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comparison src/dialog-x.c @ 0:376386a54a3c r19-14

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date Mon, 13 Aug 2007 08:45:50 +0200
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1 /* Implements elisp-programmable dialog boxes -- X interface.
2 Copyright (C) 1993, 1994 Free Software Foundation, Inc.
3 Copyright (C) 1995 Tinker Systems and INS Engineering Corp.
4
5 This file is part of XEmacs.
6
7 XEmacs is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
10 later version.
11
12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with XEmacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
22 /* Synched up with: Not in FSF. */
23
24 #include <config.h>
25 #include "lisp.h"
26
27 #include "console-x.h"
28 #include "EmacsManager.h"
29 #include "EmacsFrame.h"
30 #include "EmacsShell.h"
31 #include "gui-x.h"
32
33 #include "buffer.h"
34 #include "commands.h" /* zmacs_regions */
35 #include "events.h"
36 #include "frame.h"
37 #include "opaque.h"
38 #include "window.h"
39
40
41 static void
42 maybe_run_dbox_text_callback (LWLIB_ID id)
43 {
44 /* !!#### This function has not been Mule-ized */
45 widget_value *wv;
46 int got_some;
47 wv = xmalloc_widget_value ();
48 wv->name = "value";
49 got_some = lw_get_some_values (id, wv);
50 if (got_some)
51 {
52 Lisp_Object text_field_callback;
53 char *text_field_value = wv->value;
54 VOID_TO_LISP (text_field_callback, wv->call_data);
55 if (text_field_value)
56 {
57 void *tmp = LISP_TO_VOID (list2 (text_field_callback,
58 build_string (text_field_value)));
59 popup_selection_callback (0, id, (XtPointer) tmp);
60 xfree (text_field_value);
61 }
62 }
63 free_widget_value (wv);
64 }
65
66 static void
67 dbox_selection_callback (Widget widget, LWLIB_ID id, XtPointer client_data)
68 {
69 /* This is called with client_data == -1 when WM_DELETE_WINDOW is sent
70 instead of a button being selected. */
71 struct device *d = get_device_from_display (XtDisplay (widget));
72 struct frame *f = 0;
73 Widget cur_widget = widget;
74
75 /* The parent which is actually connected to our EmacsFrame may be a
76 ways up the tree. */
77 while (!f && cur_widget)
78 {
79 f = x_any_window_to_frame (d, XtWindow (cur_widget));
80 cur_widget = XtParent (cur_widget);
81 }
82
83 if (popup_handled_p (id))
84 return;
85 assert (popup_up_p != 0);
86 ungcpro_popup_callbacks (id);
87 popup_up_p--;
88 maybe_run_dbox_text_callback (id);
89 popup_selection_callback (widget, id, client_data);
90 lw_destroy_all_widgets (id);
91
92 /* The Motif dialog box sets the keyboard focus to itself. When it
93 goes away we have to take care of getting the focus back
94 ourselves. */
95 #ifdef EXTERNAL_WIDGET
96 /* #### Not sure if this special case is necessary. */
97 if (!FRAME_X_EXTERNAL_WINDOW_P (f) && f)
98 #else
99 if (f)
100 #endif
101 lw_set_keyboard_focus (FRAME_X_SHELL_WIDGET (f), FRAME_X_TEXT_WIDGET (f));
102 }
103
104 static CONST char * CONST button_names [] = {
105 "button1", "button2", "button3", "button4", "button5",
106 "button6", "button7", "button8", "button9", "button10" };
107
108 /* can't have static frame locals because of some broken compilers */
109 static char tmp_dbox_name [255];
110
111 static widget_value *
112 dbox_descriptor_to_widget_value (Lisp_Object desc)
113 {
114 /* !!#### This function has not been Mule-ized */
115 /* This function can GC */
116 char *name;
117 int lbuttons = 0, rbuttons = 0;
118 int partition_seen = 0;
119 int text_field_p = 0;
120 int allow_text_p = 1;
121 widget_value *prev = 0, *kids = 0;
122 int n = 0;
123 int count = specpdl_depth ();
124 Lisp_Object wv_closure;
125
126 CHECK_CONS (desc);
127 CHECK_STRING (XCAR (desc));
128 name = (char *) string_data (XSTRING (LISP_GETTEXT (XCAR (desc))));
129 desc = XCDR (desc);
130 if (!CONSP (desc))
131 error ("dialog boxes must have some buttons");
132
133 /* Inhibit GC during this conversion. The reasons for this are
134 the same as in menu_item_descriptor_to_widget_value(); see
135 the large comment above that function. */
136
137 record_unwind_protect (restore_gc_inhibit,
138 make_int (gc_currently_forbidden));
139 gc_currently_forbidden = 1;
140
141 kids = prev = xmalloc_widget_value ();
142
143 /* Also make sure that we free the partially-created widget_value
144 tree on Lisp error. */
145
146 wv_closure = make_opaque_ptr (kids);
147 record_unwind_protect (widget_value_unwind, wv_closure);
148 prev->name = "message";
149 prev->value = xstrdup (name);
150 prev->enabled = 1;
151
152 for (; !NILP (desc); desc = Fcdr (desc))
153 {
154 Lisp_Object button = XCAR (desc);
155 widget_value *wv;
156
157 if (NILP (button))
158 {
159 if (partition_seen)
