Fix Android accessibility for editable text fields

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_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/app/strings/grit/content_strings.h"
 #include "content/browser/accessibility/browser_accessibility_manager_android.h"
 #include "content/common/accessibility_messages.h"
 #include "content/public/common/content_client.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 namespace {
 
+const base::char16 kSecurePasswordBullet = 0x2022;
+
 // These are enums from android.text.InputType in Java:
 enum {
   ANDROID_TEXT_INPUTTYPE_TYPE_NULL = 0,
   ANDROID_TEXT_INPUTTYPE_TYPE_DATETIME = 0x4,
   ANDROID_TEXT_INPUTTYPE_TYPE_DATETIME_DATE = 0x14,
   ANDROID_TEXT_INPUTTYPE_TYPE_DATETIME_TIME = 0x24,
   ANDROID_TEXT_INPUTTYPE_TYPE_NUMBER = 0x2,
   ANDROID_TEXT_INPUTTYPE_TYPE_PHONE = 0x3,
   ANDROID_TEXT_INPUTTYPE_TYPE_TEXT = 0x1,
   ANDROID_TEXT_INPUTTYPE_TYPE_TEXT_URI = 0x11,
@@ skipping 29 matching lines @@
 }
 
 bool BrowserAccessibilityAndroid::IsNative() const {
   return true;
 }
 
 void BrowserAccessibilityAndroid::OnLocationChanged() {
   manager()->NotifyAccessibilityEvent(ui::AX_EVENT_LOCATION_CHANGED, this);
 }
 
+base::string16 BrowserAccessibilityAndroid::GetValue() const {
+  base::string16 value = BrowserAccessibility::GetValue();
+
+  // Optionally replace entered password text with bullet characters
+  // based on a user preference.
+  if (IsPassword()) {
+    bool should_expose = static_cast<BrowserAccessibilityManagerAndroid*>(
+        manager())->ShouldExposePasswordText();
+    if (!should_expose) {
+      value = base::string16(value.size(), kSecurePasswordBullet);
+    }
+  }
+
+  return value;
+}
+
 bool BrowserAccessibilityAndroid::PlatformIsLeaf() const {
   if (BrowserAccessibility::PlatformIsLeaf())
     return true;
 
   // Iframes are always allowed to contain children.
   if (IsIframe() ||
       GetRole() == ui::AX_ROLE_ROOT_WEB_AREA ||
       GetRole() == ui::AX_ROLE_WEB_AREA) {
     return false;
   }
@@ skipping 1307 matching lines @@
 int BrowserAccessibilityAndroid::CountChildrenWithRole(ui::AXRole role) const {
   int count = 0;
   for (uint32_t i = 0; i < PlatformChildCount(); i++) {
     if (PlatformGetChild(i)->GetRole() == role)
       count++;
   }
   return count;
 }
 
 }  // namespace content