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      1 /*
      2  * Copyright (C) 2011 Apple Inc. All rights reserved.
      3  * Copyright (C) 2011 Google Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #ifndef MediaControls_h
     28 #define MediaControls_h
     29 
     30 #if ENABLE(VIDEO)
     31 
     32 #include "HTMLDivElement.h"
     33 
     34 namespace WebCore {
     35 
     36 class HTMLMediaElement;
     37 
     38 class MediaControls : public HTMLDivElement {
     39   public:
     40     virtual ~MediaControls() {}
     41 
     42     // This function is to be implemented in your port-specific media
     43     // controls implementation.
     44     static PassRefPtr<MediaControls> create(HTMLMediaElement*);
     45 
     46     virtual void show() = 0;
     47     virtual void hide() = 0;
     48     virtual void makeOpaque() = 0;
     49     virtual void makeTransparent() = 0;
     50 
     51     virtual void reset() = 0;
     52 
     53     virtual void playbackProgressed() = 0;
     54     virtual void playbackStarted() = 0;
     55     virtual void playbackStopped() = 0;
     56 
     57     virtual void changedMute() = 0;
     58     virtual void changedVolume() = 0;
     59 
     60     virtual void enteredFullscreen() = 0;
     61     virtual void exitedFullscreen() = 0;
     62 
     63     virtual void reportedError() = 0;
     64     virtual void changedNetworkState() = 0;
     65     virtual void loadedMetadata() = 0;
     66     virtual void changedClosedCaptionsVisibility() = 0;
     67 
     68     virtual void showVolumeSlider() = 0;
     69     virtual void updateTimeDisplay() = 0;
     70 
     71 protected:
     72     MediaControls(HTMLMediaElement*);
     73 
     74 private:
     75     MediaControls();
     76 
     77     virtual bool isMediaControls() const { return true; }
     78 };
     79 
     80 inline MediaControls* toMediaControls(Node* node)
     81 {
     82     ASSERT(!node || node->isMediaControls());
     83     return static_cast<MediaControls*>(node);
     84 }
     85 
     86 // This will catch anyone doing an unneccessary cast.
     87 void toMediaControls(const Node*);
     88 
     89 }
     90 
     91 #endif
     92 
     93 #endif
     94