зеркало из https://github.com/mozilla/pjs.git
1932 строки
49 KiB
C++
1932 строки
49 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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// vim:cindent:tabstop=2:expandtab:shiftwidth=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) 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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* L. David Baron <dbaron@dbaron.org>
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* Pierre Phaneuf <pp@ludusdesign.com>
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* Daniel Glazman <glazman@netscape.com>
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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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/* representation of a CSS style sheet */
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#include "nsCSSStyleSheet.h"
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#include "nsCRT.h"
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#include "nsIAtom.h"
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#include "nsIServiceManager.h"
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#include "nsCSSRuleProcessor.h"
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#include "nsICSSStyleRule.h"
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#include "nsICSSNameSpaceRule.h"
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#include "nsICSSGroupRule.h"
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#include "nsICSSImportRule.h"
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#include "nsIMediaList.h"
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#include "nsIDocument.h"
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#include "nsPresContext.h"
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#include "nsGkAtoms.h"
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#include "nsString.h"
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#include "nsVoidArray.h"
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#include "nsIDOMStyleSheetList.h"
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#include "nsIDOMCSSStyleSheet.h"
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#include "nsIDOMCSSRule.h"
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#include "nsIDOMCSSImportRule.h"
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#include "nsIDOMCSSRuleList.h"
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#include "nsIDOMMediaList.h"
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#include "nsIDOMNode.h"
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#include "nsDOMError.h"
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#include "nsICSSParser.h"
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#include "nsICSSLoader.h"
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#include "nsICSSLoaderObserver.h"
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#include "nsINameSpaceManager.h"
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#include "nsXMLNameSpaceMap.h"
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#include "nsCOMPtr.h"
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#include "nsContentUtils.h"
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#include "nsIJSContextStack.h"
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#include "nsIScriptSecurityManager.h"
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#include "mozAutoDocUpdate.h"
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// -------------------------------
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// Style Rule List for the DOM
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//
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class CSSRuleListImpl : public nsIDOMCSSRuleList
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{
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public:
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CSSRuleListImpl(nsCSSStyleSheet *aStyleSheet);
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NS_DECL_ISUPPORTS
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// nsIDOMCSSRuleList interface
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NS_IMETHOD GetLength(PRUint32* aLength);
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NS_IMETHOD Item(PRUint32 aIndex, nsIDOMCSSRule** aReturn);
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void DropReference() { mStyleSheet = nsnull; }
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protected:
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virtual ~CSSRuleListImpl();
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nsCSSStyleSheet* mStyleSheet;
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public:
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PRBool mRulesAccessed;
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};
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CSSRuleListImpl::CSSRuleListImpl(nsCSSStyleSheet *aStyleSheet)
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{
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// Not reference counted to avoid circular references.
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// The style sheet will tell us when its going away.
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mStyleSheet = aStyleSheet;
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mRulesAccessed = PR_FALSE;
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}
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CSSRuleListImpl::~CSSRuleListImpl()
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{
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}
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// QueryInterface implementation for CSSRuleList
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NS_INTERFACE_MAP_BEGIN(CSSRuleListImpl)
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NS_INTERFACE_MAP_ENTRY(nsIDOMCSSRuleList)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSRuleList)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(CSSRuleListImpl)
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NS_IMPL_RELEASE(CSSRuleListImpl)
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NS_IMETHODIMP
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CSSRuleListImpl::GetLength(PRUint32* aLength)
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{
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if (nsnull != mStyleSheet) {
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PRInt32 count;
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mStyleSheet->StyleRuleCount(count);
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*aLength = (PRUint32)count;
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}
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else {
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*aLength = 0;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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CSSRuleListImpl::Item(PRUint32 aIndex, nsIDOMCSSRule** aReturn)
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{
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nsresult result = NS_OK;
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*aReturn = nsnull;
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if (mStyleSheet) {
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result = mStyleSheet->EnsureUniqueInner(); // needed to ensure rules have correct parent
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if (NS_SUCCEEDED(result)) {
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nsCOMPtr<nsICSSRule> rule;
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result = mStyleSheet->GetStyleRuleAt(aIndex, *getter_AddRefs(rule));
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if (rule) {
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result = rule->GetDOMRule(aReturn);
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mRulesAccessed = PR_TRUE; // signal to never share rules again
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} else if (result == NS_ERROR_ILLEGAL_VALUE) {
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result = NS_OK; // per spec: "Return Value ... null if ... not a valid index."
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}
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}
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}
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return result;
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}
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NS_INTERFACE_MAP_BEGIN(nsMediaList)
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NS_INTERFACE_MAP_ENTRY(nsIDOMMediaList)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(MediaList)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(nsMediaList)
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NS_IMPL_RELEASE(nsMediaList)
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nsMediaList::nsMediaList()
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: mStyleSheet(nsnull)
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{
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}
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nsMediaList::~nsMediaList()
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{
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}
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nsresult
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nsMediaList::GetText(nsAString& aMediaText)
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{
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aMediaText.Truncate();
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for (PRInt32 i = 0, i_end = mArray.Count(); i < i_end; ++i) {
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nsIAtom* medium = mArray[i];
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NS_ENSURE_TRUE(medium, NS_ERROR_FAILURE);
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nsAutoString buffer;
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medium->ToString(buffer);
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aMediaText.Append(buffer);
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if (i + 1 < i_end) {
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aMediaText.AppendLiteral(", ");
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}
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}
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return NS_OK;
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}
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// XXXbz this is so ill-defined in the spec, it's not clear quite what
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// it should be doing....
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nsresult
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nsMediaList::SetText(const nsAString& aMediaText)
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{
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nsCOMPtr<nsICSSParser> parser;
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nsresult rv = NS_NewCSSParser(getter_AddRefs(parser));
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NS_ENSURE_SUCCESS(rv, rv);
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PRBool htmlMode = PR_FALSE;
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nsCOMPtr<nsIDOMStyleSheet> domSheet =
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do_QueryInterface(static_cast<nsICSSStyleSheet*>(mStyleSheet));
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if (domSheet) {
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nsCOMPtr<nsIDOMNode> node;
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domSheet->GetOwnerNode(getter_AddRefs(node));
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htmlMode = !!node;
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}
