зеркало из https://github.com/mozilla/gecko-dev.git
576 строки
24 KiB
C++
576 строки
24 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Original Author: David W. Hyatt (hyatt@netscape.com)
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsRuleNode_h___
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#define nsRuleNode_h___
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#include "nsCOMPtr.h"
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#include "nsIStyleRule.h"
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#include "nsIFrame.h"
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#include "nsFixedSizeAllocator.h"
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#include "nsIPresContext.h"
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#include "nsCSSDeclaration.h"
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#include "nsILanguageAtomService.h"
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class nsIStyleContext;
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struct nsRuleList;
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struct PLDHashTable;
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typedef void (*nsPostResolveFunc)(nsStyleStruct* aStyleStruct, nsRuleData* aData);
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struct nsInheritedStyleData
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{
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#define STYLE_STRUCT_INHERITED(name, checkdata_cb) \
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nsStyle##name * m##name##Data;
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#define STYLE_STRUCT_RESET(name, checkdata_cb)
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT_INHERITED
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#undef STYLE_STRUCT_RESET
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void* operator new(size_t sz, nsIPresContext* aContext) CPP_THROW_NEW {
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void* result = nsnull;
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aContext->AllocateFromShell(sz, &result);
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return result;
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};
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void ClearInheritedData(PRUint32 aBits) {
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#define STYLE_STRUCT_INHERITED(name, checkdata_cb) \
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if (m##name##Data && (aBits & NS_STYLE_INHERIT_BIT(name))) \
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m##name##Data = nsnull;
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#define STYLE_STRUCT_RESET(name, checkdata_cb)
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT_INHERITED
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#undef STYLE_STRUCT_RESET
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};
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void Destroy(PRUint32 aBits, nsIPresContext* aContext) {
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#define STYLE_STRUCT_INHERITED(name, checkdata_cb) \
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if (m##name##Data && !(aBits & NS_STYLE_INHERIT_BIT(name))) \
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m##name##Data->Destroy(aContext);
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#define STYLE_STRUCT_RESET(name, checkdata_cb)
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT_INHERITED
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#undef STYLE_STRUCT_RESET
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aContext->FreeToShell(sizeof(nsInheritedStyleData), this);
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};
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nsInheritedStyleData() {
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#define STYLE_STRUCT_INHERITED(name, checkdata_cb) \
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m##name##Data = nsnull;
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#define STYLE_STRUCT_RESET(name, checkdata_cb)
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT_INHERITED
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#undef STYLE_STRUCT_RESET
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};
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};
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struct nsResetStyleData
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{
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nsResetStyleData()
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{
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#define STYLE_STRUCT_RESET(name, checkdata_cb) \
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m##name##Data = nsnull;
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#define STYLE_STRUCT_INHERITED(name, checkdata_cb)
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT_RESET
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#undef STYLE_STRUCT_INHERITED
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};
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void* operator new(size_t sz, nsIPresContext* aContext) CPP_THROW_NEW {
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void* result = nsnull;
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aContext->AllocateFromShell(sz, &result);
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return result;
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}
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void ClearInheritedData(PRUint32 aBits) {
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#define STYLE_STRUCT_RESET(name, checkdata_cb) \
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if (m##name##Data && (aBits & NS_STYLE_INHERIT_BIT(name))) \
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m##name##Data = nsnull;
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#define STYLE_STRUCT_INHERITED(name, checkdata_cb)
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT_RESET
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#undef STYLE_STRUCT_INHERITED
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};
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void Destroy(PRUint32 aBits, nsIPresContext* aContext) {
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#define STYLE_STRUCT_RESET(name, checkdata_cb) \
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if (m##name##Data && !(aBits & NS_STYLE_INHERIT_BIT(name))) \
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m##name##Data->Destroy(aContext);
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#define STYLE_STRUCT_INHERITED(name, checkdata_cb)
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT_RESET
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#undef STYLE_STRUCT_INHERITED
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aContext->FreeToShell(sizeof(nsResetStyleData), this);
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};
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#define STYLE_STRUCT_RESET(name, checkdata_cb) \
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nsStyle##name * m##name##Data;
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#define STYLE_STRUCT_INHERITED(name, checkdata_cb)
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#include "nsStyleStructList.h"
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#undef STYLE_STRUCT_RESET
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#undef STYLE_STRUCT_INHERITED
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};
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struct nsCachedStyleData
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{
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struct StyleStructInfo {
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ptrdiff_t mCachedStyleDataOffset;
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ptrdiff_t mInheritResetOffset;
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PRBool mIsReset;
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};
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static StyleStructInfo gInfo[];
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nsInheritedStyleData* mInheritedData;
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nsResetStyleData* mResetData;
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static PRBool IsReset(const nsStyleStructID& aSID) {
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return gInfo[aSID].mIsReset;
