kotlinlang #tornadofx

@Dominaezzz Scene builder only works with fxml as far as I know...I started to add similar functionality as Scene builder to the tfx-plugin a while back but currently I don't have any spare time to continue the work on it...So currently your best bet to preview the view is to run only that view from intellij or run the hole app with hot-reloading enabled

👍 2

Dustyn

04/20/2020, 9:29 AM

Hey, did anybody have tried out to add background color to a text in a textflow ? i dont see a easy option for that...

thanerian

04/20/2020, 12:12 PM

Hi, anyone archive set stage height at runtime based on childen size, in my example I have a ObservableList of items, that could be removed/added, and based on that list I add/remove childrens inside a VBox

thanerian

04/21/2020, 7:52 AM

I checked FontAwesomeFx but i cannot see how implmenet

-icon-color

property using css DSL of tornadofx

Pedro González

04/21/2020, 8:29 AM

Continuing the trend of possibly dummy, definitely noobish questions, does tornado have any helper for enabling and controlling drag 'n drop behaviour?

Dustyn

04/21/2020, 8:50 AM

Any opinions about using today a in-memory backing databse for an offline-online-app ?

thanerian

04/21/2020, 12:25 PM

It’s possible that when open a View via openWindow() when press a button, if pressed again, instead of create a second view and window, gain focus the first one?

Dustyn

04/21/2020, 1:39 PM

Hey guys, in case somebody wanted to try out an example project with RxJava and a embedded sqlLite database Thomas Nield has built a nice demo application - i just fixed the dependencies and made it running with TornadoFX2.0 and Java13 and Gradle 6.1 with Kotlin-DSL .. i requested a pull-merge but meanwhile if somebody is interesested -> https://github.com/deggers/rxkotlinfx-tornadofx-demo

Pedro González

04/21/2020, 2:36 PM

Any idea why following the guide on tableviews, thw column() builder would make the ide unable to pick an overload?

thanerian

04/21/2020, 2:58 PM

I see lot of outdated repos across github that use javafx

brian

04/22/2020, 10:09 AM

I realize am getting a the previous details when I click to add new details in the Workspace class create button

thanerian

04/22/2020, 1:54 PM

other classes get resolved correctly? check IntelliJ dependencies and check that tornado is present

Pedro González

04/22/2020, 3:09 PM

Within a Tableview cellformat, is there a way to get a reference to the itwm from where de data is displayed? (In the examples of the guide, get a reference to the Person)? Also, is there a something like a rowFormat, which would apply the sam format to all cells in the same row?

Lilly

04/23/2020, 12:19 AM

Hi, I like Kotlin and I would like to create a desktop app for Windows. Is it possible to access the Windows API with kotlin/tornadofx in any way?

Dustyn

04/23/2020, 8:47 AM

Hi - Question. I have a ViewItemModel with a StringProperty. Now when i open a new window and inject exactly this ViewItemModel there, i see the actual value in the textfield. The commit and rollback functionalty is as well working. When i commit from the new window, the change is also in the old window. But i get an exception thrown that "java.lang.RuntimeException: A bound value cannot be set." I guess thats something javafx specific..?

ValV

04/23/2020, 2:15 PM

What Debain (Stretch) packages I'm missing for the following libraries:

jre/lib/amd64/libavplugin-53.so
jre/lib/amd64/libavplugin-54.so
jre/lib/amd64/libavplugin-55.so
jre/lib/amd64/libavplugin-56.so
jre/lib/amd64/libavplugin-57.so
jre/lib/amd64/libavplugin-ffmpeg-56.so
jre/lib/amd64/libavplugin-ffmpeg-57.so
jre/lib/amd64/libbci.so
jre/lib/amd64/libdcpr.so
jre/lib/amd64/libdeploy.so
jre/lib/amd64/libglassgtk2.so
jre/lib/amd64/libglassgtk3.so
jre/lib/amd64/libglib-lite.so
jre/lib/amd64/libjavafx_font_t2k.so
jre/lib/amd64/libjfr.so
jre/lib/amd64/libjpeg.so
jre/lib/amd64/liblcms.so
jre/lib/amd64/libnpjp2.so
jre/lib/amd64/libresource.so
jre/lib/amd64/libt2k.so

Looks like incomplete JavaFX installation (I'm running OpenJFX)?

