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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_TERMINATOR() };
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 *wxHandlersWithPendingEvents = NULL;
149
150#if wxUSE_THREADS
151 // protects wxHandlersWithPendingEvents list
152 wxCriticalSection *wxHandlersWithPendingEventsLocker = 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)
162wxDEFINE_EVENT( wxEVT_IDLE, wxIdleEvent )
163
164#endif // wxUSE_BASE
165
166#if wxUSE_GUI
167
168wxDEFINE_EVENT( wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEvent )
169wxDEFINE_EVENT( wxEVT_COMMAND_CHECKBOX_CLICKED, wxCommandEvent )
170wxDEFINE_EVENT( wxEVT_COMMAND_CHOICE_SELECTED, wxCommandEvent )
171wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_SELECTED, wxCommandEvent )
172wxDEFINE_EVENT( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, wxCommandEvent )
173wxDEFINE_EVENT( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, wxCommandEvent )
174wxDEFINE_EVENT( wxEVT_COMMAND_MENU_SELECTED, wxCommandEvent )
175wxDEFINE_EVENT( wxEVT_COMMAND_SLIDER_UPDATED, wxCommandEvent )
176wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBOX_SELECTED, wxCommandEvent )
177wxDEFINE_EVENT( wxEVT_COMMAND_RADIOBUTTON_SELECTED, wxCommandEvent )
178wxDEFINE_EVENT( wxEVT_COMMAND_SCROLLBAR_UPDATED, wxCommandEvent )
179wxDEFINE_EVENT( wxEVT_COMMAND_VLBOX_SELECTED, wxCommandEvent )
180wxDEFINE_EVENT( wxEVT_COMMAND_COMBOBOX_SELECTED, wxCommandEvent )
181wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_RCLICKED, wxCommandEvent )
182wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_ENTER, wxCommandEvent )
183wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRL_UPDATED, wxCommandEvent )
184wxDEFINE_EVENT( wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED, wxCommandEvent )
185wxDEFINE_EVENT( wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED, wxCommandEvent )
186
187// Mouse event types
188wxDEFINE_EVENT( wxEVT_LEFT_DOWN, wxMouseEvent )
189wxDEFINE_EVENT( wxEVT_LEFT_UP, wxMouseEvent )
190wxDEFINE_EVENT( wxEVT_MIDDLE_DOWN, wxMouseEvent )
191wxDEFINE_EVENT( wxEVT_MIDDLE_UP, wxMouseEvent )
192wxDEFINE_EVENT( wxEVT_RIGHT_DOWN, wxMouseEvent )
193wxDEFINE_EVENT( wxEVT_RIGHT_UP, wxMouseEvent )
194wxDEFINE_EVENT( wxEVT_MOTION, wxMouseEvent )
195wxDEFINE_EVENT( wxEVT_ENTER_WINDOW, wxMouseEvent )
196wxDEFINE_EVENT( wxEVT_LEAVE_WINDOW, wxMouseEvent )
197wxDEFINE_EVENT( wxEVT_LEFT_DCLICK, wxMouseEvent )
198wxDEFINE_EVENT( wxEVT_MIDDLE_DCLICK, wxMouseEvent )
199wxDEFINE_EVENT( wxEVT_RIGHT_DCLICK, wxMouseEvent )
200wxDEFINE_EVENT( wxEVT_SET_FOCUS, wxFocusEvent )
201wxDEFINE_EVENT( wxEVT_KILL_FOCUS, wxFocusEvent )
202wxDEFINE_EVENT( wxEVT_CHILD_FOCUS, wxChildFocusEvent )
203wxDEFINE_EVENT( wxEVT_MOUSEWHEEL, wxMouseEvent )
204wxDEFINE_EVENT( wxEVT_AUX1_DOWN, wxMouseEvent )
205wxDEFINE_EVENT( wxEVT_AUX1_UP, wxMouseEvent )
206wxDEFINE_EVENT( wxEVT_AUX1_DCLICK, wxMouseEvent )
207wxDEFINE_EVENT( wxEVT_AUX2_DOWN, wxMouseEvent )
208wxDEFINE_EVENT( wxEVT_AUX2_UP, wxMouseEvent )
209wxDEFINE_EVENT( wxEVT_AUX2_DCLICK, wxMouseEvent )
210
211// Character input event type
212wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent )
213wxDEFINE_EVENT( wxEVT_CHAR_HOOK, wxKeyEvent )
214wxDEFINE_EVENT( wxEVT_NAVIGATION_KEY, wxNavigationKeyEvent )
215wxDEFINE_EVENT( wxEVT_KEY_DOWN, wxKeyEvent )
216wxDEFINE_EVENT( wxEVT_KEY_UP, wxKeyEvent )
217#if wxUSE_HOTKEY
218wxDEFINE_EVENT( wxEVT_HOTKEY, wxKeyEvent )
219#endif
220
221// Set cursor event
222wxDEFINE_EVENT( wxEVT_SET_CURSOR, wxSetCursorEvent )
223
224// wxScrollbar and wxSlider event identifiers
225wxDEFINE_EVENT( wxEVT_SCROLL_TOP, wxScrollEvent )
226wxDEFINE_EVENT( wxEVT_SCROLL_BOTTOM, wxScrollEvent )
227wxDEFINE_EVENT( wxEVT_SCROLL_LINEUP, wxScrollEvent )
228wxDEFINE_EVENT( wxEVT_SCROLL_LINEDOWN, wxScrollEvent )
229wxDEFINE_EVENT( wxEVT_SCROLL_PAGEUP, wxScrollEvent )
230wxDEFINE_EVENT( wxEVT_SCROLL_PAGEDOWN, wxScrollEvent )
231wxDEFINE_EVENT( wxEVT_SCROLL_THUMBTRACK, wxScrollEvent )
232wxDEFINE_EVENT( wxEVT_SCROLL_THUMBRELEASE, wxScrollEvent )
233wxDEFINE_EVENT( wxEVT_SCROLL_CHANGED, wxScrollEvent )
234
235// Scroll events from wxWindow
236wxDEFINE_EVENT( wxEVT_SCROLLWIN_TOP, wxScrollWinEvent )
237wxDEFINE_EVENT( wxEVT_SCROLLWIN_BOTTOM, wxScrollWinEvent )
238wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEUP, wxScrollWinEvent )
239wxDEFINE_EVENT( wxEVT_SCROLLWIN_LINEDOWN, wxScrollWinEvent )
240wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEUP, wxScrollWinEvent )
