/*

File: GridSampleServiceBrowser.m

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*/ 

#import "GridSampleServiceBrowser.h"

NSString *GridSampleServiceType = @"_xgrid._tcp";

@implementation GridSampleServiceBrowser

- (id)initWithDomain:(NSString *)domain;

{

    self = [super init];

    if (self != nil) {

        _domain = [domain copy];

        _netServiceBrowser = [[NSNetServiceBrowser alloc] init];

        if (_netServiceBrowser == nil) {

            [self autorelease];

            return nil;

        }

        [_netServiceBrowser setDelegate:self];

        _netServices = [[NSMutableArray alloc] init];

    }

    return self;

}

- (id)init;

{

    return [self initWithDomain:@""];

}

- (void)dealloc;

{

    [_domain release];

    [_netServiceBrowser release];

    [_netServices release];

    [super dealloc];

}

- (NSString *)domain;

{

    return _domain;

}

- (unsigned int)countOfNetServices;

{

    return [_netServices count];

}

- (id)objectInNetServicesAtIndex:(unsigned int)index;

{

    return [_netServices objectAtIndex:index];

}

- (void)insertObject:(id)object inNetServicesAtIndex:(unsigned int)index;

{

    [_netServices insertObject:object atIndex:index];

}

- (void)removeObjectFromNetServicesAtIndex:(unsigned int)index;

{

    [_netServices removeObjectAtIndex:index];

}

- (void)replaceObjectInNetServicesAtIndex:(unsigned int)index withObject:(id)object;

{

    [_netServices replaceObjectAtIndex:index withObject:object];

}

- (NSNetService *)netServiceWithName:(NSString *)name;

{

    NSEnumerator *enumerator = [_netServices objectEnumerator];

    id netService;

    while (netService = [enumerator nextObject]) {

        if ([name isEqualToString:[netService name]] == YES) {

            return [[netService retain] autorelease];

        }

    }

    return nil;

}

- (void)browse;

{

    if (_didStart == NO) {

        [_netServices removeAllObjects];

        [_netServiceBrowser searchForServicesOfType:GridSampleServiceType inDomain:_domain];

        _didStart = YES;

    }

}

- (void)stop;

{

    if (_didStart == YES) {

        [_netServiceBrowser stop];

        _didStart = NO;

    }

}

- (void)netServiceBrowserWillSearch:(NSNetServiceBrowser *)netServiceBrowser;

{

    // ignored

}

- (void)netServiceBrowser:(NSNetServiceBrowser *)aNetServiceBrowser

             didNotSearch:(NSDictionary *)errorDict;

{

    if (_didStart == YES) {

        _didStart = NO;

    }

}

- (void)netServiceBrowser:(NSNetServiceBrowser *)netServiceBrowser

           didFindService:(NSNetService *)netService

               moreComing:(BOOL)moreComing;

{

    [self insertObject:netService inNetServicesAtIndex:[self countOfNetServices]];

}

- (void)netServiceBrowser:(NSNetServiceBrowser *)netServiceBrowser

         didRemoveService:(NSNetService *)netService

               moreComing:(BOOL)moreComing;

{

    int i = [self countOfNetServices];

    while (i--) {

        NSNetService *currentNetService = [self objectInNetServicesAtIndex:i];

        if ([[currentNetService name] isEqualToString:[netService name]] == YES) {

            [self removeObjectFromNetServicesAtIndex:i];

            break;

        }

    }

}

@end