ZIKRouter

An interface-oriented router for managing modules and injecting dependencies with protocol.

The view router can perform all navigation types in UIKit / AppKit through one method.

The service router can discover and prepare corresponding module with its protocol.

一个用于模块间解耦和通信，基于接口进行模块管理和依赖注入的组件化路由工具。用多种方式最大程度地发挥编译检查的功能。

通过 protocol 寻找对应的模块，并用 protocol 进行依赖注入和模块通信。

Service Router 可以管理任意自定义模块。View Router 进一步封装了界面跳转。

中文文档

Features

• [x] Swift and Objective-C support
• [x] iOS, macOS and tvOS support
• [x] File template for quickly creating router
• [x] Routing for UIViewController / NSViewController, UIView / NSView and any class
• [x] Dependency injection, including dynamic injection and static injection
• [x] Declaration of routable protocol for compile-time checking. Using undeclared protocol will bring compiler error. This is one of the most powerful feature
• [x] Module matching with its protocol
• [x] URL routing support
• [x] Configure the module with its protocol rather than a parameter dictionary
• [x] Required protocol and provided protocol for making thorough decouple
• [x] Adapter for decoupling modules and add compatible interfaces
• [x] Storyboard support. Views from a segue can be auto prepared
• [x] Encapsulation for all transition methods and unwind methods in UIKit / AppKit, and also custom transition
• [x] Error checking for view transition
• [x] AOP for view transition
• [x] Memory leak detection
• [x] Custom events handling
• [x] Auto registration
• [x] Highly scalable

Quick Start Guide

1. Create Router
   1. Router Subclass
   2. Simple Router
2. Declare Routable Type
3. View Router
   1. Transition directly
   2. Prepare before Transition
   3. Make Destination
   4. Required Parameter and Special Parameter
   5. Perform on Destination
   6. Prepare on Destination
   7. Remove
   8. Adapter
   9. Modularization
   10. URL Router
   11. Other Features
4. Service Router
5. Demo and Practice
6. File Template

Documentation

Design Idea

Design Idea

Basics

1. Router Implementation
2. Module Registration
3. Routable Declaration
4. Type Checking
5. Perform Route
6. Remove Route
7. Transfer Parameters with Custom Configuration

Advanced Features

1. Error Handle
2. Storyboard and Auto Create
3. AOP
4. Dependency Injection
5. Circular Dependency
6. Module Adapter
7. Unit Test

FAQ

Requirements

• iOS 7.0+
• Swift 3.2+
• Xcode 9.0+

Installation

Cocoapods

Add this to your Podfile.

For Objective-C project:

pod 'ZIKRouter', '>= 1.1.1'

or only use ServiceRouter
pod 'ZIKRouter/ServiceRouter' , '>=1.1.1'

For Swift project:

pod 'ZRouter', '>= 1.1.1'

or only use ServiceRouter
pod 'ZRouter/ServiceRouter' , '>=1.1.1'

Carthage

Add this to your Cartfile:

github "Zuikyo/ZIKRouter" >= 1.1.1

Build frameworks:

carthage update

Build DEBUG version to enable route checking:

carthage update --configuration Debug

Remember to use release version in production environment.

For Objective-C project, use

ZIKRouter.framework

ZRouter.framework

Getting Started

This is the demo view controller and protocol：

///Editor view's interface
protocol EditorViewInput: class {
    weak var delegate: EditorDelegate? { get set }
    func constructForCreatingNewNote()
}

///Editor view controller
class NoteEditorViewController: UIViewController, EditorViewInput {
    ...
}

///editor view's interface
@protocol EditorViewInput <zikviewroutable>
@property (nonatomic, weak) id<editordelegate> delegate;
- (void)constructForCreatingNewNote;
@end

///Editor view controller
@interface NoteEditorViewController: UIViewController <editorviewinput>
@end
@implementation NoteEditorViewController
@end

There're 2 steps to create route for your module.

1. Create Router

To make your class become modular, you need to create router for your module. You don't need to modify the module's code. That will reduce the cost for refactoring existing modules.

