i have cloned this <intellij-platform-plugin-template> repo and try to integrate jewel following the...

# jewel

[Markus Fung]

i have cloned this intellij-platform-plugin-template repo and try to integrate jewel following the README but then this ExceptionInInitializerError happens. Am i missing something ?

[seb]

We've seen that error but haven't had time to look too much into it. It looks like it's a classloading issue that happens when the coroutines dependency is mistakenly provided via Jewel (it probably is a Gradle configuration error on our side). Can you try to exclude by hand all coroutines dependencies from your Gradle dependencies that aren't coming from the IJ platform?

[Markus Fung]

sure, let me try it

[Harish Ramanbhai Patel]

I just started using jewel for my plugin yesterday. I think the root cause seems like this call is expected to run on coroutine. So, when I wrapped my Compose code with launch { } (just to test) then crash went away. So, progress but Compose UI is not rendering. So, will continue looking further.
@seb I really want to get this working (as this is a great tool), so lmk if there are other things you want me to try.

class CodeReplicatorToolWindow(toolWindow: ToolWindow) {

    private val service = toolWindow.project.service<CodeReplicatorProjectService>()

    @OptIn(ExperimentalJewelApi::class)
    fun getContent() = JBPanel<JBPanel<*>>().apply {
        // FIXME testing workarounds for SwingComposeBridge construction arg crash
        GlobalScope.launch(Dispatchers.Main) {
            // We need to make sure this is done before Compose is attached.
            // The operation is idempotent, so we can safely do it every time.
            enableNewSwingCompositing()

            val composePenal = JewelComposePanel {
               // Compose code ...
            }
            add(composePenal)
        }
    }
}

[seb]

The call to enableNewSwingCompositing() can be done from anywhere (including the main function, if you have one) fwiw

[seb]

It only calls System.setProperty

[seb]

The only important thing is that it's called before creating the ComposePanel

[Harish Ramanbhai Patel]

It is the JewelComposePanel which calls SwingComposeBridge where it crashes

[seb]

Creating and manipulating Swing components outside of the EDT can cause issues by the way. If this is an IJ plugin, you want to use Dispatchers.EDT

[Harish Ramanbhai Patel]

Good to know

[seb]

I have never seen it cause crashes... If it does though the problem is in Compose, that function is only a convenience to set the flag that turns on the swing compositing. You could do the property setting by yourself (actually, maybe try?)

[seb]

We just wanted to spare everyone — including ourselves! — the pain of memorising the property name :)