Dustyn

04/24/2020, 3:26 PM

Is anybody running tornadofx directly from gradle? i run into module problems somehow

Dominaezzz

04/24/2020, 4:04 PM

Has anyone else gotten DDos'd by this? https://github.com/edvin/tornadofx/wiki/Error-Handler#error-handler

Dustyn

04/25/2020, 4:11 PM

Anybody an idea how i preserve my selection state from a treeView between "docks" from the workspaces? I though i could get the selectionModel in the cellDecorater and then select the vlaue which lies in my item from the ItemViewModel - but this doesnt works out.. or could it be the decorater ? I got a "master/detail" setup and in both docks the "master" is the treeView .. from the detail i know that the ItemViewModel contains the correct value - just

selectionModel.select(TreeItem(treeNodeViewModel.item))

does not seelct the item .. the item itself has an autogenerated UUID on which the equals method checks against - or should. My TreeView itself is a fragment and i open the dock via

val master = find<ProjectStructureFragment>()
val detail = find<ProjectStructureEditorView>()
workspace.dock(MasterDetailView(master,detail))

And because i use no where any scope - i should not need to use scope right? its everywhere the "default scope" i think In the MasterDetailView is again a Fragment actually which root is a splitpane and will add the two arguments It seems to me somehow i am not able to select the node again.. but if i got the implementation right, javafx will try to find the node based on the TreeNode.value But wenn i select Entry A in one Dock and Entry B in another, the selected values in the docks are saved when i go back and forth - so somehow it remembers the selectionState - but not from the ItemViewModel ?

Dustyn

04/25/2020, 7:46 PM

And on another note..

class MasterDetailView(master: UIComponent, detail: UIComponent) : Fragment() {..}

i want to initate via the find method - i tried the following but that does not work like i expect it to work.. what am i missing?

val master = find<ProjectStructureFragment>()
val detail = find<ProjectStructureEditorView>()
workspace.dock(find<MasterDetailView>("master" to master, "detail" to detail))

Thanks in advance

Pedro González

04/27/2020, 9:17 AM

Does anyone know of any library that facilitates the drawing of mindmaps/directed graphs?

Dominaezzz

04/27/2020, 2:23 PM

Has anyone used kotlinx.coroutine `Flow`s with JavaFX. In particular, converting them to `ObservableValue`s.

thanerian

04/27/2020, 3:44 PM

https://github.com/Kotlin/kotlinx.coroutines/blob/master/reactive/kotlinx-coroutines-rx2/README.md

Vinicius Carvalho

04/27/2020, 9:56 PM

Hi folks trying to start a project on java11, and I read a bunch of posts on how to properly add openjavafx

Vinicius Carvalho

04/28/2020, 12:36 PM

Hi folks, trying to pass command line arguments to my main class. But

launch<TornadoApplication>()

give compilation error, as if my TornadoApplication class was not of type javafx.application.Application, even when I extend the App super class. Any ideas on why is this happening? On OpenJDK 13

Dustyn

04/28/2020, 1:56 PM

Does anybody has implemented or an idea how to make a filterable treeView ?

Dominik wuttke

04/30/2020, 12:05 AM

Can someone help me to get tornadofx running? I am using IntelliJ and tried downloading the plugin from marketplace. When i create a project i get vcs root mapping error, when i remove this error, i got the problem that javafx can't be found. After that i got the problem, that the used gradle seems to be wrong. Is there any easier approach how to get tornadofx running? I don't know how many errors are there coming, as it seems that everytime i solve a problem I get another one.

Gabriel Sanmartin

04/30/2020, 8:43 AM

https://stackoverflow.com/questions/61487800/how-to-share-information-across-views-keep-global-state-in-tornadofx

Vinicius Carvalho

04/30/2020, 9:41 PM

Hum, seems like

cellFormat

is removing the graphics, if I remove that section I get the images for the category level, but then toString is called for