241wxDEFINE_EVENT( wxEVT_SCROLLWIN_PAGEDOWN, wxScrollWinEvent )
242wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBTRACK, wxScrollWinEvent )
243wxDEFINE_EVENT( wxEVT_SCROLLWIN_THUMBRELEASE, wxScrollWinEvent )
244
245// System events
246wxDEFINE_EVENT( wxEVT_SIZE, wxSizeEvent )
247wxDEFINE_EVENT( wxEVT_SIZING, wxSizeEvent )
248wxDEFINE_EVENT( wxEVT_MOVE, wxMoveEvent )
249wxDEFINE_EVENT( wxEVT_MOVING, wxMoveEvent )
250wxDEFINE_EVENT( wxEVT_MOVE_START, wxMoveEvent )
251wxDEFINE_EVENT( wxEVT_MOVE_END, wxMoveEvent )
252wxDEFINE_EVENT( wxEVT_CLOSE_WINDOW, wxCloseEvent )
253wxDEFINE_EVENT( wxEVT_END_SESSION, wxCloseEvent )
254wxDEFINE_EVENT( wxEVT_QUERY_END_SESSION, wxCloseEvent )
255wxDEFINE_EVENT( wxEVT_HIBERNATE, wxActivateEvent )
256wxDEFINE_EVENT( wxEVT_ACTIVATE_APP, wxActivateEvent )
257wxDEFINE_EVENT( wxEVT_ACTIVATE, wxActivateEvent )
258wxDEFINE_EVENT( wxEVT_CREATE, wxWindowCreateEvent )
259wxDEFINE_EVENT( wxEVT_DESTROY, wxWindowDestroyEvent )
260wxDEFINE_EVENT( wxEVT_SHOW, wxShowEvent )
261wxDEFINE_EVENT( wxEVT_ICONIZE, wxIconizeEvent )
262wxDEFINE_EVENT( wxEVT_MAXIMIZE, wxMaximizeEvent )
263wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_CHANGED, wxMouseCaptureChangedEvent )
264wxDEFINE_EVENT( wxEVT_MOUSE_CAPTURE_LOST, wxMouseCaptureLostEvent )
265wxDEFINE_EVENT( wxEVT_PAINT, wxPaintEvent )
266wxDEFINE_EVENT( wxEVT_ERASE_BACKGROUND, wxEraseEvent )
267wxDEFINE_EVENT( wxEVT_NC_PAINT, wxNcPaintEvent )
268wxDEFINE_EVENT( wxEVT_MENU_OPEN, wxMenuEvent )
269wxDEFINE_EVENT( wxEVT_MENU_CLOSE, wxMenuEvent )
270wxDEFINE_EVENT( wxEVT_MENU_HIGHLIGHT, wxMenuEvent )
271wxDEFINE_EVENT( wxEVT_CONTEXT_MENU, wxContextMenuEvent )
272wxDEFINE_EVENT( wxEVT_SYS_COLOUR_CHANGED, wxSysColourChangedEvent )
273wxDEFINE_EVENT( wxEVT_DISPLAY_CHANGED, wxDisplayChangedEvent )
274wxDEFINE_EVENT( wxEVT_QUERY_NEW_PALETTE, wxQueryNewPaletteEvent )
275wxDEFINE_EVENT( wxEVT_PALETTE_CHANGED, wxPaletteChangedEvent )
276wxDEFINE_EVENT( wxEVT_JOY_BUTTON_DOWN, wxJoystickEvent )
277wxDEFINE_EVENT( wxEVT_JOY_BUTTON_UP, wxJoystickEvent )
278wxDEFINE_EVENT( wxEVT_JOY_MOVE, wxJoystickEvent )
279wxDEFINE_EVENT( wxEVT_JOY_ZMOVE, wxJoystickEvent )
280wxDEFINE_EVENT( wxEVT_DROP_FILES, wxDropFilesEvent )
281wxDEFINE_EVENT( wxEVT_INIT_DIALOG, wxInitDialogEvent )
282wxDEFINE_EVENT( wxEVT_UPDATE_UI, wxUpdateUIEvent )
283
284// Clipboard events
285wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_COPY, wxClipboardTextEvent )
286wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_CUT, wxClipboardTextEvent )
287wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_PASTE, wxClipboardTextEvent )
288
289// Generic command events
290// Note: a click is a higher-level event than button down/up
291wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_CLICK, wxCommandEvent )
292wxDEFINE_EVENT( wxEVT_COMMAND_LEFT_DCLICK, wxCommandEvent )
293wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_CLICK, wxCommandEvent )
294wxDEFINE_EVENT( wxEVT_COMMAND_RIGHT_DCLICK, wxCommandEvent )
295wxDEFINE_EVENT( wxEVT_COMMAND_SET_FOCUS, wxCommandEvent )
296wxDEFINE_EVENT( wxEVT_COMMAND_KILL_FOCUS, wxCommandEvent )
297wxDEFINE_EVENT( wxEVT_COMMAND_ENTER, wxCommandEvent )
298
299// Help events
300wxDEFINE_EVENT( wxEVT_HELP, wxHelpEvent )
301wxDEFINE_EVENT( wxEVT_DETAILED_HELP, wxHelpEvent )
302
303#endif // wxUSE_GUI
304
305#if wxUSE_BASE
306
307wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
308
309// ============================================================================
310// implementation
311// ============================================================================
312
313// ----------------------------------------------------------------------------
314// event initialization
315// ----------------------------------------------------------------------------
316
317int wxNewEventType()
318{
319 // MT-FIXME
320 static int s_lastUsedEventType = wxEVT_FIRST;
321
322 return s_lastUsedEventType++;
323}
324// ----------------------------------------------------------------------------
325// wxEventFunctor
326// ----------------------------------------------------------------------------
327
328wxEventFunctor::~wxEventFunctor()
329{
330}
331
332// ----------------------------------------------------------------------------
333// wxEvent
334// ----------------------------------------------------------------------------
335
336/*
337 * General wxWidgets events, covering
338 * all interesting things that might happen (button clicking, resizing,
339 * setting text in widgets, etc.).
