Gummi Dispatcher

Description

Observe and dispatch any objects.

Features

• Dispatch any object (no NSNotification like in NSNotificationCenter)
• Add observers with priority
• Add observers that get removed after execution (add once)

How to use Gummi Dispatcher

Get a dispatcher

// Create your own dispatcher
GDDispatcher *dispatcher = [[GDDispatcher alloc] init];

// or use the shared dispatcher
GDDispatcher *dispatcher = [GDDispatcher sharedDispatcher];

Add observers

[dispatcher addObserver:self forObject:[Greeting class]
           withSelector:@selector(doSthLast:) priority:-5];

[dispatcher addObserver:self forObject:[Greeting class]
           withSelector:@selector(doSthFirst:) priority:10];

You can add observers that get removed after execution

[dispatcher addObserverOnce:self forObject:[Greeting class]
           withSelector:@selector(doSthLast:) priority:-5];

[dispatcher addObserverOnce:self forObject:[Greeting class]
           withSelector:@selector(doSthFirst:) priority:10];

Dispatch objects

[dispatcher dispatchObject:[[Greeting alloc] initWithString:@"Hello"]];

// Logs
// Got greeting first: Hello
// Got greeting last: Hello

- (void)doSthFirst:(Greeting *)greeting {
    NSLog(@"Got greeting first: %@", greeting.string);
}

- (void)doSthLast:(Greeting *)greeting {
    NSLog(@"Got greeting last: %@", greeting.string);
}

Install Gummi Dispatcher

You find the source files you need in Gummi-Dispatcher/Classes.

CocoaPods

Install [CocoaPods] (http://cocoapods.org) and add the Gummi Dispatcher reference to your Podfile

platform :ios, '5.0'
  pod 'Gummi-Dispatcher'
end

Add this remote

$ pod repo add sschmid-cocoapods-specs https://github.com/sschmid/cocoapods-specs

Install Gummi Dispatcher

$ cd path/to/project
$ pod install

Open the created Xcode Workspace file.

Projects that use Gummi Dispatcher

• [Gummi Commander] (https://github.com/sschmid/Gummi-Commander) Event Command Mapping System for Objective-C