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[wxWidgets.git] / src / common / event.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/common/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 #include "wx/event.h"
28
29 #ifndef WX_PRECOMP
30 #include "wx/list.h"
31 #include "wx/app.h"
32 #include "wx/utils.h"
33 #include "wx/stopwatch.h"
34 #include "wx/module.h"
35
36 #if wxUSE_GUI
37 #include "wx/control.h"
38 #include "wx/dc.h"
39 #include "wx/textctrl.h"
40 #include "wx/validate.h"
41 #endif // wxUSE_GUI
42 #endif
43
44 // ----------------------------------------------------------------------------
45 // wxWin macros
46 // ----------------------------------------------------------------------------
47
48 #if wxUSE_BASE
49 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
50 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
51 #endif // wxUSE_BASE
52
53 #if wxUSE_GUI
54 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
55 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
56 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
57 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
58 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
59 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
60 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
61 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
62 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
63 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
64 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
65 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
66 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
67 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
68 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
69 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
91 #endif // wxUSE_GUI
92
93 #if wxUSE_BASE
94
95 const wxEventTable *wxEvtHandler::GetEventTable() const
96 { return &wxEvtHandler::sm_eventTable; }
97
98 const wxEventTable wxEvtHandler::sm_eventTable =
99 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
100
101 wxEventHashTable &wxEvtHandler::GetEventHashTable() const
102 { return wxEvtHandler::sm_eventHashTable; }
103
104 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
105
106 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
107 { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
108
109
110 #ifdef __WXDEBUG__
111 // Clear up event hash table contents or we can get problems
112 // when C++ is cleaning up the static object
113 class wxEventTableEntryModule: public wxModule
114 {
115 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
116 public:
117 wxEventTableEntryModule() {}
118 bool OnInit() { return true; }
119 void OnExit()
120 {
121 wxEventHashTable::ClearAll();
122 }
123 };
124 IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
125 #endif
126
127 // ----------------------------------------------------------------------------
128 // global variables
129 // ----------------------------------------------------------------------------
130
131 // To put pending event handlers
132 wxList *wxPendingEvents = (wxList *)NULL;
133
134 #if wxUSE_THREADS
135 // protects wxPendingEvents list
136 wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
137 #endif
138
139 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
140
141 // common event types are defined here, other event types are defined by the
142 // components which use them
143
144 const wxEventType wxEVT_FIRST = 10000;
145 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
146
147 DEFINE_EVENT_TYPE(wxEVT_NULL)
148 DEFINE_EVENT_TYPE(wxEVT_IDLE)
149 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
150 DEFINE_EVENT_TYPE(wxEVT_TIMER)
151
152 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
153
154 #endif // wxUSE_BASE
155
156 #if wxUSE_GUI
157
158 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
159
160 DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
161 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
162 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
163 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
164 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
165 DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
166 DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
167 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
168 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
169 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
170 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
171 DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
172 DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
173 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
174 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
175 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
176 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
177
178 // Mouse event types
179 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
180 DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
181 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
182 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
183 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
184 DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
185 DEFINE_EVENT_TYPE(wxEVT_MOTION)
186 DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
187 DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
188 DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
189 DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
190 DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
191 DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
192 DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
193 DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
194 DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
195
196 // Non-client mouse events
197 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
198 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
199 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
200 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
201 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
202 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
203 DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
204 DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
205 DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
206 DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
207 DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
208 DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
209
210 // Character input event type
211 DEFINE_EVENT_TYPE(wxEVT_CHAR)
212 DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
213 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
214 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
215 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
216 #if wxUSE_HOTKEY
217 DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
218 #endif
219
220 // Set cursor event
221 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
222
223 // wxScrollbar and wxSlider event identifiers
224 DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
