feat: improved PreferencesPanel UX, partially implements #49

- ux: first pass on UI
- ux: groups available preferences by keys-, visual-, behaviour-preferences (vertical separation without labels)
- ux: adds Restart action
- code: removes unused variables
- code: PreferencesPanel is no longer a Delegate of an view child

alt-tab-macos/ui/Application.swift

@@ -124,4 +124,13 @@ class Application: NSApplication, NSApplicationDelegate, NSWindowDelegate {
     func currentlySelectedWindow() -> OpenWindow? {
         return openWindows.count > selectedOpenWindow ? openWindows[selectedOpenWindow] : nil
     }
+
+    func relaunch(afterDelay seconds: TimeInterval = 0.5) -> Never {
+        let task = Process()
+        task.launchPath = "/bin/sh"
+        task.arguments = ["-c", "sleep \(seconds); open \"\(Bundle.main.bundlePath)\""]
+        task.launch()
+        self.terminate(nil)
+        exit(0)
+    }
 }

alt-tab-macos/ui/PreferencesPanel.swift

@@ -1,82 +1,143 @@
 import Cocoa
 
-class PreferencesPanel: NSPanel, NSTextViewDelegate {
-    var maxScreenUsage: NSTextView?
-    var windowPadding: NSTextView?
-    var cellPadding: NSTextView?
-    var cellBorderWidth: NSTextView?
-    var maxThumbnailsPerRow: NSTextView?
-    var iconSize: NSTextView?
-    var fontHeight: NSTextView?
-    var interItemPadding: NSTextView?
-    var tabKeyCode: NSTextView?
-    var windowDisplayDelay: NSTextView?
+class PreferencesPanel: NSPanel {
+    // ui: base layout
+    let panelWidth = CGFloat(400)
+    let panelHeight = CGFloat(400) // gets auto adjusted to content height
+    let panelPadding = CGFloat(40)
+
+    // ui: preferences elements
+    var maxScreenUsage: NSTextField?
+    var maxThumbnailsPerRow: NSTextField?
+    var iconSize: NSTextField?
+    var fontHeight: NSTextField?
+    var tabKeyCode: NSTextField?
+    var windowDisplayDelay: NSTextField?
     var metaKey: NSPopUpButton?
     var theme: NSPopUpButton?
     var showOnScreen: NSPopUpButton?
-    var inputsMap = [NSTextView: String]()
+
+    var invisibleTextField: NSTextField? // default firstResponder and used for triggering of focus loose
+    var inputsMap = [NSTextField: String]()
 
     override init(contentRect: NSRect, styleMask style: StyleMask, backing backingStoreType: BackingStoreType, defer flag: Bool) {
         super.init(contentRect: contentRect, styleMask: style, backing: backingStoreType, defer: flag)
         title = Application.name + " Preferences"
+        titlebarAppearsTransparent = true
         hidesOnDeactivate = false
-        contentView = makeGridView(makeLabelsAndInputs(), makeWarningLabel())
+        contentView = makeContentView()
+
+        // setup hidden element
+        invisibleTextField = NSTextField()
+        invisibleTextField?.isHidden = true
+        contentView?.subviews.append(invisibleTextField!)
+        self.initialFirstResponder = invisibleTextField
     }
 
