a number of seconds, expressed as an integer or a float.
|
|
|
1349 FUNCTION will be called after that many seconds have elapsed, with one
|
|
|
1350 argument, the given OBJECT. If the optional RESIGNAL argument is provided,
|
|
|
1351 then after this timeout expires, `add-timeout' will automatically be called
|
|
|
1352 again with RESIGNAL as the first argument.
|
|
|
1353
|
|
|
1354 This function returns an object which is the id number of this particular
|
|
|
1355 timeout. You can pass that object to `disable-timeout' to turn off the
|
|
|
1356 timeout before it has been signalled.
|
|
|
1357
|
|
|
1358 NOTE: Id numbers as returned by this function are in a distinct namespace
|
|
|
1359 from those returned by `add-async-timeout'. This means that the same id
|
|
|
1360 number could refer to a pending synchronous timeout and a different pending
|
|
|
1361 asynchronous timeout, and that you cannot pass an id from `add-timeout'
|
|
|
1362 to `disable-async-timeout', or vice-versa.
|
|
|
1363
|
|
|
1364 The number of seconds may be expressed as a floating-point number, in which
|
|
|
1365 case some fractional part of a second will be used. Caveat: the usable
|
|
|
1366 timeout granularity will vary from system to system.
|
|
|
1367
|
|
|
1368 Adding a timeout causes a timeout event to be returned by `next-event', and
|
|
|
1369 the function will be invoked by `dispatch-event,' so if emacs is in a tight
|
|
|
1370 loop, the function will not be invoked until the next call to sit-for or
|
|
|
1371 until the return to top-level (the same is true of process filters).
|
|
|
1372
|
|
|
1373 If you need to have a timeout executed even when XEmacs is in the midst of
|
|
|
1374 running Lisp code, use `add-async-timeout'.
|
|
|
1375
|
|
|
1376 WARNING: if you are thinking of calling add-timeout from inside of a
|
|
|
1377 callback function as a way of resignalling a timeout, think again. There
|
|
|
1378 is a race condition. That's why the RESIGNAL argument exists.
|
|
|
1379 */
|
|
|
1380 (secs, function, object, resignal))
|
|
|
1381 {
|
|
|
1382 unsigned long msecs = lisp_number_to_milliseconds (secs, 0);
|
|
|
1383 unsigned long msecs2 = (NILP (resignal) ? 0 :
|
|
|
1384 lisp_number_to_milliseconds (resignal, 0));
|
|
|
1385 int id;
|
|
|
1386 Lisp_Object lid;
|
|
|
1387 id = event_stream_generate_wakeup (msecs, msecs2, function, object, 0);
|
|
|
1388 lid = make_int (id);
|
|
|
1389 if (id != XINT (lid)) abort ();
|
|
|
1390 return lid;
|
|
|
1391 }
|
|
|
1392
|
|
|
1393 DEFUN ("disable-timeout", Fdisable_timeout, 1, 1, 0, /*
|
|
|
1394 Disable a timeout from signalling any more.
|
|
|
1395 ID should be a timeout id number as returned by `add-timeout'. If ID
|
|
|
1396 corresponds to a one-shot timeout that has already signalled, nothing
|
|
|
1397 will happen.
|
|
|
1398
|
|
|
1399 It will not work to call this function on an id number returned by
|
|
|
1400 `add-async-timeout'. Use `disable-async-timeout' for that.
|
|
|
1401 */
|
|
|
1402 (id))
|
|
|
1403 {
|
|
|
1404 CHECK_INT (id);
|
|
|
1405 event_stream_disable_wakeup (XINT (id), 0);
|
|
|
1406 return Qnil;
|
|
|
1407 }
|
|
|
1408
|
|
|
1409 DEFUN ("add-async-timeout", Fadd_async_timeout, 3, 4, 0, /*
|
|
|
1410 Add an asynchronous timeout, to be signaled after an interval has elapsed.
|
|
|
1411 SECS is a number of seconds, expressed as an integer or a float.
|
|
|
1412 FUNCTION will be called after that many seconds have elapsed, with one
|
|
|
1413 argument, the given OBJECT. If the optional RESIGNAL argument is provided,
|
|
|
1414 then after this timeout expires, `add-async-timeout' will automatically be
|
|
|
1415 called again with RESIGNAL as the first argument.
|
|
|
1416
|
|
|
1417 This function returns an object which is the id number of this particular
|
|
|
1418 timeout. You can pass that object to `disable-async-timeout' to turn off
|
|
|
1419 the timeout before it has been signalled.
|
|
|
1420
|
|
|
1421 NOTE: Id numbers as returned by this function are in a distinct namespace
|
|
|
1422 from those returned by `add-timeout'. This means that the same id number
|
|
|
1423 could refer to a pending synchronous timeout and a different pending
|
|
|
1424 asynchronous timeout, and that you cannot pass an id from
|
|
|
1425 `add-async-timeout' to `disable-timeout', or vice-versa.
|
|
|
1426
|
|
|
1427 The number of seconds may be expressed as a floating-point number, in which
|
|
|
1428 case some fractional part of a second will be used. Caveat: the usable
|
|
|
1429 timeout granularity will vary from system to system.
|
|
|
1430
|
|
|
1431 Adding an asynchronous timeout causes the function to be invoked as soon
|
|
|
1432 as the timeout occurs, even if XEmacs is in the midst of executing some
|
|
|
1433 other code. (This is unlike the synchronous timeouts added with
|
|
|
1434 `add-timeout', where the timeout will only be signalled when XEmacs is
|
|
|
1435 waiting for events, i.e. the next return to top-level or invocation of
|
|
|
1436 `sit-for' or related functions.) This means that the function that is
|
|
|
1437 called *must* not signal an error or change any global state (e.g. switch
|
|
|
1438 buffers or windows) except when locking code is in place to make sure
|
|
|
1439 that race conditions don't occur in the interaction between the
|
|
|
1440 asynchronous timeout function and other code.
|
|
|
1441
|
|
|
1442 Under most circumstances, you should use `add-timeout' instead, as it is
|
|
|
1443 much safer. Asynchronous timeouts should only be used when such behavior
|
|
|
1444 is really necessary.
|
|
|
1445
|
|
|
1446 Asynchronous timeouts are blocked and will not occur when `inhibit-quit'
|
|
|
1447 is non-nil. As soon as `inhibit-quit' becomes nil again, any pending
|
|
|
1448 asynchronous timeouts will get called immediately. (Multiple occurrences
|
|
|
1449 of the same asynchronous timeout are not queued, however.) While the
|
|
|
1450 callback function of an asynchronous timeout is invoked, `inhibit-quit'
|
|
|
1451 is automatically bound to non-nil, and thus other asynchronous timeouts
|
|
|
1452 will be blocked unless the callback function explicitly sets `inhibit-quit'
|
|
|
1453 to nil.
|
|
|
1454
|
|
|
1455 WARNING: if you are thinking of calling `add-async-timeout' from inside of a
|
|
|
1456 callback function as a way of resignalling a timeout, think again. There
|
|
|
1457 is a race condition. That's why the RESIGNAL argument exists.
|
|
|
1458 */
|
|
|
1459 (secs, function, object, resignal))
|
|
|
1460 {
|
|
|
1461 unsigned long msecs = lisp_number_to_milliseconds (secs, 0);
|
|
|
1462 unsigned long msecs2 = (NILP (resignal) ? 0 :
|
|
|
1463 lisp_number_to_milliseconds (resignal, 0));
|
|
|
1464 int id;
|
|
|
1465 Lisp_Object lid;
|
|
|
1466 id = event_stream_generate_wakeup (msecs, msecs2, function, object, 1);
|
|
|
1467 lid = make_int (id);
|
|
|
1468 if (id != XINT (lid)) abort ();
|
|
|
1469 return lid;
|
|
|
1470 }
|
|
|
1471
|
|
|
1472 DEFUN ("disable-async-timeout", Fdisable_async_timeout, 1, 1, 0, /*
|
|
|
1473 Disable an asynchronous timeout from signalling any more.
|
|
|
1474 ID should be a timeout id number as returned by `add-async-timeout'. If ID
|
|
|
1475 corresponds to a one-shot timeout that has already signalled, nothing
|
|
|
1476 will happen.
|
|
|
1477
|
|
|
1478 It will not work to call this function on an id number returned by
|
|
|
1479 `add-timeout'. Use `disable-timeout' for that.
|
|
|
1480 */
|
|
|
1481 (id))
|
|
|
1482 {
|
|
|
1483 CHECK_INT (id);
|
|
|
1484 event_stream_disable_wakeup (XINT (id), 1);
|
|
|
1485 return Qnil;
|
|
|
1486 }
|
|
|
1487
|
|
|
1488
|
|
|
1489 /**********************************************************************/
|
|
|
1490 /* enqueuing and dequeuing events */
|
|
|
1491 /**********************************************************************/
|
|
|
1492
|
|
|
1493 /* Add an event to the back of the command-event queue: it will be the next
|
|
|
1494 event read after all pending events. This only works on keyboard,
|
|
|
1495 mouse-click, misc-user, and eval events.
|
|
|
1496 */
|
|
|
1497 static void
|
|
|
1498 enqueue_command_event (Lisp_Object event)
|
|
|
1499 {
|
|
|
1500 enqueue_event (event, &command_event_queue, &command_event_queue_tail);
|
|
|
1501 }
|
|
|
1502
|
|
|
1503 static Lisp_Object
|
|
|
1504 dequeue_command_event (void)
|
|
|
1505 {
|
|
|
1506 return dequeue_event (&command_event_queue, &command_event_queue_tail);
|
|
|
1507 }
|
|
|
1508
|
|
|
1509 /* put the event on the typeahead queue, unless
|
|
|
1510 the event is the quit char, in which case the `QUIT'
|
|
|
1511 which will occur on the next trip through this loop is
|
|
|
1512 all the processing we should do - leaving it on the queue
|
|
|
1513 would cause the quit to be processed twice.
|
|
|
1514 */
|
|
|
1515 static void
|
|
|
1516 enqueue_command_event_1 (Lisp_Object event_to_copy)
|
|
|
1517 {
|
|
|
1518 /* do not call check_quit() here. Vquit_flag was set in
|
|
|
1519 next_event_internal. */
|
|
|
1520 if (NILP (Vquit_flag))
|
|
|
1521 enqueue_command_event (Fcopy_event (event_to_copy, Qnil));
|
|
|
1522 }
|
|
|
1523
|
|
|
1524 void
|
|
|
1525 enqueue_magic_eval_event (void (*fun) (Lisp_Object), Lisp_Object object)
|
|
|
1526 {
|
|
|
1527 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
|
1528
|
|
|
1529 XEVENT (event)->event_type = magic_eval_event;
|
|
|
1530 /* channel for magic_eval events is nil */
|
|
|
1531 XEVENT (event)->event.magic_eval.internal_function = fun;
|
|
|
1532 XEVENT (event)->event.magic_eval.object = object;
|
|
|
1533 enqueue_command_event (event);
|
|
|
1534 }
|
|
|
1535
|
|
|
1536 DEFUN ("enqueue-eval-event", Fenqueue_eval_event, 2, 2, 0, /*
|
|
|
1537 Add an eval event to the back of the eval event queue.
|
|
|
1538 When this event is dispatched, FUNCTION (which should be a function
|
|
|
1539 of one argument) will be called with OBJECT as its argument.
|
|
|
1540 See `next-event' for a description of event types and how events
|
|
|
1541 are received.
|
|
|
1542 */
|
|
|
1543 (function, object))
|
|
|
1544 {
|
|
|
1545 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
|
1546
|
|
|
1547 XEVENT (event)->event_type = eval_event;
|
|
|
1548 /* channel for eval events is nil */
|
|
|
1549 XEVENT (event)->event.eval.function = function;
|
|
|
1550 XEVENT (event)->event.eval.object = object;
|
|
|
1551 enqueue_command_event (event);
|
|
|
1552
|
|
|
1553 return event;
|
|
|
1554 }
|
|
|
1555
|
|
|
1556 Lisp_Object
|
|
|
1557 enqueue_misc_user_event (Lisp_Object channel, Lisp_Object function,
|
|
|
1558 Lisp_Object object)
|
|
|
1559 {
|
|
|
1560 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
|
1561
|
|
|
1562 XEVENT (event)->event_type = misc_user_event;
|
|
|
1563 XEVENT (event)->channel = channel;
|
|
|
1564 XEVENT (event)->event.misc.function = function;
|
|
|
1565 XEVENT (event)->event.misc.object = object;
|
|
|
1566 XEVENT (event)->event.misc.button = 0;
|
|
|
1567 XEVENT (event)->event.misc.modifiers = 0;
|
|
|
1568 XEVENT (event)->event.misc.x = -1;
|
|
|
1569 XEVENT (event)->event.misc.y = -1;
|
|
|
1570 enqueue_command_event (event);
|
|
|
1571
|
|
|
1572 return event;
|
|
|
1573 }
|
|
|
1574
|
|
|
1575 Lisp_Object
|
|
|
1576 enqueue_misc_user_event_pos (Lisp_Object channel, Lisp_Object function,
|
|
|
1577 Lisp_Object object,
|
|
|
1578 int button, int modifiers, int x, int y)
|
|
|
1579 {
|
|
|
1580 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
|
1581
|
|
|
1582 XEVENT (event)->event_type = misc_user_event;
|
|
|
1583 XEVENT (event)->channel = channel;
|
|
|
1584 XEVENT (event)->event.misc.function = function;
|
|
|
1585 XEVENT (event)->event.misc.object = object;
|
|
|
1586 XEVENT (event)->event.misc.button = button;
|
|
|
1587 XEVENT (event)->event.misc.modifiers = modifiers;
|
|
|
1588 XEVENT (event)->event.misc.x = x;
|
|
|
1589 XEVENT (event)->event.misc.y = y;
|
|
|
1590 enqueue_command_event (event);
|
|
|
1591
|
|
|
1592 return event;
|
|
|
1593 }
|
|
|
1594
|
|
|
1595
|
|
|
1596 /**********************************************************************/
|
|
|
1597 /* focus-event handling */
|
|
|
1598 /**********************************************************************/
|
|
|
1599
|
|
|
1600 /*
|
|
|
1601
|
|
|
1602 Ben's capsule lecture on focus:
|
|
|
1603
|
|
|
1604 In FSFmacs `select-frame' never changes the window-manager frame
|
|
|
1605 focus. All it does is change the "selected frame". This is similar
|
|
|
1606 to what happens when we call `select-device' or `select-console'.
|
|
|
1607 Whenever an event comes in (including a keyboard event), its frame is
|
|
|
1608 selected; therefore, evaluating `select-frame' in *scratch* won't
|
|
|
1609 cause any effects because the next received event (in the same frame)
|
|
|
1610 will cause a switch back to the frame displaying *scratch*.
|
|
|
1611
|
|
|
1612 Whenever a focus-change event is received from the window manager, it
|
|
|
1613 generates a `switch-frame' event, which causes the Lisp function
|
|
|
1614 `handle-switch-frame' to get run. This basically just runs
|
|
|
1615 `select-frame' (see below, however).
|
|
|
1616
|
|
|
1617 In FSFmacs, if you want to have an operation run when a frame is
|
|
|
1618 selected, you supply an event binding for `switch-frame' (and then
|
|
|
1619 maybe call `handle-switch-frame', or something ...).
|
|
|
1620
|
|
|
1621 In XEmacs, we *do* change the window-manager frame focus as a result
|
|
|
1622 of `select-frame', but not until the next time an event is received,
|
|
|
1623 so that a function that momentarily changes the selected frame won't
|
|
|
1624 cause WM focus flashing. (#### There's something not quite right here;
|
|
|
1625 this is causing the wrong-cursor-focus problems that you occasionally
|
|
|
1626 see. But the general idea is correct.) This approach is winning for
|
|
|
1627 people who use the explicit-focus model, but is trickier to implement.
|
|
|
1628
|
|
|
1629 We also don't make the `switch-frame' event visible but instead have
|
|
|
1630 `select-frame-hook', which is a better approach.
|
|
|
1631
|
|
|
1632 There is the problem of surrogate minibuffers, where when we enter the
|
|
|
1633 minibuffer, you essentially want to temporarily switch the WM focus to
|
|
|
1634 the frame with the minibuffer, and switch it back when you exit the
|
|
|
1635 minibuffer.
|
|
|
1636
|
|
|
1637 FSFmacs solves this with the crockish `redirect-frame-focus', which
|
|
|
1638 says "for keyboard events received from FRAME, act like they're
|
|
|
1639 coming from FOCUS-FRAME". I think what this means is that, when
|
|
|
1640 a keyboard event comes in and the event manager is about to select the
|
|
|
1641 event's frame, if that frame has its focus redirected, the redirected-to
|
|
|
1642 frame is selected instead. That way, if you're in a minibufferless
|
|
|
1643 frame and enter the minibuffer, then all Lisp functions that run see
|
|
|
1644 the selected frame as the minibuffer's frame rather than the minibufferless
|
|
|
1645 frame you came from, so that (e.g.) your typing actually appears in
|
|
|
1646 the minibuffer's frame and things behave sanely.
|
|
|
1647
|
|
|
1648 There's also some weird logic that switches the redirected frame focus
|
|
|
1649 from one frame to another if Lisp code explicitly calls `select-frame'
|
|
|
1650 \(but not if `handle-switch-frame' is called), and saves and restores
|
|
|
1651 the frame focus in window configurations, etc. etc. All of this logic
|
|
|
1652 is heavily #if 0'd, with lots of comments saying "No, this approach
|
|
|
1653 doesn't seem to work, so I'm trying this ... is it reasonable?
|
|
|
1654 Well, I'm not sure ..." that are a red flag indicating crockishness.
|
|
|
1655
|
|
|
1656 Because of our way of doing things, we can avoid all this crock.
|
|
|
1657 Keyboard events never cause a select-frame (who cares what frame
|
|
|
1658 they're associated with? They come from a console, only). We change
|
|
|
1659 the actual WM focus to a surrogate minibuffer frame, so we don't have
|
|
|
1660 to do any internal redirection. In order to get the focus back,
|
|
|
1661 I took the approach in minibuf.el of just checking to see if the
|
|
|
1662 frame we moved to is still the selected frame, and move back to the
|
|
|
1663 old one if so. Conceivably we might have to do the weird "tracking"
|
|
|
1664 that FSFmacs does when `select-frame' is called, but I don't think
|
|
|
1665 so. If the selected frame moved from the minibuffer frame, then
|
|
|
1666 we just leave it there, figuring that someone knows what they're
|
|
|
1667 doing. Because we don't have any redirection recorded anywhere,
|
|
|
1668 it's safe to do this, and we don't end up with unwanted redirection.
|
|
|
1669
|
|
|
1670 */
|
|
|
1671
|
|
|
1672 static void
|
|
|
1673 run_select_frame_hook (void)
|
|
|
1674 {
|
|
|
1675 run_hook (Qselect_frame_hook);
|
|
|
1676 }
|
|
|
1677
|
|
|
1678 static void
|
|
|
1679 run_deselect_frame_hook (void)
|
|
|
1680 {
|
|
|
1681 run_hook (Qdeselect_frame_hook);
|
|
|
1682 }
|
|
|
1683
|
|
|
1684 /* When select-frame is called and focus_follows_mouse is false, we want
|
|
|
1685 to tell the window system that the focus should be changed to point to
|
|
|
1686 the new frame. However,
|
|
|
1687 sometimes Lisp functions will temporarily change the selected frame
|
|
|
1688 (e.g. to call a function that operates on the selected frame),
|
|
|
1689 and it's annoying if this focus-change happens exactly when
|
|
|
1690 select-frame is called, because then you get some flickering of the
|
|
|
1691 window-manager border and perhaps other undesirable results. We
|
|
|
1692 really only want to change the focus when we're about to retrieve
|
|
|
1693 an event from the user. To do this, we keep track of the frame
|
|
|
1694 where the window-manager focus lies on, and just before waiting
|
|
|
1695 for user events, check the currently selected frame and change
|
|
|
1696 the focus as necessary.
|
|
|
1697
|
|
|
1698 On the other hand, if focus_follows_mouse is true, we need to switch the
|
|
|
1699 selected frame back to the frame with window manager focus just before we
|
|
|
1700 execute the next command in Fcommand_loop_1, just as the selected buffer is
|
|
|
1701 reverted after a set-buffer.
|
|
|
1702
|
|
|
1703 Both cases are handled by this function. It must be called as appropriate
|
|
|
1704 from these two places, depending on the value of focus_follows_mouse. */
|
|
|
1705
|
|
|
1706 void
|
|
|
1707 investigate_frame_change (void)
|
|
|
1708 {
|
|
|
1709 Lisp_Object devcons, concons;
|
|
|
1710
|
|
|
1711 /* if the selected frame was changed, change the window-system
|
|
|
1712 focus to the new frame. We don't do it when select-frame was
|
|
|
1713 called, to avoid flickering and other unwanted side effects when
|
|
|
1714 the frame is just changed temporarily. */
|
|
|
1715 DEVICE_LOOP_NO_BREAK (devcons, concons)
|
|
|
1716 {
|
|
|
1717 struct device *d = XDEVICE (XCAR (devcons));
|
|
|
1718 Lisp_Object sel_frame = DEVICE_SELECTED_FRAME (d);
|
|
|
1719
|
|
|
1720 /* You'd think that maybe we should use FRAME_WITH_FOCUS_REAL,
|
|
|
1721 but that can cause us to end up in an infinite loop focusing
|
|
|
1722 between two frames. It seems that since the call to `select-frame'
|
|
|
1723 in emacs_handle_focus_change_final() is based on the _FOR_HOOKS
|
|
|
1724 value, we need to do so too. */
|
|
|
1725 if (!NILP (sel_frame) &&
|
|
|
1726 !EQ (DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d), sel_frame) &&
|
|
|
1727 !NILP (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d)) &&
|
|
|
1728 !EQ (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d), sel_frame))
|
|
|
1729 {
|
|
|
1730 /* At this point, we know that the frame has been changed. Now, if
|
|
|
1731 * focus_follows_mouse is not set, we finish off the frame change,
|
|
|
1732 * so that user events will now come from the new frame. Otherwise,
|
|
|
1733 * if focus_follows_mouse is set, no gratuitous frame changing
|
|
|
1734 * should take place. Set the focus back to the frame which was
|
|
|
1735 * originally selected for user input.
|
|
|
1736 */
|
|
|
1737 if (!focus_follows_mouse)
|
|
|
1738 {
|
|
|
1739 /* prevent us from issuing the same request more than once */
|
|
|
1740 DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d) = sel_frame;
|
|
|
1741 MAYBE_DEVMETH (d, focus_on_frame, (XFRAME (sel_frame)));
|
|
|
1742 }
|
|
|
1743 else
|
|
|
1744 {
|
|
|
1745 Lisp_Object old_frame = Qnil;
|
|
|
1746
|
|
|
1747 /* #### Do we really want to check OUGHT ??
|
|
|
1748 * It seems to make sense, though I have never seen us
|
|
|
1749 * get here and have it be non-nil.
|
|
|
1750 */
|
|
|
1751 if (FRAMEP (DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d)))
|
|
|
1752 old_frame = DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d);
|
|
|
1753 else if (FRAMEP (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d)))
|
|
|
1754 old_frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d);
|
|
|
1755
|
|
|
1756 /* #### Can old_frame ever be NIL? play it safe.. */
|
|
|
1757 if (!NILP (old_frame))
|
|
|
1758 {
|
|
|
1759 /* Fselect_frame is not really the right thing: it frobs the
|
|
|
1760 * buffer stack. But there's no easy way to do the right
|
|
|
1761 * thing, and this code already had this problem anyway.
