1 /* 2 * Copyright (C) 2012 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.camera.ui; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.widget.Checkable; 22 import android.widget.LinearLayout; 23 24 public class CheckedLinearLayout extends LinearLayout implements Checkable { 25 private static final int[] CHECKED_STATE_SET = { 26 android.R.attr.state_checked 27 }; 28 private boolean mChecked; 29 CheckedLinearLayout(Context context, AttributeSet attrs)30 public CheckedLinearLayout(Context context, AttributeSet attrs) { 31 super(context, attrs); 32 } 33 34 @Override isChecked()35 public boolean isChecked() { 36 return mChecked; 37 } 38 39 @Override setChecked(boolean checked)40 public void setChecked(boolean checked) { 41 if (mChecked != checked) { 42 mChecked = checked; 43 refreshDrawableState(); 44 } 45 } 46 47 @Override toggle()48 public void toggle() { 49 setChecked(!mChecked); 50 } 51 52 @Override onCreateDrawableState(int extraSpace)53 public int[] onCreateDrawableState(int extraSpace) { 54 final int[] drawableState = super.onCreateDrawableState(extraSpace + 1); 55 if (mChecked) { 56 mergeDrawableStates(drawableState, CHECKED_STATE_SET); 57 } 58 return drawableState; 59 } 60 } 61