New media playback UI.

Source/core/html/shadow/MediaControlElementTypes.h

 /*
  * Copyright (C) 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 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.
@@ skipping 58 matching lines @@
 
 CORE_EXPORT HTMLMediaElement* toParentMediaElement(Node*);
 inline HTMLMediaElement* toParentMediaElement(LayoutObject* layoutObject) { return toParentMediaElement(layoutObject->node()); }
 
 CORE_EXPORT MediaControlElementType mediaControlElementType(Node*);
 
 // ----------------------------
 
 class MediaControlElement : public WillBeGarbageCollectedMixin {
 public:
-    void hide();
-    void show();
+    // These hold the state about whether this control should be shown if
+    // space permits.  These will also show / hide as needed.
+    void setIsWanted(bool);
+    bool isWanted();
+
+    // Tell us whether we fit or not.  This will hide / show the control as
+    // needed, also.
+    void setDoesFit(bool);
+
+    // This returns the minimum width in pixels that we need to show
+    // this control.  Ideally, this would just be shorthand for the computed
+    // style, but this must also work when the control is hidden.
+    int minimumWidth();
 
     MediaControlElementType displayType() { return m_displayType; }
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     MediaControlElement(MediaControls&, MediaControlElementType, HTMLElement*);
 
     MediaControls& mediaControls() const { return m_mediaControls; }
     HTMLMediaElement& mediaElement() const;
 
     void setDisplayType(MediaControlElementType);
 
 private:
+    // Hide or show based on our fits / wanted state.  We want to show
+    // if and only if we're wanted and we fit.
+    void updateShownState();
+
     MediaControls& m_mediaControls;
     MediaControlElementType m_displayType;
     RawPtrWillBeMember<HTMLElement> m_element;
+    bool m_isWanted : 1;
+    bool m_doesFit : 1;
 };
 
 // ----------------------------
 
 class MediaControlDivElement : public HTMLDivElement, public MediaControlElement {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaControlDivElement);
 public:
     DECLARE_VIRTUAL_TRACE();
 
 protected:
@@ skipping 29 matching lines @@
 protected:
     MediaControlTimeDisplayElement(MediaControls&, MediaControlElementType);
 
 private:
     double m_currentValue;
 };
 
 } // namespace blink
 
 #endif // MediaControlElementTypes_h