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Fix most of the Objective-C GC problems by using the stronger CFRetain/CFRelease...
[wxWidgets.git] / src / common / event.cpp
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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#include "wx/evtloop.h"
29
30#ifndef WX_PRECOMP
31 #include "wx/list.h"
32 #include "wx/app.h"
33 #include "wx/utils.h"
34 #include "wx/stopwatch.h"
35 #include "wx/module.h"
36
37 #if wxUSE_GUI
38 #include "wx/window.h"
39 #include "wx/control.h"
40 #include "wx/dc.h"
41 #include "wx/textctrl.h"
42 #include "wx/validate.h"
43 #endif // wxUSE_GUI
44#endif
45
46#include "wx/thread.h"
47
48#if wxUSE_BASE
49 #include "wx/ptr_scpd.h"
50
51 wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
52 wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
53#endif // wxUSE_BASE
54
55// ----------------------------------------------------------------------------
56// wxWin macros
57// ----------------------------------------------------------------------------
58
59#if wxUSE_BASE
60 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
61 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
62 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
63#endif // wxUSE_BASE
64
65#if wxUSE_GUI
66 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
67 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
68 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
69 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
91 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
92 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
93 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
94 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
95 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
96 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
97 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
98 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
99 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
100 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
101 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
102#endif // wxUSE_GUI
103
104#if wxUSE_BASE
105
106const wxEventTable *wxEvtHandler::GetEventTable() const
107 { return &wxEvtHandler::sm_eventTable; }
108
109const wxEventTable wxEvtHandler::sm_eventTable =
110 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
111
112wxEventHashTable &wxEvtHandler::GetEventHashTable() const
113 { return wxEvtHandler::sm_eventHashTable; }
114
115wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
116
117const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
118 { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
119
120
121// wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
122// leaked, so we need to manually clean up all event tables before checking for
123// the memory leaks when using it, however this breaks re-initializing the
124// library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
125// event tables won't be rebuilt the next time, so disable this by default
126#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
127
128class wxEventTableEntryModule: public wxModule
129{
130public:
131 wxEventTableEntryModule() { }
132 virtual bool OnInit() { return true; }
133 virtual void OnExit() { wxEventHashTable::ClearAll(); }
134
135 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
136};
137
138IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
139
140#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
141
142// ----------------------------------------------------------------------------
143// global variables
144// ----------------------------------------------------------------------------
145
146// List containing event handlers with pending events (each handler can occur
147// at most once here)
148wxList *wxPendingEvents = NULL;
149
150#if wxUSE_THREADS
151 // protects wxPendingEvents list
152 wxCriticalSection *wxPendingEventsLocker = NULL;
153#endif
154
155// common event types are defined here, other event types are defined by the
156// components which use them
157
158const wxEventType wxEVT_FIRST = 10000;
159const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
160
161DEFINE_EVENT_TYPE(wxEVT_NULL)
162DEFINE_EVENT_TYPE(wxEVT_IDLE)
163DEFINE_EVENT_TYPE(wxEVT_SOCKET)
164DEFINE_EVENT_TYPE(wxEVT_TIMER)
165
166#endif // wxUSE_BASE
167
168#if wxUSE_GUI
169
170DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
171DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
172DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
173DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
174DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
175DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
176DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
177DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
178DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
179DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
180DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
181DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
182DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
183DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
184DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
185DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
186DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
187
188// Mouse event types
189DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
190DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
191DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
192DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
193DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
194DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
195DEFINE_EVENT_TYPE(wxEVT_MOTION)
196DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
197DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
198DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
199DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
200DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
201DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
202DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
203DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
204DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
205DEFINE_EVENT_TYPE(wxEVT_AUX1_DOWN)
206DEFINE_EVENT_TYPE(wxEVT_AUX1_UP)
207DEFINE_EVENT_TYPE(wxEVT_AUX1_DCLICK)
208DEFINE_EVENT_TYPE(wxEVT_AUX2_DOWN)
209DEFINE_EVENT_TYPE(wxEVT_AUX2_UP)
210DEFINE_EVENT_TYPE(wxEVT_AUX2_DCLICK)
211
212// Non-client mouse events
213DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
214DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
215DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
216DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
217DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
218DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
219DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
220DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
221DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
222DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
223DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
224DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
225
226// Character input event type
227DEFINE_EVENT_TYPE(wxEVT_CHAR)
228DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
229DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
230DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
231DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
232#if wxUSE_HOTKEY
233DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
234#endif
235
236// Set cursor event
237DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
238
239// wxScrollbar and wxSlider event identifiers
240DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
241DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
242DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
243DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
244DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
245DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
246DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
247DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
248DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
249
250// Scroll events from wxWindow
251DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
252DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
253DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
254DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
255DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
256DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
257DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
258DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
259
260// System events
261DEFINE_EVENT_TYPE(wxEVT_SIZE)
262DEFINE_EVENT_TYPE(wxEVT_SIZING)
263DEFINE_EVENT_TYPE(wxEVT_MOVE)
264DEFINE_EVENT_TYPE(wxEVT_MOVING)
265DEFINE_EVENT_TYPE(wxEVT_MOVE_START)
266DEFINE_EVENT_TYPE(wxEVT_MOVE_END)
267DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
268DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
269DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
270DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
271DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
272DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
273DEFINE_EVENT_TYPE(wxEVT_CREATE)
274DEFINE_EVENT_TYPE(wxEVT_DESTROY)
275DEFINE_EVENT_TYPE(wxEVT_SHOW)
276DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
277DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
278DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
279DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
280DEFINE_EVENT_TYPE(wxEVT_PAINT)
281DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
282DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
283DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
284DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
285DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
286DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
287DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
288DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
289DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
290DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
291DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
292DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
293DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
294DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
295DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
296DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
297DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
298DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
299DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
300DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
301DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
302DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
303
304// Clipboard events
305DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
306DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
307DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
308
309// Generic command events
310// Note: a click is a higher-level event than button down/up
311DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
312DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
313DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
314DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
315DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
316DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
317DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
318
319// Help events
320DEFINE_EVENT_TYPE(wxEVT_HELP)
321DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
322
323#endif // wxUSE_GUI
324
325#if wxUSE_BASE
326
327wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
328
329// ============================================================================
330// implementation
331// ============================================================================
332
333// ----------------------------------------------------------------------------
334// event initialization
335// ----------------------------------------------------------------------------
336
337int wxNewEventType()
338{
339 // MT-FIXME
340 static int s_lastUsedEventType = wxEVT_FIRST;
341
342 return s_lastUsedEventType++;
343}
344
345// ----------------------------------------------------------------------------
346// wxEvent
347// ----------------------------------------------------------------------------
348
349/*
350 * General wxWidgets events, covering
351 * all interesting things that might happen (button clicking, resizing,
352 * setting text in widgets, etc.).
353 *
354 * For each completely new event type, derive a new event class.
355 *
356 */
357
358wxEvent::wxEvent(int theId, wxEventType commandType )
359{
360 m_eventType = commandType;
361 m_eventObject = (wxObject *) NULL;
362 m_timeStamp = 0;
363 m_id = theId;
364 m_skipped = false;
365 m_callbackUserData = (wxObject *) NULL;
366 m_isCommandEvent = false;
367 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
368}
369
370wxEvent::wxEvent(const wxEvent &src)
371 : wxObject(src)
372 , m_eventObject(src.m_eventObject)
373 , m_eventType(src.m_eventType)
374 , m_timeStamp(src.m_timeStamp)
375 , m_id(src.m_id)
376 , m_callbackUserData(src.m_callbackUserData)
377 , m_propagationLevel(src.m_propagationLevel)
378 , m_skipped(src.m_skipped)
379 , m_isCommandEvent(src.m_isCommandEvent)
380{
381}
382
383#endif // wxUSE_BASE
384
385#if wxUSE_GUI
386
387/*
388 * Command events
389 *
390 */
391
392#ifdef __VISUALC__
393 // 'this' : used in base member initializer list (for m_commandString)
394 #pragma warning(disable:4355)
395#endif
396
397wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
398 : wxEvent(theId, commandType)
399{
400 m_clientData = (char *) NULL;
401 m_clientObject = (wxClientData *) NULL;
402 m_extraLong = 0;
403 m_commandInt = 0;
404 m_isCommandEvent = true;
405
406 // the command events are propagated upwards by default
407 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
408}
409
410#ifdef __VISUALC__
411 #pragma warning(default:4355)
412#endif
413
414wxString wxCommandEvent::GetString() const
415{
416 if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
417 {
418 return m_cmdString;
419 }
420 else
421 {
422#if wxUSE_TEXTCTRL
423 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
424 if ( txt )
425 return txt->GetValue();
426 else
427#endif // wxUSE_TEXTCTRL
428 return m_cmdString;
429 }
430}
431
432/*
433 * UI update events
434 */
435
436#if wxUSE_LONGLONG
437wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
438#endif
439
440long wxUpdateUIEvent::sm_updateInterval = 0;
441
442wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
443
444// Can we update?
445bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
446{
447 // Don't update if we've switched global updating off
448 // and this window doesn't support updates.
449 if (win &&
450 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
451 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
452 return false;
453
454 if (sm_updateInterval == -1)
455 return false;
456
457 if (sm_updateInterval == 0)
458 return true;
459
460#if wxUSE_STOPWATCH && wxUSE_LONGLONG
461 wxLongLong now = wxGetLocalTimeMillis();
462 if (now > (sm_lastUpdate + sm_updateInterval))
463 {
464 return true;
465 }
466
467 return false;
468#else
469 // If we don't have wxStopWatch or wxLongLong, we
470 // should err on the safe side and update now anyway.
