Refactor BrowserAccessibility to prepare for AXNode (re-land)

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/strings/utf_string_conversions.h"
 #include "content/browser/accessibility/browser_accessibility_manager_android.h"
 #include "content/common/accessibility_messages.h"
 
@@ skipping 38 matching lines @@
 
 BrowserAccessibilityAndroid::BrowserAccessibilityAndroid() {
   first_time_ = true;
 }
 
 bool BrowserAccessibilityAndroid::IsNative() const {
   return true;
 }
 
 bool BrowserAccessibilityAndroid::PlatformIsLeaf() const {
-  if (child_count() == 0)
+  if (InternalChildCount() == 0)
     return true;
 
   // Iframes are always allowed to contain children.
   if (IsIframe() ||
-      role() == ui::AX_ROLE_ROOT_WEB_AREA ||
-      role() == ui::AX_ROLE_WEB_AREA) {
+      GetRole() == ui::AX_ROLE_ROOT_WEB_AREA ||
+      GetRole() == ui::AX_ROLE_WEB_AREA) {
     return false;
   }
 
   // If it has a focusable child, we definitely can't leave out children.
   if (HasFocusableChild())
     return false;
 
   // Headings with text can drop their children.
   base::string16 name = GetText();
-  if (role() == ui::AX_ROLE_HEADING && !name.empty())
+  if (GetRole() == ui::AX_ROLE_HEADING && !name.empty())
     return true;
 
   // Focusable nodes with text can drop their children.
   if (HasState(ui::AX_STATE_FOCUSABLE) && !name.empty())
     return true;
 
   // Nodes with only static text as children can drop their children.
   if (HasOnlyStaticTextChildren())
     return true;
 
   return BrowserAccessibility::PlatformIsLeaf();
 }
 
 bool BrowserAccessibilityAndroid::IsCheckable() const {
   bool checkable = false;
   bool is_aria_pressed_defined;
   bool is_mixed;
   GetAriaTristate("aria-pressed", &is_aria_pressed_defined, &is_mixed);
-  if (role() == ui::AX_ROLE_CHECK_BOX ||
-      role() == ui::AX_ROLE_RADIO_BUTTON ||
+  if (GetRole() == ui::AX_ROLE_CHECK_BOX ||
+      GetRole() == ui::AX_ROLE_RADIO_BUTTON ||
       is_aria_pressed_defined) {
     checkable = true;
   }
   if (HasState(ui::AX_STATE_CHECKED))
     checkable = true;
   return checkable;
 }
 
 bool BrowserAccessibilityAndroid::IsChecked() const {
   return HasState(ui::AX_STATE_CHECKED);
 }
 
 bool BrowserAccessibilityAndroid::IsClickable() const {
   return (PlatformIsLeaf() && !GetText().empty());
 }
 
 bool BrowserAccessibilityAndroid::IsCollection() const {
-  return (role() == ui::AX_ROLE_GRID ||
-          role() == ui::AX_ROLE_LIST ||
-          role() == ui::AX_ROLE_LIST_BOX ||
-          role() == ui::AX_ROLE_TABLE ||
-          role() == ui::AX_ROLE_TREE);
+  return (GetRole() == ui::AX_ROLE_GRID ||
+          GetRole() == ui::AX_ROLE_LIST ||
+          GetRole() == ui::AX_ROLE_LIST_BOX ||
+          GetRole() == ui::AX_ROLE_TABLE ||
+          GetRole() == ui::AX_ROLE_TREE);
 }
 
 bool BrowserAccessibilityAndroid::IsCollectionItem() const {
-  return (role() == ui::AX_ROLE_CELL ||
-          role() == ui::AX_ROLE_COLUMN_HEADER ||
-          role() == ui::AX_ROLE_DESCRIPTION_LIST_TERM ||
-          role() == ui::AX_ROLE_LIST_BOX_OPTION ||
-          role() == ui::AX_ROLE_LIST_ITEM ||
-          role() == ui::AX_ROLE_ROW_HEADER ||
-          role() == ui::AX_ROLE_TREE_ITEM);
+  return (GetRole() == ui::AX_ROLE_CELL ||
+          GetRole() == ui::AX_ROLE_COLUMN_HEADER ||
+          GetRole() == ui::AX_ROLE_DESCRIPTION_LIST_TERM ||
+          GetRole() == ui::AX_ROLE_LIST_BOX_OPTION ||
+          GetRole() == ui::AX_ROLE_LIST_ITEM ||
+          GetRole() == ui::AX_ROLE_ROW_HEADER ||
+          GetRole() == ui::AX_ROLE_TREE_ITEM);
 }
 
