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1/////////////////////////////////////////////////////////////////////////////
2// Name: src/common/event.cpp
3// Purpose: Event classes
4// Author: Julian Smart
5// Modified by:
6// Created: 01/02/97
7// RCS-ID: $Id$
8// Copyright: (c) Julian Smart
9// Licence: wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
12// ============================================================================
13// declarations
14// ============================================================================
15
16// ----------------------------------------------------------------------------
17// headers
18// ----------------------------------------------------------------------------
19
20// For compilers that support precompilation, includes "wx.h".
21#include "wx/wxprec.h"
22
23#ifdef __BORLANDC__
24 #pragma hdrstop
25#endif
26
27#include "wx/event.h"
28#include "wx/evtloop.h"
29
30#ifndef WX_PRECOMP
31 #include "wx/list.h"
32 #include "wx/app.h"
33 #include "wx/utils.h"
34 #include "wx/stopwatch.h"
35 #include "wx/module.h"
36
37 #if wxUSE_GUI
38 #include "wx/window.h"
39 #include "wx/control.h"
40 #include "wx/dc.h"
41 #include "wx/textctrl.h"
42 #include "wx/validate.h"
43 #endif // wxUSE_GUI
44#endif
45
46#include "wx/thread.h"
47
48#if wxUSE_BASE
49 #include "wx/ptr_scpd.h"
50
51 wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr)
52 wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr)
53#endif // wxUSE_BASE
54
55// ----------------------------------------------------------------------------
56// wxWin macros
57// ----------------------------------------------------------------------------
58
59#if wxUSE_BASE
60 IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
61 IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
62 IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
63#endif // wxUSE_BASE
64
65#if wxUSE_GUI
66 IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
67 IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
68 IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
69 IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
70 IMPLEMENT_DYNAMIC_CLASS(wxMouseEvent, wxEvent)
71 IMPLEMENT_DYNAMIC_CLASS(wxKeyEvent, wxEvent)
72 IMPLEMENT_DYNAMIC_CLASS(wxSizeEvent, wxEvent)
73 IMPLEMENT_DYNAMIC_CLASS(wxPaintEvent, wxEvent)
74 IMPLEMENT_DYNAMIC_CLASS(wxNcPaintEvent, wxEvent)
75 IMPLEMENT_DYNAMIC_CLASS(wxEraseEvent, wxEvent)
76 IMPLEMENT_DYNAMIC_CLASS(wxMoveEvent, wxEvent)
77 IMPLEMENT_DYNAMIC_CLASS(wxFocusEvent, wxEvent)
78 IMPLEMENT_DYNAMIC_CLASS(wxChildFocusEvent, wxCommandEvent)
79 IMPLEMENT_DYNAMIC_CLASS(wxCloseEvent, wxEvent)
80 IMPLEMENT_DYNAMIC_CLASS(wxShowEvent, wxEvent)
81 IMPLEMENT_DYNAMIC_CLASS(wxMaximizeEvent, wxEvent)
82 IMPLEMENT_DYNAMIC_CLASS(wxIconizeEvent, wxEvent)
83 IMPLEMENT_DYNAMIC_CLASS(wxMenuEvent, wxEvent)
84 IMPLEMENT_DYNAMIC_CLASS(wxJoystickEvent, wxEvent)
85 IMPLEMENT_DYNAMIC_CLASS(wxDropFilesEvent, wxEvent)
86 IMPLEMENT_DYNAMIC_CLASS(wxActivateEvent, wxEvent)
87 IMPLEMENT_DYNAMIC_CLASS(wxInitDialogEvent, wxEvent)
88 IMPLEMENT_DYNAMIC_CLASS(wxSetCursorEvent, wxEvent)
89 IMPLEMENT_DYNAMIC_CLASS(wxSysColourChangedEvent, wxEvent)
90 IMPLEMENT_DYNAMIC_CLASS(wxDisplayChangedEvent, wxEvent)
91 IMPLEMENT_DYNAMIC_CLASS(wxUpdateUIEvent, wxCommandEvent)
92 IMPLEMENT_DYNAMIC_CLASS(wxNavigationKeyEvent, wxEvent)
93 IMPLEMENT_DYNAMIC_CLASS(wxPaletteChangedEvent, wxEvent)
94 IMPLEMENT_DYNAMIC_CLASS(wxQueryNewPaletteEvent, wxEvent)
95 IMPLEMENT_DYNAMIC_CLASS(wxWindowCreateEvent, wxEvent)
96 IMPLEMENT_DYNAMIC_CLASS(wxWindowDestroyEvent, wxEvent)
97 IMPLEMENT_DYNAMIC_CLASS(wxHelpEvent, wxCommandEvent)
98 IMPLEMENT_DYNAMIC_CLASS(wxContextMenuEvent, wxCommandEvent)
99 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureChangedEvent, wxEvent)
100 IMPLEMENT_DYNAMIC_CLASS(wxMouseCaptureLostEvent, wxEvent)
101 IMPLEMENT_DYNAMIC_CLASS(wxClipboardTextEvent, wxCommandEvent)
102#endif // wxUSE_GUI
103
104#if wxUSE_BASE
105
106const wxEventTable *wxEvtHandler::GetEventTable() const
107 { return &wxEvtHandler::sm_eventTable; }
108
109const wxEventTable wxEvtHandler::sm_eventTable =
110 { (const wxEventTable *)NULL, &wxEvtHandler::sm_eventTableEntries[0] };
111
112wxEventHashTable &wxEvtHandler::GetEventHashTable() const
113 { return wxEvtHandler::sm_eventHashTable; }
114
115wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
116
117const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
118 { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) };
119
120
121// wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
122// leaked, so we need to manually clean up all event tables before checking for
123// the memory leaks when using it, however this breaks re-initializing the
124// library (i.e. repeated calls to wxInitialize/wxUninitialize) because the
125// event tables won't be rebuilt the next time, so disable this by default
126#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
127
128class wxEventTableEntryModule: public wxModule
129{
130public:
131 wxEventTableEntryModule() { }
132 virtual bool OnInit() { return true; }
133 virtual void OnExit() { wxEventHashTable::ClearAll(); }
134
135 DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule)
136};
137
138IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
139
140#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
141
142// ----------------------------------------------------------------------------
