From 2a3a304410ba7d9f18be5e6e69042bb804bcd4e3 Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Fri, 28 Aug 2015 12:41:58 -0600
Subject: [PATCH] Terminate drag when editor is destroyed

Fixes #4562
---
 src/text-editor-component.coffee | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/text-editor-component.coffee b/src/text-editor-component.coffee
index 7382cebcc..fce46f35c 100644
--- a/src/text-editor-component.coffee
+++ b/src/text-editor-component.coffee
@@ -542,7 +542,7 @@ class TextEditorComponent
       dragging = false
       window.removeEventListener('mousemove', onMouseMove)
       window.removeEventListener('mouseup', onMouseUp)
-      willInsertTextSubscription.dispose()
+      disposables.dispose()
 
     autoscroll = (mouseClientPosition) =>
       editorClientRect = @domNode.getBoundingClientRect()
@@ -577,7 +577,9 @@ class TextEditorComponent
 
     window.addEventListener('mousemove', onMouseMove)
     window.addEventListener('mouseup', onMouseUp)
-    willInsertTextSubscription = @editor.onWillInsertText(onMouseUp)
+    disposables = new CompositeDisposable
+    disposables.add(@editor.onWillInsertText(onMouseUp))
+    disposables.add(@editor.onDidDestroy(stopDragging))
 
   isVisible: ->
     @domNode.offsetHeight > 0 or @domNode.offsetWidth > 0