Add a download button to the media player

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 102 matching lines @@
     , m_timeline(nullptr)
     , m_currentTimeDisplay(nullptr)
     , m_durationDisplay(nullptr)
     , m_muteButton(nullptr)
     , m_volumeSlider(nullptr)
     , m_toggleClosedCaptionsButton(nullptr)
     , m_textTrackList(nullptr)
     , m_overflowList(nullptr)
     , m_castButton(nullptr)
     , m_fullscreenButton(nullptr)
+    , m_downloadButton(nullptr)
     , m_hideMediaControlsTimer(this, &MediaControls::hideMediaControlsTimerFired)
     , m_hideTimerBehaviorFlags(IgnoreNone)
     , m_isMouseOverControls(false)
     , m_isPausedForScrubbing(false)
     , m_panelWidthChangedTimer(this, &MediaControls::panelWidthChangedTimerFired)
     , m_panelWidth(0)
     , m_allowHiddenVolumeControls(RuntimeEnabledFeatures::newMediaPlaybackUiEnabled())
 {
 }
 
@@ skipping 94 matching lines @@
     panel->appendChild(toggleClosedCaptionsButton);
 
     MediaControlCastButtonElement* castButton = MediaControlCastButtonElement::create(*this, false);
     m_castButton = castButton;
     panel->appendChild(castButton);
 
     MediaControlFullscreenButtonElement* fullscreenButton = MediaControlFullscreenButtonElement::create(*this);
     m_fullscreenButton = fullscreenButton;
     panel->appendChild(fullscreenButton);
 
+    MediaControlDownloadButtonElement* downloadButton = MediaControlDownloadButtonElement::create(*this, &document());
+    m_downloadButton = downloadButton;
+    panel->appendChild(downloadButton);
+
     m_panel = panel;
     enclosure->appendChild(panel);
 
     m_enclosure = enclosure;
     appendChild(enclosure);
 
     MediaControlTextTrackListElement* textTrackList = MediaControlTextTrackListElement::create(*this);
     m_textTrackList = textTrackList;
     appendChild(textTrackList);
 
     MediaControlOverflowMenuButtonElement* overflowMenu = MediaControlOverflowMenuButtonElement::create(*this);
     m_overflowMenu = overflowMenu;
     panel->appendChild(overflowMenu);
 
     MediaControlOverflowMenuListElement* overflowList = MediaControlOverflowMenuListElement::create(*this);
     m_overflowList = overflowList;
     appendChild(overflowList);
 
     // The order in which we append elements to the overflow list does matter.
     m_overflowList->appendChild(m_muteButton->createOverflowElement(*this, MediaControlMuteButtonElement::create(*this)));
     m_overflowList->appendChild(m_castButton->createOverflowElement(*this, MediaControlCastButtonElement::create(*this, false)));
     m_overflowList->appendChild(m_toggleClosedCaptionsButton->createOverflowElement(*this, MediaControlToggleClosedCaptionsButtonElement::create(*this)));
     m_overflowList->appendChild(m_fullscreenButton->createOverflowElement(*this, MediaControlFullscreenButtonElement::create(*this)));
     m_overflowList->appendChild(m_playButton->createOverflowElement(*this, MediaControlPlayButtonElement::create(*this)));
+    m_overflowList->appendChild(m_downloadButton->createOverflowElement(*this, MediaControlDownloadButtonElement::create(*this, &document())));
 }
 
 void MediaControls::reset()
 {
     EventDispatchForbiddenScope::AllowUserAgentEvents allowEventsInShadow;
     const bool useNewUi = RuntimeEnabledFeatures::newMediaPlaybackUiEnabled();
     BatchedControlUpdate batch(this);
 
     m_allowHiddenVolumeControls = useNewUi;
 
@@ skipping 22 matching lines @@
     m_timeline->setDuration(duration);
     m_timeline->setPosition(mediaElement().currentTime());
 
     updateVolume();
 
     refreshClosedCaptionsButtonVisibility();
 
     m_fullscreenButton->setIsWanted(shouldShowFullscreenButton(mediaElement()));
 
     refreshCastButtonVisibilityWithoutUpdate();
+
+    if (RuntimeEnabledFeatures::mediaControlsDownloadButtonEnabled())
+        m_downloadButton->setIsWanted(m_downloadButton->shouldDisplayDownloadButton());
 }
 
 LayoutObject* MediaControls::layoutObjectForTextTrackLayout()
 {
     return m_panel->layoutObject();
 }
 
 void MediaControls::show()
 {
     makeOpaque();
@@ skipping 387 matching lines @@
     // won't benefit from that anwyay, we just do it here like JS will.
 
     if (!RuntimeEnabledFeatures::newMediaPlaybackUiEnabled())
         return;
 
     // Controls that we'll hide / show, in order of decreasing priority.
     MediaControlElement* elements[] = {
         // Exclude m_overflowMenu; we handle it specially.
         m_playButton.get(),
         m_fullscreenButton.get(),
+        m_downloadButton.get(),
         m_toggleClosedCaptionsButton.get(),
         m_timeline.get(),
         m_currentTimeDisplay.get(),
         m_volumeSlider.get(),
         m_castButton.get(),
         m_muteButton.get(),
         m_durationDisplay.get(),
     };
 
     int usedWidth = 0;
@@ skipping 97 matching lines @@
     if (LayoutObject* layoutObject = element->layoutObject())
         layoutObject->setShouldDoFullPaintInvalidation();
 }
 
 void MediaControls::networkStateChanged()
 {
     invalidate(m_playButton);
     invalidate(m_overlayPlayButton);
     invalidate(m_muteButton);
     invalidate(m_fullscreenButton);
+    invalidate(m_downloadButton);
     invalidate(m_timeline);
     invalidate(m_volumeSlider);
 }
 
 bool MediaControls::overflowMenuVisible()
 {
     return m_overflowList->isWanted();
 }
 
 void MediaControls::toggleOverflowMenu()
 {
     m_overflowList->setIsWanted(!m_overflowList->isWanted());
 }
 
 DEFINE_TRACE(MediaControls)
 {
     visitor->trace(m_mediaElement);
     visitor->trace(m_panel);
     visitor->trace(m_overlayPlayButton);
     visitor->trace(m_overlayEnclosure);
     visitor->trace(m_playButton);
     visitor->trace(m_currentTimeDisplay);
     visitor->trace(m_timeline);
     visitor->trace(m_muteButton);
     visitor->trace(m_volumeSlider);
     visitor->trace(m_toggleClosedCaptionsButton);
     visitor->trace(m_fullscreenButton);
+    visitor->trace(m_downloadButton);
     visitor->trace(m_durationDisplay);
     visitor->trace(m_enclosure);
     visitor->trace(m_textTrackList);
     visitor->trace(m_overflowMenu);
     visitor->trace(m_overflowList);
     visitor->trace(m_castButton);
     visitor->trace(m_overlayCastButton);
     HTMLDivElement::trace(visitor);
 }
 
 } // namespace blink