layout/mathml/base/src/nsMathMLmactionFrame.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is Mozilla MathML Project.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * The University Of Queensland.
  19  * Portions created by the Initial Developer are Copyright (C) 1999
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Roger B. Sidje <rbs@maths.uq.edu.au>
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either of the GNU General Public License Version 2 or later (the "GPL"),
  27  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
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  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #ifndef nsMathMLmactionFrame_h___
  40 #define nsMathMLmactionFrame_h___
  41
  42 #include "nsCOMPtr.h"
  43 #include "nsMathMLContainerFrame.h"
  44
  45 //
  46 // <maction> -- bind actions to a subexpression
  47 //
  48
  49 //#define DEBUG_mouse 1
  50
  51 #if DEBUG_mouse
  52 #define MOUSE(_msg) printf("maction:%p MOUSE: "#_msg" ...\n", this);
  53 #else
  54 #define MOUSE(_msg)
  55 #endif
  56
  57 class nsMathMLmactionFrame : public nsMathMLContainerFrame,
  58                              public nsIDOMMouseListener {
  59 public:
  60   friend nsIFrame* NS_NewMathMLmactionFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
  61
  62   NS_DECL_ISUPPORTS_INHERITED
  63
  64   NS_IMETHOD
  65   Init(nsIContent*      aContent,
  66        nsIFrame*        aParent,
  67        nsIFrame*        aPrevInFlow);
  68
  69   NS_IMETHOD
  70   SetInitialChildList(nsIAtom*        aListName,
  71                       nsIFrame*       aChildList);
  72
  73   virtual nsresult
  74   ChildListChanged(PRInt32 aModType);
  75
  76   NS_IMETHOD BuildDisplayList(nsDisplayListBuilder*   aBuilder,
  77                               const nsRect&           aDirtyRect,
  78                               const nsDisplayListSet& aLists);
  79
  80   virtual nsresult
  81   Place(nsIRenderingContext& aRenderingContext,
  82         PRBool               aPlaceOrigin,
  83         nsHTMLReflowMetrics& aDesiredSize);
  84
  85   NS_IMETHOD
  86   Reflow(nsPresContext*          aPresContext,
  87          nsHTMLReflowMetrics&     aDesiredSize,
  88          const nsHTMLReflowState& aReflowState,
  89          nsReflowStatus&          aStatus);
  90
  91   // nsIDOMMouseListener methods
  92   NS_IMETHOD MouseDown(nsIDOMEvent* aMouseEvent)  { MOUSE(down) return NS_OK; }
  93   NS_IMETHOD MouseUp(nsIDOMEvent* aMouseEvent) { MOUSE(up) return NS_OK; }
  94   NS_IMETHOD MouseClick(nsIDOMEvent* aMouseEvent);// { MOUSE(click) return NS_OK; }
  95   NS_IMETHOD MouseDblClick(nsIDOMEvent* aMouseEvent) { MOUSE(dblclik) return NS_OK; }
  96   NS_IMETHOD MouseOver(nsIDOMEvent* aMouseEvent);// { MOUSE(over) return NS_OK; }
  97   NS_IMETHOD MouseOut(nsIDOMEvent* aMouseEvent);// { MOUSE(out) return NS_OK; }
  98
  99   // nsIDOMEventListener methods
 100   NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent)  { MOUSE(event); return NS_OK; }
 101
 102 protected:
 103   nsMathMLmactionFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
 104   virtual ~nsMathMLmactionFrame();
 105
 106   virtual PRIntn GetSkipSides() const { return 0; }
 107
 108 private:
 109   PRInt32         mActionType;
 110   PRInt32         mChildCount;
 111   PRInt32         mSelection;
 112   nsIFrame*       mSelectedFrame;
 113   nsString        mRestyle;
 114
 115   // helper to return the frame for the attribute selection="number"
 116   nsIFrame*
 117   GetSelectedFrame();
 118
 119   // helper to display a message on the status bar
 120   static nsresult
 121   ShowStatus(nsPresContext* aPresContext,
 122              nsString&       aStatusMsg);
 123 };
 124
 125 #endif /* nsMathMLmactionFrame_h___ */