diff --git a/blockly_compressed.js b/blockly_compressed.js
index bb3ffa92c..ca3644a9f 100644
--- a/blockly_compressed.js
+++ b/blockly_compressed.js
@@ -856,14 +856,15 @@ goog.ui.tree.TreeControl.prototype.createNode=function(a){return new goog.ui.tre
 // Copyright 2013 Google Inc.  Apache License 2.0
 var Blockly={Blocks:{}};
 // Copyright 2012 Google Inc.  Apache License 2.0
-Blockly.Workspace=function(a){this.id=Blockly.genUid();Blockly.Workspace.WorkspaceDB_[this.id]=this;this.options=a||{};this.RTL=!!this.options.RTL;this.topBlocks_=[];this.listeners_=[];this.undoStack_=[];this.redoStack_=[]};Blockly.Workspace.prototype.rendered=!1;Blockly.Workspace.prototype.MAX_UNDO=1024;Blockly.Workspace.prototype.dispose=function(){this.listeners_.length=0;this.clear();delete Blockly.Workspace.WorkspaceDB_[this.id]};Blockly.Workspace.SCAN_ANGLE=3;
-Blockly.Workspace.prototype.addTopBlock=function(a){this.topBlocks_.push(a)};Blockly.Workspace.prototype.removeTopBlock=function(a){for(var b=!1,c,d=0;c=this.topBlocks_[d];d++)if(c==a){this.topBlocks_.splice(d,1);b=!0;break}if(!b)throw"Block not present in workspace's list of top-most blocks.";};
+Blockly.Workspace=function(a){this.id=Blockly.genUid();Blockly.Workspace.WorkspaceDB_[this.id]=this;this.options=a||{};this.RTL=!!this.options.RTL;this.topBlocks_=[];this.listeners_=[];this.undoStack_=[];this.redoStack_=[];this.blockDB_=Object.create(null)};Blockly.Workspace.prototype.rendered=!1;Blockly.Workspace.prototype.MAX_UNDO=1024;Blockly.Workspace.prototype.dispose=function(){this.listeners_.length=0;this.clear();delete Blockly.Workspace.WorkspaceDB_[this.id]};
+Blockly.Workspace.SCAN_ANGLE=3;Blockly.Workspace.prototype.addTopBlock=function(a){this.topBlocks_.push(a)};Blockly.Workspace.prototype.removeTopBlock=function(a){for(var b=!1,c,d=0;c=this.topBlocks_[d];d++)if(c==a){this.topBlocks_.splice(d,1);b=!0;break}if(!b)throw"Block not present in workspace's list of top-most blocks.";};
 Blockly.Workspace.prototype.getTopBlocks=function(a){var b=[].concat(this.topBlocks_);if(a&&1<b.length){var c=Math.sin(goog.math.toRadians(Blockly.Workspace.SCAN_ANGLE));this.RTL&&(c*=-1);b.sort(function(a,b){var f=a.getRelativeToSurfaceXY(),g=b.getRelativeToSurfaceXY();return f.y+c*f.x-(g.y+c*g.x)})}return b};Blockly.Workspace.prototype.getAllBlocks=function(){for(var a=this.getTopBlocks(!1),b=0;b<a.length;b++)a.push.apply(a,a[b].getChildren());return a};
 Blockly.Workspace.prototype.clear=function(){var a=Blockly.Events.getGroup();for(a||Blockly.Events.setGroup(!0);this.topBlocks_.length;)this.topBlocks_[0].dispose();a||Blockly.Events.setGroup(!1)};Blockly.Workspace.prototype.getWidth=function(){return 0};Blockly.Workspace.prototype.newBlock=function(a,b){return new Blockly.Block(this,a,b)};Blockly.Workspace.prototype.getBlockById=function(a){for(var b=this.getAllBlocks(),c=0,d;d=b[c];c++)if(d.id==a)return d;return null};
 Blockly.Workspace.prototype.remainingCapacity=function(){return isNaN(this.options.maxBlocks)?Infinity:this.options.maxBlocks-this.getAllBlocks().length};
 Blockly.Workspace.prototype.undo=function(a){var b=a?this.redoStack_:this.undoStack_,c=a?this.undoStack_:this.redoStack_,d=b.pop();if(d){for(var e=[d];b.length&&d.group&&d.group==b[b.length-1].group;)e.push(b.pop());for(b=0;d=e[b];b++)c.push(d);e=Blockly.Events.filter(e,a);Blockly.Events.recordUndo=!1;for(b=0;d=e[b];b++)d.run(a);Blockly.Events.recordUndo=!0}};Blockly.Workspace.prototype.clearUndo=function(){this.undoStack_.length=0;this.redoStack_.length=0;Blockly.Events.clearPendingUndo()};
-Blockly.Workspace.prototype.addChangeListener=function(a){this.listeners_.push(a);return a};Blockly.Workspace.prototype.removeChangeListener=function(a){a=this.listeners_.indexOf(a);-1!=a&&this.listeners_.splice(a,1)};Blockly.Workspace.prototype.fireChangeListener=function(a){a.recordUndo&&(this.undoStack_.push(a),this.redoStack_.length=0,this.undoStack_.length>this.MAX_UNDO&&this.undoStack_.unshift());for(var b=0,c;c=this.listeners_[b];b++)c(a)};Blockly.Workspace.WorkspaceDB_=Object.create(null);
-Blockly.Workspace.getById=function(a){return Blockly.Workspace.WorkspaceDB_[a]||null};Blockly.Workspace.prototype.clear=Blockly.Workspace.prototype.clear;Blockly.Workspace.prototype.clearUndo=Blockly.Workspace.prototype.clearUndo;Blockly.Workspace.prototype.addChangeListener=Blockly.Workspace.prototype.addChangeListener;Blockly.Workspace.prototype.removeChangeListener=Blockly.Workspace.prototype.removeChangeListener;Blockly.Bubble=function(a,b,c,d,e,f,g){this.workspace_=a;this.content_=b;this.shape_=c;c=Blockly.Bubble.ARROW_ANGLE;this.workspace_.RTL&&(c=-c);this.arrow_radians_=goog.math.toRadians(c);a.getBubbleCanvas().appendChild(this.createDom_(b,!(!f||!g)));this.setAnchorLocation(d,e);f&&g||(b=this.content_.getBBox(),f=b.width+2*Blockly.Bubble.BORDER_WIDTH,g=b.height+2*Blockly.Bubble.BORDER_WIDTH);this.setBubbleSize(f,g);this.positionBubble_();this.renderArrow_();this.rendered_=!0;a.options.readOnly||(Blockly.bindEvent_(this.bubbleBack_,
+Blockly.Workspace.prototype.addChangeListener=function(a){this.listeners_.push(a);return a};Blockly.Workspace.prototype.removeChangeListener=function(a){a=this.listeners_.indexOf(a);-1!=a&&this.listeners_.splice(a,1)};Blockly.Workspace.prototype.fireChangeListener=function(a){a.recordUndo&&(this.undoStack_.push(a),this.redoStack_.length=0,this.undoStack_.length>this.MAX_UNDO&&this.undoStack_.unshift());for(var b=0,c;c=this.listeners_[b];b++)c(a)};
+Blockly.Workspace.prototype.getBlockById=function(a){return this.blockDB_[a]||null};Blockly.Workspace.WorkspaceDB_=Object.create(null);Blockly.Workspace.getById=function(a){return Blockly.Workspace.WorkspaceDB_[a]||null};Blockly.Workspace.prototype.clear=Blockly.Workspace.prototype.clear;Blockly.Workspace.prototype.clearUndo=Blockly.Workspace.prototype.clearUndo;Blockly.Workspace.prototype.addChangeListener=Blockly.Workspace.prototype.addChangeListener;
+Blockly.Workspace.prototype.removeChangeListener=Blockly.Workspace.prototype.removeChangeListener;Blockly.Bubble=function(a,b,c,d,e,f,g){this.workspace_=a;this.content_=b;this.shape_=c;c=Blockly.Bubble.ARROW_ANGLE;this.workspace_.RTL&&(c=-c);this.arrow_radians_=goog.math.toRadians(c);a.getBubbleCanvas().appendChild(this.createDom_(b,!(!f||!g)));this.setAnchorLocation(d,e);f&&g||(b=this.content_.getBBox(),f=b.width+2*Blockly.Bubble.BORDER_WIDTH,g=b.height+2*Blockly.Bubble.BORDER_WIDTH);this.setBubbleSize(f,g);this.positionBubble_();this.renderArrow_();this.rendered_=!0;a.options.readOnly||(Blockly.bindEvent_(this.bubbleBack_,
 "mousedown",this,this.bubbleMouseDown_),this.resizeGroup_&&Blockly.bindEvent_(this.resizeGroup_,"mousedown",this,this.resizeMouseDown_))};Blockly.Bubble.BORDER_WIDTH=6;Blockly.Bubble.ARROW_THICKNESS=10;Blockly.Bubble.ARROW_ANGLE=20;Blockly.Bubble.ARROW_BEND=4;Blockly.Bubble.ANCHOR_RADIUS=8;Blockly.Bubble.onMouseUpWrapper_=null;Blockly.Bubble.onMouseMoveWrapper_=null;
 Blockly.Bubble.unbindDragEvents_=function(){Blockly.Bubble.onMouseUpWrapper_&&(Blockly.unbindEvent_(Blockly.Bubble.onMouseUpWrapper_),Blockly.Bubble.onMouseUpWrapper_=null);Blockly.Bubble.onMouseMoveWrapper_&&(Blockly.unbindEvent_(Blockly.Bubble.onMouseMoveWrapper_),Blockly.Bubble.onMouseMoveWrapper_=null)};Blockly.Bubble.prototype.rendered_=!1;Blockly.Bubble.prototype.anchorX_=0;Blockly.Bubble.prototype.anchorY_=0;Blockly.Bubble.prototype.relativeLeft_=0;Blockly.Bubble.prototype.relativeTop_=0;
 Blockly.Bubble.prototype.width_=0;Blockly.Bubble.prototype.height_=0;Blockly.Bubble.prototype.autoLayout_=!0;
@@ -912,7 +913,7 @@ Blockly.Connection.prototype.isConnectionAllowed=function(a,b){if(this.distanceF
 !this.sourceBlock_.nextConnection)return!1;var c=a.getSourceBlock(),d=this.sourceBlock_;if(c&&d){do{if(d==c)return!1;c=c.getParent()}while(c)}return!0};Blockly.Connection.prototype.connect=function(a){this.targetConnection!=a&&(this.checkConnection_(a),this.isSuperior()?Blockly.Connection.connect_(this,a):Blockly.Connection.connect_(a,this))};Blockly.Connection.connectReciprocally_=function(a,b){goog.asserts.assert(a&&b,"Cannot connect null connections.");a.targetConnection=b;b.targetConnection=a};
 Blockly.Connection.singleConnection_=function(a,b){for(var c=!1,d=0;d<a.inputList.length;d++){var e=a.inputList[d].connection;if(e&&e.type==Blockly.INPUT_VALUE&&b.outputConnection.checkType_(e)){if(c)return null;c=e}}return c};Blockly.Connection.lastConnectionInRow_=function(a,b){for(var c=a,d;d=Blockly.Connection.singleConnection_(c,b);)if(c=d.targetBlock(),!c||c.isShadow())return d;return null};
 Blockly.Connection.prototype.disconnect=function(){var a=this.targetConnection;goog.asserts.assert(a,"Source connection not connected.");goog.asserts.assert(a.targetConnection==this,"Target connection not connected to source connection.");var b,c,d;this.isSuperior()?(b=this.sourceBlock_,c=a.getSourceBlock(),d=this):(b=a.getSourceBlock(),c=this.sourceBlock_,d=a);var e;Blockly.Events.isEnabled()&&(e=new Blockly.Events.Move(c));this.targetConnection=a.targetConnection=null;c.setParent(null);e&&(e.recordNew(),
-Blockly.Events.fire(e));a=d.getShadowDom();if(b.workspace&&a&&Blockly.Events.recordUndo){a=Blockly.Xml.domToBlock(b.workspace,a);if(a.outputConnection)d.connect(a.outputConnection);else if(a.previousConnection)d.connect(a.previousConnection);else throw"Child block does not have output or previous statement.";a.initSvg();a.render(!1)}b.rendered&&b.render();c.rendered&&(c.updateDisabled(),c.render())};
+Blockly.Events.fire(e));a=d.getShadowDom();if(b.workspace&&a&&Blockly.Events.recordUndo){a=Blockly.Xml.domToBlock(a,b.workspace);if(a.outputConnection)d.connect(a.outputConnection);else if(a.previousConnection)d.connect(a.previousConnection);else throw"Child block does not have output or previous statement.";a.initSvg();a.render(!1)}b.rendered&&b.render();c.rendered&&(c.updateDisabled(),c.render())};
 Blockly.Connection.prototype.targetBlock=function(){return this.isConnected()?this.targetConnection.getSourceBlock():null};
 Blockly.Connection.prototype.bumpAwayFrom_=function(a){if(Blockly.dragMode_==Blockly.DRAG_NONE){var b=this.sourceBlock_.getRootBlock();if(!b.isInFlyout){var c=!1;if(!b.isMovable()){b=a.getSourceBlock().getRootBlock();if(!b.isMovable())return;a=this;c=!0}b.getSvgRoot().parentNode.appendChild(b.getSvgRoot());var d=a.x_+Blockly.SNAP_RADIUS-this.x_;a=a.y_+Blockly.SNAP_RADIUS-this.y_;c&&(a=-a);b.RTL&&(d=-d);b.moveBy(d,a)}}};
 Blockly.Connection.prototype.moveTo=function(a,b){this.inDB_&&this.db_.removeConnection_(this);this.x_=a;this.y_=b;this.hidden_||this.db_.addConnection(this)};Blockly.Connection.prototype.moveBy=function(a,b){this.moveTo(this.x_+a,this.y_+b)};
@@ -923,7 +924,8 @@ Blockly.Connection.prototype.hideAll=function(){this.setHidden(!0);if(this.isCon
 Blockly.Connection.prototype.unhideAll=function(){this.setHidden(!1);var a=[];if(this.type!=Blockly.INPUT_VALUE&&this.type!=Blockly.NEXT_STATEMENT)return a;var b=this.targetBlock();if(b){var c;b.isCollapsed()?(c=[],b.outputConnection&&c.push(b.outputConnection),b.nextConnection&&c.push(b.nextConnection),b.previousConnection&&c.push(b.previousConnection)):c=b.getConnections_(!0);for(var d=0;d<c.length;d++)a.push.apply(a,c[d].unhideAll());a.length||(a[0]=b)}return a};
 Blockly.Connection.prototype.highlight=function(){var a;a=this.type==Blockly.INPUT_VALUE||this.type==Blockly.OUTPUT_VALUE?"m 0,0 "+Blockly.BlockSvg.TAB_PATH_DOWN+" v 5":"m -20,0 h 5 "+Blockly.BlockSvg.NOTCH_PATH_LEFT+" h 5";var b=this.sourceBlock_.getRelativeToSurfaceXY();Blockly.Connection.highlightedPath_=Blockly.createSvgElement("path",{"class":"blocklyHighlightedConnectionPath",d:a,transform:"translate("+(this.x_-b.x)+","+(this.y_-b.y)+")"+(this.sourceBlock_.RTL?" scale(-1 1)":"")},this.sourceBlock_.getSvgRoot())};
 Blockly.Connection.prototype.unhighlight=function(){goog.dom.removeNode(Blockly.Connection.highlightedPath_);delete Blockly.Connection.highlightedPath_};Blockly.Field=function(a,b){this.size_=new goog.math.Size(0,25);this.setValue(a);this.setValidator(b)};Blockly.Field.cacheWidths_=null;Blockly.Field.cacheReference_=0;Blockly.Field.prototype.name=void 0;Blockly.Field.prototype.maxDisplayLength=50;Blockly.Field.prototype.text_="";Blockly.Field.prototype.sourceBlock_=null;Blockly.Field.prototype.visible_=!0;Blockly.Field.prototype.validator_=null;Blockly.Field.NBSP="\u00a0";Blockly.Field.prototype.EDITABLE=!0;
-Blockly.Field.prototype.init=function(a){this.sourceBlock_||(this.sourceBlock_=a,this.fieldGroup_=Blockly.createSvgElement("g",{},null),this.visible_||(this.fieldGroup_.style.display="none"),this.borderRect_=Blockly.createSvgElement("rect",{rx:4,ry:4,x:-Blockly.BlockSvg.SEP_SPACE_X/2,y:0,height:16},this.fieldGroup_,this.sourceBlock_.workspace),this.textElement_=Blockly.createSvgElement("text",{"class":"blocklyText",y:this.size_.height-12.5},this.fieldGroup_),this.updateEditable(),a.getSvgRoot().appendChild(this.fieldGroup_),
+Blockly.Field.prototype.setSourceBlock=function(a){goog.asserts.assert(!this.sourceBlock_,"Field already bound to a block.");this.sourceBlock_=a};
+Blockly.Field.prototype.init=function(){this.fieldGroup_||(this.fieldGroup_=Blockly.createSvgElement("g",{},null),this.visible_||(this.fieldGroup_.style.display="none"),this.borderRect_=Blockly.createSvgElement("rect",{rx:4,ry:4,x:-Blockly.BlockSvg.SEP_SPACE_X/2,y:0,height:16},this.fieldGroup_,this.sourceBlock_.workspace),this.textElement_=Blockly.createSvgElement("text",{"class":"blocklyText",y:this.size_.height-12.5},this.fieldGroup_),this.updateEditable(),this.sourceBlock_.getSvgRoot().appendChild(this.fieldGroup_),
 this.mouseUpWrapper_=Blockly.bindEvent_(this.fieldGroup_,"mouseup",this,this.onMouseUp_),this.updateTextNode_(),Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Change(this.sourceBlock_,"field",this.name,"",this.getValue())))};
 Blockly.Field.prototype.dispose=function(){this.mouseUpWrapper_&&(Blockly.unbindEvent_(this.mouseUpWrapper_),this.mouseUpWrapper_=null);this.sourceBlock_=null;goog.dom.removeNode(this.fieldGroup_);this.validator_=this.borderRect_=this.textElement_=this.fieldGroup_=null};
 Blockly.Field.prototype.updateEditable=function(){this.EDITABLE&&this.sourceBlock_&&(this.sourceBlock_.isEditable()?(Blockly.addClass_(this.fieldGroup_,"blocklyEditableText"),Blockly.removeClass_(this.fieldGroup_,"blocklyNoNEditableText"),this.fieldGroup_.style.cursor=this.CURSOR):(Blockly.addClass_(this.fieldGroup_,"blocklyNonEditableText"),Blockly.removeClass_(this.fieldGroup_,"blocklyEditableText"),this.fieldGroup_.style.cursor=""))};Blockly.Field.prototype.isVisible=function(){return this.visible_};
@@ -944,9 +946,9 @@ a?"rtl":"ltr";Blockly.Tooltip.DIV.style.display="block";Blockly.Tooltip.visible=
 Blockly.Tooltip.wrap_=function(a,b){if(a.length<=b)return a;for(var c=a.trim().split(/\s+/),d=0;d<c.length;d++)c[d].length>b&&(b=c[d].length);var e,d=-Infinity,f,g=1;do{e=d;f=a;for(var h=[],k=c.length/g,l=1,d=0;d<c.length-1;d++)l<(d+1.5)/k?(l++,h[d]=!0):h[d]=!1;h=Blockly.Tooltip.wrapMutate_(c,h,b);d=Blockly.Tooltip.wrapScore_(c,h,b);a=Blockly.Tooltip.wrapToText_(c,h);g++}while(d>e);return f};
 Blockly.Tooltip.wrapScore_=function(a,b,c){for(var d=[0],e=[],f=0;f<a.length;f++)d[d.length-1]+=a[f].length,!0===b[f]?(d.push(0),e.push(a[f].charAt(a[f].length-1))):!1===b[f]&&d[d.length-1]++;a=Math.max.apply(Math,d);for(f=b=0;f<d.length;f++)b-=2*Math.pow(Math.abs(c-d[f]),1.5),b-=Math.pow(a-d[f],1.5),-1!=".?!".indexOf(e[f])?b+=c/3:-1!=",;)]}".indexOf(e[f])&&(b+=c/4);1<d.length&&d[d.length-1]<=d[d.length-2]&&(b+=.5);return b};
