Media Controls: move simple buttons to modules/.

third_party/WebKit/Source/modules/media_controls/elements/MediaControlToggleClosedCaptionsButtonElement.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 "modules/media_controls/elements/MediaControlToggleClosedCaptionsButtonElement.h"
+
+#include "core/InputTypeNames.h"
+#include "core/events/Event.h"
+#include "core/html/HTMLMediaElement.h"
+#include "core/html/track/TextTrackList.h"
+#include "modules/media_controls/MediaControlsImpl.h"
+
+namespace blink {
+
+MediaControlToggleClosedCaptionsButtonElement::
+    MediaControlToggleClosedCaptionsButtonElement(
+        MediaControlsImpl& media_controls)
+    : MediaControlInputElement(media_controls, kMediaShowClosedCaptionsButton) {
+  EnsureUserAgentShadowRoot();
+  setType(InputTypeNames::button);
+  SetShadowPseudoId(
+      AtomicString("-webkit-media-controls-toggle-closed-captions-button"));
+}
+
+bool MediaControlToggleClosedCaptionsButtonElement::
+    WillRespondToMouseClickEvents() {
+  return true;
+}
+
+void MediaControlToggleClosedCaptionsButtonElement::UpdateDisplayType() {
+  bool captions_visible = MediaElement().TextTracksVisible();
+  SetDisplayType(captions_visible ? kMediaHideClosedCaptionsButton
+                                  : kMediaShowClosedCaptionsButton);
+}
+
+WebLocalizedString::Name
+MediaControlToggleClosedCaptionsButtonElement::GetOverflowStringName() {
+  return WebLocalizedString::kOverflowMenuCaptions;
+}
+
+bool MediaControlToggleClosedCaptionsButtonElement::HasOverflowButton() {
+  return true;
+}
+
+void MediaControlToggleClosedCaptionsButtonElement::DefaultEventHandler(
+    Event* event) {
+  if (event->type() == EventTypeNames::click) {
+    if (MediaElement().textTracks()->length() == 1) {
+      // If only one track exists, toggle it on/off
+      if (MediaElement().textTracks()->HasShowingTracks()) {
+        static_cast<MediaControlsImpl&>(GetMediaControls())
+            .DisableShowingTextTracks();
+      } else {
+        static_cast<MediaControlsImpl&>(GetMediaControls())
+            .ShowTextTrackAtIndex(0);
+      }
+    } else {
+      static_cast<MediaControlsImpl&>(GetMediaControls()).ToggleTextTrackList();
+    }
+
+    UpdateDisplayType();
+    event->SetDefaultHandled();
+  }
+
+  MediaControlInputElement::DefaultEventHandler(event);
+}
+
+}  // namespace blink