1.1 Router Subclass

Create router subclass for your module:

import ZIKRouter.Internal
import ZRouter

class NoteEditorViewRouter: ZIKViewRouter {
    override class func registerRoutableDestination() {
        // Register class with this router. A router can register multi views, and a view can be registered with multi routers
        registerView(NoteEditorViewController.self)
        // Register protocol. Then we can fetch this router with the protocol
        register(RoutableView())
    }
// Return the destination module
override func destination(with configuration: ViewRouteConfig) -> NoteEditorViewController? {
    // In configuration, you can get parameters from the caller for creating the instance
    let destination: NoteEditorViewController? = ... /// instantiate your view controller
    return destination
}

override func prepareDestination(_ destination: NoteEditorViewController, configuration: ViewRouteConfig) {
    // Inject dependencies to destination
}
}

//NoteEditorViewRouter.h
@import ZIKRouter;

@interface NoteEditorViewRouter : ZIKViewRouter
@end

//NoteEditorViewRouter.m
@import ZIKRouter.Internal;

@implementation NoteEditorViewRouter

+ (void)registerRoutableDestination {
    // Register class with this router. A router can register multi views, and a view can be registered with multi routers
    [self registerView:[NoteEditorViewController class]];
    // Register protocol. Then we can fetch this router with the protocol
    [self registerViewProtocol:ZIKRoutable(EditorViewInput)];
}

// Return the destination module
- (NoteEditorViewController *)destinationWithConfiguration:(ZIKViewRouteConfiguration *)configuration {
    // In configuration, you can get parameters from the caller for creating the instance 
    NoteEditorViewController *destination = ... // instantiate your view controller
    return destination;
}

- (void)prepareDestination:(NoteEditorViewController *)destination configuration:(ZIKViewRouteConfiguration *)configuration {
    // Inject dependencies to destination
}

@end

Each router can control their own routing, such as using different custom transition. And the router can be very easy to add additional features.

Read the documentation for more details and more methods to override.

1.2 Simple Router

If your module is very simple and don't need a router subclass, you can just register the class in a simpler way:

ZIKAnyViewRouter.register(RoutableView(), forMakingView: NoteEditorViewController.self)

[ZIKViewRouter registerViewProtocol:ZIKRoutable(EditorViewInput) forMakingView:[NoteEditorViewController class]];

or with custom creating block:

ZIKAnyViewRouter.register(RoutableView(), 
                 forMakingView: NoteEditorViewController.self) { (config, router) -> EditorViewInput? in
                     let destination: NoteEditorViewController? = ... // instantiate your view controller
                     return destination;
        }

[ZIKViewRouter
    registerViewProtocol:ZIKRoutable(EditorViewInput)
    forMakingView:[NoteEditorViewController class]
    making:^id _Nullable(ZIKViewRouteConfiguration *config, ZIKViewRouter *router) {
        NoteEditorViewController *destination = ... // instantiate your view controller
        return destination;
 }];

or with custom factory function:

function makeEditorViewController(config: ViewRouteConfig) -> EditorViewInput? {
    let destination: NoteEditorViewController? = ... // instantiate your view controller
    return destination;
}

ZIKAnyViewRouter.register(RoutableView(), 
                 forMakingView: NoteEditorViewController.self, making: makeEditorViewController)

id<editorviewinput> makeEditorViewController(ZIKViewRouteConfiguration *config) {
    NoteEditorViewController *destination = ... // instantiate your view controller
    return destination;
}

[ZIKViewRouter
    registerViewProtocol:ZIKRoutable(EditorViewInput)
    forMakingView:[NoteEditorViewController class]
    factory:makeEditorViewController];

2. Declare Routable Type

The declaration is for checking routes at compile time, and supporting storyboard.

