diff --git a/blockly_compressed.js b/blockly_compressed.js
index 95f15bb7b..2b8bd84c8 100644
--- a/blockly_compressed.js
+++ b/blockly_compressed.js
@@ -1346,141 +1346,4 @@ Blockly.WorkspaceSvg.prototype.zoom=function(a,b,c){var d=this.options.zoomOptio
 (1-d),b*(1-d)).scale(d),this.scrollX=a.e-e.absoluteLeft,this.scrollY=a.f-e.absoluteTop),this.setScale(c))};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.getMetrics(),b=this.getBlocksBoundingBox(),c=b.width;b=b.height;if(c){var d=a.viewWidth,e=a.viewHeight;this.flyout_&&(d-=this.flyout_.width_);this.scrollbar||(c+=a.contentLeft,b+=a.contentTop);this.setScale(Math.min(d/c,e/b));this.scrollCenter()}};Blockly.WorkspaceSvg.prototype.beginCanvasTransition=function(){Blockly.utils.addClass(this.svgBlockCanvas_,"blocklyCanvasTransitioning");Blockly.utils.addClass(this.svgBubbleCanvas_,"blocklyCanvasTransitioning")};
 Blockly.WorkspaceSvg.prototype.endCanvasTransition=function(){Blockly.utils.removeClass(this.svgBlockCanvas_,"blocklyCanvasTransitioning");Blockly.utils.removeClass(this.svgBubbleCanvas_,"blocklyCanvasTransitioning")};Blockly.WorkspaceSvg.prototype.scrollCenter=function(){if(this.scrollbar){var a=this.getMetrics(),b=(a.contentWidth-a.viewWidth)/2;this.flyout_&&(b-=this.flyout_.width_/2);this.scrollbar.set(b,(a.contentHeight-a.viewHeight)/2)}else console.warn("Tried to scroll a non-scrollable workspace.")};
-Blockly.WorkspaceSvg.prototype.centerOnBlock=function(a){if(this.scrollbar){if(a=this.getBlockById(a)){var b=a.getRelativeToSurfaceXY(),c=a.getHeightWidth(),d=this.scale;a=(b.x+(this.RTL?-1:1)*c.width/2)*d;b=(b.y+c.height/2)*d;c=this.getMetrics();a=a-c.contentLeft-c.viewWidth/2;b=b-c.contentTop-c.viewHeight/2;Blockly.hideChaff();this.scrollbar.set(a,b)}}else console.warn("Tried to scroll a non-scrollable workspace.")};
-Blockly.WorkspaceSvg.prototype.setScale=function(a){this.options.zoomOptions.maxScale&&a>this.options.zoomOptions.maxScale?a=this.options.zoomOptions.maxScale:this.options.zoomOptions.minScale&&a<this.options.zoomOptions.minScale&&(a=this.options.zoomOptions.minScale);this.scale=a;this.grid_&&this.grid_.update(this.scale);this.scrollbar?this.scrollbar.resize():this.translate(this.scrollX,this.scrollY);Blockly.hideChaff(!1);this.flyout_&&this.flyout_.reflow()};
-Blockly.WorkspaceSvg.getDimensionsPx_=function(a){var b=0,c=0;a&&(b=a.getWidth(),c=a.getHeight());return{width:b,height:c}};Blockly.WorkspaceSvg.getContentDimensions_=function(a,b){return a.scrollbar?Blockly.WorkspaceSvg.getContentDimensionsBounded_(a,b):Blockly.WorkspaceSvg.getContentDimensionsExact_(a)};
-Blockly.WorkspaceSvg.getContentDimensionsExact_=function(a){var b=a.getBlocksBoundingBox(),c=a.scale;a=b.width*c;var d=b.height*c,e=b.x*c;b=b.y*c;return{left:e,top:b,right:e+a,bottom:b+d,width:a,height:d}};
-Blockly.WorkspaceSvg.getContentDimensionsBounded_=function(a,b){var c=Blockly.WorkspaceSvg.getContentDimensionsExact_(a),d=b.width,e=b.height,f=d/2,g=e/2,h=Math.min(c.left-f,c.right-d),k=Math.min(c.top-g,c.bottom-e);return{left:h,top:k,height:Math.max(c.bottom+g,c.top+e)-k,width:Math.max(c.right+f,c.left+d)-h}};
-Blockly.WorkspaceSvg.getTopLevelWorkspaceMetrics_=function(){var a=Blockly.WorkspaceSvg.getDimensionsPx_(this.toolbox_),b=Blockly.WorkspaceSvg.getDimensionsPx_(this.flyout_),c=Blockly.svgSize(this.getParentSvg());if(this.toolbox_)if(this.toolboxPosition==Blockly.TOOLBOX_AT_TOP||this.toolboxPosition==Blockly.TOOLBOX_AT_BOTTOM)c.height-=a.height;else if(this.toolboxPosition==Blockly.TOOLBOX_AT_LEFT||this.toolboxPosition==Blockly.TOOLBOX_AT_RIGHT)c.width-=a.width;var d=Blockly.WorkspaceSvg.getContentDimensions_(this,
-c),e=0;this.toolbox_&&this.toolboxPosition==Blockly.TOOLBOX_AT_LEFT&&(e=a.width);var f=0;this.toolbox_&&this.toolboxPosition==Blockly.TOOLBOX_AT_TOP&&(f=a.height);return{contentHeight:d.height,contentWidth:d.width,contentTop:d.top,contentLeft:d.left,viewHeight:c.height,viewWidth:c.width,viewTop:-this.scrollY,viewLeft:-this.scrollX,absoluteTop:f,absoluteLeft:e,toolboxWidth:a.width,toolboxHeight:a.height,flyoutWidth:b.width,flyoutHeight:b.height,toolboxPosition:this.toolboxPosition}};
-Blockly.WorkspaceSvg.setTopLevelWorkspaceMetrics_=function(a){if(!this.scrollbar)throw Error("Attempt to set top level workspace scroll without scrollbars.");var b=this.getMetrics();"number"==typeof a.x&&(this.scrollX=-b.contentWidth*a.x-b.contentLeft);"number"==typeof a.y&&(this.scrollY=-b.contentHeight*a.y-b.contentTop);a=this.scrollX+b.absoluteLeft;b=this.scrollY+b.absoluteTop;this.translate(a,b);this.grid_&&this.grid_.moveTo(a,b)};
-Blockly.WorkspaceSvg.prototype.setResizesEnabled=function(a){var b=!this.resizesEnabled_&&a;this.resizesEnabled_=a;b&&this.resizeContents()};Blockly.WorkspaceSvg.prototype.clear=function(){this.setResizesEnabled(!1);Blockly.WorkspaceSvg.superClass_.clear.call(this);this.setResizesEnabled(!0)};Blockly.WorkspaceSvg.prototype.registerButtonCallback=function(a,b){if("function"!=typeof b)throw TypeError("Button callbacks must be functions.");this.flyoutButtonCallbacks_[a]=b};
-Blockly.WorkspaceSvg.prototype.getButtonCallback=function(a){return(a=this.flyoutButtonCallbacks_[a])?a:null};Blockly.WorkspaceSvg.prototype.removeButtonCallback=function(a){this.flyoutButtonCallbacks_[a]=null};Blockly.WorkspaceSvg.prototype.registerToolboxCategoryCallback=function(a,b){if("function"!=typeof b)throw TypeError("Toolbox category callbacks must be functions.");this.toolboxCategoryCallbacks_[a]=b};
-Blockly.WorkspaceSvg.prototype.getToolboxCategoryCallback=function(a){return(a=this.toolboxCategoryCallbacks_[a])?a:null};Blockly.WorkspaceSvg.prototype.removeToolboxCategoryCallback=function(a){this.toolboxCategoryCallbacks_[a]=null};
-Blockly.WorkspaceSvg.prototype.getGesture=function(a){var b="mousedown"==a.type||"touchstart"==a.type||"pointerdown"==a.type,c=this.currentGesture_;return c?b&&c.hasStarted()?(console.warn("tried to start the same gesture twice"),c.cancel(),null):c:b?this.currentGesture_=new Blockly.TouchGesture(a,this):null};Blockly.WorkspaceSvg.prototype.clearGesture=function(){this.currentGesture_=null};Blockly.WorkspaceSvg.prototype.cancelCurrentGesture=function(){this.currentGesture_&&this.currentGesture_.cancel()};
-Blockly.WorkspaceSvg.prototype.getAudioManager=function(){return this.audioManager_};Blockly.WorkspaceSvg.prototype.getGrid=function(){return this.grid_};Blockly.WorkspaceSvg.prototype.setVisible=Blockly.WorkspaceSvg.prototype.setVisible;Blockly.Mutator=function(a){Blockly.Mutator.superClass_.constructor.call(this,null);this.quarkNames_=a};goog.inherits(Blockly.Mutator,Blockly.Icon);Blockly.Mutator.prototype.workspaceWidth_=0;Blockly.Mutator.prototype.workspaceHeight_=0;
-Blockly.Mutator.prototype.drawIcon_=function(a){Blockly.utils.createSvgElement("rect",{"class":"blocklyIconShape",rx:"4",ry:"4",height:"16",width:"16"},a);Blockly.utils.createSvgElement("path",{"class":"blocklyIconSymbol",d:"m4.203,7.296 0,1.368 -0.92,0.677 -0.11,0.41 0.9,1.559 0.41,0.11 1.043,-0.457 1.187,0.683 0.127,1.134 0.3,0.3 1.8,0 0.3,-0.299 0.127,-1.138 1.185,-0.682 1.046,0.458 0.409,-0.11 0.9,-1.559 -0.11,-0.41 -0.92,-0.677 0,-1.366 0.92,-0.677 0.11,-0.41 -0.9,-1.559 -0.409,-0.109 -1.046,0.458 -1.185,-0.682 -0.127,-1.138 -0.3,-0.299 -1.8,0 -0.3,0.3 -0.126,1.135 -1.187,0.682 -1.043,-0.457 -0.41,0.11 -0.899,1.559 0.108,0.409z"},a);
