зеркало из https://github.com/mozilla/pjs.git
223 строки
7.1 KiB
C++
223 строки
7.1 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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/* DOM object for element.style */
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#include "nsDOMCSSAttrDeclaration.h"
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#include "mozilla/css/Declaration.h"
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#include "nsIDocument.h"
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#include "nsIDOMMutationEvent.h"
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#include "nsICSSStyleRule.h"
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#include "mozilla/css/Loader.h"
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#include "nsIURI.h"
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#include "nsINameSpaceManager.h"
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#include "nsStyleConsts.h"
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#include "nsContentUtils.h"
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#include "nsIContent.h"
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#include "nsIPrincipal.h"
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#include "nsNodeUtils.h"
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namespace css = mozilla::css;
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nsDOMCSSAttributeDeclaration::nsDOMCSSAttributeDeclaration(nsIContent *aContent
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#ifdef MOZ_SMIL
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, PRBool aIsSMILOverride
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#endif // MOZ_SMIL
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)
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: mContent(aContent)
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#ifdef MOZ_SMIL
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, mIsSMILOverride(aIsSMILOverride)
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#endif // MOZ_SMIL
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{
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MOZ_COUNT_CTOR(nsDOMCSSAttributeDeclaration);
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NS_ASSERTION(aContent && aContent->IsElement(),
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"Inline style for non-element content?");
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}
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nsDOMCSSAttributeDeclaration::~nsDOMCSSAttributeDeclaration()
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{
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MOZ_COUNT_DTOR(nsDOMCSSAttributeDeclaration);
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}
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NS_IMPL_CYCLE_COLLECTION_1(nsDOMCSSAttributeDeclaration, mContent)
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NS_INTERFACE_MAP_BEGIN(nsDOMCSSAttributeDeclaration)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRIES_CYCLE_COLLECTION(nsDOMCSSAttributeDeclaration)
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NS_IMPL_QUERY_TAIL_INHERITING(nsDOMCSSDeclaration)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMCSSAttributeDeclaration)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMCSSAttributeDeclaration)
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nsresult
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nsDOMCSSAttributeDeclaration::DeclarationChanged()
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{
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NS_ASSERTION(mContent, "Must have content node to set the decl!");
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nsICSSStyleRule* oldRule =
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#ifdef MOZ_SMIL
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mIsSMILOverride ? mContent->GetSMILOverrideStyleRule() :
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#endif // MOZ_SMIL
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mContent->GetInlineStyleRule();
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NS_ASSERTION(oldRule, "content must have rule");
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nsCOMPtr<nsICSSStyleRule> newRule = oldRule->DeclarationChanged(PR_FALSE);
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if (!newRule) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return
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#ifdef MOZ_SMIL
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mIsSMILOverride ? mContent->SetSMILOverrideStyleRule(newRule, PR_TRUE) :
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#endif // MOZ_SMIL
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mContent->SetInlineStyleRule(newRule, PR_TRUE);
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}
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nsIDocument*
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nsDOMCSSAttributeDeclaration::DocToUpdate()
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{
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// XXXbz this is a bit of a hack, especially doing it before the
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// BeginUpdate(), but this is a good chokepoint where we know we
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// plan to modify the CSSDeclaration, so need to notify
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// AttributeWillChange if this is inline style.
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#ifdef MOZ_SMIL
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if (!mIsSMILOverride)
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#endif
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{
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nsNodeUtils::AttributeWillChange(mContent, kNameSpaceID_None,
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nsGkAtoms::style,
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nsIDOMMutationEvent::MODIFICATION);
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}
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// We need GetOwnerDoc() rather than GetCurrentDoc() because it might
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// be the BeginUpdate call that inserts mContent into the document.
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return mContent->GetOwnerDoc();
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}
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nsresult
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nsDOMCSSAttributeDeclaration::GetCSSDeclaration(css::Declaration **aDecl,
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PRBool aAllocate)
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{
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nsresult result = NS_OK;
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*aDecl = nsnull;
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if (mContent) {
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nsICSSStyleRule* cssRule =
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#ifdef MOZ_SMIL
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mIsSMILOverride ? mContent->GetSMILOverrideStyleRule() :
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#endif // MOZ_SMIL
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mContent->GetInlineStyleRule();
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if (cssRule) {
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*aDecl = cssRule->GetDeclaration();
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}
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else if (aAllocate) {
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css::Declaration *decl = new css::Declaration();
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if (!decl)
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return NS_ERROR_OUT_OF_MEMORY;
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if (!decl->InitializeEmpty()) {
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decl->RuleAbort();
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsCOMPtr<nsICSSStyleRule> newRule;
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result = NS_NewCSSStyleRule(getter_AddRefs(newRule), nsnull, decl);
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if (NS_FAILED(result)) {
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decl->RuleAbort();
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return result;
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}
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result =
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#ifdef MOZ_SMIL
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mIsSMILOverride ?
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mContent->SetSMILOverrideStyleRule(newRule, PR_FALSE) :
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#endif // MOZ_SMIL
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mContent->SetInlineStyleRule(newRule, PR_FALSE);
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if (NS_SUCCEEDED(result)) {
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*aDecl = decl;
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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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/*
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* This is a utility function. It will only fail if it can't get a
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* parser. This means it can return NS_OK without aURI or aCSSLoader
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* being initialized.
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*/
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nsresult
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nsDOMCSSAttributeDeclaration::GetCSSParsingEnvironment(nsIURI** aSheetURI,
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nsIURI** aBaseURI,
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nsIPrincipal** aSheetPrincipal,
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mozilla::css::Loader** aCSSLoader)
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{
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NS_ASSERTION(mContent, "Something is severely broken -- there should be an nsIContent here!");
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// null out the out params since some of them may not get initialized below
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*aSheetURI = nsnull;
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*aBaseURI = nsnull;
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*aSheetPrincipal = nsnull;
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*aCSSLoader = nsnull;
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nsIDocument* doc = mContent->GetOwnerDoc();
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if (!doc) {
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// document has been destroyed
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return NS_ERROR_NOT_AVAILABLE;
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}
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nsCOMPtr<nsIURI> baseURI = mContent->GetBaseURI();
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nsCOMPtr<nsIURI> sheetURI = doc->GetDocumentURI();
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NS_ADDREF(*aCSSLoader = doc->CSSLoader());
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baseURI.swap(*aBaseURI);
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sheetURI.swap(*aSheetURI);
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NS_ADDREF(*aSheetPrincipal = mContent->NodePrincipal());
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return NS_OK;
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}
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NS_IMETHODIMP
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nsDOMCSSAttributeDeclaration::GetParentRule(nsIDOMCSSRule **aParent)
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{
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NS_ENSURE_ARG_POINTER(aParent);
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*aParent = nsnull;
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return NS_OK;
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}
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