fixing osx_cocoa

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

diff --git a/src/common/event.cpp b/src/common/event.cpp
index 4dd9eaeaa4f8e6fdaa952b0f31a61a5717e0e1ed..31e6e6adef4f1cd523ee1ab455906a80c110870d 100644 (file)
--- a/src/common/event.cpp
+++ b/src/common/event.cpp
@@ -62,11 +62,11 @@
     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
     IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)

+    IMPLEMENT_DYNAMIC_CLASS(wxThreadEvent, wxEvent)

 #endif // wxUSE_BASE
 
 #if wxUSE_GUI
     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
 #endif // wxUSE_BASE
 
 #if wxUSE_GUI
     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)

-    IMPLEMENT_DYNAMIC_CLASS(wxThreadEvent, wxCommandEvent)

     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxScrollWinEvent, wxEvent)


@@ -118,7 +118,7 @@ wxEventHashTable &wxEvtHandler::GetEventHashTable() const
 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 
 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =
 wxEventHashTable wxEvtHandler::sm_eventHashTable(wxEvtHandler::sm_eventTable);
 
 const wxEventTableEntry wxEvtHandler::sm_eventTableEntries[] =

-    { DECLARE_EVENT_TABLE_TERMINATOR() };
+    { wxDECLARE_EVENT_TABLE_TERMINATOR() };

 
 
 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors
 
 
 // wxUSE_MEMORY_TRACING considers memory freed from the static objects dtors


@@ -151,10 +151,13 @@ IMPLEMENT_DYNAMIC_CLASS(wxEventTableEntryModule, wxModule)
 
 const wxEventType wxEVT_FIRST = 10000;
 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 
 const wxEventType wxEVT_FIRST = 10000;
 const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;

+const wxEventType wxEVT_NULL = wxNewEventType();

 
 

-DEFINE_EVENT_TYPE(wxEVT_NULL)

 wxDEFINE_EVENT( wxEVT_IDLE, wxIdleEvent );
 
 wxDEFINE_EVENT( wxEVT_IDLE, wxIdleEvent );
 

+// Thread event
+wxDEFINE_EVENT( wxEVT_THREAD, wxThreadEvent );
+

 #endif // wxUSE_BASE
 
 #if wxUSE_GUI
 #endif // wxUSE_BASE
 
 #if wxUSE_GUI


@@ -206,6 +209,7 @@ wxDEFINE_EVENT( wxEVT_AUX2_DCLICK, wxMouseEvent );
 
 // Character input event type
 wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent );
 
 // Character input event type
 wxDEFINE_EVENT( wxEVT_CHAR, wxKeyEvent );

+wxDEFINE_EVENT( wxEVT_AFTER_CHAR, wxKeyEvent );

 wxDEFINE_EVENT( wxEVT_CHAR_HOOK, wxKeyEvent );
 wxDEFINE_EVENT( wxEVT_NAVIGATION_KEY, wxNavigationKeyEvent );
 wxDEFINE_EVENT( wxEVT_KEY_DOWN, wxKeyEvent );
 wxDEFINE_EVENT( wxEVT_CHAR_HOOK, wxKeyEvent );
 wxDEFINE_EVENT( wxEVT_NAVIGATION_KEY, wxNavigationKeyEvent );
 wxDEFINE_EVENT( wxEVT_KEY_DOWN, wxKeyEvent );


@@ -311,9 +315,6 @@ wxDEFINE_EVENT( wxEVT_COMMAND_ENTER, wxCommandEvent );
 wxDEFINE_EVENT( wxEVT_HELP, wxHelpEvent );
 wxDEFINE_EVENT( wxEVT_DETAILED_HELP, wxHelpEvent );
 
 wxDEFINE_EVENT( wxEVT_HELP, wxHelpEvent );
 wxDEFINE_EVENT( wxEVT_DETAILED_HELP, wxHelpEvent );
 

