Simple WebView in SwiftUI

WebView.swift

import Combine
import SwiftUI
import WebKit

struct WebView: NSViewRepresentable {
	let url: URL
	@Binding var title: String

	private(set) var onCommitHandlers: [(URL) -> Void] = []

	func makeCoordinator() -> Coordinator {
		Coordinator()
	}

	func makeNSView(context: Context) -> WKWebView {
		let webview = WKWebView()
		webview.navigationDelegate = context.coordinator
		context.coordinator.setWebView(webview)
		return webview
	}

	func updateNSView(_ webView: WKWebView, context: Context) {
		context.coordinator.onCommitHandlers = onCommitHandlers
		context.coordinator.title = $title

		if context.coordinator.initialUrl != url {
			context.coordinator.initialUrl = url
			webView.load(URLRequest(url: url))
		}
	}

	func onCommit(perform handler: @escaping (URL) -> Void) -> Self {
		var copy = self
		copy.onCommitHandlers.append(handler)
		return copy
	}

	final class Coordinator: NSObject, WKNavigationDelegate {
		private weak var webView: WKWebView?
		private var cancellables = Set<AnyCancellable>()

		fileprivate var onCommitHandlers: [(URL) -> Void] = []
		fileprivate var initialUrl: URL?
		fileprivate var title: Binding<String>?

		func webView(_ webView: WKWebView, didCommit navigation: WKNavigation!) {
			guard let url = webView.url else {
				return
			}

			for handler in onCommitHandlers {
				handler(url)
			}
		}

		func setWebView(_ webView: WKWebView) {
			self.webView = webView
			webView.publisher(for: \.title)
				.compactMap { $0 }
				.sink { [weak self] newTitle in
					self?.title?.wrappedValue = newTitle
				}
				.store(in: &cancellables)
		}
	}
}