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
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
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 : //
40 : // a helper frame class to wrap non-MathML frames so that foreign elements
41 : // (e.g., html:img) can mix better with other surrounding MathML markups
42 : //
43 :
44 : #ifndef nsMathMLForeignFrameWrapper_h___
45 : #define nsMathMLForeignFrameWrapper_h___
46 :
47 : #include "nsCOMPtr.h"
48 : #include "nsMathMLContainerFrame.h"
49 :
50 : class nsMathMLForeignFrameWrapper : public nsBlockFrame,
51 : public nsMathMLFrame {
52 : public:
53 : friend nsIFrame* NS_NewMathMLForeignFrameWrapper(nsIPresShell* aPresShell, nsStyleContext* aContext);
54 :
55 : NS_DECL_QUERYFRAME
56 : NS_DECL_FRAMEARENA_HELPERS
57 :
58 : // Overloaded nsIMathMLFrame methods
59 :
60 : NS_IMETHOD
61 0 : UpdatePresentationDataFromChildAt(PRInt32 aFirstIndex,
62 : PRInt32 aLastIndex,
63 : PRUint32 aFlagsValues,
64 : PRUint32 aFlagsToUpdate)
65 : {
66 : nsMathMLContainerFrame::PropagatePresentationDataFromChildAt(this,
67 0 : aFirstIndex, aLastIndex, aFlagsValues, aFlagsToUpdate);
68 0 : return NS_OK;
69 : }
70 :
71 : // overloaded nsBlockFrame methods
72 :
73 : #ifdef NS_DEBUG
74 : NS_IMETHOD
75 0 : SetInitialChildList(ChildListID aListID,
76 : nsFrameList& aChildList)
77 : {
78 0 : NS_ASSERTION(aChildList.NotEmpty() && aChildList.GetLength() == 1,
79 : "there must be one and only one child frame");
80 0 : return nsBlockFrame::SetInitialChildList(aListID, aChildList);
81 : }
82 : #endif
83 :
84 : NS_IMETHOD
85 : Reflow(nsPresContext* aPresContext,
86 : nsHTMLReflowMetrics& aDesiredSize,
87 : const nsHTMLReflowState& aReflowState,
88 : nsReflowStatus& aStatus);
89 :
90 : // we are just a wrapper and these methods shouldn't be called
91 : NS_IMETHOD
92 0 : AppendFrames(ChildListID aListID,
93 : nsFrameList& aFrameList)
94 : {
95 0 : NS_NOTREACHED("unsupported operation");
96 0 : return NS_ERROR_NOT_IMPLEMENTED;
97 : }
98 :
99 : NS_IMETHOD
100 0 : InsertFrames(ChildListID aListID,
101 : nsIFrame* aPrevFrame,
102 : nsFrameList& aFrameList)
103 : {
104 0 : NS_NOTREACHED("unsupported operation");
105 0 : return NS_ERROR_NOT_IMPLEMENTED;
106 : }
107 :
108 : // Our life is bound to the life of our unique child.
109 : // When our child goes away, we ask our parent to delete us
110 : NS_IMETHOD
111 0 : RemoveFrame(ChildListID aListID,
112 : nsIFrame* aOldFrame)
113 : {
114 0 : return mParent->RemoveFrame(aListID, this);
115 : }
116 :
117 : protected:
118 0 : nsMathMLForeignFrameWrapper(nsStyleContext* aContext) : nsBlockFrame(aContext) {}
119 0 : virtual ~nsMathMLForeignFrameWrapper() {}
120 : };
121 :
122 : #endif /* nsMathMLForeignFrameWrapper_h___ */
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