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428
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1 /* Implements an elisp-programmable menubar -- Win32
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2 Copyright (C) 1993, 1994 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
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4 Copyright (C) 1997 Kirill M. Katsnelson <kkm@kis.ru>
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Not in FSF. */
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24
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25 /* Author:
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26 Initially written by kkm 12/24/97,
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27 peeking into and copying stuff from menubar-x.c
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28 */
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29
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30 /* Algorithm for handling menus is as follows. When window's menubar
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31 * is created, current-menubar is not traversed in depth. Rather, only
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32 * top level items, both items and pulldowns, are added to the
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33 * menubar. Each pulldown is initially empty. When a pulldown is
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34 * selected and about to open, corresponding element of
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35 * current-menubar is found, and the newly open pulldown is
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36 * populated. This is made again in the same non-recursive manner.
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37 *
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38 * This algorithm uses hash tables to find out element of the menu
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39 * descriptor list given menu handle. The key is an opaque ptr data
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40 * type, keeping menu handle, and the value is a list of strings
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41 * representing the path from the root of the menu to the item
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42 * descriptor. Each frame has an associated hash table.
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43 *
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44 * Leaf items are assigned a unique id based on item's hash. When an
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45 * item is selected, Windows sends back the id. Unfortunately, only
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46 * low 16 bit of the ID are sent, and there's no way to get the 32-bit
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47 * value. Yes, Win32 is just a different set of bugs than X! Aside
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48 * from this blame, another hashing mechanism is required to map menu
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49 * ids to commands (which are actually Lisp_Object's). This mapping is
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50 * performed in the same hash table, as the lifetime of both maps is
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51 * exactly the same. This is unambigous, as menu handles are
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52 * represented by lisp opaques, while command ids are by lisp
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53 * integers. The additional advantage for this is that command forms
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54 * are automatically GC-protected, which is important because these
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55 * may be transient forms generated by :filter functions.
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56 *
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57 * The hash table is not allowed to grow too much; it is pruned
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58 * whenever this is safe to do. This is done by re-creating the menu
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59 * bar, and clearing and refilling the hash table from scratch.
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60 *
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61 * Popup menus are handled identically to pulldowns. A static hash
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62 * table is used for popup menus, and lookup is made not in
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63 * current-menubar but in a lisp form supplied to the `popup'
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64 * function.
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65 *
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66 * Another Windows weirdness is that there's no way to tell that a
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67 * popup has been dismissed without making selection. We need to know
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68 * that to cleanup the popup menu hash table, but this is not honestly
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69 * doable using *documented* sequence of messages. Sticking to
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70 * particular knowledge is bad because this may break in Windows NT
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71 * 5.0, or Windows 98, or other future version. Instead, I allow the
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72 * hash tables to hang around, and not clear them, unless WM_COMMAND is
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73 * received. This is worthy some memory but more safe. Hacks welcome,
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74 * anyways!
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75 *
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76 */
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77
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78 #include <config.h>
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79 #include "lisp.h"
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80 #include <limits.h>
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81
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82 #include "buffer.h"
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83 #include "commands.h"
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84 #include "console-msw.h"
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85 #include "elhash.h"
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86 #include "events.h"
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87 #include "frame.h"
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88 #include "gui.h"
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89 #include "lisp.h"
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90 #include "menubar.h"
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91 #include "menubar-msw.h"
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92 #include "opaque.h"
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93 #include "window.h"
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94
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95 /* #### */
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96 #define REPLACE_ME_WITH_GLOBAL_VARIABLE_WHICH_CONTROLS_RIHGT_FLUSH 0
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97
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98 #define EMPTY_ITEM_ID ((UINT)LISP_TO_VOID (Qunbound))
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99 #define EMPTY_ITEM_NAME "(empty)"
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100
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101 /* Current menu (bar or popup) descriptor. gcpro'ed */
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102 static Lisp_Object current_menudesc;
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103
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104 /* Current menubar or popup hash table. gcpro'ed */
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105 static Lisp_Object current_hash_table;
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106
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107 /* This is used to allocate unique ids to menu items.
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108 Items ids are in MENU_ITEM_ID_MIN to MENU_ITEM_ID_MAX.
