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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 // see comments in wx/event.h, near wxEVT_SCROLL_ENDSCROLL declaration
240 #if wxCHECK_VERSION(2, 7, 0)
241 #error "Remove the lines below, not needed any more"
242 #endif
243 #undef wxEVT_SCROLL_ENDSCROLL
244 extern WXDLLIMPEXP_CORE const wxEventType wxEVT_SCROLL_ENDSCROLL;
245 const wxEventType wxEVT_SCROLL_ENDSCROLL = wxEVT_SCROLL_CHANGED;
246
247 // Scroll events from wxWindow
248 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
249 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
250 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
251 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
252 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
253 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
254 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
255 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
256
257 // System events
258 DEFINE_EVENT_TYPE(wxEVT_SIZE)
259 DEFINE_EVENT_TYPE(wxEVT_SIZING)
260 DEFINE_EVENT_TYPE(wxEVT_MOVE)
261 DEFINE_EVENT_TYPE(wxEVT_MOVING)
262 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
263 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
264 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
265 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
266 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
267 DEFINE_EVENT_TYPE(wxEVT_POWER)
268 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
269 DEFINE_EVENT_TYPE(wxEVT_CREATE)
270 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
271 DEFINE_EVENT_TYPE(wxEVT_SHOW)
272 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
273 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
274 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
275 DEFINE_EVENT_TYPE(wxEVT_PAINT)
276 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
277 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
278 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
279 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
280 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
281 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
282 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
283 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
284 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
285 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
286 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
287 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
288 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
289 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
290 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
291 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
292 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
293 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
294 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
295 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
296 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
297 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
298
299 // Generic command events
300 // Note: a click is a higher-level event than button down/up
301 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
302 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
303 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
304 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
305 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
306 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
307 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
308
309 // Help events
310 DEFINE_EVENT_TYPE(wxEVT_HELP)
311 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
312
313 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
314
315 #endif // wxUSE_GUI
316
317 #if wxUSE_BASE
318
319 // ============================================================================
320 // implementation
321 // ============================================================================
322
323 // ----------------------------------------------------------------------------
324 // event initialization
325 // ----------------------------------------------------------------------------
326
327 int wxNewEventType()
328 {
329 // MT-FIXME
330 static int s_lastUsedEventType = wxEVT_FIRST;
331
332 return s_lastUsedEventType++;
333 }
334
335 // ----------------------------------------------------------------------------
336 // wxEvent
337 // ----------------------------------------------------------------------------
338
339 /*
340 * General wxWidgets events, covering
341 * all interesting things that might happen (button clicking, resizing,
342 * setting text in widgets, etc.).
343 *
344 * For each completely new event type, derive a new event class.
345 *
346 */
347
348 wxEvent::wxEvent(int theId, wxEventType commandType )
349 {
350 m_eventType = commandType;
351 m_eventObject = (wxObject *) NULL;
352 m_timeStamp = 0;
353 m_id = theId;
354 m_skipped = false;
355 m_callbackUserData = (wxObject *) NULL;
356 m_isCommandEvent = false;
357 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
358 }
359
360 wxEvent::wxEvent(const wxEvent &src)
361 : wxObject()
362 , m_eventObject(src.m_eventObject)
363 , m_eventType(src.m_eventType)
364 , m_timeStamp(src.m_timeStamp)
365 , m_id(src.m_id)
366 , m_callbackUserData(src.m_callbackUserData)
367 , m_propagationLevel(src.m_propagationLevel)
368 , m_skipped(src.m_skipped)
369 , m_isCommandEvent(src.m_isCommandEvent)
370 {
371 }
372
373 #endif // wxUSE_BASE
374
375 #if wxUSE_GUI
376
377 /*
378 * Command events
379 *
380 */
381
382 #ifdef __VISUALC__
383 // 'this' : used in base member initializer list (for m_commandString)
384 #pragma warning(disable:4355)
385 #endif
386
387 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
388 : wxEvent(theId, commandType)
389 #if WXWIN_COMPATIBILITY_2_4
390 , m_commandString(this)
391 #endif
392 {
393 m_clientData = (char *) NULL;
394 m_clientObject = (wxClientData *) NULL;
395 m_extraLong = 0;
396 m_commandInt = 0;
397 m_isCommandEvent = true;
398
399 // the command events are propagated upwards by default
400 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
401 }
402
403 #ifdef __VISUALC__
404 #pragma warning(default:4355)
405 #endif
406
407 wxString wxCommandEvent::GetString() const
408 {
409 if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
410 return m_cmdString;
411 else
412 {
413 #if wxUSE_TEXTCTRL
414 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
415 if(txt)
416 return txt->GetValue();
417 else
418 #endif // wxUSE_TEXTCTRL
419 return m_cmdString;
420 }
421 }
422
423 /*
424 * UI update events
425 */
426
427 #if wxUSE_LONGLONG
428 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
429 #endif
430
431 long wxUpdateUIEvent::sm_updateInterval = 0;
432
433 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
434
435 // Can we update?
