Native Android accessibility.

content/browser/accessibility/accessibility_tree_formatter_android.cc

+// Copyright (c) 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/accessibility_tree_formatter.h"
+
+#include <string>
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/files/file_path.h"
+#include "base/json/json_writer.h"
+#include "base/string_util.h"
+#include "base/stringprintf.h"
+#include "base/utf_string_conversions.h"
+#include "content/browser/accessibility/browser_accessibility_android.h"
+#include "content/common/accessibility_node_data.h"
+
+using base::StringPrintf;
+
+namespace content {
+
+const char* BOOL_ATTRIBUTES[] = {
+  "checkable",
+  "checked",
+  "clickable",
+  "disabled",
+  "editable_text",
+  "focusable",
+  "focused",
+  "invisible",
+  "password",
+  "scrollable",
+  "selected"
+};
+
+const char* STRING_ATTRIBUTES[] = {
+  "name"
+};
+
+const char* INT_ATTRIBUTES[] = {
+  "item_index",
+  "item_count"
+};
+
+void AccessibilityTreeFormatter::Initialize() {
+}
+
+void AccessibilityTreeFormatter::AddProperties(
+    const BrowserAccessibility& node, DictionaryValue* dict) {
+  const BrowserAccessibilityAndroid* android_node =
+      static_cast<const BrowserAccessibilityAndroid*>(&node);
+  JNIEnv* env = base::android::AttachCurrentThread();
+
+  // Class name.
+  dict->SetString("class", base::android::ConvertJavaStringToUTF8(
+      android_node->GetClassNameJNI(env, NULL)));
+
+  // Bool attributes.
+  dict->SetBoolean("focusable",
+                   android_node->IsFocusableJNI(env, NULL));
+  dict->SetBoolean("focused",
+                   android_node->IsFocusedJNI(env, NULL));
+  dict->SetBoolean("clickable",
+                   android_node->GetClickableJNI(env, NULL));
+  dict->SetBoolean("editable_text",
+                   android_node->IsEditableTextJNI(env, NULL));
+  dict->SetBoolean("checkable",
+                   android_node->IsCheckableJNI(env, NULL));
+  dict->SetBoolean("checked",
+                   android_node->IsCheckedJNI(env, NULL));
+  dict->SetBoolean("disabled",
+                   !android_node->IsEnabledJNI(env, NULL));
+  dict->SetBoolean("scrollable",
+                   android_node->IsScrollableJNI(env, NULL));
+  dict->SetBoolean("password",
+                   android_node->IsPasswordJNI(env, NULL));
+  dict->SetBoolean("selected",
+                   android_node->IsSelectedJNI(env, NULL));
+  dict->SetBoolean("invisible",
+                   !android_node->IsVisibleJNI(env, NULL));
+
+  // String attributes.
+  dict->SetString("name", base::android::ConvertJavaStringToUTF8(
+      android_node->GetNameJNI(env, NULL)));
+
+  // Int attributes.
+  dict->SetInteger("item_index",
+                   android_node->GetItemIndexJNI(env, NULL));
+  dict->SetInteger("item_count",
+                   android_node->GetItemCountJNI(env, NULL));
+}
+
+bool AccessibilityTreeFormatter::IncludeChildren(
+    const BrowserAccessibility& node) {
+  const BrowserAccessibilityAndroid* android_node =
+      static_cast<const BrowserAccessibilityAndroid*>(&node);
+  JNIEnv* env = base::android::AttachCurrentThread();
+
+  return 0 != android_node->GetChildCountJNI(env, NULL);
+}
+
+string16 AccessibilityTreeFormatter::ToString(const DictionaryValue& dict,
+                                              const string16& indent) {
+  string16 line;
+
+  string16 class_value;
+  dict.GetString("class", &class_value);
+  WriteAttribute(true, UTF16ToUTF8(class_value), &line);
+
+  for (unsigned i = 0; i < arraysize(BOOL_ATTRIBUTES); i++) {
+    const char* attribute_name = BOOL_ATTRIBUTES[i];
+    bool value;
+    if (dict.GetBoolean(attribute_name, &value) && value)
+      WriteAttribute(true, attribute_name, &line);
+  }
+
+  for (unsigned i = 0; i < arraysize(STRING_ATTRIBUTES); i++) {
+    const char* attribute_name = STRING_ATTRIBUTES[i];
+    std::string value;
+    if (!dict.GetString(attribute_name, &value) || value.empty())
+      continue;
+    WriteAttribute(true,
+                   StringPrintf("%s='%s'", attribute_name, value.c_str()),
+                   &line);
+  }
+
+  for (unsigned i = 0; i < arraysize(INT_ATTRIBUTES); i++) {
+    const char* attribute_name = INT_ATTRIBUTES[i];
+    int value;
+    if (!dict.GetInteger(attribute_name, &value) || value == 0)
+      continue;
+    WriteAttribute(true,
+                   StringPrintf("%s=%d", attribute_name, value),
+                   &line);
+  }
+
+  return indent + line + ASCIIToUTF16("\n");
+}
+
+// static
+const base::FilePath::StringType
+AccessibilityTreeFormatter::GetActualFileSuffix() {
+  return FILE_PATH_LITERAL("-actual-android.txt");
+}
+
+// static
+const base::FilePath::StringType
+AccessibilityTreeFormatter::GetExpectedFileSuffix() {
+  return FILE_PATH_LITERAL("-expected-android.txt");
+}
+
+// static
+const std::string AccessibilityTreeFormatter::GetAllowEmptyString() {
+  return "@ANDROID-ALLOW-EMPTY:";
+}
+
+// static
+const std::string AccessibilityTreeFormatter::GetAllowString() {
+  return "@ANDROID-ALLOW:";
+}
+
+// static
+const std::string AccessibilityTreeFormatter::GetDenyString() {
+  return "@ANDROID-DENY:";
+}
+
+}  // namespace content