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// Copyright 2021 The Chromium Authors
// 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/xr/xr_exit_fullscreen_observer.h"
#include <utility>
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/frame/viewport_data.h"
#include "third_party/blink/renderer/core/fullscreen/fullscreen.h"
namespace blink {
XrExitFullscreenObserver::XrExitFullscreenObserver() {
DVLOG(2) << __func__;
}
XrExitFullscreenObserver::~XrExitFullscreenObserver() = default;
void XrExitFullscreenObserver::Invoke(ExecutionContext* execution_context,
Event* event) {
DVLOG(2) << __func__ << ": event type=" << event->type();
document_->removeEventListener(event_type_names::kFullscreenchange, this,
true);
if (event->type() == event_type_names::kFullscreenchange) {
// Succeeded, proceed with session shutdown. Expanding into the fullscreen
// cutout is only valid for fullscreen mode which we just exited (cf.
// MediaControlsDisplayCutoutDelegate::DidExitFullscreen), so we can
// unconditionally turn this off here.
document_->GetViewportData().SetExpandIntoDisplayCutout(false);
std::move(on_exited_).Run();
}
}
void XrExitFullscreenObserver::ExitFullscreen(Document* document,
base::OnceClosure on_exited) {
DVLOG(2) << __func__;
document_ = document;
on_exited_ = std::move(on_exited);
document->addEventListener(event_type_names::kFullscreenchange, this, true);
// "ua_originated" means that the browser process already exited
// fullscreen. Set it to false because we need the browser process
// to get notified that it needs to exit fullscreen. Use
// FullyExitFullscreen to ensure that we return to non-fullscreen mode.
// ExitFullscreen only unfullscreens a single element, potentially
// leaving others in fullscreen mode.
constexpr bool kUaOriginated = false;
Fullscreen::FullyExitFullscreen(*document, kUaOriginated);
}
void XrExitFullscreenObserver::Trace(Visitor* visitor) const {
visitor->Trace(document_);
NativeEventListener::Trace(visitor);
}
} // namespace blink
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