340 *
341 * For each completely new event type, derive a new event class.
342 *
343 */
344
345wxEvent::wxEvent(int theId, wxEventType commandType )
346{
347 m_eventType = commandType;
348 m_eventObject = NULL;
349 m_timeStamp = 0;
350 m_id = theId;
351 m_skipped = false;
352 m_callbackUserData = NULL;
353 m_isCommandEvent = false;
354 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
355}
356
357wxEvent::wxEvent(const wxEvent& src)
358 : wxObject(src)
359 , m_eventObject(src.m_eventObject)
360 , m_eventType(src.m_eventType)
361 , m_timeStamp(src.m_timeStamp)
362 , m_id(src.m_id)
363 , m_callbackUserData(src.m_callbackUserData)
364 , m_propagationLevel(src.m_propagationLevel)
365 , m_skipped(src.m_skipped)
366 , m_isCommandEvent(src.m_isCommandEvent)
367{
368}
369
370wxEvent& wxEvent::operator=(const wxEvent& src)
371{
372 wxObject::operator=(src);
373
374 m_eventObject = src.m_eventObject;
375 m_eventType = src.m_eventType;
376 m_timeStamp = src.m_timeStamp;
377 m_id = src.m_id;
378 m_callbackUserData = src.m_callbackUserData;
379 m_propagationLevel = src.m_propagationLevel;
380 m_skipped = src.m_skipped;
381 m_isCommandEvent = src.m_isCommandEvent;
382
383 return *this;
384}
385
386#endif // wxUSE_BASE
387
388#if wxUSE_GUI
389
390/*
391 * Command events
392 *
393 */
394
395#ifdef __VISUALC__
396 // 'this' : used in base member initializer list (for m_commandString)
397 #pragma warning(disable:4355)
398#endif
399
400wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
401 : wxEvent(theId, commandType)
402{
403 m_clientData = NULL;
404 m_clientObject = NULL;
405 m_extraLong = 0;
406 m_commandInt = 0;
407 m_isCommandEvent = true;
408
409 // the command events are propagated upwards by default
410 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
411}
412
413#ifdef __VISUALC__
414 #pragma warning(default:4355)
415#endif
416
417wxString wxCommandEvent::GetString() const
418{
419 if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
420 {
421 return m_cmdString;
422 }
423 else
424 {
425#if wxUSE_TEXTCTRL
426 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
427 if ( txt )
428 return txt->GetValue();
429 else
430#endif // wxUSE_TEXTCTRL
431 return m_cmdString;
432 }
433}
434
435/*
436 * UI update events
437 */
438
439#if wxUSE_LONGLONG
440wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
441#endif
442
443long wxUpdateUIEvent::sm_updateInterval = 0;
444
445wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
446
447// Can we update?
448bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
449{
450 // Don't update if we've switched global updating off
451 // and this window doesn't support updates.
452 if (win &&
453 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
454 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
455 return false;
456
457 if (sm_updateInterval == -1)
458 return false;
459
460 if (sm_updateInterval == 0)
461 return true;
462
463#if wxUSE_STOPWATCH && wxUSE_LONGLONG
464 wxLongLong now = wxGetLocalTimeMillis();
465 if (now > (sm_lastUpdate + sm_updateInterval))
466 {
467 return true;
468 }
469
470 return false;
471#else
472 // If we don't have wxStopWatch or wxLongLong, we
473 // should err on the safe side and update now anyway.
