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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 m_wasProcessed = false;
356}
357
358wxEvent::wxEvent(const wxEvent& src)
359 : wxObject(src)
360 , m_eventObject(src.m_eventObject)
361 , m_eventType(src.m_eventType)
362 , m_timeStamp(src.m_timeStamp)
363 , m_id(src.m_id)
364 , m_callbackUserData(src.m_callbackUserData)
365 , m_propagationLevel(src.m_propagationLevel)
366 , m_skipped(src.m_skipped)
367 , m_isCommandEvent(src.m_isCommandEvent)
368 , m_wasProcessed(false)
369{
370}
371
372wxEvent& wxEvent::operator=(const wxEvent& src)
373{
374 wxObject::operator=(src);
375
376 m_eventObject = src.m_eventObject;
377 m_eventType = src.m_eventType;
378 m_timeStamp = src.m_timeStamp;
379 m_id = src.m_id;
380 m_callbackUserData = src.m_callbackUserData;
381 m_propagationLevel = src.m_propagationLevel;
382 m_skipped = src.m_skipped;
383 m_isCommandEvent = src.m_isCommandEvent;
384
385 // don't change m_wasProcessed
386
387 return *this;
388}
389
390#endif // wxUSE_BASE
391
392#if wxUSE_GUI
393
394/*
395 * Command events
396 *
397 */
398
399#ifdef __VISUALC__
400 // 'this' : used in base member initializer list (for m_commandString)
401 #pragma warning(disable:4355)
402#endif
403
404wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
405 : wxEvent(theId, commandType)
406{
407 m_clientData = NULL;
408 m_clientObject = NULL;
409 m_extraLong = 0;
410 m_commandInt = 0;
411 m_isCommandEvent = true;
412
413 // the command events are propagated upwards by default
414 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
415}
416
417#ifdef __VISUALC__
418 #pragma warning(default:4355)
419#endif
420
421wxString wxCommandEvent::GetString() const
422{
423 if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
424 {
425 return m_cmdString;
426 }
427 else
428 {
429#if wxUSE_TEXTCTRL
430 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
431 if ( txt )
432 return txt->GetValue();
433 else
434#endif // wxUSE_TEXTCTRL
435 return m_cmdString;
436 }
437}
438
439/*
440 * UI update events
441 */
442
443#if wxUSE_LONGLONG
444wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
445#endif
446
447long wxUpdateUIEvent::sm_updateInterval = 0;
448
449wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
450
451// Can we update?
452bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
453{
454 // Don't update if we've switched global updating off
455 // and this window doesn't support updates.
456 if (win &&
457 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
458 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
459 return false;
460
461 if (sm_updateInterval == -1)
462 return false;
463
464 if (sm_updateInterval == 0)
465 return true;
466
467#if wxUSE_STOPWATCH && wxUSE_LONGLONG
468 wxLongLong now = wxGetLocalTimeMillis();
469 if (now > (sm_lastUpdate + sm_updateInterval))
470 {
471 return true;
472 }
473
474 return false;
475#else
476 // If we don't have wxStopWatch or wxLongLong, we
477 // should err on the safe side and update now anyway.
