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[wxWidgets.git] / src / common / event.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: event.cpp
3 // Purpose: Event classes
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 01/02/97
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // For compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #ifndef WX_PRECOMP
28 #include "wx/defs.h"
29 #include "wx/app.h"
30 #include "wx/list.h"
31
32 #if wxUSE_GUI
33 #include "wx/control.h"
34 #include "wx/utils.h"
35 #include "wx/dc.h"
36 #include "wx/textctrl.h"
37 #endif // wxUSE_GUI
38 #endif
39
40 #include "wx/event.h"
41 #include "wx/module.h"
42
43 #if wxUSE_GUI
44 #include "wx/validate.h"
45 #if wxUSE_STOPWATCH
46 #include "wx/stopwatch.h"
47 #endif
48 #endif // wxUSE_GUI
49
50 // ----------------------------------------------------------------------------
51 // wxWin macros
52 // ----------------------------------------------------------------------------
53
54 #if wxUSE_BASE
55 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
56 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
57 #endif // wxUSE_BASE
58
59 #if wxUSE_GUI
60 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
61 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
62 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
63 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
64 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
65 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
66 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
67 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
68 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
69 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
91 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
92 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
93 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
94 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
95 #endif // wxUSE_GUI
96
97 #if wxUSE_BASE
98
99 const wxEventTable *wxEvtHandler::GetEventTable() const
100 { return &wxEvtHandler::sm_eventTable; }
101
102 const wxEventTable wxEvtHandler::sm_eventTable =
103 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
104
105 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
106 { return wxEvtHandler::sm_eventHashTable; }
107
108 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
109
110 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
111 { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
112
113
114 #ifdef __WXDEBUG__
115 // Clear up event hash table contents or we can get problems
116 // when C++ is cleaning up the static object
117 class wxEventTableEntryModule: public wxModule
118 {
119 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
120 public:
121 wxEventTableEntryModule() {}
122 bool OnInit() { return true; }
123 void OnExit()
124 {
125 wxEventHashTable::ClearAll();
126 }
127 };
128 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
129 #endif
130
131 // ----------------------------------------------------------------------------
132 // global variables
133 // ----------------------------------------------------------------------------
134
135 // To put pending event handlers
136 wxList *wxPendingEvents = (wxList *)NULL;
137
138 #if wxUSE_THREADS
139 // protects wxPendingEvents list
140 wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
141 #endif
142
143 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
144
145 // common event types are defined here, other event types are defined by the
146 // components which use them
147
148 const wxEventType wxEVT_FIRST = 10000;
149 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
150
151 DEFINE_EVENT_TYPE(wxEVT_NULL)
152 DEFINE_EVENT_TYPE(wxEVT_IDLE)
153 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
154
155 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
156
157 #endif // wxUSE_BASE
158
159 #if wxUSE_GUI
160
161 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
162
163 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
164 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
165 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
166 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
167 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
168 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
169 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
177 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
178 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
179
180 // Sockets and timers send events, too
181 DEFINE_EVENT_TYPE(wxEVT_TIMER)
182
183 // Mouse event types
184 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
185 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
186 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
187 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
188 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
189 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
190 DEFINE_EVENT_TYPE(wxEVT_MOTION)
191 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
192 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
193 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
194 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
195 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
196 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
197 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
198 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
199 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
200
201 // Non-client mouse events
202 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
203 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
204 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
205 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
206 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
207 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
208 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
209 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
210 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
211 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
212 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
213 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
214
215 // Character input event type
216 DEFINE_EVENT_TYPE(wxEVT_CHAR)
217 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
218 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
219 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
220 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
221 #if wxUSE_HOTKEY
222 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
223 #endif
224
225 // Set cursor event
226 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
227
228 // wxScrollbar and wxSlider event identifiers
229 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
230 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
231 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
