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mvvm's Introduction

關於

這是一個 MVVM 的展示專案

ViewModel 使用 POP & OOP 建立

方便使用,並且減少大量重複的 Code

--

架構

Model

Just Model


ViewModel

持有 Models

var models: [Model]

有自己的狀態

var status: ViewModelStatus

負責取得資料(Web Api / Locale DB)

func loadData()
func loadDataMode()

負責通知 ViewController Loading 狀態

var loadingDelegate: ViewModelLoadingDelegate?
var loadingStatusDelegate: ViewModelLoadingStatusDelegate?

提供 Method 讓 ViewController 取用 Model

var datasCount: Int
func model(at index: Int) -> Model?
func isLastData(index: Int) -> Bool
func isLoadMore(index: Int) -> Bool

提供 Method 讓 ViewController 呼叫做事

func refreshData()
func nextStatus()

ViewController

持有 ViewModel

var viewModel: BaseViewModel

conform ViewModel 的 Delegate

extension ViewController: ViewModelLoadingDelegate

func loadingDone()
func loadingFail(_ error: Error?)

extension ViewController: ViewModelLoadingStatusDelegate

func showEmptyView(with: Error?)
func removeEmptyView()
func showLoading(_ bool: Bool)

請 ViewModel 做事

viewModel.nextStatus()
viewModel.refreshData()

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