 Blockly.Tooltip.wrapMutate_=function(a,b,c){for(var d=Blockly.Tooltip.wrapScore_(a,b,c),e,f=0;f<b.length-1;f++)if(b[f]!=b[f+1]){var g=[].concat(b);g[f]=!g[f];g[f+1]=!g[f+1];var h=Blockly.Tooltip.wrapScore_(a,g,c);h>d&&(d=h,e=g)}return e?Blockly.Tooltip.wrapMutate_(a,e,c):b};Blockly.Tooltip.wrapToText_=function(a,b){for(var c=[],d=0;d<a.length;d++)c.push(a[d]),void 0!==b[d]&&c.push(b[d]?"\n":" ");return c.join("")};Blockly.FieldLabel=function(a,b){this.size_=new goog.math.Size(0,17.5);this.class_=b;this.setValue(a)};goog.inherits(Blockly.FieldLabel,Blockly.Field);Blockly.FieldLabel.prototype.EDITABLE=!1;
-Blockly.FieldLabel.prototype.init=function(a){this.sourceBlock_||(this.sourceBlock_=a,this.textElement_=Blockly.createSvgElement("text",{"class":"blocklyText",y:this.size_.height-5},null),this.class_&&Blockly.addClass_(this.textElement_,this.class_),this.visible_||(this.textElement_.style.display="none"),a.getSvgRoot().appendChild(this.textElement_),this.textElement_.tooltip=this.sourceBlock_,Blockly.Tooltip.bindMouseEvents(this.textElement_),this.updateTextNode_())};
+Blockly.FieldLabel.prototype.init=function(){this.textElement_||(this.textElement_=Blockly.createSvgElement("text",{"class":"blocklyText",y:this.size_.height-5},null),this.class_&&Blockly.addClass_(this.textElement_,this.class_),this.visible_||(this.textElement_.style.display="none"),this.sourceBlock_.getSvgRoot().appendChild(this.textElement_),this.textElement_.tooltip=this.sourceBlock_,Blockly.Tooltip.bindMouseEvents(this.textElement_),this.updateTextNode_())};
 Blockly.FieldLabel.prototype.dispose=function(){goog.dom.removeNode(this.textElement_);this.textElement_=null};Blockly.FieldLabel.prototype.getSvgRoot=function(){return this.textElement_};Blockly.FieldLabel.prototype.setTooltip=function(a){this.textElement_.tooltip=a};Blockly.Input=function(a,b,c,d){this.type=a;this.name=b;this.sourceBlock_=c;this.connection=d;this.fieldRow=[]};Blockly.Input.prototype.align=Blockly.ALIGN_LEFT;Blockly.Input.prototype.visible_=!0;
-Blockly.Input.prototype.appendField=function(a,b){if(!a&&!b)return this;goog.isString(a)&&(a=new Blockly.FieldLabel(a));this.sourceBlock_.rendered&&a.init(this.sourceBlock_);a.name=b;a.prefixField&&this.appendField(a.prefixField);this.fieldRow.push(a);a.suffixField&&this.appendField(a.suffixField);this.sourceBlock_.rendered&&(this.sourceBlock_.render(),this.sourceBlock_.bumpNeighbours_());return this};
+Blockly.Input.prototype.appendField=function(a,b){if(!a&&!b)return this;goog.isString(a)&&(a=new Blockly.FieldLabel(a));a.setSourceBlock(this.sourceBlock_);this.sourceBlock_.rendered&&a.init();a.name=b;a.prefixField&&this.appendField(a.prefixField);this.fieldRow.push(a);a.suffixField&&this.appendField(a.suffixField);this.sourceBlock_.rendered&&(this.sourceBlock_.render(),this.sourceBlock_.bumpNeighbours_());return this};
 Blockly.Input.prototype.appendTitle=function(a,b){console.warn("Deprecated call to appendTitle, use appendField instead.");return this.appendField(a,b)};Blockly.Input.prototype.removeField=function(a){for(var b=0,c;c=this.fieldRow[b];b++)if(c.name===a){c.dispose();this.fieldRow.splice(b,1);this.sourceBlock_.rendered&&(this.sourceBlock_.render(),this.sourceBlock_.bumpNeighbours_());return}goog.asserts.fail('Field "%s" not found.',a)};Blockly.Input.prototype.isVisible=function(){return this.visible_};
 Blockly.Input.prototype.setVisible=function(a){var b=[];if(this.visible_==a)return b;for(var c=(this.visible_=a)?"block":"none",d=0,e;e=this.fieldRow[d];d++)e.setVisible(a);this.connection&&(a?b=this.connection.unhideAll():this.connection.hideAll(),d=this.connection.targetBlock())&&(d.getSvgRoot().style.display=c,a||(d.rendered=!1));return b};Blockly.Input.prototype.setCheck=function(a){if(!this.connection)throw"This input does not have a connection.";this.connection.setCheck(a);return this};
 Blockly.Input.prototype.setAlign=function(a){this.align=a;this.sourceBlock_.rendered&&this.sourceBlock_.render();return this};Blockly.Input.prototype.init=function(){if(this.sourceBlock_.workspace.rendered)for(var a=0;a<this.fieldRow.length;a++)this.fieldRow[a].init(this.sourceBlock_)};Blockly.Input.prototype.dispose=function(){for(var a=0,b;b=this.fieldRow[a];a++)b.dispose();this.connection&&this.connection.dispose();this.sourceBlock_=null};Blockly.ConnectionDB=function(){};Blockly.ConnectionDB.prototype=[];Blockly.ConnectionDB.constructor=Blockly.ConnectionDB;Blockly.ConnectionDB.prototype.addConnection=function(a){if(a.inDB_)throw"Connection already in database.";if(!a.getSourceBlock().isInFlyout){var b=this.findPositionForConnection_(a);this.splice(b,0,a);a.inDB_=!0}};
@@ -954,7 +956,12 @@ Blockly.ConnectionDB.prototype.findConnection=function(a){if(!this.length)return
 Blockly.ConnectionDB.prototype.findPositionForConnection_=function(a){if(!this.length)return 0;for(var b=0,c=this.length;b<c;){var d=Math.floor((b+c)/2);if(this[d].y_<a.y_)b=d+1;else if(this[d].y_>a.y_)c=d;else{b=d;break}}return b};Blockly.ConnectionDB.prototype.removeConnection_=function(a){if(!a.inDB_)throw"Connection not in database.";var b=this.findConnection(a);if(-1==b)throw"Unable to find connection in connectionDB.";a.inDB_=!1;this.splice(b,1)};
 Blockly.ConnectionDB.prototype.getNeighbours=function(a,b){function c(a){var c=e-d[a].x_,g=f-d[a].y_;Math.sqrt(c*c+g*g)<=b&&l.push(d[a]);return g<b}for(var d=this,e=a.x_,f=a.y_,g=0,h=d.length-2,k=h;g<k;)d[k].y_<f?g=k:h=k,k=Math.floor((g+h)/2);var h=g=k,l=[];a.getSourceBlock();if(d.length){for(;0<=g&&c(g);)g--;do h++;while(h<d.length&&c(h))}return l};Blockly.ConnectionDB.prototype.isInYRange_=function(a,b,c){return Math.abs(this[a].y_-b)<=c};
 Blockly.ConnectionDB.prototype.searchForClosest=function(a,b,c,d){if(!this.length)return{connection:null,radius:b};var e=a.y_,f=a.x_;a.x_=f+c;a.y_=e+d;var g=this.findPositionForConnection_(a);c=null;d=b;for(var h,k=g-1;0<=k&&this.isInYRange_(k,a.y_,b);)h=this[k],a.isConnectionAllowed(h,d)&&(c=h,d=h.distanceFrom(a)),k--;for(;g<this.length&&this.isInYRange_(g,a.y_,b);)h=this[g],a.isConnectionAllowed(h,d)&&(c=h,d=h.distanceFrom(a)),g++;a.x_=f;a.y_=e;return{connection:c,radius:d}};
-Blockly.ConnectionDB.init=function(a){var b=[];b[Blockly.INPUT_VALUE]=new Blockly.ConnectionDB;b[Blockly.OUTPUT_VALUE]=new Blockly.ConnectionDB;b[Blockly.NEXT_STATEMENT]=new Blockly.ConnectionDB;b[Blockly.PREVIOUS_STATEMENT]=new Blockly.ConnectionDB;a.connectionDBList=b};Blockly.ScrollbarPair=function(a){this.workspace_=a;this.hScroll=new Blockly.Scrollbar(a,!0,!0);this.vScroll=new Blockly.Scrollbar(a,!1,!0);this.corner_=Blockly.createSvgElement("rect",{height:Blockly.Scrollbar.scrollbarThickness,width:Blockly.Scrollbar.scrollbarThickness,"class":"blocklyScrollbarBackground"},null);Blockly.Scrollbar.insertAfter_(this.corner_,a.getBubbleCanvas())};Blockly.ScrollbarPair.prototype.oldHostMetrics_=null;
+Blockly.ConnectionDB.init=function(a){var b=[];b[Blockly.INPUT_VALUE]=new Blockly.ConnectionDB;b[Blockly.OUTPUT_VALUE]=new Blockly.ConnectionDB;b[Blockly.NEXT_STATEMENT]=new Blockly.ConnectionDB;b[Blockly.PREVIOUS_STATEMENT]=new Blockly.ConnectionDB;a.connectionDBList=b};
+// Copyright 2016 Google Inc.  Apache License 2.0
+Blockly.Options=function(a){var b=!!a.readOnly;if(b)var c=null,d=!1,e=!1,f=!1,g=!1,h=!1,k=!1;else c=Blockly.Options.parseToolboxTree(a.toolbox),d=!(!c||!c.getElementsByTagName("category").length),e=a.trashcan,void 0===e&&(e=d),f=a.collapse,void 0===f&&(f=d),g=a.comments,void 0===g&&(g=d),h=a.disable,void 0===h&&(h=d),k=a.sounds,void 0===k&&(k=!0);var l=a.scrollbars;void 0===l&&(l=d);var q=a.css;void 0===q&&(q=!0);var m="https://blockly-demo.appspot.com/static/media/";a.media?m=a.media:a.path&&(m=
+a.path+"media/");this.RTL=!!a.rtl;this.collapse=f;this.comments=g;this.disable=h;this.readOnly=b;this.maxBlocks=a.maxBlocks||Infinity;this.pathToMedia=m;this.hasCategories=d;this.hasScrollbars=l;this.hasTrashcan=e;this.hasSounds=k;this.hasCss=q;this.languageTree=c;this.gridOptions=Blockly.Options.parseGridOptions_(a);this.zoomOptions=Blockly.Options.parseZoomOptions_(a)};Blockly.Options.prototype.parentWorkspace=null;Blockly.Options.prototype.setMetrics=function(a){};
+Blockly.Options.prototype.getMetrics=function(){return null};Blockly.Options.parseZoomOptions_=function(a){a=a.zoom||{};var b={};b.controls=void 0===a.controls?!1:!!a.controls;b.wheel=void 0===a.wheel?!1:!!a.wheel;b.startScale=void 0===a.startScale?1:parseFloat(a.startScale);b.maxScale=void 0===a.maxScale?3:parseFloat(a.maxScale);b.minScale=void 0===a.minScale?.3:parseFloat(a.minScale);b.scaleSpeed=void 0===a.scaleSpeed?1.2:parseFloat(a.scaleSpeed);return b};
+Blockly.Options.parseGridOptions_=function(a){a=a.grid||{};var b={};b.spacing=parseFloat(a.spacing)||0;b.colour=a.colour||"#888";b.length=parseFloat(a.length)||1;b.snap=0<b.spacing&&!!a.snap;return b};Blockly.Options.parseToolboxTree=function(a){a?("string"!=typeof a&&("undefined"==typeof XSLTProcessor&&a.outerHTML?a=a.outerHTML:a instanceof Element||(a=null)),"string"==typeof a&&(a=Blockly.Xml.textToDom(a))):a=null;return a};Blockly.ScrollbarPair=function(a){this.workspace_=a;this.hScroll=new Blockly.Scrollbar(a,!0,!0);this.vScroll=new Blockly.Scrollbar(a,!1,!0);this.corner_=Blockly.createSvgElement("rect",{height:Blockly.Scrollbar.scrollbarThickness,width:Blockly.Scrollbar.scrollbarThickness,"class":"blocklyScrollbarBackground"},null);Blockly.Scrollbar.insertAfter_(this.corner_,a.getBubbleCanvas())};Blockly.ScrollbarPair.prototype.oldHostMetrics_=null;
 Blockly.ScrollbarPair.prototype.dispose=function(){goog.dom.removeNode(this.corner_);this.oldHostMetrics_=this.workspace_=this.corner_=null;this.hScroll.dispose();this.hScroll=null;this.vScroll.dispose();this.vScroll=null};
 Blockly.ScrollbarPair.prototype.resize=function(){var a=this.workspace_.getMetrics();if(a){var b=!1,c=!1;this.oldHostMetrics_&&this.oldHostMetrics_.viewWidth==a.viewWidth&&this.oldHostMetrics_.viewHeight==a.viewHeight&&this.oldHostMetrics_.absoluteTop==a.absoluteTop&&this.oldHostMetrics_.absoluteLeft==a.absoluteLeft?(this.oldHostMetrics_&&this.oldHostMetrics_.contentWidth==a.contentWidth&&this.oldHostMetrics_.viewLeft==a.viewLeft&&this.oldHostMetrics_.contentLeft==a.contentLeft||(b=!0),this.oldHostMetrics_&&
 this.oldHostMetrics_.contentHeight==a.contentHeight&&this.oldHostMetrics_.viewTop==a.viewTop&&this.oldHostMetrics_.contentTop==a.contentTop||(c=!0)):c=b=!0;b&&this.hScroll.resize(a);c&&this.vScroll.resize(a);this.oldHostMetrics_&&this.oldHostMetrics_.viewWidth==a.viewWidth&&this.oldHostMetrics_.absoluteLeft==a.absoluteLeft||this.corner_.setAttribute("x",this.vScroll.xCoordinate);this.oldHostMetrics_&&this.oldHostMetrics_.viewHeight==a.viewHeight&&this.oldHostMetrics_.absoluteTop==a.absoluteTop||this.corner_.setAttribute("y",
@@ -992,13 +999,15 @@ if(c=a.getNextBlock())h=goog.dom.createDom("next",null,Blockly.Xml.blockToDom(c)
 Blockly.Xml.cloneShadow_=function(a){for(var b=a=a.cloneNode(!0),c;b;)if(b.firstChild)b=b.firstChild;else{for(;b&&!b.nextSibling;)c=b,b=b.parentNode,3==c.nodeType&&""==c.data.trim()&&b.firstChild!=c&&goog.dom.removeNode(c);b&&(c=b,b=b.nextSibling,3==c.nodeType&&""==c.data.trim()&&goog.dom.removeNode(c))}return a};Blockly.Xml.domToText=function(a){return(new XMLSerializer).serializeToString(a)};
 Blockly.Xml.domToPrettyText=function(a){a=Blockly.Xml.domToText(a).split("<");for(var b="",c=1;c<a.length;c++){var d=a[c];"/"==d[0]&&(b=b.substring(2));a[c]=b+"<"+d;"/"!=d[0]&&"/>"!=d.slice(-2)&&(b+="  ")}a=a.join("\n");a=a.replace(/(<(\w+)\b[^>]*>[^\n]*)\n *<\/\2>/g,"$1</$2>");return a.replace(/^\n/,"")};
 Blockly.Xml.textToDom=function(a){a=(new DOMParser).parseFromString(a,"text/xml");if(!a||!a.firstChild||"xml"!=a.firstChild.nodeName.toLowerCase()||a.firstChild!==a.lastChild)throw"Blockly.Xml.textToDom did not obtain a valid XML tree.";return a.firstChild};
-Blockly.Xml.domToWorkspace=function(a,b){var c;a.RTL&&(c=a.getWidth());Blockly.Field.startCache();var d=b.childNodes.length,e=Blockly.Events.getGroup();e||Blockly.Events.setGroup(!0);for(var f=0;f<d;f++){var g=b.childNodes[f],h=g.nodeName.toLowerCase();if("block"==h||"shadow"==h){var h=Blockly.Xml.domToBlock(a,g),k=parseInt(g.getAttribute("x"),10),g=parseInt(g.getAttribute("y"),10);isNaN(k)||isNaN(g)||h.moveBy(a.RTL?c-k:k,g)}}e||Blockly.Events.setGroup(!1);Blockly.Field.stopCache()};
-Blockly.Xml.domToBlock=function(a,b){Blockly.Events.disable();var c=Blockly.Xml.domToBlockHeadless_(a,b);if(a.rendered){c.setConnectionsHidden(!0);for(var d=c.getDescendants(),e=d.length-1;0<=e;e--)d[e].initSvg();for(e=d.length-1;0<=e;e--)d[e].render(!1);setTimeout(function(){c.workspace&&c.setConnectionsHidden(!1)},1);c.updateDisabled();Blockly.fireUiEvent(window,"resize")}Blockly.Events.enable();Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Create(c));return c};
-Blockly.Xml.domToBlockHeadless_=function(a,b){var c=null,d=b.getAttribute("type");if(!d)throw"Block type unspecified: \n"+b.outerHTML;for(var e=b.getAttribute("id"),c=a.newBlock(d,e),f=null,e=0,g;g=b.childNodes[e];e++)if(3!=g.nodeType){for(var h=f=null,k=0,l;l=g.childNodes[k];k++)1==l.nodeType&&("block"==l.nodeName.toLowerCase()?f=l:"shadow"==l.nodeName.toLowerCase()&&(h=l));!f&&h&&(f=h);k=g.getAttribute("name");switch(g.nodeName.toLowerCase()){case "mutation":c.domToMutation&&(c.domToMutation(g),
+Blockly.Xml.domToWorkspace=function(a,b){if(a instanceof Blockly.Workspace){var c=a;a=b;b=c;console.warn("Deprecated call to Blockly.Xml.domToWorkspace, swap the arguments.")}var d;b.RTL&&(d=b.getWidth());Blockly.Field.startCache();var c=a.childNodes.length,e=Blockly.Events.getGroup();e||Blockly.Events.setGroup(!0);for(var f=0;f<c;f++){var g=a.childNodes[f],h=g.nodeName.toLowerCase();if("block"==h||"shadow"==h){var h=Blockly.Xml.domToBlock(g,b),k=parseInt(g.getAttribute("x"),10),g=parseInt(g.getAttribute("y"),
+10);isNaN(k)||isNaN(g)||h.moveBy(b.RTL?d-k:k,g)}}e||Blockly.Events.setGroup(!1);Blockly.Field.stopCache()};
+Blockly.Xml.domToBlock=function(a,b){if(a instanceof Blockly.Workspace){var c=a;a=b;b=c;console.warn("Deprecated call to Blockly.Xml.domToBlock, swap the arguments.")}Blockly.Events.disable();var d=Blockly.Xml.domToBlockHeadless_(a,b);if(b.rendered){d.setConnectionsHidden(!0);for(var c=d.getDescendants(),e=c.length-1;0<=e;e--)c[e].initSvg();for(e=c.length-1;0<=e;e--)c[e].render(!1);setTimeout(function(){d.workspace&&d.setConnectionsHidden(!1)},1);d.updateDisabled();Blockly.fireUiEvent(window,"resize")}Blockly.Events.enable();
+Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Create(d));return d};
+Blockly.Xml.domToBlockHeadless_=function(a,b){var c=null,d=a.getAttribute("type");if(!d)throw"Block type unspecified: \n"+a.outerHTML;for(var e=a.getAttribute("id"),c=b.newBlock(d,e),f=null,e=0,g;g=a.childNodes[e];e++)if(3!=g.nodeType){for(var h=f=null,k=0,l;l=g.childNodes[k];k++)1==l.nodeType&&("block"==l.nodeName.toLowerCase()?f=l:"shadow"==l.nodeName.toLowerCase()&&(h=l));!f&&h&&(f=h);k=g.getAttribute("name");switch(g.nodeName.toLowerCase()){case "mutation":c.domToMutation&&(c.domToMutation(g),
 c.initSvg&&c.initSvg());break;case "comment":c.setCommentText(g.textContent);var q=g.getAttribute("pinned");q&&!c.isInFlyout&&setTimeout(function(){c.comment&&c.comment.setVisible&&c.comment.setVisible("true"==q)},1);f=parseInt(g.getAttribute("w"),10);g=parseInt(g.getAttribute("h"),10);!isNaN(f)&&!isNaN(g)&&c.comment&&c.comment.setVisible&&c.comment.setBubbleSize(f,g);break;case "data":c.data=g.textContent;break;case "title":case "field":f=c.getField(k);if(!f){console.warn("Ignoring non-existent field "+
-k+" in block "+d);break}f.setValue(g.textContent);break;case "value":case "statement":g=c.getInput(k);if(!g){console.warn("Ignoring non-existent input "+k+" in block "+d);break}h&&g.connection.setShadowDom(h);if(f)if(f=Blockly.Xml.domToBlockHeadless_(a,f),f.outputConnection)g.connection.connect(f.outputConnection);else if(f.previousConnection)g.connection.connect(f.previousConnection);else throw"Child block does not have output or previous statement.";break;case "next":h&&c.nextConnection&&c.nextConnection.setShadowDom(h);
