Implemented wxEventLoop for wxMotif, and used it in wxDialog::ShowModal,
[wxWidgets.git] / src / motif / menu.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: menu.cpp
3 // Purpose: wxMenu, wxMenuBar, wxMenuItem
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 17/09/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12
13 // ============================================================================
14 // declarations
15 // ============================================================================
16
17 #ifdef __GNUG__
18 #pragma implementation "menu.h"
19 #endif
20
21 // ----------------------------------------------------------------------------
22 // headers
23 // ----------------------------------------------------------------------------
24
25 #include "wx/defs.h"
26
27 #include "wx/menu.h"
28 #include "wx/menuitem.h"
29 #include "wx/log.h"
30 #include "wx/utils.h"
31 #include "wx/app.h"
32 #include "wx/frame.h"
33 #include "wx/settings.h"
34
35 #ifdef __VMS__
36 #pragma message disable nosimpint
37 #define XtDisplay XTDISPLAY
38 #define XtWindow XTWINDOW
39 #endif
40 #include <Xm/Label.h>
41 #include <Xm/LabelG.h>
42 #include <Xm/CascadeBG.h>
43 #include <Xm/CascadeB.h>
44 #include <Xm/SeparatoG.h>
45 #include <Xm/PushBG.h>
46 #include <Xm/ToggleB.h>
47 #include <Xm/ToggleBG.h>
48 #include <Xm/RowColumn.h>
49 #ifdef __VMS__
50 #pragma message enable nosimpint
51 #endif
52
53 #include "wx/motif/private.h"
54
55 // other standard headers
56 #include <string.h>
57
58 IMPLEMENT_DYNAMIC_CLASS(wxMenu, wxEvtHandler)
59 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar, wxEvtHandler)
60
61 // ============================================================================
62 // implementation
63 // ============================================================================
64
65 // ----------------------------------------------------------------------------
66 // Menus
67 // ----------------------------------------------------------------------------
68
69 // Construct a menu with optional title (then use append)
70 void wxMenu::Init()
71 {
72 // Motif-specific members
73 m_numColumns = 1;
74 m_menuWidget = (WXWidget) NULL;
75 m_popupShell = (WXWidget) NULL;
76 m_buttonWidget = (WXWidget) NULL;
77 m_menuId = 0;
78 m_topLevelMenu = (wxMenu*) NULL;
79 m_ownedByMenuBar = FALSE;
80
81 if ( !!m_title )
82 {
83 Append(wxID_SEPARATOR, m_title) ;
84 AppendSeparator() ;
85 }
86
87 m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_MENU);
88 m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_MENUTEXT);
89 m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
90 }
91
92 // The wxWindow destructor will take care of deleting the submenus.
93 wxMenu::~wxMenu()
94 {
95 if (m_menuWidget)
96 {
97 if (m_menuParent)
98 DestroyMenu(TRUE);
99 else
100 DestroyMenu(FALSE);
101 }
102
103 // Not sure if this is right
104 if (m_menuParent && m_menuBar)
105 {
106 m_menuParent = NULL;
107 // m_menuBar = NULL;
108 }
109 }
110
