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/*
* Copyright (C) 2008 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "MediaDocument.h"
#if ENABLE(VIDEO)
#include "Chrome.h"
#include "ChromeClient.h"
#include "DocumentLoader.h"
#include "EventNames.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "HTMLBodyElement.h"
#include "HTMLEmbedElement.h"
#include "HTMLHeadElement.h"
#include "HTMLHtmlElement.h"
#include "HTMLMetaElement.h"
#include "HTMLNames.h"
#include "HTMLSourceElement.h"
#include "HTMLVideoElement.h"
#include "KeyboardEvent.h"
#include "NodeList.h"
#include "Page.h"
#include "RawDataDocumentParser.h"
#include "RuntimeEnabledFeatures.h"
#include "ScriptController.h"
#include "ShadowRoot.h"
#include "TypedElementDescendantIterator.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/text/StringBuilder.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(MediaDocument);
using namespace HTMLNames;
// FIXME: Share more code with PluginDocumentParser.
class MediaDocumentParser final : public RawDataDocumentParser {
public:
static Ref<MediaDocumentParser> create(MediaDocument& document)
{
return adoptRef(*new MediaDocumentParser(document));
}
private:
MediaDocumentParser(MediaDocument& document)
: RawDataDocumentParser { document }
, m_outgoingReferrer { document.outgoingReferrer() }
{
}
void appendBytes(DocumentWriter&, const char*, size_t) final;
void createDocumentStructure();
HTMLMediaElement* m_mediaElement { nullptr };
String m_outgoingReferrer;
};
void MediaDocumentParser::createDocumentStructure()
{
auto& document = *this->document();
auto rootElement = HTMLHtmlElement::create(document);
document.appendChild(rootElement);
document.setCSSTarget(rootElement.ptr());
rootElement->insertedByParser();
if (document.frame())
document.frame()->injectUserScripts(InjectAtDocumentStart);
#if PLATFORM(IOS)
auto headElement = HTMLHeadElement::create(document);
rootElement->appendChild(headElement);
auto metaElement = HTMLMetaElement::create(document);
metaElement->setAttributeWithoutSynchronization(nameAttr, AtomicString("viewport", AtomicString::ConstructFromLiteral));
metaElement->setAttributeWithoutSynchronization(contentAttr, AtomicString("width=device-width,initial-scale=1", AtomicString::ConstructFromLiteral));
headElement->appendChild(metaElement);
#endif
auto body = HTMLBodyElement::create(document);
rootElement->appendChild(body);
auto videoElement = HTMLVideoElement::create(document);
m_mediaElement = videoElement.ptr();
videoElement->setAttributeWithoutSynchronization(controlsAttr, emptyAtom());
videoElement->setAttributeWithoutSynchronization(autoplayAttr, emptyAtom());
videoElement->setAttributeWithoutSynchronization(srcAttr, document.url().string());
if (auto loader = makeRefPtr(document.loader()))
videoElement->setAttributeWithoutSynchronization(typeAttr, loader->responseMIMEType());
if (!RuntimeEnabledFeatures::sharedFeatures().modernMediaControlsEnabled()) {
StringBuilder elementStyle;
elementStyle.appendLiteral("max-width: 100%; max-height: 100%;");
#if PLATFORM(IOS)
elementStyle.appendLiteral("width: 100%; height: auto;");
#endif
videoElement->setAttribute(styleAttr, elementStyle.toString());
}
body->appendChild(videoElement);
RefPtr<Frame> frame = document.frame();
if (!frame)
return;
frame->loader().activeDocumentLoader()->setMainResourceDataBufferingPolicy(DoNotBufferData);
frame->loader().setOutgoingReferrer(document.completeURL(m_outgoingReferrer));
}
void MediaDocumentParser::appendBytes(DocumentWriter&, const char*, size_t)
{
if (m_mediaElement)
return;
createDocumentStructure();
finish();
}
MediaDocument::MediaDocument(Frame* frame, const URL& url)
: HTMLDocument(frame, url, MediaDocumentClass)
, m_replaceMediaElementTimer(*this, &MediaDocument::replaceMediaElementTimerFired)
{
setCompatibilityMode(DocumentCompatibilityMode::QuirksMode);
lockCompatibilityMode();
if (frame)
m_outgoingReferrer = frame->loader().outgoingReferrer();
}
MediaDocument::~MediaDocument()
{
ASSERT(!m_replaceMediaElementTimer.isActive());
}
Ref<DocumentParser> MediaDocument::createParser()
{
return MediaDocumentParser::create(*this);
}
static inline HTMLVideoElement* descendantVideoElement(ContainerNode& node)
{
if (is<HTMLVideoElement>(node))
return downcast<HTMLVideoElement>(&node);
return descendantsOfType<HTMLVideoElement>(node).first();
}
static inline HTMLVideoElement* ancestorVideoElement(Node* node)
{
while (node && !is<HTMLVideoElement>(*node))
node = node->parentOrShadowHostNode();
return downcast<HTMLVideoElement>(node);
}
void MediaDocument::defaultEventHandler(Event& event)
{
// Modern media controls have their own event handling to determine when to
// pause or resume playback.