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109 Allocation checks that the item is not already in
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110 the TOP_LEVEL_MENU */
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111
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112 /* #### defines go to gui-msw.h, as the range is shared with toolbars
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113 (If only toolbars will be implemented as common controls) */
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114 #define MENU_ITEM_ID_MIN 0x8000
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115 #define MENU_ITEM_ID_MAX 0xFFFF
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116 #define MENU_ITEM_ID_BITS(x) (((x) & 0x7FFF) | 0x8000)
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117 static HMENU top_level_menu;
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118
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119 /*
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120 * This returns Windows-style menu item string:
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121 * "Left Flush\tRight Flush"
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122 */
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123 static char*
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124 displayable_menu_item (Lisp_Object gui_item, int bar_p)
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125 {
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126 /* We construct the name in a static buffer. That's fine, because
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127 menu items longer than 128 chars are probably programming errors,
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128 and better be caught than displayed! */
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129
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130 static char buf[MAX_MENUITEM_LENGTH+2];
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131 char *ptr;
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132 unsigned int ll, lr;
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133
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134 /* Left flush part of the string */
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135 ll = gui_item_display_flush_left (gui_item, buf, MAX_MENUITEM_LENGTH);
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136
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137 /* Escape '&' as '&&' */
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138 ptr = buf;
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139 while ((ptr=memchr (ptr, '&', ll-(ptr-buf))) != NULL)
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140 {
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141 if (ll+2 >= MAX_MENUITEM_LENGTH)
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142 signal_simple_error ("Menu item produces too long displayable string",
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143 XGUI_ITEM (gui_item)->name);
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144 memmove (ptr+1, ptr, (ll-(ptr-buf))+1);
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145 ll++;
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146 ptr+=2;
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147 }
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148
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149 /* Replace XEmacs accelerator '%_' with Windows accelerator '&' */
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150 ptr = buf;
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151 while ((ptr=memchr (ptr, '%', ll-(ptr-buf))) != NULL)
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152 {
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153 if (*(ptr+1) == '_')
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154 {
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155 *ptr = '&';
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156 memmove (ptr+1, ptr+2, ll-(ptr-buf+2));
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157 ll--;
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158 }
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159 ptr++;
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160 }
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161
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162 /* Right flush part, unless we're at the top-level where it's not allowed */
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163 if (!bar_p)
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164 {
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165 assert (MAX_MENUITEM_LENGTH > ll + 1);
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166 lr = gui_item_display_flush_right (gui_item, buf + ll + 1,
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167 MAX_MENUITEM_LENGTH - ll - 1);
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168 if (lr)
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169 buf [ll] = '\t';
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170 }
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171
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172 return buf;
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173 }
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174
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175 /*
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176 * hmenu_to_lisp_object() returns an opaque ptr given menu handle.
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177 */
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178 static Lisp_Object
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179 hmenu_to_lisp_object (HMENU hmenu)
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180 {
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181 return make_opaque_ptr (hmenu);
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182 }
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183
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184 /*
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185 * Allocation tries a hash based on item's path and name first. This
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186 * almost guarantees that the same item will override its old value in
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187 * the hash table rather than abandon it.
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188 */
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189 static Lisp_Object
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190 allocate_menu_item_id (Lisp_Object path, Lisp_Object name, Lisp_Object suffix)
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191 {
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192 UINT id = MENU_ITEM_ID_BITS (HASH3 (internal_hash (path, 0),
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193 internal_hash (name, 0),
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194 internal_hash (suffix, 0)));
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195 do {
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196 id = MENU_ITEM_ID_BITS (id + 1);
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197 } while (GetMenuState (top_level_menu, id, MF_BYCOMMAND) != 0xFFFFFFFF);
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198 return make_int (id);
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199 }
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200
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201 static HMENU
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202 create_empty_popup_menu (void)
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203 {
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204 return CreatePopupMenu ();
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205 }
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206
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207 static void
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208 empty_menu (HMENU menu, int add_empty_p)
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209 {
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210 while (DeleteMenu (menu, 0, MF_BYPOSITION));
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211 if (add_empty_p)
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212 AppendMenu (menu, MF_STRING | MF_GRAYED, EMPTY_ITEM_ID, EMPTY_ITEM_NAME);
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213 }
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214
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215 /*
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216 * The idea of checksumming is that we must hash minimal object
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217 * which is necessarily changes when the item changes. For separator
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218 * this is a constant, for grey strings and submenus these are hashes
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219 * of names, since submenus are unpopulated until opened so always
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220 * equal otherwise. For items, this is a full hash value of a callback,
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221 * because a callback may me a form which can be changed only somewhere
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222 * in depth.
