Libraries/QBrowser.h

/*
    File:       QBrowser.h
 
    Contains:   Manages a Bonjour browse operation.
 
    Written by: DTS
 
    Copyright:  Copyright (c) 2011 Apple Inc. All Rights Reserved.
 
    Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
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                original Apple software (the "Apple Software"), to use,
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*/
 
#import <Foundation/Foundation.h>
 
// QBrowser is a general purpose class for browsing Bonjour services.
// 
// The class is run loop based and must be called from a single thread. 
// Specifically, the -start and -stop methods add and remove run loop sources 
// to the current thread's run loop, and it's that thread that calls the 
// delegate callbacks.
 
@protocol QBrowserDelegate;
 
@interface QBrowser : NSObject
 
- (id)initWithDomain:(NSString *)domain type:(NSString *)type;
    // type must not be nil
    // domain of nil implies domain of @"" implies browse in default domains
 
// properties set by the init method
 
@property (nonatomic, copy,   readonly ) NSString * domain;
@property (nonatomic, copy,   readonly ) NSString * type;
 
// properties that can be set any time
 
@property (nonatomic, assign, readwrite) id<QBrowserDelegate> delegate;
 
// properties that are set as the browser executes
 
@property (nonatomic, copy,   readonly ) NSSet *    services;       // observable, of NSNetService
@property (nonatomic, assign, readonly ) BOOL       isStarted;      // observable
 
// run loop modes
 
// IMPORTANT: You can't add or remove run loop modes while the browser is running.
 
- (void)addRunLoopMode:(NSString *)modeToAdd;
- (void)removeRunLoopMode:(NSString *)modeToRemove;
 
@property (nonatomic, copy,   readonly ) NSSet *    runLoopModes;   // contains NSDefaultRunLoopMode by default
 
// actions
 
// It is reasonable to start and stop the same browser object multiple times.
 
- (void)start;
    // Starts the browser.  It's not legal to call this if the browser is started.
 
- (void)stop;
    // Does nothing if the brower is already stopped.  This does not call 
    // -browser:didStopWithError:.
 
@end
 
@protocol QBrowserDelegate <NSObject>
 
@optional
 
- (void)browser:(QBrowser *)browser didStopWithError:(NSError *)error;
    // Called when some underlying network failure has caused the browser to stop 
    // spontaneously.
 
@end