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
|
// Copyright (c) 2012 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.
#ifndef CONTENT_COMMON_ACCESSIBILITY_NODE_DATA_H_
#define CONTENT_COMMON_ACCESSIBILITY_NODE_DATA_H_
#include <map>
#include <string>
#include <vector>
#include "base/string16.h"
#include "content/common/content_export.h"
#include "ui/gfx/rect.h"
namespace content {
// A compact representation of the accessibility information for a
// single web object, in a form that can be serialized and sent from
// the renderer process to the browser process.
struct CONTENT_EXPORT AccessibilityNodeData {
// An enumeration of accessibility roles.
enum Role {
ROLE_UNKNOWN = 0,
// Used by Chromium to distinguish between the root of the tree
// for this page, and a web area for a frame within this page.
ROLE_ROOT_WEB_AREA,
// These roles all directly correspond to WebKit accessibility roles,
// keep these alphabetical.
ROLE_ALERT,
ROLE_ALERT_DIALOG,
ROLE_ANNOTATION,
ROLE_APPLICATION,
ROLE_ARTICLE,
ROLE_BROWSER,
ROLE_BUSY_INDICATOR,
ROLE_BUTTON,
ROLE_CANVAS,
ROLE_CANVAS_WITH_FALLBACK_CONTENT,
ROLE_CELL,
ROLE_CHECKBOX,
ROLE_COLOR_WELL,
ROLE_COLUMN,
ROLE_COLUMN_HEADER,
ROLE_COMBO_BOX,
ROLE_DEFINITION_LIST_DEFINITION,
ROLE_DEFINITION_LIST_TERM,
ROLE_DIALOG,
ROLE_DIRECTORY,
ROLE_DISCLOSURE_TRIANGLE,
ROLE_DIV,
ROLE_DOCUMENT,
ROLE_DRAWER,
ROLE_EDITABLE_TEXT,
ROLE_FOOTER,
ROLE_FORM,
ROLE_GRID,
ROLE_GROUP,
ROLE_GROW_AREA,
ROLE_HEADING,
ROLE_HELP_TAG,
ROLE_HORIZONTAL_RULE,
ROLE_IGNORED,
ROLE_IMAGE,
ROLE_IMAGE_MAP,
ROLE_IMAGE_MAP_LINK,
ROLE_INCREMENTOR,
ROLE_LABEL,
ROLE_LANDMARK_APPLICATION,
ROLE_LANDMARK_BANNER,
ROLE_LANDMARK_COMPLEMENTARY,
ROLE_LANDMARK_CONTENTINFO,
ROLE_LANDMARK_MAIN,
ROLE_LANDMARK_NAVIGATION,
ROLE_LANDMARK_SEARCH,
ROLE_LINK,
ROLE_LIST,
ROLE_LISTBOX,
ROLE_LISTBOX_OPTION,
ROLE_LIST_ITEM,
ROLE_LIST_MARKER,
ROLE_LOG,
ROLE_MARQUEE,
ROLE_MATH,
ROLE_MATTE,
ROLE_MENU,
ROLE_MENU_BAR,
ROLE_MENU_ITEM,
ROLE_MENU_BUTTON,
ROLE_MENU_LIST_OPTION,
ROLE_MENU_LIST_POPUP,
ROLE_NOTE,
ROLE_OUTLINE,
ROLE_PARAGRAPH,
ROLE_POPUP_BUTTON,
ROLE_PRESENTATIONAL,
ROLE_PROGRESS_INDICATOR,
ROLE_RADIO_BUTTON,
ROLE_RADIO_GROUP,
ROLE_REGION,
ROLE_ROW,
ROLE_ROW_HEADER,
ROLE_RULER,
ROLE_RULER_MARKER,
ROLE_SCROLLAREA,
ROLE_SCROLLBAR,
ROLE_SHEET,
ROLE_SLIDER,
ROLE_SLIDER_THUMB,
ROLE_SPIN_BUTTON,
ROLE_SPIN_BUTTON_PART,
ROLE_SPLITTER,
ROLE_SPLIT_GROUP,
ROLE_STATIC_TEXT,
ROLE_STATUS,
ROLE_SYSTEM_WIDE,
ROLE_TAB,
ROLE_TABLE,
ROLE_TABLE_HEADER_CONTAINER,
ROLE_TAB_GROUP_UNUSED, // WebKit doesn't use (uses ROLE_TAB_LIST)
ROLE_TAB_LIST,
ROLE_TAB_PANEL,
ROLE_TEXTAREA,
ROLE_TEXT_FIELD,
ROLE_TIMER,
ROLE_TOGGLE_BUTTON,
ROLE_TOOLBAR,
ROLE_TOOLTIP,
ROLE_TREE,
ROLE_TREE_GRID,
ROLE_TREE_ITEM,
ROLE_VALUE_INDICATOR,
ROLE_WEBCORE_LINK,
ROLE_WEB_AREA,
ROLE_WINDOW,
NUM_ROLES
};
// An alphabetical enumeration of accessibility states.