232 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
233 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
234 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
235 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
236 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
237 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
238
239 // Scroll events from wxWindow
240 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
241 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
242 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
243 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
244 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
245 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
246 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
247 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
248
249 // System events
250 DEFINE_EVENT_TYPE(wxEVT_SIZE)
251 DEFINE_EVENT_TYPE(wxEVT_SIZING)
252 DEFINE_EVENT_TYPE(wxEVT_MOVE)
253 DEFINE_EVENT_TYPE(wxEVT_MOVING)
254 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
255 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
256 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
257 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
258 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
259 DEFINE_EVENT_TYPE(wxEVT_POWER)
260 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
261 DEFINE_EVENT_TYPE(wxEVT_CREATE)
262 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
263 DEFINE_EVENT_TYPE(wxEVT_SHOW)
264 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
265 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
266 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
267 DEFINE_EVENT_TYPE(wxEVT_PAINT)
268 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
269 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
270 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
271 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
272 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
273 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
274 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
275 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
276 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
277 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
278 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
279 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
280 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
281 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
282 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
283 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
284 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
285 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
286 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
287 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
288 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
289 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
290
291 // Generic command events
292 // Note: a click is a higher-level event than button down/up
293 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
294 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
295 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
296 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
297 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
298 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
299 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
300
301 // Help events
302 DEFINE_EVENT_TYPE(wxEVT_HELP)
303 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
304
305 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
306
307 #endif // wxUSE_GUI
308
309 #if wxUSE_BASE
310
311 // ============================================================================
312 // implementation
313 // ============================================================================
314
315 // ----------------------------------------------------------------------------
316 // event initialization
317 // ----------------------------------------------------------------------------
318
319 int wxNewEventType()
320 {
321 // MT-FIXME
322 static int s_lastUsedEventType = wxEVT_FIRST;
323
324 return s_lastUsedEventType++;
325 }
326
327 // ----------------------------------------------------------------------------
328 // wxEvent
329 // ----------------------------------------------------------------------------
330
331 /*
332 * General wxWidgets events, covering
333 * all interesting things that might happen (button clicking, resizing,
334 * setting text in widgets, etc.).
335 *
336 * For each completely new event type, derive a new event class.
337 *
338 */
339
340 wxEvent::wxEvent(int theId, wxEventType commandType )
341 {
342 m_eventType = commandType;
343 m_eventObject = (wxObject *) NULL;
344 m_timeStamp = 0;
345 m_id = theId;
346 m_skipped = false;
347 m_callbackUserData = (wxObject *) NULL;
348 m_isCommandEvent = false;
349 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
350 }
351
352 wxEvent::wxEvent(const wxEvent &src)
353 : wxObject()
354 , m_eventObject(src.m_eventObject)
355 , m_eventType(src.m_eventType)
356 , m_timeStamp(src.m_timeStamp)
357 , m_id(src.m_id)
358 , m_callbackUserData(src.m_callbackUserData)
359 , m_propagationLevel(src.m_propagationLevel)
360 , m_skipped(src.m_skipped)
361 , m_isCommandEvent(src.m_isCommandEvent)
362 {
363 }
364
365 #endif // wxUSE_BASE
366
367 #if wxUSE_GUI
368
369 /*
370 * Command events
371 *
372 */
373
374 #ifdef __VISUALC__
375 // 'this' : used in base member initializer list (for m_commandString)
376 #pragma warning(disable:4355)
377 #endif
378
379 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
380 : wxEvent(theId, commandType)
381 #if WXWIN_COMPATIBILITY_2_4
382 , m_commandString(this)
383 #endif
384 {
385 m_clientData = (char *) NULL;
386 m_clientObject = (wxClientData *) NULL;
387 m_extraLong = 0;
388 m_commandInt = 0;
389 m_isCommandEvent = true;
390
391 // the command events are propagated upwards by default
392 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
393 }
394
395 #ifdef __VISUALC__
396 #pragma warning(default:4355)
397 #endif
398
399 wxString wxCommandEvent::GetString() const
400 {
401 if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
402 return m_cmdString;
403 else
404 {
405 #if wxUSE_TEXTCTRL
406 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
407 if(txt)
408 return txt->GetValue();
409 else
410 #endif // wxUSE_TEXTCTRL
411 return m_cmdString;
412 }
413 }
414
415 /*
416 * UI update events
417 */
418
419 #if wxUSE_LONGLONG
420 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
421 #endif
422
423 long wxUpdateUIEvent::sm_updateInterval = 0;
424
425 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
426
427 // Can we update?
428 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
429 {
430 // Don't update if we've switched global updating off
431 // and this window doesn't support updates.
