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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
import Common
import UIKit
open class LinkButton: UIButton, ThemeApplicable {
private var foregroundColorNormal: UIColor = .clear
private var foregroundColorHighlighted: UIColor = .clear
private var backgroundColorNormal: UIColor = .clear
override init(frame: CGRect) {
super.init(frame: frame)
configuration = UIButton.Configuration.plain()
}
open func configure(viewModel: LinkButtonViewModel) {
guard let config = configuration else {
return
}
var updatedConfiguration = config
updatedConfiguration.title = viewModel.title
updatedConfiguration.titleTextAttributesTransformer = UIConfigurationTextAttributesTransformer { incoming in
var outgoing = incoming
outgoing.font = viewModel.font
outgoing.underlineStyle = .single
return outgoing
}
updatedConfiguration.contentInsets = viewModel.contentInsets
accessibilityIdentifier = viewModel.a11yIdentifier
contentHorizontalAlignment = viewModel.contentHorizontalAlignment
configuration = updatedConfiguration
layoutIfNeeded()
}
public required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override public func updateConfiguration() {
guard var updatedConfiguration = configuration else {
return
}
switch state {
case [.highlighted]:
updatedConfiguration.baseForegroundColor = foregroundColorHighlighted
default:
updatedConfiguration.baseForegroundColor = foregroundColorNormal
}
updatedConfiguration.background.backgroundColor = backgroundColorNormal
configuration = updatedConfiguration
}
// MARK: ThemeApplicable
public func applyTheme(theme: Theme) {
foregroundColorNormal = theme.colors.textAccent
foregroundColorHighlighted = theme.colors.actionPrimaryHover
backgroundColorNormal = .clear
setNeedsUpdateConfiguration()
}
}