SwiftUI Mac OSX SearchBar element

Question

I am currently developing a app in SwiftUI for MacOSX. I am having a custom List View with many rows. I want a SearchBar to filter my rows.

Coming from Objective C, I know there was a SearchBar and SearchBar Controller. I just would need a SearchBar with the default Mac OS X Search Bar design. However, I didn't found anything.

There was a answer on Stackoverflow, which dealted with the same problem but for iOS. But that is not convertible to Mac OS X.

Currently I am using a regular TextField and wrote my own filter script, which worked fine. However, I want to SearchField UI as Apple uses it. Is that possible?

Is there any chance to use AppKit to achieve that?

That's what I want to achieve:

Procrastin8 · Accepted Answer · 2020-04-23 10:27:00Z

2

Your best bet is to wrap an NSSearchField in an NSViewRepresentable.

answered Apr 23, 2020 at 10:27

Procrastin8

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4 Comments

davidev Over a year ago

Thank you. Thats how I did it :) I Share My code later on

Maschina Over a year ago

@davidev Can you share your snippet? Thanks!

davidev Over a year ago

@Maschina Posted it :)

Kaunteya Over a year ago

Paul has created one such view in his app. You can find it here github.com/twostraws/ControlRoom/blob/main/ControlRoom/…

davidev · Accepted Answer · 2021-01-10 20:27:20Z

Here is my solution that I am now using:

struct FirstResponderNSSearchFieldRepresentable: NSViewControllerRepresentable {

    @Binding var text: String

      func makeNSViewController(
        context: NSViewControllerRepresentableContext<FirstResponderNSSearchFieldRepresentable>
      ) -> FirstResponderNSSearchFieldController {
        return FirstResponderNSSearchFieldController(text: $text)
      }

      func updateNSViewController(
        _ nsViewController: FirstResponderNSSearchFieldController,
        context: NSViewControllerRepresentableContext<FirstResponderNSSearchFieldRepresentable>
      ) {
      }
}

And here the NSViewController

class FirstResponderNSSearchFieldController: NSViewController {

  @Binding var text: String
  var isFirstResponder : Bool = true

    init(text: Binding<String>, isFirstResponder : Bool = true) {
    self._text = text
    super.init(nibName: nil, bundle: nil)
  }

  required init?(coder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
  }

  override func loadView() {
    let searchField = NSSearchField()
    searchField.delegate = self
    
    self.view = searchField
  }

  override func viewDidAppear() {
    self.view.window?.makeFirstResponder(self.view)
  }
}


extension FirstResponderNSSearchFieldController: NSSearchFieldDelegate {

  func controlTextDidChange(_ obj: Notification) {
    if let textField = obj.object as? NSTextField {
      self.text = textField.stringValue
    }
  }
}

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