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};
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static PRUint32 GetBitForSID(const nsStyleStructID& aSID) {
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return 1 << aSID;
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};
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nsStyleStruct* GetStyleData(const nsStyleStructID& aSID) {
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// Each struct is stored at this.m##type##Data->m##name##Data where
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// |type| is either Inherit or Reset, and |name| is the name of the
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// style struct. The |gInfo| stores the offset of the appropriate
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// m##type##Data for the struct within nsCachedStyleData (|this|)
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// and the offset of the appropriate m##name##Data within the
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// m##type##Data. Note that if we don't have any reset structs,
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// then mResetData is null, and likewise for mInheritedData. This
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// saves us from having to go through the long if-else cascade into
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// which most compilers will turn a case statement.
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// NOTE: nsStyleContext::SetStyle works roughly the same way.
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const StyleStructInfo& info = gInfo[aSID];
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// Get either &mInheritedData or &mResetData.
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char* resetOrInheritSlot = NS_REINTERPRET_CAST(char*, this) + info.mCachedStyleDataOffset;
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// Get either mInheritedData or mResetData.
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char* resetOrInherit = NS_REINTERPRET_CAST(char*, *NS_REINTERPRET_CAST(void**, resetOrInheritSlot));
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nsStyleStruct* data = nsnull;
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if (resetOrInherit) {
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// If we have the mInheritedData or mResetData, then we might have
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// the struct, so get it.
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char* dataSlot = resetOrInherit + info.mInheritResetOffset;
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data = *NS_REINTERPRET_CAST(nsStyleStruct**, dataSlot);
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}
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return data;
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};
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void ClearInheritedData(PRUint32 aBits) {
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if (mResetData)
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mResetData->ClearInheritedData(aBits);
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if (mInheritedData)
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mInheritedData->ClearInheritedData(aBits);
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}
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void Destroy(PRUint32 aBits, nsIPresContext* aContext) {
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if (mResetData)
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mResetData->Destroy(aBits, aContext);
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if (mInheritedData)
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mInheritedData->Destroy(aBits, aContext);
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mResetData = nsnull;
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mInheritedData = nsnull;
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}
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nsCachedStyleData() :mInheritedData(nsnull), mResetData(nsnull) {};
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~nsCachedStyleData() {};
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};
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struct nsRuleData
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{
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nsStyleStructID mSID;
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PRPackedBool mCanStoreInRuleTree;
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nsIPresContext* mPresContext;
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nsIStyleContext* mStyleContext;
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nsPostResolveFunc mPostResolveCallback;
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nsCSSFont* mFontData; // Should always be stack-allocated! We don't own these structures!
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nsCSSDisplay* mDisplayData;
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nsCSSMargin* mMarginData;
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nsCSSList* mListData;
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nsCSSPosition* mPositionData;
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nsCSSTable* mTableData;
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nsCSSColor* mColorData;
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nsCSSContent* mContentData;
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nsCSSText* mTextData;
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nsCSSUserInterface* mUIData;
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#ifdef INCLUDE_XUL
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nsCSSXUL* mXULData;
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#endif
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#ifdef MOZ_SVG
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nsCSSSVG* mSVGData;
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#endif
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nsRuleData(const nsStyleStructID& aSID, nsIPresContext* aContext, nsIStyleContext* aStyleContext)
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:mSID(aSID), mPresContext(aContext), mStyleContext(aStyleContext), mPostResolveCallback(nsnull),
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mFontData(nsnull), mDisplayData(nsnull), mMarginData(nsnull), mListData(nsnull),
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mPositionData(nsnull), mTableData(nsnull), mColorData(nsnull), mContentData(nsnull), mTextData(nsnull),
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mUIData(nsnull)
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{
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mCanStoreInRuleTree = PR_TRUE;
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#ifdef INCLUDE_XUL
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mXULData = nsnull;
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#endif
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#ifdef MOZ_SVG
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mSVGData = nsnull;
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#endif
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};
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~nsRuleData() {};
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};
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class nsRuleNode {
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public:
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// for purposes of the RuleDetail (and related code),
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// * a non-inherited value is one that is specified as a
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// non-"inherit" value or as an "inherit" value that is reflected
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// in the struct and to the user of the style system with an
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// eCSSUnit_Inherit value
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// * an inherited value is one that is specified as "inherit" and
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// where the inheritance is computed by the style system
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enum RuleDetail {
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eRuleNone, // No props have been specified at all.
