Cleaned up paths table.

src/PathsTableCellView.swift

@@ -0,0 +1,116 @@
+import AppKit
+
+protocol PathsTableCellViewDelegate: AnyObject {
+    func selectionButtonClicked(tag: Int)
+    func titleFieldTextChanged(tag: Int, text: String)
+    func titleFieldFinishedEditing(tag: Int, text: String)
+}
+
+class PathsTableCellView: NSTableCellView, NSTextFieldDelegate,
+    EditableNSTextFieldDelegate
+{
+    var id: Int = -1
+    weak var delegate: PathsTableCellViewDelegate?
+
+    private(set) var isEditing = false
+
+    public var titleField: EditableNSTextField = {
+        let field = EditableNSTextField()
+        field.isEditable = false
+        field.maximumNumberOfLines = 1
+        field.lineBreakMode = .byTruncatingTail
+        field.isBezeled = false
+        field.drawsBackground = false
+        field.translatesAutoresizingMaskIntoConstraints = false
+        return field
+    }()
+
+    var selectionButton: NSButton = {
+        let button = NSButton()
+        button.image = systemImage("hand.point.up.fill", .headline, .large,
+            .init(paletteColors: [.white, .systemRed]))
+        button.isBordered = false
+        button.sizeToFit()
+        button.toolTip = "Select Path"
+        button.translatesAutoresizingMaskIntoConstraints = false
+        return button
+    }()
+
+    override init(frame frameRect: NSRect) {
+        super.init(frame: frameRect)
+
+        titleField.delegate = self
+        titleField.auxiliaryDelegate = self
+
+        selectionButton.target = self
+        selectionButton.action = #selector(makeSelection)
+
+        addSubview(titleField)
+        addSubview(selectionButton)
+
+        titleField.setContentHuggingPriority(.defaultLow, for: .horizontal)
+        titleField.setContentCompressionResistancePriority(.defaultLow,
+            for: .horizontal)
+
+        NSLayoutConstraint.activate([
+            //titleField.topAnchor.constraint(equalTo: topAnchor),
+            //titleField.bottomAnchor.constraint(equalTo: bottomAnchor),
+            titleField.centerYAnchor.constraint(equalTo: centerYAnchor),
+            titleField.leadingAnchor.constraint(equalTo: leadingAnchor),
+            titleField.trailingAnchor.constraint(
+                equalTo: selectionButton.leadingAnchor),
+
+            selectionButton.centerYAnchor.constraint(
+                equalTo: centerYAnchor),
+            selectionButton.trailingAnchor.constraint(
+                equalTo: trailingAnchor),
+        ])
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    @objc
+    private func makeSelection() {
+        delegate?.selectionButtonClicked(tag: id)
+    }
+
+    public func startEditing() {
+        guard !isEditing else { return }
+        isEditing = true
+        titleField.isEditable = true
+        window?.makeFirstResponder(titleField)
+    }
+
+    public func stopEditing() {
+        guard isEditing else { return }
+        isEditing = false
+        titleField.isEditable = false
+        window?.makeFirstResponder(nil)
+        delegate?.titleFieldFinishedEditing(tag: id,
+            text: titleField.stringValue)
+    }
+
+    func controlTextDidChange(_ obj: Notification) {
+        delegate?.titleFieldTextChanged(tag: id,
+            text: titleField.stringValue)
+    }
+
+    func control(_ control: NSControl, textView: NSTextView,
+        doCommandBy commandSelector: Selector) -> Bool
+    {
+        if commandSelector == #selector(NSResponder.insertNewline(_:)) {
+            stopEditing()
+            return true
+        } else if commandSelector == #selector(NSResponder.insertTab(_:)) {
+            return true
+        }
+
+        return false
+    }
+
+    func lostFocus() {
+        stopEditing()
+    }
+}