layout/xul/nsMenuBarListener.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 #ifndef nsMenuBarListener_h__
   6 #define nsMenuBarListener_h__
   7
   8 #include "mozilla/Attributes.h"
   9 #include "mozilla/EventForwards.h"
  10 #include "nsIDOMEventListener.h"
  11
  12 // X.h defines KeyPress
  13 #ifdef KeyPress
  14 #undef KeyPress
  15 #endif
  16
  17 class nsMenuBarFrame;
  18 class nsIDOMKeyEvent;
  19
  20 /** editor Implementation of the DragListener interface
  21  */
  22 class nsMenuBarListener MOZ_FINAL : public nsIDOMEventListener
  23 {
  24 public:
  25   /** default constructor
  26    */
  27   explicit nsMenuBarListener(nsMenuBarFrame* aMenuBar);
  28
  29   static void InitializeStatics();
  30
  31   NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent) MOZ_OVERRIDE;
  32
  33   nsresult KeyUp(nsIDOMEvent* aMouseEvent);
  34   nsresult KeyDown(nsIDOMEvent* aMouseEvent);
  35   nsresult KeyPress(nsIDOMEvent* aMouseEvent);
  36   nsresult Blur(nsIDOMEvent* aEvent);
  37   nsresult MouseDown(nsIDOMEvent* aMouseEvent);
  38
  39   static nsresult GetMenuAccessKey(int32_t* aAccessKey);
  40
  41   NS_DECL_ISUPPORTS
  42
  43   static bool IsAccessKeyPressed(nsIDOMKeyEvent* event);
  44
  45 protected:
  46   /** default destructor
  47    */
  48   virtual ~nsMenuBarListener();
  49
  50   static void InitAccessKey();
  51
  52   static mozilla::Modifiers GetModifiersForAccessKey(nsIDOMKeyEvent* event);
  53
  54   // This should only be called by the nsMenuBarListener during event dispatch,
  55   // thus ensuring that this doesn't get destroyed during the process.
  56   void ToggleMenuActiveState();
  57
  58   nsMenuBarFrame* mMenuBarFrame; // The menu bar object.
  59   // Whether or not the ALT key is currently down.
  60   bool mAccessKeyDown;
  61   // Whether or not the ALT key down is canceled by other action.
  62   bool mAccessKeyDownCanceled;
  63   static bool mAccessKeyFocuses; // Does the access key by itself focus the menubar?
  64   static int32_t mAccessKey;     // See nsIDOMKeyEvent.h for sample values
  65   static mozilla::Modifiers mAccessKeyMask;// Modifier mask for the access key
  66 };
  67
  68
  69 #endif