/*

 File: Controller.h

 Abstract: Controller manages the download of updates to the application.  It demonstrates the use of NSURLConnection and NSURLDownload.

 Version: 1.0

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 */

#import <Cocoa/Cocoa.h>

@interface Controller : NSObject {

    id versionField;

    id progressPanel;

    id progressIndicator;

    id progressField;

    NSURLConnection *updateConnection;

    NSURLResponse *connectionResponse;

    NSMutableData *connectionData;

    NSURLDownload *updateDownload;

    NSURLResponse *downloadResponse;

    NSString *downloadPath;

    unsigned downloadBytes;

}

/* Action Methods */

- (void)checkForUpdates:(id)sender;

- (void)cancelUpdate:(id)sender;

/* Connection Management Methods */

- (void)startUpdateConnection:(NSURL *)url;

- (void)endUpdateConnection;

- (BOOL)presentConnectionSuccess:(NSString *)name;

- (void)presentConnectionError;

/* NSURLConnection Delegate Methods */

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response;

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data;

- (void)connectionDidFinishLoading:(NSURLConnection *)connection;

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error;

/* Download Management Methods */

- (void)startUpdateDownload:(NSURL *)url;

- (void)endUpdateDownload;

- (void)presentDownloadSuccess;

- (void)presentDownloadError;

/* NSURLDownload Delegate Methods */

- (void)download:(NSURLDownload *)download didReceiveResponse:(NSURLResponse *)response;

- (void)download:(NSURLDownload *)download didReceiveDataOfLength:(unsigned)length;

- (void)downloadDidFinish:(NSURLDownload *)download;

- (void)download:(NSURLDownload *)download didFailWithError:(NSError *)error;

@end