protected override async Task Execute()
{
// if not modal
if (!Workitem.IsModal)
{
// focus next workitem
IWorkItem toFocus = null;
if (Workitem.IsFocused && CurrentContextService.Collection.Count > 1)
{
int index = CurrentContextService.Collection.IndexOf(Workitem);
if (index > 0)
{
toFocus = CurrentContextService.Collection[index - 1];
}
else if (index == 0)
{
toFocus = CurrentContextService.Collection[index + 1];
}
}
else if (Workitem.IsFocused && CurrentContextService.Collection.Count <= 1)
{
await CurrentContextService.FocusWorkitem(null);
}
if (toFocus != null)
{
await CurrentContextService.FocusWorkitem(toFocus);
}
}
}
protected override async Task Execute()
{
// if not modal
if (!(Workitem.IsModal))
{
await CurrentContextService.FocusWorkitem((IWorkItem)Workitem.Parent);
}
}
/// <summary>
/// Internal Launch implementation
/// </summary>
/// <param name="modalMetadata">Modal metadata</param>
/// <returns></returns>
private async Task <IObservable <WorkitemEventArgs> > LaunchInternal(ModalOptions modalMetadata = null)
{
try
{
//Logger.LogWithWorkitemData(String.Format("Opening workitem {0}{1}.", Workitem.WorkItemName, ShouldOpenModal ? " in modal state" : ""), LogLevel.Informative, Workitem);
// Trick to let ui have some time to update its state
await TaskManager.Run(() => Thread.Sleep(50)).ConfigureAwait(false);
// Get the workitem type
Type type = Workitem.GetType();
// If workitem is single instance and there is alredy a workitem
// with the same type open focus the opened otherwise continue launching
SingleInstanceWorkitemAttribute attribute = type.GetCustomAttributes(typeof(SingleInstanceWorkitemAttribute), false).FirstOrDefault() as SingleInstanceWorkitemAttribute;
if (attribute != null)
{
IWorkItem exists = CurrentContextService.Collection.Where(w => w.GetType().Equals(type)).FirstOrDefault();
if (exists != null)
{
await CurrentContextService.FocusWorkitem(exists).ConfigureAwait(false);
return(null);
}
}
var impl = Workitem.GetType().GetInterfaces().FirstOrDefault(x =>
x.IsGenericType &&
x.GetGenericTypeDefinition() == typeof(ISupportsInitialization <>));
// If workitem supports initialization than do initialize it
if (impl != null)
{
//Logger.LogWithWorkitemData("Initializing workitem", LogLevel.Informative, Workitem);
try
{
var initType = impl.GetGenericArguments()[0];
// initialize
if (Data == null || initType.IsAssignableFrom(Data.GetType()))
{
var methodInfo = Workitem.GetType().GetMethod("Initialize", System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance);
methodInfo.Invoke(Workitem, new object[] { Data });
}
else
{
throw new ArgumentException($"Workitem supports initialization only by {initType}");
}
}
catch (Exception e)
{
// Log error with workitem data
//Logger.LogWithWorkitemData("Workitem initialization failed", LogLevel.Exception, Workitem, e);
// Show error to the UI
UIManager.Error("Failed to Initialize Workitem");
return(null);
}
}
// Log
//Logger.LogWithWorkitemData("Configuring Workitem", LogLevel.Informative, Workitem);
// Configure Workitem
Workitem.Configure();
// if should open modal set the workitem window
if (ShouldOpenModal)
{
// if no custom modalMetadata is provided get the workitem default
if (modalMetadata == null)
{
ModalMetadata = Workitem.Configuration.GetOption <ModalOptions>();
}
else
{
ModalMetadata = modalMetadata;
}
// Set the workitem window in UI thread
Application.Current.Dispatcher.InvokeIfNeeded(() => Workitem.Window = CurrentContextService.InitModalWindow(Project.GetOption <RegionOptions>().CreateModalWindow(), Workitem, ModalMetadata));
}
// Execute isnatce specific launching
await Execute().ConfigureAwait(false);
// If Workitem is NullWorkitem set the WorkitemCollection.Null
// otherwise add to the collection
if (Workitem is NullWorkitem)
{
CurrentContextService.Collection.Null = Workitem;
}
else if (!ShouldOpenModal || !ModalMetadata.IsDialog)
{
CurrentContextService.Collection.Add(Workitem);
}
// If should open modal open the window
if (ShouldOpenModal)
{
//// Log
//Logger.LogWithWorkitemData("Showing modal window", LogLevel.Informative, Workitem);
// If should open in dialog mode call Workitem.Window.ShowDialog
if (ModalMetadata.IsDialog)
{
//// end loading now because after show dialog is execution will be blocked
//CurrentContextService.EndLoading();
// Show dialog
Application.Current.Dispatcher.InvokeIfNeeded(() => Workitem.Window.ShowDialog());
}
else
{
Application.Current.Dispatcher.InvokeIfNeeded(() => Workitem.Window.Show());
}
}
if (!ShouldOpenModal || !ModalMetadata.IsDialog)
{
await CurrentContextService.FocusWorkitem(Workitem).ConfigureAwait(false);
}
// return the communication channel
return(Channel);
}
catch (Exception e)
{
// Try and fix the broken parts
CurrentContextService.Collection.Remove(Workitem);
Workitem.Dispose();
//// Log workitem exception
//Logger.LogWithWorkitemData("Failed to open workitem", LogLevel.Exception, Workitem, e);
// Show error in the UI
UIManager.Error("Failed to open workitem");
// return an empty channel
return(Observable.Empty <WorkitemEventArgs>());
}
finally
{
//// finally end loding for modal
//if (ShouldOpenModal)
// CurrentContextService.EndLoading();
}
}