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141 lines
4.2 KiB
C++
141 lines
4.2 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: 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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/* base class for all rule types in a CSS style sheet */
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#ifndef mozilla_css_Rule_h___
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#define mozilla_css_Rule_h___
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#include "nsIStyleRule.h"
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#include "nsIDOMCSSRule.h"
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class nsIStyleSheet;
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class nsCSSStyleSheet;
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struct nsRuleData;
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template<class T> struct already_AddRefed;
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namespace mozilla {
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namespace css {
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class GroupRule;
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#define DECL_STYLE_RULE_INHERIT_NO_DOMRULE \
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virtual void MapRuleInfoInto(nsRuleData* aRuleData);
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#define DECL_STYLE_RULE_INHERIT \
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DECL_STYLE_RULE_INHERIT_NO_DOMRULE \
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virtual nsIDOMCSSRule* GetDOMRule();
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class Rule : public nsIStyleRule {
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protected:
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Rule()
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: mSheet(nsnull),
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mParentRule(nsnull)
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{
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}
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Rule(const Rule& aCopy)
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: mSheet(aCopy.mSheet),
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mParentRule(aCopy.mParentRule)
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{
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}
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virtual ~Rule() {}
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public:
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// for implementing nsISupports
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NS_IMETHOD_(nsrefcnt) AddRef();
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NS_IMETHOD_(nsrefcnt) Release();
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protected:
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nsAutoRefCnt mRefCnt;
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NS_DECL_OWNINGTHREAD
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public:
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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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KEYFRAME_RULE,
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KEYFRAMES_RULE,
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DOCUMENT_RULE
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};
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virtual PRInt32 GetType() const = 0;
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nsCSSStyleSheet* GetStyleSheet() const { return mSheet; }
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virtual void SetStyleSheet(nsCSSStyleSheet* aSheet);
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void SetParentRule(GroupRule* aRule) {
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// We don't reference count this up reference. The group rule
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// will tell us when it's going away or when we're detached from
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// it.
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mParentRule = aRule;
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}
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/**
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* Clones |this|. Never returns NULL.
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*/
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virtual already_AddRefed<Rule> 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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virtual nsIDOMCSSRule* GetDOMRule() = 0;
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// to implement methods on nsIDOMCSSRule
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nsresult GetParentRule(nsIDOMCSSRule** aParentRule);
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nsresult GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet);
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protected:
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nsCSSStyleSheet* mSheet;
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GroupRule* mParentRule;
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};
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} // namespace css
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} // namespace mozilla
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#endif /* mozilla_css_Rule_h___ */
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