if (RuntimeEnabledFeatures::sharedFeatures().modernMediaControlsEnabled())
return;
// Match the default Quicktime plugin behavior to allow
// clicking and double-clicking to pause and play the media.
if (!is<Node>(event.target()))
return;
auto& targetNode = downcast<Node>(*event.target());
if (auto video = makeRefPtr(ancestorVideoElement(&targetNode))) {
if (event.type() == eventNames().clickEvent) {
if (!video->canPlay()) {
video->pause();
event.setDefaultHandled();
}
} else if (event.type() == eventNames().dblclickEvent) {
if (video->canPlay()) {
video->play();
event.setDefaultHandled();
}
}
}
if (!is<ContainerNode>(targetNode))
return;
auto& targetContainer = downcast<ContainerNode>(targetNode);
if (event.type() == eventNames().keydownEvent && is<KeyboardEvent>(event)) {
auto video = makeRefPtr(descendantVideoElement(targetContainer));
if (!video)
return;
auto& keyboardEvent = downcast<KeyboardEvent>(event);
if (keyboardEvent.keyIdentifier() == "U+0020") { // space
if (video->paused()) {
if (video->canPlay())
video->play();
} else
video->pause();
keyboardEvent.setDefaultHandled();
}
}
}
void MediaDocument::mediaElementSawUnsupportedTracks()
{
// The HTMLMediaElement was told it has something that the underlying
// MediaPlayer cannot handle so we should switch from <video> to <embed>
// and let the plugin handle this. Don't do it immediately as this
// function may be called directly from a media engine callback, and
// replaceChild will destroy the element, media player, and media engine.
m_replaceMediaElementTimer.startOneShot(0_s);
}
void MediaDocument::replaceMediaElementTimerFired()
{
auto htmlBody = makeRefPtr(bodyOrFrameset());
if (!htmlBody)
return;
// Set body margin width and height to 0 as that is what a PluginDocument uses.
htmlBody->setAttributeWithoutSynchronization(marginwidthAttr, AtomicString("0", AtomicString::ConstructFromLiteral));
htmlBody->setAttributeWithoutSynchronization(marginheightAttr, AtomicString("0", AtomicString::ConstructFromLiteral));
if (auto videoElement = makeRefPtr(descendantVideoElement(*htmlBody))) {
auto embedElement = HTMLEmbedElement::create(*this);
embedElement->setAttributeWithoutSynchronization(widthAttr, AtomicString("100%", AtomicString::ConstructFromLiteral));
embedElement->setAttributeWithoutSynchronization(heightAttr, AtomicString("100%", AtomicString::ConstructFromLiteral));
embedElement->setAttributeWithoutSynchronization(nameAttr, AtomicString("plugin", AtomicString::ConstructFromLiteral));
embedElement->setAttributeWithoutSynchronization(srcAttr, url().string());
ASSERT(loader());
if (auto loader = makeRefPtr(this->loader()))
embedElement->setAttributeWithoutSynchronization(typeAttr, loader->writer().mimeType());
videoElement->parentNode()->replaceChild(embedElement, *videoElement);
}
}
void MediaDocument::mediaElementNaturalSizeChanged(const IntSize& newSize)
{
if (ownerElement())
return;
if (newSize.isZero())
return;
if (page())
page()->chrome().client().imageOrMediaDocumentSizeChanged(newSize);
}
}
#endif