X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/aea37008b79b8415dc25156f843287827b62ce3a..0f9b48d1e1535f8b92a73031be8cceff39123d27:/src/common/event.cpp?ds=sidebyside diff --git a/src/common/event.cpp b/src/common/event.cpp index 385f516040..9e8fbdf508 100644 --- a/src/common/event.cpp +++ b/src/common/event.cpp @@ -25,6 +25,7 @@ #endif #include "wx/event.h" +#include "wx/evtloop.h" #ifndef WX_PRECOMP #include "wx/list.h" @@ -34,6 +35,7 @@ #include "wx/module.h" #if wxUSE_GUI + #include "wx/window.h" #include "wx/control.h" #include "wx/dc.h" #include "wx/textctrl.h" @@ -41,6 +43,15 @@ #endif // wxUSE_GUI #endif +#include "wx/thread.h" + +#if wxUSE_BASE + #include "wx/ptr_scpd.h" + + wxDECLARE_SCOPED_PTR(wxEvent, wxEventPtr) + wxDEFINE_SCOPED_PTR(wxEvent, wxEventPtr) +#endif // wxUSE_BASE + // ---------------------------------------------------------------------------- // wxWin macros // ---------------------------------------------------------------------------- @@ -48,10 +59,10 @@ #if wxUSE_BASE IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject) IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject) + IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent) #endif // wxUSE_BASE #if wxUSE_GUI - IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent) IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent) IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent) IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent) @@ -107,37 +118,40 @@ const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] = { DECLARE_EVENT_TABLE_ENTRY(wxEVT_NULL, 0, 0, (wxObjectEventFunction)NULL, NULL) }; -#ifdef __WXDEBUG__ -// Clear up event hash table contents or we can get problems -// when C++ is cleaning up the static object +// wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors +// leaked, so we need to manually clean up all event tables before checking for +// the memory leaks when using it, however this breaks re-initializing the +// library (i.e. repeated calls to wxInitialize/wxUninitialize) because the +// event tables won't be rebuilt the next time, so disable this by default +#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING + class wxEventTableEntryModule: public wxModule { -DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule) public: - wxEventTableEntryModule() {} - bool OnInit() { return true; } - void OnExit() - { - wxEventHashTable::ClearAll(); - } + wxEventTableEntryModule() { } + virtual bool OnInit() { return true; } + virtual void OnExit() { wxEventHashTable::ClearAll(); } + + DECLARE_DYNAMIC_CLASS(wxEventTableEntryModule) }; + IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule) -#endif + +#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING // ---------------------------------------------------------------------------- // global variables // ---------------------------------------------------------------------------- -// To put pending event handlers -wxList *wxPendingEvents = (wxList *)NULL; +// List containing event handlers with pending events (each handler can occur +// at most once here) +wxList *wxPendingEvents = NULL; #if wxUSE_THREADS // protects wxPendingEvents list - wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL; + wxCriticalSection *wxPendingEventsLocker = NULL; #endif -#if !WXWIN_COMPATIBILITY_EVENT_TYPES - // common event types are defined here, other event types are defined by the // components which use them @@ -147,15 +161,12 @@ const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000; DEFINE_EVENT_TYPE(wxEVT_NULL) DEFINE_EVENT_TYPE(wxEVT_IDLE) DEFINE_EVENT_TYPE(wxEVT_SOCKET) - -#endif // !WXWIN_COMPATIBILITY_EVENT_TYPES +DEFINE_EVENT_TYPE(wxEVT_TIMER) #endif // wxUSE_BASE #if wxUSE_GUI -#if !WXWIN_COMPATIBILITY_EVENT_TYPES - DEFINE_EVENT_TYPE(wxEVT_COMMAND_BUTTON_CLICKED) DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHECKBOX_CLICKED) DEFINE_EVENT_TYPE(wxEVT_COMMAND_CHOICE_SELECTED) @@ -172,9 +183,8 @@ DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED) DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED) DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER) DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED) - -// Sockets and timers send events, too -DEFINE_EVENT_TYPE(wxEVT_TIMER) +DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED) +DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED) // Mouse event types DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN) @@ -193,6 +203,12 @@ DEFINE_EVENT_TYPE(wxEVT_SET_FOCUS) DEFINE_EVENT_TYPE(wxEVT_KILL_FOCUS) DEFINE_EVENT_TYPE(wxEVT_CHILD_FOCUS) DEFINE_EVENT_TYPE(wxEVT_MOUSEWHEEL) +DEFINE_EVENT_TYPE(wxEVT_AUX1_DOWN) +DEFINE_EVENT_TYPE(wxEVT_AUX1_UP) +DEFINE_EVENT_TYPE(wxEVT_AUX1_DCLICK) +DEFINE_EVENT_TYPE(wxEVT_AUX2_DOWN) +DEFINE_EVENT_TYPE(wxEVT_AUX2_UP) +DEFINE_EVENT_TYPE(wxEVT_AUX2_DCLICK) // Non-client mouse events DEFINE_EVENT_TYPE(wxEVT_NC_LEFT_DOWN) @@ -247,12 +263,13 @@ DEFINE_EVENT_TYPE(wxEVT_SIZE) DEFINE_EVENT_TYPE(wxEVT_SIZING) DEFINE_EVENT_TYPE(wxEVT_MOVE) DEFINE_EVENT_TYPE(wxEVT_MOVING) +DEFINE_EVENT_TYPE(wxEVT_MOVE_START) +DEFINE_EVENT_TYPE(wxEVT_MOVE_END) DEFINE_EVENT_TYPE(wxEVT_CLOSE_WINDOW) DEFINE_EVENT_TYPE(wxEVT_END_SESSION) DEFINE_EVENT_TYPE(wxEVT_QUERY_END_SESSION) DEFINE_EVENT_TYPE(wxEVT_HIBERNATE) DEFINE_EVENT_TYPE(wxEVT_ACTIVATE_APP) -DEFINE_EVENT_TYPE(wxEVT_POWER) DEFINE_EVENT_TYPE(wxEVT_ACTIVATE) DEFINE_EVENT_TYPE(wxEVT_CREATE) DEFINE_EVENT_TYPE(wxEVT_DESTROY) @@ -304,12 +321,12 @@ DEFINE_EVENT_TYPE(wxEVT_COMMAND_ENTER) DEFINE_EVENT_TYPE(wxEVT_HELP) DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP) -#endif // !WXWIN_COMPATIBILITY_EVENT_TYPES - #endif // wxUSE_GUI #if wxUSE_BASE +wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL; + // ============================================================================ // implementation // ============================================================================ @@ -380,9 +397,6 @@ wxEvent::wxEvent(const wxEvent &src) wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId) : wxEvent(theId, commandType) -#if WXWIN_COMPATIBILITY_2_4 - , m_commandString(this) -#endif { m_clientData = (char *) NULL; m_clientObject = (wxClientData *) NULL; @@ -400,13 +414,15 @@ wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId) wxString wxCommandEvent::GetString() const { - if(m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject) + if (m_eventType != wxEVT_COMMAND_TEXT_UPDATED || !m_eventObject) + { return m_cmdString; + } else { #if wxUSE_TEXTCTRL wxTextCtrl *txt = wxDynamicCast(m_eventObject, wxTextCtrl); - if(txt) + if ( txt ) return txt->GetValue(); else #endif // wxUSE_TEXTCTRL @@ -473,25 +489,6 @@ void wxUpdateUIEvent::ResetUpdateTime() #endif } -/* - * Idle events - */ - -wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL; - -// Can we send an idle event? -bool wxIdleEvent::CanSend(wxWindow* win) -{ - // Don't update if we've switched global updating off - // and this window doesn't support updates. - if (win && - (GetMode() == wxIDLE_PROCESS_SPECIFIED && - ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0))) - return false; - - return