478 return true;
479#endif
480}
481
482// Reset the update time to provide a delay until the next
483// time we should update
484void wxUpdateUIEvent::ResetUpdateTime()
485{
486#if wxUSE_STOPWATCH && wxUSE_LONGLONG
487 if (sm_updateInterval > 0)
488 {
489 wxLongLong now = wxGetLocalTimeMillis();
490 if (now > (sm_lastUpdate + sm_updateInterval))
491 {
492 sm_lastUpdate = now;
493 }
494 }
495#endif
496}
497
498/*
499 * Scroll events
500 */
501
502wxScrollEvent::wxScrollEvent(wxEventType commandType,
503 int id,
504 int pos,
505 int orient)
506 : wxCommandEvent(commandType, id)
507{
508 m_extraLong = orient;
509 m_commandInt = pos;
510}
511
512/*
513 * ScrollWin events
514 */
515
516wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
517 int pos,
518 int orient)
519{
520 m_eventType = commandType;
521 m_extraLong = orient;
522 m_commandInt = pos;
523}
524
525/*
526 * Mouse events
527 *
528 */
529
530wxMouseEvent::wxMouseEvent(wxEventType commandType)
531{
532 m_eventType = commandType;
533
534 m_x = 0;
535 m_y = 0;
536
537 m_leftDown = false;
538 m_middleDown = false;
539 m_rightDown = false;
540 m_aux1Down = false;
541 m_aux2Down = false;
542
543 m_clickCount = -1;
544
545 m_wheelRotation = 0;
546 m_wheelDelta = 0;
547 m_linesPerAction = 0;
548 m_wheelAxis = 0;
549}
550
551void wxMouseEvent::Assign(const wxMouseEvent& event)
552{
553 wxEvent::operator=(event);
554
555 // Borland C++ 5.82 doesn't compile an explicit call to an implicitly
556 // defined operator=() so need to do it this way:
557 *static_cast<wxMouseState *>(this) = event;
558
559 m_x = event.m_x;
560 m_y = event.m_y;
561
562 m_leftDown = event.m_leftDown;
563 m_middleDown = event.m_middleDown;
564 m_rightDown = event.m_rightDown;
565 m_aux1Down = event.m_aux1Down;
566 m_aux2Down = event.m_aux2Down;
567
568 m_wheelRotation = event.m_wheelRotation;
569 m_wheelDelta = event.m_wheelDelta;
570 m_linesPerAction = event.m_linesPerAction;
571 m_wheelAxis = event.m_wheelAxis;
572}
573
574// return true if was a button dclick event
575bool wxMouseEvent::ButtonDClick(int but) const
576{
577 switch (but)
578 {
579 default:
580 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDClick"));
581 // fall through
582
583 case wxMOUSE_BTN_ANY:
584 return (LeftDClick() || MiddleDClick() || RightDClick() ||
585 Aux1DClick() || Aux2DClick());
586
587 case wxMOUSE_BTN_LEFT:
588 return LeftDClick();
589
590 case wxMOUSE_BTN_MIDDLE:
591 return MiddleDClick();
592
593 case wxMOUSE_BTN_RIGHT:
594 return RightDClick();
595
596 case wxMOUSE_BTN_AUX1:
597 return Aux1DClick();
598
599 case wxMOUSE_BTN_AUX2:
600 return Aux2DClick();
601 }
602}
603
604// return true if was a button down event
605bool wxMouseEvent::ButtonDown(int but) const
606{
607 switch (but)
608 {
609 default:
610 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonDown"));
611 // fall through
612
613 case wxMOUSE_BTN_ANY:
614 return (LeftDown() || MiddleDown() || RightDown() ||
615 Aux1Down() || Aux2Down());
616
617 case wxMOUSE_BTN_LEFT:
618 return LeftDown();
619
620 case wxMOUSE_BTN_MIDDLE:
621 return MiddleDown();
622
623 case wxMOUSE_BTN_RIGHT:
624 return RightDown();
625
626 case wxMOUSE_BTN_AUX1:
627 return Aux1Down();
628
629 case wxMOUSE_BTN_AUX2:
630 return Aux2Down();
631 }
632}
633
634// return true if was a button up event
635bool wxMouseEvent::ButtonUp(int but) const
636{
637 switch (but)
638 {
639 default:
640 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonUp"));
641 // fall through
642
643 case wxMOUSE_BTN_ANY:
644 return (LeftUp() || MiddleUp() || RightUp() ||
645 Aux1Up() || Aux2Up());
646
647 case wxMOUSE_BTN_LEFT:
648 return LeftUp();
649
650 case wxMOUSE_BTN_MIDDLE:
651 return MiddleUp();
652
653 case wxMOUSE_BTN_RIGHT:
654 return RightUp();
655
656 case wxMOUSE_BTN_AUX1:
657 return Aux1Up();
658
659 case wxMOUSE_BTN_AUX2:
660 return Aux2Up();
661 }
662}
663
664// return true if the given button is currently changing state
665bool wxMouseEvent::Button(int but) const
666{
667 switch (but)
668 {
669 default:
670 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::Button"));
671 // fall through
672
673 case wxMOUSE_BTN_ANY:
674 return ButtonUp(wxMOUSE_BTN_ANY) ||
675 ButtonDown(wxMOUSE_BTN_ANY) ||
676 ButtonDClick(wxMOUSE_BTN_ANY);
677
678 case wxMOUSE_BTN_LEFT:
679 return LeftDown() || LeftUp() || LeftDClick();
680
681 case wxMOUSE_BTN_MIDDLE:
682 return MiddleDown() || MiddleUp() || MiddleDClick();
683
684 case wxMOUSE_BTN_RIGHT:
