From 6aab284c25eeccd0c72964678ab3b0ba4c0a8e26 Mon Sep 17 00:00:00 2001
From: nik <Nikolay.Chashnikov@jetbrains.com>
Date: Wed, 7 Jun 2017 19:28:58 +0200
Subject: [PATCH] Project View: show special icon for content root of unloaded
 modules (IDEA-27471)

---
 .../intellij/psi/impl/JavaDirectoryIconProvider.java   |  3 +++
 .../ide/projectView/impl/ProjectRootsUtil.java         | 10 ++++++++++
 2 files changed, 13 insertions(+)

diff --git a/java/java-impl/src/com/intellij/psi/impl/JavaDirectoryIconProvider.java b/java/java-impl/src/com/intellij/psi/impl/JavaDirectoryIconProvider.java
index f6b3baa8b3a7..e3f5e0638ecf 100644
--- a/java/java-impl/src/com/intellij/psi/impl/JavaDirectoryIconProvider.java
+++ b/java/java-impl/src/com/intellij/psi/impl/JavaDirectoryIconProvider.java
@@ -59,6 +59,9 @@ public class JavaDirectoryIconProvider extends IconProvider implements DumbAware
         Module module = ProjectRootManager.getInstance(project).getFileIndex().getModuleForFile(vFile);
         symbolIcon = module != null ? ModuleType.get(module).getIcon() : PlatformIcons.CONTENT_ROOT_ICON_CLOSED;
       }
+      else if (ProjectRootsUtil.computeNameOfUnloadedModuleByContentRoot(vFile, project) != null) {
+        symbolIcon = AllIcons.Modules.UnloadedModule;
+      }
       else if ((sourceFolder = ProjectRootsUtil.getModuleSourceRoot(vFile, project)) != null) {
         symbolIcon = SourceRootPresentation.getSourceRootIcon(sourceFolder);
       }
diff --git a/platform/projectModel-impl/src/com/intellij/ide/projectView/impl/ProjectRootsUtil.java b/platform/projectModel-impl/src/com/intellij/ide/projectView/impl/ProjectRootsUtil.java
index 12ae255f1694..0eef44a2d908 100644
--- a/platform/projectModel-impl/src/com/intellij/ide/projectView/impl/ProjectRootsUtil.java
+++ b/platform/projectModel-impl/src/com/intellij/ide/projectView/impl/ProjectRootsUtil.java
@@ -18,6 +18,8 @@ package com.intellij.ide.projectView.impl;
 import com.intellij.openapi.module.Module;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.roots.*;
+import com.intellij.openapi.roots.impl.DirectoryIndex;
+import com.intellij.openapi.roots.impl.DirectoryInfo;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.PsiCodeFragment;
 import com.intellij.psi.PsiDirectory;
@@ -90,6 +92,14 @@ public class ProjectRootsUtil {
     return directoryFile.equals(contentRootForFile);
   }
 
+  public static String computeNameOfUnloadedModuleByContentRoot(@NotNull final VirtualFile root, @NotNull Project project) {
+    final DirectoryInfo info = DirectoryIndex.getInstance(project).getInfoForFile(root);
+    if (info.isExcluded(root) && root.equals(info.getContentRoot()) && info.getUnloadedModuleName() != null) {
+      return info.getUnloadedModuleName();
+    }
+    return null;
+  }
+
   public static boolean isProjectHome(@NotNull PsiDirectory psiDirectory) {
     return psiDirectory.getVirtualFile().equals(psiDirectory.getProject().getBaseDir());
   }