You might look into using

cellFragment

instead of

cellCache

. Then you don't need the stackpane wrapper and that ugly

this += ComponentView

syntax, but there are some pitfalls. (It is a bit advanced, and not everything is so intuitive so it might be confusing at first)

I don't know what it is, but I'm having a hard time wrapping my head around this builder syntax 😕

I'll stick with this version for now thanks. 😉

@User uploaded a file: Cleaner, but a bit more advanced (and requires SNAPSHOT)

@permalmberg The cellCache makes it a bit more confusing. Builders are really straight forward in a non-dynamic context.

Oh,that looked alot cleaner

@permalmberg here is a typical non dynamic usage of the bulders

@User uploaded a file: MainView.kt

Unfortunately you can't use it just yet, but I'll make sure it can be used like this once I get back into Windows. Linux mint has been "installing nvidia drivers" for 10 minutes now. aptd running at 100% CPU. Doesn't look promising.

@edvin No rush, I'm learning things through all these bumps so I'm happy 🙂

Putting Alyssa to bed. Back in a bit 🙂

@ron thanks, will have a look

@carlw I think I know how to manipulate the builders now so that

titlepane

can work like a normal builder. If you add a single child, then that child is added as the content node. If you add several we can either discard the previous, throw an exception or wrap them in a vbox.

titledpane could be implemented like this:

@User uploaded a file: Untitled

Then we could augment

addChildIfPossible

to support titledpane specifically:

I think that's everything we need. The

node

parameter is now optional. It might even be possible to set the node as the target if it is a parent, so you can supply a node AND a builder.

why not use

fold

? its already there

@ron fold operates on accordion, no?

yup

but should be easily adaptable

I think I hit every bump there is... So I bound the

expandedProperty()

to a

SimpleBooleanProperty

held by a

HashMap

so that I can separate the different expanded states between the `TitledPane`s and it seems to work until I click the pane to expand it at which point I get:

java.lang.RuntimeException: TitledPane.expanded : A bound value cannot be set.

I guess that makes sense (since it is bound), but do I also need to override the mouse click to update the view model?

@edvin @permalmberg About a year and a half ago, I had to implement a custom TitledPane...Maybe that might open things up? Use the familiar "titledpane" but it's actually implemented as tornadofx.TornadoFXTitledPane instead of javafx.scene.controls.TitlePane. http://bekwam.blogspot.com/2015/06/hacking-titledpane-for-resizing-in.html

The expanded property of a TitledPane is being used by the TitledPane itself. Binding it bidirectionally will most certainly cause problems. I think you're going about this the wrong way. Can you create a self contained sample perhaps?

Nice one @carlw 👍

Thanks...I think I'm going to rework that blog post into the FXDocs this weekend

@carlw I'll have a look.

@permalmberg One of the readers posted a better solution than my custom one