225 DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
226 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
227 DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
228 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
229 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
230 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
231 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
232 DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
233
234 // Scroll events from wxWindow
235 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
236 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
237 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
238 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
239 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
240 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
241 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
242 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
243
244 // System events
245 DEFINE_EVENT_TYPE(wxEVT_SIZE)
246 DEFINE_EVENT_TYPE(wxEVT_SIZING)
247 DEFINE_EVENT_TYPE(wxEVT_MOVE)
248 DEFINE_EVENT_TYPE(wxEVT_MOVING)
249 DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
250 DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
251 DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
252 DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
253 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
254 DEFINE_EVENT_TYPE(wxEVT_POWER)
255 DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
256 DEFINE_EVENT_TYPE(wxEVT_CREATE)
257 DEFINE_EVENT_TYPE(wxEVT_DESTROY)
258 DEFINE_EVENT_TYPE(wxEVT_SHOW)
259 DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
260 DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
261 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
262 DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
263 DEFINE_EVENT_TYPE(wxEVT_PAINT)
264 DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
265 DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
266 DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
267 DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
268 DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
269 DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
270 DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
271 DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
272 DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
273 DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
274 DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
275 DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
276 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
277 DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
278 DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
279 DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
280 DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
281 DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
282 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
283 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
284 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
285 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
286
287 // Clipboard events
288 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
289 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
290 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
291
292 // Generic command events
293 // Note: a click is a higher-level event than button down/up
294 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
295 DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
296 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
297 DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
298 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
299 DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
300 DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
301
302 // Help events
303 DEFINE_EVENT_TYPE(wxEVT_HELP)
304 DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
305
306 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
307
308 #endif // wxUSE_GUI
309
310 #if wxUSE_BASE
311
312 // ============================================================================
313 // implementation
314 // ============================================================================
315
316 // ----------------------------------------------------------------------------
317 // event initialization
318 // ----------------------------------------------------------------------------
319
320 int wxNewEventType()
321 {
322 // MT-FIXME
323 static int s_lastUsedEventType = wxEVT_FIRST;
324
325 return s_lastUsedEventType++;
326 }
327
328 // ----------------------------------------------------------------------------
329 // wxEvent
330 // ----------------------------------------------------------------------------
331
332 /*
333 * General wxWidgets events, covering
334 * all interesting things that might happen (button clicking, resizing,
335 * setting text in widgets, etc.).
336 *
337 * For each completely new event type, derive a new event class.
338 *
339 */
340
341 wxEvent::wxEvent(int theId, wxEventType commandType )
342 {
343 m_eventType = commandType;
344 m_eventObject = (wxObject *) NULL;
345 m_timeStamp = 0;
346 m_id = theId;
347 m_skipped = false;
348 m_callbackUserData = (wxObject *) NULL;
349 m_isCommandEvent = false;
350 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
351 }
352
353 wxEvent::wxEvent(const wxEvent &src)
354 : wxObject(src)
355 , m_eventObject(src.m_eventObject)
356 , m_eventType(src.m_eventType)
357 , m_timeStamp(src.m_timeStamp)
358 , m_id(src.m_id)
359 , m_callbackUserData(src.m_callbackUserData)
360 , m_propagationLevel(src.m_propagationLevel)
361 , m_skipped(src.m_skipped)
362 , m_isCommandEvent(src.m_isCommandEvent)
363 {
364 }
365
366 #endif // wxUSE_BASE
367
368 #if wxUSE_GUI
369
370 /*
371 * Command events
372 *
373 */
374
375 #ifdef __VISUALC__
376 // 'this' : used in base member initializer list (for m_commandString)
377 #pragma warning(disable:4355)
378 #endif
379
380 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
381 : wxEvent(theId, commandType)
382 {
383 m_clientData = (char *) NULL;
384 m_clientObject = (wxClientData *) NULL;
385 m_extraLong = 0;
386 m_commandInt = 0;
387 m_isCommandEvent = true;
388
389 // the command events are propagated upwards by default
390 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
391 }
392
393 #ifdef __VISUALC__
394 #pragma warning(default:4355)
395 #endif
396
397 wxString wxCommandEvent::GetString() const
398 {
399 if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
400 return m_cmdString;
401 else
402 {
403 #if wxUSE_TEXTCTRL
404 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
405 if(txt)
406 return txt->GetValue();
407 else
408 #endif // wxUSE_TEXTCTRL
409 return m_cmdString;
410 }
411 }
412
413 /*
414 * UI update events
415 */
416
417 #if wxUSE_LONGLONG
418 wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
419 #endif
420
421 long wxUpdateUIEvent::sm_updateInterval = 0;
422
423 wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
424
425 // Can we update?