471 return true;
472#endif
473}
474
475// Reset the update time to provide a delay until the next
476// time we should update
477void wxUpdateUIEvent::ResetUpdateTime()
478{
479#if wxUSE_STOPWATCH && wxUSE_LONGLONG
480 if (sm_updateInterval > 0)
481 {
482 wxLongLong now = wxGetLocalTimeMillis();
483 if (now > (sm_lastUpdate + sm_updateInterval))
484 {
485 sm_lastUpdate = now;
486 }
487 }
488#endif
489}
490
491/*
492 * Scroll events
493 */
494
495wxScrollEvent::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
509wxScrollWinEvent::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
523wxMouseEvent::wxMouseEvent(wxEventType commandType)
524{
525 m_eventType = commandType;
526
527 m_x = 0;
528 m_y = 0;
529
530 m_leftDown = false;
531 m_middleDown = false;
532 m_rightDown = false;
533 m_aux1Down = false;
534 m_aux2Down = false;
535
536 m_controlDown = false;
537 m_shiftDown = false;
538 m_altDown = false;
539 m_metaDown = false;
540
541 m_clickCount = -1;
542
543 m_wheelRotation = 0;
544 m_wheelDelta = 0;
545 m_linesPerAction = 0;
546 m_wheelAxis = 0;
547}
548
549void wxMouseEvent::Assign(const wxMouseEvent& event)
550{
551 m_eventType = event.m_eventType;
552
553 m_x = event.m_x;
554 m_y = event.m_y;
555
556 m_leftDown = event.m_leftDown;
557 m_middleDown = event.m_middleDown;
558 m_rightDown = event.m_rightDown;
559 m_aux1Down = event.m_aux1Down;
560 m_aux2Down = event.m_aux2Down;
561
562 m_controlDown = event.m_controlDown;
563 m_shiftDown = event.m_shiftDown;
564 m_altDown = event.m_altDown;
565 m_metaDown = event.m_metaDown;
566
567 m_wheelRotation = event.m_wheelRotation;
568 m_wheelDelta = event.m_wheelDelta;
569 m_linesPerAction = event.m_linesPerAction;
570 m_wheelAxis = event.m_wheelAxis;
571}
572
573// return true if was a button dclick event
574bool wxMouseEvent::ButtonDClick(int but) const
575{
576 switch (but)
577 {
578 default:
579 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
580 // fall through
581
582 case wxMOUSE_BTN_ANY:
583 return (LeftDClick() || MiddleDClick() || RightDClick() ||
584 Aux1DClick() || Aux2DClick());
585
586 case wxMOUSE_BTN_LEFT:
587 return LeftDClick();
588
589 case wxMOUSE_BTN_MIDDLE:
590 return MiddleDClick();
591
592 case wxMOUSE_BTN_RIGHT:
593 return RightDClick();
594
595 case wxMOUSE_BTN_AUX1:
596 return Aux1DClick();
597
598 case wxMOUSE_BTN_AUX2:
599 return Aux2DClick();
600 }
601}
602
603// return true if was a button down event
604bool wxMouseEvent::ButtonDown(int but) const
605{
606 switch (but)
607 {
608 default:
609 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
610 // fall through
611
612 case wxMOUSE_BTN_ANY:
613 return (LeftDown() || MiddleDown() || RightDown() ||
614 Aux1Down() || Aux2Down());
615
616 case wxMOUSE_BTN_LEFT:
617 return LeftDown();
618
619 case wxMOUSE_BTN_MIDDLE:
620 return MiddleDown();
621
622 case wxMOUSE_BTN_RIGHT:
623 return RightDown();
624
625 case wxMOUSE_BTN_AUX1:
626 return Aux1Down();
627
628 case wxMOUSE_BTN_AUX2:
629 return Aux2Down();
630 }
631}
632
633// return true if was a button up event
634bool wxMouseEvent::ButtonUp(int but) const
635{
636 switch (but)
637 {
638 default:
639 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
640 // fall through
641
642 case wxMOUSE_BTN_ANY:
643 return (LeftUp() || MiddleUp() || RightUp() ||
644 Aux1Up() || Aux2Up());
645
646 case wxMOUSE_BTN_LEFT:
647 return LeftUp();
648
649 case wxMOUSE_BTN_MIDDLE:
650 return MiddleUp();
651
652 case wxMOUSE_BTN_RIGHT:
653 return RightUp();
654
655 case wxMOUSE_BTN_AUX1:
656 return Aux1Up();
657
658 case wxMOUSE_BTN_AUX2:
659 return Aux2Up();
660 }
661}
662
663// return true if the given button is currently changing state
664bool wxMouseEvent::Button(int but) const
665{
666 switch (but)
667 {
668 default:
669 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
670 // fall through
671
672 case wxMOUSE_BTN_ANY:
673 return ButtonUp(wxMOUSE_BTN_ANY) ||
674 ButtonDown(wxMOUSE_BTN_ANY) ||
675 ButtonDClick(wxMOUSE_BTN_ANY);
676
677 case wxMOUSE_BTN_LEFT:
678 return LeftDown() || LeftUp() || LeftDClick();
679
680 case wxMOUSE_BTN_MIDDLE:
681 return MiddleDown() || MiddleUp() || MiddleDClick();
682
683 case wxMOUSE_BTN_RIGHT:
684 return RightDown() || RightUp() || RightDClick();
685
686 case wxMOUSE_BTN_AUX1:
687 return Aux1Down() || Aux1Up() || Aux1DClick();
688
689 case wxMOUSE_BTN_AUX2:
690 return Aux2Down() || Aux2Up() || Aux2DClick();
691 }
692}
693