|
|
|
1762 */
|
|
|
1763 Fselect_frame (old_frame);
|
|
|
1764 }
|
|
|
1765 }
|
|
|
1766 }
|
|
|
1767 }
|
|
|
1768 }
|
|
|
1769
|
|
|
1770 static Lisp_Object
|
|
|
1771 cleanup_after_missed_defocusing (Lisp_Object frame)
|
|
|
1772 {
|
|
|
1773 if (FRAMEP (frame) && FRAME_LIVE_P (XFRAME (frame)))
|
|
|
1774 Fselect_frame (frame);
|
|
|
1775 return Qnil;
|
|
|
1776 }
|
|
|
1777
|
|
|
1778 void
|
|
|
1779 emacs_handle_focus_change_preliminary (Lisp_Object frame_inp_and_dev)
|
|
|
1780 {
|
|
|
1781 Lisp_Object frame = Fcar (frame_inp_and_dev);
|
|
|
1782 Lisp_Object device = Fcar (Fcdr (frame_inp_and_dev));
|
|
|
1783 int in_p = !NILP (Fcdr (Fcdr (frame_inp_and_dev)));
|
|
|
1784 struct device *d;
|
|
|
1785
|
|
|
1786 if (!DEVICE_LIVE_P (XDEVICE (device)))
|
|
|
1787 return;
|
|
|
1788 else
|
|
|
1789 d = XDEVICE (device);
|
|
|
1790
|
|
|
1791 /* Any received focus-change notifications render invalid any
|
|
|
1792 pending focus-change requests. */
|
|
|
1793 DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d) = Qnil;
|
|
|
1794 if (in_p)
|
|
|
1795 {
|
|
|
1796 Lisp_Object focus_frame;
|
|
|
1797
|
|
|
1798 if (!FRAME_LIVE_P (XFRAME (frame)))
|
|
|
1799 return;
|
|
|
1800 else
|
|
|
1801 focus_frame = DEVICE_FRAME_WITH_FOCUS_REAL (d);
|
|
|
1802
|
|
|
1803 /* Mark the minibuffer as changed to make sure it gets updated
|
|
|
1804 properly if the echo area is active. */
|
|
|
1805 {
|
|
|
1806 struct window *w = XWINDOW (FRAME_MINIBUF_WINDOW (XFRAME (frame)));
|
|
|
1807 MARK_WINDOWS_CHANGED (w);
|
|
|
1808 }
|
|
|
1809
|
|
|
1810 if (FRAMEP (focus_frame) && !EQ (frame, focus_frame))
|
|
|
1811 {
|
|
|
1812 /* Oops, we missed a focus-out event. */
|
|
|
1813 DEVICE_FRAME_WITH_FOCUS_REAL (d) = Qnil;
|
|
|
1814 redisplay_redraw_cursor (XFRAME (focus_frame), 1);
|
|
|
1815 }
|
|
|
1816 DEVICE_FRAME_WITH_FOCUS_REAL (d) = frame;
|
|
|
1817 if (!EQ (frame, focus_frame))
|
|
|
1818 {
|
|
|
1819 redisplay_redraw_cursor (XFRAME (frame), 1);
|
|
|
1820 }
|
|
|
1821 }
|
|
|
1822 else
|
|
|
1823 {
|
|
|
1824 /* We ignore the frame reported in the event. If it's different
|
|
|
1825 from where we think the focus was, oh well -- we messed up.
|
|
|
1826 Nonetheless, we pretend we were right, for sensible behavior. */
|
|
|
1827 frame = DEVICE_FRAME_WITH_FOCUS_REAL (d);
|
|
|
1828 if (!NILP (frame))
|
|
|
1829 {
|
|
|
1830 DEVICE_FRAME_WITH_FOCUS_REAL (d) = Qnil;
|
|
|
1831
|
|
|
1832 if (FRAME_LIVE_P (XFRAME (frame)))
|
|
|
1833 redisplay_redraw_cursor (XFRAME (frame), 1);
|
|
|
1834 }
|
|
|
1835 }
|
|
|
1836 }
|
|
|
1837
|
|
|
1838 /* Called from the window-system-specific code when we receive a
|
|
|
1839 notification that the focus lies on a particular frame.
|
|
|
1840 Argument is a cons: (frame . (device . in-p)) where in-p is non-nil
|
|
|
1841 for focus-in.
|
|
|
1842 */
|
|
|
1843 void
|
|
|
1844 emacs_handle_focus_change_final (Lisp_Object frame_inp_and_dev)
|
|
|
1845 {
|
|
|
1846 Lisp_Object frame = Fcar (frame_inp_and_dev);
|
|
|
1847 Lisp_Object device = Fcar (Fcdr (frame_inp_and_dev));
|
|
|
1848 int in_p = !NILP (Fcdr (Fcdr (frame_inp_and_dev)));
|
|
|
1849 struct device *d;
|
|
|
1850 int count;
|
|
|
1851
|
|
|
1852 if (!DEVICE_LIVE_P (XDEVICE (device)))
|
|
|
1853 return;
|
|
|
1854 else
|
|
|
1855 d = XDEVICE (device);
|
|
|
1856
|
|
|
1857 if (in_p)
|
|
|
1858 {
|
|
|
1859 Lisp_Object focus_frame;
|
|
|
1860
|
|
|
1861 if (!FRAME_LIVE_P (XFRAME (frame)))
|
|
|
1862 return;
|
|
|
1863 else
|
|
|
1864 focus_frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d);
|
|
|
1865
|
|
|
1866 DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d) = frame;
|
|
|
1867 if (FRAMEP (focus_frame) && !EQ (frame, focus_frame))
|
|
|
1868 {
|
|
|
1869 /* Oops, we missed a focus-out event. */
|
|
|
1870 Fselect_frame (focus_frame);
|
|
|
1871 /* Do an unwind-protect in case an error occurs in
|
|
|
1872 the deselect-frame-hook */
|
|
|
1873 count = specpdl_depth ();
|
|
|
1874 record_unwind_protect (cleanup_after_missed_defocusing, frame);
|
|
|
1875 run_deselect_frame_hook ();
|
|
|
1876 unbind_to (count, Qnil);
|
|
|
1877 /* the cleanup method changed the focus frame to nil, so
|
|
|
1878 we need to reflect this */
|
|
|
1879 focus_frame = Qnil;
|
|
|
1880 }
|
|
|
1881 else
|
|
|
1882 Fselect_frame (frame);
|
|
|
1883 if (!EQ (frame, focus_frame))
|
|
|
1884 run_select_frame_hook ();
|
|
|
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_FOR_HOOKS (d);
|
|
|
1892 if (!NILP (frame))
|
|
|
1893 {
|
|
|
1894 DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d) = Qnil;
|
|
|
1895 run_deselect_frame_hook ();
|
|
|
1896 }
|
|
|
1897 }
|
|
|
1898 }
|
|
|
1899
|
|
|
1900
|
|
|
1901 /**********************************************************************/
|
|
|
1902 /* retrieving the next event */
|
|
|
1903 /**********************************************************************/
|
|
|
1904
|
|
|
1905 static int in_single_console;
|
|
|
1906
|
|
|
1907 /* #### These functions don't currently do anything. */
|
|
|
1908 void
|
|
|
1909 single_console_state (void)
|
|
|
1910 {
|
|
|
1911 in_single_console = 1;
|
|
|
1912 }
|
|
|
1913
|
|
|
1914 void
|
|
|
1915 any_console_state (void)
|
|
|
1916 {
|
|
|
1917 in_single_console = 0;
|
|
|
1918 }
|
|
|
1919
|
|
|
1920 int
|
|
|
1921 in_single_console_state (void)
|
|
|
1922 {
|
|
|
1923 return in_single_console;
|
|
|
1924 }
|
|
|
1925
|
|
|
1926 /* the number of keyboard characters read. callint.c wants this. */
|
|
|
1927 Charcount num_input_chars;
|
|
|
1928
|
|
|
1929 static void
|
|
|
1930 next_event_internal (Lisp_Object target_event, int allow_queued)
|
|
|
1931 {
|
|
|
1932 struct gcpro gcpro1;
|
|
|
1933 /* QUIT; This is incorrect - the caller must do this because some
|
|
|
1934 callers (ie, Fnext_event()) do not want to QUIT. */
|
|
|
1935
|
|
|
1936 assert (NILP (XEVENT_NEXT (target_event)));
|
|
|
1937
|
|
|
1938 GCPRO1 (target_event);
|
|
|
1939
|
|
|
1940 /* When focus_follows_mouse is nil, if a frame change took place, we need
|
|
|
1941 * to actually switch window manager focus to the selected window now.
|
|
|
1942 */
|
|
|
1943 if (!focus_follows_mouse)
|
|
|
1944 investigate_frame_change ();
|
|
|
1945
|
|
|
1946 if (allow_queued && !NILP (command_event_queue))
|
|
|
1947 {
|
|
|
1948 Lisp_Object event = dequeue_command_event ();
|
|
|
1949 Fcopy_event (event, target_event);
|
|
|
1950 Fdeallocate_event (event);
|
|
|
1951 DEBUG_PRINT_EMACS_EVENT ("command event queue", target_event);
|
|
|
1952 }
|
|
|
1953 else
|
|
|
1954 {
|
|
440
|
1955 Lisp_Event *e = XEVENT (target_event);
|
|
428
|
1956
|
|
|
1957 /* The command_event_queue was empty. Wait for an event. */
|
|
|
1958 event_stream_next_event (e);
|
|
|
1959 /* If this was a timeout, then we need to extract some data
|
|
|
1960 out of the returned closure and might need to resignal
|
|
|
1961 it. */
|
|
|
1962 if (e->event_type == timeout_event)
|
|
|
1963 {
|
|
|
1964 Lisp_Object tristan, isolde;
|
|
|
1965
|
|
|
1966 e->event.timeout.id_number =
|
|
|
1967 event_stream_resignal_wakeup (e->event.timeout.interval_id, 0,
|
|
|
1968 &tristan, &isolde);
|
|
|
1969
|
|
|
1970 e->event.timeout.function = tristan;
|
|
|
1971 e->event.timeout.object = isolde;
|
|
|
1972 /* next_event_internal() doesn't print out timeout events
|
|
|
1973 because of the extra info we just set. */
|
|
|
1974 DEBUG_PRINT_EMACS_EVENT ("real, timeout", target_event);
|
|
|
1975 }
|
|
|
1976
|
|
|
1977 /* If we read a ^G, then set quit-flag but do not discard the ^G.
|
|
|
1978 The callers of next_event_internal() will do one of two things:
|
|
|
1979
|
|
|
1980 -- set Vquit_flag to Qnil. (next-event does this.) This will
|
|
|
1981 cause the ^G to be treated as a normal keystroke.
|
|
|
1982 -- not change Vquit_flag but attempt to enqueue the ^G, at
|
|
|
1983 which point it will be discarded. The next time QUIT is
|
|
|
1984 called, it will notice that Vquit_flag was set.
|
|
|
1985
|
|
|
1986 */
|
|
|
1987 if (e->event_type == key_press_event &&
|
|
|
1988 event_matches_key_specifier_p
|
|
|
1989 (e, make_char (CONSOLE_QUIT_CHAR (XCONSOLE (EVENT_CHANNEL (e))))))
|
|
|
1990 {
|
|
|
1991 Vquit_flag = Qt;
|
|
|
1992 }
|
|
|
1993 }
|
|
|
1994
|
|
|
1995 UNGCPRO;
|
|
|
1996 }
|
|
|
1997
|
|
|
1998 static void
|
|
|
1999 run_pre_idle_hook (void)
|
|
|
2000 {
|
|
|
2001 if (!NILP (Vpre_idle_hook)
|
|
|
2002 && !detect_input_pending ())
|
|
|
2003 safe_run_hook_trapping_errors
|
|
|
2004 ("Error in `pre-idle-hook' (setting hook to nil)",
|
|
|
2005 Qpre_idle_hook, 1);
|
|
|
2006 }
|
|
|
2007
|
|
|
2008 static void push_this_command_keys (Lisp_Object event);
|
|
|
2009 static void push_recent_keys (Lisp_Object event);
|
|
|
2010 static void dribble_out_event (Lisp_Object event);
|
|
|
2011 static void execute_internal_event (Lisp_Object event);
|
|
|
2012
|
|
|
2013 DEFUN ("next-event", Fnext_event, 0, 2, 0, /*
|
|
|
2014 Return the next available event.
|
|
|
2015 Pass this object to `dispatch-event' to handle it.
|
|
|
2016 In most cases, you will want to use `next-command-event', which returns
|
|
|
2017 the next available "user" event (i.e. keypress, button-press,
|
|
|
2018 button-release, or menu selection) instead of this function.
|
|
|
2019
|
|
|
2020 If EVENT is non-nil, it should be an event object and will be filled in
|
|
|
2021 and returned; otherwise a new event object will be created and returned.
|
|
|
2022 If PROMPT is non-nil, it should be a string and will be displayed in the
|
|
|
2023 echo area while this function is waiting for an event.
|
|
|
2024
|
|
|
2025 The next available event will be
|
|
|
2026
|
|
|
2027 -- any events in `unread-command-events' or `unread-command-event'; else
|
|
|
2028 -- the next event in the currently executing keyboard macro, if any; else
|
|
442
|
2029 -- an event queued by `enqueue-eval-event', if any, or any similar event
|
|
|
2030 queued internally, such as a misc-user event. (For example, when an item
|
|
|
2031 is selected from a menu or from a `question'-type dialog box, the item's
|
|
|
2032 callback is not immediately executed, but instead a misc-user event
|
|
|
2033 is generated and placed onto this queue; when it is dispatched, the
|
|
|
2034 callback is executed.) Else
|
|
428
|
2035 -- the next available event from the window system or terminal driver.
|
|
|
2036
|
|
|
2037 In the last case, this function will block until an event is available.
|
|
|
2038
|
|
|
2039 The returned event will be one of the following types:
|
|
|
2040
|
|
|
2041 -- a key-press event.
|
|
|
2042 -- a button-press or button-release event.
|
|
|
2043 -- a misc-user-event, meaning the user selected an item on a menu or used
|
|
|
2044 the scrollbar.
|
|
|
2045 -- a process event, meaning that output from a subprocess is available.
|
|
|
2046 -- a timeout event, meaning that a timeout has elapsed.
|
|
|
2047 -- an eval event, which simply causes a function to be executed when the
|
|
|
2048 event is dispatched. Eval events are generated by `enqueue-eval-event'
|
|
|
2049 or by certain other conditions happening.
|
|
|
2050 -- a magic event, indicating that some window-system-specific event
|
|
|
2051 happened (such as a focus-change notification) that must be handled
|
|
|
2052 synchronously with other events. `dispatch-event' knows what to do with
|
|
|
2053 these events.
|
|
|
2054 */
|
|
|
2055 (event, prompt))
|
|
|
2056 {
|
|
|
2057 /* This function can call lisp */
|
|
|
2058 /* #### We start out using the selected console before an event
|
|
|
2059 is received, for echoing the partially completed command.
|
|
|
2060 This is most definitely wrong -- there needs to be a separate
|
|
|
2061 echo area for each console! */
|
|
|
2062 struct console *con = XCONSOLE (Vselected_console);
|
|
|
2063 struct command_builder *command_builder =
|
|
|
2064 XCOMMAND_BUILDER (con->command_builder);
|
|
|
2065 int store_this_key = 0;
|
|
|
2066 struct gcpro gcpro1;
|
|
|
2067
|
|
|
2068 GCPRO1 (event);
|
|
|
2069 /* DO NOT do QUIT anywhere within this function or the functions it calls.
|
|
|
2070 We want to read the ^G as an event. */
|
|
|
2071
|
|
|
2072 #ifdef LWLIB_MENUBARS_LUCID
|
|
|
2073 /*
|
|
|
2074 * #### Fix the menu code so this isn't necessary.
|
|
|
2075 *
|
|
|
2076 * We cannot allow the lwmenu code to be reentered, because the
|
|
|
2077 * code is not written to be reentrant and will crash. Therefore
|
|
|
2078 * paths from the menu callbacks back into the menu code have to
|
|
|
2079 * be blocked. Fnext_event is the normal path into the menu code,
|
|
|
2080 * so we signal an error here.
|
|
|
2081 */
|
|
|
2082 if (in_menu_callback)
|
|
|
2083 error ("Attempt to call next-event inside menu callback");
|
|
|
2084 #endif /* LWLIB_MENUBARS_LUCID */
|
|
|
2085
|
|
|
2086 if (NILP (event))
|
|
|
2087 event = Fmake_event (Qnil, Qnil);
|
|
|
2088 else
|
|
|
2089 CHECK_LIVE_EVENT (event);
|
|
|
2090
|
|
|
2091 if (!NILP (prompt))
|
|
|
2092 {
|
|
|
2093 Bytecount len;
|
|
|
2094 CHECK_STRING (prompt);
|
|
|
2095
|
|
|
2096 len = XSTRING_LENGTH (prompt);
|
|
|
2097 if (command_builder->echo_buf_length < len)
|
|
|
2098 len = command_builder->echo_buf_length - 1;
|
|
|
2099 memcpy (command_builder->echo_buf, XSTRING_DATA (prompt), len);
|
|
|
2100 command_builder->echo_buf[len] = 0;
|
|
|
2101 command_builder->echo_buf_index = len;
|
|
|
2102 echo_area_message (XFRAME (CONSOLE_SELECTED_FRAME (con)),
|
|
|
2103 command_builder->echo_buf,
|
|
|
2104 Qnil, 0,
|
|
|
2105 command_builder->echo_buf_index,
|
|
|
2106 Qcommand);
|
|
|
2107 }
|
|
|
2108
|
|
|
2109 start_over_and_avoid_hosage:
|
|
|
2110
|
|
|
2111 /* If there is something in unread-command-events, simply return it.
|
|
|
2112 But do some error checking to make sure the user hasn't put something
|
|
|
2113 in the unread-command-events that they shouldn't have.
|
|
|
2114 This does not update this-command-keys and recent-keys.
|
|
|
2115 */
|
|
|
2116 if (!NILP (Vunread_command_events))
|
|
|
2117 {
|
|
|
2118 if (!CONSP (Vunread_command_events))
|
|
|
2119 {
|
|
|
2120 Vunread_command_events = Qnil;
|
|
|
2121 signal_error (Qwrong_type_argument,
|
|
|
2122 list3 (Qconsp, Vunread_command_events,
|
|
|
2123 Qunread_command_events));
|
|
|
2124 }
|
|
|
2125 else
|
|
|
2126 {
|
|
|
2127 Lisp_Object e = XCAR (Vunread_command_events);
|
|
|
2128 Vunread_command_events = XCDR (Vunread_command_events);
|
|
|
2129 if (!EVENTP (e) || !command_event_p (e))
|
|
|
2130 signal_error (Qwrong_type_argument,
|
|
|
2131 list3 (Qcommand_event_p, e, Qunread_command_events));
|
|
|
2132 redisplay ();
|
|
|
2133 if (!EQ (e, event))
|
|
|
2134 Fcopy_event (e, event);
|
|
|
2135 DEBUG_PRINT_EMACS_EVENT ("unread-command-events", event);
|
|
|
2136 }
|
|
|
2137 }
|
|
|
2138
|
|
|
2139 /* Do similar for unread-command-event (obsoleteness support). */
|
|
|
2140 else if (!NILP (Vunread_command_event))
|
|
|
2141 {
|
|
|
2142 Lisp_Object e = Vunread_command_event;
|
|
|
2143 Vunread_command_event = Qnil;
|
|
|
2144
|
|
|
2145 if (!EVENTP (e) || !command_event_p (e))
|
|
|
2146 {
|
|
|
2147 signal_error (Qwrong_type_argument,
|
|
|
2148 list3 (Qeventp, e, Qunread_command_event));
|
|
|
2149 }
|
|
|
2150 if (!EQ (e, event))
|
|
|
2151 Fcopy_event (e, event);
|
|
|
2152 redisplay ();
|
|
|
2153 DEBUG_PRINT_EMACS_EVENT ("unread-command-event", event);
|
|
|
2154 }
|
|
|
2155
|
|
|
2156 /* If we're executing a keyboard macro, take the next event from that,
|
|
|
2157 and update this-command-keys and recent-keys.
|
|
|
2158 Note that the unread-command-events take precedence over kbd macros.
|
|
|
2159 */
|
|
|
2160 else
|
|
|
2161 {
|
|
|
2162 if (!NILP (Vexecuting_macro))
|
|
|
2163 {
|
|
|
2164 redisplay ();
|
|
|
2165 pop_kbd_macro_event (event); /* This throws past us at
|
|
|
2166 end-of-macro. */
|
|
|
2167 store_this_key = 1;
|
|
|
2168 DEBUG_PRINT_EMACS_EVENT ("keyboard macro", event);
|
|
|
2169 }
|
|
|
2170 /* Otherwise, read a real event, possibly from the
|
|
|
2171 command_event_queue, and update this-command-keys and
|
|
|
2172 recent-keys. */
|
|
|
2173 else
|
|
|
2174 {
|
|
|
2175 run_pre_idle_hook ();
|
|
|
2176 redisplay ();
|
|
|
2177 next_event_internal (event, 1);
|
|
|
2178 Vquit_flag = Qnil; /* Read C-g as an event. */
|
|
|
2179 store_this_key = 1;
|
|
|
2180 }
|
|
|
2181 }
|
|
|
2182
|
|
|
2183 status_notify (); /* Notice process change */
|
|
|
2184
|
|
|
2185 #ifdef C_ALLOCA
|
|
|
2186 alloca (0); /* Cause a garbage collection now */
|
|
|
2187 /* Since we can free the most stuff here
|
|
|
2188 * (since this is typically called from
|
|
|
2189 * the command-loop top-level). */
|
|
|
2190 #endif /* C_ALLOCA */
|
|
|
2191
|
|
|
2192 if (object_dead_p (XEVENT (event)->channel))
|
|
|
2193 /* event_console_or_selected may crash if the channel is dead.
|
|
|
2194 Best just to eat it and get the next event. */
|
|
|
2195 goto start_over_and_avoid_hosage;
|
|
|
2196
|
|
|
2197 /* OK, now we can stop the selected-console kludge and use the
|
|
|
2198 actual console from the event. */
|
|
|
2199 con = event_console_or_selected (event);
|
|
|
2200 command_builder = XCOMMAND_BUILDER (con->command_builder);
|
|
|
2201
|
|
|
2202 switch (XEVENT_TYPE (event))
|
|
|
2203 {
|
|
|
2204 default:
|
|
|
2205 goto RETURN;
|
|
|
2206 case button_release_event:
|
|
|
2207 case misc_user_event:
|
|
|
2208 /* don't echo menu accelerator keys */
|
|
|
2209 reset_key_echo (command_builder, 1);
|
|
|
2210 goto EXECUTE_KEY;
|
|
|
2211 case button_press_event: /* key or mouse input can trigger prompting */
|
|
|
2212 goto STORE_AND_EXECUTE_KEY;
|
|
|
2213 case key_press_event: /* any key input can trigger autosave */
|
|
|
2214 break;
|
|
|
2215 }
|
|
|
2216
|
|
|
2217 maybe_do_auto_save ();
|
|
|
2218 num_input_chars++;
|
|
|
2219 STORE_AND_EXECUTE_KEY:
|
|
|
2220 if (store_this_key)
|
|
|
2221 {
|
|
|
2222 echo_key_event (command_builder, event);
|
|
|
2223 }
|
|
|
2224
|
|
|
2225 EXECUTE_KEY:
|
|
|
2226 /* Store the last-input-event. The semantics of this is that it is
|
|
|
2227 the thing most recently returned by next-command-event. It need
|
|
|
2228 not have come from the keyboard or a keyboard macro, it may have
|
|
|
2229 come from unread-command-events. It's always a command-event (a
|
|
|
2230 key, click, or menu selection), never a motion or process event.
|
|
|
2231 */
|
|
|
2232 if (!EVENTP (Vlast_input_event))
|
|
|
2233 Vlast_input_event = Fmake_event (Qnil, Qnil);
|
|
|
2234 if (XEVENT_TYPE (Vlast_input_event) == dead_event)
|
|
|
2235 {
|
|
|
2236 Vlast_input_event = Fmake_event (Qnil, Qnil);
|
|
|
2237 error ("Someone deallocated last-input-event!");
|
|
|
2238 }
|
|
|
2239 if (! EQ (event, Vlast_input_event))
|
|
|
2240 Fcopy_event (event, Vlast_input_event);
|
|
|
2241
|
|
|
2242 /* last-input-char and last-input-time are derived from
|
|
|
2243 last-input-event.