 bool BrowserAccessibilityAndroid::IsContentInvalid() const {
   std::string invalid;
   return GetHtmlAttribute("aria-invalid", &invalid);
 }
 
 bool BrowserAccessibilityAndroid::IsDismissable() const {
   return false;  // No concept of "dismissable" on the web currently.
 }
 
 bool BrowserAccessibilityAndroid::IsEnabled() const {
   return HasState(ui::AX_STATE_ENABLED);
 }
 
 bool BrowserAccessibilityAndroid::IsFocusable() const {
   bool focusable = HasState(ui::AX_STATE_FOCUSABLE);
   if (IsIframe() ||
-      role() == ui::AX_ROLE_WEB_AREA) {
+      GetRole() == ui::AX_ROLE_WEB_AREA) {
     focusable = false;
   }
   return focusable;
 }
 
 bool BrowserAccessibilityAndroid::IsFocused() const {
   return manager()->GetFocus(manager()->GetRoot()) == this;
 }
 
 bool BrowserAccessibilityAndroid::IsHeading() const {
-  return (role() == ui::AX_ROLE_COLUMN_HEADER ||
-          role() == ui::AX_ROLE_HEADING ||
-          role() == ui::AX_ROLE_ROW_HEADER);
+  return (GetRole() == ui::AX_ROLE_COLUMN_HEADER ||
+          GetRole() == ui::AX_ROLE_HEADING ||
+          GetRole() == ui::AX_ROLE_ROW_HEADER);
 }
 
 bool BrowserAccessibilityAndroid::IsHierarchical() const {
-  return (role() == ui::AX_ROLE_LIST ||
-          role() == ui::AX_ROLE_TREE);
+  return (GetRole() == ui::AX_ROLE_LIST ||
+          GetRole() == ui::AX_ROLE_TREE);
 }
 
 bool BrowserAccessibilityAndroid::IsLink() const {
-  return role() == ui::AX_ROLE_LINK || role() == ui::AX_ROLE_IMAGE_MAP_LINK;
+  return GetRole() == ui::AX_ROLE_LINK ||
+         GetRole() == ui::AX_ROLE_IMAGE_MAP_LINK;
 }
 
 bool BrowserAccessibilityAndroid::IsMultiLine() const {
-  return role() == ui::AX_ROLE_TEXT_AREA;
+  return GetRole() == ui::AX_ROLE_TEXT_AREA;
 }
 
 bool BrowserAccessibilityAndroid::IsPassword() const {
   return HasState(ui::AX_STATE_PROTECTED);
 }
 
 bool BrowserAccessibilityAndroid::IsRangeType() const {
-  return (role() == ui::AX_ROLE_PROGRESS_INDICATOR ||
-          role() == ui::AX_ROLE_SCROLL_BAR ||
-          role() == ui::AX_ROLE_SLIDER);
+  return (GetRole() == ui::AX_ROLE_PROGRESS_INDICATOR ||
+          GetRole() == ui::AX_ROLE_SCROLL_BAR ||
+          GetRole() == ui::AX_ROLE_SLIDER);
 }
 
 bool BrowserAccessibilityAndroid::IsScrollable() const {
   int dummy;
   return GetIntAttribute(ui::AX_ATTR_SCROLL_X_MAX, &dummy);
 }
 
 bool BrowserAccessibilityAndroid::IsSelected() const {
   return HasState(ui::AX_STATE_SELECTED);
 }
 
 bool BrowserAccessibilityAndroid::IsVisibleToUser() const {
   return !HasState(ui::AX_STATE_INVISIBLE);
 }
 
 bool BrowserAccessibilityAndroid::CanOpenPopup() const {
   return HasState(ui::AX_STATE_HASPOPUP);
 }
 
 const char* BrowserAccessibilityAndroid::GetClassName() const {
   const char* class_name = NULL;
 