-// Thread event
-wxDEFINE_EVENT( wxEVT_COMMAND_THREAD, wxThreadEvent );
-

 #endif // wxUSE_GUI
 
 #if wxUSE_BASE
 #endif // wxUSE_GUI
 
 #if wxUSE_BASE


@@ -363,6 +364,7 @@ wxEvent::wxEvent(int theId, wxEventType commandType)
     m_id = theId;
     m_skipped = false;
     m_callbackUserData = NULL;
     m_id = theId;
     m_skipped = false;
     m_callbackUserData = NULL;

+    m_handlerToProcessOnlyIn = NULL;

     m_isCommandEvent = false;
     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
     m_wasProcessed = false;
     m_isCommandEvent = false;
     m_propagationLevel = wxEVENT_PROPAGATE_NONE;
     m_wasProcessed = false;


@@ -375,6 +377,7 @@ wxEvent::wxEvent(const wxEvent& src)
     , m_timeStamp(src.m_timeStamp)
     , m_id(src.m_id)
     , m_callbackUserData(src.m_callbackUserData)
     , m_timeStamp(src.m_timeStamp)
     , m_id(src.m_id)
     , m_callbackUserData(src.m_callbackUserData)

+    , m_handlerToProcessOnlyIn(NULL)

     , m_propagationLevel(src.m_propagationLevel)
     , m_skipped(src.m_skipped)
     , m_isCommandEvent(src.m_isCommandEvent)
     , m_propagationLevel(src.m_propagationLevel)
     , m_skipped(src.m_skipped)
     , m_isCommandEvent(src.m_isCommandEvent)


@@ -391,6 +394,7 @@ wxEvent& wxEvent::operator=(const wxEvent& src)
     m_timeStamp = src.m_timeStamp;
     m_id = src.m_id;
     m_callbackUserData = src.m_callbackUserData;
     m_timeStamp = src.m_timeStamp;
     m_id = src.m_id;
     m_callbackUserData = src.m_callbackUserData;

+    m_handlerToProcessOnlyIn = NULL;

     m_propagationLevel = src.m_propagationLevel;
     m_skipped = src.m_skipped;
     m_isCommandEvent = src.m_isCommandEvent;
     m_propagationLevel = src.m_propagationLevel;
     m_skipped = src.m_skipped;
     m_isCommandEvent = src.m_isCommandEvent;


@@ -418,8 +422,6 @@ wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
 {
     m_clientData = NULL;
     m_clientObject = NULL;
 {
     m_clientData = NULL;
     m_clientObject = NULL;

-    m_extraLong = 0;
-    m_commandInt = 0;

     m_isCommandEvent = true;
 
     // the command events are propagated upwards by default
     m_isCommandEvent = true;
 
     // the command events are propagated upwards by default


@@ -470,6 +472,13 @@ bool wxUpdateUIEvent::CanUpdate(wxWindowBase *win)
        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
         return false;
 
        ((win->GetExtraStyle() & wxWS_EX_PROCESS_UI_UPDATES) == 0)))
         return false;
 

+    // Don't update children of the hidden windows: this is useless as any
+    // change to their state won't be seen by the user anyhow. Notice that this
+    // argument doesn't apply to the hidden windows (with visible parent)
+    // themselves as they could be shown by their EVT_UPDATE_UI handler.
+    if ( win->GetParent() && !win->GetParent()->IsShownOnScreen() )
+        return false;
+

     if (sm_updateInterval == -1)
         return false;
 
     if (sm_updateInterval == -1)
         return false;
 


@@ -730,9 +739,9 @@ wxPoint wxMouseEvent::GetLogicalPosition(const wxDC& dc) const
 wxKeyEvent::wxKeyEvent(wxEventType type)
 {
     m_eventType = type;
 wxKeyEvent::wxKeyEvent(wxEventType type)
 {
     m_eventType = type;

-    m_keyCode = 0;
+    m_keyCode = WXK_NONE;