// A state bitmask is formed by shifting 1 to the left by each state,
// for example:
// int mask = (1 << STATE_CHECKED) | (1 << STATE_FOCUSED);
enum State {
STATE_BUSY,
STATE_CHECKED,
STATE_COLLAPSED,
STATE_EXPANDED,
STATE_FOCUSABLE,
STATE_FOCUSED,
STATE_HASPOPUP,
STATE_HOTTRACKED,
STATE_INDETERMINATE,
STATE_INVISIBLE,
STATE_LINKED,
STATE_MULTISELECTABLE,
STATE_OFFSCREEN,
STATE_PRESSED,
STATE_PROTECTED,
STATE_READONLY,
STATE_REQUIRED,
STATE_SELECTABLE,
STATE_SELECTED,
STATE_TRAVERSED,
STATE_UNAVAILABLE,
STATE_VERTICAL,
STATE_VISITED,
NUM_STATES
};
COMPILE_ASSERT(NUM_STATES <= 31, state_enum_not_too_large);
// Additional optional attributes that can be optionally attached to
// a node.
enum StringAttribute {
// Document attributes.
ATTR_DOC_URL,
ATTR_DOC_TITLE,
ATTR_DOC_MIMETYPE,
ATTR_DOC_DOCTYPE,
// Attributes that could apply to any node.
ATTR_ACCESS_KEY,
ATTR_ACTION,
ATTR_CONTAINER_LIVE_RELEVANT,
ATTR_CONTAINER_LIVE_STATUS,
ATTR_DESCRIPTION,
ATTR_DISPLAY,
ATTR_HELP,
ATTR_HTML_TAG,
ATTR_LIVE_RELEVANT,
ATTR_LIVE_STATUS,
ATTR_ROLE,
ATTR_SHORTCUT,
ATTR_URL,
};
enum IntAttribute {
// Scrollable container attributes.
ATTR_SCROLL_X,
ATTR_SCROLL_X_MIN,
ATTR_SCROLL_X_MAX,
ATTR_SCROLL_Y,
ATTR_SCROLL_Y_MIN,
ATTR_SCROLL_Y_MAX,
// Editable text attributes.
ATTR_TEXT_SEL_START,
ATTR_TEXT_SEL_END,
// Table attributes.
ATTR_TABLE_ROW_COUNT,
ATTR_TABLE_COLUMN_COUNT,
// Table cell attributes.
ATTR_TABLE_CELL_COLUMN_INDEX,
ATTR_TABLE_CELL_COLUMN_SPAN,
ATTR_TABLE_CELL_ROW_INDEX,
ATTR_TABLE_CELL_ROW_SPAN,
// Tree control attributes.
ATTR_HIERARCHICAL_LEVEL,
// Relationships between this element and other elements.
ATTR_TITLE_UI_ELEMENT,
};
enum FloatAttribute {
// Document attributes.
ATTR_DOC_LOADING_PROGRESS,
// Range attributes.
ATTR_VALUE_FOR_RANGE,
ATTR_MIN_VALUE_FOR_RANGE,
ATTR_MAX_VALUE_FOR_RANGE,
};
enum BoolAttribute {
// Document attributes.
ATTR_DOC_LOADED,
// True if a checkbox or radio button is in the "mixed" state.
ATTR_BUTTON_MIXED,
// Live region attributes.
ATTR_CONTAINER_LIVE_ATOMIC,
ATTR_CONTAINER_LIVE_BUSY,
ATTR_LIVE_ATOMIC,
ATTR_LIVE_BUSY,
// ARIA readonly flag.
ATTR_ARIA_READONLY,
// Writeable attributes
ATTR_CAN_SET_VALUE,
};
AccessibilityNodeData();
~AccessibilityNodeData();
#ifndef NDEBUG
std::string DebugString(bool recursive) const;
#endif
// This is a simple serializable struct. All member variables should be
// public and copyable.
int32 id;
string16 name;
string16 value;
Role role;
uint32 state;
gfx::Rect location;
std::map<StringAttribute, string16> string_attributes;
std::map<IntAttribute, int32> int_attributes;
std::map<FloatAttribute, float> float_attributes;
std::map<BoolAttribute, bool> bool_attributes;
std::vector<AccessibilityNodeData> children;
std::vector<int32> indirect_child_ids;
std::vector<std::pair<string16, string16> > html_attributes;
std::vector<int32> line_breaks;
// For a table, the cell ids in row-major order, with duplicate entries
// when there's a rowspan or colspan, and with -1 for missing cells.
// There are always exactly rows * columns entries.
std::vector<int32> cell_ids;
// For a table, the unique cell ids in row-major order of their first
// occurrence.
std::vector<int32> unique_cell_ids;
};
} // namespace content
#endif // CONTENT_COMMON_ACCESSIBILITY_NODE_DATA_H_
|