1 /* 2 * Copyright (C) 2021 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; 17 18 import android.content.Context; 19 import android.util.AttributeSet; 20 import android.view.View; 21 import android.widget.ImageView; 22 import android.widget.TextView; 23 24 import androidx.annotation.VisibleForTesting; 25 import androidx.preference.Preference; 26 import androidx.preference.PreferenceViewHolder; 27 28 import com.android.settings.R; 29 30 /** A preference for expandable section divider. */ 31 public class ExpandDividerPreference extends Preference { 32 private static final String TAG = "ExpandDividerPreference"; 33 @VisibleForTesting 34 static final String PREFERENCE_KEY = "expandable_divider"; 35 36 @VisibleForTesting TextView mTextView; 37 @VisibleForTesting ImageView mImageView; 38 private OnExpandListener mOnExpandListener; 39 40 private boolean mIsExpanded = false; 41 private String mTitleContent = null; 42 43 /** A callback listener for expand state is changed by users. */ 44 public interface OnExpandListener { onExpand(boolean isExpanded)45 void onExpand(boolean isExpanded); 46 } 47 ExpandDividerPreference(Context context)48 public ExpandDividerPreference(Context context) { 49 this(context, /*attrs=*/ null); 50 } 51 ExpandDividerPreference(Context context, AttributeSet attrs)52 public ExpandDividerPreference(Context context, AttributeSet attrs) { 53 super(context, attrs); 54 setLayoutResource(R.layout.preference_expand_divider); 55 setKey(PREFERENCE_KEY); 56 } 57 58 @Override onBindViewHolder(PreferenceViewHolder view)59 public void onBindViewHolder(PreferenceViewHolder view) { 60 super.onBindViewHolder(view); 61 mTextView = (TextView) view.findViewById(R.id.expand_title); 62 mImageView = (ImageView) view.findViewById(R.id.expand_icon); 63 refreshState(); 64 } 65 66 @Override onClick()67 public void onClick() { 68 mIsExpanded = !mIsExpanded; 69 refreshState(); 70 if (mOnExpandListener != null) { 71 mOnExpandListener.onExpand(mIsExpanded); 72 } 73 } 74 setTitle(final String titleContent)75 void setTitle(final String titleContent) { 76 mTitleContent = titleContent; 77 if (mTextView != null) { 78 mTextView.postDelayed( 79 () -> mTextView.setText(titleContent), 50); 80 } 81 } 82 setIsExpanded(boolean isExpanded)83 void setIsExpanded(boolean isExpanded) { 84 mIsExpanded = isExpanded; 85 refreshState(); 86 } 87 setOnExpandListener(OnExpandListener listener)88 void setOnExpandListener(OnExpandListener listener) { 89 mOnExpandListener = listener; 90 } 91 refreshState()92 private void refreshState() { 93 final int iconId = 94 mIsExpanded 95 ? R.drawable.ic_settings_expand_less 96 : R.drawable.ic_settings_expand_more; 97 if (mImageView != null) { 98 mImageView.setImageResource(iconId); 99 } 100 setTitle(mTitleContent); 101 } 102 } 103