so it scales very well if you have one of those e.g. FoundationDB, Google BigTable etc

(you can also use a sql db as the backend but the queries will just be simple k/v lookups and inserts)

There an enterprise version that was being demoed at JavaOne of speedment.

They have an in-memory connector too

But back to storage for a personal budgeting app...if you use JSON, you'll have the big advantage that there won't be much difference between your objects and your persistent data. JSON translates to Java/Kotlin easily. The main downside -- performance and RAM over a large data file -- might not be relevant for your use case. With K4Stem, we're just saving for a flat file because we don't anticipate more than a few thousand records and figure that we have the RAM to carry the model around with us. That means that all of the querying, etc is done with Kotlin syntax. I'd have totally different advice for larger sets, remote access, and concurrent use.

Say I have a TreeView of items that have (JavaFX-)properties

text:String

and

status:ValidationStatus

(UNKNOWN/VALID/INVALID/MIXED) And I want to render a tree cell with its text and give it a status-dependent class like

.validataion-unknown

And I can do it with

cellFormat { /*this: TreeCell<MyItem>, it: MyItem ->*/
    text = it.text
    addClass(".validataion-${it.status.name,toLowerCase()}")
}

Then I add an editor somewhere that changes these properties and I want them to be reflected in a TreeView

Aaaand here is when things go weird

Because TreeCells are reusable and when I collapse/expand/add/remove tree nodes, I end up having old TreeCells assigned new MyItems

and while cell textProperty is properly rebound,

bindClass

creates a listener on (old) MyItem status property which is not unbound when the cell item changes

(The samples above are fictitious, but based on my actual code, and have some nullability-related errors)

Hey everyone, I just had a quick question about inverting UI's in tornadofx. I'm making a UI that needs to support RTL, can anyone point me to a resource that could help me on my way? Any help would be appreciated, Thanks!

...and another problem was that the some of the binding was weak and was gc'd unless I save the

bindClass

returned observer

I don't know if it's the JavaFX/TornadoFX having that much leaky abstractions (unless I have good knowledge about the objects' lifecycle, how and where lambdas are saved, which bindings are weak and such I'm doomed to have this kind of bugs) - or it is my approach to TornadoFX that is wrong

you're right about the recycling. a lot of the advanced components recycle the instances (ex tableview cell instances limited in scrolling view)

@nate it's a javafx feature not tornadofx. see

Scene.nodeOrientation

Hello, is here some fan of 3D printing? I wonder if it is possible to make desktop app that could work as Slicing software using Kotlin and TornadoFX. Is it possible to use console of Slic3r which is open source to slice actual file to G-Code, and then wrap it in own UI? And is it somehow possible to view that file ( .stl or .obj ) in "subscene" as 3D object using it's vertices and faces? Could someone push me the right direction please?

@edvin is having a look at this. there might be an opportunity to bring this into the cellFragment factory structure and make the handling of userData unnecessary . worth a read. press "refresh model". double-click and edit a name on the left. refresh again to see the saved update

I think we can simplify this a lot, but I won't have time to finish it today I'm afraid. Will report back asap though!

@edvin should we add a TextFieldItemCell or TextFieldPropertCell? The control would display textfield instead of a label in edit mode. However saving would modify a property rather than a new instance based on a string

@Wetys have you checked out https://github.com/miho/JFXScad ?

Article from Rob on styling TableView with Type Safe CSS https://courses.bekwam.net/~walkerro/bkcourse_tornadofx_style_tableview.html

Snapchat-180974830.jpg

I updated my TornadoFX Sudoku solver with a branch-and-bound algorithm implemented from scratch, rather than cheating and using a library to do the solving for me. https://github.com/thomasnield/kotlin-sudoku-solver

Damn

That's some nice code

openModal/Window don’t work for you?