ATK accessibility support for web content on Aura Linux.

content/browser/accessibility/accessibility_tree_formatter_auralinux.cc

+// Copyright (c) 2015 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/accessibility_tree_formatter.h"
+
+#include <atk/atk.h>
+
+#include "base/logging.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/browser/accessibility/browser_accessibility_auralinux.h"
+
+namespace content {
+
+void AccessibilityTreeFormatter::AddProperties(const BrowserAccessibility& node,
+                                               base::DictionaryValue* dict) {
+  dict->SetInteger("id", node.GetId());
+  BrowserAccessibilityAuraLinux* acc_obj =
+      const_cast<BrowserAccessibility*>(&node)
+          ->ToBrowserAccessibilityAuraLinux();
+
+  AtkObject* atk_object = acc_obj->GetAtkObject();
+  AtkRole role = acc_obj->atk_role();
+  if (role != ATK_ROLE_UNKNOWN)
+    dict->SetString("role", atk_role_get_name(role));
+  dict->SetString("name", atk_object_get_name(atk_object));
+  dict->SetString("description", atk_object_get_description(atk_object));
+  AtkStateSet* state_set = atk_object_ref_state_set(atk_object);
+  base::ListValue* states = new base::ListValue;
+  for (int i = ATK_STATE_INVALID; i < ATK_STATE_LAST_DEFINED; i++) {
+    AtkStateType state_type = static_cast<AtkStateType>(i);
+    if (atk_state_set_contains_state(state_set, state_type))
+      states->AppendString(atk_state_type_get_name(state_type));
+  }
+  dict->Set("states", states);
+}
+
+base::string16 AccessibilityTreeFormatter::ToString(
+    const base::DictionaryValue& node) {
+  base::string16 line;
+  std::string role_value;
+  node.GetString("role", &role_value);
+  if (!role_value.empty()) {
+    WriteAttribute(true, base::StringPrintf("[%s]", role_value.c_str()), &line);
+  }
+
+  std::string name_value;
+  node.GetString("name", &name_value);
+  WriteAttribute(true, base::StringPrintf("name='%s'", name_value.c_str()),
+                 &line);
+
+  std::string description_value;
+  node.GetString("description", &description_value);
+  WriteAttribute(
+      false, base::StringPrintf("description='%s'", description_value.c_str()),
+      &line);
+
+  const base::ListValue* states_value;
+  node.GetList("states", &states_value);
+  for (base::ListValue::const_iterator it = states_value->begin();
+       it != states_value->end(); ++it) {
+    std::string state_value;
+    if ((*it)->GetAsString(&state_value))
+      WriteAttribute(true, state_value, &line);
+  }
+
+  int id_value;
+  node.GetInteger("id", &id_value);
+  WriteAttribute(false, base::StringPrintf("id=%d", id_value), &line);
+
+  return line + base::ASCIIToUTF16("\n");
+}
+
+void AccessibilityTreeFormatter::Initialize() {
+}
+
+// static
+const base::FilePath::StringType
+AccessibilityTreeFormatter::GetActualFileSuffix() {
+  return FILE_PATH_LITERAL("-actual-auralinux.txt");
+}
+
+// static
+const base::FilePath::StringType
+AccessibilityTreeFormatter::GetExpectedFileSuffix() {
+  return FILE_PATH_LITERAL("-expected-auralinux.txt");

[dmazzoni, 2015/05/22 22:25:32]

How about adding one simple -expected-auralinux.txt file to
content/test/data/accessibility/html as part of this change?

Or if you want, work on that as a follow-up.

+}
+
+// static
+const std::string AccessibilityTreeFormatter::GetAllowEmptyString() {
+  return "@AURALINUX-ALLOW-EMPTY:";
+}
+
+// static
+const std::string AccessibilityTreeFormatter::GetAllowString() {
+  return "@AURALINUX-ALLOW:";
+}
+
+// static
+const std::string AccessibilityTreeFormatter::GetDenyString() {
+  return "@AURALINUX-DENY:";
+}
+}