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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
public class PrimaryRoundedButton: ResizableButton, ThemeApplicable {
private struct UX {
static let buttonCornerRadius: CGFloat = 12
static let buttonVerticalInset: CGFloat = 12
static let buttonHorizontalInset: CGFloat = 16
static let contentInsets = NSDirectionalEdgeInsets(
top: buttonVerticalInset,
leading: buttonHorizontalInset,
bottom: buttonVerticalInset,
trailing: buttonHorizontalInset
)
}
private var backgroundColorNormal: UIColor = .clear
private var backgroundColorHighlighted: UIColor = .clear
private var backgroundColorDisabled: UIColor = .clear
private var foregroundColor: UIColor = .black
private var foregroundColorDisabled: UIColor = .clear
override init(frame: CGRect) {
super.init(frame: frame)
configuration = UIButton.Configuration.filled()
titleLabel?.adjustsFontForContentSizeCategory = true
}
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 [.disabled]:
updatedConfiguration.background.backgroundColor = backgroundColorDisabled
case [.highlighted]:
updatedConfiguration.background.backgroundColor = backgroundColorHighlighted
default:
updatedConfiguration.background.backgroundColor = backgroundColorNormal
}
// swiftlint:disable line_length
updatedConfiguration.titleTextAttributesTransformer = UIConfigurationTextAttributesTransformer { [weak self] incoming in
// swiftlint:enable line_length
var container = incoming
if self?.state == .disabled {
container.foregroundColor = self?.foregroundColorDisabled
} else {
container.foregroundColor = self?.foregroundColor
}
container.font = FXFontStyles.Bold.callout.scaledFont()
return container
}
updatedConfiguration.imageColorTransformer = UIConfigurationColorTransformer { [weak self] color in
if self?.state == .disabled {
return self?.foregroundColorDisabled ?? .white
} else {
return self?.foregroundColor ?? .white
}
}
configuration = updatedConfiguration
}
public func configure(viewModel: PrimaryRoundedButtonViewModel) {
guard var updatedConfiguration = configuration else {
return
}
updatedConfiguration.contentInsets = UX.contentInsets
updatedConfiguration.title = viewModel.title
updatedConfiguration.titleAlignment = .center
// Using a nil backgroundColorTransformer will just make the background view
// use configuration.background.backgroundColor without any transformation
updatedConfiguration.background.backgroundColorTransformer = nil
updatedConfiguration.background.cornerRadius = UX.buttonCornerRadius
updatedConfiguration.cornerStyle = .fixed
accessibilityIdentifier = viewModel.a11yIdentifier
guard let imageTitlePadding = viewModel.imageTitlePadding else {
configuration = updatedConfiguration
return
}
updatedConfiguration.imagePadding = imageTitlePadding
configuration = updatedConfiguration
}
// MARK: ThemeApplicable
public func applyTheme(theme: Theme) {
backgroundColorNormal = theme.colors.actionPrimary
backgroundColorHighlighted = theme.colors.actionPrimaryHover
backgroundColorDisabled = theme.colors.actionPrimaryDisabled
foregroundColor = theme.colors.textInverted
foregroundColorDisabled = theme.colors.textInvertedDisabled
setNeedsUpdateConfiguration()
}
}