436 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
437 {
438 // Don't update if we've switched global updating off
439 // and this window doesn't support updates.
440 if (win &&
441 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
442 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
443 return false;
444
445 if (sm_updateInterval == -1)
446 return false;
447
448 if (sm_updateInterval == 0)
449 return true;
450
451 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
452 wxLongLong now = wxGetLocalTimeMillis();
453 if (now > (sm_lastUpdate + sm_updateInterval))
454 {
455 return true;
456 }
457
458 return false;
459 #else
460 // If we don't have wxStopWatch or wxLongLong, we
461 // should err on the safe side and update now anyway.
462 return true;
463 #endif
464 }
465
466 // Reset the update time to provide a delay until the next
467 // time we should update
468 void wxUpdateUIEvent::ResetUpdateTime()
469 {
470 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
471 if (sm_updateInterval > 0)
472 {
473 wxLongLong now = wxGetLocalTimeMillis();
474 if (now > (sm_lastUpdate + sm_updateInterval))
475 {
476 sm_lastUpdate = now;
477 }
478 }
479 #endif
480 }
481
482 /*
483 * Idle events
484 */
485
486 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
487
488 // Can we send an idle event?
489 bool wxIdleEvent::CanSend(wxWindow* win)
490 {
491 // Don't update if we've switched global updating off
492 // and this window doesn't support updates.
493 if (win &&
494 (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
495 ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
496 return false;
497
498 return true;
499 }
500
501 /*
502 * Scroll events
503 */
504
505 wxScrollEvent::wxScrollEvent(wxEventType commandType,
506 int id,
507 int pos,
508 int orient)
509 : wxCommandEvent(commandType, id)
510 {
511 m_extraLong = orient;
512 m_commandInt = pos;
513 }
514
515 /*
516 * ScrollWin events
517 */
518
519 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
520 int pos,
521 int orient)
522 {
523 m_eventType = commandType;
524 m_extraLong = orient;
525 m_commandInt = pos;
526 }
527
528 /*
529 * Mouse events
530 *
531 */
532
533 wxMouseEvent::wxMouseEvent(wxEventType commandType)
534 {
535 m_eventType = commandType;
536 m_metaDown = false;
537 m_altDown = false;
538 m_controlDown = false;
539 m_shiftDown = false;
540 m_leftDown = false;
541 m_rightDown = false;
542 m_middleDown = false;
543 m_x = 0;
544 m_y = 0;
545 m_wheelRotation = 0;
546 m_wheelDelta = 0;
547 m_linesPerAction = 0;
548 }
549
550 void wxMouseEvent::Assign(const wxMouseEvent& event)
551 {
552 m_eventType = event.m_eventType;
553
554 m_x = event.m_x;
555 m_y = event.m_y;
556
557 m_leftDown = event.m_leftDown;
558 m_middleDown = event.m_middleDown;
559 m_rightDown = event.m_rightDown;
560
561 m_controlDown = event.m_controlDown;
562 m_shiftDown = event.m_shiftDown;
563 m_altDown = event.m_altDown;
564 m_metaDown = event.m_metaDown;
565
566 m_wheelRotation = event.m_wheelRotation;
567 m_wheelDelta = event.m_wheelDelta;
568 m_linesPerAction = event.m_linesPerAction;
569 }
570
