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      1 /*
      2  * Copyright (c) 2010 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  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef CSSPropertySourceData_h
     32 #define CSSPropertySourceData_h
     33 
     34 #include "platform/heap/Handle.h"
     35 #include "wtf/Forward.h"
     36 #include "wtf/RefCounted.h"
     37 #include "wtf/Vector.h"
     38 #include "wtf/text/WTFString.h"
     39 
     40 namespace blink {
     41 
     42 struct SourceRange {
     43     ALLOW_ONLY_INLINE_ALLOCATION();
     44 public:
     45     SourceRange();
     46     SourceRange(unsigned start, unsigned end);
     47     unsigned length() const;
     48 
     49     void trace(Visitor*) { }
     50 
     51     unsigned start;
     52     unsigned end;
     53 };
     54 
     55 struct CSSPropertySourceData {
     56     ALLOW_ONLY_INLINE_ALLOCATION();
     57 public:
     58     CSSPropertySourceData(const String& name, const String& value, bool important, bool disabled, bool parsedOk, const SourceRange& range);
     59     CSSPropertySourceData(const CSSPropertySourceData& other);
     60     CSSPropertySourceData();
     61 
     62     String toString() const;
     63     unsigned hash() const;
     64 
     65     void trace(Visitor* visitor) { visitor->trace(range); }
     66 
     67     String name;
     68     String value;
     69     bool important;
     70     bool disabled;
     71     bool parsedOk;
     72     SourceRange range;
     73 };
     74 
     75 struct CSSStyleSourceData : public RefCountedWillBeGarbageCollected<CSSStyleSourceData> {
     76     static PassRefPtrWillBeRawPtr<CSSStyleSourceData> create()
     77     {
     78         return adoptRefWillBeNoop(new CSSStyleSourceData());
     79     }
     80 
     81     void trace(Visitor* visitor) { visitor->trace(propertyData); }
     82 
     83     WillBeHeapVector<CSSPropertySourceData> propertyData;
     84 };
     85 
     86 struct CSSRuleSourceData;
     87 typedef WillBeHeapVector<RefPtrWillBeMember<CSSRuleSourceData> > RuleSourceDataList;
     88 typedef WillBeHeapVector<SourceRange> SelectorRangeList;
     89 
     90 struct CSSRuleSourceData : public RefCountedWillBeGarbageCollected<CSSRuleSourceData> {
     91     enum Type {
     92         UNKNOWN_RULE,
     93         STYLE_RULE,
     94         CHARSET_RULE,
     95         IMPORT_RULE,
     96         MEDIA_RULE,
     97         FONT_FACE_RULE,
     98         PAGE_RULE,
     99         KEYFRAMES_RULE,
    100         VIEWPORT_RULE,
    101         SUPPORTS_RULE,
    102         FILTER_RULE
    103     };
    104 
    105     static PassRefPtrWillBeRawPtr<CSSRuleSourceData> create(Type type)
    106     {
    107         return adoptRefWillBeNoop(new CSSRuleSourceData(type));
    108     }
    109 
    110     static PassRefPtrWillBeRawPtr<CSSRuleSourceData> createUnknown()
    111     {
    112         return adoptRefWillBeNoop(new CSSRuleSourceData(UNKNOWN_RULE));
    113     }
    114 
    115     CSSRuleSourceData(Type type)
    116         : type(type)
    117     {
    118         if (type == STYLE_RULE || type == FONT_FACE_RULE || type == PAGE_RULE)
    119             styleSourceData = CSSStyleSourceData::create();
    120     }
    121 
    122     void trace(Visitor*);
    123 
    124     Type type;
    125 
    126     // Range of the selector list in the enclosing source.
    127     SourceRange ruleHeaderRange;
    128 
    129     // Range of the rule body (e.g. style text for style rules) in the enclosing source.
    130     SourceRange ruleBodyRange;
    131 
    132     // Only for CSSStyleRules.
    133     SelectorRangeList selectorRanges;
    134 
    135     // Only for CSSStyleRules, CSSFontFaceRules, and CSSPageRules.
    136     RefPtrWillBeMember<CSSStyleSourceData> styleSourceData;
    137 
    138     // Only for CSSMediaRules.
    139     RuleSourceDataList childRules;
    140 };
    141 
    142 } // namespace blink
    143 
    144 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::SourceRange);
    145 WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::CSSPropertySourceData);
    146 
    147 #endif // CSSPropertySourceData_h
    148