EmulatorDownload

types. Is there another way to customize the cellFormat to use either

text

graphic

Vinicius Carvalho

04/30/2020, 10:40 PM

Wrapped all TreeItems on a

NodePrinter

(I'm horrible naming things) that either use toString or a custom

(T) -> String

function. For some items I override that callback to print the version property, others that are plain string with the image I let the TreeView print them with the graphic and text

class NodePrinter<T>(val node: T, val callback: (T) -> String = { it.toString()}){

    override fun toString(): String {
        return callback(node)
    }
}

Title

Vinicius Carvalho

04/30/2020, 10:40 PM

Wrapped all TreeItems on a

NodePrinter

(I'm horrible naming things) that either use toString or a custom

(T) -> String

function. For some items I override that callback to print the version property, others that are plain string with the image I let the TreeView print them with the graphic and text

class NodePrinter<T>(val node: T, val callback: (T) -> String = { it.toString()}){

    override fun toString(): String {
        return callback(node)
    }
}

Dustyn

05/01/2020, 3:52 AM

I am personally not a fan of mixing a display name with the toString method. ToString shall be the representation of the object for the programmer for logging or uargh-debugging purposes. I'd prefer a "displayName" property on those objects for that matter. And happy to see you resolved your issue! Thanks for sharing your thoughts

Vinicius Carvalho

05/01/2020, 11:51 AM

In this case is more than just a displayName actually, I need to switch which property to display

its more a stringconverter than anything else

so depending on the TreeItem Type, I use a different function. Could use a method called displayName() for sure and again rely on old toString for simple types for simplicity

But the problem is that if I go the route without toString it won't work

because the moment I use

cellFormat {
text = nodePrinter.displayName()
}

The images will stop showing. I could not find a way (not without a lot of effort at least) to mix text and graphic depending on the item being processed

I found an answer here: https://stackoverflow.com/questions/46207822/tornadofx-treeview-cell-factory-not-being-called but seems a hell of work for such thing

Another thing I'm still struggling with JavaFX/Tornado is how to really decouple my domain objects from the view/model I'm still not clear on the whole ViewMode ItemViewModel concept from the docs.

Most my domain objects are really simple POJOs mapped as data classes from either database or REST access.

Do I map those to a ViewModel/ItemViewModel, because I would really like to avoid having SimpleStringProperties on my domain objects, and having to create another object to have them and the view model, now I have 3 types to represent a domain entity 😞

Dustyn

05/02/2020, 4:02 AM

Depends what you want and how much abstraction you need. You know "Clean architecture" from Uncle Bob? You could have at GUI level your gui models whilst in the core your real domain objects are sitting and from layer to layer you can use a transformater .. there is a nice book about this topic "Getting your hands dirty with clean architecture" 🙂 <If you do not want SimpleStringProperties in your Domain i get it - which means it is important to you that your Domain is decoupled from the specific GUI framework you are using. And that the nice part of clean design, database, gui, everything are external factors which should be easily exchangeable. In order not to get messed up during coding i think handling the layers with gradle projects is a nice approach - only the gui layer can then access javafx-properties so you can during compile time be safe .. but long topic and really depends if you think this piece of software will be there in 10 years or not.

and in the end - nothing beats simplicity .. clean architecture is quite a big chunk of work.

I mean all you'd do would be a mapping from domain to gui-domain in hope you'll need it someday when you'd change the gui framework, right?

Vinicius Carvalho

05/03/2020, 12:14 AM

Thanks for the input, in the end I think I may just be overthinking this. Having my view model be just a representation of domain object elsewhere is not that bad. Also made piece with those that come from a database, for now the app I'm building ship with its own H2 database, its not as I will need those objects anywhere else.

Again, thanks for all the help

Having a lot of fun learning more about javafx and tornado. I was already giving up on UI and java. I'm glad we have a lightway alternative to electron 😄 and one that does not require you to write javascript

Dustyn

05/03/2020, 11:10 AM

oh man yes! i personally couldnt stand javascript. Typescript okay, maybe. But UI with kotlin and tornadofx is just really nice

out of curiosity - why did you need a embedded db for your application? i had this thought as well - but for now i will go with just a normal tree datastructure .. but for now i have just one view where all data sits

Vinicius Carvalho

05/03/2020, 4:03 PM

There's no real reason besides the fact that I'm way more familiar with SQL. I may need to do some more complex queries. H2 is a phenomenal DB, performance is amazing for a single client. I prefer it to sqlite to be honest. One problem I'm having is that if my app crashes (happens quite often in development) my db can get locked, as the file lock is not released, this is a bit of pain.

Another thing I like about H2, because its just SQL I'm using flyway for db migration for example, so on start I create all tables and insert base entities. In a real app, when a new version gets released I can count on flyway to perform table schema updates, find deltas and such. neat feature

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