private MenuItem CreateMenuItem(object sender, RepositoryAction action, IEnumerable <RepositoryView> affectedViews = null)
{
Action <object, object> clickAction = (object clickSender, object clickArgs) =>
{
if (action?.Action != null)
{
var coords = new float[] { 0, 0 };
// run actions in the UI async to not block it
if (action.ExecutionCausesSynchronizing)
{
Task.Run(() => SetViewsSynchronizing(affectedViews, true))
.ContinueWith(t => action.Action(null, coords))
.ContinueWith(t => SetViewsSynchronizing(affectedViews, false));
}
else
{
Task.Run(() => action.Action(null, coords));
}
}
};
var item = new AcrylicMenuItem()
{
Header = action.Name,
IsEnabled = action.CanExecute
};
item.Click += new RoutedEventHandler(clickAction);
// this is a deferred submenu. We want to make sure that the context menu can pop up
// fast, while submenus are not evaluated yet. We don't want to make the context menu
// itself slow because the creation of the submenu items takes some time.
if (action.DeferredSubActionsEnumerator != null)
{
// this is a template submenu item to enable submenus under the current
// menu item. this item gets removed when the real subitems are created
item.Items.Add("");
void SelfDetachingEventHandler(object _, RoutedEventArgs __)
{
item.SubmenuOpened -= SelfDetachingEventHandler;
item.Items.Clear();
foreach (var subAction in action.DeferredSubActionsEnumerator())
{
item.Items.Add(CreateMenuItem(sender, subAction));
}
Console.WriteLine($"Added {item.Items.Count} deferred sub action(s).");
}
item.SubmenuOpened += SelfDetachingEventHandler;
}
return(item);
}
private MenuItem CreateMenuItem(object sender, RepositoryAction action, IEnumerable <RepositoryView> affectedViews = null)
{
Action <object, object> clickAction = (object clickSender, object clickArgs) =>
{
if (action?.Action != null)
{
var coords = new float[] { 0, 0 };
// run actions in the UI async to not block it
if (action.ExecutionCausesSynchronizing)
{
Task.Run(() => SetViewsSynchronizing(affectedViews, true))
.ContinueWith(t => action.Action(null, coords))
.ContinueWith(t => SetViewsSynchronizing(affectedViews, false));
}
else
{
Task.Run(() => action.Action(null, coords));
}
}
};
var item = new AcrylicMenuItem()
{
Header = action.Name,
IsEnabled = action.CanExecute
};
item.Click += new RoutedEventHandler(clickAction);
if (action.SubActions != null)
{
foreach (var subAction in action.SubActions)
{
item.Items.Add(CreateMenuItem(sender, subAction));
}
}
return(item);
}