111 void wxMenu::Break()
112 {
113 m_numColumns++;
114 }
115
116 // function appends a new item or submenu to the menu
117 bool wxMenu::DoAppend(wxMenuItem *pItem)
118 {
119 if (m_menuWidget)
120 {
121 // this is a dynamic Append
122 pItem->CreateItem(m_menuWidget, m_menuBar, m_topLevelMenu);
123 }
124
125 if ( pItem->IsSubMenu() )
126 {
127 pItem->GetSubMenu()->m_topLevelMenu = m_topLevelMenu;
128 }
129
130 return wxMenuBase::DoAppend(pItem);
131 }
132
133 wxMenuItem *wxMenu::DoRemove(wxMenuItem *item)
134 {
135 item->DestroyItem(TRUE);
136
137 return wxMenuBase::DoRemove(item);
138 }
139
140 bool wxMenu::DoInsert(size_t pos, wxMenuItem *item)
141 {
142 if ( wxMenuBase::DoInsert(pos, item) )
143 return TRUE;
144
145 wxFAIL_MSG(wxT("DoInsert not implemented; or error in wxMenuBase::DoInsert"));
146
147 return FALSE;
148 }
149
150 void wxMenu::SetTitle(const wxString& label)
151 {
152 m_title = label;
153
154 wxMenuItemList::Node *node = GetMenuItems().GetFirst();
155 if ( !node )
156 return;
157
158 wxMenuItem *item = node->GetData ();
159 Widget widget = (Widget) item->GetButtonWidget();
160 if ( !widget )
161 return;
162
163 wxXmString title_str(label);
164 XtVaSetValues(widget,
165 XmNlabelString, title_str(),
166 NULL);
167 }
168
169 bool wxMenu::ProcessCommand(wxCommandEvent & event)
170 {
171 bool processed = FALSE;
172
173 #if wxUSE_MENU_CALLBACK
174 // Try a callback
175 if (m_callback)
176 {
177 (void) (*(m_callback)) (*this, event);
178 processed = TRUE;
179 }
180 #endif // wxUSE_MENU_CALLBACK
181
182 // Try the menu's event handler
183 if ( !processed && GetEventHandler())
184 {
185 processed = GetEventHandler()->ProcessEvent(event);
186 }
187 // Try the window the menu was popped up from (and up
188 // through the hierarchy)
189 if ( !processed && GetInvokingWindow())
190 processed = GetInvokingWindow()->ProcessEvent(event);
191
192 return processed;
193 }
194
195 // ----------------------------------------------------------------------------
196 // Menu Bar
197 // ----------------------------------------------------------------------------
198
199 void wxMenuBar::Init()
200 {
201 m_eventHandler = this;
202 m_menuBarFrame = NULL;
203 m_mainWidget = (WXWidget) NULL;
204 m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_MENU);
205 m_foregroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_MENUTEXT);
206 m_font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
207 }
208
209 wxMenuBar::wxMenuBar(int n, wxMenu *menus[], const wxString titles[])
210 {
211 Init();
212
213 for ( int i = 0; i < n; i++ )
214 {
215 m_menus.Append(menus[i]);
216 m_titles.Add(titles[i]);
217 }
218 }
219
220 wxMenuBar::~wxMenuBar()
221 {
222 // nothing to do: wxMenuBarBase will delete the menus
223 }
224
225 void wxMenuBar::EnableTop(size_t WXUNUSED(pos), bool WXUNUSED(flag))
226 {
227 // wxFAIL_MSG("TODO");
228 // wxLogWarning("wxMenuBar::EnableTop not yet implemented.");
229 }
230
231 void wxMenuBar::SetLabelTop(size_t pos, const wxString& label)
