layout/style/nsRuleData.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
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   8  * http://www.mozilla.org/MPL/
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  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 Communicator client code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998
  20  * the Initial Developer. All Rights Reserved.
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  22  * Contributor(s):
  23  *   Original Author: David W. Hyatt (hyatt@netscape.com)
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  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"),
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  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 /*
  40  * temporary (expanded) representation of property-value pairs used to
  41  * hold data from matched rules during style data computation.
  42  */
  43
  44 #ifndef nsRuleData_h_
  45 #define nsRuleData_h_
  46
  47 #include "nsCSSProps.h"
  48 #include "nsCSSStruct.h"
  49 #include "nsStyleStructFwd.h"
  50
  51 class nsPresContext;
  52 class nsStyleContext;
  53 struct nsRuleData;
  54
  55 typedef void (*nsPostResolveFunc)(void* aStyleStruct, nsRuleData* aData);
  56
  57 struct nsRuleData
  58 {
  59   PRUint32 mSIDs;
  60   PRPackedBool mCanStoreInRuleTree;
  61   PRPackedBool mIsImportantRule;
  62   PRUint8 mLevel; // an nsStyleSet::sheetType
  63   nsPresContext* mPresContext;
  64   nsStyleContext* mStyleContext;
  65   nsPostResolveFunc mPostResolveCallback;
  66
  67   // Should always be stack-allocated! We don't own these structures!
  68   nsRuleDataFont* mFontData;
  69   nsRuleDataDisplay* mDisplayData;
  70   nsRuleDataMargin* mMarginData;
  71   nsRuleDataList* mListData;
  72   nsRuleDataPosition* mPositionData;
  73   nsRuleDataTable* mTableData;
  74   nsRuleDataColor* mColorData;
  75   nsRuleDataContent* mContentData;
  76   nsRuleDataText* mTextData;
  77   nsRuleDataUserInterface* mUserInterfaceData;
  78   nsRuleDataXUL* mXULData;
  79   nsRuleDataSVG* mSVGData;
  80   nsRuleDataColumn* mColumnData;
  81
  82   nsRuleData(PRUint32 aSIDs,
  83              nsPresContext* aContext,
  84              nsStyleContext* aStyleContext)
  85     : mSIDs(aSIDs),
  86       mCanStoreInRuleTree(PR_TRUE),
  87       mPresContext(aContext),
  88       mStyleContext(aStyleContext),
  89       mPostResolveCallback(nsnull),
  90       mFontData(nsnull),
  91       mDisplayData(nsnull),
  92       mMarginData(nsnull),
  93       mListData(nsnull),
  94       mPositionData(nsnull),
  95       mTableData(nsnull),
  96       mColorData(nsnull),
  97       mContentData(nsnull),
  98       mTextData(nsnull),
  99       mUserInterfaceData(nsnull),
 100       mXULData(nsnull),
 101       mSVGData(nsnull),
 102       mColumnData(nsnull)
 103   {}
 104   ~nsRuleData() {}
 105
 106   /**
 107    * Return a pointer to the value object within |this| corresponding
 108    * to property |aProperty|, or null if storage for that property has
 109    * not been allocated.
 110    */
 111   nsCSSValue* ValueFor(nsCSSProperty aProperty);
 112 };
 113
 114 #endif