-    private func makeLabelsAndInputs() -> [[NSView]] {
+    private func makeContentView() -> NSView {
+        let wrappingView = NSStackView(views: makePreferencesViews())
+        let contentView = NSView()
+        contentView.addSubview(wrappingView)
+
+        // visual setup
+        wrappingView.orientation = .vertical
+        wrappingView.alignment = .left
+        wrappingView.spacing = panelPadding * 0.3
+        wrappingView.topAnchor.constraint(equalTo: contentView.topAnchor, constant: panelPadding * 0.5).isActive = true
+        wrappingView.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: panelPadding * 0.5 * -1).isActive = true
+        wrappingView.leftAnchor.constraint(equalTo: contentView.leftAnchor, constant: panelPadding * 0.5).isActive = true
+        wrappingView.rightAnchor.constraint(equalTo: contentView.rightAnchor, constant: panelPadding * 0.5 * -1).isActive = true
+
+        return contentView
+    }
+
+    private func makePreferencesViews() -> [NSView] {
         return [
-            makeLabelWithDropdown(\PreferencesPanel.theme, "Main window theme", "theme", Preferences.themeMacro.labels),
             makeLabelWithDropdown(\PreferencesPanel.metaKey, "Meta key to activate the app", "metaKey", Preferences.metaKeyMacro.labels),
-            makeLabelWithInput(\PreferencesPanel.tabKeyCode, "Tab key (HIToolbox.Events)", "tabKeyCode"),
-            makeLabelWithInput(\PreferencesPanel.maxScreenUsage, "Max window size (screen %)", "maxScreenUsage"),
+            makeLabelWithInput(\PreferencesPanel.tabKeyCode, "Tab key", "tabKeyCode", "KeyCode"),
+            makeHorizontalSeparator(),
+            makeLabelWithDropdown(\PreferencesPanel.theme, "Main window theme", "theme", Preferences.themeMacro.labels),
+            makeLabelWithInput(\PreferencesPanel.maxScreenUsage, "Max window size", "maxScreenUsage", "% of screen"),
             makeLabelWithInput(\PreferencesPanel.maxThumbnailsPerRow, "Max thumbnails per row", "maxThumbnailsPerRow"),
-            makeLabelWithInput(\PreferencesPanel.iconSize, "Apps icon size (px)", "iconSize"),
-            makeLabelWithInput(\PreferencesPanel.fontHeight, "Font size (px)", "fontHeight"),
-            makeLabelWithInput(\PreferencesPanel.windowDisplayDelay, "Window apparition delay (ms)", "windowDisplayDelay"),
-            makeLabelWithDropdown(\PreferencesPanel.showOnScreen, "Show on", "showOnScreen", Preferences.showOnScreenMacro.labels)
+            makeLabelWithInput(\PreferencesPanel.iconSize, "Apps icon size", "iconSize", "px"),
+            makeLabelWithInput(\PreferencesPanel.fontHeight, "Font size", "fontHeight", "px"),
+            makeHorizontalSeparator(),
+            makeLabelWithInput(\PreferencesPanel.windowDisplayDelay, "Window apparition delay", "windowDisplayDelay", "ms"),
+            makeLabelWithDropdown(\PreferencesPanel.showOnScreen, "Show on", "showOnScreen", Preferences.showOnScreenMacro.labels),
+            makeHorizontalSeparator(),
+            makeRestartHint()
         ]
     }
 
-    private func makeGridView(_ rows: [[NSView]], _ warningLabel: BaseLabel) -> NSGridView {
-        let gridView = NSGridView(views: rows)
-        gridView.setContentHuggingPriority(.defaultLow, for: .horizontal)
-        gridView.setContentHuggingPriority(.defaultLow, for: .vertical)
-        gridView.widthAnchor.constraint(greaterThanOrEqualToConstant: 380).isActive = true
-        gridView.addRow(with: [warningLabel, NSGridCell.emptyContentView])
-        gridView.mergeCells(inHorizontalRange: NSRange(location: 0, length: 2), verticalRange: NSRange(location: gridView.numberOfRows - 1, length: 1))
-        return gridView
+    private func makeHorizontalSeparator() -> NSView {
+        let view = NSBox()
+        view.boxType = .separator
+
+        return view
     }
 
-    private func makeWarningLabel() -> BaseLabel {
-        let warningLabel = BaseLabel("Some settings require restarting the app to apply")
-        warningLabel.textColor = .systemRed
-        warningLabel.alignment = .center
-        return warningLabel
+    @objc private func restartButtonAction() {
+        self.makeFirstResponder(invisibleTextField)
+
+        if let delegate = Application.shared.delegate as? Application {
+            delegate.relaunch()
+        }
     }
 