// Declare NoteEditorViewController is routable
// This means there is a router for NoteEditorViewController
extension NoteEditorViewController: ZIKRoutableView {
}

// Declare EditorViewInput is routable
// This means you can use EditorViewInput to fetch router
extension RoutableView where Protocol == EditorViewInput {
    init() { self.init(declaredProtocol: Protocol.self) }
}

// Declare NoteEditorViewController is routable
// This means there is a router for NoteEditorViewController
DeclareRoutableView(NoteEditorViewController, NoteEditorViewRouter)

// If the protocol inherits from ZIKViewRoutable, it's routable
// This means you can use EditorViewInput to fetch router
@protocol EditorViewInput <zikviewroutable>
@property (nonatomic, weak) id<editordelegate> delegate;
- (void)constructForCreatingNewNote;
@end

If you use an undeclared protocol for routing, there will be compile time error. So it's much safer and easier to manage protocols and to know which protocols are routable.

Unroutable error in Swift:

Unroutable error in Objective-C:

Now you can get and show

NoteEditorViewController

View Router

Transition directly

Transition to editor view directly:

class TestViewController: UIViewController {

// Transition to editor view directly
func showEditorDirectly() {
    Router.perform(to: RoutableView<editorviewinput>(), path: .push(from: self))
}
}

@implementation TestViewController

- (void)showEditorDirectly {
    // Transition to editor view directly
    [ZIKRouterToView(EditorViewInput) performPath:ZIKViewRoutePath.pushFrom(self)];
}

@end

You can change transition type with

ViewRoutePath

enum ViewRoutePath {
    case push(from: UIViewController)
    case presentModally(from: UIViewController)
    case presentAsPopover(from: UIViewController, configure: ZIKViewRoutePopoverConfigure)
    case performSegue(from: UIViewController, identifier: String, sender: Any?)
    case show(from: UIViewController)
    case showDetail(from: UIViewController)
    case addAsChildViewController(from: UIViewController, addingChildViewHandler: (UIViewController, @escaping () -> Void) -> Void)
    case addAsSubview(from: UIView)
    case custom(from: ZIKViewRouteSource?)
    case makeDestination
    case extensible(path: ZIKViewRoutePath)
}

Encapsulating view transition can hide the UIKit detail, then you can perform route outside the view layer (presenter, view model, interactor, service) and be cross-platform.

Prepare before Transition

Prepare it before transition to editor view:

class TestViewController: UIViewController {

// Transition to editor view, and prepare the destination with EditorViewInput
func showEditor() {
    Router.perform(
        to: RoutableView<editorviewinput>(),
        path: .push(from: self),
        configuring: { (config, _) in
            // Route config
            // Prepare the destination before transition
            config.prepareDestination = { [weak self] destination in
                //destination is inferred as EditorViewInput
                destination.delegate = self
                destination.constructForCreatingNewNote()
            }
            config.successHandler = { destination in
                // Transition succeed
            }
            config.errorHandler = { (action, error) in
                // Transition failed
            }                
    })
}
}

@implementation TestViewController

- (void)showEditor {
    // Transition to editor view, and prepare the destination with EditorViewInput
    [ZIKRouterToView(EditorViewInput)
         performPath:ZIKViewRoutePath.pushFrom(self)
         configuring:^(ZIKViewRouteConfig *config) {
             // Route config
             // Prepare the destination before transition
             config.prepareDestination = ^(id<editorviewinput> destination) {
                 destination.delegate = self;
                 [destination constructForCreatingNewNote];
             };
             config.successHandler = ^(id<editorviewinput> destination) {
                 // Transition is completed
             };
             config.errorHandler = ^(ZIKRouteAction routeAction, NSError * error) {
                 // Transition failed
             };
         }];
}

@end

For more detail, read Perform Route.

Make Destination

If you don't want to show a view, but only need to get instance of the module, you can use

makeDestination

// destination is inferred as EditorViewInput
let destination = Router.makeDestination(to: RoutableView())

id<editorviewinput> destination = [ZIKRouterToView(EditorViewInput) makeDestination];

Required Parameter and Special Parameter

Some parameters can't be delivered though destination's protocol:

• the destination class uses custom initializers to create instance, router needs to get required parameter from the caller

• the module contains multi components, and you need to pass parameters to those components. Those parameters do not belong to the destination, so they should not exist in destination's protocol

You can use module config protocol and a custom configuration to transfer parameters.

