From fa5c7f3eb3f85c69a7cfc6fa8503ff740a0f48f9 Mon Sep 17 00:00:00 2001
From: nightwing <amirjanyan@gmail.com>
Date: Fri, 28 Jan 2011 21:36:59 +0800
Subject: [PATCH] don't copy empty strings

---
 lib/ace/keyboard/textinput.js | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/lib/ace/keyboard/textinput.js b/lib/ace/keyboard/textinput.js
index dded6dc0..f4ecac17 100644
--- a/lib/ace/keyboard/textinput.js
+++ b/lib/ace/keyboard/textinput.js
@@ -101,18 +101,25 @@ var TextInput = function(parentNode, host) {
         }, 0);
     };
 
-    var onCopy = function() {
+    var onCopy = function(e) {
         copied = true;
-        text.value = host.getCopyText();
+        var copyText = host.getCopyText();
+        if(copyText)
+            text.value = copyText;
+        else
+            e.preventDefault();
         text.select();
-        copied = true;
         setTimeout(sendText, 0);
     };
 
-    var onCut = function() {
+    var onCut = function(e) {
         copied = true;
-        text.value = host.getCopyText();
-        host.onCut();
+        var copyText = host.getCopyText();
+        if(copyText) {
+            text.value = copyText;
+            host.onCut();
+        } else
+            e.preventDefault();
         text.select();
         setTimeout(sendText, 0);
     };