Delegate implementor

gistfile1.m

//
//  DSAppDelegate.m
//  Autoexpand
//
//  Created by James Dumay on 11/11/12.
//  Copyright (c) 2012 James Dumay. All rights reserved.
//

#import "DSAppDelegate.h"
#import "DSValue.h"

@implementation DSAppDelegate

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
    DSValue *value1 = [[DSValue alloc] initWithDisplayValue:@"AAA"];
    DSValue *value2 = [[DSValue alloc] initWithDisplayValue:@"BBB"];
    DSValue *value3 = [[DSValue alloc] initWithDisplayValue:@"CCC"];
    DSValue *value4 = [[DSValue alloc] initWithDisplayValue:@"DDD"];
    
    _values = [NSArray arrayWithObjects:value1, value2, value3, value3, value4, nil];
}

-(void)awakeFromNib
{
    [_autocomplete setDelegate:self];
}

- (NSString *)tokenField:(NSTokenField *)tokenField displayStringForRepresentedObject:(id)representedObject
{
    DSValue *value = representedObject;
    return value.displayValue;
}

- (id)tokenField:(NSTokenField *)tokenField representedObjectForEditingString:(NSString *)editingString
{
    for (int i = 0; i < _values.count; i++)
    {
        DSValue *value = [_values objectAtIndex:i];
        if ([value isEqualTo:editingString])
        {
            return value;
        }
    }
    return nil;
}

- (NSArray *)tokenField:(NSTokenField *)tokenField completionsForSubstring:(NSString *)substring indexOfToken:(NSInteger)tokenIndex indexOfSelectedItem:(NSInteger *)selectedIndex
{
    for (int i = 0; i < _values.count; i++)
    {
        DSValue *value = [_values objectAtIndex:i];
        if ([value.displayValue hasPrefix:substring])
        {
            return [[NSArray alloc] initWithObjects:value, nil];
        }
    }
    return nil;
}

@end