Instead of

EditorViewInput

EditorViewModuleInput

// In general, a module config protocol only contains `makeDestinationWith`, for declaring parameters and destination type. You can also add other properties or methods
protocol EditorViewModuleInput: class {
    // Factory method for transferring parameters and making destination
    var makeDestinationWith: (_ note: Note) -> EditorViewInput? { get }
}

// In general, a module config protocol only contains `makeDestinationWith`, for declaring parameters and destination type. You can also add other properties or methods
@protocol EditorViewModuleInput <zikviewmoduleroutable>
 // Factory method for transferring parameters and making destination
@property (nonatomic, copy, readonly) id<editorviewinput> _Nullable(^makeDestinationWith)(Note *note);
@end

This configuration works like a factory for the destination with

EditorViewModuleInput

Now the user can use the module with its module config protocol and transfer parameters:

var note = ...
Router.makeDestination(to: RoutableViewModule()) { (config) in
     // Transfer parameters and get EditorViewInput
     let destination = config.makeDestinationWith(note)
}

Note *note = ...
[ZIKRouterToViewModule(EditorViewModuleInput)
    performPath:ZIKViewRoutePath.showFrom(self)
    configuring:^(ZIKViewRouteConfiguration<editorviewmoduleinput> *config) {
        // Transfer parameters and get EditorViewInput
        id<editorviewinput> destination = config.makeDestinationWith(note);
 }];

For more detail, read Transfer Parameters with Custom Configuration.

Perform on Destination

If you get a destination from other place, you can perform on the destination with its router.

For example, an UIViewController supports 3D touch, and implments

UIViewControllerPreviewingDelegate

class SourceViewController: UIViewController, UIViewControllerPreviewingDelegate {
    func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
        // Return the destination UIViewController to let system preview it
        let destination = Router.makeDestination(to: RoutableView())
        return destination
    }

func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController) {
    guard let destination = viewControllerToCommit as? EditorViewInput else {
        return
    }
    // Show the destination
    Router.to(RoutableView<editorviewinput>())?.perform(onDestination: destination, path: .presentModally(from: self))
}

@implementation SourceViewController

- (nullable UIViewController *)previewingContext:(id <uiviewcontrollerpreviewing>)previewingContext viewControllerForLocation:(CGPoint)location {
    //Return the destination UIViewController to let system preview it
    UIViewController<editorviewinput> *destination = [ZIKRouterToView(EditorViewInput) makeDestination];
    return destination;
}

- (void)previewingContext:(id <uiviewcontrollerpreviewing>)previewingContext commitViewController:(UIViewController *)viewControllerToCommit {
    // Show the destination
    UIViewController<editorviewinput> *destination;
    if ([viewControllerToCommit conformsToProtocol:@protocol(EditorViewInput)]) {
        destination = viewControllerToCommit;
    } else {
        return;
    }
    [ZIKRouterToView(EditorViewInput) performOnDestination:destination path:ZIKViewRoutePath.presentModallyFrom(self)];
}

@end

Prepare on Destination

If you don't want to show the destination, but just want to prepare an existing destination, you can prepare the destination with its router.

If the router injects dependencies inside it, this can properly setting the destination instance.

var destination: DestinationViewInput = ...
Router.to(RoutableView())?.prepare(destination: destination, configuring: { (config, _) in
            config.prepareDestination = { destination in
                // Prepare
            }
        })

UIViewController<editorviewinput> *destination = ...
[ZIKRouterToView(EditorViewInput) prepareDestination:destination configuring:^(ZIKViewRouteConfiguration *config) {
            config.prepareDestination = ^(id<editorviewinput> destination) {
                // Prepare
            };
        }];

Remove

You can remove the view by

removeRoute

class TestViewController: UIViewController {
    var router: DestinationViewRouter?

func showEditor() {
    // Hold the router
    router = Router.perform(to: RoutableView<editorviewinput>(), path: .push(from: self))
}

