layout/mathml/nsMathMLmactionFrame.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 nsMathMLmactionFrame_h___
   7 #define nsMathMLmactionFrame_h___
   8
   9 #include "nsCOMPtr.h"
  10 #include "nsMathMLSelectedFrame.h"
  11 #include "nsIDOMEventListener.h"
  12 #include "mozilla/Attributes.h"
  13
  14 //
  15 // <maction> -- bind actions to a subexpression
  16 //
  17
  18 class nsMathMLmactionFrame : public nsMathMLSelectedFrame {
  19 public:
  20   NS_DECL_FRAMEARENA_HELPERS
  21
  22   friend nsIFrame* NS_NewMathMLmactionFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
  23
  24   virtual void
  25   Init(nsIContent*       aContent,
  26        nsContainerFrame* aParent,
  27        nsIFrame*         aPrevInFlow) MOZ_OVERRIDE;
  28
  29   virtual void
  30   SetInitialChildList(ChildListID     aListID,
  31                       nsFrameList&    aChildList) MOZ_OVERRIDE;
  32
  33   virtual nsresult
  34   ChildListChanged(int32_t aModType) MOZ_OVERRIDE;
  35
  36   virtual nsresult
  37   AttributeChanged(int32_t  aNameSpaceID,
  38                    nsIAtom* aAttribute,
  39                    int32_t  aModType) MOZ_OVERRIDE;
  40
  41 private:
  42   void MouseClick();
  43   void MouseOver();
  44   void MouseOut();
  45
  46   class MouseListener MOZ_FINAL : public nsIDOMEventListener
  47   {
  48   private:
  49     ~MouseListener() {}
  50
  51   public:
  52     NS_DECL_ISUPPORTS
  53     NS_DECL_NSIDOMEVENTLISTENER
  54
  55     explicit MouseListener(nsMathMLmactionFrame* aOwner) : mOwner(aOwner) { }
  56
  57     nsMathMLmactionFrame* mOwner;
  58   };
  59
  60 protected:
  61   explicit nsMathMLmactionFrame(nsStyleContext* aContext) :
  62     nsMathMLSelectedFrame(aContext) {}
  63   virtual ~nsMathMLmactionFrame();
  64
  65 private:
  66   int32_t         mActionType;
  67   int32_t         mChildCount;
  68   int32_t         mSelection;
  69   nsRefPtr<MouseListener> mListener;
  70
  71   // helper to return the frame for the attribute selection="number"
  72   nsIFrame*
  73   GetSelectedFrame() MOZ_OVERRIDE;
  74 };
  75
  76 #endif /* nsMathMLmactionFrame_h___ */