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109 lines
3.8 KiB
C++
109 lines
3.8 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: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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) 1999
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* internal interface for all rule types in a CSS style sheet */
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#ifndef nsICSSRule_h
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#define nsICSSRule_h
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#include "nsIStyleRule.h"
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#include "nsIDOMCSSRule.h"
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class nsCSSStyleSheet;
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class nsICSSGroupRule;
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class nsAString;
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template<class T> struct already_AddRefed;
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// IID for the nsICSSRule interface
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#define NS_ICSS_RULE_IID \
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{ 0x1f560b20, 0xa829, 0x4b99, \
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{ 0x87, 0xbd, 0x8c, 0x87, 0x95, 0x2b, 0x3b, 0xb6 } }
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// inheriting from nsIStyleRule is only for style rules, not other rule types
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class nsICSSRule : public nsIStyleRule {
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICSS_RULE_IID)
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// The constants in this list must maintain the following invariants:
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// If a rule of type N must appear before a rule of type M in stylesheets
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// then N < M
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// Note that nsCSSStyleSheet::RebuildChildList assumes that no other kinds of
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// rules can come between two rules of type IMPORT_RULE.
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enum {
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UNKNOWN_RULE = 0,
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CHARSET_RULE,
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IMPORT_RULE,
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NAMESPACE_RULE,
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STYLE_RULE,
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MEDIA_RULE,
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FONT_FACE_RULE,
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PAGE_RULE,
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DOCUMENT_RULE
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};
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virtual PRInt32 GetType() const = 0;
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virtual already_AddRefed<nsIStyleSheet> GetStyleSheet() const = 0;
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virtual void SetStyleSheet(nsCSSStyleSheet* aSheet) = 0;
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virtual void SetParentRule(nsICSSGroupRule* aRule) = 0;
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/**
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* Clones |this|. Never returns NULL.
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*/
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virtual already_AddRefed<nsICSSRule> Clone() const = 0;
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// Note that this returns null for inline style rules since they aren't
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// supposed to have a DOM rule representation (and our code wouldn't work).
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nsresult GetDOMRule(nsIDOMCSSRule** aDOMRule)
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{
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nsresult rv;
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NS_IF_ADDREF(*aDOMRule = GetDOMRuleWeak(&rv));
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return rv;
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}
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virtual nsIDOMCSSRule* GetDOMRuleWeak(nsresult* aResult) = 0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsICSSRule, NS_ICSS_RULE_IID)
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/* Define global NS_New* functions for rules that don't need their own
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interfaces here */
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nsresult
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NS_NewCSSCharsetRule(nsICSSRule** aInstancePtrResult,
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const nsAString& aEncoding);
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#endif /* nsICSSRule_h */
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