Add plugin settings page

src/main/kotlin/com/github/pyvenvmanage/VenvProjectViewNodeDecorator.kt

@@ -7,18 +7,23 @@ import com.intellij.ui.SimpleTextAttributes
 
 import com.jetbrains.python.icons.PythonIcons.Python.Virtualenv
 
+import com.github.pyvenvmanage.settings.PyVenvManageSettings
+
 class VenvProjectViewNodeDecorator : ProjectViewNodeDecorator {
     override fun decorate(
         node: ProjectViewNode<*>,
         data: PresentationData,
     ) {
         VenvUtils.getPyVenvCfg(node.virtualFile)?.let { pyVenvCfgPath ->
-            val pythonVersion = VenvVersionCache.getInstance().getVersion(pyVenvCfgPath.toString())
-            pythonVersion?.let { version ->
-                data.presentableText?.let { fileName ->
-                    data.clearText()
-                    data.addText(fileName, SimpleTextAttributes.REGULAR_ATTRIBUTES)
-                    data.addText(" [$version]", SimpleTextAttributes.GRAY_ATTRIBUTES)
+            val settings = PyVenvManageSettings.getInstance()
+            if (settings.showVersionInProjectView) {
+                val pythonVersion = VenvVersionCache.getInstance().getVersion(pyVenvCfgPath.toString())
+                pythonVersion?.let { version ->
+                    data.presentableText?.let { fileName ->
+                        data.clearText()
+                        data.addText(fileName, SimpleTextAttributes.REGULAR_ATTRIBUTES)
+                        data.addText(settings.formatVersion(version), SimpleTextAttributes.GRAY_ATTRIBUTES)
+                    }
                 }
             }
             data.setIcon(Virtualenv)

src/main/kotlin/com/github/pyvenvmanage/settings/PyVenvManageConfigurable.kt

@@ -0,0 +1,55 @@
+package com.github.pyvenvmanage.settings
+
+import javax.swing.JCheckBox
+import javax.swing.JComponent
+import javax.swing.JPanel
+import javax.swing.JTextField
+
+import com.intellij.openapi.options.Configurable
+import com.intellij.ui.components.JBLabel
+import com.intellij.util.ui.FormBuilder
+
+class PyVenvManageConfigurable : Configurable {
+    private var showVersionCheckBox: JCheckBox? = null
+    private var versionFormatField: JTextField? = null
+
+    override fun getDisplayName(): String = "PyVenv Manage"
+
+    override fun createComponent(): JComponent {
+        showVersionCheckBox = JCheckBox("Show Python version in project view")
+        versionFormatField =
+            JTextField().apply {
+                toolTipText = "Use \$version as placeholder for the version number"
+            }
+
+        return FormBuilder
+            .createFormBuilder()
+            .addComponent(showVersionCheckBox!!)
+            .addLabeledComponent(JBLabel("Version format:"), versionFormatField!!)
+            .addComponentFillVertically(JPanel(), 0)
+            .panel
+    }
+
+    override fun isModified(): Boolean {
+        val settings = PyVenvManageSettings.getInstance()
+        return showVersionCheckBox?.isSelected != settings.showVersionInProjectView ||
+            versionFormatField?.text != settings.versionFormat
+    }
+
+    override fun apply() {
+        val settings = PyVenvManageSettings.getInstance()
+        showVersionCheckBox?.isSelected?.let { settings.showVersionInProjectView = it }
+        versionFormatField?.text?.let { settings.versionFormat = it }
+    }
+
+    override fun reset() {
+        val settings = PyVenvManageSettings.getInstance()
+        showVersionCheckBox?.isSelected = settings.showVersionInProjectView
+        versionFormatField?.text = settings.versionFormat
+    }
+
+    override fun disposeUIResources() {
+        showVersionCheckBox = null
+        versionFormatField = null
+    }
+}

