| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.support.v7.widget; |
| |
| import android.os.Bundle; |
| import android.support.v4.view.AccessibilityDelegateCompat; |
| import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat; |
| import android.view.View; |
| import android.view.accessibility.AccessibilityEvent; |
| |
| /** |
| * The AccessibilityDelegate used by RecyclerView. |
| * <p> |
| * This class handles basic accessibility actions and delegates them to LayoutManager. |
| */ |
| public class RecyclerViewAccessibilityDelegate extends AccessibilityDelegateCompat { |
| final RecyclerView mRecyclerView; |
| |
| |
| public RecyclerViewAccessibilityDelegate(RecyclerView recyclerView) { |
| mRecyclerView = recyclerView; |
| } |
| |
| @Override |
| public boolean performAccessibilityAction(View host, int action, Bundle args) { |
| if (super.performAccessibilityAction(host, action, args)) { |
| return true; |
| } |
| if (mRecyclerView.getLayoutManager() != null) { |
| return mRecyclerView.getLayoutManager().performAccessibilityAction(action, args); |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) { |
| super.onInitializeAccessibilityNodeInfo(host, info); |
| info.setClassName(RecyclerView.class.getName()); |
| if (mRecyclerView.getLayoutManager() != null) { |
| mRecyclerView.getLayoutManager().onInitializeAccessibilityNodeInfo(info); |
| } |
| } |
| |
| @Override |
| public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) { |
| super.onInitializeAccessibilityEvent(host, event); |
| event.setClassName(RecyclerView.class.getName()); |
| if (host instanceof RecyclerView) { |
| RecyclerView rv = (RecyclerView) host; |
| if (rv.getLayoutManager() != null) { |
| rv.getLayoutManager().onInitializeAccessibilityEvent(event); |
| } |
| } |
| } |
| |
| AccessibilityDelegateCompat getItemDelegate() { |
| return mItemDelegate; |
| } |
| |
| final AccessibilityDelegateCompat mItemDelegate = new AccessibilityDelegateCompat() { |
| @Override |
| public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfoCompat info) { |
| super.onInitializeAccessibilityNodeInfo(host, info); |
| if (mRecyclerView.getLayoutManager() != null) { |
| mRecyclerView.getLayoutManager(). |
| onInitializeAccessibilityNodeInfoForItem(host, info); |
| } |
| } |
| |
| @Override |
| public boolean performAccessibilityAction(View host, int action, Bundle args) { |
| if (super.performAccessibilityAction(host, action, args)) { |
| return true; |
| } |
| if (mRecyclerView.getLayoutManager() != null) { |
| return mRecyclerView.getLayoutManager(). |
| performAccessibilityActionForItem(host, action, args); |
| } |
| return false; |
| } |
| }; |
| } |