426 bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
427 {
428 // Don't update if we've switched global updating off
429 // and this window doesn't support updates.
430 if (win &&
431 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
432 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
433 return false;
434
435 if (sm_updateInterval == -1)
436 return false;
437
438 if (sm_updateInterval == 0)
439 return true;
440
441 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
442 wxLongLong now = wxGetLocalTimeMillis();
443 if (now > (sm_lastUpdate + sm_updateInterval))
444 {
445 return true;
446 }
447
448 return false;
449 #else
450 // If we don't have wxStopWatch or wxLongLong, we
451 // should err on the safe side and update now anyway.
452 return true;
453 #endif
454 }
455
456 // Reset the update time to provide a delay until the next
457 // time we should update
458 void wxUpdateUIEvent::ResetUpdateTime()
459 {
460 #if wxUSE_STOPWATCH && wxUSE_LONGLONG
461 if (sm_updateInterval > 0)
462 {
463 wxLongLong now = wxGetLocalTimeMillis();
464 if (now > (sm_lastUpdate + sm_updateInterval))
465 {
466 sm_lastUpdate = now;
467 }
468 }
469 #endif
470 }
471
472 /*
473 * Idle events
474 */
475
476 wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
477
478 // Can we send an idle event?
479 bool wxIdleEvent::CanSend(wxWindow* win)
480 {
481 // Don't update if we've switched global updating off
482 // and this window doesn't support updates.
483 if (win &&
484 (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
485 ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
486 return false;
487
488 return true;
489 }
490
491 /*
492 * Scroll events
493 */
494
495 wxScrollEvent::wxScrollEvent(wxEventType commandType,
496 int id,
497 int pos,
498 int orient)
499 : wxCommandEvent(commandType, id)
500 {
501 m_extraLong = orient;
502 m_commandInt = pos;
503 }
504
505 /*
506 * ScrollWin events
507 */
508
509 wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
510 int pos,
511 int orient)
512 {
513 m_eventType = commandType;
514 m_extraLong = orient;
515 m_commandInt = pos;
516 }
517
518 /*
519 * Mouse events
520 *
521 */
522
523 wxMouseEvent::wxMouseEvent(wxEventType commandType)
524 {
525 m_eventType = commandType;
526 m_metaDown = false;
527 m_altDown = false;
528 m_controlDown = false;
529 m_shiftDown = false;
530 m_leftDown = false;
531 m_rightDown = false;
532 m_middleDown = false;
533 m_x = 0;
534 m_y = 0;
535 m_wheelRotation = 0;
536 m_wheelDelta = 0;
537 m_linesPerAction = 0;
538 m_wheelAxis = 0;
539 }
540
541 void wxMouseEvent::Assign(const wxMouseEvent& event)
542 {
543 m_eventType = event.m_eventType;
544
545 m_x = event.m_x;
546 m_y = event.m_y;
547
548 m_leftDown = event.m_leftDown;
549 m_middleDown = event.m_middleDown;
550 m_rightDown = event.m_rightDown;
551
552 m_controlDown = event.m_controlDown;
553 m_shiftDown = event.m_shiftDown;
554 m_altDown = event.m_altDown;
555 m_metaDown = event.m_metaDown;
556
557 m_wheelRotation = event.m_wheelRotation;
558 m_wheelDelta = event.m_wheelDelta;
559 m_linesPerAction = event.m_linesPerAction;
560 m_wheelAxis = event.m_wheelAxis;
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 #if WXWIN_COMPATIBILITY_2_6
741 long wxKeyEvent::KeyCode() const
742 {
743 return m_keyCode;
744 }
745 #endif // WXWIN_COMPATIBILITY_2_6
746
747 wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
748 {
749 SetEventType(wxEVT_CREATE);
750 SetEventObject(win);
751 }
752
753 wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
754 {
755 SetEventType(wxEVT_DESTROY);
756 SetEventObject(win);
757 }
758
759 wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
760 : wxCommandEvent(wxEVT_CHILD_FOCUS)
761 {
762 SetEventObject(win);
763 }
764
765 // ----------------------------------------------------------------------------
766 // wxHelpEvent