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223 */
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224 static unsigned long
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225 checksum_menu_item (Lisp_Object item)
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226 {
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227 if (STRINGP (item))
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228 {
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229 /* Separator or unselectable text - hash as a string + 13 */
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230 if (separator_string_p (XSTRING_DATA (item)))
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231 return 13;
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232 else
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233 return internal_hash (item, 0) + 13;
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234 }
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235 else if (CONSP (item))
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236 {
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237 /* Submenu - hash by its string name + 0 */
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238 return internal_hash (XCAR(item), 0);
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239 }
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240 else if (VECTORP (item))
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241 {
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242 /* An ordinary item - hash its name and callback form. */
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243 return HASH2 (internal_hash (XVECTOR_DATA(item)[0], 0),
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244 internal_hash (XVECTOR_DATA(item)[1], 0));
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245 }
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246
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247 /* An error - will be caught later */
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248 return 0;
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249 }
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250
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251 static void
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252 populate_menu_add_item (HMENU menu, Lisp_Object path,
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253 Lisp_Object hash_tab, Lisp_Object item,
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254 int flush_right, int bar_p)
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255 {
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256 MENUITEMINFO item_info;
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257
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258 item_info.cbSize = sizeof (item_info);
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259 item_info.fMask = MIIM_TYPE | MIIM_STATE | MIIM_ID;
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260 item_info.fState = 0;
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261 item_info.wID = 0;
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262 item_info.fType = 0;
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263
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264 if (STRINGP (item))
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265 {
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266 /* Separator or unselectable text */
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267 if (separator_string_p (XSTRING_DATA (item)))
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268 item_info.fType = MFT_SEPARATOR;
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269 else
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270 {
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271 item_info.fType = MFT_STRING;
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272 item_info.fState = MFS_DISABLED;
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273 item_info.dwTypeData = XSTRING_DATA (item);
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274 }
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275 }
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276 else if (CONSP (item))
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277 {
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278 /* Submenu */
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279 HMENU submenu;
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280 Lisp_Object gui_item = allocate_gui_item ();
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281 struct Lisp_Gui_Item* pgui_item = XGUI_ITEM (gui_item);
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282 struct gcpro gcpro1;
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283
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284 GCPRO1 (gui_item);
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285
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286 menu_parse_submenu_keywords (item, gui_item);
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287
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288 if (!STRINGP (pgui_item->name))
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289 signal_simple_error ("Menu name (first element) must be a string", item);
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290
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291 if (!gui_item_included_p (gui_item, Vmenubar_configuration))
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292 return;
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293
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294 if (!gui_item_active_p (gui_item))
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295 item_info.fState = MFS_GRAYED;
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296 /* Temptation is to put 'else' right here. Although, the
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297 displayed item won't have an arrow indicating that it is a
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298 popup. So we go ahead a little bit more and create a popup */
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299 submenu = create_empty_popup_menu();
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300
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301 item_info.fMask |= MIIM_SUBMENU;
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302 item_info.dwTypeData = displayable_menu_item (gui_item, bar_p);
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303 item_info.hSubMenu = submenu;
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304
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305 if (!(item_info.fState & MFS_GRAYED))
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306 {
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307 /* Now add the full submenu path as a value to the hash table,
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308 keyed by menu handle */
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309 if (NILP(path))
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310 /* list1 cannot GC */
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311 path = list1 (pgui_item->name);
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312 else
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313 {
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314 Lisp_Object arg[2];
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315 arg[0] = path;
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316 arg[1] = list1 (pgui_item->name);
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317 /* Fappend gcpro'es its arg */
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318 path = Fappend (2, arg);
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319 }
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320
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321 /* Fputhash GCPRO'es PATH */
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322 Fputhash (hmenu_to_lisp_object (submenu), path, hash_tab);
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323 }
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324 UNGCPRO; /* gui_item */
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325 }
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326 else if (VECTORP (item))
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327 {
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328 /* An ordinary item */
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329 Lisp_Object style, id;
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330 Lisp_Object gui_item = gui_parse_item_keywords (item);
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331 struct Lisp_Gui_Item* pgui_item = XGUI_ITEM (gui_item);
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332 struct gcpro gcpro1;
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333
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334 GCPRO1 (gui_item);
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335
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336 if (!gui_item_included_p (gui_item, Vmenubar_configuration))
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337 return;
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338
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339 if (!gui_item_active_p (gui_item))
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340 item_info.fState = MFS_GRAYED;
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341
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342 style = (NILP (pgui_item->selected) || NILP (Feval (pgui_item->selected))
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343 ? Qnil : pgui_item->style);
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344
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345 if (EQ (style, Qradio))
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346 {
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347 item_info.fType |= MFT_RADIOCHECK;
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348 item_info.fState |= MFS_CHECKED;
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349 }
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350 else if (EQ (style, Qtoggle))
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351 {
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352 item_info.fState |= MFS_CHECKED;
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353 }
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354
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355 id = allocate_menu_item_id (path, pgui_item->name,
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356 pgui_item->suffix);
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357 Fputhash (id, pgui_item->callback, hash_tab);
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358
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359 item_info.wID = (UINT) XINT(id);
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360 item_info.fType |= MFT_STRING;
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361 item_info.dwTypeData = displayable_menu_item (gui_item, bar_p);
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362
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363 UNGCPRO; /* gui_item */
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364 }
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365 else
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366 {
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367 signal_simple_error ("Malformed menu item descriptor", item);
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368 }
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369
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370 if (flush_right)
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371 item_info.fType |= MFT_RIGHTJUSTIFY;
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372
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373 InsertMenuItem (menu, UINT_MAX, TRUE, &item_info);
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374 }
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375
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376 /*
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377 * This function is called from populate_menu and checksum_menu.