// Router will pop the editor view controller
func removeEditorDirectly() {
    guard let router = router, router.canRemove else {
        return
    }
    router.removeRoute()
    router = nil
}

func removeEditorWithResult() {
    guard let router = router, router.canRemove else {
        return
    }
    router.removeRoute(successHandler: {
        print("remove success")
    }, errorHandler: { (action, error) in
        print("remove failed, error: \(error)")
    })
    router = nil
}

func removeEditorAndPrepare() {
    guard let router = router, router.canRemove else {
        return
    }
    router.removeRoute(configuring: { (config) in
        config.animated = true
        config.prepareDestination = { destination in
            // Use destination before remove it
        }
    })
    router = nil
}
}

@interface TestViewController()
@property (nonatomic, strong) ZIKDestinationViewRouter(id<editorviewinput>) *router;
@end
@implementation TestViewController

- (void)showEditorDirectly {
    // Hold the router
    self.router = [ZIKRouterToView(EditorViewInput) performPath:ZIKViewRoutePath.pushFrom(self)];
}

// Router will pop the editor view controller
- (void)removeEditorDirectly {
    if (![self.router canRemove]) {
        return;
    }
    [self.router removeRoute];
    self.router = nil;
}

- (void)removeEditorWithResult {
    if (![self.router canRemove]) {
        return;
    }
    [self.router removeRouteWithSuccessHandler:^{
        NSLog(@"pop success");
    } errorHandler:^(ZIKRouteAction routeAction, NSError *error) {
        NSLog(@"pop failed,error: %@",error);
    }];
    self.router = nil;
}

- (void)removeEditorAndPrepare {
    if (![self.router canRemove]) {
        return;
    }
    [self.router removeRouteWithConfiguring:^(ZIKViewRemoveConfiguration *config) {
        config.animated = YES;
        config.prepareDestination = ^(UIViewController<editorviewinput> *destination) {
            // Use destination before remove it
        };
    }];
    self.router = nil;
}

@end

For more detail, read Remove Route.

Adapter

You can use another protocol to get router, as long as the protocol provides the same interface of the real protocol. Even the protocol is little different from the real protocol, you can adapt two protocols with category, extension and proxy.

Required protocol used by the user:

/// Required protocol to use editor module
protocol RequiredEditorViewInput: class {
    weak var delegate: EditorDelegate? { get set }
    func constructForCreatingNewNote()
}

/// Required protocol to use editor module
@protocol RequiredEditorViewInput <zikviewroutable>
@property (nonatomic, weak) id<editordelegate> delegate;
- (void)constructForCreatingNewNote;
@end

In the host app context, connect required protocol and provided protocol: ```swift /// In the host app, add required protocol to editor router class EditorViewAdapter: ZIKViewRouteAdapter { override class func registerRoutableDestination() { // If you can get the router, you can just register RequiredEditorViewInput to it NoteEditorViewRouter.register(RoutableView())

    // If you don't know the router, you can use adapter
    register(adapter: RoutableView(), forAdaptee: RoutableView())
}

}

/// Make NoteEditorViewController conform to RequiredEditorViewInput extension NoteEditorViewController: RequiredEditorViewInput { } ```

/// In the host app, add required protocol to editor router

//EditorViewAdapter.h
@interface EditorViewAdapter : ZIKViewRouteAdapter
@end

//EditorViewAdapter.m
@implementation EditorViewAdapter

+ (void)registerRoutableDestination {
    // If you can get the router, you can just register RequiredEditorViewInput to it
    [NoteEditorViewRouter registerViewProtocol:ZIKRoutable(RequiredEditorViewInput)];
    // If you don't know the router, you can use adapter
    [self registerDestinationAdapter:ZIKRoutable(RequiredEditorViewInput) forAdaptee:ZIKRoutable(EditorViewInput)];
}

@end

/// Make NoteEditorViewController conform to RequiredEditorViewInput
@interface NoteEditorViewController (Adapter) <requirededitorviewinput>
@end
@implementation NoteEditorViewController (Adapter)
@end

After adapting,

RequiredEditorViewInput

EditorViewInput

Use

RequiredEditorViewInput

class TestViewController: UIViewController {

func showEditorDirectly() {
    Router.perform(to: RoutableView<requirededitorviewinput>(), path: .push(from: self))
}
}

@implementation TestViewController

- (void)showEditorDirectly {
    [ZIKRouterToView(RequiredEditorViewInput) performPath:ZIKViewRoutePath.pushFrom(self)];
}

@end

Use

required protocol

provided protocol

Modularization

Separating

required protocol

provided protocol

required protocol

required protocol

Read the

ZIKLoginModule

ZIKRouterDemo

ZIKRouterDemo-macOS

For more detail, read Module Adapter.

