92 lines
2.8 KiB
Swift
92 lines
2.8 KiB
Swift
//
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// SelectorGroupHandlerBase.swift
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// VDS
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//
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// Created by Matt Bruce on 9/8/22.
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//
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import Foundation
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import UIKit
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import Combine
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/// Base Class used for any Grouped Form Control of a Selector Type.
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open class SelectorGroupHandlerBase<HandlerType: Control>: Control, Changeable {
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//--------------------------------------------------
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// MARK: - Public Properties
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//--------------------------------------------------
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/// Array of the HandlerType registered.
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open var selectorViews: [HandlerType] = []
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/// The primary subscriber for onChange or the UIControl valueChanged event.
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open var onChangeSubscriber: AnyCancellable? {
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willSet {
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if let onChangeSubscriber {
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onChangeSubscriber.cancel()
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}
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}
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}
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/// Whether this object is enabled or not
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override open var isEnabled: Bool {
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didSet {
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selectorViews.forEach { $0.isEnabled = isEnabled }
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}
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}
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/// Current Surface and this is used to pass down to child objects that implement Surfacable.
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override open var surface: Surface {
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didSet {
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selectorViews.forEach { handler in
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handler.surface = surface
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}
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}
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}
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//--------------------------------------------------
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// MARK: - Overrides
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//--------------------------------------------------
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/// Handler for the Group to override on a select event.
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/// - Parameter selectedControl: Selected Control the user interacted.
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open func didSelect(_ selectedControl: HandlerType) {
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fatalError("Must override didSelect")
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}
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/// Helper method to execute the valueChanged event.
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open func valueChanged() {
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DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(100)) { [weak self] in
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self?.sendActions(for: .valueChanged)
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}
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}
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/// Resets to default settings as well as child views.
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open override func reset() {
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super.reset()
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selectorViews.forEach{ $0.reset() }
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}
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open override func updateAccessibility() {
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super.updateAccessibility()
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setAccessibilityLabel(for: selectorViews)
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}
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}
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open class SelectorGroupSelectedHandlerBase<HandlerType: Control>: SelectorGroupHandlerBase<HandlerType>{
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/// Current Selected Control for this group.
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public var selectedHandler: HandlerType? {
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return selectorViews.filter { $0.isSelected == true }.first
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}
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open override func updateAccessibility() {
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super.updateAccessibility()
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if let selectedHandler, let value = selectedHandler.accessibilityValue, let label = selectedHandler.accessibilityLabel {
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accessibilityValue = "\(label) \(value)"
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} else {
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accessibilityValue = nil
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}
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}
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}
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