Compose setup

.idea/gradle.xml

@@ -5,6 +5,7 @@
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="jbr-17" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />

build.gradle.kts

@@ -9,6 +9,7 @@ plugins {
     alias(libs.plugins.changelog) // Gradle Changelog Plugin
     alias(libs.plugins.qodana) // Gradle Qodana Plugin
     alias(libs.plugins.kover) // Gradle Kover Plugin
+    alias(libs.plugins.composeCompiler) // Gradle Compose Compiler Plugin
 }
 
 group = providers.gradleProperty("pluginGroup").get()
@@ -38,6 +39,21 @@ dependencies {
     intellijPlatform {
         create(providers.gradleProperty("platformType"), providers.gradleProperty("platformVersion"))
 
+        // Compose support dependencies
+        bundledModules(
+            "intellij.libraries.skiko",
+            "intellij.libraries.compose.foundation.desktop",
+            "intellij.platform.jewel.foundation",
+            "intellij.platform.jewel.ui",
+            "intellij.platform.jewel.ideLafBridge",
+            "intellij.platform.jewel.markdown.core",
+            "intellij.platform.jewel.markdown.ideLafBridgeStyling",
+            "intellij.platform.jewel.markdown.extensions.gfmTables",
+            "intellij.platform.jewel.markdown.extensions.gfmStrikethrough",
+            "intellij.platform.jewel.markdown.extensions.gfmAlerts",
+            //"intellij.platform.jewel.markdown.extensions.autolink", // Not available in 2025.1.1
+        )
+
         // Plugin Dependencies. Uses `platformBundledPlugins` property from the gradle.properties file for bundled IntelliJ Platform plugins.
         bundledPlugins(providers.gradleProperty("platformBundledPlugins").map { it.split(',') })
 

gradle.properties

@@ -7,12 +7,12 @@ pluginRepositoryUrl = https://github.com/JetBrains/intellij-platform-plugin-temp
 pluginVersion = 2.1.0
 
 # Supported build number ranges and IntelliJ Platform versions -> https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html
-pluginSinceBuild = 242
+pluginSinceBuild = 251
 pluginUntilBuild = 252.*
 
 # IntelliJ Platform Properties -> https://plugins.jetbrains.com/docs/intellij/tools-gradle-intellij-plugin.html#configuration-intellij-extension
 platformType = IC
-platformVersion = 2024.2.5
+platformVersion = 2025.1.1
 
 # Plugin Dependencies -> https://plugins.jetbrains.com/docs/intellij/plugin-dependencies.html
 # Example: platformPlugins = com.jetbrains.php:203.4449.22, org.intellij.scala:2023.3.27@EAP

gradle/libs.versions.toml

@@ -20,3 +20,4 @@ intelliJPlatform = { id = "org.jetbrains.intellij.platform", version.ref = "inte
 kotlin = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }
 kover = { id = "org.jetbrains.kotlinx.kover", version.ref = "kover" }
 qodana = { id = "org.jetbrains.qodana", version.ref = "qodana" }
+composeCompiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }

src/main/kotlin/org/jetbrains/plugins/template/toolWindow/MyToolWindowFactory.kt

@@ -1,5 +1,19 @@
 package org.jetbrains.plugins.template.toolWindow
 
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
 import com.intellij.openapi.components.service
 import com.intellij.openapi.diagnostic.thisLogger
 import com.intellij.openapi.project.Project
@@ -8,6 +22,9 @@ import com.intellij.openapi.wm.ToolWindowFactory
 import com.intellij.ui.components.JBLabel
 import com.intellij.ui.components.JBPanel
 import com.intellij.ui.content.ContentFactory
+import org.jetbrains.jewel.bridge.JewelComposePanel
+import org.jetbrains.jewel.ui.component.DefaultButton
+import org.jetbrains.jewel.ui.component.Text
 import org.jetbrains.plugins.template.MyBundle
 import org.jetbrains.plugins.template.services.MyProjectService
 import javax.swing.JButton
@@ -31,15 +48,17 @@ class MyToolWindowFactory : ToolWindowFactory {
 
         private val service = toolWindow.project.service<MyProjectService>()
 
-        fun getContent() = JBPanel<JBPanel<*>>().apply {
-            val label = JBLabel(MyBundle.message("randomLabel", "?"))
-
-            add(label)
-            add(JButton(MyBundle.message("shuffle")).apply {
-                addActionListener {
-                    label.text = MyBundle.message("randomLabel", service.getRandomNumber())
+        fun getContent() = JewelComposePanel {
+            Column(Modifier.fillMaxWidth().padding(16.dp)) {
+                var param by remember { mutableStateOf("?") }
+                Text(MyBundle.message("randomLabel", param))
+                Spacer(Modifier.height(8.dp))
+                DefaultButton(onClick = {
+                    param = service.getRandomNumber().toString()
+                }) {
+                    Text(MyBundle.message("shuffle"))
                 }
-            })
+            }
         }
     }
 }

src/main/resources/META-INF/plugin.xml

@@ -4,7 +4,18 @@
     <name>IntelliJ Platform Plugin Template</name>
     <vendor>JetBrains</vendor>
 
-    <depends>com.intellij.modules.platform</depends>
+    <dependencies>
+        <module name="intellij.libraries.skiko"></module>
+        <module name="intellij.libraries.compose.foundation.desktop"></module>
+        <module name="intellij.platform.jewel.foundation"></module>
+        <module name="intellij.platform.jewel.ui"></module>
+        <module name="intellij.platform.jewel.ideLafBridge"></module>
+        <module name="intellij.platform.jewel.markdown.core"></module>
+        <module name="intellij.platform.jewel.markdown.ideLafBridgeStyling"></module>
+        <module name="intellij.platform.jewel.markdown.extensions.gfmTables"></module>
+        <module name="intellij.platform.jewel.markdown.extensions.gfmStrikethrough"></module>
+        <module name="intellij.platform.jewel.markdown.extensions.gfmAlerts"></module>
+    </dependencies>
 
     <resource-bundle>messages.MyBundle</resource-bundle>
 

src/main/resources/messages/MyBundle.properties

@@ -1,3 +1,6 @@
 projectService=Project service: {0}
 randomLabel=The random number is: {0}
 shuffle=Shuffle
+helloWorld=Hello world #{0}
+increment=Moar
+action.dev.sebastiano.jewel.ijplugin.demo.text=Jewel Demo Dialog