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return parser->ParseMediaList(nsString(aMediaText), nsnull, 0,
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this, htmlMode);
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}
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/*
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* aMatch is true when we contain the desired medium or contain the
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* "all" medium or contain no media at all, which is the same as
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* containing "all"
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*/
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PRBool
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nsMediaList::Matches(nsPresContext* aPresContext)
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{
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if (-1 != mArray.IndexOf(aPresContext->Medium()) ||
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-1 != mArray.IndexOf(nsGkAtoms::all))
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return PR_TRUE;
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return mArray.Count() == 0;
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}
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nsresult
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nsMediaList::SetStyleSheet(nsICSSStyleSheet *aSheet)
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{
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NS_ASSERTION(aSheet == mStyleSheet || !aSheet || !mStyleSheet,
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"multiple style sheets competing for one media list");
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mStyleSheet = static_cast<nsCSSStyleSheet*>(aSheet);
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return NS_OK;
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}
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nsresult
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nsMediaList::Clone(nsMediaList** aResult)
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{
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nsRefPtr<nsMediaList> result = new nsMediaList();
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if (!result)
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return NS_ERROR_OUT_OF_MEMORY;
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if (!result->mArray.AppendObjects(mArray))
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(*aResult = result);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMediaList::GetMediaText(nsAString& aMediaText)
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{
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return GetText(aMediaText);
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}
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// "sheet" should be an nsCSSStyleSheet and "doc" should be an
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// nsCOMPtr<nsIDocument>
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#define BEGIN_MEDIA_CHANGE(sheet, doc) \
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if (sheet) { \
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rv = sheet->GetOwningDocument(*getter_AddRefs(doc)); \
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NS_ENSURE_SUCCESS(rv, rv); \
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} \
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mozAutoDocUpdate updateBatch(doc, UPDATE_STYLE, PR_TRUE); \
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if (sheet) { \
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rv = sheet->WillDirty(); \
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NS_ENSURE_SUCCESS(rv, rv); \
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}
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#define END_MEDIA_CHANGE(sheet, doc) \
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if (sheet) { \
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sheet->DidDirty(); \
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} \
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/* XXXldb Pass something meaningful? */ \
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if (doc) { \
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doc->StyleRuleChanged(sheet, nsnull, nsnull); \
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}
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NS_IMETHODIMP
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nsMediaList::SetMediaText(const nsAString& aMediaText)
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{
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nsresult rv = NS_OK;
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nsCOMPtr<nsIDocument> doc;
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BEGIN_MEDIA_CHANGE(mStyleSheet, doc)
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rv = SetText(aMediaText);
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if (NS_FAILED(rv))
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return rv;
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END_MEDIA_CHANGE(mStyleSheet, doc)
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return rv;
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}
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NS_IMETHODIMP
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nsMediaList::GetLength(PRUint32* aLength)
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{
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NS_ENSURE_ARG_POINTER(aLength);
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*aLength = mArray.Count();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMediaList::Item(PRUint32 aIndex, nsAString& aReturn)
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{
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PRInt32 index = aIndex;
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if (0 <= index && index < Count()) {
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MediumAt(aIndex)->ToString(aReturn);
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} else {
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SetDOMStringToNull(aReturn);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMediaList::DeleteMedium(const nsAString& aOldMedium)
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{
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nsresult rv = NS_OK;
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nsCOMPtr<nsIDocument> doc;
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BEGIN_MEDIA_CHANGE(mStyleSheet, doc)
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rv = Delete(aOldMedium);
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if (NS_FAILED(rv))
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return rv;
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END_MEDIA_CHANGE(mStyleSheet, doc)
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return rv;
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}
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NS_IMETHODIMP
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nsMediaList::AppendMedium(const nsAString& aNewMedium)
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{
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nsresult rv = NS_OK;
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nsCOMPtr<nsIDocument> doc;
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BEGIN_MEDIA_CHANGE(mStyleSheet, doc)
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rv = Append(aNewMedium);
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if (NS_FAILED(rv))
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return rv;
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END_MEDIA_CHANGE(mStyleSheet, doc)
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return rv;
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}
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nsresult
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nsMediaList::Delete(const nsAString& aOldMedium)
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{
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if (aOldMedium.IsEmpty())
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return NS_ERROR_DOM_NOT_FOUND_ERR;
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nsCOMPtr<nsIAtom> old = do_GetAtom(aOldMedium);
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NS_ENSURE_TRUE(old, NS_ERROR_OUT_OF_MEMORY);
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PRInt32 indx = mArray.IndexOf(old);
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if (indx < 0) {
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return NS_ERROR_DOM_NOT_FOUND_ERR;
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}
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mArray.RemoveObjectAt(indx);
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return NS_OK;
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}
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nsresult
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nsMediaList::Append(const nsAString& aNewMedium)
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{
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if (aNewMedium.IsEmpty())
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return NS_ERROR_DOM_NOT_FOUND_ERR;
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nsCOMPtr<nsIAtom> media = do_GetAtom(aNewMedium);
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NS_ENSURE_TRUE(media, NS_ERROR_OUT_OF_MEMORY);
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PRInt32 indx = mArray.IndexOf(media);
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if (indx >= 0) {
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mArray.RemoveObjectAt(indx);
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}
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mArray.AppendObject(media);
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return NS_OK;
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}
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// -------------------------------
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// Imports Collection for the DOM
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//
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class CSSImportsCollectionImpl : public nsIDOMStyleSheetList
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{
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public:
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CSSImportsCollectionImpl(nsICSSStyleSheet *aStyleSheet);
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NS_DECL_ISUPPORTS
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// nsIDOMCSSStyleSheetList interface
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NS_IMETHOD GetLength(PRUint32* aLength);
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NS_IMETHOD Item(PRUint32 aIndex, nsIDOMStyleSheet** aReturn);
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void DropReference() { mStyleSheet = nsnull; }
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protected:
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virtual ~CSSImportsCollectionImpl();
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nsICSSStyleSheet* mStyleSheet;
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};
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CSSImportsCollectionImpl::CSSImportsCollectionImpl(nsICSSStyleSheet *aStyleSheet)
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{
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// Not reference counted to avoid circular references.
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// The style sheet will tell us when its going away.
