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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#include "core/HTMLNames.h"
#include "core/dom/Element.h"
#include "core/dom/ElementTraversal.h"
#include "core/dom/NodeRenderStyle.h"
#include "core/dom/StyleEngine.h"
#include "core/frame/FrameView.h"
#include "core/html/HTMLDocument.h"
#include "core/html/HTMLElement.h"
#include "core/testing/DummyPageHolder.h"
#include <gtest/gtest.h>
using namespace blink;
using namespace HTMLNames;
namespace {
class AffectedByFocusTest : public ::testing::Test {
protected:
struct ElementResult {
const blink::HTMLQualifiedName tag;
bool affectedBy;
bool childrenOrSiblingsAffectedBy;
};
virtual void SetUp() override;
HTMLDocument& document() const { return *m_document; }
void setHtmlInnerHTML(const char* htmlContent);
void checkElements(ElementResult expected[], unsigned expectedCount) const;
private:
OwnPtr<DummyPageHolder> m_dummyPageHolder;
HTMLDocument* m_document;
};
void AffectedByFocusTest::SetUp()
{
m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
m_document = toHTMLDocument(&m_dummyPageHolder->document());
ASSERT(m_document);
}
void AffectedByFocusTest::setHtmlInnerHTML(const char* htmlContent)
{
document().documentElement()->setInnerHTML(String::fromUTF8(htmlContent), ASSERT_NO_EXCEPTION);
document().view()->updateLayoutAndStyleIfNeededRecursive();
}
void AffectedByFocusTest::checkElements(ElementResult expected[], unsigned expectedCount) const
{
unsigned i = 0;
HTMLElement* element = document().body();
for (; element && i < expectedCount; element = Traversal<HTMLElement>::next(*element), ++i) {
ASSERT_TRUE(element->hasTagName(expected[i].tag));
ASSERT(element->renderStyle());
ASSERT_EQ(expected[i].affectedBy, element->renderStyle()->affectedByFocus());
ASSERT_EQ(expected[i].childrenOrSiblingsAffectedBy, element->childrenOrSiblingsAffectedByFocus());
}
ASSERT(!element && i == expectedCount);
}
// A global :focus rule in html.css currently causes every single element to be
// affectedByFocus. Check that all elements in a document with no :focus rules
// gets the affectedByFocus set on RenderStyle and not childrenOrSiblingsAffectedByFocus.
TEST_F(AffectedByFocusTest, UAUniversalFocusRule)
{
ElementResult expected[] = {
{ bodyTag, true, false },
{ divTag, true, false },
{ divTag, true, false },
{ divTag, true, false },
{ spanTag, true, false }
};
setHtmlInnerHTML("<body>"
"<div><div></div></div>"
"<div><span></span></div>"
"</body>");
checkElements(expected, sizeof(expected) / sizeof(ElementResult));
}
// ":focus div" will mark ascendants of all divs with childrenOrSiblingsAffectedByFocus.
TEST_F(AffectedByFocusTest, FocusedAscendant)
{
ElementResult expected[] = {
{ bodyTag, true, true },
{ divTag, true, true },
{ divTag, true, false },
{ divTag, true, false },
{ spanTag, true, false }
};
setHtmlInnerHTML("<head>"
"<style>:focus div { background-color: pink }</style>"
"</head>"
"<body>"
"<div><div></div></div>"
"<div><span></span></div>"
"</body>");
checkElements(expected, sizeof(expected) / sizeof(ElementResult));
}
// "body:focus div" will mark the body element with childrenOrSiblingsAffectedByFocus.
TEST_F(AffectedByFocusTest, FocusedAscendantWithType)
{
ElementResult expected[] = {
{ bodyTag, true, true },
{ divTag, true, false },
{ divTag, true, false },
{ divTag, true, false },
{ spanTag, true, false }
};
setHtmlInnerHTML("<head>"
"<style>body:focus div { background-color: pink }</style>"
"</head>"
"<body>"
"<div><div></div></div>"
"<div><span></span></div>"
"</body>");
checkElements(expected, sizeof(expected) / sizeof(ElementResult));
}
// ":not(body):focus div" should not mark the body element with childrenOrSiblingsAffectedByFocus.
// Note that currently ":focus:not(body)" does not do the same. Then the :focus is
// checked and the childrenOrSiblingsAffectedByFocus flag set before the negated type selector
// is found.
