1/*
2 * Copyright (C) 2012 Intel Corporation. All rights reserved.
3 * Copyright (C) 2012 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above
10 *    copyright notice, this list of conditions and the following
11 *    disclaimer.
12 * 2. Redistributions in binary form must reproduce the above
13 *    copyright notice, this list of conditions and the following
14 *    disclaimer in the documentation and/or other materials
15 *    provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
26 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
27 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "WebKitCSSViewportRule.h"
33
34#if ENABLE(CSS_DEVICE_ADAPTATION)
35
36#include "PropertySetCSSStyleDeclaration.h"
37#include "StylePropertySet.h"
38#include "StyleRule.h"
39#include <wtf/text/StringBuilder.h>
40
41namespace WebCore {
42
43WebKitCSSViewportRule::WebKitCSSViewportRule(StyleRuleViewport* viewportRule, CSSStyleSheet* sheet)
44    : CSSRule(sheet)
45    , m_viewportRule(viewportRule)
46{
47}
48
49WebKitCSSViewportRule::~WebKitCSSViewportRule()
50{
51    if (m_propertiesCSSOMWrapper)
52        m_propertiesCSSOMWrapper->clearParentRule();
53}
54
55CSSStyleDeclaration* WebKitCSSViewportRule::style()
56{
57    if (!m_propertiesCSSOMWrapper)
58        m_propertiesCSSOMWrapper = StyleRuleCSSStyleDeclaration::create(m_viewportRule->mutableProperties(), this);
59
60    return m_propertiesCSSOMWrapper.get();
61}
62
63String WebKitCSSViewportRule::cssText() const
64{
65    StringBuilder result;
66    result.appendLiteral("@-webkit-viewport { ");
67
68    String decls = m_viewportRule->properties()->asText();
69    result.append(decls);
70    if (!decls.isEmpty())
71        result.append(' ');
72
73    result.append('}');
74
75    return result.toString();
76}
77
78void WebKitCSSViewportRule::reattach(StyleRuleBase* rule)
79{
80    ASSERT(rule);
81    ASSERT_WITH_SECURITY_IMPLICATION(rule->isViewportRule());
82    m_viewportRule = static_cast<StyleRuleViewport*>(rule);
83
84    if (m_propertiesCSSOMWrapper)
85        m_propertiesCSSOMWrapper->reattach(m_viewportRule->mutableProperties());
86}
87
88} // namespace WebCore
89
90#endif // ENABLE(CSS_DEVICE_ADAPTATION)
91