|
|
|
2244 Note that last-input-char will never have its high-bit set, in an
|
|
|
2245 effort to sidestep the ambiguity between M-x and oslash.
|
|
|
2246 */
|
|
|
2247 Vlast_input_char = Fevent_to_character (Vlast_input_event,
|
|
|
2248 Qnil, Qnil, Qnil);
|
|
|
2249 {
|
|
|
2250 EMACS_TIME t;
|
|
|
2251 EMACS_GET_TIME (t);
|
|
|
2252 if (!CONSP (Vlast_input_time))
|
|
|
2253 Vlast_input_time = Fcons (Qnil, Qnil);
|
|
|
2254 XCAR (Vlast_input_time) = make_int ((EMACS_SECS (t) >> 16) & 0xffff);
|
|
|
2255 XCDR (Vlast_input_time) = make_int ((EMACS_SECS (t) >> 0) & 0xffff);
|
|
|
2256 if (!CONSP (Vlast_command_event_time))
|
|
|
2257 Vlast_command_event_time = list3 (Qnil, Qnil, Qnil);
|
|
|
2258 XCAR (Vlast_command_event_time) =
|
|
|
2259 make_int ((EMACS_SECS (t) >> 16) & 0xffff);
|
|
|
2260 XCAR (XCDR (Vlast_command_event_time)) =
|
|
|
2261 make_int ((EMACS_SECS (t) >> 0) & 0xffff);
|
|
|
2262 XCAR (XCDR (XCDR (Vlast_command_event_time)))
|
|
|
2263 = make_int (EMACS_USECS (t));
|
|
|
2264 }
|
|
|
2265 /* If this key came from the keyboard or from a keyboard macro, then
|
|
|
2266 it goes into the recent-keys and this-command-keys vectors.
|
|
|
2267 If this key came from the keyboard, and we're defining a keyboard
|
|
|
2268 macro, then it goes into the macro.
|
|
|
2269 */
|
|
|
2270 if (store_this_key)
|
|
|
2271 {
|
|
|
2272 push_this_command_keys (event);
|
|
|
2273 if (!inhibit_input_event_recording)
|
|
|
2274 push_recent_keys (event);
|
|
|
2275 dribble_out_event (event);
|
|
|
2276 if (!NILP (con->defining_kbd_macro) && NILP (Vexecuting_macro))
|
|
|
2277 {
|
|
|
2278 if (!EVENTP (command_builder->current_events))
|
|
|
2279 finalize_kbd_macro_chars (con);
|
|
|
2280 store_kbd_macro_event (event);
|
|
|
2281 }
|
|
|
2282 }
|
|
|
2283 /* If this is the help char and there is a help form, then execute the
|
|
|
2284 help form and swallow this character. This is the only place where
|
|
|
2285 calling Fnext_event() can cause arbitrary lisp code to run. Note
|
|
|
2286 that execute_help_form() calls Fnext_command_event(), which calls
|
|
|
2287 this function, as well as Fdispatch_event.
|
|
|
2288 */
|
|
|
2289 if (!NILP (Vhelp_form) &&
|
|
|
2290 event_matches_key_specifier_p (XEVENT (event), Vhelp_char))
|
|
|
2291 execute_help_form (command_builder, event);
|
|
|
2292
|
|
|
2293 RETURN:
|
|
|
2294 UNGCPRO;
|
|
|
2295 return event;
|
|
|
2296 }
|
|
|
2297
|
|
|
2298 DEFUN ("next-command-event", Fnext_command_event, 0, 2, 0, /*
|
|
|
2299 Return the next available "user" event.
|
|
|
2300 Pass this object to `dispatch-event' to handle it.
|
|
|
2301
|
|
|
2302 If EVENT is non-nil, it should be an event object and will be filled in
|
|
|
2303 and returned; otherwise a new event object will be created and returned.
|
|
|
2304 If PROMPT is non-nil, it should be a string and will be displayed in the
|
|
|
2305 echo area while this function is waiting for an event.
|
|
|
2306
|
|
|
2307 The event returned will be a keyboard, mouse press, or mouse release event.
|
|
|
2308 If there are non-command events available (mouse motion, sub-process output,
|
|
|
2309 etc) then these will be executed (with `dispatch-event') and discarded. This
|
|
|
2310 function is provided as a convenience; it is roughly equivalent to the lisp code
|
|
|
2311
|
|
|
2312 (while (progn
|
|
|
2313 (next-event event prompt)
|
|
|
2314 (not (or (key-press-event-p event)
|
|
|
2315 (button-press-event-p event)
|
|
|
2316 (button-release-event-p event)
|
|
|
2317 (misc-user-event-p event))))
|
|
|
2318 (dispatch-event event))
|
|
|
2319
|
|
|
2320 but it also makes a provision for displaying keystrokes in the echo area.
|
|
|
2321 */
|
|
|
2322 (event, prompt))
|
|
|
2323 {
|
|
|
2324 /* This function can GC */
|
|
|
2325 struct gcpro gcpro1;
|
|
|
2326 GCPRO1 (event);
|
|
|
2327 maybe_echo_keys (XCOMMAND_BUILDER
|
|
|
2328 (XCONSOLE (Vselected_console)->
|
|
|
2329 command_builder), 0); /* #### This sucks bigtime */
|
|
|
2330 for (;;)
|
|
|
2331 {
|
|
|
2332 event = Fnext_event (event, prompt);
|
|
|
2333 if (command_event_p (event))
|
|
|
2334 break;
|
|
|
2335 else
|
|
|
2336 execute_internal_event (event);
|
|
|
2337 }
|
|
|
2338 UNGCPRO;
|
|
|
2339 return event;
|
|
|
2340 }
|
|
|
2341
|
|
442
|
2342 DEFUN ("dispatch-non-command-events", Fdispatch_non_command_events, 0, 0, 0, /*
|
|
|
2343 Dispatch any pending "magic" events.
|
|
|
2344
|
|
|
2345 This function is useful for forcing the redisplay of native
|
|
|
2346 widgets. Normally these are redisplayed through a native window-system
|
|
|
2347 event encoded as magic event, rather than by the redisplay code. This
|
|
|
2348 function does not call redisplay or do any of the other things that
|
|
|
2349 `next-event' does.
|
|
|
2350 */
|
|
|
2351 ())
|
|
|
2352 {
|
|
|
2353 /* This function can GC */
|
|
|
2354 Lisp_Object event = Qnil;
|
|
|
2355 struct gcpro gcpro1;
|
|
|
2356 GCPRO1 (event);
|
|
|
2357 event = Fmake_event (Qnil, Qnil);
|
|
|
2358
|
|
|
2359 /* Make sure that there will be something in the native event queue
|
|
|
2360 so that externally managed things (e.g. widgets) get some CPU
|
|
|
2361 time. */
|
|
|
2362 event_stream_force_event_pending (selected_frame ());
|
|
|
2363
|
|
|
2364 while (event_stream_event_pending_p (0))
|
|
|
2365 {
|
|
|
2366 QUIT; /* next_event_internal() does not QUIT. */
|
|
|
2367
|
|
|
2368 /* We're a generator of the command_event_queue, so we can't be a
|
|
|
2369 consumer as well. Also, we have no reason to consult the
|
|
|
2370 command_event_queue; there are only user and eval-events there,
|
|
|
2371 and we'd just have to put them back anyway.
|
|
|
2372 */
|
|
|
2373 next_event_internal (event, 0); /* blocks */
|
|
|
2374 /* See the comment in accept-process-output about Vquit_flag */
|
|
|
2375 if (XEVENT_TYPE (event) == magic_event ||
|
|
|
2376 XEVENT_TYPE (event) == timeout_event ||
|
|
|
2377 XEVENT_TYPE (event) == process_event ||
|
|
|
2378 XEVENT_TYPE (event) == pointer_motion_event)
|
|
|
2379 execute_internal_event (event);
|
|
|
2380 else
|
|
|
2381 {
|
|
|
2382 enqueue_command_event_1 (event);
|
|
|
2383 break;
|
|
|
2384 }
|
|
|
2385 }
|
|
|
2386
|
|
|
2387 Fdeallocate_event (event);
|
|
|
2388 UNGCPRO;
|
|
|
2389 return Qnil;
|
|
|
2390 }
|
|
|
2391
|
|
428
|
2392 static void
|
|
|
2393 reset_current_events (struct command_builder *command_builder)
|
|
|
2394 {
|
|
|
2395 Lisp_Object event = command_builder->current_events;
|
|
|
2396 reset_command_builder_event_chain (command_builder);
|
|
|
2397 if (EVENTP (event))
|
|
|
2398 deallocate_event_chain (event);
|
|
|
2399 }
|
|
|
2400
|
|
|
2401 DEFUN ("discard-input", Fdiscard_input, 0, 0, 0, /*
|
|
|
2402 Discard any pending "user" events.
|
|
|
2403 Also cancel any kbd macro being defined.
|
|
|
2404 A user event is a key press, button press, button release, or
|
|
|
2405 "misc-user" event (menu selection or scrollbar action).
|
|
|
2406 */
|
|
|
2407 ())
|
|
|
2408 {
|
|
|
2409 /* This throws away user-input on the queue, but doesn't process any
|
|
|
2410 events. Calling dispatch_event() here leads to a race condition.
|
|
|
2411 */
|
|
|
2412 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
|
2413 Lisp_Object head = Qnil, tail = Qnil;
|
|
|
2414 Lisp_Object oiq = Vinhibit_quit;
|
|
|
2415 struct gcpro gcpro1, gcpro2;
|
|
|
2416 /* #### not correct here with Vselected_console? Should
|
|
|
2417 discard-input take a console argument, or maybe map over
|
|
|
2418 all consoles? */
|
|
|
2419 struct console *con = XCONSOLE (Vselected_console);
|
|
|
2420
|
|
|
2421 /* next_event_internal() can cause arbitrary Lisp code to be evalled */
|
|
|
2422 GCPRO2 (event, oiq);
|
|
|
2423 Vinhibit_quit = Qt;
|
|
|
2424 /* If a macro was being defined then we have to mark the modeline
|
|
|
2425 has changed to ensure that it gets updated correctly. */
|
|
|
2426 if (!NILP (con->defining_kbd_macro))
|
|
|
2427 MARK_MODELINE_CHANGED;
|
|
|
2428 con->defining_kbd_macro = Qnil;
|
|
|
2429 reset_current_events (XCOMMAND_BUILDER (con->command_builder));
|
|
|
2430
|
|
|
2431 while (!NILP (command_event_queue)
|
|
|
2432 || event_stream_event_pending_p (1))
|
|
|
2433 {
|
|
|
2434 /* This will take stuff off the command_event_queue, or read it
|
|
|
2435 from the event_stream, but it will not block.
|
|
|
2436 */
|
|
|
2437 next_event_internal (event, 1);
|
|
|
2438 Vquit_flag = Qnil; /* Treat C-g as a user event (ignore it).
|
|
|
2439 It is vitally important that we reset
|
|
|
2440 Vquit_flag here. Otherwise, if we're
|
|
|
2441 reading from a TTY console,
|
|
|
2442 maybe_read_quit_event() will notice
|
|
|
2443 that C-g has been set and send us
|
|
|
2444 another C-g. That will cause us
|
|
|
2445 to get right back here, and read
|
|
|
2446 another C-g, ad infinitum ... */
|
|
|
2447
|
|
|
2448 /* If the event is a user event, ignore it. */
|
|
|
2449 if (!command_event_p (event))
|
|
|
2450 {
|
|
|
2451 /* Otherwise, chain the event onto our list of events not to ignore,
|
|
|
2452 and keep reading until the queue is empty. This does not mean
|
|
|
2453 that if a subprocess is generating an infinite amount of output,
|
|
|
2454 we will never terminate (*provided* that the behavior of
|
|
|
2455 next_event_cb() is correct -- see the comment in events.h),
|
|
|
2456 because this loop ends as soon as there are no more user events
|
|
|
2457 on the command_event_queue or event_stream.
|
|
|
2458 */
|
|
|
2459 enqueue_event (Fcopy_event (event, Qnil), &head, &tail);
|
|
|
2460 }
|
|
|
2461 }
|
|
|
2462
|
|
|
2463 if (!NILP (command_event_queue) || !NILP (command_event_queue_tail))
|
|
|
2464 abort ();
|
|
|
2465
|
|
|
2466 /* Now tack our chain of events back on to the front of the queue.
|
|
|
2467 Actually, since the queue is now drained, we can just replace it.
|
|
|
2468 The effect of this will be that we have deleted all user events
|
|
|
2469 from the input stream without changing the relative ordering of
|
|
|
2470 any other events. (Some events may have been taken from the
|
|
|
2471 event_stream and added to the command_event_queue, however.)
|
|
|
2472
|
|
|
2473 At this time, the command_event_queue will contain only eval_events.
|
|
|
2474 */
|
|
|
2475
|
|
|
2476 command_event_queue = head;
|
|
|
2477 command_event_queue_tail = tail;
|
|
|
2478
|
|
|
2479 Fdeallocate_event (event);
|
|
|
2480 UNGCPRO;
|
|
|
2481
|
|
|
2482 Vinhibit_quit = oiq;
|
|
|
2483 return Qnil;
|
|
|
2484 }
|
|
|
2485
|
|
|
2486
|
|
|
2487 /**********************************************************************/
|
|
|
2488 /* pausing until an action occurs */
|
|
|
2489 /**********************************************************************/
|
|
|
2490
|
|
|
2491 /* This is used in accept-process-output, sleep-for and sit-for.
|
|
|
2492 Before running any process_events in these routines, we set
|
|
|
2493 recursive_sit_for to Qt, and use this unwind protect to reset it to
|
|
|
2494 Qnil upon exit. When recursive_sit_for is Qt, calling sit-for will
|
|
|
2495 cause it to return immediately.
|
|
|
2496
|
|
|
2497 All of these routines install timeouts, so we clear the installed
|
|
|
2498 timeout as well.
|
|
|
2499
|
|
|
2500 Note: It's very easy to break the desired behaviors of these
|
|
|
2501 3 routines. If you make any changes to anything in this area, run
|
|
|
2502 the regression tests at the bottom of the file. -- dmoore */
|
|
|
2503
|
|
|
2504
|
|
|
2505 static Lisp_Object
|
|
|
2506 sit_for_unwind (Lisp_Object timeout_id)
|
|
|
2507 {
|
|
|
2508 if (!NILP(timeout_id))
|
|
|
2509 Fdisable_timeout (timeout_id);
|
|
|
2510
|
|
|
2511 recursive_sit_for = Qnil;
|
|
|
2512 return Qnil;
|
|
|
2513 }
|
|
|
2514
|
|
|
2515 /* #### Is (accept-process-output nil 3) supposed to be like (sleep-for 3)?
|
|
|
2516 */
|
|
|
2517
|
|
|
2518 DEFUN ("accept-process-output", Faccept_process_output, 0, 3, 0, /*
|
|
|
2519 Allow any pending output from subprocesses to be read by Emacs.
|
|
|
2520 It is read into the process' buffers or given to their filter functions.
|
|
|
2521 Non-nil arg PROCESS means do not return until some output has been received
|
|
|
2522 from PROCESS. Nil arg PROCESS means do not return until some output has
|
|
|
2523 been received from any process.
|
|
|
2524 If the second arg is non-nil, it is the maximum number of seconds to wait:
|
|
|
2525 this function will return after that much time even if no input has arrived
|
|
|
2526 from PROCESS. This argument may be a float, meaning wait some fractional
|
|
|
2527 part of a second.
|
|
|
2528 If the third arg is non-nil, it is a number of milliseconds that is added
|
|
|
2529 to the second arg. (This exists only for compatibility.)
|
|
|
2530 Return non-nil iff we received any output before the timeout expired.
|
|
|
2531 */
|
|
|
2532 (process, timeout_secs, timeout_msecs))
|
|
|
2533 {
|
|
|
2534 /* This function can GC */
|
|
|
2535 struct gcpro gcpro1, gcpro2;
|
|
|
2536 Lisp_Object event = Qnil;
|
|
|
2537 Lisp_Object result = Qnil;
|
|
|
2538 int timeout_id = -1;
|
|
|
2539 int timeout_enabled = 0;
|
|
|
2540 int done = 0;
|
|
|
2541 struct buffer *old_buffer = current_buffer;
|
|
|
2542 int count;
|
|
|
2543
|
|
|
2544 /* We preserve the current buffer but nothing else. If a focus
|
|
|
2545 change alters the selected window then the top level event loop
|
|
|
2546 will eventually alter current_buffer to match. In the mean time
|
|
|
2547 we don't want to mess up whatever called this function. */
|
|
|
2548
|
|
|
2549 if (!NILP (process))
|
|
|
2550 CHECK_PROCESS (process);
|
|
|
2551
|
|
|
2552 GCPRO2 (event, process);
|
|
|
2553
|
|
|
2554 if (!NILP (timeout_secs) || !NILP (timeout_msecs))
|
|
|
2555 {
|
|
|
2556 unsigned long msecs = 0;
|
|
|
2557 if (!NILP (timeout_secs))
|
|
|
2558 msecs = lisp_number_to_milliseconds (timeout_secs, 1);
|
|
|
2559 if (!NILP (timeout_msecs))
|
|
|
2560 {
|
|
|
2561 CHECK_NATNUM (timeout_msecs);
|
|
|
2562 msecs += XINT (timeout_msecs);
|
|
|
2563 }
|
|
|
2564 if (msecs)
|
|
|
2565 {
|
|
|
2566 timeout_id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0);
|
|
|
2567 timeout_enabled = 1;
|
|
|
2568 }
|
|
|
2569 }
|
|
|
2570
|
|
|
2571 event = Fmake_event (Qnil, Qnil);
|
|
|
2572
|
|
|
2573 count = specpdl_depth ();
|
|
|
2574 record_unwind_protect (sit_for_unwind,
|
|
|
2575 timeout_enabled ? make_int (timeout_id) : Qnil);
|
|
|
2576 recursive_sit_for = Qt;
|
|
|
2577
|
|
|
2578 while (!done &&
|
|
|
2579 ((NILP (process) && timeout_enabled) ||
|
|
|
2580 (NILP (process) && event_stream_event_pending_p (0)) ||
|
|
|
2581 (!NILP (process))))
|
|
|
2582 /* Calling detect_input_pending() is the wrong thing here, because
|
|
|
2583 that considers the Vunread_command_events and command_event_queue.
|
|
|
2584 We don't need to look at the command_event_queue because we are
|
|
|
2585 only interested in process events, which don't go on that. In
|
|
|
2586 fact, we can't read from it anyway, because we put stuff on it.
|
|
|
2587
|
|
|
2588 Note that event_stream->event_pending_p must be called in such
|
|
|
2589 a way that it says whether any events *of any kind* are ready,
|
|
|
2590 not just user events, or (accept-process-output nil) will fail
|
|
|
2591 to dispatch any process events that may be on the queue. It is
|
|
|
2592 not clear to me that this is important, because the top-level
|
|
|
2593 loop will process it, and I don't think that there is ever a
|
|
|
2594 time when one calls accept-process-output with a nil argument
|
|
|
2595 and really need the processes to be handled. */
|
|
|
2596 {
|
|
|
2597 /* If our timeout has arrived, we move along. */
|
|
|
2598 if (timeout_enabled && !event_stream_wakeup_pending_p (timeout_id, 0))
|
|
|
2599 {
|
|
|
2600 timeout_enabled = 0;
|
|
|
2601 done = 1; /* We're done. */
|
|
|
2602 continue; /* Don't call next_event_internal */
|
|
|
2603 }
|
|
|
2604
|
|
|
2605 QUIT; /* next_event_internal() does not QUIT, so check for ^G
|
|
|
2606 before reading output from the process - this makes it
|
|
|
2607 less likely that the filter will actually be aborted.
|
|
|
2608 */
|
|
|
2609
|
|
|
2610 next_event_internal (event, 0);
|
|
|
2611 /* If C-g was pressed while we were waiting, Vquit_flag got
|
|
|
2612 set and next_event_internal() also returns C-g. When
|
|
|
2613 we enqueue the C-g below, it will get discarded. The
|
|
|
2614 next time through, QUIT will be called and will signal a quit. */
|
|
|
2615 switch (XEVENT_TYPE (event))
|
|
|
2616 {
|
|
|
2617 case process_event:
|
|
|
2618 {
|
|
|
2619 if (NILP (process) ||
|
|
|
2620 EQ (XEVENT (event)->event.process.process, process))
|
|
|
2621 {
|
|
|
2622 done = 1;
|
|
|
2623 /* RMS's version always returns nil when proc is nil,
|
|
|
2624 and only returns t if input ever arrived on proc. */
|
|
|
2625 result = Qt;
|
|
|
2626 }
|
|
|
2627
|
|
|
2628 execute_internal_event (event);
|
|
|
2629 break;
|
|
|
2630 }
|
|
|
2631 case timeout_event:
|
|
|
2632 /* We execute the event even if it's ours, and notice that it's
|
|
|
2633 happened above. */
|
|
|
2634 case pointer_motion_event:
|
|
|
2635 case magic_event:
|
|
|
2636 {
|
|
|
2637 execute_internal_event (event);
|
|
|
2638 break;
|
|
|
2639 }
|
|
|
2640 default:
|
|
|
2641 {
|
|
|
2642 enqueue_command_event_1 (event);
|
|
|
2643 break;
|
|
|
2644 }
|
|
|
2645 }
|
|
|
2646 }
|
|
|
2647
|
|
|
2648 unbind_to (count, timeout_enabled ? make_int (timeout_id) : Qnil);
|
|
|
2649
|
|
|
2650 Fdeallocate_event (event);
|
|
|
2651 UNGCPRO;
|
|
|
2652 current_buffer = old_buffer;
|
|
|
2653 return result;
|
|
|
2654 }
|
|
|
2655
|
|
|
2656 DEFUN ("sleep-for", Fsleep_for, 1, 1, 0, /*
|
|
444
|
2657 Pause, without updating display, for SECONDS seconds.
|
|
|
2658 SECONDS may be a float, allowing pauses for fractional parts of a second.
|
|
428
|
2659
|
|
|
2660 It is recommended that you never call sleep-for from inside of a process
|
|
444
|
2661 filter function or timer event (either synchronous or asynchronous).
|
|
428
|
2662 */
|
|
|
2663 (seconds))
|
|
|
2664 {
|
|
|
2665 /* This function can GC */
|
|
|
2666 unsigned long msecs = lisp_number_to_milliseconds (seconds, 1);
|
|
|
2667 int id;
|
|
|
2668 Lisp_Object event = Qnil;
|
|
|
2669 int count;
|
|
|
2670 struct gcpro gcpro1;
|
|
|
2671
|
|
|
2672 GCPRO1 (event);
|
|
|
2673
|
|
|
2674 id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0);
|
|
|
2675 event = Fmake_event (Qnil, Qnil);
|
|
|
2676
|
|
|
2677 count = specpdl_depth ();
|
|
|
2678 record_unwind_protect (sit_for_unwind, make_int (id));
|
|
|
2679 recursive_sit_for = Qt;
|
|
|
2680
|
|
|
2681 while (1)
|
|
|
2682 {
|
|
|
2683 /* If our timeout has arrived, we move along. */
|
|
|
2684 if (!event_stream_wakeup_pending_p (id, 0))
|
|
|
2685 goto DONE_LABEL;
|
|
|
2686
|
|
|
2687 QUIT; /* next_event_internal() does not QUIT, so check for ^G
|
|
|
2688 before reading output from the process - this makes it
|
|
|
2689 less likely that the filter will actually be aborted.
|
|
|
2690 */
|
|
|
2691 /* We're a generator of the command_event_queue, so we can't be a
|
|
|
2692 consumer as well. We don't care about command and eval-events
|
|
|
2693 anyway.