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eRulePartialReset, // At least one prop with a non-inherited value
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// has been specified. No props have been
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// specified with an inherited value. At least
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// one prop remains unspecified.
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eRulePartialMixed, // At least one prop with a non-inherited value
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// has been specified. Some props may also have
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// been specified with an inherited value. At
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// least one prop remains unspecified.
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eRulePartialInherited, // Only props with inherited values have
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// have been specified. At least one prop
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// remains unspecified.
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eRuleFullReset, // All props have been specified. None has an
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// inherited value.
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eRuleFullMixed, // All props have been specified. At least one has
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// a non-inherited value.
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eRuleFullInherited, // All props have been specified with inherited
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// values.
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eRuleUnknown // Information unknown (used as a result from a check
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// callback to trigger the normal checking codepath)
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};
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enum { // Types of RuleBits
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eNoneBits,
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eDependentBits
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};
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private:
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nsIPresContext* mPresContext; // Our pres context.
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nsRuleNode* mParent; // A pointer to the parent node in the tree.
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// This enables us to walk backwards from the
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// most specific rule matched to the least
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// specific rule (which is the optimal order to
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// use for lookups of style properties.
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nsCOMPtr<nsIStyleRule> mRule; // A pointer to our specific rule.
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// The children of this node are stored in either a hashtable or list
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// that maps from rules to our nsRuleNode children. When matching
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// rules, we use this mapping to transition from node to node
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// (constructing new nodes as needed to flesh out the tree).
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void *mChildrenTaggedPtr; // Accessed only through the methods below.
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enum {
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kTypeMask = 0x1,
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kListType = 0x0,
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kHashType = 0x1
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};
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enum {
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// Maximum to have in a list before converting to a hashtable.
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// XXX Need to optimize this.
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kMaxChildrenInList = 32
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};
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PRBool HaveChildren() {
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return mChildrenTaggedPtr != nsnull;
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}
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PRBool ChildrenAreHashed() {
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return (PRWord(mChildrenTaggedPtr) & kTypeMask) == kHashType;
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}
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nsRuleList* ChildrenList() {
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return NS_REINTERPRET_CAST(nsRuleList*, mChildrenTaggedPtr);
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}
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PLDHashTable* ChildrenHash() {
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return (PLDHashTable*) (PRWord(mChildrenTaggedPtr) & ~PRWord(kTypeMask));
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}
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void SetChildrenList(nsRuleList *aList) {
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NS_ASSERTION(!(PRWord(aList) & kTypeMask),
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"pointer not 2-byte aligned");
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mChildrenTaggedPtr = aList;
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}
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void SetChildrenHash(PLDHashTable *aHashtable) {
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NS_ASSERTION(!(PRWord(aHashtable) & kTypeMask),
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"pointer not 2-byte aligned");
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mChildrenTaggedPtr = (void*)(PRWord(aHashtable) | kHashType);
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}
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void ConvertChildrenToHash();
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nsCachedStyleData mStyleData; // Any data we cached on the rule node.
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PRUint32 mDependentBits; // Used to cache the fact that we can look up
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// cached data under a parent rule.
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PRUint32 mNoneBits; // Used to cache the fact that the branch to this
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// node specifies no non-inherited data for a
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// given struct type. (This usually implies that
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// the entire branch specifies no non-inherited
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// data, although not necessarily, if a
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// non-inherited value is overridden by an
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// explicit 'inherit' value.) For example, if an
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// entire rule branch specifies no color
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// information, then a bit will be set along every
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// rule node on that branch, so that you can break
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// out of the rule tree early and just inherit
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// from the parent style context. The presence of
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// this bit means we should just get inherited
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// data from the parent style context, and it is
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// never used for reset structs since their
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// Compute*Data functions don't initialize from
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// inherited data.