232 {
233 wxMenu *menu = GetMenu(pos);
234 if ( !menu )
235 return;
236
237 Widget w = (Widget)menu->GetButtonWidget();
238 if (w)
239 {
240 wxXmString label_str(label);
241
242 XtVaSetValues(w,
243 XmNlabelString, label_str(),
244 NULL);
245 }
246 }
247
248 wxString wxMenuBar::GetLabelTop(size_t pos) const
249 {
250 wxString str;
251
252 wxMenu *menu = GetMenu(pos);
253 if ( menu )
254 {
255 Widget w = (Widget)menu->GetButtonWidget();
256 if (w)
257 {
258 XmString text;
259 XtVaGetValues(w,
260 XmNlabelString, &text,
261 NULL);
262
263 char *s;
264 if ( XmStringGetLtoR(text, XmSTRING_DEFAULT_CHARSET, &s) )
265 {
266 str = s;
267
268 XtFree(s);
269 }
270 }
271 }
272
273 return str;
274 }
275
276 bool wxMenuBar::Append(wxMenu * menu, const wxString& title)
277 {
278 wxCHECK_MSG( menu, FALSE, wxT("invalid menu") );
279 wxCHECK_MSG( !menu->GetParent() && !menu->GetButtonWidget(), FALSE,
280 wxT("menu already appended") );
281
282 if ( m_menuBarFrame )
283 {
284 WXWidget w = menu->CreateMenu(this, GetMainWidget(), menu, title, TRUE);
285 wxCHECK_MSG( w, FALSE, wxT("failed to create menu") );
286 menu->SetButtonWidget(w);
287 }
288
289 //menu->SetMenuBar(this);
290
291 m_titles.Add(title);
292
293 return wxMenuBarBase::Append(menu, title);
294 }
295
296 bool wxMenuBar::Insert(size_t pos, wxMenu *menu, const wxString& title)
297 {
298 if ( !wxMenuBarBase::Insert(pos, menu, title) )
299 return FALSE;
300
301 wxFAIL_MSG(wxT("TODO"));
302
303 return FALSE;
304 }
305
306 wxMenu *wxMenuBar::Replace(size_t pos, wxMenu *menu, const wxString& title)
307 {
308 if ( !wxMenuBarBase::Replace(pos, menu, title) )
309 return NULL;
310
311 wxFAIL_MSG(wxT("TODO"));
312
313 return NULL;
314 }
315
316 wxMenu *wxMenuBar::Remove(size_t pos)
317 {
318 wxMenu *menu = wxMenuBarBase::Remove(pos);
319 if ( !menu )
320 return NULL;
321
322 if ( m_menuBarFrame )
323 menu->DestroyMenu(TRUE);
324
325 menu->SetMenuBar(NULL);
326
327 m_titles.Remove(pos);
328
329 return menu;
330 }
331
332 // Find the menu menuString, item itemString, and return the item id.
333 // Returns -1 if none found.
334 int wxMenuBar::FindMenuItem (const wxString& menuString, const wxString& itemString) const
335 {
336 char buf1[200];
337 char buf2[200];
338 wxStripMenuCodes ((char *)(const char *)menuString, buf1);
339
340 size_t menuCount = GetMenuCount();
341 for (size_t i = 0; i < menuCount; i++)
342 {
343 wxStripMenuCodes ((char *)(const char *)m_titles[i], buf2);
344 if (strcmp (buf1, buf2) == 0)
345 return m_menus[i]->FindItem (itemString);
346 }
347 return -1;
348 }
349
350 wxMenuItem *wxMenuBar::FindItem(int id, wxMenu ** itemMenu) const
351 {
352 if (itemMenu)
353 *itemMenu = NULL;
354
355 wxMenuItem *item = NULL;
356 size_t menuCount = GetMenuCount();
357 for (size_t i = 0; i < menuCount; i++)
358 if ((item = m_menus[i]->FindItem(id, itemMenu)))
359 return item;
360 return NULL;
361 }
362
363 // Create menubar
364 bool wxMenuBar::CreateMenuBar(wxFrame* parent)
365 {