|
|
|
2694 */
|
|
|
2695 next_event_internal (event, 0); /* blocks */
|
|
|
2696 /* See the comment in accept-process-output about Vquit_flag */
|
|
|
2697 switch (XEVENT_TYPE (event))
|
|
|
2698 {
|
|
|
2699 case timeout_event:
|
|
|
2700 /* We execute the event even if it's ours, and notice that it's
|
|
|
2701 happened above. */
|
|
|
2702 case process_event:
|
|
|
2703 case pointer_motion_event:
|
|
|
2704 case magic_event:
|
|
|
2705 {
|
|
|
2706 execute_internal_event (event);
|
|
|
2707 break;
|
|
|
2708 }
|
|
|
2709 default:
|
|
|
2710 {
|
|
|
2711 enqueue_command_event_1 (event);
|
|
|
2712 break;
|
|
|
2713 }
|
|
|
2714 }
|
|
|
2715 }
|
|
|
2716 DONE_LABEL:
|
|
|
2717 unbind_to (count, make_int (id));
|
|
|
2718 Fdeallocate_event (event);
|
|
|
2719 UNGCPRO;
|
|
|
2720 return Qnil;
|
|
|
2721 }
|
|
|
2722
|
|
|
2723 DEFUN ("sit-for", Fsit_for, 1, 2, 0, /*
|
|
444
|
2724 Perform redisplay, then wait SECONDS seconds or until user input is available.
|
|
|
2725 SECONDS may be a float, meaning a fractional part of a second.
|
|
|
2726 Optional second arg NODISPLAY non-nil means don't redisplay; just wait.
|
|
428
|
2727 Redisplay is preempted as always if user input arrives, and does not
|
|
|
2728 happen if input is available before it starts.
|
|
|
2729 Value is t if waited the full time with no input arriving.
|
|
|
2730
|
|
|
2731 If sit-for is called from within a process filter function or timer
|
|
|
2732 event (either synchronous or asynchronous) it will return immediately.
|
|
|
2733 */
|
|
|
2734 (seconds, nodisplay))
|
|
|
2735 {
|
|
|
2736 /* This function can GC */
|
|
|
2737 unsigned long msecs = lisp_number_to_milliseconds (seconds, 1);
|
|
|
2738 Lisp_Object event, result;
|
|
|
2739 struct gcpro gcpro1;
|
|
|
2740 int id;
|
|
|
2741 int count;
|
|
|
2742
|
|
|
2743 /* The unread-command-events count as pending input */
|
|
|
2744 if (!NILP (Vunread_command_events) || !NILP (Vunread_command_event))
|
|
|
2745 return Qnil;
|
|
|
2746
|
|
|
2747 /* If the command-builder already has user-input on it (not eval events)
|
|
|
2748 then that means we're done too.
|
|
|
2749 */
|
|
|
2750 if (!NILP (command_event_queue))
|
|
|
2751 {
|
|
|
2752 EVENT_CHAIN_LOOP (event, command_event_queue)
|
|
|
2753 {
|
|
|
2754 if (command_event_p (event))
|
|
|
2755 return Qnil;
|
|
|
2756 }
|
|
|
2757 }
|
|
|
2758
|
|
|
2759 /* If we're in a macro, or noninteractive, or early in temacs, then
|
|
|
2760 don't wait. */
|
|
|
2761 if (noninteractive || !NILP (Vexecuting_macro))
|
|
|
2762 return Qnil;
|
|
|
2763
|
|
|
2764 /* Recursive call from a filter function or timeout handler. */
|
|
|
2765 if (!NILP(recursive_sit_for))
|
|
|
2766 {
|
|
|
2767 if (!event_stream_event_pending_p (1) && NILP (nodisplay))
|
|
|
2768 {
|
|
|
2769 run_pre_idle_hook ();
|
|
|
2770 redisplay ();
|
|
|
2771 }
|
|
|
2772 return Qnil;
|
|
|
2773 }
|
|
|
2774
|
|
|
2775
|
|
|
2776 /* Otherwise, start reading events from the event_stream.
|
|
|
2777 Do this loop at least once even if (sit-for 0) so that we
|
|
|
2778 redisplay when no input pending.
|
|
|
2779 */
|
|
|
2780 GCPRO1 (event);
|
|
|
2781 event = Fmake_event (Qnil, Qnil);
|
|
|
2782
|
|
|
2783 /* Generate the wakeup even if MSECS is 0, so that existing timeout/etc.
|
|
|
2784 events get processed. The old (pre-19.12) code special-cased this
|
|
|
2785 and didn't generate a wakeup, but the resulting behavior was less than
|
|
|
2786 ideal; viz. the occurrence of (sit-for 0.001) scattered throughout
|
|
|
2787 the E-Lisp universe. */
|
|
|
2788
|
|
|
2789 id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0);
|
|
|
2790
|
|
|
2791 count = specpdl_depth ();
|
|
|
2792 record_unwind_protect (sit_for_unwind, make_int (id));
|
|
|
2793 recursive_sit_for = Qt;
|
|
|
2794
|
|
|
2795 while (1)
|
|
|
2796 {
|
|
|
2797 /* If there is no user input pending, then redisplay.
|
|
|
2798 */
|
|
|
2799 if (!event_stream_event_pending_p (1) && NILP (nodisplay))
|
|
|
2800 {
|
|
|
2801 run_pre_idle_hook ();
|
|
|
2802 redisplay ();
|
|
|
2803 }
|
|
|
2804
|
|
|
2805 /* If our timeout has arrived, we move along. */
|
|
|
2806 if (!event_stream_wakeup_pending_p (id, 0))
|
|
|
2807 {
|
|
|
2808 result = Qt;
|
|
|
2809 goto DONE_LABEL;
|
|
|
2810 }
|
|
|
2811
|
|
|
2812 QUIT; /* next_event_internal() does not QUIT, so check for ^G
|
|
|
2813 before reading output from the process - this makes it
|
|
|
2814 less likely that the filter will actually be aborted.
|
|
|
2815 */
|
|
|
2816 /* We're a generator of the command_event_queue, so we can't be a
|
|
|
2817 consumer as well. In fact, we know there's nothing on the
|
|
|
2818 command_event_queue that we didn't just put there.
|
|
|
2819 */
|
|
|
2820 next_event_internal (event, 0); /* blocks */
|
|
|
2821 /* See the comment in accept-process-output about Vquit_flag */
|
|
|
2822
|
|
|
2823 if (command_event_p (event))
|
|
|
2824 {
|
|
|
2825 QUIT; /* If the command was C-g check it here
|
|
|
2826 so that we abort out of the sit-for,
|
|
|
2827 not the next command. sleep-for and
|
|
|
2828 accept-process-output continue looping
|
|
|
2829 so they check QUIT again implicitly.*/
|
|
|
2830 result = Qnil;
|
|
|
2831 goto DONE_LABEL;
|
|
|
2832 }
|
|
|
2833 switch (XEVENT_TYPE (event))
|
|
|
2834 {
|
|
|
2835 case eval_event:
|
|
|
2836 {
|
|
|
2837 /* eval-events get delayed until later. */
|
|
|
2838 enqueue_command_event (Fcopy_event (event, Qnil));
|
|
|
2839 break;
|
|
|
2840 }
|
|
|
2841
|
|
|
2842 case timeout_event:
|
|
|
2843 /* We execute the event even if it's ours, and notice that it's
|
|
|
2844 happened above. */
|
|
|
2845 default:
|
|
|
2846 {
|
|
|
2847 execute_internal_event (event);
|
|
|
2848 break;
|
|
|
2849 }
|
|
|
2850 }
|
|
|
2851 }
|
|
|
2852
|
|
|
2853 DONE_LABEL:
|
|
|
2854 unbind_to (count, make_int (id));
|
|
|
2855
|
|
|
2856 /* Put back the event (if any) that made Fsit_for() exit before the
|
|
|
2857 timeout. Note that it is being added to the back of the queue, which
|
|
|
2858 would be inappropriate if there were any user events on the queue
|
|
|
2859 already: we would be misordering them. But we know that there are
|
|
|
2860 no user-events on the queue, or else we would not have reached this
|
|
|
2861 point at all.
|
|
|
2862 */
|
|
|
2863 if (NILP (result))
|
|
|
2864 enqueue_command_event (event);
|
|
|
2865 else
|
|
|
2866 Fdeallocate_event (event);
|
|
|
2867
|
|
|
2868 UNGCPRO;
|
|
|
2869 return result;
|
|
|
2870 }
|
|
|
2871
|
|
442
|
2872 /* This handy little function is used by select-x.c to wait for replies
|
|
|
2873 from processes that aren't really processes (e.g. the X server) */
|
|
428
|
2874 void
|
|
|
2875 wait_delaying_user_input (int (*predicate) (void *arg), void *predicate_arg)
|
|
|
2876 {
|
|
|
2877 /* This function can GC */
|
|
|
2878 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
|
2879 struct gcpro gcpro1;
|
|
|
2880 GCPRO1 (event);
|
|
|
2881
|
|
|
2882 while (!(*predicate) (predicate_arg))
|
|
|
2883 {
|
|
|
2884 QUIT; /* next_event_internal() does not QUIT. */
|
|
|
2885
|
|
|
2886 /* We're a generator of the command_event_queue, so we can't be a
|
|
|
2887 consumer as well. Also, we have no reason to consult the
|
|
|
2888 command_event_queue; there are only user and eval-events there,
|
|
|
2889 and we'd just have to put them back anyway.
|
|
|
2890 */
|
|
|
2891 next_event_internal (event, 0);
|
|
|
2892 /* See the comment in accept-process-output about Vquit_flag */
|
|
|
2893 if (command_event_p (event)
|
|
|
2894 || (XEVENT_TYPE (event) == eval_event)
|
|
|
2895 || (XEVENT_TYPE (event) == magic_eval_event))
|
|
|
2896 enqueue_command_event_1 (event);
|
|
|
2897 else
|
|
|
2898 execute_internal_event (event);
|
|
|
2899 }
|
|
|
2900 UNGCPRO;
|
|
|
2901 }
|
|
|
2902
|
|
|
2903
|
|
|
2904 /**********************************************************************/
|
|
|
2905 /* dispatching events; command builder */
|
|
|
2906 /**********************************************************************/
|
|
|
2907
|
|
|
2908 static void
|
|
|
2909 execute_internal_event (Lisp_Object event)
|
|
|
2910 {
|
|
|
2911 /* events on dead channels get silently eaten */
|
|
|
2912 if (object_dead_p (XEVENT (event)->channel))
|
|
|
2913 return;
|
|
|
2914
|
|
|
2915 /* This function can GC */
|
|
|
2916 switch (XEVENT_TYPE (event))
|
|
|
2917 {
|
|
|
2918 case empty_event:
|
|
|
2919 return;
|
|
|
2920
|
|
|
2921 case eval_event:
|
|
|
2922 {
|
|
|
2923 call1 (XEVENT (event)->event.eval.function,
|
|
|
2924 XEVENT (event)->event.eval.object);
|
|
|
2925 return;
|
|
|
2926 }
|
|
|
2927
|
|
|
2928 case magic_eval_event:
|
|
|
2929 {
|
|
|
2930 (XEVENT (event)->event.magic_eval.internal_function)
|
|
|
2931 (XEVENT (event)->event.magic_eval.object);
|
|
|
2932 return;
|
|
|
2933 }
|
|
|
2934
|
|
|
2935 case pointer_motion_event:
|
|
|
2936 {
|
|
|
2937 if (!NILP (Vmouse_motion_handler))
|
|
|
2938 call1 (Vmouse_motion_handler, event);
|
|
|
2939 return;
|
|
|
2940 }
|
|
|
2941
|
|
|
2942 case process_event:
|
|
|
2943 {
|
|
|
2944 Lisp_Object p = XEVENT (event)->event.process.process;
|
|
|
2945 Charcount readstatus;
|
|
|
2946
|
|
|
2947 assert (PROCESSP (p));
|
|
|
2948 while ((readstatus = read_process_output (p)) > 0)
|
|
|
2949 ;
|
|
|
2950 if (readstatus > 0)
|
|
|
2951 ; /* this clauses never gets executed but allows the #ifdefs
|
|
|
2952 to work cleanly. */
|
|
|
2953 #ifdef EWOULDBLOCK
|
|
|
2954 else if (readstatus == -1 && errno == EWOULDBLOCK)
|
|
|
2955 ;
|
|
|
2956 #endif /* EWOULDBLOCK */
|
|
|
2957 #ifdef EAGAIN
|
|
|
2958 else if (readstatus == -1 && errno == EAGAIN)
|
|
|
2959 ;
|
|
|
2960 #endif /* EAGAIN */
|
|
|
2961 else if ((readstatus == 0 &&
|
|
|
2962 /* Note that we cannot distinguish between no input
|
|
|
2963 available now and a closed pipe.
|
|
|
2964 With luck, a closed pipe will be accompanied by
|
|
|
2965 subprocess termination and SIGCHLD. */
|
|
|
2966 (!network_connection_p (p) ||
|
|
|
2967 /*
|
|
|
2968 When connected to ToolTalk (i.e.
|
|
|
2969 connected_via_filedesc_p()), it's not possible to
|
|
|
2970 reliably determine whether there is a message
|
|
|
2971 waiting for ToolTalk to receive. ToolTalk expects
|
|
|
2972 to have tt_message_receive() called exactly once
|
|
|
2973 every time the file descriptor becomes active, so
|
|
|
2974 the filter function forces this by returning 0.
|
|
|
2975 Emacs must not interpret this as a closed pipe. */
|
|
|
2976 connected_via_filedesc_p (XPROCESS (p))))
|
|
|
2977 #ifdef HAVE_PTYS
|
|
|
2978 /* On some OSs with ptys, when the process on one end of
|
|
|
2979 a pty exits, the other end gets an error reading with
|
|
|
2980 errno = EIO instead of getting an EOF (0 bytes read).
|
|
|
2981 Therefore, if we get an error reading and errno =
|
|
|
2982 EIO, just continue, because the child process has
|
|
|
2983 exited and should clean itself up soon (e.g. when we
|
|
|
2984 get a SIGCHLD). */
|
|
|
2985 || (readstatus == -1 && errno == EIO)
|
|
|
2986 #endif
|
|
|
2987 )
|
|
|
2988 {
|
|
|
2989 /* Currently, we rely on SIGCHLD to indicate that the
|
|
|
2990 process has terminated. Unfortunately, on some systems
|
|
|
2991 the SIGCHLD gets missed some of the time. So we put an
|
|
|
2992 additional check in status_notify() to see whether a
|
|
|
2993 process has terminated. We must tell status_notify()
|
|
|
2994 to enable that check, and we do so now. */
|
|
|
2995 kick_status_notify ();
|
|
|
2996 }
|
|
|
2997 else
|
|
|
2998 {
|
|
|
2999 /* Deactivate network connection */
|
|
|
3000 Lisp_Object status = Fprocess_status (p);
|
|
|
3001 if (EQ (status, Qopen)
|
|
|
3002 /* In case somebody changes the theory of whether to
|
|
|
3003 return open as opposed to run for network connection
|
|
|
3004 "processes"... */
|
|
|
3005 || EQ (status, Qrun))
|
|
|
3006 update_process_status (p, Qexit, 256, 0);
|
|
|
3007 deactivate_process (p);
|
|
|
3008 }
|
|
|
3009
|
|
|
3010 /* We must call status_notify here to allow the
|
|
|
3011 event_stream->unselect_process_cb to be run if appropriate.
|
|
|
3012 Otherwise, dead fds may be selected for, and we will get a
|
|
|
3013 continuous stream of process events for them. Since we don't
|
|
|
3014 return until all process events have been flushed, we would
|
|
|
3015 get stuck here, processing events on a process whose status
|
|
|
3016 was 'exit. Call this after dispatch-event, or the fds will
|
|
|
3017 have been closed before we read the last data from them.
|
|
|
3018 It's safe for the filter to signal an error because
|
|
|
3019 status_notify() will be called on return to top-level.
|
|
|
3020 */
|
|
|
3021 status_notify ();
|
|
|
3022 return;
|
|
|
3023 }
|
|
|
3024
|
|
|
3025 case timeout_event:
|
|
|
3026 {
|
|
440
|
3027 Lisp_Event *e = XEVENT (event);
|
|
428
|
3028 if (!NILP (e->event.timeout.function))
|
|
|
3029 call1 (e->event.timeout.function,
|
|
|
3030 e->event.timeout.object);
|
|
|
3031 return;
|
|
|
3032 }
|
|
|
3033 case magic_event:
|
|
|
3034 {
|
|
|
3035 event_stream_handle_magic_event (XEVENT (event));
|
|
|
3036 return;
|
|
|
3037 }
|
|
|
3038 default:
|
|
|
3039 abort ();
|
|
|
3040 }
|
|
|
3041 }
|
|
|
3042
|
|
|
3043
|
|
|
3044
|
|
|
3045 static void
|
|
|
3046 this_command_keys_replace_suffix (Lisp_Object suffix, Lisp_Object chain)
|
|
|
3047 {
|
|
|
3048 Lisp_Object first_before_suffix =
|
|
|
3049 event_chain_find_previous (Vthis_command_keys, suffix);
|
|
|
3050
|
|
|
3051 if (NILP (first_before_suffix))
|
|
|
3052 Vthis_command_keys = chain;
|
|
|
3053 else
|
|
|
3054 XSET_EVENT_NEXT (first_before_suffix, chain);
|
|
|
3055 deallocate_event_chain (suffix);
|
|
|
3056 Vthis_command_keys_tail = event_chain_tail (chain);
|
|
|
3057 }
|
|
|
3058
|
|
|
3059 static void
|
|
|
3060 command_builder_replace_suffix (struct command_builder *builder,
|
|
|
3061 Lisp_Object suffix, Lisp_Object chain)
|
|
|
3062 {
|
|
|
3063 Lisp_Object first_before_suffix =
|
|
|
3064 event_chain_find_previous (builder->current_events, suffix);
|
|
|
3065
|
|
|
3066 if (NILP (first_before_suffix))
|
|
|
3067 builder->current_events = chain;
|
|
|
3068 else
|
|
|
3069 XSET_EVENT_NEXT (first_before_suffix, chain);
|
|
|
3070 deallocate_event_chain (suffix);
|
|
|
3071 builder->most_current_event = event_chain_tail (chain);
|
|
|
3072 }
|
|
|
3073
|
|
|
3074 static Lisp_Object
|
|
|
3075 command_builder_find_leaf_1 (struct command_builder *builder)
|
|
|
3076 {
|
|
|
3077 Lisp_Object event0 = builder->current_events;
|
|
|
3078
|
|
|
3079 if (NILP (event0))
|
|
|
3080 return Qnil;
|
|
|
3081
|
|
|
3082 return event_binding (event0, 1);
|
|
|
3083 }
|
|
|
3084
|
|
|
3085 /* See if we can do function-key-map or key-translation-map translation
|
|
|
3086 on the current events in the command builder. If so, do this, and
|
|
|
3087 return the resulting binding, if any. */
|
|
|
3088
|
|
|
3089 static Lisp_Object
|
|
|
3090 munge_keymap_translate (struct command_builder *builder,
|
|
|
3091 enum munge_me_out_the_door munge,
|
|
|
3092 int has_normal_binding_p)
|
|
|
3093 {
|
|
|
3094 Lisp_Object suffix;
|
|
|
3095
|
|
|
3096 EVENT_CHAIN_LOOP (suffix, builder->munge_me[munge].first_mungeable_event)
|
|
|
3097 {
|
|
|
3098 Lisp_Object result = munging_key_map_event_binding (suffix, munge);
|
|
|
3099
|
|
|
3100 if (NILP (result))
|
|
|
3101 continue;
|
|
|
3102
|
|
|
3103 if (KEYMAPP (result))
|
|
|
3104 {
|
|
|
3105 if (NILP (builder->last_non_munged_event)
|
|
|
3106 && !has_normal_binding_p)
|
|
|
3107 builder->last_non_munged_event = builder->most_current_event;
|
|
|
3108 }
|
|
|
3109 else
|
|
|
3110 builder->last_non_munged_event = Qnil;
|
|
|
3111
|
|
|
3112 if (!KEYMAPP (result) &&
|
|
|
3113 !VECTORP (result) &&
|
|
|
3114 !STRINGP (result))
|
|
|
3115 {
|
|
|
3116 struct gcpro gcpro1;
|
|
|
3117 GCPRO1 (suffix);
|
|
|
3118 result = call1 (result, Qnil);
|
|
|
3119 UNGCPRO;
|
|
|
3120 if (NILP (result))
|
|
|
3121 return Qnil;
|
|
|
3122 }
|
|
|
3123
|
|
|
3124 if (KEYMAPP (result))
|
|
|
3125 return result;
|
|
|
3126
|
|
|
3127 if (VECTORP (result) || STRINGP (result))
|
|
|
3128 {
|
|
|
3129 Lisp_Object new_chain = key_sequence_to_event_chain (result);
|
|
|
3130 Lisp_Object tempev;
|
|
|
3131 int n, tckn;
|
|
|
3132
|
|
|
3133 /* If the first_mungeable_event of the other munger is
|
|
|
3134 within the events we're munging, then it will point to
|
|
|
3135 deallocated events afterwards, which is bad -- so make it
|
|
|
3136 point at the beginning of the munged events. */
|
|
|
3137 EVENT_CHAIN_LOOP (tempev, suffix)
|
|
|
3138 {
|
|
|
3139 Lisp_Object *mungeable_event =
|
|
|
3140 &builder->munge_me[1 - munge].first_mungeable_event;
|
|
|
3141 if (EQ (tempev, *mungeable_event))
|
|
|
3142 {
|
|
|
3143 *mungeable_event = new_chain;
|
|
|
3144 break;
|
|
|
3145 }
|
|
|
3146 }
|
|
|
3147
|
|
|
3148 n = event_chain_count (suffix);
|
|
|
3149 command_builder_replace_suffix (builder, suffix, new_chain);
|
|
|
3150 builder->munge_me[munge].first_mungeable_event = Qnil;
|
|
|
3151 /* Now hork this-command-keys as well. */
|
|
|
3152
|
|
|
3153 /* We just assume that the events we just replaced are
|
|
|
3154 sitting in copied form at the end of this-command-keys.
|
|
|
3155 If the user did weird things with `dispatch-event' this
|
|
|
3156 may not be the case, but at least we make sure we won't
|
|
|
3157 crash. */
|
|
|
3158 new_chain = copy_event_chain (new_chain);
|
|
|
3159 tckn = event_chain_count (Vthis_command_keys);
|
|
|
3160 if (tckn >= n)
|
|
|
3161 {
|
|
|
3162 this_command_keys_replace_suffix
|
|
|
3163 (event_chain_nth (Vthis_command_keys, tckn - n),
|
|
|
3164 new_chain);
|
|
|
3165 }
|
|
|
3166
|
|
|
3167 result = command_builder_find_leaf_1 (builder);
|
|
|
3168 return result;
|
|
|
3169 }
|
|
|
3170
|
|
|
3171 signal_simple_error ((munge == MUNGE_ME_FUNCTION_KEY ?
