import AppKit final class PaddedToggleButton: NSButton {    var contentPadding = NSEdgeInsets(top: 4, left: 7, bottom: 4, right: 7) {        didSet {            if oldValue.top != self.contentPadding.top ||                oldValue.left != self.contentPadding.left ||                oldValue.bottom != self.contentPadding.bottom ||                oldValue.right != self.contentPadding.right            {                self.invalidateIntrinsicContentSize()            }        }    }     override var intrinsicContentSize: NSSize {        let size = super.intrinsicContentSize        return NSSize(            width: size.width + self.contentPadding.left + self.contentPadding.right,            height: size.height + self.contentPadding.top + self.contentPadding.bottom)    }} final class InlineIconToggleButton: NSButton {    private let iconView = NSImageView()    private let titleField = NSTextField(labelWithString: "")    private let stack = NSStackView()    private var paddingConstraints: [NSLayoutConstraint] = []    private var iconSizeConstraints: [NSLayoutConstraint] = []    private var isConfiguring = false // Batch invalidation during setup     var contentPadding = NSEdgeInsets(top: 4, left: 7, bottom: 4, right: 7) {        didSet {            self.paddingConstraints.first { $0.firstAttribute == .top }?.constant = self.contentPadding.top            self.paddingConstraints.first { $0.firstAttribute == .leading }?.constant = self.contentPadding.left            self.paddingConstraints.first { $0.firstAttribute == .trailing }?.constant = -self.contentPadding.right            self.paddingConstraints.first { $0.firstAttribute == .bottom }?.constant = -(self.contentPadding.bottom + 4)            if !self.isConfiguring { self.invalidateIntrinsicContentSize() }        }    }     override var title: String {        get { "" }        set {            super.title = ""            super.alternateTitle = ""            super.attributedTitle = NSAttributedString(string: "")            super.attributedAlternateTitle = NSAttributedString(string: "")            self.titleField.stringValue = newValue            if !self.isConfiguring { self.invalidateIntrinsicContentSize() }        }    }     override var image: NSImage? {        get { nil }        set {            super.image = nil            super.alternateImage = nil            self.iconView.image = newValue            if !self.isConfiguring { self.invalidateIntrinsicContentSize() }        }    }     func setContentTintColor(_ color: NSColor?) {        self.iconView.contentTintColor = color        self.titleField.textColor = color    }     func setTitleFontSize(_ size: CGFloat) {        self.titleField.font = NSFont.systemFont(ofSize: size)    }     func setAllowsTwoLineTitle(_ allow: Bool) {        let hasWhitespace = self.titleField.stringValue.rangeOfCharacter(from: .whitespacesAndNewlines) != nil        let shouldWrap = allow && hasWhitespace        self.titleField.maximumNumberOfLines = shouldWrap ? 2 : 1        self.titleField.usesSingleLineMode = !shouldWrap        self.titleField.lineBreakMode = shouldWrap ? .byWordWrapping : .byTruncatingTail    }     override var intrinsicContentSize: NSSize {        let size = self.stack.fittingSize        return NSSize(            width: size.width + self.contentPadding.left + self.contentPadding.right,            height: size.height + self.contentPadding.top + self.contentPadding.bottom)    }     init(title: String, image: NSImage, target: AnyObject?, action: Selector?) {        super.init(frame: .zero)        self.target = target        self.action = action        self.isConfiguring = true // Batch invalidations during setup        self.configure()        self.title = title        self.image = image        self.isConfiguring = false        self.invalidateIntrinsicContentSize() // Single invalidation after setup    }     @available(*, unavailable)    required init?(coder: NSCoder) {        nil    }     private func configure() {        self.bezelStyle = .regularSquare        self.isBordered = false        self.setButtonType(.toggle)        self.controlSize = .small        self.wantsLayer = true         self.iconView.imageScaling = .scaleNone        self.iconView.translatesAutoresizingMaskIntoConstraints = false        self.titleField.font = NSFont.systemFont(ofSize: NSFont.smallSystemFontSize)        self.titleField.alignment = .left        self.titleField.lineBreakMode = .byTruncatingTail        self.titleField.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)        self.titleField.setContentHuggingPriority(.defaultLow, for: .horizontal)        self.setContentTintColor(NSColor.secondaryLabelColor)         self.stack.orientation = .horizontal        self.stack.alignment = .centerY        self.stack.spacing = 1        self.stack.translatesAutoresizingMaskIntoConstraints = false        self.stack.addArrangedSubview(self.iconView)        self.stack.addArrangedSubview(self.titleField)        self.addSubview(self.stack)         let iconWidth = self.iconView.widthAnchor.constraint(equalToConstant: 16)        let iconHeight = self.iconView.heightAnchor.constraint(equalToConstant: 16)        self.iconSizeConstraints = [iconWidth, iconHeight]         let top = self.stack.topAnchor.constraint(            equalTo: self.topAnchor,            constant: self.contentPadding.top)        let leading = self.stack.leadingAnchor.constraint(            greaterThanOrEqualTo: self.leadingAnchor,            constant: self.contentPadding.left)        let trailing = self.stack.trailingAnchor.constraint(            lessThanOrEqualTo: self.trailingAnchor,            constant: -self.contentPadding.right)        let centerX = self.stack.centerXAnchor.constraint(equalTo: self.centerXAnchor)        