366 if (m_mainWidget)
367 {
368 XtVaSetValues((Widget) parent->GetMainWidget(), XmNmenuBar, (Widget) m_mainWidget, NULL);
369 /*
370 if (!XtIsManaged((Widget) m_mainWidget))
371 XtManageChild((Widget) m_mainWidget);
372 */
373 XtMapWidget((Widget) m_mainWidget);
374 return TRUE;
375 }
376
377 Widget menuBarW = XmCreateMenuBar ((Widget) parent->GetMainWidget(), "MenuBar", NULL, 0);
378 m_mainWidget = (WXWidget) menuBarW;
379
380 size_t menuCount = GetMenuCount();
381 for (size_t i = 0; i < menuCount; i++)
382 {
383 wxMenu *menu = GetMenu(i);
384 wxString title(m_titles[i]);
385 menu->SetButtonWidget(menu->CreateMenu (this, menuBarW, menu, title, TRUE));
386
387 if (strcmp (wxStripMenuCodes(title), "Help") == 0)
388 XtVaSetValues ((Widget) menuBarW, XmNmenuHelpWidget, (Widget) menu->GetButtonWidget(), NULL);
389
390 // tear off menu support
391 #if (XmVersion >= 1002)
392 if ( menu->IsTearOff() )
393 {
394 XtVaSetValues(GetWidget(menu),
395 XmNtearOffModel, XmTEAR_OFF_ENABLED,
396 NULL);
397 Widget tearOff = XmGetTearOffControl(GetWidget(menu));
398 wxDoChangeForegroundColour((Widget) tearOff, m_foregroundColour);
399 wxDoChangeBackgroundColour((Widget) tearOff, m_backgroundColour, TRUE);
400 #endif
401 }
402 }
403
404 SetBackgroundColour(m_backgroundColour);
405 SetForegroundColour(m_foregroundColour);
406 SetFont(m_font);
407
408 XtVaSetValues((Widget) parent->GetMainWidget(), XmNmenuBar, (Widget) m_mainWidget, NULL);
409 XtRealizeWidget ((Widget) menuBarW);
410 XtManageChild ((Widget) menuBarW);
411 SetMenuBarFrame(parent);
412
413 return TRUE;
414 }
415
416 // Destroy menubar, but keep data structures intact so we can recreate it.
417 bool wxMenuBar::DestroyMenuBar()
418 {
419 if (!m_mainWidget)
420 {
421 SetMenuBarFrame((wxFrame*) NULL);
422 return FALSE;
423 }
424
425 XtUnmanageChild ((Widget) m_mainWidget);
426 XtUnrealizeWidget ((Widget) m_mainWidget);
427
428 size_t menuCount = GetMenuCount();
429 for (size_t i = 0; i < menuCount; i++)
430 {
431 wxMenu *menu = GetMenu(i);
432 menu->DestroyMenu(TRUE);
433
434 }
435 XtDestroyWidget((Widget) m_mainWidget);
436 m_mainWidget = (WXWidget) 0;
437
438 SetMenuBarFrame((wxFrame*) NULL);
439
440 return TRUE;
441 }
442
443 // Since PopupMenu under Motif stills grab right mouse button events
444 // after it was closed, we need to delete the associated widgets to
445 // allow next PopUpMenu to appear...
446 void wxMenu::DestroyWidgetAndDetach()
447 {
448 if (GetMainWidget())
449 {
450 wxMenu *menuParent = GetParent();
451 if ( menuParent )
452 {
453 wxMenuItemList::Node *node = menuParent->GetMenuItems().GetFirst();
454 while ( node )
455 {
456 if ( node->GetData()->GetSubMenu() == this )
457 {
458 menuParent->GetMenuItems().DeleteNode(node);
459
460 break;
461 }
462
463 node = node->GetNext();
464 }
465 }
466
467 DestroyMenu(TRUE);
468 }
469
470 // Mark as no longer popped up
471 m_menuId = -1;
472 }
473
474 /*
475 * Create a popup or pulldown menu.
476 * Submenus of a popup will be pulldown.