694bool wxMouseEvent::ButtonIsDown(int but) const
695{
696 switch (but)
697 {
698 default:
699 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
700 // fall through
701
702 case wxMOUSE_BTN_ANY:
703 return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down();
704
705 case wxMOUSE_BTN_LEFT:
706 return LeftIsDown();
707
708 case wxMOUSE_BTN_MIDDLE:
709 return MiddleIsDown();
710
711 case wxMOUSE_BTN_RIGHT:
712 return RightIsDown();
713
714 case wxMOUSE_BTN_AUX1:
715 return Aux1IsDown();
716
717 case wxMOUSE_BTN_AUX2:
718 return Aux2IsDown();
719 }
720}
721
722int wxMouseEvent::GetButton() const
723{
724 for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
725 {
726 if ( Button(i) )
727 {
728 return i;
729 }
730 }
731
732 return wxMOUSE_BTN_NONE;
733}
734
735// Find the logical position of the event given the DC
736wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
737{
738 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
739 return pt;
740}
741
742
743/*
744 * Keyboard event
745 *
746 */
747
748wxKeyEvent::wxKeyEvent(wxEventType type)
749{
750 m_eventType = type;
751 m_shiftDown = false;
752 m_controlDown = false;
753 m_metaDown = false;
754 m_altDown = false;
755 m_keyCode = 0;
756 m_scanCode = 0;
757#if wxUSE_UNICODE
758 m_uniChar = 0;
759#endif
760}
761
762wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
763 : wxEvent(evt)
764{
765 m_x = evt.m_x;
766 m_y = evt.m_y;
767
768 m_keyCode = evt.m_keyCode;
769
770 m_controlDown = evt.m_controlDown;
771 m_shiftDown = evt.m_shiftDown;
772 m_altDown = evt.m_altDown;
773 m_metaDown = evt.m_metaDown;
774 m_scanCode = evt.m_scanCode;
775 m_rawCode = evt.m_rawCode;
776 m_rawFlags = evt.m_rawFlags;
777
778#if wxUSE_UNICODE
779 m_uniChar = evt.m_uniChar;
780#endif
781}
782
783wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
784{
785 SetEventType(wxEVT_CREATE);
786 SetEventObject(win);
787}
788
789wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
790{
791 SetEventType(wxEVT_DESTROY);
792 SetEventObject(win);
793}
794
795wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
796 : wxCommandEvent(wxEVT_CHILD_FOCUS)
797{
798 SetEventObject(win);
799}
800
801// ----------------------------------------------------------------------------
802// wxHelpEvent
803// ----------------------------------------------------------------------------
804
805/* static */
806wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
807{
808 if ( origin == Origin_Unknown )
809 {
810 // assume that the event comes from the help button if it's not from
811 // keyboard and that pressing F1 always results in the help event
812 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
813 }
814
815 return origin;
816}
817
818#endif // wxUSE_GUI
819
820
821#if wxUSE_BASE
822
823// ----------------------------------------------------------------------------
824// wxEventHashTable
825// ----------------------------------------------------------------------------
826
827static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
828
829wxEventHashTable* wxEventHashTable::sm_first = NULL;
830
831wxEventHashTable::wxEventHashTable(const wxEventTable &table)
832 : m_table(table),
833 m_rebuildHash(true)
834{
835 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
836
837 m_next = sm_first;
838 if (m_next)
839 m_next->m_previous = this;
840 sm_first = this;
841}
842
843wxEventHashTable::~wxEventHashTable()
844{
845 if (m_next)
846 m_next->m_previous = m_previous;
847 if (m_previous)
848 m_previous->m_next = m_next;
849 if (sm_first == this)
850 sm_first = m_next;
851
852 Clear();
853}
854
855void wxEventHashTable::Clear()
856{
857 for ( size_t i = 0; i < m_size; i++ )
858 {
859 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
860 delete eTTnode;
861 }
862
863 delete[] m_eventTypeTable;
864 m_eventTypeTable = NULL;
865
866 m_size = 0;
867}
868
869#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
870
871// Clear all tables
872void wxEventHashTable::ClearAll()
873{
874 wxEventHashTable* table = sm_first;
875 while (table)
876 {
877 table->Clear();
878 table = table->m_next;
879 }
880}
881
882#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
883
884bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
885{
886 if (m_rebuildHash)
887 {
888 InitHashTable();
889 m_rebuildHash = false;
890 }
891
892 if (!m_eventTypeTable)
893 return false;
894
895 // Find all entries for the given event type.