-if(f){if(!c.nextConnection)throw"Next statement does not exist.";if(c.nextConnection.isConnected())throw"Next statement is already connected.";f=Blockly.Xml.domToBlockHeadless_(a,f);if(!f.previousConnection)throw"Next block does not have previous statement.";c.nextConnection.connect(f.previousConnection)}break;default:console.warn("Ignoring unknown tag: "+g.nodeName)}}(d=b.getAttribute("inline"))&&c.setInputsInline("true"==d);(d=b.getAttribute("disabled"))&&c.setDisabled("true"==d);(d=b.getAttribute("deletable"))&&
-c.setDeletable("true"==d);(d=b.getAttribute("movable"))&&c.setMovable("true"==d);(d=b.getAttribute("editable"))&&c.setEditable("true"==d);(d=b.getAttribute("collapsed"))&&c.setCollapsed("true"==d);"shadow"==b.nodeName.toLowerCase()&&c.setShadow(!0);c.validate&&c.validate();return c};Blockly.Xml.deleteNext=function(a){for(var b=0,c;c=a.childNodes[b];b++)if("next"==c.nodeName.toLowerCase()){a.removeChild(c);break}};goog.global.Blockly||(goog.global.Blockly={});
+k+" in block "+d);break}f.setValue(g.textContent);break;case "value":case "statement":g=c.getInput(k);if(!g){console.warn("Ignoring non-existent input "+k+" in block "+d);break}h&&g.connection.setShadowDom(h);if(f)if(f=Blockly.Xml.domToBlockHeadless_(f,b),f.outputConnection)g.connection.connect(f.outputConnection);else if(f.previousConnection)g.connection.connect(f.previousConnection);else throw"Child block does not have output or previous statement.";break;case "next":h&&c.nextConnection&&c.nextConnection.setShadowDom(h);
+if(f){if(!c.nextConnection)throw"Next statement does not exist.";if(c.nextConnection.isConnected())throw"Next statement is already connected.";f=Blockly.Xml.domToBlockHeadless_(f,b);if(!f.previousConnection)throw"Next block does not have previous statement.";c.nextConnection.connect(f.previousConnection)}break;default:console.warn("Ignoring unknown tag: "+g.nodeName)}}(d=a.getAttribute("inline"))&&c.setInputsInline("true"==d);(d=a.getAttribute("disabled"))&&c.setDisabled("true"==d);(d=a.getAttribute("deletable"))&&
+c.setDeletable("true"==d);(d=a.getAttribute("movable"))&&c.setMovable("true"==d);(d=a.getAttribute("editable"))&&c.setEditable("true"==d);(d=a.getAttribute("collapsed"))&&c.setCollapsed("true"==d);"shadow"==a.nodeName.toLowerCase()&&c.setShadow(!0);c.validate&&c.validate();return c};Blockly.Xml.deleteNext=function(a){for(var b=0,c;c=a.childNodes[b];b++)if("next"==c.nodeName.toLowerCase()){a.removeChild(c);break}};goog.global.Blockly||(goog.global.Blockly={});
 goog.global.Blockly.Xml||(goog.global.Blockly.Xml={});goog.global.Blockly.Xml.domToText=Blockly.Xml.domToText;goog.global.Blockly.Xml.domToWorkspace=Blockly.Xml.domToWorkspace;goog.global.Blockly.Xml.textToDom=Blockly.Xml.textToDom;goog.global.Blockly.Xml.workspaceToDom=Blockly.Xml.workspaceToDom;
 // Copyright 2015 Google Inc.  Apache License 2.0
 Blockly.ZoomControls=function(a){this.workspace_=a};Blockly.ZoomControls.prototype.WIDTH_=32;Blockly.ZoomControls.prototype.HEIGHT_=110;Blockly.ZoomControls.prototype.MARGIN_BOTTOM_=20;Blockly.ZoomControls.prototype.MARGIN_SIDE_=20;Blockly.ZoomControls.prototype.svgGroup_=null;Blockly.ZoomControls.prototype.left_=0;Blockly.ZoomControls.prototype.top_=0;
@@ -1020,8 +1029,8 @@ Blockly.WorkspaceSvg.prototype.resize=function(){this.toolbox_&&this.toolbox_.po
 Blockly.WorkspaceSvg.prototype.getParentSvg=function(){if(this.cachedParentSvg_)return this.cachedParentSvg_;for(var a=this.svgGroup_;a;){if("svg"==a.tagName)return this.cachedParentSvg_=a;a=a.parentNode}return null};Blockly.WorkspaceSvg.prototype.translate=function(a,b){var c="translate("+a+","+b+") scale("+this.scale+")";this.svgBlockCanvas_.setAttribute("transform",c);this.svgBubbleCanvas_.setAttribute("transform",c)};
 Blockly.WorkspaceSvg.prototype.getWidth=function(){var a=this.getMetrics();return a?a.viewWidth/this.scale:0};Blockly.WorkspaceSvg.prototype.setVisible=function(a){this.getParentSvg().style.display=a?"block":"none";this.toolbox_&&(this.toolbox_.HtmlDiv.style.display=a?"block":"none");a?(this.render(),this.toolbox_&&this.toolbox_.position()):Blockly.hideChaff(!0)};Blockly.WorkspaceSvg.prototype.render=function(){for(var a=this.getAllBlocks(),b=a.length-1;0<=b;b--)a[b].render(!1)};
 Blockly.WorkspaceSvg.prototype.traceOn=function(a){this.traceOn_=a;this.traceWrapper_&&(Blockly.unbindEvent_(this.traceWrapper_),this.traceWrapper_=null);a&&(this.traceWrapper_=Blockly.bindEvent_(this.svgBlockCanvas_,"blocklySelectChange",this,function(){this.traceOn_=!1}))};
-Blockly.WorkspaceSvg.prototype.highlightBlock=function(a){this.traceOn_&&Blockly.dragMode_!=Blockly.DRAG_NONE&&this.traceOn(!1);if(this.traceOn_){var b=null;if(a&&(b=Blockly.Block.getById(a),!b))return;this.traceOn(!1);b?b.select():Blockly.selected&&Blockly.selected.unselect();var c=this;setTimeout(function(){c.traceOn(!0)},1)}};
-Blockly.WorkspaceSvg.prototype.paste=function(a){if(this.rendered&&!(a.getElementsByTagName("block").length>=this.remainingCapacity())){Blockly.terminateDrag_();Blockly.Events.disable();var b=Blockly.Xml.domToBlock(this,a),c=parseInt(a.getAttribute("x"),10);a=parseInt(a.getAttribute("y"),10);if(!isNaN(c)&&!isNaN(a)){this.RTL&&(c=-c);do{for(var d=!1,e=this.getAllBlocks(),f=0,g;g=e[f];f++)if(g=g.getRelativeToSurfaceXY(),1>=Math.abs(c-g.x)&&1>=Math.abs(a-g.y)){d=!0;break}if(!d)for(e=b.getConnections_(!1),
+Blockly.WorkspaceSvg.prototype.highlightBlock=function(a){this.traceOn_&&Blockly.dragMode_!=Blockly.DRAG_NONE&&this.traceOn(!1);if(this.traceOn_){var b=null;if(a&&(b=this.getBlockById(a),!b))return;this.traceOn(!1);b?b.select():Blockly.selected&&Blockly.selected.unselect();var c=this;setTimeout(function(){c.traceOn(!0)},1)}};
+Blockly.WorkspaceSvg.prototype.paste=function(a){if(this.rendered&&!(a.getElementsByTagName("block").length>=this.remainingCapacity())){Blockly.terminateDrag_();Blockly.Events.disable();var b=Blockly.Xml.domToBlock(a,this),c=parseInt(a.getAttribute("x"),10);a=parseInt(a.getAttribute("y"),10);if(!isNaN(c)&&!isNaN(a)){this.RTL&&(c=-c);do{for(var d=!1,e=this.getAllBlocks(),f=0,g;g=e[f];f++)if(g=g.getRelativeToSurfaceXY(),1>=Math.abs(c-g.x)&&1>=Math.abs(a-g.y)){d=!0;break}if(!d)for(e=b.getConnections_(!1),
 f=0;g=e[f];f++)if(g.closest(Blockly.SNAP_RADIUS,c,a).connection){d=!0;break}d&&(c=this.RTL?c-Blockly.SNAP_RADIUS:c+Blockly.SNAP_RADIUS,a+=2*Blockly.SNAP_RADIUS)}while(d);b.moveBy(c,a)}Blockly.Events.enable();Blockly.Events.isEnabled()&&!b.isShadow()&&Blockly.Events.fire(new Blockly.Events.Create(b));b.select()}};
 Blockly.WorkspaceSvg.prototype.recordDeleteAreas=function(){this.deleteAreaTrash_=this.trashcan?this.trashcan.getClientRect():null;this.deleteAreaToolbox_=this.flyout_?this.flyout_.getClientRect():this.toolbox_?this.toolbox_.getClientRect():null};
 Blockly.WorkspaceSvg.prototype.isDeleteArea=function(a){a=new goog.math.Coordinate(a.clientX,a.clientY);if(this.deleteAreaTrash_){if(this.deleteAreaTrash_.contains(a))return this.trashcan.setOpen_(!0),Blockly.Css.setCursor(Blockly.Css.Cursor.DELETE),!0;this.trashcan.setOpen_(!1)}if(this.deleteAreaToolbox_&&this.deleteAreaToolbox_.contains(a))return Blockly.Css.setCursor(Blockly.Css.Cursor.DELETE),!0;Blockly.Css.setCursor(Blockly.Css.Cursor.CLOSED);return!1};
@@ -1036,8 +1045,8 @@ Blockly.WorkspaceSvg.prototype.showContextMenu_=function(a){function b(a){if(a.i
 h.text=Blockly.Msg.COLLAPSE_ALL;h.callback=function(){q(!0)};d.push(h);g={enabled:g};g.text=Blockly.Msg.EXPAND_ALL;g.callback=function(){q(!1)};d.push(g)}for(var m=[],k=0;k<e.length;k++)b(e[k]);g={text:1==m.length?Blockly.Msg.DELETE_BLOCK:Blockly.Msg.DELETE_X_BLOCKS.replace("%1",String(m.length)),enabled:0<m.length,callback:function(){(2>m.length||window.confirm(Blockly.Msg.DELETE_ALL_BLOCKS.replace("%1",String(m.length))))&&c()}};d.push(g);Blockly.ContextMenu.show(a,d,this.RTL)}};
 Blockly.WorkspaceSvg.prototype.loadAudio_=function(a,b){if(a.length){try{var c=new window.Audio}catch(h){return}for(var d,e=0;e<a.length;e++){var f=a[e],g=f.match(/\.(\w+)$/);if(g&&c.canPlayType("audio/"+g[1])){d=new window.Audio(f);break}}d&&d.play&&(this.SOUNDS_[b]=d)}};Blockly.WorkspaceSvg.prototype.preloadAudio_=function(){for(var a in this.SOUNDS_){var b=this.SOUNDS_[a];b.volume=.01;b.play();b.pause();if(goog.userAgent.IPAD||goog.userAgent.IPHONE)break}};
 Blockly.WorkspaceSvg.prototype.playAudio=function(a,b){var c=this.SOUNDS_[a];c?(c=goog.userAgent.DOCUMENT_MODE&&9===goog.userAgent.DOCUMENT_MODE||goog.userAgent.IPAD||goog.userAgent.ANDROID?c:c.cloneNode(),c.volume=void 0===b?1:b,c.play()):this.options.parentWorkspace&&this.options.parentWorkspace.playAudio(a,b)};
-Blockly.WorkspaceSvg.prototype.updateToolbox=function(a){if(a=Blockly.parseToolboxTree_(a)){if(!this.options.languageTree)throw"Existing toolbox is null.  Can't create new toolbox.";if(a.getElementsByTagName("category").length){if(!this.toolbox_)throw"Existing toolbox has no categories.  Can't change mode.";this.options.languageTree=a;this.toolbox_.populate_(a);this.toolbox_.addColour_()}else{if(!this.flyout_)throw"Existing toolbox has categories.  Can't change mode.";this.options.languageTree=a;
-this.flyout_.show(a.childNodes)}}else if(this.options.languageTree)throw"Can't nullify an existing toolbox.";};Blockly.WorkspaceSvg.prototype.markFocused=function(){this.options.parentWorkspace?this.options.parentWorkspace.markFocused():Blockly.mainWorkspace=this};
+Blockly.WorkspaceSvg.prototype.updateToolbox=function(a){if(a=Blockly.Options.parseToolboxTree(a)){if(!this.options.languageTree)throw"Existing toolbox is null.  Can't create new toolbox.";if(a.getElementsByTagName("category").length){if(!this.toolbox_)throw"Existing toolbox has no categories.  Can't change mode.";this.options.languageTree=a;this.toolbox_.populate_(a);this.toolbox_.addColour_()}else{if(!this.flyout_)throw"Existing toolbox has categories.  Can't change mode.";this.options.languageTree=
+a;this.flyout_.show(a.childNodes)}}else if(this.options.languageTree)throw"Can't nullify an existing toolbox.";};Blockly.WorkspaceSvg.prototype.markFocused=function(){this.options.parentWorkspace?this.options.parentWorkspace.markFocused():Blockly.mainWorkspace=this};
 Blockly.WorkspaceSvg.prototype.zoom=function(a,b,c){var d=this.options.zoomOptions.scaleSpeed,e=this.getMetrics(),f=this.getParentSvg().createSVGPoint();f.x=a;f.y=b;f=f.matrixTransform(this.getCanvas().getCTM().inverse());a=f.x;b=f.y;f=this.getCanvas();c=1==c?d:1/d;d=this.scale*c;d>this.options.zoomOptions.maxScale?c=this.options.zoomOptions.maxScale/this.scale:d<this.options.zoomOptions.minScale&&(c=this.options.zoomOptions.minScale/this.scale);a=f.getCTM().translate(a*(1-c),b*(1-c)).scale(c);this.scale!=
 a.a&&(this.scale=a.a,this.scrollX=a.e-e.absoluteLeft,this.scrollY=a.f-e.absoluteTop,this.updateGridPattern_(),this.scrollbar?this.scrollbar.resize():this.translate(0,0),Blockly.hideChaff(!1),this.flyout_&&this.flyout_.reflow())};Blockly.WorkspaceSvg.prototype.zoomCenter=function(a){var b=this.getMetrics();this.zoom(b.viewWidth/2,b.viewHeight/2,a)};
 Blockly.WorkspaceSvg.prototype.zoomToFit=function(){var a=this.svgBackground_.getBBox(),b=this.svgBlockCanvas_.getBBox(),c=a.width-this.toolbox_.width-Blockly.Scrollbar.scrollbarThickness,a=a.height-Blockly.Scrollbar.scrollbarThickness,d=b.width,b=b.height;if(0!=d){var e=this.options.zoomOptions.scaleSpeed,c=Math.pow(e,Math.floor(Math.log(Math.min(c/d,a/b))/Math.log(e)));c>this.options.zoomOptions.maxScale?c=this.options.zoomOptions.maxScale:c<this.options.zoomOptions.minScale&&(c=this.options.zoomOptions.minScale);
@@ -1061,11 +1070,11 @@ Blockly.Warning.prototype.drawIcon_=function(a){Blockly.createSvgElement("path",
 Blockly.Warning.textToDom_=function(a){var b=Blockly.createSvgElement("text",{"class":"blocklyText blocklyBubbleText",y:Blockly.Bubble.BORDER_WIDTH},null);a=a.split("\n");for(var c=0;c<a.length;c++){var d=Blockly.createSvgElement("tspan",{dy:"1em",x:Blockly.Bubble.BORDER_WIDTH},b),e=document.createTextNode(a[c]);d.appendChild(e)}return b};
 Blockly.Warning.prototype.setVisible=function(a){if(a!=this.isVisible())if(Blockly.Events.fire(new Blockly.Events.Ui(this.block_,"warningOpen",!a,a)),a){a=Blockly.Warning.textToDom_(this.getText());this.bubble_=new Blockly.Bubble(this.block_.workspace,a,this.block_.svgPath_,this.iconX_,this.iconY_,null,null);if(this.block_.RTL)for(var b=a.getBBox().width,c=0,d;d=a.childNodes[c];c++)d.setAttribute("text-anchor","end"),d.setAttribute("x",b+Blockly.Bubble.BORDER_WIDTH);this.updateColour();a=this.bubble_.getBubbleSize();
 this.bubble_.setBubbleSize(a.width,a.height)}else this.bubble_.dispose(),this.body_=this.bubble_=null};Blockly.Warning.prototype.bodyFocus_=function(a){this.bubble_.promote_()};Blockly.Warning.prototype.setText=function(a,b){this.text_[b]!=a&&(a?this.text_[b]=a:delete this.text_[b],this.isVisible()&&(this.setVisible(!1),this.setVisible(!0)))};Blockly.Warning.prototype.getText=function(){var a=[],b;for(b in this.text_)a.push(this.text_[b]);return a.join("\n")};
-Blockly.Warning.prototype.dispose=function(){this.block_.warning=null;Blockly.Icon.prototype.dispose.call(this)};Blockly.Block=function(a,b,c){this.id=c&&!Blockly.Block.getById(c)?c:Blockly.genUid();Blockly.Block.BlockDB_[this.id]=this;this.previousConnection=this.nextConnection=this.outputConnection=null;this.inputList=[];this.inputsInline=void 0;this.disabled=!1;this.tooltip="";this.contextMenu=!0;this.parentBlock_=null;this.childBlocks_=[];this.editable_=this.movable_=this.deletable_=!0;this.collapsed_=this.isShadow_=!1;this.comment=null;this.xy_=new goog.math.Coordinate(0,0);this.workspace=a;this.isInFlyout=
-a.isFlyout;this.RTL=a.RTL;b&&(this.type=b,c=Blockly.Blocks[b],goog.asserts.assertObject(c,'Error: "%s" is an unknown language block.',b),goog.mixin(this,c));a.addTopBlock(this);goog.isFunction(this.init)&&this.init();this.inputsInlineDefault=this.inputsInline;Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Create(this));goog.isFunction(this.onchange)&&(this.onchangeWrapper_=this.onchange.bind(this),this.workspace.addChangeListener(this.onchangeWrapper_))};
+Blockly.Warning.prototype.dispose=function(){this.block_.warning=null;Blockly.Icon.prototype.dispose.call(this)};Blockly.Block=function(a,b,c){this.id=c&&!a.getBlockById(c)?c:Blockly.genUid();a.blockDB_[this.id]=this;this.previousConnection=this.nextConnection=this.outputConnection=null;this.inputList=[];this.inputsInline=void 0;this.disabled=!1;this.tooltip="";this.contextMenu=!0;this.parentBlock_=null;this.childBlocks_=[];this.editable_=this.movable_=this.deletable_=!0;this.collapsed_=this.isShadow_=!1;this.comment=null;this.xy_=new goog.math.Coordinate(0,0);this.workspace=a;this.isInFlyout=a.isFlyout;this.RTL=
+a.RTL;b&&(this.type=b,c=Blockly.Blocks[b],goog.asserts.assertObject(c,'Error: "%s" is an unknown language block.',b),goog.mixin(this,c));a.addTopBlock(this);goog.isFunction(this.init)&&this.init();this.inputsInlineDefault=this.inputsInline;Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Create(this));goog.isFunction(this.onchange)&&(this.onchangeWrapper_=this.onchange.bind(this),this.workspace.addChangeListener(this.onchangeWrapper_))};
 Blockly.Block.obtain=function(a,b){console.warn("Deprecated call to Blockly.Block.obtain, use workspace.newBlock instead.");return a.newBlock(b)};Blockly.Block.prototype.data=null;Blockly.Block.prototype.colour_="#000000";
