зеркало из https://github.com/mozilla/pjs.git
138 строки
5.2 KiB
C++
138 строки
5.2 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.org 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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*
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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 nsIStyleContext_h___
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#define nsIStyleContext_h___
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#include "nslayout.h"
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#include "nsISupports.h"
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#include "nsColor.h"
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#include "nsCoord.h"
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#include "nsMargin.h"
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#include "nsRect.h"
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#include "nsFont.h"
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#include "nsVoidArray.h"
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#include "nsStyleCoord.h"
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#include "nsStyleStruct.h"
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#include "nsStyleConsts.h"
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#include "nsIStyleSet.h"
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#include "nsIPresContext.h"
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#include "nsCOMPtr.h"
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#include "nsILanguageAtom.h"
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#include "nsIFrame.h"
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class nsISizeOfHandler;
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class nsIFrame;
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class nsISupportsArray;
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class nsIStyleContext;
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class nsIRuleNode;
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//----------------------------------------------------------------------
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#define NS_ISTYLECONTEXT_IID \
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{ 0x26a4d970, 0xa342, 0x11d1, \
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{0x89, 0x74, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81} }
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class nsIStyleContext : public nsISupports {
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public:
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static const nsIID& GetIID() { static nsIID iid = NS_ISTYLECONTEXT_IID; return iid; }
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virtual PRBool Equals(const nsIStyleContext* aOther) const = 0;
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virtual nsIStyleContext* GetParent(void) const = 0;
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NS_IMETHOD GetFirstChild(nsIStyleContext** aContext)=0;
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NS_IMETHOD GetPseudoType(nsIAtom*& aPseudoTag) const = 0;
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NS_IMETHOD FindChildWithRules(const nsIAtom* aPseudoTag,
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nsIRuleNode* aRules,
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nsIStyleContext*& aResult) = 0;
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virtual PRBool HasTextDecorations()=0;
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NS_IMETHOD GetBorderPaddingFor(nsStyleBorderPadding& aBorderPadding)=0;
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// compute the effective difference between two contexts
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NS_IMETHOD CalcStyleDifference(nsIStyleContext* aOther, PRInt32& aHint, PRBool aStopAtFirst = PR_FALSE) = 0;
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NS_IMETHOD GetRuleNode(nsIRuleNode** aResult)=0;
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NS_IMETHOD AddStyleBit(const PRUint32& aBit)=0;
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NS_IMETHOD GetStyleBits(PRUint32* aBits)=0;
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// debugging
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virtual void List(FILE* out, PRInt32 aIndent) = 0;
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virtual void SizeOf(nsISizeOfHandler *aSizeOfHandler, PRUint32 &aSize) = 0;
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#ifdef DEBUG
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virtual void DumpRegressionData(nsIPresContext* aPresContext, FILE* out, PRInt32 aIndent)=0;
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#endif
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// XXXdwh Make this function private. It should not be possible to call this
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// function from layout.
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// Fill a style struct with data.
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NS_IMETHOD SetStyle(nsStyleStructID aSID, const nsStyleStruct& aStruct) = 0;
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// Get the data for a style struct.
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NS_IMETHOD GetStyle(nsStyleStructID aSID, const nsStyleStruct** aStruct) = 0;
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virtual const nsStyleStruct* GetStyleData(nsStyleStructID aSID) = 0;
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// Avoid using this method at all costs. It defeats sharing of style data, forcing the context
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// to have its own unique copy. At the moment the only supported structs are text, background, and
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// display. Don't add support for new structs or use this method without careful consideration! -dwh
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virtual nsStyleStruct* GetUniqueStyleData(nsIPresContext* aPresContext, const nsStyleStructID& aSID) = 0;
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// Used to clear away the style data for a given style context if it matches the specified |aRule|.
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// If |aRule| is null, then the style data is always blown away.
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virtual nsresult ClearStyleData(nsIPresContext* aPresContext, nsIStyleRule* aRule) = 0;
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// call this to prevent context from getting shared
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virtual void ForceUnique(void) = 0;
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};
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// this is private to nsStyleSet, don't call it
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extern NS_LAYOUT nsresult
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NS_NewStyleContext(nsIStyleContext** aInstancePtrResult,
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nsIStyleContext* aParentContext,
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nsIAtom* aPseudoType,
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nsIRuleNode* aRuleNode,
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nsIPresContext* aPresContext);
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#endif /* nsIStyleContext_h___ */
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