Media Controls: move volume slider to modules/.

third_party/WebKit/Source/modules/media_controls/elements/MediaControlVolumeSliderElement.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/MediaControlVolumeSliderElement.h"
+
+#include "core/HTMLNames.h"
+#include "core/InputTypeNames.h"
+#include "core/events/Event.h"
+#include "core/html/HTMLMediaElement.h"
+#include "core/layout/LayoutObject.h"
+#include "modules/media_controls/MediaControlsImpl.h"
+#include "modules/media_controls/elements/MediaControlElementsHelper.h"
+#include "public/platform/Platform.h"
+
+namespace blink {
+
+MediaControlVolumeSliderElement::MediaControlVolumeSliderElement(
+    MediaControlsImpl& media_controls)
+    : MediaControlInputElement(media_controls, kMediaVolumeSlider) {
+  EnsureUserAgentShadowRoot();
+  setType(InputTypeNames::range);
+  setAttribute(HTMLNames::stepAttr, "any");
+  setAttribute(HTMLNames::maxAttr, "1");
+  SetShadowPseudoId(AtomicString("-webkit-media-controls-volume-slider"));
+}
+
+void MediaControlVolumeSliderElement::DefaultEventHandler(Event* event) {
+  if (!isConnected() || !GetDocument().IsActive())
+    return;
+
+  MediaControlInputElement::DefaultEventHandler(event);
+
+  if (event->type() == EventTypeNames::mousedown) {
+    Platform::Current()->RecordAction(
+        UserMetricsAction("Media.Controls.VolumeChangeBegin"));
+  }
+
+  if (event->type() == EventTypeNames::mouseup) {
+    Platform::Current()->RecordAction(
+        UserMetricsAction("Media.Controls.VolumeChangeEnd"));
+  }
+
+  if (event->type() == EventTypeNames::input) {
+    double volume = value().ToDouble();
+    MediaElement().setVolume(volume);
+    MediaElement().setMuted(false);
+    if (LayoutObject* layout_object = this->GetLayoutObject())
+      layout_object->SetShouldDoFullPaintInvalidation();
+  }
+}
+
+void MediaControlVolumeSliderElement::SetVolume(double volume) {
+  if (value().ToDouble() == volume)
+    return;
+
+  setValue(String::Number(volume));
+  if (LayoutObject* layout_object = this->GetLayoutObject())
+    layout_object->SetShouldDoFullPaintInvalidation();
+}
+
+bool MediaControlVolumeSliderElement::WillRespondToMouseMoveEvents() {
+  if (!isConnected() || !GetDocument().IsActive())
+    return false;
+
+  return MediaControlInputElement::WillRespondToMouseMoveEvents();
+}
+
+bool MediaControlVolumeSliderElement::WillRespondToMouseClickEvents() {
+  if (!isConnected() || !GetDocument().IsActive())
+    return false;
+
+  return MediaControlInputElement::WillRespondToMouseClickEvents();
+}
+
+bool MediaControlVolumeSliderElement::KeepEventInNode(Event* event) {
+  return MediaControlElementsHelper::IsUserInteractionEventForSlider(
+      event, GetLayoutObject());
+}
+
+}  // namespace blink