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.content.DialogInterface.OnDismissListener; 23 import android.widget.Button; 24 25 /** 26 * A helper class for editing the response to an invitation when the invitation 27 * is a repeating event. 28 */ 29 public class EditResponseHelper implements DialogInterface.OnClickListener, OnDismissListener { 30 private final Activity mParent; 31 private int mWhichEvents = -1; 32 private AlertDialog mAlertDialog; 33 private boolean mClickedOk = false; 34 35 /** 36 * This callback is passed in to this object when this object is created 37 * and is invoked when the "Ok" button is selected. 38 */ 39 private DialogInterface.OnClickListener mDialogListener; 40 EditResponseHelper(Activity parent)41 public EditResponseHelper(Activity parent) { 42 mParent = parent; 43 } 44 setOnClickListener(DialogInterface.OnClickListener listener)45 public void setOnClickListener(DialogInterface.OnClickListener listener) { 46 mDialogListener = listener; 47 } 48 49 /** 50 * @return whichEvents, representing which events were selected on which to 51 * apply the response: 52 * -1 means no choice selected, or the dialog was 53 * canceled. 54 * 0 means just the single event. 55 * 1 means all events. 56 */ getWhichEvents()57 public int getWhichEvents() { 58 return mWhichEvents; 59 } 60 setWhichEvents(int which)61 public void setWhichEvents(int which) { 62 mWhichEvents = which; 63 } 64 65 @Override onClick(DialogInterface dialog, int which)66 public void onClick(DialogInterface dialog, int which) { 67 setClickedOk(true); 68 } 69 70 @Override onDismiss(DialogInterface dialog)71 public void onDismiss(DialogInterface dialog) { 72 // If the click was not "OK", clear out whichEvents to represent 73 // that the dialog was canceled. 74 if (!getClickedOk()) { 75 setWhichEvents(-1); 76 } 77 setClickedOk(false); 78 79 // Call the pre-set dismiss listener too. 80 if (mDismissListener != null) { 81 mDismissListener.onDismiss(dialog); 82 } 83 84 } 85 getClickedOk()86 private boolean getClickedOk() { 87 return mClickedOk; 88 } 89 setClickedOk(boolean clickedOk)90 private void setClickedOk(boolean clickedOk) { 91 mClickedOk = clickedOk; 92 } 93 94 /** 95 * This callback is used when a list item is selected 96 */ 97 private DialogInterface.OnClickListener mListListener = 98 new DialogInterface.OnClickListener() { 99 public void onClick(DialogInterface dialog, int which) { 100 mWhichEvents = which; 101 102 // Enable the "ok" button now that the user has selected which 103 // events in the series to delete. 104 Button ok = mAlertDialog.getButton(DialogInterface.BUTTON_POSITIVE); 105 ok.setEnabled(true); 106 } 107 }; 108 109 private DialogInterface.OnDismissListener mDismissListener; 110 111 112 /** 113 * Set the dismiss listener to be called when the dialog is ended. There, 114 * use getWhichEvents() to see how the dialog was dismissed; if it returns 115 * -1, the dialog was canceled out. If it is not -1, it's the index of 116 * which events the user wants to respond to. 117 * @param onDismissListener 118 */ setDismissListener(OnDismissListener onDismissListener)119 public void setDismissListener(OnDismissListener onDismissListener) { 120 mDismissListener = onDismissListener; 121 } 122 showDialog(int whichEvents)123 public void showDialog(int whichEvents) { 124 // We need to have a non-null listener, otherwise we get null when 125 // we try to fetch the "Ok" button. 126 if (mDialogListener == null) { 127 mDialogListener = this; 128 } 129 AlertDialog dialog = new AlertDialog.Builder(mParent).setTitle( 130 R.string.change_response_title).setIconAttribute(android.R.attr.alertDialogIcon) 131 .setSingleChoiceItems(R.array.change_response_labels, whichEvents, mListListener) 132 .setPositiveButton(android.R.string.ok, mDialogListener) 133 .setNegativeButton(android.R.string.cancel, null).show(); 134 // The caller may set a dismiss listener to hear back when the dialog is 135 // finished. Use getWhichEvents() to see how the dialog was dismissed. 136 dialog.setOnDismissListener(this); 137 mAlertDialog = dialog; 138 139 if (whichEvents == -1) { 140 // Disable the "Ok" button until the user selects which events to 141 // delete. 142 Button ok = dialog.getButton(DialogInterface.BUTTON_POSITIVE); 143 ok.setEnabled(false); 144 } 145 } 146 dismissAlertDialog()147 public void dismissAlertDialog() { 148 if (mAlertDialog != null) { 149 mAlertDialog.dismiss(); 150 } 151 } 152 153 } 154