|
|
|
3172 "Invalid binding in function-key-map" :
|
|
|
3173 "Invalid binding in key-translation-map"),
|
|
|
3174 result);
|
|
|
3175 }
|
|
|
3176
|
|
|
3177 return Qnil;
|
|
|
3178 }
|
|
|
3179
|
|
|
3180 /* Compare the current state of the command builder against the local and
|
|
|
3181 global keymaps, and return the binding. If there is no match, try again,
|
|
|
3182 case-insensitively. The return value will be one of:
|
|
|
3183 -- nil (there is no binding)
|
|
|
3184 -- a keymap (part of a command has been specified)
|
|
|
3185 -- a command (anything that satisfies `commandp'; this includes
|
|
|
3186 some symbols, lists, subrs, strings, vectors, and
|
|
|
3187 compiled-function objects)
|
|
|
3188 */
|
|
|
3189 static Lisp_Object
|
|
|
3190 command_builder_find_leaf (struct command_builder *builder,
|
|
|
3191 int allow_misc_user_events_p)
|
|
|
3192 {
|
|
|
3193 /* This function can GC */
|
|
|
3194 Lisp_Object result;
|
|
|
3195 Lisp_Object evee = builder->current_events;
|
|
|
3196
|
|
|
3197 if (XEVENT_TYPE (evee) == misc_user_event)
|
|
|
3198 {
|
|
|
3199 if (allow_misc_user_events_p && (NILP (XEVENT_NEXT (evee))))
|
|
|
3200 return list2 (XEVENT (evee)->event.eval.function,
|
|
|
3201 XEVENT (evee)->event.eval.object);
|
|
|
3202 else
|
|
|
3203 return Qnil;
|
|
|
3204 }
|
|
|
3205
|
|
442
|
3206 /* if we're currently in a menu accelerator, check there for further
|
|
|
3207 events */
|
|
|
3208 /* #### fuck me! who wrote this crap? think "abstraction", baby. */
|
|
428
|
3209 #if defined(HAVE_X_WINDOWS) && defined(LWLIB_MENUBARS_LUCID)
|
|
442
|
3210 if (x_kludge_lw_menu_active ())
|
|
428
|
3211 {
|
|
|
3212 return command_builder_operate_menu_accelerator (builder);
|
|
|
3213 }
|
|
|
3214 else
|
|
|
3215 {
|
|
|
3216 result = Qnil;
|
|
|
3217 if (EQ (Vmenu_accelerator_enabled, Qmenu_force))
|
|
|
3218 result = command_builder_find_menu_accelerator (builder);
|
|
|
3219 if (NILP (result))
|
|
|
3220 #endif
|
|
|
3221 result = command_builder_find_leaf_1 (builder);
|
|
|
3222 #if defined(HAVE_X_WINDOWS) && defined(LWLIB_MENUBARS_LUCID)
|
|
|
3223 if (NILP (result)
|
|
|
3224 && EQ (Vmenu_accelerator_enabled, Qmenu_fallback))
|
|
|
3225 result = command_builder_find_menu_accelerator (builder);
|
|
|
3226 }
|
|
|
3227 #endif
|
|
|
3228
|
|
|
3229 /* Check to see if we have a potential function-key-map match. */
|
|
|
3230 if (NILP (result))
|
|
|
3231 {
|
|
|
3232 result = munge_keymap_translate (builder, MUNGE_ME_FUNCTION_KEY, 0);
|
|
|
3233 regenerate_echo_keys_from_this_command_keys (builder);
|
|
|
3234 }
|
|
|
3235 /* Check to see if we have a potential key-translation-map match. */
|
|
|
3236 {
|
|
|
3237 Lisp_Object key_translate_result =
|
|
|
3238 munge_keymap_translate (builder, MUNGE_ME_KEY_TRANSLATION,
|
|
|
3239 !NILP (result));
|
|
|
3240 if (!NILP (key_translate_result))
|
|
|
3241 {
|
|
|
3242 result = key_translate_result;
|
|
|
3243 regenerate_echo_keys_from_this_command_keys (builder);
|
|
|
3244 }
|
|
|
3245 }
|
|
|
3246
|
|
|
3247 if (!NILP (result))
|
|
|
3248 return result;
|
|
|
3249
|
|
|
3250 /* If key-sequence wasn't bound, we'll try some fallbacks. */
|
|
|
3251
|
|
|
3252 /* If we didn't find a binding, and the last event in the sequence is
|
|
|
3253 a shifted character, then try again with the lowercase version. */
|
|
|
3254
|
|
|
3255 if (XEVENT_TYPE (builder->most_current_event) == key_press_event
|
|
|
3256 && !NILP (Vretry_undefined_key_binding_unshifted))
|
|
|
3257 {
|
|
|
3258 Lisp_Object terminal = builder->most_current_event;
|
|
|
3259 struct key_data* key = & XEVENT (terminal)->event.key;
|
|
|
3260 Emchar c = 0;
|
|
442
|
3261 if ((key->modifiers & XEMACS_MOD_SHIFT)
|
|
428
|
3262 || (CHAR_OR_CHAR_INTP (key->keysym)
|
|
|
3263 && ((c = XCHAR_OR_CHAR_INT (key->keysym)), c >= 'A' && c <= 'Z')))
|
|
|
3264 {
|
|
440
|
3265 Lisp_Event terminal_copy = *XEVENT (terminal);
|
|
428
|
3266
|
|
442
|
3267 if (key->modifiers & XEMACS_MOD_SHIFT)
|
|
|
3268 key->modifiers &= (~ XEMACS_MOD_SHIFT);
|
|
428
|
3269 else
|
|
|
3270 key->keysym = make_char (c + 'a' - 'A');
|
|
|
3271
|
|
|
3272 result = command_builder_find_leaf (builder, allow_misc_user_events_p);
|
|
|
3273 if (!NILP (result))
|
|
|
3274 return result;
|
|
|
3275 /* If there was no match with the lower-case version either,
|
|
|
3276 then put back the upper-case event for the error
|
|
|
3277 message. But make sure that function-key-map didn't
|
|
|
3278 change things out from under us. */
|
|
|
3279 if (EQ (terminal, builder->most_current_event))
|
|
|
3280 *XEVENT (terminal) = terminal_copy;
|
|
|
3281 }
|
|
|
3282 }
|
|
|
3283
|
|
|
3284 /* help-char is `auto-bound' in every keymap */
|
|
|
3285 if (!NILP (Vprefix_help_command) &&
|
|
|
3286 event_matches_key_specifier_p (XEVENT (builder->most_current_event),
|
|
|
3287 Vhelp_char))
|
|
|
3288 return Vprefix_help_command;
|
|
|
3289
|
|
|
3290 #ifdef HAVE_XIM
|
|
|
3291 /* If keysym is a non-ASCII char, bind it to self-insert-char by default. */
|
|
|
3292 if (XEVENT_TYPE (builder->most_current_event) == key_press_event
|
|
|
3293 && !NILP (Vcomposed_character_default_binding))
|
|
|
3294 {
|
|
|
3295 Lisp_Object keysym = XEVENT (builder->most_current_event)->event.key.keysym;
|
|
|
3296 if (CHARP (keysym) && !CHAR_ASCII_P (XCHAR (keysym)))
|
|
|
3297 return Vcomposed_character_default_binding;
|
|
|
3298 }
|
|
|
3299 #endif /* HAVE_XIM */
|
|
|
3300
|
|
|
3301 /* If we read extra events attempting to match a function key but end
|
|
|
3302 up failing, then we release those events back to the command loop
|
|
|
3303 and fail on the original lookup. The released events will then be
|
|
|
3304 reprocessed in the context of the first part having failed. */
|
|
|
3305 if (!NILP (builder->last_non_munged_event))
|
|
|
3306 {
|
|
|
3307 Lisp_Object event0 = builder->last_non_munged_event;
|
|
|
3308
|
|
|
3309 /* Put the commands back on the event queue. */
|
|
|
3310 enqueue_event_chain (XEVENT_NEXT (event0),
|
|
|
3311 &command_event_queue,
|
|
|
3312 &command_event_queue_tail);
|
|
|
3313
|
|
|
3314 /* Then remove them from the command builder. */
|
|
|
3315 XSET_EVENT_NEXT (event0, Qnil);
|
|
|
3316 builder->most_current_event = event0;
|
|
|
3317 builder->last_non_munged_event = Qnil;
|
|
|
3318 }
|
|
|
3319
|
|
|
3320 return Qnil;
|
|
|
3321 }
|
|
|
3322
|
|
|
3323
|
|
|
3324 /* Every time a command-event (a key, button, or menu selection) is read by
|
|
|
3325 Fnext_event(), it is stored in the recent_keys_ring, in Vlast_input_event,
|
|
|
3326 and in Vthis_command_keys. (Eval-events are not stored there.)
|
|
|
3327
|
|
|
3328 Every time a command is invoked, Vlast_command_event is set to the last
|
|
|
3329 event in the sequence.
|
|
|
3330
|
|
|
3331 This means that Vthis_command_keys is really about "input read since the
|
|
|
3332 last command was executed" rather than about "what keys invoked this
|
|
|
3333 command." This is a little counterintuitive, but that's the way it
|
|
|
3334 has always worked.
|
|
|
3335
|
|
|
3336 As an extra kink, the function read-key-sequence resets/updates the
|
|
|
3337 last-command-event and this-command-keys. It doesn't append to the
|
|
|
3338 command-keys as read-char does. Such are the pitfalls of having to
|
|
|
3339 maintain compatibility with a program for which the only specification
|
|
|
3340 is the code itself.
|
|
|
3341
|
|
|
3342 (We could implement recent_keys_ring and Vthis_command_keys as the same
|
|
|
3343 data structure.)
|
|
|
3344 */
|
|
|
3345
|
|
|
3346 DEFUN ("recent-keys", Frecent_keys, 0, 1, 0, /*
|
|
|
3347 Return a vector of recent keyboard or mouse button events read.
|
|
|
3348 If NUMBER is non-nil, not more than NUMBER events will be returned.
|
|
|
3349 Change number of events stored using `set-recent-keys-ring-size'.
|
|
|
3350
|
|
|
3351 This copies the event objects into a new vector; it is safe to keep and
|
|
|
3352 modify them.
|
|
|
3353 */
|
|
|
3354 (number))
|
|
|
3355 {
|
|
|
3356 struct gcpro gcpro1;
|
|
|
3357 Lisp_Object val = Qnil;
|
|
|
3358 int nwanted;
|
|
|
3359 int start, nkeys, i, j;
|
|
|
3360 GCPRO1 (val);
|
|
|
3361
|
|
|
3362 if (NILP (number))
|
|
|
3363 nwanted = recent_keys_ring_size;
|
|
|
3364 else
|
|
|
3365 {
|
|
|
3366 CHECK_NATNUM (number);
|
|
|
3367 nwanted = XINT (number);
|
|
|
3368 }
|
|
|
3369
|
|
|
3370 /* Create the keys ring vector, if none present. */
|
|
|
3371 if (NILP (Vrecent_keys_ring))
|
|
|
3372 {
|
|
|
3373 Vrecent_keys_ring = make_vector (recent_keys_ring_size, Qnil);
|
|
|
3374 /* And return nothing in particular. */
|
|
|
3375 return make_vector (0, Qnil);
|
|
|
3376 }
|
|
|
3377
|
|
|
3378 if (NILP (XVECTOR_DATA (Vrecent_keys_ring)[recent_keys_ring_index]))
|
|
|
3379 /* This means the vector has not yet wrapped */
|
|
|
3380 {
|
|
|
3381 nkeys = recent_keys_ring_index;
|
|
|
3382 start = 0;
|
|
|
3383 }
|
|
|
3384 else
|
|
|
3385 {
|
|
|
3386 nkeys = recent_keys_ring_size;
|
|
|
3387 start = ((recent_keys_ring_index == nkeys) ? 0 : recent_keys_ring_index);
|
|
|
3388 }
|
|
|
3389
|
|
|
3390 if (nwanted < nkeys)
|
|
|
3391 {
|
|
|
3392 start += nkeys - nwanted;
|
|
|
3393 if (start >= recent_keys_ring_size)
|
|
|
3394 start -= recent_keys_ring_size;
|
|
|
3395 nkeys = nwanted;
|
|
|
3396 }
|
|
|
3397 else
|
|
|
3398 nwanted = nkeys;
|
|
|
3399
|
|
|
3400 val = make_vector (nwanted, Qnil);
|
|
|
3401
|
|
|
3402 for (i = 0, j = start; i < nkeys; i++)
|
|
|
3403 {
|
|
|
3404 Lisp_Object e = XVECTOR_DATA (Vrecent_keys_ring)[j];
|
|
|
3405
|
|
|
3406 if (NILP (e))
|
|
|
3407 abort ();
|
|
|
3408 XVECTOR_DATA (val)[i] = Fcopy_event (e, Qnil);
|
|
|
3409 if (++j >= recent_keys_ring_size)
|
|
|
3410 j = 0;
|
|
|
3411 }
|
|
|
3412 UNGCPRO;
|
|
|
3413 return val;
|
|
|
3414 }
|
|
|
3415
|
|
|
3416
|
|
|
3417 DEFUN ("recent-keys-ring-size", Frecent_keys_ring_size, 0, 0, 0, /*
|
|
|
3418 The maximum number of events `recent-keys' can return.
|
|
|
3419 */
|
|
|
3420 ())
|
|
|
3421 {
|
|
|
3422 return make_int (recent_keys_ring_size);
|
|
|
3423 }
|
|
|
3424
|
|
|
3425 DEFUN ("set-recent-keys-ring-size", Fset_recent_keys_ring_size, 1, 1, 0, /*
|
|
|
3426 Set the maximum number of events to be stored internally.
|
|
|
3427 */
|
|
|
3428 (size))
|
|
|
3429 {
|
|
|
3430 Lisp_Object new_vector = Qnil;
|
|
|
3431 int i, j, nkeys, start, min;
|
|
|
3432 struct gcpro gcpro1;
|
|
|
3433 GCPRO1 (new_vector);
|
|
|
3434
|
|
|
3435 CHECK_INT (size);
|
|
|
3436 if (XINT (size) <= 0)
|
|
|
3437 error ("Recent keys ring size must be positive");
|
|
|
3438 if (XINT (size) == recent_keys_ring_size)
|
|
|
3439 return size;
|
|
|
3440
|
|
|
3441 new_vector = make_vector (XINT (size), Qnil);
|
|
|
3442
|
|
|
3443 if (NILP (Vrecent_keys_ring))
|
|
|
3444 {
|
|
|
3445 Vrecent_keys_ring = new_vector;
|
|
|
3446 return size;
|
|
|
3447 }
|
|
|
3448
|
|
|
3449 if (NILP (XVECTOR_DATA (Vrecent_keys_ring)[recent_keys_ring_index]))
|
|
|
3450 /* This means the vector has not yet wrapped */
|
|
|
3451 {
|
|
|
3452 nkeys = recent_keys_ring_index;
|
|
|
3453 start = 0;
|
|
|
3454 }
|
|
|
3455 else
|
|
|
3456 {
|
|
|
3457 nkeys = recent_keys_ring_size;
|
|
|
3458 start = ((recent_keys_ring_index == nkeys) ? 0 : recent_keys_ring_index);
|
|
|
3459 }
|
|
|
3460
|
|
|
3461 if (XINT (size) > nkeys)
|
|
|
3462 min = nkeys;
|
|
|
3463 else
|
|
|
3464 min = XINT (size);
|
|
|
3465
|
|
|
3466 for (i = 0, j = start; i < min; i++)
|
|
|
3467 {
|
|
|
3468 XVECTOR_DATA (new_vector)[i] = XVECTOR_DATA (Vrecent_keys_ring)[j];
|
|
|
3469 if (++j >= recent_keys_ring_size)
|
|
|
3470 j = 0;
|
|
|
3471 }
|
|
|
3472 recent_keys_ring_size = XINT (size);
|
|
|
3473 recent_keys_ring_index = (i < recent_keys_ring_size) ? i : 0;
|
|
|
3474
|
|
|
3475 Vrecent_keys_ring = new_vector;
|
|
|
3476
|
|
|
3477 UNGCPRO;
|
|
|
3478 return size;
|
|
|
3479 }
|
|
|
3480
|
|
|
3481 /* Vthis_command_keys having value Qnil means that the next time
|
|
|
3482 push_this_command_keys is called, it should start over.
|
|
|
3483 The times at which the command-keys are reset
|
|
|
3484 (instead of merely being augmented) are pretty counterintuitive.
|
|
|
3485 (More specifically:
|
|
|
3486
|
|
|
3487 -- We do not reset this-command-keys when we finish reading a
|
|
|
3488 command. This is because some commands (e.g. C-u) act
|
|
|
3489 like command prefixes; they signal this by setting prefix-arg
|
|
|
3490 to non-nil.
|
|
|
3491 -- Therefore, we reset this-command-keys when we finish
|
|
|
3492 executing a command, unless prefix-arg is set.
|
|
|
3493 -- However, if we ever do a non-local exit out of a command
|
|
|
3494 loop (e.g. an error in a command), we need to reset
|
|
|
3495 this-command-keys. We do this by calling reset_this_command_keys()
|
|
|
3496 from cmdloop.c, whenever an error causes an invocation of the
|
|
|
3497 default error handler, and whenever there's a throw to top-level.)
|
|
|
3498 */
|
|
|
3499
|
|
|
3500 void
|
|
|
3501 reset_this_command_keys (Lisp_Object console, int clear_echo_area_p)
|
|
|
3502 {
|
|
|
3503 struct command_builder *command_builder =
|
|
|
3504 XCOMMAND_BUILDER (XCONSOLE (console)->command_builder);
|
|
|
3505
|
|
|
3506 reset_key_echo (command_builder, clear_echo_area_p);
|
|
|
3507
|
|
|
3508 deallocate_event_chain (Vthis_command_keys);
|
|
|
3509 Vthis_command_keys = Qnil;
|
|
|
3510 Vthis_command_keys_tail = Qnil;
|
|
|
3511
|
|
|
3512 reset_current_events (command_builder);
|
|
|
3513 }
|
|
|
3514
|
|
|
3515 static void
|
|
|
3516 push_this_command_keys (Lisp_Object event)
|
|
|
3517 {
|
|
|
3518 Lisp_Object new = Fmake_event (Qnil, Qnil);
|
|
|
3519
|
|
|
3520 Fcopy_event (event, new);
|
|
|
3521 enqueue_event (new, &Vthis_command_keys, &Vthis_command_keys_tail);
|
|
|
3522 }
|
|
|
3523
|
|
|
3524 /* The following two functions are used in call-interactively,
|
|
|
3525 for the @ and e specifications. We used to just use
|
|
|
3526 `current-mouse-event' (i.e. the last mouse event in this-command-keys),
|
|
|
3527 but FSF does it more generally so we follow their lead. */
|
|
|
3528
|
|
|
3529 Lisp_Object
|
|
|
3530 extract_this_command_keys_nth_mouse_event (int n)
|
|
|
3531 {
|
|
|
3532 Lisp_Object event;
|
|
|
3533
|
|
|
3534 EVENT_CHAIN_LOOP (event, Vthis_command_keys)
|
|
|
3535 {
|
|
|
3536 if (EVENTP (event)
|
|
|
3537 && (XEVENT_TYPE (event) == button_press_event
|
|
|
3538 || XEVENT_TYPE (event) == button_release_event
|
|
|
3539 || XEVENT_TYPE (event) == misc_user_event))
|
|
|
3540 {
|
|
|
3541 if (!n)
|
|
|
3542 {
|
|
|
3543 /* must copy to avoid an abort() in next_event_internal() */
|
|
|
3544 if (!NILP (XEVENT_NEXT (event)))
|
|
|
3545 return Fcopy_event (event, Qnil);
|
|
|
3546 else
|
|
|
3547 return event;
|
|
|
3548 }
|
|
|
3549 n--;
|
|
|
3550 }
|
|
|
3551 }
|
|
|
3552
|
|
|
3553 return Qnil;
|
|
|
3554 }
|
|
|
3555
|
|
|
3556 Lisp_Object
|
|
|
3557 extract_vector_nth_mouse_event (Lisp_Object vector, int n)
|
|
|
3558 {
|
|
|
3559 int i;
|
|
|
3560 int len = XVECTOR_LENGTH (vector);
|
|
|
3561
|
|
|
3562 for (i = 0; i < len; i++)
|
|
|
3563 {
|
|
|
3564 Lisp_Object event = XVECTOR_DATA (vector)[i];
|
|
|
3565 if (EVENTP (event))
|
|
|
3566 switch (XEVENT_TYPE (event))
|
|
|
3567 {
|
|
|
3568 case button_press_event :
|
|
|
3569 case button_release_event :
|
|
|
3570 case misc_user_event :
|
|
|
3571 if (n == 0)
|
|
|
3572 return event;
|
|
|
3573 n--;
|
|
|
3574 break;
|
|
|
3575 default:
|
|
|
3576 continue;
|
|
|
3577 }
|
|
|
3578 }
|
|
|
3579
|
|
|
3580 return Qnil;
|
|
|
3581 }
|
|
|
3582
|
|
|
3583 static void
|
|
|
3584 push_recent_keys (Lisp_Object event)
|
|
|
3585 {
|
|
|
3586 Lisp_Object e;
|
|
|
3587
|
|
|
3588 if (NILP (Vrecent_keys_ring))
|
|
|
3589 Vrecent_keys_ring = make_vector (recent_keys_ring_size, Qnil);
|
|
|
3590
|
|
|
3591 e = XVECTOR_DATA (Vrecent_keys_ring) [recent_keys_ring_index];
|
|
|
3592
|
|
|
3593 if (NILP (e))
|
|
|
3594 {
|
|
|
3595 e = Fmake_event (Qnil, Qnil);
|
|
|
3596 XVECTOR_DATA (Vrecent_keys_ring) [recent_keys_ring_index] = e;
|
|
|
3597 }
|
|
|
3598 Fcopy_event (event, e);
|
|
|
3599 if (++recent_keys_ring_index == recent_keys_ring_size)
|
|
|
3600 recent_keys_ring_index = 0;
|
|
|
3601 }
|
|
|
3602
|
|
|
3603
|
|
|
3604 static Lisp_Object
|
|
|
3605 current_events_into_vector (struct command_builder *command_builder)
|
|
|
3606 {
|
|
|
3607 Lisp_Object vector;
|
|
|
3608 Lisp_Object event;
|
|
|
3609 int n = event_chain_count (command_builder->current_events);
|
|
|
3610
|
|
|
3611 /* Copy the vector and the events in it. */
|
|
|
3612 /* No need to copy the events, since they're already copies, and
|
|
|
3613 nobody other than the command-builder has pointers to them */
|
|
|
3614 vector = make_vector (n, Qnil);
|
|
|
3615 n = 0;
|
|
|
3616 EVENT_CHAIN_LOOP (event, command_builder->current_events)
|
|
|
3617 XVECTOR_DATA (vector)[n++] = event;
|
|
|
3618 reset_command_builder_event_chain (command_builder);
|
|
|
3619 return vector;
|
|
|
3620 }
|
|
|
3621
|
|
|
3622
|
|
|
3623 /*
|
|
|
3624 Given the current state of the command builder and a new command event
|
|
|
3625 that has just been dispatched:
|
|
|
3626
|
|
|
3627 -- add the event to the event chain forming the current command
|
|
|
3628 (doing meta-translation as necessary)
|
|
|
3629 -- return the binding of this event chain; this will be one of:
|
|
|
3630 -- nil (there is no binding)
|
|
|
3631 -- a keymap (part of a command has been specified)
|
|
|
3632 -- a command (anything that satisfies `commandp'; this includes
|
|
|
3633 some symbols, lists, subrs, strings, vectors, and
|
|
|
3634 compiled-function objects)
|
|
|
3635 */
|
|
|
3636 static Lisp_Object
|
|
|
3637 lookup_command_event (struct command_builder *command_builder,
|
|
|
3638 Lisp_Object event, int allow_misc_user_events_p)
|
|
|
3639 {
|
|
|
3640 /* This function can GC */
|
|
|
3641 struct frame *f = selected_frame ();
|
|
|
3642 /* Clear output from previous command execution */
|
|
|
3643 if (!EQ (Qcommand, echo_area_status (f))
|
|
|
3644 /* but don't let mouse-up clear what mouse-down just printed */
|
|
|
3645 && (XEVENT (event)->event_type != button_release_event))
|
|
|
3646 clear_echo_area (f, Qnil, 0);
|
|
|
3647
|
|
|
3648 /* Add the given event to the command builder.
|
|
|
3649 Extra hack: this also updates the recent_keys_ring and Vthis_command_keys
|
|
|
3650 vectors to translate "ESC x" to "M-x" (for any "x" of course).
|
|
|
3651 */
|
|
|
3652 {
|
|
|
3653 Lisp_Object recent = command_builder->most_current_event;
|
|
|
3654
|
|
|
3655 if (EVENTP (recent)
|
|
|
3656 && event_matches_key_specifier_p (XEVENT (recent), Vmeta_prefix_char))
|
|
|
3657 {
|
|
440
|
3658 Lisp_Event *e;
|
|
428
|
3659 /* When we see a sequence like "ESC x", pretend we really saw "M-x".
