Support KitKat accessibility APIs.

content/public/android/java/src/org/chromium/content/browser/accessibility/KitKatBrowserAccessibilityManager.java

+// 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.
+
+package org.chromium.content.browser.accessibility;
+
+import android.os.Bundle;
+import android.view.accessibility.AccessibilityEvent;
+import android.view.accessibility.AccessibilityNodeInfo;
+import android.view.accessibility.AccessibilityNodeProvider;
+
+import org.chromium.base.JNINamespace;
+import org.chromium.content.browser.ContentViewCore;
+
+import java.util.List;
+
+/**
+ * Subclass of BrowserAccessibilityManager for KitKat that creates an
+ * AccessibilityNodeProvider and delegates its implementation to this object.
+ */
+@JNINamespace("content")
+public class KitKatBrowserAccessibilityManager extends JellyBeanBrowserAccessibilityManager {
+    KitKatBrowserAccessibilityManager(long nativeBrowserAccessibilityManagerAndroid,
+            ContentViewCore contentViewCore) {
+        super(nativeBrowserAccessibilityManagerAndroid, contentViewCore);
+    }
+
+    @Override
+    protected void setAccessibilityNodeInfoKitKatAttributes(AccessibilityNodeInfo node,
+            boolean canOpenPopup,
+            boolean contentInvalid,
+            boolean dismissable,
+            boolean multiLine,
+            int inputType,
+            int liveRegion) {
+        node.setCanOpenPopup(canOpenPopup);
+        node.setContentInvalid(contentInvalid);
+        node.setDismissable(contentInvalid);
+        node.setMultiLine(multiLine);
+        node.setInputType(inputType);
+        node.setLiveRegion(liveRegion);
+    }
+
+    @Override
+    protected void setAccessibilityNodeInfoCollectionInfo(AccessibilityNodeInfo node,
+            int rowCount, int columnCount, boolean hierarchical) {
+        node.setCollectionInfo(AccessibilityNodeInfo.CollectionInfo.obtain(
+                rowCount, columnCount, hierarchical));
+    }
+
+    @Override
+    protected void setAccessibilityNodeInfoCollectionItemInfo(AccessibilityNodeInfo node,
+            int rowIndex, int rowSpan, int columnIndex, int columnSpan, boolean heading) {
+        node.setCollectionItemInfo(AccessibilityNodeInfo.CollectionItemInfo.obtain(
+                rowIndex, rowSpan, columnIndex, columnSpan, heading));
+    }
+
+    @Override
+    protected void setAccessibilityNodeInfoRangeInfo(AccessibilityNodeInfo node,
+            int rangeType, float min, float max, float current) {
+        node.setRangeInfo(AccessibilityNodeInfo.RangeInfo.obtain(
+                rangeType, min, max, current));
+    }
+
+    @Override
+    protected void setAccessibilityEventKitKatAttributes(AccessibilityEvent event,
+            boolean canOpenPopup,
+            boolean contentInvalid,
+            boolean dismissable,
+            boolean multiLine,
+            int inputType,
+            int liveRegion) {
+        // This is just a fallback for pre-KitKat systems.
+        // Do nothing on KitKat and higher.
+    }
+
+    @Override
+    protected void setAccessibilityEventCollectionInfo(AccessibilityEvent event,
+            int rowCount, int columnCount, boolean hierarchical) {
+        // This is just a fallback for pre-KitKat systems.
+        // Do nothing on KitKat and higher.
+    }
+
+    @Override
+    protected void setAccessibilityEventCollectionItemInfo(AccessibilityEvent event,
+            int rowIndex, int rowSpan, int columnIndex, int columnSpan, boolean heading) {
+        // This is just a fallback for pre-KitKat systems.
+        // Do nothing on KitKat and higher.
+    }
+
+    @Override
+    protected void setAccessibilityEventRangeInfo(AccessibilityEvent event,
+            int rangeType, float min, float max, float current) {
+        // This is just a fallback for pre-KitKat systems.
+        // Do nothing on KitKat and higher.
+    }
+}