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 17 package com.android.documentsui; 18 19 import android.content.Context; 20 import android.graphics.Rect; 21 import android.util.AttributeSet; 22 import android.util.TypedValue; 23 import android.widget.LinearLayout; 24 25 /** 26 * Layout for a single item in List mode. This class overrides the default focus listener in order 27 * to light up a focus indicator when it is focused. 28 */ 29 public class ListItem extends LinearLayout 30 { ListItem(Context context)31 public ListItem(Context context) { 32 super(context); 33 } 34 ListItem(Context context, AttributeSet attrs)35 public ListItem(Context context, AttributeSet attrs) { 36 super(context, attrs); 37 } 38 39 @Override onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect)40 protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) { 41 TypedValue color = new TypedValue(); 42 int colorId = gainFocus ? android.R.attr.colorAccent : android.R.color.transparent; 43 getContext().getTheme().resolveAttribute(colorId, color, true); 44 45 findViewById(R.id.focus_indicator).setBackgroundColor(color.data); 46 super.onFocusChanged(gainFocus, direction, previouslyFocusedRect); 47 } 48 } 49