third_party/WebKit/public/web/WebSelector.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  *     * 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,
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  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #ifndef WebSelector_h
  32 #define WebSelector_h
  33
  34 #include "../platform/WebCommon.h"
  35
  36 namespace blink {
  37
  38 class WebString;
  39
  40 // Terminology from http://dev.w3.org/csswg/selectors4/#structure.
  41 enum WebSelectorType {
  42     WebSelectorTypeComplex,
  43     WebSelectorTypeCompound,
  44     // Not yet implemented:
  45     // SelectorTypeSimple,
  46 };
  47
  48 // Returns the value that would be returned from CSSStyleRule.selectorText in the CSSOM for a rule with this selector (which can be a list), if the selector is valid and each component in the list has the type specified in |restriction|.
  49 // Returns "" for an invalid selector or a selector that doesn't match the restrictions.
  50 // The canonical form is not guaranteed to stay the same over time.
  51 BLINK_EXPORT WebString canonicalizeSelector(WebString selector, WebSelectorType restriction = WebSelectorTypeComplex);
  52
  53 } // namespace blink
  54
  55 #endif