685 return RightDown() || RightUp() || RightDClick();
686
687 case wxMOUSE_BTN_AUX1:
688 return Aux1Down() || Aux1Up() || Aux1DClick();
689
690 case wxMOUSE_BTN_AUX2:
691 return Aux2Down() || Aux2Up() || Aux2DClick();
692 }
693}
694
695bool wxMouseEvent::ButtonIsDown(int but) const
696{
697 switch (but)
698 {
699 default:
700 wxFAIL_MSG(wxT("invalid parameter in wxMouseEvent::ButtonIsDown"));
701 // fall through
702
703 case wxMOUSE_BTN_ANY:
704 return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down();
705
706 case wxMOUSE_BTN_LEFT:
707 return LeftIsDown();
708
709 case wxMOUSE_BTN_MIDDLE:
710 return MiddleIsDown();
711
712 case wxMOUSE_BTN_RIGHT:
713 return RightIsDown();
714
715 case wxMOUSE_BTN_AUX1:
716 return Aux1IsDown();
717
718 case wxMOUSE_BTN_AUX2:
719 return Aux2IsDown();
720 }
721}
722
723int wxMouseEvent::GetButton() const
724{
725 for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ )
726 {
727 if ( Button(i) )
728 {
729 return i;
730 }
731 }
732
733 return wxMOUSE_BTN_NONE;
734}
735
736// Find the logical position of the event given the DC
737wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
738{
739 wxPoint pt(dc.DeviceToLogicalX(m_x), dc.DeviceToLogicalY(m_y));
740 return pt;
741}
742
743
744/*
745 * Keyboard event
746 *
747 */
748
749wxKeyEvent::wxKeyEvent(wxEventType type)
750{
751 m_eventType = type;
752 m_keyCode = 0;
753 m_scanCode = 0;
754#if wxUSE_UNICODE
755 m_uniChar = 0;
756#endif
757}
758
759wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
760 : wxEvent(evt),
761 wxKeyboardState(evt)
762{
763 m_x = evt.m_x;
764 m_y = evt.m_y;
765
766 m_keyCode = evt.m_keyCode;
767
768 m_scanCode = evt.m_scanCode;
769 m_rawCode = evt.m_rawCode;
770 m_rawFlags = evt.m_rawFlags;
771
772#if wxUSE_UNICODE
773 m_uniChar = evt.m_uniChar;
774#endif
775}
776
777wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
778{
779 SetEventType(wxEVT_CREATE);
780 SetEventObject(win);
781}
782
783wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
784{
785 SetEventType(wxEVT_DESTROY);
786 SetEventObject(win);
787}
788
789wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
790 : wxCommandEvent(wxEVT_CHILD_FOCUS)
791{
792 SetEventObject(win);
793}
794
795// ----------------------------------------------------------------------------
796// wxHelpEvent
797// ----------------------------------------------------------------------------
798
799/* static */
800wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
801{
802 if ( origin == Origin_Unknown )
803 {
804 // assume that the event comes from the help button if it's not from
805 // keyboard and that pressing F1 always results in the help event
806 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
807 }
808
809 return origin;
810}
811
812#endif // wxUSE_GUI
813
814
815#if wxUSE_BASE
816
817// ----------------------------------------------------------------------------
818// wxEventHashTable
819// ----------------------------------------------------------------------------
820
821static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
822
823wxEventHashTable* wxEventHashTable::sm_first = NULL;
824
825wxEventHashTable::wxEventHashTable(const wxEventTable &table)
826 : m_table(table),
827 m_rebuildHash(true)
828{
829 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
830
831 m_next = sm_first;
832 if (m_next)
833 m_next->m_previous = this;
834 sm_first = this;
835}
836
837wxEventHashTable::~wxEventHashTable()
838{
839 if (m_next)
840 m_next->m_previous = m_previous;
841 if (m_previous)
842 m_previous->m_next = m_next;
843 if (sm_first == this)
844 sm_first = m_next;
845
846 Clear();
847}
848
849void wxEventHashTable::Clear()
850{
851 for ( size_t i = 0; i < m_size; i++ )
852 {
853 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
854 delete eTTnode;
855 }
856
857 delete[] m_eventTypeTable;
858 m_eventTypeTable = NULL;
859
860 m_size = 0;
861}
862
863#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
864
865// Clear all tables
866void wxEventHashTable::ClearAll()
867{
868 wxEventHashTable* table = sm_first;
869 while (table)
870 {
871 table->Clear();
872 table = table->m_next;
873 }
874}
875
876#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
877
878bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
879{
880 if (m_rebuildHash)
881 {
882 InitHashTable();
883 m_rebuildHash = false;
884 }
885
886 if (!m_eventTypeTable)
887 return false;
888
889 // Find all entries for the given event type.
