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      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 import android.widget.TextView;
     24 
     25 public class ProgressCategory extends ProgressCategoryBase {
     26 
     27     private boolean mProgress = false;
     28     private Preference mNoDeviceFoundPreference;
     29     private boolean mNoDeviceFoundAdded;
     30 
     31     public ProgressCategory(Context context, AttributeSet attrs) {
     32         super(context, attrs);
     33         setLayoutResource(R.layout.preference_progress_category);
     34     }
     35 
     36     @Override
     37     public void onBindView(View view) {
     38         super.onBindView(view);
     39         final TextView scanning = (TextView) view.findViewById(R.id.scanning_text);
     40         final View progressBar = view.findViewById(R.id.scanning_progress);
     41 
     42         scanning.setText(mProgress ? R.string.progress_scanning : R.string.progress_tap_to_pair);
     43         boolean noDeviceFound = (getPreferenceCount() == 0 ||
     44                 (getPreferenceCount() == 1 && getPreference(0) == mNoDeviceFoundPreference));
     45         scanning.setVisibility(noDeviceFound ? View.GONE : View.VISIBLE);
     46         progressBar.setVisibility(mProgress ? View.VISIBLE : View.GONE);
     47 
     48         if (mProgress || !noDeviceFound) {
     49             if (mNoDeviceFoundAdded) {
     50                 removePreference(mNoDeviceFoundPreference);
     51                 mNoDeviceFoundAdded = false;
     52             }
     53         } else {
     54             if (!mNoDeviceFoundAdded) {
     55                 if (mNoDeviceFoundPreference == null) {
     56                     mNoDeviceFoundPreference = new Preference(getContext());
     57                     mNoDeviceFoundPreference.setLayoutResource(R.layout.preference_empty_list);
     58                     mNoDeviceFoundPreference.setTitle(R.string.bluetooth_no_devices_found);
     59                     mNoDeviceFoundPreference.setSelectable(false);
     60                 }
     61                 addPreference(mNoDeviceFoundPreference);
     62                 mNoDeviceFoundAdded = true;
     63             }
     64         }
     65     }
     66 
     67     @Override
     68     public void setProgress(boolean progressOn) {
     69         mProgress = progressOn;
     70         notifyChanged();
     71     }
     72 }
     73