1/*
2 * Copyright (C) 2014, 2015 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 INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#if ENABLE(CONTENT_EXTENSIONS)
29
30#include "ContentExtension.h"
31#include "ContentExtensionRule.h"
32#include <wtf/HashMap.h>
33#include <wtf/text/StringHash.h>
34#include <wtf/text/WTFString.h>
35
36namespace WebCore {
37
38class DocumentLoader;
39class ResourceRequest;
40
41namespace ContentExtensions {
42
43class CompiledContentExtension;
44struct ResourceLoadInfo;
45
46// The ContentExtensionsBackend is the internal model of all the content extensions.
47//
48// It provides two services:
49// 1) It stores the rules for each content extension.
50// 2) It provides APIs for the WebCore interfaces to use those rules efficiently.
51class ContentExtensionsBackend {
52public:
53 // - Rule management interface. This can be used by upper layer.
54
55 // Set a list of rules for a given name. If there were existing rules for the name, they are overridden.
56 // The identifier cannot be empty.
57 WEBCORE_EXPORT void addContentExtension(const String& identifier, Ref<CompiledContentExtension>, ContentExtension::ShouldCompileCSS = ContentExtension::ShouldCompileCSS::Yes);
58 WEBCORE_EXPORT void removeContentExtension(const String& identifier);
59 WEBCORE_EXPORT void removeAllContentExtensions();
60
61 // - Internal WebCore Interface.
62 WEBCORE_EXPORT Vector<ActionsFromContentRuleList> actionsForResourceLoad(const ResourceLoadInfo&) const;
63 WEBCORE_EXPORT StyleSheetContents* globalDisplayNoneStyleSheet(const String& identifier) const;
64
65 ContentRuleListResults processContentRuleListsForLoad(const URL&, OptionSet<ResourceType>, DocumentLoader& initiatingDocumentLoader);
66 WEBCORE_EXPORT ContentRuleListResults processContentRuleListsForPingLoad(const URL&, const URL& mainDocumentURL);
67
68 static const String& displayNoneCSSRule();
69
70 void forEach(const Function<void(const String&, ContentExtension&)>&);
71
72private:
73 HashMap<String, Ref<ContentExtension>> m_contentExtensions;
74};
75
76} // namespace ContentExtensions
77} // namespace WebCore
78
79#endif // ENABLE(CONTENT_EXTENSIONS)
80