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mStyleSheet = aStyleSheet;
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}
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CSSImportsCollectionImpl::~CSSImportsCollectionImpl()
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{
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}
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// QueryInterface implementation for CSSImportsCollectionImpl
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NS_INTERFACE_MAP_BEGIN(CSSImportsCollectionImpl)
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NS_INTERFACE_MAP_ENTRY(nsIDOMStyleSheetList)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(StyleSheetList)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(CSSImportsCollectionImpl)
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NS_IMPL_RELEASE(CSSImportsCollectionImpl)
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NS_IMETHODIMP
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CSSImportsCollectionImpl::GetLength(PRUint32* aLength)
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{
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if (nsnull != mStyleSheet) {
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PRInt32 count;
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mStyleSheet->StyleSheetCount(count);
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*aLength = (PRUint32)count;
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}
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else {
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*aLength = 0;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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CSSImportsCollectionImpl::Item(PRUint32 aIndex, nsIDOMStyleSheet** aReturn)
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{
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nsresult result = NS_OK;
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*aReturn = nsnull;
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if (mStyleSheet) {
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nsCOMPtr<nsICSSStyleSheet> sheet;
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result = mStyleSheet->GetStyleSheetAt(aIndex, *getter_AddRefs(sheet));
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if (NS_SUCCEEDED(result)) {
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result = CallQueryInterface(sheet, aReturn);
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}
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}
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return result;
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}
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// -------------------------------
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// CSS Style Sheet Inner Data Container
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//
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static PRBool SetStyleSheetReference(nsICSSRule* aRule, void* aSheet)
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{
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if (aRule) {
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aRule->SetStyleSheet((nsICSSStyleSheet*)aSheet);
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}
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return PR_TRUE;
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}
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nsCSSStyleSheetInner::nsCSSStyleSheetInner(nsICSSStyleSheet* aParentSheet)
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: mSheets(),
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mComplete(PR_FALSE)
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#ifdef DEBUG
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, mPrincipalSet(PR_FALSE)
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#endif
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{
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MOZ_COUNT_CTOR(nsCSSStyleSheetInner);
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mSheets.AppendElement(aParentSheet);
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mPrincipal = do_CreateInstance("@mozilla.org/nullprincipal;1");
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}
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static PRBool
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CloneRuleInto(nsICSSRule* aRule, void* aArray)
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{
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nsICSSRule* clone = nsnull;
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aRule->Clone(clone);
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if (clone) {
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static_cast<nsCOMArray<nsICSSRule>*>(aArray)->AppendObject(clone);
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NS_RELEASE(clone);
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}
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return PR_TRUE;
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}
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nsCSSStyleSheetInner::nsCSSStyleSheetInner(nsCSSStyleSheetInner& aCopy,
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nsICSSStyleSheet* aParentSheet)
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: mSheets(),
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mSheetURI(aCopy.mSheetURI),
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mOriginalSheetURI(aCopy.mOriginalSheetURI),
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mBaseURI(aCopy.mBaseURI),
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mPrincipal(aCopy.mPrincipal),
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mComplete(aCopy.mComplete)
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#ifdef DEBUG
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, mPrincipalSet(aCopy.mPrincipalSet)
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#endif
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{
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MOZ_COUNT_CTOR(nsCSSStyleSheetInner);
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mSheets.AppendElement(aParentSheet);
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aCopy.mOrderedRules.EnumerateForwards(CloneRuleInto, &mOrderedRules);
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mOrderedRules.EnumerateForwards(SetStyleSheetReference, aParentSheet);
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RebuildNameSpaces();
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}
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nsCSSStyleSheetInner::~nsCSSStyleSheetInner()
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{
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MOZ_COUNT_DTOR(nsCSSStyleSheetInner);
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mOrderedRules.EnumerateForwards(SetStyleSheetReference, nsnull);
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}
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|
|
|
nsCSSStyleSheetInner*
|
|
nsCSSStyleSheetInner::CloneFor(nsICSSStyleSheet* aParentSheet)
|
|
{
|
|
return new nsCSSStyleSheetInner(*this, aParentSheet);
|
|
}
|
|
|
|
void
|
|
nsCSSStyleSheetInner::AddSheet(nsICSSStyleSheet* aParentSheet)
|
|
{
|
|
mSheets.AppendElement(aParentSheet);
|
|
}
|
|
|
|
void
|
|
nsCSSStyleSheetInner::RemoveSheet(nsICSSStyleSheet* aParentSheet)
|
|
{
|
|
if (1 == mSheets.Count()) {
|
|
NS_ASSERTION(aParentSheet == (nsICSSStyleSheet*)mSheets.ElementAt(0), "bad parent");
|
|
delete this;
|
|
return;
|
|
}
|
|
if (aParentSheet == (nsICSSStyleSheet*)mSheets.ElementAt(0)) {
|
|
mSheets.RemoveElementAt(0);
|
|
NS_ASSERTION(mSheets.Count(), "no parents");
|
|
mOrderedRules.EnumerateForwards(SetStyleSheetReference,
|
|
(nsICSSStyleSheet*)mSheets.ElementAt(0));
|
|
}
|
|
else {
|
|
mSheets.RemoveElement(aParentSheet);
|
|
}
|
|
}
|
|
|
|
static PRBool
|
|
CreateNameSpace(nsICSSRule* aRule, void* aNameSpacePtr)
|
|
{
|
|
PRInt32 type = nsICSSRule::UNKNOWN_RULE;
|
|
aRule->GetType(type);
|
|
if (nsICSSRule::NAMESPACE_RULE == type) {
|
|
nsICSSNameSpaceRule* nameSpaceRule = (nsICSSNameSpaceRule*)aRule;
|
|
nsXMLNameSpaceMap *nameSpaceMap =
|
|
static_cast<nsXMLNameSpaceMap*>(aNameSpacePtr);
|
|
|
|
nsIAtom* prefix = nsnull;
|
|
nsAutoString urlSpec;
|
|
nameSpaceRule->GetPrefix(prefix);
|
|
nameSpaceRule->GetURLSpec(urlSpec);
|
|
|
|
nameSpaceMap->AddPrefix(prefix, urlSpec);
|
|
return PR_TRUE;
|
|
}
|
|
// stop if not namespace, import or charset because namespace can't follow anything else
|
|
return (((nsICSSRule::CHARSET_RULE == type) ||
|
|
(nsICSSRule::IMPORT_RULE)) ? PR_TRUE : PR_FALSE);
|
|
}
|
|
|
|
void
|
|
nsCSSStyleSheetInner::RebuildNameSpaces()
|
|
{
|
|
if (mNameSpaceMap) {
|
|
mNameSpaceMap->Clear();
|
|
} else {
|
|
mNameSpaceMap = nsXMLNameSpaceMap::Create();
|
|
if (!mNameSpaceMap) {
|
|
return; // out of memory
|
|
}
|
|
}
|
|
|
|
mOrderedRules.EnumerateForwards(CreateNameSpace, mNameSpaceMap);
|
|
}
|
|
|
|
|
|
// -------------------------------
|
|
// CSS Style Sheet
|
|
//
|
|
|
|
nsCSSStyleSheet::nsCSSStyleSheet()
|
|
: nsICSSStyleSheet(),
|
|
mRefCnt(0),
|
|
mTitle(),
|
|
mMedia(nsnull),
|
|
mFirstChild(nsnull),
|
|
mNext(nsnull),
|
|
mParent(nsnull),
|
|
mOwnerRule(nsnull),
|
|
mImportsCollection(nsnull),
|
|
mRuleCollection(nsnull),
|
|
mDocument(nsnull),
|
|
mOwningNode(nsnull),
|
|
mDisabled(PR_FALSE),
|
|
mDirty(PR_FALSE),
|
|
mRuleProcessors(nsnull)
|
|
{
|
|
|
|
mInner = new nsCSSStyleSheetInner(this);
|
|
}
|
|
|
|
nsCSSStyleSheet::nsCSSStyleSheet(const nsCSSStyleSheet& aCopy,
|
|
nsICSSStyleSheet* aParentToUse,
|
|
nsICSSImportRule* aOwnerRuleToUse,
|
|
nsIDocument* aDocumentToUse,
|
|
nsIDOMNode* aOwningNodeToUse)
|
|
: nsICSSStyleSheet(),
|
|
mRefCnt(0),
|
|
mTitle(aCopy.mTitle),
|
|
mMedia(nsnull),
|
|
mFirstChild(nsnull),
|
|
mNext(nsnull),
|
|
mParent(aParentToUse),
|
|
mOwnerRule(aOwnerRuleToUse),
|
|
mImportsCollection(nsnull), // re-created lazily
|
|
mRuleCollection(nsnull), // re-created lazily
|
|
mDocument(aDocumentToUse),
|
|
mOwningNode(aOwningNodeToUse),
|
|
mDisabled(aCopy.mDisabled),
|
|
mDirty(PR_FALSE),
|
|
mInner(aCopy.mInner),
|
|
mRuleProcessors(nsnull)
|
|
{
|
|
|
|
mInner->AddSheet(this);
|
|
|
|
if (aCopy.mRuleCollection &&
|
|
aCopy.mRuleCollection->mRulesAccessed) { // CSSOM's been there, force full copy now
|
|
NS_ASSERTION(mInner->mComplete, "Why have rules been accessed on an incomplete sheet?");
|
|
EnsureUniqueInner();
|
|
}
|
|
|
|
if (aCopy.mMedia) {
|
|
aCopy.mMedia->Clone(getter_AddRefs(mMedia));
|
|
}
|
|
|
|
if (aCopy.mFirstChild) {
|
|
nsCSSStyleSheet* otherChild = aCopy.mFirstChild;
|
|
nsCSSStyleSheet** ourSlot = &mFirstChild;
|
|
do {
|
|
// XXX This is wrong; we should be keeping @import rules and
|
|
// sheets in sync!
|
|
nsCSSStyleSheet* child = new nsCSSStyleSheet(*otherChild,
|
|
this,
|
|
nsnull,
|
|
aDocumentToUse,
|
|
nsnull);
|
|
if (child) {
|
|
NS_ADDREF(child);
|
|
(*ourSlot) = child;
|
|
ourSlot = &(child->mNext);
|
|
}
|
|
otherChild = otherChild->mNext;
|
|
}
|
|
while (otherChild && ourSlot);
|
|
}
|
|
}
|
|
|
|
nsCSSStyleSheet::~nsCSSStyleSheet()
|
|
{
|
|
if (mFirstChild) {
|
|
nsCSSStyleSheet* child = mFirstChild;
|
|
do {
|
|
child->mParent = nsnull;
|
|
child->mDocument = nsnull;
|
|
child = child->mNext;
|
|
} while (child);
|
|
NS_RELEASE(mFirstChild);
|
|
}
|
|
NS_IF_RELEASE(mNext);
|
|
if (nsnull != mRuleCollection) {
|
|
mRuleCollection->DropReference();
|
|
NS_RELEASE(mRuleCollection);
|
|
}
|
|
if (nsnull != mImportsCollection) {
|
|
mImportsCollection->DropReference();
|
|
NS_RELEASE(mImportsCollection);
|
|
}
|
|
if (mMedia) {
|
|
mMedia->SetStyleSheet(nsnull);
|
|
mMedia = nsnull;
|
|
}
|
|
mInner->RemoveSheet(this);
|
|
// XXX The document reference is not reference counted and should
|
|
// not be released. The document will let us know when it is going
|
|
// away.
