зеркало из https://github.com/mozilla/pjs.git
140 строки
5.6 KiB
C++
140 строки
5.6 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 Communicator client 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) 1998
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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 DOM objects for element.style and cssStyleRule.style */
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#ifndef nsDOMCSSDeclaration_h___
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#define nsDOMCSSDeclaration_h___
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#include "nsICSSDeclaration.h"
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#include "nsIDOMCSS2Properties.h"
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#include "nsCOMPtr.h"
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class nsCSSParser;
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class nsIURI;
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class nsIPrincipal;
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class nsIDocument;
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namespace mozilla {
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namespace css {
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class Declaration;
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class Loader;
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class Rule;
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}
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}
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class nsDOMCSSDeclaration : public nsICSSDeclaration,
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public nsIDOMCSS2Properties
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{
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public:
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// Only implement QueryInterface; subclasses have the responsibility
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// of implementing AddRef/Release.
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NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
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NS_DECL_NSICSSDECLARATION
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// Require subclasses to implement |GetParentRule|.
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//NS_DECL_NSIDOMCSSSTYLEDECLARATION
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NS_IMETHOD GetCssText(nsAString & aCssText);
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NS_IMETHOD SetCssText(const nsAString & aCssText);
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NS_IMETHOD GetPropertyValue(const nsAString & propertyName,
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nsAString & _retval);
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NS_IMETHOD GetPropertyCSSValue(const nsAString & propertyName,
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nsIDOMCSSValue **_retval);
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NS_IMETHOD RemoveProperty(const nsAString & propertyName,
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nsAString & _retval);
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NS_IMETHOD GetPropertyPriority(const nsAString & propertyName,
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nsAString & _retval);
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NS_IMETHOD SetProperty(const nsAString & propertyName,
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const nsAString & value, const nsAString & priority);
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NS_IMETHOD GetLength(PRUint32 *aLength);
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NS_IMETHOD Item(PRUint32 index, nsAString & _retval);
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NS_IMETHOD GetParentRule(nsIDOMCSSRule * *aParentRule) = 0;
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// We implement this as a shim which forwards to GetPropertyValue
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// and SetPropertyValue; subclasses need not.
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NS_DECL_NSIDOMCSS2PROPERTIES
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protected:
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// This method can return null regardless of the value of aAllocate;
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// however, a null return should only be considered a failure
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// if aAllocate is true.
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virtual mozilla::css::Declaration* GetCSSDeclaration(PRBool aAllocate) = 0;
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virtual nsresult SetCSSDeclaration(mozilla::css::Declaration* aDecl) = 0;
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// Document that we must call BeginUpdate/EndUpdate on around the
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// calls to SetCSSDeclaration and the style rule mutation that leads
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// to it.
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virtual nsIDocument* DocToUpdate() = 0;
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// Information neded to parse a declaration. We need the mSheetURI
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// for error reporting, mBaseURI to resolve relative URIs,
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// mPrincipal for subresource loads, and mCSSLoader for determining
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// whether we're in quirks mode. mBaseURI needs to be a strong
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// pointer because of xml:base possibly creating base URIs on the
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// fly. This is why we don't use CSSParsingEnvironment as a return
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// value, to avoid multiple-refcounting of mBaseURI.
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struct CSSParsingEnvironment {
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nsIURI* mSheetURI;
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nsCOMPtr<nsIURI> mBaseURI;
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nsIPrincipal* mPrincipal;
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mozilla::css::Loader* mCSSLoader;
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};
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// On failure, mPrincipal should be set to null in aCSSParseEnv.
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// If mPrincipal is null, the other members may not be set to
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// anything meaningful.
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virtual void GetCSSParsingEnvironment(CSSParsingEnvironment& aCSSParseEnv) = 0;
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// An implementation for GetCSSParsingEnvironment for callers wrapping
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// an css::Rule.
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static void GetCSSParsingEnvironmentForRule(mozilla::css::Rule* aRule,
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CSSParsingEnvironment& aCSSParseEnv);
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nsresult ParsePropertyValue(const nsCSSProperty aPropID,
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const nsAString& aPropValue,
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PRBool aIsImportant);
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// Prop-id based version of RemoveProperty. Note that this does not
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// return the old value; it just does a straight removal.
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nsresult RemoveProperty(const nsCSSProperty aPropID);
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protected:
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virtual ~nsDOMCSSDeclaration();
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};
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#endif // nsDOMCSSDeclaration_h___
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