Make use of new AX name calc in Chromium.

content/browser/accessibility/browser_accessibility_android.cc

 // Copyright 2013 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 "content/browser/accessibility/browser_accessibility_android.h"
 
 #include "base/i18n/break_iterator.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 297 matching lines @@
 
   return class_name;
 }
 
 base::string16 BrowserAccessibilityAndroid::GetText() const {
   if (IsIframe() ||
       GetRole() == ui::AX_ROLE_WEB_AREA) {
     return base::string16();
   }
 
-  // See comment in browser_accessibility_win.cc for details.
-  // The difference here is that we can only expose one accessible
-  // name on Android, not 2 or 3 like on Windows or Mac.
+  // We can only expose one accessible name on Android,
+  // not 2 or 3 like on Windows or Mac.
 
   // First, always return the |value| attribute if this is an
   // input field.
   base::string16 value = GetString16Attribute(ui::AX_ATTR_VALUE);
   if (!value.empty()) {
     if (HasState(ui::AX_STATE_EDITABLE))
       return value;
 
     switch (GetRole()) {
       case ui::AX_ROLE_COMBO_BOX:
       case ui::AX_ROLE_POP_UP_BUTTON:
       case ui::AX_ROLE_TEXT_FIELD:
         return value;
     }
   }
 
   // For color wells, the color is stored in separate attributes.
   // Perhaps we could return color names in the future?
   if (GetRole() == ui::AX_ROLE_COLOR_WELL) {
     int color = GetIntAttribute(ui::AX_ATTR_COLOR_VALUE);
     int red = (color >> 16) & 0xFF;
     int green = (color >> 8) & 0xFF;
     int blue = color & 0xFF;
     return base::UTF8ToUTF16(
         base::StringPrintf("#%02X%02X%02X", red, green, blue));
   }
 
-  // Always prefer visible text if this is a link. Sites sometimes add
-  // a "title" attribute to a link with more information, but we can't
-  // lose the link text.
-  base::string16 name = GetString16Attribute(ui::AX_ATTR_NAME);
-  if (!name.empty() && GetRole() == ui::AX_ROLE_LINK)
-    return name;
-
-  // If there's no text value, the basic rule is: prefer description
-  // (aria-labelledby or aria-label), then help (title), then name
-  // (inner text), then value (control value).  However, if
-  // title_elem_id is set, that means there's a label element
-  // supplying the name and then name takes precedence over help.
-  // TODO(dmazzoni): clean this up by providing more granular labels in
-  // Blink, making the platform-specific mapping to accessible text simpler.
+  base::string16 text = GetString16Attribute(ui::AX_ATTR_NAME);
   base::string16 description = GetString16Attribute(ui::AX_ATTR_DESCRIPTION);
-  base::string16 help = GetString16Attribute(ui::AX_ATTR_HELP);
-
-  base::string16 placeholder;
-  switch (GetRole()) {
-    case ui::AX_ROLE_DATE:
-    case ui::AX_ROLE_INPUT_TIME:
-    case ui::AX_ROLE_TEXT_FIELD:
-      GetHtmlAttribute("placeholder", &placeholder);
+  if (!description.empty()) {
+    if (!text.empty())
+      text += base::ASCIIToUTF16(" ");
+    text += description;
   }
 
-  int title_elem_id = GetIntAttribute(
-      ui::AX_ATTR_TITLE_UI_ELEMENT);
-  base::string16 text;
-  if (!description.empty())
-    text = description;
-  else if (!name.empty()) {
-    text = name;
-    if (!help.empty()) {
-      // TODO(vkuzkokov): This is not the best way to pass 2 texts but this is
-      // how Blink seems to be doing it.
-      text += base::ASCIIToUTF16(" ");
-      text += help;
-    }
-  } else if (!help.empty())
-    text = help;
-  else if (!placeholder.empty())
-    text = placeholder;
-  else if (!value.empty())
+  if (text.empty())
     text = value;
-  else if (title_elem_id) {
-    BrowserAccessibility* title_elem =
-          manager()->GetFromID(title_elem_id);
-    if (title_elem)
-      text = static_cast<BrowserAccessibilityAndroid*>(title_elem)->GetText();
-  }
 
   // This is called from PlatformIsLeaf, so don't call PlatformChildCount
   // from within this!
   if (text.empty() &&
       (HasOnlyStaticTextChildren() ||
        (IsFocusable() && HasOnlyTextAndImageChildren()))) {
     for (uint32 i = 0; i < InternalChildCount(); i++) {
       BrowserAccessibility* child = InternalGetChild(i);
       text += static_cast<BrowserAccessibilityAndroid*>(child)->GetText();
     }
   }
 
   if (text.empty() && (IsLink() || GetRole() == ui::AX_ROLE_IMAGE)) {
     base::string16 url = GetString16Attribute(ui::AX_ATTR_URL);
     // Given a url like http://foo.com/bar/baz.png, just return the
-    // base name, e.g., "baz".
+    // base text, e.g., "baz".
     int trailing_slashes = 0;
     while (url.size() - trailing_slashes > 0 &&
            url[url.size() - trailing_slashes - 1] == '/') {
       trailing_slashes++;
     }
     if (trailing_slashes)
       url = url.substr(0, url.size() - trailing_slashes);
     size_t slash_index = url.rfind('/');
     if (slash_index != std::string::npos)
       url = url.substr(slash_index + 1);
@@ skipping 570 matching lines @@
 int BrowserAccessibilityAndroid::CountChildrenWithRole(ui::AXRole role) const {
   int count = 0;
   for (uint32 i = 0; i < PlatformChildCount(); i++) {
     if (PlatformGetChild(i)->GetRole() == role)
       count++;
   }
   return count;
 }
 
 }  // namespace content