56 lines
2.2 KiB
C++
56 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef nsICSSStyleRuleProcessor_h___
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#define nsICSSStyleRuleProcessor_h___
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#include "nslayout.h"
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#include "nsIStyleRuleProcessor.h"
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class nsICSSStyleSheet;
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// IID for the nsICSSStyleRuleProcessor interface {98bf169c-7b7c-11d3-ba05-001083023c2b}
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#define NS_ICSS_STYLE_RULE_PROCESSOR_IID \
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{0x98bf169c, 0x7b7c, 0x11d3, {0xba, 0x05, 0x00, 0x10, 0x83, 0x02, 0x3c, 0x2b}}
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/* The CSS style rule processor provides a mechanism for sibling style sheets
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* to combine their rule processing in order to allow proper cascading to happen.
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*
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* When queried for a rule processor, a CSS style sheet will append itself to
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* the previous CSS processor if present, and return nsnull. Otherwise it will
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* create a new processor for itself.
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*
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* CSS style rule processors keep a live reference on all style sheets bound to them
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* The CSS style sheets keep a weak reference on all the processors that they are
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* bound to (many to many). The CSS style sheet is told when the rule processor is
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* going away (via DropRuleProcessorReference).
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*/
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class nsICSSStyleRuleProcessor: public nsIStyleRuleProcessor {
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public:
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static const nsIID& GetIID() { static nsIID iid = NS_ICSS_STYLE_RULE_PROCESSOR_IID; return iid; }
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NS_IMETHOD AppendStyleSheet(nsICSSStyleSheet* aStyleSheet) = 0;
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NS_IMETHOD ClearRuleCascades(void) = 0;
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};
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#endif /* nsICSSStyleRuleProcessor_h___ */
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