public void ShowWindow(ViewModelBase viewModel)
{
lock (lockObject)
{
var window = GetWindow(viewModel, false);
window.DataContext = viewModel;
window.Show();
}
}
public bool? ShowDialog(ViewModelBase viewModel)
{
lock (lockObject)
{
var window = GetWindow(viewModel, true);
window.DataContext = viewModel;
return window.ShowDialog();
}
}
private Window GetWindow(ViewModelBase viewModel, bool isDialogWindow)
{
lock (lockObject)
{
var window = openedWindows.SingleOrDefault(x => x.DataContext == viewModel);
if (window != null)
{
window.WindowState = WindowState.Normal;
window.Activate();
return window;
}
if (isDialogWindow)
{
// Set window owner in order to prevent that it becomes hidden when minimizing the application
window = new DialogWindow
{
Owner = openedWindows.Any() ? openedWindows.Last() : Application.Current.MainWindow
};
}
else
{
// Doesn't need a window owner since it's shown in the taskbar
window = new StandardWindow();
}
openedWindows.Add(window);
window.Closed += (sender, e) =>
{
Closed?.Invoke(sender, e);
openedWindows.Remove(window);
window = null;
if (!openedWindows.Any() && Application.Current.MainWindow != null)
{
Application.Current.MainWindow.Activate();
}
};
window.Closing += (sender, e) =>
{
Closing?.Invoke(sender, e);
};
return window;
}
}
public void Close(ViewModelBase viewModel, bool dialogResult = false)
{
lock (lockObject)
{
var window = openedWindows.SingleOrDefault(w => w.DataContext == viewModel);
if (window != null)
{
if (dialogResult) window.DialogResult = true;
openedWindows.Remove(window);
window.Close();
}
}
}