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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/browser/accessibility/browser_accessibility_android.h" | 5 #include "content/browser/accessibility/browser_accessibility_android.h" |
6 | 6 |
7 #include "base/strings/utf_string_conversions.h" | 7 #include "base/strings/utf_string_conversions.h" |
8 #include "content/browser/accessibility/browser_accessibility_manager_android.h" | 8 #include "content/browser/accessibility/browser_accessibility_manager_android.h" |
9 #include "content/common/accessibility_messages.h" | 9 #include "content/common/accessibility_messages.h" |
10 #include "content/common/accessibility_node_data.h" | 10 #include "content/common/accessibility_node_data.h" |
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23 bool BrowserAccessibilityAndroid::IsNative() const { | 23 bool BrowserAccessibilityAndroid::IsNative() const { |
24 return true; | 24 return true; |
25 } | 25 } |
26 | 26 |
27 bool BrowserAccessibilityAndroid::PlatformIsLeaf() const { | 27 bool BrowserAccessibilityAndroid::PlatformIsLeaf() const { |
28 if (child_count() == 0) | 28 if (child_count() == 0) |
29 return true; | 29 return true; |
30 | 30 |
31 // Iframes are always allowed to contain children. | 31 // Iframes are always allowed to contain children. |
32 if (IsIframe() || | 32 if (IsIframe() || |
33 role() == WebKit::WebAXRoleRootWebArea || | 33 role() == blink::WebAXRoleRootWebArea || |
34 role() == WebKit::WebAXRoleWebArea) { | 34 role() == blink::WebAXRoleWebArea) { |
35 return false; | 35 return false; |
36 } | 36 } |
37 | 37 |
38 // If it has a focusable child, we definitely can't leave out children. | 38 // If it has a focusable child, we definitely can't leave out children. |
39 if (HasFocusableChild()) | 39 if (HasFocusableChild()) |
40 return false; | 40 return false; |
41 | 41 |
42 // Headings with text can drop their children. | 42 // Headings with text can drop their children. |
43 string16 name = GetText(); | 43 string16 name = GetText(); |
44 if (role() == WebKit::WebAXRoleHeading && !name.empty()) | 44 if (role() == blink::WebAXRoleHeading && !name.empty()) |
45 return true; | 45 return true; |
46 | 46 |
47 // Focusable nodes with text can drop their children. | 47 // Focusable nodes with text can drop their children. |
48 if (HasState(WebKit::WebAXStateFocusable) && !name.empty()) | 48 if (HasState(blink::WebAXStateFocusable) && !name.empty()) |
49 return true; | 49 return true; |
50 | 50 |
51 // Nodes with only static text as children can drop their children. | 51 // Nodes with only static text as children can drop their children. |
52 if (HasOnlyStaticTextChildren()) | 52 if (HasOnlyStaticTextChildren()) |
53 return true; | 53 return true; |
54 | 54 |
55 return BrowserAccessibility::PlatformIsLeaf(); | 55 return BrowserAccessibility::PlatformIsLeaf(); |
56 } | 56 } |
57 | 57 |
58 bool BrowserAccessibilityAndroid::IsCheckable() const { | 58 bool BrowserAccessibilityAndroid::IsCheckable() const { |
59 bool checkable = false; | 59 bool checkable = false; |
60 bool is_aria_pressed_defined; | 60 bool is_aria_pressed_defined; |
61 bool is_mixed; | 61 bool is_mixed; |
