From 2962cbd2dbba9af358cb44e9d0c97e3aecd0000a Mon Sep 17 00:00:00 2001
From: Dmitry Batrak <Dmitry.Batrak@jetbrains.com>
Date: Fri, 25 Mar 2016 15:08:00 +0300
Subject: [PATCH] don't generate invokeLater runnable on each document change
 event (IDEA-153495)

---
 .../fileEditor/impl/text/TextEditorComponent.java        | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/text/TextEditorComponent.java b/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/text/TextEditorComponent.java
index da2defd8fcea..0bb52db179e3 100644
--- a/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/text/TextEditorComponent.java
+++ b/platform/platform-impl/src/com/intellij/openapi/fileEditor/impl/text/TextEditorComponent.java
@@ -288,11 +288,13 @@ class TextEditorComponent extends JBLoadingPanel implements DataProvider {
      * We can reuse this runnable to decrease number of allocated object.
      */
     private final Runnable myUpdateRunnable;
+    private boolean myUpdateScheduled;
 
     public MyDocumentListener() {
       myUpdateRunnable = new Runnable() {
         @Override
         public void run() {
+          myUpdateScheduled = false;
           updateModifiedProperty();
         }
       };
@@ -300,8 +302,11 @@ class TextEditorComponent extends JBLoadingPanel implements DataProvider {
 
     @Override
     public void documentChanged(DocumentEvent e) {
-      // document's timestamp is changed later on undo or PSI changes
-      ApplicationManager.getApplication().invokeLater(myUpdateRunnable);
+      if (!myUpdateScheduled) {
+        // document's timestamp is changed later on undo or PSI changes
+        ApplicationManager.getApplication().invokeLater(myUpdateRunnable);
+        myUpdateScheduled = true;
+      }
     }
   }