From 674625c47ea85143d2c5dcf814bb70258237b2ea Mon Sep 17 00:00:00 2001
From: Neil Fraser <fraser@google.com>
Date: Fri, 28 Nov 2014 21:43:39 -0800
Subject: [PATCH] Add red 'X' to mouse cursor if blocks are over flyout.

---
 blockly_compressed.js   | 102 ++++++++++++++++++++--------------------
 blockly_uncompressed.js |   6 +--
 core/block.js           |  19 +++++---
 core/css.js             |  25 ++++++++--
 core/flyout.js          |  18 +++++++
 core/inject.js          |   5 --
 core/mutator.js         |  27 ++++-------
 core/trashcan.js        |  35 ++++----------
 core/workspace.js       |  49 +++++++++++++++++++
 9 files changed, 174 insertions(+), 112 deletions(-)

diff --git a/blockly_compressed.js b/blockly_compressed.js
index 9de94fa4..c2132a99 100644
--- a/blockly_compressed.js
+++ b/blockly_compressed.js
@@ -130,7 +130,29 @@ goog.math.standardAngleInRadians=function(a){return goog.math.modulo(a,2*Math.PI
 goog.math.angleDifference=function(a,b){var c=goog.math.standardAngle(b)-goog.math.standardAngle(a);180<c?c-=360:-180>=c&&(c=360+c);return c};goog.math.sign=function(a){return 0==a?0:0>a?-1:1};
 goog.math.longestCommonSubsequence=function(a,b,c,d){c=c||function(a,b){return a==b};d=d||function(b,c){return a[b]};for(var e=a.length,f=b.length,g=[],h=0;h<e+1;h++)g[h]=[],g[h][0]=0;for(var k=0;k<f+1;k++)g[0][k]=0;for(h=1;h<=e;h++)for(k=1;k<=f;k++)c(a[h-1],b[k-1])?g[h][k]=g[h-1][k-1]+1:g[h][k]=Math.max(g[h-1][k],g[h][k-1]);for(var l=[],h=e,k=f;0<h&&0<k;)c(a[h-1],b[k-1])?(l.unshift(d(h-1,k-1)),h--,k--):g[h-1][k]>g[h][k-1]?h--:k--;return l};
 goog.math.sum=function(a){return goog.array.reduce(arguments,function(a,c){return a+c},0)};goog.math.average=function(a){return goog.math.sum.apply(null,arguments)/arguments.length};goog.math.sampleVariance=function(a){var b=arguments.length;if(2>b)return 0;var c=goog.math.average.apply(null,arguments);return goog.math.sum.apply(null,goog.array.map(arguments,function(a){return Math.pow(a-c,2)}))/(b-1)};goog.math.standardDeviation=function(a){return Math.sqrt(goog.math.sampleVariance.apply(null,arguments))};
-goog.math.isInt=function(a){return isFinite(a)&&0==a%1};goog.math.isFiniteNumber=function(a){return isFinite(a)&&!isNaN(a)};goog.math.log10Floor=function(a){if(0<a){var b=Math.round(Math.log(a)*Math.LOG10E);return b-(parseFloat("1e"+b)>a)}return 0==a?-Infinity:NaN};goog.math.safeFloor=function(a,b){goog.asserts.assert(!goog.isDef(b)||0<b);return Math.floor(a+(b||2E-15))};goog.math.safeCeil=function(a,b){goog.asserts.assert(!goog.isDef(b)||0<b);return Math.ceil(a-(b||2E-15))};goog.Thenable=function(){};goog.Thenable.prototype.then=function(a,b,c){};goog.Thenable.IMPLEMENTED_BY_PROP="$goog_Thenable";goog.Thenable.addImplementation=function(a){goog.exportProperty(a.prototype,"then",a.prototype.then);COMPILED?a.prototype[goog.Thenable.IMPLEMENTED_BY_PROP]=!0:a.prototype.$goog_Thenable=!0};goog.Thenable.isImplementedBy=function(a){if(!a)return!1;try{return COMPILED?!!a[goog.Thenable.IMPLEMENTED_BY_PROP]:!!a.$goog_Thenable}catch(b){return!1}};goog.debug.entryPointRegistry={};goog.debug.EntryPointMonitor=function(){};goog.debug.entryPointRegistry.refList_=[];goog.debug.entryPointRegistry.monitors_=[];goog.debug.entryPointRegistry.monitorsMayExist_=!1;goog.debug.entryPointRegistry.register=function(a){goog.debug.entryPointRegistry.refList_[goog.debug.entryPointRegistry.refList_.length]=a;if(goog.debug.entryPointRegistry.monitorsMayExist_)for(var b=goog.debug.entryPointRegistry.monitors_,c=0;c<b.length;c++)a(goog.bind(b[c].wrap,b[c]))};
+goog.math.isInt=function(a){return isFinite(a)&&0==a%1};goog.math.isFiniteNumber=function(a){return isFinite(a)&&!isNaN(a)};goog.math.log10Floor=function(a){if(0<a){var b=Math.round(Math.log(a)*Math.LOG10E);return b-(parseFloat("1e"+b)>a)}return 0==a?-Infinity:NaN};goog.math.safeFloor=function(a,b){goog.asserts.assert(!goog.isDef(b)||0<b);return Math.floor(a+(b||2E-15))};goog.math.safeCeil=function(a,b){goog.asserts.assert(!goog.isDef(b)||0<b);return Math.ceil(a-(b||2E-15))};goog.math.Coordinate=function(a,b){this.x=goog.isDef(a)?a:0;this.y=goog.isDef(b)?b:0};goog.math.Coordinate.prototype.clone=function(){return new goog.math.Coordinate(this.x,this.y)};goog.DEBUG&&(goog.math.Coordinate.prototype.toString=function(){return"("+this.x+", "+this.y+")"});goog.math.Coordinate.equals=function(a,b){return a==b?!0:a&&b?a.x==b.x&&a.y==b.y:!1};goog.math.Coordinate.distance=function(a,b){var c=a.x-b.x,d=a.y-b.y;return Math.sqrt(c*c+d*d)};
+goog.math.Coordinate.magnitude=function(a){return Math.sqrt(a.x*a.x+a.y*a.y)};goog.math.Coordinate.azimuth=function(a){return goog.math.angle(0,0,a.x,a.y)};goog.math.Coordinate.squaredDistance=function(a,b){var c=a.x-b.x,d=a.y-b.y;return c*c+d*d};goog.math.Coordinate.difference=function(a,b){return new goog.math.Coordinate(a.x-b.x,a.y-b.y)};goog.math.Coordinate.sum=function(a,b){return new goog.math.Coordinate(a.x+b.x,a.y+b.y)};
+goog.math.Coordinate.prototype.ceil=function(){this.x=Math.ceil(this.x);this.y=Math.ceil(this.y);return this};goog.math.Coordinate.prototype.floor=function(){this.x=Math.floor(this.x);this.y=Math.floor(this.y);return this};goog.math.Coordinate.prototype.round=function(){this.x=Math.round(this.x);this.y=Math.round(this.y);return this};goog.math.Coordinate.prototype.translate=function(a,b){a instanceof goog.math.Coordinate?(this.x+=a.x,this.y+=a.y):(this.x+=a,goog.isNumber(b)&&(this.y+=b));return this};
+goog.math.Coordinate.prototype.scale=function(a,b){var c=goog.isNumber(b)?b:a;this.x*=a;this.y*=c;return this};goog.math.Coordinate.prototype.rotateRadians=function(a,b){var c=b||new goog.math.Coordinate(0,0),d=this.x,e=this.y,f=Math.cos(a),g=Math.sin(a);this.x=(d-c.x)*f-(e-c.y)*g+c.x;this.y=(d-c.x)*g+(e-c.y)*f+c.y};goog.math.Coordinate.prototype.rotateDegrees=function(a,b){this.rotateRadians(goog.math.toRadians(a),b)};goog.math.Box=function(a,b,c,d){this.top=a;this.right=b;this.bottom=c;this.left=d};goog.math.Box.boundingBox=function(a){for(var b=new goog.math.Box(arguments[0].y,arguments[0].x,arguments[0].y,arguments[0].x),c=1;c<arguments.length;c++){var d=arguments[c];b.top=Math.min(b.top,d.y);b.right=Math.max(b.right,d.x);b.bottom=Math.max(b.bottom,d.y);b.left=Math.min(b.left,d.x)}return b};goog.math.Box.prototype.getWidth=function(){return this.right-this.left};
+goog.math.Box.prototype.getHeight=function(){return this.bottom-this.top};goog.math.Box.prototype.clone=function(){return new goog.math.Box(this.top,this.right,this.bottom,this.left)};goog.DEBUG&&(goog.math.Box.prototype.toString=function(){return"("+this.top+"t, "+this.right+"r, "+this.bottom+"b, "+this.left+"l)"});goog.math.Box.prototype.contains=function(a){return goog.math.Box.contains(this,a)};
+goog.math.Box.prototype.expand=function(a,b,c,d){goog.isObject(a)?(this.top-=a.top,this.right+=a.right,this.bottom+=a.bottom,this.left-=a.left):(this.top-=a,this.right+=b,this.bottom+=c,this.left-=d);return this};goog.math.Box.prototype.expandToInclude=function(a){this.left=Math.min(this.left,a.left);this.top=Math.min(this.top,a.top);this.right=Math.max(this.right,a.right);this.bottom=Math.max(this.bottom,a.bottom)};
+goog.math.Box.equals=function(a,b){return a==b?!0:a&&b?a.top==b.top&&a.right==b.right&&a.bottom==b.bottom&&a.left==b.left:!1};goog.math.Box.contains=function(a,b){return a&&b?b instanceof goog.math.Box?b.left>=a.left&&b.right<=a.right&&b.top>=a.top&&b.bottom<=a.bottom:b.x>=a.left&&b.x<=a.right&&b.y>=a.top&&b.y<=a.bottom:!1};goog.math.Box.relativePositionX=function(a,b){return b.x<a.left?b.x-a.left:b.x>a.right?b.x-a.right:0};
+goog.math.Box.relativePositionY=function(a,b){return b.y<a.top?b.y-a.top:b.y>a.bottom?b.y-a.bottom:0};goog.math.Box.distance=function(a,b){var c=goog.math.Box.relativePositionX(a,b),d=goog.math.Box.relativePositionY(a,b);return Math.sqrt(c*c+d*d)};goog.math.Box.intersects=function(a,b){return a.left<=b.right&&b.left<=a.right&&a.top<=b.bottom&&b.top<=a.bottom};goog.math.Box.intersectsWithPadding=function(a,b,c){return a.left<=b.right+c&&b.left<=a.right+c&&a.top<=b.bottom+c&&b.top<=a.bottom+c};
+goog.math.Box.prototype.ceil=function(){this.top=Math.ceil(this.top);this.right=Math.ceil(this.right);this.bottom=Math.ceil(this.bottom);this.left=Math.ceil(this.left);return this};goog.math.Box.prototype.floor=function(){this.top=Math.floor(this.top);this.right=Math.floor(this.right);this.bottom=Math.floor(this.bottom);this.left=Math.floor(this.left);return this};
+goog.math.Box.prototype.round=function(){this.top=Math.round(this.top);this.right=Math.round(this.right);this.bottom=Math.round(this.bottom);this.left=Math.round(this.left);return this};goog.math.Box.prototype.translate=function(a,b){a instanceof goog.math.Coordinate?(this.left+=a.x,this.right+=a.x,this.top+=a.y,this.bottom+=a.y):(this.left+=a,this.right+=a,goog.isNumber(b)&&(this.top+=b,this.bottom+=b));return this};
+goog.math.Box.prototype.scale=function(a,b){var c=goog.isNumber(b)?b:a;this.left*=a;this.right*=a;this.top*=c;this.bottom*=c;return this};goog.math.Size=function(a,b){this.width=a;this.height=b};goog.math.Size.equals=function(a,b){return a==b?!0:a&&b?a.width==b.width&&a.height==b.height:!1};goog.math.Size.prototype.clone=function(){return new goog.math.Size(this.width,this.height)};goog.DEBUG&&(goog.math.Size.prototype.toString=function(){return"("+this.width+" x "+this.height+")"});goog.math.Size.prototype.getLongest=function(){return Math.max(this.width,this.height)};
+goog.math.Size.prototype.getShortest=function(){return Math.min(this.width,this.height)};goog.math.Size.prototype.area=function(){return this.width*this.height};goog.math.Size.prototype.perimeter=function(){return 2*(this.width+this.height)};goog.math.Size.prototype.aspectRatio=function(){return this.width/this.height};goog.math.Size.prototype.isEmpty=function(){return!this.area()};goog.math.Size.prototype.ceil=function(){this.width=Math.ceil(this.width);this.height=Math.ceil(this.height);return this};
+goog.math.Size.prototype.fitsInside=function(a){return this.width<=a.width&&this.height<=a.height};goog.math.Size.prototype.floor=function(){this.width=Math.floor(this.width);this.height=Math.floor(this.height);return this};goog.math.Size.prototype.round=function(){this.width=Math.round(this.width);this.height=Math.round(this.height);return this};goog.math.Size.prototype.scale=function(a,b){var c=goog.isNumber(b)?b:a;this.width*=a;this.height*=c;return this};
+goog.math.Size.prototype.scaleToFit=function(a){a=this.aspectRatio()>a.aspectRatio()?a.width/this.width:a.height/this.height;return this.scale(a)};goog.math.Rect=function(a,b,c,d){this.left=a;this.top=b;this.width=c;this.height=d};goog.math.Rect.prototype.clone=function(){return new goog.math.Rect(this.left,this.top,this.width,this.height)};goog.math.Rect.prototype.toBox=function(){return new goog.math.Box(this.top,this.left+this.width,this.top+this.height,this.left)};goog.math.Rect.createFromBox=function(a){return new goog.math.Rect(a.left,a.top,a.right-a.left,a.bottom-a.top)};
