// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
#ifdef __GNUG__
#pragma implementation "event.h"
#endif
#include "wx/validate.h"
#endif // wxUSE_GUI
+// ----------------------------------------------------------------------------
+// wxWin macros
+// ----------------------------------------------------------------------------
+
#if !USE_SHARED_LIBRARY
IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
#endif // !USE_SHARED_LIBRARY
+// ----------------------------------------------------------------------------
+// global variables
+// ----------------------------------------------------------------------------
+
+// To put pending event handlers
+wxList *wxPendingEvents = (wxList *)NULL;
+
#if wxUSE_THREADS
-/* To put pending event handlers */
-extern wxList *wxPendingEvents;
-extern wxCriticalSection *wxPendingEventsLocker;
+ // protects wxPendingEvents list
+ wxCriticalSection *wxPendingEventsLocker = (wxCriticalSection *)NULL;
#endif
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxEvent
+// ----------------------------------------------------------------------------
+
/*
* General wxWindows events, covering
* all interesting things that might happen (button clicking, resizing,
{
switch (but) {
case -1:
- return (ButtonUp(-1) || ButtonDown(-1) || ButtonDClick(-1)) ;
+ return (ButtonUp(-1) || ButtonDown(-1) || ButtonDClick(-1));
case 1:
return (LeftDown() || LeftUp() || LeftDClick());
case 2:
m_enabled = TRUE;
m_dynamicEvents = (wxList *) NULL;
m_isWindow = FALSE;
+ m_pendingEvents = (wxList *) NULL;
#if wxUSE_THREADS
- m_eventsLocker = new wxCriticalSection();
+# if !defined(__VISAGECPP__)
+ m_eventsLocker = new wxCriticalSection;
+# endif
#endif
- m_pendingEvents = (wxList *) NULL;
}
wxEvtHandler::~wxEvtHandler()
delete m_dynamicEvents;
};
-#if wxUSE_THREADS
- if (m_pendingEvents)
- delete m_pendingEvents;
+ delete m_pendingEvents;
+#if wxUSE_THREADS
+# if !defined(__VISAGECPP__)
delete m_eventsLocker;
+# endif
#endif
}
#if wxUSE_THREADS
-#ifdef __WXGTK__
-extern bool g_isIdle;
-extern void wxapp_install_idle_handler();
-#endif
-
bool wxEvtHandler::ProcessThreadEvent(wxEvent& event)
{
- wxEvent *event_main;
- wxCriticalSectionLocker locker(*m_eventsLocker);
-
// check that we are really in a child thread
- wxASSERT( !wxThread::IsMain() );
+ wxASSERT_MSG( !wxThread::IsMain(),
+ wxT("use ProcessEvent() in main thread") );
- if (m_pendingEvents == NULL)
- m_pendingEvents = new wxList();
+ AddPendingEvent(event);
- event_main = (wxEvent *)event.Clone();
+ return TRUE;
+}
- m_pendingEvents->Append(event_main);
+#endif // wxUSE_THREADS
- wxPendingEventsLocker->Enter();
- wxPendingEvents->Append(this);
- wxPendingEventsLocker->Leave();
+void wxEvtHandler::AddPendingEvent(wxEvent& event)
+{
+ // 1) Add event to list of pending events of this event handler
- // TODO: Wake up idle handler for the other platforms.
-#ifdef __WXGTK__
- if (g_isIdle)
- wxapp_install_idle_handler();
+#if defined(__VISAGECPP__)
+ wxENTER_CRIT_SECT( m_eventsLocker);
+#else
+ wxENTER_CRIT_SECT( *m_eventsLocker);
#endif
- return TRUE;
+ if ( !m_pendingEvents )
+ m_pendingEvents = new wxList;
+
+ wxEvent *event2 = (wxEvent *)event.Clone();
+
+ m_pendingEvents->Append(event2);
+
+#if defined(__VISAGECPP__)
+ wxLEAVE_CRIT_SECT( m_eventsLocker);
+#else
+ wxLEAVE_CRIT_SECT( *m_eventsLocker);
+#endif
+
+ // 2) Add this event handler to list of event handlers that
+ // have pending events.