896 wxEventType eventType = event.GetEventType();
897 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
898 if (eTTnode && eTTnode->eventType == eventType)
899 {
900 // Now start the search for an event handler
901 // that can handle an event with the given ID.
902 const wxEventTableEntryPointerArray&
903 eventEntryTable = eTTnode->eventEntryTable;
904
905 const size_t count = eventEntryTable.GetCount();
906 for (size_t n = 0; n < count; n++)
907 {
908 if ( wxEvtHandler::
909 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
910 {
911 return true;
912 }
913 }
914 }
915
916 return false;
917}
918
919void wxEventHashTable::InitHashTable()
920{
921 // Loop over the event tables and all its base tables.
922 const wxEventTable *table = &m_table;
923 while (table)
924 {
925 // Retrieve all valid event handler entries
926 const wxEventTableEntry *entry = table->entries;
927 while (entry->m_fn != 0)
928 {
929 // Add the event entry in the Hash.
930 AddEntry(*entry);
931
932 entry++;
933 }
934
935 table = table->baseTable;
936 }
937
938 // Lets free some memory.
939 size_t i;
940 for(i = 0; i < m_size; i++)
941 {
942 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
943 if (eTTnode)
944 {
945 eTTnode->eventEntryTable.Shrink();
946 }
947 }
948}
949
950void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
951{
952 // This might happen 'accidentally' as the app is exiting
953 if (!m_eventTypeTable)
954 return;
955
956 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
957 EventTypeTablePointer eTTnode = *peTTnode;
958
959 if (eTTnode)
960 {
961 if (eTTnode->eventType != entry.m_eventType)
962 {
963 // Resize the table!
964 GrowEventTypeTable();
965 // Try again to add it.
966 AddEntry(entry);
967 return;
968 }
969 }
970 else
971 {
972 eTTnode = new EventTypeTable;
973 eTTnode->eventType = entry.m_eventType;
974 *peTTnode = eTTnode;
975 }
976
977 // Fill all hash entries between entry.m_id and entry.m_lastId...
978 eTTnode->eventEntryTable.Add(&entry);
979}
980
981void wxEventHashTable::AllocEventTypeTable(size_t size)
982{
983 m_eventTypeTable = new EventTypeTablePointer[size];
984 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
985 m_size = size;
986}
987
988void wxEventHashTable::GrowEventTypeTable()
989{
990 size_t oldSize = m_size;
991 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
992
993 // TODO: Search the most optimal grow sequence
994 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
995
996 for ( size_t i = 0; i < oldSize; /* */ )
997 {
998 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
999 if (eTToldNode)
1000 {
1001 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1002 EventTypeTablePointer eTTnode = *peTTnode;
1003
1004 // Check for collision, we don't want any.
1005 if (eTTnode)
1006 {
1007 GrowEventTypeTable();
1008 continue; // Don't increment the counter,
1009 // as we still need to add this element.
1010 }
1011 else
1012 {
1013 // Get the old value and put it in the new table.
1014 *peTTnode = oldEventTypeTable[i];
1015 }
1016 }
1017
1018 i++;
1019 }
1020
1021 delete[] oldEventTypeTable;
1022}
1023
1024// ----------------------------------------------------------------------------
1025// wxEvtHandler
1026// ----------------------------------------------------------------------------
1027
1028/*
1029 * Event handler
1030 */
1031
1032wxEvtHandler::wxEvtHandler()
1033{
1034 m_nextHandler = (wxEvtHandler *) NULL;
1035 m_previousHandler = (wxEvtHandler *) NULL;
1036 m_enabled = true;
1037 m_dynamicEvents = (wxList *) NULL;
1038 m_pendingEvents = (wxList *) NULL;
1039
1040 // no client data (yet)
1041 m_clientData = NULL;
1042 m_clientDataType = wxClientData_None;
1043}
1044
1045wxEvtHandler::~wxEvtHandler()
1046{
1047 // Takes itself out of the list of handlers
1048 if (m_previousHandler)
1049 m_previousHandler->m_nextHandler = m_nextHandler;
1050
1051 if (m_nextHandler)
1052 m_nextHandler->m_previousHandler = m_previousHandler;
1053
1054 if (m_dynamicEvents)
1055 {
1056 for ( wxList::iterator it = m_dynamicEvents->begin(),
1057 end = m_dynamicEvents->end();
1058 it != end;
1059 ++it )
1060 {
1061 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1062
1063 // Remove ourselves from sink destructor notifications
1064 // (this has usually been been done, in wxTrackable destructor)
1065 wxEvtHandler *eventSink = entry->m_eventSink;
1066 if ( eventSink )
1067 {
1068 wxEventConnectionRef * const
1069 evtConnRef = FindRefInTrackerList(eventSink);
1070 if ( evtConnRef )
1071 {
1072 eventSink->RemoveNode(evtConnRef);
1073 delete evtConnRef;
1074 }
1075 }
1076
1077 if (entry->m_callbackUserData)
1078 delete entry->m_callbackUserData;
1079 delete entry;
1080 }
1081 delete m_dynamicEvents;
1082 };
1083
1084 if (m_pendingEvents)
1085 m_pendingEvents->DeleteContents(true);
1086 delete m_pendingEvents;
1087
1088 // Remove us from wxPendingEvents if necessary.
