(root)/iphone/common : /source/BonjourSupport/BonjourBrowser.m (revision 100)

/*

     File: BonjourBrowser.m

 Abstract:  A subclass of UINavigationController that handles the UI needed for a user to

browse for Bonjour services.

 It contains list view controllers for domains and service instances.

 It allows the user to add their own domains.

  Version: 2.8

 Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple

 Inc. ("Apple") in consideration of your agreement to the following

 terms, and your use, installation, modification or redistribution of

 this Apple software constitutes acceptance of these terms.  If you do

 not agree with these terms, please do not use, install, modify or

 redistribute this Apple software.

 In consideration of your agreement to abide by the following terms, and

 subject to these terms, Apple grants you a personal, non-exclusive

 license, under Apple's copyrights in this original Apple software (the

 "Apple Software"), to use, reproduce, modify and redistribute the Apple

 Software, with or without modifications, in source and/or binary forms;

 provided that if you redistribute the Apple Software in its entirety and

 without modifications, you must retain this notice and the following

 text and disclaimers in all such redistributions of the Apple Software.

 Neither the name, trademarks, service marks or logos of Apple Inc. may

 be used to endorse or promote products derived from the Apple Software

 without specific prior written permission from Apple.  Except as

 expressly stated in this notice, no other rights or licenses, express or

 implied, are granted by Apple herein, including but not limited to any

 patent rights that may be infringed by your derivative works or by other

 works in which the Apple Software may be incorporated.

 The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

 THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS

 FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND

 OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.

 IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL

 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,

 MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED

 AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),

 STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE

 POSSIBILITY OF SUCH DAMAGE.

 Copyright (C) 2009 Apple Inc. All Rights Reserved.

 */

#import "BonjourBrowser.h"

#import "BrowserViewController.h"

#import "DomainViewController.h"

@interface BonjourBrowser ()

@property(nonatomic, retain, readwrite) BrowserViewController* bvc;

@property(nonatomic, retain, readwrite) DomainViewController* dvc;

@property(nonatomic, retain, readwrite) NSString* type;

@property(nonatomic, retain, readwrite) NSString* domain;

@property(nonatomic, assign, readwrite) BOOL showDisclosureIndicators;

@property(nonatomic, assign, readwrite) BOOL showCancelButton;

- (void) setupBrowser;

@end

@implementation BonjourBrowser

@synthesize bvc = _bvc;

@synthesize dvc = _dvc;

@synthesize type = _type;

@synthesize domain = _domain;

@synthesize showDisclosureIndicators = _showDisclosureIndicators;

@synthesize showCancelButton = _showCancelButton;

- (id) initForType:(NSString*)type inDomain:(NSString*)domain

	   customDomains:(NSMutableArray*)customDomains

	   showDisclosureIndicators:(BOOL)showDisclosureIndicators

	   showCancelButton:(BOOL)showCancelButton {

    // Create some strings that will be used in the DomainViewController.

	NSString *domainsTitle = NSLocalizedString(@"Domains", @"Domains title");

	NSString *domainLabel = NSLocalizedString(@"Added Domains", @"Added Domains label");

	NSString *addDomainTitle = NSLocalizedString(@"Add Domain", @"Add Domain title");

	NSString *searchingForServicesString = NSLocalizedString(@"Searching for services", @"Searching for services string");

    // Initialize the DomainViewController, which uses a NSNetServiceBrowser to look for Bonjour domains.

	DomainViewController* dvc = [[DomainViewController alloc] initWithTitle:domainsTitle showDisclosureIndicators:YES customsTitle:domainLabel customs:customDomains addDomainTitle:addDomainTitle showCancelButton:showCancelButton];

	if (dvc && (self = [super initWithRootViewController:dvc])) {

		self.type = type;

		self.showDisclosureIndicators = showDisclosureIndicators;

		self.showCancelButton = showCancelButton;

		self.searchingForServicesString	= searchingForServicesString;

		self.dvc = dvc;

		[self.dvc setDelegate:self];

		[self.dvc searchForBrowsableDomains]; // Tells the DomainViewController's NSNetServiceBrowser to start a search for domains that are browsable via Bonjour and the computer's network configuration.

		if ([domain length]) {

			self.domain = domain;

			[self setupBrowser]; // Initiate a search for Bonjour services of the type self.type.

			[self pushViewController:self.bvc animated:NO];

		}

	}

	return self;

}

- (NSString*) searchingForServicesString {

	return _searchingForServicesString;

}

// This property holds a string that displays the status of the service search to the user.

- (void) setSearchingForServicesString:(NSString*)searchingForServicesString {

	if (_searchingForServicesString != searchingForServicesString) {

		_searchingForServicesString = [searchingForServicesString copy];

		if (self.bvc) {

			self.bvc.searchingForServicesString = _searchingForServicesString;

		}

	}

}

- (void) setDelegate:(id<BonjourBrowserDelegate>)delegate {

	__delegate = delegate;

	super.delegate = delegate;

}

- (id<BonjourBrowserDelegate>) delegate {

	assert(__delegate == super.delegate);

	return __delegate;

}

- (BOOL) showTitleInNavigationBar {

	return _showTitleInNavigationBar;

}

- (void) setShowTitleInNavigationBar:(BOOL)show {

	_showTitleInNavigationBar = show;

	if (show) {

		self.bvc.navigationItem.prompt = self.title;

		self.dvc.navigationItem.prompt = self.title;

	} else {

		self.bvc.navigationItem.prompt = nil;

		self.dvc.navigationItem.prompt = nil;

	}

}

- (void) browserViewController:(BrowserViewController*)bvc didResolveInstance:(NSNetService*)service {

	assert(bvc == self.bvc);

	[self.delegate bonjourBrowser:self didResolveInstance:service];

}

// Create a BrowserViewController, which manages a NSNetServiceBrowser configured to look for Bonjour services.

- (void) setupBrowser {

	BrowserViewController* aBvc = [[BrowserViewController alloc] initWithTitle:self.domain showDisclosureIndicators:self.showDisclosureIndicators showCancelButton:self.showCancelButton];

    aBvc.searchingForServicesString = self.searchingForServicesString;

	aBvc.delegate = self;

    // Calls -[NSNetServiceBrowser searchForServicesOfType:inDomain:].

	[aBvc searchForServicesOfType:self.type inDomain:self.domain];

    // Store the BrowerViewController in an instance variable.

	self.bvc = aBvc;

	if (self.showTitleInNavigationBar)

		self.bvc.navigationItem.prompt = self.title;

}

// This method will be invoked when the user selects one of the domains from the list.

// The domain parameter will be the selected domain or nil if the user taps the 'Cancel' button (if shown).

- (void) domainViewController:(DomainViewController*)dvc didSelectDomain:(NSString*)domain {

	if (!domain) {

		// Cancel

		[self.delegate bonjourBrowser:self didResolveInstance:nil];

		return;

	}

	self.domain = domain;

	[self setupBrowser];

	[self pushViewController:self.bvc animated:YES];

}

- (void) dealloc

{

}

@end