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,
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 WebSelector_h
32#define WebSelector_h
33
34#include "../platform/WebCommon.h"
35
36namespace blink {
37
38class WebString;
39
40// Terminology from http://dev.w3.org/csswg/selectors4/#structure.
41enum 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.
51BLINK_EXPORT WebString canonicalizeSelector(WebString selector, WebSelectorType restriction = WebSelectorTypeComplex);
52
53} // namespace blink
54
55#endif
56