160 error ("more than one partition (nil) seen in dbox spec");
161 partition_seen = 1;
162 continue;
163 }
164 CHECK_VECTOR (button);
165 wv = xmalloc_widget_value ();
166
167 if (!button_item_to_widget_value (button, wv, allow_text_p, 1))
168 {
169 free_widget_value (wv);
170 continue;
171 }
172
173 if (wv->type == TEXT_TYPE)
174 {
175 text_field_p = 1;
176 allow_text_p = 0; /* only allow one */
177 }
178 else /* it's a button */
179 {
180 allow_text_p = 0; /* only allow text field at the front */
181 wv->value = xstrdup (wv->name); /* what a mess... */
182 wv->name = (char *) button_names [n];
183
184 if (partition_seen)
185 rbuttons++;
186 else
187 lbuttons++;
188 n++;
189
190 if (lbuttons > 9 || rbuttons > 9)
191 error ("too many buttons (9)"); /* #### this leaks */
192 }
193
194 prev->next = wv;
195 prev = wv;
196 }
197
198 if (n == 0)
199 error ("dialog boxes must have some buttons");
200 {
201 char type = (text_field_p ? 'P' : 'Q');
202 widget_value *dbox;
203 sprintf (tmp_dbox_name, "%c%dBR%d", type, lbuttons + rbuttons, rbuttons);
204 dbox = xmalloc_widget_value ();
205 dbox->name = tmp_dbox_name;
206 dbox->contents = kids;
207
208 /* No more need to free the half-filled-in structures. */
209 set_opaque_ptr (wv_closure, 0);
210 unbind_to (count, Qnil);
211 return dbox;
212 }
213 }
214
215 DEFUN ("popup-dialog-box", Fpopup_dialog_box, Spopup_dialog_box, 1, 1, 0 /*
216 Pop up a dialog box.
217 A dialog box description is a list.
218
219 The first element of a dialog box must be a string, which is the title or
220 question.
221
222 The rest of the elements are descriptions of the dialog box's buttons.
223 Each of these is a vector, the syntax of which is essentially the same as
224 that of popup menu items. They may have any of the following forms:
225
226 [ \"name\" callback <active-p> ]
227 [ \"name\" callback <active-p> \"suffix\" ]
228 [ \"name\" callback :<keyword> <value> :<keyword> <value> ... ]
229
230 The name is the string to display on the button; it is filtered through the
231 resource database, so it is possible for resources to override what string
232 is actually displayed.
233
234 If the `callback' of a button is a symbol, then it must name a command.
235 It will be invoked with `call-interactively'. If it is a list, then it is
236 evaluated with `eval'.
237
238 One (and only one) of the buttons may be `nil'. This marker means that all
239 following buttons should be flushright instead of flushleft.
240
241 Though the keyword/value syntax is supported for dialog boxes just as in
242 popup menus, the only keyword which is both meaningful and fully implemented
243 for dialog box buttons is `:active'.
244 */ )
245 (dbox_desc)
246 Lisp_Object dbox_desc;
247 {
248 int dbox_id;
249 struct frame *f = selected_frame ();
250 widget_value *data;
251 Widget parent, dbox;
252 Lisp_Object frame = Qnil;
253
254 XSETFRAME (frame, f);
255
256 CHECK_X_FRAME (frame);
257 if (SYMBOLP (dbox_desc))
258 dbox_desc = Fsymbol_value (dbox_desc);
259 CHECK_CONS (dbox_desc);
260 CHECK_STRING (XCAR (dbox_desc));
261 data = dbox_descriptor_to_widget_value (dbox_desc);
262
263 parent = FRAME_X_SHELL_WIDGET (f);
264
265 dbox_id = new_lwlib_id ();
266 dbox = lw_create_widget (data->name, "dialog", dbox_id, data, parent, 1, 0,
267 dbox_selection_callback, 0);
268 lw_modify_all_widgets (dbox_id, data, True);
269 lw_modify_all_widgets (dbox_id, data->contents, True);
270 free_popup_widget_value_tree (data);
271
272 gcpro_popup_callbacks (dbox_id);
273
274 /* Setting zmacs-region-stays is necessary here because executing a
275 command from a dialog is really a two-command process: the first
276 command (bound to the button-click) simply pops up the dialog,
277 and returns. This causes a sequence of magic-events (destined
278 for the dialog widget) to begin. Eventually, a dialog item is
279 selected, and a misc-user-event blip is pushed onto the end of
280 the input stream, which is then executed by the event loop.
281
282 So there are two command-events, with a bunch of magic-events
283 between them. We don't want the *first* command event to alter
284 the state of the region, so that the region can be available as
285 an argument for the second command. */
286 if (zmacs_regions)
287 zmacs_region_stays = 1;
288
289 popup_up_p++;
290 lw_pop_up_all_widgets (dbox_id);
291 return Qnil;
292 }
293
294 void
295 syms_of_dialog_x (void)
296 {
297 defsubr (&Spopup_dialog_box);
298 }
299
300 void
301 vars_of_dialog_x (void)
302 {
303 #if defined (LWLIB_DIALOGS_LUCID)
304 Fprovide (intern ("lucid-dialogs"));
305 #elif defined (LWLIB_DIALOGS_MOTIF)
306 Fprovide (intern ("motif-dialogs"));
307 #elif defined (LWLIB_DIALOGS_ATHENA)
308 Fprovide (intern ("athena-dialogs"));
309 #endif
310 }