-Blockly.utils.createSvgElement("circle",{"class":"blocklyIconShape",r:"2.7",cx:"8",cy:"8"},a)};Blockly.Mutator.prototype.iconClick_=function(a){this.block_.isEditable()&&Blockly.Icon.prototype.iconClick_.call(this,a)};
-Blockly.Mutator.prototype.createEditor_=function(){this.svgDialog_=Blockly.utils.createSvgElement("svg",{x:Blockly.Bubble.BORDER_WIDTH,y:Blockly.Bubble.BORDER_WIDTH},null);if(this.quarkNames_.length)for(var a=Blockly.Xml.utils.createElement("xml"),b=0,c;c=this.quarkNames_[b];b++){var d=Blockly.Xml.utils.createElement("block");d.setAttribute("type",c);a.appendChild(d)}else a=null;a={languageTree:a,parentWorkspace:this.block_.workspace,pathToMedia:this.block_.workspace.options.pathToMedia,RTL:this.block_.RTL,
-toolboxPosition:this.block_.RTL?Blockly.TOOLBOX_AT_RIGHT:Blockly.TOOLBOX_AT_LEFT,horizontalLayout:!1,getMetrics:this.getFlyoutMetrics_.bind(this),setMetrics:null};this.workspace_=new Blockly.WorkspaceSvg(a);this.workspace_.isMutator=!0;a=this.workspace_.addFlyout_("g");b=this.workspace_.createDom("blocklyMutatorBackground");b.insertBefore(a,this.workspace_.svgBlockCanvas_);this.svgDialog_.appendChild(b);return this.svgDialog_};
-Blockly.Mutator.prototype.updateEditable=function(){this.block_.isInFlyout||(this.block_.isEditable()?this.iconGroup_&&Blockly.utils.removeClass(this.iconGroup_,"blocklyIconGroupReadonly"):(this.setVisible(!1),this.iconGroup_&&Blockly.utils.addClass(this.iconGroup_,"blocklyIconGroupReadonly")));Blockly.Icon.prototype.updateEditable.call(this)};
-Blockly.Mutator.prototype.resizeBubble_=function(){var a=2*Blockly.Bubble.BORDER_WIDTH,b=this.workspace_.getCanvas().getBBox();var c=this.block_.RTL?-b.x:b.width+b.x;b=b.height+3*a;if(this.workspace_.flyout_){var d=this.workspace_.flyout_.getMetrics_();b=Math.max(b,d.contentHeight+20)}c+=3*a;if(Math.abs(this.workspaceWidth_-c)>a||Math.abs(this.workspaceHeight_-b)>a)this.workspaceWidth_=c,this.workspaceHeight_=b,this.bubble_.setBubbleSize(c+a,b+a),this.svgDialog_.setAttribute("width",this.workspaceWidth_),
-this.svgDialog_.setAttribute("height",this.workspaceHeight_);this.block_.RTL&&(a="translate("+this.workspaceWidth_+",0)",this.workspace_.getCanvas().setAttribute("transform",a));this.workspace_.resize()};
-Blockly.Mutator.prototype.setVisible=function(a){if(a!=this.isVisible())if(Blockly.Events.fire(new Blockly.Events.Ui(this.block_,"mutatorOpen",!a,a)),a){this.bubble_=new Blockly.Bubble(this.block_.workspace,this.createEditor_(),this.block_.svgPath_,this.iconXY_,null,null);this.bubble_.setSvgId(this.block_.id);if(a=this.workspace_.options.languageTree)this.workspace_.flyout_.init(this.workspace_),this.workspace_.flyout_.show(a.childNodes);this.rootBlock_=this.block_.decompose(this.workspace_);a=this.rootBlock_.getDescendants(!1);
-for(var b=0,c;c=a[b];b++)c.render();this.rootBlock_.setMovable(!1);this.rootBlock_.setDeletable(!1);this.workspace_.flyout_?(a=2*this.workspace_.flyout_.CORNER_RADIUS,b=this.workspace_.flyout_.width_+a):b=a=16;this.block_.RTL&&(b=-b);this.rootBlock_.moveBy(b,a);if(this.block_.saveConnections){var d=this;this.block_.saveConnections(this.rootBlock_);this.sourceListener_=function(){d.block_.saveConnections(d.rootBlock_)};this.block_.workspace.addChangeListener(this.sourceListener_)}this.resizeBubble_();
-this.workspace_.addChangeListener(this.workspaceChanged_.bind(this));this.updateColour()}else this.svgDialog_=null,this.workspace_.dispose(),this.rootBlock_=this.workspace_=null,this.bubble_.dispose(),this.bubble_=null,this.workspaceHeight_=this.workspaceWidth_=0,this.sourceListener_&&(this.block_.workspace.removeChangeListener(this.sourceListener_),this.sourceListener_=null)};
-Blockly.Mutator.prototype.workspaceChanged_=function(){if(!this.workspace_.isDragging())for(var a=this.workspace_.getTopBlocks(!1),b=0,c;c=a[b];b++){var d=c.getRelativeToSurfaceXY(),e=c.getHeightWidth();20>d.y+e.height&&c.moveBy(0,20-e.height-d.y)}if(this.rootBlock_.workspace==this.workspace_){Blockly.Events.setGroup(!0);c=this.block_;a=(a=c.mutationToDom())&&Blockly.Xml.domToText(a);b=c.rendered;c.rendered=!1;c.compose(this.rootBlock_);c.rendered=b;c.initSvg();b=(b=c.mutationToDom())&&Blockly.Xml.domToText(b);
-if(a!=b){Blockly.Events.fire(new Blockly.Events.BlockChange(c,"mutation",null,a,b));var f=Blockly.Events.getGroup();setTimeout(function(){Blockly.Events.setGroup(f);c.bumpNeighbours_();Blockly.Events.setGroup(!1)},Blockly.BUMP_DELAY)}c.rendered&&c.render();this.workspace_.isDragging()||this.resizeBubble_();Blockly.Events.setGroup(!1)}};Blockly.Mutator.prototype.getFlyoutMetrics_=function(){return{viewHeight:this.workspaceHeight_,viewWidth:this.workspaceWidth_,absoluteTop:0,absoluteLeft:0}};
-Blockly.Mutator.prototype.dispose=function(){this.block_.mutator=null;Blockly.Icon.prototype.dispose.call(this)};Blockly.Mutator.prototype.updateBlockStyle=function(){var a=this.workspace_;if(a&&a.getAllBlocks()){for(var b=a.getAllBlocks(),c=0;c<b.length;c++){var d=b[c];d.setStyle(d.getStyleName())}a=a.flyout_.workspace_.getAllBlocks();for(c=0;c<a.length;c++)d=a[c],d.setStyle(d.getStyleName())}};
-Blockly.Mutator.reconnect=function(a,b,c){if(!a||!a.getSourceBlock().workspace)return!1;c=b.getInput(c).connection;var d=a.targetBlock();return d&&d!=b||c.targetConnection==a?!1:(c.isConnected()&&c.disconnect(),c.connect(a),!0)};Blockly.Mutator.findParentWs=function(a){var b=null;if(a&&a.options){var c=a.options.parentWorkspace;a.isFlyout?c&&c.options&&(b=c.options.parentWorkspace):c&&(b=c)}return b};goog.global.Blockly||(goog.global.Blockly={});
-goog.global.Blockly.Mutator||(goog.global.Blockly.Mutator={});goog.global.Blockly.Mutator.reconnect=Blockly.Mutator.reconnect;Blockly.Extensions={};Blockly.Extensions.ALL_={};Blockly.Extensions.register=function(a,b){if("string"!=typeof a||""==a.trim())throw Error('Error: Invalid extension name "'+a+'"');if(Blockly.Extensions.ALL_[a])throw Error('Error: Extension "'+a+'" is already registered.');if("function"!=typeof b)throw Error('Error: Extension "'+a+'" must be a function');Blockly.Extensions.ALL_[a]=b};
-Blockly.Extensions.registerMixin=function(a,b){if(!b||"object"!=typeof b)throw Error('Error: Mixin "'+a+'" must be a object');Blockly.Extensions.register(a,function(){this.mixin(b)})};
-Blockly.Extensions.registerMutator=function(a,b,c,d){var e='Error when registering mutator "'+a+'": ';Blockly.Extensions.checkHasFunction_(e,b.domToMutation,"domToMutation");Blockly.Extensions.checkHasFunction_(e,b.mutationToDom,"mutationToDom");var f=Blockly.Extensions.checkMutatorDialog_(b,e);if(c&&"function"!=typeof c)throw Error('Extension "'+a+'" is not a function');Blockly.Extensions.register(a,function(){f&&this.setMutator(new Blockly.Mutator(d));this.mixin(b);c&&c.apply(this)})};
