1 /* 2 * Copyright (C) 2016 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 17 package com.android.launcher3.keyboard; 18 19 import android.graphics.Canvas; 20 import android.view.View; 21 import android.view.View.OnFocusChangeListener; 22 23 import com.android.launcher3.keyboard.FocusIndicatorHelper.SimpleFocusIndicatorHelper; 24 25 import androidx.recyclerview.widget.RecyclerView; 26 import androidx.recyclerview.widget.RecyclerView.ItemDecoration; 27 import androidx.recyclerview.widget.RecyclerView.State; 28 29 /** 30 * {@link ItemDecoration} for drawing and animating focused view background. 31 */ 32 public class FocusedItemDecorator extends ItemDecoration { 33 34 private FocusIndicatorHelper mHelper; 35 FocusedItemDecorator(View container)36 public FocusedItemDecorator(View container) { 37 mHelper = new SimpleFocusIndicatorHelper(container); 38 } 39 getFocusListener()40 public OnFocusChangeListener getFocusListener() { 41 return mHelper; 42 } 43 44 @Override onDraw(Canvas c, RecyclerView parent, State state)45 public void onDraw(Canvas c, RecyclerView parent, State state) { 46 mHelper.draw(c); 47 } 48 } 49