143// global variables
144// ----------------------------------------------------------------------------
145
146// List containing event handlers with pending events (each handler can occur
147// at most once here)
148wxList *wxPendingEvents = NULL;
149
150#if wxUSE_THREADS
151 // protects wxPendingEvents list
152 wxCriticalSection *wxPendingEventsLocker = NULL;
153#endif
154
155// common event types are defined here, other event types are defined by the
156// components which use them
157
158const wxEventType wxEVT_FIRST = 10000;
159const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
160
161DEFINE_EVENT_TYPE(wxEVT_NULL)
162DEFINE_EVENT_TYPE(wxEVT_IDLE)
163DEFINE_EVENT_TYPE(wxEVT_SOCKET)
164DEFINE_EVENT_TYPE(wxEVT_TIMER)
165
166#endif // wxUSE_BASE
167
168#if wxUSE_GUI
169
170DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED)
171DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED)
172DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED)
173DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_SELECTED)
174DEFINE_EVENT_TYPE(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED)
175DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED)
176DEFINE_EVENT_TYPE(wxEVT_COMMAND_MENU_SELECTED)
177DEFINE_EVENT_TYPE(wxEVT_COMMAND_SLIDER_UPDATED)
178DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBOX_SELECTED)
179DEFINE_EVENT_TYPE(wxEVT_COMMAND_RADIOBUTTON_SELECTED)
180DEFINE_EVENT_TYPE(wxEVT_COMMAND_SCROLLBAR_UPDATED)
181DEFINE_EVENT_TYPE(wxEVT_COMMAND_VLBOX_SELECTED)
182DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
183DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
184DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
185DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
186DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED)
187DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
188
189// Mouse event types
190DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
191DEFINE_EVENT_TYPE(wxEVT_LEFT_UP)
192DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DOWN)
193DEFINE_EVENT_TYPE(wxEVT_MIDDLE_UP)
194DEFINE_EVENT_TYPE(wxEVT_RIGHT_DOWN)
195DEFINE_EVENT_TYPE(wxEVT_RIGHT_UP)
196DEFINE_EVENT_TYPE(wxEVT_MOTION)
197DEFINE_EVENT_TYPE(wxEVT_ENTER_WINDOW)
198DEFINE_EVENT_TYPE(wxEVT_LEAVE_WINDOW)
199DEFINE_EVENT_TYPE(wxEVT_LEFT_DCLICK)
200DEFINE_EVENT_TYPE(wxEVT_MIDDLE_DCLICK)
201DEFINE_EVENT_TYPE(wxEVT_RIGHT_DCLICK)
202DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS)
203DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS)
204DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS)
205DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL)
206DEFINE_EVENT_TYPE(wxEVT_AUX1_DOWN)
207DEFINE_EVENT_TYPE(wxEVT_AUX1_UP)
208DEFINE_EVENT_TYPE(wxEVT_AUX1_DCLICK)
209DEFINE_EVENT_TYPE(wxEVT_AUX2_DOWN)
210DEFINE_EVENT_TYPE(wxEVT_AUX2_UP)
211DEFINE_EVENT_TYPE(wxEVT_AUX2_DCLICK)
212
213// Non-client mouse events
214DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN)
215DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_UP)
216DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DOWN)
217DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_UP)
218DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DOWN)
219DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_UP)
220DEFINE_EVENT_TYPE(wxEVT_NC_MOTION)
221DEFINE_EVENT_TYPE(wxEVT_NC_ENTER_WINDOW)
222DEFINE_EVENT_TYPE(wxEVT_NC_LEAVE_WINDOW)
223DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DCLICK)
224DEFINE_EVENT_TYPE(wxEVT_NC_MIDDLE_DCLICK)
225DEFINE_EVENT_TYPE(wxEVT_NC_RIGHT_DCLICK)
226
227// Character input event type
228DEFINE_EVENT_TYPE(wxEVT_CHAR)
229DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
230DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
231DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
232DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
233#if wxUSE_HOTKEY
234DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
235#endif
236
237// Set cursor event
238DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
239
240// wxScrollbar and wxSlider event identifiers
241DEFINE_EVENT_TYPE(wxEVT_SCROLL_TOP)
242DEFINE_EVENT_TYPE(wxEVT_SCROLL_BOTTOM)
243DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEUP)
244DEFINE_EVENT_TYPE(wxEVT_SCROLL_LINEDOWN)
245DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
246DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
247DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
248DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
249DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
250
251// Scroll events from wxWindow
252DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
253DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_BOTTOM)
254DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEUP)
255DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_LINEDOWN)
256DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEUP)
257DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_PAGEDOWN)
258DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBTRACK)
259DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_THUMBRELEASE)
260
261// System events
262DEFINE_EVENT_TYPE(wxEVT_SIZE)
263DEFINE_EVENT_TYPE(wxEVT_SIZING)
264DEFINE_EVENT_TYPE(wxEVT_MOVE)
265DEFINE_EVENT_TYPE(wxEVT_MOVING)
266DEFINE_EVENT_TYPE(wxEVT_MOVE_START)
267DEFINE_EVENT_TYPE(wxEVT_MOVE_END)
268DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW)
269DEFINE_EVENT_TYPE(wxEVT_END_SESSION)
270DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION)
271DEFINE_EVENT_TYPE(wxEVT_HIBERNATE)
272DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP)
273DEFINE_EVENT_TYPE(wxEVT_ACTIVATE)
274DEFINE_EVENT_TYPE(wxEVT_CREATE)
275DEFINE_EVENT_TYPE(wxEVT_DESTROY)
276DEFINE_EVENT_TYPE(wxEVT_SHOW)
277DEFINE_EVENT_TYPE(wxEVT_ICONIZE)
278DEFINE_EVENT_TYPE(wxEVT_MAXIMIZE)
279DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_CHANGED)
280DEFINE_EVENT_TYPE(wxEVT_MOUSE_CAPTURE_LOST)
281DEFINE_EVENT_TYPE(wxEVT_PAINT)
282DEFINE_EVENT_TYPE(wxEVT_ERASE_BACKGROUND)
283DEFINE_EVENT_TYPE(wxEVT_NC_PAINT)
284DEFINE_EVENT_TYPE(wxEVT_PAINT_ICON)
285DEFINE_EVENT_TYPE(wxEVT_MENU_OPEN)
286DEFINE_EVENT_TYPE(wxEVT_MENU_CLOSE)
287DEFINE_EVENT_TYPE(wxEVT_MENU_HIGHLIGHT)
288DEFINE_EVENT_TYPE(wxEVT_CONTEXT_MENU)
289DEFINE_EVENT_TYPE(wxEVT_SYS_COLOUR_CHANGED)
290DEFINE_EVENT_TYPE(wxEVT_DISPLAY_CHANGED)
291DEFINE_EVENT_TYPE(wxEVT_SETTING_CHANGED)
292DEFINE_EVENT_TYPE(wxEVT_QUERY_NEW_PALETTE)
293DEFINE_EVENT_TYPE(wxEVT_PALETTE_CHANGED)
294DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_DOWN)
295DEFINE_EVENT_TYPE(wxEVT_JOY_BUTTON_UP)
296DEFINE_EVENT_TYPE(wxEVT_JOY_MOVE)
297DEFINE_EVENT_TYPE(wxEVT_JOY_ZMOVE)
298DEFINE_EVENT_TYPE(wxEVT_DROP_FILES)
299DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
300DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
301DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
302DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
303DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
304
305// Clipboard events
306DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_COPY)
307DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_CUT)
308DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_PASTE)
309
310// Generic command events
311// Note: a click is a higher-level event than button down/up
312DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_CLICK)
313DEFINE_EVENT_TYPE(wxEVT_COMMAND_LEFT_DCLICK)
314DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_CLICK)
315DEFINE_EVENT_TYPE(wxEVT_COMMAND_RIGHT_DCLICK)
316DEFINE_EVENT_TYPE(wxEVT_COMMAND_SET_FOCUS)
317DEFINE_EVENT_TYPE(wxEVT_COMMAND_KILL_FOCUS)
318DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER)
319
320// Help events
321DEFINE_EVENT_TYPE(wxEVT_HELP)
322DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
323
324#endif // wxUSE_GUI
325
326#if wxUSE_BASE
327
328wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
329
330// ============================================================================
331// implementation
332// ============================================================================
333
334// ----------------------------------------------------------------------------
335// event initialization
336// ----------------------------------------------------------------------------
337
338int wxNewEventType()
339{
340 // MT-FIXME
341 static int s_lastUsedEventType = wxEVT_FIRST;
342
343 return s_lastUsedEventType++;
344}
345
346// ----------------------------------------------------------------------------
347// wxEvent
348// ----------------------------------------------------------------------------
349
350/*
351 * General wxWidgets events, covering
352 * all interesting things that might happen (button clicking, resizing,
353 * setting text in widgets, etc.).
354 *
355 * For each completely new event type, derive a new event class.
356 *
357 */
358
359wxEvent::wxEvent(int theId, wxEventType commandType )
360{
361 m_eventType = commandType;
362 m_eventObject = (wxObject *) NULL;
363 m_timeStamp = 0;
364 m_id = theId;
365 m_skipped = false;
366 m_callbackUserData = (wxObject *) NULL;
367 m_isCommandEvent = false;
368 m_propagationLevel = wxEVENT_PROPAGATE_NONE;
369}
370
371wxEvent::wxEvent(const wxEvent &src)
372 : wxObject(src)
373 , m_eventObject(src.m_eventObject)
374 , m_eventType(src.m_eventType)
375 , m_timeStamp(src.m_timeStamp)
376 , m_id(src.m_id)
377 , m_callbackUserData(src.m_callbackUserData)
378 , m_propagationLevel(src.m_propagationLevel)
379 , m_skipped(src.m_skipped)
380 , m_isCommandEvent(src.m_isCommandEvent)
381{
382}
383
384#endif // wxUSE_BASE
385
386#if wxUSE_GUI
387
388/*
389 * Command events
390 *
391 */
392
393#ifdef __VISUALC__
394 // 'this' : used in base member initializer list (for m_commandString)
395 #pragma warning(disable:4355)
396#endif
397
398wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
399 : wxEvent(theId, commandType)
400{
401 m_clientData = (char *) NULL;
402 m_clientObject = (wxClientData *) NULL;
403 m_extraLong = 0;
404 m_commandInt = 0;
405 m_isCommandEvent = true;
406
407 // the command events are propagated upwards by default
408 m_propagationLevel = wxEVENT_PROPAGATE_MAX;
409}
410
411#ifdef __VISUALC__
412 #pragma warning(default:4355)
413#endif
414
415wxString wxCommandEvent::GetString() const
416{
417 if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject)
418 {
419 return m_cmdString;
420 }
421 else
422 {
423#if wxUSE_TEXTCTRL
424 wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl);
425 if ( txt )
426 return txt->GetValue();
427 else
428#endif // wxUSE_TEXTCTRL
429 return m_cmdString;
430 }
431}
432
433/*
434 * UI update events
435 */
436
437#if wxUSE_LONGLONG
438wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
439#endif
440
441long wxUpdateUIEvent::sm_updateInterval = 0;
442
443wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
444
445// Can we update?
446bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
447{
448 // Don't update if we've switched global updating off
449 // and this window doesn't support updates.
450 if (win &&
451 (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
452 ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
453 return false;
454
455 if (sm_updateInterval == -1)
456 return false;
457
458 if (sm_updateInterval == 0)
459 return true;
460
461#if wxUSE_STOPWATCH && wxUSE_LONGLONG
462 wxLongLong now = wxGetLocalTimeMillis();
463 if (now > (sm_lastUpdate + sm_updateInterval))
464 {
465 return true;
466 }
467
468 return false;
469#else
470 // If we don't have wxStopWatch or wxLongLong, we
471 // should err on the safe side and update now anyway.
472 return true;
473#endif
474}
475
476// Reset the update time to provide a delay until the next
477// time we should update
478void wxUpdateUIEvent::ResetUpdateTime()
479{
480#if wxUSE_STOPWATCH && wxUSE_LONGLONG
481 if (sm_updateInterval > 0)
482 {
483 wxLongLong now = wxGetLocalTimeMillis();
484 if (now > (sm_lastUpdate + sm_updateInterval))
485 {
486 sm_lastUpdate = now;
487 }
488 }
489#endif
490}
491
492/*
493 * Scroll events
494 */
495
496wxScrollEvent::wxScrollEvent(wxEventType commandType,
497 int id,
498 int pos,
499 int orient)
500 : wxCommandEvent(commandType, id)
501{
502 m_extraLong = orient;
503 m_commandInt = pos;
504}
505
506/*
507 * ScrollWin events
508 */
509
510wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType,
511 int pos,
512 int orient)
513{
514 m_eventType = commandType;
515 m_extraLong = orient;
516 m_commandInt = pos;
517}
518
519/*
520 * Mouse events
521 *
522 */
523
524wxMouseEvent::wxMouseEvent(wxEventType commandType)
525{
526 m_eventType = commandType;
527
528 m_x = 0;
529 m_y = 0;
530
531 m_leftDown = false;
532 m_middleDown = false;
533 m_rightDown = false;
534 m_aux1Down = false;
535 m_aux2Down = false;
536
537 m_controlDown = false;
538 m_shiftDown = false;
539 m_altDown = false;
540 m_metaDown = false;
541
542 m_clickCount = -1;
543
544 m_wheelRotation = 0;
545 m_wheelDelta = 0;
546 m_linesPerAction = 0;
547 m_wheelAxis = 0;
548}
549
550void wxMouseEvent::Assign(const wxMouseEvent& event)
551{
552 m_eventType = event.m_eventType;
553
554 m_x = event.m_x;
555 m_y = event.m_y;
556
557 m_leftDown = event.m_leftDown;
558 m_middleDown = event.m_middleDown;
559 m_rightDown = event.m_rightDown;
560 m_aux1Down = event.m_aux1Down;
561 m_aux2Down = event.m_aux2Down;
562
563 m_controlDown = event.m_controlDown;
564 m_shiftDown = event.m_shiftDown;
565 m_altDown = event.m_altDown;
566 m_metaDown = event.m_metaDown;
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_shiftDown = false;
753 m_controlDown = false;
754 m_metaDown = false;
755 m_altDown = false;
756 m_keyCode = 0;
757 m_scanCode = 0;
758#if wxUSE_UNICODE
759 m_uniChar = 0;
760#endif
761}
762
763wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt)
764 : wxEvent(evt)
765{
766 m_x = evt.m_x;
767 m_y = evt.m_y;
768
769 m_keyCode = evt.m_keyCode;
770
771 m_controlDown = evt.m_controlDown;
772 m_shiftDown = evt.m_shiftDown;
773 m_altDown = evt.m_altDown;
774 m_metaDown = evt.m_metaDown;
775 m_scanCode = evt.m_scanCode;
776 m_rawCode = evt.m_rawCode;
777 m_rawFlags = evt.m_rawFlags;
778
779#if wxUSE_UNICODE
780 m_uniChar = evt.m_uniChar;
781#endif
782}
783
784wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win)
785{
786 SetEventType(wxEVT_CREATE);
787 SetEventObject(win);
788}
789
790wxWindowDestroyEvent::wxWindowDestroyEvent(wxWindow *win)
791{
792 SetEventType(wxEVT_DESTROY);
793 SetEventObject(win);
794}
795
796wxChildFocusEvent::wxChildFocusEvent(wxWindow *win)
797 : wxCommandEvent(wxEVT_CHILD_FOCUS)
798{
799 SetEventObject(win);
800}
801
802// ----------------------------------------------------------------------------
803// wxHelpEvent
804// ----------------------------------------------------------------------------
805
806/* static */
807wxHelpEvent::Origin wxHelpEvent::GuessOrigin(Origin origin)
808{
809 if ( origin == Origin_Unknown )
810 {
811 // assume that the event comes from the help button if it's not from
812 // keyboard and that pressing F1 always results in the help event
813 origin = wxGetKeyState(WXK_F1) ? Origin_Keyboard : Origin_HelpButton;
814 }
815
816 return origin;
817}
818
819#endif // wxUSE_GUI
820
821
822#if wxUSE_BASE
823
824// ----------------------------------------------------------------------------
825// wxEventHashTable
826// ----------------------------------------------------------------------------
827
828static const int EVENT_TYPE_TABLE_INIT_SIZE = 31; // Not too big not too small...
