#endif
#include "wx/event.h"
+#include "wx/evtloop.h"
#ifndef WX_PRECOMP
#include "wx/list.h"
#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
// ----------------------------------------------------------------------------
// 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
DEFINE_EVENT_TYPE(wxEVT_SOCKET)
DEFINE_EVENT_TYPE(wxEVT_TIMER)
-#endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
-
#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)
DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED)
DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
// Mouse event types
DEFINE_EVENT_TYPE(wxEVT_HELP)
DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
-#endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
-
#endif // wxUSE_GUI
#if wxUSE_BASE
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
wxMouseEvent::wxMouseEvent(wxEventType commandType)
{
m_eventType = commandType;
- m_metaDown = false;
- m_altDown = false;
- m_controlDown = false;
- m_shiftDown = false;
+
+ m_x = 0;
+ m_y = 0;
+
m_leftDown = false;
- m_rightDown = false;
m_middleDown = false;
+ m_rightDown = false;
m_aux1Down = false;
m_aux2Down = false;
- m_x = 0;
- m_y = 0;
+
+ m_controlDown = false;
+ m_shiftDown = false;
+ m_altDown = false;
+ m_metaDown = false;
+
+ m_clickCount = -1;
+
m_wheelRotation = 0;
m_wheelDelta = 0;
m_linesPerAction = 0;
#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);
delete[] oldEventTypeTable;
}
-
// ----------------------------------------------------------------------------
// wxEvtHandler
// ----------------------------------------------------------------------------
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;
wxEvtHandler::~wxEvtHandler()
{
+ m_beingDeleted = true;
+
// Takes itself out of the list of handlers
if (m_previousHandler)
m_previousHandler->m_nextHandler = m_nextHandler;
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;
};
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;
return true;
}
-void wxEvtHandler::ClearEventLocker()
-{
-#if !defined(__VISAGECPP__)
- delete m_eventsLocker;
- m_eventsLocker = NULL;
-#endif
-}
-
#endif // wxUSE_THREADS
-void wxEvtHandler::AddPendingEvent(const 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.
if ( !wxPendingEvents )
wxPendingEvents = new wxList;
- wxPendingEvents->Append(this);
+ if ( !wxPendingEvents->Find(this) )
+ wxPendingEvents->Append(this);
wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
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( 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() )
- {
- wxEvent *event = (wxEvent *)node->GetData();
+ wxENTER_CRIT_SECT( m_pendingEventsLock );
- // 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);
+ // 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;
+ }
+
+ if( m_pendingEvents->IsEmpty() )
+ {
+ 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
}
/*
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)
{
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,
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)) &&
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
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;
- }
}
}
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
projects / wxWidgets.git / blobdiff