571 // return true if was a button dclick event
572 bool wxMouseEvent::ButtonDClick(int but) const
573 {
574 switch (but)
575 {
576 default:
577 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
578 // fall through
579
580 case wxMOUSE_BTN_ANY:
581 return (LeftDClick() || MiddleDClick() || RightDClick());
582
583 case wxMOUSE_BTN_LEFT:
584 return LeftDClick();
585
586 case wxMOUSE_BTN_MIDDLE:
587 return MiddleDClick();
588
589 case wxMOUSE_BTN_RIGHT:
590 return RightDClick();
591 }
592 }
593
594 // return true if was a button down event
595 bool wxMouseEvent::ButtonDown(int but) const
596 {
597 switch (but)
598 {
599 default:
600 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
601 // fall through
602
603 case wxMOUSE_BTN_ANY:
604 return (LeftDown() || MiddleDown() || RightDown());
605
606 case wxMOUSE_BTN_LEFT:
607 return LeftDown();
608
609 case wxMOUSE_BTN_MIDDLE:
610 return MiddleDown();
611
612 case wxMOUSE_BTN_RIGHT:
613 return RightDown();
614 }
615 }
616
617 // return true if was a button up event
618 bool wxMouseEvent::ButtonUp(int but) const
619 {
620 switch (but)
621 {
622 default:
623 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
624 // fall through
625
626 case wxMOUSE_BTN_ANY:
627 return (LeftUp() || MiddleUp() || RightUp());
628
629 case wxMOUSE_BTN_LEFT:
630 return LeftUp();
631
632 case wxMOUSE_BTN_MIDDLE:
633 return MiddleUp();
634
635 case wxMOUSE_BTN_RIGHT:
636 return RightUp();
637 }
638 }
639
640 // return true if the given button is currently changing state
641 bool wxMouseEvent::Button(int but) const
642 {
643 switch (but)
644 {
645 default:
646 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
647 // fall through
648
649 case wxMOUSE_BTN_ANY:
650 return ButtonUp(wxMOUSE_BTN_ANY) ||
651 ButtonDown(wxMOUSE_BTN_ANY) ||
652 ButtonDClick(wxMOUSE_BTN_ANY);
653
654 case wxMOUSE_BTN_LEFT:
655 return LeftDown() || LeftUp() || LeftDClick();
656
657 case wxMOUSE_BTN_MIDDLE:
658 return MiddleDown() || MiddleUp() || MiddleDClick();
659
660 case wxMOUSE_BTN_RIGHT:
661 return RightDown() || RightUp() || RightDClick();
662 }
663 }
664
665 bool wxMouseEvent::ButtonIsDown(int but) const
666 {
667 switch (but)
668 {
669 default:
670 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
671 // fall through
672
673 case wxMOUSE_BTN_ANY:
674 return LeftIsDown() || MiddleIsDown() || RightIsDown();
675
676 case wxMOUSE_BTN_LEFT:
677 return LeftIsDown();
678
679 case wxMOUSE_BTN_MIDDLE:
680 return MiddleIsDown();
681
682 case wxMOUSE_BTN_RIGHT:
683 return RightIsDown();
684 }
685 }
686
687 int wxMouseEvent::GetButton() const
688 {
689 for ( int i = 1; i <= 3; i++ )
690 {
691 if ( Button(i) )
692 {
693 return i;
694 }
695 }
696
697 return wxMOUSE_BTN_NONE;
698 }
699
700 // Find the logical position of the event given the DC
701 wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
702 {
703 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
704 return pt;
705 }
706
707
708 /*
709 * Keyboard event
710 *
711 */
712
713 wxKeyEvent::wxKeyEvent(wxEventType type)
714 {
715 m_eventType = type;
716 m_shiftDown = false;
717 m_controlDown = false;