829
830wxEventHashTable* wxEventHashTable::sm_first = NULL;
831
832wxEventHashTable::wxEventHashTable(const wxEventTable &table)
833 : m_table(table),
834 m_rebuildHash(true)
835{
836 AllocEventTypeTable(EVENT_TYPE_TABLE_INIT_SIZE);
837
838 m_next = sm_first;
839 if (m_next)
840 m_next->m_previous = this;
841 sm_first = this;
842}
843
844wxEventHashTable::~wxEventHashTable()
845{
846 if (m_next)
847 m_next->m_previous = m_previous;
848 if (m_previous)
849 m_previous->m_next = m_next;
850 if (sm_first == this)
851 sm_first = m_next;
852
853 Clear();
854}
855
856void wxEventHashTable::Clear()
857{
858 for ( size_t i = 0; i < m_size; i++ )
859 {
860 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
861 delete eTTnode;
862 }
863
864 delete[] m_eventTypeTable;
865 m_eventTypeTable = NULL;
866
867 m_size = 0;
868}
869
870#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING
871
872// Clear all tables
873void wxEventHashTable::ClearAll()
874{
875 wxEventHashTable* table = sm_first;
876 while (table)
877 {
878 table->Clear();
879 table = table->m_next;
880 }
881}
882
883#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING
884
885bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self)
886{
887 if (m_rebuildHash)
888 {
889 InitHashTable();
890 m_rebuildHash = false;
891 }
892
893 if (!m_eventTypeTable)
894 return false;
895
896 // Find all entries for the given event type.
897 wxEventType eventType = event.GetEventType();
898 const EventTypeTablePointer eTTnode = m_eventTypeTable[eventType % m_size];
899 if (eTTnode && eTTnode->eventType == eventType)
900 {
901 // Now start the search for an event handler
902 // that can handle an event with the given ID.
903 const wxEventTableEntryPointerArray&
904 eventEntryTable = eTTnode->eventEntryTable;
905
906 const size_t count = eventEntryTable.GetCount();
907 for (size_t n = 0; n < count; n++)
908 {
909 if ( wxEvtHandler::
910 ProcessEventIfMatches(*eventEntryTable[n], self, event) )
911 {
912 return true;
913 }
914 }
915 }
916
917 return false;
918}
919
920void wxEventHashTable::InitHashTable()
921{
922 // Loop over the event tables and all its base tables.
923 const wxEventTable *table = &m_table;
924 while (table)
925 {
926 // Retrieve all valid event handler entries
927 const wxEventTableEntry *entry = table->entries;
928 while (entry->m_fn != 0)
929 {
930 // Add the event entry in the Hash.
931 AddEntry(*entry);
932
933 entry++;
934 }
935
936 table = table->baseTable;
937 }
938
939 // Lets free some memory.
940 size_t i;
941 for(i = 0; i < m_size; i++)
942 {
943 EventTypeTablePointer eTTnode = m_eventTypeTable[i];
944 if (eTTnode)
945 {
946 eTTnode->eventEntryTable.Shrink();
947 }
948 }
949}
950
951void wxEventHashTable::AddEntry(const wxEventTableEntry &entry)
952{
953 // This might happen 'accidentally' as the app is exiting
954 if (!m_eventTypeTable)
955 return;
956
957 EventTypeTablePointer *peTTnode = &m_eventTypeTable[entry.m_eventType % m_size];
958 EventTypeTablePointer eTTnode = *peTTnode;
959
960 if (eTTnode)
961 {
962 if (eTTnode->eventType != entry.m_eventType)
963 {
964 // Resize the table!
965 GrowEventTypeTable();
966 // Try again to add it.
967 AddEntry(entry);
968 return;
969 }
970 }
971 else
972 {
973 eTTnode = new EventTypeTable;
974 eTTnode->eventType = entry.m_eventType;
975 *peTTnode = eTTnode;
976 }
977
978 // Fill all hash entries between entry.m_id and entry.m_lastId...
979 eTTnode->eventEntryTable.Add(&entry);
980}
981
982void wxEventHashTable::AllocEventTypeTable(size_t size)
983{
984 m_eventTypeTable = new EventTypeTablePointer[size];
985 memset((void *)m_eventTypeTable, 0, sizeof(EventTypeTablePointer)*size);
986 m_size = size;
987}
988
989void wxEventHashTable::GrowEventTypeTable()
990{
991 size_t oldSize = m_size;
992 EventTypeTablePointer *oldEventTypeTable = m_eventTypeTable;
993
994 // TODO: Search the most optimal grow sequence
995 AllocEventTypeTable(/* GetNextPrime(oldSize) */oldSize*2+1);
996
997 for ( size_t i = 0; i < oldSize; /* */ )
998 {
999 EventTypeTablePointer eTToldNode = oldEventTypeTable[i];
1000 if (eTToldNode)
1001 {
1002 EventTypeTablePointer *peTTnode = &m_eventTypeTable[eTToldNode->eventType % m_size];
1003 EventTypeTablePointer eTTnode = *peTTnode;
1004
1005 // Check for collision, we don't want any.
