From bcf014878689fa97b8c67372ad616a398b245807 Mon Sep 17 00:00:00 2001
From: David Elliott <dfe@tgwbd.org>
Date: Fri, 5 Sep 2003 14:50:31 +0000
Subject: [PATCH] Added ability to observe NSMenu notifications

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23403 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 include/wx/cocoa/NSMenu.h | 19 +++++++-
 src/cocoa/NSMenu.mm       | 92 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 110 insertions(+), 1 deletion(-)

diff --git a/include/wx/cocoa/NSMenu.h b/include/wx/cocoa/NSMenu.h
index 354d4738d4..c0ce05205e 100644
--- a/include/wx/cocoa/NSMenu.h
+++ b/include/wx/cocoa/NSMenu.h
@@ -23,7 +23,24 @@ WX_DECLARE_OBJC_HASHMAP(NSMenu);
 
 class wxCocoaNSMenu
 {
-    WX_DECLARE_OBJC_INTERFACE(NSMenu)
+    WX_DECLARE_OBJC_INTERFACE_HASHMAP(NSMenu)
+public:
+    void AssociateNSMenu(WX_NSMenu cocoaNSMenu, unsigned int flags = 0);
+    void DisassociateNSMenu(WX_NSMenu cocoaNSMenu);
+    enum
+    {   OBSERVE_DidAddItem          = 0x01
+    ,   OBSERVE_DidChangeItem       = 0x02
+    ,   OBSERVE_DidRemoveItem       = 0x04
+    ,   OBSERVE_DidSendAction       = 0x08
+    ,   OBSERVE_WillSendAction      = 0x10
+    };
+    void CocoaNotification_menuDidAddItem(WX_NSNotification userInfo) {}
+    void CocoaNotification_menuDidChangeItem(WX_NSNotification userInfo) {}
+    void CocoaNotification_menuDidRemoveItem(WX_NSNotification userInfo) {}
+    void CocoaNotification_menuDidSendAction(WX_NSNotification userInfo) {}
+    void CocoaNotification_menuWillSendAction(WX_NSNotification userInfo) {}
+protected:
+    static struct objc_object *sm_cocoaObserver;
 };
 
 #endif // _WX_COCOA_NSMENU_H_
diff --git a/src/cocoa/NSMenu.mm b/src/cocoa/NSMenu.mm
index bbf68e96d5..ca226efa44 100644
--- a/src/cocoa/NSMenu.mm
+++ b/src/cocoa/NSMenu.mm
@@ -18,6 +18,9 @@
 #include "wx/cocoa/NSMenu.h"
 //#include "wx/cocoa/ObjcPose.h"
 
+#import <Foundation/NSNotification.h>
+#import <AppKit/NSMenu.h>
+
 #if 0 // There is no reason to pose for NSMenu at this time.
 // ============================================================================
 // @class wxPoserNSMenu
@@ -34,4 +37,93 @@ WX_IMPLEMENT_POSER(wxPoserNSMenu);
 @end // wxPoserNSMenu
 #endif // 0
 