-Blockly.Block.prototype.dispose=function(a){this.onchangeWrapper_&&this.workspace.removeChangeListener(this.onchangeWrapper_);this.unplug(a);Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Delete(this));Blockly.Events.disable();this.workspace&&(this.workspace.removeTopBlock(this),this.workspace=null);for(a=this.childBlocks_.length-1;0<=a;a--)this.childBlocks_[a].dispose(!1);a=0;for(var b;b=this.inputList[a];a++)b.dispose();this.inputList.length=0;b=this.getConnections_(!0);for(a=
-0;a<b.length;a++){var c=b[a];c.isConnected()&&c.disconnect();b[a].dispose()}delete Blockly.Block.BlockDB_[this.id];Blockly.Events.enable()};
+Blockly.Block.prototype.dispose=function(a){this.onchangeWrapper_&&this.workspace.removeChangeListener(this.onchangeWrapper_);this.unplug(a);Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Delete(this));Blockly.Events.disable();this.workspace&&(this.workspace.removeTopBlock(this),delete this.workspace.blockDB_[this.id],this.workspace=null);for(a=this.childBlocks_.length-1;0<=a;a--)this.childBlocks_[a].dispose(!1);a=0;for(var b;b=this.inputList[a];a++)b.dispose();this.inputList.length=
+0;b=this.getConnections_(!0);for(a=0;a<b.length;a++){var c=b[a];c.isConnected()&&c.disconnect();b[a].dispose()}Blockly.Events.enable()};
 Blockly.Block.prototype.unplug=function(a){if(this.outputConnection)this.outputConnection.isConnected()&&this.outputConnection.disconnect();else if(this.previousConnection){var b=null;this.previousConnection.isConnected()&&(b=this.previousConnection.targetConnection,this.previousConnection.disconnect());var c=this.getNextBlock();a&&c&&(a=this.nextConnection.targetConnection,a.disconnect(),b&&b.checkType_(a)&&b.connect(a))}};
 Blockly.Block.prototype.getConnections_=function(){var a=[];this.outputConnection&&a.push(this.outputConnection);this.previousConnection&&a.push(this.previousConnection);this.nextConnection&&a.push(this.nextConnection);for(var b=0,c;c=this.inputList[b];b++)c.connection&&a.push(c.connection);return a};Blockly.Block.prototype.lastConnectionInStack_=function(){for(var a=this.nextConnection;a;){var b=a.targetBlock();if(!b)return a;a=b.nextConnection}return null};
 Blockly.Block.prototype.bumpNeighbours_=function(){if(this.workspace&&Blockly.dragMode_==Blockly.DRAG_NONE){var a=this.getRootBlock();if(!a.isInFlyout)for(var b=this.getConnections_(!1),c=0,d;d=b[c];c++){d.isConnected()&&d.isSuperior()&&d.targetBlock().bumpNeighbours_();for(var e=d.neighbours_(Blockly.SNAP_RADIUS),f=0,g;g=e[f];f++)d.isConnected()&&g.isConnected()||g.getSourceBlock().getRootBlock()!=a&&(d.isSuperior()?g.bumpAwayFrom_(d):d.bumpAwayFrom_(g))}}};Blockly.Block.prototype.getParent=function(){return this.parentBlock_};
@@ -1079,10 +1088,10 @@ Blockly.Block.prototype.setHelpUrl=function(a){this.helpUrl=a};Blockly.Block.pro
 Blockly.Block.prototype.getField=function(a){for(var b=0,c;c=this.inputList[b];b++)for(var d=0,e;e=c.fieldRow[d];d++)if(e.name===a)return e;return null};Blockly.Block.prototype.getVars=function(){for(var a=[],b=0,c;c=this.inputList[b];b++)for(var d=0,e;e=c.fieldRow[d];d++)e instanceof Blockly.FieldVariable&&a.push(e.getValue());return a};
 Blockly.Block.prototype.renameVar=function(a,b){for(var c=0,d;d=this.inputList[c];c++)for(var e=0,f;f=d.fieldRow[e];e++)f instanceof Blockly.FieldVariable&&Blockly.Names.equals(a,f.getValue())&&f.setValue(b)};Blockly.Block.prototype.getFieldValue=function(a){return(a=this.getField(a))?a.getValue():null};Blockly.Block.prototype.getTitleValue=function(a){console.warn("Deprecated call to getTitleValue, use getFieldValue instead.");return this.getFieldValue(a)};
 Blockly.Block.prototype.setFieldValue=function(a,b){var c=this.getField(b);goog.asserts.assertObject(c,'Field "%s" not found.',b);c.setValue(a)};Blockly.Block.prototype.setTitleValue=function(a,b){console.warn("Deprecated call to setTitleValue, use setFieldValue instead.");this.setFieldValue(a,b)};
-Blockly.Block.prototype.setPreviousStatement=function(a,b){this.previousConnection&&(goog.asserts.assert(!this.previousConnection.isConnected(),"Must disconnect previous statement before removing connection."),this.previousConnection.dispose(),this.previousConnection=null);a&&(goog.asserts.assert(!this.outputConnection,"Remove output connection prior to adding previous connection."),void 0===b&&(b=null),this.previousConnection=new Blockly.Connection(this,Blockly.PREVIOUS_STATEMENT),this.previousConnection.setCheck(b))};
-Blockly.Block.prototype.setNextStatement=function(a,b){this.nextConnection&&(goog.asserts.assert(!this.nextConnection.isConnected(),"Must disconnect next statement before removing connection."),this.nextConnection.dispose(),this.nextConnection=null);a&&(void 0===b&&(b=null),this.nextConnection=new Blockly.Connection(this,Blockly.NEXT_STATEMENT),this.nextConnection.setCheck(b))};
-Blockly.Block.prototype.setOutput=function(a,b){this.outputConnection&&(goog.asserts.assert(!this.outputConnection.isConnected(),"Must disconnect output value before removing connection."),this.outputConnection.dispose(),this.outputConnection=null);a&&(goog.asserts.assert(!this.previousConnection,"Remove previous connection prior to adding output connection."),void 0===b&&(b=null),this.outputConnection=new Blockly.Connection(this,Blockly.OUTPUT_VALUE),this.outputConnection.setCheck(b))};
-Blockly.Block.prototype.setInputsInline=function(a){this.inputsInline!=a&&(Blockly.Events.fire(new Blockly.Events.Change(this,"inline",null,this.inputsInline,a)),this.inputsInline=a)};
+Blockly.Block.prototype.setPreviousStatement=function(a,b){a?(void 0===b&&(b=null),this.previousConnection||(goog.asserts.assert(!this.outputConnection,"Remove output connection prior to adding previous connection."),this.previousConnection=new Blockly.Connection(this,Blockly.PREVIOUS_STATEMENT)),this.previousConnection.setCheck(b)):this.previousConnection&&(goog.asserts.assert(!this.previousConnection.isConnected(),"Must disconnect previous statement before removing connection."),this.previousConnection.dispose(),
+this.previousConnection=null)};Blockly.Block.prototype.setNextStatement=function(a,b){a?(void 0===b&&(b=null),this.nextConnection||(this.nextConnection=new Blockly.Connection(this,Blockly.NEXT_STATEMENT)),this.nextConnection.setCheck(b)):this.nextConnection&&(goog.asserts.assert(!this.nextConnection.isConnected(),"Must disconnect next statement before removing connection."),this.nextConnection.dispose(),this.nextConnection=null)};
+Blockly.Block.prototype.setOutput=function(a,b){a?(void 0===b&&(b=null),this.outputConnection||(goog.asserts.assert(!this.previousConnection,"Remove previous connection prior to adding output connection."),this.outputConnection=new Blockly.Connection(this,Blockly.OUTPUT_VALUE)),this.outputConnection.setCheck(b)):this.outputConnection&&(goog.asserts.assert(!this.outputConnection.isConnected(),"Must disconnect output value before removing connection."),this.outputConnection.dispose(),this.outputConnection=
+null)};Blockly.Block.prototype.setInputsInline=function(a){this.inputsInline!=a&&(Blockly.Events.fire(new Blockly.Events.Change(this,"inline",null,this.inputsInline,a)),this.inputsInline=a)};
 Blockly.Block.prototype.getInputsInline=function(){if(void 0!=this.inputsInline)return this.inputsInline;for(var a=1;a<this.inputList.length;a++)if(this.inputList[a-1].type==Blockly.DUMMY_INPUT&&this.inputList[a].type==Blockly.DUMMY_INPUT)return!1;for(a=1;a<this.inputList.length;a++)if(this.inputList[a-1].type==Blockly.INPUT_VALUE&&this.inputList[a].type==Blockly.DUMMY_INPUT)return!0;return!1};
 Blockly.Block.prototype.setDisabled=function(a){this.disabled!=a&&(Blockly.Events.fire(new Blockly.Events.Change(this,"disabled",null,this.disabled,a)),this.disabled=a)};Blockly.Block.prototype.getInheritedDisabled=function(){for(var a=this;;){a=a.getSurroundParent();if(!a)return!1;if(a.disabled)return!0}};Blockly.Block.prototype.isCollapsed=function(){return this.collapsed_};
 Blockly.Block.prototype.setCollapsed=function(a){this.collapsed_!=a&&(Blockly.Events.fire(new Blockly.Events.Change(this,"collapsed",null,this.collapsed_,a)),this.collapsed_=a)};
@@ -1098,11 +1107,11 @@ Blockly.Block.prototype.moveInputBefore=function(a,b){if(a!=b){for(var c=-1,d=b?
 Blockly.Block.prototype.moveNumberedInputBefore=function(a,b){goog.asserts.assert(a!=b,"Can't move input to itself.");goog.asserts.assert(a<this.inputList.length,"Input index "+a+" out of bounds.");goog.asserts.assert(b<=this.inputList.length,"Reference input "+b+" out of bounds.");var c=this.inputList[a];this.inputList.splice(a,1);a<b&&b--;this.inputList.splice(b,0,c)};
 Blockly.Block.prototype.removeInput=function(a,b){for(var c=0,d;d=this.inputList[c];c++)if(d.name==a){if(d.connection&&d.connection.isConnected()){d.connection.setShadowDom(null);var e=d.connection.targetBlock();e.isShadow()?e.dispose():e.unplug()}d.dispose();this.inputList.splice(c,1);return}b||goog.asserts.fail('Input "%s" not found.',a)};Blockly.Block.prototype.getInput=function(a){for(var b=0,c;c=this.inputList[b];b++)if(c.name==a)return c;return null};
 Blockly.Block.prototype.getInputTargetBlock=function(a){return(a=this.getInput(a))&&a.connection&&a.connection.targetBlock()};Blockly.Block.prototype.getCommentText=function(){return this.comment||""};Blockly.Block.prototype.setCommentText=function(a){this.comment!=a&&(Blockly.Events.fire(new Blockly.Events.Change(this,"comment",null,this.comment,a||"")),this.comment=a)};Blockly.Block.prototype.setWarningText=function(a){};Blockly.Block.prototype.setMutator=function(a){};
-Blockly.Block.prototype.getRelativeToSurfaceXY=function(){return this.xy_};Blockly.Block.prototype.moveBy=function(a,b){goog.asserts.assert(!this.parentBlock_,"Block has parent.");var c=new Blockly.Events.Move(this);this.xy_.translate(a,b);c.recordNew();Blockly.Events.fire(c)};Blockly.Block.BlockDB_=Object.create(null);Blockly.Block.getById=function(a){return Blockly.Block.BlockDB_[a]||null};Blockly.ContextMenu={};Blockly.ContextMenu.currentBlock=null;
+Blockly.Block.prototype.getRelativeToSurfaceXY=function(){return this.xy_};Blockly.Block.prototype.moveBy=function(a,b){goog.asserts.assert(!this.parentBlock_,"Block has parent.");var c=new Blockly.Events.Move(this);this.xy_.translate(a,b);c.recordNew();Blockly.Events.fire(c)};Blockly.ContextMenu={};Blockly.ContextMenu.currentBlock=null;
 Blockly.ContextMenu.show=function(a,b,c){Blockly.WidgetDiv.show(Blockly.ContextMenu,c,null);if(b.length){var d=new goog.ui.Menu;d.setRightToLeft(c);for(var e=0,f;f=b[e];e++){var g=new goog.ui.MenuItem(f.text);g.setRightToLeft(c);d.addChild(g,!0);g.setEnabled(f.enabled);f.enabled&&goog.events.listen(g,goog.ui.Component.EventType.ACTION,f.callback)}goog.events.listen(d,goog.ui.Component.EventType.ACTION,Blockly.ContextMenu.hide);b=goog.dom.getViewportSize();f=goog.style.getViewportPageOffset(document);
 d.render(Blockly.WidgetDiv.DIV);var h=d.getElement();Blockly.addClass_(h,"blocklyContextMenu");var g=goog.style.getSize(h),e=a.clientX+f.x,k=a.clientY+f.y;a.clientY+g.height>=b.height&&(k-=g.height);c?g.width>=a.clientX&&(e+=g.width):a.clientX+g.width>=b.width&&(e-=g.width);Blockly.WidgetDiv.position(e,k,b,f,c);d.setAllowAutoFocus(!0);setTimeout(function(){h.focus()},1);Blockly.ContextMenu.currentBlock=null}else Blockly.ContextMenu.hide()};
 Blockly.ContextMenu.hide=function(){Blockly.WidgetDiv.hideIfOwner(Blockly.ContextMenu);Blockly.ContextMenu.currentBlock=null};
-Blockly.ContextMenu.callbackFactory=function(a,b){return function(){Blockly.Events.disable();var c=Blockly.Xml.domToBlock(a.workspace,b),d=a.getRelativeToSurfaceXY();d.x=a.RTL?d.x-Blockly.SNAP_RADIUS:d.x+Blockly.SNAP_RADIUS;d.y+=2*Blockly.SNAP_RADIUS;c.moveBy(d.x,d.y);Blockly.Events.enable();Blockly.Events.isEnabled()&&!c.isShadow()&&Blockly.Events.fire(new Blockly.Events.Create(c));c.select()}};Blockly.BlockSvg=function(a,b,c){this.svgGroup_=Blockly.createSvgElement("g",{},null);this.svgPathDark_=Blockly.createSvgElement("path",{"class":"blocklyPathDark",transform:"translate(1,1)"},this.svgGroup_);this.svgPath_=Blockly.createSvgElement("path",{"class":"blocklyPath"},this.svgGroup_);this.svgPathLight_=Blockly.createSvgElement("path",{"class":"blocklyPathLight"},this.svgGroup_);this.svgPath_.tooltip=this;this.rendered=!1;Blockly.Tooltip.bindMouseEvents(this.svgPath_);Blockly.BlockSvg.superClass_.constructor.call(this,
+Blockly.ContextMenu.callbackFactory=function(a,b){return function(){Blockly.Events.disable();var c=Blockly.Xml.domToBlock(b,a.workspace),d=a.getRelativeToSurfaceXY();d.x=a.RTL?d.x-Blockly.SNAP_RADIUS:d.x+Blockly.SNAP_RADIUS;d.y+=2*Blockly.SNAP_RADIUS;c.moveBy(d.x,d.y);Blockly.Events.enable();Blockly.Events.isEnabled()&&!c.isShadow()&&Blockly.Events.fire(new Blockly.Events.Create(c));c.select()}};Blockly.BlockSvg=function(a,b,c){this.svgGroup_=Blockly.createSvgElement("g",{},null);this.svgPathDark_=Blockly.createSvgElement("path",{"class":"blocklyPathDark",transform:"translate(1,1)"},this.svgGroup_);this.svgPath_=Blockly.createSvgElement("path",{"class":"blocklyPath"},this.svgGroup_);this.svgPathLight_=Blockly.createSvgElement("path",{"class":"blocklyPathLight"},this.svgGroup_);this.svgPath_.tooltip=this;this.rendered=!1;Blockly.Tooltip.bindMouseEvents(this.svgPath_);Blockly.BlockSvg.superClass_.constructor.call(this,
 a,b,c)};goog.inherits(Blockly.BlockSvg,Blockly.Block);Blockly.BlockSvg.prototype.height=0;Blockly.BlockSvg.prototype.width=0;Blockly.BlockSvg.prototype.dragStartXY_=null;Blockly.BlockSvg.INLINE=-1;
 Blockly.BlockSvg.prototype.initSvg=function(){goog.asserts.assert(this.workspace.rendered,"Workspace is headless.");for(var a=0,b;b=this.inputList[a];a++)b.init();b=this.getIcons();for(a=0;a<b.length;a++)b[a].createIcon();this.updateColour();this.updateMovable();if(!this.workspace.options.readOnly&&!this.eventsInit_){Blockly.bindEvent_(this.getSvgRoot(),"mousedown",this,this.onMouseDown_);var c=this;Blockly.bindEvent_(this.getSvgRoot(),"touchstart",null,function(a){Blockly.longStart_(a,c)})}this.eventsInit_=
 !0;this.getSvgRoot().parentNode||this.workspace.getCanvas().appendChild(this.getSvgRoot())};Blockly.BlockSvg.prototype.select=function(){if(Blockly.selected!=this){var a=null;Blockly.selected&&(a=Blockly.selected.id,Blockly.Events.disable(),Blockly.selected.unselect(),Blockly.Events.enable());a=new Blockly.Events.Ui(null,"selected",a,this.id);a.workspaceId=this.workspace.id;Blockly.Events.fire(a);Blockly.selected=this;this.addSelect();Blockly.fireUiEvent(this.workspace.getCanvas(),"blocklySelectChange")}};
@@ -1152,9 +1161,7 @@ e.setWarningText(a,c))},100)}else{this.isInFlyout&&(a=null);d=this.getSurroundPa
 Blockly.BlockSvg.prototype.removeSelect=function(){Blockly.removeClass_(this.svgGroup_,"blocklySelected")};Blockly.BlockSvg.prototype.addDragging=function(){Blockly.addClass_(this.svgGroup_,"blocklyDragging")};Blockly.BlockSvg.prototype.removeDragging=function(){Blockly.removeClass_(this.svgGroup_,"blocklyDragging")};Blockly.BlockSvg.prototype.setColour=function(a){Blockly.BlockSvg.superClass_.setColour.call(this,a);this.rendered&&this.updateColour()};
 Blockly.BlockSvg.prototype.setPreviousStatement=function(a,b){Blockly.BlockSvg.superClass_.setPreviousStatement.call(this,a,b);this.rendered&&(this.render(),this.bumpNeighbours_())};Blockly.BlockSvg.prototype.setNextStatement=function(a,b){Blockly.BlockSvg.superClass_.setNextStatement.call(this,a,b);this.rendered&&(this.render(),this.bumpNeighbours_())};Blockly.BlockSvg.prototype.setOutput=function(a,b){Blockly.BlockSvg.superClass_.setOutput.call(this,a,b);this.rendered&&(this.render(),this.bumpNeighbours_())};