1006 if (eTTnode)
1007 {
1008 GrowEventTypeTable();
1009 continue; // Don't increment the counter,
1010 // as we still need to add this element.
1011 }
1012 else
1013 {
1014 // Get the old value and put it in the new table.
1015 *peTTnode = oldEventTypeTable[i];
1016 }
1017 }
1018
1019 i++;
1020 }
1021
1022 delete[] oldEventTypeTable;
1023}
1024
1025// ----------------------------------------------------------------------------
1026// wxEvtHandler
1027// ----------------------------------------------------------------------------
1028
1029/*
1030 * Event handler
1031 */
1032
1033wxEvtHandler::wxEvtHandler()
1034{
1035 m_nextHandler = (wxEvtHandler *) NULL;
1036 m_previousHandler = (wxEvtHandler *) NULL;
1037 m_enabled = true;
1038 m_dynamicEvents = (wxList *) NULL;
1039 m_pendingEvents = (wxList *) NULL;
1040
1041 // no client data (yet)
1042 m_clientData = NULL;
1043 m_clientDataType = wxClientData_None;
1044}
1045
1046wxEvtHandler::~wxEvtHandler()
1047{
1048 // Takes itself out of the list of handlers
1049 if (m_previousHandler)
1050 m_previousHandler->m_nextHandler = m_nextHandler;
1051
1052 if (m_nextHandler)
1053 m_nextHandler->m_previousHandler = m_previousHandler;
1054
1055 if (m_dynamicEvents)
1056 {
1057 for ( wxList::iterator it = m_dynamicEvents->begin(),
1058 end = m_dynamicEvents->end();
1059 it != end;
1060 ++it )
1061 {
1062 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
1063
1064#if wxUSE_WEAKREF
1065 // Remove ourselves from sink destructor notifications
1066 // (this has usually been been done, in wxTrackable destructor)
1067 wxEvtHandler *eventSink = entry->m_eventSink;
1068 if ( eventSink )
1069 {
1070 wxEventConnectionRef * const
1071 evtConnRef = FindRefInTrackerList(eventSink);
1072 if ( evtConnRef )
1073 {
1074 eventSink->RemoveNode(evtConnRef);
1075 delete evtConnRef;
1076 }
1077 }
1078#endif // wxUSE_WEAKREF
1079
1080 if (entry->m_callbackUserData)
1081 delete entry->m_callbackUserData;
1082 delete entry;
1083 }
1084 delete m_dynamicEvents;
1085 };
1086
1087 if (m_pendingEvents)
1088 m_pendingEvents->DeleteContents(true);
1089 delete m_pendingEvents;
1090
1091 // Remove us from wxPendingEvents if necessary.
1092 if ( wxPendingEvents )
1093 {
1094#if wxUSE_THREADS
1095 if (wxPendingEventsLocker)
1096 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1097#endif
1098
1099 if ( wxPendingEvents->DeleteObject(this) )
1100 {
1101 // check that we were present only once in the list
1102 wxASSERT_MSG( !wxPendingEvents->Find(this),
1103 "Handler occurs twice in wxPendingEvents list" );
1104 }
1105 //else: we weren't in this list at all, it's ok
1106
1107#if wxUSE_THREADS
1108 if (wxPendingEventsLocker)
1109 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1110#endif
1111 }
1112
1113 // we only delete object data, not untyped
1114 if ( m_clientDataType == wxClientData_Object )
1115 delete m_clientObject;
1116}
1117
1118#if wxUSE_THREADS
1119
1120bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event)
1121{
1122 // check that we are really in a child thread
1123 wxASSERT_MSG( !wxThread::IsMain(),
1124 wxT("use ProcessEvent() in main thread") );
1125
1126 AddPendingEvent(event);
1127
1128 return true;
1129}
1130
1131#endif // wxUSE_THREADS
1132
1133void wxEvtHandler::QueueEvent(wxEvent *event)
1134{
1135 wxCHECK_RET( event, "NULL event can't be posted" );
1136
1137 // 1) Add this event to our list of pending events
1138 wxENTER_CRIT_SECT( m_pendingEventsLock );
1139
1140 if ( !m_pendingEvents )
1141 m_pendingEvents = new wxList;
1142
1143 m_pendingEvents->Append(event);
1144
1145 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1146
1147 // 2) Add this event handler to list of event handlers that
1148 // have pending events.
1149
1150 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1151
1152 if ( !wxPendingEvents )
1153 wxPendingEvents = new wxList;
1154 if ( !wxPendingEvents->Find(this) )
1155 wxPendingEvents->Append(this);
1156
1157 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1158
1159 // 3) Inform the system that new pending events are somewhere,
1160 // and that these should be processed in idle time.
1161 wxWakeUpIdle();
1162}
1163
1164void wxEvtHandler::ProcessPendingEvents()
1165{
1166 wxENTER_CRIT_SECT( m_pendingEventsLock );
1167
1168 // this method is only called by wxApp if this handler does have
1169 // pending events
1170 wxCHECK_RET( m_pendingEvents && !m_pendingEvents->IsEmpty(),
1171 "should have pending events if called" );
1172
1173 wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
1174 wxEventPtr event(wx_static_cast(wxEvent *, node->GetData()));
1175
1176 // it's important we remove event from list before processing it, else a
1177 // nested event loop, for example from a modal dialog, might process the
1178 // same event again.