62 GetAriaTristate("aria-pressed", &is_aria_pressed_defined, &is_mixed); | 62 GetAriaTristate("aria-pressed", &is_aria_pressed_defined, &is_mixed); |
63 if (role() == WebKit::WebAXRoleCheckBox || | 63 if (role() == blink::WebAXRoleCheckBox || |
64 role() == WebKit::WebAXRoleRadioButton || | 64 role() == blink::WebAXRoleRadioButton || |
65 is_aria_pressed_defined) { | 65 is_aria_pressed_defined) { |
66 checkable = true; | 66 checkable = true; |
67 } | 67 } |
68 if (HasState(WebKit::WebAXStateChecked)) | 68 if (HasState(blink::WebAXStateChecked)) |
69 checkable = true; | 69 checkable = true; |
70 return checkable; | 70 return checkable; |
71 } | 71 } |
72 | 72 |
73 bool BrowserAccessibilityAndroid::IsChecked() const { | 73 bool BrowserAccessibilityAndroid::IsChecked() const { |
74 return HasState(WebKit::WebAXStateChecked); | 74 return HasState(blink::WebAXStateChecked); |
75 } | 75 } |
76 | 76 |
77 bool BrowserAccessibilityAndroid::IsClickable() const { | 77 bool BrowserAccessibilityAndroid::IsClickable() const { |
78 return (PlatformIsLeaf() && !GetText().empty()); | 78 return (PlatformIsLeaf() && !GetText().empty()); |
79 } | 79 } |
80 | 80 |
81 bool BrowserAccessibilityAndroid::IsEnabled() const { | 81 bool BrowserAccessibilityAndroid::IsEnabled() const { |
82 return HasState(WebKit::WebAXStateEnabled); | 82 return HasState(blink::WebAXStateEnabled); |
83 } | 83 } |
84 | 84 |
85 bool BrowserAccessibilityAndroid::IsFocusable() const { | 85 bool BrowserAccessibilityAndroid::IsFocusable() const { |
86 bool focusable = HasState(WebKit::WebAXStateFocusable); | 86 bool focusable = HasState(blink::WebAXStateFocusable); |
87 if (IsIframe() || | 87 if (IsIframe() || |
88 role() == WebKit::WebAXRoleWebArea) { | 88 role() == blink::WebAXRoleWebArea) { |
89 focusable = false; | 89 focusable = false; |
90 } | 90 } |
91 return focusable; | 91 return focusable; |
92 } | 92 } |
93 | 93 |
94 bool BrowserAccessibilityAndroid::IsFocused() const { | 94 bool BrowserAccessibilityAndroid::IsFocused() const { |
95 return manager()->GetFocus(manager()->GetRoot()) == this; | 95 return manager()->GetFocus(manager()->GetRoot()) == this; |
96 } | 96 } |
97 | 97 |
98 bool BrowserAccessibilityAndroid::IsPassword() const { | 98 bool BrowserAccessibilityAndroid::IsPassword() const { |
99 return HasState(WebKit::WebAXStateProtected); | 99 return HasState(blink::WebAXStateProtected); |
100 } | 100 } |
101 | 101 |
102 bool BrowserAccessibilityAndroid::IsScrollable() const { | 102 bool BrowserAccessibilityAndroid::IsScrollable() const { |
103 int dummy; | 103 int dummy; |
104 return GetIntAttribute(AccessibilityNodeData::ATTR_SCROLL_X_MAX, &dummy); | 104 return GetIntAttribute(AccessibilityNodeData::ATTR_SCROLL_X_MAX, &dummy); |
105 } | 105 } |
106 | 106 |
107 bool BrowserAccessibilityAndroid::IsSelected() const { | 107 bool BrowserAccessibilityAndroid::IsSelected() const { |
108 return HasState(WebKit::WebAXStateSelected); | 108 return HasState(blink::WebAXStateSelected); |
109 } | 109 } |
110 | 110 |
111 bool BrowserAccessibilityAndroid::IsVisibleToUser() const { | 111 bool BrowserAccessibilityAndroid::IsVisibleToUser() const { |