+goog.DEBUG&&(goog.math.Rect.prototype.toString=function(){return"("+this.left+", "+this.top+" - "+this.width+"w x "+this.height+"h)"});goog.math.Rect.equals=function(a,b){return a==b?!0:a&&b?a.left==b.left&&a.width==b.width&&a.top==b.top&&a.height==b.height:!1};
+goog.math.Rect.prototype.intersection=function(a){var b=Math.max(this.left,a.left),c=Math.min(this.left+this.width,a.left+a.width);if(b<=c){var d=Math.max(this.top,a.top);a=Math.min(this.top+this.height,a.top+a.height);if(d<=a)return this.left=b,this.top=d,this.width=c-b,this.height=a-d,!0}return!1};
+goog.math.Rect.intersection=function(a,b){var c=Math.max(a.left,b.left),d=Math.min(a.left+a.width,b.left+b.width);if(c<=d){var e=Math.max(a.top,b.top),f=Math.min(a.top+a.height,b.top+b.height);if(e<=f)return new goog.math.Rect(c,e,d-c,f-e)}return null};goog.math.Rect.intersects=function(a,b){return a.left<=b.left+b.width&&b.left<=a.left+a.width&&a.top<=b.top+b.height&&b.top<=a.top+a.height};goog.math.Rect.prototype.intersects=function(a){return goog.math.Rect.intersects(this,a)};
+goog.math.Rect.difference=function(a,b){var c=goog.math.Rect.intersection(a,b);if(!c||!c.height||!c.width)return[a.clone()];var c=[],d=a.top,e=a.height,f=a.left+a.width,g=a.top+a.height,h=b.left+b.width,k=b.top+b.height;b.top>a.top&&(c.push(new goog.math.Rect(a.left,a.top,a.width,b.top-a.top)),d=b.top,e-=b.top-a.top);k<g&&(c.push(new goog.math.Rect(a.left,k,a.width,g-k)),e=k-d);b.left>a.left&&c.push(new goog.math.Rect(a.left,d,b.left-a.left,e));h<f&&c.push(new goog.math.Rect(h,d,f-h,e));return c};
+goog.math.Rect.prototype.difference=function(a){return goog.math.Rect.difference(this,a)};goog.math.Rect.prototype.boundingRect=function(a){var b=Math.max(this.left+this.width,a.left+a.width),c=Math.max(this.top+this.height,a.top+a.height);this.left=Math.min(this.left,a.left);this.top=Math.min(this.top,a.top);this.width=b-this.left;this.height=c-this.top};goog.math.Rect.boundingRect=function(a,b){if(!a||!b)return null;var c=a.clone();c.boundingRect(b);return c};
+goog.math.Rect.prototype.contains=function(a){return a instanceof goog.math.Rect?this.left<=a.left&&this.left+this.width>=a.left+a.width&&this.top<=a.top&&this.top+this.height>=a.top+a.height:a.x>=this.left&&a.x<=this.left+this.width&&a.y>=this.top&&a.y<=this.top+this.height};goog.math.Rect.prototype.squaredDistance=function(a){var b=a.x<this.left?this.left-a.x:Math.max(a.x-(this.left+this.width),0);a=a.y<this.top?this.top-a.y:Math.max(a.y-(this.top+this.height),0);return b*b+a*a};
+goog.math.Rect.prototype.distance=function(a){return Math.sqrt(this.squaredDistance(a))};goog.math.Rect.prototype.getSize=function(){return new goog.math.Size(this.width,this.height)};goog.math.Rect.prototype.getTopLeft=function(){return new goog.math.Coordinate(this.left,this.top)};goog.math.Rect.prototype.getCenter=function(){return new goog.math.Coordinate(this.left+this.width/2,this.top+this.height/2)};
+goog.math.Rect.prototype.getBottomRight=function(){return new goog.math.Coordinate(this.left+this.width,this.top+this.height)};goog.math.Rect.prototype.ceil=function(){this.left=Math.ceil(this.left);this.top=Math.ceil(this.top);this.width=Math.ceil(this.width);this.height=Math.ceil(this.height);return this};goog.math.Rect.prototype.floor=function(){this.left=Math.floor(this.left);this.top=Math.floor(this.top);this.width=Math.floor(this.width);this.height=Math.floor(this.height);return this};
+goog.math.Rect.prototype.round=function(){this.left=Math.round(this.left);this.top=Math.round(this.top);this.width=Math.round(this.width);this.height=Math.round(this.height);return this};goog.math.Rect.prototype.translate=function(a,b){a instanceof goog.math.Coordinate?(this.left+=a.x,this.top+=a.y):(this.left+=a,goog.isNumber(b)&&(this.top+=b));return this};goog.math.Rect.prototype.scale=function(a,b){var c=goog.isNumber(b)?b:a;this.left*=a;this.width*=a;this.top*=c;this.height*=c;return this};goog.Thenable=function(){};goog.Thenable.prototype.then=function(a,b,c){};goog.Thenable.IMPLEMENTED_BY_PROP="$goog_Thenable";goog.Thenable.addImplementation=function(a){goog.exportProperty(a.prototype,"then",a.prototype.then);COMPILED?a.prototype[goog.Thenable.IMPLEMENTED_BY_PROP]=!0:a.prototype.$goog_Thenable=!0};goog.Thenable.isImplementedBy=function(a){if(!a)return!1;try{return COMPILED?!!a[goog.Thenable.IMPLEMENTED_BY_PROP]:!!a.$goog_Thenable}catch(b){return!1}};goog.debug.entryPointRegistry={};goog.debug.EntryPointMonitor=function(){};goog.debug.entryPointRegistry.refList_=[];goog.debug.entryPointRegistry.monitors_=[];goog.debug.entryPointRegistry.monitorsMayExist_=!1;goog.debug.entryPointRegistry.register=function(a){goog.debug.entryPointRegistry.refList_[goog.debug.entryPointRegistry.refList_.length]=a;if(goog.debug.entryPointRegistry.monitorsMayExist_)for(var b=goog.debug.entryPointRegistry.monitors_,c=0;c<b.length;c++)a(goog.bind(b[c].wrap,b[c]))};
 goog.debug.entryPointRegistry.monitorAll=function(a){goog.debug.entryPointRegistry.monitorsMayExist_=!0;for(var b=goog.bind(a.wrap,a),c=0;c<goog.debug.entryPointRegistry.refList_.length;c++)goog.debug.entryPointRegistry.refList_[c](b);goog.debug.entryPointRegistry.monitors_.push(a)};
 goog.debug.entryPointRegistry.unmonitorAllIfPossible=function(a){var b=goog.debug.entryPointRegistry.monitors_;goog.asserts.assert(a==b[b.length-1],"Only the most recent monitor can be unwrapped.");a=goog.bind(a.unwrap,a);for(var c=0;c<goog.debug.entryPointRegistry.refList_.length;c++)goog.debug.entryPointRegistry.refList_[c](a);b.length--};goog.functions={};goog.functions.constant=function(a){return function(){return a}};goog.functions.FALSE=goog.functions.constant(!1);goog.functions.TRUE=goog.functions.constant(!0);goog.functions.NULL=goog.functions.constant(null);goog.functions.identity=function(a,b){return a};goog.functions.error=function(a){return function(){throw Error(a);}};goog.functions.fail=function(a){return function(){throw a;}};
 goog.functions.lock=function(a,b){b=b||0;return function(){return a.apply(this,Array.prototype.slice.call(arguments,0,b))}};goog.functions.nth=function(a){return function(){return arguments[a]}};goog.functions.withReturnValue=function(a,b){return goog.functions.sequence(a,goog.functions.constant(b))};goog.functions.equalTo=function(a,b){return function(c){return b?a==c:a===c}};
@@ -217,13 +239,7 @@ goog.Timer.promise=function(a,b){var c=null;return(new goog.Promise(function(d,e
 LEGACY_IE_RANGES:goog.userAgent.IE&&!goog.userAgent.isDocumentModeOrHigher(9)};goog.dom.TagName={A:"A",ABBR:"ABBR",ACRONYM:"ACRONYM",ADDRESS:"ADDRESS",APPLET:"APPLET",AREA:"AREA",ARTICLE:"ARTICLE",ASIDE:"ASIDE",AUDIO:"AUDIO",B:"B",BASE:"BASE",BASEFONT:"BASEFONT",BDI:"BDI",BDO:"BDO",BIG:"BIG",BLOCKQUOTE:"BLOCKQUOTE",BODY:"BODY",BR:"BR",BUTTON:"BUTTON",CANVAS:"CANVAS",CAPTION:"CAPTION",CENTER:"CENTER",CITE:"CITE",CODE:"CODE",COL:"COL",COLGROUP:"COLGROUP",COMMAND:"COMMAND",DATA:"DATA",DATALIST:"DATALIST",DD:"DD",DEL:"DEL",DETAILS:"DETAILS",DFN:"DFN",DIALOG:"DIALOG",DIR:"DIR",DIV:"DIV",
 DL:"DL",DT:"DT",EM:"EM",EMBED:"EMBED",FIELDSET:"FIELDSET",FIGCAPTION:"FIGCAPTION",FIGURE:"FIGURE",FONT:"FONT",FOOTER:"FOOTER",FORM:"FORM",FRAME:"FRAME",FRAMESET:"FRAMESET",H1:"H1",H2:"H2",H3:"H3",H4:"H4",H5:"H5",H6:"H6",HEAD:"HEAD",HEADER:"HEADER",HGROUP:"HGROUP",HR:"HR",HTML:"HTML",I:"I",IFRAME:"IFRAME",IMG:"IMG",INPUT:"INPUT",INS:"INS",ISINDEX:"ISINDEX",KBD:"KBD",KEYGEN:"KEYGEN",LABEL:"LABEL",LEGEND:"LEGEND",LI:"LI",LINK:"LINK",MAP:"MAP",MARK:"MARK",MATH:"MATH",MENU:"MENU",META:"META",METER:"METER",
 NAV:"NAV",NOFRAMES:"NOFRAMES",NOSCRIPT:"NOSCRIPT",OBJECT:"OBJECT",OL:"OL",OPTGROUP:"OPTGROUP",OPTION:"OPTION",OUTPUT:"OUTPUT",P:"P",PARAM:"PARAM",PRE:"PRE",PROGRESS:"PROGRESS",Q:"Q",RP:"RP",RT:"RT",RUBY:"RUBY",S:"S",SAMP:"SAMP",SCRIPT:"SCRIPT",SECTION:"SECTION",SELECT:"SELECT",SMALL:"SMALL",SOURCE:"SOURCE",SPAN:"SPAN",STRIKE:"STRIKE",STRONG:"STRONG",STYLE:"STYLE",SUB:"SUB",SUMMARY:"SUMMARY",SUP:"SUP",SVG:"SVG",TABLE:"TABLE",TBODY:"TBODY",TD:"TD",TEXTAREA:"TEXTAREA",TFOOT:"TFOOT",TH:"TH",THEAD:"THEAD",
-TIME:"TIME",TITLE:"TITLE",TR:"TR",TRACK:"TRACK",TT:"TT",U:"U",UL:"UL",VAR:"VAR",VIDEO:"VIDEO",WBR:"WBR"};goog.math.Coordinate=function(a,b){this.x=goog.isDef(a)?a:0;this.y=goog.isDef(b)?b:0};goog.math.Coordinate.prototype.clone=function(){return new goog.math.Coordinate(this.x,this.y)};goog.DEBUG&&(goog.math.Coordinate.prototype.toString=function(){return"("+this.x+", "+this.y+")"});goog.math.Coordinate.equals=function(a,b){return a==b?!0:a&&b?a.x==b.x&&a.y==b.y:!1};goog.math.Coordinate.distance=function(a,b){var c=a.x-b.x,d=a.y-b.y;return Math.sqrt(c*c+d*d)};
-goog.math.Coordinate.magnitude=function(a){return Math.sqrt(a.x*a.x+a.y*a.y)};goog.math.Coordinate.azimuth=function(a){return goog.math.angle(0,0,a.x,a.y)};goog.math.Coordinate.squaredDistance=function(a,b){var c=a.x-b.x,d=a.y-b.y;return c*c+d*d};goog.math.Coordinate.difference=function(a,b){return new goog.math.Coordinate(a.x-b.x,a.y-b.y)};goog.math.Coordinate.sum=function(a,b){return new goog.math.Coordinate(a.x+b.x,a.y+b.y)};
-goog.math.Coordinate.prototype.ceil=function(){this.x=Math.ceil(this.x);this.y=Math.ceil(this.y);return this};goog.math.Coordinate.prototype.floor=function(){this.x=Math.floor(this.x);this.y=Math.floor(this.y);return this};goog.math.Coordinate.prototype.round=function(){this.x=Math.round(this.x);this.y=Math.round(this.y);return this};goog.math.Coordinate.prototype.translate=function(a,b){a instanceof goog.math.Coordinate?(this.x+=a.x,this.y+=a.y):(this.x+=a,goog.isNumber(b)&&(this.y+=b));return this};
-goog.math.Coordinate.prototype.scale=function(a,b){var c=goog.isNumber(b)?b:a;this.x*=a;this.y*=c;return this};goog.math.Coordinate.prototype.rotateRadians=function(a,b){var c=b||new goog.math.Coordinate(0,0),d=this.x,e=this.y,f=Math.cos(a),g=Math.sin(a);this.x=(d-c.x)*f-(e-c.y)*g+c.x;this.y=(d-c.x)*g+(e-c.y)*f+c.y};goog.math.Coordinate.prototype.rotateDegrees=function(a,b){this.rotateRadians(goog.math.toRadians(a),b)};goog.math.Size=function(a,b){this.width=a;this.height=b};goog.math.Size.equals=function(a,b){return a==b?!0:a&&b?a.width==b.width&&a.height==b.height:!1};goog.math.Size.prototype.clone=function(){return new goog.math.Size(this.width,this.height)};goog.DEBUG&&(goog.math.Size.prototype.toString=function(){return"("+this.width+" x "+this.height+")"});goog.math.Size.prototype.getLongest=function(){return Math.max(this.width,this.height)};
-goog.math.Size.prototype.getShortest=function(){return Math.min(this.width,this.height)};goog.math.Size.prototype.area=function(){return this.width*this.height};goog.math.Size.prototype.perimeter=function(){return 2*(this.width+this.height)};goog.math.Size.prototype.aspectRatio=function(){return this.width/this.height};goog.math.Size.prototype.isEmpty=function(){return!this.area()};goog.math.Size.prototype.ceil=function(){this.width=Math.ceil(this.width);this.height=Math.ceil(this.height);return this};