432 if (win &&
433 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
434 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
435 return false;
436
437 if (sm_updateInterval == -1)
438 return false;
439
440 if (sm_updateInterval == 0)
441 return true;
442
443 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
444 wxLongLong now = wxGetLocalTimeMillis();
445 if (now > (sm_lastUpdate + sm_updateInterval))
446 {
447 return true;
448 }
449
450 return false;
451 #else
452 // If we don't have wxStopWatch or wxLongLong, we
453 // should err on the safe side and update now anyway.
454 return true;
455 #endif
456 }
457
458 // Reset the update time to provide a delay until the next
459 // time we should update
460 void wxUpdateUIEvent::ResetUpdateTime()
461 {
462 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
463 if (sm_updateInterval > 0)
464 {
465 wxLongLong now = wxGetLocalTimeMillis();
466 if (now > (sm_lastUpdate + sm_updateInterval))
467 {
468 sm_lastUpdate = now;
469 }
470 }
471 #endif
472 }
473
474 /*
475 * Idle events
476 */
477
478 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
479
480 // Can we send an idle event?
481 bool wxIdleEvent::CanSend(wxWindow* win)
482 {
483 // Don't update if we've switched global updating off
484 // and this window doesn't support updates.
485 if (win &&
486 (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
487 ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
488 return false;
489
490 return true;
491 }
492
493 /*
494 * Scroll events
495 */
496
497 wxScrollEvent::wxScrollEvent(wxEventType commandType,
498 int id,
499 int pos,
500 int orient)
501 : wxCommandEvent(commandType, id)
502 {
503 m_extraLong = orient;
504 m_commandInt = pos;
505 }
506
507 /*
508 * ScrollWin events
509 */
510
511 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
512 int pos,
513 int orient)
514 {
515 m_eventType = commandType;
516 m_extraLong = orient;
517 m_commandInt = pos;
518 }
519
520 /*
521 * Mouse events
522 *
523 */
524
525 wxMouseEvent::wxMouseEvent(wxEventType commandType)
526 {
527 m_eventType = commandType;
528 m_metaDown = false;
529 m_altDown = false;
530 m_controlDown = false;
531 m_shiftDown = false;
532 m_leftDown = false;
533 m_rightDown = false;
534 m_middleDown = false;
535 m_x = 0;
536 m_y = 0;
537 m_wheelRotation = 0;
538 m_wheelDelta = 0;
539 m_linesPerAction = 0;
540 }
541
542 void wxMouseEvent::Assign(const wxMouseEvent& event)
543 {
544 m_eventType = event.m_eventType;
545
546 m_x = event.m_x;
547 m_y = event.m_y;
548
549 m_leftDown = event.m_leftDown;
550 m_middleDown = event.m_middleDown;
551 m_rightDown = event.m_rightDown;
552
553 m_controlDown = event.m_controlDown;
554 m_shiftDown = event.m_shiftDown;
555 m_altDown = event.m_altDown;
556 m_metaDown = event.m_metaDown;
557
558 m_wheelRotation = event.m_wheelRotation;
559 m_wheelDelta = event.m_wheelDelta;
560 m_linesPerAction = event.m_linesPerAction;
561 }
562
563 // return true if was a button dclick event
564 bool wxMouseEvent::ButtonDClick(int but) const
565 {
566 switch (but)
567 {
568 default:
569 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
570 // fall through
571
572 case wxMOUSE_BTN_ANY:
573 return (LeftDClick() || MiddleDClick() || RightDClick());
574
575 case wxMOUSE_BTN_LEFT:
576 return LeftDClick();
577
578 case wxMOUSE_BTN_MIDDLE:
579 return MiddleDClick();
580
581 case wxMOUSE_BTN_RIGHT:
582 return RightDClick();
583 }
584 }
585
586 // return true if was a button down event
587 bool wxMouseEvent::ButtonDown(int but) const
588 {
589 switch (but)
590 {
591 default:
592 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
593 // fall through
594
595 case wxMOUSE_BTN_ANY:
596 return (LeftDown() || MiddleDown() || RightDown());
597
598 case wxMOUSE_BTN_LEFT:
599 return LeftDown();
600
601 case wxMOUSE_BTN_MIDDLE:
602 return MiddleDown();
603
604 case wxMOUSE_BTN_RIGHT:
605 return RightDown();
606 }
607 }
608
609 // return true if was a button up event
