Media Remoting: Add interstitial elements to media element shadow dom.

third_party/WebKit/Source/core/html/shadow/MediaRemotingInterstitial.cpp

+// Copyright 2017 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 "core/html/shadow/MediaRemotingInterstitial.h"
+
+#include "core/html/HTMLVideoElement.h"
+#include "core/html/shadow/MediaRemotingElements.h"
+
+namespace blink {
+
+MediaRemotingInterstitialElements::MediaRemotingInterstitialElements(
+    MediaRemotingInterstitial& interstitial)
+    : HTMLDivElement(interstitial.document()), m_interstitial(interstitial) {
+  setShadowPseudoId(
+      AtomicString("-internal-media-remoting-interstitial-elements"));
+  m_mediaRemotingDisableButton = new MediaRemotingDisableButtonElement(*this);
+  m_MediaRemotingCastIcon = new MediaRemotingCastIconElement(*this);
+  appendChild(m_MediaRemotingCastIcon);

[mlamouri (slow - plz ping), 2017/04/10 13:44:22]

deprecated-style-nit: it's m_mediaRemotingCastIcon. Though, since today, it's
media_remoting_cast_icon_ so it doesn't matter :)

[xjz, 2017/04/11 04:29:44]

Done.

+  appendChild(m_mediaRemotingDisableButton);
+}
+
+void MediaRemotingInterstitialElements::onShown() {
+  m_mediaRemotingDisableButton->onShown();
+}
+
+void MediaRemotingInterstitialElements::onHidden() {
+  m_mediaRemotingDisableButton->onHidden();
+}
+
+HTMLVideoElement& MediaRemotingInterstitialElements::videoElement() const {
+  return m_interstitial->videoElement();
+}
+
+DEFINE_TRACE(MediaRemotingInterstitialElements) {
+  visitor->trace(m_interstitial);
+  visitor->trace(m_mediaRemotingDisableButton);
+  visitor->trace(m_MediaRemotingCastIcon);
+  HTMLDivElement::trace(visitor);
+}
+
+MediaRemotingInterstitial::MediaRemotingInterstitial(
+    HTMLVideoElement& videoElement)
+    : HTMLDivElement(videoElement.document()), m_videoElement(&videoElement) {
+  setShadowPseudoId(AtomicString("-internal-media-remoting-interstitial"));
+  m_interstitialElements = new MediaRemotingInterstitialElements(*this);
+  m_mediaRemotingBackgroundImage =
+      new MediaRemotingBackgroundImageElement(*this);
+  appendChild(m_mediaRemotingBackgroundImage);
+  appendChild(m_interstitialElements);
+}
+
+void MediaRemotingInterstitial::show() {
+  removeInlineStyleProperty(CSSPropertyDisplay);
+  m_shown = true;
+  m_interstitialElements->onShown();
+}
+
+void MediaRemotingInterstitial::hide() {
+  setInlineStyleProperty(CSSPropertyDisplay, CSSValueNone);
+  m_shown = false;
+  m_interstitialElements->onHidden();
+}
+
+void MediaRemotingInterstitial::onPosterImageChanged() {
+  if (m_mediaRemotingBackgroundImage)

[mlamouri (slow - plz ping), 2017/04/10 13:44:22]

The null-check sounds useless given that the object has the lifetime of `this`.

[xjz, 2017/04/11 04:29:44]

Removed.

+    m_mediaRemotingBackgroundImage->onPosterImageChanged();
+}
+
+DEFINE_TRACE(MediaRemotingInterstitial) {
+  visitor->trace(m_videoElement);
+  visitor->trace(m_interstitialElements);
+  visitor->trace(m_mediaRemotingBackgroundImage);
+  HTMLDivElement::trace(visitor);
+}
+
+}  // namespace blink