/*File: DataController.mAbstract:A simple controller class responsible for managing the application's data.Typically this object would be able to load and save a file containing theappliction's data. This example illustrates just the basic minimum: it createsan array containing information about some plays and provides simple accessormethods for the array and its contents.Version: 2.6Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Inc.("Apple") in consideration of your agreement to the following terms, and youruse, installation, modification or redistribution of this Apple softwareconstitutes acceptance of these terms.  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All Rights Reserved.*/#import "DataController.h"@interface DataController ()@property (nonatomic, copy, readwrite) NSMutableArray *list;- (void)createDemoData;@end@implementation DataController@synthesize list;- (id)init {    if (self = [super init]) {        [self createDemoData];    }    return self;}// Custom set accessor to ensure the new list is mutable- (void)setList:(NSMutableArray *)newList {    if (list != newList) {        [list release];        list = [newList mutableCopy];    }}// Accessor methods for list- (unsigned)countOfList {    return [list count];}- (id)objectInListAtIndex:(unsigned)theIndex {    return [list objectAtIndex:theIndex];}- (void)dealloc {    [list release];    [super dealloc];}- (void)createDemoData {        /*     Create an array containing some demonstration data.     Each data item is a dicionary that contains information about a play -- its list of characters, its genre, and its year of publication.  Typically the data would be comprised of instances of custom classes rather than dictionaries, but using dictionaries means fewer distractions in the example.     */        NSMutableArray *playList = [[NSMutableArray alloc] init];    NSMutableDictionary *dictionary;    NSMutableDictionary *characters;    NSDateComponents *dateComponents = [[NSDateComponents alloc] init];    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];    NSDate *date;        characters = [[NSArray alloc] initWithObjects:@"Antony", @"Artemidorus", @"Brutus", @"Caesar", @"Calpurnia", @"Casca", @"Cassius", @"Cicero", @"Cinna", @"Cinna the Poet", @"Citizens", @"Claudius", @"Clitus", @"Dardanius", @"Decius Brutus", @"First Citizen", @"First Commoner", @"First Soldier", @"Flavius", @"Fourth Citizen", @"Lepidus", @"Ligarius", @"Lucilius", @"Lucius", @"Marullus", @"Messala", @"Messenger", @"Metellus Cimber", @"Octavius", @"Pindarus", @"Poet", @"Popilius", @"Portia", @"Publius", @"Second Citizen", @"Second Commoner", @"Second Soldier", @"Servant", @"Soothsayer", @"Strato", @"Third Citizen", @"Third Soldier", @"Tintinius", @"Trebonius", @"Varro", @"Volumnius", @"Young Cato", nil];    [dateComponents setYear:1599];    date = [calendar dateFromComponents:dateComponents];    dictionary = [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Julius Caesar", @"title", characters, @"mainCharacters", date, @"date", @"Tragedy", @"genre", nil];    [playList addObject:dictionary];    [dictionary release];    [characters release];        characters = [[NSArray alloc] initWithObjects:@"Captain", @"Cordelia", @"Curan", @"Doctor", @"Duke of Albany", @"Duke of Burgundy", @"Duke of Cornwall", @"Earl of Gloucester", @"Earl of Kent", @"Edgar", @"Edmund", @"Fool", @"Gentleman", @"Goneril", @"Herald", @"King of France", @"Knight", @"Lear", @"Messenger", @"Old Man", @"Oswald", @"Regan", @"Servant 1", @"Servant 2", @"Servant 3", nil];    [dateComponents setYear:1605];    date = [calendar dateFromComponents:dateComponents];    dictionary = [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"King Lear", @"title", characters, @"mainCharacters", date, @"date", @"Tragedy", @"genre", nil];    [playList addObject:dictionary];    [dictionary release];    [characters release];        characters = [[NSArray alloc] initWithObjects:@"Bianca", @"Brabantio", @"Cassio", @"Clown", @"Desdemona", @"Duke of Venice", @"Emilia", @"First Gentleman", @"First Musician", @"First Officer", @"First Senator", @"Fourth Gentleman", @"Gentleman", @"Gratiano", @"Herald", @"Iago", @"Lodovico, Kinsman to Brabantio", @"Messenger", @"Montano", @"Othello", @"Roderigo", @"Sailor", @"Second Gentleman", @"Second Senator", @"Third Gentleman", nil];    [dateComponents setYear:1604];    date = [calendar dateFromComponents:dateComponents];    dictionary = [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Othello", @"title", characters, @"mainCharacters", date, @"date", @"Tragedy", @"genre", nil];    [playList addObject:dictionary];    [dictionary release];    [characters release];        characters = [[NSArray alloc] initWithObjects:@"Archbishop Scroop", @"Blunt", @"Carrier", @"Chamberlain", @"Earl of Douglas", @"Earl of Northumberland", @"Earl of Westmoreland", @"Earl of Worcester", @"Edward Poins", @"Falstaff", @"First Carrier", @"First Traveller", @"Francis", @"Gadshill", @"Glendower", @"Henry IV", @"Henry V", @"Hostess Quickly", @"Hotspur (Henry Percy)", @"Lady Percy", @"Lord Bardolph", @"Messenger", @"Mortimer", @"Ostler", @"Peto", @"Prince John, of Lancaster", @"Second Carrier", @"Servant", @"Sheriff", @"Sir Michael", @"Vernon", @"Vintner", nil];    [dateComponents setYear:1597];    date = [calendar dateFromComponents:dateComponents];    dictionary = [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"Henry IV, Pt 1", @"title", characters, @"mainCharacters", date, @"date", @"History", @"genre", nil];    [playList addObject:dictionary];    [dictionary release];    [characters release];        characters = [[NSArray alloc] initWithObjects:@"Adrian", @"Alonso", @"Antonio", @"Ariel", @"Boatswain", @"Caliban", @"Ceres", @"Ferdinand", @"Francisco", @"Gonzalo", @"Iris", @"Juno", @"Master", @"Miranda", @"Prospero", @"Sebastian", @"Stephano", @"Trinculo", nil];    [dateComponents setYear:1611];    date = [calendar dateFromComponents:dateComponents];    dictionary = [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"The Tempest", @"title", characters, @"mainCharacters", date, @"date", @"Comedy", @"genre", nil];    [playList addObject:dictionary];    [dictionary release];    [characters release];        self.list = playList;    [playList release];    [dateComponents release];    [calendar release];}@end