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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/*
* Copyright (C) 2009 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
#include "config.h"
#if ENABLE(RUBY)
#include "RenderRubyRun.h"
#include "RenderRubyBase.h"
#include "RenderRubyText.h"
#include "RenderView.h"
using namespace std;
namespace WebCore {
RenderRubyRun::RenderRubyRun(Node* node)
: RenderBlock(node)
, m_beingDestroyed(false)
{
setReplaced(true);
setInline(true);
}
RenderRubyRun::~RenderRubyRun()
{
}
void RenderRubyRun::destroy()
{
// Mark if the run is being destroyed to avoid trouble in removeChild().
m_beingDestroyed = true;
RenderBlock::destroy();
}
bool RenderRubyRun::hasRubyText() const
{
// The only place where a ruby text can be is in the first position
// Note: As anonymous blocks, ruby runs do not have ':before' or ':after' content themselves.
return firstChild() && firstChild()->isRubyText();
}
bool RenderRubyRun::hasRubyBase() const
{
// The only place where a ruby base can be is in the last position
// Note: As anonymous blocks, ruby runs do not have ':before' or ':after' content themselves.
return lastChild() && lastChild()->isRubyBase();
}
bool RenderRubyRun::isEmpty() const
{
return !hasRubyText() && !hasRubyBase();
}
RenderRubyText* RenderRubyRun::rubyText() const
{
RenderObject* child = firstChild();
return child && child->isRubyText() ? static_cast<RenderRubyText*>(child) : 0;
}
RenderRubyBase* RenderRubyRun::rubyBase() const
{
RenderObject* child = lastChild();
return child && child->isRubyBase() ? static_cast<RenderRubyBase*>(child) : 0;
}
RenderRubyBase* RenderRubyRun::rubyBaseSafe()
{
RenderRubyBase* base = rubyBase();
if (!base) {
base = createRubyBase();
RenderBlock::addChild(base);
}
return base;
}
RenderBlock* RenderRubyRun::firstLineBlock() const
{
return 0;
}
void RenderRubyRun::updateFirstLetter()
{
}
bool RenderRubyRun::isChildAllowed(RenderObject* child, RenderStyle*) const
{
return child->isRubyText() || child->isInline();
}
void RenderRubyRun::addChild(RenderObject* child, RenderObject* beforeChild)
{
ASSERT(child);
// If child is a ruby text
if (child->isRubyText()) {
if (!beforeChild) {
// RenderRuby has already ascertained that we can add the child here.
ASSERT(!hasRubyText());
// prepend ruby texts as first child
RenderBlock::addChild(child, firstChild());
} else if (beforeChild->isRubyText()) {
// New text is inserted just before another.
// In this case the new text takes the place of the old one, and
// the old text goes into a new run that is inserted as next sibling.
ASSERT(beforeChild->parent() == this);
RenderObject* ruby = parent();
ASSERT(ruby->isRuby());
RenderBlock* newRun = staticCreateRubyRun(ruby);
ruby->addChild(newRun, nextSibling());
// Add the new ruby text and move the old one to the new run
// Note: Doing it in this order and not using RenderRubyRun's methods,
// in order to avoid automatic removal of the ruby run in case there is no
// other child besides the old ruby text.
RenderBlock::addChild(child, beforeChild);
RenderBlock::removeChild(beforeChild);
newRun->addChild(beforeChild);
} else {
ASSERT(hasRubyBase()); // Otherwise beforeChild would be borked.
// Insertion before a ruby base object.
// In this case we need insert a new run before the current one and split the base.
RenderObject* ruby = parent();
RenderRubyRun* newRun = staticCreateRubyRun(ruby);
ruby->addChild(newRun, this);
newRun->addChild(child);
rubyBaseSafe()->moveChildren(newRun->rubyBaseSafe(), beforeChild);
}
} else {
// child is not a text -> insert it into the base
// (append it instead if beforeChild is the ruby text)
if (beforeChild && beforeChild->isRubyText())
beforeChild = 0;
rubyBaseSafe()->addChild(child, beforeChild);
}
}
void RenderRubyRun::removeChild(RenderObject* child)
{
// If the child is a ruby text, then merge the ruby base with the base of
// the right sibling run, if possible.
if (!m_beingDestroyed && !documentBeingDestroyed() && child->isRubyText()) {
RenderRubyBase* base = rubyBase();
RenderObject* rightNeighbour = nextSibling();
if (base && rightNeighbour && rightNeighbour->isRubyRun()) {
// Ruby run without a base can happen only at the first run.
RenderRubyRun* rightRun = static_cast<RenderRubyRun*>(rightNeighbour);
ASSERT(rightRun->hasRubyBase());
RenderRubyBase* rightBase = rightRun->rubyBaseSafe();
// Collect all children in a single base, then swap the bases.
rightBase->moveChildren(base);
moveChildTo(rightRun, rightRun->children(), base);
rightRun->moveChildTo(this, children(), rightBase);
// The now empty ruby base will be removed below.
}
}
RenderBlock::removeChild(child);
if (!m_beingDestroyed && !documentBeingDestroyed()) {
// Check if our base (if any) is now empty. If so, destroy it.
RenderBlock* base = rubyBase();
if (base && !base->firstChild()) {
RenderBlock::removeChild(base);
base->deleteLineBoxTree();
base->destroy();
}
// If any of the above leaves the run empty, destroy it as well.
if (isEmpty()) {
parent()->removeChild(this);
deleteLineBoxTree();
destroy();
}
}
}
RenderRubyBase* RenderRubyRun::createRubyBase() const
{
RenderRubyBase* rb = new (renderArena()) RenderRubyBase(document() /* anonymous */);
RefPtr<RenderStyle> newStyle = RenderStyle::create();
newStyle->inheritFrom(style());
newStyle->setDisplay(BLOCK);
newStyle->setTextAlign(CENTER); // FIXME: use WEBKIT_CENTER?
rb->setStyle(newStyle.release());
return rb;
}
RenderRubyRun* RenderRubyRun::staticCreateRubyRun(const RenderObject* parentRuby)
{
ASSERT(parentRuby && parentRuby->isRuby());
RenderRubyRun* rr = new (parentRuby->renderArena()) RenderRubyRun(parentRuby->document() /* anonymous */);
RefPtr<RenderStyle> newStyle = RenderStyle::create();
newStyle->inheritFrom(parentRuby->style());
newStyle->setDisplay(INLINE_BLOCK);
rr->setStyle(newStyle.release());
return rr;
}
} // namespace WebCore
#endif
|