718 m_metaDown = false;
719 m_altDown = false;
720 m_keyCode = 0;
721 m_scanCode = 0;
722 #if wxUSE_UNICODE
723 m_uniChar = 0;
724 #endif
725 }
726
727 wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
728 : wxEvent(evt)
729 {
730 m_x = evt.m_x;
731 m_y = evt.m_y;
732
733 m_keyCode = evt.m_keyCode;
734
735 m_controlDown = evt.m_controlDown;
736 m_shiftDown = evt.m_shiftDown;
737 m_altDown = evt.m_altDown;
738 m_metaDown = evt.m_metaDown;
739 m_scanCode = evt.m_scanCode;
740 m_rawCode = evt.m_rawCode;
741 m_rawFlags = evt.m_rawFlags;
742
743 #if wxUSE_UNICODE
744 m_uniChar = evt.m_uniChar;
745 #endif
746 }
747
748 long wxKeyEvent::KeyCode() const
749 {
750 return m_keyCode;
751 }
752
753 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
754 {
755 SetEventType(wxEVT_CREATE);
756 SetEventObject(win);
757 }
758
759 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
760 {
761 SetEventType(wxEVT_DESTROY);
762 SetEventObject(win);
763 }
764
765 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
766 : wxCommandEvent(wxEVT_CHILD_FOCUS)
767 {
768 SetEventObject(win);
769 }
770
771 #endif // wxUSE_GUI
772
773
774 #if wxUSE_BASE
775
776 // ----------------------------------------------------------------------------
777 // wxEventHashTable
778 // ----------------------------------------------------------------------------
779
780 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
781
782 wxEventHashTable* wxEventHashTable::sm_first = NULL;
783
784 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
785 : m_table(table),
786 m_rebuildHash(true)
787 {
788 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
789
790 m_next = sm_first;
791 if (m_next)
792 m_next->m_previous = this;
793 sm_first = this;
794 }
795
796 wxEventHashTable::~wxEventHashTable()
797 {
798 if (m_next)
799 m_next->m_previous = m_previous;
800 if (m_previous)
801 m_previous->m_next = m_next;
802 if (sm_first == this)
803 sm_first = m_next;
804
805 Clear();
806 }
807
808 void wxEventHashTable::Clear()
809 {
810 size_t i;
811 for(i = 0; i < m_size; i++)
812 {
813 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
814 if (eTTnode)
815 {
816 delete eTTnode;
817 }
818 }
819
820 // Necessary in order to not invoke the
821 // overloaded delete operator when statics are cleaned up
822 if (m_eventTypeTable)
823 delete[] m_eventTypeTable;
824
825 m_eventTypeTable = NULL;
826 m_size = 0;
827 }
828
829 // Clear all tables
830 void wxEventHashTable::ClearAll()
831 {
832 wxEventHashTable* table = sm_first;
833 while (table)
834 {
835 table->Clear();
836 table = table->m_next;
837 }
838 }
839
840 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
841 {
842 if (m_rebuildHash)
843 {
844 InitHashTable();
845 m_rebuildHash = false;
846 }
847
848 if (!m_eventTypeTable)
849 return false;
850
851 // Find all entries for the given event type.
852 wxEventType eventType = event.GetEventType();
853 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
854 if (eTTnode && eTTnode->eventType == eventType)
855 {
856 // Now start the search for an event handler
857 // that can handle an event with the given ID.
