third_party/WebKit/Source/core/dom/StyleSheetCandidate.h

   1 /*
   2  * Copyright (C) 2013 Google 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 are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Neither the name of Google Inc. nor the names of its
  11  * contributors may be used to endorse or promote products derived from
  12  * this software without specific prior written permission.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  15  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  16  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  17  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  18  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  19  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  20  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY 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 StyleSheetCandidate_h
  28 #define StyleSheetCandidate_h
  29
  30 #include "platform/heap/Handle.h"
  31 #include "wtf/text/AtomicString.h"
  32 #include "wtf/text/WTFString.h"
  33
  34 namespace blink {
  35
  36 class Document;
  37 class Node;
  38 class StyleSheet;
  39
  40 class StyleSheetCandidate {
  41     STACK_ALLOCATED();
  42 public:
  43     enum Type {
  44         HTMLLink,
  45         HTMLStyle,
  46         SVGStyle,
  47         Pi
  48     };
  49
  50     StyleSheetCandidate(Node& node)
  51         : m_node(node)
  52         , m_type(typeOf(node))
  53     { }
  54
  55     bool isXSL() const;
  56     bool isImport() const;
  57     bool isAlternate() const;
  58     bool isEnabledViaScript() const;
  59     bool isEnabledAndLoading() const;
  60     bool hasPreferrableName(const String& currentPreferrableName) const;
  61     bool canBeActivated(const String& currentPreferrableName) const;
  62     bool isCSSStyle() const;
  63
  64     StyleSheet* sheet() const;
  65     AtomicString title() const;
  66     Document* importedDocument() const;
  67
  68 private:
  69     bool isElement() const { return m_type != Pi; }
  70     bool isHTMLLink() const { return m_type == HTMLLink; }
  71     Node& node() const { return *m_node; }
  72
  73     static Type typeOf(Node&);
  74
  75     RawPtrWillBeMember<Node> m_node;
  76     Type m_type;
  77 };
  78
  79 }
  80
  81 #endif
  82