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378 * When called to populate, MENU is a menu handle, PATH is a
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379 * list of strings representing menu path from root to this submenu,
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380 * DESCRIPTOR is a menu descriptor, HASH_TAB is a hash table associated
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381 * with root menu, BAR_P indicates whether this called for a menubar or
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382 * a popup, and POPULATE_P is non-zero. Return value must be ignored.
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383 * When called to checksum, DESCRIPTOR has the same meaning, POPULATE_P
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384 * is zero, PATH must be Qnil, and the rest of parameters is ignored.
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385 * Return value is the menu checksum.
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386 */
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387 static unsigned long
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388 populate_or_checksum_helper (HMENU menu, Lisp_Object path, Lisp_Object desc,
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389 Lisp_Object hash_tab, int bar_p, int populate_p)
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|
390 {
|
|
|
391 Lisp_Object item_desc;
|
|
|
392 int deep_p, flush_right;
|
|
|
393 struct gcpro gcpro1;
|
|
|
394 unsigned long checksum;
|
|
|
395 Lisp_Object gui_item = allocate_gui_item ();
|
|
|
396 struct Lisp_Gui_Item* pgui_item = XGUI_ITEM (gui_item);
|
|
|
397 GCPRO1 (gui_item);
|
|
|
398
|
|
|
399 /* We are sometimes called with the menubar unchanged, and with changed
|
|
|
400 right flush. We have to update the menubar in this case,
|
|
|
401 so account for the compliance setting in the hash value */
|
|
|
402 checksum = REPLACE_ME_WITH_GLOBAL_VARIABLE_WHICH_CONTROLS_RIHGT_FLUSH;
|
|
|
403
|
|
|
404 /* Will initially contain only "(empty)" */
|
|
|
405 if (populate_p)
|
|
|
406 empty_menu (menu, 1);
|
|
|
407
|
|
|
408 /* PATH set to nil indicates top-level popup or menubar */
|
|
|
409 deep_p = !NILP (path);
|
|
|
410
|
|
|
411 /* Fetch keywords prepending the item list */
|
|
|
412 desc = menu_parse_submenu_keywords (desc, gui_item);
|
|
|
413
|
|
|
414 /* Check that menu name is specified when expected */
|
|
|
415 if (NILP (pgui_item->name) && deep_p)
|
|
|
416 signal_simple_error ("Menu must have a name", desc);
|
|
|
417
|
|
|
418 /* Apply filter if specified */
|
|
|
419 if (!NILP (pgui_item->filter))
|
|
|
420 desc = call1 (pgui_item->filter, desc);
|
|
|
421
|
|
|
422 /* Loop thru the desc's CDR and add items for each entry */
|
|
|
423 flush_right = 0;
|
|
|
424 EXTERNAL_LIST_LOOP (item_desc, desc)
|
|
|
425 {
|
|
|
426 if (NILP (XCAR (item_desc)))
|
|
|
427 {
|
|
|
428 /* Do not flush right menubar items when MS style compliant */
|
|
|
429 if (bar_p && !REPLACE_ME_WITH_GLOBAL_VARIABLE_WHICH_CONTROLS_RIHGT_FLUSH)
|
|
|
430 flush_right = 1;
|
|
|
431 if (!populate_p)
|
|
|
432 checksum = HASH2 (checksum, LISP_HASH (Qnil));
|
|
|
433 }
|
|
|
434 else if (populate_p)
|
|
|
435 populate_menu_add_item (menu, path, hash_tab,
|
|
|
436 XCAR (item_desc), flush_right, bar_p);
|
|
|
437 else
|
|
|
438 checksum = HASH2 (checksum,
|
|
|
439 checksum_menu_item (XCAR (item_desc)));
|
|
|
440 }
|
|
|
441
|
|
|
442 if (populate_p)
|
|
|
443 {
|
|
|
444 /* Remove the "(empty)" item, if there are other ones */
|
|
|
445 if (GetMenuItemCount (menu) > 1)
|
|
|
446 RemoveMenu (menu, EMPTY_ITEM_ID, MF_BYCOMMAND);