true; -} - /* * Scroll events */ @@ -527,15 +524,23 @@ wxScrollWinEvent::wxScrollWinEvent(wxEventType commandType, wxMouseEvent::wxMouseEvent(wxEventType commandType) { m_eventType = commandType; - m_metaDown = false; - m_altDown = false; - m_controlDown = false; - m_shiftDown = false; - m_leftDown = false; - m_rightDown = false; - m_middleDown = false; + m_x = 0; m_y = 0; + + m_leftDown = false; + m_middleDown = false; + m_rightDown = false; + m_aux1Down = false; + m_aux2Down = false; + + m_controlDown = false; + m_shiftDown = false; + m_altDown = false; + m_metaDown = false; + + m_clickCount = -1; + m_wheelRotation = 0; m_wheelDelta = 0; m_linesPerAction = 0; @@ -552,6 +557,8 @@ void wxMouseEvent::Assign(const wxMouseEvent& event) m_leftDown = event.m_leftDown; m_middleDown = event.m_middleDown; m_rightDown = event.m_rightDown; + m_aux1Down = event.m_aux1Down; + m_aux2Down = event.m_aux2Down; m_controlDown = event.m_controlDown; m_shiftDown = event.m_shiftDown; @@ -574,7 +581,8 @@ bool wxMouseEvent::ButtonDClick(int but) const // fall through case wxMOUSE_BTN_ANY: - return (LeftDClick() || MiddleDClick() || RightDClick()); + return (LeftDClick() || MiddleDClick() || RightDClick() || + Aux1DClick() || Aux2DClick()); case wxMOUSE_BTN_LEFT: return LeftDClick(); @@ -584,6 +592,12 @@ bool wxMouseEvent::ButtonDClick(int but) const case wxMOUSE_BTN_RIGHT: return RightDClick(); + + case wxMOUSE_BTN_AUX1: + return Aux1DClick(); + + case wxMOUSE_BTN_AUX2: + return Aux2DClick(); } } @@ -597,7 +611,8 @@ bool wxMouseEvent::ButtonDown(int but) const // fall through case wxMOUSE_BTN_ANY: - return (LeftDown() || MiddleDown() || RightDown()); + return (LeftDown() || MiddleDown() || RightDown() || + Aux1Down() || Aux2Down()); case wxMOUSE_BTN_LEFT: return LeftDown(); @@ -607,6 +622,12 @@ bool wxMouseEvent::ButtonDown(int but) const case wxMOUSE_BTN_RIGHT: return RightDown(); + + case wxMOUSE_BTN_AUX1: + return Aux1Down(); + + case wxMOUSE_BTN_AUX2: + return Aux2Down(); } } @@ -620,7 +641,8 @@ bool wxMouseEvent::ButtonUp(int but) const // fall through case wxMOUSE_BTN_ANY: - return (LeftUp() || MiddleUp() || RightUp()); + return (LeftUp() || MiddleUp() || RightUp() || + Aux1Up() || Aux2Up()); case wxMOUSE_BTN_LEFT: return LeftUp(); @@ -630,6 +652,12 @@ bool wxMouseEvent::ButtonUp(int but) const case wxMOUSE_BTN_RIGHT: return RightUp(); + + case wxMOUSE_BTN_AUX1: + return Aux1Up(); + + case wxMOUSE_BTN_AUX2: + return Aux2Up(); } } @@ -655,6 +683,12 @@ bool wxMouseEvent::Button(int but) const case wxMOUSE_BTN_RIGHT: return RightDown() || RightUp() || RightDClick(); + + case wxMOUSE_BTN_AUX1: + return Aux1Down() || Aux1Up() || Aux1DClick(); + + case wxMOUSE_BTN_AUX2: + return Aux2Down() || Aux2Up() || Aux2DClick(); } } @@ -667,7 +701,7 @@ bool wxMouseEvent::ButtonIsDown(int but) const // fall through case wxMOUSE_BTN_ANY: - return LeftIsDown() || MiddleIsDown() || RightIsDown(); + return LeftIsDown() || MiddleIsDown() || RightIsDown() || Aux1Down() || Aux2Down(); case wxMOUSE_BTN_LEFT: return LeftIsDown(); @@ -677,12 +711,18 @@ bool wxMouseEvent::ButtonIsDown(int but) const case wxMOUSE_BTN_RIGHT: return RightIsDown(); + + case wxMOUSE_BTN_AUX1: + return Aux1IsDown(); + + case wxMOUSE_BTN_AUX2: + return Aux2IsDown(); } } int wxMouseEvent::GetButton() const { - for ( int i = 1; i <= 3; i++ ) + for ( int i = 1; i < wxMOUSE_BTN_MAX; i++ ) { if ( Button(i) ) { @@ -741,13 +781,6 @@ wxKeyEvent::wxKeyEvent(const wxKeyEvent& evt) #endif } -#if WXWIN_COMPATIBILITY_2_6 -long wxKeyEvent::KeyCode() const -{ - return m_keyCode; -} -#endif // WXWIN_COMPATIBILITY_2_6 - wxWindowCreateEvent::wxWindowCreateEvent(wxWindow *win) { SetEventType(wxEVT_CREATE); @@ -822,25 +855,20 @@ wxEventHashTable::~wxEventHashTable() void wxEventHashTable::Clear() { - size_t i; - for(i = 0; i < m_size; i++) + for ( size_t i = 0; i < m_size; i++ ) { EventTypeTablePointer eTTnode = m_eventTypeTable[i]; - if (eTTnode) - { - delete eTTnode; - } + delete eTTnode; } - // Necessary in order to not invoke the - // overloaded delete operator when statics are cleaned up - if (m_eventTypeTable) - delete[] m_eventTypeTable; - + delete[] m_eventTypeTable; m_eventTypeTable = NULL; + m_size = 0; } +#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING + // Clear all tables void wxEventHashTable::ClearAll() { @@ -852,6 +880,8 @@ void wxEventHashTable::ClearAll() } } +#endif // __WXDEBUG__ && wxUSE_MEMORY_TRACING + bool wxEventHashTable::HandleEvent(wxEvent &event, wxEvtHandler *self) { if (m_rebuildHash) @@ -992,7 +1022,6 @@ void wxEventHashTable::GrowEventTypeTable() delete[] oldEventTypeTable; } - // ---------------------------------------------------------------------------- // wxEvtHandler // ---------------------------------------------------------------------------- @@ -1003,17 +1032,14 @@ void wxEventHashTable::GrowEventTypeTable() wxEvtHandler::wxEvtHandler() { + m_beingDeleted = false; + m_nextHandler = (wxEvtHandler *) NULL; m_previousHandler = (wxEvtHandler *) NULL; m_enabled = true; m_dynamicEvents = (wxList *) NULL; m_pendingEvents = (wxList *) NULL; -#if wxUSE_THREADS -# if !defined(__VISAGECPP__) - m_eventsLocker = new wxCriticalSection; -# endif -#endif - + // no client data (yet) m_clientData = NULL; m_clientDataType = wxClientData_None; @@ -1021,6 +1047,8 @@ wxEvtHandler::wxEvtHandler() wxEvtHandler::~wxEvtHandler() { + m_beingDeleted = true; + // Takes itself out of the list of handlers if (m_previousHandler) m_previousHandler->m_nextHandler = m_nextHandler; @@ -1030,15 +1058,25 @@ wxEvtHandler::~wxEvtHandler() if (m_dynamicEvents) { - wxList::iterator it = m_dynamicEvents->begin(), - en = m_dynamicEvents->end(); - for (;it != en; ++it) + for ( wxList::iterator it = m_dynamicEvents->begin(), + end = m_dynamicEvents->end(); + it != end; + ++it ) { -#if WXWIN_COMPATIBILITY_EVENT_TYPES - wxEventTableEntry *entry = (wxEventTableEntry*)*it; -#else // !WXWIN_COMPATIBILITY_EVENT_TYPES wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it; -#endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES + + // Remove ourselves from sink destructor notifications + wxEvtHandler *eventSink = entry->m_eventSink; + if ( eventSink ) + { + wxEventConnectionRef * const + evtConnRef = FindRefInTrackerList(eventSink); + if ( evtConnRef ) + { + eventSink->RemoveNode(evtConnRef); + delete evtConnRef; + } + } if (entry->m_callbackUserData) delete entry->m_callbackUserData; @@ -1048,26 +1086,40 @@ wxEvtHandler::~wxEvtHandler() }; if (m_pendingEvents) + { + // At this time, we could still be used from other threads. + // Continue to use sync objects. + wxENTER_CRIT_SECT( m_pendingEventsLock ); + m_pendingEvents->DeleteContents(true); - delete m_pendingEvents; - -#if wxUSE_THREADS -# if !defined(__VISAGECPP__) - delete m_eventsLocker; -# endif + delete m_pendingEvents; + m_pendingEvents = NULL; + + wxLEAVE_CRIT_SECT( m_pendingEventsLock ); + } // Remove us from wxPendingEvents if necessary. - if(wxPendingEventsLocker) - wxENTER_CRIT_SECT(*wxPendingEventsLocker); if ( wxPendingEvents ) { - // Delete all occurences of this from the list of pending events - while (wxPendingEvents->DeleteObject(this)) { } // Do