New Project Wizard IDEA-285038 install language plugin in Plugins Configurable

(cherry picked from commit 7ddcecd6b989d144ab756e71d976ee03d09dcacd)

GitOrigin-RevId: ab299d3a86c753e51b14c2379bccc803963f4608

platform/platform-impl/src/com/intellij/ide/wizard/AbstractNewProjectWizardMultiStepWithAddButton.kt

@@ -2,6 +2,7 @@
 package com.intellij.ide.wizard
 
 import com.intellij.icons.AllIcons
+import com.intellij.ide.plugins.PluginManagerConfigurable
 import com.intellij.openapi.actionSystem.*
 import com.intellij.openapi.actionSystem.PlatformCoreDataKeys.CONTEXT_COMPONENT
 import com.intellij.openapi.actionSystem.impl.ActionButton
@@ -9,14 +10,17 @@ import com.intellij.openapi.actionSystem.impl.IdeaActionButtonLook
 import com.intellij.openapi.application.ModalityState
 import com.intellij.openapi.extensions.ExtensionPointName
 import com.intellij.openapi.extensions.PluginId
+import com.intellij.openapi.options.ShowSettingsUtil
 import com.intellij.openapi.progress.ProgressManager
 import com.intellij.openapi.project.DumbAwareAction
 import com.intellij.openapi.ui.popup.JBPopupFactory
 import com.intellij.openapi.updateSettings.impl.pluginsAdvertisement.InstallPluginTask
+import com.intellij.openapi.util.registry.Registry
 import com.intellij.ui.UIBundle
 import com.intellij.ui.awt.RelativePoint
 import com.intellij.ui.dsl.builder.Row
 import com.intellij.ui.dsl.builder.components.SegmentedButtonBorder
+import java.util.function.Consumer
 import java.util.function.Supplier
 import javax.swing.JComponent
 
@@ -56,7 +60,14 @@ abstract class AbstractNewProjectWizardMultiStepWithAddButton<S : NewProjectWiza
     override fun actionPerformed(e: AnActionEvent) {
       val pluginId = PluginId.getId(additionalStepPlugins[language]!!)
       val component = e.dataContext.getData(CONTEXT_COMPONENT)!!
-      ProgressManager.getInstance().run(InstallPluginTask(setOf(pluginId), ModalityState.stateForComponent(component)))
+      if (Registry.`is`("new.project.wizard.modal.plugin.install", false)) {
+        ProgressManager.getInstance().run(InstallPluginTask(setOf(pluginId), ModalityState.stateForComponent(component)))
+      }
+      else {
+        ShowSettingsUtil.getInstance().editConfigurable(null, PluginManagerConfigurable(), Consumer {
+          it.openMarketplaceTab("/tag:Languages $language")
+        })
+      }
     }
   }
 }
\ No newline at end of file

platform/platform-resources/src/META-INF/PlatformExtensions.xml

@@ -1331,6 +1331,8 @@
     <persistentFsConnectionListener implementation="com.intellij.openapi.vfs.impl.jar.ArchiveCachesCleaner"/>
     <applicationService serviceInterface="com.intellij.openapi.progress.TaskSupport"
                         serviceImplementation="com.intellij.openapi.progress.impl.PlatformTaskSupport"/>
+    <registryKey key="new.project.wizard.modal.plugin.install" description="Enables modal lanungage plugins installing"
+                 defaultValue="false"/>
   </extensions>
 
   <extensions defaultExtensionNs="org.jetbrains">