X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8ebec7dcd8b0b7294dbc86340d52a10b45bc80db..bba35861478a26f5d8c756a9a7fa2bbd19a69cb1:/src/common/event.cpp

diff --git a/src/common/event.cpp b/src/common/event.cpp
index dc121dee42..da4b8066bc 100644
--- a/src/common/event.cpp
+++ b/src/common/event.cpp
@@ -45,6 +45,13 @@
 
 #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
 // ----------------------------------------------------------------------------
@@ -406,13 +413,15 @@ 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
@@ -1012,7 +1021,6 @@ void wxEventHashTable::GrowEventTypeTable()
     delete[] oldEventTypeTable;
 }
 
-
 // ----------------------------------------------------------------------------
 // wxEvtHandler
 // ----------------------------------------------------------------------------
@@ -1052,6 +1060,22 @@ wxEvtHandler::~wxEvtHandler()
         {
             wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
 
+#if wxUSE_WEAKREF
+            // Remove ourselves from sink destructor notifications
+            // (this has usually been been done, in wxTrackable destructor)
+            wxEvtHandler *eventSink = entry->m_eventSink;
+            if ( eventSink )
+            {
+                wxEventConnectionRef * const
+                    evtConnRef = FindRefInTrackerList(eventSink);
+                if ( evtConnRef )
+                {
+                    eventSink->RemoveNode(evtConnRef);
+                    delete evtConnRef;
+                }
+            }
+#endif // wxUSE_WEAKREF
+
             if (entry->m_callbackUserData)
                 delete entry->m_callbackUserData;
             delete entry;
@@ -1066,8 +1090,10 @@ wxEvtHandler::~wxEvtHandler()
     // Remove us from wxPendingEvents if necessary.
     if ( wxPendingEvents )
     {
-        if(wxPendingEventsLocker)
+#if wxUSE_THREADS
+        if (wxPendingEventsLocker)
             wxENTER_CRIT_SECT(*wxPendingEventsLocker);
+#endif
 
         if ( wxPendingEvents->DeleteObject(this) )
         {
@@ -1077,8 +1103,10 @@ wxEvtHandler::~wxEvtHandler()
         }
         //else: we weren't in this list at all, it's ok
 
-        if(wxPendingEventsLocker)
+#if wxUSE_THREADS
+        if (wxPendingEventsLocker)
             wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
+#endif
     }
 
     // we only delete object data, not untyped
@@ -1148,7 +1176,7 @@ void wxEvtHandler::ProcessPendingEvents()
                  "should have pending events if called" );
 
     wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
-    wxEvent * const event = wx_static_cast(wxEvent *, node->GetData());
+    wxEventPtr event(wx_static_cast(wxEvent *, node->GetData()));
 
     // 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
@@ -1167,8 +1195,6 @@ void wxEvtHandler::ProcessPendingEvents()
     // 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
-
-    delete event;
 }
 
 /*
@@ -1347,6 +1373,18 @@ void wxEvtHandler::Connect( int id, int lastId,
 
     // Insert at the front of the list so most recent additions are found first
     m_dynamicEvents->Insert( (wxObject*) entry );
+
+#if wxUSE_WEAKREF
+    // 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);
+    }
+#endif // wxUSE_WEAKREF
 }
 
 bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
@@ -1357,6 +1395,16 @@ bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
     if (!m_dynamicEvents)
         return false;
 
+#if wxUSE_WEAKREF
+    // Remove connection from tracker node (wxEventConnectionRef)
+    if ( eventSink && eventSink != this )
+    {
+        wxEventConnectionRef *evtConnRef = FindRefInTrackerList(eventSink);
+        if ( evtConnRef )
+            evtConnRef->DecRef();
+    }
+#endif // wxUSE_WEAKREF
+
     wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
     while (node)
     {
@@ -1447,6 +1495,48 @@ void *wxEvtHandler::DoGetClientData() const
     return m_clientData;
 }
 
+#if wxUSE_WEAKREF
+// 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_WEAKREF
+
 #endif // wxUSE_BASE
 
 #if wxUSE_GUI