|
|
|
3660 DoubleThink the recent-keys and this-command-keys as well. */
|
|
|
3661
|
|
|
3662 /* Modify the previous most-recently-pushed event on the command
|
|
|
3663 builder to be a copy of this one with the meta-bit set instead of
|
|
|
3664 pushing a new event.
|
|
|
3665 */
|
|
|
3666 Fcopy_event (event, recent);
|
|
|
3667 e = XEVENT (recent);
|
|
|
3668 if (e->event_type == key_press_event)
|
|
442
|
3669 e->event.key.modifiers |= XEMACS_MOD_META;
|
|
428
|
3670 else if (e->event_type == button_press_event
|
|
|
3671 || e->event_type == button_release_event)
|
|
442
|
3672 e->event.button.modifiers |= XEMACS_MOD_META;
|
|
428
|
3673 else
|
|
|
3674 abort ();
|
|
|
3675
|
|
|
3676 {
|
|
|
3677 int tckn = event_chain_count (Vthis_command_keys);
|
|
|
3678 if (tckn >= 2)
|
|
|
3679 /* ??? very strange if it's < 2. */
|
|
|
3680 this_command_keys_replace_suffix
|
|
|
3681 (event_chain_nth (Vthis_command_keys, tckn - 2),
|
|
|
3682 Fcopy_event (recent, Qnil));
|
|
|
3683 }
|
|
|
3684
|
|
|
3685 regenerate_echo_keys_from_this_command_keys (command_builder);
|
|
|
3686 }
|
|
|
3687 else
|
|
|
3688 {
|
|
|
3689 event = Fcopy_event (event, Fmake_event (Qnil, Qnil));
|
|
|
3690
|
|
|
3691 command_builder_append_event (command_builder, event);
|
|
|
3692 }
|
|
|
3693 }
|
|
|
3694
|
|
|
3695 {
|
|
|
3696 Lisp_Object leaf = command_builder_find_leaf (command_builder,
|
|
|
3697 allow_misc_user_events_p);
|
|
|
3698 struct gcpro gcpro1;
|
|
|
3699 GCPRO1 (leaf);
|
|
|
3700
|
|
|
3701 if (KEYMAPP (leaf))
|
|
|
3702 {
|
|
442
|
3703 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID)
|
|
|
3704 if (!x_kludge_lw_menu_active ())
|
|
|
3705 #else
|
|
|
3706 if (1)
|
|
|
3707 #endif
|
|
428
|
3708 {
|
|
|
3709 Lisp_Object prompt = Fkeymap_prompt (leaf, Qt);
|
|
|
3710 if (STRINGP (prompt))
|
|
|
3711 {
|
|
|
3712 /* Append keymap prompt to key echo buffer */
|
|
|
3713 int buf_index = command_builder->echo_buf_index;
|
|
|
3714 Bytecount len = XSTRING_LENGTH (prompt);
|
|
|
3715
|
|
|
3716 if (len + buf_index + 1 <= command_builder->echo_buf_length)
|
|
|
3717 {
|
|
|
3718 Bufbyte *echo = command_builder->echo_buf + buf_index;
|
|
|
3719 memcpy (echo, XSTRING_DATA (prompt), len);
|
|
|
3720 echo[len] = 0;
|
|
|
3721 }
|
|
|
3722 maybe_echo_keys (command_builder, 1);
|
|
|
3723 }
|
|
|
3724 else
|
|
|
3725 maybe_echo_keys (command_builder, 0);
|
|
|
3726 }
|
|
442
|
3727 else if (!NILP (Vquit_flag))
|
|
|
3728 {
|
|
|
3729 Lisp_Object quit_event = Fmake_event (Qnil, Qnil);
|
|
|
3730 Lisp_Event *e = XEVENT (quit_event);
|
|
|
3731 /* if quit happened during menu acceleration, pretend we read it */
|
|
|
3732 struct console *con = XCONSOLE (Fselected_console ());
|
|
|
3733 int ch = CONSOLE_QUIT_CHAR (con);
|
|
|
3734
|
|
|
3735 character_to_event (ch, e, con, 1, 1);
|
|
|
3736 e->channel = make_console (con);
|
|
|
3737
|
|
|
3738 enqueue_command_event (quit_event);
|
|
|
3739 Vquit_flag = Qnil;
|
|
|
3740 }
|
|
428
|
3741 }
|
|
|
3742 else if (!NILP (leaf))
|
|
|
3743 {
|
|
|
3744 if (EQ (Qcommand, echo_area_status (f))
|
|
|
3745 && command_builder->echo_buf_index > 0)
|
|
|
3746 {
|
|
|
3747 /* If we had been echoing keys, echo the last one (without
|
|
|
3748 the trailing dash) and redisplay before executing the
|
|
|
3749 command. */
|
|
|
3750 command_builder->echo_buf[command_builder->echo_buf_index] = 0;
|
|
|
3751 maybe_echo_keys (command_builder, 1);
|
|
|
3752 Fsit_for (Qzero, Qt);
|
|
|
3753 }
|
|
|
3754 }
|
|
|
3755 RETURN_UNGCPRO (leaf);
|
|
|
3756 }
|
|
|
3757 }
|
|
|
3758
|
|
|
3759 static void
|
|
|
3760 execute_command_event (struct command_builder *command_builder,
|
|
|
3761 Lisp_Object event)
|
|
|
3762 {
|
|
|
3763 /* This function can GC */
|
|
|
3764 struct console *con = XCONSOLE (command_builder->console);
|
|
|
3765 struct gcpro gcpro1;
|
|
|
3766
|
|
|
3767 GCPRO1 (event); /* event may be freshly created */
|
|
444
|
3768
|
|
|
3769 /* To fix C-x @ h <scrollbar-drag> x crash. */
|
|
|
3770 if (XEVENT (event)->event_type != misc_user_event)
|
|
|
3771 reset_current_events (command_builder);
|
|
428
|
3772
|
|
|
3773 switch (XEVENT (event)->event_type)
|
|
|
3774 {
|
|
|
3775 case key_press_event:
|
|
|
3776 Vcurrent_mouse_event = Qnil;
|
|
|
3777 break;
|
|
|
3778 case button_press_event:
|
|
|
3779 case button_release_event:
|
|
|
3780 case misc_user_event:
|
|
|
3781 Vcurrent_mouse_event = Fcopy_event (event, Qnil);
|
|
|
3782 break;
|
|
|
3783 default: break;
|
|
|
3784 }
|
|
|
3785
|
|
|
3786 /* Store the last-command-event. The semantics of this is that it
|
|
|
3787 is the last event most recently involved in command-lookup. */
|
|
|
3788 if (!EVENTP (Vlast_command_event))
|
|
|
3789 Vlast_command_event = Fmake_event (Qnil, Qnil);
|
|
|
3790 if (XEVENT (Vlast_command_event)->event_type == dead_event)
|
|
|
3791 {
|
|
|
3792 Vlast_command_event = Fmake_event (Qnil, Qnil);
|
|
|
3793 error ("Someone deallocated the last-command-event!");
|
|
|
3794 }
|
|
|
3795
|
|
|
3796 if (! EQ (event, Vlast_command_event))
|
|
|
3797 Fcopy_event (event, Vlast_command_event);
|
|
|
3798
|
|
|
3799 /* Note that last-command-char will never have its high-bit set, in
|
|
|
3800 an effort to sidestep the ambiguity between M-x and oslash. */
|
|
|
3801 Vlast_command_char = Fevent_to_character (Vlast_command_event,
|
|
|
3802 Qnil, Qnil, Qnil);
|
|
|
3803
|
|
|
3804 /* Actually call the command, with all sorts of hair to preserve or clear
|
|
|
3805 the echo-area and region as appropriate and call the pre- and post-
|
|
|
3806 command-hooks. */
|
|
|
3807 {
|
|
|
3808 int old_kbd_macro = con->kbd_macro_end;
|
|
|
3809 struct window *w = XWINDOW (Fselected_window (Qnil));
|
|
|
3810
|
|
|
3811 /* We're executing a new command, so the old value is irrelevant. */
|
|
|
3812 zmacs_region_stays = 0;
|
|
|
3813
|
|
|
3814 /* If the previous command tried to force a specific window-start,
|
|
|
3815 reset the flag in case this command moves point far away from
|
|
|
3816 that position. Also, reset the window's buffer's change
|
|
|
3817 information so that we don't trigger an incremental update. */
|
|
|
3818 if (w->force_start)
|
|
|
3819 {
|
|
|
3820 w->force_start = 0;
|
|
|
3821 buffer_reset_changes (XBUFFER (w->buffer));
|
|
|
3822 }
|
|
|
3823
|
|
|
3824 pre_command_hook ();
|
|
|
3825
|
|
|
3826 if (XEVENT (event)->event_type == misc_user_event)
|
|
|
3827 {
|
|
|
3828 call1 (XEVENT (event)->event.eval.function,
|
|
|
3829 XEVENT (event)->event.eval.object);
|
|
|
3830 }
|
|
|
3831 else
|
|
|
3832 {
|
|
|
3833 Fcommand_execute (Vthis_command, Qnil, Qnil);
|
|
|
3834 }
|
|
|
3835
|
|
|
3836 post_command_hook ();
|
|
|
3837
|
|
|
3838 if (!NILP (con->prefix_arg))
|
|
|
3839 {
|
|
|
3840 /* Commands that set the prefix arg don't update last-command, don't
|
|
|
3841 reset the echoing state, and don't go into keyboard macros unless
|
|
444
|
3842 followed by another command. Also don't quit here. */
|
|
|
3843 int speccount = specpdl_depth ();
|
|
|
3844 specbind (Qinhibit_quit, Qt);
|
|
428
|
3845 maybe_echo_keys (command_builder, 0);
|
|
444
|
3846 unbind_to (speccount, Qnil);
|
|
428
|
3847
|
|
|
3848 /* If we're recording a keyboard macro, and the last command
|
|
|
3849 executed set a prefix argument, then decrement the pointer to
|
|
|
3850 the "last character really in the macro" to be just before this
|
|
|
3851 command. This is so that the ^U in "^U ^X )" doesn't go onto
|
|
|
3852 the end of macro. */
|
|
|
3853 if (!NILP (con->defining_kbd_macro))
|
|
|
3854 con->kbd_macro_end = old_kbd_macro;
|
|
|
3855 }
|
|
|
3856 else
|
|
|
3857 {
|
|
|
3858 /* Start a new command next time */
|
|
|
3859 Vlast_command = Vthis_command;
|
|
442
|
3860 Vlast_command_properties = Vthis_command_properties;
|
|
|
3861 Vthis_command_properties = Qnil;
|
|
|
3862
|
|
428
|
3863 /* Emacs 18 doesn't unconditionally clear the echoed keystrokes,
|
|
|
3864 so we don't either */
|
|
444
|
3865 if (XEVENT (event)->event_type != misc_user_event)
|
|
|
3866 reset_this_command_keys (make_console (con), 0);
|
|
428
|
3867 }
|
|
|
3868 }
|
|
|
3869
|
|
|
3870 UNGCPRO;
|
|
|
3871 }
|
|
|
3872
|
|
|
3873 /* Run the pre command hook. */
|
|
|
3874
|
|
|
3875 static void
|
|
|
3876 pre_command_hook (void)
|
|
|
3877 {
|
|
|
3878 last_point_position = BUF_PT (current_buffer);
|
|
|
3879 XSETBUFFER (last_point_position_buffer, current_buffer);
|
|
|
3880 /* This function can GC */
|
|
|
3881 safe_run_hook_trapping_errors
|
|
|
3882 ("Error in `pre-command-hook' (setting hook to nil)",
|
|
|
3883 Qpre_command_hook, 1);
|
|
442
|
3884
|
|
|
3885 /* This is a kludge, but necessary; see simple.el */
|
|
|
3886 call0 (Qhandle_pre_motion_command);
|
|
428
|
3887 }
|
|
|
3888
|
|
|
3889 /* Run the post command hook. */
|
|
|
3890
|
|
|
3891 static void
|
|
|
3892 post_command_hook (void)
|
|
|
3893 {
|
|
|
3894 /* This function can GC */
|
|
|
3895 /* Turn off region highlighting unless this command requested that
|
|
|
3896 it be left on, or we're in the minibuffer. We don't turn it off
|
|
|
3897 when we're in the minibuffer so that things like M-x write-region
|
|
|
3898 still work!
|
|
|
3899
|
|
|
3900 This could be done via a function on the post-command-hook, but
|
|
|
3901 we don't want the user to accidentally remove it.
|
|
|
3902 */
|
|
|
3903
|
|
|
3904 Lisp_Object win = Fselected_window (Qnil);
|
|
|
3905
|
|
|
3906 /* If the last command deleted the frame, `win' might be nil.
|
|
|
3907 It seems safest to do nothing in this case. */
|
|
442
|
3908 /* Note: Someone added the following comment and put #if 0's around
|
|
|
3909 this code, not realizing that doing this invites a crash in the
|
|
|
3910 line after. */
|
|
440
|
3911 /* #### This doesn't really fix the problem,
|
|
428
|
3912 if delete-frame is called by some hook */
|
|
|
3913 if (NILP (win))
|
|
|
3914 return;
|
|
442
|
3915
|
|
|
3916 /* This is a kludge, but necessary; see simple.el */
|
|
|
3917 call0 (Qhandle_post_motion_command);
|
|
428
|
3918
|
|
|
3919 if (! zmacs_region_stays
|
|
|
3920 && (!MINI_WINDOW_P (XWINDOW (win))
|
|
|
3921 || EQ (zmacs_region_buffer (), WINDOW_BUFFER (XWINDOW (win)))))
|
|
|
3922 zmacs_deactivate_region ();
|
|
|
3923 else
|
|
|
3924 zmacs_update_region ();
|
|
|
3925
|
|
|
3926 safe_run_hook_trapping_errors
|
|
|
3927 ("Error in `post-command-hook' (setting hook to nil)",
|
|
|
3928 Qpost_command_hook, 1);
|
|
|
3929
|
|
|
3930 /* #### Kludge!!! This is necessary to make sure that things
|
|
|
3931 are properly positioned even if post-command-hook moves point.
|
|
|
3932 #### There should be a cleaner way of handling this. */
|
|
|
3933 call0 (Qauto_show_make_point_visible);
|
|
|
3934 }
|
|
|
3935
|
|
|
3936
|
|
|
3937 DEFUN ("dispatch-event", Fdispatch_event, 1, 1, 0, /*
|
|
444
|
3938 Given an event object EVENT as returned by `next-event', execute it.
|
|
428
|
3939
|
|
|
3940 Key-press, button-press, and button-release events get accumulated
|
|
|
3941 until a complete key sequence (see `read-key-sequence') is reached,
|
|
|
3942 at which point the sequence is looked up in the current keymaps and
|
|
|
3943 acted upon.
|
|
|
3944
|
|
|
3945 Mouse motion events cause the low-level handling function stored in
|
|
|
3946 `mouse-motion-handler' to be called. (There are very few circumstances
|
|
|
3947 under which you should change this handler. Use `mode-motion-hook'
|
|
|
3948 instead.)
|
|
|
3949
|
|
|
3950 Menu, timeout, and eval events cause the associated function or handler
|
|
|
3951 to be called.
|
|
|
3952
|
|
|
3953 Process events cause the subprocess's output to be read and acted upon
|
|
|
3954 appropriately (see `start-process').
|
|
|
3955
|
|
|
3956 Magic events are handled as necessary.
|
|
|
3957 */
|
|
|
3958 (event))
|
|
|
3959 {
|
|
|
3960 /* This function can GC */
|
|
|
3961 struct command_builder *command_builder;
|
|
440
|
3962 Lisp_Event *ev;
|
|
428
|
3963 Lisp_Object console;
|
|
|
3964 Lisp_Object channel;
|
|
|
3965
|
|
|
3966 CHECK_LIVE_EVENT (event);
|
|
|
3967 ev = XEVENT (event);
|
|
|
3968
|
|
|
3969 /* events on dead channels get silently eaten */
|
|
|
3970 channel = EVENT_CHANNEL (ev);
|
|
|
3971 if (object_dead_p (channel))
|
|
|
3972 return Qnil;
|
|
|
3973
|
|
|
3974 /* Some events don't have channels (e.g. eval events). */
|
|
|
3975 console = CDFW_CONSOLE (channel);
|
|
|
3976 if (NILP (console))
|
|
|
3977 console = Vselected_console;
|
|
|
3978 else if (!EQ (console, Vselected_console))
|
|
|
3979 Fselect_console (console);
|
|
|
3980
|
|
|
3981 command_builder = XCOMMAND_BUILDER (XCONSOLE (console)->command_builder);
|
|
|
3982 switch (XEVENT (event)->event_type)
|
|
|
3983 {
|
|
|
3984 case button_press_event:
|
|
|
3985 case button_release_event:
|
|
|
3986 case key_press_event:
|
|
|
3987 {
|
|
|
3988 Lisp_Object leaf = lookup_command_event (command_builder, event, 1);
|
|
|
3989
|
|
|
3990 if (KEYMAPP (leaf))
|
|
|
3991 /* Incomplete key sequence */
|
|
|
3992 break;
|
|
|
3993 if (NILP (leaf))
|
|
|
3994 {
|
|
|
3995 /* At this point, we know that the sequence is not bound to a
|
|
|
3996 command. Normally, we beep and print a message informing the
|
|
|
3997 user of this. But we do not beep or print a message when:
|
|
|
3998
|
|
|
3999 o the last event in this sequence is a mouse-up event; or
|
|
|
4000 o the last event in this sequence is a mouse-down event and
|
|
|
4001 there is a binding for the mouse-up version.
|
|
|
4002
|
|
|
4003 That is, if the sequence ``C-x button1'' is typed, and is not
|
|
|
4004 bound to a command, but the sequence ``C-x button1up'' is bound
|
|
|
4005 to a command, we do not complain about the ``C-x button1''
|
|
|
4006 sequence. If neither ``C-x button1'' nor ``C-x button1up'' is
|
|
|
4007 bound to a command, then we complain about the ``C-x button1''
|
|
|
4008 sequence, but later will *not* complain about the
|
|
|
4009 ``C-x button1up'' sequence, which would be redundant.
|
|
|
4010
|
|
|
4011 This is pretty hairy, but I think it's the most intuitive
|
|
|
4012 behavior.
|
|
|
4013 */
|
|
|
4014 Lisp_Object terminal = command_builder->most_current_event;
|
|
|
4015
|
|
|
4016 if (XEVENT_TYPE (terminal) == button_press_event)
|
|
|
4017 {
|
|
|
4018 int no_bitching;
|
|
|
4019 /* Temporarily pretend the last event was an "up" instead of a
|
|
|
4020 "down", and look up its binding. */
|
|
|
4021 XEVENT_TYPE (terminal) = button_release_event;
|
|
|
4022 /* If the "up" version is bound, don't complain. */
|
|
|
4023 no_bitching
|
|
|
4024 = !NILP (command_builder_find_leaf (command_builder, 0));
|
|
|
4025 /* Undo the temporary changes we just made. */
|
|
|
4026 XEVENT_TYPE (terminal) = button_press_event;
|
|
|
4027 if (no_bitching)
|
|
|
4028 {
|
|
|
4029 /* Pretend this press was not seen (treat as a prefix) */
|
|
|
4030 if (EQ (command_builder->current_events, terminal))
|
|
|
4031 {
|
|
|
4032 reset_current_events (command_builder);
|
|
|
4033 }
|
|
|
4034 else
|
|
|
4035 {
|
|
|
4036 Lisp_Object eve;
|
|
|
4037
|
|
|
4038 EVENT_CHAIN_LOOP (eve, command_builder->current_events)
|
|
|
4039 if (EQ (XEVENT_NEXT (eve), terminal))
|
|
|
4040 break;
|
|
|
4041
|
|
|
4042 Fdeallocate_event (command_builder->
|
|
|
4043 most_current_event);
|
|
|
4044 XSET_EVENT_NEXT (eve, Qnil);
|
|
|
4045 command_builder->most_current_event = eve;
|
|
|
4046 }
|
|
|
4047 maybe_echo_keys (command_builder, 1);
|
|
|
4048 break;
|
|
|
4049 }
|
|
|
4050 }
|
|
|
4051
|
|
|
4052 /* Complain that the typed sequence is not defined, if this is the
|
|
|
4053 kind of sequence that warrants a complaint. */
|
|
|
4054 XCONSOLE (console)->defining_kbd_macro = Qnil;
|
|
|
4055 XCONSOLE (console)->prefix_arg = Qnil;
|
|
|
4056 /* Don't complain about undefined button-release events */
|
|
|
4057 if (XEVENT_TYPE (terminal) != button_release_event)
|
|
|
4058 {
|
|
|
4059 Lisp_Object keys = current_events_into_vector (command_builder);
|
|
|
4060 struct gcpro gcpro1;
|
|
|
4061
|
|
|
4062 /* Run the pre-command-hook before barfing about an undefined
|
|
|
4063 key. */
|
|
|
4064 Vthis_command = Qnil;
|
|
|
4065 GCPRO1 (keys);
|
|
|
4066 pre_command_hook ();
|
|
|
4067 UNGCPRO;
|
|
|
4068 /* The post-command-hook doesn't run. */
|
|
|
4069 Fsignal (Qundefined_keystroke_sequence, list1 (keys));
|
|
|
4070 }
|
|
|
4071 /* Reset the command builder for reading the next sequence. */
|
|
|
4072 reset_this_command_keys (console, 1);
|
|
|
4073 }
|
|
|
4074 else /* key sequence is bound to a command */
|
|
|
4075 {
|
|
430
|
4076 int magic_undo = 0;
|
|
|
4077 int magic_undo_count = 20;
|
|
|
4078
|
|
428
|
4079 Vthis_command = leaf;
|
|
430
|
4080
|
|
428
|
4081 /* Don't push an undo boundary if the command set the prefix arg,
|
|
|
4082 or if we are executing a keyboard macro, or if in the
|
|
|
4083 minibuffer. If the command we are about to execute is
|
|
|
4084 self-insert, it's tricky: up to 20 consecutive self-inserts may
|
|
|
4085 be done without an undo boundary. This counter is reset as
|
|
|
4086 soon as a command other than self-insert-command is executed.
|
|
430
|
4087
|
|
442
|
4088 Programmers can also use the `self-insert-defer-undo'
|
|
|
4089 property to install that behavior on functions other
|
|
430
|
4090 than `self-insert-command', or to change the magic
|
|
442
|
4091 number 20 to something else. #### DOCUMENT THIS! */
|
|
430
|
4092
|
|
|
4093 if (SYMBOLP (leaf))
|
|
|
4094 {
|
|
|
4095 Lisp_Object prop = Fget (leaf, Qself_insert_defer_undo, Qnil);
|
|
|
4096 if (NATNUMP (prop))
|
|
|
4097 magic_undo = 1, magic_undo_count = XINT (prop);
|
|
|
4098 else if (!NILP (prop))
|
|
|
4099 magic_undo = 1;
|
|
|
4100 else if (EQ (leaf, Qself_insert_command))
|
|
|
4101 magic_undo = 1;
|
|
|
4102 }
|
|
|
4103
|
|
|
4104 if (!magic_undo)
|
|
428
|
4105 command_builder->self_insert_countdown = 0;
|
|
|
4106 if (NILP (XCONSOLE (console)->prefix_arg)
|
|
|
4107 && NILP (Vexecuting_macro)
|
|
|
4108 && command_builder->self_insert_countdown == 0)
|
|
|
4109 Fundo_boundary ();
|
|
|
4110
|
|
430
|
4111 if (magic_undo)
|
|
428
|
4112 {
|
|
|
4113 if (--command_builder->self_insert_countdown < 0)
|
|
430
|
4114 command_builder->self_insert_countdown = magic_undo_count;
|
|
428
|
4115 }
|
|
|
4116 execute_command_event
|
|
|
4117 (command_builder,
|
|
444
|
4118 internal_equal (event, command_builder->most_current_event, 0)
|
|
428
|
4119 ? event
|
|
|
4120 /* Use the translated event that was most recently seen.
