1/*
2 * (C) 1999-2003 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2004-2017 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#include "config.h"
22#include "CSSImageValue.h"
23
24#include "CSSMarkup.h"
25#include "CSSPrimitiveValue.h"
26#include "CSSValueKeywords.h"
27#include "CachedImage.h"
28#include "CachedResourceLoader.h"
29#include "CachedResourceRequest.h"
30#include "CachedResourceRequestInitiators.h"
31#include "DeprecatedCSSOMPrimitiveValue.h"
32#include "Document.h"
33#include "Element.h"
34
35namespace WebCore {
36
37CSSImageValue::CSSImageValue(URL&& url, LoadedFromOpaqueSource loadedFromOpaqueSource)
38 : CSSValue(ImageClass)
39 , m_url(WTFMove(url))
40 , m_accessedImage(false)
41 , m_loadedFromOpaqueSource(loadedFromOpaqueSource)
42{
43}
44
45CSSImageValue::CSSImageValue(CachedImage& image)
46 : CSSValue(ImageClass)
47 , m_url(image.url())
48 , m_cachedImage(&image)
49 , m_accessedImage(true)
50{
51}
52
53
54CSSImageValue::~CSSImageValue() = default;
55
56bool CSSImageValue::isPending() const
57{
58 return !m_accessedImage;
59}
60
61CachedImage* CSSImageValue::loadImage(CachedResourceLoader& loader, const ResourceLoaderOptions& options)
62{
63 if (!m_accessedImage) {
64 m_accessedImage = true;
65
66 ResourceLoaderOptions loadOptions = options;
67 loadOptions.loadedFromOpaqueSource = m_loadedFromOpaqueSource;
68 CachedResourceRequest request(ResourceRequest(loader.document()->completeURL(m_url.string())), loadOptions);
69 if (m_initiatorName.isEmpty())
70 request.setInitiator(cachedResourceRequestInitiators().css);
71 else
72 request.setInitiator(m_initiatorName);
73
74 if (options.mode == FetchOptions::Mode::Cors) {
75 ASSERT(loader.document());
76 request.updateForAccessControl(*loader.document());
77 }
78 m_cachedImage = loader.requestImage(WTFMove(request)).value_or(nullptr);
79 }
80 return m_cachedImage.get();
81}
82
83bool CSSImageValue::traverseSubresources(const WTF::Function<bool (const CachedResource&)>& handler) const
84{
85 if (!m_cachedImage)
86 return false;
87 return handler(*m_cachedImage);
88}
89
90bool CSSImageValue::equals(const CSSImageValue& other) const
91{
92 return m_url == other.m_url;
93}
94
95String CSSImageValue::customCSSText() const
96{
97 return serializeURL(m_url);
98}
99
100Ref<DeprecatedCSSOMValue> CSSImageValue::createDeprecatedCSSOMWrapper(CSSStyleDeclaration& styleDeclaration) const
101{
102 // NOTE: We expose CSSImageValues as URI primitive values in CSSOM to maintain old behavior.
103 return DeprecatedCSSOMPrimitiveValue::create(CSSPrimitiveValue::create(m_url, CSSPrimitiveValue::CSS_URI), styleDeclaration);
104}
105
106bool CSSImageValue::knownToBeOpaque(const RenderElement& renderer) const
107{
108 if (!m_cachedImage)
109 return false;
110 return m_cachedImage->currentFrameKnownToBeOpaque(&renderer);
111}
112
113} // namespace WebCore
114