Fix: disable next button when no workspace is selected

- resolves #60

Author: fioan89

CHANGELOG.md

@@ -7,6 +7,7 @@
 
 - left panel is no longer visible when a new connection is triggered from Coder's "Recent Workspaces" panel.
   This provides consistency with other plugins compatible with Gateway
+- the "Select IDE and Project" button in the "Coder Workspaces" view is now disabled when no workspace is selected
 
 ### Changed
 

src/main/kotlin/com/coder/gateway/views/CoderGatewayConnectorWizardView.kt

@@ -29,7 +29,7 @@ class CoderGatewayConnectorWizardView : BorderLayoutPanel(), Disposable {
     private fun setupWizard() {
         background = WelcomeScreenUIManager.getMainAssociatedComponentBackground()
 
-        registerStep(CoderWorkspacesStepView())
+        registerStep(CoderWorkspacesStepView { nextButton.isEnabled = it })
         registerStep(CoderLocateRemoteProjectStepView {
             nextButton.isVisible = false
         })

src/main/kotlin/com/coder/gateway/views/steps/CoderWorkspacesStepView.kt

@@ -59,7 +59,7 @@ import javax.swing.table.DefaultTableCellRenderer
 import javax.swing.table.TableCellRenderer
 
 
-class CoderWorkspacesStepView : CoderWorkspacesWizardStep, Disposable {
+class CoderWorkspacesStepView(val enableNextButtonCallback: (Boolean) -> Unit) : CoderWorkspacesWizardStep, Disposable {
     private val cs = CoroutineScope(Dispatchers.Main)
     private var wizardModel = CoderWorkspacesWizardModel()
     private val coderClient: CoderRestClientService = ApplicationManager.getApplication().getService(CoderRestClientService::class.java)
@@ -77,6 +77,9 @@ class CoderWorkspacesStepView : CoderWorkspacesWizardStep, Disposable {
         }
 
         setSelectionMode(ListSelectionModel.SINGLE_SELECTION)
+        selectionModel.addListSelectionListener {
+            enableNextButtonCallback(selectedObject != null)
+        }
     }
 
     override val component = panel {
@@ -118,6 +121,7 @@ class CoderWorkspacesStepView : CoderWorkspacesWizardStep, Disposable {
     override val nextActionText = CoderGatewayBundle.message("gateway.connector.view.coder.workspaces.next.text")
 
     override fun onInit(wizardModel: CoderWorkspacesWizardModel) {
+        enableNextButtonCallback(false)
     }
 
     private fun loginAndLoadWorkspace() {