|
|
if (mRuleProcessors) {
|
|
NS_ASSERTION(mRuleProcessors->Count() == 0, "destructing sheet with rule processor reference");
|
|
delete mRuleProcessors; // weak refs, should be empty here anyway
|
|
}
|
|
}
|
|
|
|
|
|
// QueryInterface implementation for nsCSSStyleSheet
|
|
NS_INTERFACE_MAP_BEGIN(nsCSSStyleSheet)
|
|
NS_INTERFACE_MAP_ENTRY(nsICSSStyleSheet)
|
|
NS_INTERFACE_MAP_ENTRY(nsIStyleSheet)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMStyleSheet)
|
|
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSStyleSheet)
|
|
NS_INTERFACE_MAP_ENTRY(nsICSSLoaderObserver)
|
|
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsICSSStyleSheet)
|
|
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSStyleSheet)
|
|
NS_INTERFACE_MAP_END
|
|
|
|
|
|
NS_IMPL_ADDREF(nsCSSStyleSheet)
|
|
NS_IMPL_RELEASE(nsCSSStyleSheet)
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::AddRuleProcessor(nsCSSRuleProcessor* aProcessor)
|
|
{
|
|
if (! mRuleProcessors) {
|
|
mRuleProcessors = new nsAutoVoidArray();
|
|
if (!mRuleProcessors)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
NS_ASSERTION(-1 == mRuleProcessors->IndexOf(aProcessor),
|
|
"processor already registered");
|
|
mRuleProcessors->AppendElement(aProcessor); // weak ref
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::DropRuleProcessor(nsCSSRuleProcessor* aProcessor)
|
|
{
|
|
if (!mRuleProcessors)
|
|
return NS_ERROR_FAILURE;
|
|
return mRuleProcessors->RemoveElement(aProcessor)
|
|
? NS_OK
|
|
: NS_ERROR_FAILURE;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetURIs(nsIURI* aSheetURI, nsIURI* aOriginalSheetURI,
|
|
nsIURI* aBaseURI)
|
|
{
|
|
NS_PRECONDITION(aSheetURI && aBaseURI, "null ptr");
|
|
|
|
NS_ASSERTION(mInner->mOrderedRules.Count() == 0 && !mInner->mComplete,
|
|
"Can't call SetURL on sheets that are complete or have rules");
|
|
|
|
mInner->mSheetURI = aSheetURI;
|
|
mInner->mOriginalSheetURI = aOriginalSheetURI;
|
|
mInner->mBaseURI = aBaseURI;
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsCSSStyleSheet::SetPrincipal(nsIPrincipal* aPrincipal)
|
|
{
|
|
NS_PRECONDITION(!mInner->mPrincipalSet,
|
|
"Should have an inner whose principal has not yet been set");
|
|
if (aPrincipal) {
|
|
mInner->mPrincipal = aPrincipal;
|
|
#ifdef DEBUG
|
|
mInner->mPrincipalSet = PR_TRUE;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
nsIPrincipal*
|
|
nsCSSStyleSheet::Principal() const
|
|
{
|
|
return mInner->mPrincipal;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetSheetURI(nsIURI** aSheetURI) const
|
|
{
|
|
NS_IF_ADDREF(*aSheetURI = mInner->mSheetURI.get());
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetBaseURI(nsIURI** aBaseURI) const
|
|
{
|
|
NS_IF_ADDREF(*aBaseURI = mInner->mBaseURI.get());
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetTitle(const nsAString& aTitle)
|
|
{
|
|
mTitle = aTitle;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetType(nsString& aType) const
|
|
{
|
|
aType.AssignLiteral("text/css");
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsCSSStyleSheet::UseForMedium(nsPresContext* aPresContext) const
|
|
{
|
|
if (mMedia) {
|
|
return mMedia->Matches(aPresContext);
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetMedia(nsMediaList* aMedia)
|
|
{
|
|
mMedia = aMedia;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP_(PRBool)
|
|
nsCSSStyleSheet::HasRules() const
|
|
{
|
|
PRInt32 count;
|
|
StyleRuleCount(count);
|
|
return count != 0;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetApplicable(PRBool& aApplicable) const
|
|
{
|
|
aApplicable = !mDisabled && mInner->mComplete;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetEnabled(PRBool aEnabled)
|
|
{
|
|
// Internal method, so callers must handle BeginUpdate/EndUpdate
|
|
PRBool oldDisabled = mDisabled;
|
|
mDisabled = !aEnabled;
|
|
|
|
if (mDocument && mInner->mComplete && oldDisabled != mDisabled) {
|
|
ClearRuleCascades();
|
|
|
|
mDocument->SetStyleSheetApplicableState(this, !mDisabled);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetComplete(PRBool& aComplete) const
|
|
{
|
|
aComplete = mInner->mComplete;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetComplete()
|
|
{
|
|
NS_ASSERTION(!mDirty, "Can't set a dirty sheet complete!");
|
|
mInner->mComplete = PR_TRUE;
|
|
if (mDocument && !mDisabled) {
|
|
// Let the document know
|
|
mDocument->BeginUpdate(UPDATE_STYLE);
|
|
mDocument->SetStyleSheetApplicableState(this, PR_TRUE);
|
|
mDocument->EndUpdate(UPDATE_STYLE);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetParentSheet(nsIStyleSheet*& aParent) const
|
|
{
|
|
aParent = mParent;
|
|
NS_IF_ADDREF(aParent);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetOwningDocument(nsIDocument*& aDocument) const
|
|
{
|
|
aDocument = mDocument;
|
|
NS_IF_ADDREF(aDocument);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetOwningDocument(nsIDocument* aDocument)
|
|
{ // not ref counted
|
|
mDocument = aDocument;
|
|
// Now set the same document on all our child sheets....
|
|
for (nsCSSStyleSheet* child = mFirstChild; child; child = child->mNext) {
|
|
child->SetOwningDocument(aDocument);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetOwningNode(nsIDOMNode* aOwningNode)
|
|
{ // not ref counted
|
|
mOwningNode = aOwningNode;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetOwnerRule(nsICSSImportRule* aOwnerRule)
|
|
{ // not ref counted
|
|
mOwnerRule = aOwnerRule;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetOwnerRule(nsICSSImportRule** aOwnerRule)
|
|
{
|
|
*aOwnerRule = mOwnerRule;
|
|
NS_IF_ADDREF(*aOwnerRule);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::ContainsStyleSheet(nsIURI* aURL, PRBool& aContains, nsIStyleSheet** aTheChild /*=nsnull*/)
|
|
{
|
|
NS_PRECONDITION(nsnull != aURL, "null arg");
|
|
|
|
if (!mInner->mSheetURI) {
|
|
// We're not yet far enough along in our load to know what our URL is (we
|
|
// may still get redirected and such). Assert (caller should really not be
|
|
// calling this on us at this stage) and return.
|
|
NS_ERROR("ContainsStyleSheet called on a sheet that's still loading");
|
|
aContains = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
// first check ourself out
|
|
nsresult rv = mInner->mSheetURI->Equals(aURL, &aContains);
|
|
if (NS_FAILED(rv)) aContains = PR_FALSE;
|
|
|
|
if (aContains) {
|
|
// if we found it and the out-param is there, set it and addref
|
|
if (aTheChild) {
|
|
rv = QueryInterface( NS_GET_IID(nsIStyleSheet), (void **)aTheChild);
|
|
}
|
|
} else {
|
|
nsCSSStyleSheet* child = mFirstChild;
|
|
// now check the chil'ins out (recursively)
|
|
while ((PR_FALSE == aContains) && (nsnull != child)) {
|
|
child->ContainsStyleSheet(aURL, aContains, aTheChild);
|
|
if (aContains) {
|
|
break;
|
|
} else {
|
|
child = child->mNext;
|
|
}
|
|
}
|
|
}
|
|
|
|
// NOTE: if there are errors in the above we are handling them locally
|
|
// and not promoting them to the caller
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::AppendStyleSheet(nsICSSStyleSheet* aSheet)
|
|
{
|
|
NS_PRECONDITION(nsnull != aSheet, "null arg");
|
|
|
|
if (NS_SUCCEEDED(WillDirty())) {
|
|
NS_ADDREF(aSheet);
|
|
nsCSSStyleSheet* sheet = (nsCSSStyleSheet*)aSheet;
|
|
|
|
if (! mFirstChild) {
|
|
mFirstChild = sheet;
|
|
}
|
|
else {
|
|
nsCSSStyleSheet* child = mFirstChild;
|
|
while (child->mNext) {
|
|
child = child->mNext;
|
|
}
|
|
child->mNext = sheet;
|
|
}
|
|
|
|
// This is not reference counted. Our parent tells us when
|
|
// it's going away.