|
|
|
447
|
|
|
448 /* Add the header to the popup, if told so. The same as in X - an
|
|
|
449 insensitive item, and a separator (Seems to me, there were
|
|
|
450 two separators in X... In Windows this looks ugly, anyways. */
|
|
|
451 if (!bar_p && !deep_p && popup_menu_titles && !NILP(pgui_item->name))
|
|
|
452 {
|
|
|
453 CHECK_STRING (pgui_item->name);
|
|
|
454 InsertMenu (menu, 0, MF_BYPOSITION | MF_STRING | MF_DISABLED,
|
|
|
455 0, XSTRING_DATA(pgui_item->name));
|
|
|
456 InsertMenu (menu, 1, MF_BYPOSITION | MF_SEPARATOR, 0, NULL);
|
|
|
457 SetMenuDefaultItem (menu, 0, MF_BYPOSITION);
|
|
|
458 }
|
|
|
459 }
|
|
|
460 UNGCPRO; /* gui_item */
|
|
|
461 return checksum;
|
|
|
462 }
|
|
|
463
|
|
|
464 static void
|
|
|
465 populate_menu (HMENU menu, Lisp_Object path, Lisp_Object desc,
|
|
|
466 Lisp_Object hash_tab, int bar_p)
|
|
|
467 {
|
|
|
468 populate_or_checksum_helper (menu, path, desc, hash_tab, bar_p, 1);
|
|
|
469 }
|
|
|
470
|
|
|
471 static unsigned long
|
|
|
472 checksum_menu (Lisp_Object desc)
|
|
|
473 {
|
|
|
474 return populate_or_checksum_helper (NULL, Qnil, desc, Qunbound, 0, 0);
|
|
|
475 }
|
|
|
476
|
|
|
477 static void
|
|
|
478 update_frame_menubar_maybe (struct frame* f)
|
|
|
479 {
|
|
|
480 HMENU menubar = GetMenu (FRAME_MSWINDOWS_HANDLE (f));
|
|
|
481 struct window *w = XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f));
|
|
|
482 Lisp_Object desc = (!NILP (w->menubar_visible_p)
|
|
|
483 ? symbol_value_in_buffer (Qcurrent_menubar, w->buffer)
|
|
|
484 : Qnil);
|
|
|
485
|
|
|
486 top_level_menu = menubar;
|
|
|
487
|
|
|
488 if (NILP (desc) && menubar != NULL)
|
|
|
489 {
|
|
|
490 /* Menubar has gone */
|
|
|
491 FRAME_MSWINDOWS_MENU_HASH_TABLE(f) = Qnil;
|
|
|
492 SetMenu (FRAME_MSWINDOWS_HANDLE (f), NULL);
|
|
|
493 DestroyMenu (menubar);
|
|
|
494 DrawMenuBar (FRAME_MSWINDOWS_HANDLE (f));
|
|
|
495 return;
|
|
|
496 }
|
|
|
497
|
|
|
498 if (!NILP (desc) && menubar == NULL)
|
|
|
499 {
|
|
|
500 /* Menubar has appeared */
|
|
|
501 menubar = CreateMenu ();
|
|
|
502 goto populate;
|
|
|
503 }
|
|
|
504
|
|
|
505 if (NILP (desc))
|
|
|
506 {
|
|
|
507 /* We did not have the bar and are not going to */
|
|
|
508 return;
|
|
|
509 }
|
|
|
510
|
|
|
511 /* Now we bail out if the menubar has not changed */
|
|
|
512 if (FRAME_MSWINDOWS_MENU_CHECKSUM(f) == checksum_menu (desc))
|
|
|
513 return;
|
|
|
514
|
|
|
515 populate:
|
|
|
516 /* Come with empty hash table */
|
|
|
517 if (NILP (FRAME_MSWINDOWS_MENU_HASH_TABLE(f)))
|
|
|
518 FRAME_MSWINDOWS_MENU_HASH_TABLE(f) =
|
|
|
519 make_lisp_hash_table (50, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
|
|
|
520 else
|
|
|
521 Fclrhash (FRAME_MSWINDOWS_MENU_HASH_TABLE(f));
|
|
|
522
|
|
|
523 Fputhash (hmenu_to_lisp_object (menubar), Qnil,
|
|
|
524 FRAME_MSWINDOWS_MENU_HASH_TABLE(f));
|
|
|
525 populate_menu (menubar, Qnil, desc,
|
|
|
526 FRAME_MSWINDOWS_MENU_HASH_TABLE(f), 1);
|
|
|
527 SetMenu (FRAME_MSWINDOWS_HANDLE (f), menubar);
|
|
|
528 DrawMenuBar (FRAME_MSWINDOWS_HANDLE (f));
|
|
|
529
|
|
|
530 FRAME_MSWINDOWS_MENU_CHECKSUM(f) = checksum_menu (desc);
|
|
|
531 }
|
|
|
532
|
|
|
533 static void
|
|
|
534 prune_menubar (struct frame *f)
|
|
|
535 {
|
|
|
536 HMENU menubar = GetMenu (FRAME_MSWINDOWS_HANDLE (f));
|
|
|
537 Lisp_Object desc = current_frame_menubar (f);
|
|
|
538 if (menubar == NULL)
|
|
|
539 return;
|
|
|
540
|
|
|
541 /* #### If a filter function has set desc to Qnil, this abort()
|
|
|
542 triggers. To resolve, we must prevent filters explicitly from
|
|
|
543 mangling with the active menu. In apply_filter probably?