-Blockly.Extensions.apply=function(a,b,c){var d=Blockly.Extensions.ALL_[a];if("function"!=typeof d)throw Error('Error: Extension "'+a+'" not found.');if(c)Blockly.Extensions.checkNoMutatorProperties_(a,b);else var e=Blockly.Extensions.getMutatorProperties_(b);d.apply(b);if(c)Blockly.Extensions.checkBlockHasMutatorProperties_('Error after applying mutator "'+a+'": ',b);else if(!Blockly.Extensions.mutatorPropertiesMatch_(e,b))throw Error('Error when applying extension "'+a+'": mutation properties changed when applying a non-mutator extension.');
-};Blockly.Extensions.checkHasFunction_=function(a,b,c){if(!b)throw Error(a+'missing required property "'+c+'"');if("function"!=typeof b)throw Error(a+'" required property "'+c+'" must be a function');};Blockly.Extensions.checkNoMutatorProperties_=function(a,b){if(Blockly.Extensions.getMutatorProperties_(b).length)throw Error('Error: tried to apply mutation "'+a+'" to a block that already has mutator functions.  Block id: '+b.id);};
-Blockly.Extensions.checkMutatorDialog_=function(a,b){var c=void 0!==a.compose,d=void 0!==a.decompose;if(c&&d){if("function"!=typeof a.compose)throw Error(b+"compose must be a function.");if("function"!=typeof a.decompose)throw Error(b+"decompose must be a function.");return!0}if(c||d)throw Error(b+'Must have both or neither of "compose" and "decompose"');return!1};
-Blockly.Extensions.checkBlockHasMutatorProperties_=function(a,b){if("function"!=typeof b.domToMutation)throw Error(a+'Applying a mutator didn\'t add "domToMutation"');if("function"!=typeof b.mutationToDom)throw Error(a+'Applying a mutator didn\'t add "mutationToDom"');Blockly.Extensions.checkMutatorDialog_(b,a)};
-Blockly.Extensions.getMutatorProperties_=function(a){var b=[];void 0!==a.domToMutation&&b.push(a.domToMutation);void 0!==a.mutationToDom&&b.push(a.mutationToDom);void 0!==a.compose&&b.push(a.compose);void 0!==a.decompose&&b.push(a.decompose);return b};Blockly.Extensions.mutatorPropertiesMatch_=function(a,b){var c=Blockly.Extensions.getMutatorProperties_(b);if(c.length!=a.length)return!1;for(var d=0;d<c.length;d++)if(a[d]!=c[d])return!1;return!0};
-Blockly.Extensions.buildTooltipForDropdown=function(a,b){var c=[];"object"==typeof document&&Blockly.utils.runAfterPageLoad(function(){for(var a in b)Blockly.utils.checkMessageReferences(b[a])});return function(){this.type&&-1===c.indexOf(this.type)&&(Blockly.Extensions.checkDropdownOptionsInTable_(this,a,b),c.push(this.type));this.setTooltip(function(){var d=this.getFieldValue(a),e=b[d];null==e?-1===c.indexOf(this.type)&&(d="No tooltip mapping for value "+d+" of field "+a,null!=this.type&&(d+=" of block type "+
-this.type),console.warn(d+".")):e=Blockly.utils.replaceMessageReferences(e);return e}.bind(this))}};Blockly.Extensions.checkDropdownOptionsInTable_=function(a,b,c){var d=a.getField(b);if(!d.isOptionListDynamic()){d=d.getOptions();for(var e=0;e<d.length;++e){var f=d[e][1];null==c[f]&&console.warn("No tooltip mapping for value "+f+" of field "+b+" of block type "+a.type)}}};
-Blockly.Extensions.buildTooltipWithFieldText=function(a,b){"object"==typeof document&&Blockly.utils.runAfterPageLoad(function(){Blockly.utils.checkMessageReferences(a)});return function(){this.setTooltip(function(){var c=this.getField(b);return Blockly.utils.replaceMessageReferences(a).replace("%1",c?c.getText():"")}.bind(this))}};
-Blockly.Extensions.extensionParentTooltip_=function(){this.tooltipWhenNotConnected_=this.tooltip;this.setTooltip(function(){var a=this.getParent();return a&&a.getInputsInline()&&a.tooltip||this.tooltipWhenNotConnected_}.bind(this))};Blockly.Extensions.register("parent_tooltip_when_inline",Blockly.Extensions.extensionParentTooltip_);Blockly.Field=function(a,b){this.size_=new goog.math.Size(0,Blockly.BlockSvg.MIN_BLOCK_Y);this.setValue(a);this.setValidator(b)};Blockly.Field.TYPE_MAP_={};Blockly.Field.register=function(a,b){if("string"!=typeof a||""==a.trim())throw Error('Invalid field type "'+a+'"');if(!b||"function"!=typeof b.fromJson)throw Error('Field "'+b+'" must have a fromJson function');Blockly.Field.TYPE_MAP_[a]=b};Blockly.Field.fromJson=function(a){var b=Blockly.Field.TYPE_MAP_[a.type];return b?b.fromJson(a):null};
-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.setSourceBlock=function(a){if(this.sourceBlock_)throw Error("Field already bound to a block.");this.sourceBlock_=a};
-Blockly.Field.prototype.init=function(){this.fieldGroup_||(this.fieldGroup_=Blockly.utils.createSvgElement("g",{},null),this.visible_||(this.fieldGroup_.style.display="none"),this.borderRect_=Blockly.utils.createSvgElement("rect",{rx:4,ry:4,x:-Blockly.BlockSvg.SEP_SPACE_X/2,y:0,height:16},this.fieldGroup_),this.textElement_=Blockly.utils.createSvgElement("text",{"class":"blocklyText",y:this.size_.height-12.5},this.fieldGroup_),this.updateEditable(),this.sourceBlock_.getSvgRoot().appendChild(this.fieldGroup_),
-this.mouseDownWrapper_=Blockly.bindEventWithChecks_(this.fieldGroup_,"mousedown",this,this.onMouseDown_))};Blockly.Field.prototype.initModel=function(){};Blockly.Field.prototype.dispose=function(){this.mouseDownWrapper_&&(Blockly.unbindEvent_(this.mouseDownWrapper_),this.mouseDownWrapper_=null);this.sourceBlock_=null;this.fieldGroup_&&(Blockly.utils.removeNode(this.fieldGroup_),this.fieldGroup_=null);this.validator_=this.borderRect_=this.textElement_=null};
-Blockly.Field.prototype.updateEditable=function(){var a=this.fieldGroup_;this.EDITABLE&&a&&(this.sourceBlock_.isEditable()?(Blockly.utils.addClass(a,"blocklyEditableText"),Blockly.utils.removeClass(a,"blocklyNonEditableText"),this.fieldGroup_.style.cursor=this.CURSOR):(Blockly.utils.addClass(a,"blocklyNonEditableText"),Blockly.utils.removeClass(a,"blocklyEditableText"),this.fieldGroup_.style.cursor=""))};
-Blockly.Field.prototype.isCurrentlyEditable=function(){return this.EDITABLE&&!!this.sourceBlock_&&this.sourceBlock_.isEditable()};Blockly.Field.prototype.isVisible=function(){return this.visible_};Blockly.Field.prototype.setVisible=function(a){if(this.visible_!=a){this.visible_=a;var b=this.getSvgRoot();b&&(b.style.display=a?"block":"none",this.render_())}};Blockly.Field.prototype.setValidator=function(a){this.validator_=a};Blockly.Field.prototype.getValidator=function(){return this.validator_};
-Blockly.Field.prototype.classValidator=function(a){return a};Blockly.Field.prototype.callValidator=function(a){var b=this.classValidator(a);if(null===b)return null;void 0!==b&&(a=b);if(b=this.getValidator()){b=b.call(this,a);if(null===b)return null;void 0!==b&&(a=b)}return a};Blockly.Field.prototype.getSvgRoot=function(){return this.fieldGroup_};Blockly.Field.prototype.render_=function(){this.visible_?(this.textElement_.textContent=this.getDisplayText_(),this.updateWidth()):this.size_.width=0};
-Blockly.Field.prototype.updateWidth=function(){var a=Blockly.Field.getCachedWidth(this.textElement_);this.borderRect_&&this.borderRect_.setAttribute("width",a+Blockly.BlockSvg.SEP_SPACE_X);this.size_.width=a};