nothing - } - if(wxPendingEventsLocker) - wxLEAVE_CRIT_SECT(*wxPendingEventsLocker); +#if wxUSE_THREADS + if (wxPendingEventsLocker) + wxENTER_CRIT_SECT(*wxPendingEventsLocker); #endif + if ( wxPendingEvents->DeleteObject(this) ) + { + // check that we were present only once in the list + wxASSERT_MSG( !wxPendingEvents->Find(this), + "Handler occurs twice in wxPendingEvents list" ); + } + //else: we weren't in this list at all, it's ok + +#if wxUSE_THREADS + if (wxPendingEventsLocker) + wxLEAVE_CRIT_SECT(*wxPendingEventsLocker); +#endif + } + // we only delete object data, not untyped if ( m_clientDataType == wxClientData_Object ) delete m_clientObject; @@ -1075,7 +1127,7 @@ wxEvtHandler::~wxEvtHandler() #if wxUSE_THREADS -bool wxEvtHandler::ProcessThreadEvent(wxEvent& event) +bool wxEvtHandler::ProcessThreadEvent(const wxEvent& event) { // check that we are really in a child thread wxASSERT_MSG( !wxThread::IsMain(), @@ -1086,35 +1138,24 @@ bool wxEvtHandler::ProcessThreadEvent(wxEvent& event) return true; } -void wxEvtHandler::ClearEventLocker() -{ -#if !defined(__VISAGECPP__) - delete m_eventsLocker; - m_eventsLocker = NULL; -#endif -} - #endif // wxUSE_THREADS -void wxEvtHandler::AddPendingEvent(wxEvent& event) +void wxEvtHandler::QueueEvent(wxEvent *event) { - // 1) Add event to list of pending events of this event handler + wxCHECK_RET( event, "NULL event can't be posted" ); - wxEvent *eventCopy = event.Clone(); + // Catch the situation where destructor is already invoked (in another thread) + if( m_beingDeleted ) return; - // we must be able to copy the events here so the event class must - // implement Clone() properly instead of just providing a NULL stab for it - wxCHECK_RET( eventCopy, - _T("events of this type aren't supposed to be posted") ); - - wxENTER_CRIT_SECT( Lock() ); + // 1) Add this event to our list of pending events + wxENTER_CRIT_SECT( m_pendingEventsLock ); if ( !m_pendingEvents ) m_pendingEvents = new wxList; - m_pendingEvents->Append(eventCopy); + m_pendingEvents->Append(event); - wxLEAVE_CRIT_SECT( Lock() ); + wxLEAVE_CRIT_SECT( m_pendingEventsLock ); // 2) Add this event handler to list of event handlers that // have pending events. @@ -1123,7 +1164,8 @@ void wxEvtHandler::AddPendingEvent(wxEvent& event) if ( !wxPendingEvents ) wxPendingEvents = new wxList; - wxPendingEvents->Append(this); + if ( !wxPendingEvents->Find(this) ) + wxPendingEvents->Append(this); wxLEAVE_CRIT_SECT(*wxPendingEventsLocker); @@ -1134,43 +1176,54 @@ void wxEvtHandler::AddPendingEvent(wxEvent& event) void wxEvtHandler::ProcessPendingEvents() { - // this method is only called by wxApp if this handler does have - // pending events - wxCHECK_RET( m_pendingEvents, - wxT("Please call wxApp::ProcessPendingEvents() instead") ); + wxENTER_CRIT_SECT( m_pendingEventsLock ); + + // This method is only called by wxApp if this handler does have + // pending events, but it happens occasionally when using multi- + // threading and we don't want a crash due to that. + if( !m_pendingEvents ) + { + wxLEAVE_CRIT_SECT( m_pendingEventsLock ); + return; + } - wxENTER_CRIT_SECT( Lock() ); - - // we leave the loop once we have processed all events that were present at - // the start of ProcessPendingEvents because otherwise we could get into - // infinite loop if the pending event handler execution resulted in another - // event being posted - size_t n = m_pendingEvents->size(); - for ( wxList::compatibility_iterator node = m_pendingEvents->GetFirst(); - node; - node = m_pendingEvents->GetFirst() ) + if( m_pendingEvents->IsEmpty() ) { - wxEvent *event = (wxEvent *)node->GetData(); - - // It's importan we remove event from list before processing it. - // Else a nested event loop, for example from a modal dialog, might - // process the same event again. - - m_pendingEvents->Erase(node); + wxPendingEvents->DeleteObject(this); + wxLEAVE_CRIT_SECT( m_pendingEventsLock ); + return; + } - wxLEAVE_CRIT_SECT( Lock() ); + wxList::compatibility_iterator node = m_pendingEvents->GetFirst(); + wxEventPtr event(wx_static_cast(wxEvent *, node->GetData())); - ProcessEvent(*event); + // it's important we remove event from list before processing it, else a + // nested event loop, for example from a modal dialog, might process the + // same event again. + m_pendingEvents->Erase(node); - delete event; + // if there are no more pending events left, we don't need to stay in this + // list + if ( m_pendingEvents->IsEmpty() ) + { +#if wxUSE_THREADS + if (wxPendingEventsLocker) + wxENTER_CRIT_SECT(*wxPendingEventsLocker); +#endif + wxPendingEvents->DeleteObject(this); +#if wxUSE_THREADS + if (wxPendingEventsLocker) + wxLEAVE_CRIT_SECT(*wxPendingEventsLocker); +#endif + } - wxENTER_CRIT_SECT( Lock() ); + wxLEAVE_CRIT_SECT( m_pendingEventsLock ); - if ( --n == 0 ) - break; - } + ProcessEvent(*event); - wxLEAVE_CRIT_SECT( Lock() ); + // careful: this object could have been deleted by the event handler + // executed by the above ProcessEvent() call, so we can't access any fields + // of this object any more } /* @@ -1271,8 +1324,10 @@ bool wxEvtHandler::ProcessEvent(wxEvent& event) // Try going down the event handler chain if ( GetNextHandler() ) { - if ( GetNextHandler()->ProcessEvent(event) ) - return true; + // notice that we shouldn't let the parent have the event even if the + // next handler does not process it because it will have already passed + // it to the parent in this case + return GetNextHandler()->ProcessEvent(event); } // Finally propagate the event upwards the window chain and/or to the @@ -1280,6 +1335,42 @@ bool wxEvtHandler::ProcessEvent(wxEvent& event) return TryParent(event); } +bool wxEvtHandler::SafelyProcessEvent(wxEvent& event) +{ +#if wxUSE_EXCEPTIONS + try + { +#endif + return ProcessEvent(event); +#if wxUSE_EXCEPTIONS + } + catch ( ... ) + { + wxEventLoopBase *loop = wxEventLoopBase::GetActive(); + try + { + if ( !wxTheApp || !wxTheApp->OnExceptionInMainLoop() ) + { + if ( loop ) + loop->Exit(); + } + //else: continue running current event loop + + return false; + } + catch ( ... ) + { + // OnExceptionInMainLoop() threw, possibly rethrowing the same + // exception again: very good, but we still need Exit() to + // be called + if ( loop ) + loop->Exit(); + throw; + } + } +#endif // wxUSE_EXCEPTIONS +} + bool wxEvtHandler::SearchEventTable(wxEventTable& table, wxEvent& event) { @@ -1303,23 +1394,24 @@ void wxEvtHandler::Connect( int id, int lastId, wxObject *userData, wxEvtHandler* eventSink ) { -#if WXWIN_COMPATIBILITY_EVENT_TYPES - wxEventTableEntry *entry = new wxEventTableEntry; - entry->m_eventType = eventType; - entry->m_id = id; - entry->m_lastId = lastId; - entry->m_fn = func; - entry->m_callbackUserData = userData; -#else // !WXWIN_COMPATIBILITY_EVENT_TYPES wxDynamicEventTableEntry *entry = new wxDynamicEventTableEntry(eventType, id, lastId, func, userData, eventSink); -#endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES if (!m_dynamicEvents) m_dynamicEvents = new wxList; // Insert at the front of the list so most recent additions are found first m_dynamicEvents->Insert( (wxObject*) entry ); + + // Make sure