From 6bae750b10d0dff2f3a705143e1600e588618ed9 Mon Sep 17 00:00:00 2001
From: Rachel Fenichel <fenichel@google.com>
Date: Fri, 27 Jan 2017 10:41:40 -0800
Subject: [PATCH] Don't try to get block position in a headless workspace

---
 core/events.js | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/core/events.js b/core/events.js
index 12766f220..ddd5ca2ae 100644
--- a/core/events.js
+++ b/core/events.js
@@ -354,7 +354,12 @@ Blockly.Events.Create = function(block) {
     return;  // Blank event to be populated by fromJson.
   }
   Blockly.Events.Create.superClass_.constructor.call(this, block);
-  this.xml = Blockly.Xml.blockToDomWithXY(block);
+
+  if (block.workspace.rendered) {
+    this.xml = Blockly.Xml.blockToDomWithXY(block);
+  } else {
+    this.xml = Blockly.Xml.blockToDom(block);
+  }
   this.ids = Blockly.Events.getDescendantIds_(block);
 };
 goog.inherits(Blockly.Events.Create, Blockly.Events.Abstract);
@@ -423,7 +428,12 @@ Blockly.Events.Delete = function(block) {
     throw 'Connected blocks cannot be deleted.';
   }
   Blockly.Events.Delete.superClass_.constructor.call(this, block);
-  this.oldXml = Blockly.Xml.blockToDomWithXY(block);
+
+  if (block.workspace.rendered) {
+    this.oldXml = Blockly.Xml.blockToDomWithXY(block);
+  } else {
+    this.oldXml = Blockly.Xml.blockToDom(block);
+  }
   this.ids = Blockly.Events.getDescendantIds_(block);
 };
 goog.inherits(Blockly.Events.Delete, Blockly.Events.Abstract);