centerX.priority = .defaultHigh        let bottom = self.stack.bottomAnchor.constraint(            lessThanOrEqualTo: self.bottomAnchor,            constant: -(self.contentPadding.bottom + 4))        self.paddingConstraints = [top, leading, trailing, bottom, centerX]         NSLayoutConstraint.activate(self.paddingConstraints + self.iconSizeConstraints)    }} final class StackedToggleButton: NSButton {    private let iconView = NSImageView()    private let titleField = NSTextField(labelWithString: "")    private let stack = NSStackView()    private var paddingConstraints: [NSLayoutConstraint] = []    private var iconSizeConstraints: [NSLayoutConstraint] = []    private var isConfiguring = false // Batch invalidation during setup     var contentPadding = NSEdgeInsets(top: 2, left: 4, bottom: 2, right: 4) {        didSet {            self.paddingConstraints.first { $0.firstAttribute == .top }?.constant = self.contentPadding.top            self.paddingConstraints.first { $0.firstAttribute == .leading }?.constant = self.contentPadding.left            self.paddingConstraints.first { $0.firstAttribute == .trailing }?.constant = -self.contentPadding.right            self.paddingConstraints.first { $0.firstAttribute == .bottom }?.constant = -self.contentPadding.bottom            if !self.isConfiguring { self.invalidateIntrinsicContentSize() }        }    }     override var title: String {        get { "" }        set {            super.title = ""            super.alternateTitle = ""            super.attributedTitle = NSAttributedString(string: "")            super.attributedAlternateTitle = NSAttributedString(string: "")            self.titleField.stringValue = newValue            if !self.isConfiguring { self.invalidateIntrinsicContentSize() }        }    }     override var image: NSImage? {        get { nil }        set {            super.image = nil            super.alternateImage = nil            self.iconView.image = newValue            if !self.isConfiguring { self.invalidateIntrinsicContentSize() }        }    }     func setContentTintColor(_ color: NSColor?) {        self.iconView.contentTintColor = color        self.titleField.textColor = color    }     func setTitleFontSize(_ size: CGFloat) {        self.titleField.font = NSFont.systemFont(ofSize: size)    }     func setAllowsTwoLineTitle(_ allow: Bool) {        let hasWhitespace = self.titleField.stringValue.rangeOfCharacter(from: .whitespacesAndNewlines) != nil        let shouldWrap = allow && hasWhitespace        self.titleField.maximumNumberOfLines = shouldWrap ? 2 : 1        self.titleField.usesSingleLineMode = !shouldWrap        self.titleField.lineBreakMode = shouldWrap ? .byWordWrapping : .byTruncatingTail    }     override var intrinsicContentSize: NSSize {        let size = self.stack.fittingSize        return NSSize(            width: size.width + self.contentPadding.left + self.contentPadding.right,            height: size.height + self.contentPadding.top + self.contentPadding.bottom)    }     init(title: String, image: NSImage, target: AnyObject?, action: Selector?) {        super.init(frame: .zero)        self.target = target        self.action = action        self.isConfiguring = true // Batch invalidations during setup        self.configure()        self.title = title        self.image = image        self.isConfiguring = false        self.invalidateIntrinsicContentSize() // Single invalidation after setup    }     @available(*, unavailable)    required init?(coder: NSCoder) {        nil    }     private func configure() {        self.bezelStyle = .regularSquare        self.isBordered = false        self.setButtonType(.toggle)        self.controlSize = .small        self.wantsLayer = true         self.iconView.imageScaling = .scaleNone        self.iconView.translatesAutoresizingMaskIntoConstraints = false        self.titleField.font = NSFont.systemFont(ofSize: NSFont.smallSystemFontSize - 2)        self.titleField.alignment = .center        self.titleField.lineBreakMode = .byTruncatingTail        self.titleField.maximumNumberOfLines = 1        self.titleField.usesSingleLineMode = true        self.setContentTintColor(NSColor.secondaryLabelColor)         self.stack.orientation = .vertical        self.stack.alignment = .centerX        self.stack.spacing = 0        self.stack.translatesAutoresizingMaskIntoConstraints = false        self.stack.addArrangedSubview(self.iconView)        self.stack.addArrangedSubview(self.titleField)        self.addSubview(self.stack)         let iconWidth = self.iconView.widthAnchor.constraint(equalToConstant: 16)        let iconHeight = self.iconView.heightAnchor.constraint(equalToConstant: 16)        self.iconSizeConstraints = [iconWidth, iconHeight]         // Avoid subpixel centering: pin from the top so the icon sits on whole-point coordinates.        // Force an even layout width (button width minus padding) so the icon doesn't land on 0.5pt centers.        // Reserve some bottom space for the "weekly remaining" indicator line.        let top = self.stack.topAnchor.constraint(            equalTo: self.topAnchor,            constant: self.contentPadding.top)        let leading = self.stack.leadingAnchor.constraint(            equalTo: self.leadingAnchor,            constant: self.contentPadding.left)        let trailing = self.stack.trailingAnchor.constraint(            equalTo: self.trailingAnchor,            constant: -self.contentPadding.right)        let bottom = self.stack.bottomAnchor.constraint(            lessThanOrEqualTo: self.bottomAnchor,            constant: -(self.contentPadding.bottom + 4))        self.paddingConstraints = [top, leading, trailing, bottom]         NSLayoutConstraint.activate(self.paddingConstraints + self.iconSizeConstraints)    }}