1089 if ( wxPendingEvents )
1090 {
1091#if wxUSE_THREADS
1092 if (wxPendingEventsLocker)
1093 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1094#endif
1095
1096 if ( wxPendingEvents->DeleteObject(this) )
1097 {
1098 // check that we were present only once in the list
1099 wxASSERT_MSG( !wxPendingEvents->Find(this),
1100 "Handler occurs twice in wxPendingEvents list" );
1101 }
1102 //else: we weren't in this list at all, it's ok
1103
1104#if wxUSE_THREADS
1105 if (wxPendingEventsLocker)
1106 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1107#endif
1108 }
1109
1110 // we only delete object data, not untyped
1111 if ( m_clientDataType == wxClientData_Object )
1112 delete m_clientObject;
1113}
1114
1115#if wxUSE_THREADS
1116
1117bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1118{
1119 // check that we are really in a child thread
1120 wxASSERT_MSG( !wxThread::IsMain(),
1121 wxT("use ProcessEvent() in main thread") );
1122
1123 AddPendingEvent(event);
1124
1125 return true;
1126}
1127
1128#endif // wxUSE_THREADS
1129
1130void wxEvtHandler::AddPendingEvent(const wxEvent& event)
1131{
1132 // 1) Add event to list of pending events of this event handler
1133
1134 wxEvent *eventCopy = event.Clone();
1135
1136 // we must be able to copy the events here so the event class must
1137 // implement Clone() properly instead of just providing a NULL stab for it
1138 wxCHECK_RET( eventCopy,
1139 _T("events of this type aren't supposed to be posted") );
1140
1141 wxENTER_CRIT_SECT( m_pendingEventsLock );
1142
1143 if ( !m_pendingEvents )
1144 m_pendingEvents = new wxList;
1145
1146 m_pendingEvents->Append(eventCopy);
1147
1148 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1149
1150 // 2) Add this event handler to list of event handlers that
1151 // have pending events.
1152
1153 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1154
1155 if ( !wxPendingEvents )
1156 wxPendingEvents = new wxList;
1157 if ( !wxPendingEvents->Find(this) )
1158 wxPendingEvents->Append(this);
1159
1160 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1161
1162 // 3) Inform the system that new pending events are somewhere,
1163 // and that these should be processed in idle time.
1164 wxWakeUpIdle();
1165}
1166
1167void wxEvtHandler::ProcessPendingEvents()
1168{
1169 wxENTER_CRIT_SECT( m_pendingEventsLock );
1170
1171 // this method is only called by wxApp if this handler does have
1172 // pending events
1173 wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1174 "should have pending events if called" );
1175
1176 wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1177 wxEventPtr event(wx_static_cast(wxEvent *, node->GetData()));
1178
1179 // it's important we remove event from list before processing it, else a
1180 // nested event loop, for example from a modal dialog, might process the
1181 // same event again.
1182 m_pendingEvents->Erase(node);
1183
1184 // if there are no more pending events left, we don't need to stay in this
1185 // list
1186 if ( m_pendingEvents->IsEmpty() )
1187 wxPendingEvents->DeleteObject(this);
1188
1189 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1190
1191 ProcessEvent(*event);
1192
1193 // careful: this object could have been deleted by the event handler
1194 // executed by the above ProcessEvent() call, so we can't access any fields
1195 // of this object any more
1196}
1197
1198/*
1199 * Event table stuff
1200 */
1201/* static */ bool
1202wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1203 wxEvtHandler *handler,
1204 wxEvent& event)
1205{
1206 int tableId1 = entry.m_id,
1207 tableId2 = entry.m_lastId;
1208
1209 // match only if the event type is the same and the id is either -1 in
1210 // the event table (meaning "any") or the event id matches the id
1211 // specified in the event table either exactly or by falling into
1212 // range between first and last
1213 if ((tableId1 == wxID_ANY) ||
1214 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1215 (tableId2 != wxID_ANY &&
1216 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1217 {
1218 event.Skip(false);
1219 event.m_callbackUserData = entry.m_callbackUserData;
1220
1221#if wxUSE_EXCEPTIONS
1222 if ( wxTheApp )
1223 {
1224 // call the handler via wxApp method which allows the user to catch
1225 // any exceptions which may be thrown by any handler in the program
1226 // in one place
1227 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1228 }
1229 else
1230#endif // wxUSE_EXCEPTIONS
1231 {
1232 // no need for an extra virtual function call
1233 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1234 }
1235
1236 if (!event.GetSkipped())
1237 return true;
1238 }
1239
1240 return false;
1241}
1242
1243bool wxEvtHandler::TryParent(wxEvent& event)
1244{
1245 if ( wxTheApp && (this != wxTheApp) )
1246 {
1247 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1248 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1249 // processed appropriately via SearchEventTable.