|
|
|
544 Is copy-tree on the whole menu too expensive? */
|
|
|
545 if (NILP(desc))
|
|
|
546 /* abort(); */
|
|
|
547 return;
|
|
|
548
|
|
|
549 /* We do the trick by removing all items and re-populating top level */
|
|
|
550 empty_menu (menubar, 0);
|
|
|
551
|
|
|
552 assert (HASH_TABLEP (FRAME_MSWINDOWS_MENU_HASH_TABLE(f)));
|
|
|
553 Fclrhash (FRAME_MSWINDOWS_MENU_HASH_TABLE(f));
|
|
|
554
|
|
|
555 Fputhash (hmenu_to_lisp_object (menubar), Qnil,
|
|
|
556 FRAME_MSWINDOWS_MENU_HASH_TABLE(f));
|
|
|
557 populate_menu (menubar, Qnil, desc,
|
|
|
558 FRAME_MSWINDOWS_MENU_HASH_TABLE(f), 1);
|
|
|
559 }
|
|
|
560
|
|
|
561 /*
|
|
|
562 * This is called when cleanup is possible. It is better not to
|
|
|
563 * clean things up at all than do it too early!
|
|
|
564 */
|
|
|
565 static void
|
|
|
566 menu_cleanup (struct frame *f)
|
|
|
567 {
|
|
|
568 /* This function can GC */
|
|
|
569 current_menudesc = Qnil;
|
|
|
570 current_hash_table = Qnil;
|
|
|
571 prune_menubar (f);
|
|
|
572 }
|
|
|
573
|
|
|
574
|
|
|
575 /*------------------------------------------------------------------------*/
|
|
|
576 /* Message handlers */
|
|
|
577 /*------------------------------------------------------------------------*/
|
|
|
578 static Lisp_Object
|
|
|
579 unsafe_handle_wm_initmenupopup_1 (HMENU menu, struct frame* f)
|
|
|
580 {
|
|
|
581 /* This function can call lisp, beat dogs and stick chewing gum to
|
|
|
582 everything! */
|
|
|
583
|
|
|
584 Lisp_Object path, desc;
|
|
|
585 struct gcpro gcpro1;
|
|
|
586
|
|
|
587 /* Find which guy is going to explode */
|
|
|
588 path = Fgethash (hmenu_to_lisp_object (menu), current_hash_table, Qunbound);
|
|
|
589 assert (!UNBOUNDP (path));
|
|
|
590 #ifdef DEBUG_XEMACS
|
|
|
591 /* Allow to continue in a debugger after assert - not so fatal */
|
|
|
592 if (UNBOUNDP (path))
|
|
|
593 error ("internal menu error");
|
|
|
594 #endif
|
|
|
595
|
|
|
596 /* Now find a desc chunk for it. If none, then probably menu open
|
|
|
597 hook has played too much games around stuff */
|
|
|
598 desc = Fmenu_find_real_submenu (current_menudesc, path);
|
|
|
599 if (NILP (desc))
|
|
|
600 signal_simple_error ("This menu does not exist any more", path);
|
|
|
601
|
|
|
602 /* Now, stuff it */
|
|
|
603 /* DESC may be generated by filter, so we have to gcpro it */
|
|
|
604 GCPRO1 (desc);
|
|
|
605 populate_menu (menu, path, desc, current_hash_table, 0);
|
|
|
606 UNGCPRO;
|
|
|
607 return Qt;
|
|
|
608 }
|
|
|
609
|
|
|
610 static Lisp_Object
|
|
|
611 unsafe_handle_wm_initmenu_1 (struct frame* f)
|
|
|
612 {
|
|
|
613 /* This function can call lisp */
|
|
|
614
|
|
|
615 /* NOTE: This is called for the bar only, WM_INITMENU
|
|
|
616 for popups is filtered out */
|
|
|
617
|
|
|
618 /* #### - this menubar update mechanism is expensively anti-social and
|
|
|
619 the activate-menubar-hook is now mostly obsolete. */
|
|
|
620
|
|
|
621 /* We simply ignore return value. In any case, we construct the bar
|
|
|
622 on the fly */
|
|
|
623 run_hook (Qactivate_menubar_hook);
|
|
|
624
|
|
|
625 update_frame_menubar_maybe (f);
|
|
|
626
|
|
|
627 current_menudesc = current_frame_menubar (f);
|
|
|
628 current_hash_table = FRAME_MSWINDOWS_MENU_HASH_TABLE(f);
|
|
|
629 assert (HASH_TABLEP (current_hash_table));
|
|
|
630
|
|
|
631 return Qt;
|
|
|
632 }
|
|
|
633
|
|
|
634 /*
|
|
|
635 * Return value is Qt if we have dispatched the command,
|
|
|
636 * or Qnil if id has not been mapped to a callback.