474 return true;
475#endif
476}
477
478// Reset the update time to provide a delay until the next
479// time we should update
480void wxUpdateUIEvent::ResetUpdateTime()
481{
482#if wxUSE_STOPWATCH && wxUSE_LONGLONG
483 if (sm_updateInterval > 0)
484 {
485 wxLongLong now = wxGetLocalTimeMillis();
486 if (now > (sm_lastUpdate + sm_updateInterval))
487 {
488 sm_lastUpdate = now;
489 }
490 }
491#endif
492}
493
494/*
495 * Scroll events
496 */
497
498wxScrollEvent::wxScrollEvent(wxEventType commandType,
499 int id,
500 int pos,
501 int orient)
502 : wxCommandEvent(commandType, id)
503{
504 m_extraLong = orient;
505 m_commandInt = pos;
506}
507
508/*
509 * ScrollWin events
510 */
511
512wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
513 int pos,
514 int orient)
515{
516 m_eventType = commandType;
517 m_extraLong = orient;
518 m_commandInt = pos;
519}
520
521/*
522 * Mouse events
523 *
524 */
525
526wxMouseEvent::wxMouseEvent(wxEventType commandType)
527{
528 m_eventType = commandType;
529
530 m_x = 0;
531 m_y = 0;
532
533 m_leftDown = false;
534 m_middleDown = false;
535 m_rightDown = false;
536 m_aux1Down = false;
537 m_aux2Down = false;
538
539 m_clickCount = -1;
540
541 m_wheelRotation = 0;
542 m_wheelDelta = 0;
543 m_linesPerAction = 0;
544 m_wheelAxis = 0;
545}
546
547void wxMouseEvent::Assign(const wxMouseEvent& event)
548{
549 wxEvent::operator=(event);
550
551 // Borland C++ 5.82 doesn't compile an explicit call to an implicitly
552 // defined operator=() so need to do it this way:
553 *static_cast<wxMouseState *>(this) = event;
554
555 m_x = event.m_x;
556 m_y = event.m_y;
557
558 m_leftDown = event.m_leftDown;
559 m_middleDown = event.m_middleDown;
560 m_rightDown = event.m_rightDown;
561 m_aux1Down = event.m_aux1Down;
562 m_aux2Down = event.m_aux2Down;
563
564 m_wheelRotation = event.m_wheelRotation;
565 m_wheelDelta = event.m_wheelDelta;
566 m_linesPerAction = event.m_linesPerAction;
567 m_wheelAxis = event.m_wheelAxis;
568}
569
570// return true if was a button dclick event
571bool wxMouseEvent::ButtonDClick(int but) const
572{
573 switch (but)
574 {
575 default:
576 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
577 // fall through
578
579 case wxMOUSE_BTN_ANY:
580 return (LeftDClick() || MiddleDClick() || RightDClick() ||
581 Aux1DClick() || Aux2DClick());
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 case wxMOUSE_BTN_AUX1:
593 return Aux1DClick();
594
595 case wxMOUSE_BTN_AUX2:
596 return Aux2DClick();
597 }
598}
599
600// return true if was a button down event
601bool wxMouseEvent::ButtonDown(int but) const
602{
603 switch (but)
604 {
605 default:
606 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
607 // fall through
608
609 case wxMOUSE_BTN_ANY:
610 return (LeftDown() || MiddleDown() || RightDown() ||
611 Aux1Down() || Aux2Down());
612
613 case wxMOUSE_BTN_LEFT:
614 return LeftDown();
615
616 case wxMOUSE_BTN_MIDDLE:
617 return MiddleDown();
618
619 case wxMOUSE_BTN_RIGHT:
620 return RightDown();
621
622 case wxMOUSE_BTN_AUX1:
623 return Aux1Down();
624
625 case wxMOUSE_BTN_AUX2:
626 return Aux2Down();
627 }
628}
629
630// return true if was a button up event
631bool wxMouseEvent::ButtonUp(int but) const
632{
633 switch (but)
634 {
635 default:
636 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
637 // fall through
638
639 case wxMOUSE_BTN_ANY:
640 return (LeftUp() || MiddleUp() || RightUp() ||
641 Aux1Up() || Aux2Up());
642
643 case wxMOUSE_BTN_LEFT:
644 return LeftUp();
645
646 case wxMOUSE_BTN_MIDDLE:
647 return MiddleUp();
648
649 case wxMOUSE_BTN_RIGHT:
650 return RightUp();
651
652 case wxMOUSE_BTN_AUX1:
653 return Aux1Up();
654
655 case wxMOUSE_BTN_AUX2:
656 return Aux2Up();
657 }
658}
659
660// return true if the given button is currently changing state
661bool wxMouseEvent::Button(int but) const
662{
663 switch (but)
664 {
665 default:
666 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
667 // fall through
668
669 case wxMOUSE_BTN_ANY:
670 return ButtonUp(wxMOUSE_BTN_ANY) ||
671 ButtonDown(wxMOUSE_BTN_ANY) ||
672 ButtonDClick(wxMOUSE_BTN_ANY);
673
674 case wxMOUSE_BTN_LEFT:
675 return LeftDown() || LeftUp() || LeftDClick();
676
677 case wxMOUSE_BTN_MIDDLE:
678 return MiddleDown() || MiddleUp() || MiddleDClick();
679
680 case wxMOUSE_BTN_RIGHT:
681 return RightDown() || RightUp() || RightDClick();
682
683 case wxMOUSE_BTN_AUX1:
684 return Aux1Down() || Aux1Up() || Aux1DClick();
685
686 case wxMOUSE_BTN_AUX2:
687 return Aux2Down() || Aux2Up() || Aux2DClick();
688 }
689}
690
691bool wxMouseEvent::ButtonIsDown(int but) const
692{
693 switch (but)
694 {
695 default:
696 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
697 // fall through
698
699 case wxMOUSE_BTN_ANY:
700 return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down();
701
702 case wxMOUSE_BTN_LEFT:
703 return LeftIsDown();
704
705 case wxMOUSE_BTN_MIDDLE:
706 return MiddleIsDown();
707
708 case wxMOUSE_BTN_RIGHT:
709 return RightIsDown();
710
711 case wxMOUSE_BTN_AUX1:
712 return Aux1IsDown();
713
714 case wxMOUSE_BTN_AUX2:
715 return Aux2IsDown();
716 }
717}
718
719int wxMouseEvent::GetButton() const
720{
721 for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
722 {
723 if ( Button(i) )
724 {
725 return i;
726 }
727 }
728
729 return wxMOUSE_BTN_NONE;
730}
731
732// Find the logical position of the event given the DC
733wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
734{
735 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
736 return pt;
737}
738
739
740/*
741 * Keyboard event
742 *
743 */
744
745wxKeyEvent::wxKeyEvent(wxEventType type)
746{
747 m_eventType = type;
748 m_keyCode = 0;
749 m_scanCode = 0;
750#if wxUSE_UNICODE
751 m_uniChar = 0;
752#endif
753}
754
755wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
756 : wxEvent(evt),
757 wxKeyboardState(evt)
758{
759 m_x = evt.m_x;
760 m_y = evt.m_y;
