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