|
|
sheet->mParent = this;
|
|
sheet->mDocument = mDocument;
|
|
DidDirty();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::InsertStyleSheetAt(nsICSSStyleSheet* aSheet, PRInt32 aIndex)
|
|
{
|
|
NS_PRECONDITION(nsnull != aSheet, "null arg");
|
|
|
|
nsresult result = WillDirty();
|
|
|
|
if (NS_SUCCEEDED(result)) {
|
|
NS_ADDREF(aSheet);
|
|
nsCSSStyleSheet* sheet = (nsCSSStyleSheet*)aSheet;
|
|
nsCSSStyleSheet* child = mFirstChild;
|
|
|
|
if (aIndex && child) {
|
|
while ((0 < --aIndex) && child->mNext) {
|
|
child = child->mNext;
|
|
}
|
|
sheet->mNext = child->mNext;
|
|
child->mNext = sheet;
|
|
}
|
|
else {
|
|
sheet->mNext = mFirstChild;
|
|
mFirstChild = sheet;
|
|
}
|
|
|
|
// This is not reference counted. Our parent tells us when
|
|
// it's going away.
|
|
sheet->mParent = this;
|
|
sheet->mDocument = mDocument;
|
|
DidDirty();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::PrependStyleRule(nsICSSRule* aRule)
|
|
{
|
|
NS_PRECONDITION(nsnull != aRule, "null arg");
|
|
|
|
if (NS_SUCCEEDED(WillDirty())) {
|
|
mInner->mOrderedRules.InsertObjectAt(aRule, 0);
|
|
aRule->SetStyleSheet(this);
|
|
DidDirty();
|
|
|
|
PRInt32 type = nsICSSRule::UNKNOWN_RULE;
|
|
aRule->GetType(type);
|
|
if (nsICSSRule::NAMESPACE_RULE == type) {
|
|
// no api to prepend a namespace (ugh), release old ones and re-create them all
|
|
mInner->RebuildNameSpaces();
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::AppendStyleRule(nsICSSRule* aRule)
|
|
{
|
|
NS_PRECONDITION(nsnull != aRule, "null arg");
|
|
|
|
if (NS_SUCCEEDED(WillDirty())) {
|
|
mInner->mOrderedRules.AppendObject(aRule);
|
|
aRule->SetStyleSheet(this);
|
|
DidDirty();
|
|
|
|
PRInt32 type = nsICSSRule::UNKNOWN_RULE;
|
|
aRule->GetType(type);
|
|
if (nsICSSRule::NAMESPACE_RULE == type) {
|
|
if (!mInner->mNameSpaceMap) {
|
|
mInner->mNameSpaceMap = nsXMLNameSpaceMap::Create();
|
|
NS_ENSURE_TRUE(mInner->mNameSpaceMap, NS_ERROR_OUT_OF_MEMORY);
|
|
}
|
|
|
|
nsCOMPtr<nsICSSNameSpaceRule> nameSpaceRule(do_QueryInterface(aRule));
|
|
|
|
nsCOMPtr<nsIAtom> prefix;
|
|
nsAutoString urlSpec;
|
|
nameSpaceRule->GetPrefix(*getter_AddRefs(prefix));
|
|
nameSpaceRule->GetURLSpec(urlSpec);
|
|
|
|
mInner->mNameSpaceMap->AddPrefix(prefix, urlSpec);
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::ReplaceStyleRule(nsICSSRule* aOld, nsICSSRule* aNew)
|
|
{
|
|
NS_PRECONDITION(mInner->mOrderedRules.Count() != 0, "can't have old rule");
|
|
NS_PRECONDITION(mInner->mComplete, "No replacing in an incomplete sheet!");
|
|
|
|
if (NS_SUCCEEDED(WillDirty())) {
|
|
PRInt32 index = mInner->mOrderedRules.IndexOf(aOld);
|
|
NS_ENSURE_TRUE(index != -1, NS_ERROR_UNEXPECTED);
|
|
mInner->mOrderedRules.ReplaceObjectAt(aNew, index);
|
|
|
|
aNew->SetStyleSheet(this);
|
|
aOld->SetStyleSheet(nsnull);
|
|
DidDirty();
|
|
#ifdef DEBUG
|
|
PRInt32 type = nsICSSRule::UNKNOWN_RULE;
|
|
aNew->GetType(type);
|
|
NS_ASSERTION(nsICSSRule::NAMESPACE_RULE != type, "not yet implemented");
|
|
aOld->GetType(type);
|
|
NS_ASSERTION(nsICSSRule::NAMESPACE_RULE != type, "not yet implemented");
|
|
#endif
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::StyleRuleCount(PRInt32& aCount) const
|
|
{
|
|
aCount = mInner->mOrderedRules.Count();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetStyleRuleAt(PRInt32 aIndex, nsICSSRule*& aRule) const
|
|
{
|
|
// Important: If this function is ever made scriptable, we must add
|
|
// a security check here. See GetCssRules below for an example.
|
|
aRule = mInner->mOrderedRules.SafeObjectAt(aIndex);
|
|
if (aRule) {
|
|
NS_ADDREF(aRule);
|
|
return NS_OK;
|
|
}
|
|
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
nsXMLNameSpaceMap*
|
|
nsCSSStyleSheet::GetNameSpaceMap() const
|
|
{
|
|
return mInner->mNameSpaceMap;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::StyleSheetCount(PRInt32& aCount) const
|
|
{
|
|
// XXX Far from an ideal way to do this, but the hope is that
|
|
// it won't be done too often. If it is, we might want to
|
|
// consider storing the children in an array.