761
762 m_keyCode = evt.m_keyCode;
763
764 m_scanCode = evt.m_scanCode;
765 m_rawCode = evt.m_rawCode;
766 m_rawFlags = evt.m_rawFlags;
767
768#if wxUSE_UNICODE
769 m_uniChar = evt.m_uniChar;
770#endif
771}
772
773wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
774{
775 SetEventType(wxEVT_CREATE);
776 SetEventObject(win);
777}
778
779wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
780{
781 SetEventType(wxEVT_DESTROY);
782 SetEventObject(win);
783}
784
785wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
786 : wxCommandEvent(wxEVT_CHILD_FOCUS)
787{
788 SetEventObject(win);
789}
790
791// ----------------------------------------------------------------------------
792// wxHelpEvent
793// ----------------------------------------------------------------------------
794
795/* static */
796wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
797{
798 if ( origin == Origin_Unknown )
799 {
800 // assume that the event comes from the help button if it's not from
801 // keyboard and that pressing F1 always results in the help event
802 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
803 }
804
805 return origin;
806}
807
808#endif // wxUSE_GUI
809
810
811#if wxUSE_BASE
812
813// ----------------------------------------------------------------------------
814// wxEventHashTable
815// ----------------------------------------------------------------------------
816
817static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
818
819wxEventHashTable* wxEventHashTable::sm_first = NULL;
820
821wxEventHashTable::wxEventHashTable(const wxEventTable &table)
822 : m_table(table),
823 m_rebuildHash(true)
824{
825 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
826
827 m_next = sm_first;
828 if (m_next)
829 m_next->m_previous = this;
830 sm_first = this;
831}
832
833wxEventHashTable::~wxEventHashTable()
834{
835 if (m_next)
836 m_next->m_previous = m_previous;
837 if (m_previous)
838 m_previous->m_next = m_next;
839 if (sm_first == this)
840 sm_first = m_next;
841
842 Clear();
843}
844
845void wxEventHashTable::Clear()
846{
847 for ( size_t i = 0; i < m_size; i++ )
848 {
849 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
850 delete eTTnode;
851 }
852
853 delete[] m_eventTypeTable;
854 m_eventTypeTable = NULL;
855
856 m_size = 0;
857}
858
859#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
860
861// Clear all tables
862void wxEventHashTable::ClearAll()
863{
864 wxEventHashTable* table = sm_first;
865 while (table)
866 {
867 table->Clear();
868 table = table->m_next;
869 }
870}
871
872#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
873
874bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
875{
876 if (m_rebuildHash)
877 {
878 InitHashTable();
879 m_rebuildHash = false;
880 }
881
882 if (!m_eventTypeTable)
883 return false;
884
885 // Find all entries for the given event type.
886 wxEventType eventType = event.GetEventType();
887 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
888 if (eTTnode && eTTnode->eventType == eventType)
889 {
890 // Now start the search for an event handler
891 // that can handle an event with the given ID.
892 const wxEventTableEntryPointerArray&
893 eventEntryTable = eTTnode->eventEntryTable;
894
895 const size_t count = eventEntryTable.GetCount();
896 for (size_t n = 0; n < count; n++)
897 {
898 const wxEventTableEntry& entry = *eventEntryTable[n];
899 if ( wxEvtHandler::ProcessEventIfMatchesId(entry, self, event) )
900 return true;
901 }
902 }
903
904 return false;
905}
906
907void wxEventHashTable::InitHashTable()
908{
909 // Loop over the event tables and all its base tables.
910 const wxEventTable *table = &m_table;
911 while (table)
912 {
913 // Retrieve all valid event handler entries
914 const wxEventTableEntry *entry = table->entries;
915 while (entry->m_fn != 0)
916 {
917 // Add the event entry in the Hash.
918 AddEntry(*entry);
919
920 entry++;
921 }
922
923 table = table->baseTable;
924 }
925
926 // Lets free some memory.
927 size_t i;
928 for(i = 0; i < m_size; i++)
929 {
930 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
931 if (eTTnode)
932 {
933 eTTnode->eventEntryTable.Shrink();
934 }
935 }
936}
937
938void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
939{
940 // This might happen 'accidentally' as the app is exiting
941 if (!m_eventTypeTable)
942 return;
943
944 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
945 EventTypeTablePointer eTTnode = *peTTnode;
946
947 if (eTTnode)
948 {
949 if (eTTnode->eventType != entry.m_eventType)
950 {
951 // Resize the table!
952 GrowEventTypeTable();
953 // Try again to add it.
954 AddEntry(entry);
955 return;
956 }
957 }
958 else
959 {
960 eTTnode = new EventTypeTable;
961 eTTnode->eventType = entry.m_eventType;
962 *peTTnode = eTTnode;
963 }
964
965 // Fill all hash entries between entry.m_id and entry.m_lastId...
966 eTTnode->eventEntryTable.Add(&entry);
967}
968
969void wxEventHashTable::AllocEventTypeTable(size_t size)
970{
971 m_eventTypeTable = new EventTypeTablePointer[size];
972 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
973 m_size = size;
974}
975
976void wxEventHashTable::GrowEventTypeTable()
977{
978 size_t oldSize = m_size;
979 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
980
981 // TODO: Search the most optimal grow sequence
982 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
983
984 for ( size_t i = 0; i < oldSize; /* */ )
985 {
986 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
987 if (eTToldNode)
988 {
989 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
990 EventTypeTablePointer eTTnode = *peTTnode;
991
992 // Check for collision, we don't want any.
993 if (eTTnode)
994 {
995 GrowEventTypeTable();
996 continue; // Don't increment the counter,
997 // as we still need to add this element.
998 }
999 else
1000 {
1001 // Get the old value and put it in the new table.
