File: CSSPropertySourceData.h

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/*
 * Copyright (c) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef CSSPropertySourceData_h
#define CSSPropertySourceData_h

#include "core/css/StyleRule.h"
#include "platform/heap/Handle.h"
#include "wtf/Forward.h"
#include "wtf/RefCounted.h"
#include "wtf/Vector.h"
#include "wtf/text/WTFString.h"

namespace blink {

class SourceRange {
  DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();

 public:
  SourceRange();
  SourceRange(unsigned start, unsigned end);
  unsigned length() const;

  unsigned start;
  unsigned end;
};

}  // namespace blink

WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::SourceRange);

namespace blink {

class CSSPropertySourceData {
  DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();

 public:
  CSSPropertySourceData(const String& name,
                        const String& value,
                        bool important,
                        bool disabled,
                        bool parsedOk,
                        const SourceRange& range);
  CSSPropertySourceData(const CSSPropertySourceData& other);

  String name;
  String value;
  bool important;
  bool disabled;
  bool parsedOk;
  SourceRange range;
};

}  // namespace blink

WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::CSSPropertySourceData);

namespace blink {

class CSSStyleSourceData {
  USING_FAST_MALLOC(CSSStyleSourceData);

 public:
  static std::unique_ptr<CSSStyleSourceData> create() {
    return WTF::wrapUnique(new CSSStyleSourceData);
  }

  Vector<CSSPropertySourceData> propertyData;
};

class CSSMediaQueryExpSourceData {
  DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();

 public:
  CSSMediaQueryExpSourceData(const SourceRange& valueRange)
      : valueRange(valueRange) {}

  SourceRange valueRange;
};

}  // namespace blink

WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::CSSMediaQueryExpSourceData);

namespace blink {

class CSSMediaQuerySourceData {
 public:
  static std::unique_ptr<CSSMediaQuerySourceData> create() {
    return WTF::wrapUnique(new CSSMediaQuerySourceData);
  }

  Vector<CSSMediaQueryExpSourceData> expData;
};

class CSSMediaSourceData {
  USING_FAST_MALLOC(CSSMediaSourceData);

 public:
  static std::unique_ptr<CSSMediaSourceData> create() {
    return WTF::wrapUnique(new CSSMediaSourceData);
  }

  Vector<std::unique_ptr<CSSMediaQuerySourceData>> queryData;
};

class CSSRuleSourceData;
using RuleSourceDataList = Vector<RefPtr<CSSRuleSourceData>>;
using SelectorRangeList = Vector<SourceRange>;

class CSSRuleSourceData : public RefCounted<CSSRuleSourceData> {
 public:
  static PassRefPtr<CSSRuleSourceData> create(StyleRule::RuleType type) {
    return adoptRef(new CSSRuleSourceData(type));
  }

  StyleRule::RuleType type;

  // Range of the selector list in the enclosing source.
  SourceRange ruleHeaderRange;

  // Range of the rule body (e.g. style text for style rules) in the enclosing
  // source.
  SourceRange ruleBodyRange;

  // Only for CSSStyleRules.
  SelectorRangeList selectorRanges;

  // Only for CSSStyleRules, CSSFontFaceRules, and CSSPageRules.
  std::unique_ptr<CSSStyleSourceData> styleSourceData;

  // Only for CSSMediaRules.
  RuleSourceDataList childRules;

  // Only for CSSMediaRules and CSSImportRules.
  std::unique_ptr<CSSMediaSourceData> mediaSourceData;

 private:
  CSSRuleSourceData(StyleRule::RuleType type) : type(type) {
    if (type == StyleRule::Style || type == StyleRule::FontFace ||
        type == StyleRule::Page || type == StyleRule::Keyframe)
      styleSourceData = CSSStyleSourceData::create();
    if (type == StyleRule::Media || type == StyleRule::Import)
      mediaSourceData = CSSMediaSourceData::create();
  }
};

}  // namespace blink

#endif  // CSSPropertySourceData_h