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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 "wtf/Forward.h"
     35 #include "wtf/RefCounted.h"
     36 #include "wtf/Vector.h"
     37 #include "wtf/text/WTFString.h"
     38 
     39 namespace WebCore {
     40 
     41 class StyleRuleBase;
     42 
     43 struct SourceRange {
     44     SourceRange();
     45     SourceRange(unsigned start, unsigned end);
     46     unsigned length() const;
     47 
     48     unsigned start;
     49     unsigned end;
     50 };
     51 
     52 struct CSSPropertySourceData {
     53     static void init();
     54 
     55     CSSPropertySourceData(const String& name, const String& value, bool important, bool disabled, bool parsedOk, const SourceRange& range);
     56     CSSPropertySourceData(const CSSPropertySourceData& other);
     57     CSSPropertySourceData();
     58 
     59     String toString() const;
     60     unsigned hash() const;
     61 
     62     String name;
     63     String value;
     64     bool important;
     65     bool disabled;
     66     bool parsedOk;
     67     SourceRange range;
     68 };
     69 
     70 #ifndef CSSPROPERTYSOURCEDATA_HIDE_GLOBALS
     71 extern const CSSPropertySourceData emptyCSSPropertySourceData;
     72 #endif
     73 
     74 struct CSSStyleSourceData : public RefCounted<CSSStyleSourceData> {
     75     static PassRefPtr<CSSStyleSourceData> create()
     76     {
     77         return adoptRef(new CSSStyleSourceData());
     78     }
     79 
     80     Vector<CSSPropertySourceData> propertyData;
     81 };
     82 
     83 struct CSSRuleSourceData;
     84 typedef Vector<RefPtr<CSSRuleSourceData> > RuleSourceDataList;
     85 typedef Vector<SourceRange> SelectorRangeList;
     86 
     87 struct CSSRuleSourceData : public RefCounted<CSSRuleSourceData> {
     88     enum Type {
     89         UNKNOWN_RULE,
     90         STYLE_RULE,
     91         CHARSET_RULE,
     92         IMPORT_RULE,
     93         MEDIA_RULE,
     94         FONT_FACE_RULE,
     95         PAGE_RULE,
     96         KEYFRAMES_RULE,
     97         REGION_RULE,
     98         VIEWPORT_RULE,
     99         SUPPORTS_RULE,
    100         FILTER_RULE
    101     };
    102 
    103     static PassRefPtr<CSSRuleSourceData> create(Type type)
    104     {
    105         return adoptRef(new CSSRuleSourceData(type));
    106     }
    107 
    108     static PassRefPtr<CSSRuleSourceData> createUnknown()
    109     {
    110         return adoptRef(new CSSRuleSourceData(UNKNOWN_RULE));
    111     }
    112 
    113     CSSRuleSourceData(Type type)
    114         : type(type)
    115     {
    116         if (type == STYLE_RULE || type == FONT_FACE_RULE || type == PAGE_RULE)
    117             styleSourceData = CSSStyleSourceData::create();
    118     }
    119 
    120     Type type;
    121 
    122     // Range of the selector list in the enclosing source.
    123     SourceRange ruleHeaderRange;
    124 
    125     // Range of the rule body (e.g. style text for style rules) in the enclosing source.
    126     SourceRange ruleBodyRange;
    127 
    128     // Only for CSSStyleRules.
    129     SelectorRangeList selectorRanges;
    130 
    131     // Only for CSSStyleRules, CSSFontFaceRules, and CSSPageRules.
    132     RefPtr<CSSStyleSourceData> styleSourceData;
    133 
    134     // Only for CSSMediaRules.
    135     RuleSourceDataList childRules;
    136 };
    137 
    138 } // namespace WebCore
    139 
    140 #endif // CSSPropertySourceData_h
    141