227 lines
8.3 KiB
C++
227 lines
8.3 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* (C) 2000 Stefan Schimanski (1Stein@gmx.de)
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* Copyright (C) 2004-2020 Apple Inc. All rights reserved.
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* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "HTMLEmbedElement.h"
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#include "CSSPropertyNames.h"
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#include "ElementAncestorIterator.h"
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#include "Frame.h"
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#include "FrameLoader.h"
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#include "FrameView.h"
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#include "HTMLImageLoader.h"
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#include "HTMLNames.h"
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#include "HTMLObjectElement.h"
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#include "HTMLParserIdioms.h"
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#include "PluginDocument.h"
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#include "RenderEmbeddedObject.h"
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#include "RenderWidget.h"
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#include "Settings.h"
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#include "SubframeLoader.h"
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#include <wtf/IsoMallocInlines.h>
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#include <wtf/Ref.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLEmbedElement);
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using namespace HTMLNames;
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inline HTMLEmbedElement::HTMLEmbedElement(const QualifiedName& tagName, Document& document)
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: HTMLPlugInImageElement(tagName, document)
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{
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ASSERT(hasTagName(embedTag));
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}
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Ref<HTMLEmbedElement> HTMLEmbedElement::create(const QualifiedName& tagName, Document& document)
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{
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return adoptRef(*new HTMLEmbedElement(tagName, document));
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}
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Ref<HTMLEmbedElement> HTMLEmbedElement::create(Document& document)
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{
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return create(embedTag, document);
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}
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static inline RenderWidget* findWidgetRenderer(const Node* node)
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{
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if (!node->renderer())
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node = ancestorsOfType<HTMLObjectElement>(*node).first();
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if (node && is<RenderWidget>(node->renderer()))
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return downcast<RenderWidget>(node->renderer());
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return nullptr;
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}
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RenderWidget* HTMLEmbedElement::renderWidgetLoadingPlugin() const
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{
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RenderWidget* widget = HTMLPlugInImageElement::renderWidgetLoadingPlugin();
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return widget ? widget : findWidgetRenderer(this);
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}
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void HTMLEmbedElement::collectPresentationalHintsForAttribute(const QualifiedName& name, const AtomString& value, MutableStyleProperties& style)
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{
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if (name == hiddenAttr) {
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if (equalLettersIgnoringASCIICase(value, "yes") || equalLettersIgnoringASCIICase(value, "true")) {
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addPropertyToPresentationalHintStyle(style, CSSPropertyWidth, 0, CSSUnitType::CSS_PX);
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addPropertyToPresentationalHintStyle(style, CSSPropertyHeight, 0, CSSUnitType::CSS_PX);
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}
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} else
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HTMLPlugInImageElement::collectPresentationalHintsForAttribute(name, value, style);
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}
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static bool hasTypeOrSrc(const HTMLEmbedElement& embed)
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{
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return embed.hasAttributeWithoutSynchronization(typeAttr) || embed.hasAttributeWithoutSynchronization(srcAttr);
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}
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void HTMLEmbedElement::parseAttribute(const QualifiedName& name, const AtomString& value)
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{
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if (name == typeAttr) {
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m_serviceType = value.string().left(value.find(';')).convertToASCIILowercase();
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// FIXME: The only difference between this and HTMLObjectElement's corresponding
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// code is that HTMLObjectElement does setNeedsWidgetUpdate(true). Consider moving
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// this up to the HTMLPlugInImageElement to be shared.
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if (renderer() && !hasTypeOrSrc(*this))
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invalidateStyle();
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} else if (name == codeAttr) {
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m_url = stripLeadingAndTrailingHTMLSpaces(value);
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// FIXME: Why no call to updateImageLoaderWithNewURLSoon?
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// FIXME: If both code and src attributes are specified, last one parsed/changed wins. That can't be right!
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} else if (name == srcAttr) {
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m_url = stripLeadingAndTrailingHTMLSpaces(value);
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updateImageLoaderWithNewURLSoon();
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if (renderer() && !hasTypeOrSrc(*this))
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invalidateStyle();
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// FIXME: If both code and src attributes are specified, last one parsed/changed wins. That can't be right!