+// ============================================================================
+// @class wxNSMenuNotificationObserver
+// ============================================================================
+@interface wxNSMenuNotificationObserver : NSObject
+{
+}
+
+struct objc_object *wxCocoaNSMenu::sm_cocoaObserver = [[wxNSMenuNotificationObserver alloc] init];
+
+- (void)menuDidAddItem: (NSNotification *)notification;
+- (void)menuDidChangeItem: (NSNotification *)notification;
+- (void)menuDidRemoveItem: (NSNotification *)notification;
+- (void)menuDidSendAction: (NSNotification *)notification;
+- (void)menuWillSendAction: (NSNotification *)notification;
+@end // interface wxNSMenuNotificationObserver
+
+@implementation wxNSMenuNotificationObserver : NSObject
+
+- (void)menuDidAddItem: (NSNotification *)notification
+{
+    wxCocoaNSMenu *menu = wxCocoaNSMenu::GetFromCocoa([notification object]);
+    wxCHECK_RET(menu,"menuDidAddItem received but no wxMenu exists");
+    menu->CocoaNotification_menuDidAddItem(notification);
+}
+
+- (void)menuDidChangeItem: (NSNotification *)notification
+{
+    wxCocoaNSMenu *menu = wxCocoaNSMenu::GetFromCocoa([notification object]);
+    wxCHECK_RET(menu,"menuDidChangeItem received but no wxMenu exists");
+    menu->CocoaNotification_menuDidChangeItem(notification);
+}
+
+- (void)menuDidRemoveItem: (NSNotification *)notification
+{
+    wxCocoaNSMenu *menu = wxCocoaNSMenu::GetFromCocoa([notification object]);
+    wxCHECK_RET(menu,"menuDidRemoveItem received but no wxMenu exists");
+    menu->CocoaNotification_menuDidRemoveItem(notification);
+}
+
+- (void)menuDidSendAction: (NSNotification *)notification
+{
+    wxCocoaNSMenu *menu = wxCocoaNSMenu::GetFromCocoa([notification object]);
+    wxCHECK_RET(menu,"menuDidSendAction received but no wxMenu exists");
+    menu->CocoaNotification_menuDidSendAction(notification);
+}
+
+- (void)menuWillSendAction: (NSNotification *)notification
+{
+    wxCocoaNSMenu *menu = wxCocoaNSMenu::GetFromCocoa([notification object]);
+    wxCHECK_RET(menu,"menuWillSendAction received but no wxMenu exists");
+    menu->CocoaNotification_menuWillSendAction(notification);
+}
+
+@end // implementation wxNSMenuNotificationObserver
+
+// ========================================================================
+// wxCocoaNSMenu
+// ========================================================================
+void wxCocoaNSMenu::AssociateNSMenu(WX_NSMenu cocoaNSMenu, unsigned int flags)
+{
+    if(cocoaNSMenu)
+    {
+        sm_cocoaHash.insert(wxCocoaNSMenuHash::value_type(cocoaNSMenu,this));
+        if(flags&OBSERVE_DidAddItem)
+            [[NSNotificationCenter defaultCenter] addObserver:(id)sm_cocoaObserver selector:@selector(menuDidAddItem:) name:NSMenuDidAddItemNotification object:cocoaNSMenu];
+        if(flags&OBSERVE_DidChangeItem)
+            [[NSNotificationCenter defaultCenter] addObserver:(id)sm_cocoaObserver selector:@selector(menuDidChangeItem:) name:NSMenuDidChangeItemNotification object:cocoaNSMenu];
+        if(flags&OBSERVE_DidRemoveItem)
+            [[NSNotificationCenter defaultCenter] addObserver:(id)sm_cocoaObserver selector:@selector(menuDidRemoveItem:) name:NSMenuDidRemoveItemNotification object:cocoaNSMenu];
+        if(flags&OBSERVE_DidSendAction)
+            [[NSNotificationCenter defaultCenter] addObserver:(id)sm_cocoaObserver selector:@selector(menuDidSendAction:) name:NSMenuDidSendActionNotification object:cocoaNSMenu];
+        if(flags&OBSERVE_WillSendAction)
+            [[NSNotificationCenter defaultCenter] addObserver:(id)sm_cocoaObserver selector:@selector(menuWillSendAction:) name:NSMenuWillSendActionNotification object:cocoaNSMenu];
+    }
+}
+
+void wxCocoaNSMenu::DisassociateNSMenu(WX_NSMenu cocoaNSMenu)
+{
+    if(cocoaNSMenu)
+    {
+        sm_cocoaHash.erase(cocoaNSMenu);
+        [[NSNotificationCenter defaultCenter] removeObserver:(id)sm_cocoaObserver name:NSMenuDidAddItemNotification object:cocoaNSMenu];
+        [[NSNotificationCenter defaultCenter] removeObserver:(id)sm_cocoaObserver name:NSMenuDidChangeItemNotification object:cocoaNSMenu];
+        [[NSNotificationCenter defaultCenter] removeObserver:(id)sm_cocoaObserver name:NSMenuDidRemoveItemNotification object:cocoaNSMenu];
+        [[NSNotificationCenter defaultCenter] removeObserver:(id)sm_cocoaObserver name:NSMenuDidSendActionNotification object:cocoaNSMenu];
+        [[NSNotificationCenter defaultCenter] removeObserver:(id)sm_cocoaObserver name:NSMenuWillSendActionNotification object:cocoaNSMenu];
+    }
+}
+
 #endif // wxUSE_MENUS
-- 
2.47.2