Media Controls: move all MediaControlDivElement sub-classes to modules/.

third_party/WebKit/Source/modules/media_controls/elements/MediaControlPanelElement.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/MediaControlPanelElement.h"
+
+#include "core/dom/TaskRunnerHelper.h"
+#include "core/events/Event.h"
+#include "core/html/HTMLMediaElement.h"
+#include "modules/media_controls/MediaControlsImpl.h"
+#include "modules/media_controls/elements/MediaControlElementsHelper.h"
+
+namespace blink {
+
+namespace {
+
+// This is matching the `transition` property from mediaControls.css
+const double kFadeOutDuration = 0.3;
+
+}  // anonymous namespace
+
+MediaControlPanelElement::MediaControlPanelElement(
+    MediaControlsImpl& media_controls)
+    : MediaControlDivElement(media_controls, kMediaControlsPanel),
+      transition_timer_(TaskRunnerHelper::Get(TaskType::kUnspecedTimer,
+                                              &media_controls.GetDocument()),
+                        this,
+                        &MediaControlPanelElement::TransitionTimerFired) {
+  SetShadowPseudoId(AtomicString("-webkit-media-controls-panel"));
+}
+
+void MediaControlPanelElement::SetIsDisplayed(bool is_displayed) {
+  if (is_displayed_ == is_displayed)
+    return;
+
+  is_displayed_ = is_displayed;
+  if (is_displayed_ && opaque_)
+    DidBecomeVisible();
+}
+
+bool MediaControlPanelElement::IsOpaque() const {
+  return opaque_;
+}
+
+void MediaControlPanelElement::MakeOpaque() {
+  if (opaque_)
+    return;
+
+  SetInlineStyleProperty(CSSPropertyOpacity, 1.0,
+                         CSSPrimitiveValue::UnitType::kNumber);
+  opaque_ = true;
+
+  if (is_displayed_) {
+    SetIsWanted(true);
+    DidBecomeVisible();
+  }
+}
+
+void MediaControlPanelElement::MakeTransparent() {
+  if (!opaque_)
+    return;
+
+  SetInlineStyleProperty(CSSPropertyOpacity, 0.0,
+                         CSSPrimitiveValue::UnitType::kNumber);
+
+  opaque_ = false;
+  StartTimer();
+}
+
+void MediaControlPanelElement::DefaultEventHandler(Event* event) {
+  // Suppress the media element activation behavior (toggle play/pause) when
+  // any part of the control panel is clicked.
+  if (event->type() == EventTypeNames::click) {
+    event->SetDefaultHandled();
+    return;
+  }
+  HTMLDivElement::DefaultEventHandler(event);
+}
+
+bool MediaControlPanelElement::KeepEventInNode(Event* event) {
+  return MediaControlElementsHelper::IsUserInteractionEvent(event);
+}
+
+void MediaControlPanelElement::StartTimer() {
+  StopTimer();
+
+  // The timer is required to set the property display:'none' on the panel,
+  // such that captions are correctly displayed at the bottom of the video
+  // at the end of the fadeout transition.
+  // FIXME: Racing a transition with a setTimeout like this is wrong.
+  transition_timer_.StartOneShot(kFadeOutDuration, BLINK_FROM_HERE);
+}
+
+void MediaControlPanelElement::StopTimer() {
+  transition_timer_.Stop();
+}
+
+void MediaControlPanelElement::TransitionTimerFired(TimerBase*) {
+  if (!opaque_)
+    SetIsWanted(false);
+
+  StopTimer();
+}
+
+void MediaControlPanelElement::DidBecomeVisible() {
+  DCHECK(is_displayed_ && opaque_);
+  MediaElement().MediaControlsDidBecomeVisible();
+}
+
+}  // namespace blink