 #if wxUSE_UNICODE
 #if wxUSE_UNICODE

-    m_uniChar = 0;
+    m_uniChar = WXK_NONE;

 #endif
 }
 
 #endif
 }
 


@@ -884,8 +893,7 @@ void wxEventHashTable::Clear()
         delete eTTnode;
     }
 
         delete eTTnode;
     }
 

-    delete[] m_eventTypeTable;
-    m_eventTypeTable = NULL;
+    wxDELETEA(m_eventTypeTable);

 
     m_size = 0;
 }
 
     m_size = 0;
 }


@@ -957,7 +965,7 @@ void wxEventHashTable::InitHashTable()
         table = table->baseTable;
     }
 
         table = table->baseTable;
     }
 

-    // Lets free some memory.
+    // Let's free some memory.

     size_t i;
     for(i = 0; i < m_size; i++)
     {
     size_t i;
     for(i = 0; i < m_size; i++)
     {


@@ -1330,6 +1338,18 @@ bool wxEvtHandler::TryBefore(wxEvent& event)
 
 bool wxEvtHandler::TryAfter(wxEvent& event)
 {
 
 bool wxEvtHandler::TryAfter(wxEvent& event)
 {

+    // We only want to pass the window to the application object once even if
+    // there are several chained handlers. Ensure that this is what happens by
+    // only calling DoTryApp() if there is no next handler (which would do it).
+    //
+    // Notice that, unlike simply calling TryAfter() on the last handler in the
+    // chain only from ProcessEvent(), this also works with wxWindow object in
+    // the middle of the chain: its overridden TryAfter() will still be called
+    // and propagate the event upwards the window hierarchy even if it's not
+    // the last one in the chain (which, admittedly, shouldn't happen often).
+    if ( GetNextHandler() )
+        return GetNextHandler()->TryAfter(event);
+

 #if WXWIN_COMPATIBILITY_2_8
     // as above, call the old virtual function for compatibility
     return TryParent(event);
 #if WXWIN_COMPATIBILITY_2_8
     // as above, call the old virtual function for compatibility
     return TryParent(event);


@@ -1340,11 +1360,12 @@ bool wxEvtHandler::TryAfter(wxEvent& event)
 
 bool wxEvtHandler::ProcessEvent(wxEvent& event)
 {
 
 bool wxEvtHandler::ProcessEvent(wxEvent& event)
 {

-    // allow the application to hook into event processing
+    // The very first thing we do is to allow the application to hook into
+    // event processing in order to globally pre-process all events.

     //
     //

-    // note that we should only do it if we're the first event handler called
+    // Note that we should only do it if we're the first event handler called

     // to avoid calling FilterEvent() multiple times as the event goes through
     // to avoid calling FilterEvent() multiple times as the event goes through

-    // the event handler chain and possibly upwards the window hierarchy
+    // the event handler chain and possibly upwards the window hierarchy.

     if ( !event.WasProcessed() )
     {
         if ( wxTheApp )
     if ( !event.WasProcessed() )
     {
         if ( wxTheApp )


@@ -1361,30 +1382,102 @@ bool wxEvtHandler::ProcessEvent(wxEvent& event)
         }
     }
 
         }
     }
 

-    if ( ProcessEventHere(event) )
+    // Short circuit the event processing logic if we're requested to process
+    // this event in this handler only, see DoTryChain() for more details.
+    if ( event.ShouldProcessOnlyIn(this) )
+        return TryBeforeAndHere(event);
+
+
+    // Try to process the event in this handler itself.
+    if ( ProcessEventLocally(event) )
+    {
+        // It is possible that DoTryChain() called from ProcessEventLocally()
+        // returned true but the event was not really processed: this happens
+        // if a custom handler ignores the request to process the event in this
+        // handler only and in this case we should skip the post processing
+        // done in TryAfter() but still return the correct value ourselves to
+        // indicate whether we did or did not find a handler for this event.
+        return !event.GetSkipped();
+    }
+
+    // If we still didn't find a handler, propagate the event upwards the
+    // window chain and/or to the application object.
+    if ( TryAfter(event) )

         return true;
 
         return true;
 

