146 lines
5.2 KiB
Swift
146 lines
5.2 KiB
Swift
//
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// TextArea.swift
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// VDS
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//
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// Created by Matt Bruce on 1/10/23.
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//
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import Foundation
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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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/// A text area is an input wherein a customer enters long-form information.
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/// Use a text area when you want customers to enter text that’s longer than a single line.
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@objc(VDSTextArea)
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open class TextArea: EntryFieldBase {
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//--------------------------------------------------
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// MARK: - Initializers
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//--------------------------------------------------
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required public init() {
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super.init(frame: .zero)
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}
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public override init(frame: CGRect) {
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super.init(frame: .zero)
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}
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public required init?(coder: NSCoder) {
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super.init(coder: coder)
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}
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//--------------------------------------------------
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// MARK: - Private Properties
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//--------------------------------------------------
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internal var inputFieldStackView: UIStackView = {
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return UIStackView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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$0.axis = .horizontal
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$0.distribution = .fill
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$0.spacing = 12
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}
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}()
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//--------------------------------------------------
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// MARK: - Public Properties
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//--------------------------------------------------
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override var containerSize: CGSize { CGSize(width: 45, height: 88) }
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private var textView = UITextView().with {
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$0.translatesAutoresizingMaskIntoConstraints = false
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$0.font = TextStyle.bodyLarge.font
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$0.sizeToFit()
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$0.isScrollEnabled = false
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}
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open var textViewTextColorConfiguration: AnyColorable = ViewColorConfiguration().with {
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$0.setSurfaceColors(VDSColor.interactiveDisabledOnlight, VDSColor.interactiveDisabledOndark, forDisabled: true)
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$0.setSurfaceColors(VDSColor.elementsPrimaryOnlight, VDSColor.elementsPrimaryOndark, forDisabled: false)
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}.eraseToAnyColorable() { didSet { setNeedsUpdate() }}
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internal var minWidthConstraint: NSLayoutConstraint?
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internal var textViewHeightConstraint: NSLayoutConstraint?
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//--------------------------------------------------
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// MARK: - Overrides
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//--------------------------------------------------
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/// Called once when a view is initialized and is used to Setup additional UI or other constants and configurations.
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open override func setup() {
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super.setup()
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minWidthConstraint = containerView.widthAnchor.constraint(greaterThanOrEqualToConstant: 0)
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minWidthConstraint?.isActive = true
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controlContainerView.addSubview(textView)
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textView.pinToSuperView()
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textViewHeightConstraint = textView.heightAnchor.constraint(greaterThanOrEqualToConstant: 64)
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textViewHeightConstraint?.isActive = true
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backgroundColorConfiguration.setSurfaceColors(VDSColor.feedbackSuccessBackgroundOnlight, VDSColor.feedbackSuccessBackgroundOndark, forState: .success)
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borderColorConfiguration.setSurfaceColors(VDSColor.feedbackSuccessOnlight, VDSColor.feedbackSuccessOndark, forState: .success)
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textView.delegate = self
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}
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/// Resets to default settings.
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open override func reset() {
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super.reset()
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textView.text = ""
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}
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open override func getContainer() -> UIView {
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inputFieldStackView.addArrangedSubview(containerView)
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return inputFieldStackView
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}
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/// Used to make changes to the View based off a change events or from local properties.
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open override func updateView() {
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super.updateView()
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textView.isEditable = isEnabled
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textView.textColor = textViewTextColorConfiguration.getColor(self)
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//set the width constraints
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if let width {
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widthConstraint?.constant = width
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widthConstraint?.isActive = true
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minWidthConstraint?.isActive = false
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} else {
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minWidthConstraint?.constant = containerSize.width
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widthConstraint?.isActive = false
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minWidthConstraint?.isActive = true
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}
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}
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}
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extension TextArea: UITextViewDelegate {
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//--------------------------------------------------
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// MARK: - UITextViewDelegate
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//--------------------------------------------------
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public func textViewDidChange(_ textView: UITextView) {
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//dynamic textView Height sizing based on Figma
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//if you want it to work "as-is" delete this code
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//since it will autogrow with the current settings
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if let textViewHeightConstraint, textView.isEditable {
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let height = textView.frame.size.height
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let constraintHeight = textViewHeightConstraint.constant
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if height > constraintHeight {
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if height > 64 && height < 152 {
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textViewHeightConstraint.constant = 152
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} else if height > 152 {
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textViewHeightConstraint.constant = 328
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} else {
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textViewHeightConstraint.constant = 64
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}
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}
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}
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//setting the value and firing control event
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value = textView.text
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sendActions(for: .valueChanged)
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}
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}
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