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friend struct nsRuleList;
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public:
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// Overloaded new operator. Initializes the memory to 0 and relies on an arena
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// (which comes from the presShell) to perform the allocation.
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void* operator new(size_t sz, nsIPresContext* aContext) CPP_THROW_NEW;
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void Destroy();
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static nsILanguageAtomService *gLangService;
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protected:
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void PropagateDependentBit(PRUint32 aBit, nsRuleNode* aHighestNode);
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void PropagateNoneBit(PRUint32 aBit, nsRuleNode* aHighestNode);
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const nsStyleStruct* SetDefaultOnRoot(const nsStyleStructID aSID, nsIStyleContext* aContext);
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const nsStyleStruct* WalkRuleTree(const nsStyleStructID aSID, nsIStyleContext* aContext,
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nsRuleData* aRuleData,
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nsCSSStruct* aSpecificData,
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PRBool aComputeData);
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const nsStyleStruct* ComputeDisplayData(nsStyleStruct* aStartDisplay, const nsCSSStruct& aDisplayData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeVisibilityData(nsStyleStruct* aStartVisibility, const nsCSSStruct& aDisplayData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeFontData(nsStyleStruct* aStartFont, const nsCSSStruct& aFontData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeColorData(nsStyleStruct* aStartColor, const nsCSSStruct& aColorData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeBackgroundData(nsStyleStruct* aStartBackground, const nsCSSStruct& aColorData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeMarginData(nsStyleStruct* aStartMargin, const nsCSSStruct& aMarginData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeBorderData(nsStyleStruct* aStartBorder, const nsCSSStruct& aMarginData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputePaddingData(nsStyleStruct* aStartPadding, const nsCSSStruct& aMarginData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeOutlineData(nsStyleStruct* aStartOutline, const nsCSSStruct& aMarginData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeListData(nsStyleStruct* aStartList, const nsCSSStruct& aListData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputePositionData(nsStyleStruct* aStartPosition, const nsCSSStruct& aPositionData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeTableData(nsStyleStruct* aStartTable, const nsCSSStruct& aTableData,
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nsIStyleContext* aContext, nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeTableBorderData(nsStyleStruct* aStartTable, const nsCSSStruct& aTableData,
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nsIStyleContext* aContext,
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nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
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const nsStyleStruct* ComputeContentData(nsStyleStruct* aStartContent, const nsCSSStruct& aData,
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nsIStyleContext* aContext,
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nsRuleNode* aHighestNode,
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const RuleDetail& aRuleDetail, PRBool aInherited);
|
|
const nsStyleStruct* ComputeQuotesData(nsStyleStruct* aStartQuotes, const nsCSSStruct& aData,
|
|
nsIStyleContext* aContext,
|
|
nsRuleNode* aHighestNode,
|
|
const RuleDetail& aRuleDetail, PRBool aInherited);
|
|
const nsStyleStruct* ComputeTextData(nsStyleStruct* aStartData, const nsCSSStruct& aData,
|
|
nsIStyleContext* aContext,
|
|
nsRuleNode* aHighestNode,
|
|
const RuleDetail& aRuleDetail, PRBool aInherited);
|
|
const nsStyleStruct* ComputeTextResetData(nsStyleStruct* aStartData, const nsCSSStruct& aData,
|
|
