1/* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17package android.support.v17.leanback.widget; 18 19import android.content.Context; 20import android.graphics.Rect; 21import android.util.AttributeSet; 22import android.view.KeyEvent; 23import android.view.View; 24import android.widget.LinearLayout; 25 26/** 27 * A LinearLayout that preserves the focused child view. 28 */ 29class PlaybackControlsRowView extends LinearLayout { 30 public interface OnUnhandledKeyListener { 31 /** 32 * Returns true if the key event should be consumed. 33 */ 34 public boolean onUnhandledKey(KeyEvent event); 35 } 36 37 private OnUnhandledKeyListener mOnUnhandledKeyListener; 38 39 public PlaybackControlsRowView(Context context, AttributeSet attrs) { 40 super(context, attrs); 41 } 42 43 public PlaybackControlsRowView(Context context, AttributeSet attrs, int defStyle) { 44 super(context, attrs, defStyle); 45 } 46 47 public void setOnUnhandledKeyListener(OnUnhandledKeyListener listener) { 48 mOnUnhandledKeyListener = listener; 49 } 50 51 public OnUnhandledKeyListener getOnUnhandledKeyListener() { 52 return mOnUnhandledKeyListener; 53 } 54 55 @Override 56 public boolean dispatchKeyEvent(KeyEvent event) { 57 if (super.dispatchKeyEvent(event)) { 58 return true; 59 } 60 return mOnUnhandledKeyListener != null && mOnUnhandledKeyListener.onUnhandledKey(event); 61 } 62 63 @Override 64 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 65 final View focused = findFocus(); 66 if (focused != null && focused.requestFocus(direction, previouslyFocusedRect)) { 67 return true; 68 } 69 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 70 } 71 72 @Override 73 public boolean hasOverlappingRendering() { 74 return false; 75 } 76} 77