From 2b96d7a756fae9bddd2f2cc556fa74fd44531bb7 Mon Sep 17 00:00:00 2001
From: Neil Fraser <fraser@google.com>
Date: Wed, 16 Mar 2016 19:10:36 -0700
Subject: [PATCH] Don't select blocks if readOnly is changed.

---
 core/block_svg.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/block_svg.js b/core/block_svg.js
index 8b6c36ed9..d9d1d4e32 100644
--- a/core/block_svg.js
+++ b/core/block_svg.js
@@ -481,6 +481,9 @@ Blockly.BlockSvg.prototype.tab = function(start, forward) {
  * @private
  */
 Blockly.BlockSvg.prototype.onMouseDown_ = function(e) {
+  if (this.workspace.options.readOnly) {
+    return;
+  }
   if (this.isInFlyout) {
     e.stopPropagation();
     return;