-Blockly.Field.getCachedWidth=function(a){var b=a.textContent+"\n"+a.className.baseVal,c;if(Blockly.Field.cacheWidths_&&(c=Blockly.Field.cacheWidths_[b]))return c;try{c=goog.userAgent.IE||goog.userAgent.EDGE?a.getBBox().width:a.getComputedTextLength()}catch(d){return 8*a.textContent.length}Blockly.Field.cacheWidths_&&(Blockly.Field.cacheWidths_[b]=c);return c};Blockly.Field.startCache=function(){Blockly.Field.cacheReference_++;Blockly.Field.cacheWidths_||(Blockly.Field.cacheWidths_={})};
-Blockly.Field.stopCache=function(){Blockly.Field.cacheReference_--;Blockly.Field.cacheReference_||(Blockly.Field.cacheWidths_=null)};Blockly.Field.prototype.getSize=function(){this.size_.width||this.render_();return this.size_};Blockly.Field.prototype.getScaledBBox_=function(){var a=this.borderRect_.getBBox(),b=a.height*this.sourceBlock_.workspace.scale;a=a.width*this.sourceBlock_.workspace.scale;var c=this.getAbsoluteXY_();return{top:c.y,bottom:c.y+b,left:c.x,right:c.x+a}};
-Blockly.Field.prototype.getDisplayText_=function(){var a=this.text_;if(!a)return Blockly.Field.NBSP;a.length>this.maxDisplayLength&&(a=a.substring(0,this.maxDisplayLength-2)+"\u2026");a=a.replace(/\s/g,Blockly.Field.NBSP);this.sourceBlock_.RTL&&(a+="\u200f");return a};Blockly.Field.prototype.getText=function(){return this.text_};Blockly.Field.prototype.setText=function(a){null!==a&&(a=String(a),a!==this.text_&&(this.text_=a,this.forceRerender()))};
-Blockly.Field.prototype.forceRerender=function(){this.size_.width=0;this.sourceBlock_&&this.sourceBlock_.rendered&&(this.sourceBlock_.render(),this.sourceBlock_.bumpNeighbours_())};Blockly.Field.prototype.getValue=function(){return this.getText()};Blockly.Field.prototype.setValue=function(a){if(null!==a){var b=this.getValue();b!=a&&(this.sourceBlock_&&Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.BlockChange(this.sourceBlock_,"field",this.name,b,a)),this.setText(a))}};
-Blockly.Field.prototype.onMouseDown_=function(a){this.sourceBlock_&&this.sourceBlock_.workspace&&(a=this.sourceBlock_.workspace.getGesture(a))&&a.setStartField(this)};Blockly.Field.prototype.setTooltip=function(a){};Blockly.Field.prototype.getAbsoluteXY_=function(){return goog.style.getPageOffset(this.borderRect_)};Blockly.Field.prototype.referencesVariables=function(){return!1};Blockly.FieldLabel=function(a,b){this.size_=new goog.math.Size(0,17.5);this.class_=b;this.setValue(a);this.tooltip_=""};goog.inherits(Blockly.FieldLabel,Blockly.Field);Blockly.FieldLabel.fromJson=function(a){var b=Blockly.utils.replaceMessageReferences(a.text);return new Blockly.FieldLabel(b,a["class"])};Blockly.FieldLabel.prototype.EDITABLE=!1;
-Blockly.FieldLabel.prototype.init=function(){this.textElement_||(this.textElement_=Blockly.utils.createSvgElement("text",{"class":"blocklyText",y:this.size_.height-5},null),this.class_&&Blockly.utils.addClass(this.textElement_,this.class_),this.visible_||(this.textElement_.style.display="none"),this.sourceBlock_.getSvgRoot().appendChild(this.textElement_),this.textElement_.tooltip=this.tooltip_?this.tooltip_:this.sourceBlock_,Blockly.Tooltip.bindMouseEvents(this.textElement_),this.render_())};
-Blockly.FieldLabel.prototype.dispose=function(){this.textElement_&&(Blockly.utils.removeNode(this.textElement_),this.textElement_=null)};Blockly.FieldLabel.prototype.getSvgRoot=function(){return this.textElement_};Blockly.FieldLabel.prototype.setTooltip=function(a){this.tooltip_=a;this.textElement_&&(this.textElement_.tooltip=a)};Blockly.Field.register("field_label",Blockly.FieldLabel);Blockly.Input=function(a,b,c,d){if(a!=Blockly.DUMMY_INPUT&&!b)throw Error("Value inputs and statement inputs must have non-empty name.");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){this.insertFieldAt(this.fieldRow.length,a,b);return this};
-Blockly.Input.prototype.insertFieldAt=function(a,b,c){if(0>a||a>this.fieldRow.length)throw Error("index "+a+" out of bounds.");if(!b&&!c)return a;"string"==typeof b&&(b=new Blockly.FieldLabel(b));b.setSourceBlock(this.sourceBlock_);this.sourceBlock_.rendered&&b.init();b.name=c;b.prefixField&&(a=this.insertFieldAt(a,b.prefixField));this.fieldRow.splice(a,0,b);++a;b.suffixField&&(a=this.insertFieldAt(a,b.suffixField));this.sourceBlock_.rendered&&(this.sourceBlock_.render(),this.sourceBlock_.bumpNeighbours_());
-return a};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}throw Error('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 Error("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()};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.Warning=function(a){Blockly.Warning.superClass_.constructor.call(this,a);this.createIcon();this.text_={}};goog.inherits(Blockly.Warning,Blockly.Icon);Blockly.Warning.prototype.collapseHidden=!1;
-Blockly.Warning.prototype.drawIcon_=function(a){Blockly.utils.createSvgElement("path",{"class":"blocklyIconShape",d:"M2,15Q-1,15 0.5,12L6.5,1.7Q8,-1 9.5,1.7L15.5,12Q17,15 14,15z"},a);Blockly.utils.createSvgElement("path",{"class":"blocklyIconSymbol",d:"m7,4.8v3.16l0.27,2.27h1.46l0.27,-2.27v-3.16z"},a);Blockly.utils.createSvgElement("rect",{"class":"blocklyIconSymbol",x:"7",y:"11",height:"2",width:"2"},a)};
-Blockly.Warning.textToDom_=function(a){var b=Blockly.utils.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.utils.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.iconXY_,null,null);this.bubble_.setSvgId(this.block_.id);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){if("undefined"!==typeof Blockly.Generator.prototype[b])throw Error('Block prototypeName "'+b+'" conflicts with Blockly.Generator members.');this.id=c&&!a.getBlockById(c)?c:Blockly.utils.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.isInMutator=a.isMutator;this.RTL=a.RTL;this.isInsertionMarker_=!1;this.hat=void 0;if(b){this.type=b;c=Blockly.Blocks[b];if(!c||"object"!=typeof c)throw TypeError("Unknown block type: "+b);goog.mixin(this,c)}a.addTopBlock(this);a.addTypedBlock(this);"function"==typeof this.init&&this.init();this.inputsInlineDefault=this.inputsInline;if(Blockly.Events.isEnabled()){(a=
-Blockly.Events.getGroup())||Blockly.Events.setGroup(!0);try{Blockly.Events.fire(new Blockly.Events.BlockCreate(this))}finally{a||Blockly.Events.setGroup(!1)}}"function"==typeof this.onchange&&this.setOnChange(this.onchange)};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.hue_=null;Blockly.Block.prototype.colour_="#000000";
-Blockly.Block.prototype.colourSecondary_=null;Blockly.Block.prototype.colourTertiary_=null;Blockly.Block.prototype.styleName_=null;
-Blockly.Block.prototype.dispose=function(a){if(this.workspace){this.onchangeWrapper_&&this.workspace.removeChangeListener(this.onchangeWrapper_);this.unplug(a);Blockly.Events.isEnabled()&&Blockly.Events.fire(new Blockly.Events.BlockDelete(this));Blockly.Events.disable();try{this.workspace&&(this.workspace.removeTopBlock(this),this.workspace.removeTypedBlock(this),delete this.workspace.blockDB_[this.id],this.workspace=null);Blockly.selected==this&&(Blockly.selected=null);for(var b=this.childBlocks_.length-
-1;0<=b;b--)this.childBlocks_[b].dispose(!1);b=0;for(var c;c=this.inputList[b];b++)c.dispose();this.inputList.length=0;var d=this.getConnections_(!0);for(b=0;b<d.length;b++){var e=d[b];e.isConnected()&&e.disconnect();d[b].dispose()}}finally{Blockly.Events.enable()}}};Blockly.Block.prototype.initModel=function(){for(var a=0,b;b=this.inputList[a];a++)for(var c=0,d;d=b.fieldRow[c];c++)d.initModel&&d.initModel()};
