1/*
2 * Copyright (C) 2011 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef WebKitCSSFilterValue_h
27#define WebKitCSSFilterValue_h
28
29#if ENABLE(CSS_FILTERS)
30
31#include "CSSValueList.h"
32#include <wtf/PassRefPtr.h>
33#include <wtf/RefPtr.h>
34
35namespace WebCore {
36
37class WebKitCSSFilterValue : public CSSValueList {
38public:
39    // NOTE: these have to match the values in the IDL
40    enum FilterOperationType {
41        UnknownFilterOperation,
42        ReferenceFilterOperation,
43        GrayscaleFilterOperation,
44        SepiaFilterOperation,
45        SaturateFilterOperation,
46        HueRotateFilterOperation,
47        InvertFilterOperation,
48        OpacityFilterOperation,
49        BrightnessFilterOperation,
50        ContrastFilterOperation,
51        BlurFilterOperation,
52        DropShadowFilterOperation
53#if ENABLE(CSS_SHADERS)
54        , CustomFilterOperation
55#endif
56    };
57
58    static bool typeUsesSpaceSeparator(FilterOperationType);
59
60    static PassRefPtr<WebKitCSSFilterValue> create(FilterOperationType type)
61    {
62        return adoptRef(new WebKitCSSFilterValue(type));
63    }
64
65    String customCssText() const;
66
67    FilterOperationType operationType() const { return m_type; }
68
69    PassRefPtr<WebKitCSSFilterValue> cloneForCSSOM() const;
70
71    bool equals(const WebKitCSSFilterValue&) const;
72
73private:
74    WebKitCSSFilterValue(FilterOperationType);
75    WebKitCSSFilterValue(const WebKitCSSFilterValue& cloneFrom);
76
77    FilterOperationType m_type;
78};
79
80}
81
82#endif // ENABLE(CSS_FILTERS)
83
84#endif
85