-  switch(role()) {
+  switch(GetRole()) {
     case ui::AX_ROLE_EDITABLE_TEXT:
     case ui::AX_ROLE_SPIN_BUTTON:
     case ui::AX_ROLE_TEXT_AREA:
     case ui::AX_ROLE_TEXT_FIELD:
       class_name = "android.widget.EditText";
       break;
     case ui::AX_ROLE_SLIDER:
       class_name = "android.widget.SeekBar";
       break;
     case ui::AX_ROLE_COMBO_BOX:
@@ skipping 40 matching lines @@
     default:
       class_name = "android.view.View";
       break;
   }
 
   return class_name;
 }
 
 base::string16 BrowserAccessibilityAndroid::GetText() const {
   if (IsIframe() ||
-      role() == ui::AX_ROLE_WEB_AREA) {
+      GetRole() == ui::AX_ROLE_WEB_AREA) {
     return base::string16();
   }
 
   base::string16 description = GetString16Attribute(
       ui::AX_ATTR_DESCRIPTION);
   base::string16 text;
   if (!name().empty())
     text = base::UTF8ToUTF16(name());
   else if (!description.empty())
     text = description;
   else if (!value().empty())
     text = base::UTF8ToUTF16(value());
 
   // This is called from PlatformIsLeaf, so don't call PlatformChildCount
   // from within this!
   if (text.empty() && HasOnlyStaticTextChildren()) {
-    for (uint32 i = 0; i < child_count(); i++) {
-      BrowserAccessibility* child = children()[i];
+    for (uint32 i = 0; i < InternalChildCount(); i++) {
+      BrowserAccessibility* child = InternalGetChild(i);
       text += static_cast<BrowserAccessibilityAndroid*>(child)->GetText();
     }
   }
 
-  switch(role()) {
+  switch(GetRole()) {
     case ui::AX_ROLE_HEADING:
       // Only append "heading" if this node already has text.
       if (!text.empty())
         text += base::ASCIIToUTF16(" Heading");
       break;
   }
 
   return text;
 }
 
 int BrowserAccessibilityAndroid::GetItemIndex() const {
   int index = 0;
-  switch(role()) {
+  switch(GetRole()) {
     case ui::AX_ROLE_LIST_ITEM:
     case ui::AX_ROLE_LIST_BOX_OPTION:
     case ui::AX_ROLE_TREE_ITEM:
-      index = index_in_parent();
+      index = GetIndexInParent();
       break;
     case ui::AX_ROLE_SLIDER:
     case ui::AX_ROLE_PROGRESS_INDICATOR: {
       float value_for_range;
       if (GetFloatAttribute(
               ui::AX_ATTR_VALUE_FOR_RANGE, &value_for_range)) {
         index = static_cast<int>(value_for_range);
       }
       break;
     }
   }
   return index;
 }
 
 int BrowserAccessibilityAndroid::GetItemCount() const {
   int count = 0;
-  switch(role()) {
+  switch(GetRole()) {
     case ui::AX_ROLE_LIST:
     case ui::AX_ROLE_LIST_BOX:
       count = PlatformChildCount();
       break;
     case ui::AX_ROLE_SLIDER:
     case ui::AX_ROLE_PROGRESS_INDICATOR: {
       float max_value_for_range;
       if (GetFloatAttribute(ui::AX_ATTR_MAX_VALUE_FOR_RANGE,
                             &max_value_for_range)) {
         count = static_cast<int>(max_value_for_range);
@@ skipping 138 matching lines @@
   else if (live == "assertive")
     return ANDROID_VIEW_VIEW_ACCESSIBILITY_LIVE_REGION_ASSERTIVE;
   return ANDROID_VIEW_VIEW_ACCESSIBILITY_LIVE_REGION_NONE;
 }
 
 int BrowserAccessibilityAndroid::AndroidRangeType() const {
   return ANDROID_VIEW_ACCESSIBILITY_RANGE_TYPE_FLOAT;
 }
 
 int BrowserAccessibilityAndroid::RowCount() const {
-  if (role() == ui::AX_ROLE_GRID ||
-      role() == ui::AX_ROLE_TABLE) {
+  if (GetRole() == ui::AX_ROLE_GRID ||
+      GetRole() == ui::AX_ROLE_TABLE) {
     return CountChildrenWithRole(ui::AX_ROLE_ROW);
   }
 
