1 /* 2 * Copyright (C) 2022 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.settings.fuelgauge.batteryusage; 17 18 import android.content.Context; 19 import android.util.AttributeSet; 20 import android.widget.ImageView; 21 import android.widget.TextView; 22 23 import androidx.annotation.VisibleForTesting; 24 import androidx.preference.Preference; 25 import androidx.preference.PreferenceViewHolder; 26 27 import com.android.settings.R; 28 29 /** A preference for expandable section divider. */ 30 public class ExpandDividerPreference extends Preference { 31 private static final String TAG = "ExpandDividerPreference"; 32 @VisibleForTesting 33 static final String PREFERENCE_KEY = "expandable_divider"; 34 35 @VisibleForTesting 36 TextView mTextView; 37 @VisibleForTesting 38 ImageView mImageView; 39 private OnExpandListener mOnExpandListener; 40 41 private boolean mIsExpanded = false; 42 private String mTitleContent = null; 43 44 /** A callback listener for expand state is changed by users. */ 45 public interface OnExpandListener { 46 /** Callback function for expand state is changed by users. */ onExpand(boolean isExpanded)47 void onExpand(boolean isExpanded); 48 } 49 ExpandDividerPreference(Context context)50 public ExpandDividerPreference(Context context) { 51 this(context, /*attrs=*/ null); 52 } 53 ExpandDividerPreference(Context context, AttributeSet attrs)54 public ExpandDividerPreference(Context context, AttributeSet attrs) { 55 super(context, attrs); 56 setLayoutResource(R.layout.preference_expand_divider); 57 setKey(PREFERENCE_KEY); 58 } 59 60 @Override onBindViewHolder(PreferenceViewHolder view)61 public void onBindViewHolder(PreferenceViewHolder view) { 62 super.onBindViewHolder(view); 63 mTextView = (TextView) view.findViewById(R.id.expand_title); 64 mImageView = (ImageView) view.findViewById(R.id.expand_icon); 65 refreshState(); 66 } 67 68 @Override onClick()69 public void onClick() { 70 setIsExpanded(!mIsExpanded); 71 if (mOnExpandListener != null) { 72 mOnExpandListener.onExpand(mIsExpanded); 73 } 74 } 75 setTitle(final String titleContent)76 void setTitle(final String titleContent) { 77 mTitleContent = titleContent; 78 refreshState(); 79 } 80 setIsExpanded(boolean isExpanded)81 void setIsExpanded(boolean isExpanded) { 82 mIsExpanded = isExpanded; 83 refreshState(); 84 } 85 setOnExpandListener(OnExpandListener listener)86 void setOnExpandListener(OnExpandListener listener) { 87 mOnExpandListener = listener; 88 } 89 refreshState()90 private void refreshState() { 91 if (mImageView != null) { 92 mImageView.setImageResource(mIsExpanded 93 ? R.drawable.ic_settings_expand_less 94 : R.drawable.ic_settings_expand_more); 95 } 96 if (mTextView != null) { 97 mTextView.setText(mTitleContent); 98 } 99 } 100 } 101