public static void ShowMvvm(BindableBaseViewModel vMdl, Window view)
{
view.DataContext = vMdl;
BindableBaseViewModel.CloseEvent(view, vMdl);
Task.Run(() => vMdl.AutoExec()); // await vMdl.AutoExec();
view.Show();
}
public static void CloseEvent(Window view, BindableBaseViewModel vwMdl)
{
async void handler(object sender, EventArgs e)
{
await vwMdl.ClosingVM();
if (_cancelClosing)
{
return;
}
vwMdl.RequestClose -= handler;
try
{
if (view != null)
{
if (Application.Current.Dispatcher.CheckAccess()) // if on UI thread
{
view.Close();
}
else
{
await Application.Current.Dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(() => view.Close()));
}
}
}
catch (Exception ex) { Trace.WriteLine(ex.Message, System.Reflection.MethodInfo.GetCurrentMethod().Name); if (Debugger.IsAttached)
{
Debugger.Break();
}
}
} // When the ViewModel asks to be closed, close the window.
vwMdl.RequestClose += handler;
////org: replaced by code cleanup on Jan 2019.
//EventHandler handler = null; // When the ViewModel asks to be closed, close the window.
//handler = async delegate
//{
// await vwMdl.ClosingVM();
// if (_cancelClosing) return;
// vwMdl.RequestClose -= handler;
// try
// {
// if (view != null)
// {
// if (Application.Current.Dispatcher.CheckAccess()) // if on UI thread
// view.Close();
// else
// await Application.Current.Dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(() => view.Close()));
// }
// }
// catch (Exception ex) { Trace.WriteLine(ex.Message, System.Reflection.MethodInfo.GetCurrentMethod().Name); if (Debugger.IsAttached) Debugger.Break(); }
//};
//vwMdl.RequestClose += handler;
}
public static bool?ShowModalMvvmAsync(BindableBaseViewModel vMdl, Window view, Window owner = null) // public static async Task<bool?> ShowModalMvvmAsync(BindableBaseViewModel vMdl, Window view, Window owner = null)
{
if (owner != null)
{
view.Owner = owner;
view.WindowStartupLocation = WindowStartupLocation.CenterOwner;
}
view.DataContext = vMdl;
CloseEvent(view, vMdl);
#if brave
Task.Run(async() => await autoexecAsyncSafe(vMdl)); //todo:
#else
await vMdl.AutoExecAsync(); //todo:
#endif
return(view.ShowDialog());
}
public static bool?ShowModalMvvm(BindableBaseViewModel vMdl, Window view, Window owner = null)
{
if (owner != null)
{
view.Owner = owner;
view.WindowStartupLocation = WindowStartupLocation.CenterOwner;
}
view.DataContext = vMdl;
BindableBaseViewModel.CloseEvent(view, vMdl);
#if brave
autoexecSafe(vMdl);
#else
autoexecSafe(vMdl);
#endif
return(view.ShowDialog());
}
static async Task autoexecAsyncSafe(BindableBaseViewModel vMdl)
{
try
{
if (Application.Current.Dispatcher.CheckAccess()) // if on UI thread
{
await vMdl.AutoExecAsync();
}
else
{
await Application.Current.Dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(async() => //todo: rejoin properly to the UI thread (Oct 2017)
await vMdl.AutoExecAsync()));
}
}
catch (Exception ex) { Trace.WriteLine(ex.Message, System.Reflection.MethodInfo.GetCurrentMethod().Name); if (Debugger.IsAttached)
{
Debugger.Break();
}
}
}