@edvin looks clean and simple

@edvin will that defer evaluation or will MyCommand always have the value of myParam at assignment/creation time?

my suggestion for the separate values is coming from WPF which does something like <button> <command {binding MyCommand}> <commandParameter {binding listview/selectedItems} </button>

@carlw Actually, it assigns the parameter as a property, so the value inside the property would be extracted at execution time.

@carlw We have exactly the same semantics as WPF, but you would a assign to commandParameterProperty instead. If you assign to commandParameter it would be evaluated at assignment time.

The MyCommand(myParam) would bind to myParam if it is observable, or assign "statically" if myParam is just a normal value.

Do we have a clean way to attach a context menu to all items in a tree? If you do it with

cellFormat

it can stick around due to the way JavaFX reuses cells.

@Ruckus I think you normally attach the contextmenu only to the treeview, and then decide what should be visible/enabled when it is shown.

That sounds reasonable

Thanks

Np 🙂 Let me know if you run into issues. There are several ways to attack that, either by configuring onBeforeContextMenuShown or something like that, or by binding the menu item's visible or disabled state to something connected to the selected item etc.

Alright

Ah, it works.. the commands became a lot nicer to use now 🙂

By the way, have you guys seen the awesome Node Explorer Mike and his team has built in TornadoFX? https://www.corda.net/2017/01/03/the-node-explorer/

@carlw Could you try the new command syntax in your app?

probably not today the way things are going

wow, no i hadn't seen that... thanks for the link...

i'll get to that app on the weekend for the metric conversion which will drive the Command off of a ChoiceBox (two parameters in this case: fromUnits / toUnits)

@jchildress Seems like there might be some trading crossover

not specifically trading in bitcoins

@carlw Lots to do today?

right.. our company had done something with blockchain, but i wasn't involved....

@edvin yeah. my next enhancement is going to take the ohms units and convert the values in the listview to the changed value. the end computation (total resistance) will be updated too

@carlw Nice 🙂

I added support for @Ruckus's suggestion as well:

@User uploaded a file: Untitled

Kotlin is so fantastic. All it took was

infix fun Command<*>.with(parameter: Any?) = invoke(parameter)

It couldn't be done only in a button block because Kotlin doesn't allow multiple receivers (yet?), but if it's universal for all commands, that works great

The type of the command doesn't matter for the assignment. We could actually also add a command parameter to the button builder, but I don't know if it's worth it.

button("Click me", command = myCommand with myParam)

.