1250 if ( event.GetEventType() != wxEVT_IDLE )
1251 {
1252 if ( wxTheApp->ProcessEvent(event) )
1253 return true;
1254 }
1255 }
1256
1257 return false;
1258}
1259
1260bool wxEvtHandler::ProcessEvent(wxEvent& event)
1261{
1262 // allow the application to hook into event processing
1263 if ( wxTheApp )
1264 {
1265 int rc = wxTheApp->FilterEvent(event);
1266 if ( rc != -1 )
1267 {
1268 wxASSERT_MSG( rc == 1 || rc == 0,
1269 _T("unexpected wxApp::FilterEvent return value") );
1270
1271 return rc != 0;
1272 }
1273 //else: proceed normally
1274 }
1275
1276 // An event handler can be enabled or disabled
1277 if ( GetEvtHandlerEnabled() )
1278 {
1279 // if we have a validator, it has higher priority than our own event
1280 // table
1281 if ( TryValidator(event) )
1282 return true;
1283
1284 // Handle per-instance dynamic event tables first
1285 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1286 return true;
1287
1288 // Then static per-class event tables
1289 if ( GetEventHashTable().HandleEvent(event, this) )
1290 return true;
1291 }
1292
1293 // Try going down the event handler chain
1294 if ( GetNextHandler() )
1295 {
1296 // notice that we shouldn't let the parent have the event even if the
1297 // next handler does not process it because it will have already passed
1298 // it to the parent in this case
1299 return GetNextHandler()->ProcessEvent(event);
1300 }
1301
1302 // Finally propagate the event upwards the window chain and/or to the
1303 // application object as necessary
1304 return TryParent(event);
1305}
1306
1307bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1308{
1309#if wxUSE_EXCEPTIONS
1310 try
1311 {
1312#endif
1313 return ProcessEvent(event);
1314#if wxUSE_EXCEPTIONS
1315 }
1316 catch ( ... )
1317 {
1318 wxEventLoopBase *loop = wxEventLoopBase::GetActive();
1319 try
1320 {
1321 if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1322 {
1323 if ( loop )
1324 loop->Exit();
1325 }
1326 //else: continue running current event loop
1327
1328 return false;
1329 }
1330 catch ( ... )
1331 {
1332 // OnExceptionInMainLoop() threw, possibly rethrowing the same
1333 // exception again: very good, but we still need Exit() to
1334 // be called
1335 if ( loop )
1336 loop->Exit();
1337 throw;
1338 }
1339 }
1340#endif // wxUSE_EXCEPTIONS
1341}
1342
1343
1344bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1345{
1346 const wxEventType eventType = event.GetEventType();
1347 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1348 {
1349 const wxEventTableEntry& entry = table.entries[i];
1350 if ( eventType == entry.m_eventType )
1351 {
1352 if ( ProcessEventIfMatches(entry, this, event) )
1353 return true;
1354 }
1355 }
1356
1357 return false;
1358}
1359
1360void wxEvtHandler::Connect( int id, int lastId,
1361 int eventType,
1362 wxObjectEventFunction func,
1363 wxObject *userData,
1364 wxEvtHandler* eventSink )
1365{
1366 wxDynamicEventTableEntry *entry =
1367 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1368
1369 if (!m_dynamicEvents)
1370 m_dynamicEvents = new wxList;
1371
1372 // Insert at the front of the list so most recent additions are found first
1373 m_dynamicEvents->Insert( (wxObject*) entry );
1374
1375 // Make sure we get to know when a sink is destroyed
1376 if ( eventSink )
1377 {
1378 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1379 if ( evtConnRef )
1380 evtConnRef->IncRef( );
1381 else
1382 evtConnRef = new wxEventConnectionRef(this, eventSink);
1383 }
1384}
1385
1386bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1387 wxObjectEventFunction func,
1388 wxObject *userData,
1389 wxEvtHandler* eventSink )
1390{
1391 if (!m_dynamicEvents)
1392 return false;
1393
1394 // Remove connection from tracker node (wxEventConnectionRef)
1395 if ( eventSink )
1396 {
1397 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1398 if ( evtConnRef )
1399 evtConnRef->DecRef();
1400 }
1401
1402 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1403 while (node)
1404 {
1405 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1406
1407 if ((entry->m_id == id) &&
1408 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1409 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1410 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1411 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1412 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1413 {
1414 if (entry->m_callbackUserData)
1415 delete entry->m_callbackUserData;
1416 m_dynamicEvents->Erase( node );
1417 delete entry;
1418 return true;
1419 }
1420 node = node->GetNext();
1421 }
1422 return false;
1423}
1424
1425bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1426{
1427 wxCHECK_MSG( m_dynamicEvents, false,
1428 wxT("caller should check that we have dynamic events") );
