1/*
2 * Copyright (C) 2013 Adobe Systems Incorporated. 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 *
8 * 1. Redistributions of source code must retain the above
9 *    copyright notice, this list of conditions and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above
12 *    copyright notice, this list of conditions and the following
13 *    disclaimer in the documentation and/or other materials
14 *    provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include "config.h"
31#include "WebKitCSSFilterRule.h"
32
33#if ENABLE(CSS_SHADERS)
34
35#include "PropertySetCSSStyleDeclaration.h"
36#include "StylePropertySet.h"
37#include "StyleRule.h"
38#include <wtf/text/StringBuilder.h>
39
40namespace WebCore {
41
42WebKitCSSFilterRule::WebKitCSSFilterRule(StyleRuleFilter* filterRule, CSSStyleSheet* parent)
43    : CSSRule(parent)
44    , m_filterRule(filterRule)
45{
46}
47
48WebKitCSSFilterRule::~WebKitCSSFilterRule()
49{
50    if (m_propertiesCSSOMWrapper)
51        m_propertiesCSSOMWrapper->clearParentRule();
52}
53
54CSSStyleDeclaration* WebKitCSSFilterRule::style()
55{
56    if (!m_propertiesCSSOMWrapper)
57        m_propertiesCSSOMWrapper = StyleRuleCSSStyleDeclaration::create(m_filterRule->mutableProperties(), this);
58    return m_propertiesCSSOMWrapper.get();
59}
60
61String WebKitCSSFilterRule::cssText() const
62{
63    StringBuilder result;
64    result.appendLiteral("@-webkit-filter ");
65
66    String filterName = m_filterRule->filterName();
67    result.append(filterName);
68    result.appendLiteral(" { ");
69
70    String descs = m_filterRule->properties()->asText();
71    result.append(descs);
72    if (!descs.isEmpty())
73        result.append(' ');
74    result.append('}');
75
76    return result.toString();
77}
78
79void WebKitCSSFilterRule::reattach(StyleRuleBase* rule)
80{
81    ASSERT(rule);
82    ASSERT_WITH_SECURITY_IMPLICATION(rule->isFilterRule());
83    m_filterRule = static_cast<StyleRuleFilter*>(rule);
84    if (m_propertiesCSSOMWrapper)
85        m_propertiesCSSOMWrapper->reattach(m_filterRule->mutableProperties());
86}
87
88} // namespace WebCore
89
90#endif // ENABLE(CSS_SHADERS)
91