X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b46b1d59d6f69ad80dcf5955375578a6504d100a..acd32ffcdb319f162633c20e0202db3f8542998a:/src/common/evtloopcmn.cpp

diff --git a/src/common/evtloopcmn.cpp b/src/common/evtloopcmn.cpp
index ccbbb71126..863946f59d 100644
--- a/src/common/evtloopcmn.cpp
+++ b/src/common/evtloopcmn.cpp
@@ -9,14 +9,6 @@
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
-// ============================================================================
-// declarations
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------
-
 // for compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -31,13 +23,183 @@
 #endif //WX_PRECOMP
 
 // ----------------------------------------------------------------------------
-// globals
+// wxEventLoopBase
 // ----------------------------------------------------------------------------
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
+wxEventLoopBase *wxEventLoopBase::ms_activeLoop = NULL;
+
+wxEventLoopBase::wxEventLoopBase()
+{
+    m_isInsideYield = false;
+    m_eventsToProcessInsideYield = wxEVT_CATEGORY_ALL;
+}
+
+bool wxEventLoopBase::IsMain() const
+{
+    if (wxTheApp)
+        return wxTheApp->GetMainLoop() == this;
+    return false;
+}
+
+/* static */
+void wxEventLoopBase::SetActive(wxEventLoopBase* loop)
+{
+    ms_activeLoop = loop;
+
+    if (wxTheApp)
+        wxTheApp->OnEventLoopEnter(loop);
+}
+
+void wxEventLoopBase::OnExit()
+{
+    if (wxTheApp)
+        wxTheApp->OnEventLoopExit(this);
+}
+
+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__) || defined(__WXDFB__) || (defined(__UNIX__) && !wxUSE_GUI)
+#if defined(__WXMSW__) || defined(__WXMAC__) || defined(__WXDFB__) || (defined(__UNIX__) && wxUSE_BASE)
 
 // ============================================================================
 // wxEventLoopManual implementation
@@ -153,3 +315,4 @@ void wxEventLoopManual::Exit(int rc)
 }
 
 #endif // __WXMSW__ || __WXMAC__ || __WXDFB__
+