-goog.math.Size.prototype.fitsInside=function(a){return this.width<=a.width&&this.height<=a.height};goog.math.Size.prototype.floor=function(){this.width=Math.floor(this.width);this.height=Math.floor(this.height);return this};goog.math.Size.prototype.round=function(){this.width=Math.round(this.width);this.height=Math.round(this.height);return this};goog.math.Size.prototype.scale=function(a,b){var c=goog.isNumber(b)?b:a;this.width*=a;this.height*=c;return this};
-goog.math.Size.prototype.scaleToFit=function(a){a=this.aspectRatio()>a.aspectRatio()?a.width/this.width:a.height/this.height;return this.scale(a)};goog.dom.ASSUME_QUIRKS_MODE=!1;goog.dom.ASSUME_STANDARDS_MODE=!1;goog.dom.COMPAT_MODE_KNOWN_=goog.dom.ASSUME_QUIRKS_MODE||goog.dom.ASSUME_STANDARDS_MODE;goog.dom.getDomHelper=function(a){return a?new goog.dom.DomHelper(goog.dom.getOwnerDocument(a)):goog.dom.defaultDomHelper_||(goog.dom.defaultDomHelper_=new goog.dom.DomHelper)};goog.dom.getDocument=function(){return document};goog.dom.getElement=function(a){return goog.dom.getElementHelper_(document,a)};
+TIME:"TIME",TITLE:"TITLE",TR:"TR",TRACK:"TRACK",TT:"TT",U:"U",UL:"UL",VAR:"VAR",VIDEO:"VIDEO",WBR:"WBR"};goog.dom.ASSUME_QUIRKS_MODE=!1;goog.dom.ASSUME_STANDARDS_MODE=!1;goog.dom.COMPAT_MODE_KNOWN_=goog.dom.ASSUME_QUIRKS_MODE||goog.dom.ASSUME_STANDARDS_MODE;goog.dom.getDomHelper=function(a){return a?new goog.dom.DomHelper(goog.dom.getOwnerDocument(a)):goog.dom.defaultDomHelper_||(goog.dom.defaultDomHelper_=new goog.dom.DomHelper)};goog.dom.getDocument=function(){return document};goog.dom.getElement=function(a){return goog.dom.getElementHelper_(document,a)};
 goog.dom.getElementHelper_=function(a,b){return goog.isString(b)?a.getElementById(b):b};goog.dom.getRequiredElement=function(a){return goog.dom.getRequiredElementHelper_(document,a)};goog.dom.getRequiredElementHelper_=function(a,b){goog.asserts.assertString(b);var c=goog.dom.getElementHelper_(a,b);return c=goog.asserts.assertElement(c,"No element found with id: "+b)};goog.dom.$=goog.dom.getElement;
 goog.dom.getElementsByTagNameAndClass=function(a,b,c){return goog.dom.getElementsByTagNameAndClass_(document,a,b,c)};goog.dom.getElementsByClass=function(a,b){var c=b||document;return goog.dom.canUseQuerySelector_(c)?c.querySelectorAll("."+a):goog.dom.getElementsByTagNameAndClass_(document,"*",a,b)};goog.dom.getElementByClass=function(a,b){var c=b||document,d=null;return(d=goog.dom.canUseQuerySelector_(c)?c.querySelector("."+a):goog.dom.getElementsByTagNameAndClass_(document,"*",a,b)[0])||null};
 goog.dom.getRequiredElementByClass=function(a,b){var c=goog.dom.getElementByClass(a,b);return goog.asserts.assert(c,"No element found with className: "+a)};goog.dom.canUseQuerySelector_=function(a){return!(!a.querySelectorAll||!a.querySelector)};
@@ -275,23 +291,7 @@ goog.dom.DomHelper.prototype.getNextNode=goog.dom.getNextNode;goog.dom.DomHelper
 goog.dom.DomHelper.prototype.findCommonAncestor=goog.dom.findCommonAncestor;goog.dom.DomHelper.prototype.getOwnerDocument=goog.dom.getOwnerDocument;goog.dom.DomHelper.prototype.getFrameContentDocument=goog.dom.getFrameContentDocument;goog.dom.DomHelper.prototype.getFrameContentWindow=goog.dom.getFrameContentWindow;goog.dom.DomHelper.prototype.setTextContent=goog.dom.setTextContent;goog.dom.DomHelper.prototype.getOuterHtml=goog.dom.getOuterHtml;goog.dom.DomHelper.prototype.findNode=goog.dom.findNode;
 goog.dom.DomHelper.prototype.findNodes=goog.dom.findNodes;goog.dom.DomHelper.prototype.isFocusableTabIndex=goog.dom.isFocusableTabIndex;goog.dom.DomHelper.prototype.setFocusableTabIndex=goog.dom.setFocusableTabIndex;goog.dom.DomHelper.prototype.isFocusable=goog.dom.isFocusable;goog.dom.DomHelper.prototype.getTextContent=goog.dom.getTextContent;goog.dom.DomHelper.prototype.getNodeTextLength=goog.dom.getNodeTextLength;goog.dom.DomHelper.prototype.getNodeTextOffset=goog.dom.getNodeTextOffset;
 goog.dom.DomHelper.prototype.getNodeAtOffset=goog.dom.getNodeAtOffset;goog.dom.DomHelper.prototype.isNodeList=goog.dom.isNodeList;goog.dom.DomHelper.prototype.getAncestorByTagNameAndClass=goog.dom.getAncestorByTagNameAndClass;goog.dom.DomHelper.prototype.getAncestorByClass=goog.dom.getAncestorByClass;goog.dom.DomHelper.prototype.getAncestor=goog.dom.getAncestor;goog.dom.vendor={};goog.dom.vendor.getVendorJsPrefix=function(){return goog.userAgent.WEBKIT?"Webkit":goog.userAgent.GECKO?"Moz":goog.userAgent.IE?"ms":goog.userAgent.OPERA?"O":null};goog.dom.vendor.getVendorPrefix=function(){return goog.userAgent.WEBKIT?"-webkit":goog.userAgent.GECKO?"-moz":goog.userAgent.IE?"-ms":goog.userAgent.OPERA?"-o":null};
-goog.dom.vendor.getPrefixedPropertyName=function(a,b){if(b&&a in b)return a;var c=goog.dom.vendor.getVendorJsPrefix();return c?(c=c.toLowerCase(),c+=goog.string.toTitleCase(a),!goog.isDef(b)||c in b?c:null):null};goog.dom.vendor.getPrefixedEventType=function(a){return((goog.dom.vendor.getVendorJsPrefix()||"")+a).toLowerCase()};goog.math.Box=function(a,b,c,d){this.top=a;this.right=b;this.bottom=c;this.left=d};goog.math.Box.boundingBox=function(a){for(var b=new goog.math.Box(arguments[0].y,arguments[0].x,arguments[0].y,arguments[0].x),c=1;c<arguments.length;c++){var d=arguments[c];b.top=Math.min(b.top,d.y);b.right=Math.max(b.right,d.x);b.bottom=Math.max(b.bottom,d.y);b.left=Math.min(b.left,d.x)}return b};goog.math.Box.prototype.getWidth=function(){return this.right-this.left};
-goog.math.Box.prototype.getHeight=function(){return this.bottom-this.top};goog.math.Box.prototype.clone=function(){return new goog.math.Box(this.top,this.right,this.bottom,this.left)};goog.DEBUG&&(goog.math.Box.prototype.toString=function(){return"("+this.top+"t, "+this.right+"r, "+this.bottom+"b, "+this.left+"l)"});goog.math.Box.prototype.contains=function(a){return goog.math.Box.contains(this,a)};
-goog.math.Box.prototype.expand=function(a,b,c,d){goog.isObject(a)?(this.top-=a.top,this.right+=a.right,this.bottom+=a.bottom,this.left-=a.left):(this.top-=a,this.right+=b,this.bottom+=c,this.left-=d);return this};goog.math.Box.prototype.expandToInclude=function(a){this.left=Math.min(this.left,a.left);this.top=Math.min(this.top,a.top);this.right=Math.max(this.right,a.right);this.bottom=Math.max(this.bottom,a.bottom)};
-goog.math.Box.equals=function(a,b){return a==b?!0:a&&b?a.top==b.top&&a.right==b.right&&a.bottom==b.bottom&&a.left==b.left:!1};goog.math.Box.contains=function(a,b){return a&&b?b instanceof goog.math.Box?b.left>=a.left&&b.right<=a.right&&b.top>=a.top&&b.bottom<=a.bottom:b.x>=a.left&&b.x<=a.right&&b.y>=a.top&&b.y<=a.bottom:!1};goog.math.Box.relativePositionX=function(a,b){return b.x<a.left?b.x-a.left:b.x>a.right?b.x-a.right:0};
-goog.math.Box.relativePositionY=function(a,b){return b.y<a.top?b.y-a.top:b.y>a.bottom?b.y-a.bottom:0};goog.math.Box.distance=function(a,b){var c=goog.math.Box.relativePositionX(a,b),d=goog.math.Box.relativePositionY(a,b);return Math.sqrt(c*c+d*d)};goog.math.Box.intersects=function(a,b){return a.left<=b.right&&b.left<=a.right&&a.top<=b.bottom&&b.top<=a.bottom};goog.math.Box.intersectsWithPadding=function(a,b,c){return a.left<=b.right+c&&b.left<=a.right+c&&a.top<=b.bottom+c&&b.top<=a.bottom+c};
-goog.math.Box.prototype.ceil=function(){this.top=Math.ceil(this.top);this.right=Math.ceil(this.right);this.bottom=Math.ceil(this.bottom);this.left=Math.ceil(this.left);return this};goog.math.Box.prototype.floor=function(){this.top=Math.floor(this.top);this.right=Math.floor(this.right);this.bottom=Math.floor(this.bottom);this.left=Math.floor(this.left);return this};
-goog.math.Box.prototype.round=function(){this.top=Math.round(this.top);this.right=Math.round(this.right);this.bottom=Math.round(this.bottom);this.left=Math.round(this.left);return this};goog.math.Box.prototype.translate=function(a,b){a instanceof goog.math.Coordinate?(this.left+=a.x,this.right+=a.x,this.top+=a.y,this.bottom+=a.y):(this.left+=a,this.right+=a,goog.isNumber(b)&&(this.top+=b,this.bottom+=b));return this};
-goog.math.Box.prototype.scale=function(a,b){var c=goog.isNumber(b)?b:a;this.left*=a;this.right*=a;this.top*=c;this.bottom*=c;return this};goog.math.Rect=function(a,b,c,d){this.left=a;this.top=b;this.width=c;this.height=d};goog.math.Rect.prototype.clone=function(){return new goog.math.Rect(this.left,this.top,this.width,this.height)};goog.math.Rect.prototype.toBox=function(){return new goog.math.Box(this.top,this.left+this.width,this.top+this.height,this.left)};goog.math.Rect.createFromBox=function(a){return new goog.math.Rect(a.left,a.top,a.right-a.left,a.bottom-a.top)};
-goog.DEBUG&&(goog.math.Rect.prototype.toString=function(){return"("+this.left+", "+this.top+" - "+this.width+"w x "+this.height+"h)"});goog.math.Rect.equals=function(a,b){return a==b?!0:a&&b?a.left==b.left&&a.width==b.width&&a.top==b.top&&a.height==b.height:!1};
-goog.math.Rect.prototype.intersection=function(a){var b=Math.max(this.left,a.left),c=Math.min(this.left+this.width,a.left+a.width);if(b<=c){var d=Math.max(this.top,a.top);a=Math.min(this.top+this.height,a.top+a.height);if(d<=a)return this.left=b,this.top=d,this.width=c-b,this.height=a-d,!0}return!1};
-goog.math.Rect.intersection=function(a,b){var c=Math.max(a.left,b.left),d=Math.min(a.left+a.width,b.left+b.width);if(c<=d){var e=Math.max(a.top,b.top),f=Math.min(a.top+a.height,b.top+b.height);if(e<=f)return new goog.math.Rect(c,e,d-c,f-e)}return null};goog.math.Rect.intersects=function(a,b){return a.left<=b.left+b.width&&b.left<=a.left+a.width&&a.top<=b.top+b.height&&b.top<=a.top+a.height};goog.math.Rect.prototype.intersects=function(a){return goog.math.Rect.intersects(this,a)};
-goog.math.Rect.difference=function(a,b){var c=goog.math.Rect.intersection(a,b);if(!c||!c.height||!c.width)return[a.clone()];var c=[],d=a.top,e=a.height,f=a.left+a.width,g=a.top+a.height,h=b.left+b.width,k=b.top+b.height;b.top>a.top&&(c.push(new goog.math.Rect(a.left,a.top,a.width,b.top-a.top)),d=b.top,e-=b.top-a.top);k<g&&(c.push(new goog.math.Rect(a.left,k,a.width,g-k)),e=k-d);b.left>a.left&&c.push(new goog.math.Rect(a.left,d,b.left-a.left,e));h<f&&c.push(new goog.math.Rect(h,d,f-h,e));return c};
-goog.math.Rect.prototype.difference=function(a){return goog.math.Rect.difference(this,a)};goog.math.Rect.prototype.boundingRect=function(a){var b=Math.max(this.left+this.width,a.left+a.width),c=Math.max(this.top+this.height,a.top+a.height);this.left=Math.min(this.left,a.left);this.top=Math.min(this.top,a.top);this.width=b-this.left;this.height=c-this.top};goog.math.Rect.boundingRect=function(a,b){if(!a||!b)return null;var c=a.clone();c.boundingRect(b);return c};
-goog.math.Rect.prototype.contains=function(a){return a instanceof goog.math.Rect?this.left<=a.left&&this.left+this.width>=a.left+a.width&&this.top<=a.top&&this.top+this.height>=a.top+a.height:a.x>=this.left&&a.x<=this.left+this.width&&a.y>=this.top&&a.y<=this.top+this.height};goog.math.Rect.prototype.squaredDistance=function(a){var b=a.x<this.left?this.left-a.x:Math.max(a.x-(this.left+this.width),0);a=a.y<this.top?this.top-a.y:Math.max(a.y-(this.top+this.height),0);return b*b+a*a};