112 return !HasState(WebKit::WebAXStateInvisible); | 112 return !HasState(blink::WebAXStateInvisible); |
113 } | 113 } |
114 | 114 |
115 const char* BrowserAccessibilityAndroid::GetClassName() const { | 115 const char* BrowserAccessibilityAndroid::GetClassName() const { |
116 const char* class_name = NULL; | 116 const char* class_name = NULL; |
117 | 117 |
118 switch(role()) { | 118 switch(role()) { |
119 case WebKit::WebAXRoleEditableText: | 119 case blink::WebAXRoleEditableText: |
120 case WebKit::WebAXRoleSpinButton: | 120 case blink::WebAXRoleSpinButton: |
121 case WebKit::WebAXRoleTextArea: | 121 case blink::WebAXRoleTextArea: |
122 case WebKit::WebAXRoleTextField: | 122 case blink::WebAXRoleTextField: |
123 class_name = "android.widget.EditText"; | 123 class_name = "android.widget.EditText"; |
124 break; | 124 break; |
125 case WebKit::WebAXRoleSlider: | 125 case blink::WebAXRoleSlider: |
126 class_name = "android.widget.SeekBar"; | 126 class_name = "android.widget.SeekBar"; |
127 break; | 127 break; |
128 case WebKit::WebAXRoleComboBox: | 128 case blink::WebAXRoleComboBox: |
129 class_name = "android.widget.Spinner"; | 129 class_name = "android.widget.Spinner"; |
130 break; | 130 break; |
131 case WebKit::WebAXRoleButton: | 131 case blink::WebAXRoleButton: |
132 case WebKit::WebAXRoleMenuButton: | 132 case blink::WebAXRoleMenuButton: |
133 case WebKit::WebAXRolePopUpButton: | 133 case blink::WebAXRolePopUpButton: |
134 class_name = "android.widget.Button"; | 134 class_name = "android.widget.Button"; |
135 break; | 135 break; |
136 case WebKit::WebAXRoleCheckBox: | 136 case blink::WebAXRoleCheckBox: |
137 class_name = "android.widget.CheckBox"; | 137 class_name = "android.widget.CheckBox"; |
138 break; | 138 break; |
139 case WebKit::WebAXRoleRadioButton: | 139 case blink::WebAXRoleRadioButton: |
140 class_name = "android.widget.RadioButton"; | 140 class_name = "android.widget.RadioButton"; |
141 break; | 141 break; |
142 case WebKit::WebAXRoleToggleButton: | 142 case blink::WebAXRoleToggleButton: |
143 class_name = "android.widget.ToggleButton"; | 143 class_name = "android.widget.ToggleButton"; |
144 break; | 144 break; |
145 case WebKit::WebAXRoleCanvas: | 145 case blink::WebAXRoleCanvas: |
146 case WebKit::WebAXRoleImage: | 146 case blink::WebAXRoleImage: |
147 class_name = "android.widget.Image"; | 147 class_name = "android.widget.Image"; |
148 break; | 148 break; |
149 case WebKit::WebAXRoleProgressIndicator: | 149 case blink::WebAXRoleProgressIndicator: |
150 class_name = "android.widget.ProgressBar"; | 150 class_name = "android.widget.ProgressBar"; |
151 break; | 151 break; |
152 case WebKit::WebAXRoleTabList: | 152 case blink::WebAXRoleTabList: |
153 class_name = "android.widget.TabWidget"; | 153 class_name = "android.widget.TabWidget"; |
154 break; | 154 break; |
155 case WebKit::WebAXRoleGrid: | 155 case blink::WebAXRoleGrid: |
156 case WebKit::WebAXRoleTable: | 156 case blink::WebAXRoleTable: |
157 class_name = "android.widget.GridView"; | 157 class_name = "android.widget.GridView"; |
158 break; | 158 break; |
159 case WebKit::WebAXRoleList: | 159 case blink::WebAXRoleList: |
160 case WebKit::WebAXRoleListBox: | 160 case blink::WebAXRoleListBox: |
