// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
-// ============================================================================
-// declarations
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------
-
// for compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/evtloop.h"
+#ifndef WX_PRECOMP
+ #include "wx/app.h"
+#endif //WX_PRECOMP
+
// ----------------------------------------------------------------------------
// globals
// ----------------------------------------------------------------------------
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
+wxEventLoopBase *wxEventLoopBase::ms_activeLoop = NULL;
+
+wxEventLoopBase::wxEventLoopBase()
+{
+ m_isInsideYield = false;
+ m_eventsToProcessInsideYield = wxEVT_CATEGORY_ALL;
+}
+
+void wxEventLoopBase::DelayPendingEventHandler(wxEvtHandler* toDelay)
+{
+ wxENTER_CRIT_SECT(m_handlersWithPendingEventsLocker);
+
+ // move the handler from the list of handlers with processable pending events
+ // to the list of handlers with pending events which needs to be processed later
+ m_handlersWithPendingEvents.Remove(toDelay);
+
+ if (m_handlersWithPendingDelayedEvents.Index(toDelay) == wxNOT_FOUND)
+ m_handlersWithPendingDelayedEvents.Add(toDelay);
+
+ wxLEAVE_CRIT_SECT(m_handlersWithPendingEventsLocker);
+}
+
+void wxEventLoopBase::RemovePendingEventHandler(wxEvtHandler* toRemove)
+{
+ wxENTER_CRIT_SECT(m_handlersWithPendingEventsLocker);
+
+ if (m_handlersWithPendingEvents.Index(toRemove) != wxNOT_FOUND)
+ {
+ m_handlersWithPendingEvents.Remove(toRemove);
+
+ // check that the handler was present only once in the list
+ wxASSERT_MSG( m_handlersWithPendingEvents.Index(toRemove) == wxNOT_FOUND,
+ "Handler occurs twice in the m_handlersWithPendingEvents list!" );
+ }
+ //else: it wasn't in this list at all, it's ok
+
+ if (m_handlersWithPendingDelayedEvents.Index(toRemove) != wxNOT_FOUND)
+ {
+ m_handlersWithPendingDelayedEvents.Remove(toRemove);
+
+ // check that the handler was present only once in the list
+ wxASSERT_MSG( m_handlersWithPendingDelayedEvents.Index(toRemove) == wxNOT_FOUND,
+ "Handler occurs twice in m_handlersWithPendingDelayedEvents list!" );
+ }
+ //else: it wasn't in this list at all, it's ok
+
+ wxLEAVE_CRIT_SECT(m_handlersWithPendingEventsLocker);
+}
+
+void wxEventLoopBase::AppendPendingEventHandler(wxEvtHandler* toAppend)
+{
+ wxENTER_CRIT_SECT(m_handlersWithPendingEventsLocker);
+
+ if ( m_handlersWithPendingEvents.Index(toAppend) == wxNOT_FOUND )
+ m_handlersWithPendingEvents.Add(toAppend);
+
+ wxLEAVE_CRIT_SECT(m_handlersWithPendingEventsLocker);
+}
+
+bool wxEventLoopBase::HasPendingEvents() const
+{
+ wxENTER_CRIT_SECT(const_cast<wxEventLoopBase*>(this)->m_handlersWithPendingEventsLocker);
+
+ bool has = !m_handlersWithPendingEvents.IsEmpty();
+
+ wxLEAVE_CRIT_SECT(const_cast<wxEventLoopBase*>(this)->m_handlersWithPendingEventsLocker);
+
+ return has;
+}
+
+void wxEventLoopBase::SuspendProcessingOfPendingEvents()
+{
+ wxENTER_CRIT_SECT(m_handlersWithPendingEventsLocker);
+}
+
+void wxEventLoopBase::ResumeProcessingOfPendingEvents()
+{
+ wxLEAVE_CRIT_SECT(m_handlersWithPendingEventsLocker);
+}
+
+void wxEventLoopBase::ProcessPendingEvents()
+{
+ wxENTER_CRIT_SECT(m_handlersWithPendingEventsLocker);
+
+ wxCHECK_RET( m_handlersWithPendingDelayedEvents.IsEmpty(),
+ "this helper list should be empty" );
+
+ // iterate until the list becomes empty: the handlers remove themselves
+ // from it when they don't have any more pending events
+ while (!m_handlersWithPendingEvents.IsEmpty())
+ {
+ // In ProcessPendingEvents(), new handlers might be added
+ // and we can safely leave the critical section here.
+ wxLEAVE_CRIT_SECT(m_handlersWithPendingEventsLocker);
+
+ // NOTE: we always call ProcessPendingEvents() on the first event handler
+ // with pending events because handlers auto-remove themselves
+ // from this list (see RemovePendingEventHandler) if they have no
+ // more pending events.
+ m_handlersWithPendingEvents[0]->ProcessPendingEvents();
+
+ wxENTER_CRIT_SECT(m_handlersWithPendingEventsLocker);
+ }
+
+ // now the wxHandlersWithPendingEvents is surely empty; however some event
+ // handlers may have moved themselves into wxHandlersWithPendingDelayedEvents
+ // because of a selective wxYield call in progress.
+ // Now we need to move them back to wxHandlersWithPendingEvents so the next
+ // call to this function has the chance of processing them:
+ if (!m_handlersWithPendingDelayedEvents.IsEmpty())
+ {
+ WX_APPEND_ARRAY(m_handlersWithPendingEvents, m_handlersWithPendingDelayedEvents);
+ m_handlersWithPendingDelayedEvents.Clear();
+ }
+
+ wxLEAVE_CRIT_SECT(m_handlersWithPendingEventsLocker);
+}
+
+void wxEventLoopBase::WakeUpIdle()
+{
+ WakeUp();
+}
+
+bool wxEventLoopBase::ProcessIdle()
+{
+ // process pending wx events before sending idle events
+ ProcessPendingEvents();
+
+ wxIdleEvent event;
+
+ event.SetEventObject(wxTheApp);
+ wxTheApp->ProcessEvent(event);
+ return event.MoreRequested();
+}
+
+bool wxEventLoopBase::Yield(bool onlyIfNeeded)
+{
+ if ( m_isInsideYield )
+ {
+ if ( !onlyIfNeeded )
+ {
+ wxFAIL_MSG( wxT("wxYield called recursively" ) );
+ }
+
+ return false;
+ }
+
+ return YieldFor(wxEVT_CATEGORY_ALL);
+}
// wxEventLoopManual is unused in the other ports
-#if defined(__WXMSW__) || defined(__WXMAC__)
+#if defined(__WXMSW__) || defined(__WXMAC__) || defined(__WXDFB__) || (defined(__UNIX__) && wxUSE_BASE)
// ============================================================================
// wxEventLoopManual implementation
// ProcessIdle() and Dispatch() below may throw so the code here should
// be exception-safe, hence we must use local objects for all actions we
// should undo
- wxEventLoopActivator activate(wx_static_cast(wxEventLoop *, this));
+ wxEventLoopActivator activate(this);
// we must ensure that OnExit() is called even if an exception is thrown
// from inside Dispatch() but we must call it from Exit() in normal
WakeUp();
}
-#endif // __WXMSW__ || __WXMAC__
+#endif // __WXMSW__ || __WXMAC__ || __WXDFB__
projects / wxWidgets.git / blobdiff