-  if (role() == ui::AX_ROLE_LIST ||
-      role() == ui::AX_ROLE_LIST_BOX ||
-      role() == ui::AX_ROLE_TREE) {
+  if (GetRole() == ui::AX_ROLE_LIST ||
+      GetRole() == ui::AX_ROLE_LIST_BOX ||
+      GetRole() == ui::AX_ROLE_TREE) {
     return PlatformChildCount();
   }
 
   return 0;
 }
 
 int BrowserAccessibilityAndroid::ColumnCount() const {
-  if (role() == ui::AX_ROLE_GRID ||
-      role() == ui::AX_ROLE_TABLE) {
+  if (GetRole() == ui::AX_ROLE_GRID ||
+      GetRole() == ui::AX_ROLE_TABLE) {
     return CountChildrenWithRole(ui::AX_ROLE_COLUMN);
   }
   return 0;
 }
 
 int BrowserAccessibilityAndroid::RowIndex() const {
-  if (role() == ui::AX_ROLE_LIST_ITEM ||
-      role() == ui::AX_ROLE_LIST_BOX_OPTION ||
-      role() == ui::AX_ROLE_TREE_ITEM) {
-    return index_in_parent();
+  if (GetRole() == ui::AX_ROLE_LIST_ITEM ||
+      GetRole() == ui::AX_ROLE_LIST_BOX_OPTION ||
+      GetRole() == ui::AX_ROLE_TREE_ITEM) {
+    return GetIndexInParent();
   }
 
   return GetIntAttribute(ui::AX_ATTR_TABLE_CELL_ROW_INDEX);
 }
 
 int BrowserAccessibilityAndroid::RowSpan() const {
   return GetIntAttribute(ui::AX_ATTR_TABLE_CELL_ROW_SPAN);
 }
 
 int BrowserAccessibilityAndroid::ColumnIndex() const {
@@ skipping 12 matching lines @@
   return GetFloatAttribute(ui::AX_ATTR_MAX_VALUE_FOR_RANGE);
 }
 
 float BrowserAccessibilityAndroid::RangeCurrentValue() const {
   return GetFloatAttribute(ui::AX_ATTR_VALUE_FOR_RANGE);
 }
 
 bool BrowserAccessibilityAndroid::HasFocusableChild() const {
   // This is called from PlatformIsLeaf, so don't call PlatformChildCount
   // from within this!
-  for (uint32 i = 0; i < child_count(); i++) {
-    BrowserAccessibility* child = children()[i];
+  for (uint32 i = 0; i < InternalChildCount(); i++) {
+    BrowserAccessibility* child = InternalGetChild(i);
     if (child->HasState(ui::AX_STATE_FOCUSABLE))
       return true;
     if (static_cast<BrowserAccessibilityAndroid*>(child)->HasFocusableChild())
       return true;
   }
   return false;
 }
 
 bool BrowserAccessibilityAndroid::HasOnlyStaticTextChildren() const {
   // This is called from PlatformIsLeaf, so don't call PlatformChildCount
   // from within this!
-  for (uint32 i = 0; i < child_count(); i++) {
-    BrowserAccessibility* child = children()[i];
-    if (child->role() != ui::AX_ROLE_STATIC_TEXT)
+  for (uint32 i = 0; i < InternalChildCount(); i++) {
+    BrowserAccessibility* child = InternalGetChild(i);
+    if (child->GetRole() != ui::AX_ROLE_STATIC_TEXT)
       return false;
   }
   return true;
 }
 
 bool BrowserAccessibilityAndroid::IsIframe() const {
   base::string16 html_tag = GetString16Attribute(
       ui::AX_ATTR_HTML_TAG);
   return html_tag == base::ASCIIToUTF16("iframe");
 }
 
 void BrowserAccessibilityAndroid::PostInitialize() {
   BrowserAccessibility::PostInitialize();
 
   if (IsEditableText()) {
     if (base::UTF8ToUTF16(value()) != new_value_) {
       old_value_ = new_value_;
       new_value_ = base::UTF8ToUTF16(value());
     }
   }
 
-  if (role() == ui::AX_ROLE_ALERT && first_time_)
+  if (GetRole() == ui::AX_ROLE_ALERT && first_time_)
     manager()->NotifyAccessibilityEvent(ui::AX_EVENT_ALERT, this);
 
   base::string16 live;
   if (GetString16Attribute(
       ui::AX_ATTR_CONTAINER_LIVE_STATUS, &live)) {
     NotifyLiveRegionUpdate(live);
   }
 
   first_time_ = false;
 }
@@ skipping 10 matching lines @@
       manager()->NotifyAccessibilityEvent(ui::AX_EVENT_SHOW,
                                          this);
     }
     cached_text_ = text;
   }
 }
 
 int BrowserAccessibilityAndroid::CountChildrenWithRole(ui::AXRole role) const {
   int count = 0;
   for (uint32 i = 0; i < PlatformChildCount(); i++) {
-    if (PlatformGetChild(i)->role() == role)
+    if (PlatformGetChild(i)->GetRole() == role)
       count++;
   }
   return count;
 }
 
 }  // namespace content