TEST_F(AffectedByFocusTest, FocusedAscendantWithNegatedType)
{
ElementResult expected[] = {
{ bodyTag, true, false },
{ divTag, true, true },
{ divTag, true, false },
{ divTag, true, false },
{ spanTag, true, false }
};
setHtmlInnerHTML("<head>"
"<style>:not(body):focus div { background-color: pink }</style>"
"</head>"
"<body>"
"<div><div></div></div>"
"<div><span></span></div>"
"</body>");
checkElements(expected, sizeof(expected) / sizeof(ElementResult));
}
// Checking current behavior for ":focus + div", but this is a BUG or at best
// sub-optimal. The focused element will also in this case get childrenOrSiblingsAffectedByFocus
// even if it's really a sibling. Effectively, the whole sub-tree of the focused
// element will have styles recalculated even though none of the children are
// affected. There are other mechanisms that makes sure the sibling also gets its
// styles recalculated.
TEST_F(AffectedByFocusTest, FocusedSibling)
{
ElementResult expected[] = {
{ bodyTag, true, false },
{ divTag, true, true },
{ spanTag, true, false },
{ divTag, true, false }
};
setHtmlInnerHTML("<head>"
"<style>:focus + div { background-color: pink }</style>"
"</head>"
"<body>"
"<div>"
" <span></span>"
"</div>"
"<div></div>"
"</body>");
checkElements(expected, sizeof(expected) / sizeof(ElementResult));
}
TEST_F(AffectedByFocusTest, AffectedByFocusUpdate)
{
// Check that when focussing the outer div in the document below, you only
// get a single element style recalc.
setHtmlInnerHTML("<style>:focus { border: 1px solid lime; }</style>"
"<div id=d tabIndex=1>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"</div>");
document().view()->updateLayoutAndStyleIfNeededRecursive();
unsigned startCount = document().styleEngine()->resolverAccessCount();
document().getElementById("d")->focus();
document().view()->updateLayoutAndStyleIfNeededRecursive();
unsigned accessCount = document().styleEngine()->resolverAccessCount() - startCount;
ASSERT_EQ(1U, accessCount);
}
TEST_F(AffectedByFocusTest, ChildrenOrSiblingsAffectedByFocusUpdate)
{
// Check that when focussing the outer div in the document below, you get a
// style recalc for the whole subtree.
setHtmlInnerHTML("<style>:focus div { border: 1px solid lime; }</style>"
"<div id=d tabIndex=1>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"</div>");
document().view()->updateLayoutAndStyleIfNeededRecursive();
unsigned startCount = document().styleEngine()->resolverAccessCount();
document().getElementById("d")->focus();
document().view()->updateLayoutAndStyleIfNeededRecursive();
unsigned accessCount = document().styleEngine()->resolverAccessCount() - startCount;
ASSERT_EQ(11U, accessCount);
}
TEST_F(AffectedByFocusTest, InvalidationSetFocusUpdate)
{
// Check that when focussing the outer div in the document below, you get a
// style recalc for the outer div and the class=a div only.
setHtmlInnerHTML("<style>:focus .a { border: 1px solid lime; }</style>"
"<div id=d tabIndex=1>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div class='a'></div>"
"</div>");
document().view()->updateLayoutAndStyleIfNeededRecursive();
unsigned startCount = document().styleEngine()->resolverAccessCount();
document().getElementById("d")->focus();
document().view()->updateLayoutAndStyleIfNeededRecursive();
unsigned accessCount = document().styleEngine()->resolverAccessCount() - startCount;
ASSERT_EQ(2U, accessCount);
}
TEST_F(AffectedByFocusTest, NoInvalidationSetFocusUpdate)
{
// Check that when focussing the outer div in the document below, you get a
// style recalc for the outer div only. The invalidation set for :focus will
// include 'a', but the id=d div should be affectedByFocus, not childrenOrSiblingsAffectedByFocus.
setHtmlInnerHTML("<style>#nomatch:focus .a { border: 1px solid lime; }</style>"
"<div id=d tabIndex=1>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div></div>"
"<div class='a'></div>"
"</div>");
document().view()->updateLayoutAndStyleIfNeededRecursive();
unsigned startCount = document().styleEngine()->resolverAccessCount();
document().getElementById("d")->focus();
document().view()->updateLayoutAndStyleIfNeededRecursive();
unsigned accessCount = document().styleEngine()->resolverAccessCount() - startCount;
ASSERT_EQ(1U, accessCount);
}
} // namespace
|