1002 *peTTnode = oldEventTypeTable[i];
1003 }
1004 }
1005
1006 i++;
1007 }
1008
1009 delete[] oldEventTypeTable;
1010}
1011
1012// ----------------------------------------------------------------------------
1013// wxEvtHandler
1014// ----------------------------------------------------------------------------
1015
1016/*
1017 * Event handler
1018 */
1019
1020wxEvtHandler::wxEvtHandler()
1021{
1022 m_nextHandler = NULL;
1023 m_previousHandler = NULL;
1024 m_enabled = true;
1025 m_dynamicEvents = NULL;
1026 m_pendingEvents = NULL;
1027
1028 // no client data (yet)
1029 m_clientData = NULL;
1030 m_clientDataType = wxClientData_None;
1031}
1032
1033wxEvtHandler::~wxEvtHandler()
1034{
1035 // Takes itself out of the list of handlers
1036 if (m_previousHandler)
1037 m_previousHandler->m_nextHandler = m_nextHandler;
1038
1039 if (m_nextHandler)
1040 m_nextHandler->m_previousHandler = m_previousHandler;
1041
1042 if (m_dynamicEvents)
1043 {
1044 for ( wxList::iterator it = m_dynamicEvents->begin(),
1045 end = m_dynamicEvents->end();
1046 it != end;
1047 ++it )
1048 {
1049 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1050
1051 // Remove ourselves from sink destructor notifications
1052 // (this has usually been done, in wxTrackable destructor)
1053 wxEvtHandler *eventSink = entry->m_fn->GetHandler();
1054 if ( eventSink )
1055 {
1056 wxEventConnectionRef * const
1057 evtConnRef = FindRefInTrackerList(eventSink);
1058 if ( evtConnRef )
1059 {
1060 eventSink->RemoveNode(evtConnRef);
1061 delete evtConnRef;
1062 }
1063 }
1064
1065 delete entry->m_callbackUserData;
1066 delete entry;
1067 }
1068 delete m_dynamicEvents;
1069 };
1070
1071 if (m_pendingEvents)
1072 m_pendingEvents->DeleteContents(true);
1073 delete m_pendingEvents;
1074
1075 // Remove us from wxHandlersWithPendingEvents if necessary.
1076 if ( wxHandlersWithPendingEvents )
1077 {
1078#if wxUSE_THREADS
1079 if (wxHandlersWithPendingEventsLocker)
1080 wxENTER_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1081#endif
1082
1083 if ( wxHandlersWithPendingEvents->DeleteObject(this) )
1084 {
1085 // check that we were present only once in the list
1086 wxASSERT_MSG( !wxHandlersWithPendingEvents->Find(this),
1087 "Handler occurs twice in wxHandlersWithPendingEvents list" );
1088 }
1089 //else: we weren't in this list at all, it's ok
1090
1091#if wxUSE_THREADS
1092 if (wxHandlersWithPendingEventsLocker)
1093 wxLEAVE_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1094#endif
1095 }
1096
1097 // we only delete object data, not untyped
1098 if ( m_clientDataType == wxClientData_Object )
1099 delete m_clientObject;
1100}
1101
1102#if wxUSE_THREADS
1103
1104bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1105{
1106 // check that we are really in a child thread
1107 wxASSERT_MSG( !wxThread::IsMain(),
1108 wxT("use ProcessEvent() in main thread") );
1109
1110 AddPendingEvent(event);
1111
1112 return true;
1113}
1114
1115#endif // wxUSE_THREADS
1116
1117void wxEvtHandler::QueueEvent(wxEvent *event)
1118{
1119 wxCHECK_RET( event, "NULL event can't be posted" );
1120
1121 // 1) Add this event to our list of pending events
1122 wxENTER_CRIT_SECT( m_pendingEventsLock );
1123
1124 if ( !m_pendingEvents )
1125 m_pendingEvents = new wxList;
1126
1127 m_pendingEvents->Append(event);
1128
1129 // 2) Add this event handler to list of event handlers that
1130 // have pending events.
1131
1132 wxENTER_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1133
1134 if ( !wxHandlersWithPendingEvents )
1135 wxHandlersWithPendingEvents = new wxList;
1136 if ( !wxHandlersWithPendingEvents->Find(this) )
1137 wxHandlersWithPendingEvents->Append(this);
1138
1139 wxLEAVE_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1140
1141 // only release m_pendingEventsLock now because otherwise there is a race
1142 // condition as described in the ticket #9093: we could process the event
1143 // just added to m_pendingEvents in our ProcessPendingEvents() below before
1144 // we had time to append this pointer to wxHandlersWithPendingEvents list; thus
1145 // breaking the invariant that a handler should be in the list iff it has
1146 // any pending events to process
1147 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1148
1149 // 3) Inform the system that new pending events are somewhere,
1150 // and that these should be processed in idle time.
1151 wxWakeUpIdle();
1152}
1153
1154void wxEvtHandler::ProcessPendingEvents()
1155{
1156 wxENTER_CRIT_SECT( m_pendingEventsLock );
1157
1158 // this method is only called by wxApp if this handler does have
1159 // pending events
1160 wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1161 "should have pending events if called" );
1162
1163 wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1164 wxEventPtr event(static_cast<wxEvent *>(node->GetData()));
1165
1166 // it's important we remove event from list before processing it, else a
1167 // nested event loop, for example from a modal dialog, might process the
1168 // same event again.
