private StackHandle <T> PrepareAndShowDialogBox <T>(string message, IEnumerable <T> buttons, ImageSource image)
{
var dispatcher = View.Dispatcher;
if (!dispatcher.CheckAccess())
{
return(dispatcher.Invoke(() => PrepareAndShowDialogBox <T>(message, buttons, image), DispatcherPriority.Send));
}
var entries = new List <ActionContextEntry>();
var entry = ActionContextEntry.Create(ActionContextConstants.DialogBoxMessage, message, false);
entries.Add(entry);
if (image != null)
{
var imageEntry = ActionContextEntry.Create(ActionContextConstants.DialogBoxImage, image, false);
entries.Add(imageEntry);
}
if (buttons != null)
{
var boxedButtons = buttons.Where(x => x != null).Cast <object>().ToList().AsReadOnly();
if (boxedButtons.Count > 0)
{
var buttonEntry = ActionContextEntry.Create(ActionContextConstants.DialogBoxButtons, boxedButtons, false);
entries.Add(buttonEntry);
}
}
var builder = CreateWizardBuilder();
builder.AddStep <DialogView, DialogViewModel>(parameters: entries.ToArray());
builder.Size = new ExtendedSize(480, 120, minWidth: 480, minHeight: 120);
Guid stackId;
var overlay = CreateWizardOverlay(builder, out stackId);
var handle = new StackHandle <T>(stackId);
overlay.Tag = handle;
IsStacked = Interlocked.Increment(ref _stackCounter) > 0;
return(handle);
}
/// <summary>
/// Executes async.
/// </summary>
/// <returns>A value indicating wether to continue execution.</returns>
public sealed override bool Execute()
{
if (!base.Execute())
{
return(false);
}
var result = Return();
StackInfo info;
if (ActionContext.TryGetValue(ActionContextConstants.StackHandle, out info))
{
_handle = info as StackHandle <string>;
if (_handle != null)
{
_result = ActionContext.GetValue <string>(ActionContextConstants.DialogBoxResult);
}
}
return(result);
}