1179 m_pendingEvents->Erase(node);
1180
1181 // if there are no more pending events left, we don't need to stay in this
1182 // list
1183 if ( m_pendingEvents->IsEmpty() )
1184 {
1185#if wxUSE_THREADS
1186 if (wxPendingEventsLocker)
1187 wxENTER_CRIT_SECT(*wxPendingEventsLocker);
1188#endif
1189 wxPendingEvents->DeleteObject(this);
1190#if wxUSE_THREADS
1191 if (wxPendingEventsLocker)
1192 wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
1193#endif
1194 }
1195
1196 wxLEAVE_CRIT_SECT( m_pendingEventsLock );
1197
1198 ProcessEvent(*event);
1199
1200 // careful: this object could have been deleted by the event handler
1201 // executed by the above ProcessEvent() call, so we can't access any fields
1202 // of this object any more
1203}
1204
1205/*
1206 * Event table stuff
1207 */
1208/* static */ bool
1209wxEvtHandler::ProcessEventIfMatches(const wxEventTableEntryBase& entry,
1210 wxEvtHandler *handler,
1211 wxEvent& event)
1212{
1213 int tableId1 = entry.m_id,
1214 tableId2 = entry.m_lastId;
1215
1216 // match only if the event type is the same and the id is either -1 in
1217 // the event table (meaning "any") or the event id matches the id
1218 // specified in the event table either exactly or by falling into
1219 // range between first and last
1220 if ((tableId1 == wxID_ANY) ||
1221 (tableId2 == wxID_ANY && tableId1 == event.GetId()) ||
1222 (tableId2 != wxID_ANY &&
1223 (event.GetId() >= tableId1 && event.GetId() <= tableId2)))
1224 {
1225 event.Skip(false);
1226 event.m_callbackUserData = entry.m_callbackUserData;
1227
1228#if wxUSE_EXCEPTIONS
1229 if ( wxTheApp )
1230 {
1231 // call the handler via wxApp method which allows the user to catch
1232 // any exceptions which may be thrown by any handler in the program
1233 // in one place
1234 wxTheApp->HandleEvent(handler, (wxEventFunction)entry.m_fn, event);
1235 }
1236 else
1237#endif // wxUSE_EXCEPTIONS
1238 {
1239 // no need for an extra virtual function call
1240 (handler->*((wxEventFunction) (entry.m_fn)))(event);
1241 }
1242
1243 if (!event.GetSkipped())
1244 return true;
1245 }
1246
1247 return false;
1248}
1249
1250bool wxEvtHandler::TryParent(wxEvent& event)
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 if ( wxTheApp )
1271 {
1272 int rc = wxTheApp->FilterEvent(event);
1273 if ( rc != -1 )
1274 {
1275 wxASSERT_MSG( rc == 1 || rc == 0,
1276 _T("unexpected wxApp::FilterEvent return value") );
1277
1278 return rc != 0;
1279 }
1280 //else: proceed normally
1281 }
1282
1283 // An event handler can be enabled or disabled
1284 if ( GetEvtHandlerEnabled() )
1285 {
1286 // if we have a validator, it has higher priority than our own event
1287 // table
1288 if ( TryValidator(event) )
1289 return true;
1290
1291 // Handle per-instance dynamic event tables first
1292 if ( m_dynamicEvents && SearchDynamicEventTable(event) )
1293 return true;
1294
1295 // Then static per-class event tables
1296 if ( GetEventHashTable().HandleEvent(event, this) )
1297 return true;
1298 }
1299
1300 // Try going down the event handler chain
1301 if ( GetNextHandler() )
1302 {
1303 // notice that we shouldn't let the parent have the event even if the
1304 // next handler does not process it because it will have already passed
1305 // it to the parent in this case
1306 return GetNextHandler()->ProcessEvent(event);
1307 }
1308
1309 // Finally propagate the event upwards the window chain and/or to the
1310 // application object as necessary
1311 return TryParent(event);
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 ( ProcessEventIfMatches(entry, this, event) )
1360 return true;
1361 }
1362 }
1363
1364 return false;
1365}
1366
1367void wxEvtHandler::Connect( int id, int lastId,
1368 int eventType,
1369 wxObjectEventFunction func,
1370 wxObject *userData,
1371 wxEvtHandler* eventSink )
1372{
1373 wxDynamicEventTableEntry *entry =
1374 new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink);
1375
1376 if (!m_dynamicEvents)
1377 m_dynamicEvents = new wxList;
1378
1379 // Insert at the front of the list so most recent additions are found first
1380 m_dynamicEvents->Insert( (wxObject*) entry );
1381
1382#if wxUSE_WEAKREF
1383 // Make sure we get to know when a sink is destroyed
1384 if ( eventSink && eventSink != this )
1385 {
1386 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1387 if ( evtConnRef )
1388 evtConnRef->IncRef( );
1389 else
1390 evtConnRef = new wxEventConnectionRef(this, eventSink);
1391 }
1392#endif // wxUSE_WEAKREF
1393}
1394
1395bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
1396 wxObjectEventFunction func,
1397 wxObject *userData,
1398 wxEvtHandler* eventSink )
1399{
1400 if (!m_dynamicEvents)
1401 return false;
1402
1403#if wxUSE_WEAKREF
1404 // Remove connection from tracker node (wxEventConnectionRef)
1405 if ( eventSink && eventSink != this )
1406 {
1407 wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
1408 if ( evtConnRef )
1409 evtConnRef->DecRef();
1410 }
1411#endif // wxUSE_WEAKREF
1412
1413 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1414 while (node)
1415 {
1416 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1417
1418 if ((entry->m_id == id) &&
1419 ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) &&
1420 ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
1421 ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
