fix (with a test) for wxMenu::UpdateUI bug (the handler defined in the menu class was never used)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@8046 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/menu/menu.cpp

@@ -77,6 +77,7 @@ public:
     void OnRightDown(wxMouseEvent& event);
 
     void OnUpdateCheckMenuItemUI(wxUpdateUIEvent& event);
+    void OnUpdatePopup(wxUpdateUIEvent& event) { event.Enable(FALSE); }
 
 private:
     wxMenu *CreateDummyMenu(wxString *title);
@@ -109,6 +110,17 @@ private:
     DECLARE_EVENT_TABLE()
 };
 
+class MyPopupMenu : public wxMenu
+{
+public:
+    MyPopupMenu(const wxString& title) : wxMenu(title) { }
+
+    void OnUpdateUI(wxUpdateUIEvent& event) { event.Enable(FALSE); }
+
+private:
+    DECLARE_EVENT_TABLE()
+};
+
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
@@ -145,6 +157,8 @@ enum
 
     Menu_Popup_ToBeDeleted = 2000,
     Menu_Popup_ToBeGreyed,
+    Menu_Popup_ToBeGreyed2,
+    Menu_Popup_ToBeGreyed3,
     Menu_Popup_ToBeChecked,
     Menu_Popup_Submenu,
 
@@ -182,6 +196,8 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 
     EVT_UPDATE_UI(Menu_Menu_Check, MyFrame::OnUpdateCheckMenuItemUI)
 
+    EVT_UPDATE_UI(Menu_Popup_ToBeGreyed3, MyFrame::OnUpdatePopup)
+
     EVT_RIGHT_DOWN(MyFrame::OnRightDown)
 END_EVENT_TABLE()
 
@@ -189,6 +205,10 @@ BEGIN_EVENT_TABLE(MyEvtHandler, wxEvtHandler)
     EVT_MENU(-1, MyEvtHandler::OnMenuEvent)
 END_EVENT_TABLE()
 
+BEGIN_EVENT_TABLE(MyPopupMenu, wxMenu)
+    EVT_UPDATE_UI(Menu_Popup_ToBeGreyed2, MyPopupMenu::OnUpdateUI)
+END_EVENT_TABLE()
+
 // ============================================================================
 // implementation
 // ============================================================================
@@ -618,7 +638,7 @@ void MyFrame::OnGetMenuItemInfo(wxCommandEvent& WXUNUSED(event))
 
 void MyFrame::OnRightDown(wxMouseEvent &event )
 {
-    wxMenu menu("Test popup");
+    MyPopupMenu menu("Test popup");
 
     menu.Append(Menu_Help_About, "&About");
     menu.Append(Menu_Popup_Submenu, "Submenu", CreateDummyMenu(NULL));
@@ -626,6 +646,10 @@ void MyFrame::OnRightDown(wxMouseEvent &event )
     menu.Append(Menu_Popup_ToBeChecked, "To be checked", "", TRUE);
     menu.Append(Menu_Popup_ToBeGreyed, "To be greyed");
     menu.AppendSeparator();
+    // VZ: don't search for the word autogreyed in the dictionary...
+    menu.Append(Menu_Popup_ToBeGreyed2, "To be autogreyed");
+    menu.Append(Menu_Popup_ToBeGreyed3, "This one too");
+    menu.AppendSeparator();
     menu.Append(Menu_File_Quit, "E&xit");
 
     menu.Delete(Menu_Popup_ToBeDeleted);

src/common/menucmn.cpp

@@ -346,10 +346,10 @@ void wxMenuBase::UpdateUI(wxEvtHandler* source)
 {
     if ( !source && GetInvokingWindow() )
         source = GetInvokingWindow()->GetEventHandler();
+
+    wxEvtHandler *self = GetEventHandler();
     if ( !source )
-        source = GetEventHandler();
+        source = self;
-    if ( !source )
-        source = this;
 
     wxMenuItemList::Node* node = GetMenuItems().GetFirst();
     while ( node )
@@ -361,7 +361,16 @@ void wxMenuBase::UpdateUI(wxEvtHandler* source)
             wxUpdateUIEvent event(id);
             event.SetEventObject( source );
 
-            if ( source->ProcessEvent(event) )
+            // let the invoking window process the event and fall back to the
+            // menu itself if it didn't
+            bool processed = source->ProcessEvent(event);
+            if ( !processed && source != self )
+            {
+                event.SetEventObject( self );
+                processed = self->ProcessEvent(event);
+            }
+
+            if ( processed )
             {
                 // if anything changed, update the chanegd attribute
                 if (event.GetSetText())