1/*
2 * Copyright (C) 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 "DFABytecodeInterpreter.h"
31#include "StyleSheetContents.h"
32#include <wtf/Ref.h>
33#include <wtf/RefCounted.h>
34#include <wtf/RefPtr.h>
35
36namespace WebCore {
37
38namespace ContentExtensions {
39
40class CompiledContentExtension;
41
42class ContentExtension : public RefCounted<ContentExtension> {
43public:
44 enum class ShouldCompileCSS { No, Yes };
45 static Ref<ContentExtension> create(const String& identifier, Ref<CompiledContentExtension>&&, ShouldCompileCSS = ShouldCompileCSS::Yes);
46
47 const String& identifier() const { return m_identifier; }
48 const CompiledContentExtension& compiledExtension() const { return m_compiledExtension.get(); }
49 StyleSheetContents* globalDisplayNoneStyleSheet();
50 const DFABytecodeInterpreter::Actions& topURLActions(const URL& topURL);
51 const Vector<uint32_t>& universalActionsWithoutConditions() { return m_universalActionsWithoutConditions; }
52 const Vector<uint32_t>& universalActionsWithConditions(const URL& topURL);
53
54private:
55 ContentExtension(const String& identifier, Ref<CompiledContentExtension>&&, ShouldCompileCSS);
56 uint32_t findFirstIgnorePreviousRules() const;
57
58 String m_identifier;
59 Ref<CompiledContentExtension> m_compiledExtension;
60
61 RefPtr<StyleSheetContents> m_globalDisplayNoneStyleSheet;
62 void compileGlobalDisplayNoneStyleSheet();
63
64 URL m_cachedTopURL;
65 void populateConditionCacheIfNeeded(const URL& topURL);
66 DFABytecodeInterpreter::Actions m_cachedTopURLActions;
67 Vector<uint32_t> m_cachedUniversalConditionedActions;
68
69 Vector<uint32_t> m_universalActionsWithoutConditions;
70 Vector<uint64_t> m_universalActionsWithConditions;
71};
72
73} // namespace ContentExtensions
74} // namespace WebCore
75
76#endif // ENABLE(CONTENT_EXTENSIONS)
77