gecko-dev/layout/style/nsIStyleRuleProcessor.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsIStyleRuleProcessor_h___
#define nsIStyleRuleProcessor_h___
#include <stdio.h>
#include "nslayout.h"
#include "nsISupports.h"
class nsISizeOfHandler;
class nsIStyleSheet;
class nsIStyleContext;
class nsIPresContext;
class nsIContent;
class nsISupportsArray;
class nsIAtom;
// IID for the nsIStyleRuleProcessor interface {015575fe-7b6c-11d3-ba05-001083023c2b}
#define NS_ISTYLE_RULE_PROCESSOR_IID \
{0x015575fe, 0x7b6c, 0x11d3, {0xba, 0x05, 0x00, 0x10, 0x83, 0x02, 0x3c, 0x2b}}
/* The style rule processor interface is a mechanism to seperate the matching
* of style rules from style sheet instances.
* Simple style sheets can and will act as their own processor.
* Sheets where rule ordering interlaces between multiple sheets, will need to
* share a single rule processor between them (CSS sheets do this for cascading order)
*/
class nsIStyleRuleProcessor : public nsISupports {
public:
static const nsIID& GetIID() { static nsIID iid = NS_ISTYLE_RULE_PROCESSOR_IID; return iid; }
// populate supports array with nsIStyleRule*
// rules are ordered, those with higher precedence come last
NS_IMETHOD RulesMatching(nsIPresContext* aPresContext,
nsIAtom* aMedium,
nsIContent* aContent,
nsIStyleContext* aParentContext,
nsISupportsArray* aResults) = 0;
NS_IMETHOD RulesMatching(nsIPresContext* aPresContext,
nsIAtom* aMedium,
nsIContent* aParentContent,
nsIAtom* aPseudoTag,
nsIStyleContext* aParentContext,
nsISupportsArray* aResults) = 0;
// Test if style is dependent on content state
NS_IMETHOD HasStateDependentStyle(nsIPresContext* aPresContext,
nsIAtom* aMedium,
nsIContent* aContent) = 0;
virtual void SizeOf(nsISizeOfHandler *aSizeofHandler, PRUint32 &aSize) = 0;
};
#endif /* nsIStyleRuleProcessor_h___ */