fix for bug 1371386, with some minor mods and cleanup

[wxWidgets.git] / src / common / event.cpp

diff --git a/src/common/event.cpp b/src/common/event.cpp
index bab410244b6e3799296b279321e431cab39fec1b..8b74ef2a817b5f275b1561070a5894c5a18df4d1 100644 (file)
--- a/src/common/event.cpp
+++ b/src/common/event.cpp
@@ -17,17 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) && !defined(__EMX__)
-// Some older compilers (such as EMX) cannot handle
-// #pragma interface/implementation correctly, iff
-// #pragma implementation is used in _two_ translation
-// units (as created by e.g. event.cpp compiled for
-// libwx_base and event.cpp compiled for libwx_gui_core).
-// So we must not use those pragmas for those compilers in
-// such files.
-    #pragma implementation "event.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -245,7 +234,7 @@ DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEUP)
 DEFINE_EVENT_TYPE(wxEVT_SCROLL_PAGEDOWN)
 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBTRACK)
 DEFINE_EVENT_TYPE(wxEVT_SCROLL_THUMBRELEASE)
-DEFINE_EVENT_TYPE(wxEVT_SCROLL_ENDSCROLL)
+DEFINE_EVENT_TYPE(wxEVT_SCROLL_CHANGED)
 
 // Scroll events from wxWindow
 DEFINE_EVENT_TYPE(wxEVT_SCROLLWIN_TOP)
@@ -265,6 +254,7 @@ DEFINE_EVENT_TYPE(wxEVT_MOVING)
 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)
@@ -1033,6 +1023,8 @@ wxEvtHandler::~wxEvtHandler()
         delete m_dynamicEvents;
     };
 
+    if (m_pendingEvents)
+        m_pendingEvents->DeleteContents(true);
     delete m_pendingEvents;
 
 #if wxUSE_THREADS
@@ -1043,8 +1035,10 @@ wxEvtHandler::~wxEvtHandler()
     // Remove us from wxPendingEvents if necessary.
     if(wxPendingEventsLocker)
         wxENTER_CRIT_SECT(*wxPendingEventsLocker);
-    if ( wxPendingEvents ) {
-        wxPendingEvents->DeleteObject(this);
+    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);
@@ -1074,7 +1068,7 @@ void wxEvtHandler::ClearEventLocker()
     delete m_eventsLocker;
     m_eventsLocker = NULL;
 #endif
-};
+}
 
 #endif // wxUSE_THREADS
 
@@ -1089,22 +1083,14 @@ void wxEvtHandler::AddPendingEvent(wxEvent& event)
     wxCHECK_RET( eventCopy,
                  _T("events of this type aren't supposed to be posted") );
 
-#if defined(__VISAGECPP__)
-    wxENTER_CRIT_SECT( m_eventsLocker);
-#else
-    wxENTER_CRIT_SECT( *m_eventsLocker);
-#endif
+    wxENTER_CRIT_SECT( Lock() );
 
     if ( !m_pendingEvents )
       m_pendingEvents = new wxList;
 
     m_pendingEvents->Append(eventCopy);
 
-#if defined(__VISAGECPP__)
-    wxLEAVE_CRIT_SECT( m_eventsLocker);
-#else
-    wxLEAVE_CRIT_SECT( *m_eventsLocker);
-#endif
+    wxLEAVE_CRIT_SECT( Lock() );
 
     // 2) Add this event handler to list of event handlers that
     //    have pending events.
@@ -1117,7 +1103,7 @@ void wxEvtHandler::AddPendingEvent(wxEvent& event)
 
     wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
 
-    // 3) Inform the system that new pending events are somwehere,
+    // 3) Inform the system that new pending events are somewhere,
     //    and that these should be processed in idle time.
     wxWakeUpIdle();
 }
@@ -1129,51 +1115,36 @@ void wxEvtHandler::ProcessPendingEvents()
     wxCHECK_RET( m_pendingEvents,
                  wxT("Please call wxApp::ProcessPendingEvents() instead") );
 
-#if defined(__VISAGECPP__)
-    wxENTER_CRIT_SECT( m_eventsLocker);
-#else
-    wxENTER_CRIT_SECT( *m_eventsLocker);
-#endif
-
-    // remember last event to process during this iteration
-    wxList::compatibility_iterator lastPendingNode = m_pendingEvents->GetLast();
+    wxENTER_CRIT_SECT( Lock() );
 
-    wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
-    while ( node )
+    // 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();
+
+        // 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);
 
-        // In ProcessEvent, new events might get added and
-        // we can safely leave the crtical section here.
-#if defined(__VISAGECPP__)
-        wxLEAVE_CRIT_SECT( m_eventsLocker);
-#else
-        wxLEAVE_CRIT_SECT( *m_eventsLocker);
-#endif
+        wxLEAVE_CRIT_SECT( Lock() );
+
         ProcessEvent(*event);
         delete event;
-#if defined(__VISAGECPP__)
-        wxENTER_CRIT_SECT( m_eventsLocker);
-#else
-        wxENTER_CRIT_SECT( *m_eventsLocker);
-#endif
 
-        // 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
-        if ( node == lastPendingNode )
-            break;
+        wxENTER_CRIT_SECT( Lock() );
 
-        node = m_pendingEvents->GetFirst();
+        if ( !--n )
+            break;
     }
 
-#if defined(__VISAGECPP__)
-    wxLEAVE_CRIT_SECT( m_eventsLocker);
-#else
-    wxLEAVE_CRIT_SECT( *m_eventsLocker);
-#endif
+    wxLEAVE_CRIT_SECT( Lock() );
 }
 
 /*
@@ -1393,7 +1364,7 @@ bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
     }
 
     return false;
-};
+}
 
 void wxEvtHandler::DoSetClientObject( wxClientData *data )
 {