610 bool wxMouseEvent::ButtonUp(int but) const
611 {
612 switch (but)
613 {
614 default:
615 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
616 // fall through
617
618 case wxMOUSE_BTN_ANY:
619 return (LeftUp() || MiddleUp() || RightUp());
620
621 case wxMOUSE_BTN_LEFT:
622 return LeftUp();
623
624 case wxMOUSE_BTN_MIDDLE:
625 return MiddleUp();
626
627 case wxMOUSE_BTN_RIGHT:
628 return RightUp();
629 }
630 }
631
632 // return true if the given button is currently changing state
633 bool wxMouseEvent::Button(int but) const
634 {
635 switch (but)
636 {
637 default:
638 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
639 // fall through
640
641 case wxMOUSE_BTN_ANY:
642 return ButtonUp(wxMOUSE_BTN_ANY) ||
643 ButtonDown(wxMOUSE_BTN_ANY) ||
644 ButtonDClick(wxMOUSE_BTN_ANY);
645
646 case wxMOUSE_BTN_LEFT:
647 return LeftDown() || LeftUp() || LeftDClick();
648
649 case wxMOUSE_BTN_MIDDLE:
650 return MiddleDown() || MiddleUp() || MiddleDClick();
651
652 case wxMOUSE_BTN_RIGHT:
653 return RightDown() || RightUp() || RightDClick();
654 }
655 }
656
657 bool wxMouseEvent::ButtonIsDown(int but) const
658 {
659 switch (but)
660 {
661 default:
662 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
663 // fall through
664
665 case wxMOUSE_BTN_ANY:
666 return LeftIsDown() || MiddleIsDown() || RightIsDown();
667
668 case wxMOUSE_BTN_LEFT:
669 return LeftIsDown();
670
671 case wxMOUSE_BTN_MIDDLE:
672 return MiddleIsDown();
673
674 case wxMOUSE_BTN_RIGHT:
675 return RightIsDown();
676 }
677 }
678
679 int wxMouseEvent::GetButton() const
680 {
681 for ( int i = 1; i <= 3; i++ )
682 {
683 if ( Button(i) )
684 {
685 return i;
686 }
687 }
688
689 return wxMOUSE_BTN_NONE;
690 }
691
692 // Find the logical position of the event given the DC
693 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
694 {
695 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
696 return pt;
697 }
698
699
700 /*
701 * Keyboard event
702 *
703 */
704
705 wxKeyEvent::wxKeyEvent(wxEventType type)
706 {
707 m_eventType = type;
708 m_shiftDown = false;
709 m_controlDown = false;
710 m_metaDown = false;
711 m_altDown = false;
712 m_keyCode = 0;
713 m_scanCode = 0;
714 #if wxUSE_UNICODE
715 m_uniChar = 0;
716 #endif
717 }
718
719 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
720 : wxEvent(evt)
721 {
722 m_x = evt.m_x;
723 m_y = evt.m_y;
724
725 m_keyCode = evt.m_keyCode;
726
727 m_controlDown = evt.m_controlDown;
728 m_shiftDown = evt.m_shiftDown;
729 m_altDown = evt.m_altDown;
730 m_metaDown = evt.m_metaDown;
731 m_scanCode = evt.m_scanCode;
732 m_rawCode = evt.m_rawCode;
733 m_rawFlags = evt.m_rawFlags;
734
735 #if wxUSE_UNICODE
736 m_uniChar = evt.m_uniChar;
737 #endif
738 }
739
740 long wxKeyEvent::KeyCode() const
741 {
742 return m_keyCode;
743 }
744
745 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
746 {
747 SetEventType(wxEVT_CREATE);
748 SetEventObject(win);
749 }
750
751 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
752 {
753 SetEventType(wxEVT_DESTROY);
754 SetEventObject(win);
755 }
756
757 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
758 : wxCommandEvent(wxEVT_CHILD_FOCUS)
759 {
760 SetEventObject(win);
761 }
762
763 #endif // wxUSE_GUI
764
765
766 #if wxUSE_BASE
767
768 // ----------------------------------------------------------------------------
769 // wxEventHashTable
770 // ----------------------------------------------------------------------------
771
772 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
773
774 wxEventHashTable* wxEventHashTable::sm_first = NULL;
775
776 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
777 : m_table(table),
778 m_rebuildHash(true)
779 {
780 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
781
782 m_next = sm_first;
783 if (m_next)
784 m_next->m_previous = this;
785 sm_first = this;
786 }
787
788 wxEventHashTable::~wxEventHashTable()
789 {
790 if (m_next)
791 m_next->m_previous = m_previous;
792 if (m_previous)
