/*

File: ImageClient.h

Abstract: CFNetwork ImageClient Sample

Version: 1.0

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*/ 

#import <Cocoa/Cocoa.h>

@class CFNetworkLoader, NSURLLoader;

@interface ImageClient : NSObject

{

    // Connections to our UI

    IBOutlet NSImageView *imageView;

    IBOutlet NSTextField *urlField;

    // Connections to the sheet that prompts for user/pass

    IBOutlet NSWindow *authSheet;

    IBOutlet NSTextField *authPrompt;

    IBOutlet NSTextField *userField;

    IBOutlet NSTextField *passField;

    IBOutlet NSTextField *realmPrompt;

    IBOutlet NSTextField *realmField;

    IBOutlet NSTextField *accountDomainField;

    IBOutlet NSButton* saveSwitch;

    // Repeating, 15 second timer that causes us to refetch the image displayed

    NSTimer *reloadTimer; 

    // Whether to use the CFNetwork loader versus the Foundation Loader

    BOOL useCFNetworkLoader;

    // Whether we're waiting for user credentials

    BOOL waitingForCredentials;

    // The two loader objects

    CFNetworkLoader *cfnetworkLoader;

    NSURLLoader *nsurlLoader;

}

// start and stop the timer

- (void)startTimer;

- (void)stopTimer;

// The timer's callback

- (void)refetch:(NSTimer *)timer;

// action method for the URL text field

- (IBAction)newURL:(id)sender;

// start and stop individual loads

- (void)startLoad;

- (void)cancelLoad;

// Called by the two loaders to report their progress

- (void)setImageData:(NSData *)imageData;

- (void)errorOccurredLoadingImage:(CFNetDiagnosticRef)diagnostics;

// Called by the two loaders to prompt for credentials

- (void)authorizationNeededForRealm:(NSString *)realm onHost:(NSString *)host isProxy:(BOOL)isProxy;

// action method for the buttons on the authentication dialog

- (IBAction)dismissAuthSheet:(id)sender;

// delegate call for the authentication sheet dropped in -authorizationNeededForRealm:onHost:

- (void)authSheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo;

// Called by the two loaders to get authorization information

- (NSString *)username;

- (NSString *)password;

- (NSString *)accountDomain;

// delegate call for the diagnostic sheet dropped in -errorOccurredLoadingImage:

- (void)errorSheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode contextInfo:(void *)contextInfo;

- (BOOL)saveCredentials;

@end