 Blockly.BlockSvg.prototype.setInputsInline=function(a){Blockly.BlockSvg.superClass_.setInputsInline.call(this,a);this.rendered&&(this.render(),this.bumpNeighbours_())};Blockly.BlockSvg.prototype.removeInput=function(a,b){Blockly.BlockSvg.superClass_.removeInput.call(this,a,b);this.rendered&&(this.render(),this.bumpNeighbours_())};Blockly.BlockSvg.prototype.moveNumberedInputBefore=function(a,b){Blockly.BlockSvg.superClass_.moveNumberedInputBefore.call(this,a,b);this.rendered&&(this.render(),this.bumpNeighbours_())};
-Blockly.BlockSvg.prototype.appendInput_=function(a,b){var c=Blockly.BlockSvg.superClass_.appendInput_.call(this,a,b);this.rendered&&(this.render(),this.bumpNeighbours_());return c};Blockly.BlockSvg.prototype.getConnections_=function(a){var b=[];if(a||this.rendered)if(this.outputConnection&&b.push(this.outputConnection),this.previousConnection&&b.push(this.previousConnection),this.nextConnection&&b.push(this.nextConnection),a||!this.collapsed_){a=0;for(var c;c=this.inputList[a];a++)c.connection&&b.push(c.connection)}return b};
-// Copyright 2016 Google Inc.  Apache License 2.0
-Blockly.BlockSvg.render={};Blockly.BlockSvg.SEP_SPACE_X=10;Blockly.BlockSvg.SEP_SPACE_Y=10;Blockly.BlockSvg.INLINE_PADDING_Y=5;Blockly.BlockSvg.MIN_BLOCK_Y=25;Blockly.BlockSvg.TAB_HEIGHT=20;Blockly.BlockSvg.TAB_WIDTH=8;Blockly.BlockSvg.NOTCH_WIDTH=30;Blockly.BlockSvg.CORNER_RADIUS=8;Blockly.BlockSvg.START_HAT=!1;Blockly.BlockSvg.START_HAT_PATH="c 30,-15 70,-15 100,0";Blockly.BlockSvg.START_HAT_HIGHLIGHT_LTR="c 17.8,-9.2 45.3,-14.9 75,-8.7 M 100.5,0.5";Blockly.BlockSvg.START_HAT_HIGHLIGHT_RTL="m 25,-8.7 c 29.7,-6.2 57.2,-0.5 75,8.7";
+Blockly.BlockSvg.prototype.appendInput_=function(a,b){var c=Blockly.BlockSvg.superClass_.appendInput_.call(this,a,b);this.rendered&&(this.render(),this.bumpNeighbours_());return c};Blockly.BlockSvg.prototype.getConnections_=function(a){var b=[];if(a||this.rendered)if(this.outputConnection&&b.push(this.outputConnection),this.previousConnection&&b.push(this.previousConnection),this.nextConnection&&b.push(this.nextConnection),a||!this.collapsed_){a=0;for(var c;c=this.inputList[a];a++)c.connection&&b.push(c.connection)}return b};Blockly.BlockSvg.render={};Blockly.BlockSvg.SEP_SPACE_X=10;Blockly.BlockSvg.SEP_SPACE_Y=10;Blockly.BlockSvg.INLINE_PADDING_Y=5;Blockly.BlockSvg.MIN_BLOCK_Y=25;Blockly.BlockSvg.TAB_HEIGHT=20;Blockly.BlockSvg.TAB_WIDTH=8;Blockly.BlockSvg.NOTCH_WIDTH=30;Blockly.BlockSvg.CORNER_RADIUS=8;Blockly.BlockSvg.START_HAT=!1;Blockly.BlockSvg.START_HAT_PATH="c 30,-15 70,-15 100,0";Blockly.BlockSvg.START_HAT_HIGHLIGHT_LTR="c 17.8,-9.2 45.3,-14.9 75,-8.7 M 100.5,0.5";Blockly.BlockSvg.START_HAT_HIGHLIGHT_RTL="m 25,-8.7 c 29.7,-6.2 57.2,-0.5 75,8.7";
 Blockly.BlockSvg.DISTANCE_45_INSIDE=(1-Math.SQRT1_2)*(Blockly.BlockSvg.CORNER_RADIUS-.5)+.5;Blockly.BlockSvg.DISTANCE_45_OUTSIDE=(1-Math.SQRT1_2)*(Blockly.BlockSvg.CORNER_RADIUS+.5)-.5;Blockly.BlockSvg.NOTCH_PATH_LEFT="l 6,4 3,0 6,-4";Blockly.BlockSvg.NOTCH_PATH_LEFT_HIGHLIGHT="l 6,4 3,0 6,-4";Blockly.BlockSvg.NOTCH_PATH_RIGHT="l -6,4 -3,0 -6,-4";Blockly.BlockSvg.JAGGED_TEETH="l 8,0 0,4 8,4 -16,8 8,4";Blockly.BlockSvg.JAGGED_TEETH_HEIGHT=20;Blockly.BlockSvg.JAGGED_TEETH_WIDTH=15;
 Blockly.BlockSvg.TAB_PATH_DOWN="v 5 c 0,10 -"+Blockly.BlockSvg.TAB_WIDTH+",-8 -"+Blockly.BlockSvg.TAB_WIDTH+",7.5 s "+Blockly.BlockSvg.TAB_WIDTH+",-2.5 "+Blockly.BlockSvg.TAB_WIDTH+",7.5";Blockly.BlockSvg.TAB_PATH_DOWN_HIGHLIGHT_RTL="v 6.5 m -"+.97*Blockly.BlockSvg.TAB_WIDTH+",3 q -"+.05*Blockly.BlockSvg.TAB_WIDTH+",10 "+.3*Blockly.BlockSvg.TAB_WIDTH+",9.5 m "+.67*Blockly.BlockSvg.TAB_WIDTH+",-1.9 v 1.4";Blockly.BlockSvg.TOP_LEFT_CORNER_START="m 0,"+Blockly.BlockSvg.CORNER_RADIUS;
 Blockly.BlockSvg.TOP_LEFT_CORNER_START_HIGHLIGHT_RTL="m "+Blockly.BlockSvg.DISTANCE_45_INSIDE+","+Blockly.BlockSvg.DISTANCE_45_INSIDE;Blockly.BlockSvg.TOP_LEFT_CORNER_START_HIGHLIGHT_LTR="m 0.5,"+(Blockly.BlockSvg.CORNER_RADIUS-.5);Blockly.BlockSvg.TOP_LEFT_CORNER="A "+Blockly.BlockSvg.CORNER_RADIUS+","+Blockly.BlockSvg.CORNER_RADIUS+" 0 0,1 "+Blockly.BlockSvg.CORNER_RADIUS+",0";
@@ -1188,24 +1195,27 @@ a.push("a",Blockly.BlockSvg.CORNER_RADIUS+","+Blockly.BlockSvg.CORNER_RADIUS+" 0
 Blockly.BlockSvg.prototype.renderDrawLeft_=function(a,b,c,d){this.outputConnection?(this.outputConnection.moveTo(c.x,c.y),a.push("V",Blockly.BlockSvg.TAB_HEIGHT),a.push("c 0,-10 -"+Blockly.BlockSvg.TAB_WIDTH+",8 -"+Blockly.BlockSvg.TAB_WIDTH+",-7.5 s "+Blockly.BlockSvg.TAB_WIDTH+",2.5 "+Blockly.BlockSvg.TAB_WIDTH+",-7.5"),this.RTL?(b.push("M",-.25*Blockly.BlockSvg.TAB_WIDTH+",8.4"),b.push("l",-.45*Blockly.BlockSvg.TAB_WIDTH+",-2.1")):(b.push("V",Blockly.BlockSvg.TAB_HEIGHT-1.5),b.push("m",-.92*Blockly.BlockSvg.TAB_WIDTH+
 ",-0.5 q "+-.19*Blockly.BlockSvg.TAB_WIDTH+",-5.5 0,-11"),b.push("m",.92*Blockly.BlockSvg.TAB_WIDTH+",1 V 0.5 H 1")),this.width+=Blockly.BlockSvg.TAB_WIDTH):this.RTL||(this.squareTopLeftCorner_?b.push("V",.5):b.push("V",Blockly.BlockSvg.CORNER_RADIUS));a.push("z")};Blockly.Events={};Blockly.Events.group_="";Blockly.Events.recordUndo=!0;Blockly.Events.disabled_=0;Blockly.Events.CREATE="create";Blockly.Events.DELETE="delete";Blockly.Events.CHANGE="change";Blockly.Events.MOVE="move";Blockly.Events.UI="ui";Blockly.Events.FIRE_QUEUE_=[];Blockly.Events.fire=function(a){Blockly.Events.isEnabled()&&(Blockly.Events.FIRE_QUEUE_.length||setTimeout(Blockly.Events.fireNow_,0),Blockly.Events.FIRE_QUEUE_.push(a))};
 Blockly.Events.fireNow_=function(){for(var a=Blockly.Events.filter(Blockly.Events.FIRE_QUEUE_,!0),b=Blockly.Events.FIRE_QUEUE_.length=0,c;c=a[b];b++){var d=Blockly.Workspace.getById(c.workspaceId);d&&d.fireChangeListener(c)}};
-Blockly.Events.filter=function(a,b){var c=goog.array.clone(a);b||c.reverse();for(var d=0,e;e=c[d];d++)for(var f=d+1,g;g=c[f];f++)e.type==Blockly.Events.MOVE&&g.type==Blockly.Events.MOVE&&e.blockId==g.blockId?(e.newParentId=g.newParentId,e.newInputName=g.newInputName,e.newCoordinate=g.newCoordinate,c.splice(f,1),f--):e.type==Blockly.Events.CHANGE&&g.type==Blockly.Events.CHANGE&&e.blockId==g.blockId&&e.element==g.element&&e.name==g.name&&(e.newValue=g.newValue,c.splice(f,1),f--);for(d=c.length-1;0<=
-d;d--)c[d].isNull()&&c.splice(d,1);b||c.reverse();for(d=1;e=c[d];d++)e.type==Blockly.Events.CHANGE&&"mutation"==e.element&&c.unshift(c.splice(d,1)[0]);return c};Blockly.Events.clearPendingUndo=function(){for(var a=0,b;b=Blockly.Events.FIRE_QUEUE_[a];a++)b.recordUndo=!1};Blockly.Events.disable=function(){Blockly.Events.disabled_++};Blockly.Events.enable=function(){Blockly.Events.disabled_--};Blockly.Events.isEnabled=function(){return 0==Blockly.Events.disabled_};Blockly.Events.getGroup=function(){return Blockly.Events.group_};
-Blockly.Events.setGroup=function(a){Blockly.Events.group_="boolean"==typeof a?a?Blockly.genUid():"":a};Blockly.Events.getDescendantIds_=function(a){var b=[];a=a.getDescendants();for(var c=0,d;d=a[c];c++)b[c]=d.id;return b};Blockly.Events.Abstract=function(a){a&&(this.blockId=a.id,this.workspaceId=a.workspace.id);this.group=Blockly.Events.group_;this.recordUndo=Blockly.Events.recordUndo};
-Blockly.Events.Abstract.prototype.toJson=function(){var a={type:this.type,blockId:this.blockId,workspaceId:this.workspaceId};this.group&&(a.group=this.group);return a};Blockly.Events.Abstract.prototype.isNull=function(){return!1};Blockly.Events.Abstract.prototype.run=function(a){};Blockly.Events.Create=function(a){Blockly.Events.Create.superClass_.constructor.call(this,a);this.xml=Blockly.Xml.blockToDomWithXY(a);this.ids=Blockly.Events.getDescendantIds_(a)};goog.inherits(Blockly.Events.Create,Blockly.Events.Abstract);
-Blockly.Events.Create.prototype.type=Blockly.Events.CREATE;Blockly.Events.Create.prototype.toJson=function(){var a=Blockly.Events.Create.superClass_.toJson.call(this);a.xml=Blockly.Xml.domToText(this.xml);a.ids=this.ids;return a};
-Blockly.Events.Create.prototype.run=function(a){if(a){a=Blockly.Workspace.getById(this.workspaceId);var b=goog.dom.createDom("xml");b.appendChild(this.xml);Blockly.Xml.domToWorkspace(a,b)}else for(a=0;b=this.ids[a];a++){var c=Blockly.Block.getById(b);c?c.dispose(!1,!0):b==this.blockId&&console.warn("Can't uncreate non-existant block: "+b)}};
-Blockly.Events.Delete=function(a){if(a.getParent())throw"Connected blocks cannot be deleted.";Blockly.Events.Delete.superClass_.constructor.call(this,a);this.oldXml=Blockly.Xml.blockToDomWithXY(a);this.ids=Blockly.Events.getDescendantIds_(a)};goog.inherits(Blockly.Events.Delete,Blockly.Events.Abstract);Blockly.Events.Delete.prototype.type=Blockly.Events.DELETE;Blockly.Events.Delete.prototype.toJson=function(){var a=Blockly.Events.Delete.superClass_.toJson.call(this);a.ids=this.ids;return a};
-Blockly.Events.Delete.prototype.run=function(a){if(a){a=0;for(var b;b=this.ids[a];a++){var c=Blockly.Block.getById(b);c?c.dispose(!1,!0):b==this.blockId&&console.warn("Can't delete non-existant block: "+b)}}else a=Blockly.Workspace.getById(this.workspaceId),b=goog.dom.createDom("xml"),b.appendChild(this.oldXml),Blockly.Xml.domToWorkspace(a,b)};
-Blockly.Events.Change=function(a,b,c,d,e){Blockly.Events.Change.superClass_.constructor.call(this,a);this.element=b;this.name=c;this.oldValue=d;this.newValue=e};goog.inherits(Blockly.Events.Change,Blockly.Events.Abstract);Blockly.Events.Change.prototype.type=Blockly.Events.CHANGE;Blockly.Events.Change.prototype.toJson=function(){var a=Blockly.Events.Change.superClass_.toJson.call(this);a.element=this.element;this.name&&(a.name=this.name);a.newValue=this.newValue;return a};
-Blockly.Events.Change.prototype.isNull=function(){return this.oldValue==this.newValue};
-Blockly.Events.Change.prototype.run=function(a){var b=Blockly.Block.getById(this.blockId);if(b)switch(b.mutator&&b.mutator.setVisible(!1),a=a?this.newValue:this.oldValue,this.element){case "field":(b=b.getField(this.name))?b.setValue(a):console.warn("Can't set non-existant field: "+this.name);break;case "comment":b.setCommentText(a||null);break;case "collapsed":b.setCollapsed(a);break;case "disabled":b.setDisabled(a);break;case "inline":b.setInputsInline(a);break;case "mutation":var c="";b.mutationToDom&&
-(c=(c=b.mutationToDom())&&Blockly.Xml.domToText(c));if(b.domToMutation){a=a||"<mutation></mutation>";var d=Blockly.Xml.textToDom("<xml>"+a+"</xml>");b.domToMutation(d.firstChild)}Blockly.Events.fire(new Blockly.Events.Change(b,"mutation",null,c,a));break;default:console.warn("Unknown change type: "+this.element)}else console.warn("Can't change non-existant block: "+this.blockId)};
-Blockly.Events.Move=function(a){Blockly.Events.Move.superClass_.constructor.call(this,a);a=this.currentLocation_();this.oldParentId=a.parentId;this.oldInputName=a.inputName;this.oldCoordinate=a.coordinate};goog.inherits(Blockly.Events.Move,Blockly.Events.Abstract);Blockly.Events.Move.prototype.type=Blockly.Events.MOVE;
-Blockly.Events.Move.prototype.toJson=function(){var a=Blockly.Events.Move.superClass_.toJson.call(this);this.newParentId&&(a.newParentId=this.newParentId);this.newInputName&&(a.newInputName=this.newInputName);this.newCoordinate&&(a.newCoordinate=Math.round(this.newCoordinate.x)+","+Math.round(this.newCoordinate.y));return a};Blockly.Events.Move.prototype.recordNew=function(){var a=this.currentLocation_();this.newParentId=a.parentId;this.newInputName=a.inputName;this.newCoordinate=a.coordinate};
-Blockly.Events.Move.prototype.currentLocation_=function(){var a=Blockly.Block.getById(this.blockId),b={},c=a.getParent();if(c){if(b.parentId=c.id,a=c.getInputWithBlock(a))b.inputName=a.name}else b.coordinate=a.getRelativeToSurfaceXY();return b};Blockly.Events.Move.prototype.isNull=function(){return this.oldParentId==this.newParentId&&this.oldInputName==this.newInputName&&goog.math.Coordinate.equals(this.oldCoordinate,this.newCoordinate)};
-Blockly.Events.Move.prototype.run=function(a){var b=Blockly.Block.getById(this.blockId);if(b){var c=a?this.newParentId:this.oldParentId,d=a?this.newInputName:this.oldInputName;a=a?this.newCoordinate:this.oldCoordinate;var e=null;if(c&&(e=Blockly.Block.getById(c),!e)){console.warn("Can't connect to non-existant block: "+c);return}b.getParent()&&b.unplug();if(a)d=b.getRelativeToSurfaceXY(),b.moveBy(a.x-d.x,a.y-d.y);else{var b=b.outputConnection||b.previousConnection,f;if(d){if(c=e.getInput(d))f=c.connection}else b.type==
-Blockly.PREVIOUS_STATEMENT&&(f=e.nextConnection);f?b.connect(f):console.warn("Can't connect to non-existant input: "+d)}}else console.warn("Can't move non-existant block: "+this.blockId)};Blockly.Events.Ui=function(a,b,c,d){Blockly.Events.Ui.superClass_.constructor.call(this,a);this.element=b;this.oldValue=c;this.newValue=d;this.recordUndo=!1};goog.inherits(Blockly.Events.Ui,Blockly.Events.Abstract);Blockly.Events.Ui.prototype.type=Blockly.Events.UI;
-Blockly.Events.Ui.prototype.toJson=function(){var a=Blockly.Events.Ui.superClass_.toJson.call(this);a.element=this.element;void 0!==this.newValue&&(a.newValue=this.newValue);return a};Blockly.Msg={};goog.getMsgOrig=goog.getMsg;goog.getMsg=function(a,b){var c=goog.getMsg.blocklyMsgMap[a];c&&(a=Blockly.Msg[c]);return goog.getMsgOrig(a,b)};goog.getMsg.blocklyMsgMap={Today:"TODAY"};Blockly.FieldTextInput=function(a,b){Blockly.FieldTextInput.superClass_.constructor.call(this,a,b)};goog.inherits(Blockly.FieldTextInput,Blockly.Field);Blockly.FieldTextInput.FONTSIZE=11;Blockly.FieldTextInput.prototype.CURSOR="text";Blockly.FieldTextInput.prototype.spellcheck_=!0;Blockly.FieldTextInput.prototype.dispose=function(){Blockly.WidgetDiv.hideIfOwner(this);Blockly.FieldTextInput.superClass_.dispose.call(this)};
+Blockly.Events.filter=function(a,b){var c=goog.array.clone(a);b||c.reverse();for(var d=0,e;e=c[d];d++)for(var f=d+1,g;g=c[f];f++)e.type==g.type&&e.blockId==g.blockId&&e.workspaceId==g.workspaceId&&(e.type==Blockly.Events.MOVE?(e.newParentId=g.newParentId,e.newInputName=g.newInputName,e.newCoordinate=g.newCoordinate,c.splice(f,1),f--):e.type==Blockly.Events.CHANGE&&e.element==g.element&&e.name==g.name&&(e.newValue=g.newValue,c.splice(f,1),f--));for(d=c.length-1;0<=d;d--)c[d].isNull()&&c.splice(d,1);
+b||c.reverse();for(d=1;e=c[d];d++)e.type==Blockly.Events.CHANGE&&"mutation"==e.element&&c.unshift(c.splice(d,1)[0]);return c};Blockly.Events.clearPendingUndo=function(){for(var a=0,b;b=Blockly.Events.FIRE_QUEUE_[a];a++)b.recordUndo=!1};Blockly.Events.disable=function(){Blockly.Events.disabled_++};Blockly.Events.enable=function(){Blockly.Events.disabled_--};Blockly.Events.isEnabled=function(){return 0==Blockly.Events.disabled_};Blockly.Events.getGroup=function(){return Blockly.Events.group_};
+Blockly.Events.setGroup=function(a){Blockly.Events.group_="boolean"==typeof a?a?Blockly.genUid():"":a};Blockly.Events.getDescendantIds_=function(a){var b=[];a=a.getDescendants();for(var c=0,d;d=a[c];c++)b[c]=d.id;return b};
+Blockly.Events.fromJson=function(a,b){var c;switch(a.type){case Blockly.Events.CREATE:c=new Blockly.Events.Create(null);break;case Blockly.Events.DELETE:c=new Blockly.Events.Delete(null);break;case Blockly.Events.CHANGE:c=new Blockly.Events.Change(null);break;case Blockly.Events.MOVE:c=new Blockly.Events.Move(null);break;case Blockly.Events.UI:c=new Blockly.Events.Ui(null);break;default:throw"Unknown event type.";}c.fromJson(a);c.workspaceId=b.id;return c};
+Blockly.Events.Abstract=function(a){a&&(this.blockId=a.id,this.workspaceId=a.workspace.id);this.group=Blockly.Events.group_;this.recordUndo=Blockly.Events.recordUndo};Blockly.Events.Abstract.prototype.toJson=function(){var a={type:this.type,blockId:this.blockId};this.group&&(a.group=this.group);return a};Blockly.Events.Abstract.prototype.fromJson=function(a){this.blockId=a.blockId;this.group=a.group};Blockly.Events.Abstract.prototype.isNull=function(){return!1};
