From 60eee9f1ec18aa14663e580e9fddcb39409c2a30 Mon Sep 17 00:00:00 2001
From: Anna Kozlova <anna.kozlova@jetbrains.com>
Date: Thu, 13 Jun 2013 18:36:07 +0400
Subject: [PATCH] scopes: do not create new panel on each selection

---
 .../intellij/ide/scopeView/ScopeViewPane.java    | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/platform/lang-impl/src/com/intellij/ide/scopeView/ScopeViewPane.java b/platform/lang-impl/src/com/intellij/ide/scopeView/ScopeViewPane.java
index c8401174733b..8d1ebb5bed3d 100644
--- a/platform/lang-impl/src/com/intellij/ide/scopeView/ScopeViewPane.java
+++ b/platform/lang-impl/src/com/intellij/ide/scopeView/ScopeViewPane.java
@@ -114,14 +114,16 @@ public class ScopeViewPane extends AbstractProjectViewPane {
 
   @Override
   public JComponent createComponent() {
-    myViewPanel = new ScopeTreeViewPanel(myProject);
-    Disposer.register(this, myViewPanel);
-    myViewPanel.initListeners();
-    myViewPanel.selectScope(NamedScopesHolder.getScope(myProject, getSubId()));
-    myTree = myViewPanel.getTree();
-    PopupHandler.installPopupHandler(myTree, IdeActions.GROUP_SCOPE_VIEW_POPUP, ActionPlaces.SCOPE_VIEW_POPUP);
-    enableDnD();
+    if (myViewPanel == null) {
+      myViewPanel = new ScopeTreeViewPanel(myProject);
+      Disposer.register(this, myViewPanel);
+      myViewPanel.initListeners();
+      myTree = myViewPanel.getTree();
+      PopupHandler.installPopupHandler(myTree, IdeActions.GROUP_SCOPE_VIEW_POPUP, ActionPlaces.SCOPE_VIEW_POPUP);
+      enableDnD();
+    }
 
+    myViewPanel.selectScope(NamedScopesHolder.getScope(myProject, getSubId()));
     return myViewPanel.getPanel();
   }