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} else
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HTMLPlugInImageElement::parseAttribute(name, value);
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}
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void HTMLEmbedElement::parametersForPlugin(Vector<String>& paramNames, Vector<String>& paramValues)
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{
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if (!hasAttributes())
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return;
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for (const Attribute& attribute : attributesIterator()) {
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paramNames.append(attribute.localName().string());
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paramValues.append(attribute.value().string());
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}
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}
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// FIXME: This should be unified with HTMLObjectElement::updateWidget and
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// moved down into HTMLPluginImageElement.cpp
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void HTMLEmbedElement::updateWidget(CreatePlugins createPlugins)
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{
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ASSERT(!renderEmbeddedObject()->isPluginUnavailable());
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ASSERT(needsWidgetUpdate());
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if (m_url.isEmpty() && m_serviceType.isEmpty()) {
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setNeedsWidgetUpdate(false);
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return;
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}
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// Note these pass m_url and m_serviceType to allow better code sharing with
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// <object> which modifies url and serviceType before calling these.
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if (!canLoadURL(m_url)) {
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setNeedsWidgetUpdate(false);
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return;
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}
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// FIXME: It's unfortunate that we have this special case here.
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// See http://trac.webkit.org/changeset/25128 and the plugins/netscape-plugin-setwindow-size.html test.
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if (createPlugins == CreatePlugins::No && wouldLoadAsPlugIn(m_url, m_serviceType))
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return;
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setNeedsWidgetUpdate(false);
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// FIXME: These should be joined into a PluginParameters class.
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Vector<String> paramNames;
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Vector<String> paramValues;
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parametersForPlugin(paramNames, paramValues);
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Ref<HTMLEmbedElement> protectedThis(*this); // Loading the plugin might remove us from the document.
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bool beforeLoadAllowedLoad = guardedDispatchBeforeLoadEvent(m_url);
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if (!beforeLoadAllowedLoad) {
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if (is<PluginDocument>(document())) {
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// Plugins inside plugin documents load differently than other plugins. By the time
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// we are here in a plugin document, the load of the plugin (which is the plugin document's
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// main resource) has already started. We need to explicitly cancel the main resource load here.
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downcast<PluginDocument>(document()).cancelManualPluginLoad();
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}
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return;
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}
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if (!renderer()) // Do not load the plugin if beforeload removed this element or its renderer.
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return;
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// Dispatching a beforeLoad event could have executed code that changed the document.
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// Make sure the URL is still safe to load.
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if (!canLoadURL(m_url))
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return;
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// FIXME: beforeLoad could have detached the renderer! Just like in the <object> case above.
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requestObject(m_url, m_serviceType, paramNames, paramValues);
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}
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bool HTMLEmbedElement::rendererIsNeeded(const RenderStyle& style)
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{
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if (!hasTypeOrSrc(*this))
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return false;
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if (isImageType())
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return HTMLPlugInImageElement::rendererIsNeeded(style);
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// If my parent is an <object> and is not set to use fallback content, I
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// should be ignored and not get a renderer.
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RefPtr<ContainerNode> parent = parentNode();
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if (is<HTMLObjectElement>(parent)) {
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if (!parent->renderer())
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return false;
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if (!downcast<HTMLObjectElement>(*parent).useFallbackContent()) {
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ASSERT(!parent->renderer()->isEmbeddedObject());
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return false;
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}
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}
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return HTMLPlugInImageElement::rendererIsNeeded(style);
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}
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bool HTMLEmbedElement::isURLAttribute(const Attribute& attribute) const
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{
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return attribute.name() == srcAttr || HTMLPlugInImageElement::isURLAttribute(attribute);
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}
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const AtomString& HTMLEmbedElement::imageSourceURL() const
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{
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return attributeWithoutSynchronization(srcAttr);
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}
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void HTMLEmbedElement::addSubresourceAttributeURLs(ListHashSet<URL>& urls) const
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{
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HTMLPlugInImageElement::addSubresourceAttributeURLs(urls);
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addSubresourceURL(urls, document().completeURL(attributeWithoutSynchronization(srcAttr)));
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}
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}
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