-goog.math.Rect.prototype.distance=function(a){return Math.sqrt(this.squaredDistance(a))};goog.math.Rect.prototype.getSize=function(){return new goog.math.Size(this.width,this.height)};goog.math.Rect.prototype.getTopLeft=function(){return new goog.math.Coordinate(this.left,this.top)};goog.math.Rect.prototype.getCenter=function(){return new goog.math.Coordinate(this.left+this.width/2,this.top+this.height/2)};
-goog.math.Rect.prototype.getBottomRight=function(){return new goog.math.Coordinate(this.left+this.width,this.top+this.height)};goog.math.Rect.prototype.ceil=function(){this.left=Math.ceil(this.left);this.top=Math.ceil(this.top);this.width=Math.ceil(this.width);this.height=Math.ceil(this.height);return this};goog.math.Rect.prototype.floor=function(){this.left=Math.floor(this.left);this.top=Math.floor(this.top);this.width=Math.floor(this.width);this.height=Math.floor(this.height);return this};
-goog.math.Rect.prototype.round=function(){this.left=Math.round(this.left);this.top=Math.round(this.top);this.width=Math.round(this.width);this.height=Math.round(this.height);return this};goog.math.Rect.prototype.translate=function(a,b){a instanceof goog.math.Coordinate?(this.left+=a.x,this.top+=a.y):(this.left+=a,goog.isNumber(b)&&(this.top+=b));return this};goog.math.Rect.prototype.scale=function(a,b){var c=goog.isNumber(b)?b:a;this.left*=a;this.width*=a;this.top*=c;this.height*=c;return this};goog.style={};goog.style.GET_BOUNDING_CLIENT_RECT_ALWAYS_EXISTS=!1;goog.style.setStyle=function(a,b,c){if(goog.isString(b))goog.style.setStyle_(a,c,b);else for(var d in b)goog.style.setStyle_(a,b[d],d)};goog.style.setStyle_=function(a,b,c){(c=goog.style.getVendorJsStyleName_(a,c))&&(a.style[c]=b)};goog.style.getVendorJsStyleName_=function(a,b){var c=goog.string.toCamelCase(b);if(void 0===a.style[c]){var d=goog.dom.vendor.getVendorJsPrefix()+goog.string.toTitleCase(c);if(void 0!==a.style[d])return d}return c};
+goog.dom.vendor.getPrefixedPropertyName=function(a,b){if(b&&a in b)return a;var c=goog.dom.vendor.getVendorJsPrefix();return c?(c=c.toLowerCase(),c+=goog.string.toTitleCase(a),!goog.isDef(b)||c in b?c:null):null};goog.dom.vendor.getPrefixedEventType=function(a){return((goog.dom.vendor.getVendorJsPrefix()||"")+a).toLowerCase()};goog.style={};goog.style.GET_BOUNDING_CLIENT_RECT_ALWAYS_EXISTS=!1;goog.style.setStyle=function(a,b,c){if(goog.isString(b))goog.style.setStyle_(a,c,b);else for(var d in b)goog.style.setStyle_(a,b[d],d)};goog.style.setStyle_=function(a,b,c){(c=goog.style.getVendorJsStyleName_(a,c))&&(a.style[c]=b)};goog.style.getVendorJsStyleName_=function(a,b){var c=goog.string.toCamelCase(b);if(void 0===a.style[c]){var d=goog.dom.vendor.getVendorJsPrefix()+goog.string.toTitleCase(c);if(void 0!==a.style[d])return d}return c};
 goog.style.getVendorStyleName_=function(a,b){var c=goog.string.toCamelCase(b);return void 0===a.style[c]&&(c=goog.dom.vendor.getVendorJsPrefix()+goog.string.toTitleCase(c),void 0!==a.style[c])?goog.dom.vendor.getVendorPrefix()+"-"+b:b};goog.style.getStyle=function(a,b){var c=a.style[goog.string.toCamelCase(b)];return"undefined"!==typeof c?c:a.style[goog.style.getVendorJsStyleName_(a,b)]||""};
 goog.style.getComputedStyle=function(a,b){var c=goog.dom.getOwnerDocument(a);return c.defaultView&&c.defaultView.getComputedStyle&&(c=c.defaultView.getComputedStyle(a,null))?c[b]||c.getPropertyValue(b)||"":""};goog.style.getCascadedStyle=function(a,b){return a.currentStyle?a.currentStyle[b]:null};goog.style.getStyle_=function(a,b){return goog.style.getComputedStyle(a,b)||goog.style.getCascadedStyle(a,b)||a.style&&a.style[b]};
 goog.style.getComputedBoxSizing=function(a){return goog.style.getStyle_(a,"boxSizing")||goog.style.getStyle_(a,"MozBoxSizing")||goog.style.getStyle_(a,"WebkitBoxSizing")||null};goog.style.getComputedPosition=function(a){return goog.style.getStyle_(a,"position")};goog.style.getBackgroundColor=function(a){return goog.style.getStyle_(a,"backgroundColor")};goog.style.getComputedOverflowX=function(a){return goog.style.getStyle_(a,"overflowX")};
@@ -879,8 +879,7 @@ Blockly.Trashcan.prototype.createDom=function(){this.svgGroup_=Blockly.createSvg
 "xlink:href",Blockly.pathToMedia+Blockly.SPRITE.url);a=Blockly.createSvgElement("clipPath",{id:"blocklyTrashLidClipPath"},this.svgGroup_);Blockly.createSvgElement("rect",{width:this.WIDTH_,height:this.LID_HEIGHT_},a);this.svgLid_=Blockly.createSvgElement("image",{width:Blockly.SPRITE.width,height:Blockly.SPRITE.height,y:-32,"clip-path":"url(#blocklyTrashLidClipPath)"},this.svgGroup_);this.svgLid_.setAttributeNS("http://www.w3.org/1999/xlink","xlink:href",Blockly.pathToMedia+Blockly.SPRITE.url);this.animateLid_();
 return this.svgGroup_};Blockly.Trashcan.prototype.init=function(){this.setOpen_(!1);this.position_();Blockly.bindEvent_(window,"resize",this,this.position_)};Blockly.Trashcan.prototype.dispose=function(){this.svgGroup_&&(goog.dom.removeNode(this.svgGroup_),this.svgGroup_=null);this.workspace_=this.svgLid_=null;goog.Timer.clear(this.lidTask_)};
 Blockly.Trashcan.prototype.position_=function(){var a=this.workspace_.getMetrics();a&&(this.left_=Blockly.RTL?this.MARGIN_SIDE_:a.viewWidth+a.absoluteLeft-this.WIDTH_-this.MARGIN_SIDE_,this.top_=a.viewHeight+a.absoluteTop-(this.BODY_HEIGHT_+this.LID_HEIGHT_)-this.MARGIN_BOTTOM_,this.svgGroup_.setAttribute("transform","translate("+this.left_+","+this.top_+")"))};
-Blockly.Trashcan.prototype.onMouseMove=function(a){if(this.svgGroup_){a=Blockly.mouseToSvg(a);var b=Blockly.getSvgXY_(this.svgGroup_);a=a.x>b.x-this.MARGIN_HOTSPOT_&&a.x<b.x+this.WIDTH_+this.MARGIN_HOTSPOT_&&a.y>b.y-this.MARGIN_HOTSPOT_&&a.y<b.y+this.BODY_HEIGHT_+this.LID_HEIGHT_+this.MARGIN_HOTSPOT_;this.isOpen!=a&&this.setOpen_(a)}};
-Blockly.Trashcan.prototype.setOpen_=function(a){this.isOpen!=a&&(goog.Timer.clear(this.lidTask_),this.isOpen=a,this.animateLid_(),Blockly.Css.setCursor(a?Blockly.Css.Cursor.DELETE:Blockly.Css.Cursor.CLOSED))};
+Blockly.Trashcan.prototype.getRect=function(){var a=Blockly.getSvgXY_(this.svgGroup_);return new goog.math.Rect(a.x-this.MARGIN_HOTSPOT_,a.y-this.MARGIN_HOTSPOT_,this.WIDTH_+2*this.MARGIN_HOTSPOT_,this.BODY_HEIGHT_+this.LID_HEIGHT_+2*this.MARGIN_HOTSPOT_)};Blockly.Trashcan.prototype.setOpen_=function(a){this.isOpen!=a&&(goog.Timer.clear(this.lidTask_),this.isOpen=a,this.animateLid_())};
 Blockly.Trashcan.prototype.animateLid_=function(){this.lidOpen_+=this.isOpen?.2:-.2;this.lidOpen_=goog.math.clamp(this.lidOpen_,0,1);var a=45*this.lidOpen_;this.svgLid_.setAttribute("transform","rotate("+(Blockly.RTL?-a:a)+", "+(Blockly.RTL?4:this.WIDTH_-4)+", "+(this.LID_HEIGHT_-2)+")");a=goog.math.lerp(.2,.4,this.lidOpen_);this.svgGroup_.style.opacity=a;if(0<this.lidOpen_||1>this.lidOpen_)this.lidTask_=goog.Timer.callOnce(this.animateLid_,20,this)};Blockly.Trashcan.prototype.close=function(){this.setOpen_(!1)};
 // Copyright 2012 Google Inc.  Apache License 2.0
 Blockly.Xml={};Blockly.Xml.workspaceToDom=function(a){var b;Blockly.RTL&&(b=a.getMetrics().viewWidth);var c=goog.dom.createDom("xml");a=a.getTopBlocks(!0);for(var d=0,e;e=a[d];d++){var f=Blockly.Xml.blockToDom_(e);e=e.getRelativeToSurfaceXY();f.setAttribute("x",Blockly.RTL?b-e.x:e.x);f.setAttribute("y",e.y);c.appendChild(f)}return c};
@@ -898,8 +897,9 @@ a.render():d.render();return d};Blockly.Xml.deleteNext=function(a){for(var b=0,c
 // Copyright 2012 Google Inc.  Apache License 2.0
 Blockly.Workspace=function(a,b){this.getMetrics=a;this.setMetrics=b;this.isFlyout=!1;this.topBlocks_=[];this.maxBlocks=Infinity;Blockly.ConnectionDB.init(this)};Blockly.Workspace.SCAN_ANGLE=3;Blockly.Workspace.prototype.dragMode=!1;Blockly.Workspace.prototype.scrollX=0;Blockly.Workspace.prototype.scrollY=0;Blockly.Workspace.prototype.trashcan=null;Blockly.Workspace.prototype.fireChangeEventPid_=null;Blockly.Workspace.prototype.scrollbar=null;
 Blockly.Workspace.prototype.createDom=function(){this.svgGroup_=Blockly.createSvgElement("g",{},null);this.svgBlockCanvas_=Blockly.createSvgElement("g",{},this.svgGroup_);this.svgBubbleCanvas_=Blockly.createSvgElement("g",{},this.svgGroup_);this.fireChangeEvent();return this.svgGroup_};
-Blockly.Workspace.prototype.dispose=function(){this.svgGroup_&&(goog.dom.removeNode(this.svgGroup_),this.svgGroup_=null);this.svgBubbleCanvas_=this.svgBlockCanvas_=null;this.trashcan&&(this.trashcan.dispose(),this.trashcan=null)};Blockly.Workspace.prototype.addTrashcan=function(){if(Blockly.hasTrashcan&&!Blockly.readOnly){this.trashcan=new Blockly.Trashcan(this);var a=this.trashcan.createDom();this.svgGroup_.insertBefore(a,this.svgBlockCanvas_);this.trashcan.init()}};
-Blockly.Workspace.prototype.getCanvas=function(){return this.svgBlockCanvas_};Blockly.Workspace.prototype.getBubbleCanvas=function(){return this.svgBubbleCanvas_};Blockly.Workspace.prototype.addTopBlock=function(a){this.topBlocks_.push(a);Blockly.Realtime.isEnabled()&&this==Blockly.mainWorkspace&&Blockly.Realtime.addTopBlock(a);this.fireChangeEvent()};
+Blockly.Workspace.prototype.dispose=function(){this.svgGroup_&&(goog.dom.removeNode(this.svgGroup_),this.svgGroup_=null);this.svgBubbleCanvas_=this.svgBlockCanvas_=null;this.flyout_&&(this.flyout_.dispose(),this.flyout_=null);this.trashcan&&(this.trashcan.dispose(),this.trashcan=null)};
+Blockly.Workspace.prototype.addTrashcan=function(){if(Blockly.hasTrashcan&&!Blockly.readOnly){this.trashcan=new Blockly.Trashcan(this);var a=this.trashcan.createDom();this.svgGroup_.insertBefore(a,this.svgBlockCanvas_);this.trashcan.init()}};Blockly.Workspace.prototype.getCanvas=function(){return this.svgBlockCanvas_};Blockly.Workspace.prototype.getBubbleCanvas=function(){return this.svgBubbleCanvas_};
+Blockly.Workspace.prototype.addTopBlock=function(a){this.topBlocks_.push(a);Blockly.Realtime.isEnabled()&&this==Blockly.mainWorkspace&&Blockly.Realtime.addTopBlock(a);this.fireChangeEvent()};
 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.Realtime.isEnabled()&&this==Blockly.mainWorkspace&&Blockly.Realtime.removeTopBlock(a);this.fireChangeEvent()};
 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));Blockly.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(){for(Blockly.hideChaff();this.topBlocks_.length;)this.topBlocks_[0].dispose()};
 Blockly.Workspace.prototype.render=function(){for(var a=this.getAllBlocks(),b=0,c;c=a[b];b++)c.getChildren().length||c.render()};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};
@@ -907,7 +907,9 @@ Blockly.Workspace.prototype.traceOn=function(a){this.traceOn_=a;this.traceWrappe
 Blockly.Workspace.prototype.highlightBlock=function(a){this.traceOn_&&0!=Blockly.Block.dragMode_&&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.Workspace.prototype.fireChangeEvent=function(){this.fireChangeEventPid_&&window.clearTimeout(this.fireChangeEventPid_);var a=this.svgBlockCanvas_;a&&(this.fireChangeEventPid_=window.setTimeout(function(){Blockly.fireUiEvent(a,"blocklyWorkspaceChange")},0))};
