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/*
* Copyright (C) 2008, 2011 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "HTMLPlugInImageElement.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "HTMLImageLoader.h"
#include "HTMLNames.h"
#include "Image.h"
#include "Page.h"
#include "RenderEmbeddedObject.h"
#include "RenderImage.h"
#include "SecurityOrigin.h"
namespace WebCore {
HTMLPlugInImageElement::HTMLPlugInImageElement(const QualifiedName& tagName, Document* document, bool createdByParser, PreferPlugInsForImagesOption preferPlugInsForImagesOption)
: HTMLPlugInElement(tagName, document)
// m_needsWidgetUpdate(!createdByParser) allows HTMLObjectElement to delay
// widget updates until after all children are parsed. For HTMLEmbedElement
// this delay is unnecessary, but it is simpler to make both classes share
// the same codepath in this class.
, m_needsWidgetUpdate(!createdByParser)
, m_shouldPreferPlugInsForImages(preferPlugInsForImagesOption == ShouldPreferPlugInsForImages)
{
}
RenderEmbeddedObject* HTMLPlugInImageElement::renderEmbeddedObject() const
{
// HTMLObjectElement and HTMLEmbedElement may return arbitrary renderers
// when using fallback content.
if (!renderer() || !renderer()->isEmbeddedObject())
return 0;
return toRenderEmbeddedObject(renderer());
}
bool HTMLPlugInImageElement::isImageType()
{
if (m_serviceType.isEmpty() && protocolIs(m_url, "data"))
m_serviceType = mimeTypeFromDataURL(m_url);
if (Frame* frame = document()->frame()) {
KURL completedURL = frame->loader()->completeURL(m_url);
return frame->loader()->client()->objectContentType(completedURL, m_serviceType, shouldPreferPlugInsForImages()) == ObjectContentImage;
}
return Image::supportsType(m_serviceType);
}
// We don't use m_url, as it may not be the final URL that the object loads,
// depending on <param> values.
bool HTMLPlugInImageElement::allowedToLoadFrameURL(const String& url)
{
ASSERT(document());
ASSERT(document()->frame());
if (document()->frame()->page()->frameCount() >= Page::maxNumberOfFrames)
return false;
KURL completeURL = document()->completeURL(url);
if (contentFrame() && protocolIsJavaScript(completeURL)
&& !document()->securityOrigin()->canAccess(contentDocument()->securityOrigin()))
return false;
// We allow one level of self-reference because some sites depend on that.
// But we don't allow more than one.
bool foundSelfReference = false;
for (Frame* frame = document()->frame(); frame; frame = frame->tree()->parent()) {
if (equalIgnoringFragmentIdentifier(frame->document()->url(), completeURL)) {
if (foundSelfReference)
return false;
foundSelfReference = true;
}
}
return true;
}
// We don't use m_url, or m_serviceType as they may not be the final values
// that <object> uses depending on <param> values.
bool HTMLPlugInImageElement::wouldLoadAsNetscapePlugin(const String& url, const String& serviceType)
{
ASSERT(document());
ASSERT(document()->frame());
FrameLoader* frameLoader = document()->frame()->loader();
ASSERT(frameLoader);
KURL completedURL;
if (!url.isEmpty())
completedURL = frameLoader->completeURL(url);
if (frameLoader->client()->objectContentType(completedURL, serviceType, shouldPreferPlugInsForImages()) == ObjectContentNetscapePlugin)
return true;
return false;
}
RenderObject* HTMLPlugInImageElement::createRenderer(RenderArena* arena, RenderStyle* style)
{
// Fallback content breaks the DOM->Renderer class relationship of this
// class and all superclasses because createObject won't necessarily
// return a RenderEmbeddedObject, RenderPart or even RenderWidget.
if (useFallbackContent())
return RenderObject::createObject(this, style);
if (isImageType()) {
RenderImage* image = new (arena) RenderImage(this);
image->setImageResource(RenderImageResource::create());
return image;
}
return new (arena) RenderEmbeddedObject(this);
}
void HTMLPlugInImageElement::recalcStyle(StyleChange ch)
{
// FIXME: Why is this necessary? Manual re-attach is almost always wrong.
if (!useFallbackContent() && needsWidgetUpdate() && renderer() && !isImageType()) {
detach();
attach();
}
HTMLPlugInElement::recalcStyle(ch);
}
void HTMLPlugInImageElement::attach()
{
bool isImage = isImageType();
if (!isImage)
queuePostAttachCallback(&HTMLPlugInImageElement::updateWidgetCallback, this);
HTMLPlugInElement::attach();
if (isImage && renderer() && !useFallbackContent()) {
if (!m_imageLoader)
m_imageLoader = adoptPtr(new HTMLImageLoader(this));
m_imageLoader->updateFromElement();
}
}
void HTMLPlugInImageElement::detach()
{
// FIXME: Because of the insanity that is HTMLPlugInImageElement::recalcStyle,
// we can end up detaching during an attach() call, before we even have a
// renderer. In that case, don't mark the widget for update.
if (attached() && renderer() && !useFallbackContent())
// Update the widget the next time we attach (detaching destroys the plugin).
setNeedsWidgetUpdate(true);
HTMLPlugInElement::detach();
}
void HTMLPlugInImageElement::updateWidgetIfNecessary()
{
document()->updateStyleIfNeeded();
if (!needsWidgetUpdate() || useFallbackContent() || isImageType())
return;
if (!renderEmbeddedObject() || renderEmbeddedObject()->pluginCrashedOrWasMissing())
return;
updateWidget(CreateOnlyNonNetscapePlugins);
}
void HTMLPlugInImageElement::finishParsingChildren()
{
HTMLPlugInElement::finishParsingChildren();
if (useFallbackContent())
return;
setNeedsWidgetUpdate(true);
if (inDocument())
setNeedsStyleRecalc();
}
void HTMLPlugInImageElement::willMoveToNewOwnerDocument()
{
if (m_imageLoader)
m_imageLoader->elementWillMoveToNewOwnerDocument();
HTMLPlugInElement::willMoveToNewOwnerDocument();
}
void HTMLPlugInImageElement::updateWidgetCallback(Node* n)
{
static_cast<HTMLPlugInImageElement*>(n)->updateWidgetIfNecessary();
}
} // namespace WebCore