-Blockly.Block.prototype.unplug=function(a){this.outputConnection?this.unplugFromRow_(a):this.previousConnection&&this.unplugFromStack_(a)};Blockly.Block.prototype.unplugFromRow_=function(a){var b=null;this.outputConnection.isConnected()&&(b=this.outputConnection.targetConnection,this.outputConnection.disconnect());b&&a&&(a=this.getOnlyValueConnection_())&&a.isConnected()&&!a.targetBlock().isShadow()&&(a=a.targetConnection,a.checkType_(b)&&(a.disconnect(),b.connect(a)))};
-Blockly.Block.prototype.getOnlyValueConnection_=function(){for(var a=null,b=0;b<this.inputList.length;b++){var c=this.inputList[b].connection;if(c&&c.type==Blockly.INPUT_VALUE){if(a)return null;a=c}}return a};
-Blockly.Block.prototype.unplugFromStack_=function(a){var b=null;this.previousConnection.isConnected()&&(b=this.previousConnection.targetConnection,this.previousConnection.disconnect());var c=this.getNextBlock();a&&c&&!c.isShadow()&&(a=this.nextConnection.targetConnection,a.disconnect(),b&&b.checkType_(a)&&b.connect(a))};
-Blockly.Block.prototype.getConnections_=function(a){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(){console.warn("Not expected to reach this bumpNeighbours_ function. The BlockSvg function for bumpNeighbours_ was expected to be called instead.")};
-Blockly.Block.prototype.getParent=function(){return this.parentBlock_};Blockly.Block.prototype.getInputWithBlock=function(a){for(var b=0,c;c=this.inputList[b];b++)if(c.connection&&c.connection.targetBlock()==a)return c;return null};Blockly.Block.prototype.getSurroundParent=function(){var a=this;do{var b=a;a=a.getParent();if(!a)return null}while(a.getNextBlock()==b);return a};Blockly.Block.prototype.getNextBlock=function(){return this.nextConnection&&this.nextConnection.targetBlock()};
-Blockly.Block.prototype.getPreviousBlock=function(){return this.previousConnection&&this.previousConnection.targetBlock()};Blockly.Block.prototype.getFirstStatementConnection=function(){for(var a=0,b;b=this.inputList[a];a++)if(b.connection&&b.connection.type==Blockly.NEXT_STATEMENT)return b.connection;return null};Blockly.Block.prototype.getRootBlock=function(){var a=this;do{var b=a;a=b.parentBlock_}while(a);return b};
-Blockly.Block.prototype.getChildren=function(a){if(!a)return this.childBlocks_;a=[];for(var b=0,c;c=this.inputList[b];b++)c.connection&&(c=c.connection.targetBlock())&&a.push(c);(b=this.getNextBlock())&&a.push(b);return a};
-Blockly.Block.prototype.setParent=function(a){if(a!=this.parentBlock_){if(this.parentBlock_){Blockly.utils.arrayRemove(this.parentBlock_.childBlocks_,this);if(this.previousConnection&&this.previousConnection.isConnected())throw Error("Still connected to previous block.");if(this.outputConnection&&this.outputConnection.isConnected())throw Error("Still connected to parent block.");this.parentBlock_=null}else this.workspace.removeTopBlock(this);(this.parentBlock_=a)?a.childBlocks_.push(this):this.workspace.addTopBlock(this)}};
-Blockly.Block.prototype.getDescendants=function(a){for(var b=[this],c=this.getChildren(a),d,e=0;d=c[e];e++)b.push.apply(b,d.getDescendants(a));return b};Blockly.Block.prototype.isDeletable=function(){return this.deletable_&&!this.isShadow_&&!(this.workspace&&this.workspace.options.readOnly)};Blockly.Block.prototype.setDeletable=function(a){this.deletable_=a};Blockly.Block.prototype.isMovable=function(){return this.movable_&&!this.isShadow_&&!(this.workspace&&this.workspace.options.readOnly)};
-Blockly.Block.prototype.setMovable=function(a){this.movable_=a};Blockly.Block.prototype.isDuplicatable=function(){return this.workspace.hasBlockLimits()?this.workspace.isCapacityAvailable(Blockly.utils.getBlockTypeCounts(this,!0)):!0};Blockly.Block.prototype.isShadow=function(){return this.isShadow_};Blockly.Block.prototype.setShadow=function(a){this.isShadow_=a};Blockly.Block.prototype.isInsertionMarker=function(){return this.isInsertionMarker_};
-Blockly.Block.prototype.setInsertionMarker=function(a){this.isInsertionMarker_=a};Blockly.Block.prototype.isEditable=function(){return this.editable_&&!(this.workspace&&this.workspace.options.readOnly)};Blockly.Block.prototype.setEditable=function(a){this.editable_=a;a=0;for(var b;b=this.inputList[a];a++)for(var c=0,d;d=b.fieldRow[c];c++)d.updateEditable()};
-Blockly.Block.prototype.setConnectionsHidden=function(a){if(!a&&this.isCollapsed()){if(this.outputConnection&&this.outputConnection.setHidden(a),this.previousConnection&&this.previousConnection.setHidden(a),this.nextConnection){this.nextConnection.setHidden(a);var b=this.nextConnection.targetBlock();b&&b.setConnectionsHidden(a)}}else for(var c=this.getConnections_(!0),d=0;b=c[d];d++)b.setHidden(a),b.isSuperior()&&(b=b.targetBlock())&&b.setConnectionsHidden(a)};
-Blockly.Block.prototype.getMatchingConnection=function(a,b){var c=this.getConnections_(!0),d=a.getConnections_(!0);if(c.length!=d.length)throw Error("Connection lists did not match in length.");for(var e=0;e<d.length;e++)if(d[e]==b)return c[e];return null};Blockly.Block.prototype.setHelpUrl=function(a){this.helpUrl=a};Blockly.Block.prototype.setTooltip=function(a){this.tooltip=a};Blockly.Block.prototype.getColour=function(){return this.colour_};Blockly.Block.prototype.getColourSecondary=function(){return this.colourSecondary_};
-Blockly.Block.prototype.getColourTertiary=function(){return this.colourTertiary_};Blockly.Block.prototype.getStyleName=function(){return this.styleName_};Blockly.Block.prototype.getHue=function(){return this.hue_};
-Blockly.Block.prototype.setColour=function(a){var b="string"==typeof a?Blockly.utils.replaceMessageReferences(a):a,c=Number(b);if(!isNaN(c)&&0<=c&&360>=c)this.hue_=c,this.colour_=Blockly.hueToRgb(c);else if("string"==typeof b&&/^#[0-9a-fA-F]{6}$/.test(b))this.colour_=b,this.hue_=null;else throw c='Invalid colour: "'+b+'"',a!=b&&(c+=' (from "'+a+'")'),c;};
-Blockly.Block.prototype.setStyle=function(a){var b=Blockly.getTheme();if(!b)throw Error("Trying to set block style to "+a+" before theme was defined via Blockly.setTheme().");b=b.getBlockStyle(a);this.styleName_=a;if(b)this.colourSecondary_=b.colourSecondary,this.colourTertiary_=b.colourTertiary,this.hat=b.hat,this.setColour(b.colourPrimary);else throw Error("Invalid style name: "+a);};
-Blockly.Block.prototype.setOnChange=function(a){if(a&&"function"!=typeof a)throw Error("onchange must be a function.");this.onchangeWrapper_&&this.workspace.removeChangeListener(this.onchangeWrapper_);if(this.onchange=a)this.onchangeWrapper_=a.bind(this),this.workspace.addChangeListener(this.onchangeWrapper_)};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.referencesVariables()&&a.push(e.getValue());return a};Blockly.Block.prototype.getVarModels=function(){for(var a=[],b=0,c;c=this.inputList[b];b++)for(var d=0,e;e=c.fieldRow[d];d++)e.referencesVariables()&&(e=this.workspace.getVariableById(e.getValue()))&&a.push(e);return a};