767 // ----------------------------------------------------------------------------
768
769 /* static */
770 wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
771 {
772 if ( origin == Origin_Unknown )
773 {
774 // assume that the event comes from the help button if it's not from
775 // keyboard and that pressing F1 always results in the help event
776 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
777 }
778
779 return origin;
780 }
781
782 #endif // wxUSE_GUI
783
784
785 #if wxUSE_BASE
786
787 // ----------------------------------------------------------------------------
788 // wxEventHashTable
789 // ----------------------------------------------------------------------------
790
791 static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
792
793 wxEventHashTable* wxEventHashTable::sm_first = NULL;
794
795 wxEventHashTable::wxEventHashTable(const wxEventTable &table)
796 : m_table(table),
797 m_rebuildHash(true)
798 {
799 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
800
801 m_next = sm_first;
802 if (m_next)
803 m_next->m_previous = this;
804 sm_first = this;
805 }
806
807 wxEventHashTable::~wxEventHashTable()
808 {
809 if (m_next)
810 m_next->m_previous = m_previous;
811 if (m_previous)
812 m_previous->m_next = m_next;
813 if (sm_first == this)
814 sm_first = m_next;
815
816 Clear();
817 }
818
819 void wxEventHashTable::Clear()
820 {
821 size_t i;
822 for(i = 0; i < m_size; i++)
823 {
824 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
825 if (eTTnode)
826 {
827 delete eTTnode;
828 }
829 }
830
831 // Necessary in order to not invoke the
832 // overloaded delete operator when statics are cleaned up
833 if (m_eventTypeTable)
834 delete[] m_eventTypeTable;
835
836 m_eventTypeTable = NULL;
837 m_size = 0;
838 }
839
840 // Clear all tables
841 void wxEventHashTable::ClearAll()
842 {
843 wxEventHashTable* table = sm_first;
844 while (table)
845 {
846 table->Clear();
847 table = table->m_next;
848 }
849 }
850
851 bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
852 {
853 if (m_rebuildHash)
854 {
855 InitHashTable();
856 m_rebuildHash = false;
857 }
858
859 if (!m_eventTypeTable)
860 return false;
861
862 // Find all entries for the given event type.
863 wxEventType eventType = event.GetEventType();
864 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
865 if (eTTnode && eTTnode->eventType == eventType)
866 {
867 // Now start the search for an event handler
868 // that can handle an event with the given ID.
869 const wxEventTableEntryPointerArray&
870 eventEntryTable = eTTnode->eventEntryTable;
871
872 const size_t count = eventEntryTable.GetCount();
873 for (size_t n = 0; n < count; n++)
874 {
875 if ( wxEvtHandler::
876 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
877 {
878 return true;
879 }
880 }
881 }
882
883 return false;
884 }
885
886 void wxEventHashTable::InitHashTable()
887 {
888 // Loop over the event tables and all its base tables.
889 const wxEventTable *table = &m_table;
890 while (table)
891 {
892 // Retrieve all valid event handler entries
893 const wxEventTableEntry *entry = table->entries;
894 while (entry->m_fn != 0)
895 {
896 // Add the event entry in the Hash.
897 AddEntry(*entry);
898
899 entry++;
900 }
901
902 table = table->baseTable;
903 }
904
905 // Lets free some memory.
906 size_t i;
907 for(i = 0; i < m_size; i++)
908 {
909 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
910 if (eTTnode)
911 {
912 eTTnode->eventEntryTable.Shrink();
913 }
914 }
915 }
916
917 void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
918 {
919 // This might happen 'accidentally' as the app is exiting
920 if (!m_eventTypeTable)
921 return;
922
923 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
924 EventTypeTablePointer eTTnode = *peTTnode;
925
926 if (eTTnode)
927 {
928 if (eTTnode->eventType != entry.m_eventType)
929 {
930 // Resize the table!
