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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 | 10 |
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273 | 273 |
274 base::string16 BrowserAccessibilityAndroid::GetText() const { | 274 base::string16 BrowserAccessibilityAndroid::GetText() const { |
275 if (IsIframe() || | 275 if (IsIframe() || |
276 GetRole() == ui::AX_ROLE_WEB_AREA) { | 276 GetRole() == ui::AX_ROLE_WEB_AREA) { |
277 return base::string16(); | 277 return base::string16(); |
278 } | 278 } |
279 | 279 |
280 // See comment in browser_accessibility_win.cc for details. | 280 // See comment in browser_accessibility_win.cc for details. |
281 // The difference here is that we can only expose one accessible | 281 // The difference here is that we can only expose one accessible |
282 // name on Android, not 2 or 3 like on Windows or Mac. | 282 // name on Android, not 2 or 3 like on Windows or Mac. |
283 // | 283 |
284 // The basic rule is: prefer description (aria-labelledby or aria-label), | 284 // First, always return the |value| attribute if this is an |
285 // then help (title), then name (inner text), then value (control value). | 285 // accessible text. |
286 // However, if title_elem_id is set, that means there's a label element | 286 if (!value().empty() && |
| 287 (GetRole() == ui::AX_ROLE_EDITABLE_TEXT || |
| 288 GetRole() == ui::AX_ROLE_TEXT_AREA || |
| 289 GetRole() == ui::AX_ROLE_TEXT_FIELD || |
| 290 HasState(ui::AX_STATE_EDITABLE))) { |
| 291 return base::UTF8ToUTF16(value()); |
| 292 } |
| 293 |
| 294 // If there's no text value, the basic rule is: prefer description |
| 295 // (aria-labelledby or aria-label), then help (title), then name |
| 296 // (inner text), then value (control value). However, if |
| 297 // title_elem_id is set, that means there's a label element |
287 // supplying the name and then name takes precedence over help. | 298 // supplying the name and then name takes precedence over help. |
288 // TODO(dmazzoni): clean this up by providing more granular labels in | 299 // TODO(dmazzoni): clean this up by providing more granular labels in |
289 // Blink, making the platform-specific mapping to accessible text simpler. | 300 // Blink, making the platform-specific mapping to accessible text simpler. |
290 base::string16 description = GetString16Attribute(ui::AX_ATTR_DESCRIPTION); | 301 base::string16 description = GetString16Attribute(ui::AX_ATTR_DESCRIPTION); |
291 base::string16 help = GetString16Attribute(ui::AX_ATTR_HELP); | 302 base::string16 help = GetString16Attribute(ui::AX_ATTR_HELP); |
292 int title_elem_id = GetIntAttribute( | 303 int title_elem_id = GetIntAttribute( |
293 ui::AX_ATTR_TITLE_UI_ELEMENT); | 304 ui::AX_ATTR_TITLE_UI_ELEMENT); |
294 base::string16 text; | 305 base::string16 text; |
295 if (!description.empty()) | 306 if (!description.empty()) |
296 text = description; | 307 text = description; |
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646 int BrowserAccessibilityAndroid::CountChildrenWithRole(ui::AXRole role) const { | 657 int BrowserAccessibilityAndroid::CountChildrenWithRole(ui::AXRole role) const { |
647 int count = 0; | 658 int count = 0; |
648 for (uint32 i = 0; i < PlatformChildCount(); i++) { | 659 for (uint32 i = 0; i < PlatformChildCount(); i++) { |
649 if (PlatformGetChild(i)->GetRole() == role) | 660 if (PlatformGetChild(i)->GetRole() == role) |
650 count++; | 661 count++; |
651 } | 662 } |
652 return count; | 663 return count; |
653 } | 664 } |
654 | 665 |
655 } // namespace content | 666 } // namespace content |
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