-Blockly.Block.prototype.updateVarName=function(a){for(var b=0,c;c=this.inputList[b];b++)for(var d=0,e;e=c.fieldRow[d];d++)e.referencesVariables()&&a.getId()==e.getValue()&&e.setText(a.name)};Blockly.Block.prototype.renameVarById=function(a,b){for(var c=0,d;d=this.inputList[c];c++)for(var e=0,f;f=d.fieldRow[e];e++)f.referencesVariables()&&a==f.getValue()&&f.setValue(b)};Blockly.Block.prototype.getFieldValue=function(a){return(a=this.getField(a))?a.getValue():null};
-Blockly.Block.prototype.setFieldValue=function(a,b){var c=this.getField(b);if(!c)throw Error('Field "'+b+'" not found.');c.setValue(a)};
-Blockly.Block.prototype.setPreviousStatement=function(a,b){if(a){void 0===b&&(b=null);if(!this.previousConnection){if(this.outputConnection)throw Error("Remove output connection prior to adding previous connection.");this.previousConnection=this.makeConnection_(Blockly.PREVIOUS_STATEMENT)}this.previousConnection.setCheck(b)}else if(this.previousConnection){if(this.previousConnection.isConnected())throw Error("Must disconnect previous statement before removing connection.");this.previousConnection.dispose();
-this.previousConnection=null}};Blockly.Block.prototype.setNextStatement=function(a,b){if(a)void 0===b&&(b=null),this.nextConnection||(this.nextConnection=this.makeConnection_(Blockly.NEXT_STATEMENT)),this.nextConnection.setCheck(b);else if(this.nextConnection){if(this.nextConnection.isConnected())throw Error("Must disconnect next statement before removing connection.");this.nextConnection.dispose();this.nextConnection=null}};
-Blockly.Block.prototype.setOutput=function(a,b){if(a){void 0===b&&(b=null);if(!this.outputConnection){if(this.previousConnection)throw Error("Remove previous connection prior to adding output connection.");this.outputConnection=this.makeConnection_(Blockly.OUTPUT_VALUE)}this.outputConnection.setCheck(b)}else if(this.outputConnection){if(this.outputConnection.isConnected())throw Error("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.BlockChange(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.BlockChange(this,"disabled",null,this.disabled,a)),this.disabled=a)};Blockly.Block.prototype.getInheritedDisabled=function(){for(var a=this.getSurroundParent();a;){if(a.disabled)return!0;a=a.getSurroundParent()}return!1};Blockly.Block.prototype.isCollapsed=function(){return this.collapsed_};
-Blockly.Block.prototype.setCollapsed=function(a){this.collapsed_!=a&&(Blockly.Events.fire(new Blockly.Events.BlockChange(this,"collapsed",null,this.collapsed_,a)),this.collapsed_=a)};
-Blockly.Block.prototype.toString=function(a,b){var c=[],d=b||"?";if(this.collapsed_)c.push(this.getInput("_TEMP_COLLAPSED_INPUT").fieldRow[0].text_);else for(var e=0,f;f=this.inputList[e];e++){for(var g=0,h;h=f.fieldRow[g];g++)h instanceof Blockly.FieldDropdown&&!h.getValue()?c.push(d):c.push(h.getText());f.connection&&((f=f.connection.targetBlock())?c.push(f.toString(void 0,b)):c.push(d))}c=c.join(" ").trim()||"???";a&&c.length>a&&(c=c.substring(0,a-3)+"...");return c};
-Blockly.Block.prototype.appendValueInput=function(a){return this.appendInput_(Blockly.INPUT_VALUE,a)};Blockly.Block.prototype.appendStatementInput=function(a){return this.appendInput_(Blockly.NEXT_STATEMENT,a)};Blockly.Block.prototype.appendDummyInput=function(a){return this.appendInput_(Blockly.DUMMY_INPUT,a||"")};
-Blockly.Block.prototype.jsonInit=function(a){var b=a.type?'Block "'+a.type+'": ':"";if(a.output&&a.previousStatement)throw Error(b+"Must not have both an output and a previousStatement.");a.style&&a.style.hat&&(this.hat=a.style.hat,a.style=null);if(a.style&&a.colour)throw Error(b+"Must not have both a colour and a style.");a.style?this.jsonInitStyle_(a,b):this.jsonInitColour_(a,b);for(var c=0;void 0!==a["message"+c];)this.interpolate_(a["message"+c],a["args"+c]||[],a["lastDummyAlign"+c]),c++;void 0!==
-a.inputsInline&&this.setInputsInline(a.inputsInline);void 0!==a.output&&this.setOutput(!0,a.output);void 0!==a.previousStatement&&this.setPreviousStatement(!0,a.previousStatement);void 0!==a.nextStatement&&this.setNextStatement(!0,a.nextStatement);void 0!==a.tooltip&&(c=a.tooltip,c=Blockly.utils.replaceMessageReferences(c),this.setTooltip(c));void 0!==a.enableContextMenu&&(c=a.enableContextMenu,this.contextMenu=!!c);void 0!==a.helpUrl&&(c=a.helpUrl,c=Blockly.utils.replaceMessageReferences(c),this.setHelpUrl(c));
-"string"==typeof a.extensions&&(console.warn(b+"JSON attribute 'extensions' should be an array of strings. Found raw string in JSON for '"+a.type+"' block."),a.extensions=[a.extensions]);void 0!==a.mutator&&Blockly.Extensions.apply(a.mutator,this,!0);if(Array.isArray(a.extensions))for(a=a.extensions,b=0;b<a.length;++b)Blockly.Extensions.apply(a[b],this,!1)};
-Blockly.Block.prototype.jsonInitColour_=function(a,b){if("colour"in a)if(void 0===a.colour)console.warn(b+"Undefined color value.");else{var c=a.colour;try{this.setColour(c)}catch(d){console.warn(b+"Illegal color value: ",c)}}};Blockly.Block.prototype.jsonInitStyle_=function(a,b){var c=a.style;try{this.setStyle(c)}catch(d){console.warn(b+"Style does not exist: ",c)}};
-Blockly.Block.prototype.mixin=function(a,b){if(void 0!==b&&"boolean"!=typeof b)throw Error("opt_disableCheck must be a boolean if provided");if(!b){var c=[],d;for(d in a)void 0!==this[d]&&c.push(d);if(c.length)throw Error("Mixin will overwrite block members: "+JSON.stringify(c));}goog.mixin(this,a)};
-Blockly.Block.prototype.interpolate_=function(a,b,c){var d=Blockly.utils.tokenizeInterpolation(a),e=[],f=0;a=[];for(var g=0;g<d.length;g++){var h=d[g];if("number"==typeof h){if(0>=h||h>b.length)throw Error('Block "'+this.type+'": Message index %'+h+" out of range.");if(e[h])throw Error('Block "'+this.type+'": Message index %'+h+" duplicated.");e[h]=!0;f++;a.push(b[h-1])}else(h=h.trim())&&a.push(h)}if(f!=b.length)throw Error('Block "'+this.type+'": Message does not reference all '+b.length+" arg(s).");
-a.length&&("string"==typeof a[a.length-1]||Blockly.utils.startsWith(a[a.length-1].type,"field_"))&&(g={type:"input_dummy"},c&&(g.align=c),a.push(g));c={LEFT:Blockly.ALIGN_LEFT,RIGHT:Blockly.ALIGN_RIGHT,CENTRE:Blockly.ALIGN_CENTRE};b=[];for(g=0;g<a.length;g++)if(e=a[g],"string"==typeof e)b.push([e,void 0]);else{d=f=null;do if(h=!1,"string"==typeof e)f=new Blockly.FieldLabel(e);else switch(e.type){case "input_value":d=this.appendValueInput(e.name);break;case "input_statement":d=this.appendStatementInput(e.name);
-break;case "input_dummy":d=this.appendDummyInput(e.name);break;default:f=Blockly.Field.fromJson(e),f||(e.alt?(e=e.alt,h=!0):console.warn("Blockly could not create a field of type "+e.type+". You may need to register your custom field.  See github.com/google/blockly/issues/1584"))}while(h);if(f)b.push([f,e.name]);else if(d){e.check&&d.setCheck(e.check);e.align&&d.setAlign(c[e.align]);for(e=0;e<b.length;e++)d.appendField(b[e][0],b[e][1]);b.length=0}}};
-Blockly.Block.prototype.appendInput_=function(a,b){var c=null;if(a==Blockly.INPUT_VALUE||a==Blockly.NEXT_STATEMENT)c=this.makeConnection_(a);c=new Blockly.Input(a,b,this,c);this.inputList.push(c);return c};