1422 ((entry->m_eventSink == eventSink) || (eventSink == (wxEvtHandler*)NULL)) &&
1423 ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
1424 {
1425 if (entry->m_callbackUserData)
1426 delete entry->m_callbackUserData;
1427 m_dynamicEvents->Erase( node );
1428 delete entry;
1429 return true;
1430 }
1431 node = node->GetNext();
1432 }
1433 return false;
1434}
1435
1436bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
1437{
1438 wxCHECK_MSG( m_dynamicEvents, false,
1439 wxT("caller should check that we have dynamic events") );
1440
1441 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
1442 while (node)
1443 {
1444 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1445
1446 // get next node before (maybe) calling the event handler as it could
1447 // call Disconnect() invalidating the current node
1448 node = node->GetNext();
1449
1450 if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))
1451 {
1452 wxEvtHandler *handler = entry->m_eventSink ? entry->m_eventSink
1453 : this;
1454 if ( ProcessEventIfMatches(*entry, handler, event) )
1455 return true;
1456 }
1457 }
1458
1459 return false;
1460}
1461
1462void wxEvtHandler::DoSetClientObject( wxClientData *data )
1463{
1464 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1465 wxT("can't have both object and void client data") );
1466
1467 if ( m_clientObject )
1468 delete m_clientObject;
1469
1470 m_clientObject = data;
1471 m_clientDataType = wxClientData_Object;
1472}
1473
1474wxClientData *wxEvtHandler::DoGetClientObject() const
1475{
1476 // it's not an error to call GetClientObject() on a window which doesn't
1477 // have client data at all - NULL will be returned
1478 wxASSERT_MSG( m_clientDataType != wxClientData_Void,
1479 wxT("this window doesn't have object client data") );
1480
1481 return m_clientObject;
1482}
1483
1484void wxEvtHandler::DoSetClientData( void *data )
1485{
1486 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1487 wxT("can't have both object and void client data") );
1488
1489 m_clientData = data;
1490 m_clientDataType = wxClientData_Void;
1491}
1492
1493void *wxEvtHandler::DoGetClientData() const
1494{
1495 // it's not an error to call GetClientData() on a window which doesn't have
1496 // client data at all - NULL will be returned
1497 wxASSERT_MSG( m_clientDataType != wxClientData_Object,
1498 wxT("this window doesn't have void client data") );
1499
1500 return m_clientData;
1501}
1502
1503#if wxUSE_WEAKREF
1504// A helper to find an wxEventConnectionRef object
1505wxEventConnectionRef *
1506wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink)
1507{
1508 for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt )
1509 {
1510 // we only want wxEventConnectionRef nodes here
1511 wxEventConnectionRef *evtConnRef = node->ToEventConnection();
1512 if ( evtConnRef && evtConnRef->m_src == this )
1513 {
1514 wxASSERT( evtConnRef->m_sink==eventSink );
1515 return evtConnRef;
1516 }
1517 }
1518
1519 return NULL;
1520}
1521
1522void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink )
1523{
1524 wxASSERT(m_dynamicEvents);
1525
1526 // remove all connections with this sink
1527 wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt;
1528 while (node)
1529 {
1530 wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
1531 node_nxt = node->GetNext();
1532
1533 if ( entry->m_eventSink==sink )
1534 {
1535 if (entry->m_callbackUserData)
1536 delete entry->m_callbackUserData;
1537 m_dynamicEvents->Erase( node );
1538 delete entry;
1539 }
1540 node = node_nxt;
1541 }
1542}
1543#endif // wxUSE_WEAKREF
1544
1545#endif // wxUSE_BASE
1546
1547#if wxUSE_GUI
1548
1549// Find a window with the focus, that is also a descendant of the given window.
1550// This is used to determine the window to initially send commands to.
1551wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
1552{
1553 // Process events starting with the window with the focus, if any.
1554 wxWindow* focusWin = wxWindow::FindFocus();
1555 wxWindow* win = focusWin;
1556
1557 // Check if this is a descendant of this frame.
1558 // If not, win will be set to NULL.
1559 while (win)
1560 {
1561 if (win == ancestor)
1562 break;
1563 else
1564 win = win->GetParent();
1565 }
1566 if (win == (wxWindow*) NULL)
1567 focusWin = (wxWindow*) NULL;
1568
1569 return focusWin;
1570}
1571
1572// ----------------------------------------------------------------------------
1573// wxEventBlocker
1574// ----------------------------------------------------------------------------
1575
1576wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
1577{
1578 wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
1579
1580 m_window = win;
1581
1582 Block(type);
1583 m_window->PushEventHandler(this);
1584}
1585
1586wxEventBlocker::~wxEventBlocker()
1587{
1588 wxEvtHandler *popped = m_window->PopEventHandler(false);
1589 wxCHECK_RET(popped == this,
1590 wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
1591}
1592
1593bool wxEventBlocker::ProcessEvent(wxEvent& event)
1594{
1595 // should this event be blocked?
1596 for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
1597 {
1598 wxEventType t = (wxEventType)m_eventsToBlock[i];
1599 if ( t == wxEVT_ANY || t == event.GetEventType() )
1600 return true; // yes, it should: mark this event as processed
1601 }
1602
1603 return false;
1604}
1605
1606#endif // wxUSE_GUI
wxWidgets (Impactor)