From cfdef3af2cbbd4bf5c44af1b5cbc9618e28ad8a9 Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Fri, 4 Oct 2013 16:53:37 +0200
Subject: [PATCH] don't let rendering exceptions spoil completion state
 (EA-30289)

---
 .../codeInsight/lookup/impl/LookupCellRenderer.java  | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupCellRenderer.java b/platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupCellRenderer.java
index ccf7adbdddb4..35857091eb31 100644
--- a/platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupCellRenderer.java
+++ b/platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupCellRenderer.java
@@ -22,6 +22,7 @@ import com.intellij.codeInsight.lookup.LookupValueWithUIHint;
 import com.intellij.codeInsight.lookup.RealLookupElementPresentation;
 import com.intellij.openapi.application.AccessToken;
 import com.intellij.openapi.application.ReadAction;
+import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.editor.colors.EditorColorsScheme;
 import com.intellij.openapi.editor.colors.EditorFontType;
 import com.intellij.openapi.editor.ex.util.EditorUtil;
@@ -51,6 +52,7 @@ import java.util.Set;
  * @author Konstantin Bulenkov
  */
 public class LookupCellRenderer implements ListCellRenderer {
+  private static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.lookup.impl.LookupCellRenderer");
   //TODO[kb]: move all these awesome constants to Editor's Fonts & Colors settings
   private static final int AFTER_TAIL = 10;
   private static final int AFTER_TYPE = 6;
@@ -139,7 +141,15 @@ public class LookupCellRenderer implements ListCellRenderer {
     AccessToken token = ReadAction.start();
     try {
       if (item.isValid()) {
-        item.renderElement(presentation);
+        try {
+          item.renderElement(presentation);
+        }
+        catch (Exception e) {
+          LOG.error(e);
+        }
+        catch (Error e) {
+          LOG.error(e);
+        }
       } else {
         presentation.setItemTextForeground(JBColor.RED);
         presentation.setItemText("Invalid");