Media Controls: handle 'timeupdate', 'play' and 'pause' via an EventListener.

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

 /*
  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011, 2012 Google 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
@@ skipping 401 matching lines @@
     return false;
   }
 
   // Don't hide the media controls when a panel is showing.
   if (m_textTrackList->isWanted() || m_overflowList->isWanted())
     return false;
 
   return true;
 }
 
-void MediaControls::playbackStarted() {
-  BatchedControlUpdate batch(this);
-  updatePlayState();
-  m_timeline->setPosition(mediaElement().currentTime());
-  updateCurrentTimeDisplay();
-
-  startHideMediaControlsTimer();
-}
-
-void MediaControls::playbackProgressed() {
-  m_timeline->setPosition(mediaElement().currentTime());
-  updateCurrentTimeDisplay();
-
-  if (isVisible() && shouldHideMediaControls())
-    makeTransparent();
-}
-
-void MediaControls::playbackStopped() {
-  updatePlayState();
-  m_timeline->setPosition(mediaElement().currentTime());
-  updateCurrentTimeDisplay();
-  makeOpaque();
-
-  stopHideMediaControlsTimer();
-}
-
 void MediaControls::updatePlayState() {
   if (m_isPausedForScrubbing)
     return;
 
   if (m_overlayPlayButton)
     m_overlayPlayButton->updateDisplayType();
   m_playButton->updateDisplayType();
 }
 
 void MediaControls::beginScrubbing() {
@@ skipping 253 matching lines @@
 }
 
 void MediaControls::onFocusIn() {
   if (!mediaElement().shouldShowControls())
     return;
 
   show();
   resetHideMediaControlsTimer();
 }
 
+void MediaControls::onTimeUpdate() {
+  m_timeline->setPosition(mediaElement().currentTime());
+  updateCurrentTimeDisplay();
+
+  // 'timeupdate' might be called in a paused state. The controls should not
+  // become transparent in that case.
+  if (mediaElement().paused()) {
+    makeOpaque();
+    return;
+  }
+
+  if (isVisible() && shouldHideMediaControls())
+    makeTransparent();
+}
+
+void MediaControls::onPlay() {
+  updatePlayState();
+  m_timeline->setPosition(mediaElement().currentTime());
+  updateCurrentTimeDisplay();
+
+  startHideMediaControlsTimer();
+}
+
+void MediaControls::onPause() {
+  updatePlayState();
+  m_timeline->setPosition(mediaElement().currentTime());
+  updateCurrentTimeDisplay();
+  makeOpaque();
+
+  stopHideMediaControlsTimer();
+}
+
 void MediaControls::notifyPanelWidthChanged(const LayoutUnit& newWidth) {
   // Don't bother to do any work if this matches the most recent panel
   // width, since we're called after layout.
   // Note that this code permits a bad frame on resize, since it is
   // run after the relayout / paint happens.  It would be great to improve
   // this, but it would be even greater to move this code entirely to
   // JS and fix it there.
   m_panelWidth = newWidth.toInt();
 
   // Adjust for effective zoom.
@@ skipping 177 matching lines @@
   visitor->trace(m_overflowMenu);
   visitor->trace(m_overflowList);
   visitor->trace(m_castButton);
   visitor->trace(m_overlayCastButton);
   visitor->trace(m_mediaEventListener);
   visitor->trace(m_windowEventListener);
   HTMLDivElement::trace(visitor);
 }
 
 }  // namespace blink