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 package com.android.car.hvac.ui; 17 18 import android.content.Context; 19 import android.graphics.drawable.Drawable; 20 import android.util.AttributeSet; 21 import android.view.View; 22 import android.widget.ImageButton; 23 24 /** 25 * A toggle button that has two states, each with a different drawable icon. 26 */ 27 public class ToggleButton extends ImageButton { 28 /** 29 * A listener that is notified when the button is toggled. 30 */ 31 public interface ToggleListener { onToggled(boolean isOn)32 void onToggled(boolean isOn); 33 } 34 35 private boolean mIsOn; 36 37 private Drawable mDrawableOff; 38 private Drawable mDrawableOn; 39 private ToggleListener mListener; 40 ToggleButton(Context context)41 public ToggleButton(Context context) { 42 super(context); 43 } 44 ToggleButton(Context context, AttributeSet attrs)45 public ToggleButton(Context context, AttributeSet attrs) { 46 super(context, attrs); 47 } 48 ToggleButton(Context context, AttributeSet attrs, int defStyleAttr)49 public ToggleButton(Context context, AttributeSet attrs, int defStyleAttr) { 50 super(context, attrs, defStyleAttr); 51 } 52 53 @Override onFinishInflate()54 public void onFinishInflate() { 55 super.onFinishInflate(); 56 setOnClickListener(new OnClickListener() { 57 @Override 58 public void onClick(View v) { 59 if (mIsOn) { 60 setImageDrawable(mDrawableOff); 61 if (mListener != null) { 62 mListener.onToggled(false); 63 } 64 mIsOn = false; 65 } else { 66 setImageDrawable(mDrawableOn); 67 if (mListener != null) { 68 mListener.onToggled(true); 69 } 70 mIsOn = true; 71 } 72 } 73 }); 74 } 75 setToggleListener(ToggleListener listener)76 public void setToggleListener(ToggleListener listener) { 77 mListener = listener; 78 } 79 setToggleIcons(Drawable on, Drawable off)80 public void setToggleIcons(Drawable on, Drawable off) { 81 mDrawableOff = off; 82 mDrawableOn = on; 83 setImageDrawable(mIsOn ? mDrawableOn : mDrawableOff); 84 } 85 setIsOn(boolean on)86 public void setIsOn(boolean on) { 87 mIsOn = on; 88 if (mIsOn) { 89 setImageDrawable(mDrawableOn); 90 } else { 91 setImageDrawable(mDrawableOff); 92 } 93 } 94 } 95