|
|
aCount = 0;
|
|
|
|
const nsCSSStyleSheet* child = mFirstChild;
|
|
while (child) {
|
|
aCount++;
|
|
child = child->mNext;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetStyleSheetAt(PRInt32 aIndex, nsICSSStyleSheet*& aSheet) const
|
|
{
|
|
// XXX Ughh...an O(n^2) method for doing iteration. Again, we hope
|
|
// that this isn't done too often. If it is, we need to change the
|
|
// underlying storage mechanism
|
|
aSheet = nsnull;
|
|
|
|
if (mFirstChild) {
|
|
const nsCSSStyleSheet* child = mFirstChild;
|
|
while ((child) && (0 != aIndex)) {
|
|
--aIndex;
|
|
child = child->mNext;
|
|
}
|
|
|
|
aSheet = (nsICSSStyleSheet*)child;
|
|
NS_IF_ADDREF(aSheet);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSStyleSheet::EnsureUniqueInner()
|
|
{
|
|
if (1 < mInner->mSheets.Count()) {
|
|
nsCSSStyleSheetInner* clone = mInner->CloneFor(this);
|
|
if (clone) {
|
|
mInner->RemoveSheet(this);
|
|
mInner = clone;
|
|
}
|
|
else {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::Clone(nsICSSStyleSheet* aCloneParent,
|
|
nsICSSImportRule* aCloneOwnerRule,
|
|
nsIDocument* aCloneDocument,
|
|
nsIDOMNode* aCloneOwningNode,
|
|
nsICSSStyleSheet** aClone) const
|
|
{
|
|
NS_PRECONDITION(aClone, "Null out param!");
|
|
nsCSSStyleSheet* clone = new nsCSSStyleSheet(*this,
|
|
aCloneParent,
|
|
aCloneOwnerRule,
|
|
aCloneDocument,
|
|
aCloneOwningNode);
|
|
if (clone) {
|
|
*aClone = static_cast<nsICSSStyleSheet*>(clone);
|
|
NS_ADDREF(*aClone);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static void
|
|
ListRules(const nsCOMArray<nsICSSRule>& aRules, FILE* aOut, PRInt32 aIndent)
|
|
{
|
|
for (PRInt32 index = aRules.Count() - 1; index >= 0; --index) {
|
|
aRules.ObjectAt(index)->List(aOut, aIndent);
|
|
}
|
|
}
|
|
|
|
struct ListEnumData {
|
|
ListEnumData(FILE* aOut, PRInt32 aIndent)
|
|
: mOut(aOut),
|
|
mIndent(aIndent)
|
|
{
|
|
}
|
|
FILE* mOut;
|
|
PRInt32 mIndent;
|
|
};
|
|
|
|
void nsCSSStyleSheet::List(FILE* out, PRInt32 aIndent) const
|
|
{
|
|
|
|
PRInt32 index;
|
|
|
|
// Indent
|
|
for (index = aIndent; --index >= 0; ) fputs(" ", out);
|
|
|
|
fputs("CSS Style Sheet: ", out);
|
|
nsCAutoString urlSpec;
|
|
nsresult rv = mInner->mSheetURI->GetSpec(urlSpec);
|
|
if (NS_SUCCEEDED(rv) && !urlSpec.IsEmpty()) {
|
|
fputs(urlSpec.get(), out);
|
|
}
|
|
|
|
if (mMedia) {
|
|
fputs(" media: ", out);
|
|
nsAutoString buffer;
|
|
mMedia->GetText(buffer);
|
|
fputs(NS_ConvertUTF16toUTF8(buffer).get(), out);
|
|
}
|
|
fputs("\n", out);
|
|
|
|
const nsCSSStyleSheet* child = mFirstChild;
|
|
while (nsnull != child) {
|
|
child->List(out, aIndent + 1);
|
|
child = child->mNext;
|
|
}
|
|
|
|
fputs("Rules in source order:\n", out);
|
|
ListRules(mInner->mOrderedRules, out, aIndent);
|
|
}
|
|
#endif
|
|
|
|
static PRBool PR_CALLBACK
|
|
EnumClearRuleCascades(void* aProcessor, void* aData)
|
|
{
|
|
nsCSSRuleProcessor* processor =
|
|
static_cast<nsCSSRuleProcessor*>(aProcessor);
|
|
processor->ClearRuleCascades();
|
|
return PR_TRUE;
|
|
}
|
|
|
|
void
|
|
nsCSSStyleSheet::ClearRuleCascades()
|
|
{
|
|
if (mRuleProcessors) {
|
|
mRuleProcessors->EnumerateForwards(EnumClearRuleCascades, nsnull);
|
|
}
|
|
if (mParent) {
|
|
nsCSSStyleSheet* parent = (nsCSSStyleSheet*)mParent;
|
|
parent->ClearRuleCascades();
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
nsCSSStyleSheet::WillDirty()
|
|
{
|
|
if (!mInner->mComplete) {
|
|
// Do nothing
|
|
return NS_OK;
|
|
}
|
|
|
|
return EnsureUniqueInner();
|
|
}
|
|
|
|
void
|
|
nsCSSStyleSheet::DidDirty()
|
|
{
|
|
ClearRuleCascades();
|
|
mDirty = PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
nsCSSStyleSheet::SubjectSubsumesInnerPrincipal() const
|
|
{
|
|
// Get the security manager and do the subsumes check
|
|
nsIScriptSecurityManager *securityManager =
|
|
nsContentUtils::GetSecurityManager();
|
|
|
|
nsCOMPtr<nsIPrincipal> subjectPrincipal;
|
|
securityManager->GetSubjectPrincipal(getter_AddRefs(subjectPrincipal));
|
|
|
|
if (!subjectPrincipal) {
|
|
return NS_ERROR_DOM_SECURITY_ERR;
|
|
}
|
|
|
|
PRBool subsumes;
|
|
nsresult rv = subjectPrincipal->Subsumes(mInner->mPrincipal, &subsumes);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (subsumes) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsContentUtils::IsCallerTrustedForWrite()) {
|
|
return NS_ERROR_DOM_SECURITY_ERR;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::IsModified(PRBool* aSheetModified) const
|
|
{
|
|
*aSheetModified = mDirty;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetModified(PRBool aModified)
|
|
{
|
|
mDirty = aModified;
|
|
return NS_OK;
|
|
}
|
|
|
|
// nsIDOMStyleSheet interface
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetType(nsAString& aType)
|
|
{
|
|
aType.AssignLiteral("text/css");
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetDisabled(PRBool* aDisabled)
|
|
{
|
|
*aDisabled = mDisabled;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::SetDisabled(PRBool aDisabled)
|
|
{
|
|
// DOM method, so handle BeginUpdate/EndUpdate
|
|
MOZ_AUTO_DOC_UPDATE(mDocument, UPDATE_STYLE, PR_TRUE);
|
|
nsresult rv = nsCSSStyleSheet::SetEnabled(!aDisabled);
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetOwnerNode(nsIDOMNode** aOwnerNode)
|
|
{
|
|
*aOwnerNode = mOwningNode;
|
|
NS_IF_ADDREF(*aOwnerNode);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetParentStyleSheet(nsIDOMStyleSheet** aParentStyleSheet)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aParentStyleSheet);
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (mParent) {
|
|
rv = mParent->QueryInterface(NS_GET_IID(nsIDOMStyleSheet),
|
|
(void **)aParentStyleSheet);
|
|
} else {
|
|
*aParentStyleSheet = nsnull;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetHref(nsAString& aHref)
|
|
{
|
|
if (mInner->mOriginalSheetURI) {
|
|
nsCAutoString str;
|
|
mInner->mOriginalSheetURI->GetSpec(str);
|
|
CopyUTF8toUTF16(str, aHref);
|
|
} else {
|
|
SetDOMStringToNull(aHref);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetTitle(nsString& aTitle) const
|
|
{
|
|
aTitle = mTitle;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetTitle(nsAString& aTitle)
|
|
{
|
|
aTitle.Assign(mTitle);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetMedia(nsIDOMMediaList** aMedia)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aMedia);
|
|
*aMedia = nsnull;
|
|
|
|
if (!mMedia) {
|
|
mMedia = new nsMediaList();
|
|
NS_ENSURE_TRUE(mMedia, NS_ERROR_OUT_OF_MEMORY);
|
|
mMedia->SetStyleSheet(this);
|
|
}
|
|
|
|
*aMedia = mMedia;
|
|
NS_ADDREF(*aMedia);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetOwnerRule(nsIDOMCSSRule** aOwnerRule)
|
|
{
|
|
if (mOwnerRule) {
|
|
return mOwnerRule->GetDOMRule(aOwnerRule);
|
|
}
|
|
|
|
*aOwnerRule = nsnull;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::GetCssRules(nsIDOMCSSRuleList** aCssRules)
|
|
{
|
|
// No doing this on incomplete sheets!
|
|
PRBool complete;
|
|
GetComplete(complete);
|
|
if (!complete) {
|
|
return NS_ERROR_DOM_INVALID_ACCESS_ERR;
|
|
}
|
|
|
|
//-- Security check: Only scripts whose principal subsumes that of the
|
|
// style sheet can access rule collections.
|
|
nsresult rv = SubjectSubsumesInnerPrincipal();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// OK, security check passed, so get the rule collection
|
|
if (nsnull == mRuleCollection) {
|
|
mRuleCollection = new CSSRuleListImpl(this);
|
|
if (nsnull == mRuleCollection) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
NS_ADDREF(mRuleCollection);
|
|
}
|
|
|
|
*aCssRules = mRuleCollection;
|
|
NS_ADDREF(mRuleCollection);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::InsertRule(const nsAString& aRule,
|
|
PRUint32 aIndex,
|
|
PRUint32* aReturn)
|
|
{
|
|
//-- Security check: Only scripts whose principal subsumes that of the
|
|
// style sheet can modify rule collections.
|
|
nsresult rv = SubjectSubsumesInnerPrincipal();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return InsertRuleInternal(aRule, aIndex, aReturn);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::InsertRuleInternal(const nsAString& aRule,
|
|
PRUint32 aIndex,
|
|
PRUint32* aReturn)
|
|
{
|
|
// No doing this if the sheet is not complete!