 Blockly.Workspace.prototype.paste=function(a){if(!(a.getElementsByTagName("block").length>=this.remainingCapacity())){var b=Blockly.Xml.domToBlock(this,a),c=parseInt(a.getAttribute("x"),10);a=parseInt(a.getAttribute("y"),10);if(!isNaN(c)&&!isNaN(a)){Blockly.RTL&&(c=-c);do for(var d=!1,e=this.getAllBlocks(),f=0,g;g=e[f];f++)g=g.getRelativeToSurfaceXY(),1>=Math.abs(c-g.x)&&1>=Math.abs(a-g.y)&&(c=Blockly.RTL?c-Blockly.SNAP_RADIUS:c+Blockly.SNAP_RADIUS,a+=2*Blockly.SNAP_RADIUS,d=!0);while(d);b.moveBy(c,
-a)}b.select()}};Blockly.Workspace.prototype.remainingCapacity=function(){return Infinity==this.maxBlocks?Infinity:this.maxBlocks-this.getAllBlocks().length};Blockly.Workspace.prototype.clear=Blockly.Workspace.prototype.clear;
+a)}b.select()}};Blockly.Workspace.prototype.remainingCapacity=function(){return Infinity==this.maxBlocks?Infinity:this.maxBlocks-this.getAllBlocks().length};Blockly.Workspace.prototype.recordDeleteAreas=function(){this.deleteAreaTrash_=this.trashcan?this.trashcan.getRect():null;this.deleteAreaToolbox_=this.flyout_?this.flyout_.getRect():null};
+Blockly.Workspace.prototype.isDeleteArea=function(a){a=Blockly.mouseToSvg(a);a=new goog.math.Coordinate(a.x,a.y);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};
+Blockly.Workspace.prototype.clear=Blockly.Workspace.prototype.clear;
 // Copyright 2012 Google Inc.  Apache License 2.0
 Blockly.Bubble=function(a,b,c,d,e,f,g){var h=Blockly.Bubble.ARROW_ANGLE;Blockly.RTL&&(h=-h);this.arrow_radians_=goog.math.toRadians(h);this.workspace_=a;this.content_=b;this.shape_=c;a.getBubbleCanvas().appendChild(this.createDom_(b,!(!f||!g)));this.setAnchorLocation(d,e);f&&g||(a=this.content_.getBBox(),f=a.width+2*Blockly.Bubble.BORDER_WIDTH,g=a.height+2*Blockly.Bubble.BORDER_WIDTH);this.setBubbleSize(f,g);this.positionBubble_();this.renderArrow_();this.rendered_=!0;Blockly.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;
@@ -1009,15 +1011,15 @@ Blockly.Msg={};
 Blockly.Mutator=function(a){Blockly.Mutator.superClass_.constructor.call(this,null);this.quarkXml_=[];for(var b=0;b<a.length;b++){var c=goog.dom.createDom("block",{type:a[b]});this.quarkXml_[b]=c}};goog.inherits(Blockly.Mutator,Blockly.Icon);Blockly.Mutator.prototype.workspaceWidth_=0;Blockly.Mutator.prototype.workspaceHeight_=0;
 Blockly.Mutator.prototype.createIcon=function(){Blockly.Icon.prototype.createIcon_.call(this);var a=Blockly.Icon.RADIUS/2;Blockly.createSvgElement("rect",{"class":"blocklyIconShield",width:4*a,height:4*a,rx:a,ry:a},this.iconGroup_);this.iconMark_=Blockly.createSvgElement("text",{"class":"blocklyIconMark",x:Blockly.Icon.RADIUS,y:2*Blockly.Icon.RADIUS-4},this.iconGroup_);this.iconMark_.appendChild(document.createTextNode("\u2605"))};
 Blockly.Mutator.prototype.iconClick_=function(a){this.block_.isEditable()&&Blockly.Icon.prototype.iconClick_.call(this,a)};
-Blockly.Mutator.prototype.createEditor_=function(){this.svgDialog_=Blockly.createSvgElement("svg",{x:Blockly.Bubble.BORDER_WIDTH,y:Blockly.Bubble.BORDER_WIDTH},null);Blockly.createSvgElement("rect",{"class":"blocklyMutatorBackground",height:"100%",width:"100%"},this.svgDialog_);var a=this;this.workspace_=new Blockly.Workspace(function(){return a.getFlyoutMetrics_()},null);this.flyout_=new Blockly.Flyout;this.flyout_.autoClose=!1;this.svgDialog_.appendChild(this.flyout_.createDom());this.svgDialog_.appendChild(this.workspace_.createDom());
-return this.svgDialog_};Blockly.Mutator.prototype.updateEditable=function(){this.block_.isEditable()?Blockly.Icon.prototype.updateEditable.call(this):(this.setVisible(!1),Blockly.removeClass_(this.iconGroup_,"blocklyIconGroup"))};
-Blockly.Mutator.prototype.resizeBubble_=function(){var a=2*Blockly.Bubble.BORDER_WIDTH,b=this.workspace_.getCanvas().getBBox(),c=this.flyout_.getMetrics_(),d;d=Blockly.RTL?-b.x:b.width+b.x;b=Math.max(b.height+3*a,c.contentHeight+20);d+=3*a;if(Math.abs(this.workspaceWidth_-d)>a||Math.abs(this.workspaceHeight_-b)>a)this.workspaceWidth_=d,this.workspaceHeight_=b,this.bubble_.setBubbleSize(d+a,b+a),this.svgDialog_.setAttribute("width",this.workspaceWidth_),this.svgDialog_.setAttribute("height",this.workspaceHeight_);
-Blockly.RTL&&(a="translate("+this.workspaceWidth_+",0)",this.workspace_.getCanvas().setAttribute("transform",a))};
-Blockly.Mutator.prototype.setVisible=function(a){if(a!=this.isVisible())if(a){this.bubble_=new Blockly.Bubble(this.block_.workspace,this.createEditor_(),this.block_.svg_.svgPath_,this.iconX_,this.iconY_,null,null);var b=this;this.flyout_.init(this.workspace_);this.flyout_.show(this.quarkXml_);this.rootBlock_=this.block_.decompose(this.workspace_);a=this.rootBlock_.getDescendants();for(var c=0,d;d=a[c];c++)d.render();this.rootBlock_.setMovable(!1);this.rootBlock_.setDeletable(!1);a=2*this.flyout_.CORNER_RADIUS;
-c=this.flyout_.width_+a;Blockly.RTL&&(c=-c);this.rootBlock_.moveBy(c,a);this.block_.saveConnections&&(this.block_.saveConnections(this.rootBlock_),this.sourceListener_=Blockly.bindEvent_(this.block_.workspace.getCanvas(),"blocklyWorkspaceChange",this.block_,function(){b.block_.saveConnections(b.rootBlock_)}));this.resizeBubble_();Blockly.bindEvent_(this.workspace_.getCanvas(),"blocklyWorkspaceChange",this.block_,function(){b.workspaceChanged_()});this.updateColour()}else this.svgDialog_=null,this.flyout_.dispose(),
-this.flyout_=null,this.workspace_.dispose(),this.rootBlock_=this.workspace_=null,this.bubble_.dispose(),this.bubble_=null,this.workspaceHeight_=this.workspaceWidth_=0,this.sourceListener_&&(Blockly.unbindEvent_(this.sourceListener_),this.sourceListener_=null)};
-Blockly.Mutator.prototype.workspaceChanged_=function(){if(0==Blockly.Block.dragMode_)for(var a=this.workspace_.getTopBlocks(!1),b=0,c;c=a[b];b++){var d=c.getRelativeToSurfaceXY(),e=c.getHeightWidth();c.isDeletable()&&(Blockly.RTL?d.x>-this.flyout_.width_+20:d.x<this.flyout_.width_-20)?c.dispose(!1,!0):20>d.y+e.height&&c.moveBy(0,20-e.height-d.y)}this.rootBlock_.workspace==this.workspace_&&(a=this.block_.rendered,this.block_.rendered=!1,this.block_.compose(this.rootBlock_),this.block_.rendered=a,this.block_.rendered&&
-this.block_.render(),this.resizeBubble_(),this.block_.workspace.fireChangeEvent())};Blockly.Mutator.prototype.getFlyoutMetrics_=function(){var a=0;Blockly.RTL&&(a+=this.workspaceWidth_);return{viewHeight:this.workspaceHeight_,viewWidth:0,absoluteTop:0,absoluteLeft:a}};Blockly.Mutator.prototype.dispose=function(){this.block_.mutator=null;Blockly.Icon.prototype.dispose.call(this)};
+Blockly.Mutator.prototype.createEditor_=function(){this.svgDialog_=Blockly.createSvgElement("svg",{x:Blockly.Bubble.BORDER_WIDTH,y:Blockly.Bubble.BORDER_WIDTH},null);Blockly.createSvgElement("rect",{"class":"blocklyMutatorBackground",height:"100%",width:"100%"},this.svgDialog_);var a=this;this.workspace_=new Blockly.Workspace(function(){return a.getFlyoutMetrics_()},null);this.workspace_.flyout_=new Blockly.Flyout;this.workspace_.flyout_.autoClose=!1;this.svgDialog_.appendChild(this.workspace_.flyout_.createDom());
+this.svgDialog_.appendChild(this.workspace_.createDom());return this.svgDialog_};Blockly.Mutator.prototype.updateEditable=function(){this.block_.isEditable()?Blockly.Icon.prototype.updateEditable.call(this):(this.setVisible(!1),Blockly.removeClass_(this.iconGroup_,"blocklyIconGroup"))};
+Blockly.Mutator.prototype.resizeBubble_=function(){var a=2*Blockly.Bubble.BORDER_WIDTH,b=this.workspace_.getCanvas().getBBox(),c=this.workspace_.flyout_.getMetrics_(),d;d=Blockly.RTL?-b.x:b.width+b.x;b=Math.max(b.height+3*a,c.contentHeight+20);d+=3*a;if(Math.abs(this.workspaceWidth_-d)>a||Math.abs(this.workspaceHeight_-b)>a)this.workspaceWidth_=d,this.workspaceHeight_=b,this.bubble_.setBubbleSize(d+a,b+a),this.svgDialog_.setAttribute("width",this.workspaceWidth_),this.svgDialog_.setAttribute("height",
+this.workspaceHeight_);Blockly.RTL&&(a="translate("+this.workspaceWidth_+",0)",this.workspace_.getCanvas().setAttribute("transform",a))};
+Blockly.Mutator.prototype.setVisible=function(a){if(a!=this.isVisible())if(a){this.bubble_=new Blockly.Bubble(this.block_.workspace,this.createEditor_(),this.block_.svg_.svgPath_,this.iconX_,this.iconY_,null,null);var b=this;this.workspace_.flyout_.init(this.workspace_);this.workspace_.flyout_.show(this.quarkXml_);this.rootBlock_=this.block_.decompose(this.workspace_);a=this.rootBlock_.getDescendants();for(var c=0,d;d=a[c];c++)d.render();this.rootBlock_.setMovable(!1);this.rootBlock_.setDeletable(!1);
+a=2*this.workspace_.flyout_.CORNER_RADIUS;c=this.workspace_.flyout_.width_+a;Blockly.RTL&&(c=-c);this.rootBlock_.moveBy(c,a);this.block_.saveConnections&&(this.block_.saveConnections(this.rootBlock_),this.sourceListener_=Blockly.bindEvent_(this.block_.workspace.getCanvas(),"blocklyWorkspaceChange",this.block_,function(){b.block_.saveConnections(b.rootBlock_)}));this.resizeBubble_();Blockly.bindEvent_(this.workspace_.getCanvas(),"blocklyWorkspaceChange",this.block_,function(){b.workspaceChanged_()});
+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_&&(Blockly.unbindEvent_(this.sourceListener_),this.sourceListener_=null)};
+Blockly.Mutator.prototype.workspaceChanged_=function(){if(0==Blockly.Block.dragMode_)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)}this.rootBlock_.workspace==this.workspace_&&(a=this.block_.rendered,this.block_.rendered=!1,this.block_.compose(this.rootBlock_),this.block_.rendered=a,this.block_.rendered&&this.block_.render(),this.resizeBubble_(),this.block_.workspace.fireChangeEvent())};
+Blockly.Mutator.prototype.getFlyoutMetrics_=function(){var a=0;Blockly.RTL&&(a+=this.workspaceWidth_);return{viewHeight:this.workspaceHeight_,viewWidth:0,absoluteTop:0,absoluteLeft:a}};Blockly.Mutator.prototype.dispose=function(){this.block_.mutator=null;Blockly.Icon.prototype.dispose.call(this)};
 // Copyright 2012 Google Inc.  Apache License 2.0
 Blockly.Warning=function(a){Blockly.Warning.superClass_.constructor.call(this,a);this.createIcon_()};goog.inherits(Blockly.Warning,Blockly.Icon);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.text_="";Blockly.Warning.prototype.createIcon_=function(){Blockly.Icon.prototype.createIcon_.call(this);Blockly.createSvgElement("path",{"class":"blocklyIconShield",d:"M 2,15 Q -1,15 0.5,12 L 6.5,1.7 Q 8,-1 9.5,1.7 L 15.5,12 Q 17,15 14,15 z"},this.iconGroup_);this.iconMark_=Blockly.createSvgElement("text",{"class":"blocklyIconMark",x:Blockly.Icon.RADIUS,y:2*Blockly.Icon.RADIUS-3},this.iconGroup_);this.iconMark_.appendChild(document.createTextNode("!"))};
@@ -1030,7 +1032,7 @@ Blockly.Block.prototype.fill=function(a,b){this.previousConnection=this.nextConn
 c)}goog.isFunction(this.init)&&this.init()};Blockly.Block.getById=function(a,b){return Blockly.Realtime.isEnabled()?Blockly.Realtime.getBlockById(a):b.getBlockById(a)};Blockly.Block.prototype.svg_=null;Blockly.Block.prototype.mutator=null;Blockly.Block.prototype.comment=null;Blockly.Block.prototype.warning=null;Blockly.Block.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.Block.prototype.initSvg=function(){this.svg_=new Blockly.BlockSvg(this);this.svg_.init();Blockly.readOnly||Blockly.bindEvent_(this.svg_.getRootElement(),"mousedown",this,this.onMouseDown_);this.workspace.getCanvas().appendChild(this.svg_.getRootElement())};Blockly.Block.prototype.getSvgRoot=function(){return this.svg_&&this.svg_.getRootElement()};Blockly.Block.dragMode_=0;Blockly.Block.onMouseUpWrapper_=null;Blockly.Block.onMouseMoveWrapper_=null;
