From 0d8497a73db036cf004cff7db1679e59829b91e5 Mon Sep 17 00:00:00 2001
From: Ekaterina Tuzova <Ekaterina.Tuzova@jetbrains.com>
Date: Wed, 26 Oct 2016 18:47:25 +0300
Subject: [PATCH] fixed ipython notebook undo

---
 .../ipnb/editor/actions/IpnbMoveCellDownAction.java   | 11 ++---------
 .../plugins/ipnb/editor/panels/IpnbFilePanel.java     |  2 +-
 2 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/python/ipnb/src/org/jetbrains/plugins/ipnb/editor/actions/IpnbMoveCellDownAction.java b/python/ipnb/src/org/jetbrains/plugins/ipnb/editor/actions/IpnbMoveCellDownAction.java
index d1e6ba932def..987c5daf09c9 100644
--- a/python/ipnb/src/org/jetbrains/plugins/ipnb/editor/actions/IpnbMoveCellDownAction.java
+++ b/python/ipnb/src/org/jetbrains/plugins/ipnb/editor/actions/IpnbMoveCellDownAction.java
@@ -19,15 +19,8 @@ public class IpnbMoveCellDownAction extends AnAction {
     final FileEditor editor = PlatformDataKeys.FILE_EDITOR.getData(context);
     if (editor instanceof IpnbFileEditor) {
       final IpnbFilePanel ipnbFilePanel = ((IpnbFileEditor)editor).getIpnbFilePanel();
-      CommandProcessor.getInstance().executeCommand(ipnbFilePanel.getProject(), new Runnable() {
-        public void run() {
-          ApplicationManager.getApplication().runWriteAction(new Runnable() {
-            public void run() {
-              ipnbFilePanel.moveCell(true);
-            }
-          });
-        }
-      }, "Ipnb.moveCell", new Object());
+      CommandProcessor.getInstance().executeCommand(ipnbFilePanel.getProject(), () -> ApplicationManager.getApplication().runWriteAction(
+        () -> ipnbFilePanel.moveCell(true)), "Ipnb.moveCell", new Object());
     }
   }
 }
diff --git a/python/ipnb/src/org/jetbrains/plugins/ipnb/editor/panels/IpnbFilePanel.java b/python/ipnb/src/org/jetbrains/plugins/ipnb/editor/panels/IpnbFilePanel.java
index 4c3f569f0d36..f4f2d7128d3c 100644
--- a/python/ipnb/src/org/jetbrains/plugins/ipnb/editor/panels/IpnbFilePanel.java
+++ b/python/ipnb/src/org/jetbrains/plugins/ipnb/editor/panels/IpnbFilePanel.java
@@ -79,6 +79,7 @@ public class IpnbFilePanel extends JPanel implements Scrollable, DataProvider, D
           alarm.cancelAllRequests();
           alarm.addRequest(new MySynchronizeRequest(), 10, ModalityState.stateForComponent(IpnbFilePanel.this));
         }
+        mySynchronize = true;
       }
     };
     myDocument = myParent.getDocument();
@@ -469,7 +470,6 @@ public class IpnbFilePanel extends JPanel implements Scrollable, DataProvider, D
   private class MySynchronizeRequest implements Runnable {
 
     public void run() {
-      mySynchronize = false;
       final Project project = getProject();
       if (project.isDisposed()) {
         return;