|
|
PRBool complete;
|
|
GetComplete(complete);
|
|
if (!complete) {
|
|
return NS_ERROR_DOM_INVALID_ACCESS_ERR;
|
|
}
|
|
|
|
if (aRule.IsEmpty()) {
|
|
// Nothing to do here
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult result;
|
|
result = WillDirty();
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
if (aIndex > PRUint32(mInner->mOrderedRules.Count()))
|
|
return NS_ERROR_DOM_INDEX_SIZE_ERR;
|
|
|
|
NS_ASSERTION(PRUint32(mInner->mOrderedRules.Count()) <= PR_INT32_MAX,
|
|
"Too many style rules!");
|
|
|
|
// Hold strong ref to the CSSLoader in case the document update
|
|
// kills the document
|
|
nsCOMPtr<nsICSSLoader> loader;
|
|
if (mDocument) {
|
|
loader = mDocument->CSSLoader();
|
|
NS_ASSERTION(loader, "Document with no CSS loader!");
|
|
}
|
|
|
|
nsCOMPtr<nsICSSParser> css;
|
|
if (loader) {
|
|
result = loader->GetParserFor(this, getter_AddRefs(css));
|
|
}
|
|
else {
|
|
result = NS_NewCSSParser(getter_AddRefs(css));
|
|
if (css) {
|
|
css->SetStyleSheet(this);
|
|
}
|
|
}
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
mozAutoDocUpdate updateBatch(mDocument, UPDATE_STYLE, PR_TRUE);
|
|
|
|
nsCOMArray<nsICSSRule> rules;
|
|
result = css->ParseRule(aRule, mInner->mSheetURI, mInner->mBaseURI,
|
|
mInner->mPrincipal, rules);
|
|
if (NS_FAILED(result))
|
|
return result;
|
|
|
|
PRInt32 rulecount = rules.Count();
|
|
if (rulecount == 0) {
|
|
// Since we know aRule was not an empty string, just throw
|
|
return NS_ERROR_DOM_SYNTAX_ERR;
|
|
}
|
|
|
|
// Hierarchy checking. Just check the first and last rule in the list.
|
|
|
|
// check that we're not inserting before a charset rule
|
|
PRInt32 nextType = nsICSSRule::UNKNOWN_RULE;
|
|
nsICSSRule* nextRule = mInner->mOrderedRules.SafeObjectAt(aIndex);
|
|
if (nextRule) {
|
|
nextRule->GetType(nextType);
|
|
if (nextType == nsICSSRule::CHARSET_RULE) {
|
|
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
|
|
}
|
|
|
|
// check last rule in list
|
|
nsICSSRule* lastRule = rules.ObjectAt(rulecount - 1);
|
|
PRInt32 lastType = nsICSSRule::UNKNOWN_RULE;
|
|
lastRule->GetType(lastType);
|
|
|
|
if (nextType == nsICSSRule::IMPORT_RULE &&
|
|
lastType != nsICSSRule::CHARSET_RULE &&
|
|
lastType != nsICSSRule::IMPORT_RULE) {
|
|
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
|
|
}
|
|
|
|
if (nextType == nsICSSRule::NAMESPACE_RULE &&
|
|
lastType != nsICSSRule::CHARSET_RULE &&
|
|
lastType != nsICSSRule::IMPORT_RULE &&
|
|
lastType != nsICSSRule::NAMESPACE_RULE) {
|
|
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
|
|
}
|
|
}
|
|
|
|
// check first rule in list
|
|
nsICSSRule* firstRule = rules.ObjectAt(0);
|
|
PRInt32 firstType = nsICSSRule::UNKNOWN_RULE;
|
|
firstRule->GetType(firstType);
|
|
if (aIndex != 0) {
|
|
if (firstType == nsICSSRule::CHARSET_RULE) { // no inserting charset at nonzero position
|
|
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
|
|
}
|
|
|
|
nsICSSRule* prevRule = mInner->mOrderedRules.SafeObjectAt(aIndex - 1);
|
|
PRInt32 prevType = nsICSSRule::UNKNOWN_RULE;
|
|
prevRule->GetType(prevType);
|
|
|
|
if (firstType == nsICSSRule::IMPORT_RULE &&
|
|
prevType != nsICSSRule::CHARSET_RULE &&
|
|
prevType != nsICSSRule::IMPORT_RULE) {
|
|
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
|
|
}
|
|
|
|
if (firstType == nsICSSRule::NAMESPACE_RULE &&
|
|
prevType != nsICSSRule::CHARSET_RULE &&
|
|
prevType != nsICSSRule::IMPORT_RULE &&
|
|
prevType != nsICSSRule::NAMESPACE_RULE) {
|
|
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
|
|
}
|
|
}
|
|
|
|
PRBool insertResult = mInner->mOrderedRules.InsertObjectsAt(rules, aIndex);
|
|
NS_ENSURE_TRUE(insertResult, NS_ERROR_OUT_OF_MEMORY);
|
|
DidDirty();
|
|
|
|
for (PRInt32 counter = 0; counter < rulecount; counter++) {
|
|
nsICSSRule* cssRule = rules.ObjectAt(counter);
|
|
cssRule->SetStyleSheet(this);
|
|
|
|
PRInt32 type = nsICSSRule::UNKNOWN_RULE;
|
|
cssRule->GetType(type);
|
|
if (type == nsICSSRule::NAMESPACE_RULE) {
|
|
if (!mInner->mNameSpaceMap) {
|
|
mInner->mNameSpaceMap = nsXMLNameSpaceMap::Create();
|
|
NS_ENSURE_TRUE(mInner->mNameSpaceMap, NS_ERROR_OUT_OF_MEMORY);
|
|
}
|
|
|
|
nsCOMPtr<nsICSSNameSpaceRule> nameSpaceRule(do_QueryInterface(cssRule));
|
|
|
|
nsCOMPtr<nsIAtom> prefix;
|
|
nsAutoString urlSpec;
|
|
nameSpaceRule->GetPrefix(*getter_AddRefs(prefix));
|
|
nameSpaceRule->GetURLSpec(urlSpec);
|
|
|
|
mInner->mNameSpaceMap->AddPrefix(prefix, urlSpec);
|
|
}
|
|
|
|
// We don't notify immediately for @import rules, but rather when
|
|
// the sheet the rule is importing is loaded
|
|
PRBool notify = PR_TRUE;
|
|
if (type == nsICSSRule::IMPORT_RULE) {
|
|
nsCOMPtr<nsIDOMCSSImportRule> importRule(do_QueryInterface(cssRule));
|
|
NS_ASSERTION(importRule, "Rule which has type IMPORT_RULE and does not implement nsIDOMCSSImportRule!");
|
|
nsCOMPtr<nsIDOMCSSStyleSheet> childSheet;
|
|
importRule->GetStyleSheet(getter_AddRefs(childSheet));
|
|
if (!childSheet) {
|
|
notify = PR_FALSE;
|
|
}
|
|
}
|
|
if (mDocument && notify) {
|
|
mDocument->StyleRuleAdded(this, cssRule);
|
|
}
|
|
}
|
|
|
|
if (loader) {
|
|
loader->RecycleParser(css);
|
|
}
|
|
|
|
*aReturn = aIndex;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::DeleteRule(PRUint32 aIndex)
|
|
{
|
|
nsresult result = NS_ERROR_DOM_INDEX_SIZE_ERR;
|
|
// No doing this if the sheet is not complete!
|
|
PRBool complete;
|
|
GetComplete(complete);
|
|
if (!complete) {
|
|
return NS_ERROR_DOM_INVALID_ACCESS_ERR;
|
|
}
|
|
|
|
//-- Security check: Only scripts whose principal subsumes that of the
|
|
// style sheet can modify rule collections.
