From b2f8bbbb4aada72a6d4ec7a810a8c4ea9ee4ad21 Mon Sep 17 00:00:00 2001
From: Anna Kozlova <anna.kozlova@jetbrains.com>
Date: Mon, 23 Jan 2017 17:35:56 +0300
Subject: [PATCH] expand usages: check for disposed (IDEA-CR-17595)

---
 .../src/com/intellij/usages/impl/UsageViewManagerImpl.java  | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/platform/usageView/src/com/intellij/usages/impl/UsageViewManagerImpl.java b/platform/usageView/src/com/intellij/usages/impl/UsageViewManagerImpl.java
index 8a3ea46540bd..5d62dcfbd07c 100644
--- a/platform/usageView/src/com/intellij/usages/impl/UsageViewManagerImpl.java
+++ b/platform/usageView/src/com/intellij/usages/impl/UsageViewManagerImpl.java
@@ -81,7 +81,11 @@ public class UsageViewManagerImpl extends UsageViewManager {
     UsageView usageView = createUsageView(searchedFor, foundUsages, presentation, factory);
     addContent((UsageViewImpl)usageView, presentation);
     showToolWindow(true);
-    UIUtil.invokeLaterIfNeeded(((UsageViewImpl)usageView)::expandRoot);
+    UIUtil.invokeLaterIfNeeded(() -> {
+      if (!((UsageViewImpl)usageView).isDisposed()) {
+        ((UsageViewImpl)usageView).expandRoot();
+      }
+    });
     return usageView;
   }