1 | /* |
2 | * Copyright (C) 2012 Google Inc. All rights reserved. |
3 | * Copyright (C) 2017 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 are |
7 | * met: |
8 | * |
9 | * * Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * * Neither the name of Google Inc. nor the names of its |
12 | * contributors may be used to endorse or promote products derived from |
13 | * this software without specific prior written permission. |
14 | * |
15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
18 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
19 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
21 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | */ |
27 | |
28 | #include "config.h" |
29 | #include "PseudoElement.h" |
30 | |
31 | #include "CSSAnimationController.h" |
32 | #include "ContentData.h" |
33 | #include "DocumentTimeline.h" |
34 | #include "InspectorInstrumentation.h" |
35 | #include "RenderElement.h" |
36 | #include "RenderImage.h" |
37 | #include "RenderQuote.h" |
38 | #include "RuntimeEnabledFeatures.h" |
39 | #include "StyleResolver.h" |
40 | #include <wtf/IsoMallocInlines.h> |
41 | |
42 | namespace WebCore { |
43 | |
44 | WTF_MAKE_ISO_ALLOCATED_IMPL(PseudoElement); |
45 | |
46 | const QualifiedName& pseudoElementTagName() |
47 | { |
48 | static NeverDestroyed<QualifiedName> name(nullAtom(), "<pseudo>" , nullAtom()); |
49 | return name; |
50 | } |
51 | |
52 | String PseudoElement::pseudoElementNameForEvents(PseudoId pseudoId) |
53 | { |
54 | static NeverDestroyed<const String> after(MAKE_STATIC_STRING_IMPL("::after" )); |
55 | static NeverDestroyed<const String> before(MAKE_STATIC_STRING_IMPL("::before" )); |
56 | switch (pseudoId) { |
57 | case PseudoId::After: |
58 | return after; |
59 | case PseudoId::Before: |
60 | return before; |
61 | default: |
62 | return emptyString(); |
63 | } |
64 | } |
65 | |
66 | PseudoElement::PseudoElement(Element& host, PseudoId pseudoId) |
67 | : Element(pseudoElementTagName(), host.document(), CreatePseudoElement) |
68 | , m_hostElement(&host) |
69 | , m_pseudoId(pseudoId) |
70 | { |
71 | ASSERT(pseudoId == PseudoId::Before || pseudoId == PseudoId::After); |
72 | setHasCustomStyleResolveCallbacks(); |
73 | } |
74 | |
75 | PseudoElement::~PseudoElement() |
76 | { |
77 | ASSERT(!m_hostElement); |
78 | } |
79 | |
80 | Ref<PseudoElement> PseudoElement::create(Element& host, PseudoId pseudoId) |
81 | { |
82 | auto pseudoElement = adoptRef(*new PseudoElement(host, pseudoId)); |
83 | |
84 | InspectorInstrumentation::pseudoElementCreated(host.document().page(), pseudoElement.get()); |
85 | |
86 | return pseudoElement; |
87 | } |
88 | |
89 | void PseudoElement::clearHostElement() |
90 | { |
91 | InspectorInstrumentation::pseudoElementDestroyed(document().page(), *this); |
92 | |
93 | if (auto* timeline = document().existingTimeline()) |
94 | timeline->removeAnimationsForElement(*this); |
95 | if (auto* frame = document().frame()) |
96 | frame->animation().cancelAnimations(*this); |
97 | |
98 | m_hostElement = nullptr; |
99 | } |
100 | |
101 | bool PseudoElement::rendererIsNeeded(const RenderStyle& style) |
102 | { |
103 | return pseudoElementRendererIsNeeded(&style); |
104 | } |
105 | |
106 | } // namespace |
107 | |