-Blockly.Block.prototype.moveInputBefore=function(a,b){if(a!=b){for(var c=-1,d=b?-1:this.inputList.length,e=0,f;f=this.inputList[e];e++)if(f.name==a){if(c=e,-1!=d)break}else if(b&&f.name==b&&(d=e,-1!=c))break;if(-1==c)throw Error('Named input "'+a+'" not found.');if(-1==d)throw Error('Reference input "'+b+'" not found.');this.moveNumberedInputBefore(c,d)}};
-Blockly.Block.prototype.moveNumberedInputBefore=function(a,b){if(a==b)throw Error("Can't move input to itself.");if(a>=this.inputList.length)throw RangeError("Input index "+a+" out of bounds.");if(b>this.inputList.length)throw RangeError("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}if(!b)throw Error("Input 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.BlockChange(this,"comment",null,this.comment,a||"")),this.comment=a)};Blockly.Block.prototype.setWarningText=function(a,b){};Blockly.Block.prototype.setMutator=function(a){};
-Blockly.Block.prototype.getRelativeToSurfaceXY=function(){return this.xy_};Blockly.Block.prototype.moveBy=function(a,b){if(this.parentBlock_)throw Error("Block has parent.");var c=new Blockly.Events.BlockMove(this);this.xy_.translate(a,b);c.recordNew();Blockly.Events.fire(c)};Blockly.Block.prototype.makeConnection_=function(a){return new Blockly.Connection(this,a)};
-Blockly.Block.prototype.allInputsFilled=function(a){void 0===a&&(a=!0);if(!a&&this.isShadow())return!1;for(var b=0,c;c=this.inputList[b];b++)if(c.connection&&(c=c.connection.targetBlock(),!c||!c.allInputsFilled(a)))return!1;return(b=this.getNextBlock())?b.allInputsFilled(a):!0};Blockly.Block.prototype.toDevString=function(){var a=this.type?'"'+this.type+'" block':"Block";this.id&&(a+=' (id="'+this.id+'")');return a};Blockly.BlockDragSurfaceSvg=function(a){this.container_=a;this.createDom()};Blockly.BlockDragSurfaceSvg.prototype.SVG_=null;Blockly.BlockDragSurfaceSvg.prototype.dragGroup_=null;Blockly.BlockDragSurfaceSvg.prototype.container_=null;Blockly.BlockDragSurfaceSvg.prototype.scale_=1;Blockly.BlockDragSurfaceSvg.prototype.surfaceXY_=null;
-Blockly.BlockDragSurfaceSvg.prototype.createDom=function(){this.SVG_||(this.SVG_=Blockly.utils.createSvgElement("svg",{xmlns:Blockly.SVG_NS,"xmlns:html":Blockly.HTML_NS,"xmlns:xlink":"http://www.w3.org/1999/xlink",version:"1.1","class":"blocklyBlockDragSurface"},this.container_),this.dragGroup_=Blockly.utils.createSvgElement("g",{},this.SVG_))};
-Blockly.BlockDragSurfaceSvg.prototype.setBlocksAndShow=function(a){if(this.dragGroup_.childNodes.length)throw Error("Already dragging a block.");this.dragGroup_.appendChild(a);this.SVG_.style.display="block";this.surfaceXY_=new goog.math.Coordinate(0,0)};Blockly.BlockDragSurfaceSvg.prototype.translateAndScaleGroup=function(a,b,c){this.scale_=c;a=a.toFixed(0);b=b.toFixed(0);this.dragGroup_.setAttribute("transform","translate("+a+","+b+") scale("+c+")")};
-Blockly.BlockDragSurfaceSvg.prototype.translateSurfaceInternal_=function(){var a=this.surfaceXY_.x,b=this.surfaceXY_.y;a=a.toFixed(0);b=b.toFixed(0);this.SVG_.style.display="block";Blockly.utils.setCssTransform(this.SVG_,"translate3d("+a+"px, "+b+"px, 0px)")};Blockly.BlockDragSurfaceSvg.prototype.translateSurface=function(a,b){this.surfaceXY_=new goog.math.Coordinate(a*this.scale_,b*this.scale_);this.translateSurfaceInternal_()};
-Blockly.BlockDragSurfaceSvg.prototype.getSurfaceTranslation=function(){var a=Blockly.utils.getRelativeXY(this.SVG_);return new goog.math.Coordinate(a.x/this.scale_,a.y/this.scale_)};Blockly.BlockDragSurfaceSvg.prototype.getGroup=function(){return this.dragGroup_};Blockly.BlockDragSurfaceSvg.prototype.getCurrentBlock=function(){return this.dragGroup_.firstChild};
-Blockly.BlockDragSurfaceSvg.prototype.clearAndHide=function(a){a?a.appendChild(this.getCurrentBlock()):this.dragGroup_.removeChild(this.getCurrentBlock());this.SVG_.style.display="none";if(this.dragGroup_.childNodes.length)throw Error("Drag group was not cleared.");this.surfaceXY_=null};Blockly.utils.uiMenu={};Blockly.utils.uiMenu.getSize=function(a){a=a.getElement();var b=goog.style.getSize(a);b.height=a.scrollHeight;return b};Blockly.utils.uiMenu.adjustBBoxesForRTL=function(a,b,c){b.left+=c.width;b.right+=c.width;a.left+=c.width;a.right+=c.width};Blockly.ContextMenu={};Blockly.ContextMenu.currentBlock=null;Blockly.ContextMenu.eventWrapper_=null;Blockly.ContextMenu.show=function(a,b,c){Blockly.WidgetDiv.show(Blockly.ContextMenu,c,null);if(b.length){var d=Blockly.ContextMenu.populate_(b,c);goog.events.listen(d,goog.ui.Component.EventType.ACTION,Blockly.ContextMenu.hide);Blockly.ContextMenu.position_(d,a,c);setTimeout(function(){d.getElement().focus()},1);Blockly.ContextMenu.currentBlock=null}else Blockly.ContextMenu.hide()};
-Blockly.ContextMenu.populate_=function(a,b){var c=new goog.ui.Menu;c.setRightToLeft(b);for(var d=0,e;e=a[d];d++){var f=new goog.ui.MenuItem(e.text);f.setRightToLeft(b);c.addChild(f,!0);f.setEnabled(e.enabled);e.enabled&&(goog.events.listen(f,goog.ui.Component.EventType.ACTION,e.callback),f.handleContextMenu=function(){goog.events.dispatchEvent(this,goog.ui.Component.EventType.ACTION)})}return c};
-Blockly.ContextMenu.position_=function(a,b,c){var d=Blockly.utils.getViewportBBox();b={top:b.clientY+d.top,bottom:b.clientY+d.top,left:b.clientX+d.left,right:b.clientX+d.left};Blockly.ContextMenu.createWidget_(a);var e=Blockly.utils.uiMenu.getSize(a);c&&Blockly.utils.uiMenu.adjustBBoxesForRTL(d,b,e);Blockly.WidgetDiv.positionWithAnchor(d,b,e,c);a.getElement().focus()};
-Blockly.ContextMenu.createWidget_=function(a){a.render(Blockly.WidgetDiv.DIV);var b=a.getElement();Blockly.utils.addClass(b,"blocklyContextMenu");Blockly.bindEventWithChecks_(b,"contextmenu",null,Blockly.utils.noEvent);a.setAllowAutoFocus(!0)};Blockly.ContextMenu.hide=function(){Blockly.WidgetDiv.hideIfOwner(Blockly.ContextMenu);Blockly.ContextMenu.currentBlock=null;Blockly.ContextMenu.eventWrapper_&&Blockly.unbindEvent_(Blockly.ContextMenu.eventWrapper_)};
-Blockly.ContextMenu.callbackFactory=function(a,b){return function(){Blockly.Events.disable();try{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)}finally{Blockly.Events.enable()}Blockly.Events.isEnabled()&&!c.isShadow()&&Blockly.Events.fire(new Blockly.Events.BlockCreate(c));c.select()}};
-Blockly.ContextMenu.blockDeleteOption=function(a){var b=a.getDescendants(!1).length,c=a.getNextBlock();c&&(b-=c.getDescendants(!1).length);return{text:1==b?Blockly.Msg.DELETE_BLOCK:Blockly.Msg.DELETE_X_BLOCKS.replace("%1",String(b)),enabled:!0,callback:function(){Blockly.Events.setGroup(!0);a.dispose(!0,!0);Blockly.Events.setGroup(!1)}}};Blockly.ContextMenu.blockHelpOption=function(a){return{enabled:!("function"==typeof a.helpUrl?!a.helpUrl():!a.helpUrl),text:Blockly.Msg.HELP,callback:function(){a.showHelp_()}}};
-Blockly.ContextMenu.blockDuplicateOption=function(a){var b=a.isDuplicatable();return{text:Blockly.Msg.DUPLICATE_BLOCK,enabled:b,callback:function(){Blockly.duplicate_(a)}}};Blockly.ContextMenu.blockCommentOption=function(a){var b={enabled:!goog.userAgent.IE};a.comment?(b.text=Blockly.Msg.REMOVE_COMMENT,b.callback=function(){a.setCommentText(null)}):(b.text=Blockly.Msg.ADD_COMMENT,b.callback=function(){a.setCommentText("")});return b};