 Blockly.Block.terminateDrag_=function(){Blockly.Block.onMouseUpWrapper_&&(Blockly.unbindEvent_(Blockly.Block.onMouseUpWrapper_),Blockly.Block.onMouseUpWrapper_=null);Blockly.Block.onMouseMoveWrapper_&&(Blockly.unbindEvent_(Blockly.Block.onMouseMoveWrapper_),Blockly.Block.onMouseMoveWrapper_=null);var a=Blockly.selected;if(2==Blockly.Block.dragMode_&&a){var b=a.getRelativeToSurfaceXY();a.moveConnections_(b.x-a.startDragX,b.y-a.startDragY);delete a.draggedBubbles_;a.setDragging_(!1);a.render();goog.Timer.callOnce(a.bumpNeighbours_,
-Blockly.BUMP_DELAY,a);Blockly.fireUiEvent(window,"resize")}a&&a.workspace.fireChangeEvent();Blockly.Block.dragMode_=0};Blockly.Block.prototype.select=function(){goog.asserts.assertObject(this.svg_,"Block is not rendered.");Blockly.selected&&Blockly.selected.unselect();Blockly.selected=this;this.svg_.addSelect();Blockly.fireUiEvent(this.workspace.getCanvas(),"blocklySelectChange")};
+Blockly.BUMP_DELAY,a);Blockly.fireUiEvent(window,"resize")}a&&a.workspace.fireChangeEvent();Blockly.Block.dragMode_=0;Blockly.Css.setCursor(Blockly.Css.Cursor.OPEN)};Blockly.Block.prototype.select=function(){goog.asserts.assertObject(this.svg_,"Block is not rendered.");Blockly.selected&&Blockly.selected.unselect();Blockly.selected=this;this.svg_.addSelect();Blockly.fireUiEvent(this.workspace.getCanvas(),"blocklySelectChange")};
 Blockly.Block.prototype.unselect=function(){goog.asserts.assertObject(this.svg_,"Block is not rendered.");Blockly.selected=null;this.svg_.removeSelect();Blockly.fireUiEvent(this.workspace.getCanvas(),"blocklySelectChange")};
 Blockly.Block.prototype.dispose=function(a,b,c){this.rendered=!1;this.unplug(a,!1);b&&this.svg_&&this.svg_.disposeUiEffect();this.workspace&&!c&&(this.workspace.removeTopBlock(this),this.workspace=null);Blockly.selected==this&&(Blockly.selected=null,Blockly.terminateDrag_());Blockly.ContextMenu.currentBlock==this&&Blockly.ContextMenu.hide();for(a=this.childBlocks_.length-1;0<=a;a--)this.childBlocks_[a].dispose(!1);b=this.getIcons();for(a=0;a<b.length;a++)b[a].dispose();for(a=0;b=this.inputList[a];a++)b.dispose();
 this.inputList=[];b=this.getConnections_(!0);for(a=0;a<b.length;a++)c=b[a],c.targetConnection&&c.disconnect(),b[a].dispose();this.svg_&&(this.svg_.dispose(),this.svg_=null);Blockly.Realtime.isEnabled()&&!Blockly.Realtime.withinSync&&Blockly.Realtime.removeBlock(this)};
@@ -1039,8 +1041,8 @@ Blockly.Block.prototype.getRelativeToSurfaceXY=function(){var a=0,b=0;if(this.sv
 Blockly.Block.prototype.getHeightWidth=function(){var a=this.svg_.height,b=this.svg_.width,c=this.getNextBlock();c&&(c=c.getHeightWidth(),a+=c.height-4,b=Math.max(b,c.width));return{height:a,width:b}};
 Blockly.Block.prototype.onMouseDown_=function(a){if(!this.isInFlyout){Blockly.svgResize();Blockly.terminateDrag_();this.select();Blockly.hideChaff();if(Blockly.isRightButton(a))this.showContextMenu_(a);else if(this.isMovable()){Blockly.removeAllRanges();Blockly.Css.setCursor(Blockly.Css.Cursor.CLOSED);var b=this.getRelativeToSurfaceXY();this.startDragX=b.x;this.startDragY=b.y;this.startDragMouseX=a.clientX;this.startDragMouseY=a.clientY;Blockly.Block.dragMode_=1;Blockly.Block.onMouseUpWrapper_=Blockly.bindEvent_(document,
 "mouseup",this,this.onMouseUp_);Blockly.Block.onMouseMoveWrapper_=Blockly.bindEvent_(document,"mousemove",this,this.onMouseMove_);this.draggedBubbles_=[];for(var b=this.getDescendants(),c=0,d;d=b[c];c++){d=d.getIcons();for(var e=0;e<d.length;e++){var f=d[e].getIconLocation();f.bubble=d[e];this.draggedBubbles_.push(f)}}}else return;a.stopPropagation()}};
-Blockly.Block.prototype.onMouseUp_=function(a){var b=this;Blockly.doCommand(function(){Blockly.terminateDrag_();if(Blockly.selected&&Blockly.highlightedConnection_)Blockly.localConnection_.connect(Blockly.highlightedConnection_),b.svg_&&(Blockly.localConnection_.isSuperior()?Blockly.highlightedConnection_:Blockly.localConnection_).sourceBlock_.svg_.connectionUiEffect(),b.workspace.trashcan&&b.workspace.trashcan.isOpen&&b.workspace.trashcan.close();else if(b.workspace.trashcan&&b.workspace.trashcan.isOpen){var a=
-b.workspace.trashcan;goog.Timer.callOnce(a.close,100,a);Blockly.selected.dispose(!1,!0);Blockly.fireUiEvent(window,"resize")}Blockly.highlightedConnection_&&(Blockly.highlightedConnection_.unhighlight(),Blockly.highlightedConnection_=null)})};Blockly.Block.prototype.showHelp_=function(){var a=goog.isFunction(this.helpUrl)?this.helpUrl():this.helpUrl;a&&window.open(a)};
+Blockly.Block.prototype.onMouseUp_=function(a){var b=this;Blockly.doCommand(function(){if(Blockly.selected&&Blockly.highlightedConnection_)Blockly.localConnection_.connect(Blockly.highlightedConnection_),b.svg_&&(Blockly.localConnection_.isSuperior()?Blockly.highlightedConnection_:Blockly.localConnection_).sourceBlock_.svg_.connectionUiEffect(),b.workspace.trashcan&&b.workspace.trashcan.close();else if(b.workspace.isDeleteArea(a)){var c=b.workspace.trashcan;c&&goog.Timer.callOnce(c.close,100,c);Blockly.selected.dispose(!1,
+!0);Blockly.fireUiEvent(window,"resize")}Blockly.highlightedConnection_&&(Blockly.highlightedConnection_.unhighlight(),Blockly.highlightedConnection_=null);Blockly.terminateDrag_()})};Blockly.Block.prototype.showHelp_=function(){var a=goog.isFunction(this.helpUrl)?this.helpUrl():this.helpUrl;a&&window.open(a)};
 Blockly.Block.prototype.duplicate_=function(){var a=Blockly.Xml.blockToDom_(this);Blockly.Xml.deleteNext(a);var a=Blockly.Xml.domToBlock(this.workspace,a),b=this.getRelativeToSurfaceXY();b.x=Blockly.RTL?b.x-Blockly.SNAP_RADIUS:b.x+Blockly.SNAP_RADIUS;b.y+=2*Blockly.SNAP_RADIUS;a.moveBy(b.x,b.y);a.select();return a};
 Blockly.Block.prototype.showContextMenu_=function(a){if(!Blockly.readOnly&&this.contextMenu){var b=this,c=[];if(this.isDeletable()&&this.isMovable()&&!b.isInFlyout){var d={text:Blockly.Msg.DUPLICATE_BLOCK,enabled:!0,callback:function(){b.duplicate_()}};this.getDescendants().length>this.workspace.remainingCapacity()&&(d.enabled=!1);c.push(d);this.isEditable()&&!this.collapsed_&&Blockly.comments&&(d={enabled:!0},this.comment?(d.text=Blockly.Msg.REMOVE_COMMENT,d.callback=function(){b.setCommentText(null)}):
 (d.text=Blockly.Msg.ADD_COMMENT,d.callback=function(){b.setCommentText("")}),c.push(d));if(!this.collapsed_)for(d=0;d<this.inputList.length;d++)if(this.inputList[d].type==Blockly.INPUT_VALUE){d={enabled:!0};d.text=this.inputsInline?Blockly.Msg.EXTERNAL_INPUTS:Blockly.Msg.INLINE_INPUTS;d.callback=function(){b.setInputsInline(!b.inputsInline)};c.push(d);break}Blockly.collapse&&(this.collapsed_?(d={enabled:!0},d.text=Blockly.Msg.EXPAND_BLOCK,d.callback=function(){b.setCollapsed(!1)}):(d={enabled:!0},
@@ -1048,9 +1050,9 @@ d.text=Blockly.Msg.COLLAPSE_BLOCK,d.callback=function(){b.setCollapsed(!0)}),c.p
 !0)}};c.push(d)}d={enabled:!(goog.isFunction(this.helpUrl)?!this.helpUrl():!this.helpUrl)};d.text=Blockly.Msg.HELP;d.callback=function(){b.showHelp_()};c.push(d);this.customContextMenu&&!b.isInFlyout&&this.customContextMenu(c);Blockly.ContextMenu.show(a,c);Blockly.ContextMenu.currentBlock=this}};
 Blockly.Block.prototype.getConnections_=function(a){var b=[];if(a||this.rendered)if(this.outputConnection&&b.push(this.outputConnection),this.nextConnection&&b.push(this.nextConnection),this.previousConnection&&b.push(this.previousConnection),a||!this.collapsed_){a=0;for(var c;c=this.inputList[a];a++)c.connection&&b.push(c.connection)}return b};
 Blockly.Block.prototype.moveConnections_=function(a,b){if(this.rendered){for(var c=this.getConnections_(!1),d=0;d<c.length;d++)c[d].moveBy(a,b);c=this.getIcons();for(d=0;d<c.length;d++)c[d].computeIconLocation();for(d=0;d<this.childBlocks_.length;d++)this.childBlocks_[d].moveConnections_(a,b)}};Blockly.Block.prototype.setDragging_=function(a){a?this.svg_.addDragging():this.svg_.removeDragging();for(var b=0;b<this.childBlocks_.length;b++)this.childBlocks_[b].setDragging_(a)};
-Blockly.Block.prototype.onMouseMove_=function(a){var b=this;Blockly.doCommand(function(){if(!("mousemove"==a.type&&1>=a.clientX&&0==a.clientY&&0==a.button)){Blockly.removeAllRanges();var c=a.clientX-b.startDragMouseX,d=a.clientY-b.startDragMouseY;1==Blockly.Block.dragMode_&&Math.sqrt(Math.pow(c,2)+Math.pow(d,2))>Blockly.DRAG_RADIUS&&(Blockly.Block.dragMode_=2,b.setParent(null),b.setDragging_(!0));if(2==Blockly.Block.dragMode_){var e=b.startDragX+c,f=b.startDragY+d;b.svg_.getRootElement().setAttribute("transform",
-"translate("+e+", "+f+")");for(e=0;e<b.draggedBubbles_.length;e++)f=b.draggedBubbles_[e],f.bubble.setIconLocation(f.x+c,f.y+d);for(var f=b.getConnections_(!1),g=null,h=null,k=Blockly.SNAP_RADIUS,e=0;e<f.length;e++){var l=f[e],p=l.closest(k,c,d);p.connection&&(g=p.connection,h=l,k=p.radius)}Blockly.highlightedConnection_&&Blockly.highlightedConnection_!=g&&(Blockly.highlightedConnection_.unhighlight(),Blockly.highlightedConnection_=null,Blockly.localConnection_=null);g&&g!=Blockly.highlightedConnection_&&
-(g.highlight(),Blockly.highlightedConnection_=g,Blockly.localConnection_=h);if(b.workspace.trashcan&&b.isDeletable())b.workspace.trashcan.onMouseMove(a)}}a.stopPropagation()})};
+Blockly.Block.prototype.onMouseMove_=function(a){var b=this;Blockly.doCommand(function(){if(!("mousemove"==a.type&&1>=a.clientX&&0==a.clientY&&0==a.button)){Blockly.removeAllRanges();var c=a.clientX-b.startDragMouseX,d=a.clientY-b.startDragMouseY;1==Blockly.Block.dragMode_&&Math.sqrt(Math.pow(c,2)+Math.pow(d,2))>Blockly.DRAG_RADIUS&&(Blockly.Block.dragMode_=2,b.setParent(null),b.setDragging_(!0),b.workspace.recordDeleteAreas());if(2==Blockly.Block.dragMode_){var e=b.startDragX+c,f=b.startDragY+d;
+b.svg_.getRootElement().setAttribute("transform","translate("+e+", "+f+")");for(e=0;e<b.draggedBubbles_.length;e++)f=b.draggedBubbles_[e],f.bubble.setIconLocation(f.x+c,f.y+d);for(var f=b.getConnections_(!1),g=null,h=null,k=Blockly.SNAP_RADIUS,e=0;e<f.length;e++){var l=f[e],p=l.closest(k,c,d);p.connection&&(g=p.connection,h=l,k=p.radius)}Blockly.highlightedConnection_&&Blockly.highlightedConnection_!=g&&(Blockly.highlightedConnection_.unhighlight(),Blockly.highlightedConnection_=null,Blockly.localConnection_=
+null);g&&g!=Blockly.highlightedConnection_&&(g.highlight(),Blockly.highlightedConnection_=g,Blockly.localConnection_=h);b.isDeletable()&&b.workspace.isDeleteArea(a)}}a.stopPropagation()})};
 Blockly.Block.prototype.bumpNeighbours_=function(){if(0==Blockly.Block.dragMode_){var a=this.getRootBlock();if(!a.isInFlyout)for(var b=this.getConnections_(!1),c=0;c<b.length;c++){var d=b[c];d.targetConnection&&d.isSuperior()&&d.targetBlock().bumpNeighbours_();for(var e=d.neighbours_(Blockly.SNAP_RADIUS),f=0;f<e.length;f++){var g=e[f];d.targetConnection&&g.targetConnection||g.sourceBlock_.getRootBlock()!=a&&(d.isSuperior()?g.bumpAwayFrom_(d):d.bumpAwayFrom_(g))}}}};
