GridSampleConnectionController.m

/*
 
File: GridSampleConnectionController.m
 
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*/ 
 
#import "GridSampleConnectionController.h"
#import "GridSampleMainWindowController.h"
 
@interface GridSampleConnectionController (Private)
 
- (void)setConnection:(XGConnection *)connection;
- (void)setController:(XGController *)controller;
- (void)setMainWindowController:(GridSampleMainWindowController *)mainWindowController;
 
@end
 
@implementation GridSampleConnectionController
 
+ (id)connectionController;
{
    return [[[self alloc] init] autorelease];
}
 
- (id)init;
{
    self = [super init];
    
    if (self != nil) {
    
        [self setMainWindowController:[GridSampleMainWindowController mainWindowController]];
    }
    
    return self;
}
 
- (void)dealloc;
{
    [self setMainWindowController:nil];
    [self setConnection:nil];
    [self setController:nil];
    
    [super dealloc];
}
 
- (void)setConnectionWithNetServiceDomain:(NSString *)domain type:(NSString *)type name:(NSString *)name authenticator:(XGAuthenticator *)authenticator;
{
    _type = GridSampleConnectionControllerNetServiceType;
 
    NSNetService *netService = [[[NSNetService alloc] initWithDomain:domain type:type name:name] autorelease];
    
    XGConnection *connection = [[[XGConnection alloc] initWithNetService:netService] autorelease];
    
    [connection setAuthenticator:authenticator];
    
    XGController *controller = [[[XGController alloc] initWithConnection:connection] autorelease];
    
    [self setConnection:connection];
    [self setController:controller];
}
 
- (void)setConnectionWithHostname:(NSString *)hostname portnumber:(int)portnumber authenticator:(XGAuthenticator *)authenticator;
{
    _type = GridSampleConnectionControllerHostnameType;
    
    XGConnection *connection = [[[XGConnection alloc] initWithHostname:hostname portnumber:portnumber] autorelease];
    
    [connection setAuthenticator:authenticator];
    
    XGController *controller = [[[XGController alloc] initWithConnection:connection] autorelease];
    
    [self setConnection:connection];
    [self setController:controller];
}
 
#pragma mark *** Accessors ***
 
- (GridSampleConnectionControllerType)type;
{
    return _type;
}
 
- (NSString *)name;
{
    return [[self connection] name];
}
 
- (NSString *)servicePrincipal;
{
    NSString *servicePrincipal = [[self connection] servicePrincipal];
    
    if (servicePrincipal == nil) servicePrincipal = [NSString stringWithFormat:@"xgrid/%@", [self name]];
    
    return servicePrincipal;
}
 
- (XGConnection *)connection;
{
    return _connection;
}
 
- (XGController *)controller;
{
    return _controller;
}
 
- (GridSampleMainWindowController *)mainWindowController;
{
    return _mainWindowController;
}
 
#pragma mark *** Convenience methods ***
 
- (void)begin;
{
    [[[self mainWindowController] window] makeKeyAndOrderFront:self];
    
    [[self mainWindowController] performSelector:@selector(showConnectSheet) withObject:nil afterDelay:1.0];
}
 
#pragma mark *** Private methods ***
 
- (void)setConnection:(XGConnection *)connection;
{
    if (_connection != connection) {
        
        if ([_connection delegate] == self) {
            
            [_connection setDelegate:nil];
        }
                
        [_connection release];
        
        _connection = [connection retain];
        
        [_connection setDelegate:self];
    }
}
 
- (void)setController:(XGController *)controller;
{
    if (_controller != controller) {
        
        [_controller autorelease];
        _controller = [controller retain];
    }
}
 
- (void)setMainWindowController:(GridSampleMainWindowController *)mainWindowController;
{
    if (_mainWindowController != mainWindowController) {
    
        if ([_mainWindowController connectionController] == self) {
        
            [_mainWindowController setConnectionController:nil];
        }
        
        [_mainWindowController autorelease];
        _mainWindowController = [mainWindowController retain];
        
        [_mainWindowController setConnectionController:self];
    }
}
 
#pragma mark *** XGConnection delegate methods ***
 
- (void)connectionDidOpen:(XGConnection *)connection;
{
    _connectionDidOpen = YES;
 
    [[self mainWindowController] connectionDidOpen];
}
 
- (void)connectionDidClose:(XGConnection *)connection;
{
    // check for success
    if ([connection error] != nil && [[connection error] code] != 200) {
        
        // check for authentication errors
        if ([[connection error] code] == 530) {
            
            // authentication required; check for authenticator 
            if ([connection authenticator] == nil) {
                
                // no authenticator; request authentication from user
                [[self mainWindowController] connectionAuthenticationNeeded];
            }
            else {
                
                // authenticator; authentication wasn't sufficient
                [[self mainWindowController] connectionAuthenticationFailed];
            }
        }
        else if ([[connection error] code] == 535) {
            
            // authentication failure; show alert to user
            [[self mainWindowController] connectionAuthenticationFailed];
        }
        else {
            
            // unknown error; check if we opened
            if (_connectionDidOpen == NO) {
            
                // we never opened
                [[self mainWindowController] connectionDidNotOpen];
            }
            else {
            
                // we opened; this is a true close
                [[self mainWindowController] connectionDidClose];
            }
        }
    }
    else {
    
        [[self mainWindowController] connectionDidClose];
    }
    
    // the connection is not open
    _connectionDidOpen = NO;
}
 
@end