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Code Quality Rank: L5
Programming language: Swift
License: MIT License
Tags: Utility    
Latest version: v6.0.0

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README

⚠️ DEPRECATED, NO LONGER MAINTAINED

Compass logo

Version Carthage Compatible License Platform CI Status Swift

Compass helps you setup a central navigation system for your application. This has many benefits, one of them being that controllers can now be decoupled, meaning that the list that presents the detail no longer knows about what its presenting. Controllers become agnostic and views stay stupid. The user experience stays the same but the logic and separation of concerns become clearer. The outcome is that your application will become more modular by default. Anything could potentially be presented from anywhere, but remember, with great power comes great responsibility.

Getting Started

Below are tutorials on how to use Compass

Setup

Step 1

First you need to register a URL scheme for your application.

Step 2

Now you need to configure Compass to use that URL scheme, a good place to do this is in your AppDelegate. Then configure all the routes you wish you support.

func application(_ application: UIApplication,
                 didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
  Navigator.scheme = "compass"
  Navigator.routes = ["profile:{username}", "login:{username}", "logout"]
  return true
}

Step 3

Register your location request handler

Navigator.handle = { [weak self] location in
  let arguments = location.arguments

  let rootController = self?.window.rootViewController as? UINavigationController

  switch location.path {
    case "profile:{username}":
      let profileController = ProfileController(title: arguments["username"])
      rootController?.pushViewController(profileController, animated: true)
    case "login:{username}":
      let loginController = LoginController(title: arguments["username"])
      rootController?.pushViewController(loginController, animated: true)
    case "logout":
      self?.clearLoginSession()
      self?.switchToLoginScreen()
    default: 
      break
  }
}

Step 4

Anywhere in your application, you can just use Navigator to navigate

@IBOutlet func logoutButtonTouched() {
  Navigator.navigate(urn: "logout")
}

Step 5

Optional. If you want to support deep linking, set up your application to respond to the URLs. Setting it up this way would mean that you could open any view from a push notification depending on the contents of the payload.

func application(_ app: UIApplication,
                 open url: URL,
                 options: [UIApplicationOpenURLOptionsKey : Any]) -> Bool {
  do {
    try Navigator.navigate(url: url)
  } catch {
    // Handle error
  }

  return true
}

Compass life hacks

Tip 1. Router

We also have some conventional tools for you that could be used to organize your route handling code and avoid huge switch cases.

  • Implement Routable protocol to keep your single route navigation code in one place: ```swift struct ProfileRoute: Routable {

func navigate(to location: Location, from currentController: CurrentController) throws { guard let username = location.arguments["username"] else { return }

let profileController = ProfileController(title: username)
currentController.navigationController?.pushViewController(profileController, animated: true)

} }


- Create a `Router` instance and register your routes. Think of `Router` as a composite `Routable`
```swift
let router = Router()
router.routes = [
  "profile:{username}": ProfileRoute(),
  "logout": LogoutRoute()
]
  • Parse URL with Compass and navigate to the route with a help of your Router instance. ```swift func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any]) -> Bool {

return handle(url) }

func handle(_ url: URL) -> Bool { guard let location = Navigator.parse(url) else { return false }

router.navigate(to: location, from: navigationController)

return true }


### Tip 2. Multiple routers
You could set up multiple routers depending on app states. For example, you could have 2 routers for pre and post login.

```swift
let preLoginRouter = Router()
preLoginRouter.routes = [
  "profile:{username}" : ProfileRoute()
]

let postLoginRouter = Router()
postLoginRouter.routes = [
  "login:{username}" : LoginRoute()
]

let router = hasLoggedIn ? postLoginRouter : preLoginRouter
router.navigate(to: location, from: navigationController)

Installation

Compass is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'Compass'

Compass is also available through Carthage. To install just write into your Cartfile:

github "hyperoslo/Compass"

Author

Hyper Interaktiv AS, [email protected]

Credits

The idea behind Compass came from John Sundell's tech talk "Components & View Models in the Cloud - how Spotify builds native, dynamic UIs"

License

Compass is available under the MIT license. See the LICENSE file for more info.


*Note that all licence references and agreements mentioned in the Compass README section above are relevant to that project's source code only.