-Blockly.ContextMenu.commentDeleteOption=function(a){return{text:Blockly.Msg.REMOVE_COMMENT,enabled:!0,callback:function(){Blockly.Events.setGroup(!0);a.dispose(!0,!0);Blockly.Events.setGroup(!1)}}};Blockly.ContextMenu.commentDuplicateOption=function(a){return{text:Blockly.Msg.DUPLICATE_COMMENT,enabled:!0,callback:function(){Blockly.duplicate_(a)}}};
-Blockly.ContextMenu.workspaceCommentOption=function(a,b){var c={enabled:!goog.userAgent.IE};c.text=Blockly.Msg.ADD_COMMENT;c.callback=function(){var c=new Blockly.WorkspaceCommentSvg(a,Blockly.Msg.WORKSPACE_COMMENT_DEFAULT_TEXT,Blockly.WorkspaceCommentSvg.DEFAULT_SIZE,Blockly.WorkspaceCommentSvg.DEFAULT_SIZE),e=a.getInjectionDiv().getBoundingClientRect();e=new goog.math.Coordinate(b.clientX-e.left,b.clientY-e.top);var f=a.getOriginOffsetInPixels();e=goog.math.Coordinate.difference(e,f).scale(1/a.scale);
-c.moveBy(e.x,e.y);a.rendered&&(c.initSvg(),c.render(!1),c.select())};return c};Blockly.BlockSvg=function(a,b,c){this.svgGroup_=Blockly.utils.createSvgElement("g",{},null);this.svgGroup_.translate_="";this.svgPathDark_=Blockly.utils.createSvgElement("path",{"class":"blocklyPathDark",transform:"translate(1,1)"},this.svgGroup_);this.svgPath_=Blockly.utils.createSvgElement("path",{"class":"blocklyPath"},this.svgGroup_);this.svgPathLight_=Blockly.utils.createSvgElement("path",{"class":"blocklyPathLight"},this.svgGroup_);this.svgPath_.tooltip=this;this.rendered=!1;this.useDragSurface_=
-Blockly.utils.is3dSupported()&&!!a.blockDragSurface_;Blockly.Tooltip.bindMouseEvents(this.svgPath_);Blockly.BlockSvg.superClass_.constructor.call(this,a,b,c);this.svgGroup_.dataset&&(this.svgGroup_.dataset.id=this.id)};goog.inherits(Blockly.BlockSvg,Blockly.Block);Blockly.BlockSvg.prototype.height=0;Blockly.BlockSvg.prototype.width=0;Blockly.BlockSvg.prototype.dragStartXY_=null;Blockly.BlockSvg.prototype.warningTextDb_=null;Blockly.BlockSvg.INLINE=-1;Blockly.BlockSvg.COLLAPSED_WARNING_ID="TEMP_COLLAPSED_WARNING_";
-Blockly.BlockSvg.prototype.initSvg=function(){if(!this.workspace.rendered)throw TypeError("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();this.workspace.options.readOnly||this.eventsInit_||Blockly.bindEventWithChecks_(this.getSvgRoot(),"mousedown",this,this.onMouseDown_);this.eventsInit_=!0;this.getSvgRoot().parentNode||this.workspace.getCanvas().appendChild(this.getSvgRoot())};
-Blockly.BlockSvg.prototype.select=function(){if(this.isShadow()&&this.getParent())this.getParent().select();else if(Blockly.selected!=this){var a=null;if(Blockly.selected){a=Blockly.selected.id;Blockly.Events.disable();try{Blockly.selected.unselect()}finally{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.BlockSvg.prototype.unselect=function(){if(Blockly.selected==this){var a=new Blockly.Events.Ui(null,"selected",this.id,null);a.workspaceId=this.workspace.id;Blockly.Events.fire(a);Blockly.selected=null;this.removeSelect()}};Blockly.BlockSvg.prototype.mutator=null;Blockly.BlockSvg.prototype.comment=null;Blockly.BlockSvg.prototype.warning=null;
-Blockly.BlockSvg.prototype.getIcons=function(){var a=[];this.mutator&&a.push(this.mutator);this.comment&&a.push(this.comment);this.warning&&a.push(this.warning);return a};
-Blockly.BlockSvg.prototype.setParent=function(a){var b=this.parentBlock_;if(a!=b){Blockly.Field.startCache();Blockly.BlockSvg.superClass_.setParent.call(this,a);Blockly.Field.stopCache();var c=this.getSvgRoot();if(!this.workspace.isClearing&&c){var d=this.getRelativeToSurfaceXY();a?(a.getSvgRoot().appendChild(c),a=this.getRelativeToSurfaceXY(),this.moveConnections_(a.x-d.x,a.y-d.y)):b&&(this.workspace.getCanvas().appendChild(c),this.translate(d.x,d.y))}}};
-Blockly.BlockSvg.prototype.getRelativeToSurfaceXY=function(){var a=0,b=0,c=this.useDragSurface_?this.workspace.blockDragSurface_.getGroup():null,d=this.getSvgRoot();if(d){do{var e=Blockly.utils.getRelativeXY(d);a+=e.x;b+=e.y;this.useDragSurface_&&this.workspace.blockDragSurface_.getCurrentBlock()==d&&(e=this.workspace.blockDragSurface_.getSurfaceTranslation(),a+=e.x,b+=e.y);d=d.parentNode}while(d&&d!=this.workspace.getCanvas()&&d!=c)}return new goog.math.Coordinate(a,b)};
-Blockly.BlockSvg.prototype.moveBy=function(a,b){if(this.parentBlock_)throw Error("Block has parent.");var c=Blockly.Events.isEnabled();if(c)var d=new Blockly.Events.BlockMove(this);var e=this.getRelativeToSurfaceXY();this.translate(e.x+a,e.y+b);this.moveConnections_(a,b);c&&(d.recordNew(),Blockly.Events.fire(d));this.workspace.resizeContents()};Blockly.BlockSvg.prototype.translate=function(a,b){this.getSvgRoot().setAttribute("transform","translate("+a+","+b+")")};
-Blockly.BlockSvg.prototype.moveToDragSurface_=function(){if(this.useDragSurface_){var a=this.getRelativeToSurfaceXY();this.clearTransformAttributes_();this.workspace.blockDragSurface_.translateSurface(a.x,a.y);this.workspace.blockDragSurface_.setBlocksAndShow(this.getSvgRoot())}};Blockly.BlockSvg.prototype.moveOffDragSurface_=function(a){this.useDragSurface_&&(this.translate(a.x,a.y),this.workspace.blockDragSurface_.clearAndHide(this.workspace.getCanvas()))};
-Blockly.BlockSvg.prototype.moveDuringDrag=function(a){this.useDragSurface_?this.workspace.blockDragSurface_.translateSurface(a.x,a.y):(this.svgGroup_.translate_="translate("+a.x+","+a.y+")",this.svgGroup_.setAttribute("transform",this.svgGroup_.translate_+this.svgGroup_.skew_))};Blockly.BlockSvg.prototype.clearTransformAttributes_=function(){Blockly.utils.removeAttribute(this.getSvgRoot(),"transform")};
-Blockly.BlockSvg.prototype.snapToGrid=function(){if(this.workspace&&!this.workspace.isDragging()&&!this.getParent()&&!this.isInFlyout){var a=this.workspace.getGrid();if(a&&a.shouldSnap()){var b=a.getSpacing(),c=b/2,d=this.getRelativeToSurfaceXY();a=Math.round((d.x-c)/b)*b+c-d.x;b=Math.round((d.y-c)/b)*b+c-d.y;a=Math.round(a);b=Math.round(b);0==a&&0==b||this.moveBy(a,b)}}};
-Blockly.BlockSvg.prototype.getBoundingRectangle=function(){var a=this.getRelativeToSurfaceXY(this),b=this.outputConnection?Blockly.BlockSvg.TAB_WIDTH:0,c=this.getHeightWidth();if(this.RTL){var d=new goog.math.Coordinate(a.x-(c.width-b),a.y);a=new goog.math.Coordinate(a.x+b,a.y+c.height)}else d=new goog.math.Coordinate(a.x-b,a.y),a=new goog.math.Coordinate(a.x+c.width-b,a.y+c.height);return{topLeft:d,bottomRight:a}};
-Blockly.BlockSvg.prototype.setCollapsed=function(a){if(this.collapsed_!=a){for(var b=[],c=0,d;d=this.inputList[c];c++)b.push.apply(b,d.setVisible(!a));if(a){d=this.getIcons();for(c=0;c<d.length;c++)d[c].setVisible(!1);c=this.toString(Blockly.COLLAPSE_CHARS);this.appendDummyInput("_TEMP_COLLAPSED_INPUT").appendField(c).init();d=this.getDescenda
\ No newline at end of file
+Blockly.WorkspaceSvg.prototype.centerOnBlock=function(a){if(this.scrollbar){if(a=this.getBlockById(a)){var b=a.getRelativeToSurfaceXY(),c=a.getHeightWidth(),d=this.scale;a=(b.x+(this.RTL?-1:1)*c.width/2)*d;b=(b.y+c.height/2)*d;c=this.getMetrics();a=a-c.contentLef
\ No newline at end of file