161 class_name = "android.widget.ListView"; | 161 class_name = "android.widget.ListView"; |
162 break; | 162 break; |
163 default: | 163 default: |
164 class_name = "android.view.View"; | 164 class_name = "android.view.View"; |
165 break; | 165 break; |
166 } | 166 } |
167 | 167 |
168 return class_name; | 168 return class_name; |
169 } | 169 } |
170 | 170 |
171 string16 BrowserAccessibilityAndroid::GetText() const { | 171 string16 BrowserAccessibilityAndroid::GetText() const { |
172 if (IsIframe() || | 172 if (IsIframe() || |
173 role() == WebKit::WebAXRoleWebArea) { | 173 role() == blink::WebAXRoleWebArea) { |
174 return string16(); | 174 return string16(); |
175 } | 175 } |
176 | 176 |
177 string16 description = GetString16Attribute( | 177 string16 description = GetString16Attribute( |
178 AccessibilityNodeData::ATTR_DESCRIPTION); | 178 AccessibilityNodeData::ATTR_DESCRIPTION); |
179 string16 text; | 179 string16 text; |
180 if (!name().empty()) | 180 if (!name().empty()) |
181 text = base::UTF8ToUTF16(name()); | 181 text = base::UTF8ToUTF16(name()); |
182 else if (!description.empty()) | 182 else if (!description.empty()) |
183 text = description; | 183 text = description; |
184 else if (!value().empty()) | 184 else if (!value().empty()) |
185 text = base::UTF8ToUTF16(value()); | 185 text = base::UTF8ToUTF16(value()); |
186 | 186 |
187 if (text.empty() && HasOnlyStaticTextChildren()) { | 187 if (text.empty() && HasOnlyStaticTextChildren()) { |
188 for (uint32 i = 0; i < PlatformChildCount(); i++) { | 188 for (uint32 i = 0; i < PlatformChildCount(); i++) { |
189 BrowserAccessibility* child = PlatformGetChild(i); | 189 BrowserAccessibility* child = PlatformGetChild(i); |
190 text += static_cast<BrowserAccessibilityAndroid*>(child)->GetText(); | 190 text += static_cast<BrowserAccessibilityAndroid*>(child)->GetText(); |
191 } | 191 } |
192 } | 192 } |
193 | 193 |
194 switch(role()) { | 194 switch(role()) { |
195 case WebKit::WebAXRoleImageMapLink: | 195 case blink::WebAXRoleImageMapLink: |
196 case WebKit::WebAXRoleLink: | 196 case blink::WebAXRoleLink: |
197 if (!text.empty()) | 197 if (!text.empty()) |
198 text += ASCIIToUTF16(" "); | 198 text += ASCIIToUTF16(" "); |
199 text += ASCIIToUTF16("Link"); | 199 text += ASCIIToUTF16("Link"); |
200 break; | 200 break; |
201 case WebKit::WebAXRoleHeading: | 201 case blink::WebAXRoleHeading: |
202 // Only append "heading" if this node already has text. | 202 // Only append "heading" if this node already has text. |
203 if (!text.empty()) | 203 if (!text.empty()) |
204 text += ASCIIToUTF16(" Heading"); | 204 text += ASCIIToUTF16(" Heading"); |
205 break; | 205 break; |
206 } | 206 } |
207 | 207 |
208 return text; | 208 return text; |
209 } | 209 } |
210 | 210 |
211 int BrowserAccessibilityAndroid::GetItemIndex() const { | 211 int BrowserAccessibilityAndroid::GetItemIndex() const { |
212 int index = 0; | 212 int index = 0; |
213 switch(role()) { | 213 switch(role()) { |
214 case WebKit::WebAXRoleListItem: | 214 case blink::WebAXRoleListItem: |
215 case WebKit::WebAXRoleListBoxOption: | 215 case blink::WebAXRoleListBoxOption: |
216 index = index_in_parent(); | 216 index = index_in_parent(); |
