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.support.v7.preference.Preference; 21 import android.support.v7.preference.PreferenceViewHolder; 22 import android.util.AttributeSet; 23 import android.view.View; 24 25 /** 26 * A category with a progress spinner 27 */ 28 public class ProgressCategory extends ProgressCategoryBase { 29 30 private int mEmptyTextRes; 31 private boolean mProgress = false; 32 private Preference mNoDeviceFoundPreference; 33 private boolean mNoDeviceFoundAdded; 34 ProgressCategory(Context context)35 public ProgressCategory(Context context) { 36 super(context); 37 setLayoutResource(R.layout.preference_progress_category); 38 } 39 ProgressCategory(Context context, AttributeSet attrs)40 public ProgressCategory(Context context, AttributeSet attrs) { 41 super(context, attrs); 42 setLayoutResource(R.layout.preference_progress_category); 43 } 44 ProgressCategory(Context context, AttributeSet attrs, int defStyleAttr)45 public ProgressCategory(Context context, AttributeSet attrs, 46 int defStyleAttr) { 47 super(context, attrs, defStyleAttr); 48 setLayoutResource(R.layout.preference_progress_category); 49 } 50 ProgressCategory(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)51 public ProgressCategory(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 52 super(context, attrs, defStyleAttr, defStyleRes); 53 setLayoutResource(R.layout.preference_progress_category); 54 } 55 setEmptyTextRes(int emptyTextRes)56 public void setEmptyTextRes(int emptyTextRes) { 57 mEmptyTextRes = emptyTextRes; 58 } 59 60 @Override onBindViewHolder(PreferenceViewHolder view)61 public void onBindViewHolder(PreferenceViewHolder view) { 62 super.onBindViewHolder(view); 63 final View progressBar = view.findViewById(R.id.scanning_progress); 64 65 boolean noDeviceFound = (getPreferenceCount() == 0 || 66 (getPreferenceCount() == 1 && getPreference(0) == mNoDeviceFoundPreference)); 67 progressBar.setVisibility(mProgress ? View.VISIBLE : View.GONE); 68 69 if (mProgress || !noDeviceFound) { 70 if (mNoDeviceFoundAdded) { 71 removePreference(mNoDeviceFoundPreference); 72 mNoDeviceFoundAdded = false; 73 } 74 } else { 75 if (!mNoDeviceFoundAdded) { 76 if (mNoDeviceFoundPreference == null) { 77 mNoDeviceFoundPreference = new Preference(getContext()); 78 mNoDeviceFoundPreference.setLayoutResource(R.layout.preference_empty_list); 79 mNoDeviceFoundPreference.setTitle(mEmptyTextRes); 80 mNoDeviceFoundPreference.setSelectable(false); 81 } 82 addPreference(mNoDeviceFoundPreference); 83 mNoDeviceFoundAdded = true; 84 } 85 } 86 } 87 88 @Override setProgress(boolean progressOn)89 public void setProgress(boolean progressOn) { 90 mProgress = progressOn; 91 notifyChanged(); 92 } 93 } 94