Example code - `MyToolWindowFactory` tool window basic implementation

CHANGELOG.md

@@ -7,6 +7,7 @@
 ### Added
 - Migrate to Gradle Provider API improving configuration cache compatibility
 - Example code - `FrameStateListener` application listener
+- Example code - `MyToolWindowFactory` tool window basic implementation
 
 ### Changed
 - Update `platformVersion` to `2022.1.4`

src/main/kotlin/org/jetbrains/plugins/template/services/MyProjectService.kt

@@ -10,13 +10,8 @@ class MyProjectService(project: Project) {
 
     init {
         thisLogger().info(MyBundle.message("projectService", project.name))
-
-        System.getenv("CI")
-            ?: TODO("Don't forget to remove all non-needed sample code files with their corresponding registration entries in `plugin.xml`.")
+        thisLogger().warn("Don't forget to remove all non-needed sample code files with their corresponding registration entries in `plugin.xml`.")
     }
 
-    /**
-     * Chosen by fair dice roll, guaranteed to be random.
-     */
-    fun getRandomNumber() = 4
+    fun getRandomNumber() = (1..100).random()
 }

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

@@ -0,0 +1,47 @@
+package org.jetbrains.plugins.template.toolWindow
+
+import com.intellij.openapi.components.service
+import com.intellij.openapi.diagnostic.thisLogger
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.wm.ToolWindow
+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.plugins.template.MyBundle
+import org.jetbrains.plugins.template.services.MyProjectService
+import javax.swing.JButton
+
+
+class MyToolWindowFactory : ToolWindowFactory {
+
+    init {
+        thisLogger().warn("Don't forget to remove all non-needed sample code files with their corresponding registration entries in `plugin.xml`.")
+    }
+
+    private val contentFactory = ContentFactory.SERVICE.getInstance()
+
+    override fun createToolWindowContent(project: Project, toolWindow: ToolWindow) {
+        val myToolWindow = MyToolWindow(toolWindow)
+        val content = contentFactory.createContent(myToolWindow.getContent(), null, false)
+        toolWindow.contentManager.addContent(content)
+    }
+
+    override fun shouldBeAvailable(project: Project) = true
+
+    class MyToolWindow(toolWindow: ToolWindow) {
+
+        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())
+                }
+            })
+        }
+    }
+}

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

@@ -8,8 +8,11 @@
 
     <resource-bundle>messages.MyBundle</resource-bundle>
 
+    <extensions defaultExtensionNs="com.intellij">
+        <toolWindow factoryClass="org.jetbrains.plugins.template.toolWindow.MyToolWindowFactory" id="MyToolWindow"/>
+    </extensions>
+
     <applicationListeners>
-        <listener class="org.jetbrains.plugins.template.listeners.MyFrameStateListener"
-                  topic="com.intellij.ide.FrameStateListener"/>
+        <listener class="org.jetbrains.plugins.template.listeners.MyFrameStateListener" topic="com.intellij.ide.FrameStateListener"/>
     </applicationListeners>
 </idea-plugin>

src/main/resources/messages/MyBundle.properties

@@ -1,3 +1,4 @@
 name=My Plugin
-applicationService=Application service
 projectService=Project service: {0}
+randomLabel=The random number is: {0}
+shuffle=Shuffle

src/test/kotlin/org/jetbrains/plugins/template/MyPluginTest.kt

@@ -32,7 +32,7 @@ class MyPluginTest : BasePlatformTestCase() {
     fun testProjectService() {
         val projectService = project.service<MyProjectService>()
 
-        assertEquals(4, projectService.getRandomNumber())
+        assertNotSame(projectService.getRandomNumber(), projectService.getRandomNumber())
     }
 
     override fun getTestDataPath() = "src/test/testData/rename"