1 /* 2 * Copyright (C) 2008 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.settings; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.view.View; 22 23 import androidx.preference.Preference; 24 import androidx.preference.PreferenceViewHolder; 25 26 /** 27 * A category with a progress spinner 28 */ 29 public class ProgressCategory extends ProgressCategoryBase { 30 31 private int mEmptyTextRes; 32 private boolean mProgress = false; 33 private Preference mNoDeviceFoundPreference; 34 private boolean mNoDeviceFoundAdded; 35 ProgressCategory(Context context)36 public ProgressCategory(Context context) { 37 super(context); 38 setLayoutResource(R.layout.preference_progress_category); 39 } 40 ProgressCategory(Context context, AttributeSet attrs)41 public ProgressCategory(Context context, AttributeSet attrs) { 42 super(context, attrs); 43 setLayoutResource(R.layout.preference_progress_category); 44 } 45 ProgressCategory(Context context, AttributeSet attrs, int defStyleAttr)46 public ProgressCategory(Context context, AttributeSet attrs, 47 int defStyleAttr) { 48 super(context, attrs, defStyleAttr); 49 setLayoutResource(R.layout.preference_progress_category); 50 } 51 ProgressCategory(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)52 public ProgressCategory(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 53 super(context, attrs, defStyleAttr, defStyleRes); 54 setLayoutResource(R.layout.preference_progress_category); 55 } 56 setEmptyTextRes(int emptyTextRes)57 public void setEmptyTextRes(int emptyTextRes) { 58 mEmptyTextRes = emptyTextRes; 59 } 60 61 @Override onBindViewHolder(PreferenceViewHolder view)62 public void onBindViewHolder(PreferenceViewHolder view) { 63 super.onBindViewHolder(view); 64 final View progressBar = view.findViewById(R.id.scanning_progress); 65 66 boolean noDeviceFound = (getPreferenceCount() == 0 || 67 (getPreferenceCount() == 1 && getPreference(0) == mNoDeviceFoundPreference)); 68 progressBar.setVisibility(mProgress ? View.VISIBLE : View.GONE); 69 70 if (mProgress || !noDeviceFound) { 71 if (mNoDeviceFoundAdded) { 72 removePreference(mNoDeviceFoundPreference); 73 mNoDeviceFoundAdded = false; 74 } 75 } else { 76 if (!mNoDeviceFoundAdded) { 77 if (mNoDeviceFoundPreference == null) { 78 mNoDeviceFoundPreference = new Preference(getContext()); 79 mNoDeviceFoundPreference.setLayoutResource(R.layout.preference_empty_list); 80 mNoDeviceFoundPreference.setTitle(mEmptyTextRes); 81 mNoDeviceFoundPreference.setSelectable(false); 82 } 83 addPreference(mNoDeviceFoundPreference); 84 mNoDeviceFoundAdded = true; 85 } 86 } 87 } 88 89 @Override setProgress(boolean progressOn)90 public void setProgress(boolean progressOn) { 91 mProgress = progressOn; 92 notifyChanged(); 93 } 94 } 95