890 wxEventType eventType = event.GetEventType();
891 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
892 if (eTTnode && eTTnode->eventType == eventType)
893 {
894 // Now start the search for an event handler
895 // that can handle an event with the given ID.
896 const wxEventTableEntryPointerArray&
897 eventEntryTable = eTTnode->eventEntryTable;
898
899 const size_t count = eventEntryTable.GetCount();
900 for (size_t n = 0; n < count; n++)
901 {
902 const wxEventTableEntry& entry = *eventEntryTable[n];
903 if ( wxEvtHandler::ProcessEventIfMatchesId(entry, self, event) )
904 return true;
905 }
906 }
907
908 return false;
909}
910
911void wxEventHashTable::InitHashTable()
912{
913 // Loop over the event tables and all its base tables.
914 const wxEventTable *table = &m_table;
915 while (table)
916 {
917 // Retrieve all valid event handler entries
918 const wxEventTableEntry *entry = table->entries;
919 while (entry->m_fn != 0)
920 {
921 // Add the event entry in the Hash.
922 AddEntry(*entry);
923
924 entry++;
925 }
926
927 table = table->baseTable;
928 }
929
930 // Lets free some memory.
931 size_t i;
932 for(i = 0; i < m_size; i++)
933 {
934 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
935 if (eTTnode)
936 {
937 eTTnode->eventEntryTable.Shrink();
938 }
939 }
940}
941
942void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
943{
944 // This might happen 'accidentally' as the app is exiting
945 if (!m_eventTypeTable)
946 return;
947
948 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
949 EventTypeTablePointer eTTnode = *peTTnode;
950
951 if (eTTnode)
952 {
953 if (eTTnode->eventType != entry.m_eventType)
954 {
955 // Resize the table!
956 GrowEventTypeTable();
957 // Try again to add it.
958 AddEntry(entry);
959 return;
960 }
961 }
962 else
963 {
964 eTTnode = new EventTypeTable;
965 eTTnode->eventType = entry.m_eventType;
966 *peTTnode = eTTnode;
967 }
968
969 // Fill all hash entries between entry.m_id and entry.m_lastId...
970 eTTnode->eventEntryTable.Add(&entry);
971}
972
973void wxEventHashTable::AllocEventTypeTable(size_t size)
974{
975 m_eventTypeTable = new EventTypeTablePointer[size];
976 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
977 m_size = size;
978}
979
980void wxEventHashTable::GrowEventTypeTable()
981{
982 size_t oldSize = m_size;
983 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
984
985 // TODO: Search the most optimal grow sequence
986 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
987
988 for ( size_t i = 0; i < oldSize; /* */ )
989 {
990 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
991 if (eTToldNode)
992 {
993 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
994 EventTypeTablePointer eTTnode = *peTTnode;
995
996 // Check for collision, we don't want any.
997 if (eTTnode)
998 {
999 GrowEventTypeTable();
1000 continue; // Don't increment the counter,
1001 // as we still need to add this element.
1002 }
1003 else
1004 {
1005 // Get the old value and put it in the new table.