1429
1430 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1431 while (node)
1432 {
1433 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1434
1435 // get next node before (maybe) calling the event handler as it could
1436 // call Disconnect() invalidating the current node
1437 node = node->GetNext();
1438
1439 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1440 {
1441 wxEvtHandler *handler = entry->m_eventSink ? entry->m_eventSink
1442 : this;
1443 if ( ProcessEventIfMatches(*entry, handler, event) )
1444 return true;
1445 }
1446 }
1447
1448 return false;
1449}
1450
1451void wxEvtHandler::DoSetClientObject( wxClientData *data )
1452{
1453 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1454 wxT("can't have both object and void client data") );
1455
1456 if ( m_clientObject )
1457 delete m_clientObject;
1458
1459 m_clientObject = data;
1460 m_clientDataType = wxClientData_Object;
1461}
1462
1463wxClientData *wxEvtHandler::DoGetClientObject() const
1464{
1465 // it's not an error to call GetClientObject() on a window which doesn't
1466 // have client data at all - NULL will be returned
1467 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1468 wxT("this window doesn't have object client data") );
1469
1470 return m_clientObject;
1471}
1472
1473void wxEvtHandler::DoSetClientData( void *data )
1474{
1475 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1476 wxT("can't have both object and void client data") );
1477
1478 m_clientData = data;
1479 m_clientDataType = wxClientData_Void;
1480}
1481
1482void *wxEvtHandler::DoGetClientData() const
1483{
1484 // it's not an error to call GetClientData() on a window which doesn't have
1485 // client data at all - NULL will be returned
1486 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1487 wxT("this window doesn't have void client data") );
1488
1489 return m_clientData;
1490}
1491
1492// A helper to find an wxEventConnectionRef object
1493wxEventConnectionRef *
1494wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1495{
1496 for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1497 {
1498 // we only want wxEventConnectionRef nodes here
1499 wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1500 if ( evtConnRef && evtConnRef->m_src == this )
1501 {
1502 wxASSERT( evtConnRef->m_sink==eventSink );
1503 return evtConnRef;
1504 }
1505 }
1506
1507 return NULL;
1508}
1509
1510void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1511{
1512 wxASSERT(m_dynamicEvents);
1513
1514 // remove all connections with this sink
1515 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1516 while (node)
1517 {
1518 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1519 node_nxt = node->GetNext();
1520
1521 if ( entry->m_eventSink==sink )
1522 {
1523 if (entry->m_callbackUserData)
1524 delete entry->m_callbackUserData;
1525 m_dynamicEvents->Erase( node );
1526 delete entry;
1527 }
1528 node = node_nxt;
1529 }
1530}
1531
1532#endif // wxUSE_BASE
1533
1534#if wxUSE_GUI
1535
1536// Find a window with the focus, that is also a descendant of the given window.
1537// This is used to determine the window to initially send commands to.
1538wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1539{
1540 // Process events starting with the window with the focus, if any.
1541 wxWindow* focusWin = wxWindow::FindFocus();
1542 wxWindow* win = focusWin;
1543
1544 // Check if this is a descendant of this frame.
1545 // If not, win will be set to NULL.
1546 while (win)
1547 {
1548 if (win == ancestor)
1549 break;
1550 else
1551 win = win->GetParent();
1552 }
1553 if (win == (wxWindow*) NULL)
1554 focusWin = (wxWindow*) NULL;
1555
1556 return focusWin;
1557}
1558
1559// ----------------------------------------------------------------------------
1560// wxEventBlocker
1561// ----------------------------------------------------------------------------
1562
1563wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1564{
1565 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1566
1567 m_window = win;
1568
1569 Block(type);
1570 m_window->PushEventHandler(this);
1571}
1572
1573wxEventBlocker::~wxEventBlocker()
1574{
1575 wxEvtHandler *popped = m_window->PopEventHandler(false);
1576 wxCHECK_RET(popped == this,
1577 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1578}
1579
1580bool wxEventBlocker::ProcessEvent(wxEvent& event)
1581{
1582 // should this event be blocked?
1583 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1584 {
1585 wxEventType t = (wxEventType)m_eventsToBlock[i];
1586 if ( t == wxEVT_ANY || t == event.GetEventType() )
1587 return true; // yes, it should: mark this event as processed
1588 }
1589
1590 return false;
1591}
1592
1593#endif // wxUSE_GUI
wxWidgets (Impactor)