1 /* 2 * Copyright (C) 2009 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.calendar; 18 19 import android.app.Activity; 20 import android.app.AlertDialog; 21 import android.content.DialogInterface; 22 import android.widget.Button; 23 24 /** 25 * A helper class for editing the response to an invitation when the invitation 26 * is a repeating event. 27 */ 28 public class EditResponseHelper implements DialogInterface.OnClickListener { 29 private final Activity mParent; 30 private int mWhichEvents = -1; 31 private AlertDialog mAlertDialog; 32 33 /** 34 * This callback is passed in to this object when this object is created 35 * and is invoked when the "Ok" button is selected. 36 */ 37 private DialogInterface.OnClickListener mDialogListener; 38 EditResponseHelper(Activity parent)39 public EditResponseHelper(Activity parent) { 40 mParent = parent; 41 } 42 setOnClickListener(DialogInterface.OnClickListener listener)43 public void setOnClickListener(DialogInterface.OnClickListener listener) { 44 mDialogListener = listener; 45 } 46 getWhichEvents()47 public int getWhichEvents() { 48 return mWhichEvents; 49 } 50 onClick(DialogInterface dialog, int which)51 public void onClick(DialogInterface dialog, int which) { 52 } 53 54 /** 55 * This callback is used when a list item is selected 56 */ 57 private DialogInterface.OnClickListener mListListener = 58 new DialogInterface.OnClickListener() { 59 public void onClick(DialogInterface dialog, int which) { 60 mWhichEvents = which; 61 62 // Enable the "ok" button now that the user has selected which 63 // events in the series to delete. 64 Button ok = mAlertDialog.getButton(DialogInterface.BUTTON_POSITIVE); 65 ok.setEnabled(true); 66 } 67 }; 68 showDialog(int whichEvents)69 public void showDialog(int whichEvents) { 70 // We need to have a non-null listener, otherwise we get null when 71 // we try to fetch the "Ok" button. 72 if (mDialogListener == null) { 73 mDialogListener = this; 74 } 75 AlertDialog dialog = new AlertDialog.Builder(mParent) 76 .setTitle(R.string.change_response_title) 77 .setIcon(android.R.drawable.ic_dialog_alert) 78 .setSingleChoiceItems(R.array.change_response_labels, whichEvents, 79 mListListener) 80 .setPositiveButton(android.R.string.ok, mDialogListener) 81 .setNegativeButton(android.R.string.cancel, null) 82 .show(); 83 mAlertDialog = dialog; 84 85 if (whichEvents == -1) { 86 // Disable the "Ok" button until the user selects which events to 87 // delete. 88 Button ok = dialog.getButton(DialogInterface.BUTTON_POSITIVE); 89 ok.setEnabled(false); 90 } 91 } 92 } 93