/*
 * Copyright (C) 2013 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
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 */

#ifndef WebSelector_h
#define WebSelector_h

#include "../platform/WebCommon.h"

namespace blink {

class WebString;

// Terminology from http://dev.w3.org/csswg/selectors4/#structure.
enum WebSelectorType {
    WebSelectorTypeComplex,
    WebSelectorTypeCompound,
    // Not yet implemented:
    // SelectorTypeSimple,
};

// 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|.
// Returns "" for an invalid selector or a selector that doesn't match the restrictions.
// The canonical form is not guaranteed to stay the same over time.
BLINK_EXPORT WebString canonicalizeSelector(WebString selector, WebSelectorType restriction = WebSelectorTypeComplex);

} // namespace blink

#endif