+Blockly.Events.Abstract.prototype.run=function(a){};Blockly.Events.Create=function(a){a&&(Blockly.Events.Create.superClass_.constructor.call(this,a),this.xml=Blockly.Xml.blockToDomWithXY(a),this.ids=Blockly.Events.getDescendantIds_(a))};goog.inherits(Blockly.Events.Create,Blockly.Events.Abstract);Blockly.Events.Create.prototype.type=Blockly.Events.CREATE;
+Blockly.Events.Create.prototype.toJson=function(){var a=Blockly.Events.Create.superClass_.toJson.call(this);a.xml=Blockly.Xml.domToText(this.xml);a.ids=this.ids;return a};Blockly.Events.Create.prototype.fromJson=function(a){Blockly.Events.Create.superClass_.fromJson.call(this,a);this.xml=Blockly.Xml.textToDom("<xml>"+a.xml+"</xml>").firstChild;this.ids=a.ids};
+Blockly.Events.Create.prototype.run=function(a){var b=Blockly.Workspace.getById(this.workspaceId);if(a)a=goog.dom.createDom("xml"),a.appendChild(this.xml),Blockly.Xml.domToWorkspace(a,b);else{a=0;for(var c;c=this.ids[a];a++){var d=b.getBlockById(c);d?d.dispose(!1,!0):c==this.blockId&&console.warn("Can't uncreate non-existant block: "+c)}}};
+Blockly.Events.Delete=function(a){if(a){if(a.getParent())throw"Connected blocks cannot be deleted.";Blockly.Events.Delete.superClass_.constructor.call(this,a);this.oldXml=Blockly.Xml.blockToDomWithXY(a);this.ids=Blockly.Events.getDescendantIds_(a)}};goog.inherits(Blockly.Events.Delete,Blockly.Events.Abstract);Blockly.Events.Delete.prototype.type=Blockly.Events.DELETE;Blockly.Events.Delete.prototype.toJson=function(){var a=Blockly.Events.Delete.superClass_.toJson.call(this);a.ids=this.ids;return a};
+Blockly.Events.Delete.prototype.fromJson=function(a){Blockly.Events.Delete.superClass_.fromJson.call(this,a);this.ids=a.ids};Blockly.Events.Delete.prototype.run=function(a){var b=Blockly.Workspace.getById(this.workspaceId);if(a){a=0;for(var c;c=this.ids[a];a++){var d=b.getBlockById(c);d?d.dispose(!1,!0):c==this.blockId&&console.warn("Can't delete non-existant block: "+c)}}else a=goog.dom.createDom("xml"),a.appendChild(this.oldXml),Blockly.Xml.domToWorkspace(a,b)};
+Blockly.Events.Change=function(a,b,c,d,e){a&&(Blockly.Events.Change.superClass_.constructor.call(this,a),this.element=b,this.name=c,this.oldValue=d,this.newValue=e)};goog.inherits(Blockly.Events.Change,Blockly.Events.Abstract);Blockly.Events.Change.prototype.type=Blockly.Events.CHANGE;Blockly.Events.Change.prototype.toJson=function(){var a=Blockly.Events.Change.superClass_.toJson.call(this);a.element=this.element;this.name&&(a.name=this.name);a.newValue=this.newValue;return a};
+Blockly.Events.Change.prototype.fromJson=function(a){Blockly.Events.Change.superClass_.fromJson.call(this,a);this.element=a.element;this.name=a.name;this.newValue=a.newValue};Blockly.Events.Change.prototype.isNull=function(){return this.oldValue==this.newValue};
+Blockly.Events.Change.prototype.run=function(a){var b=Blockly.Workspace.getById(this.workspaceId).getBlockById(this.blockId);if(b)switch(b.mutator&&b.mutator.setVisible(!1),a=a?this.newValue:this.oldValue,this.element){case "field":(b=b.getField(this.name))?b.setValue(a):console.warn("Can't set non-existant field: "+this.name);break;case "comment":b.setCommentText(a||null);break;case "collapsed":b.setCollapsed(a);break;case "disabled":b.setDisabled(a);break;case "inline":b.setInputsInline(a);break;
+case "mutation":var c="";b.mutationToDom&&(c=(c=b.mutationToDom())&&Blockly.Xml.domToText(c));if(b.domToMutation){a=a||"<mutation></mutation>";var d=Blockly.Xml.textToDom("<xml>"+a+"</xml>");b.domToMutation(d.firstChild)}Blockly.Events.fire(new Blockly.Events.Change(b,"mutation",null,c,a));break;default:console.warn("Unknown change type: "+this.element)}else console.warn("Can't change non-existant block: "+this.blockId)};
+Blockly.Events.Move=function(a){a&&(Blockly.Events.Move.superClass_.constructor.call(this,a),a=this.currentLocation_(),this.oldParentId=a.parentId,this.oldInputName=a.inputName,this.oldCoordinate=a.coordinate)};goog.inherits(Blockly.Events.Move,Blockly.Events.Abstract);Blockly.Events.Move.prototype.type=Blockly.Events.MOVE;
+Blockly.Events.Move.prototype.toJson=function(){var a=Blockly.Events.Move.superClass_.toJson.call(this);this.newParentId&&(a.newParentId=this.newParentId);this.newInputName&&(a.newInputName=this.newInputName);this.newCoordinate&&(a.newCoordinate=Math.round(this.newCoordinate.x)+","+Math.round(this.newCoordinate.y));return a};
+Blockly.Events.Move.prototype.fromJson=function(a){Blockly.Events.Move.superClass_.fromJson.call(this,a);this.newParentId=a.newParentId;this.newInputName=a.newInputName;a.newCoordinate&&(a=a.newCoordinate.split(","),this.newCoordinate=new goog.math.Coordinate(parseFloat(a[0]),parseFloat(a[1])))};Blockly.Events.Move.prototype.recordNew=function(){var a=this.currentLocation_();this.newParentId=a.parentId;this.newInputName=a.inputName;this.newCoordinate=a.coordinate};
+Blockly.Events.Move.prototype.currentLocation_=function(){var a=Blockly.Workspace.getById(this.workspaceId).getBlockById(this.blockId),b={},c=a.getParent();if(c){if(b.parentId=c.id,a=c.getInputWithBlock(a))b.inputName=a.name}else b.coordinate=a.getRelativeToSurfaceXY();return b};Blockly.Events.Move.prototype.isNull=function(){return this.oldParentId==this.newParentId&&this.oldInputName==this.newInputName&&goog.math.Coordinate.equals(this.oldCoordinate,this.newCoordinate)};
+Blockly.Events.Move.prototype.run=function(a){var b=Blockly.Workspace.getById(this.workspaceId),c=b.getBlockById(this.blockId);if(c){var d=a?this.newParentId:this.oldParentId,e=a?this.newInputName:this.oldInputName;a=a?this.newCoordinate:this.oldCoordinate;var f=null;if(d&&(f=b.getBlockById(d),!f)){console.warn("Can't connect to non-existant block: "+d);return}c.getParent()&&c.unplug();if(a)e=c.getRelativeToSurfaceXY(),c.moveBy(a.x-e.x,a.y-e.y);else{var c=c.outputConnection||c.previousConnection,
+g;if(e){if(b=f.getInput(e))g=b.connection}else c.type==Blockly.PREVIOUS_STATEMENT&&(g=f.nextConnection);g?c.connect(g):console.warn("Can't connect to non-existant input: "+e)}}else console.warn("Can't move non-existant block: "+this.blockId)};Blockly.Events.Ui=function(a,b,c,d){Blockly.Events.Ui.superClass_.constructor.call(this,a);this.element=b;this.oldValue=c;this.newValue=d;this.recordUndo=!1};goog.inherits(Blockly.Events.Ui,Blockly.Events.Abstract);Blockly.Events.Ui.prototype.type=Blockly.Events.UI;
+Blockly.Events.Ui.prototype.toJson=function(){var a=Blockly.Events.Ui.superClass_.toJson.call(this);a.element=this.element;void 0!==this.newValue&&(a.newValue=this.newValue);return a};Blockly.Events.Ui.prototype.fromJson=function(a){Blockly.Events.Ui.superClass_.fromJson.call(this,a);this.element=a.element;this.newValue=a.newValue};Blockly.Msg={};goog.getMsgOrig=goog.getMsg;goog.getMsg=function(a,b){var c=goog.getMsg.blocklyMsgMap[a];c&&(a=Blockly.Msg[c]);return goog.getMsgOrig(a,b)};goog.getMsg.blocklyMsgMap={Today:"TODAY"};Blockly.FieldTextInput=function(a,b){Blockly.FieldTextInput.superClass_.constructor.call(this,a,b)};goog.inherits(Blockly.FieldTextInput,Blockly.Field);Blockly.FieldTextInput.FONTSIZE=11;Blockly.FieldTextInput.prototype.CURSOR="text";Blockly.FieldTextInput.prototype.spellcheck_=!0;Blockly.FieldTextInput.prototype.dispose=function(){Blockly.WidgetDiv.hideIfOwner(this);Blockly.FieldTextInput.superClass_.dispose.call(this)};
 Blockly.FieldTextInput.prototype.setValue=function(a){if(null!==a){if(this.sourceBlock_&&this.validator_){var b=this.validator_(a);null!==b&&void 0!==b&&(a=b)}Blockly.Field.prototype.setValue.call(this,a)}};Blockly.FieldTextInput.prototype.setSpellcheck=function(a){this.spellcheck_=a};
 Blockly.FieldTextInput.prototype.showEditor_=function(a){this.workspace_=this.sourceBlock_.workspace;a=a||!1;if(!a&&(goog.userAgent.MOBILE||goog.userAgent.ANDROID||goog.userAgent.IPAD)){a=window.prompt(Blockly.Msg.CHANGE_VALUE_TITLE,this.text_);if(this.sourceBlock_&&this.validator_){var b=this.validator_(a);void 0!==b&&(a=b)}this.setValue(a)}else{Blockly.WidgetDiv.show(this,this.sourceBlock_.RTL,this.widgetDispose_());var b=Blockly.WidgetDiv.DIV,c=goog.dom.createDom("input","blocklyHtmlInput");c.setAttribute("spellcheck",
 this.spellcheck_);var d=Blockly.FieldTextInput.FONTSIZE*this.workspace_.scale+"pt";b.style.fontSize=d;c.style.fontSize=d;Blockly.FieldTextInput.htmlInput_=c;b.appendChild(c);c.value=c.defaultValue=this.text_;c.oldValue_=null;this.validate_();this.resizeEditor_();a||(c.focus(),c.select());c.onKeyDownWrapper_=Blockly.bindEvent_(c,"keydown",this,this.onHtmlInputKeyDown_);c.onKeyUpWrapper_=Blockly.bindEvent_(c,"keyup",this,this.onHtmlInputChange_);c.onKeyPressWrapper_=Blockly.bindEvent_(c,"keypress",
@@ -1225,7 +1235,7 @@ b,this.setValue(b),this.validate_(),this.resizeEditor_())};Blockly.FieldAngle.pr
 Blockly.FieldAngle.prototype.updateGraph_=function(){if(this.gauge_){var a=Number(this.getText())+Blockly.FieldAngle.OFFSET,b=goog.math.toRadians(a),a=["M ",Blockly.FieldAngle.HALF,",",Blockly.FieldAngle.HALF],c=Blockly.FieldAngle.HALF,d=Blockly.FieldAngle.HALF;if(!isNaN(b)){var e=goog.math.toRadians(Blockly.FieldAngle.OFFSET),f=Math.cos(e)*Blockly.FieldAngle.RADIUS,g=Math.sin(e)*-Blockly.FieldAngle.RADIUS;Blockly.FieldAngle.CLOCKWISE&&(b=2*e-b);c+=Math.cos(b)*Blockly.FieldAngle.RADIUS;d-=Math.sin(b)*
 Blockly.FieldAngle.RADIUS;b=Math.abs(Math.floor((b-e)/Math.PI)%2);Blockly.FieldAngle.CLOCKWISE&&(b=1-b);a.push(" l ",f,",",g," A ",Blockly.FieldAngle.RADIUS,",",Blockly.FieldAngle.RADIUS," 0 ",b," ",Number(Blockly.FieldAngle.CLOCKWISE)," ",c,",",d," z")}this.gauge_.setAttribute("d",a.join(""));this.line_.setAttribute("x2",c);this.line_.setAttribute("y2",d)}};
 Blockly.FieldAngle.angleValidator=function(a){a=Blockly.FieldTextInput.numberValidator(a);null!==a&&(a%=360,0>a&&(a+=360),a>Blockly.FieldAngle.WRAP&&(a-=360),a=String(a));return a};Blockly.FieldCheckbox=function(a,b){Blockly.FieldCheckbox.superClass_.constructor.call(this,"",b);this.setValue(a)};goog.inherits(Blockly.FieldCheckbox,Blockly.Field);Blockly.FieldCheckbox.CHECK_CHAR="\u2713";Blockly.FieldCheckbox.prototype.CURSOR="default";
-Blockly.FieldCheckbox.prototype.init=function(a){this.sourceBlock_||(Blockly.FieldCheckbox.superClass_.init.call(this,a),this.checkElement_=Blockly.createSvgElement("text",{"class":"blocklyText blocklyCheckbox",x:-3,y:14},this.fieldGroup_),a=document.createTextNode(Blockly.FieldCheckbox.CHECK_CHAR),this.checkElement_.appendChild(a),this.checkElement_.style.display=this.state_?"block":"none")};Blockly.FieldCheckbox.prototype.getValue=function(){return String(this.state_).toUpperCase()};
+Blockly.FieldCheckbox.prototype.init=function(a){this.fieldGroup_||(Blockly.FieldCheckbox.superClass_.init.call(this,a),this.checkElement_=Blockly.createSvgElement("text",{"class":"blocklyText blocklyCheckbox",x:-3,y:14},this.fieldGroup_),a=document.createTextNode(Blockly.FieldCheckbox.CHECK_CHAR),this.checkElement_.appendChild(a),this.checkElement_.style.display=this.state_?"block":"none")};Blockly.FieldCheckbox.prototype.getValue=function(){return String(this.state_).toUpperCase()};
 Blockly.FieldCheckbox.prototype.setValue=function(a){a="TRUE"==a;this.state_!==a&&(this.sourceBlock_&&Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Change(this.sourceBlock_,"field",this.name,this.state_,a)),this.state_=a,this.checkElement_&&(this.checkElement_.style.display=a?"block":"none"))};Blockly.FieldCheckbox.prototype.showEditor_=function(){var a=!this.state_;if(this.sourceBlock_&&this.validator_){var b=this.validator_(a);void 0!==b&&(a=b)}null!==a&&this.setValue(String(a).toUpperCase())};Blockly.FieldColour=function(a,b){Blockly.FieldColour.superClass_.constructor.call(this,a,b);this.setText(Blockly.Field.NBSP+Blockly.Field.NBSP+Blockly.Field.NBSP)};goog.inherits(Blockly.FieldColour,Blockly.Field);Blockly.FieldColour.prototype.colours_=null;Blockly.FieldColour.prototype.columns_=0;Blockly.FieldColour.prototype.init=function(a){Blockly.FieldColour.superClass_.init.call(this,a);this.borderRect_.style.fillOpacity=1;this.setValue(this.getValue())};
 Blockly.FieldColour.prototype.CURSOR="default";Blockly.FieldColour.prototype.dispose=function(){Blockly.WidgetDiv.hideIfOwner(this);Blockly.FieldColour.superClass_.dispose.call(this)};Blockly.FieldColour.prototype.getValue=function(){return this.colour_};
 Blockly.FieldColour.prototype.setValue=function(a){this.sourceBlock_&&Blockly.Events.isEnabled()&&this.colour_!=a&&Blockly.Events.fire(new Blockly.Events.Change(this.sourceBlock_,"field",this.name,this.colour_,a));this.colour_=a;this.borderRect_&&(this.borderRect_.style.fill=a)};Blockly.FieldColour.prototype.getText=function(){var a=this.colour_,b=a.match(/^#(.)\1(.)\2(.)\3$/);b&&(a="#"+b[1]+b[2]+b[3]);return a};Blockly.FieldColour.COLOURS=goog.ui.ColorPicker.SIMPLE_GRID_COLORS;
@@ -1233,7 +1243,7 @@ Blockly.FieldColour.COLUMNS=7;Blockly.FieldColour.prototype.setColours=function(
 Blockly.FieldColour.prototype.showEditor_=function(){Blockly.WidgetDiv.show(this,this.sourceBlock_.RTL,Blockly.FieldColour.widgetDispose_);var a=new goog.ui.ColorPicker;a.setSize(this.columns_||Blockly.FieldColour.COLUMNS);a.setColors(this.colours_||Blockly.FieldColour.COLOURS);var b=goog.dom.getViewportSize(),c=goog.style.getViewportPageOffset(document),d=this.getAbsoluteXY_(),e=this.getScaledBBox_();a.render(Blockly.WidgetDiv.DIV);a.setSelectedColor(this.getValue());var f=goog.style.getSize(a.getElement());
 d.y=d.y+f.height+e.height>=b.height+c.y?d.y-(f.height-1):d.y+(e.height-1);this.sourceBlock_.RTL?(d.x+=e.width,d.x-=f.width,d.x<c.x&&(d.x=c.x)):d.x>b.width+c.x-f.width&&(d.x=b.width+c.x-f.width);Blockly.WidgetDiv.position(d.x,d.y,b,c,this.sourceBlock_.RTL);var g=this;Blockly.FieldColour.changeEventKey_=goog.events.listen(a,goog.ui.ColorPicker.EventType.CHANGE,function(a){a=a.target.getSelectedColor()||"#000000";Blockly.WidgetDiv.hide();if(g.sourceBlock_&&g.validator_){var b=g.validator_(a);void 0!==
 b&&(a=b)}null!==a&&g.setValue(a)})};Blockly.FieldColour.widgetDispose_=function(){Blockly.FieldColour.changeEventKey_&&goog.events.unlistenByKey(Blockly.FieldColour.changeEventKey_)};Blockly.FieldDropdown=function(a,b){this.menuGenerator_=a;this.trimOptions_();var c=this.getOptions_()[0];Blockly.FieldDropdown.superClass_.constructor.call(this,c[1],b)};goog.inherits(Blockly.FieldDropdown,Blockly.Field);Blockly.FieldDropdown.CHECKMARK_OVERHANG=25;Blockly.FieldDropdown.ARROW_CHAR=goog.userAgent.ANDROID?"\u25bc":"\u25be";Blockly.FieldDropdown.prototype.CURSOR="default";
-Blockly.FieldDropdown.prototype.init=function(a){this.sourceBlock_||(this.arrow_=Blockly.createSvgElement("tspan",{},null),this.arrow_.appendChild(document.createTextNode(a.RTL?Blockly.FieldDropdown.ARROW_CHAR+" ":" "+Blockly.FieldDropdown.ARROW_CHAR)),Blockly.FieldDropdown.superClass_.init.call(this,a),a=this.text_,this.text_=null,this.setText(a))};
+Blockly.FieldDropdown.prototype.init=function(a){this.fieldGroup_||(this.arrow_=Blockly.createSvgElement("tspan",{},null),this.arrow_.appendChild(document.createTextNode(a.RTL?Blockly.FieldDropdown.ARROW_CHAR+" ":" "+Blockly.FieldDropdown.ARROW_CHAR)),Blockly.FieldDropdown.superClass_.init.call(this,a),a=this.text_,this.text_=null,this.setText(a))};
 Blockly.FieldDropdown.prototype.showEditor_=function(){Blockly.WidgetDiv.show(this,this.sourceBlock_.RTL,null);var a=this,b=new goog.ui.Menu;b.setRightToLeft(this.sourceBlock_.RTL);for(var c=this.getOptions_(),d=0;d<c.length;d++){var e=c[d][1],f=new goog.ui.MenuItem(c[d][0]);f.setRightToLeft(this.sourceBlock_.RTL);f.setValue(e);f.setCheckable(!0);b.addChild(f,!0);f.setChecked(e==this.value_)}goog.events.listen(b,goog.ui.Component.EventType.ACTION,function(b){if(b=b.target){b=b.getValue();if(a.sourceBlock_&&