1006 *peTTnode = oldEventTypeTable[i];
1007 }
1008 }
1009
1010 i++;
1011 }
1012
1013 delete[] oldEventTypeTable;
1014}
1015
1016// ----------------------------------------------------------------------------
1017// wxEvtHandler
1018// ----------------------------------------------------------------------------
1019
1020/*
1021 * Event handler
1022 */
1023
1024wxEvtHandler::wxEvtHandler()
1025{
1026 m_nextHandler = NULL;
1027 m_previousHandler = NULL;
1028 m_enabled = true;
1029 m_dynamicEvents = NULL;
1030 m_pendingEvents = NULL;
1031
1032 // no client data (yet)
1033 m_clientData = NULL;
1034 m_clientDataType = wxClientData_None;
1035}
1036
1037wxEvtHandler::~wxEvtHandler()
1038{
1039 // Takes itself out of the list of handlers
1040 if (m_previousHandler)
1041 m_previousHandler->m_nextHandler = m_nextHandler;
1042
1043 if (m_nextHandler)
1044 m_nextHandler->m_previousHandler = m_previousHandler;
1045
1046 if (m_dynamicEvents)
1047 {
1048 for ( wxList::iterator it = m_dynamicEvents->begin(),
1049 end = m_dynamicEvents->end();
1050 it != end;
1051 ++it )
1052 {
1053 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1054
1055 // Remove ourselves from sink destructor notifications
1056 // (this has usually been done, in wxTrackable destructor)
1057 wxEvtHandler *eventSink = entry->m_fn->GetHandler();
1058 if ( eventSink )
1059 {
1060 wxEventConnectionRef * const
1061 evtConnRef = FindRefInTrackerList(eventSink);
1062 if ( evtConnRef )
1063 {
1064 eventSink->RemoveNode(evtConnRef);
1065 delete evtConnRef;
1066 }
1067 }
1068
1069 delete entry->m_callbackUserData;
1070 delete entry;
1071 }
1072 delete m_dynamicEvents;
1073 };
1074
1075 if (m_pendingEvents)
1076 m_pendingEvents->DeleteContents(true);
1077 delete m_pendingEvents;
1078
1079 // Remove us from wxHandlersWithPendingEvents if necessary.
1080 if ( wxHandlersWithPendingEvents )
1081 {
1082#if wxUSE_THREADS
1083 if (wxHandlersWithPendingEventsLocker)
1084 wxENTER_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1085#endif
1086
1087 if ( wxHandlersWithPendingEvents->DeleteObject(this) )
1088 {
1089 // check that we were present only once in the list
1090 wxASSERT_MSG( !wxHandlersWithPendingEvents->Find(this),
1091 "Handler occurs twice in wxHandlersWithPendingEvents list" );
1092 }
1093 //else: we weren't in this list at all, it's ok
1094
1095#if wxUSE_THREADS
1096 if (wxHandlersWithPendingEventsLocker)
1097 wxLEAVE_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1098#endif
1099 }
1100
1101 // we only delete object data, not untyped
1102 if ( m_clientDataType == wxClientData_Object )
1103 delete m_clientObject;
1104}
1105
1106#if wxUSE_THREADS
1107
1108bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1109{
1110 // check that we are really in a child thread
1111 wxASSERT_MSG( !wxThread::IsMain(),
1112 wxT("use ProcessEvent() in main thread") );
1113
1114 AddPendingEvent(event);
1115
1116 return true;
1117}
1118
1119#endif // wxUSE_THREADS
1120
1121void wxEvtHandler::QueueEvent(wxEvent *event)
1122{
1123 wxCHECK_RET( event, "NULL event can't be posted" );
1124
1125 // 1) Add this event to our list of pending events
1126 wxENTER_CRIT_SECT( m_pendingEventsLock );
1127
1128 if ( !m_pendingEvents )
1129 m_pendingEvents = new wxList;
1130
1131 m_pendingEvents->Append(event);
1132
1133 // 2) Add this event handler to list of event handlers that
1134 // have pending events.
1135
1136 wxENTER_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1137
1138 if ( !wxHandlersWithPendingEvents )
1139 wxHandlersWithPendingEvents = new wxList;
1140 if ( !wxHandlersWithPendingEvents->Find(this) )
1141 wxHandlersWithPendingEvents->Append(this);
1142
1143 wxLEAVE_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1144
1145 // only release m_pendingEventsLock now because otherwise there is a race
1146 // condition as described in the ticket #9093: we could process the event
1147 // just added to m_pendingEvents in our ProcessPendingEvents() below before
1148 // we had time to append this pointer to wxHandlersWithPendingEvents list; thus
1149 // breaking the invariant that a handler should be in the list iff it has
1150 // any pending events to process
1151 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1152
1153 // 3) Inform the system that new pending events are somewhere,
1154 // and that these should be processed in idle time.