we get to know when a sink is destroyed + if ( eventSink && eventSink != this ) + { + wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink); + if ( evtConnRef ) + evtConnRef->IncRef( ); + else + evtConnRef = new wxEventConnectionRef(this, eventSink); + } } bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType, @@ -1330,14 +1422,18 @@ bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType, if (!m_dynamicEvents) return false; + // Remove connection from tracker node (wxEventConnectionRef) + if ( eventSink && eventSink != this ) + { + wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink); + if ( evtConnRef ) + evtConnRef->DecRef(); + } + wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(); while (node) { -#if WXWIN_COMPATIBILITY_EVENT_TYPES - wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData(); -#else // !WXWIN_COMPATIBILITY_EVENT_TYPES - wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData(); -#endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES + wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData(); if ((entry->m_id == id) && ((entry->m_lastId == lastId) || (lastId == wxID_ANY)) && @@ -1365,11 +1461,7 @@ bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event ) wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(); while (node) { -#if WXWIN_COMPATIBILITY_EVENT_TYPES - wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData(); -#else // !WXWIN_COMPATIBILITY_EVENT_TYPES wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData(); -#endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES // get next node before (maybe) calling the event handler as it could // call Disconnect() invalidating the current node @@ -1377,17 +1469,10 @@ bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event ) if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0)) { - wxEvtHandler *handler = -#if !WXWIN_COMPATIBILITY_EVENT_TYPES - entry->m_eventSink ? entry->m_eventSink - : -#endif - this; - + wxEvtHandler *handler = entry->m_eventSink ? entry->m_eventSink + : this; if ( ProcessEventIfMatches(*entry, handler, event) ) - { return true; - } } } @@ -1435,6 +1520,46 @@ void *wxEvtHandler::DoGetClientData() const return m_clientData; } +// A helper to find an wxEventConnectionRef object +wxEventConnectionRef * +wxEvtHandler::FindRefInTrackerList(wxEvtHandler *eventSink) +{ + for ( wxTrackerNode *node = eventSink->GetFirst(); node; node = node->m_nxt ) + { + // we only want wxEventConnectionRef nodes here + wxEventConnectionRef *evtConnRef = node->ToEventConnection(); + if ( evtConnRef && evtConnRef->m_src == this ) + { + wxASSERT( evtConnRef->m_sink==eventSink ); + return evtConnRef; + } + } + + return NULL; +} + +void wxEvtHandler::OnSinkDestroyed( wxEvtHandler *sink ) +{ + wxASSERT(m_dynamicEvents); + + // remove all connections with this sink + wxList::compatibility_iterator node = m_dynamicEvents->GetFirst(), node_nxt; + while (node) + { + wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData(); + node_nxt = node->GetNext(); + + if ( entry->m_eventSink==sink ) + { + if (entry->m_callbackUserData) + delete entry->m_callbackUserData; + m_dynamicEvents->Erase( node ); + delete entry; + } + node = node_nxt; + } +} + #endif // wxUSE_BASE #if wxUSE_GUI @@ -1479,7 +1604,7 @@ wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type) wxEventBlocker::~wxEventBlocker() { wxEvtHandler *popped = m_window->PopEventHandler(false); - wxCHECK_RET(popped == this, + wxCHECK_RET(popped == this, wxT("Don't push other event handlers into a window managed by wxEventBlocker!")); }