From fcc7e8190abd36f796eed5166d3d3e8b0ab0eaf0 Mon Sep 17 00:00:00 2001
From: Peter Gromov <peter@jetbrains.com>
Date: Mon, 14 Feb 2005 17:50:19 +0300
Subject: [PATCH] NPE fix

---
 .../find/findUsages/PsiElement2UsageTargetAdapter.java   | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/source/com/intellij/find/findUsages/PsiElement2UsageTargetAdapter.java b/source/com/intellij/find/findUsages/PsiElement2UsageTargetAdapter.java
index 9c903751b772..a4194b2ee772 100644
--- a/source/com/intellij/find/findUsages/PsiElement2UsageTargetAdapter.java
+++ b/source/com/intellij/find/findUsages/PsiElement2UsageTargetAdapter.java
@@ -9,6 +9,7 @@ import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.SmartPointerManager;
 import com.intellij.psi.SmartPsiElementPointer;
+import com.intellij.psi.PsiFile;
 import com.intellij.usageView.UsageViewUtil;
 import com.intellij.usages.UsageTarget;
 
@@ -110,7 +111,13 @@ public class PsiElement2UsageTargetAdapter implements UsageTarget {
   }
 
   public VirtualFile[] getFiles() {
-    return isValid() ? new VirtualFile[] {myPointer.getElement().getContainingFile().getVirtualFile()} : null;
+    if (!isValid()) return null;
+
+    final PsiFile psiFile = myPointer.getElement().getContainingFile();
+    if (psiFile == null) return null;
+
+    final VirtualFile virtualFile = psiFile.getVirtualFile();
+    return virtualFile == null ? null : new VirtualFile[]{virtualFile};
   }
 
   public static UsageTarget[] convert(PsiElement[] psiElements) {