121 lines
4.2 KiB
Swift
121 lines
4.2 KiB
Swift
//
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// SelectorGroupHandlerable.swift
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// VDS
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//
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// Created by Matt Bruce on 8/23/22.
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//
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import Foundation
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import UIKit
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///MARK: Groups that allow anything selected
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public protocol SelectorGroupModelHandlerable: ModelHandlerable, Disabling, Surfaceable where ModelType: SelectorGroupModelable {
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associatedtype ModelHandlerType: ModelHandlerable where ModelType.SelectorModelType == ModelHandlerType.ModelType, ModelHandlerType: UIControl
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var selectorViews: [ModelHandlerType] { get set }
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func createModelHandler(selector: ModelHandlerType.ModelType) -> ModelHandlerType
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}
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extension SelectorGroupModelHandlerable {
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public func findSelectorView(inputId: String?) -> ModelHandlerType? {
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return selectorViews.first(where: { existingSelectorView in
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return existingSelectorView.model.inputId == inputId
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})
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}
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public func createModelHandler(selector: ModelHandlerType.ModelType) -> ModelHandlerType {
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//create view
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let newSelectorView = ModelHandlerType(with: selector)
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//add model update to the subscribers
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newSelectorView.handlerPublisher()
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.sink { [weak self] model in
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if let cached = self?.getCachedSelector(viewModel: model), newSelectorView.shouldUpdateView(viewModel: cached) {
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self?.replace(viewModel: model)
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}
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}
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.store(in: &subscribers)
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return newSelectorView
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}
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public func updateSelectors(){
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let selectors = model.selectors.compactMap { existing in
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return existing.copyWith {
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$0.disabled = disabled
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$0.surface = surface
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}
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}
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model.selectors = selectors
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}
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public func getCachedSelector(viewModel: ModelHandlerType.ModelType) -> ModelHandlerType.ModelType? {
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if let index = model.selectors.firstIndex(where: { element in
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return element.inputId == viewModel.inputId
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}) {
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return model.selectors[index]
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} else {
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return nil
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}
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}
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public func replace(viewModel: ModelHandlerType.ModelType){
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if let index = model.selectors.firstIndex(where: { element in
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return element.inputId == viewModel.inputId
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}) {
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model.selectors[index] = viewModel
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}
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}
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}
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///MARK: Groups that allow single selections
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public protocol SelectorGroupSelectedModelHandlerable: SelectorGroupModelHandlerable {
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var selectedModel: ModelHandlerType.ModelType? { get set }
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func didSelect(selector: ModelHandlerType.ModelType)
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}
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extension SelectorGroupSelectedModelHandlerable {
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public func createModelHandler(selector: ModelHandlerType.ModelType) -> ModelHandlerType {
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//create view
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let newSelectorView = ModelHandlerType(with: selector)
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//add the selectedPublisher for the change
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newSelectorView.publisher(for: .valueChanged)
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.sink(receiveValue: { [weak self] control in
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guard self?.model.selectors.count ?? 0 > 0 else { return }
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self?.didSelect(selector: control.model)
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})
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.store(in: &subscribers)
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//add model update to the subscribers
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newSelectorView.handlerPublisher()
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.sink { [weak self] model in
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if let cached = self?.getCachedSelector(viewModel: model), newSelectorView.shouldUpdateView(viewModel: cached) {
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self?.replace(viewModel: model)
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}
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}
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.store(in: &subscribers)
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return newSelectorView
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}
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public func didSelect(selector: ModelHandlerType.ModelType) {
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if var oldSelectedModel = selectedModel {
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oldSelectedModel.selected = false
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replace(viewModel: oldSelectedModel)
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}
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//only select is selected
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if selector.selected {
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var newSelectedModel = selector
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newSelectedModel.selected = true
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replace(viewModel: newSelectedModel)
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selectedModel = newSelectedModel
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} else {
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//ensure current value is removed
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selectedModel = nil
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}
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}
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}
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