1 | /* |
2 | * Copyright (C) 2016 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 | #include "Element.h" |
29 | #include <wtf/Vector.h> |
30 | |
31 | namespace WebCore { |
32 | |
33 | class DocumentRuleSets; |
34 | class RuleSet; |
35 | class SpaceSplitString; |
36 | struct InvalidationRuleSet; |
37 | |
38 | namespace Style { |
39 | |
40 | class ClassChangeInvalidation { |
41 | public: |
42 | ClassChangeInvalidation(Element&, const SpaceSplitString& oldClasses, const SpaceSplitString& newClasses); |
43 | ~ClassChangeInvalidation(); |
44 | |
45 | private: |
46 | void computeInvalidation(const SpaceSplitString& oldClasses, const SpaceSplitString& newClasses); |
47 | void invalidateStyleWithRuleSets(); |
48 | |
49 | const bool m_isEnabled; |
50 | Element& m_element; |
51 | |
52 | Vector<const InvalidationRuleSet*, 4> m_invalidationRuleSets; |
53 | }; |
54 | |
55 | inline ClassChangeInvalidation::ClassChangeInvalidation(Element& element, const SpaceSplitString& oldClasses, const SpaceSplitString& newClasses) |
56 | : m_isEnabled(element.needsStyleInvalidation()) |
57 | , m_element(element) |
58 | |
59 | { |
60 | if (!m_isEnabled) |
61 | return; |
62 | computeInvalidation(oldClasses, newClasses); |
63 | invalidateStyleWithRuleSets(); |
64 | } |
65 | |
66 | inline ClassChangeInvalidation::~ClassChangeInvalidation() |
67 | { |
68 | if (!m_isEnabled) |
69 | return; |
70 | invalidateStyleWithRuleSets(); |
71 | } |
72 | |
73 | } |
74 | } |
75 | |