858 const wxEventTableEntryPointerArray&
859 eventEntryTable = eTTnode->eventEntryTable;
860
861 const size_t count = eventEntryTable.GetCount();
862 for (size_t n = 0; n < count; n++)
863 {
864 if ( wxEvtHandler::
865 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
866 {
867 return true;
868 }
869 }
870 }
871
872 return false;
873 }
874
875 void wxEventHashTable::InitHashTable()
876 {
877 // Loop over the event tables and all its base tables.
878 const wxEventTable *table = &m_table;
879 while (table)
880 {
881 // Retrieve all valid event handler entries
882 const wxEventTableEntry *entry = table->entries;
883 while (entry->m_fn != 0)
884 {
885 // Add the event entry in the Hash.
886 AddEntry(*entry);
887
888 entry++;
889 }
890
891 table = table->baseTable;
892 }
893
894 // Lets free some memory.
895 size_t i;
896 for(i = 0; i < m_size; i++)
897 {
898 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
899 if (eTTnode)
900 {
901 eTTnode->eventEntryTable.Shrink();
902 }
903 }
904 }
905
906 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
907 {
908 // This might happen 'accidentally' as the app is exiting
909 if (!m_eventTypeTable)
910 return;
911
912 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
913 EventTypeTablePointer eTTnode = *peTTnode;
914
915 if (eTTnode)
916 {
917 if (eTTnode->eventType != entry.m_eventType)
918 {
919 // Resize the table!
920 GrowEventTypeTable();
921 // Try again to add it.
922 AddEntry(entry);
923 return;
924 }
925 }
926 else
927 {
928 eTTnode = new EventTypeTable;
929 eTTnode->eventType = entry.m_eventType;
930 *peTTnode = eTTnode;
931 }
932
933 // Fill all hash entries between entry.m_id and entry.m_lastId...
934 eTTnode->eventEntryTable.Add(&entry);
935 }
936
937 void wxEventHashTable::AllocEventTypeTable(size_t size)
938 {
939 m_eventTypeTable = new EventTypeTablePointer[size];
940 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
941 m_size = size;
942 }
943
944 void wxEventHashTable::GrowEventTypeTable()
945 {
946 size_t oldSize = m_size;
947 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
948
949 // TODO: Search the most optimal grow sequence
950 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
951
952 for ( size_t i = 0; i < oldSize; /* */ )
953 {
954 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
955 if (eTToldNode)
956 {
957 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
958 EventTypeTablePointer eTTnode = *peTTnode;
959
960 // Check for collision, we don't want any.
961 if (eTTnode)
962 {
963 GrowEventTypeTable();
964 continue; // Don't increment the counter,
965 // as we still need to add this element.
966 }
967 else
968 {
969 // Get the old value and put it in the new table.
970 *peTTnode = oldEventTypeTable[i];
971 }
972 }
973
974 i++;
975 }
976
977 delete[] oldEventTypeTable;
978 }
979
980
981 // ----------------------------------------------------------------------------
982 // wxEvtHandler
983 // ----------------------------------------------------------------------------
984
985 /*
986 * Event handler
987 */
988
989 wxEvtHandler::wxEvtHandler()
990 {
991 m_nextHandler = (wxEvtHandler *) NULL;
992 m_previousHandler = (wxEvtHandler *) NULL;
993 m_enabled = true;
994 m_dynamicEvents = (wxList *) NULL;
995 m_pendingEvents = (wxList *) NULL;
996 #if wxUSE_THREADS
997 # if !defined(__VISAGECPP__)
998 m_eventsLocker = new wxCriticalSection;
999 # endif
1000 #endif
1001 // no client data (yet)
1002 m_clientData = NULL;
1003 m_clientDataType = wxClientData_None;
1004 }
1005
1006 wxEvtHandler::~wxEvtHandler()
1007 {
1008 // Takes itself out of the list of handlers
1009 if (m_previousHandler)
1010 m_previousHandler->m_nextHandler = m_nextHandler;
1011
1012 if (m_nextHandler)
1013 m_nextHandler->m_previousHandler = m_previousHandler;
1014
1015 if (m_dynamicEvents)
1016 {
1017 wxList::iterator it = m_dynamicEvents->begin(),
1018 en = m_dynamicEvents->end();
1019 for (;it != en; ++it)
1020 {
1021 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1022 wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1023 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1024 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1025 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1026
1027 if (entry->m_callbackUserData)
1028 delete entry->m_callbackUserData;
1029 delete entry;
1030 }
1031 delete m_dynamicEvents;
1032 };
1033
1034 delete m_pendingEvents;
1035
1036 #if wxUSE_THREADS
1037 # if !defined(__VISAGECPP__)
1038 delete m_eventsLocker;
1039 # endif
1040
1041 // Remove us from wxPendingEvents if necessary.