793 m_previous->m_next = m_next;
794 if (sm_first == this)
795 sm_first = m_next;
796
797 Clear();
798 }
799
800 void wxEventHashTable::Clear()
801 {
802 size_t i;
803 for(i = 0; i < m_size; i++)
804 {
805 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
806 if (eTTnode)
807 {
808 delete eTTnode;
809 }
810 }
811
812 // Necessary in order to not invoke the
813 // overloaded delete operator when statics are cleaned up
814 if (m_eventTypeTable)
815 delete[] m_eventTypeTable;
816
817 m_eventTypeTable = NULL;
818 m_size = 0;
819 }
820
821 // Clear all tables
822 void wxEventHashTable::ClearAll()
823 {
824 wxEventHashTable* table = sm_first;
825 while (table)
826 {
827 table->Clear();
828 table = table->m_next;
829 }
830 }
831
832 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
833 {
834 if (m_rebuildHash)
835 {
836 InitHashTable();
837 m_rebuildHash = false;
838 }
839
840 if (!m_eventTypeTable)
841 return false;
842
843 // Find all entries for the given event type.
844 wxEventType eventType = event.GetEventType();
845 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
846 if (eTTnode && eTTnode->eventType == eventType)
847 {
848 // Now start the search for an event handler
849 // that can handle an event with the given ID.
850 const wxEventTableEntryPointerArray&
851 eventEntryTable = eTTnode->eventEntryTable;
852
853 const size_t count = eventEntryTable.GetCount();
854 for (size_t n = 0; n < count; n++)
855 {
856 if ( wxEvtHandler::
857 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
858 {
859 return true;
860 }
861 }
862 }
863
864 return false;
865 }
866
867 void wxEventHashTable::InitHashTable()
868 {
869 // Loop over the event tables and all its base tables.
870 const wxEventTable *table = &m_table;
871 while (table)
872 {
873 // Retrieve all valid event handler entries
874 const wxEventTableEntry *entry = table->entries;
875 while (entry->m_fn != 0)
876 {
877 // Add the event entry in the Hash.
878 AddEntry(*entry);
879
880 entry++;
881 }
882
883 table = table->baseTable;
884 }
885
886 // Lets free some memory.
887 size_t i;
888 for(i = 0; i < m_size; i++)
889 {
890 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
891 if (eTTnode)
892 {
893 eTTnode->eventEntryTable.Shrink();
894 }
895 }
896 }
897
898 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
899 {
900 // This might happen 'accidentally' as the app is exiting
901 if (!m_eventTypeTable)
902 return;
903
904 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
905 EventTypeTablePointer eTTnode = *peTTnode;
906
907 if (eTTnode)
908 {
909 if (eTTnode->eventType != entry.m_eventType)
910 {
911 // Resize the table!
912 GrowEventTypeTable();
913 // Try again to add it.
914 AddEntry(entry);
915 return;
916 }
917 }
918 else
919 {
920 eTTnode = new EventTypeTable;
921 eTTnode->eventType = entry.m_eventType;
922 *peTTnode = eTTnode;
923 }
924
925 // Fill all hash entries between entry.m_id and entry.m_lastId...
926 eTTnode->eventEntryTable.Add(&entry);
927 }
928
929 void wxEventHashTable::AllocEventTypeTable(size_t size)
930 {
931 m_eventTypeTable = new EventTypeTablePointer[size];
932 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
933 m_size = size;
934 }
935
936 void wxEventHashTable::GrowEventTypeTable()
937 {
938 size_t oldSize = m_size;
939 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
940
941 // TODO: Search the most optimal grow sequence
942 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
943
944 for ( size_t i = 0; i < oldSize; /* */ )
945 {
946 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
947 if (eTToldNode)
948 {
949 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
950 EventTypeTablePointer eTTnode = *peTTnode;
951
952 // Check for collision, we don't want any.
953 if (eTTnode)
954 {
955 GrowEventTypeTable();
956 continue; // Don't increment the counter,
957 // as we still need to add this element.
958 }
959 else
960 {
961 // Get the old value and put it in the new table.