-    private func makeLabelWithInput(_ keyPath: ReferenceWritableKeyPath<PreferencesPanel, NSTextView?>, _ labelText: String, _ rawName: String) -> [NSTextView] {
-        let label = BaseLabel(labelText)
+    private func makeRestartHint() -> NSStackView {
+        let field = NSTextField(wrappingLabelWithString: "Some settings require restarting the app to apply: ")
+        field.textColor = .systemRed
+        field.alignment = .right
+        field.widthAnchor.constraint(equalToConstant: (panelWidth - panelPadding) * 0.5).isActive = true
+
+        let button = NSButton()
+        button.title = "↻  Restart"
+        button.bezelStyle = .rounded
+        button.target = self
+        button.action = #selector(restartButtonAction)
+
+        let container = NSStackView(views: [field, button])
+        container.alignment = .bottom
+        return container
+    }
+
+    private func makeLabelWithInput(_ keyPath: ReferenceWritableKeyPath<PreferencesPanel, NSTextField?>, _ labelText: String, _ rawName: String, _ suffixText: String? = nil) -> NSStackView {
+        let label = NSTextField(wrappingLabelWithString: labelText + ": ")
         label.alignment = .right
-        let input = NSTextView()
-        input.delegate = self
-        input.font = Preferences.font
-        input.string = Preferences.rawValues[rawName]!
-        input.widthAnchor.constraint(equalToConstant: 40).isActive = true
+        label.widthAnchor.constraint(equalToConstant: (panelWidth - panelPadding) * 0.5).isActive = true
+
+        let input = NSTextField(string: Preferences.rawValues[rawName]!)
+        input.target = self
+        input.action = #selector(textDidEndEditing)
+        input.widthAnchor.constraint(equalToConstant: 32).isActive = true
+        let containerView = NSStackView(views: [label, input])
+
+        if suffixText != nil {
+            let suffix = NSTextField(labelWithString: suffixText!)
+            suffix.textColor = .gray
+            containerView.addView(suffix, in: .leading)
+        }
+
         self[keyPath: keyPath] = input
         inputsMap[input] = rawName
-        return [label, input]
+
+        return containerView
     }
 
-    private func makeLabelWithDropdown(_ keyPath: ReferenceWritableKeyPath<PreferencesPanel, NSPopUpButton?>, _ labelText: String, _ rawName: String, _ values: [String]) -> [NSView] {
-        let label = BaseLabel(labelText)
+    private func makeLabelWithDropdown(_ keyPath: ReferenceWritableKeyPath<PreferencesPanel, NSPopUpButton?>, _ labelText: String, _ rawName: String, _ values: [String]) -> NSStackView {
+        let label = NSTextField(wrappingLabelWithString: labelText + ": ")
         label.alignment = .right
+        label.widthAnchor.constraint(equalToConstant: (panelWidth - panelPadding) * 0.5).isActive = true
+
         let input = NSPopUpButton()
         input.addItems(withTitles: values)
         input.selectItem(withTitle: Preferences.rawValues[rawName]!)
         input.action = #selector(dropdownDidChange)
         input.target = self
+
         self[keyPath: keyPath] = input
-        return [label, input]
+
+        return NSStackView(views: [label, input])
     }
 
     @objc func dropdownDidChange(sender: AnyObject) throws {
@@ -95,15 +156,15 @@ class PreferencesPanel: NSPanel, NSTextViewDelegate {
         }
     }
 
-    func textDidEndEditing(_ notification: Notification) {
-        if let textView = notification.object as? NSTextView {
-            let key = inputsMap[textView]!
+    @objc func textDidEndEditing(sender: AnyObject) {
+        if let textField = sender as? NSTextField {
+            let key = inputsMap[textField]!
             do {
-                try Preferences.updateAndValidateFromString(key, textView.string)
+                try Preferences.updateAndValidateFromString(key, textField.stringValue)
                 try Preferences.saveRawToDisk()
             } catch {
                 debugPrint(key, error)
-                textView.string = Preferences.rawValues[key]!
+                textField.stringValue = Preferences.rawValues[key]!
             }
         }
     }