|
|
|
637 * Window procedure may try other targets to route the
|
|
|
638 * command if we return nil
|
|
|
639 */
|
|
|
640 Lisp_Object
|
|
|
641 mswindows_handle_wm_command (struct frame* f, WORD id)
|
|
|
642 {
|
|
|
643 /* Try to map the command id through the proper hash table */
|
|
|
644 Lisp_Object data, fn, arg, frame;
|
|
|
645 struct gcpro gcpro1;
|
|
|
646
|
|
|
647 if (NILP (current_hash_table))
|
|
|
648 return Qnil;
|
|
|
649
|
|
|
650 data = Fgethash (make_int (id), current_hash_table, Qunbound);
|
|
|
651
|
|
|
652 if (UNBOUNDP (data))
|
|
|
653 {
|
|
|
654 menu_cleanup (f);
|
|
|
655 return Qnil;
|
|
|
656 }
|
|
|
657
|
|
|
658 /* Need to gcpro because the hash table may get destroyed by
|
|
|
659 menu_cleanup(), and will not gcpro the data any more */
|
|
|
660 GCPRO1 (data);
|
|
|
661 menu_cleanup (f);
|
|
|
662
|
|
|
663 /* Ok, this is our one. Enqueue it. */
|
|
|
664 get_gui_callback (data, &fn, &arg);
|
|
|
665 XSETFRAME (frame, f);
|
|
|
666 /* this used to call mswindows_enqueue_misc_user_event but that
|
|
|
667 breaks customize because the misc_event gets eval'ed in some
|
|
|
668 cicumstances. Don't change it back unless you can fix the
|
|
|
669 customize problem also.*/
|
|
|
670 enqueue_misc_user_event (frame, fn, arg);
|
|
|
671 mswindows_enqueue_magic_event (NULL, XM_BUMPQUEUE);
|
|
|
672
|
|
|
673 UNGCPRO; /* data */
|
|
|
674 return Qt;
|
|
|
675 }
|
|
|
676
|
|
|
677
|
|
|
678 /*------------------------------------------------------------------------*/
|
|
|
679 /* Message handling proxies */
|
|
|
680 /*------------------------------------------------------------------------*/
|
|
|
681
|
|
|
682 static HMENU wm_initmenu_menu;
|
|
|
683 static struct frame* wm_initmenu_frame;
|
|
|
684
|
|
|
685 static Lisp_Object
|
|
|
686 unsafe_handle_wm_initmenupopup (Lisp_Object u_n_u_s_e_d)
|
|
|
687 {
|
|
|
688 return unsafe_handle_wm_initmenupopup_1 (wm_initmenu_menu, wm_initmenu_frame);
|
|
|
689 }
|
|
|
690
|
|
|
691 static Lisp_Object
|
|
|
692 unsafe_handle_wm_initmenu (Lisp_Object u_n_u_s_e_d)
|
|
|
693 {
|
|
|
694 return unsafe_handle_wm_initmenu_1 (wm_initmenu_frame);
|
|
|
695 }
|
|
|
696
|
|
|
697 Lisp_Object
|
|
|
698 mswindows_handle_wm_initmenupopup (HMENU hmenu, struct frame* frm)
|
|
|
699 {
|
|
|
700 /* We cannot pass hmenu as a lisp object. Use static var */
|
|
|
701 wm_initmenu_menu = hmenu;
|
|
|
702 wm_initmenu_frame = frm;
|
|
|
703 return mswindows_protect_modal_loop (unsafe_handle_wm_initmenupopup, Qnil);
|
|
|
704 }
|
|
|
705
|
|
|
706 Lisp_Object
|
|
|
707 mswindows_handle_wm_initmenu (HMENU hmenu, struct frame* f)
|
|
|
708 {
|
|
|
709 /* Handle only frame menubar, ignore if from popup or system menu */
|
|
|
710 if (GetMenu (FRAME_MSWINDOWS_HANDLE(f)) == hmenu)
|
|
|
711 {
|
|
|
712 wm_initmenu_frame = f;
|
|
|
713 return mswindows_protect_modal_loop (unsafe_handle_wm_initmenu, Qnil);
|
|
|
714 }
|
|
|
715 return Qt;
|
|
|
716 }
|
|
|
717
|
|
|
718
|
|
|
719 /*------------------------------------------------------------------------*/
|
|
|
720 /* Methods */
|
|
|
721 /*------------------------------------------------------------------------*/
|
|
|
722
|
|
|
723 static void
|
|
|
724 mswindows_update_frame_menubars (struct frame* f)
|
|
|
725 {
|
|
|
726 update_frame_menubar_maybe (f);
|
|
|
727 }
|
|
|
728
|
|
|
729 static void
|
|
|
730 mswindows_free_frame_menubars (struct frame* f)
