mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-06 17:16:12 +00:00
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 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla 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/MPL/
|
|
*
|
|
* 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 the Initial Developer are Copyright (C) 1999
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/* base class for all rule types in a CSS style sheet */
|
|
|
|
#ifndef mozilla_css_Rule_h___
|
|
#define mozilla_css_Rule_h___
|
|
|
|
#include "nsIStyleRule.h"
|
|
#include "nsIDOMCSSRule.h"
|
|
|
|
class nsIStyleSheet;
|
|
class nsCSSStyleSheet;
|
|
struct nsRuleData;
|
|
template<class T> struct already_AddRefed;
|
|
|
|
namespace mozilla {
|
|
namespace css {
|
|
class GroupRule;
|
|
|
|
#define DECL_STYLE_RULE_INHERIT_NO_DOMRULE \
|
|
virtual void MapRuleInfoInto(nsRuleData* aRuleData);
|
|
|
|
#define DECL_STYLE_RULE_INHERIT \
|
|
DECL_STYLE_RULE_INHERIT_NO_DOMRULE \
|
|
virtual nsIDOMCSSRule* GetDOMRule();
|
|
|
|
class Rule : public nsIStyleRule {
|
|
protected:
|
|
Rule()
|
|
: mSheet(nsnull),
|
|
mParentRule(nsnull)
|
|
{
|
|
}
|
|
|
|
Rule(const Rule& aCopy)
|
|
: mSheet(aCopy.mSheet),
|
|
mParentRule(aCopy.mParentRule)
|
|
{
|
|
}
|
|
|
|
virtual ~Rule() {}
|
|
|
|
public:
|
|
// for implementing nsISupports
|
|
NS_IMETHOD_(nsrefcnt) AddRef();
|
|
NS_IMETHOD_(nsrefcnt) Release();
|
|
protected:
|
|
nsAutoRefCnt mRefCnt;
|
|
NS_DECL_OWNINGTHREAD
|
|
public:
|
|
|
|
// The constants in this list must maintain the following invariants:
|
|
// If a rule of type N must appear before a rule of type M in stylesheets
|
|
// then N < M
|
|
// Note that nsCSSStyleSheet::RebuildChildList assumes that no other kinds of
|
|
// rules can come between two rules of type IMPORT_RULE.
|
|
enum {
|
|
UNKNOWN_RULE = 0,
|
|
CHARSET_RULE,
|
|
IMPORT_RULE,
|
|
NAMESPACE_RULE,
|
|
STYLE_RULE,
|
|
MEDIA_RULE,
|
|
FONT_FACE_RULE,
|
|
PAGE_RULE,
|
|
KEYFRAME_RULE,
|
|
KEYFRAMES_RULE,
|
|
DOCUMENT_RULE
|
|
};
|
|
|
|
virtual PRInt32 GetType() const = 0;
|
|
|
|
nsCSSStyleSheet* GetStyleSheet() const { return mSheet; }
|
|
|
|
virtual void SetStyleSheet(nsCSSStyleSheet* aSheet);
|
|
|
|
void SetParentRule(GroupRule* aRule) {
|
|
// We don't reference count this up reference. The group rule
|
|
// will tell us when it's going away or when we're detached from
|
|
// it.
|
|
mParentRule = aRule;
|
|
}
|
|
|
|
/**
|
|
* Clones |this|. Never returns NULL.
|
|
*/
|
|
virtual already_AddRefed<Rule> Clone() const = 0;
|
|
|
|
// Note that this returns null for inline style rules since they aren't
|
|
// supposed to have a DOM rule representation (and our code wouldn't work).
|
|
virtual nsIDOMCSSRule* GetDOMRule() = 0;
|
|
|
|
// to implement methods on nsIDOMCSSRule
|
|
nsresult GetParentRule(nsIDOMCSSRule** aParentRule);
|
|
nsresult GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet);
|
|
|
|
protected:
|
|
nsCSSStyleSheet* mSheet;
|
|
GroupRule* mParentRule;
|
|
};
|
|
|
|
} // namespace css
|
|
} // namespace mozilla
|
|
|
|
#endif /* mozilla_css_Rule_h___ */
|