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      1 /*
      2  * Copyright (C) 2007 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.mms.ui;
     18 
     19 import android.app.AlertDialog;
     20 import android.content.Context;
     21 import android.content.DialogInterface;
     22 import android.content.DialogInterface.OnClickListener;
     23 import android.os.Bundle;
     24 import android.view.LayoutInflater;
     25 import android.view.View;
     26 import android.widget.NumberPicker;
     27 
     28 import com.android.mms.R;
     29 
     30 /**
     31  * A dialog that prompts the user for the message deletion limits.
     32  */
     33 public class NumberPickerDialog extends AlertDialog implements OnClickListener {
     34     private static final String NUMBER = "number";
     35 
     36     /**
     37      * The callback interface used to indicate the user is done filling in
     38      * the time (they clicked on the 'Set' button).
     39      */
     40     public interface OnNumberSetListener {
     41 
     42         /**
     43          * @param number The number that was set.
     44          */
     45         void onNumberSet(int number);
     46     }
     47 
     48     private final NumberPicker mNumberPicker;
     49     private final OnNumberSetListener mCallback;
     50 
     51     /**
     52      * @param context Parent.
     53      * @param callBack How parent is notified.
     54      * @param number The initial number.
     55      */
     56     public NumberPickerDialog(Context context,
     57             OnNumberSetListener callBack,
     58             int number,
     59             int rangeMin,
     60             int rangeMax,
     61             int title) {
     62         this(context, AlertDialog.THEME_HOLO_LIGHT, callBack, number, rangeMin, rangeMax, title);
     63     }
     64 
     65     /**
     66      * @param context Parent.
     67      * @param theme the theme to apply to this dialog
     68      * @param callBack How parent is notified.
     69      * @param number The initial number.
     70      */
     71     public NumberPickerDialog(Context context,
     72             int theme,
     73             OnNumberSetListener callBack,
     74             int number,
     75             int rangeMin,
     76             int rangeMax,
     77             int title) {
     78         super(context, theme);
     79         mCallback = callBack;
     80 
     81         setTitle(title);
     82 
     83         setButton(DialogInterface.BUTTON_POSITIVE, context.getText(R.string.set), this);
     84         setButton(DialogInterface.BUTTON_NEGATIVE, context.getText(R.string.no),
     85                 (OnClickListener) null);
     86 
     87         LayoutInflater inflater =
     88                 (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     89         View view = inflater.inflate(R.layout.number_picker_dialog, null);
     90         setView(view);
     91         mNumberPicker = (NumberPicker) view.findViewById(R.id.number_picker);
     92 
     93         // initialize state
     94         mNumberPicker.setMinValue(rangeMin);
     95         mNumberPicker.setMaxValue(rangeMax);
     96         mNumberPicker.setValue(number);
     97         mNumberPicker.setOnLongPressUpdateInterval(100); // make the repeat rate three times as fast
     98                                                          // as normal since the range is so large.
     99         mNumberPicker.setWrapSelectorWheel(false);       // don't wrap from min->max
    100     }
    101 
    102     public void onClick(DialogInterface dialog, int which) {
    103         if (mCallback != null) {
    104             mNumberPicker.clearFocus();
    105             mCallback.onNumberSet(mNumberPicker.getValue());
    106             dialog.dismiss();
    107         }
    108     }
    109 
    110     @Override
    111     public Bundle onSaveInstanceState() {
    112         Bundle state = super.onSaveInstanceState();
    113         state.putInt(NUMBER, mNumberPicker.getValue());
    114         return state;
    115     }
    116 
    117     @Override
    118     public void onRestoreInstanceState(Bundle savedInstanceState) {
    119         super.onRestoreInstanceState(savedInstanceState);
    120         int number = savedInstanceState.getInt(NUMBER);
    121         mNumberPicker.setValue(number);
    122     }
    123 }
    124