|
|
nsresult rv = SubjectSubsumesInnerPrincipal();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// XXX TBI: handle @rule types
|
|
mozAutoDocUpdate updateBatch(mDocument, UPDATE_STYLE, PR_TRUE);
|
|
|
|
result = WillDirty();
|
|
|
|
if (NS_SUCCEEDED(result)) {
|
|
if (aIndex >= PRUint32(mInner->mOrderedRules.Count()))
|
|
return NS_ERROR_DOM_INDEX_SIZE_ERR;
|
|
|
|
NS_ASSERTION(PRUint32(mInner->mOrderedRules.Count()) <= PR_INT32_MAX,
|
|
"Too many style rules!");
|
|
|
|
// Hold a strong ref to the rule so it doesn't die when we RemoveObjectAt
|
|
nsCOMPtr<nsICSSRule> rule = mInner->mOrderedRules.ObjectAt(aIndex);
|
|
if (rule) {
|
|
mInner->mOrderedRules.RemoveObjectAt(aIndex);
|
|
rule->SetStyleSheet(nsnull);
|
|
DidDirty();
|
|
|
|
if (mDocument) {
|
|
mDocument->StyleRuleRemoved(this, rule);
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::DeleteRuleFromGroup(nsICSSGroupRule* aGroup, PRUint32 aIndex)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aGroup);
|
|
NS_ASSERTION(mInner->mComplete, "No deleting from an incomplete sheet!");
|
|
nsresult result;
|
|
nsCOMPtr<nsICSSRule> rule;
|
|
result = aGroup->GetStyleRuleAt(aIndex, *getter_AddRefs(rule));
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
// check that the rule actually belongs to this sheet!
|
|
nsCOMPtr<nsIStyleSheet> ruleSheet;
|
|
rule->GetStyleSheet(*getter_AddRefs(ruleSheet));
|
|
if (this != ruleSheet) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
mozAutoDocUpdate updateBatch(mDocument, UPDATE_STYLE, PR_TRUE);
|
|
|
|
result = WillDirty();
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
result = aGroup->DeleteStyleRuleAt(aIndex);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
rule->SetStyleSheet(nsnull);
|
|
|
|
DidDirty();
|
|
|
|
if (mDocument) {
|
|
mDocument->StyleRuleRemoved(this, rule);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::InsertRuleIntoGroup(const nsAString & aRule,
|
|
nsICSSGroupRule* aGroup,
|
|
PRUint32 aIndex,
|
|
PRUint32* _retval)
|
|
{
|
|
nsresult result;
|
|
NS_ASSERTION(mInner->mComplete, "No inserting into an incomplete sheet!");
|
|
// check that the group actually belongs to this sheet!
|
|
nsCOMPtr<nsIStyleSheet> groupSheet;
|
|
aGroup->GetStyleSheet(*getter_AddRefs(groupSheet));
|
|
if (this != groupSheet) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
if (aRule.IsEmpty()) {
|
|
// Nothing to do here
|
|
return NS_OK;
|
|
}
|
|
|
|
// Hold strong ref to the CSSLoader in case the document update
|
|
// kills the document
|
|
nsCOMPtr<nsICSSLoader> loader;
|
|
if (mDocument) {
|
|
loader = mDocument->CSSLoader();
|
|
NS_ASSERTION(loader, "Document with no CSS loader!");
|
|
}
|
|
|
|
nsCOMPtr<nsICSSParser> css;
|
|
if (loader) {
|
|
result = loader->GetParserFor(this, getter_AddRefs(css));
|
|
}
|
|
else {
|
|
result = NS_NewCSSParser(getter_AddRefs(css));
|
|
if (css) {
|
|
css->SetStyleSheet(this);
|
|
}
|
|
}
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
// parse and grab the rule
|
|
mozAutoDocUpdate updateBatch(mDocument, UPDATE_STYLE, PR_TRUE);
|
|
|
|
result = WillDirty();
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
nsCOMArray<nsICSSRule> rules;
|
|
result = css->ParseRule(aRule, mInner->mSheetURI, mInner->mBaseURI,
|
|
mInner->mPrincipal, rules);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
PRInt32 rulecount = rules.Count();
|
|
if (rulecount == 0) {
|
|
// Since we know aRule was not an empty string, just throw
|
|
return NS_ERROR_DOM_SYNTAX_ERR;
|
|
}
|
|
|
|
PRInt32 counter;
|
|
nsICSSRule* rule;
|
|
for (counter = 0; counter < rulecount; counter++) {
|
|
// Only rulesets are allowed in a group as of CSS2
|
|
PRInt32 type = nsICSSRule::UNKNOWN_RULE;
|
|
rule = rules.ObjectAt(counter);
|
|
rule->GetType(type);
|
|
if (type != nsICSSRule::STYLE_RULE) {
|
|
return NS_ERROR_DOM_HIERARCHY_REQUEST_ERR;
|
|
}
|
|
}
|
|
|
|
result = aGroup->InsertStyleRulesAt(aIndex, rules);
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
DidDirty();
|
|
for (counter = 0; counter < rulecount; counter++) {
|
|
rule = rules.ObjectAt(counter);
|
|
|
|
if (mDocument) {
|
|
mDocument->StyleRuleAdded(this, rule);
|
|
}
|
|
}
|
|
|
|
if (loader) {
|
|
loader->RecycleParser(css);
|
|
}
|
|
|
|
*_retval = aIndex;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::ReplaceRuleInGroup(nsICSSGroupRule* aGroup,
|
|
nsICSSRule* aOld, nsICSSRule* aNew)
|
|
{
|
|
nsresult result;
|
|
NS_PRECONDITION(mInner->mComplete, "No replacing in an incomplete sheet!");
|
|
#ifdef DEBUG
|
|
{
|
|
nsCOMPtr<nsIStyleSheet> groupSheet;
|
|
aGroup->GetStyleSheet(*getter_AddRefs(groupSheet));
|
|
NS_ASSERTION(this == groupSheet, "group doesn't belong to this sheet");
|
|
}
|
|
#endif
|
|
result = WillDirty();
|
|
NS_ENSURE_SUCCESS(result, result);
|
|
|
|
result = aGroup->ReplaceStyleRule(aOld, aNew);
|
|
DidDirty();
|
|
return result;
|
|
}
|
|
|
|
// nsICSSLoaderObserver implementation
|
|
NS_IMETHODIMP
|
|
nsCSSStyleSheet::StyleSheetLoaded(nsICSSStyleSheet* aSheet,
|
|
PRBool aWasAlternate,
|
|
nsresult aStatus)
|
|
{
|
|
#ifdef DEBUG
|
|
nsCOMPtr<nsIStyleSheet> styleSheet(do_QueryInterface(aSheet));
|
|
NS_ASSERTION(styleSheet, "Sheet not implementing nsIStyleSheet!\n");
|
|
nsCOMPtr<nsIStyleSheet> parentSheet;
|
|
aSheet->GetParentSheet(*getter_AddRefs(parentSheet));
|
|
nsCOMPtr<nsIStyleSheet> thisSheet;
|
|
QueryInterface(NS_GET_IID(nsIStyleSheet), getter_AddRefs(thisSheet));
|
|
NS_ASSERTION(thisSheet == parentSheet, "We are being notified of a sheet load for a sheet that is not our child!\n");
|
|
#endif
|
|
|
|
if (mDocument && NS_SUCCEEDED(aStatus)) {
|
|
nsCOMPtr<nsICSSImportRule> ownerRule;
|
|
aSheet->GetOwnerRule(getter_AddRefs(ownerRule));
|
|
|
|
mozAutoDocUpdate updateBatch(mDocument, UPDATE_STYLE, PR_TRUE);
|
|
|
|
// XXXldb @import rules shouldn't even implement nsIStyleRule (but
|
|
// they do)!
|
|
nsCOMPtr<nsIStyleRule> styleRule(do_QueryInterface(ownerRule));
|
|
|
|
mDocument->StyleRuleAdded(this, styleRule);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
NS_NewCSSStyleSheet(nsICSSStyleSheet** aInstancePtrResult)
|
|
{
|
|
*aInstancePtrResult = nsnull;
|
|
nsCSSStyleSheet *it = new nsCSSStyleSheet();
|
|
|
|
if (!it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
NS_ADDREF(it);
|
|
|
|
if (!it->mInner || !it->mInner->mPrincipal) {
|
|
NS_RELEASE(it);
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
*aInstancePtrResult = it;
|
|
return NS_OK;
|
|
}
|