931 GrowEventTypeTable();
932 // Try again to add it.
933 AddEntry(entry);
934 return;
935 }
936 }
937 else
938 {
939 eTTnode = new EventTypeTable;
940 eTTnode->eventType = entry.m_eventType;
941 *peTTnode = eTTnode;
942 }
943
944 // Fill all hash entries between entry.m_id and entry.m_lastId...
945 eTTnode->eventEntryTable.Add(&entry);
946 }
947
948 void wxEventHashTable::AllocEventTypeTable(size_t size)
949 {
950 m_eventTypeTable = new EventTypeTablePointer[size];
951 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
952 m_size = size;
953 }
954
955 void wxEventHashTable::GrowEventTypeTable()
956 {
957 size_t oldSize = m_size;
958 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
959
960 // TODO: Search the most optimal grow sequence
961 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
962
963 for ( size_t i = 0; i < oldSize; /* */ )
964 {
965 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
966 if (eTToldNode)
967 {
968 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
969 EventTypeTablePointer eTTnode = *peTTnode;
970
971 // Check for collision, we don't want any.
972 if (eTTnode)
973 {
974 GrowEventTypeTable();
975 continue; // Don't increment the counter,
976 // as we still need to add this element.
977 }
978 else
979 {
980 // Get the old value and put it in the new table.
981 *peTTnode = oldEventTypeTable[i];
982 }
983 }
984
985 i++;
986 }
987
988 delete[] oldEventTypeTable;
989 }
990
991
992 // ----------------------------------------------------------------------------
993 // wxEvtHandler
994 // ----------------------------------------------------------------------------
995
996 /*
997 * Event handler
998 */
999
1000 wxEvtHandler::wxEvtHandler()
1001 {
1002 m_nextHandler = (wxEvtHandler *) NULL;
1003 m_previousHandler = (wxEvtHandler *) NULL;
1004 m_enabled = true;
1005 m_dynamicEvents = (wxList *) NULL;
1006 m_pendingEvents = (wxList *) NULL;
1007 #if wxUSE_THREADS
1008 # if !defined(__VISAGECPP__)
1009 m_eventsLocker = new wxCriticalSection;
1010 # endif
1011 #endif
1012
1013 // no client data (yet)
1014 m_clientData = NULL;
1015 m_clientDataType = wxClientData_None;
1016 }
1017
1018 wxEvtHandler::~wxEvtHandler()
1019 {
1020 // Takes itself out of the list of handlers
1021 if (m_previousHandler)
1022 m_previousHandler->m_nextHandler = m_nextHandler;
1023
1024 if (m_nextHandler)
1025 m_nextHandler->m_previousHandler = m_previousHandler;
1026
1027 if (m_dynamicEvents)
1028 {
1029 for ( wxList::iterator it = m_dynamicEvents->begin(),
1030 end = m_dynamicEvents->end();
1031 it != end;
1032 ++it )
1033 {
1034 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1035 wxEventTableEntry *entry = (wxEventTableEntry*)*it;
1036 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1037 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1038 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1039
1040 if (entry->m_callbackUserData)
1041 delete entry->m_callbackUserData;
1042 delete entry;
1043 }
1044 delete m_dynamicEvents;
1045 };
1046
1047 if (m_pendingEvents)
1048 m_pendingEvents->DeleteContents(true);
1049 delete m_pendingEvents;
1050
1051 #if wxUSE_THREADS
1052 # if !defined(__VISAGECPP__)
1053 delete m_eventsLocker;
1054 # endif
1055
1056 // Remove us from wxPendingEvents if necessary.