src/main/kotlin/com/github/pyvenvmanage/settings/PyVenvManageSettings.kt

@@ -0,0 +1,45 @@
+package com.github.pyvenvmanage.settings
+
+import com.intellij.openapi.components.PersistentStateComponent
+import com.intellij.openapi.components.Service
+import com.intellij.openapi.components.State
+import com.intellij.openapi.components.Storage
+import com.intellij.openapi.components.service
+
+@Service(Service.Level.APP)
+@State(
+    name = "PyVenvManageSettings",
+    storages = [Storage("PyVenvManageSettings.xml")],
+)
+class PyVenvManageSettings : PersistentStateComponent<PyVenvManageSettings.State> {
+    private var state = State()
+
+    data class State(
+        var showVersionInProjectView: Boolean = true,
+        var versionFormat: String = " [\$version]",
+    )
+
+    override fun getState(): State = state
+
+    override fun loadState(state: State) {
+        this.state = state
+    }
+
+    var showVersionInProjectView: Boolean
+        get() = state.showVersionInProjectView
+        set(value) {
+            state.showVersionInProjectView = value
+        }
+
+    var versionFormat: String
+        get() = state.versionFormat
+        set(value) {
+            state.versionFormat = value
+        }
+
+    fun formatVersion(version: String): String = versionFormat.replace("\$version", version)
+
+    companion object {
+        fun getInstance(): PyVenvManageSettings = service()
+    }
+}

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

@@ -10,6 +10,11 @@
         <notificationGroup id="Python SDK change"
                            displayType="BALLOON"/>
         <projectViewNodeDecorator implementation="com.github.pyvenvmanage.VenvProjectViewNodeDecorator"/>
+        <applicationConfigurable
+                parentId="tools"
+                instance="com.github.pyvenvmanage.settings.PyVenvManageConfigurable"
+                id="com.github.pyvenvmanage.settings.PyVenvManageConfigurable"
+                displayName="PyVenv Manage"/>
     </extensions>
 
     <actions>

src/test/kotlin/com/github/pyvenvmanage/VenvProjectViewNodeDecoratorTest.kt

@@ -19,6 +19,8 @@ import com.intellij.ide.projectView.ProjectViewNode
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.ui.SimpleTextAttributes
 
+import com.github.pyvenvmanage.settings.PyVenvManageSettings
+
 class VenvProjectViewNodeDecoratorTest {
     private lateinit var decorator: VenvProjectViewNodeDecorator
     private lateinit var node: ProjectViewNode<*>
@@ -38,19 +40,26 @@ class VenvProjectViewNodeDecoratorTest {
     @Nested
     inner class DecorateTest {
         private lateinit var versionCache: VenvVersionCache
+        private lateinit var settings: PyVenvManageSettings
 
         @BeforeEach
         fun setUpMocks() {
             mockkObject(VenvUtils)
             versionCache = mockk(relaxed = true)
             mockkObject(VenvVersionCache.Companion)
             every { VenvVersionCache.getInstance() } returns versionCache
+            settings = mockk(relaxed = true)
+            mockkObject(PyVenvManageSettings.Companion)
+            every { PyVenvManageSettings.getInstance() } returns settings
+            every { settings.showVersionInProjectView } returns true
+            every { settings.formatVersion(any()) } answers { " [${firstArg<String>()}]" }
         }
 
         @AfterEach
         fun tearDown() {
             unmockkObject(VenvUtils)
             unmockkObject(VenvVersionCache.Companion)
+            unmockkObject(PyVenvManageSettings.Companion)
         }
 
         @Test
@@ -143,5 +152,23 @@ class VenvProjectViewNodeDecoratorTest {
             // Version cache should be called twice (caching is handled by the cache service)
             verify(exactly = 2) { versionCache.getVersion(pyvenvCfgPath.toString()) }
         }
+
+        @Test
+        fun `respects showVersionInProjectView setting`(
+            @TempDir tempDir: Path,
+        ) {
+            val pyvenvCfgPath = tempDir.resolve("pyvenv.cfg")
+            Files.writeString(pyvenvCfgPath, "version = 3.11.0")
+
+            every { settings.showVersionInProjectView } returns false
+            every { VenvUtils.getPyVenvCfg(virtualFile) } returns pyvenvCfgPath
+            every { data.presentableText } returns "venv"
+
+            decorator.decorate(node, data)
+
+            verify(exactly = 0) { data.clearText() }
+            verify(exactly = 0) { data.addText(any(), any<SimpleTextAttributes>()) }
+            verify { data.setIcon(any()) } // Icon is still set
+        }
     }
 }