962 *peTTnode = oldEventTypeTable[i];
963 }
964 }
965
966 i++;
967 }
968
969 delete[] oldEventTypeTable;
970 }
971
972
973 // ----------------------------------------------------------------------------
974 // wxEvtHandler
975 // ----------------------------------------------------------------------------
976
977 /*
978 * Event handler
979 */
980
981 wxEvtHandler::wxEvtHandler()
982 {
983 m_nextHandler = (wxEvtHandler *) NULL;
984 m_previousHandler = (wxEvtHandler *) NULL;
985 m_enabled = true;
986 m_dynamicEvents = (wxList *) NULL;
987 m_pendingEvents = (wxList *) NULL;
988 #if wxUSE_THREADS
989 # if !defined(__VISAGECPP__)
990 m_eventsLocker = new wxCriticalSection;
991 # endif
992 #endif
993 // no client data (yet)
994 m_clientData = NULL;
995 m_clientDataType = wxClientData_None;
996 }
997
998 wxEvtHandler::~wxEvtHandler()
999 {
1000 // Takes itself out of the list of handlers
1001 if (m_previousHandler)
1002 m_previousHandler->m_nextHandler = m_nextHandler;
1003
1004 if (m_nextHandler)
1005 m_nextHandler->m_previousHandler = m_previousHandler;
1006
1007 if (m_dynamicEvents)
1008 {
1009 wxList::iterator it = m_dynamicEvents->begin(),
1010 en = m_dynamicEvents->end();
1011 for (;it != en; ++it)
1012 {
1013 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1014 wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1015 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1016 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1017 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1018
1019 if (entry->m_callbackUserData)
1020 delete entry->m_callbackUserData;
1021 delete entry;
1022 }
1023 delete m_dynamicEvents;
1024 };
1025
1026 delete m_pendingEvents;
1027
1028 #if wxUSE_THREADS
1029 # if !defined(__VISAGECPP__)
1030 delete m_eventsLocker;
1031 # endif
1032
1033 // Remove us from wxPendingEvents if necessary.
1034 if(wxPendingEventsLocker)
1035 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1036 if ( wxPendingEvents )
1037 {
1038 // Delete all occurences of this from the list of pending events
1039 while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1040 }
1041 if(wxPendingEventsLocker)
1042 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1043 #endif
1044
1045 // we only delete object data, not untyped
1046 if ( m_clientDataType == wxClientData_Object )
1047 delete m_clientObject;
1048 }
1049
1050 #if wxUSE_THREADS
1051
1052 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1053 {
1054 // check that we are really in a child thread
1055 wxASSERT_MSG( !wxThread::IsMain(),
1056 wxT("use ProcessEvent() in main thread") );
1057
1058 AddPendingEvent(event);
1059
1060 return true;
1061 }
1062
1063 void wxEvtHandler::ClearEventLocker()
1064 {
1065 #if !defined(__VISAGECPP__)
1066 delete m_eventsLocker;
1067 m_eventsLocker = NULL;
1068 #endif
1069 }
1070
1071 #endif // wxUSE_THREADS
1072
1073 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1074 {
1075 // 1) Add event to list of pending events of this event handler
1076
1077 wxEvent *eventCopy = event.Clone();
1078
1079 // we must be able to copy the events here so the event class must
1080 // implement Clone() properly instead of just providing a NULL stab for it
1081 wxCHECK_RET( eventCopy,
1082 _T("events of this type aren't supposed to be posted") );
1083
1084 wxENTER_CRIT_SECT( Lock() );
1085
1086 if ( !m_pendingEvents )
1087 m_pendingEvents = new wxList;
1088
1089 m_pendingEvents->Append(eventCopy);
1090
1091 wxLEAVE_CRIT_SECT( Lock() );
1092
1093 // 2) Add this event handler to list of event handlers that
1094 // have pending events.
1095
1096 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1097
1098 if ( !wxPendingEvents )
1099 wxPendingEvents = new wxList;
1100 wxPendingEvents->Append(this);
1101
1102 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1103
1104 // 3) Inform the system that new pending events are somwehere,
1105 // and that these should be processed in idle time.
