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1 /* | 1 /* |
2 * Copyright (C) 2012, Google Inc. All rights reserved. | 2 * Copyright (C) 2012, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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1174 continue; | 1174 continue; |
1175 } | 1175 } |
1176 } | 1176 } |
1177 | 1177 |
1178 builder.append(child->textUnderElement()); | 1178 builder.append(child->textUnderElement()); |
1179 } | 1179 } |
1180 | 1180 |
1181 return builder.toString(); | 1181 return builder.toString(); |
1182 } | 1182 } |
1183 | 1183 |
1184 AXObject* AXNodeObject::searchAXObjectFromChild(const HTMLQualifiedName& node) c onst | |
dmazzoni
2014/11/12 06:03:03
The argument name should be tagName instead of nod
je_julie(Not used)
2014/11/12 13:07:04
You're right. I updated the parameter name.
| |
1185 { | |
1186 for (AXObject* child = firstChild(); child; child = child->nextSibling()) { | |
1187 Node* childNode = child->node(); | |
1188 if (childNode && childNode->hasTagName(node)) | |
1189 return child; | |
1190 } | |
1191 return 0; | |
1192 } | |
1193 | |
1184 String AXNodeObject::accessibilityDescription() const | 1194 String AXNodeObject::accessibilityDescription() const |
1185 { | 1195 { |
1186 // Static text should not have a description, it should only have a stringVa lue. | 1196 // Static text should not have a description, it should only have a stringVa lue. |
1187 if (roleValue() == StaticTextRole) | 1197 if (roleValue() == StaticTextRole) |
1188 return String(); | 1198 return String(); |
1189 | 1199 |
1190 String ariaDescription = ariaAccessibilityDescription(); | 1200 String ariaDescription = ariaAccessibilityDescription(); |
1191 if (!ariaDescription.isEmpty()) | 1201 if (!ariaDescription.isEmpty()) |
1192 return ariaDescription; | 1202 return ariaDescription; |
1193 | 1203 |
1194 if (isImage() || isInputImage() || isNativeImage() || isCanvas()) { | 1204 if (isImage() || isInputImage() || isNativeImage() || isCanvas()) { |
1195 // Images should use alt as long as the attribute is present, even if em pty. | 1205 // Images should use alt as long as the attribute is present, even if em pty. |
1196 // Otherwise, it should fallback to other methods, like the title attrib ute. | 1206 // Otherwise, it should fallback to other methods, like the title attrib ute. |
1197 const AtomicString& alt = getAttribute(altAttr); | 1207 const AtomicString& alt = getAttribute(altAttr); |
1198 if (!alt.isNull()) | 1208 if (!alt.isNull()) |
1199 return alt; | 1209 return alt; |
1200 } | 1210 } |
1201 | 1211 |
1202 // An element's descriptive text is comprised of title() (what's visible on the screen) and accessibilityDescription() (other descriptive text). | 1212 // An element's descriptive text is comprised of title() (what's visible on the screen) and accessibilityDescription() (other descriptive text). |
1203 // Both are used to generate what a screen reader speaks. | 1213 // Both are used to generate what a screen reader speaks. |
1204 // If this point is reached (i.e. there's no accessibilityDescription) and t here's no title(), we should fallback to using the title attribute. | 1214 // If this point is reached (i.e. there's no accessibilityDescription) and t here's no title(), we should fallback to using the title attribute. |
1205 // The title attribute is normally used as help text (because it is a toolti p), but if there is nothing else available, this should be used (according to AR IA). | 1215 // The title attribute is normally used as help text (because it is a toolti p), but if there is nothing else available, this should be used (according to AR IA). |
1206 if (title().isEmpty()) | 1216 if (title().isEmpty()) |
1207 return getAttribute(titleAttr); | 1217 return getAttribute(titleAttr); |
1208 | 1218 |
1219 if (roleValue() == FigureRole) { | |
1220 AXObject* figcaption = searchAXObjectFromChild(figcaptionTag); | |
1221 if (figcaption) | |
1222 return figcaption->accessibilityDescription(); | |
1223 } | |
1224 | |
1209 return String(); | 1225 return String(); |
1210 } | 1226 } |
1211 | 1227 |
1212 String AXNodeObject::title() const | 1228 String AXNodeObject::title() const |
1213 { | 1229 { |
1214 Node* node = this->node(); | 1230 Node* node = this->node(); |
1215 if (!node) | 1231 if (!node) |
1216 return String(); | 1232 return String(); |
1217 | 1233 |
1218 bool isInputElement = isHTMLInputElement(*node); | 1234 bool isInputElement = isHTMLInputElement(*node); |
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1244 case MenuButtonRole: | 1260 case MenuButtonRole: |
1245 case MenuItemRole: | 1261 case MenuItemRole: |
1246 case MenuItemCheckBoxRole: | 1262 case MenuItemCheckBoxRole: |
1247 case MenuItemRadioRole: | 1263 case MenuItemRadioRole: |
1248 case RadioButtonRole: | 1264 case RadioButtonRole: |
1249 case TabRole: | 1265 case TabRole: |
1250 return textUnderElement(); | 1266 return textUnderElement(); |
1251 // SVGRoots should not use the text under itself as a title. That could incl ude the text of objects like <text>. | 1267 // SVGRoots should not use the text under itself as a title. That could incl ude the text of objects like <text>. |
1252 case SVGRootRole: | 1268 case SVGRootRole: |
1253 return String(); | 1269 return String(); |
1270 case FigureRole: { | |
1271 AXObject* figcaption = searchAXObjectFromChild(figcaptionTag); | |
1272 if (figcaption) | |
1273 return figcaption->textUnderElement(); | |
1274 } | |
1254 default: | 1275 default: |
1255 break; | 1276 break; |
1256 } | 1277 } |
1257 | 1278 |
1258 if (isHeading() || isLink()) | 1279 if (isHeading() || isLink()) |
1259 return textUnderElement(); | 1280 return textUnderElement(); |
1260 | 1281 |
1261 // If it's focusable but it's not content editable or a known control type, then it will appear to | 1282 // If it's focusable but it's not content editable or a known control type, then it will appear to |
1262 // the user as a single atomic object, so we should use its text as the defa ult title. | 1283 // the user as a single atomic object, so we should use its text as the defa ult title. |
1263 if (isGenericFocusableElement()) | 1284 if (isGenericFocusableElement()) |
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1774 float range = maxValueForRange() - minValueForRange(); | 1795 float range = maxValueForRange() - minValueForRange(); |
1775 float value = valueForRange(); | 1796 float value = valueForRange(); |
1776 | 1797 |
1777 value += range * (percentChange / 100); | 1798 value += range * (percentChange / 100); |
1778 setValue(String::number(value)); | 1799 setValue(String::number(value)); |
1779 | 1800 |
1780 axObjectCache()->postNotification(node(), AXObjectCacheImpl::AXValueChanged, true); | 1801 axObjectCache()->postNotification(node(), AXObjectCacheImpl::AXValueChanged, true); |
1781 } | 1802 } |
1782 | 1803 |
1783 } // namespace blink | 1804 } // namespace blink |
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