1057 if(wxPendingEventsLocker)
1058 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1059 if ( wxPendingEvents )
1060 {
1061 // Delete all occurences of this from the list of pending events
1062 while (wxPendingEvents->DeleteObject(this)) { } // Do nothing
1063 }
1064 if(wxPendingEventsLocker)
1065 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1066 #endif
1067
1068 // we only delete object data, not untyped
1069 if ( m_clientDataType == wxClientData_Object )
1070 delete m_clientObject;
1071 }
1072
1073 #if wxUSE_THREADS
1074
1075 bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
1076 {
1077 // check that we are really in a child thread
1078 wxASSERT_MSG( !wxThread::IsMain(),
1079 wxT("use ProcessEvent() in main thread") );
1080
1081 AddPendingEvent(event);
1082
1083 return true;
1084 }
1085
1086 void wxEvtHandler::ClearEventLocker()
1087 {
1088 #if !defined(__VISAGECPP__)
1089 delete m_eventsLocker;
1090 m_eventsLocker = NULL;
1091 #endif
1092 }
1093
1094 #endif // wxUSE_THREADS
1095
1096 void wxEvtHandler::AddPendingEvent(wxEvent& event)
1097 {
1098 // 1) Add event to list of pending events of this event handler
1099
1100 wxEvent *eventCopy = event.Clone();
1101
1102 // we must be able to copy the events here so the event class must
1103 // implement Clone() properly instead of just providing a NULL stab for it
1104 wxCHECK_RET( eventCopy,
1105 _T("events of this type aren't supposed to be posted") );
1106
1107 wxENTER_CRIT_SECT( Lock() );
1108
1109 if ( !m_pendingEvents )
1110 m_pendingEvents = new wxList;
1111
1112 m_pendingEvents->Append(eventCopy);
1113
1114 wxLEAVE_CRIT_SECT( Lock() );
1115
1116 // 2) Add this event handler to list of event handlers that
1117 // have pending events.
1118
1119 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1120
1121 if ( !wxPendingEvents )
1122 wxPendingEvents = new wxList;
1123 wxPendingEvents->Append(this);
1124
1125 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1126
1127 // 3) Inform the system that new pending events are somewhere,
1128 // and that these should be processed in idle time.
1129 wxWakeUpIdle();
1130 }
1131
1132 void wxEvtHandler::ProcessPendingEvents()
1133 {
1134 // this method is only called by wxApp if this handler does have
1135 // pending events
1136 wxCHECK_RET( m_pendingEvents,
1137 wxT("Please call wxApp::ProcessPendingEvents() instead") );
1138
1139 wxENTER_CRIT_SECT( Lock() );
1140
1141 // we leave the loop once we have processed all events that were present at
1142 // the start of ProcessPendingEvents because otherwise we could get into
1143 // infinite loop if the pending event handler execution resulted in another
1144 // event being posted
1145 size_t n = m_pendingEvents->size();
1146 for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1147 node;
1148 node = m_pendingEvents->GetFirst() )
1149 {
1150 wxEvent *event = (wxEvent *)node->GetData();
1151
1152 // It's importan we remove event from list before processing it.
1153 // Else a nested event loop, for example from a modal dialog, might
1154 // process the same event again.
1155
1156 m_pendingEvents->Erase(node);
1157
1158 wxLEAVE_CRIT_SECT( Lock() );
1159
1160 ProcessEvent(*event);
1161
1162 delete event;
1163
1164 wxENTER_CRIT_SECT( Lock() );
1165
1166 if ( --n == 0 )
1167 break;
1168 }
1169
1170 wxLEAVE_CRIT_SECT( Lock() );
1171 }
1172
1173 /*
1174 * Event table stuff
1175 */
1176 /* static */ bool
1177 wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1178 wxEvtHandler *handler,
1179 wxEvent& event)
1180 {
1181 int tableId1 = entry.m_id,
1182 tableId2 = entry.m_lastId;
1183
1184 // match only if the event type is the same and the id is either -1 in
1185 // the event table (meaning "any") or the event id matches the id
1186 // specified in the event table either exactly or by falling into
1187 // range between first and last
1188 if ((tableId1 == wxID_ANY) ||
1189 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1190 (tableId2 != wxID_ANY &&
1191 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1192 {
1193 event.Skip(false);
1194 event.m_callbackUserData = entry.m_callbackUserData;
1195
1196 #if wxUSE_EXCEPTIONS
1197 if ( wxTheApp )
1198 {
1199 // call the handler via wxApp method which allows the user to catch
1200 // any exceptions which may be thrown by any handler in the program
1201 // in one place
1202 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1203 }
1204 else
1205 #endif // wxUSE_EXCEPTIONS
1206 {
1207 // no need for an extra virtual function call
1208 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1209 }
1210
1211 if (!event.GetSkipped())
1212 return true;
1213 }
1214
1215 return false;
1216 }
1217
1218 bool wxEvtHandler::TryParent(wxEvent& event)
1219 {
1220 if ( wxTheApp && (this != wxTheApp) )
1221 {
1222 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1223 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1224 // processed appropriately via SearchEventTable.
