SwiftUI pass parameter to view static function - swift

Question

I have the following code I have to make sure to pass an error message, if nothing is passed then take a generic message as error.
The problem is that I have to pass it to a static function and then set the error but I'm not succeeding.
Can you give me a hand?
ErrorView.showWindow(error: "La cartella già esiste.") error <-- "La cartella già esiste."
ErrorView.showWindow() error <-- "C'è stato un problema."
import SwiftUI
struct ErrorView: View {
var error: String = "C'è stato un problema."
var body: some View {
HStack(alignment: .center) {
Image(nsImage: NSApp.applicationIconImage)
.resizable()
.frame(width: 96, height: 96)
.shadow(radius: 5)
.padding(16)
.padding(.horizontal, 6)
.padding(.bottom, 22)
VStack(alignment: .leading, spacing: 8) {
VStack(alignment: .leading) {
Text("Git Repository")
.font(Font.title.weight(.thin))
}
.padding(.bottom, 8)
VStack(alignment: .leading, spacing: 14) {
Text(error)
}
.font(.system(size: 11))
.frame(maxHeight: .infinity)
}
}
.padding(.top, 10)
.padding(.bottom, 24)
.padding(.horizontal, 16)
.frame(width: 525, height: 200)
}
static func showWindow(error:String) {
let viewController = NSHostingController(rootView: ErrorView())
let windowController = NSWindowController(window: NSWindow(contentViewController: viewController))
if let window = windowController.window {
window.title = "Title"
window.titleVisibility = .hidden
window.titlebarAppearsTransparent = true
window.animationBehavior = .alertPanel
window.styleMask = [.titled, .closable]
}
windowController.showWindow(nil)
NSApp.activate(ignoringOtherApps: true)
}
}
struct ErrorView_Previews: PreviewProvider {
static var previews: some View {
ErrorView()
}
}

Answer 1

Set default error message to showWindow function instead of ErrorView error var.
Another mistake is you are not passing an error message to your ErrorView.
So final code is
struct ErrorView: View {
var error: String //<< Here
var body: some View {
HStack(alignment: .center) {
Image(nsImage: NSApp.applicationIconImage)
.resizable()
.frame(width: 96, height: 96)
.shadow(radius: 5)
.padding(16)
.padding(.horizontal, 6)
.padding(.bottom, 22)
VStack(alignment: .leading, spacing: 8) {
VStack(alignment: .leading) {
Text("Git Repository")
.font(Font.title.weight(.thin))
}
.padding(.bottom, 8)
VStack(alignment: .leading, spacing: 14) {
Text(error)
}
.font(.system(size: 11))
.frame(maxHeight: .infinity)
}
}
.padding(.top, 10)
.padding(.bottom, 24)
.padding(.horizontal, 16)
.frame(width: 525, height: 200)
}
static func showWindow(error:String = "C'è stato un problema.") { //<< Here
let viewController = NSHostingController(rootView: ErrorView(error: error)) //<< Here
let windowController = NSWindowController(window: NSWindow(contentViewController: viewController))
if let window = windowController.window {
window.title = "Title"
window.titleVisibility = .hidden
window.titlebarAppearsTransparent = true
window.animationBehavior = .alertPanel
window.styleMask = [.titled, .closable]
}
windowController.showWindow(nil)
NSApp.activate(ignoringOtherApps: true)
}
}