widget/cocoa/nsMenuGroupOwnerX.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsMenuGroupOwnerX_h_
   7 #define nsMenuGroupOwnerX_h_
   8
   9 #import <Cocoa/Cocoa.h>
  10
  11 #include "mozilla/WeakPtr.h"
  12
  13 #include "nsIMutationObserver.h"
  14 #include "nsHashKeys.h"
  15 #include "nsIObserver.h"
  16 #include "nsTHashMap.h"
  17 #include "nsString.h"
  18
  19 class nsMenuBarX;
  20 class nsMenuItemX;
  21 class nsChangeObserver;
  22 class nsIWidget;
  23 class nsIContent;
  24
  25 @class MOZMenuItemRepresentedObject;
  26
  27 // Fixed command IDs that work even without a JS listener, for our fallback menu bar.
  28 // Dynamic command IDs start counting from eCommand_ID_Last.
  29 enum {
  30   eCommand_ID_About = 1,
  31   eCommand_ID_Prefs = 2,
  32   eCommand_ID_Quit = 3,
  33   eCommand_ID_HideApp = 4,
  34   eCommand_ID_HideOthers = 5,
  35   eCommand_ID_ShowAll = 6,
  36   eCommand_ID_Update = 7,
  37   eCommand_ID_TouchBar = 8,
  38   eCommand_ID_Account = 9,
  39   eCommand_ID_Last = 10
  40 };
  41
  42 // The menu group owner observes DOM mutations, notifies registered nsChangeObservers, and manages
  43 // command registration.
  44 // There is one owner per menubar, and one per standalone native menu.
  45 class nsMenuGroupOwnerX : public nsIMutationObserver, public nsIObserver {
  46  public:
  47   // Both parameters can be null.
  48   nsMenuGroupOwnerX(mozilla::dom::Element* aElement, nsMenuBarX* aMenuBarIfMenuBar);
  49
  50   void RegisterForContentChanges(nsIContent* aContent, nsChangeObserver* aMenuObject);
  51   void UnregisterForContentChanges(nsIContent* aContent);
  52   uint32_t RegisterForCommand(nsMenuItemX* aMenuItem);
  53   void UnregisterCommand(uint32_t aCommandID);
  54   nsMenuItemX* GetMenuItemForCommandID(uint32_t aCommandID);
  55
  56   void RegisterForLocaleChanges();
  57   void UnregisterForLocaleChanges();
  58
  59   // The representedObject that's used for all menu items under this menu group owner.
  60   MOZMenuItemRepresentedObject* GetRepresentedObject() { return mRepresentedObject; }
  61
  62   // If this is the group owner for a menubar, return the menubar, otherwise nullptr.
  63   nsMenuBarX* GetMenuBar() { return mMenuBar.get(); }
  64
  65   NS_DECL_ISUPPORTS
  66   NS_DECL_NSIOBSERVER
  67   NS_DECL_NSIMUTATIONOBSERVER
  68
  69  protected:
  70   virtual ~nsMenuGroupOwnerX();
  71
  72   nsChangeObserver* LookupContentChangeObserver(nsIContent* aContent);
  73
  74   RefPtr<nsIContent> mContent;
  75
  76   // Unique command id (per menu-bar) to give to next item that asks.
  77   uint32_t mCurrentCommandID = eCommand_ID_Last;
  78
  79   // stores observers for content change notification
  80   nsTHashMap<nsPtrHashKey<nsIContent>, nsChangeObserver*> mContentToObserverTable;
  81
  82   // stores mapping of command IDs to menu objects
  83   nsTHashMap<nsUint32HashKey, nsMenuItemX*> mCommandToMenuObjectTable;
  84
  85   MOZMenuItemRepresentedObject* mRepresentedObject = nil;  // [strong]
  86   mozilla::WeakPtr<nsMenuBarX> mMenuBar;
  87 };
  88
  89 @interface MOZMenuItemRepresentedObject : NSObject
  90 - (id)initWithMenuGroupOwner:(nsMenuGroupOwnerX*)aMenuGroupOwner;
  91 - (void)setMenuGroupOwner:(nsMenuGroupOwnerX*)aMenuGroupOwner;
  92 - (nsMenuGroupOwnerX*)menuGroupOwner;
  93 @end
  94
  95 #endif  // nsMenuGroupOwner_h_