1042 if(wxPendingEventsLocker)
1043 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1044 if ( wxPendingEvents )
1045 {
1046 // Delete all occurences of this from the list of pending events
1047 while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1048 }
1049 if(wxPendingEventsLocker)
1050 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1051 #endif
1052
1053 // we only delete object data, not untyped
1054 if ( m_clientDataType == wxClientData_Object )
1055 delete m_clientObject;
1056 }
1057
1058 #if wxUSE_THREADS
1059
1060 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1061 {
1062 // check that we are really in a child thread
1063 wxASSERT_MSG( !wxThread::IsMain(),
1064 wxT("use ProcessEvent() in main thread") );
1065
1066 AddPendingEvent(event);
1067
1068 return true;
1069 }
1070
1071 void wxEvtHandler::ClearEventLocker()
1072 {
1073 #if !defined(__VISAGECPP__)
1074 delete m_eventsLocker;
1075 m_eventsLocker = NULL;
1076 #endif
1077 }
1078
1079 #endif // wxUSE_THREADS
1080
1081 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1082 {
1083 // 1) Add event to list of pending events of this event handler
1084
1085 wxEvent *eventCopy = event.Clone();
1086
1087 // we must be able to copy the events here so the event class must
1088 // implement Clone() properly instead of just providing a NULL stab for it
1089 wxCHECK_RET( eventCopy,
1090 _T("events of this type aren't supposed to be posted") );
1091
1092 wxENTER_CRIT_SECT( Lock() );
1093
1094 if ( !m_pendingEvents )
1095 m_pendingEvents = new wxList;
1096
1097 m_pendingEvents->Append(eventCopy);
1098
1099 wxLEAVE_CRIT_SECT( Lock() );
1100
1101 // 2) Add this event handler to list of event handlers that
1102 // have pending events.
1103
1104 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1105
1106 if ( !wxPendingEvents )
1107 wxPendingEvents = new wxList;
1108 wxPendingEvents->Append(this);
1109
1110 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1111
1112 // 3) Inform the system that new pending events are somwehere,
1113 // and that these should be processed in idle time.
