ModuleServices

Requirements

Is valid for iOS 12 and higher. Requires Swift 5.5 and XCode 11.0 or higher.

Installation

Swift Package Manager

You can install CombinationGenerator via Swift Package Manager by adding the following line to your Package.swift:

import PackageDescription

let package = Package(
    [...]
    dependencies: [
        .Package(name: "ModuleServices", url: "https://github.com/cosmicfools/ModuleServices.git", .branch("master"))
    ]
)

Cocoapods

You can install CombinationGenerator via Cocoapods by adding the following line to your Podfile:

pod 'ModuleServices'

How to use it

ModuleServices basically is a pack of tools that is helping you to develop faster. This libabry is so useful for those UIViewControllers that are based in UITableView. The main concept in this libary is, a Module means a Section in a UITableView, so there is a subclass of UIViewController called ModulesViewController that manage all modules.

A Module is a like and mini UIViewController, should be able to work it self.

Basically a ModulesViewController has an array of TableSectionModules.

Sometimes an example is easier to understand than 1000 words.. so, we have an additionaly repository full of examples: Module-examples

1. Create a Module

You need to create a subclass of TableSectionModule

class FirstSectionModule: TableSectionModule {}

2. Override the needed methods in the Module

There are a lot of methods that could be override. The most usuals are:

• Registration of UITableViewCell/UITableViewHeaderFooterView with Class/Nib

override func registerClassForCells() -> [AnyClass]
override func registerClassForHeadersFooters() -> [AnyClass]
override func registerNibsForCells() -> [AnyClass] 
override func registerNibsForHeadersFooters() -> [AnyClass] 

• Creation of rows, this is the like the data source of the UITableView

override func createRows()

• Dequeue and configure of the UITableViewCell

override func tableView(_ tableView: UITableView, cellForRowAtIndexPath indexPath: IndexPath) -> UITableViewCell

• Rest of method that could be override You can override basically the same method that the UITableViewDelegate and UITableViewDataSource offer.

• Obviously you will need to create&configure all the UITableViewCells that the Module would contains.
  
  

Example of TableSectionModule with methods

import ModuleServices

class FirstSectionModule: TableSectionModule {
    override func registerNibsForCells() -> [AnyClass] {
        return super.registerNibsForCells() + [
            Example1TableViewCell.classForCoder(),
        ]
    }
    
    override func registerClassForCells() -> [AnyClass] {
        super.registerClassForCells() + [UITableViewCell.classForCoder()]
    }
    
    override func createRows() {
        super.createRows()
        
        rows.append(String(describing: Example1TableViewCell.self))
        rows.append(String(describing: UITableViewCell.self))
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAtIndexPath indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: className, for: indexPath)
        
        let className = rows[(indexPath as NSIndexPath).row] as! String
        //Addtional configuration for the cell
        switch className {
        case String(describing: UITableViewCell.self):
            cell.textLabel?.text = "A tottally native cell"
            break
        default:
            break
        }
        
        return cell
    }
    
    override func tableView(_ tableView: UITableView, heightForRowAtIndexPath indexPath: IndexPath) -> CGFloat {
        return 44.0
}

3. Create a ModulesViewController

You need to create a subclass of ModulesViewController

class MyViewController: ModulesViewController {}

4. Override the needed methods in the ViewController

The methods to be override in the ModulesViewController are less than on the Modules. Usually is just needed to override the createModules

override func createModules()

This method will add all the modules that the view controller could have. Like this example:

override func createModules() {
        super.createModules()
        
        appendModule(FirstSectionModule(tableView: tableView!))
    }

Example of ModulesViewController with methods

import ModuleServices

class MyViewController: ModulesViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        tableView?.rowHeight = UITableViewAutomaticDimension
        tableView?.estimatedRowHeight = 44
        
        tableView?.tableFooterView = UIView()
    }

    override func createModules() {
        super.createModules()
        
        appendModule(FirstSectionModule(tableView: tableView!))
    }

}

As could appreciate this is a very good approach to avoid masive view controllers. The main idea is to split responsabilities.

• A ModulesViewController will manage (add/remove) TableSectionModule
• A TableSectionModule will manage the cells that the section itself will contains
• A TableSectionModule could contain enough logic & responsability how to make it fully work that section of the UITableView

Enjoy and be module my developer!

Author

Francisco Javier Trujillo Mata, fjtrujy@gmail.com

License

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