 a.validator_){var c=a.validator_(b);void 0!==c&&(b=c)}null!==b&&a.setValue(b)}Blockly.WidgetDiv.hideIfOwner(a)});b.getHandler().listen(b.getElement(),goog.events.EventType.TOUCHSTART,function(a){this.getOwnerControl(a.target).handleMouseDown(a)});b.getHandler().listen(b.getElement(),goog.events.EventType.TOUCHEND,function(a){this.getOwnerControl(a.target).performActionInternal(a)});c=goog.dom.getViewportSize();d=goog.style.getViewportPageOffset(document);e=this.getAbsoluteXY_();f=this.getScaledBBox_();
 b.render(Blockly.WidgetDiv.DIV);var g=b.getElement();Blockly.addClass_(g,"blocklyDropdownMenu");var h=goog.style.getSize(g);h.height=g.scrollHeight;e.y=e.y+h.height+f.height>=c.height+d.y?e.y-(h.height+2):e.y+f.height;this.sourceBlock_.RTL?(e.x+=f.width,e.x+=Blockly.FieldDropdown.CHECKMARK_OVERHANG,e.x<d.x+h.width&&(e.x=d.x+h.width)):(e.x-=Blockly.FieldDropdown.CHECKMARK_OVERHANG,e.x>c.width+d.x-h.width&&(e.x=c.width+d.x-h.width));Blockly.WidgetDiv.position(e.x,e.y,c,d,this.sourceBlock_.RTL);b.setAllowAutoFocus(!0);
@@ -1243,14 +1253,14 @@ Blockly.FieldDropdown.prototype.getOptions_=function(){return goog.isFunction(th
 Blockly.FieldDropdown.prototype.setValue=function(a){if(null!==a&&a!==this.value_){this.sourceBlock_&&Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Change(this.sourceBlock_,"field",this.name,this.value_,a));this.value_=a;for(var b=this.getOptions_(),c=0;c<b.length;c++)if(b[c][1]==a){this.setText(b[c][0]);return}this.setText(a)}};
 Blockly.FieldDropdown.prototype.setText=function(a){this.sourceBlock_&&this.arrow_&&(this.arrow_.style.fill=this.sourceBlock_.getColour());null!==a&&a!==this.text_&&(this.text_=a,this.updateTextNode_(),this.textElement_&&(this.sourceBlock_.RTL?this.textElement_.insertBefore(this.arrow_,this.textElement_.firstChild):this.textElement_.appendChild(this.arrow_)),this.sourceBlock_&&this.sourceBlock_.rendered&&(this.sourceBlock_.render(),this.sourceBlock_.bumpNeighbours_()))};
 Blockly.FieldDropdown.prototype.dispose=function(){Blockly.WidgetDiv.hideIfOwner(this);Blockly.FieldDropdown.superClass_.dispose.call(this)};Blockly.FieldImage=function(a,b,c,d){this.sourceBlock_=null;this.height_=Number(c);this.width_=Number(b);this.size_=new goog.math.Size(this.width_,this.height_+2*Blockly.BlockSvg.INLINE_PADDING_Y);this.text_=d||"";this.setValue(a)};goog.inherits(Blockly.FieldImage,Blockly.Field);Blockly.FieldImage.prototype.rectElement_=null;Blockly.FieldImage.prototype.EDITABLE=!1;
-Blockly.FieldImage.prototype.init=function(a){this.sourceBlock_||(this.sourceBlock_=a,this.fieldGroup_=Blockly.createSvgElement("g",{},null),this.visible_||(this.fieldGroup_.style.display="none"),this.imageElement_=Blockly.createSvgElement("image",{height:this.height_+"px",width:this.width_+"px"},this.fieldGroup_),this.setValue(this.src_),goog.userAgent.GECKO&&(this.rectElement_=Blockly.createSvgElement("rect",{height:this.height_+"px",width:this.width_+"px","fill-opacity":0},this.fieldGroup_)),a.getSvgRoot().appendChild(this.fieldGroup_),
-a=this.rectElement_||this.imageElement_,a.tooltip=this.sourceBlock_,Blockly.Tooltip.bindMouseEvents(a))};Blockly.FieldImage.prototype.dispose=function(){goog.dom.removeNode(this.fieldGroup_);this.rectElement_=this.imageElement_=this.fieldGroup_=null};Blockly.FieldImage.prototype.setTooltip=function(a){(this.rectElement_||this.imageElement_).tooltip=a};Blockly.FieldImage.prototype.getValue=function(){return this.src_};
+Blockly.FieldImage.prototype.init=function(){if(!this.fieldGroup_){this.fieldGroup_=Blockly.createSvgElement("g",{},null);this.visible_||(this.fieldGroup_.style.display="none");this.imageElement_=Blockly.createSvgElement("image",{height:this.height_+"px",width:this.width_+"px"},this.fieldGroup_);this.setValue(this.src_);goog.userAgent.GECKO&&(this.rectElement_=Blockly.createSvgElement("rect",{height:this.height_+"px",width:this.width_+"px","fill-opacity":0},this.fieldGroup_));this.sourceBlock_.getSvgRoot().appendChild(this.fieldGroup_);
+var a=this.rectElement_||this.imageElement_;a.tooltip=this.sourceBlock_;Blockly.Tooltip.bindMouseEvents(a)}};Blockly.FieldImage.prototype.dispose=function(){goog.dom.removeNode(this.fieldGroup_);this.rectElement_=this.imageElement_=this.fieldGroup_=null};Blockly.FieldImage.prototype.setTooltip=function(a){(this.rectElement_||this.imageElement_).tooltip=a};Blockly.FieldImage.prototype.getValue=function(){return this.src_};
 Blockly.FieldImage.prototype.setValue=function(a){null!==a&&(this.src_=a,this.imageElement_&&this.imageElement_.setAttributeNS("http://www.w3.org/1999/xlink","xlink:href",goog.isString(a)?a:""))};Blockly.FieldImage.prototype.setText=function(a){null!==a&&(this.text_=a)};Blockly.FieldImage.prototype.render_=function(){};Blockly.Variables={};Blockly.Variables.NAME_TYPE="VARIABLE";Blockly.Variables.allVariables=function(a){var b;if(a.getDescendants)b=a.getDescendants();else if(a.getAllBlocks)b=a.getAllBlocks();else throw"Not Block or Workspace: "+a;a=Object.create(null);for(var c=0;c<b.length;c++)for(var d=b[c].getVars(),e=0;e<d.length;e++){var f=d[e];f&&(a[f.toLowerCase()]=f)}b=[];for(var g in a)b.push(a[g]);return b};
 Blockly.Variables.renameVariable=function(a,b,c){Blockly.Events.setGroup(!0);c=c.getAllBlocks();for(var d=0;d<c.length;d++)c[d].renameVar(a,b);Blockly.Events.setGroup(!1)};
 Blockly.Variables.flyoutCategory=function(a){a=Blockly.Variables.allVariables(a);a.sort(goog.string.caseInsensitiveCompare);goog.array.remove(a,Blockly.Msg.VARIABLES_DEFAULT_NAME);a.unshift(Blockly.Msg.VARIABLES_DEFAULT_NAME);for(var b=[],c=0;c<a.length;c++){if(Blockly.Blocks.variables_set){var d=goog.dom.createDom("block");d.setAttribute("type","variables_set");Blockly.Blocks.variables_get&&d.setAttribute("gap",8);var e=goog.dom.createDom("field",null,a[c]);e.setAttribute("name","VAR");d.appendChild(e);
 b.push(d)}Blockly.Blocks.variables_get&&(d=goog.dom.createDom("block"),d.setAttribute("type","variables_get"),Blockly.Blocks.variables_set&&d.setAttribute("gap",24),e=goog.dom.createDom("field",null,a[c]),e.setAttribute("name","VAR"),d.appendChild(e),b.push(d))}return b};
 Blockly.Variables.generateUniqueName=function(a){a=Blockly.Variables.allVariables(a);var b="";if(a.length)for(var c=1,d=0,e="ijkmnopqrstuvwxyzabcdefgh".charAt(d);!b;){for(var f=!1,g=0;g<a.length;g++)if(a[g].toLowerCase()==e){f=!0;break}f?(d++,25==d&&(d=0,c++),e="ijkmnopqrstuvwxyzabcdefgh".charAt(d),1<c&&(e+=c)):b=e}else b="i";return b};Blockly.FieldVariable=function(a,b){Blockly.FieldVariable.superClass_.constructor.call(this,Blockly.FieldVariable.dropdownCreate,b);this.setValue(a||"")};goog.inherits(Blockly.FieldVariable,Blockly.FieldDropdown);Blockly.FieldVariable.prototype.setValidator=function(a){Blockly.FieldVariable.superClass_.setValidator.call(this,a?function(b){var c=a.call(this,b);if(null===c)var d=c;else void 0===c&&(c=b),d=Blockly.FieldVariable.dropdownChange.call(this,c),void 0===d&&(d=c);return d===b?void 0:d}:Blockly.FieldVariable.dropdownChange)};
-Blockly.FieldVariable.prototype.init=function(a){this.sourceBlock_||(Blockly.FieldVariable.superClass_.init.call(this,a),this.getValue()||this.setValue(Blockly.Variables.generateUniqueName(a.isInFlyout?a.workspace.targetWorkspace:a.workspace)))};Blockly.FieldVariable.prototype.getValue=function(){return this.getText()};
+Blockly.FieldVariable.prototype.init=function(a){this.fieldGroup_||(Blockly.FieldVariable.superClass_.init.call(this,a),this.getValue()||this.setValue(Blockly.Variables.generateUniqueName(a.isInFlyout?a.workspace.targetWorkspace:a.workspace)))};Blockly.FieldVariable.prototype.getValue=function(){return this.getText()};
 Blockly.FieldVariable.prototype.setValue=function(a){this.sourceBlock_&&Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.Change(this.sourceBlock_,"field",this.name,this.value_,a));this.value_=a;this.setText(a)};
 Blockly.FieldVariable.dropdownCreate=function(){var a=this.sourceBlock_&&this.sourceBlock_.workspace?Blockly.Variables.allVariables(this.sourceBlock_.workspace):[],b=this.getText();b&&-1==a.indexOf(b)&&a.push(b);a.sort(goog.string.caseInsensitiveCompare);a.push(Blockly.Msg.RENAME_VARIABLE);a.push(Blockly.Msg.NEW_VARIABLE);for(var b=[],c=0;c<a.length;c++)b[c]=[a[c],a[c]];return b};
 Blockly.FieldVariable.dropdownChange=function(a){function b(a,b){Blockly.hideChaff();var c=window.prompt(a,b);c&&(c=c.replace(/[\s\xa0]+/g," ").replace(/^ | $/g,""),c==Blockly.Msg.RENAME_VARIABLE||c==Blockly.Msg.NEW_VARIABLE)&&(c=null);return c}var c=this.sourceBlock_.workspace;if(a==Blockly.Msg.RENAME_VARIABLE){var d=this.getText();(a=b(Blockly.Msg.RENAME_VARIABLE_TITLE.replace("%1",d),d))&&Blockly.Variables.renameVariable(d,a,c);return null}if(a==Blockly.Msg.NEW_VARIABLE)return(a=b(Blockly.Msg.NEW_VARIABLE_TITLE,
@@ -1282,7 +1292,7 @@ Blockly.Flyout.prototype.position=function(){if(this.isVisible()){var a=this.tar
 Blockly.Flyout.prototype.wheel_=function(a){var b=a.deltaY;if(b){goog.userAgent.GECKO&&(b*=10);var c=this.getMetrics_(),b=c.viewTop+b,b=Math.min(b,c.contentHeight-c.viewHeight),b=Math.max(b,0);this.scrollbar_.set(b);a.preventDefault();a.stopPropagation()}};Blockly.Flyout.prototype.isVisible=function(){return this.svgGroup_&&"block"==this.svgGroup_.style.display};
 Blockly.Flyout.prototype.hide=function(){if(this.isVisible()){this.svgGroup_.style.display="none";for(var a=0,b;b=this.listeners_[a];a++)Blockly.unbindEvent_(b);this.listeners_.length=0;this.reflowWrapper_&&(this.workspace_.removeChangeListener(this.reflowWrapper_),this.reflowWrapper_=null)}};
 Blockly.Flyout.prototype.show=function(a){this.hide();for(var b=this.workspace_.getTopBlocks(!1),c=0,d;d=b[c];c++)d.workspace==this.workspace_&&d.dispose(!1,!1);for(var c=0,e;e=this.buttons_[c];c++)goog.dom.removeNode(e);this.buttons_.length=0;a==Blockly.Variables.NAME_TYPE?a=Blockly.Variables.flyoutCategory(this.workspace_.targetWorkspace):a==Blockly.Procedures.NAME_TYPE&&(a=Blockly.Procedures.flyoutCategory(this.workspace_.targetWorkspace));var f=this.CORNER_RADIUS;this.svgGroup_.style.display=
-"block";for(var b=[],g=[],c=this.permanentlyDisabled_.length=0;e=a[c];c++)e.tagName&&"BLOCK"==e.tagName.toUpperCase()&&(d=Blockly.Xml.domToBlock(this.workspace_,e),d.disabled&&this.permanentlyDisabled_.push(d),b.push(d),d=parseInt(e.getAttribute("gap"),10),g.push(isNaN(d)?3*f:d));a=f;for(c=0;d=b[c];c++){e=d.getDescendants();for(var h=0,k;k=e[h];h++)k.isInFlyout=!0;d.render();h=d.getSvgRoot();e=d.getHeightWidth();d.moveBy(this.RTL?0:f/this.workspace_.scale+Blockly.BlockSvg.TAB_WIDTH,a);a+=e.height+
+"block";for(var b=[],g=[],c=this.permanentlyDisabled_.length=0;e=a[c];c++)e.tagName&&"BLOCK"==e.tagName.toUpperCase()&&(d=Blockly.Xml.domToBlock(e,this.workspace_),d.disabled&&this.permanentlyDisabled_.push(d),b.push(d),d=parseInt(e.getAttribute("gap"),10),g.push(isNaN(d)?3*f:d));a=f;for(c=0;d=b[c];c++){e=d.getDescendants();for(var h=0,k;k=e[h];h++)k.isInFlyout=!0;d.render();h=d.getSvgRoot();e=d.getHeightWidth();d.moveBy(this.RTL?0:f/this.workspace_.scale+Blockly.BlockSvg.TAB_WIDTH,a);a+=e.height+
 g[c];e=Blockly.createSvgElement("rect",{"fill-opacity":0},null);this.workspace_.getCanvas().insertBefore(e,d.getSvgRoot());d.flyoutRect_=e;this.buttons_[c]=e;this.autoClose?this.listeners_.push(Blockly.bindEvent_(h,"mousedown",null,this.createBlockFunc_(d))):this.listeners_.push(Blockly.bindEvent_(h,"mousedown",null,this.blockMouseDown_(d)));this.listeners_.push(Blockly.bindEvent_(h,"mouseover",d,d.addSelect));this.listeners_.push(Blockly.bindEvent_(h,"mouseout",d,d.removeSelect));this.listeners_.push(Blockly.bindEvent_(e,
 "mousedown",null,this.createBlockFunc_(d)));this.listeners_.push(Blockly.bindEvent_(e,"mouseover",d,d.addSelect));this.listeners_.push(Blockly.bindEvent_(e,"mouseout",d,d.removeSelect))}this.listeners_.push(Blockly.bindEvent_(this.svgBackground_,"mouseover",this,function(a){a=this.workspace_.getTopBlocks(!1);for(var b=0,c;c=a[b];b++)c.removeSelect()}));this.width_=0;this.reflow();this.filterForCapacity_();Blockly.fireUiEventNow(window,"resize");this.reflowWrapper_=this.reflow.bind(this);this.workspace_.addChangeListener(this.reflowWrapper_)};
 Blockly.Flyout.prototype.reflow=function(){this.workspace_.scale=this.targetWorkspace_.scale;for(var a=0,b=this.CORNER_RADIUS,c=this.workspace_.getTopBlocks(!1),d=0,e;e=c[d];d++){var f=e.getHeightWidth().width;e.outputConnection&&(f-=Blockly.BlockSvg.TAB_WIDTH);a=Math.max(a,f)}a+=Blockly.BlockSvg.TAB_WIDTH;a*=this.workspace_.scale;a+=1.5*b+Blockly.Scrollbar.scrollbarThickness;if(this.width_!=a){for(d=0;e=c[d];d++){f=e.getHeightWidth();if(this.RTL){var g=e.getRelativeToSurfaceXY().x,h=a-b,h=h/this.workspace_.scale,
@@ -1291,7 +1301,7 @@ Blockly.Flyout.prototype.blockMouseDown_=function(a){var b=this;return function(
 b.onMouseMoveBlock_));c.stopPropagation()}};Blockly.Flyout.prototype.onMouseDown_=function(a){Blockly.isRightButton(a)||(Blockly.hideChaff(!0),Blockly.Flyout.terminateDrag_(),this.startDragMouseY_=a.clientY,Blockly.Flyout.onMouseMoveWrapper_=Blockly.bindEvent_(document,"mousemove",this,this.onMouseMove_),Blockly.Flyout.onMouseUpWrapper_=Blockly.bindEvent_(document,"mouseup",this,Blockly.Flyout.terminateDrag_),a.preventDefault(),a.stopPropagation())};
 Blockly.Flyout.prototype.onMouseMove_=function(a){var b=a.clientY-this.startDragMouseY_;this.startDragMouseY_=a.clientY;a=this.getMetrics_();b=a.viewTop-b;b=Math.min(b,a.contentHeight-a.viewHeight);b=Math.max(b,0);this.scrollbar_.set(b)};
 Blockly.Flyout.prototype.onMouseMoveBlock_=function(a){if("mousemove"==a.type&&1>=a.clientX&&0==a.clientY&&0==a.button)a.stopPropagation();else{var b=a.clientX-Blockly.Flyout.startDownEvent_.clientX;a=a.clientY-Blockly.Flyout.startDownEvent_.clientY;Math.sqrt(b*b+a*a)>Blockly.DRAG_RADIUS&&Blockly.Flyout.startFlyout_.createBlockFunc_(Blockly.Flyout.startBlock_)(Blockly.Flyout.startDownEvent_)}};
-Blockly.Flyout.prototype.createBlockFunc_=function(a){var b=this,c=this.targetWorkspace_;return function(d){if(!Blockly.isRightButton(d)&&!a.disabled){Blockly.Events.disable();var e=Blockly.Xml.blockToDom(a),e=Blockly.Xml.domToBlock(c,e),f=a.getSvgRoot();if(!f)throw"originBlock is not rendered.";f=Blockly.getSvgXY_(f,c);if(b.RTL){var g=c.getMetrics().viewWidth-b.width_;f.x+=g/c.scale-g}else f.x+=b.workspace_.scrollX/b.workspace_.scale-b.workspace_.scrollX;f.y+=b.workspace_.scrollY/b.workspace_.scale-
+Blockly.Flyout.prototype.createBlockFunc_=function(a){var b=this,c=this.targetWorkspace_;return function(d){if(!Blockly.isRightButton(d)&&!a.disabled){Blockly.Events.disable();var e=Blockly.Xml.blockToDom(a),e=Blockly.Xml.domToBlock(e,c),f=a.getSvgRoot();if(!f)throw"originBlock is not rendered.";f=Blockly.getSvgXY_(f,c);if(b.RTL){var g=c.getMetrics().viewWidth-b.width_;f.x+=g/c.scale-g}else f.x+=b.workspace_.scrollX/b.workspace_.scale-b.workspace_.scrollX;f.y+=b.workspace_.scrollY/b.workspace_.scale-
 b.workspace_.scrollY;g=e.getSvgRoot();if(!g)throw"block is not rendered.";g=Blockly.getSvgXY_(g,c);g.x+=c.scrollX/c.scale-c.scrollX;g.y+=c.scrollY/c.scale-c.scrollY;c.toolbox_&&!c.scrollbar&&(g.x+=c.toolbox_.width/c.scale);e.moveBy(f.x-g.x,f.y-g.y);Blockly.Events.enable();Blockly.Events.isEnabled()&&(Blockly.Events.setGroup(!0),Blockly.Events.fire(new Blockly.Events.Create(e)));b.autoClose?b.hide():b.filterForCapacity_();e.onMouseDown_(d);Blockly.dragMode_=Blockly.DRAG_FREE;e.setDragging_(!0)}}};
 Blockly.Flyout.prototype.filterForCapacity_=function(){for(var a=this.targetWorkspace_.remainingCapacity(),b=this.workspace_.getTopBlocks(!1),c=0,d;d=b[c];c++)if(-1==this.permanentlyDisabled_.indexOf(d)){var e=d.getDescendants();d.setDisabled(e.length>a)}};Blockly.Flyout.prototype.getClientRect=function(){var a=this.svgGroup_.getBoundingClientRect();if(this.RTL){var b=a.left+a.width+1E9;return new goog.math.Rect(a.left,-1E9,b,2E9)}b=1E9+a.width+a.left;return new goog.math.Rect(-1E9,-1E9,b,2E9)};