1114 wxWakeUpIdle();
1115 }
1116
1117 void wxEvtHandler::ProcessPendingEvents()
1118 {
1119 // this method is only called by wxApp if this handler does have pending
1120 // events
1121 wxCHECK_RET( m_pendingEvents,
1122 wxT("Please call wxApp::ProcessPendingEvents() instead") );
1123
1124 wxENTER_CRIT_SECT( Lock() );
1125
1126 // we leave the loop once we have processed all events that were present at
1127 // the start of ProcessPendingEvents because otherwise we could get into
1128 // infinite loop if the pending event handler execution resulted in another
1129 // event being posted
1130 size_t n = m_pendingEvents->size();
1131 for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1132 node;
1133 node = m_pendingEvents->GetFirst() )
1134 {
1135 wxEvent *event = (wxEvent *)node->GetData();
1136
1137 m_pendingEvents->Erase(node);
1138
1139 wxLEAVE_CRIT_SECT( Lock() );
1140
1141 ProcessEvent(*event);
1142 delete event;
1143
1144 wxENTER_CRIT_SECT( Lock() );
1145
1146 if ( !--n )
1147 break;
1148 }
1149
1150 wxLEAVE_CRIT_SECT( Lock() );
1151 }
1152
1153 /*
1154 * Event table stuff
1155 */
1156 /* static */ bool
1157 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1158 wxEvtHandler *handler,
1159 wxEvent& event)
1160 {
1161 int tableId1 = entry.m_id,
1162 tableId2 = entry.m_lastId;
1163
1164 // match only if the event type is the same and the id is either -1 in
1165 // the event table (meaning "any") or the event id matches the id
1166 // specified in the event table either exactly or by falling into
1167 // range between first and last
1168 if ((tableId1 == wxID_ANY) ||
1169 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1170 (tableId2 != wxID_ANY &&
1171 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1172 {
1173 event.Skip(false);
1174 event.m_callbackUserData = entry.m_callbackUserData;
1175
1176 #if wxUSE_EXCEPTIONS
1177 if ( wxTheApp )
1178 {
1179 // call the handler via wxApp method which allows the user to catch
1180 // any exceptions which may be thrown by any handler in the program
1181 // in one place
1182 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1183 }
1184 else
1185 #endif // wxUSE_EXCEPTIONS
1186 {
1187 // no need for an extra virtual function call
1188 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1189 }
1190
1191 if (!event.GetSkipped())
1192 return true;
1193 }
1194
1195 return false;
1196 }
1197
1198 bool wxEvtHandler::TryParent(wxEvent& event)
1199 {
1200 if ( wxTheApp && (this != wxTheApp) )
1201 {
1202 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1203 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1204 // processed appropriately via SearchEventTable.
1205 if ( event.GetEventType() != wxEVT_IDLE )
1206 {
1207 if ( wxTheApp->ProcessEvent(event) )
1208 return true;
1209 }
1210 }
1211
1212 return false;
1213 }
1214
1215 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1216 {
1217 // allow the application to hook into event processing
1218 if ( wxTheApp )
1219 {
1220 int rc = wxTheApp->FilterEvent(event);
1221 if ( rc != -1 )
1222 {
1223 wxASSERT_MSG( rc == 1 || rc == 0,
1224 _T("unexpected wxApp::FilterEvent return value") );
1225
1226 return rc != 0;
1227 }
1228 //else: proceed normally
1229 }
1230
1231 // An event handler can be enabled or disabled
1232 if ( GetEvtHandlerEnabled() )
1233 {
1234 // if we have a validator, it has higher priority than our own event
1235 // table
1236 if ( TryValidator(event) )
1237 return true;
1238
1239 // Handle per-instance dynamic event tables first
1240 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1241 return true;
1242
1243 // Then static per-class event tables
1244 if ( GetEventHashTable().HandleEvent(event, this) )
1245 return true;
1246 }
1247
1248 // Try going down the event handler chain
1249 if ( GetNextHandler() )
1250 {
1251 if ( GetNextHandler()->ProcessEvent(event) )
1252 return true;
1253 }
1254
1255 // Finally propagate the event upwards the window chain and/or to the
1256 // application object as necessary
1257 return TryParent(event);
1258 }
1259
1260
1261 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1262 {
1263 const wxEventType eventType = event.GetEventType();
1264 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1265 {
1266 const wxEventTableEntry& entry = table.entries[i];
1267 if ( eventType == entry.m_eventType )
1268 {
1269 if ( ProcessEventIfMatches(entry, this, event) )
1270 return true;
1271 }
1272 }
1273
1274 return false;
1275 }
1276
1277 void wxEvtHandler::Connect( int id, int lastId,
1278 int eventType,
1279 wxObjectEventFunction func,
1280 wxObject *userData,
1281 wxEvtHandler* eventSink )
1282 {
1283 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1284 wxEventTableEntry *entry = new wxEventTableEntry;