 Blockly.Block.prototype.getParent=function(){return this.parentBlock_};Blockly.Block.prototype.getSurroundParent=function(){for(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.getRootBlock=function(){var a,b=this;do a=b,b=a.parentBlock_;while(b);return a};Blockly.Block.prototype.getChildren=function(){return this.childBlocks_};
 Blockly.Block.prototype.setParent=function(a){if(this.parentBlock_){for(var b=this.parentBlock_.childBlocks_,c,d=0;c=b[d];d++)if(c==this){b.splice(d,1);break}b=this.getRelativeToSurfaceXY();this.workspace.getCanvas().appendChild(this.svg_.getRootElement());this.svg_.getRootElement().setAttribute("transform","translate("+b.x+", "+b.y+")");this.parentBlock_=null;this.previousConnection&&this.previousConnection.targetConnection&&this.previousConnection.disconnect();this.outputConnection&&this.outputConnection.targetConnection&&
@@ -1148,7 +1150,7 @@ Blockly.Flyout.prototype.onMouseMoveBlock_=function(a){if("mousemove"==a.type&&1
 Blockly.Flyout.prototype.createBlockFunc_=function(a){var b=this;return function(c){if(!Blockly.isRightButton(c)&&!a.disabled){var d=Blockly.Xml.blockToDom_(a),d=Blockly.Xml.domToBlock(b.targetWorkspace_,d),e=a.getSvgRoot();if(!e)throw"originBlock is not rendered.";var e=Blockly.getSvgXY_(e),f=d.getSvgRoot();if(!f)throw"block is not rendered.";f=Blockly.getSvgXY_(f);d.moveBy(e.x-f.x,e.y-f.y);b.autoClose?b.hide():b.filterForCapacity_();d.onMouseDown_(c)}}};
 Blockly.Flyout.prototype.filterForCapacity_=function(){for(var a=this.targetWorkspace_.remainingCapacity(),b=this.workspace_.getTopBlocks(!1),c=0,d;d=b[c];c++){var e=d.getDescendants().length>a;d.setDisabled(e)}};
 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_),
-Blockly.Flyout.onMouseUpWrapper_=null);Blockly.Flyout.startDownEvent_=null;Blockly.Flyout.startBlock_=null;Blockly.Flyout.startFlyout_=null};
+Blockly.Flyout.onMouseUpWrapper_=null);Blockly.Flyout.startDownEvent_=null;Blockly.Flyout.startBlock_=null;Blockly.Flyout.startFlyout_=null};Blockly.Flyout.prototype.getRect=function(){var a=Blockly.getSvgXY_(this.svgGroup_).x;Blockly.RTL||(a-=1E7);return new goog.math.Rect(a,-1E7,1E7+this.width_,this.height_+2E7)};
 // Copyright 2011 Google Inc.  Apache License 2.0
 Blockly.Toolbox={};Blockly.Toolbox.width=0;Blockly.Toolbox.selectedOption_=null;Blockly.Toolbox.CONFIG_={indentWidth:19,cssRoot:"blocklyTreeRoot",cssHideRoot:"blocklyHidden",cssItem:"",cssTreeRow:"blocklyTreeRow",cssItemLabel:"blocklyTreeLabel",cssTreeIcon:"blocklyTreeIcon",cssExpandedFolderIcon:"blocklyTreeIconOpen",cssFileIcon:"blocklyTreeIconNone",cssSelectedRow:"blocklyTreeSelected"};
 Blockly.Toolbox.createDom=function(a,b){Blockly.Toolbox.HtmlDiv=goog.dom.createDom("div","blocklyToolboxDiv");Blockly.Toolbox.HtmlDiv.setAttribute("dir",Blockly.RTL?"RTL":"LTR");b.appendChild(Blockly.Toolbox.HtmlDiv);Blockly.Toolbox.flyout_=new Blockly.Flyout;a.appendChild(Blockly.Toolbox.flyout_.createDom());Blockly.bindEvent_(Blockly.Toolbox.HtmlDiv,"mousedown",null,function(a){Blockly.isRightButton(a)||a.target==Blockly.Toolbox.HtmlDiv?Blockly.hideChaff(!1):Blockly.hideChaff(!0)})};
@@ -1229,8 +1231,8 @@ Blockly.Realtime.addAuthUi_=function(a){a.style.background="url("+Blockly.pathTo
 Blockly.Realtime.updateCollabUi_=function(){if(Blockly.Realtime.collabElementId){var a=goog.dom.getElement(Blockly.Realtime.collabElementId);goog.dom.removeChildren(a);for(var b=Blockly.Realtime.document_.getCollaborators(),c=0;c<b.length;c++){var d=b[c],e=goog.dom.createDom("img",{src:d.photoUrl||Blockly.pathToMedia+Blockly.Realtime.ANONYMOUS_URL_,alt:d.displayName,title:d.displayName+(d.isMe?" ("+Blockly.Msg.ME+")":"")});e.style.backgroundColor=d.color;goog.dom.appendChild(a,e)}}};
 Blockly.Realtime.onCollaboratorJoined_=function(a){Blockly.Realtime.updateCollabUi_()};Blockly.Realtime.onCollaboratorLeft_=function(a){Blockly.Realtime.updateCollabUi_()};Blockly.Realtime.doCommand=function(a){a()};Blockly.Realtime.genUid=function(a){var b=Blockly.Realtime.sessionId_+"-"+a;return Blockly.Realtime.blocksMap_.has(b)?Blockly.Realtime.genUid("-"+a):b};
 // Copyright 2013 Google Inc.  Apache License 2.0
-Blockly.Css={};Blockly.Css.Cursor={OPEN:"handopen",CLOSED:"handclosed",DELETE:"handdelete"};Blockly.Css.styleSheet_=null;Blockly.Css.mediaPath_="";Blockly.Css.inject=function(){var a=Blockly.Css.CONTENT.join("\n");Blockly.Css.mediaPath_=Blockly.pathToMedia.replace(/[\\\/]$/,"");a=a.replace(/<<<PATH>>>/g,Blockly.Css.mediaPath_);goog.cssom.addCssText(a);a=goog.cssom.getAllCssStyleSheets();Blockly.Css.styleSheet_=a[a.length-1];Blockly.Css.setCursor("handopen")};
-Blockly.Css.setCursor=function(a){Blockly.readOnly||goog.cssom.replaceCssRule("",".blocklyDraggable {\n  cursor: url("+Blockly.Css.mediaPath_+"/"+a+".cur) "+(a==Blockly.Css.Cursor.OPEN?"8 5":"7 3")+", auto;\n}\n",Blockly.Css.styleSheet_,0)};
+Blockly.Css={};Blockly.Css.Cursor={OPEN:"handopen",CLOSED:"handclosed",DELETE:"handdelete"};Blockly.Css.currentCursor_="";Blockly.Css.styleSheet_=null;Blockly.Css.mediaPath_="";Blockly.Css.inject=function(){var a=Blockly.Css.CONTENT.join("\n");Blockly.Css.mediaPath_=Blockly.pathToMedia.replace(/[\\\/]$/,"");a=a.replace(/<<<PATH>>>/g,Blockly.Css.mediaPath_);goog.cssom.addCssText(a);a=goog.cssom.getAllCssStyleSheets();Blockly.Css.styleSheet_=a[a.length-1];Blockly.Css.setCursor("handopen")};
+Blockly.Css.setCursor=function(a){if(!Blockly.readOnly&&Blockly.Css.currentCursor_!=a){Blockly.Css.currentCursor_=a;var b="url("+Blockly.Css.mediaPath_+"/"+a+".cur) "+(a==Blockly.Css.Cursor.OPEN?"8 5":"7 3")+", auto";goog.cssom.replaceCssRule("",".blocklyDraggable {\n  cursor: "+b+";\n}\n",Blockly.Css.styleSheet_,0);Blockly.svg&&(Blockly.svg.style.cursor=a==Blockly.Css.Cursor.OPEN?"":b)}};
 Blockly.Css.CONTENT=[".blocklyDraggable {","}",".blocklySvg {","  background-color: #fff;","  border: 1px solid #ddd;","  overflow: hidden;","}",".blocklyWidgetDiv {","  position: absolute;","  display: none;","  z-index: 999;","}",".blocklyResizeSE {","  fill: #aaa;","  cursor: se-resize;","}",".blocklyResizeSW {","  fill: #aaa;","  cursor: sw-resize;","}",".blocklyResizeLine {","  stroke-width: 1;","  stroke: #888;","}",".blocklyHighlightedConnectionPath {","  stroke-width: 4px;","  stroke: #fc3;",
 "  fill: none;","}",".blocklyPathLight {","  fill: none;","  stroke-width: 2;","  stroke-linecap: round;","}",".blocklySelected>.blocklyPath {","  stroke-width: 3px;","  stroke: #fc3;","}",".blocklySelected>.blocklyPathLight {","  display: none;","}",".blocklyDragging>.blocklyPath,",".blocklyDragging>.blocklyPathLight {","  fill-opacity: .8;","  stroke-opacity: .8;","}",".blocklyDragging>.blocklyPathDark {","  display: none;","}",".blocklyDisabled>.blocklyPath {","  fill-opacity: .5;","  stroke-opacity: .5;",
 "}",".blocklyDisabled>.blocklyPathLight,",".blocklyDisabled>.blocklyPathDark {","  display: none;","}",".blocklyText {","  cursor: default;","  font-family: sans-serif;","  font-size: 11pt;","  fill: #fff;","}",".blocklyNonEditableText>text {","  pointer-events: none;","}",".blocklyNonEditableText>rect,",".blocklyEditableText>rect {","  fill: #fff;","  fill-opacity: .6;","}",".blocklyNonEditableText>text,",".blocklyEditableText>text {","  fill: #000;","}",".blocklyEditableText:hover>rect {","  stroke-width: 2;",
@@ -1263,8 +1265,8 @@ stdDeviation:1,result:"blur"},d);e=Blockly.createSvgElement("feSpecularLighting"
 {id:"blocklyTrashcanShadowFilter"},c);Blockly.createSvgElement("feGaussianBlur",{"in":"SourceAlpha",stdDeviation:2,result:"blur"},d);Blockly.createSvgElement("feOffset",{"in":"blur",dx:1,dy:1,result:"offsetBlur"},d);d=Blockly.createSvgElement("feMerge",{},d);Blockly.createSvgElement("feMergeNode",{"in":"offsetBlur"},d);Blockly.createSvgElement("feMergeNode",{"in":"SourceGraphic"},d);d=Blockly.createSvgElement("filter",{id:"blocklyShadowFilter"},c);Blockly.createSvgElement("feGaussianBlur",{stdDeviation:2},
 d);c=Blockly.createSvgElement("pattern",{id:"blocklyDisabledPattern",patternUnits:"userSpaceOnUse",width:10,height:10},c);Blockly.createSvgElement("rect",{width:10,height:10,fill:"#aaa"},c);Blockly.createSvgElement("path",{d:"M 0 0 L 10 10 M 10 0 L 0 10",stroke:"#cc0"},c);Blockly.mainWorkspace=new Blockly.Workspace(Blockly.getMainWorkspaceMetrics_,Blockly.setMainWorkspaceMetrics_);b.appendChild(Blockly.mainWorkspace.createDom());Blockly.mainWorkspace.maxBlocks=Blockly.maxBlocks;Blockly.readOnly||
 (Blockly.hasCategories?Blockly.Toolbox.createDom(b,a):(Blockly.mainWorkspace.flyout_=new Blockly.Flyout,c=Blockly.mainWorkspace.flyout_,d=c.createDom(),c.autoClose=!1,goog.dom.insertSiblingBefore(d,Blockly.mainWorkspace.svgGroup_),Blockly.addChangeListener(function(){if(0==Blockly.Block.dragMode_){var a=Blockly.mainWorkspace.getMetrics();if(0>a.contentTop||a.contentTop+a.contentHeight>a.viewHeight+a.viewTop||a.contentLeft<(Blockly.RTL?a.viewLeft:0)||a.contentLeft+a.contentWidth>(Blockly.RTL?a.viewWidth:
-a.viewWidth+a.viewLeft))for(var b=Blockly.mainWorkspace.getTopBlocks(!1),c=0,d;d=b[c];c++){var e=d.getRelativeToSurfaceXY(),p=d.getHeightWidth(),m=a.viewTop+25-p.height-e.y;0<m&&d.moveBy(0,m);m=a.viewTop+a.viewHeight-25-e.y;0>m&&d.moveBy(0,m);m=25+a.viewLeft-e.x-(Blockly.RTL?0:p.width);0<m&&d.moveBy(m,0);m=a.viewLeft+a.viewWidth-25-e.x+(Blockly.RTL?p.width:0);0>m&&d.moveBy(m,0);d.isDeletable()&&50<(Blockly.RTL?e.x-a.viewWidth:-e.x)&&d.dispose(!1,!0)}}})));b.appendChild(Blockly.Tooltip.createDom());
-a.appendChild(b);Blockly.svg=b;Blockly.svgResize();Blockly.WidgetDiv.DIV=goog.dom.createDom("div","blocklyWidgetDiv");Blockly.WidgetDiv.DIV.style.direction=Blockly.RTL?"rtl":"ltr";document.body.appendChild(Blockly.WidgetDiv.DIV)};
+a.viewWidth+a.viewLeft))for(var b=Blockly.mainWorkspace.getTopBlocks(!1),c=0,d;d=b[c];c++){var e=d.getRelativeToSurfaceXY(),p=d.getHeightWidth(),m=a.viewTop+25-p.height-e.y;0<m&&d.moveBy(0,m);m=a.viewTop+a.viewHeight-25-e.y;0>m&&d.moveBy(0,m);m=25+a.viewLeft-e.x-(Blockly.RTL?0:p.width);0<m&&d.moveBy(m,0);m=a.viewLeft+a.viewWidth-25-e.x+(Blockly.RTL?p.width:0);0>m&&d.moveBy(m,0)}}})));b.appendChild(Blockly.Tooltip.createDom());a.appendChild(b);Blockly.svg=b;Blockly.svgResize();Blockly.WidgetDiv.DIV=
+goog.dom.createDom("div","blocklyWidgetDiv");Blockly.WidgetDiv.DIV.style.direction=Blockly.RTL?"rtl":"ltr";document.body.appendChild(Blockly.WidgetDiv.DIV)};
 Blockly.init_=function(){Blockly.bindEvent_(Blockly.svg,"mousedown",null,Blockly.onMouseDown_);Blockly.bindEvent_(Blockly.svg,"contextmenu",null,Blockly.onContextMenu_);Blockly.bindEvent_(Blockly.WidgetDiv.DIV,"contextmenu",null,Blockly.onContextMenu_);Blockly.documentEventsBound_||(Blockly.bindEvent_(window,"resize",document,Blockly.svgResize),Blockly.bindEvent_(document,"keydown",null,Blockly.onKeyDown_),document.addEventListener("mouseup",Blockly.onMouseUp_,!1),goog.userAgent.IPAD&&Blockly.bindEvent_(window,