1155 wxWakeUpIdle();
1156}
1157
1158void wxEvtHandler::ProcessPendingEvents()
1159{
1160 wxENTER_CRIT_SECT( m_pendingEventsLock );
1161
1162 // this method is only called by wxApp if this handler does have
1163 // pending events
1164 wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1165 "should have pending events if called" );
1166
1167 wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1168 wxEventPtr event(static_cast<wxEvent *>(node->GetData()));
1169
1170 // it's important we remove event from list before processing it, else a
1171 // nested event loop, for example from a modal dialog, might process the
1172 // same event again.
1173 m_pendingEvents->Erase(node);
1174
1175 // if there are no more pending events left, we don't need to stay in this
1176 // list
1177 if ( m_pendingEvents->IsEmpty() )
1178 {
1179#if wxUSE_THREADS
1180 if (wxHandlersWithPendingEventsLocker)
1181 wxENTER_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1182#endif
1183 wxHandlersWithPendingEvents->DeleteObject(this);
1184#if wxUSE_THREADS
1185 if (wxHandlersWithPendingEventsLocker)
1186 wxLEAVE_CRIT_SECT(*wxHandlersWithPendingEventsLocker);
1187#endif
1188 }
1189
1190 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1191
1192 ProcessEvent(*event);
1193
1194 // careful: this object could have been deleted by the event handler
1195 // executed by the above ProcessEvent() call, so we can't access any fields
1196 // of this object any more
1197}
1198
1199/*
1200 * Event table stuff
1201 */
1202/* static */ bool
1203wxEvtHandler::ProcessEventIfMatchesId(const wxEventTableEntryBase& entry,
1204 wxEvtHandler *handler,
1205 wxEvent& event)
1206{
1207 int tableId1 = entry.m_id,
1208 tableId2 = entry.m_lastId;
1209
1210 // match only if the event type is the same and the id is either -1 in
1211 // the event table (meaning "any") or the event id matches the id
1212 // specified in the event table either exactly or by falling into
1213 // range between first and last
1214 if ((tableId1 == wxID_ANY) ||
1215 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1216 (tableId2 != wxID_ANY &&
1217 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1218 {
1219 event.Skip(false);
1220 event.m_callbackUserData = entry.m_callbackUserData;
1221
1222#if wxUSE_EXCEPTIONS
1223 if ( wxTheApp )
1224 {
1225 // call the handler via wxApp method which allows the user to catch
1226 // any exceptions which may be thrown by any handler in the program
1227 // in one place
1228 wxTheApp->CallEventHandler(handler, *entry.m_fn, event);
1229 }
1230 else
1231#endif // wxUSE_EXCEPTIONS
1232 {
1233 (*entry.m_fn)(handler, 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 ( GetNextHandler() )
1246 {
1247 // the next handler will pass it to wxTheApp if it doesn't process it,
1248 // so return from here to avoid doing it again
1249 return GetNextHandler()->TryParent(event);
1250 }
1251
1252 if ( wxTheApp && (this != wxTheApp) )
1253 {
1254 // Special case: don't pass wxEVT_IDLE to wxApp, since it'll always
1255 // swallow it. wxEVT_IDLE is sent explicitly to wxApp so it will be
1256 // processed appropriately via SearchEventTable.
1257 if ( event.GetEventType() != wxEVT_IDLE )
1258 {
1259 if ( wxTheApp->ProcessEvent(event) )
1260 return true;
1261 }
1262 }
1263
1264 return false;
1265}
1266
1267bool wxEvtHandler::ProcessEvent(wxEvent& event)
1268{
1269 // allow the application to hook into event processing
1270 //
1271 // note that we should only do it if we're the first event handler called
1272 // to avoid calling FilterEvent() multiple times as the event goes through
1273 // the event handler chain and possibly upwards the window hierarchy
1274 if ( !event.WasProcessed() )
1275 {
1276 if ( wxTheApp )
1277 {
1278 int rc = wxTheApp->FilterEvent(event);
1279 if ( rc != -1 )
1280 {
1281 wxASSERT_MSG( rc == 1 || rc == 0,
1282 "unexpected wxApp::FilterEvent return value" );
1283
1284 return rc != 0;
1285 }
1286 //else: proceed normally
1287 }
1288 }
1289
1290 if ( ProcessEventHere(event) )
1291 return true;
1292
1293 // pass the event to the next handler, notice that we shouldn't call
1294 // TryParent() even if it doesn't handle the event as the last handler in
1295 // the chain will do it
1296 if ( GetNextHandler() )
1297 return GetNextHandler()->ProcessEvent(event);
1298
1299 // propagate the event upwards the window chain and/or to the application
1300 // object if it wasn't processed at this level
1301 return TryParent(event);
1302}
1303
1304bool wxEvtHandler::ProcessEventHere(wxEvent& event)
1305{
1306 // If the event handler is disabled it doesn't process any events
1307 if ( !GetEvtHandlerEnabled() )
1308 return false;
1309
1310 // If we have a validator, it has higher priority than our own event
1311 // handlers
1312 if ( TryValidator(event) )
1313 return true;
1314
1315 // Handle per-instance dynamic event tables first
1316 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1317 return true;
1318
1319 // Then static per-class event tables
1320 if ( GetEventHashTable().HandleEvent(event, this) )
1321 return true;
1322
1323 // We don't have a handler for this event.
