disable right click on Blockly workspace

sumorobot.js

@@ -172,7 +172,7 @@ window.onload = function() {
 
     /* change to python code */
     Blockly.Sumorobot['controls_if'] = function(block) {
-        // If/elseif/else condition.
+        // if/elseif/else condition.
         var n = 0;
         var argument = Blockly.Sumorobot.valueToCode(block, 'IF' + n,
             Blockly.Sumorobot.ORDER_NONE) || 'False';
@@ -222,7 +222,7 @@ window.onload = function() {
 
     /* change the if block to be more cheerful */
     Blockly.Blocks.logic.HUE = '#44CC00';
-    /* inject blockly */
+    /* inject Blockly */
     var blocklyArea = document.getElementById('blocklyArea');
     var blocklyDiv = document.getElementById('blocklyDiv');
     workspace = Blockly.inject(blocklyDiv, {
@@ -238,7 +238,7 @@ window.onload = function() {
         toolbox: document.getElementById('toolbox')
     });
 
-    /* on blockly resize */
+    /* on Blockly resize */
     var onresize = function(e) {
         // Compute the absolute coordinates and dimensions of blocklyArea.
         var element = blocklyArea;
@@ -280,11 +280,15 @@ window.onload = function() {
     /* resume the blocks */
     Blockly.Xml.domToWorkspace(xml, workspace);
 
-    /* on blockly code change */
+    /* disable right click on Blockly workspace */
+    Blockly.utils.isRightButton = function(e) {
+        return false;
+    };
+
+    /* on Blockly code change */
     function onCodeChanged(event) {
         /* if the if condition block was created */
         if (event.type == Blockly.Events.CREATE && event.xml.getAttributeNode("type").nodeValue == "controls_if") {
-
             /* remember the control_if block id */
             controlBlockId = event.blockId;
             /* automatically add the else statement input */
@@ -430,7 +434,7 @@ window.onload = function() {
         if (pythonEnabled) {
             /* send the code from the textarea to the SumoRobot */
             sumorobot.send("start:" + $("#blocklyCode").val());
-        /* otherwise when we are in blockly mode */
+        /* otherwise when we are in Blockly mode */
         } else {
             /* send the code from the blocks to the SumoRobot */
             sumorobot.send("start:" + sumocode);