1106 wxWakeUpIdle();
1107 }
1108
1109 void wxEvtHandler::ProcessPendingEvents()
1110 {
1111 // this method is only called by wxApp if this handler does have pending
1112 // events
1113 wxCHECK_RET( m_pendingEvents,
1114 wxT("Please call wxApp::ProcessPendingEvents() instead") );
1115
1116 wxENTER_CRIT_SECT( Lock() );
1117
1118 // we leave the loop once we have processed all events that were present at
1119 // the start of ProcessPendingEvents because otherwise we could get into
1120 // infinite loop if the pending event handler execution resulted in another
1121 // event being posted
1122 size_t n = m_pendingEvents->size();
1123 for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1124 node;
1125 node = m_pendingEvents->GetFirst() )
1126 {
1127 wxEvent *event = (wxEvent *)node->GetData();
1128
1129 m_pendingEvents->Erase(node);
1130
1131 wxLEAVE_CRIT_SECT( Lock() );
1132
1133 ProcessEvent(*event);
1134 delete event;
1135
1136 wxENTER_CRIT_SECT( Lock() );
1137
1138 if ( !--n )
1139 break;
1140 }
1141
1142 wxLEAVE_CRIT_SECT( Lock() );
1143 }
1144
1145 /*
1146 * Event table stuff
1147 */
1148 /* static */ bool
1149 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1150 wxEvtHandler *handler,
1151 wxEvent& event)
1152 {
1153 int tableId1 = entry.m_id,
1154 tableId2 = entry.m_lastId;
1155
1156 // match only if the event type is the same and the id is either -1 in
1157 // the event table (meaning "any") or the event id matches the id
1158 // specified in the event table either exactly or by falling into
1159 // range between first and last
1160 if ((tableId1 == wxID_ANY) ||
1161 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1162 (tableId2 != wxID_ANY &&
1163 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1164 {
1165 event.Skip(false);
1166 event.m_callbackUserData = entry.m_callbackUserData;
1167
1168 #if wxUSE_EXCEPTIONS
1169 if ( wxTheApp )
1170 {
1171 // call the handler via wxApp method which allows the user to catch
1172 // any exceptions which may be thrown by any handler in the program
1173 // in one place
1174 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1175 }
1176 else
1177 #endif // wxUSE_EXCEPTIONS
1178 {
1179 // no need for an extra virtual function call
1180 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1181 }
1182
1183 if (!event.GetSkipped())
1184 return true;
1185 }
1186
1187 return false;
1188 }
1189
1190 bool wxEvtHandler::TryParent(wxEvent& event)
1191 {
1192 if ( wxTheApp && (this != wxTheApp) )
1193 {
1194 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1195 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1196 // processed appropriately via SearchEventTable.
1197 if ( event.GetEventType() != wxEVT_IDLE )
1198 {
1199 if ( wxTheApp->ProcessEvent(event) )
1200 return true;
1201 }
1202 }
1203
1204 return false;
1205 }
1206
1207 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1208 {
1209 // allow the application to hook into event processing
1210 if ( wxTheApp )
1211 {
1212 int rc = wxTheApp->FilterEvent(event);
1213 if ( rc != -1 )
1214 {
1215 wxASSERT_MSG( rc == 1 || rc == 0,
1216 _T("unexpected wxApp::FilterEvent return value") );
1217
1218 return rc != 0;
1219 }
1220 //else: proceed normally
1221 }
1222
1223 // An event handler can be enabled or disabled
1224 if ( GetEvtHandlerEnabled() )
1225 {
1226 // if we have a validator, it has higher priority than our own event
1227 // table
1228 if ( TryValidator(event) )
1229 return true;
1230
1231 // Handle per-instance dynamic event tables first
1232 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1233 return true;
1234
1235 // Then static per-class event tables
1236 if ( GetEventHashTable().HandleEvent(event, this) )
1237 return true;
1238 }
1239
1240 // Try going down the event handler chain
1241 if ( GetNextHandler() )
1242 {
1243 if ( GetNextHandler()->ProcessEvent(event) )
1244 return true;
1245 }
1246
1247 // Finally propagate the event upwards the window chain and/or to the
1248 // application object as necessary
1249 return TryParent(event);
1250 }
1251
1252
1253 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1254 {
1255 const wxEventType eventType = event.GetEventType();
1256 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1257 {
1258 const wxEventTableEntry& entry = table.entries[i];
1259 if ( eventType == entry.m_eventType )
1260 {
1261 if ( ProcessEventIfMatches(entry, this, event) )
1262 return true;
1263 }
1264 }
1265
1266 return false;
1267 }
1268
1269 void wxEvtHandler::Connect( int id, int lastId,
1270 int eventType,
1271 wxObjectEventFunction func,
1272 wxObject *userData,
1273 wxEvtHandler* eventSink )
1274 {
1275 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1276 wxEventTableEntry *entry = new wxEventTableEntry;