217 break; | 217 break; |
218 case WebKit::WebAXRoleSlider: | 218 case blink::WebAXRoleSlider: |
219 case WebKit::WebAXRoleProgressIndicator: { | 219 case blink::WebAXRoleProgressIndicator: { |
220 float value_for_range; | 220 float value_for_range; |
221 if (GetFloatAttribute( | 221 if (GetFloatAttribute( |
222 AccessibilityNodeData::ATTR_VALUE_FOR_RANGE, &value_for_range)) { | 222 AccessibilityNodeData::ATTR_VALUE_FOR_RANGE, &value_for_range)) { |
223 index = static_cast<int>(value_for_range); | 223 index = static_cast<int>(value_for_range); |
224 } | 224 } |
225 break; | 225 break; |
226 } | 226 } |
227 } | 227 } |
228 return index; | 228 return index; |
229 } | 229 } |
230 | 230 |
231 int BrowserAccessibilityAndroid::GetItemCount() const { | 231 int BrowserAccessibilityAndroid::GetItemCount() const { |
232 int count = 0; | 232 int count = 0; |
233 switch(role()) { | 233 switch(role()) { |
234 case WebKit::WebAXRoleList: | 234 case blink::WebAXRoleList: |
235 case WebKit::WebAXRoleListBox: | 235 case blink::WebAXRoleListBox: |
236 count = PlatformChildCount(); | 236 count = PlatformChildCount(); |
237 break; | 237 break; |
238 case WebKit::WebAXRoleSlider: | 238 case blink::WebAXRoleSlider: |
239 case WebKit::WebAXRoleProgressIndicator: { | 239 case blink::WebAXRoleProgressIndicator: { |
240 float max_value_for_range; | 240 float max_value_for_range; |
241 if (GetFloatAttribute(AccessibilityNodeData::ATTR_MAX_VALUE_FOR_RANGE, | 241 if (GetFloatAttribute(AccessibilityNodeData::ATTR_MAX_VALUE_FOR_RANGE, |
242 &max_value_for_range)) { | 242 &max_value_for_range)) { |
243 count = static_cast<int>(max_value_for_range); | 243 count = static_cast<int>(max_value_for_range); |
244 } | 244 } |
245 break; | 245 break; |
246 } | 246 } |
247 } | 247 } |
248 return count; | 248 return count; |
249 } | 249 } |
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334 return sel_end; | 334 return sel_end; |
335 } | 335 } |
336 | 336 |
337 int BrowserAccessibilityAndroid::GetEditableTextLength() const { | 337 int BrowserAccessibilityAndroid::GetEditableTextLength() const { |
338 return value().length(); | 338 return value().length(); |
339 } | 339 } |
340 | 340 |
341 bool BrowserAccessibilityAndroid::HasFocusableChild() const { | 341 bool BrowserAccessibilityAndroid::HasFocusableChild() const { |
342 for (uint32 i = 0; i < PlatformChildCount(); i++) { | 342 for (uint32 i = 0; i < PlatformChildCount(); i++) { |
343 BrowserAccessibility* child = PlatformGetChild(i); | 343 BrowserAccessibility* child = PlatformGetChild(i); |
344 if (child->HasState(WebKit::WebAXStateFocusable)) | 344 if (child->HasState(blink::WebAXStateFocusable)) |
345 return true; | 345 return true; |
346 if (static_cast<BrowserAccessibilityAndroid*>(child)->HasFocusableChild()) | 346 if (static_cast<BrowserAccessibilityAndroid*>(child)->HasFocusableChild()) |
347 return true; | 347 return true; |
348 } | 348 } |
349 return false; | 349 return false; |
350 } | 350 } |
351 | 351 |
352 bool BrowserAccessibilityAndroid::HasOnlyStaticTextChildren() const { | 352 bool BrowserAccessibilityAndroid::HasOnlyStaticTextChildren() const { |
