From 9827ce920855ba062aee8f2954368e08db477f18 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Thu, 15 Mar 2012 13:49:54 +0000
Subject: [PATCH] Enable/disable "Window" menu items in AUI MDI correctly.

Add EVT_UPDATE_UI handlers for "Close", "Close All" as well as "Next" and
"Previous" menu commands.

Closes #14102.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70909 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 docs/changes.txt        |  1 +
 include/wx/aui/tabmdi.h |  1 +
 src/aui/tabmdi.cpp      | 30 ++++++++++++++++++++++++++++++
 3 files changed, 32 insertions(+)

diff --git a/docs/changes.txt b/docs/changes.txt
index ef71794515..819d20a225 100644
--- a/docs/changes.txt
+++ b/docs/changes.txt
@@ -493,6 +493,7 @@ All (GUI):
 - Implement wxDV_ROW_LINES in generic wxDataViewCtrl (RedCAT).
 - Added EVT_AUI_PANE_ACTIVATED event (Ronny Krüger).
 - Added wxSplitterWindow::SetSashInvisible() (Armel Asselin).
+- Enable/disable "Window" menu items in AUI MDI correctly (wsu).
 
 
 GTK:
diff --git a/include/wx/aui/tabmdi.h b/include/wx/aui/tabmdi.h
index 45e30473c7..f24a2d22ce 100644
--- a/include/wx/aui/tabmdi.h
+++ b/include/wx/aui/tabmdi.h
@@ -101,6 +101,7 @@ protected:
     void AddWindowMenu(wxMenuBar *pMenuBar);
 
     void DoHandleMenu(wxCommandEvent &event);
+    void DoHandleUpdateUI(wxUpdateUIEvent &event);
 #endif // wxUSE_MENUS
 
     virtual bool ProcessEvent(wxEvent& event);
diff --git a/src/aui/tabmdi.cpp b/src/aui/tabmdi.cpp
index 2059d90941..881104291d 100644
--- a/src/aui/tabmdi.cpp
+++ b/src/aui/tabmdi.cpp
@@ -56,6 +56,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxAuiMDIParentFrame, wxFrame)
 BEGIN_EVENT_TABLE(wxAuiMDIParentFrame, wxFrame)
 #if wxUSE_MENUS
     EVT_MENU (wxID_ANY, wxAuiMDIParentFrame::DoHandleMenu)
+    EVT_UPDATE_UI (wxID_ANY, wxAuiMDIParentFrame::DoHandleUpdateUI)
 #endif
 END_EVENT_TABLE()
 
@@ -347,6 +348,35 @@ void wxAuiMDIParentFrame::DoHandleMenu(wxCommandEvent& event)
             event.Skip();
     }
 }
+
+void wxAuiMDIParentFrame::DoHandleUpdateUI(wxUpdateUIEvent& event)
+{
+    switch (event.GetId())
+    {
+        case wxWINDOWCLOSE:
+        case wxWINDOWCLOSEALL:
+        {
+            wxAuiMDIClientWindow* client_window = GetClientWindow();
+            wxCHECK_RET(client_window, wxS("Missing MDI Client Window"));
+            size_t pages = client_window->GetPageCount();
+            event.Enable(pages >= 1);
+            break;
+        }
+
+        case wxWINDOWNEXT:
+        case wxWINDOWPREV:
+        {
+            wxAuiMDIClientWindow* client_window = GetClientWindow();
+            wxCHECK_RET(client_window, wxS("Missing MDI Client Window"));
+            size_t pages = client_window->GetPageCount();
+            event.Enable(pages >= 2);
+            break;
+        }
+
+        default:
+            event.Skip();
+    }
+}
 #endif // wxUSE_MENUS
 
 void wxAuiMDIParentFrame::DoGetClientSize(int* width, int* height) const
-- 
2.47.2