1277 entry->m_eventType = eventType;
1278 entry->m_id = id;
1279 entry->m_lastId = lastId;
1280 entry->m_fn = func;
1281 entry->m_callbackUserData = userData;
1282 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1283 wxDynamicEventTableEntry *entry =
1284 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1285 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1286
1287 if (!m_dynamicEvents)
1288 m_dynamicEvents = new wxList;
1289
1290 // Insert at the front of the list so most recent additions are found first
1291 m_dynamicEvents->Insert( (wxObject*) entry );
1292 }
1293
1294 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1295 wxObjectEventFunction func,
1296 wxObject *userData,
1297 wxEvtHandler* eventSink )
1298 {
1299 if (!m_dynamicEvents)
1300 return false;
1301
1302 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1303 while (node)
1304 {
1305 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1306 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1307 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1308 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1309 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1310
1311 if ((entry->m_id == id) &&
1312 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1313 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1314 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1315 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1316 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1317 {
1318 if (entry->m_callbackUserData)
1319 delete entry->m_callbackUserData;
1320 m_dynamicEvents->Erase( node );
1321 delete entry;
1322 return true;
1323 }
1324 node = node->GetNext();
1325 }
1326 return false;
1327 }
1328
1329 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1330 {
1331 wxCHECK_MSG( m_dynamicEvents, false,
1332 wxT("caller should check that we have dynamic events") );
1333
1334 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1335 while (node)
1336 {
1337 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1338 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1339 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1340 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1341 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1342
1343 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1344 {
1345 wxEvtHandler *handler =
1346 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1347 entry->m_eventSink ? entry->m_eventSink
1348 :
1349 #endif
1350 this;
1351
1352 if ( ProcessEventIfMatches(*entry, handler, event) )
1353 {
1354 return true;
1355 }
1356 }
1357
1358 node = node->GetNext();
1359 }
1360
1361 return false;
1362 }
1363
1364 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1365 {
1366 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1367 wxT("can't have both object and void client data") );
1368
1369 if ( m_clientObject )
1370 delete m_clientObject;
1371
1372 m_clientObject = data;
1373 m_clientDataType = wxClientData_Object;
1374 }
1375
1376 wxClientData *wxEvtHandler::DoGetClientObject() const
1377 {
1378 // it's not an error to call GetClientObject() on a window which doesn't
1379 // have client data at all - NULL will be returned
1380 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1381 wxT("this window doesn't have object client data") );
1382
1383 return m_clientObject;
1384 }
1385
1386 void wxEvtHandler::DoSetClientData( void *data )
1387 {
1388 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1389 wxT("can't have both object and void client data") );
1390
1391 m_clientData = data;
1392 m_clientDataType = wxClientData_Void;
1393 }
1394
1395 void *wxEvtHandler::DoGetClientData() const
1396 {
1397 // it's not an error to call GetClientData() on a window which doesn't have
1398 // client data at all - NULL will be returned
1399 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1400 wxT("this window doesn't have void client data") );
1401
1402 return m_clientData;
1403 }
1404
1405 #endif // wxUSE_BASE
1406
1407 #if wxUSE_GUI
1408
1409 // Find a window with the focus, that is also a descendant of the given window.
1410 // This is used to determine the window to initially send commands to.
1411 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1412 {
1413 // Process events starting with the window with the focus, if any.
1414 wxWindow* focusWin = wxWindow::FindFocus();
1415 wxWindow* win = focusWin;
1416
1417 // Check if this is a descendant of this frame.
1418 // If not, win will be set to NULL.
1419 while (win)
1420 {
1421 if (win == ancestor)
1422 break;
1423 else
1424 win = win->GetParent();
1425 }
1426 if (win == (wxWindow*) NULL)
1427 focusWin = (wxWindow*) NULL;
1428
1429 return focusWin;
1430 }
1431
1432 #endif // wxUSE_GUI
wxWidgets (Impactor)