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      1 /*
      2  * Copyright (C) 2009 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      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  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 
     30 #ifndef AccessibilityMediaControls_h
     31 #define AccessibilityMediaControls_h
     32 
     33 #if ENABLE(VIDEO)
     34 
     35 #include "AccessibilitySlider.h"
     36 #include "MediaControlElements.h"
     37 
     38 namespace WebCore {
     39 
     40 class AccessibilityMediaControl : public AccessibilityRenderObject {
     41 
     42 public:
     43     static PassRefPtr<AccessibilityObject> create(RenderObject*);
     44     virtual ~AccessibilityMediaControl() { }
     45 
     46     virtual AccessibilityRole roleValue() const;
     47     virtual bool accessibilityIsIgnored() const;
     48 
     49     virtual String title() const;
     50     virtual String accessibilityDescription() const;
     51     virtual String helpText() const;
     52 
     53 protected:
     54     AccessibilityMediaControl(RenderObject*);
     55     MediaControlElementType controlType() const;
     56     String controlTypeName() const;
     57 };
     58 
     59 
     60 class AccessibilityMediaTimeline : public AccessibilitySlider {
     61 
     62 public:
     63     static PassRefPtr<AccessibilityObject> create(RenderObject*);
     64     virtual ~AccessibilityMediaTimeline() { }
     65 
     66     virtual bool isMediaTimeline() const { return true; }
     67 
     68     virtual String helpText() const;
     69     virtual String valueDescription() const;
     70     const AtomicString& getAttribute(const QualifiedName& attribute) const;
     71 
     72 private:
     73     AccessibilityMediaTimeline(RenderObject*);
     74 };
     75 
     76 
     77 class AccessibilityMediaControlsContainer : public AccessibilityMediaControl {
     78 
     79 public:
     80     static PassRefPtr<AccessibilityObject> create(RenderObject*);
     81     virtual ~AccessibilityMediaControlsContainer() { }
     82 
     83     virtual AccessibilityRole roleValue() const { return ToolbarRole; }
     84     virtual bool accessibilityIsIgnored() const { return false; }
     85 
     86     virtual String helpText() const;
     87     virtual String accessibilityDescription() const;
     88 
     89 private:
     90     AccessibilityMediaControlsContainer(RenderObject*);
     91     bool controllingVideoElement() const;
     92     const String elementTypeName() const;
     93 };
     94 
     95 
     96 class AccessibilityMediaTimeDisplay : public AccessibilityMediaControl {
     97 
     98 public:
     99     static PassRefPtr<AccessibilityObject> create(RenderObject*);
    100     virtual ~AccessibilityMediaTimeDisplay() { }
    101 
    102     virtual AccessibilityRole roleValue() const { return StaticTextRole; }
    103     virtual bool accessibilityIsIgnored() const;
    104 
    105     virtual String stringValue() const;
    106     virtual String accessibilityDescription() const;
    107 
    108 private:
    109     AccessibilityMediaTimeDisplay(RenderObject*);
    110 };
    111 
    112 
    113 } // namespace WebCore
    114 
    115 #endif // ENABLE(VIDEO)
    116 
    117 #endif // AccessibilityMediaControls_h
    118