314 lines
9.9 KiB
Swift
314 lines
9.9 KiB
Swift
//
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// SelectorControl.swift
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// VDS
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//
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// Created by Matt Bruce on 8/8/22.
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//
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import Foundation
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import UIKit
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import VDSColorTokens
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import VDSFormControlsTokens
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import Combine
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open class SelectorBase<ModelType: SelectorModel>: Control<ModelType>, Changable {
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//--------------------------------------------------
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// MARK: - Private Properties
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//--------------------------------------------------
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private var mainStackView: UIStackView = {
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let stackView = UIStackView()
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stackView.translatesAutoresizingMaskIntoConstraints = false
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stackView.alignment = .top
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stackView.axis = .vertical
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return stackView
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}()
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private var selectorStackView: UIStackView = {
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let stackView = UIStackView()
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stackView.translatesAutoresizingMaskIntoConstraints = false
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stackView.alignment = .top
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stackView.axis = .horizontal
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return stackView
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}()
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private var selectorLabelStackView: UIStackView = {
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let stackView = UIStackView()
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stackView.translatesAutoresizingMaskIntoConstraints = false
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stackView.axis = .vertical
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return stackView
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}()
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private var primaryLabel: Label = {
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let label = Label()
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label.translatesAutoresizingMaskIntoConstraints = false
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return label
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}()
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private var secondaryLabel: Label = {
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let label = Label()
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label.translatesAutoresizingMaskIntoConstraints = false
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return label
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}()
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private var errorLabel: Label = {
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let label = Label()
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label.translatesAutoresizingMaskIntoConstraints = false
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return label
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}()
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//--------------------------------------------------
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// MARK: - Public Properties
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//--------------------------------------------------
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public var selectorView: UIView = {
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let view = UIView()
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view.translatesAutoresizingMaskIntoConstraints = false
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return view
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}()
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public var onChange: Blocks.ActionBlock?
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@Proxy(\.model.id)
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open var id: UUID
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//can't bind to @Proxy
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open override var isSelected: Bool {
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get { model.selected }
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set {
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if model.selected != newValue {
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model.selected = newValue
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}
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}
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}
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@Proxy(\.model.labelText)
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open var labelText: String?
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@Proxy(\.model.childText)
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open var childText: String?
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@Proxy(\.model.showError)
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open var showError: Bool
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@Proxy(\.model.errorText)
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open var errorText: String?
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@Proxy(\.model.inputId)
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open var inputId: String?
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@Proxy(\.model.value)
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open var value: AnyHashable?
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@Proxy(\.model.dataAnalyticsTrack)
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open var dataAnalyticsTrack: String?
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@Proxy(\.model.dataClickStream)
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open var dataClickStream: String?
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@Proxy(\.model.dataTrack)
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open var dataTrack: String?
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@Proxy(\.model.accessibilityHintEnabled)
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open var accessibilityHintEnabled: String?
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@Proxy(\.model.accessibilityHintDisabled)
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open var accessibilityHintDisabled: String?
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@Proxy(\.model.accessibilityValueEnabled)
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open var accessibilityValueEnabled: String?
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@Proxy(\.model.accessibilityValueDisabled)
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open var accessibilityValueDisabled: String?
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@Proxy(\.model.accessibilityLabelEnabled)
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open var accessibilityLabelEnabled: String?
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@Proxy(\.model.accessibilityLabelDisabled)
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open var accessibilityLabelDisabled: String?
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//--------------------------------------------------
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// MARK: - Computed Properties
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//--------------------------------------------------
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open override var isEnabled: Bool {
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get { !model.disabled }
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set {
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//create local vars for clear coding
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let disabled = !newValue
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if model.disabled != disabled {
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model.disabled = disabled
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}
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}
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}
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//--------------------------------------------------
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// MARK: - Constraints
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//--------------------------------------------------
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private var knobLeadingConstraint: NSLayoutConstraint?
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private var knobTrailingConstraint: NSLayoutConstraint?
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private var knobHeightConstraint: NSLayoutConstraint?
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private var knobWidthConstraint: NSLayoutConstraint?
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private var selectorHeightConstraint: NSLayoutConstraint?
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private var selectorWidthConstraint: NSLayoutConstraint?
