1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* Copyright (C) 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "Node.h"
#include "StyleChange.h"
#include <wtf/HashMap.h>
#include <wtf/ListHashSet.h>
#include <wtf/TZoneMalloc.h>
namespace WebCore {
class ContainerNode;
class Document;
class Element;
class Node;
class RenderStyle;
class SVGElement;
class Text;
namespace Style {
struct ElementUpdate {
std::unique_ptr<RenderStyle> style;
Change change { Change::None };
bool recompositeLayer { false };
bool mayNeedRebuildRoot { false };
};
struct TextUpdate {
unsigned offset { 0 };
unsigned length { std::numeric_limits<unsigned>::max() };
std::optional<std::unique_ptr<RenderStyle>> inheritedDisplayContentsStyle;
};
class Update final : public CanMakeCheckedPtr<Update> {
WTF_MAKE_TZONE_ALLOCATED(Update);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(Update);
public:
Update(Document&);
~Update();
const ListHashSet<RefPtr<ContainerNode>>& roots() const { return m_roots; }
ListHashSet<RefPtr<Element>> takeRebuildRoots() { return WTFMove(m_rebuildRoots); }
const ElementUpdate* elementUpdate(const Element&) const;
ElementUpdate* elementUpdate(const Element&);
const TextUpdate* textUpdate(const Text&) const;
const RenderStyle* initialContainingBlockUpdate() const { return m_initialContainingBlockUpdate.get(); }
const RenderStyle* elementStyle(const Element&) const;
RenderStyle* elementStyle(const Element&);
const Document& document() const { return m_document; }
bool isEmpty() const { return !size(); }
unsigned size() const { return m_elements.size() + m_texts.size(); }
void addElement(Element&, Element* parent, ElementUpdate&&);
void addText(Text&, Element* parent, TextUpdate&&);
void addText(Text&, TextUpdate&&);
void addSVGRendererUpdate(SVGElement&);
void addInitialContainingBlockUpdate(std::unique_ptr<RenderStyle>);
private:
void addPossibleRoot(Element*);
void addPossibleRebuildRoot(Element&, Element* parent);
Ref<Document> m_document;
ListHashSet<RefPtr<ContainerNode>> m_roots;
ListHashSet<RefPtr<Element>> m_rebuildRoots;
UncheckedKeyHashMap<RefPtr<const Element>, ElementUpdate> m_elements;
UncheckedKeyHashMap<RefPtr<const Text>, TextUpdate> m_texts;
std::unique_ptr<RenderStyle> m_initialContainingBlockUpdate;
};
}
}
|
