make string at least empty (instead of containing garbage) if malloc() failed

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

diff --git a/src/common/event.cpp b/src/common/event.cpp
index 1b259b81264e1018c665fa9f4273e05a956f338b..ee22ca1062dd2ec83f85c19bd912ebb7eda61800 100644 (file)
--- a/src/common/event.cpp
+++ b/src/common/event.cpp
@@ -44,6 +44,9 @@
 
 #if wxUSE_GUI
     #include "wx/validate.h"
+#if wxUSE_STOPWATCH
+    #include "wx/stopwatch.h"
+#endif
 #endif // wxUSE_GUI
 
 // ----------------------------------------------------------------------------
@@ -125,6 +128,17 @@ const wxEventType wxEVT_FIRST = 10000;
 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
+
+#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)
@@ -143,7 +157,6 @@ DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
 
 // Sockets and timers send events, too
-DEFINE_EVENT_TYPE(wxEVT_SOCKET)
 DEFINE_EVENT_TYPE(wxEVT_TIMER)
 
 // Mouse event types
@@ -184,6 +197,9 @@ DEFINE_EVENT_TYPE(wxEVT_CHAR_HOOK)
 DEFINE_EVENT_TYPE(wxEVT_NAVIGATION_KEY)
 DEFINE_EVENT_TYPE(wxEVT_KEY_DOWN)
 DEFINE_EVENT_TYPE(wxEVT_KEY_UP)
+#if wxUSE_HOTKEY
+DEFINE_EVENT_TYPE(wxEVT_HOTKEY)
+#endif
 
 // Set cursor event
 DEFINE_EVENT_TYPE(wxEVT_SET_CURSOR)
@@ -248,7 +264,6 @@ DEFINE_EVENT_TYPE(wxEVT_DRAW_ITEM)
 DEFINE_EVENT_TYPE(wxEVT_MEASURE_ITEM)
 DEFINE_EVENT_TYPE(wxEVT_COMPARE_ITEM)
 DEFINE_EVENT_TYPE(wxEVT_INIT_DIALOG)
-DEFINE_EVENT_TYPE(wxEVT_IDLE)
 DEFINE_EVENT_TYPE(wxEVT_UPDATE_UI)
 
 // Generic command events
@@ -267,6 +282,10 @@ DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 
 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 
+#endif // wxUSE_GUI
+
+#if wxUSE_BASE
+
 // ============================================================================
 // implementation
 // ============================================================================
@@ -349,6 +368,84 @@ wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
     m_isCommandEvent = TRUE;
 }
 
+/*
+ * UI update events
+ */
+
+#if wxUSE_LONGLONG
+wxLongLong wxUpdateUIEvent::sm_lastUpdate = 0;
+#endif
+
+long wxUpdateUIEvent::sm_updateInterval = 0;
+
+wxUpdateUIMode wxUpdateUIEvent::sm_updateMode = wxUPDATE_UI_PROCESS_ALL;
+
+// Can we update?
+bool wxUpdateUIEvent::CanUpdate(wxWindow* win)
+{
+    // Don't update if we've switched global updating off
+    // and this window doesn't support updates.
+    if (win &&
+       (GetMode() == wxUPDATE_UI_PROCESS_SPECIFIED &&
+       ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
+        return FALSE;
+    
+    if (sm_updateInterval == -1)
+        return FALSE;
+    else if (sm_updateInterval == 0)
+        return TRUE;
+    else
+    {
+#if wxUSE_STOPWATCH && wxUSE_LONGLONG
+        wxLongLong now = wxGetLocalTimeMillis();
+        if (now > (sm_lastUpdate + sm_updateInterval))
+        {
+            return TRUE;
+        }
+#else
+        // If we don't have wxStopWatch or wxLongLong, we
+        // should err on the safe side and update now anyway. 
+        return TRUE;
+#endif
+    }
+    return FALSE;
+}
+
+// Reset the update time to provide a delay until the next
+// time we should update
+void wxUpdateUIEvent::ResetUpdateTime()
+{
+#if wxUSE_STOPWATCH && wxUSE_LONGLONG
+    if (sm_updateInterval > 0)
+    {
+        wxLongLong now = wxGetLocalTimeMillis();
+        if (now > (sm_lastUpdate + sm_updateInterval))
+        {
+            sm_lastUpdate = now;
+        }
+    }
+#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
  */
@@ -645,19 +742,19 @@ wxEvtHandler::~wxEvtHandler()
 
     if (m_dynamicEvents)
     {
-        wxNode *node = m_dynamicEvents->GetFirst();
-        while (node)
+        wxList::iterator it = m_dynamicEvents->begin(),
+                         en = m_dynamicEvents->end();
+        for (;it != en; ++it)
         {
 #if WXWIN_COMPATIBILITY_EVENT_TYPES
-            wxEventTableEntry *entry = (wxEventTableEntry*)node->GetData();
+            wxEventTableEntry *entry = (wxEventTableEntry*)*it;
 #else // !WXWIN_COMPATIBILITY_EVENT_TYPES
-            wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)node->GetData();
+            wxDynamicEventTableEntry *entry = (wxDynamicEventTableEntry*)*it;
 #endif // WXWIN_COMPATIBILITY_EVENT_TYPES/!WXWIN_COMPATIBILITY_EVENT_TYPES
 
             if (entry->m_callbackUserData)
                 delete entry->m_callbackUserData;
             delete entry;
-            node = node->GetNext();
         }
         delete m_dynamicEvents;
     };
@@ -751,11 +848,11 @@ void wxEvtHandler::ProcessPendingEvents()
     wxENTER_CRIT_SECT( *m_eventsLocker);
 #endif
 
-    wxNode *node = m_pendingEvents->GetFirst();
+    wxList::compatibility_iterator node = m_pendingEvents->GetFirst();
     while ( node )
     {
         wxEvent *event = (wxEvent *)node->GetData();
-        delete node;
+        m_pendingEvents->Erase(node);
 
         // In ProcessEvent, new events might get added and
         // we can safely leave the crtical section here.
@@ -933,7 +1030,7 @@ bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
     if (!m_dynamicEvents)
         return FALSE;
 
-    wxNode *node = m_dynamicEvents->GetFirst();
+    wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
     while (node)
     {
 #if WXWIN_COMPATIBILITY_EVENT_TYPES
@@ -951,7 +1048,7 @@ bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
         {
             if (entry->m_callbackUserData)
                 delete entry->m_callbackUserData;
-            m_dynamicEvents->DeleteNode( node );
+            m_dynamicEvents->Erase( node );
             delete entry;
             return TRUE;
         }
@@ -967,7 +1064,7 @@ bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
 
     int commandId = event.GetId();
 
-    wxNode *node = m_dynamicEvents->GetFirst();
+    wxList::compatibility_iterator node = m_dynamicEvents->GetFirst();
     while (node)
     {
 #if WXWIN_COMPATIBILITY_EVENT_TYPES