477 *
478 */
479
480 WXWidget wxMenu::CreateMenu (wxMenuBar * menuBar, WXWidget parent, wxMenu * topMenu, const wxString& title, bool pullDown)
481 {
482 Widget menu = (Widget) 0;
483 Widget buttonWidget = (Widget) 0;
484 Arg args[5];
485 XtSetArg (args[0], XmNnumColumns, m_numColumns);
486 XtSetArg (args[1], XmNpacking, (m_numColumns > 1) ? XmPACK_COLUMN : XmPACK_TIGHT);
487
488 if (!pullDown)
489 {
490 menu = XmCreatePopupMenu ((Widget) parent, "popup", args, 2);
491 #if 0
492 XtAddCallback(menu,
493 XmNunmapCallback,
494 (XtCallbackProc)wxMenuPopdownCallback,
495 (XtPointer)this);
496 #endif
497 }
498 else
499 {
500 char mnem = wxFindMnemonic (title);
501 menu = XmCreatePulldownMenu ((Widget) parent, "pulldown", args, 2);
502
503 wxString title2(wxStripMenuCodes(title));
504 wxXmString label_str(title2);
505 buttonWidget = XtVaCreateManagedWidget(title2,
506 #if wxUSE_GADGETS
507 xmCascadeButtonGadgetClass, (Widget) parent,
508 #else
509 xmCascadeButtonWidgetClass, (Widget) parent,
510 #endif
511 XmNlabelString, label_str(),
512 XmNsubMenuId, menu,
513 NULL);
514
515 if (mnem != 0)
516 XtVaSetValues (buttonWidget, XmNmnemonic, mnem, NULL);
517 }
518
519 m_menuWidget = (WXWidget) menu;
520
521 m_menuBar = menuBar;
522 m_topLevelMenu = topMenu;
523
524 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
525 node;
526 node = node->GetNext() )
527 {
528 wxMenuItem *item = node->GetData();
529
530 item->CreateItem(menu, menuBar, topMenu);
531 }
532
533 SetBackgroundColour(m_backgroundColour);
534 SetForegroundColour(m_foregroundColour);
535 SetFont(m_font);
536
537 return buttonWidget;
538 }
539
540 // Destroys the Motif implementation of the menu,
541 // but maintains the wxWindows data structures so we can
542 // do a CreateMenu again.
543 void wxMenu::DestroyMenu (bool full)
544 {
545 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
546 node;
547 node = node->GetNext() )
548 {
549 wxMenuItem *item = node->GetData();
550 item->SetMenuBar((wxMenuBar*) NULL);
551
552 item->DestroyItem(full);
553 }
554
555 if (m_buttonWidget)
556 {
557 if (full)
558 {
559 XtVaSetValues((Widget) m_buttonWidget, XmNsubMenuId, NULL, NULL);
560 XtDestroyWidget ((Widget) m_buttonWidget);
561 m_buttonWidget = (WXWidget) 0;
562 }
563 }
564 if (m_menuWidget && full)
565 {
566 XtDestroyWidget((Widget) m_menuWidget);
567 m_menuWidget = (WXWidget) NULL;
568 }
569 }
570
571 WXWidget wxMenu::FindMenuItem (int id, wxMenuItem ** it) const
572 {
573 if (id == m_menuId)
574 {
575 if (it)
576 *it = (wxMenuItem*) NULL;
577 return m_buttonWidget;
578 }
579
580 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
581 node;
582 node = node->GetNext() )
583 {
584 wxMenuItem *item = node->GetData ();
585 if (item->GetId() == id)
586 {
587 if (it)
588 *it = item;
589 return item->GetButtonWidget();
590 }
591
592 if (item->GetSubMenu())
593 {
594 WXWidget w = item->GetSubMenu()->FindMenuItem (id, it);
595 if (w)
596 {
597 return w;
598 }
599 }
600 }
601
602 if (it)
603 *it = (wxMenuItem*) NULL;
604 return (WXWidget) NULL;
605 }
606
607 void wxMenu::SetBackgroundColour(const wxColour& col)
608 {
609 m_backgroundColour = col;
610 if (m_menuWidget)
611 wxDoChangeBackgroundColour(m_menuWidget, (wxColour&) col);
612 if (m_buttonWidget)
