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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_controller_impl.h"
#include "third_party/blink/public/platform/web_media_player.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/dom/events/event.h"
#include "third_party/blink/renderer/core/events/picture_in_picture_control_event.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/html/media/html_video_element.h"
#include "third_party/blink/renderer/modules/picture_in_picture/enter_picture_in_picture_event.h"
#include "third_party/blink/renderer/modules/picture_in_picture/picture_in_picture_window.h"
#include "third_party/blink/renderer/platform/feature_policy/feature_policy.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
namespace blink {
PictureInPictureControllerImpl::~PictureInPictureControllerImpl() = default;
// static
PictureInPictureControllerImpl* PictureInPictureControllerImpl::Create(
Document& document) {
return new PictureInPictureControllerImpl(document);
}
// static
PictureInPictureControllerImpl& PictureInPictureControllerImpl::From(
Document& document) {
return static_cast<PictureInPictureControllerImpl&>(
PictureInPictureController::From(document));
}
bool PictureInPictureControllerImpl::PictureInPictureEnabled() const {
return IsDocumentAllowed() == Status::kEnabled;
}
PictureInPictureController::Status
PictureInPictureControllerImpl::IsDocumentAllowed() const {
DCHECK(GetSupplementable());
// If document has been detached from a frame, return kFrameDetached status.
LocalFrame* frame = GetSupplementable()->GetFrame();
if (!frame)
return Status::kFrameDetached;
// `GetPictureInPictureEnabled()` returns false when the embedder or the
// system forbids the page from using Picture-in-Picture.
DCHECK(GetSupplementable()->GetSettings());
if (!GetSupplementable()->GetSettings()->GetPictureInPictureEnabled())
return Status::kDisabledBySystem;
// If document is not allowed to use the policy-controlled feature named
// "picture-in-picture", return kDisabledByFeaturePolicy status.
if (RuntimeEnabledFeatures::PictureInPictureAPIEnabled() &&
!frame->IsFeatureEnabled(
blink::mojom::FeaturePolicyFeature::kPictureInPicture)) {
return Status::kDisabledByFeaturePolicy;
}
return Status::kEnabled;
}
PictureInPictureController::Status
PictureInPictureControllerImpl::IsElementAllowed(
const HTMLVideoElement& element) const {
PictureInPictureController::Status status = IsDocumentAllowed();
if (status != Status::kEnabled)
return status;
if (element.getReadyState() == HTMLMediaElement::kHaveNothing)
return Status::kMetadataNotLoaded;
if (!element.HasVideo())
return Status::kVideoTrackNotAvailable;
if (element.FastHasAttribute(HTMLNames::disablepictureinpictureAttr))
return Status::kDisabledByAttribute;
// TODO(crbug.com/806249): Remove this when MediaStreams are supported.
if (element.GetLoadType() == WebMediaPlayer::kLoadTypeMediaStream)
return Status::kMediaStreamsNotSupportedYet;
return Status::kEnabled;
}
void PictureInPictureControllerImpl::EnterPictureInPicture(
HTMLVideoElement* element,
ScriptPromiseResolver* resolver) {
if (picture_in_picture_element_ != element) {
element->enterPictureInPicture(
WTF::Bind(&PictureInPictureControllerImpl::OnEnteredPictureInPicture,
WrapPersistent(this), WrapPersistent(element),
WrapPersistent(resolver)));
// If the media element has already been given custom controls, this will
// ensure that they get set. Otherwise, this will do nothing.
element->SendCustomControlsToPipWindow();
return;
}
if (resolver)
resolver->Resolve(picture_in_picture_window_);
}
void PictureInPictureControllerImpl::OnEnteredPictureInPicture(
HTMLVideoElement* element,
ScriptPromiseResolver* resolver,
const WebSize& picture_in_picture_window_size) {
if (IsElementAllowed(*element) == Status::kDisabledByAttribute) {
if (resolver) {
resolver->Reject(
DOMException::Create(DOMExceptionCode::kInvalidStateError, ""));
}
element->exitPictureInPicture(base::DoNothing());
return;
}
picture_in_picture_element_ = element;
picture_in_picture_element_->OnEnteredPictureInPicture();
// Closes the current Picture-in-Picture window if any.
if (picture_in_picture_window_)
picture_in_picture_window_->OnClose();
picture_in_picture_window_ = new PictureInPictureWindow(
GetSupplementable(), picture_in_picture_window_size);
picture_in_picture_element_->DispatchEvent(
*EnterPictureInPictureEvent::Create(
EventTypeNames::enterpictureinpicture,
WrapPersistent(picture_in_picture_window_.Get())));
element->GetWebMediaPlayer()->RegisterPictureInPictureWindowResizeCallback(
WTF::BindRepeating(&PictureInPictureWindow::OnResize,
WrapPersistent(picture_in_picture_window_.Get())));
if (resolver)
resolver->Resolve(picture_in_picture_window_);
}
void PictureInPictureControllerImpl::ExitPictureInPicture(
HTMLVideoElement* element,
ScriptPromiseResolver* resolver) {
element->exitPictureInPicture(
WTF::Bind(&PictureInPictureControllerImpl::OnExitedPictureInPicture,
WrapPersistent(this), WrapPersistent(resolver)));
}
void PictureInPictureControllerImpl::SetPictureInPictureCustomControls(
HTMLVideoElement* element,
const std::vector<PictureInPictureControlInfo>& controls) {
element->SetPictureInPictureCustomControls(controls);
if (IsPictureInPictureElement(element))
element->SendCustomControlsToPipWindow();
}
void PictureInPictureControllerImpl::OnExitedPictureInPicture(
ScriptPromiseResolver* resolver) {
DCHECK(GetSupplementable());
// Bail out if document is not active.
if (!GetSupplementable()->IsActive())
return;
if (picture_in_picture_window_)
picture_in_picture_window_->OnClose();
if (picture_in_picture_element_) {
HTMLVideoElement* element = picture_in_picture_element_;
picture_in_picture_element_ = nullptr;
element->OnExitedPictureInPicture();
element->DispatchEvent(
*Event::CreateBubble(EventTypeNames::leavepictureinpicture));
}
if (resolver)
resolver->Resolve();
}
void PictureInPictureControllerImpl::OnPictureInPictureControlClicked(
const WebString& control_id) {
DCHECK(GetSupplementable());
// Bail out if document is not active.
if (!GetSupplementable()->IsActive())
return;
if (RuntimeEnabledFeatures::PictureInPictureControlEnabled() &&
picture_in_picture_element_) {
picture_in_picture_element_->DispatchEvent(
*PictureInPictureControlEvent::Create(
EventTypeNames::pictureinpicturecontrolclick, control_id));
}
}
Element* PictureInPictureControllerImpl::PictureInPictureElement(
TreeScope& scope) const {
if (!picture_in_picture_element_)
return nullptr;
return scope.AdjustedElement(*picture_in_picture_element_);
}
bool PictureInPictureControllerImpl::IsPictureInPictureElement(
const Element* element) const {
DCHECK(element);
return element == picture_in_picture_element_;
}
void PictureInPictureControllerImpl::Trace(blink::Visitor* visitor) {
visitor->Trace(picture_in_picture_element_);
visitor->Trace(picture_in_picture_window_);
Supplement<Document>::Trace(visitor);
}
PictureInPictureControllerImpl::PictureInPictureControllerImpl(
Document& document)
: PictureInPictureController(document) {}
} // namespace blink
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