1285 entry->m_eventType = eventType;
1286 entry->m_id = id;
1287 entry->m_lastId = lastId;
1288 entry->m_fn = func;
1289 entry->m_callbackUserData = userData;
1290 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1291 wxDynamicEventTableEntry *entry =
1292 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1293 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1294
1295 if (!m_dynamicEvents)
1296 m_dynamicEvents = new wxList;
1297
1298 // Insert at the front of the list so most recent additions are found first
1299 m_dynamicEvents->Insert( (wxObject*) entry );
1300 }
1301
1302 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1303 wxObjectEventFunction func,
1304 wxObject *userData,
1305 wxEvtHandler* eventSink )
1306 {
1307 if (!m_dynamicEvents)
1308 return false;
1309
1310 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1311 while (node)
1312 {
1313 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1314 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1315 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1316 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1317 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1318
1319 if ((entry->m_id == id) &&
1320 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1321 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1322 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1323 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1324 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1325 {
1326 if (entry->m_callbackUserData)
1327 delete entry->m_callbackUserData;
1328 m_dynamicEvents->Erase( node );
1329 delete entry;
1330 return true;
1331 }
1332 node = node->GetNext();
1333 }
1334 return false;
1335 }
1336
1337 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1338 {
1339 wxCHECK_MSG( m_dynamicEvents, false,
1340 wxT("caller should check that we have dynamic events") );
1341
1342 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1343 while (node)
1344 {
1345 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1346 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1347 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1348 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1349 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1350
1351 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1352 {
1353 wxEvtHandler *handler =
1354 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1355 entry->m_eventSink ? entry->m_eventSink
1356 :
1357 #endif
1358 this;
1359
1360 if ( ProcessEventIfMatches(*entry, handler, event) )
1361 {
1362 return true;
1363 }
1364 }
1365
1366 node = node->GetNext();
1367 }
1368
1369 return false;
1370 }
1371
1372 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1373 {
1374 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1375 wxT("can't have both object and void client data") );
1376
1377 if ( m_clientObject )
1378 delete m_clientObject;
1379
1380 m_clientObject = data;
1381 m_clientDataType = wxClientData_Object;
1382 }
1383
1384 wxClientData *wxEvtHandler::DoGetClientObject() const
1385 {
1386 // it's not an error to call GetClientObject() on a window which doesn't
1387 // have client data at all - NULL will be returned
1388 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1389 wxT("this window doesn't have object client data") );
1390
1391 return m_clientObject;
1392 }
1393
1394 void wxEvtHandler::DoSetClientData( void *data )
1395 {
1396 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1397 wxT("can't have both object and void client data") );
1398
1399 m_clientData = data;
1400 m_clientDataType = wxClientData_Void;
1401 }
1402
1403 void *wxEvtHandler::DoGetClientData() const
1404 {
1405 // it's not an error to call GetClientData() on a window which doesn't have
1406 // client data at all - NULL will be returned
1407 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1408 wxT("this window doesn't have void client data") );
1409
1410 return m_clientData;
1411 }
1412
1413 #endif // wxUSE_BASE
1414
1415 #if wxUSE_GUI
1416
1417 // Find a window with the focus, that is also a descendant of the given window.
1418 // This is used to determine the window to initially send commands to.
1419 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1420 {
1421 // Process events starting with the window with the focus, if any.
1422 wxWindow* focusWin = wxWindow::FindFocus();
1423 wxWindow* win = focusWin;
1424
1425 // Check if this is a descendant of this frame.
1426 // If not, win will be set to NULL.
1427 while (win)
1428 {
1429 if (win == ancestor)
1430 break;
1431 else
1432 win = win->GetParent();
1433 }
1434 if (win == (wxWindow*) NULL)
1435 focusWin = (wxWindow*) NULL;
1436
1437 return focusWin;
1438 }
1439
1440 #endif // wxUSE_GUI
wxWidgets (Impactor)