gecko-dev/dom/html/VideoDocument.cpp

155 строки
4.9 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MediaDocument.h"
#include "nsGkAtoms.h"
#include "nsNodeInfoManager.h"
#include "nsContentCreatorFunctions.h"
#include "mozilla/dom/HTMLMediaElement.h"
#include "nsIDocumentInlines.h"
#include "nsContentUtils.h"
#include "mozilla/dom/Element.h"
namespace mozilla {
namespace dom {
class VideoDocument final : public MediaDocument
{
public:
virtual nsresult StartDocumentLoad(const char* aCommand,
nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
nsISupports* aContainer,
nsIStreamListener** aDocListener,
bool aReset = true,
nsIContentSink* aSink = nullptr);
virtual void SetScriptGlobalObject(nsIScriptGlobalObject* aScriptGlobalObject);
protected:
// Sets document <title> to reflect the file name and description.
void UpdateTitle(nsIChannel* aChannel);
nsresult CreateSyntheticVideoDocument(nsIChannel* aChannel,
nsIStreamListener** aListener);
nsRefPtr<MediaDocumentStreamListener> mStreamListener;
};
nsresult
VideoDocument::StartDocumentLoad(const char* aCommand,
nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
nsISupports* aContainer,
nsIStreamListener** aDocListener,
bool aReset,
nsIContentSink* aSink)
{
nsresult rv =
MediaDocument::StartDocumentLoad(aCommand, aChannel, aLoadGroup, aContainer,
aDocListener, aReset, aSink);
NS_ENSURE_SUCCESS(rv, rv);
mStreamListener = new MediaDocumentStreamListener(this);
// Create synthetic document
rv = CreateSyntheticVideoDocument(aChannel,
getter_AddRefs(mStreamListener->mNextStream));
NS_ENSURE_SUCCESS(rv, rv);
NS_ADDREF(*aDocListener = mStreamListener);
return rv;
}
void
VideoDocument::SetScriptGlobalObject(nsIScriptGlobalObject* aScriptGlobalObject)
{
// Set the script global object on the superclass before doing
// anything that might require it....
MediaDocument::SetScriptGlobalObject(aScriptGlobalObject);
if (aScriptGlobalObject) {
if (!nsContentUtils::IsChildOfSameType(this) &&
GetReadyStateEnum() != nsIDocument::READYSTATE_COMPLETE) {
LinkStylesheet(NS_LITERAL_STRING("resource://gre/res/TopLevelVideoDocument.css"));
LinkStylesheet(NS_LITERAL_STRING("chrome://global/skin/media/TopLevelVideoDocument.css"));
}
BecomeInteractive();
}
}
nsresult
VideoDocument::CreateSyntheticVideoDocument(nsIChannel* aChannel,
nsIStreamListener** aListener)
{
// make our generic document
nsresult rv = MediaDocument::CreateSyntheticDocument();
NS_ENSURE_SUCCESS(rv, rv);
Element* body = GetBodyElement();
if (!body) {
NS_WARNING("no body on video document!");
return NS_ERROR_FAILURE;
}
// make content
nsRefPtr<mozilla::dom::NodeInfo> nodeInfo;
nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::video, nullptr,
kNameSpaceID_XHTML,
nsIDOMNode::ELEMENT_NODE);
nsRefPtr<HTMLMediaElement> element =
static_cast<HTMLMediaElement*>(NS_NewHTMLVideoElement(nodeInfo.forget(),
NOT_FROM_PARSER));
if (!element)
return NS_ERROR_OUT_OF_MEMORY;
element->SetAutoplay(true);
element->SetControls(true);
element->LoadWithChannel(aChannel, aListener);
UpdateTitle(aChannel);
if (nsContentUtils::IsChildOfSameType(this)) {
// Video documents that aren't toplevel should fill their frames and
// not have margins
element->SetAttr(kNameSpaceID_None, nsGkAtoms::style,
NS_LITERAL_STRING("position:absolute; top:0; left:0; width:100%; height:100%"),
true);
}
return body->AppendChildTo(element, false);
}
void
VideoDocument::UpdateTitle(nsIChannel* aChannel)
{
if (!aChannel)
return;
nsAutoString fileName;
GetFileName(fileName, aChannel);
SetTitle(fileName);
}
} // namespace dom
} // namespace mozilla
nsresult
NS_NewVideoDocument(nsIDocument** aResult)
{
mozilla::dom::VideoDocument* doc = new mozilla::dom::VideoDocument();
NS_ADDREF(doc);
nsresult rv = doc->Init();
if (NS_FAILED(rv)) {
NS_RELEASE(doc);
}
*aResult = doc;
return rv;
}