+
+ wxENTER_CRIT_SECT(*wxPendingEventsLocker);
+
+ if ( !wxPendingEvents )
+ wxPendingEvents = new wxList;
+ wxPendingEvents->Append(this);
+
+ // 3) Inform the system that new pending events are somwehere,
+ // and that these should be processed in idle time.
+
+ wxWakeUpIdle();
+
+ wxLEAVE_CRIT_SECT(*wxPendingEventsLocker);
}
void wxEvtHandler::ProcessPendingEvents()
{
- wxCriticalSectionLocker locker(*m_eventsLocker);
- wxNode *node = m_pendingEvents->First();
- wxEvent *event;
+#if defined(__VISAGECPP__)
+ wxENTER_CRIT_SECT( m_eventsLocker);
+#else
+ wxENTER_CRIT_SECT( *m_eventsLocker);
+#endif
- while (node != NULL) {
- event = (wxEvent *)node->Data();
- ProcessEvent(*event);
- delete node;
- node = m_pendingEvents->First();
+ wxNode *node = m_pendingEvents->First();
+ while ( node )
+ {
+ wxEvent *event = (wxEvent *)node->Data();
+ delete 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
+ ProcessEvent(*event);
+ delete event;
+#if defined(__VISAGECPP__)
+ wxENTER_CRIT_SECT( m_eventsLocker);
+#else
+ wxENTER_CRIT_SECT( *m_eventsLocker);
+#endif
+
+ node = m_pendingEvents->First();
}
-}
+
+#if defined(__VISAGECPP__)
+ wxLEAVE_CRIT_SECT( m_eventsLocker);
+#else
+ wxLEAVE_CRIT_SECT( *m_eventsLocker);
#endif
+}
/*
* Event table stuff
bool wxEvtHandler::ProcessEvent(wxEvent& event)
{
#if wxUSE_GUI
- /* check that our flag corresponds to reality */
+ // check that our flag corresponds to reality
wxASSERT( m_isWindow == IsKindOf(CLASSINFO(wxWindow)) );
#endif // wxUSE_GUI
- /* An event handler can be enabled or disabled */
+ // An event handler can be enabled or disabled
if ( GetEvtHandlerEnabled() )
{
#if wxUSE_THREADS
- /* Check whether we are in a child thread. */
- if (!wxThread::IsMain())
+ // Check whether we are in a child thread.
+ if ( !wxThread::IsMain() )
return ProcessThreadEvent(event);
-#endif
- /* Handle per-instance dynamic event tables first */
+#endif // wxUSE_THREADS
+ // Handle per-instance dynamic event tables first
if ( m_dynamicEvents && SearchDynamicEventTable(event) )
return TRUE;
- /* Then static per-class event tables */
-
+ // Then static per-class event tables
const wxEventTable *table = GetEventTable();
#if wxUSE_GUI && wxUSE_VALIDATORS
}
return FALSE;
}
+
void wxEvtHandler::Connect( int id, int lastId,
wxEventType eventType,
wxObjectEventFunction func,
m_dynamicEvents->Append( (wxObject*) entry );
}
+bool wxEvtHandler::Disconnect( int id, int lastId, wxEventType eventType,
+ wxObjectEventFunction func,
+ wxObject *userData )
+{
+ if (!m_dynamicEvents)
+ return FALSE;
+
+ wxNode *node = m_dynamicEvents->First();
+ while (node)
+ {
+ wxEventTableEntry *entry = (wxEventTableEntry*)node->Data();
+ if ((entry->m_id == id) &&
+ ((entry->m_lastId == lastId) || (lastId == -1)) &&
+ ((entry->m_eventType == eventType) || (eventType == wxEVT_NULL)) &&
+ ((entry->m_fn == func) || (func == (wxObjectEventFunction)NULL)) &&
+ ((entry->m_callbackUserData == userData) || (userData == (wxObject*)NULL)))
+ {
+ if (entry->m_callbackUserData) delete entry->m_callbackUserData;
+ m_dynamicEvents->DeleteNode( node );
+ delete entry;
+ return TRUE;
+ }
+ node = node->Next();
+ }
+ return FALSE;
+}
+
bool wxEvtHandler::SearchDynamicEventTable( wxEvent& event )
{
wxCHECK_MSG( m_dynamicEvents, FALSE,
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