1169 m_pendingEvents->Erase(node);
1170
1171 // if there are no more pending events left, we don't need to stay in this
1172 // list
1173 if ( m_pendingEvents->IsEmpty() )
1174 {
1175#if wxUSE_THREADS
1176 if (wxHandlersWithPendingEventsLocker)
1177 wxENTER_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1178#endif
1179 wxHandlersWithPendingEvents->DeleteObject(this);
1180#if wxUSE_THREADS
1181 if (wxHandlersWithPendingEventsLocker)
1182 wxLEAVE_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1183#endif
1184 }
1185
1186 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1187
1188 ProcessEvent(*event);
1189
1190 // careful: this object could have been deleted by the event handler
1191 // executed by the above ProcessEvent() call, so we can't access any fields
1192 // of this object any more
1193}
1194
1195/*
1196 * Event table stuff
1197 */
1198/* static */ bool
1199wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry,
1200 wxEvtHandler *handler,
1201 wxEvent& event)
1202{
1203 int tableId1 = entry.m_id,
1204 tableId2 = entry.m_lastId;
1205
1206 // match only if the event type is the same and the id is either -1 in
1207 // the event table (meaning "any") or the event id matches the id
1208 // specified in the event table either exactly or by falling into
1209 // range between first and last
1210 if ((tableId1 == wxID_ANY) ||
1211 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1212 (tableId2 != wxID_ANY &&
1213 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1214 {
1215 event.Skip(false);
1216 event.m_callbackUserData = entry.m_callbackUserData;
1217
1218#if wxUSE_EXCEPTIONS
1219 if ( wxTheApp )
1220 {
1221 // call the handler via wxApp method which allows the user to catch
1222 // any exceptions which may be thrown by any handler in the program
1223 // in one place
1224 wxTheApp->CallEventHandler(handler, *entry.m_fn, event);
1225 }
1226 else
1227#endif // wxUSE_EXCEPTIONS
1228 {
1229 (*entry.m_fn)(handler, event);
1230 }
1231
1232 if (!event.GetSkipped())
1233 return true;
1234 }
1235
1236 return false;
1237}
1238
1239bool wxEvtHandler::TryParent(wxEvent& event)
1240{
1241 if ( GetNextHandler() )
1242 {
1243 // the next handler will pass it to wxTheApp if it doesn't process it,
1244 // so return from here to avoid doing it again
1245 return GetNextHandler()->TryParent(event);
1246 }
1247
1248 if ( wxTheApp && (this != wxTheApp) )
1249 {
1250 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1251 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1252 // processed appropriately via SearchEventTable.
1253 if ( event.GetEventType() != wxEVT_IDLE )
1254 {
1255 if ( wxTheApp->ProcessEvent(event) )
1256 return true;
1257 }
1258 }
1259
1260 return false;
1261}
1262
1263bool wxEvtHandler::ProcessEvent(wxEvent& event)
1264{
1265 // allow the application to hook into event processing
1266 if ( wxTheApp )
1267 {
1268 int rc = wxTheApp->FilterEvent(event);
1269 if ( rc != -1 )
1270 {
1271 wxASSERT_MSG( rc == 1 || rc == 0,
1272 _T("unexpected wxApp::FilterEvent return value") );
1273
1274 return rc != 0;
1275 }
1276 //else: proceed normally
1277 }
1278
1279 if ( ProcessEventHere(event) )
1280 return true;
1281
1282 // propagate the event upwards the window chain and/or to the application
1283 // object if it wasn't processed at this level
1284 return TryParent(event);
1285}
1286
1287bool wxEvtHandler::ProcessEventHere(wxEvent& event)
1288{
1289 // An event handler can be enabled or disabled
1290 if ( GetEvtHandlerEnabled() )
1291 {
1292 // if we have a validator, it has higher priority than our own event
1293 // table
1294 if ( TryValidator(event) )
1295 return true;
1296
1297 // Handle per-instance dynamic event tables first
1298 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1299 return true;
1300
1301 // Then static per-class event tables
1302 if ( GetEventHashTable().HandleEvent(event, this) )
1303 return true;
1304 }
1305
1306 // Try going down the event handler chain
1307 if ( GetNextHandler() && GetNextHandler()->ProcessEventHere(event) )
1308 return true;
1309
1310 // We don't have a handler for this event.
1311 return false;
1312}
1313
1314bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1315{
1316#if wxUSE_EXCEPTIONS
1317 try
1318 {
1319#endif
1320 return ProcessEvent(event);
1321#if wxUSE_EXCEPTIONS
1322 }
1323 catch ( ... )
1324 {
1325 wxEventLoopBase *loop = wxEventLoopBase::GetActive();
1326 try
1327 {
1328 if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1329 {
1330 if ( loop )
1331 loop->Exit();
1332 }
1333 //else: continue running current event loop
1334
1335 return false;
1336 }
1337 catch ( ... )
1338 {
1339 // OnExceptionInMainLoop() threw, possibly rethrowing the same
1340 // exception again: very good, but we still need Exit() to
1341 // be called
1342 if ( loop )
1343 loop->Exit();
1344 throw;
1345 }
1346 }
1347#endif // wxUSE_EXCEPTIONS
1348}
1349
1350
1351bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1352{
1353 const wxEventType eventType = event.GetEventType();
1354 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1355 {
1356 const wxEventTableEntry& entry = table.entries[i];
1357 if ( eventType == entry.m_eventType )
1358 {
1359 if ( ProcessEventIfMatchesId(entry, this, event) )
1360 return true;
1361 }
1362 }
1363
1364 return false;
1365}
1366
1367void wxEvtHandler::Subscribe( int id, int lastId,
1368 wxEventType eventType,
1369 wxEventFunctor *func,
1370 wxObject *userData )
1371{
1372 wxDynamicEventTableEntry *entry =
1373 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData);
1374
1375 if (!m_dynamicEvents)
1376 m_dynamicEvents = new wxList;
1377
1378 // Insert at the front of the list so most recent additions are found first
1379 m_dynamicEvents->Insert( (wxObject*) entry );
1380
1381 // Make sure we get to know when a sink is destroyed
1382 wxEvtHandler *eventSink = func->GetHandler();
1383 if ( eventSink && eventSink != this )
1384 {
1385 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1386 if ( evtConnRef )
1387 evtConnRef->IncRef( );