 Blockly.Flyout.terminateDrag_=function(){Blockly.Flyout.onMouseUpWrapper_&&(Blockly.unbindEvent_(Blockly.Flyout.onMouseUpWrapper_),Blockly.Flyout.onMouseUpWrapper_=null);Blockly.Flyout.onMouseMoveBlockWrapper_&&(Blockly.unbindEvent_(Blockly.Flyout.onMouseMoveBlockWrapper_),Blockly.Flyout.onMouseMoveBlockWrapper_=null);Blockly.Flyout.onMouseMoveWrapper_&&(Blockly.unbindEvent_(Blockly.Flyout.onMouseMoveWrapper_),Blockly.Flyout.onMouseMoveWrapper_=null);Blockly.Flyout.onMouseUpWrapper_&&(Blockly.unbindEvent_(Blockly.Flyout.onMouseUpWrapper_),
@@ -1333,11 +1343,7 @@ Blockly.Css.CONTENT=[".blocklySvg {","background-color: #fff;","outline: none;",
 Blockly.WidgetDiv.show=function(a,b,c){Blockly.WidgetDiv.hide();Blockly.WidgetDiv.owner_=a;Blockly.WidgetDiv.dispose_=c;a=goog.style.getViewportPageOffset(document);Blockly.WidgetDiv.DIV.style.top=a.y+"px";Blockly.WidgetDiv.DIV.style.direction=b?"rtl":"ltr";Blockly.WidgetDiv.DIV.style.display="block";Blockly.Events.setGroup(!0)};
 Blockly.WidgetDiv.hide=function(){Blockly.WidgetDiv.owner_&&(Blockly.WidgetDiv.owner_=null,Blockly.WidgetDiv.DIV.style.display="none",Blockly.WidgetDiv.DIV.style.left="",Blockly.WidgetDiv.DIV.style.top="",Blockly.WidgetDiv.DIV.style.height="",Blockly.WidgetDiv.dispose_&&Blockly.WidgetDiv.dispose_(),Blockly.WidgetDiv.dispose_=null,goog.dom.removeChildren(Blockly.WidgetDiv.DIV),Blockly.Events.setGroup(!1))};Blockly.WidgetDiv.isVisible=function(){return!!Blockly.WidgetDiv.owner_};
 Blockly.WidgetDiv.hideIfOwner=function(a){Blockly.WidgetDiv.owner_==a&&Blockly.WidgetDiv.hide()};Blockly.WidgetDiv.position=function(a,b,c,d,e){b<d.y&&(b=d.y);e?a>c.width+d.x&&(a=c.width+d.x):a<d.x&&(a=d.x);Blockly.WidgetDiv.DIV.style.left=a+"px";Blockly.WidgetDiv.DIV.style.top=b+"px";Blockly.WidgetDiv.DIV.style.height=c.height-b+d.y+"px"};Blockly.constants={};Blockly.DRAG_RADIUS=5;Blockly.SNAP_RADIUS=20;Blockly.BUMP_DELAY=250;Blockly.COLLAPSE_CHARS=30;Blockly.LONGPRESS=750;Blockly.HSV_SATURATION=.45;Blockly.HSV_VALUE=.65;Blockly.SPRITE={width:96,height:124,url:"sprites.png"};Blockly.SVG_NS="http://www.w3.org/2000/svg";Blockly.HTML_NS="http://www.w3.org/1999/xhtml";Blockly.INPUT_VALUE=1;Blockly.OUTPUT_VALUE=2;Blockly.NEXT_STATEMENT=3;Blockly.PREVIOUS_STATEMENT=4;Blockly.DUMMY_INPUT=5;Blockly.ALIGN_LEFT=-1;Blockly.ALIGN_CENTRE=0;
-Blockly.ALIGN_RIGHT=1;Blockly.DRAG_NONE=0;Blockly.DRAG_STICKY=1;Blockly.DRAG_FREE=2;Blockly.OPPOSITE_TYPE=[];Blockly.OPPOSITE_TYPE[Blockly.INPUT_VALUE]=Blockly.OUTPUT_VALUE;Blockly.OPPOSITE_TYPE[Blockly.OUTPUT_VALUE]=Blockly.INPUT_VALUE;Blockly.OPPOSITE_TYPE[Blockly.NEXT_STATEMENT]=Blockly.PREVIOUS_STATEMENT;Blockly.OPPOSITE_TYPE[Blockly.PREVIOUS_STATEMENT]=Blockly.NEXT_STATEMENT;Blockly.Options=function(a){var b=!!a.readOnly;if(b)var c=null,d=!1,e=!1,f=!1,g=!1,h=!1,k=!1;else c=Blockly.Options.parseToolboxTree_(a.toolbox),d=!(!c||!c.getElementsByTagName("category").length),e=a.trashcan,void 0===e&&(e=d),f=a.collapse,void 0===f&&(f=d),g=a.comments,void 0===g&&(g=d),h=a.disable,void 0===h&&(h=d),k=a.sounds,void 0===k&&(k=!0);var l=a.scrollbars;void 0===l&&(l=d);var q=a.css;void 0===q&&(q=!0);var m="https://blockly-demo.appspot.com/static/media/";a.media?m=a.media:a.path&&(m=
-a.path+"media/");var p=!!a.realtime,n=p?a.realtimeOptions:void 0;this.RTL=!!a.rtl;this.collapse=f;this.comments=g;this.disable=h;this.readOnly=b;this.maxBlocks=a.maxBlocks||Infinity;this.pathToMedia=m;this.hasCategories=d;this.hasScrollbars=l;this.hasTrashcan=e;this.hasSounds=k;this.hasCss=q;this.languageTree=c;this.gridOptions=Blockly.Options.parseGridOptions_(a);this.zoomOptions=Blockly.Options.parseZoomOptions_(a);this.enableRealtime=p;this.realtimeOptions=n};
-Blockly.Options.prototype.parentWorkspace=null;Blockly.Options.prototype.setMetrics=function(a){};Blockly.Options.prototype.getMetrics=function(){return null};
-Blockly.Options.parseZoomOptions_=function(a){a=a.zoom||{};var b={};b.controls=void 0===a.controls?!1:!!a.controls;b.wheel=void 0===a.wheel?!1:!!a.wheel;b.startScale=void 0===a.startScale?1:parseFloat(a.startScale);b.maxScale=void 0===a.maxScale?3:parseFloat(a.maxScale);b.minScale=void 0===a.minScale?.3:parseFloat(a.minScale);b.scaleSpeed=void 0===a.scaleSpeed?1.2:parseFloat(a.scaleSpeed);return b};
-Blockly.Options.parseGridOptions_=function(a){a=a.grid||{};var b={};b.spacing=parseFloat(a.spacing)||0;b.colour=a.colour||"#888";b.length=parseFloat(a.length)||1;b.snap=0<b.spacing&&!!a.snap;return b};Blockly.Options.parseToolboxTree_=function(a){a?("string"!=typeof a&&("undefined"==typeof XSLTProcessor&&a.outerHTML?a=a.outerHTML:a instanceof Element||(a=null)),"string"==typeof a&&(a=Blockly.Xml.textToDom(a))):a=null;return a};Blockly.inject=function(a,b){goog.isString(a)&&(a=document.getElementById(a)||document.querySelector(a));if(!goog.dom.contains(document,a))throw"Error: container is not in current document.";var c=new Blockly.Options(b||{}),d=Blockly.createDom_(a,c),c=Blockly.createMainWorkspace_(d,c);Blockly.init_(c);c.markFocused();Blockly.bindEvent_(d,"focus",c,c.markFocused);return c};
+Blockly.ALIGN_RIGHT=1;Blockly.DRAG_NONE=0;Blockly.DRAG_STICKY=1;Blockly.DRAG_FREE=2;Blockly.OPPOSITE_TYPE=[];Blockly.OPPOSITE_TYPE[Blockly.INPUT_VALUE]=Blockly.OUTPUT_VALUE;Blockly.OPPOSITE_TYPE[Blockly.OUTPUT_VALUE]=Blockly.INPUT_VALUE;Blockly.OPPOSITE_TYPE[Blockly.NEXT_STATEMENT]=Blockly.PREVIOUS_STATEMENT;Blockly.OPPOSITE_TYPE[Blockly.PREVIOUS_STATEMENT]=Blockly.NEXT_STATEMENT;Blockly.inject=function(a,b){goog.isString(a)&&(a=document.getElementById(a)||document.querySelector(a));if(!goog.dom.contains(document,a))throw"Error: container is not in current document.";var c=new Blockly.Options(b||{}),d=Blockly.createDom_(a,c),c=Blockly.createMainWorkspace_(d,c);Blockly.init_(c);c.markFocused();Blockly.bindEvent_(d,"focus",c,c.markFocused);return c};
 Blockly.createDom_=function(a,b){a.setAttribute("dir","LTR");goog.ui.Component.setDefaultRightToLeft(b.RTL);Blockly.Css.inject(b.hasCss,b.pathToMedia);var c=Blockly.createSvgElement("svg",{xmlns:"http://www.w3.org/2000/svg","xmlns:html":"http://www.w3.org/1999/xhtml","xmlns:xlink":"http://www.w3.org/1999/xlink",version:"1.1","class":"blocklySvg"},a),d=Blockly.createSvgElement("defs",{},c),e=String(Math.random()).substring(2),f=Blockly.createSvgElement("filter",{id:"blocklyEmbossFilter"+e},d);Blockly.createSvgElement("feGaussianBlur",
 {"in":"SourceAlpha",stdDeviation:1,result:"blur"},f);var g=Blockly.createSvgElement("feSpecularLighting",{"in":"blur",surfaceScale:1,specularConstant:.5,specularExponent:10,"lighting-color":"white",result:"specOut"},f);Blockly.createSvgElement("fePointLight",{x:-5E3,y:-1E4,z:2E4},g);Blockly.createSvgElement("feComposite",{"in":"specOut",in2:"SourceAlpha",operator:"in",result:"specOut"},f);Blockly.createSvgElement("feComposite",{"in":"SourceGraphic",in2:"specOut",operator:"arithmetic",k1:0,k2:1,k3:1,
 k4:0},f);b.embossFilterId=f.id;f=Blockly.createSvgElement("pattern",{id:"blocklyDisabledPattern"+e,patternUnits:"userSpaceOnUse",width:10,height:10},d);Blockly.createSvgElement("rect",{width:10,height:10,fill:"#aaa"},f);Blockly.createSvgElement("path",{d:"M 0 0 L 10 10 M 10 0 L 0 10",stroke:"#cc0"},f);b.disabledPatternId=f.id;d=Blockly.createSvgElement("pattern",{id:"blocklyGridPattern"+e,patternUnits:"userSpaceOnUse"},d);0<b.gridOptions.length&&0<b.gridOptions.spacing&&(Blockly.createSvgElement("line",
@@ -1366,9 +1372,9 @@ Blockly.svgResize=function(a){for(;a.options.parentWorkspace;)a=a.options.parent
 Blockly.onMouseUp_=function(a){a=Blockly.getMainWorkspace();Blockly.Css.setCursor(Blockly.Css.Cursor.OPEN);a.isScrolling=!1;Blockly.setPageSelectable(!0);Blockly.onTouchUpWrapper_&&(Blockly.unbindEvent_(Blockly.onTouchUpWrapper_),Blockly.onTouchUpWrapper_=null);Blockly.onMouseMoveWrapper_&&(Blockly.unbindEvent_(Blockly.onMouseMoveWrapper_),Blockly.onMouseMoveWrapper_=null)};
 Blockly.onMouseMove_=function(a){if(!(a.touches&&2<=a.touches.length)){var b=Blockly.getMainWorkspace();if(b.isScrolling){var c=a.clientX-b.startDragMouseX,d=a.clientY-b.startDragMouseY,e=b.startDragMetrics,f=b.startScrollX+c,g=b.startScrollY+d,f=Math.min(f,-e.contentLeft),g=Math.min(g,-e.contentTop),f=Math.max(f,e.viewWidth-e.contentLeft-e.contentWidth),g=Math.max(g,e.viewHeight-e.contentTop-e.contentHeight);b.scrollbar.set(-f-e.contentLeft,-g-e.contentTop);Math.sqrt(c*c+d*d)>Blockly.DRAG_RADIUS&&
 Blockly.longStop_();a.stopPropagation()}}};
-Blockly.onKeyDown_=function(a){if(!Blockly.isTargetInput_(a)){var b=!1;if(27==a.keyCode)Blockly.hideChaff();else if(8==a.keyCode||46==a.keyCode)try{Blockly.selected&&Blockly.selected.isDeletable()&&(b=!0)}finally{a.preventDefault()}else if(a.altKey||a.ctrlKey||a.metaKey)Blockly.selected&&Blockly.selected.isDeletable()&&Blockly.selected.isMovable()&&(67==a.keyCode?(Blockly.hideChaff(),Blockly.copy_(Blockly.selected)):88==a.keyCode&&(Blockly.copy_(Blockly.selected),b=!0)),86==a.keyCode?Blockly.clipboardXml_&&
-Blockly.clipboardSource_.paste(Blockly.clipboardXml_):90==a.keyCode&&(Blockly.hideChaff(),Blockly.mainWorkspace.undo(a.shiftKey));b&&(Blockly.Events.setGroup(!0),Blockly.hideChaff(),Blockly.selected.dispose(Blockly.dragMode_!=Blockly.DRAG_FREE,!0),Blockly.highlightedConnection_&&(Blockly.highlightedConnection_.unhighlight(),Blockly.highlightedConnection_=null),Blockly.Events.setGroup(!1))}};Blockly.terminateDrag_=function(){Blockly.BlockSvg.terminateDrag_();Blockly.Flyout.terminateDrag_()};
-Blockly.longPid_=0;Blockly.longStart_=function(a,b){Blockly.longStop_();Blockly.longPid_=setTimeout(function(){a.button=2;b.onMouseDown_(a)},Blockly.LONGPRESS)};Blockly.longStop_=function(){Blockly.longPid_&&(clearTimeout(Blockly.longPid_),Blockly.longPid_=0)};
+Blockly.onKeyDown_=function(a){if(!Blockly.mainWorkspace.options.readOnly&&!Blockly.isTargetInput_(a)){var b=!1;if(27==a.keyCode)Blockly.hideChaff();else if(8==a.keyCode||46==a.keyCode)try{Blockly.selected&&Blockly.selected.isDeletable()&&(b=!0)}finally{a.preventDefault()}else if(a.altKey||a.ctrlKey||a.metaKey)Blockly.selected&&Blockly.selected.isDeletable()&&Blockly.selected.isMovable()&&(67==a.keyCode?(Blockly.hideChaff(),Blockly.copy_(Blockly.selected)):88==a.keyCode&&(Blockly.copy_(Blockly.selected),
+b=!0)),86==a.keyCode?Blockly.clipboardXml_&&Blockly.clipboardSource_.paste(Blockly.clipboardXml_):90==a.keyCode&&(Blockly.hideChaff(),Blockly.mainWorkspace.undo(a.shiftKey));b&&(Blockly.Events.setGroup(!0),Blockly.hideChaff(),Blockly.selected.dispose(Blockly.dragMode_!=Blockly.DRAG_FREE,!0),Blockly.highlightedConnection_&&(Blockly.highlightedConnection_.unhighlight(),Blockly.highlightedConnection_=null),Blockly.Events.setGroup(!1))}};
+Blockly.terminateDrag_=function(){Blockly.BlockSvg.terminateDrag_();Blockly.Flyout.terminateDrag_()};Blockly.longPid_=0;Blockly.longStart_=function(a,b){Blockly.longStop_();Blockly.longPid_=setTimeout(function(){a.button=2;b.onMouseDown_(a)},Blockly.LONGPRESS)};Blockly.longStop_=function(){Blockly.longPid_&&(clearTimeout(Blockly.longPid_),Blockly.longPid_=0)};
 Blockly.copy_=function(a){var b=Blockly.Xml.blockToDom(a);Blockly.dragMode_!=Blockly.DRAG_FREE&&Blockly.Xml.deleteNext(b);var c=a.getRelativeToSurfaceXY();b.setAttribute("x",a.RTL?-c.x:c.x);b.setAttribute("y",c.y);Blockly.clipboardXml_=b;Blockly.clipboardSource_=a.workspace};Blockly.duplicate_=function(a){var b=Blockly.clipboardXml_,c=Blockly.clipboardSource_;Blockly.copy_(a);a.workspace.paste(Blockly.clipboardXml_);Blockly.clipboardXml_=b;Blockly.clipboardSource_=c};
 Blockly.onContextMenu_=function(a){Blockly.isTargetInput_(a)||a.preventDefault()};Blockly.hideChaff=function(a){Blockly.Tooltip.hide();Blockly.WidgetDiv.hide();a||(a=Blockly.getMainWorkspace(),a.toolbox_&&a.toolbox_.flyout_&&a.toolbox_.flyout_.autoClose&&a.toolbox_.clearSelection())};
 Blockly.getMainWorkspaceMetrics_=function(){var a=Blockly.svgSize(this.getParentSvg());this.toolbox_&&(a.width-=this.toolbox_.width);var b=Blockly.Flyout.prototype.CORNER_RADIUS-1,c=a.width-b,d=a.height-b,e=this.getBlocksBoundingBox(),f=e.width*this.scale,g=e.height*this.scale,h=e.x*this.scale,k=e.y*this.scale;this.scrollbar?(b=Math.min(h-c/2,h+f-c),c=Math.max(h+f+c/2,h+c),f=Math.min(k-d/2,k+g-d),d=Math.max(k+g+d/2,k+d)):(b=e.x,c=b+e.width,f=e.y,d=f+e.height);e=0;!this.RTL&&this.toolbox_&&(e=this.toolbox_.width);
diff --git a/blockly_uncompressed.js b/blockly_uncompressed.js
index fc3a55af8..3b7f6e0ab 100644
--- a/blockly_uncompressed.js
+++ b/blockly_uncompressed.js
@@ -80,7 +80,7 @@ goog.addDependency("../../../" + dir + "/core/variables.js", ['Blockly.Variables
 goog.addDependency("../../../" + dir + "/core/warning.js", ['Blockly.Warning'], ['Blockly.Bubble', 'Blockly.Icon']);
 goog.addDependency("../../../" + dir + "/core/widgetdiv.js", ['Blockly.WidgetDiv'], ['Blockly.Css', 'goog.dom', 'goog.style']);
 goog.addDependency("../../../" + dir + "/core/workspace.js", ['Blockly.Workspace'], ['goog.math']);
-goog.addDependency("../../../" + dir + "/core/workspace_svg.js", ['Blockly.WorkspaceSvg'], ['Blockly.ConnectionDB', 'Blockly.ScrollbarPair', 'Blockly.Trashcan', 'Blockly.Workspace', 'Blockly.Xml', 'Blockly.ZoomControls', 'goog.dom', 'goog.math.Coordinate', 'goog.userAgent']);
+goog.addDependency("../../../" + dir + "/core/workspace_svg.js", ['Blockly.WorkspaceSvg'], ['Blockly.ConnectionDB', 'Blockly.Options', 'Blockly.ScrollbarPair', 'Blockly.Trashcan', 'Blockly.Workspace', 'Blockly.Xml', 'Blockly.ZoomControls', 'goog.dom', 'goog.math.Coordinate', 'goog.userAgent']);
 goog.addDependency("../../../" + dir + "/core/xml.js", ['Blockly.Xml'], ['goog.dom']);
 goog.addDependency("../../../" + dir + "/core/zoom_controls.js", ['Blockly.ZoomControls'], ['goog.dom']);
 goog.addDependency("../../alltests.js", [], []);
diff --git a/msg/js/ba.js b/msg/js/ba.js
index b93d82c89..8c6b00db1 100644
--- a/msg/js/ba.js
+++ b/msg/js/ba.js
@@ -316,9 +316,9 @@ Blockly.Msg.TEXT_CREATE_JOIN_TITLE_JOIN = "ҡушылығыҙ";
 Blockly.Msg.TEXT_CREATE_JOIN_TOOLTIP = "Add, remove, or reorder sections to reconfigure this text block.";  // untranslated
 Blockly.Msg.TEXT_GET_SUBSTRING_END_FROM_END = "to letter # from end";  // untranslated
 Blockly.Msg.TEXT_GET_SUBSTRING_END_FROM_START = "# хатҡа";
-Blockly.Msg.TEXT_GET_SUBSTRING_END_LAST = "to last letter";  // untranslated
+Blockly.Msg.TEXT_GET_SUBSTRING_END_LAST = "һуңғы хәрефкә тиклем";
 Blockly.Msg.TEXT_GET_SUBSTRING_HELPURL = "https://github.com/google/blockly/wiki/Text#extracting-a-region-of-text";  // untranslated
-Blockly.Msg.TEXT_GET_SUBSTRING_INPUT_IN_TEXT = "in text";  // untranslated
+Blockly.Msg.TEXT_GET_SUBSTRING_INPUT_IN_TEXT = "текста";
 Blockly.Msg.TEXT_GET_SUBSTRING_START_FIRST = "get substring from first letter";  // untranslated
 Blockly.Msg.TEXT_GET_SUBSTRING_START_FROM_END = "get substring from letter # from end";  // untranslated
 Blockly.Msg.TEXT_GET_SUBSTRING_START_FROM_START = "get substring from letter #";  // untranslated
@@ -326,7 +326,7 @@ Blockly.Msg.TEXT_GET_SUBSTRING_TAIL = "";  // untranslated
 Blockly.Msg.TEXT_GET_SUBSTRING_TOOLTIP = "Returns a specified portion of the text.";  // untranslated
 Blockly.Msg.TEXT_INDEXOF_HELPURL = "https://github.com/google/blockly/wiki/Text#finding-text";  // untranslated
 Blockly.Msg.TEXT_INDEXOF_INPUT_INTEXT = "текстҡа";
-Blockly.Msg.TEXT_INDEXOF_OPERATOR_FIRST = "find first occurrence of text";  // untranslated
+Blockly.Msg.TEXT_INDEXOF_OPERATOR_FIRST = "текстың тәүге инеүен табырға";
 Blockly.Msg.TEXT_INDEXOF_OPERATOR_LAST = "Текстың һуңғы инеүен табырға";
 Blockly.Msg.TEXT_INDEXOF_TAIL = "";  // untranslated
 Blockly.Msg.TEXT_INDEXOF_TOOLTIP = "Returns the index of the first/last occurrence of the first text in the second text. Returns 0 if text is not found.";  // untranslated