URL Router

ZIKRouter also provides a default URLRouter. It's easy to communicate with modules via url.

URLRouter is not contained by default. If you want to use it, add submodule

pod 'ZIKRouter/URLRouter'

Podfile

[ZIKRouter enableDefaultURLRouteRule]

You can register router with a url:

class NoteEditorViewRouter: ZIKViewRouter {
    override class func registerRoutableDestination() {
        registerView(NoteEditorViewController.self)
        register(RoutableView())
        // Register url
        registerURLPattern("app://editor/:title")
    }
}

@implementation NoteEditorViewRouter

+ (void)registerRoutableDestination {
    [self registerView:[NoteEditorViewController class]];
    [self registerViewProtocol:ZIKRoutable(EditorViewInput)];
    // Register url
    [self registerURLPattern:@"app://editor/:title"];
}

@end

Then you can get the router with it's url:

ZIKAnyViewRouter.performURL("app://editor/test_note", path: .push(from: self))

[ZIKAnyViewRouter performURL:@"app://editor/test_note" path:ZIKViewRoutePath.pushFrom(self)];

And handle URL Scheme:

public func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
    let urlString = url.absoluteString
    if let _ = ZIKAnyViewRouter.performURL(urlString, fromSource: self.rootViewController) {
        return true
    } else if let _ = ZIKAnyServiceRouter.performURL(urlString) {
        return true
    } else {
        return false
    }
}

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<uiapplicationopenurloptionskey> *)options {
    if ([ZIKAnyViewRouter performURL:urlString fromSource:self.rootViewController]) {
        return YES;
    } else if ([ZIKAnyServiceRouter performURL:urlString]) {
        return YES;
    } else {
        return NO;
    }
}

If your project has different requirements for URL router, you can write your URL router by yourself. You can create custom ZIKRouter as parent class, add more powerful features in it. See

ZIKRouter+URLRouter.h

Other Features

There're other features, you can get details in the documentation:

• Custom Transition in each router, such as switching view controller in tab bar
• Storyboard
• AOP callback in view transition
• Handle Custom Event

Service Router

Instead of view, you can also get any service modules:

/// time service's interface
protocol TimeServiceInput {
    func currentTimeString() -> String
}

class TestViewController: UIViewController {
    @IBOutlet weak var timeLabel: UILabel!

func callTimeService() {
    // Get the service for TimeServiceInput
    let timeService = Router.makeDestination(
        to: RoutableService<timeserviceinput>(),
        preparation: { destination in
        // prepare the service if needed
    })
    //Use the service
    timeLabel.text = timeService.currentTimeString()
}
}

/// time service's interface
@protocol TimeServiceInput <zikserviceroutable>
- (NSString *)currentTimeString;
@end

@interface TestViewController ()
@property (weak, nonatomic) IBOutlet UILabel *timeLabel;
@end

@implementation TestViewController

- (void)callTimeService {
   // Get the service for TimeServiceInput
   id<timeserviceinput> timeService = [ZIKRouterToService(TimeServiceInput) makeDestination];
   self.timeLabel.text = [timeService currentTimeString];    
}

Demo and Practice

ZIKRouter is designed for VIPER architecture at first. But you can also use it in MVC or anywhere.

The demo (ZIKRouterDemo) in this repository shows how to use ZIKRouter to perform each route type. Open

Router.xcworkspace

If you want to see how it works in a VIPER architecture app, go to ZIKViper.

File Template

You can use Xcode file template to create router and protocol code quickly:

The template

ZIKRouter.xctemplate

Copy

ZIKRouter.xctemplate

~/Library/Developer/Xcode/Templates/ZIKRouter.xctemplate

Xcode -> File -> New -> File -> Templates

License

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