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+import UIKit
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+import DcCore
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+
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+class EmptyStateLabel: FlexLabel {
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+
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+ override var text: String? {
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+ set {
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+ guard let newValue = newValue else {
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+ super.label.attributedText = nil
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+ return
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+ }
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+
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+ guard let style = NSMutableParagraphStyle.default.mutableCopy() as? NSMutableParagraphStyle else {
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+ label.attributedText = NSAttributedString(string: newValue)
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+ return
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+ }
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+ style.alignment = NSTextAlignment.natural
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+ style.lineBreakMode = .byWordWrapping
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+ attributedText = NSAttributedString(
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+ string: newValue,
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+ attributes: [.paragraphStyle: style]
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+ )
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+ }
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+ get {
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+ return super.label.text
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+ }
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+ }
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+
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+ override init() {
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+ super.init()
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+ label.backgroundColor = DcColors.systemMessageBackgroundColor
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+ label.textColor = DcColors.defaultTextColor
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+ label.layer.cornerRadius = 10
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+ label.clipsToBounds = true
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+ }
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+
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+ required init?(coder: NSCoder) {
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+ fatalError("init(coder:) has not been implemented")
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+ }
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+}
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+
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+/// view that contains a label (horizontally centered) and
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+/// allows it's label to grow/shrink within it's available space
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+class FlexLabel: UIView {
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+
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+ var text: String? {
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+ set {
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+ label.text = newValue
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+ }
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+ get {
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+ return label.text
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+ }
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+ }
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+
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+ var textColor: UIColor {
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+ set {
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+ label.textColor = newValue
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+ }
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+ get {
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+ return label.textColor
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+ }
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+ }
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+
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+ var attributedText: NSAttributedString? {
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+ set {
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+ label.attributedText = newValue
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+ }
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+ get {
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+ return label.attributedText
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+ }
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+ }
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+
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+ lazy var label: UILabel = {
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+ let label = PaddingLabel(top: 15, left: 15, bottom: 15, right: 15)
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+ label.numberOfLines = 0
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+ return label
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+ }()
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+
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+ init() {
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+ super.init(frame: .zero)
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+ setupSubviews()
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+ }
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+
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+ required init?(coder: NSCoder) {
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+ fatalError("init(coder:) has not been implemented")
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+ }
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+
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+ private func setupSubviews() {
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+ addSubview(label)
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+ label.translatesAutoresizingMaskIntoConstraints = false
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+ label.centerYAnchor.constraint(equalTo: centerYAnchor, constant: 0).isActive = true
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+ label.centerXAnchor.constraint(equalTo: centerXAnchor, constant: 0).isActive = true
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+ label.topAnchor.constraint(equalTo: layoutMarginsGuide.topAnchor).isActive = true
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+ label.bottomAnchor.constraint(equalTo: layoutMarginsGuide.bottomAnchor).isActive = true
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+ label.widthAnchor.constraint(lessThanOrEqualTo: widthAnchor, multiplier: 0.95).isActive = true
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+ }
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+
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+ class PaddingLabel: UILabel {
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+ let insets: UIEdgeInsets
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+
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+ init(top: CGFloat, left: CGFloat, bottom: CGFloat, right: CGFloat) {
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+ self.insets = UIEdgeInsets(top: top, left: left, bottom: bottom, right: right)
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+ super.init(frame: .zero)
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+ }
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+
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+ required init?(coder: NSCoder) {
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+ fatalError("init(coder:) has not been implemented")
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+ }
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+
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+ override func drawText(in rect: CGRect) {
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+ super.drawText(in: rect.inset(by: insets))
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+ }
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+
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+ override var intrinsicContentSize: CGSize {
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+ let size = super.intrinsicContentSize
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+ return CGSize(
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+ width: size.width + insets.left + insets.right,
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+ height: size.height + insets.top + insets.bottom
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+ )
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+ }
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+ }
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+}
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nayooti