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 */ 16package com.android.emergency.preferences; 17 18import android.content.Context; 19import android.content.res.TypedArray; 20import android.support.v7.preference.Preference; 21import android.support.v7.preference.PreferenceViewHolder; 22import android.text.TextUtils; 23import android.util.AttributeSet; 24import android.view.View; 25import android.widget.TextView; 26 27import com.android.emergency.R; 28import com.android.emergency.ReloadablePreferenceInterface; 29import com.android.settingslib.CustomEditTextPreference; 30 31/** 32 * Custom {@link EditTextPreference} that allows us to refresh and update the summary. 33 */ 34public class EmergencyEditTextPreference extends CustomEditTextPreference 35 implements Preference.OnPreferenceChangeListener, ReloadablePreferenceInterface { 36 37 private static final int MAX_LINES = 50; 38 39 public EmergencyEditTextPreference(Context context, AttributeSet attrs) { 40 super(context, attrs); 41 TypedArray a = context.obtainStyledAttributes( 42 attrs, R.styleable.EmergencyEditTextPreference, 0, 0); 43 if (a.hasValue(R.styleable.EmergencyEditTextPreference_summary)) { 44 setSummary(a.getString(R.styleable.EmergencyEditTextPreference_summary)); 45 } 46 a.recycle(); 47 } 48 49 @Override 50 public void reloadFromPreference() { 51 setText(getPersistedString("")); 52 } 53 54 @Override 55 public boolean isNotSet() { 56 return TextUtils.isEmpty(getText()); 57 } 58 59 @Override 60 public CharSequence getSummary() { 61 String text = getText(); 62 return TextUtils.isEmpty(text) ? super.getSummary() : text; 63 } 64 65 @Override 66 public void onBindViewHolder(PreferenceViewHolder holder) { 67 super.onBindViewHolder(holder); 68 final TextView summaryView = (TextView) holder.findViewById( 69 com.android.internal.R.id.summary); 70 summaryView.setMaxLines(MAX_LINES); 71 } 72 73 @Override 74 public boolean onPreferenceChange(Preference preference, Object newValue) { 75 String text = (String) newValue; 76 setSummary(text); 77 return true; 78 } 79 80 @Override 81 protected void onBindDialogView(View view) { 82 super.onBindDialogView(view); 83 getEditText().setSelection(getEditText().getText().length()); 84 } 85} 86