1225 if ( event.GetEventType() != wxEVT_IDLE )
1226 {
1227 if ( wxTheApp->ProcessEvent(event) )
1228 return true;
1229 }
1230 }
1231
1232 return false;
1233 }
1234
1235 bool wxEvtHandler::ProcessEvent(wxEvent& event)
1236 {
1237 // allow the application to hook into event processing
1238 if ( wxTheApp )
1239 {
1240 int rc = wxTheApp->FilterEvent(event);
1241 if ( rc != -1 )
1242 {
1243 wxASSERT_MSG( rc == 1 || rc == 0,
1244 _T("unexpected wxApp::FilterEvent return value") );
1245
1246 return rc != 0;
1247 }
1248 //else: proceed normally
1249 }
1250
1251 // An event handler can be enabled or disabled
1252 if ( GetEvtHandlerEnabled() )
1253 {
1254 // if we have a validator, it has higher priority than our own event
1255 // table
1256 if ( TryValidator(event) )
1257 return true;
1258
1259 // Handle per-instance dynamic event tables first
1260 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1261 return true;
1262
1263 // Then static per-class event tables
1264 if ( GetEventHashTable().HandleEvent(event, this) )
1265 return true;
1266 }
1267
1268 // Try going down the event handler chain
1269 if ( GetNextHandler() )
1270 {
1271 if ( GetNextHandler()->ProcessEvent(event) )
1272 return true;
1273 }
1274
1275 // Finally propagate the event upwards the window chain and/or to the
1276 // application object as necessary
1277 return TryParent(event);
1278 }
1279
1280
1281 bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1282 {
1283 const wxEventType eventType = event.GetEventType();
1284 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1285 {
1286 const wxEventTableEntry& entry = table.entries[i];
1287 if ( eventType == entry.m_eventType )
1288 {
1289 if ( ProcessEventIfMatches(entry, this, event) )
1290 return true;
1291 }
1292 }
1293
1294 return false;
1295 }
1296
1297 void wxEvtHandler::Connect( int id, int lastId,
1298 int eventType,
1299 wxObjectEventFunction func,
1300 wxObject *userData,
1301 wxEvtHandler* eventSink )
1302 {
1303 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1304 wxEventTableEntry *entry = new wxEventTableEntry;
1305 entry->m_eventType = eventType;
1306 entry->m_id = id;
1307 entry->m_lastId = lastId;
1308 entry->m_fn = func;
1309 entry->m_callbackUserData = userData;
1310 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1311 wxDynamicEventTableEntry *entry =
1312 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1313 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1314
1315 if (!m_dynamicEvents)
1316 m_dynamicEvents = new wxList;
1317
1318 // Insert at the front of the list so most recent additions are found first
1319 m_dynamicEvents->Insert( (wxObject*) entry );
1320 }
1321
1322 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1323 wxObjectEventFunction func,
1324 wxObject *userData,
1325 wxEvtHandler* eventSink )
1326 {
1327 if (!m_dynamicEvents)
1328 return false;
1329
1330 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1331 while (node)
1332 {
1333 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1334 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1335 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1336 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1337 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1338
1339 if ((entry->m_id == id) &&
1340 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1341 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1342 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1343 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1344 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1345 {
1346 if (entry->m_callbackUserData)
1347 delete entry->m_callbackUserData;
1348 m_dynamicEvents->Erase( node );
1349 delete entry;
1350 return true;
1351 }
1352 node = node->GetNext();
1353 }
1354 return false;
1355 }
1356
1357 bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1358 {
1359 wxCHECK_MSG( m_dynamicEvents, false,
1360 wxT("caller should check that we have dynamic events") );
1361