|
|
|
4121 This way, last-command-event becomes f1 instead of
|
|
|
4122 the P from ESC O P. But we must copy it, else we'll
|
|
|
4123 lose when the command-builder events are deallocated. */
|
|
444
|
4124 : Fcopy_event (command_builder->most_current_event, Qnil));
|
|
428
|
4125 }
|
|
|
4126 break;
|
|
|
4127 }
|
|
|
4128 case misc_user_event:
|
|
|
4129 {
|
|
|
4130 /* Jamie said:
|
|
|
4131
|
|
|
4132 We could just always use the menu item entry, whatever it is, but
|
|
|
4133 this might break some Lisp code that expects `this-command' to
|
|
|
4134 always contain a symbol. So only store it if this is a simple
|
|
|
4135 `call-interactively' sort of menu item.
|
|
|
4136
|
|
|
4137 But this is bogus. `this-command' could be a string or vector
|
|
|
4138 anyway (for keyboard macros). There's even one instance
|
|
|
4139 (in pending-del.el) of `this-command' getting set to a cons
|
|
|
4140 (a lambda expression). So in the `eval' case I'll just
|
|
|
4141 convert it into a lambda expression.
|
|
|
4142 */
|
|
|
4143 if (EQ (XEVENT (event)->event.eval.function, Qcall_interactively)
|
|
|
4144 && SYMBOLP (XEVENT (event)->event.eval.object))
|
|
|
4145 Vthis_command = XEVENT (event)->event.eval.object;
|
|
|
4146 else if (EQ (XEVENT (event)->event.eval.function, Qeval))
|
|
|
4147 Vthis_command =
|
|
|
4148 Fcons (Qlambda, Fcons (Qnil, XEVENT (event)->event.eval.object));
|
|
|
4149 else if (SYMBOLP (XEVENT (event)->event.eval.function))
|
|
|
4150 /* A scrollbar command or the like. */
|
|
|
4151 Vthis_command = XEVENT (event)->event.eval.function;
|
|
|
4152 else
|
|
|
4153 /* Huh? */
|
|
|
4154 Vthis_command = Qnil;
|
|
|
4155
|
|
|
4156 /* clear the echo area */
|
|
|
4157 reset_key_echo (command_builder, 1);
|
|
|
4158
|
|
|
4159 command_builder->self_insert_countdown = 0;
|
|
|
4160 if (NILP (XCONSOLE (console)->prefix_arg)
|
|
|
4161 && NILP (Vexecuting_macro)
|
|
|
4162 && !EQ (minibuf_window, Fselected_window (Qnil)))
|
|
|
4163 Fundo_boundary ();
|
|
|
4164 execute_command_event (command_builder, event);
|
|
|
4165 break;
|
|
|
4166 }
|
|
|
4167 default:
|
|
|
4168 {
|
|
|
4169 execute_internal_event (event);
|
|
|
4170 break;
|
|
|
4171 }
|
|
|
4172 }
|
|
|
4173 return Qnil;
|
|
|
4174 }
|
|
|
4175
|
|
|
4176 DEFUN ("read-key-sequence", Fread_key_sequence, 1, 3, 0, /*
|
|
|
4177 Read a sequence of keystrokes or mouse clicks.
|
|
|
4178 Returns a vector of the event objects read. The vector and the event
|
|
444
|
4179 objects it contains are freshly created (and so will not be side-effected
|
|
428
|
4180 by subsequent calls to this function).
|
|
|
4181
|
|
|
4182 The sequence read is sufficient to specify a non-prefix command starting
|
|
|
4183 from the current local and global keymaps. A C-g typed while in this
|
|
|
4184 function is treated like any other character, and `quit-flag' is not set.
|
|
|
4185
|
|
|
4186 First arg PROMPT is a prompt string. If nil, do not prompt specially.
|
|
444
|
4187
|
|
|
4188 Second optional arg CONTINUE-ECHO non-nil means this key echoes as a
|
|
|
4189 continuation of the previous key.
|
|
|
4190
|
|
|
4191 Third optional arg DONT-DOWNCASE-LAST non-nil means do not convert the
|
|
|
4192 last event to lower case. (Normally any upper case event is converted
|
|
|
4193 to lower case if the original event is undefined and the lower case
|
|
|
4194 equivalent is defined.) This argument is provided mostly for FSF
|
|
|
4195 compatibility; the equivalent effect can be achieved more generally by
|
|
|
4196 binding `retry-undefined-key-binding-unshifted' to nil around the call
|
|
|
4197 to `read-key-sequence'.
|
|
428
|
4198
|
|
|
4199 If the user selects a menu item while we are prompting for a key-sequence,
|
|
|
4200 the returned value will be a vector of a single menu-selection event.
|
|
|
4201 An error will be signalled if you pass this value to `lookup-key' or a
|
|
|
4202 related function.
|
|
|
4203
|
|
|
4204 `read-key-sequence' checks `function-key-map' for function key
|
|
444
|
4205 sequences, where they wouldn't conflict with ordinary bindings.
|
|
|
4206 See `function-key-map' for more details.
|
|
428
|
4207 */
|
|
|
4208 (prompt, continue_echo, dont_downcase_last))
|
|
|
4209 {
|
|
|
4210 /* This function can GC */
|
|
|
4211 struct console *con = XCONSOLE (Vselected_console); /* #### correct?
|
|
|
4212 Probably not -- see
|
|
|
4213 comment in
|
|
|
4214 next-event */
|
|
|
4215 struct command_builder *command_builder =
|
|
|
4216 XCOMMAND_BUILDER (con->command_builder);
|
|
|
4217 Lisp_Object result;
|
|
|
4218 Lisp_Object event = Fmake_event (Qnil, Qnil);
|
|
|
4219 int speccount = specpdl_depth ();
|
|
|
4220 struct gcpro gcpro1;
|
|
|
4221 GCPRO1 (event);
|
|
|
4222
|
|
|
4223 if (!NILP (prompt))
|
|
|
4224 CHECK_STRING (prompt);
|
|
|
4225 /* else prompt = Fkeymap_prompt (current_buffer->keymap); may GC */
|
|
|
4226 QUIT;
|
|
|
4227
|
|
|
4228 if (NILP (continue_echo))
|
|
|
4229 reset_this_command_keys (make_console (con), 1);
|
|
|
4230
|
|
|
4231 specbind (Qinhibit_quit, Qt);
|
|
|
4232
|
|
|
4233 if (!NILP (dont_downcase_last))
|
|
|
4234 specbind (Qretry_undefined_key_binding_unshifted, Qnil);
|
|
|
4235
|
|
|
4236 for (;;)
|
|
|
4237 {
|
|
|
4238 Fnext_event (event, prompt);
|
|
|
4239 /* restore the selected-console damage */
|
|
|
4240 con = event_console_or_selected (event);
|
|
|
4241 command_builder = XCOMMAND_BUILDER (con->command_builder);
|
|
|
4242 if (! command_event_p (event))
|
|
|
4243 execute_internal_event (event);
|
|
|
4244 else
|
|
|
4245 {
|
|
|
4246 if (XEVENT (event)->event_type == misc_user_event)
|
|
|
4247 reset_current_events (command_builder);
|
|
|
4248 result = lookup_command_event (command_builder, event, 1);
|
|
|
4249 if (!KEYMAPP (result))
|
|
|
4250 {
|
|
|
4251 result = current_events_into_vector (command_builder);
|
|
|
4252 reset_key_echo (command_builder, 0);
|
|
|
4253 break;
|
|
|
4254 }
|
|
|
4255 prompt = Qnil;
|
|
|
4256 }
|
|
|
4257 }
|
|
|
4258
|
|
|
4259 Vquit_flag = Qnil; /* In case we read a ^G; do not call check_quit() here */
|
|
|
4260 Fdeallocate_event (event);
|
|
|
4261 RETURN_UNGCPRO (unbind_to (speccount, result));
|
|
|
4262 }
|
|
|
4263
|
|
|
4264 DEFUN ("this-command-keys", Fthis_command_keys, 0, 0, 0, /*
|
|
|
4265 Return a vector of the keyboard or mouse button events that were used
|
|
|
4266 to invoke this command. This copies the vector and the events; it is safe
|
|
|
4267 to keep and modify them.
|
|
|
4268 */
|
|
|
4269 ())
|
|
|
4270 {
|
|
|
4271 Lisp_Object event;
|
|
|
4272 Lisp_Object result;
|
|
|
4273 int len;
|
|
|
4274
|
|
|
4275 if (NILP (Vthis_command_keys))
|
|
|
4276 return make_vector (0, Qnil);
|
|
|
4277
|
|
|
4278 len = event_chain_count (Vthis_command_keys);
|
|
|
4279
|
|
|
4280 result = make_vector (len, Qnil);
|
|
|
4281 len = 0;
|
|
|
4282 EVENT_CHAIN_LOOP (event, Vthis_command_keys)
|
|
|
4283 XVECTOR_DATA (result)[len++] = Fcopy_event (event, Qnil);
|
|
|
4284 return result;
|
|
|
4285 }
|
|
|
4286
|
|
|
4287 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths, 0, 0, 0, /*
|
|
|
4288 Used for complicated reasons in `universal-argument-other-key'.
|
|
|
4289
|
|
|
4290 `universal-argument-other-key' rereads the event just typed.
|
|
|
4291 It then gets translated through `function-key-map'.
|
|
|
4292 The translated event gets included in the echo area and in
|
|
|
4293 the value of `this-command-keys' in addition to the raw original event.
|
|
|
4294 That is not right.
|
|
|
4295
|
|
|
4296 Calling this function directs the translated event to replace
|
|
|
4297 the original event, so that only one version of the event actually
|
|
430
|
4298 appears in the echo area and in the value of `this-command-keys'.
|
|
428
|
4299 */
|
|
|
4300 ())
|
|
|
4301 {
|
|
|
4302 /* #### I don't understand this at all, so currently it does nothing.
|
|
|
4303 If there is ever a problem, maybe someone should investigate. */
|
|
|
4304 return Qnil;
|
|
|
4305 }
|
|
|
4306
|
|
|
4307
|
|
|
4308 static void
|
|
|
4309 dribble_out_event (Lisp_Object event)
|
|
|
4310 {
|
|
|
4311 if (NILP (Vdribble_file))
|
|
|
4312 return;
|
|
|
4313
|
|
|
4314 if (XEVENT (event)->event_type == key_press_event &&
|
|
|
4315 !XEVENT (event)->event.key.modifiers)
|
|
|
4316 {
|
|
|
4317 Lisp_Object keysym = XEVENT (event)->event.key.keysym;
|
|
|
4318 if (CHARP (XEVENT (event)->event.key.keysym))
|
|
|
4319 {
|
|
|
4320 Emchar ch = XCHAR (keysym);
|
|
|
4321 Bufbyte str[MAX_EMCHAR_LEN];
|
|
|
4322 Bytecount len = set_charptr_emchar (str, ch);
|
|
|
4323 Lstream_write (XLSTREAM (Vdribble_file), str, len);
|
|
|
4324 }
|
|
|
4325 else if (string_char_length (XSYMBOL (keysym)->name) == 1)
|
|
|
4326 /* one-char key events are printed with just the key name */
|
|
|
4327 Fprinc (keysym, Vdribble_file);
|
|
|
4328 else if (EQ (keysym, Qreturn))
|
|
|
4329 Lstream_putc (XLSTREAM (Vdribble_file), '\n');
|
|
|
4330 else if (EQ (keysym, Qspace))
|
|
|
4331 Lstream_putc (XLSTREAM (Vdribble_file), ' ');
|
|
|
4332 else
|
|
|
4333 Fprinc (event, Vdribble_file);
|
|
|
4334 }
|
|
|
4335 else
|
|
|
4336 Fprinc (event, Vdribble_file);
|
|
|
4337 Lstream_flush (XLSTREAM (Vdribble_file));
|
|
|
4338 }
|
|
|
4339
|
|
|
4340 DEFUN ("open-dribble-file", Fopen_dribble_file, 1, 1,
|
|
|
4341 "FOpen dribble file: ", /*
|
|
444
|
4342 Start writing all keyboard characters to a dribble file called FILENAME.
|
|
|
4343 If FILENAME is nil, close any open dribble file.
|
|
428
|
4344 */
|
|
444
|
4345 (filename))
|
|
428
|
4346 {
|
|
|
4347 /* This function can GC */
|
|
|
4348 /* XEmacs change: always close existing dribble file. */
|
|
|
4349 /* FSFmacs uses FILE *'s here. With lstreams, that's unnecessary. */
|
|
|
4350 if (!NILP (Vdribble_file))
|
|
|
4351 {
|
|
|
4352 Lstream_close (XLSTREAM (Vdribble_file));
|
|
|
4353 Vdribble_file = Qnil;
|
|
|
4354 }
|
|
444
|
4355 if (!NILP (filename))
|
|
428
|
4356 {
|
|
|
4357 int fd;
|
|
|
4358
|
|
444
|
4359 filename = Fexpand_file_name (filename, Qnil);
|
|
|
4360 fd = open ((char*) XSTRING_DATA (filename),
|
|
428
|
4361 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
4362 CREAT_MODE);
|
|
|
4363 if (fd < 0)
|
|
|
4364 error ("Unable to create dribble file");
|
|
|
4365 Vdribble_file = make_filedesc_output_stream (fd, 0, 0, LSTR_CLOSING);
|
|
|
4366 #ifdef MULE
|
|
|
4367 Vdribble_file =
|
|
|
4368 make_encoding_output_stream (XLSTREAM (Vdribble_file),
|
|
|
4369 Fget_coding_system (Qescape_quoted));
|
|
|
4370 #endif
|
|
|
4371 }
|
|
|
4372 return Qnil;
|
|
|
4373 }
|
|
|
4374
|
|
|
4375
|
|
442
|
4376
|
|
|
4377 DEFUN ("current-event-timestamp", Fcurrent_event_timestamp, 0, 1, 0, /*
|
|
|
4378 Return the current event timestamp of the window system associated with CONSOLE.
|
|
|
4379 CONSOLE defaults to the selected console if omitted.
|
|
|
4380 */
|
|
|
4381 (console))
|
|
|
4382 {
|
|
|
4383 struct console *c = decode_console (console);
|
|
|
4384 int tiempo = event_stream_current_event_timestamp (c);
|
|
|
4385
|
|
|
4386 /* This junk is so that timestamps don't get to be negative, but contain
|
|
|
4387 as many bits as this particular emacs will allow.
|
|
|
4388 */
|
|
|
4389 return make_int (((1L << (VALBITS - 1)) - 1) & tiempo);
|
|
|
4390 }
|
|
|
4391
|
|
|
4392
|
|
428
|
4393 /************************************************************************/
|
|
|
4394 /* initialization */
|
|
|
4395 /************************************************************************/
|
|
|
4396
|
|
|
4397 void
|
|
|
4398 syms_of_event_stream (void)
|
|
|
4399 {
|
|
442
|
4400 INIT_LRECORD_IMPLEMENTATION (command_builder);
|
|
|
4401 INIT_LRECORD_IMPLEMENTATION (timeout);
|
|
|
4402
|
|
428
|
4403 defsymbol (&Qdisabled, "disabled");
|
|
|
4404 defsymbol (&Qcommand_event_p, "command-event-p");
|
|
|
4405
|
|
442
|
4406 DEFERROR_STANDARD (Qundefined_keystroke_sequence, Qinvalid_argument);
|
|
428
|
4407
|
|
|
4408 DEFSUBR (Frecent_keys);
|
|
|
4409 DEFSUBR (Frecent_keys_ring_size);
|
|
|
4410 DEFSUBR (Fset_recent_keys_ring_size);
|
|
|
4411 DEFSUBR (Finput_pending_p);
|
|
|
4412 DEFSUBR (Fenqueue_eval_event);
|
|
|
4413 DEFSUBR (Fnext_event);
|
|
|
4414 DEFSUBR (Fnext_command_event);
|
|
|
4415 DEFSUBR (Fdiscard_input);
|
|
|
4416 DEFSUBR (Fsit_for);
|
|
|
4417 DEFSUBR (Fsleep_for);
|
|
|
4418 DEFSUBR (Faccept_process_output);
|
|
|
4419 DEFSUBR (Fadd_timeout);
|
|
|
4420 DEFSUBR (Fdisable_timeout);
|
|
|
4421 DEFSUBR (Fadd_async_timeout);
|
|
|
4422 DEFSUBR (Fdisable_async_timeout);
|
|
|
4423 DEFSUBR (Fdispatch_event);
|
|
442
|
4424 DEFSUBR (Fdispatch_non_command_events);
|
|
428
|
4425 DEFSUBR (Fread_key_sequence);
|
|
|
4426 DEFSUBR (Fthis_command_keys);
|
|
|
4427 DEFSUBR (Freset_this_command_lengths);
|
|
|
4428 DEFSUBR (Fopen_dribble_file);
|
|
442
|
4429 DEFSUBR (Fcurrent_event_timestamp);
|
|
428
|
4430
|
|
|
4431 defsymbol (&Qpre_command_hook, "pre-command-hook");
|
|
|
4432 defsymbol (&Qpost_command_hook, "post-command-hook");
|
|
|
4433 defsymbol (&Qunread_command_events, "unread-command-events");
|
|
|
4434 defsymbol (&Qunread_command_event, "unread-command-event");
|
|
|
4435 defsymbol (&Qpre_idle_hook, "pre-idle-hook");
|
|
442
|
4436 defsymbol (&Qhandle_pre_motion_command, "handle-pre-motion-command");
|
|
|
4437 defsymbol (&Qhandle_post_motion_command, "handle-post-motion-command");
|
|
428
|
4438 defsymbol (&Qretry_undefined_key_binding_unshifted,
|
|
|
4439 "retry-undefined-key-binding-unshifted");
|
|
|
4440 defsymbol (&Qauto_show_make_point_visible,
|
|
|
4441 "auto-show-make-point-visible");
|
|
|
4442
|
|
430
|
4443 defsymbol (&Qself_insert_defer_undo, "self-insert-defer-undo");
|
|
428
|
4444 defsymbol (&Qcancel_mode_internal, "cancel-mode-internal");
|
|
|
4445 }
|
|
|
4446
|
|
|
4447 void
|
|
|
4448 reinit_vars_of_event_stream (void)
|
|
|
4449 {
|
|
|
4450 recent_keys_ring_index = 0;
|
|
|
4451 recent_keys_ring_size = 100;
|
|
|
4452 num_input_chars = 0;
|
|
440
|
4453 Vtimeout_free_list = make_lcrecord_list (sizeof (Lisp_Timeout),
|
|
428
|
4454 &lrecord_timeout);
|
|
|
4455 staticpro_nodump (&Vtimeout_free_list);
|
|
|
4456 the_low_level_timeout_blocktype =
|
|
|
4457 Blocktype_new (struct low_level_timeout_blocktype);
|
|
|
4458 something_happened = 0;
|
|
|
4459 recursive_sit_for = Qnil;
|
|
|
4460 }
|
|
|
4461
|
|
|
4462 void
|
|
|
4463 vars_of_event_stream (void)
|
|
|
4464 {
|
|
|
4465 reinit_vars_of_event_stream ();
|
|
|
4466 Vrecent_keys_ring = Qnil;
|
|
|
4467 staticpro (&Vrecent_keys_ring);
|
|
|
4468
|
|
|
4469 Vthis_command_keys = Qnil;
|
|
|
4470 staticpro (&Vthis_command_keys);
|
|
|
4471 Vthis_command_keys_tail = Qnil;
|
|
|
4472 pdump_wire (&Vthis_command_keys_tail);
|
|
|
4473
|
|
|
4474 command_event_queue = Qnil;
|
|
|
4475 staticpro (&command_event_queue);
|
|
|
4476 command_event_queue_tail = Qnil;
|
|
|
4477 pdump_wire (&command_event_queue_tail);
|
|
|
4478
|
|
|
4479 Vlast_selected_frame = Qnil;
|
|
|
4480 staticpro (&Vlast_selected_frame);
|
|
|
4481
|
|
|
4482 pending_timeout_list = Qnil;
|
|
|
4483 staticpro (&pending_timeout_list);
|
|
|
4484
|
|
|
4485 pending_async_timeout_list = Qnil;
|
|
|
4486 staticpro (&pending_async_timeout_list);
|
|
|
4487
|
|
|
4488 last_point_position_buffer = Qnil;
|
|
|
4489 staticpro (&last_point_position_buffer);
|
|
|
4490
|
|
|
4491 DEFVAR_LISP ("echo-keystrokes", &Vecho_keystrokes /*
|
|
|
4492 *Nonzero means echo unfinished commands after this many seconds of pause.
|
|
|
4493 */ );
|
|
|
4494 Vecho_keystrokes = make_int (1);
|
|
|
4495
|
|
|
4496 DEFVAR_INT ("auto-save-interval", &auto_save_interval /*
|
|
|
4497 *Number of keyboard input characters between auto-saves.
|
|
|
4498 Zero means disable autosaving due to number of characters typed.
|
|
|
4499 See also the variable `auto-save-timeout'.
|
|
|
4500 */ );
|
|
|
4501 auto_save_interval = 300;
|
|
|
4502
|
|
|
4503 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook /*
|
|
|
4504 Function or functions to run before every command.
|
|
|
4505 This may examine the `this-command' variable to find out what command
|
|
|
4506 is about to be run, or may change it to cause a different command to run.
|
|
|
4507 Function on this hook must be careful to avoid signalling errors!
|
|
|
4508 */ );
|
|
|
4509 Vpre_command_hook = Qnil;
|
|
|
4510
|
|
|
4511 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook /*
|
|
|
4512 Function or functions to run after every command.
|
|
|
4513 This may examine the `this-command' variable to find out what command
|
|
|
4514 was just executed.
|
|
|
4515 */ );
|
|
|
4516 Vpost_command_hook = Qnil;
|
|
|
4517
|
|
|
4518 DEFVAR_LISP ("pre-idle-hook", &Vpre_idle_hook /*
|
|
|
4519 Normal hook run when XEmacs it about to be idle.
|
|
|
4520 This occurs whenever it is going to block, waiting for an event.
|
|
|
4521 This generally happens as a result of a call to `next-event',
|
|
|
4522 `next-command-event', `sit-for', `sleep-for', `accept-process-output',
|
|
442
|
4523 or `x-get-selection'.
|
|
428
|
4524 Errors running the hook are caught and ignored.
|
|
|
4525 */ );
|
|
|
4526 Vpre_idle_hook = Qnil;
|
|
|
4527
|
|
|
4528 DEFVAR_BOOL ("focus-follows-mouse", &focus_follows_mouse /*
|
|
|
4529 *Variable to control XEmacs behavior with respect to focus changing.
|
|
|
4530 If this variable is set to t, then XEmacs will not gratuitously change
|
|
|
4531 the keyboard focus. XEmacs cannot in general detect when this mode is
|
|
|
4532 used by the window manager, so it is up to the user to set it.
|
|
|
4533 */ );
|
|
|
4534 focus_follows_mouse = 0;
|
|
|
4535
|
|
|
4536 DEFVAR_LISP ("last-command-event", &Vlast_command_event /*
|
|
|
4537 Last keyboard or mouse button event that was part of a command. This
|
|
|
4538 variable is off limits: you may not set its value or modify the event that
|
|
|
4539 is its value, as it is destructively modified by `read-key-sequence'. If
|
|
|
4540 you want to keep a pointer to this value, you must use `copy-event'.
|
|
|
4541 */ );
|
|
|
4542 Vlast_command_event = Qnil;
|
|
|
4543
|
|
|
4544 DEFVAR_LISP ("last-command-char", &Vlast_command_char /*
|
|
|
4545 If the value of `last-command-event' is a keyboard event, then
|
|
|
4546 this is the nearest ASCII equivalent to it. This is the value that
|
|
|
4547 `self-insert-command' will put in the buffer. Remember that there is
|
|
|
4548 NOT a 1:1 mapping between keyboard events and ASCII characters: the set
|
|
|
4549 of keyboard events is much larger, so writing code that examines this
|
|
|
4550 variable to determine what key has been typed is bad practice, unless
|
|
|
4551 you are certain that it will be one of a small set of characters.