1324 return false;
1325}
1326
1327bool wxEvtHandler::SafelyProcessEvent(wxEvent& event)
1328{
1329#if wxUSE_EXCEPTIONS
1330 try
1331 {
1332#endif
1333 return ProcessEvent(event);
1334#if wxUSE_EXCEPTIONS
1335 }
1336 catch ( ... )
1337 {
1338 wxEventLoopBase *loop = wxEventLoopBase::GetActive();
1339 try
1340 {
1341 if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() )
1342 {
1343 if ( loop )
1344 loop->Exit();
1345 }
1346 //else: continue running current event loop
1347
1348 return false;
1349 }
1350 catch ( ... )
1351 {
1352 // OnExceptionInMainLoop() threw, possibly rethrowing the same
1353 // exception again: very good, but we still need Exit() to
1354 // be called
1355 if ( loop )
1356 loop->Exit();
1357 throw;
1358 }
1359 }
1360#endif // wxUSE_EXCEPTIONS
1361}
1362
1363
1364bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event)
1365{
1366 const wxEventType eventType = event.GetEventType();
1367 for ( int i = 0; table.entries[i].m_fn != 0; i++ )
1368 {
1369 const wxEventTableEntry& entry = table.entries[i];
1370 if ( eventType == entry.m_eventType )
1371 {
1372 if ( ProcessEventIfMatchesId(entry, this, event) )
1373 return true;
1374 }
1375 }
1376
1377 return false;
1378}
1379
1380void wxEvtHandler::Subscribe( int id, int lastId,
1381 wxEventType eventType,
1382 wxEventFunctor *func,
1383 wxObject *userData )
1384{
1385 wxDynamicEventTableEntry *entry =
1386 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData);
1387
1388 if (!m_dynamicEvents)
1389 m_dynamicEvents = new wxList;
1390
1391 // Insert at the front of the list so most recent additions are found first
1392 m_dynamicEvents->Insert( (wxObject*) entry );
1393
1394 // Make sure we get to know when a sink is destroyed
1395 wxEvtHandler *eventSink = func->GetHandler();
1396 if ( eventSink && eventSink != this )
1397 {
1398 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1399 if ( evtConnRef )
1400 evtConnRef->IncRef( );
1401 else
1402 new wxEventConnectionRef(this, eventSink);
1403 }
1404}
1405
1406bool
1407wxEvtHandler::Unsubscribe(int id,
1408 int lastId,
1409 wxEventType eventType,
1410 const wxEventFunctor& func,
1411 wxObject *userData)
1412{
1413 if (!m_dynamicEvents)
1414 return false;
1415
1416 // Remove connection from tracker node (wxEventConnectionRef)
1417 wxEvtHandler *eventSink = func.GetHandler();
1418 if ( eventSink && eventSink != this )
1419 {
1420 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1421 if ( evtConnRef )
1422 evtConnRef->DecRef();
1423 }
1424
1425 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1426 while (node)
1427 {
1428 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1429
1430 if ((entry->m_id == id) &&
1431 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1432 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1433 entry->m_fn->Matches(func) &&
1434 ((entry->m_callbackUserData == userData) || !userData))
1435 {
1436 delete entry->m_callbackUserData;
1437 m_dynamicEvents->Erase( node );
1438 delete entry;
1439 return true;
1440 }
1441 node = node->GetNext();
1442 }
1443 return false;
1444}
1445
1446bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1447{
1448 wxCHECK_MSG( m_dynamicEvents, false,
1449 wxT("caller should check that we have dynamic events") );
1450
1451 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1452 while (node)
1453 {
1454 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1455
1456 // get next node before (maybe) calling the event handler as it could
1457 // call Disconnect() invalidating the current node
1458 node = node->GetNext();
1459
1460 if ( event.GetEventType() == entry->m_eventType )
1461 {
1462 wxEvtHandler *handler = entry->m_fn->GetHandler();
1463 if ( !handler )
1464 handler = this;
1465 if ( ProcessEventIfMatchesId(*entry, handler, event) )
1466 return true;
1467 }
1468 }
1469
1470 return false;
1471}
1472
1473void wxEvtHandler::DoSetClientObject( wxClientData *data )
1474{
