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      1 /*
      2  * Copyright (C) 2013 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  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "core/html/HTMLElement.h"
     27 
     28 namespace WebCore {
     29 
     30 enum WebVTTNodeType {
     31     WebVTTNodeTypeNone = 0,
     32     WebVTTNodeTypeClass,
     33     WebVTTNodeTypeItalic,
     34     WebVTTNodeTypeLanguage,
     35     WebVTTNodeTypeBold,
     36     WebVTTNodeTypeUnderline,
     37     WebVTTNodeTypeRuby,
     38     WebVTTNodeTypeRubyText,
     39     WebVTTNodeTypeVoice
     40 };
     41 
     42 class WebVTTElement FINAL : public Element {
     43 public:
     44     static PassRefPtr<WebVTTElement> create(const WebVTTNodeType, Document*);
     45     static PassRefPtr<WebVTTElement> create(const QualifiedName&, Document*);
     46     PassRefPtr<HTMLElement> createEquivalentHTMLElement(Document*);
     47 
     48     virtual PassRefPtr<Element> cloneElementWithoutAttributesAndChildren() OVERRIDE;
     49 
     50     void setWebVTTNodeType(WebVTTNodeType type) { m_webVTTNodeType = static_cast<unsigned>(type); }
     51     WebVTTNodeType webVTTNodeType() const { return static_cast<WebVTTNodeType>(m_webVTTNodeType); }
     52 
     53     bool isPastNode() const { return m_isPastNode; }
     54     void setIsPastNode(bool value) { m_isPastNode = value; }
     55 
     56     virtual bool isWebVTTElement() const OVERRIDE { return true; }
     57     AtomicString language() const { return m_language; }
     58     void setLanguage(AtomicString value) { m_language = value; }
     59 
     60     static const QualifiedName& voiceAttributeName()
     61     {
     62         DEFINE_STATIC_LOCAL(QualifiedName, voiceAttr, (nullAtom, "voice", nullAtom));
     63         return voiceAttr;
     64     }
     65 
     66     static const QualifiedName& langAttributeName()
     67     {
     68         DEFINE_STATIC_LOCAL(QualifiedName, voiceAttr, (nullAtom, "lang", nullAtom));
     69         return voiceAttr;
     70     }
     71 
     72 private:
     73     WebVTTElement(const QualifiedName&, Document*);
     74     WebVTTElement(WebVTTNodeType, Document*);
     75 
     76     unsigned m_isPastNode : 1;
     77     unsigned m_webVTTNodeType : 4;
     78 
     79     AtomicString m_language;
     80 };
     81 
     82 inline WebVTTElement* toWebVTTElement(Node* node)
     83 {
     84     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isWebVTTElement());
     85     return static_cast<WebVTTElement*>(node);
     86 }
     87 
     88 // This will catch anyone doing an unnecessary cast.
     89 void toWebVTTElement(const WebVTTElement*);
     90 
     91 
     92 } // namespace WebCore
     93 
     94