|
|
|
4552 */ );
|
|
|
4553 Vlast_command_char = Qnil;
|
|
|
4554
|
|
|
4555 DEFVAR_LISP ("last-input-event", &Vlast_input_event /*
|
|
|
4556 Last keyboard or mouse button event received. This variable is off
|
|
|
4557 limits: you may not set its value or modify the event that is its value, as
|
|
|
4558 it is destructively modified by `next-event'. If you want to keep a pointer
|
|
|
4559 to this value, you must use `copy-event'.
|
|
|
4560 */ );
|
|
|
4561 Vlast_input_event = Qnil;
|
|
|
4562
|
|
|
4563 DEFVAR_LISP ("current-mouse-event", &Vcurrent_mouse_event /*
|
|
|
4564 The mouse-button event which invoked this command, or nil.
|
|
|
4565 This is usually what `(interactive "e")' returns.
|
|
|
4566 */ );
|
|
|
4567 Vcurrent_mouse_event = Qnil;
|
|
|
4568
|
|
|
4569 DEFVAR_LISP ("last-input-char", &Vlast_input_char /*
|
|
|
4570 If the value of `last-input-event' is a keyboard event, then
|
|
|
4571 this is the nearest ASCII equivalent to it. Remember that there is
|
|
|
4572 NOT a 1:1 mapping between keyboard events and ASCII characters: the set
|
|
|
4573 of keyboard events is much larger, so writing code that examines this
|
|
|
4574 variable to determine what key has been typed is bad practice, unless
|
|
|
4575 you are certain that it will be one of a small set of characters.
|
|
|
4576 */ );
|
|
|
4577 Vlast_input_char = Qnil;
|
|
|
4578
|
|
|
4579 DEFVAR_LISP ("last-input-time", &Vlast_input_time /*
|
|
|
4580 The time (in seconds since Jan 1, 1970) of the last-command-event,
|
|
|
4581 represented as a cons of two 16-bit integers. This is destructively
|
|
|
4582 modified, so copy it if you want to keep it.
|
|
|
4583 */ );
|
|
|
4584 Vlast_input_time = Qnil;
|
|
|
4585
|
|
|
4586 DEFVAR_LISP ("last-command-event-time", &Vlast_command_event_time /*
|
|
|
4587 The time (in seconds since Jan 1, 1970) of the last-command-event,
|
|
|
4588 represented as a list of three integers. The first integer contains
|
|
|
4589 the most significant 16 bits of the number of seconds, and the second
|
|
|
4590 integer contains the least significant 16 bits. The third integer
|
|
|
4591 contains the remainder number of microseconds, if the current system
|
|
|
4592 supports microsecond clock resolution. This list is destructively
|
|
|
4593 modified, so copy it if you want to keep it.
|
|
|
4594 */ );
|
|
|
4595 Vlast_command_event_time = Qnil;
|
|
|
4596
|
|
|
4597 DEFVAR_LISP ("unread-command-events", &Vunread_command_events /*
|
|
|
4598 List of event objects to be read as next command input events.
|
|
|
4599 This can be used to simulate the receipt of events from the user.
|
|
|
4600 Normally this is nil.
|
|
|
4601 Events are removed from the front of this list.
|
|
|
4602 */ );
|
|
|
4603 Vunread_command_events = Qnil;
|
|
|
4604
|
|
|
4605 DEFVAR_LISP ("unread-command-event", &Vunread_command_event /*
|
|
|
4606 Obsolete. Use `unread-command-events' instead.
|
|
|
4607 */ );
|
|
|
4608 Vunread_command_event = Qnil;
|
|
|
4609
|
|
|
4610 DEFVAR_LISP ("last-command", &Vlast_command /*
|
|
|
4611 The last command executed. Normally a symbol with a function definition,
|
|
|
4612 but can be whatever was found in the keymap, or whatever the variable
|
|
|
4613 `this-command' was set to by that command.
|
|
|
4614 */ );
|
|
|
4615 Vlast_command = Qnil;
|
|
|
4616
|
|
|
4617 DEFVAR_LISP ("this-command", &Vthis_command /*
|
|
|
4618 The command now being executed.
|
|
|
4619 The command can set this variable; whatever is put here
|
|
|
4620 will be in `last-command' during the following command.
|
|
|
4621 */ );
|
|
|
4622 Vthis_command = Qnil;
|
|
|
4623
|
|
442
|
4624 DEFVAR_LISP ("last-command-properties", &Vlast_command_properties /*
|
|
|
4625 Value of `this-command-properties' for the last command.
|
|
|
4626 Used by commands to help synchronize consecutive commands, in preference
|
|
|
4627 to looking at `last-command' directly.
|
|
|
4628 */ );
|
|
|
4629 Vlast_command_properties = Qnil;
|
|
|
4630
|
|
|
4631 DEFVAR_LISP ("this-command-properties", &Vthis_command_properties /*
|
|
|
4632 Properties set by the current command.
|
|
|
4633 At the beginning of each command, the current value of this variable is
|
|
|
4634 copied to `last-command-properties', and then it is set to nil. Use `putf'
|
|
|
4635 to add properties to this variable. Commands should use this to communicate
|
|
|
4636 with pre/post-command hooks, subsequent commands, wrapping commands, etc.
|
|
|
4637 in preference to looking at and/or setting `this-command'.
|
|
|
4638 */ );
|
|
|
4639 Vthis_command_properties = Qnil;
|
|
|
4640
|
|
428
|
4641 DEFVAR_LISP ("help-char", &Vhelp_char /*
|
|
|
4642 Character to recognize as meaning Help.
|
|
|
4643 When it is read, do `(eval help-form)', and display result if it's a string.
|
|
|
4644 If the value of `help-form' is nil, this char can be read normally.
|
|
|
4645 This can be any form recognized as a single key specifier.
|
|
|
4646 The help-char cannot be a negative number in XEmacs.
|
|
|
4647 */ );
|
|
|
4648 Vhelp_char = make_char (8); /* C-h */
|
|
|
4649
|
|
|
4650 DEFVAR_LISP ("help-form", &Vhelp_form /*
|
|
|
4651 Form to execute when character help-char is read.
|
|
|
4652 If the form returns a string, that string is displayed.
|
|
|
4653 If `help-form' is nil, the help char is not recognized.
|
|
|
4654 */ );
|
|
|
4655 Vhelp_form = Qnil;
|
|
|
4656
|
|
|
4657 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command /*
|
|
|
4658 Command to run when `help-char' character follows a prefix key.
|
|
|
4659 This command is used only when there is no actual binding
|
|
|
4660 for that character after that prefix key.
|
|
|
4661 */ );
|
|
|
4662 Vprefix_help_command = Qnil;
|
|
|
4663
|
|
|
4664 DEFVAR_CONST_LISP ("keyboard-translate-table", &Vkeyboard_translate_table /*
|
|
|
4665 Hash table used as translate table for keyboard input.
|
|
|
4666 Use `keyboard-translate' to portably add entries to this table.
|
|
|
4667 Each key-press event is looked up in this table as follows:
|
|
|
4668
|
|
|
4669 -- If an entry maps a symbol to a symbol, then a key-press event whose
|
|
|
4670 keysym is the former symbol (with any modifiers at all) gets its
|
|
|
4671 keysym changed and its modifiers left alone. This is useful for
|
|
|
4672 dealing with non-standard X keyboards, such as the grievous damage
|
|
|
4673 that Sun has inflicted upon the world.
|
|
442
|
4674 -- If an entry maps a symbol to a character, then a key-press event
|
|
|
4675 whose keysym is the former symbol (with any modifiers at all) gets
|
|
|
4676 changed into a key-press event matching the latter character, and the
|
|
|
4677 resulting modifiers are the union of the original and new modifiers.
|
|
428
|
4678 -- If an entry maps a character to a character, then a key-press event
|
|
|
4679 matching the former character gets converted to a key-press event
|
|
|
4680 matching the latter character. This is useful on ASCII terminals
|
|
|
4681 for (e.g.) making C-\\ look like C-s, to get around flow-control
|
|
|
4682 problems.
|
|
|
4683 -- If an entry maps a character to a symbol, then a key-press event
|
|
|
4684 matching the character gets converted to a key-press event whose
|
|
|
4685 keysym is the given symbol and which has no modifiers.
|
|
442
|
4686
|
|
|
4687 Here's an example: This makes typing parens and braces easier by rerouting
|
|
|
4688 their positions to eliminate the need to use the Shift key.
|
|
|
4689
|
|
|
4690 (keyboard-translate ?[ ?()
|
|
|
4691 (keyboard-translate ?] ?))
|
|
|
4692 (keyboard-translate ?{ ?[)
|
|
|
4693 (keyboard-translate ?} ?])
|
|
|
4694 (keyboard-translate 'f11 ?{)
|
|
|
4695 (keyboard-translate 'f12 ?})
|
|
428
|
4696 */ );
|
|
|
4697
|
|
|
4698 DEFVAR_LISP ("retry-undefined-key-binding-unshifted",
|
|
|
4699 &Vretry_undefined_key_binding_unshifted /*
|
|
|
4700 If a key-sequence which ends with a shifted keystroke is undefined
|
|
|
4701 and this variable is non-nil then the command lookup is retried again
|
|
|
4702 with the last key unshifted. (e.g. C-X C-F would be retried as C-X C-f.)
|
|
|
4703 If lookup still fails, a normal error is signalled. In general,
|
|
|
4704 you should *bind* this, not set it.
|
|
|
4705 */ );
|
|
|
4706 Vretry_undefined_key_binding_unshifted = Qt;
|
|
|
4707
|
|
442
|
4708 DEFVAR_BOOL ("modifier-keys-are-sticky", &modifier_keys_are_sticky /*
|
|
|
4709 *Non-nil makes modifier keys sticky.
|
|
|
4710 This means that you can release the modifier key before pressing down
|
|
|
4711 the key that you wish to be modified. Although this is non-standard
|
|
|
4712 behavior, it is recommended because it reduces the strain on your hand,
|
|
|
4713 thus reducing the incidence of the dreaded Emacs-pinky syndrome.
|
|
444
|
4714
|
|
|
4715 Modifier keys are sticky within the inverval specified by
|
|
|
4716 `modifier-keys-sticky-time'.
|
|
442
|
4717 */ );
|
|
|
4718 modifier_keys_are_sticky = 0;
|
|
|
4719
|
|
444
|
4720 DEFVAR_LISP ("modifier-keys-sticky-time", &Vmodifier_keys_sticky_time /*
|
|
|
4721 *Modifier keys are sticky within this many milliseconds.
|
|
|
4722 If you don't want modifier keys sticking to be bounded, set this to
|
|
|
4723 non-integer value.
|
|
|
4724
|
|
|
4725 This variable has no effect when `modifier-keys-are-sticky' is nil.
|
|
|
4726 Currently only implemented under X Window System.
|
|
|
4727 */ );
|
|
|
4728 Vmodifier_keys_sticky_time = make_int (500);
|
|
|
4729
|
|
428
|
4730 #ifdef HAVE_XIM
|
|
|
4731 DEFVAR_LISP ("composed-character-default-binding",
|
|
|
4732 &Vcomposed_character_default_binding /*
|
|
|
4733 The default keybinding to use for key events from composed input.
|
|
|
4734 Window systems frequently have ways to allow the user to compose
|
|
|
4735 single characters in a language using multiple keystrokes.
|
|
|
4736 XEmacs sees these as single character keypress events.
|
|
|
4737 */ );
|
|
|
4738 Vcomposed_character_default_binding = Qself_insert_command;
|
|
|
4739 #endif /* HAVE_XIM */
|
|
|
4740
|
|
|
4741 Vcontrolling_terminal = Qnil;
|
|
|
4742 staticpro (&Vcontrolling_terminal);
|
|
|
4743
|
|
|
4744 Vdribble_file = Qnil;
|
|
|
4745 staticpro (&Vdribble_file);
|
|
|
4746
|
|
|
4747 #ifdef DEBUG_XEMACS
|
|
|
4748 DEFVAR_INT ("debug-emacs-events", &debug_emacs_events /*
|
|
|
4749 If non-zero, display debug information about Emacs events that XEmacs sees.
|
|
|
4750 Information is displayed on stderr.
|
|
|
4751
|
|
|
4752 Before the event, the source of the event is displayed in parentheses,
|
|
|
4753 and is one of the following:
|
|
|
4754
|
|
|
4755 \(real) A real event from the window system or
|
|
|
4756 terminal driver, as far as XEmacs can tell.
|
|
|
4757
|
|
|
4758 \(keyboard macro) An event generated from a keyboard macro.
|
|
|
4759
|
|
|
4760 \(unread-command-events) An event taken from `unread-command-events'.
|
|
|
4761
|
|
|
4762 \(unread-command-event) An event taken from `unread-command-event'.
|
|
|
4763
|
|
|
4764 \(command event queue) An event taken from an internal queue.
|
|
|
4765 Events end up on this queue when
|
|
|
4766 `enqueue-eval-event' is called or when
|
|
|
4767 user or eval events are received while
|
|
|
4768 XEmacs is blocking (e.g. in `sit-for',
|
|
|
4769 `sleep-for', or `accept-process-output',
|
|
|
4770 or while waiting for the reply to an
|
|
|
4771 X selection).
|
|
|
4772
|
|
|
4773 \(->keyboard-translate-table) The result of an event translated through
|
|
|
4774 keyboard-translate-table. Note that in
|
|
|
4775 this case, two events are printed even
|
|
|
4776 though only one is really generated.
|
|
|
4777
|
|
|
4778 \(SIGINT) A faked C-g resulting when XEmacs receives
|
|
|
4779 a SIGINT (e.g. C-c was pressed in XEmacs'
|
|
|
4780 controlling terminal or the signal was
|
|
|
4781 explicitly sent to the XEmacs process).
|
|
|
4782 */ );
|
|
|
4783 debug_emacs_events = 0;
|
|
|
4784 #endif
|
|
|
4785
|
|
|
4786 DEFVAR_BOOL ("inhibit-input-event-recording", &inhibit_input_event_recording /*
|
|
|
4787 Non-nil inhibits recording of input-events to recent-keys ring.
|
|
|
4788 */ );
|
|
|
4789 inhibit_input_event_recording = 0;
|
|
|
4790 }
|
|
|
4791
|
|
|
4792 void
|
|
|
4793 complex_vars_of_event_stream (void)
|
|
|
4794 {
|
|
|
4795 Vkeyboard_translate_table =
|
|
|
4796 make_lisp_hash_table (100, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ);
|
|
|
4797 }
|
|
|
4798
|
|
|
4799 void
|
|
|
4800 init_event_stream (void)
|
|
|
4801 {
|
|
|
4802 if (initialized)
|
|
|
4803 {
|
|
|
4804 #ifdef HAVE_UNIXOID_EVENT_LOOP
|
|
|
4805 init_event_unixoid ();
|
|
|
4806 #endif
|
|
|
4807 #ifdef HAVE_X_WINDOWS
|
|
|
4808 if (!strcmp (display_use, "x"))
|
|
|
4809 init_event_Xt_late ();
|
|
|
4810 else
|
|
|
4811 #endif
|
|
|
4812 #ifdef HAVE_MS_WINDOWS
|
|
|
4813 if (!strcmp (display_use, "mswindows"))
|
|
|
4814 init_event_mswindows_late ();
|
|
|
4815 else
|
|
|
4816 #endif
|
|
|
4817 {
|
|
|
4818 /* For TTY's, use the Xt event loop if we can; it allows
|
|
|
4819 us to later open an X connection. */
|
|
|
4820 #if defined (HAVE_MS_WINDOWS) && (!defined (HAVE_TTY) \
|
|
|
4821 || (defined (HAVE_MSG_SELECT) \
|
|
|
4822 && !defined (DEBUG_TTY_EVENT_STREAM)))
|
|
|
4823 init_event_mswindows_late ();
|
|
|
4824 #elif defined (HAVE_X_WINDOWS) && !defined (DEBUG_TTY_EVENT_STREAM)
|
|
|
4825 init_event_Xt_late ();
|
|
|
4826 #elif defined (HAVE_TTY)
|
|
|
4827 init_event_tty_late ();
|
|
|
4828 #endif
|
|
|
4829 }
|
|
|
4830 init_interrupts_late ();
|
|
|
4831 }
|
|
|
4832 }
|
|
|
4833
|
|
|
4834
|
|
|
4835 /*
|
|
|
4836 useful testcases for v18/v19 compatibility:
|
|
|
4837
|
|
|
4838 (defun foo ()
|
|
|
4839 (interactive)
|
|
|
4840 (setq unread-command-event (character-to-event ?A (allocate-event)))
|
|
|
4841 (setq x (list (read-char)
|
|
|
4842 ; (read-key-sequence "") ; try it with and without this
|
|
|
4843 last-command-char last-input-char
|
|
|
4844 (recent-keys) (this-command-keys))))
|
|
|
4845 (global-set-key "\^Q" 'foo)
|
|
|
4846
|
|
|
4847 without the read-key-sequence:
|
|
444
|
4848 ^Q ==> (?A ?\^Q ?A [... ^Q] [^Q])
|
|
|
4849 ^U^U^Q ==> (?A ?\^Q ?A [... ^U ^U ^Q] [^U ^U ^Q])
|
|
|
4850 ^U^U^U^G^Q ==> (?A ?\^Q ?A [... ^U ^U ^U ^G ^Q] [^Q])
|
|
428
|
4851
|
|
|
4852 with the read-key-sequence:
|
|
444
|
4853 ^Qb ==> (?A [b] ?\^Q ?b [... ^Q b] [b])
|
|
|
4854 ^U^U^Qb ==> (?A [b] ?\^Q ?b [... ^U ^U ^Q b] [b])
|
|
|
4855 ^U^U^U^G^Qb ==> (?A [b] ?\^Q ?b [... ^U ^U ^U ^G ^Q b] [b])
|
|
428
|
4856
|
|
|
4857 ;the evi-mode command "4dlj.j.j.j.j.j." is also a good testcase (gag)
|
|
|
4858
|
|
|
4859 ;(setq x (list (read-char) quit-flag))^J^G
|
|
|
4860 ;(let ((inhibit-quit t)) (setq x (list (read-char) quit-flag)))^J^G
|
|
|
4861 ;for BOTH, x should get set to (7 t), but no result should be printed.
|
|
444
|
4862 ;; #### According to the doc of quit-flag, second test should return
|
|
|
4863 ;; (?\^G nil). Accidentaly XEmacs returns correct value. However,
|
|
|
4864 ;; XEmacs 21.1.12 and 21.2.36 both fails on first test.
|
|
428
|
4865
|
|
|
4866 ;also do this: make two frames, one viewing "*scratch*", the other "foo".
|
|
|
4867 ;in *scratch*, type (sit-for 20)^J
|
|
|
4868 ;wait a couple of seconds, move cursor to foo, type "a"
|
|
|
4869 ;a should be inserted in foo. Cursor highlighting should not change in
|
|
|
4870 ;the meantime.
|
|
|
4871
|
|
|
4872 ;do it with sleep-for. move cursor into foo, then back into *scratch*
|
|
|
4873 ;before typing.
|
|
|
4874 ;repeat also with (accept-process-output nil 20)
|
|
|
4875
|
|
|
4876 ;make sure ^G aborts sit-for, sleep-for and accept-process-output:
|
|
|
4877
|
|
|
4878 (defun tst ()
|
|
|
4879 (list (condition-case c
|
|
|
4880 (sleep-for 20)
|
|
|
4881 (quit c))
|
|
|
4882 (read-char)))
|
|
|
4883
|
|
444
|
4884 (tst)^Ja^G ==> ((quit) ?a) with no signal
|
|
|
4885 (tst)^J^Ga ==> ((quit) ?a) with no signal
|
|
|
4886 (tst)^Jabc^G ==> ((quit) ?a) with no signal, and "bc" inserted in buffer
|
|
428
|
4887
|
|
|
4888 ; with sit-for only do the 2nd test.
|
|
|
4889 ; Do all 3 tests with (accept-process-output nil 20)
|
|
|
4890
|
|
|
4891 Do this:
|
|
|
4892 (setq enable-recursive-minibuffers t
|
|
|
4893 minibuffer-max-depth nil)
|
|
|
4894 ESC ESC ESC ESC - there are now two minibuffers active
|
|
|
4895 C-g C-g C-g - there should be active 0, not 1
|
|
|
4896 Similarly:
|
|
|
4897 C-x C-f ~ / ? - wait for "Making completion list..." to display
|
|
|
4898 C-g - wait for "Quit" to display
|
|
|
4899 C-g - minibuffer should not be active
|
|
|
4900 however C-g before "Quit" is displayed should leave minibuffer active.
|
|
|
4901
|
|
|
4902 ;do it all in both v18 and v19 and make sure all results are the same.
|
|
|
4903 ;all of these cases matter a lot, but some in quite subtle ways.
|
|
|
4904 */
|
|
|
4905
|
|
|
4906 /*
|
|
|
4907 Additional test cases for accept-process-output, sleep-for, sit-for.
|
|
|
4908 Be sure you do all of the above checking for C-g and focus, too!
|
|
|
4909
|
|
|
4910 ; Make sure that timer handlers are run during, not after sit-for:
|
|
|
4911 (defun timer-check ()
|
|
|
4912 (add-timeout 2 '(lambda (ignore) (message "timer ran")) nil)
|
|
|
4913 (sit-for 5)
|
|
|
4914 (message "after sit-for"))
|
|
|
4915
|
|
|
4916 ; The first message should appear after 2 seconds, and the final message
|
|
|
4917 ; 3 seconds after that.
|
|
|
4918 ; repeat above test with (sleep-for 5) and (accept-process-output nil 5)
|
|
|
4919
|
|
|
4920
|
|
|
4921
|
|
|
4922 ; Make sure that process filters are run during, not after sit-for.
|
|
|
4923 (defun fubar ()
|
|
|
4924 (message "sit-for = %s" (sit-for 30)))
|
|
|
4925 (add-hook 'post-command-hook 'fubar)
|
|
|
4926
|
|
|
4927 ; Now type M-x shell RET
|
|
|
4928 ; wait for the shell prompt then send: ls RET
|
|
|
4929 ; the output of ls should fill immediately, and not wait 30 seconds.
|
|
|
4930
|
|
|
4931 ; repeat above test with (sleep-for 30) and (accept-process-output nil 30)
|
|
|
4932
|
|
|
4933
|
|
|
4934
|
|
|
4935 ; Make sure that recursive invocations return immediately:
|
|
|
4936 (defmacro test-diff-time (start end)
|
|
|
4937 `(+ (* (- (car ,end) (car ,start)) 65536.0)
|
|
|
4938 (- (cadr ,end) (cadr ,start))
|
|
|
4939 (/ (- (caddr ,end) (caddr ,start)) 1000000.0)))
|
|
|
4940
|
|
|
4941 (defun testee (ignore)
|
|
|
4942 (sit-for 10))
|
|
|
4943
|
|
|
4944 (defun test-them ()
|
|
|
4945 (let ((start (current-time))
|
|
|
4946 end)
|
|
|
4947 (add-timeout 2 'testee nil)
|
|
|
4948 (sit-for 5)
|
|
|
4949 (add-timeout 2 'testee nil)
|
|
|
4950 (sleep-for 5)
|
|
|
4951 (add-timeout 2 'testee nil)
|
|
|
4952 (accept-process-output nil 5)
|
|
|
4953 (setq end (current-time))
|
|
|
4954 (test-diff-time start end)))
|
|
|
4955
|
|
|
4956 (test-them) should sit for 15 seconds.
|
|
|
4957 Repeat with testee set to sleep-for and accept-process-output.
|
|
|
4958 These should each delay 36 seconds.
|
|
|
4959
|
|
|
4960 */
|