nsIStyleContext* aContext,
|
|
nsRuleNode* aHighestNode,
|
|
const RuleDetail& aRuleDetail, PRBool aInherited);
|
|
const nsStyleStruct* ComputeUserInterfaceData(nsStyleStruct* aStartData,
|
|
const nsCSSStruct& aData,
|
|
nsIStyleContext* aContext,
|
|
nsRuleNode* aHighestNode,
|
|
const RuleDetail& aRuleDetail,
|
|
PRBool aInherited);
|
|
const nsStyleStruct* ComputeUIResetData(nsStyleStruct* aStartData, const nsCSSStruct& aData,
|
|
nsIStyleContext* aContext,
|
|
nsRuleNode* aHighestNode,
|
|
const RuleDetail& aRuleDetail, PRBool aInherited);
|
|
#ifdef INCLUDE_XUL
|
|
const nsStyleStruct* ComputeXULData(nsStyleStruct* aStartXUL, const nsCSSStruct& aXULData,
|
|
nsIStyleContext* aContext,
|
|
nsRuleNode* aHighestNode,
|
|
const RuleDetail& aRuleDetail, PRBool aInherited);
|
|
#endif
|
|
|
|
#ifdef MOZ_SVG
|
|
const nsStyleStruct* ComputeSVGData(nsStyleStruct* aStartSVG, const nsCSSStruct& aSVGData,
|
|
nsIStyleContext* aContext,
|
|
nsRuleNode* aHighestNode,
|
|
const RuleDetail& aRuleDetail, PRBool aInherited);
|
|
#endif
|
|
|
|
typedef const nsStyleStruct*
|
|
(nsRuleNode::*ComputeStyleDataFn)(nsStyleStruct* aStartStruct,
|
|
const nsCSSStruct& aStartData,
|
|
nsIStyleContext* aContext,
|
|
nsRuleNode* aHighestNode,
|
|
const RuleDetail& aRuleDetail,
|
|
PRBool aInherited);
|
|
|
|
static ComputeStyleDataFn gComputeStyleDataFn[];
|
|
|
|
inline RuleDetail CheckSpecifiedProperties(const nsStyleStructID aSID, const nsCSSStruct& aCSSStruct);
|
|
|
|
const nsStyleStruct* GetParentData(const nsStyleStructID aSID);
|
|
const nsStyleStruct* GetDisplayData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetVisibilityData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetFontData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetColorData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetBackgroundData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetMarginData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetBorderData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetPaddingData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetOutlineData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetListData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetPositionData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetTableData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetTableBorderData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetContentData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetQuotesData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetTextData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetTextResetData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetUserInterfaceData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
const nsStyleStruct* GetUIResetData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
#ifdef INCLUDE_XUL
|
|
const nsStyleStruct* GetXULData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
#endif
|
|
#ifdef MOZ_SVG
|
|
const nsStyleStruct* GetSVGData(nsIStyleContext* aContext, PRBool aComputeData);
|
|
#endif
|
|
|
|
typedef const nsStyleStruct* (nsRuleNode::*GetStyleDataFn)(nsIStyleContext*, PRBool);
|
|
static GetStyleDataFn gGetStyleDataFn[];
|
|
|
|
public:
|
|
nsRuleNode(nsIPresContext* aPresContext, nsIStyleRule* aRule=nsnull, nsRuleNode* aParent=nsnull);
|
|
virtual ~nsRuleNode();
|
|
|
|
static void CreateRootNode(nsIPresContext* aPresContext, nsRuleNode** aResult);
|
|
|
|
nsresult GetBits(PRInt32 aType, PRUint32* aResult);
|
|
nsresult Transition(nsIStyleRule* aRule, PRBool aIsInlineStyle, nsRuleNode** aResult);
|
|
nsRuleNode* GetParent() { return mParent; }
|
|
PRBool IsRoot() { return mParent == nsnull; }
|
|
nsresult GetRule(nsIStyleRule** aResult)
|
|
{
|
|
*aResult = mRule;
|
|
NS_IF_ADDREF(*aResult);
|
|
return NS_OK;
|
|
}
|
|
nsIStyleRule* Rule() {
|
|
// NOTE: Does not |AddRef|.
|
|
return mRule;
|
|
}
|
|
nsIPresContext* PresContext() {
|
|
// NOTE: Does not |AddRef|.
|
|
return mPresContext;
|
|
}
|
|
|
|
nsresult ClearCachedData(nsIStyleRule* aRule);
|
|
nsresult ClearCachedDataInSubtree(nsIStyleRule* aRule);
|
|
nsresult GetPresContext(nsIPresContext** aResult);
|
|
nsresult PathContainsRule(nsIStyleRule* aRule, PRBool* aMatched);
|
|
const nsStyleStruct* GetStyleData(nsStyleStructID aSID,
|
|
nsIStyleContext* aContext,
|
|
PRBool aComputeData);
|
|
};
|
|
|
|
#endif
|