-    // pass the event to the next handler, notice that we shouldn't call
-    // TryAfter() even if it doesn't handle the event as the last handler in
-    // the chain will do it
-    if ( GetNextHandler() )
-        return GetNextHandler()->ProcessEvent(event);

 
 

-    // propagate the event upwards the window chain and/or to the application
-    // object if it wasn't processed at this level
-    return TryAfter(event);
+    // No handler found anywhere, bail out.
+    return false;
+}
+
+bool wxEvtHandler::ProcessEventLocally(wxEvent& event)
+{
+    // Try the hooks which should be called before our own handlers and this
+    // handler itself first. Notice that we should not call ProcessEvent() on
+    // this one as we're already called from it, which explains why we do it
+    // here and not in DoTryChain()
+    return TryBeforeAndHere(event) || DoTryChain(event);

 }
 
 }
 

-bool wxEvtHandler::ProcessEventHere(wxEvent& event)
+bool wxEvtHandler::DoTryChain(wxEvent& event)
+{
+    for ( wxEvtHandler *h = GetNextHandler(); h; h = h->GetNextHandler() )
+    {
+        // We need to process this event at the level of this handler only
+        // right now, the pre-/post-processing was either already done by
+        // ProcessEvent() from which we were called or will be done by it when
+        // we return.
+        //
+        // However we must call ProcessEvent() and not TryHereOnly() because the
+        // existing code (including some in wxWidgets itself) expects the
+        // overridden ProcessEvent() in its custom event handlers pushed on a
+        // window to be called.
+        //
+        // So we must call ProcessEvent() but it must not do what it usually
+        // does. To resolve this paradox we set up a special flag inside the
+        // object itself to let ProcessEvent() know that it shouldn't do any
+        // pre/post-processing for this event if it gets it. Note that this
+        // only applies to this handler, if the event is passed to another one
+        // by explicitly calling its ProcessEvent(), pre/post-processing should
+        // be done as usual.
+        //
+        // Final complication is that if the implementation of ProcessEvent()
+        // called wxEvent::DidntHonourProcessOnlyIn() (as the gross hack that
+        // is wxScrollHelperEvtHandler::ProcessEvent() does) and ignored our
+        // request to process event in this handler only, we have to compensate
+        // for it by not processing the event further because this was already
+        // done by that rogue event handler.
+        wxEventProcessInHandlerOnly processInHandlerOnly(event, h);
+        if ( h->ProcessEvent(event) )
+        {
+            // Make sure "skipped" flag is not set as the event was really
+            // processed in this case. Normally it shouldn't be set anyhow but
+            // make sure just in case the user code does something strange.
+            event.Skip(false);
+
+            return true;
+        }
+
+        if ( !event.ShouldProcessOnlyIn(h) )
+        {
+            // Still return true to indicate that no further processing should
+            // be undertaken but ensure that "skipped" flag is set so that the
+            // caller knows that the event was not really processed.
+            event.Skip();
+
+            return true;
+        }
+    }
+
+    return false;
+}
+
+bool wxEvtHandler::TryHereOnly(wxEvent& event)

 {
     // If the event handler is disabled it doesn't process any events
     if ( !GetEvtHandlerEnabled() )
         return false;
 
 {
     // If the event handler is disabled it doesn't process any events
     if ( !GetEvtHandlerEnabled() )
         return false;
 

-    // Try the hooks which should be called before our own handlers
-    if ( TryBefore(event) )
-        return true;
-

     // Handle per-instance dynamic event tables first
     if ( m_dynamicEvents && SearchDynamicEventTable(event) )
         return true;
     // Handle per-instance dynamic event tables first
     if ( m_dynamicEvents && SearchDynamicEventTable(event) )
         return true;