public static async Task <string> RunSearchWindow(NSWindow window)
{
var searchQuery = new NSSearchField(new CGRect(0, 0, 300, 20));
var searchAlert = new NSAlert()
{
AlertStyle = NSAlertStyle.Informational,
MessageText = "Enter Search Query"
};
var subissionButton = searchAlert.AddButton("Enter");
searchAlert.AddButton("Cancel");
searchAlert.AccessoryView = searchQuery;
searchAlert.Layout();
subissionButton.Enabled = false;
searchQuery.Changed += (sender, e) =>
{
subissionButton.Enabled = searchQuery.StringValue != String.Empty;
};
var result = (long)await searchAlert.BeginSheetAsync(window);
return(result == 1000 ? searchQuery.StringValue : String.Empty);
}
private const int FirstButtonResultIndex = 1000; // Result is a number starting at 1000
private IAsyncOperation <IUICommand> ShowNativeAsync(CancellationToken ct)
{
var alert = new NSAlert()
{
MessageText = Title ?? "",
InformativeText = Content ?? "",
AlertStyle = NSAlertStyle.Informational
};
var actualCommandOrder = new List <UICommand>();
UICommand defaultCommand = null;
if (DefaultCommandIndex >= 0 &&
DefaultCommandIndex < Commands.Count)
{
defaultCommand = Commands[(int)DefaultCommandIndex] as UICommand;
}
// Default command must be added first (to be default on macOS).
if (defaultCommand != null)
{
alert.AddButton(defaultCommand.Label);
actualCommandOrder.Add(defaultCommand);
}
// Add remaining alert buttons in reverse because NSAlert.AddButtons adds them
// from the right to the left.
foreach (var command in Commands.OfType <UICommand>())
{
if (command == defaultCommand)
{
// Skip, already added.
continue;
}
alert.AddButton(command.Label);
actualCommandOrder.Add(command);
}
return(AsyncOperation.FromTask <IUICommand>(async ct =>
{
var response = await alert.BeginSheetAsync(NSApplication.SharedApplication.KeyWindow);
if (actualCommandOrder.Count == 0)
{
// There is no button specified, return dummy OK result.
return new UICommand("OK");
}
var commandIndex = (int)response - FirstButtonResultIndex;
var commandResponse = actualCommandOrder[commandIndex];
commandResponse?.Invoked?.Invoke(commandResponse);
return commandResponse;
}));
}