1388 else
1389 new wxEventConnectionRef(this, eventSink);
1390 }
1391}
1392
1393bool
1394wxEvtHandler::Unsubscribe(int id,
1395 int lastId,
1396 wxEventType eventType,
1397 const wxEventFunctor& func,
1398 wxObject *userData)
1399{
1400 if (!m_dynamicEvents)
1401 return false;
1402
1403 // Remove connection from tracker node (wxEventConnectionRef)
1404 wxEvtHandler *eventSink = func.GetHandler();
1405 if ( eventSink && eventSink != this )
1406 {
1407 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1408 if ( evtConnRef )
1409 evtConnRef->DecRef();
1410 }
1411
1412 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1413 while (node)
1414 {
1415 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1416
1417 if ((entry->m_id == id) &&
1418 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1419 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1420 entry->m_fn->Matches(func) &&
1421 ((entry->m_callbackUserData == userData) || !userData))
1422 {
1423 delete entry->m_callbackUserData;
1424 m_dynamicEvents->Erase( node );
1425 delete entry;
1426 return true;
1427 }
1428 node = node->GetNext();
1429 }
1430 return false;
1431}
1432
1433bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1434{
1435 wxCHECK_MSG( m_dynamicEvents, false,
1436 wxT("caller should check that we have dynamic events") );
1437
1438 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1439 while (node)
1440 {
1441 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1442
1443 // get next node before (maybe) calling the event handler as it could
1444 // call Disconnect() invalidating the current node
1445 node = node->GetNext();
1446
1447 if ( event.GetEventType() == entry->m_eventType )
1448 {
1449 wxEvtHandler *handler = entry->m_fn->GetHandler();
1450 if ( !handler )
1451 handler = this;
1452 if ( ProcessEventIfMatchesId(*entry, handler, event) )
1453 return true;
1454 }
1455 }
1456
1457 return false;
1458}
1459
1460void wxEvtHandler::DoSetClientObject( wxClientData *data )
1461{
1462 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1463 wxT("can't have both object and void client data") );
1464
1465 if ( m_clientObject )
1466 delete m_clientObject;
1467
1468 m_clientObject = data;
1469 m_clientDataType = wxClientData_Object;
1470}
1471
1472wxClientData *wxEvtHandler::DoGetClientObject() const
1473{
1474 // it's not an error to call GetClientObject() on a window which doesn't
1475 // have client data at all - NULL will be returned
1476 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1477 wxT("this window doesn't have object client data") );
1478
1479 return m_clientObject;
1480}
1481
1482void wxEvtHandler::DoSetClientData( void *data )
1483{
1484 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1485 wxT("can't have both object and void client data") );
1486
1487 m_clientData = data;
1488 m_clientDataType = wxClientData_Void;
1489}
1490
1491void *wxEvtHandler::DoGetClientData() const
1492{
1493 // it's not an error to call GetClientData() on a window which doesn't have
1494 // client data at all - NULL will be returned
1495 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1496 wxT("this window doesn't have void client data") );
1497
1498 return m_clientData;
1499}
1500
1501// A helper to find an wxEventConnectionRef object
1502wxEventConnectionRef *
1503wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1504{
1505 for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1506 {
1507 // we only want wxEventConnectionRef nodes here
1508 wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1509 if ( evtConnRef && evtConnRef->m_src == this )
1510 {
1511 wxASSERT( evtConnRef->m_sink==eventSink );
1512 return evtConnRef;
1513 }
1514 }
1515
1516 return NULL;
1517}
1518
1519void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1520{
1521 wxASSERT(m_dynamicEvents);
1522
1523 // remove all connections with this sink
1524 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1525 while (node)
1526 {
1527 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1528 node_nxt = node->GetNext();
1529
1530 if ( entry->m_fn->GetHandler() == sink )
1531 {
1532 delete entry->m_callbackUserData;
1533 m_dynamicEvents->Erase( node );
1534 delete entry;
1535 }
1536 node = node_nxt;
1537 }
1538}
1539
1540#endif // wxUSE_BASE
1541
1542#if wxUSE_GUI
1543
1544// Find a window with the focus, that is also a descendant of the given window.
1545// This is used to determine the window to initially send commands to.
1546wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1547{
1548 // Process events starting with the window with the focus, if any.
1549 wxWindow* focusWin = wxWindow::FindFocus();
1550 wxWindow* win = focusWin;
1551
1552 // Check if this is a descendant of this frame.
1553 // If not, win will be set to NULL.
1554 while (win)
1555 {
1556 if (win == ancestor)
1557 break;
1558 else
1559 win = win->GetParent();
1560 }
1561 if (win == NULL)
1562 focusWin = NULL;
1563
1564 return focusWin;
1565}
1566
1567// ----------------------------------------------------------------------------
1568// wxEventBlocker
1569// ----------------------------------------------------------------------------
1570
1571wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1572{
1573 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1574
1575 m_window = win;
1576
1577 Block(type);
1578 m_window->PushEventHandler(this);
1579}
1580
1581wxEventBlocker::~wxEventBlocker()
1582{
1583 wxEvtHandler *popped = m_window->PopEventHandler(false);
1584 wxCHECK_RET(popped == this,
1585 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1586}
1587
1588bool wxEventBlocker::ProcessEvent(wxEvent& event)
1589{
1590 // should this event be blocked?
1591 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1592 {
1593 wxEventType t = (wxEventType)m_eventsToBlock[i];
1594 if ( t == wxEVT_ANY || t == event.GetEventType() )
1595 return true; // yes, it should: mark this event as processed
1596 }
1597
1598 return false;
1599}
1600
1601#endif // wxUSE_GUI
1602
wxWidgets (Impactor)