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 public class ProgressCategory extends ProgressCategoryBase { 25 26 private final int mEmptyTextRes; 27 private boolean mProgress = false; 28 private Preference mNoDeviceFoundPreference; 29 private boolean mNoDeviceFoundAdded; 30 ProgressCategory(Context context, AttributeSet attrs, int emptyTextRes)31 public ProgressCategory(Context context, AttributeSet attrs, 32 int emptyTextRes) { 33 super(context, attrs); 34 setLayoutResource(R.layout.preference_progress_category); 35 mEmptyTextRes = emptyTextRes; 36 } 37 38 @Override onBindView(View view)39 public void onBindView(View view) { 40 super.onBindView(view); 41 final View progressBar = view.findViewById(R.id.scanning_progress); 42 43 boolean noDeviceFound = (getPreferenceCount() == 0 || 44 (getPreferenceCount() == 1 && getPreference(0) == mNoDeviceFoundPreference)); 45 progressBar.setVisibility(mProgress ? View.VISIBLE : View.GONE); 46 47 if (mProgress || !noDeviceFound) { 48 if (mNoDeviceFoundAdded) { 49 removePreference(mNoDeviceFoundPreference); 50 mNoDeviceFoundAdded = false; 51 } 52 } else { 53 if (!mNoDeviceFoundAdded) { 54 if (mNoDeviceFoundPreference == null) { 55 mNoDeviceFoundPreference = new Preference(getContext()); 56 mNoDeviceFoundPreference.setLayoutResource(R.layout.preference_empty_list); 57 mNoDeviceFoundPreference.setTitle(mEmptyTextRes); 58 mNoDeviceFoundPreference.setSelectable(false); 59 } 60 addPreference(mNoDeviceFoundPreference); 61 mNoDeviceFoundAdded = true; 62 } 63 } 64 } 65 66 @Override setProgress(boolean progressOn)67 public void setProgress(boolean progressOn) { 68 mProgress = progressOn; 69 notifyChanged(); 70 } 71 } 72