1475 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1476 wxT("can't have both object and void client data") );
1477
1478 if ( m_clientObject )
1479 delete m_clientObject;
1480
1481 m_clientObject = data;
1482 m_clientDataType = wxClientData_Object;
1483}
1484
1485wxClientData *wxEvtHandler::DoGetClientObject() const
1486{
1487 // it's not an error to call GetClientObject() on a window which doesn't
1488 // have client data at all - NULL will be returned
1489 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1490 wxT("this window doesn't have object client data") );
1491
1492 return m_clientObject;
1493}
1494
1495void wxEvtHandler::DoSetClientData( void *data )
1496{
1497 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1498 wxT("can't have both object and void client data") );
1499
1500 m_clientData = data;
1501 m_clientDataType = wxClientData_Void;
1502}
1503
1504void *wxEvtHandler::DoGetClientData() const
1505{
1506 // it's not an error to call GetClientData() on a window which doesn't have
1507 // client data at all - NULL will be returned
1508 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1509 wxT("this window doesn't have void client data") );
1510
1511 return m_clientData;
1512}
1513
1514// A helper to find an wxEventConnectionRef object
1515wxEventConnectionRef *
1516wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1517{
1518 for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1519 {
1520 // we only want wxEventConnectionRef nodes here
1521 wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1522 if ( evtConnRef && evtConnRef->m_src == this )
1523 {
1524 wxASSERT( evtConnRef->m_sink==eventSink );
1525 return evtConnRef;
1526 }
1527 }
1528
1529 return NULL;
1530}
1531
1532void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1533{
1534 wxASSERT(m_dynamicEvents);
1535
1536 // remove all connections with this sink
1537 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1538 while (node)
1539 {
1540 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1541 node_nxt = node->GetNext();
1542
1543 if ( entry->m_fn->GetHandler() == sink )
1544 {
1545 delete entry->m_callbackUserData;
1546 m_dynamicEvents->Erase( node );
1547 delete entry;
1548 }
1549 node = node_nxt;
1550 }
1551}
1552
1553#endif // wxUSE_BASE
1554
1555#if wxUSE_GUI
1556
1557// Find a window with the focus, that is also a descendant of the given window.
1558// This is used to determine the window to initially send commands to.
1559wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1560{
1561 // Process events starting with the window with the focus, if any.
1562 wxWindow* focusWin = wxWindow::FindFocus();
1563 wxWindow* win = focusWin;
1564
1565 // Check if this is a descendant of this frame.
1566 // If not, win will be set to NULL.
1567 while (win)
1568 {
1569 if (win == ancestor)
1570 break;
1571 else
1572 win = win->GetParent();
1573 }
1574 if (win == NULL)
1575 focusWin = NULL;
1576
1577 return focusWin;
1578}
1579
1580// ----------------------------------------------------------------------------
1581// wxEventBlocker
1582// ----------------------------------------------------------------------------
1583
1584wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1585{
1586 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1587
1588 m_window = win;
1589
1590 Block(type);
1591 m_window->PushEventHandler(this);
1592}
1593
1594wxEventBlocker::~wxEventBlocker()
1595{
1596 wxEvtHandler *popped = m_window->PopEventHandler(false);
1597 wxCHECK_RET(popped == this,
1598 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1599}
1600
1601bool wxEventBlocker::ProcessEvent(wxEvent& event)
1602{
1603 // should this event be blocked?
1604 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1605 {
1606 wxEventType t = (wxEventType)m_eventsToBlock[i];
1607 if ( t == wxEVT_ANY || t == event.GetEventType() )
1608 return true; // yes, it should: mark this event as processed
1609 }
1610
1611 return false;
1612}
1613
1614#endif // wxUSE_GUI
1615
wxWidgets (Impactor)