144 lines
6.1 KiB
Swift
144 lines
6.1 KiB
Swift
//
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// RadioButton.swift
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// VDS
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//
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// Created by Matt Bruce on 7/22/22.
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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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/**
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A custom implementation of Apple's UISwitch.
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By default this class begins in the off state.
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*/
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public class RadioButton: RadioButtonBase<DefaultRadioButtonModel>{}
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open class RadioButtonBase<ModelType: RadioButtonModel>: SelectorBase<ModelType> {
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//--------------------------------------------------
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// MARK: - Configuration Properties
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//--------------------------------------------------
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public let radioButtonSize = CGSize(width: 20, height: 20)
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public let radioButtonSelectedSize = CGSize(width: 10, height: 10)
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private var radioButtonBackgroundColorConfiguration: RadioButtonErrorColorConfiguration = {
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let config = RadioButtonErrorColorConfiguration()
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//error doesn't care enabled/disable
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config.error.forTrue.lightColor = VDSColor.elementsPrimaryOnlight
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config.error.forTrue.darkColor = VDSColor.elementsPrimaryOndark
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config.error.forFalse.lightColor = VDSColor.feedbackErrorBackgroundOnlight
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config.error.forFalse.darkColor = VDSColor.feedbackErrorBackgroundOndark
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return config
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}()
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private var radioButtonBorderColorConfiguration: RadioButtonErrorColorConfiguration = {
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let config = RadioButtonErrorColorConfiguration()
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config.forTrue.enabled.lightColor = VDSColor.elementsPrimaryOnlight
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config.forTrue.enabled.darkColor = VDSColor.elementsPrimaryOndark
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config.forFalse.enabled.lightColor = VDSFormControlsColor.borderOnlight
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config.forFalse.enabled.darkColor = VDSFormControlsColor.borderOndark
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config.forTrue.disabled.lightColor = VDSColor.interactiveDisabledOnlight
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config.forTrue.disabled.darkColor = VDSColor.interactiveDisabledOndark
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config.forFalse.disabled.lightColor = VDSColor.interactiveDisabledOnlight
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config.forFalse.disabled.darkColor = VDSColor.interactiveDisabledOndark
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//error doesn't care enabled/disable
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config.error.forTrue.lightColor = VDSColor.elementsPrimaryOnlight
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config.error.forTrue.darkColor = VDSColor.elementsPrimaryOndark
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config.error.forFalse.lightColor = VDSColor.feedbackErrorOnlight
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config.error.forFalse.darkColor = VDSColor.feedbackErrorOndark
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return config
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}()
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private var radioButtonCheckColorConfiguration: BinaryDisabledSurfaceColorConfiguration<ModelType> = {
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let config = BinaryDisabledSurfaceColorConfiguration<ModelType>()
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config.forTrue.enabled.lightColor = VDSColor.elementsPrimaryOnlight
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config.forTrue.enabled.darkColor = VDSColor.elementsPrimaryOndark
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config.forTrue.disabled.lightColor = VDSColor.interactiveDisabledOnlight
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config.forTrue.disabled.darkColor = VDSColor.interactiveDisabledOndark
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return config
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}()
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//--------------------------------------------------
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// MARK: - Initializers
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//--------------------------------------------------
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public convenience init() {
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self.init(with: ModelType())
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}
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required public init(with model: ModelType) {
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super.init(with: model)
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}
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required public init?(coder: NSCoder) {
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super.init(with: ModelType())
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}
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//--------------------------------------------------
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// MARK: - RadioButton View
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//--------------------------------------------------
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/// Manages the appearance of the radioButton.
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private var shapeLayer: CAShapeLayer?
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open override func getSelectorSize() -> CGSize {
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return radioButtonSize
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}
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open override func updateSelector(_ viewModel: ModelType) {
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//get the colors
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let backgroundColor = radioButtonBackgroundColorConfiguration.getColor(viewModel)
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let borderColor = radioButtonBorderColorConfiguration.getColor(viewModel)
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let radioSelectedColor = radioButtonCheckColorConfiguration.getColor(viewModel)
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if let shapeLayer = shapeLayer, let sublayers = layer.sublayers, sublayers.contains(shapeLayer) {
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shapeLayer.removeFromSuperlayer()
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self.shapeLayer = nil
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}
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selectorView.backgroundColor = backgroundColor
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selectorView.layer.borderColor = borderColor.cgColor
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selectorView.layer.cornerRadius = selectorView.bounds.width * 0.5
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selectorView.layer.borderWidth = 1.0
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if shapeLayer == nil {
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let bounds = selectorView.bounds
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let selectedBounds = radioButtonSelectedSize
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let length = max(bounds.size.height, bounds.size.width)
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guard length > 0.0, shapeLayer == nil else { return }
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let bezierPath = UIBezierPath(ovalIn: CGRect(x: (bounds.width - selectedBounds.width) / 2,
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y: (bounds.height - selectedBounds.height) / 2,
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width: radioButtonSelectedSize.width,
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height: radioButtonSelectedSize.height))
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let shapeLayer = CAShapeLayer()
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self.shapeLayer = shapeLayer
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shapeLayer.frame = bounds
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layer.addSublayer(shapeLayer)
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shapeLayer.fillColor = radioSelectedColor.cgColor
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shapeLayer.path = bezierPath.cgPath
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}
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}
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//--------------------------------------------------
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// MARK: - Color Class Configurations
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//--------------------------------------------------
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private class RadioButtonErrorColorConfiguration: BinaryDisabledSurfaceColorConfiguration<ModelType> {
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public let error = BinarySurfaceColorConfiguration<ModelType>()
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override func getColor(_ viewModel: ModelType) -> UIColor {
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//only show error is enabled and showError == true
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let showErrorColor = !viewModel.disabled && viewModel.showError
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if showErrorColor {
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return error.getColor(viewModel)
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} else {
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return super.getColor(viewModel)
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}
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}
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}
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}
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