613 wxDoChangeBackgroundColour(m_buttonWidget, (wxColour&) col, TRUE);
614
615 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
616 node;
617 node = node->GetNext() )
618 {
619 wxMenuItem* item = node->GetData();
620 if (item->GetButtonWidget())
621 {
622 // This crashes because it uses gadgets
623 // wxDoChangeBackgroundColour(item->GetButtonWidget(), (wxColour&) col, TRUE);
624 }
625 if (item->GetSubMenu())
626 item->GetSubMenu()->SetBackgroundColour((wxColour&) col);
627 }
628 }
629
630 void wxMenu::SetForegroundColour(const wxColour& col)
631 {
632 m_foregroundColour = col;
633 if (m_menuWidget)
634 wxDoChangeForegroundColour(m_menuWidget, (wxColour&) col);
635 if (m_buttonWidget)
636 wxDoChangeForegroundColour(m_buttonWidget, (wxColour&) col);
637
638 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
639 node;
640 node = node->GetNext() )
641 {
642 wxMenuItem* item = node->GetData();
643 if (item->GetButtonWidget())
644 {
645 // This crashes because it uses gadgets
646 // wxDoChangeForegroundColour(item->GetButtonWidget(), (wxColour&) col);
647 }
648 if (item->GetSubMenu())
649 item->GetSubMenu()->SetForegroundColour((wxColour&) col);
650 }
651 }
652
653 void wxMenu::ChangeFont(bool keepOriginalSize)
654 {
655 // lesstif 0.87 hangs when setting XmNfontList
656 #ifndef LESSTIF_VERSION
657 if (!m_font.Ok() || !m_menuWidget)
658 return;
659
660 XmFontList fontList = (XmFontList) m_font.GetFontList(1.0, XtDisplay((Widget) m_menuWidget));
661
662 XtVaSetValues ((Widget) m_menuWidget,
663 XmNfontList, fontList,
664 NULL);
665 if (m_buttonWidget)
666 {
667 XtVaSetValues ((Widget) m_buttonWidget,
668 XmNfontList, fontList,
669 NULL);
670 }
671
672 for ( wxMenuItemList::Node *node = GetMenuItems().GetFirst();
673 node;
674 node = node->GetNext() )
675 {
676 wxMenuItem* item = node->GetData();
677 if (m_menuWidget && item->GetButtonWidget() && m_font.Ok())
678 {
679 XtVaSetValues ((Widget) item->GetButtonWidget(),
680 XmNfontList, fontList,
681 NULL);
682 }
683 if (item->GetSubMenu())
684 item->GetSubMenu()->ChangeFont(keepOriginalSize);
685 }
686 #endif
687 }
688
689 void wxMenu::SetFont(const wxFont& font)
690 {
691 m_font = font;
692 ChangeFont();
693 }
694
695 bool wxMenuBar::SetBackgroundColour(const wxColour& col)
696 {
697 m_backgroundColour = col;
698 if (m_mainWidget)
699 wxDoChangeBackgroundColour(m_mainWidget, (wxColour&) col);
700
701 size_t menuCount = GetMenuCount();
702 for (size_t i = 0; i < menuCount; i++)
703 m_menus[i]->SetBackgroundColour((wxColour&) col);
704
705 return TRUE;
706 }
707
708 bool wxMenuBar::SetForegroundColour(const wxColour& col)
709 {
710 m_foregroundColour = col;
711 if (m_mainWidget)
712 wxDoChangeForegroundColour(m_mainWidget, (wxColour&) col);
713
714 size_t menuCount = GetMenuCount();
715 for (size_t i = 0; i < menuCount; i++)
716 m_menus[i]->SetForegroundColour((wxColour&) col);
717
718 return TRUE;
719 }
720
721 void wxMenuBar::ChangeFont(bool WXUNUSED(keepOriginalSize))
722 {
723 // Nothing to do for menubar, fonts are kept in wxMenus
724 }
725
726 bool wxMenuBar::SetFont(const wxFont& font)
727 {
728 m_font = font;
729 ChangeFont();
730
731 size_t menuCount = GetMenuCount();
732 for (size_t i = 0; i < menuCount; i++)
733 m_menus[i]->SetFont(font);
734
735 return TRUE;
736 }
737