104 lines
3.4 KiB
Swift
104 lines
3.4 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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public var selectorViews: [HandlerType] = []
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/// The primary subscriber for onChange or the UIControl valueChanged event.
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public 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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//--------------------------------------------------
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// MARK: - Overrides
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//--------------------------------------------------
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/// Override to update the child SelectorViews disabled property for this group
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override public var disabled: Bool {
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didSet {
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selectorViews.forEach { handler in
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handler.disabled = disabled
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}
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}
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}
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/// Override to update the child SelectorViews surface property for this group
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override public 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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/// 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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public 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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/// Override to update the child SelectorViews reset method for this group
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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 updateAccessibilityLabel() {
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if !accessibilityTraits.contains(.selected) && isSelected {
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accessibilityTraits.insert(.selected)
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} else if accessibilityTraits.contains(.selected) && !isSelected{
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accessibilityTraits.remove(.selected)
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}
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if !accessibilityTraits.contains(.notEnabled) && !isEnabled {
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accessibilityTraits.insert(.notEnabled)
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} else if accessibilityTraits.contains(.notEnabled) && !isEnabled {
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accessibilityTraits.remove(.notEnabled)
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}
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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 updateAccessibilityLabel() {
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super.updateAccessibilityLabel()
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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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