/* -*- 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 Communicator client code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * 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 ***** */ /* DOM object for element.style */ #include "nsDOMCSSAttrDeclaration.h" #include "nsCSSDeclaration.h" #include "nsIDocument.h" #include "nsHTMLAtoms.h" #include "nsIDOMMutationEvent.h" #include "nsICSSStyleRule.h" #include "nsICSSLoader.h" #include "nsICSSParser.h" #include "nsIURI.h" #include "nsINameSpaceManager.h" #include "nsStyleConsts.h" #include "nsContentUtils.h" #include "nsIContent.h" nsDOMCSSAttributeDeclaration::nsDOMCSSAttributeDeclaration(nsIContent *aContent) { MOZ_COUNT_CTOR(nsDOMCSSAttributeDeclaration); // This reference is not reference-counted. The content // object tells us when its about to go away. NS_ASSERTION(aContent && aContent->IsNodeOfType(nsINode::eELEMENT), "Inline style for non-element content?"); mContent = aContent; } nsDOMCSSAttributeDeclaration::~nsDOMCSSAttributeDeclaration() { MOZ_COUNT_DTOR(nsDOMCSSAttributeDeclaration); } NS_IMPL_ADDREF(nsDOMCSSAttributeDeclaration) NS_IMPL_RELEASE(nsDOMCSSAttributeDeclaration) void nsDOMCSSAttributeDeclaration::DropReference() { mContent = nsnull; } nsresult nsDOMCSSAttributeDeclaration::DeclarationChanged() { NS_ASSERTION(mContent, "Must have content node to set the decl!"); nsICSSStyleRule* oldRule = mContent->GetInlineStyleRule(); NS_ASSERTION(oldRule, "content must have rule"); nsCOMPtr newRule = oldRule->DeclarationChanged(PR_FALSE); if (!newRule) { return NS_ERROR_OUT_OF_MEMORY; } return mContent->SetInlineStyleRule(newRule, PR_TRUE); } nsresult nsDOMCSSAttributeDeclaration::GetCSSDeclaration(nsCSSDeclaration **aDecl, PRBool aAllocate) { nsresult result = NS_OK; *aDecl = nsnull; if (mContent) { nsICSSStyleRule* cssRule = mContent->GetInlineStyleRule(); if (cssRule) { *aDecl = cssRule->GetDeclaration(); } else if (aAllocate) { nsCSSDeclaration *decl = new nsCSSDeclaration(); if (!decl) return NS_ERROR_OUT_OF_MEMORY; if (!decl->InitializeEmpty()) { decl->RuleAbort(); return NS_ERROR_OUT_OF_MEMORY; } nsCOMPtr newRule; result = NS_NewCSSStyleRule(getter_AddRefs(newRule), nsnull, decl); if (NS_FAILED(result)) { decl->RuleAbort(); return result; } result = mContent->SetInlineStyleRule(newRule, PR_FALSE); if (NS_SUCCEEDED(result)) { *aDecl = decl; } } } return result; } /* * This is a utility function. It will only fail if it can't get a * parser. This means it can return NS_OK without aURI or aCSSLoader * being initialized. */ nsresult nsDOMCSSAttributeDeclaration::GetCSSParsingEnvironment(nsIURI** aSheetURI, nsIURI** aBaseURI, nsICSSLoader** aCSSLoader, nsICSSParser** aCSSParser) { NS_ASSERTION(mContent, "Something is severely broken -- there should be an nsIContent here!"); // null out the out params since some of them may not get initialized below *aSheetURI = nsnull; *aBaseURI = nsnull; *aCSSLoader = nsnull; *aCSSParser = nsnull; nsIDocument* doc = mContent->GetOwnerDoc(); if (!doc) { // document has been destroyed return NS_ERROR_NOT_AVAILABLE; } nsCOMPtr baseURI = mContent->GetBaseURI(); nsCOMPtr sheetURI = doc->GetDocumentURI(); NS_ADDREF(*aCSSLoader = doc->CSSLoader()); nsresult rv = NS_OK; // Note: parsers coming from a CSSLoader for a document already have // the right case-sensitivity, quirkiness, etc. rv = (*aCSSLoader)->GetParserFor(nsnull, aCSSParser); if (NS_FAILED(rv)) { return rv; } baseURI.swap(*aBaseURI); sheetURI.swap(*aSheetURI); return NS_OK; } NS_IMETHODIMP nsDOMCSSAttributeDeclaration::GetParentRule(nsIDOMCSSRule **aParent) { NS_ENSURE_ARG_POINTER(aParent); *aParent = nsnull; return NS_OK; }