353 for (uint32 i = 0; i < PlatformChildCount(); i++) { | 353 for (uint32 i = 0; i < PlatformChildCount(); i++) { |
354 BrowserAccessibility* child = PlatformGetChild(i); | 354 BrowserAccessibility* child = PlatformGetChild(i); |
355 if (child->role() != WebKit::WebAXRoleStaticText) | 355 if (child->role() != blink::WebAXRoleStaticText) |
356 return false; | 356 return false; |
357 } | 357 } |
358 return true; | 358 return true; |
359 } | 359 } |
360 | 360 |
361 bool BrowserAccessibilityAndroid::IsIframe() const { | 361 bool BrowserAccessibilityAndroid::IsIframe() const { |
362 string16 html_tag = GetString16Attribute( | 362 string16 html_tag = GetString16Attribute( |
363 AccessibilityNodeData::ATTR_HTML_TAG); | 363 AccessibilityNodeData::ATTR_HTML_TAG); |
364 return html_tag == ASCIIToUTF16("iframe"); | 364 return html_tag == ASCIIToUTF16("iframe"); |
365 } | 365 } |
366 | 366 |
367 void BrowserAccessibilityAndroid::PostInitialize() { | 367 void BrowserAccessibilityAndroid::PostInitialize() { |
368 BrowserAccessibility::PostInitialize(); | 368 BrowserAccessibility::PostInitialize(); |
369 | 369 |
370 if (IsEditableText()) { | 370 if (IsEditableText()) { |
371 if (base::UTF8ToUTF16(value_) != new_value_) { | 371 if (base::UTF8ToUTF16(value_) != new_value_) { |
372 old_value_ = new_value_; | 372 old_value_ = new_value_; |
373 new_value_ = base::UTF8ToUTF16(value_); | 373 new_value_ = base::UTF8ToUTF16(value_); |
374 } | 374 } |
375 } | 375 } |
376 | 376 |
377 if (role_ == WebKit::WebAXRoleAlert && first_time_) | 377 if (role_ == blink::WebAXRoleAlert && first_time_) |
378 manager_->NotifyAccessibilityEvent(WebKit::WebAXEventAlert, this); | 378 manager_->NotifyAccessibilityEvent(blink::WebAXEventAlert, this); |
379 | 379 |
380 string16 live; | 380 string16 live; |
381 if (GetString16Attribute( | 381 if (GetString16Attribute( |
382 AccessibilityNodeData::ATTR_CONTAINER_LIVE_STATUS, &live)) { | 382 AccessibilityNodeData::ATTR_CONTAINER_LIVE_STATUS, &live)) { |
383 NotifyLiveRegionUpdate(live); | 383 NotifyLiveRegionUpdate(live); |
384 } | 384 } |
385 | 385 |
386 first_time_ = false; | 386 first_time_ = false; |
387 } | 387 } |
388 | 388 |
389 void BrowserAccessibilityAndroid::NotifyLiveRegionUpdate(string16& aria_live) { | 389 void BrowserAccessibilityAndroid::NotifyLiveRegionUpdate(string16& aria_live) { |
390 if (!EqualsASCII(aria_live, aria_strings::kAriaLivePolite) && | 390 if (!EqualsASCII(aria_live, aria_strings::kAriaLivePolite) && |
391 !EqualsASCII(aria_live, aria_strings::kAriaLiveAssertive)) | 391 !EqualsASCII(aria_live, aria_strings::kAriaLiveAssertive)) |
392 return; | 392 return; |
393 | 393 |
394 string16 text = GetText(); | 394 string16 text = GetText(); |
395 if (cached_text_ != text) { | 395 if (cached_text_ != text) { |
396 if (!text.empty()) { | 396 if (!text.empty()) { |
397 manager_->NotifyAccessibilityEvent(WebKit::WebAXEventShow, | 397 manager_->NotifyAccessibilityEvent(blink::WebAXEventShow, |
398 this); | 398 this); |
399 } | 399 } |
400 cached_text_ = text; | 400 cached_text_ = text; |
401 } | 401 } |
402 } | 402 } |
403 | 403 |
404 } // namespace content | 404 } // namespace content |
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