IDEA-CR-11785 Allow getting file info from FileIndex for injected files

platform/lang-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightingSettingsPerFile.java

@@ -17,7 +17,6 @@
 package com.intellij.codeInsight.daemon.impl.analysis;
 
 import com.intellij.lang.Language;
-import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.components.*;
 import com.intellij.openapi.project.DumbService;
 import com.intellij.openapi.project.Project;
@@ -170,8 +169,6 @@ public class HighlightingSettingsPerFile extends HighlightingLevelManager implem
 
   @Override
   public boolean shouldInspect(@NotNull PsiElement psiRoot) {
-    if (ApplicationManager.getApplication().isUnitTestMode()) return true;
-
     final FileHighlightingSetting settingForRoot = getHighlightingSettingForRoot(psiRoot);
     if (settingForRoot == FileHighlightingSetting.SKIP_HIGHLIGHTING ||
         settingForRoot == FileHighlightingSetting.SKIP_INSPECTION) {

platform/lang-impl/src/com/intellij/injected/editor/VirtualFileWindowImpl.java

@@ -56,4 +56,9 @@ public class VirtualFileWindowImpl extends LightVirtualFile implements VirtualFi
   public String toString() {
     return "VirtualFileWindow in " + myDelegate.getPresentableUrl();
   }
+
+  @Override
+  public VirtualFile getParent() {
+    return myDelegate.getParent();
+  }
 }

platform/projectModel-impl/src/com/intellij/openapi/roots/impl/FileIndexBase.java

@@ -1,5 +1,6 @@
 package com.intellij.openapi.roots.impl;
 
+import com.intellij.injected.editor.VirtualFileWindow;
 import com.intellij.openapi.fileTypes.FileTypeRegistry;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.roots.FileIndex;
@@ -20,6 +21,9 @@ public abstract class FileIndexBase implements FileIndex {
 
   @NotNull
   protected DirectoryInfo getInfoForFileOrDirectory(@NotNull VirtualFile file) {
+    if (file instanceof VirtualFileWindow) {
+      file = ((VirtualFileWindow)file).getDelegate();
+    }
     return myDirectoryIndex.getInfoForFile(file);
   }