1/*
2 * Copyright (C) 2017 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 "RenderTreePosition.h"
29
30namespace WebCore {
31
32class RenderFullScreen;
33class RenderGrid;
34class RenderTreeUpdater;
35
36class RenderTreeBuilder {
37public:
38 RenderTreeBuilder(RenderView&);
39 ~RenderTreeBuilder();
40
41 // This avoids having to convert all sites that need RenderTreeBuilder in one go.
42 // FIXME: Remove.
43 static RenderTreeBuilder* current() { return s_current; }
44
45 void attach(RenderTreePosition&, RenderPtr<RenderObject>);
46 void attach(RenderElement& parent, RenderPtr<RenderObject>, RenderObject* beforeChild = nullptr);
47
48 enum class CanCollapseAnonymousBlock { No, Yes };
49 RenderPtr<RenderObject> detach(RenderElement&, RenderObject&, CanCollapseAnonymousBlock = CanCollapseAnonymousBlock::Yes) WARN_UNUSED_RETURN;
50
51 void destroy(RenderObject& renderer);
52
53 // NormalizeAfterInsertion::Yes ensures that the destination subtree is consistent after the insertion (anonymous wrappers etc).
54 enum class NormalizeAfterInsertion { No, Yes };
55 void move(RenderBoxModelObject& from, RenderBoxModelObject& to, RenderObject& child, NormalizeAfterInsertion);
56
57 void updateAfterDescendants(RenderElement&);
58 void destroyAndCleanUpAnonymousWrappers(RenderObject& child);
59 void normalizeTreeAfterStyleChange(RenderElement&, RenderStyle& oldStyle);
60
61#if ENABLE(FULLSCREEN_API)
62 void createPlaceholderForFullScreen(RenderFullScreen&, std::unique_ptr<RenderStyle>, const LayoutRect&);
63#endif
64
65private:
66 void childFlowStateChangesAndAffectsParentBlock(RenderElement& child);
67 void childFlowStateChangesAndNoLongerAffectsParentBlock(RenderElement& child);
68 void attachIgnoringContinuation(RenderElement& parent, RenderPtr<RenderObject>, RenderObject* beforeChild = nullptr);
69 void attachToRenderGrid(RenderGrid& parent, RenderPtr<RenderObject> child, RenderObject* beforeChild = nullptr);
70 void attachToRenderElement(RenderElement& parent, RenderPtr<RenderObject> child, RenderObject* beforeChild = nullptr);
71 void attachToRenderElementInternal(RenderElement& parent, RenderPtr<RenderObject> child, RenderObject* beforeChild = nullptr);
72
73 RenderPtr<RenderObject> detachFromRenderElement(RenderElement& parent, RenderObject& child) WARN_UNUSED_RETURN;
74 RenderPtr<RenderObject> detachFromRenderGrid(RenderGrid& parent, RenderObject& child) WARN_UNUSED_RETURN;
75
76 void move(RenderBoxModelObject& from, RenderBoxModelObject& to, RenderObject& child, RenderObject* beforeChild, NormalizeAfterInsertion);
77 // Move all of the kids from |startChild| up to but excluding |endChild|. 0 can be passed as the |endChild| to denote
78 // that all the kids from |startChild| onwards should be moved.
79 void moveChildren(RenderBoxModelObject& from, RenderBoxModelObject& to, RenderObject* startChild, RenderObject* endChild, NormalizeAfterInsertion);
80 void moveChildren(RenderBoxModelObject& from, RenderBoxModelObject& to, RenderObject* startChild, RenderObject* endChild, RenderObject* beforeChild, NormalizeAfterInsertion);
81 void moveAllChildrenIncludingFloats(RenderBlock& from, RenderBlock& toBlock, RenderTreeBuilder::NormalizeAfterInsertion);
82 void moveAllChildren(RenderBoxModelObject& from, RenderBoxModelObject& to, NormalizeAfterInsertion);
83 void moveAllChildren(RenderBoxModelObject& from, RenderBoxModelObject& to, RenderObject* beforeChild, NormalizeAfterInsertion);
84
85 RenderObject* splitAnonymousBoxesAroundChild(RenderBox& parent, RenderObject& originalBeforeChild);
86 void makeChildrenNonInline(RenderBlock& parent, RenderObject* insertionPoint = nullptr);
87 void removeAnonymousWrappersForInlineChildrenIfNeeded(RenderElement& parent);
88
89 class FirstLetter;
90 class List;
91 class MultiColumn;
92 class Table;
93 class Ruby;
94 class FormControls;
95 class Block;
96 class BlockFlow;
97 class Inline;
98 class SVG;
99#if ENABLE(MATHML)
100 class MathML;
101#endif
102 class Continuation;
103#if ENABLE(FULLSCREEN_API)
104 class FullScreen;
105#endif
106
107 FirstLetter& firstLetterBuilder() { return *m_firstLetterBuilder; }
108 List& listBuilder() { return *m_listBuilder; }
109 MultiColumn& multiColumnBuilder() { return *m_multiColumnBuilder; }
110 Table& tableBuilder() { return *m_tableBuilder; }
111 Ruby& rubyBuilder() { return *m_rubyBuilder; }
112 FormControls& formControlsBuilder() { return *m_formControlsBuilder; }
113 Block& blockBuilder() { return *m_blockBuilder; }
114 BlockFlow& blockFlowBuilder() { return *m_blockFlowBuilder; }
115 Inline& inlineBuilder() { return *m_inlineBuilder; }
116 SVG& svgBuilder() { return *m_svgBuilder; }
117#if ENABLE(MATHML)
118 MathML& mathMLBuilder() { return *m_mathMLBuilder; }
119#endif
120 Continuation& continuationBuilder() { return *m_continuationBuilder; }
121#if ENABLE(FULLSCREEN_API)
122 FullScreen& fullScreenBuilder() { return *m_fullScreenBuilder; }
123#endif
124
125 RenderView& m_view;
126 RenderTreeBuilder* m_previous { nullptr };
127 static RenderTreeBuilder* s_current;
128
129 std::unique_ptr<FirstLetter> m_firstLetterBuilder;
130 std::unique_ptr<List> m_listBuilder;
131 std::unique_ptr<MultiColumn> m_multiColumnBuilder;
132 std::unique_ptr<Table> m_tableBuilder;
133 std::unique_ptr<Ruby> m_rubyBuilder;
134 std::unique_ptr<FormControls> m_formControlsBuilder;
135 std::unique_ptr<Block> m_blockBuilder;
136 std::unique_ptr<BlockFlow> m_blockFlowBuilder;
137 std::unique_ptr<Inline> m_inlineBuilder;
138 std::unique_ptr<SVG> m_svgBuilder;
139#if ENABLE(MATHML)
140 std::unique_ptr<MathML> m_mathMLBuilder;
141#endif
142 std::unique_ptr<Continuation> m_continuationBuilder;
143#if ENABLE(FULLSCREEN_API)
144 std::unique_ptr<FullScreen> m_fullScreenBuilder;
145#endif
146};
147
148}
149