|
|
|
731 {
|
|
|
732 FRAME_MSWINDOWS_MENU_HASH_TABLE(f) = Qnil;
|
|
|
733 }
|
|
|
734
|
|
|
735 static void
|
|
|
736 mswindows_popup_menu (Lisp_Object menu_desc, Lisp_Object event)
|
|
|
737 {
|
|
|
738 struct frame *f = selected_frame ();
|
|
|
739 struct Lisp_Event *eev = NULL;
|
|
|
740 HMENU menu;
|
|
|
741 POINT pt;
|
|
|
742 int ok;
|
|
|
743
|
|
|
744 if (!NILP (event))
|
|
|
745 {
|
|
|
746 CHECK_LIVE_EVENT (event);
|
|
|
747 eev = XEVENT (event);
|
|
|
748 if (eev->event_type != button_press_event
|
|
|
749 && eev->event_type != button_release_event)
|
|
|
750 wrong_type_argument (Qmouse_event_p, event);
|
|
|
751 }
|
|
|
752 else if (!NILP (Vthis_command_keys))
|
|
|
753 {
|
|
|
754 /* if an event wasn't passed, use the last event of the event sequence
|
|
|
755 currently being executed, if that event is a mouse event */
|
|
|
756 eev = XEVENT (Vthis_command_keys); /* last event first */
|
|
|
757 if (eev->event_type != button_press_event
|
|
|
758 && eev->event_type != button_release_event)
|
|
|
759 eev = NULL;
|
|
|
760 }
|
|
|
761
|
|
|
762 /* Default is to put the menu at the point (10, 10) in frame */
|
|
|
763 if (eev)
|
|
|
764 {
|
|
|
765 pt.x = eev->event.button.x;
|
|
|
766 pt.y = eev->event.button.y;
|
|
|
767 ClientToScreen (FRAME_MSWINDOWS_HANDLE (f), &pt);
|
|
|
768 }
|
|
|
769 else
|
|
|
770 pt.x = pt.y = 10;
|
|
|
771
|
|
|
772 if (SYMBOLP (menu_desc))
|
|
|
773 menu_desc = Fsymbol_value (menu_desc);
|
|
|
774 CHECK_CONS (menu_desc);
|
|
|
775 CHECK_STRING (XCAR (menu_desc));
|
|
|
776
|
|
|
777 current_menudesc = menu_desc;
|
|
|
778 current_hash_table =
|
|
|
779 make_lisp_hash_table (10, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
|
|
|
780 menu = create_empty_popup_menu();
|
|
|
781 Fputhash (hmenu_to_lisp_object (menu), Qnil, current_hash_table);
|
|
|
782 top_level_menu = menu;
|
|
|
783
|
|
|
784 /* see comments in menubar-x.c */
|
|
|
785 if (zmacs_regions)
|
|
|
786 zmacs_region_stays = 1;
|
|
|
787
|
|
|
788 ok = TrackPopupMenu (menu,
|
|
|
789 TPM_LEFTALIGN | TPM_LEFTBUTTON | TPM_RIGHTBUTTON,
|
|
|
790 pt.x, pt.y, 0,
|
|
|
791 FRAME_MSWINDOWS_HANDLE (f), NULL);
|
|
|
792
|
|
|
793 DestroyMenu (menu);
|
|
|
794
|
|
|
795 /* Signal a signal if caught by Track...() modal loop */
|
|
|
796 mswindows_unmodalize_signal_maybe ();
|
|
|
797
|
|
|
798 /* This is probably the only real reason for failure */
|
|
|
799 if (!ok) {
|
|
|
800 menu_cleanup (f);
|
|
|
801 signal_simple_error ("Cannot track popup menu while in menu",
|
|
|
802 menu_desc);
|
|
|
803 }
|
|
|
804 }
|
|
|
805
|
|
|
806
|
|
|
807 /*------------------------------------------------------------------------*/
|
|
|
808 /* Initialization */
|
|
|
809 /*------------------------------------------------------------------------*/
|
|
|
810 void
|
|
|
811 syms_of_menubar_mswindows (void)
|
|
|
812 {
|
|
|
813 }
|
|
|
814
|
|
|
815 void
|
|
|
816 console_type_create_menubar_mswindows (void)
|
|
|
817 {
|
|
|
818 CONSOLE_HAS_METHOD (mswindows, update_frame_menubars);
|
|
|
819 CONSOLE_HAS_METHOD (mswindows, free_frame_menubars);
|
|
|
820 CONSOLE_HAS_METHOD (mswindows, popup_menu);
|
|
|
821 }
|
|
|
822
|
|
|
823 void
|
|
|
824 vars_of_menubar_mswindows (void)
|
|
|
825 {
|
|
|
826 current_menudesc = Qnil;
|
|
|
827 current_hash_table = Qnil;
|
|
|
828
|
|
|
829 staticpro (¤t_menudesc);
|
|
|
830 staticpro (¤t_hash_table);
|
|
|
831 }
|