1362 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1363 while (node)
1364 {
1365 #if WXWIN_COMPATIBILITY_EVENT_TYPES
1366 wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
1367 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
1368 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1369 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
1370
1371 // get next node before (maybe) calling the event handler as it could
1372 // call Disconnect() invalidating the current node
1373 node = node->GetNext();
1374
1375 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1376 {
1377 wxEvtHandler *handler =
1378 #if !WXWIN_COMPATIBILITY_EVENT_TYPES
1379 entry->m_eventSink ? entry->m_eventSink
1380 :
1381 #endif
1382 this;
1383
1384 if ( ProcessEventIfMatches(*entry, handler, event) )
1385 {
1386 return true;
1387 }
1388 }
1389 }
1390
1391 return false;
1392 }
1393
1394 void wxEvtHandler::DoSetClientObject( wxClientData *data )
1395 {
1396 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1397 wxT("can't have both object and void client data") );
1398
1399 if ( m_clientObject )
1400 delete m_clientObject;
1401
1402 m_clientObject = data;
1403 m_clientDataType = wxClientData_Object;
1404 }
1405
1406 wxClientData *wxEvtHandler::DoGetClientObject() const
1407 {
1408 // it's not an error to call GetClientObject() on a window which doesn't
1409 // have client data at all - NULL will be returned
1410 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1411 wxT("this window doesn't have object client data") );
1412
1413 return m_clientObject;
1414 }
1415
1416 void wxEvtHandler::DoSetClientData( void *data )
1417 {
1418 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1419 wxT("can't have both object and void client data") );
1420
1421 m_clientData = data;
1422 m_clientDataType = wxClientData_Void;
1423 }
1424
1425 void *wxEvtHandler::DoGetClientData() const
1426 {
1427 // it's not an error to call GetClientData() on a window which doesn't have
1428 // client data at all - NULL will be returned
1429 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1430 wxT("this window doesn't have void client data") );
1431
1432 return m_clientData;
1433 }
1434
1435 #endif // wxUSE_BASE
1436
1437 #if wxUSE_GUI
1438
1439 // Find a window with the focus, that is also a descendant of the given window.
1440 // This is used to determine the window to initially send commands to.
1441 wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1442 {
1443 // Process events starting with the window with the focus, if any.
1444 wxWindow* focusWin = wxWindow::FindFocus();
1445 wxWindow* win = focusWin;
1446
1447 // Check if this is a descendant of this frame.
1448 // If not, win will be set to NULL.
1449 while (win)
1450 {
1451 if (win == ancestor)
1452 break;
1453 else
1454 win = win->GetParent();
1455 }
1456 if (win == (wxWindow*) NULL)
1457 focusWin = (wxWindow*) NULL;
1458
1459 return focusWin;
1460 }
1461
1462 // ----------------------------------------------------------------------------
1463 // wxEventBlocker
1464 // ----------------------------------------------------------------------------
1465
1466 wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1467 {
1468 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1469
1470 m_window = win;
1471
1472 Block(type);
1473 m_window->PushEventHandler(this);
1474 }
1475
1476 wxEventBlocker::~wxEventBlocker()
1477 {
1478 wxEvtHandler *popped = m_window->PopEventHandler(false);
1479 wxCHECK_RET(popped == this,
1480 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1481 }
1482
1483 bool wxEventBlocker::ProcessEvent(wxEvent& event)
1484 {
1485 // should this event be blocked?
1486 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1487 {
1488 wxEventType t = (wxEventType)m_eventsToBlock[i];
1489 if ( t == wxEVT_ANY || t == event.GetEventType() )
1490 return true; // yes, it should: mark this event as processed
1491 }
1492
1493 return false;
1494 }
1495
1496 #endif // wxUSE_GUI
wxWidgets (Impactor)