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//functions
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//--------------------------------------------------
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// MARK: - Lifecycle
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//--------------------------------------------------
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open override func setup() {
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super.setup()
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self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(Checkbox.toggleAndAction)))
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isAccessibilityElement = true
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accessibilityTraits = .button
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addSubview(mainStackView)
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mainStackView.addArrangedSubview(selectorStackView)
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mainStackView.addArrangedSubview(errorLabel)
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selectorStackView.addArrangedSubview(selectorView)
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selectorStackView.addArrangedSubview(selectorLabelStackView)
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selectorLabelStackView.addArrangedSubview(primaryLabel)
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selectorLabelStackView.addArrangedSubview(secondaryLabel)
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let selectorSize = getSelectorSize()
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selectorHeightConstraint = selectorView.heightAnchor.constraint(equalToConstant: selectorSize.height)
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selectorHeightConstraint?.isActive = true
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selectorWidthConstraint = selectorView.widthAnchor.constraint(equalToConstant: selectorSize.width)
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selectorWidthConstraint?.isActive = true
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updateSelector(model)
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mainStackView.topAnchor.constraint(equalTo: topAnchor).isActive = true
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mainStackView.leadingAnchor.constraint(equalTo: leadingAnchor).isActive = true
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mainStackView.trailingAnchor.constraint(equalTo: trailingAnchor).isActive = true
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mainStackView.bottomAnchor.constraint(equalTo: bottomAnchor).isActive = true
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}
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func updateLabels(_ viewModel: ModelType) {
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//deal with labels
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if model.shouldShowLabels {
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//add the stackview to hold the 2 labels
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//top label
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if let labelModel = viewModel.labelModel {
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primaryLabel.set(with: labelModel)
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primaryLabel.isHidden = false
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} else {
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primaryLabel.isHidden = true
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}
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//bottom label
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if let childModel = viewModel.childModel {
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secondaryLabel.set(with: childModel)
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secondaryLabel.isHidden = false
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} else {
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secondaryLabel.isHidden = true
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}
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selectorStackView.spacing = 12
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selectorLabelStackView.spacing = 4
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selectorLabelStackView.isHidden = false
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} else {
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selectorStackView.spacing = 0
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selectorLabelStackView.spacing = 0
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selectorLabelStackView.isHidden = true
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}
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//either add/remove the error from the main stack
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if let errorModel = model.errorModel, model.shouldShowError {
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errorLabel.set(with: errorModel)
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mainStackView.spacing = 8
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errorLabel.isHidden = false
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} else {
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mainStackView.spacing = 0
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errorLabel.isHidden = true
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}
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}
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public override func reset() {
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super.reset()
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updateSelector(model)
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setAccessibilityLabel()
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onChange = nil
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}
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//--------------------------------------------------
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// MARK: - Selector View
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//--------------------------------------------------
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open func getSelectorSize() -> CGSize {
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fatalError("must override")
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}
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open func updateSelector(_ viewModel: ModelType) {
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}
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//--------------------------------------------------
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// MARK: - Actions
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//--------------------------------------------------
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open override func sendAction(_ action: Selector, to target: Any?, for event: UIEvent?) {
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super.sendAction(action, to: target, for: event)
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toggleAndAction()
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}
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open override func sendActions(for controlEvents: UIControl.Event) {
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super.sendActions(for: controlEvents)
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toggleAndAction()
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}
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/// This will checkbox the state of the Checkbox and execute the actionBlock if provided.
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@objc public func toggleAndAction() {
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isSelected.toggle()
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onChange?()
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}
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override open func accessibilityActivate() -> Bool {
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// Hold state in case User wanted isAnimated to remain off.
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guard isUserInteractionEnabled else { return false }
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sendActions(for: .touchUpInside)
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return true
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}
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//--------------------------------------------------
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// MARK: - UIResponder
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//--------------------------------------------------
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open override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
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sendActions(for: .touchUpInside)
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}
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//--------------------------------------------------
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// MARK: - State
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//--------------------------------------------------
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/// Follow the SwiftUI View paradigm
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/// - Parameter viewModel: state
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open override func shouldUpdateView(viewModel: ModelType) -> Bool {
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fatalError("Must Override")
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}
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open override func updateView(viewModel: ModelType) {
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let enabled = !viewModel.disabled
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updateLabels(viewModel)
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updateSelector(viewModel)
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setAccessibilityHint(enabled)
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setAccessibilityValue(viewModel.selected)
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setAccessibilityLabel(viewModel.selected)
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isUserInteractionEnabled = !viewModel.disabled
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setNeedsLayout()
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layoutIfNeeded()
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}
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public func selectedPublisher() -> AnyPublisher<ModelType, Never> {
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self.publisher(for: \.isSelected)
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.map({ _ in
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return self.model
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})
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.eraseToAnyPublisher()
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}
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}
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