 "orientationchange",document,function(){Blockly.fireUiEvent(window,"resize")}),Blockly.documentEventsBound_=!0);if(Blockly.languageTree)if(Blockly.hasCategories)Blockly.Toolbox.init();else{Blockly.mainWorkspace.flyout_.init(Blockly.mainWorkspace);Blockly.mainWorkspace.flyout_.show(Blockly.languageTree.childNodes);Blockly.mainWorkspace.scrollX=Blockly.mainWorkspace.flyout_.width_;Blockly.RTL&&(Blockly.mainWorkspace.scrollX*=-1);var a="translate("+Blockly.mainWorkspace.scrollX+", 0)";Blockly.mainWorkspace.getCanvas().setAttribute("transform",
 a);Blockly.mainWorkspace.getBubbleCanvas().setAttribute("transform",a)}Blockly.hasScrollbars&&(Blockly.mainWorkspace.scrollbar=new Blockly.ScrollbarPair(Blockly.mainWorkspace),Blockly.mainWorkspace.scrollbar.resize());Blockly.mainWorkspace.addTrashcan();if(Blockly.hasSounds){Blockly.loadAudio_([Blockly.pathToMedia+"click.mp3",Blockly.pathToMedia+"click.wav",Blockly.pathToMedia+"click.ogg"],"click");Blockly.loadAudio_([Blockly.pathToMedia+"delete.mp3",Blockly.pathToMedia+"delete.ogg",Blockly.pathToMedia+
diff --git a/blockly_uncompressed.js b/blockly_uncompressed.js
index 0fbff0cd..ded4f519 100644
--- a/blockly_uncompressed.js
+++ b/blockly_uncompressed.js
@@ -42,7 +42,7 @@ goog.addDependency("../../../" + dir + "/core/field_image.js", ['Blockly.FieldIm
 goog.addDependency("../../../" + dir + "/core/field_label.js", ['Blockly.FieldLabel'], ['Blockly.Field', 'Blockly.Tooltip']);
 goog.addDependency("../../../" + dir + "/core/field_textinput.js", ['Blockly.FieldTextInput'], ['Blockly.Field', 'Blockly.Msg', 'goog.asserts', 'goog.userAgent']);
 goog.addDependency("../../../" + dir + "/core/field_variable.js", ['Blockly.FieldVariable'], ['Blockly.FieldDropdown', 'Blockly.Msg', 'Blockly.Variables']);
-goog.addDependency("../../../" + dir + "/core/flyout.js", ['Blockly.Flyout'], ['Blockly.Block', 'Blockly.Comment', 'goog.userAgent']);
+goog.addDependency("../../../" + dir + "/core/flyout.js", ['Blockly.Flyout'], ['Blockly.Block', 'Blockly.Comment', 'goog.userAgent', 'goog.math.Rect']);
 goog.addDependency("../../../" + dir + "/core/generator.js", ['Blockly.Generator'], ['Blockly.Block']);
 goog.addDependency("../../../" + dir + "/core/icon.js", ['Blockly.Icon'], []);
 goog.addDependency("../../../" + dir + "/core/inject.js", ['Blockly.inject'], ['Blockly.Css', 'goog.dom']);
@@ -56,12 +56,12 @@ goog.addDependency("../../../" + dir + "/core/realtime.js", ['Blockly.Realtime']
 goog.addDependency("../../../" + dir + "/core/scrollbar.js", ['Blockly.Scrollbar', 'Blockly.ScrollbarPair'], ['goog.userAgent']);
 goog.addDependency("../../../" + dir + "/core/toolbox.js", ['Blockly.Toolbox'], ['Blockly.Flyout', 'goog.events.BrowserFeature', 'goog.html.SafeHtml', 'goog.style', 'goog.ui.tree.TreeControl', 'goog.ui.tree.TreeNode']);
 goog.addDependency("../../../" + dir + "/core/tooltip.js", ['Blockly.Tooltip'], []);
-goog.addDependency("../../../" + dir + "/core/trashcan.js", ['Blockly.Trashcan'], ['goog.math', 'goog.Timer']);
+goog.addDependency("../../../" + dir + "/core/trashcan.js", ['Blockly.Trashcan'], ['goog.math', 'goog.math.Rect', 'goog.Timer']);
 goog.addDependency("../../../" + dir + "/core/utils.js", ['Blockly.utils'], []);
 goog.addDependency("../../../" + dir + "/core/variables.js", ['Blockly.Variables'], ['Blockly.Toolbox', 'Blockly.Workspace']);
 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.addDependency("../../../" + dir + "/core/workspace.js", ['Blockly.Workspace'], ['Blockly.ScrollbarPair', 'Blockly.Trashcan', 'Blockly.Xml', 'goog.math']);
+goog.addDependency("../../../" + dir + "/core/workspace.js", ['Blockly.Workspace'], ['Blockly.ScrollbarPair', 'Blockly.Trashcan', 'Blockly.Xml', 'goog.math', 'goog.math.Coordinate']);
 goog.addDependency("../../../" + dir + "/core/xml.js", ['Blockly.Xml'], []);
 goog.addDependency("../../alltests.js", [], []);
 goog.addDependency("base.js", [], []);
diff --git a/core/block.js b/core/block.js
index dfc0a580..0d71fa55 100644
--- a/core/block.js
+++ b/core/block.js
@@ -300,6 +300,7 @@ Blockly.Block.terminateDrag_ = function() {
     selected.workspace.fireChangeEvent();
   }
   Blockly.Block.dragMode_ = 0;
+  Blockly.Css.setCursor(Blockly.Css.Cursor.OPEN);
 };
 
 /**
@@ -557,7 +558,6 @@ Blockly.Block.prototype.onMouseDown_ = function(e) {
 Blockly.Block.prototype.onMouseUp_ = function(e) {
   var this_ = this;
   Blockly.doCommand(function() {
-    Blockly.terminateDrag_();
     if (Blockly.selected && Blockly.highlightedConnection_) {
       // Connect two blocks together.
       Blockly.localConnection_.connect(Blockly.highlightedConnection_);
@@ -572,13 +572,15 @@ Blockly.Block.prototype.onMouseUp_ = function(e) {
         }
         inferiorConnection.sourceBlock_.svg_.connectionUiEffect();
       }
-      if (this_.workspace.trashcan && this_.workspace.trashcan.isOpen) {
+      if (this_.workspace.trashcan) {
         // Don't throw an object in the trash can if it just got connected.
         this_.workspace.trashcan.close();
       }
-    } else if (this_.workspace.trashcan && this_.workspace.trashcan.isOpen) {
+    } else if (this_.workspace.isDeleteArea(e)) {
       var trashcan = this_.workspace.trashcan;
-      goog.Timer.callOnce(trashcan.close, 100, trashcan);
+      if (trashcan) {
+        goog.Timer.callOnce(trashcan.close, 100, trashcan);
+      }
       Blockly.selected.dispose(false, true);
       // Dropping a block on the trash can will usually cause the workspace to
       // resize to contain the newly positioned block.  Force a second resize
@@ -589,6 +591,7 @@ Blockly.Block.prototype.onMouseUp_ = function(e) {
       Blockly.highlightedConnection_.unhighlight();
       Blockly.highlightedConnection_ = null;
     }
+    Blockly.terminateDrag_();
   });
 };
 
@@ -862,6 +865,7 @@ Blockly.Block.prototype.onMouseMove_ = function(e) {
         // Push this block to the very top of the stack.
         this_.setParent(null);
         this_.setDragging_(true);
+        this_.workspace.recordDeleteAreas();
       }
     }
     if (Blockly.Block.dragMode_ == 2) {
@@ -907,9 +911,10 @@ Blockly.Block.prototype.onMouseMove_ = function(e) {
         Blockly.highlightedConnection_ = closestConnection;
         Blockly.localConnection_ = localConnection;
       }
-      // Flip the trash can lid if needed.
-      if (this_.workspace.trashcan && this_.isDeletable()) {
-        this_.workspace.trashcan.onMouseMove(e);
+      // Provide visual indication of whether the block will be deleted if
+      // dropped here.
+      if (this_.isDeletable()) {
+        this_.workspace.isDeleteArea(e);
       }
     }
     // This event has been handled.  No need to bubble up to the document.
diff --git a/core/css.js b/core/css.js
index 0fcbb2ee..37fa2e66 100644
--- a/core/css.js
+++ b/core/css.js
@@ -28,6 +28,7 @@ goog.provide('Blockly.Css');
 
 goog.require('goog.cssom');
 
+
 /**
  * List of cursors.
  * @enum {string}
@@ -38,6 +39,12 @@ Blockly.Css.Cursor = {
   DELETE: 'handdelete'
 };
 
+/**
+ * Current cursor (cached value).
+ * @type string
+ */
+Blockly.Css.currentCursor_ = '';
+
 /**
  * Large stylesheet added by Blockly.Css.inject.
  * @type Element
@@ -75,9 +82,10 @@ Blockly.Css.inject = function() {
  * @param {Blockly.Cursor} cursor Enum.
  */
 Blockly.Css.setCursor = function(cursor) {
-  if (Blockly.readOnly) {
+  if (Blockly.readOnly || Blockly.Css.currentCursor_ == cursor) {
     return;
   }
+  Blockly.Css.currentCursor_ = cursor;
   /*
     Hotspot coordinates are baked into the CUR file, but they are still
     required in the CSS due to a Chrome bug.
@@ -88,10 +96,19 @@ Blockly.Css.setCursor = function(cursor) {
   } else {
     var xy = '7 3';
   }
-  var rule = '.blocklyDraggable {\n' +
-      '  cursor: url(' + Blockly.Css.mediaPath_ + '/' + cursor + '.cur)' +
-      ' ' + xy + ', auto;\n}\n';
+  var url = 'url(' + Blockly.Css.mediaPath_ + '/' + cursor +
+      '.cur) ' + xy + ', auto';
+  var rule = '.blocklyDraggable {\n  cursor: ' + url + ';\n}\n';
   goog.cssom.replaceCssRule('', rule, Blockly.Css.styleSheet_, 0);
+  if (Blockly.svg) {
+    // Set cursor on the SVG surface as well, so that rapid movements
+    // don't result in cursor changing to an arrow momentarily.
+    if (cursor == Blockly.Css.Cursor.OPEN) {
+      Blockly.svg.style.cursor = '';
+    } else {
+      Blockly.svg.style.cursor = url;
+    }
+  }
 };
 
 /**
diff --git a/core/flyout.js b/core/flyout.js
index ca35af72..e316e322 100644
--- a/core/flyout.js
+++ b/core/flyout.js
@@ -29,6 +29,7 @@ goog.provide('Blockly.Flyout');
 goog.require('Blockly.Block');
 goog.require('Blockly.Comment');
 goog.require('goog.userAgent');
+goog.require('goog.math.Rect');
 
 
 /**
@@ -670,3 +671,20 @@ Blockly.Flyout.terminateDrag_ = function() {
   Blockly.Flyout.startBlock_ = null;
   Blockly.Flyout.startFlyout_ = null;
 };
+
+/**
+ * Return the deletion rectangle for this flyout.
+ * @return {goog.math.Rect} Rectangle in which to delete.
+ */
+Blockly.Flyout.prototype.getRect = function() {
+  // BIG_NUM is offscreen padding so that blocks dragged beyond the shown flyout
+  // area are still deleted.  Must be smaller than Infinity, but larger than
+  // the largest screen size.
+  var BIG_NUM = 10000000;
+  var x = Blockly.getSvgXY_(this.svgGroup_).x;
+  if (!Blockly.RTL) {
+    x -= BIG_NUM;
+  }
+  return new goog.math.Rect(x, -BIG_NUM,
+      BIG_NUM + this.width_, this.height_ + 2 * BIG_NUM);
+};
diff --git a/core/inject.js b/core/inject.js
index 50cc9906..8d3cdfa5 100644
--- a/core/inject.js
+++ b/core/inject.js
@@ -327,11 +327,6 @@ Blockly.createDom_ = function(container) {
               if (overflow < 0) {
                 block.moveBy(overflow, 0);
               }
-              // Delete any block that's sitting on top of the flyout.
-              if (block.isDeletable() && (Blockly.RTL ?
-                  blockXY.x - metrics.viewWidth : -blockXY.x) > MARGIN * 2) {
-                block.dispose(false, true);
-              }
             }
           }
         }
diff --git a/core/mutator.js b/core/mutator.js
index c4137ab9..72be1c2e 100644
--- a/core/mutator.js
+++ b/core/mutator.js
@@ -118,9 +118,9 @@ Blockly.Mutator.prototype.createEditor_ = function() {
   var mutator = this;
   this.workspace_ = new Blockly.Workspace(
       function() {return mutator.getFlyoutMetrics_();}, null);
-  this.flyout_ = new Blockly.Flyout();
-  this.flyout_.autoClose = false;
-  this.svgDialog_.appendChild(this.flyout_.createDom());
+  this.workspace_.flyout_ = new Blockly.Flyout();
+  this.workspace_.flyout_.autoClose = false;
+  this.svgDialog_.appendChild(this.workspace_.flyout_.createDom());
   this.svgDialog_.appendChild(this.workspace_.createDom());
   return this.svgDialog_;
 };
@@ -148,7 +148,7 @@ Blockly.Mutator.prototype.updateEditable = function() {
 Blockly.Mutator.prototype.resizeBubble_ = function() {
   var doubleBorderWidth = 2 * Blockly.Bubble.BORDER_WIDTH;
   var workspaceSize = this.workspace_.getCanvas().getBBox();
-  var flyoutMetrics = this.flyout_.getMetrics_();
+  var flyoutMetrics = this.workspace_.flyout_.getMetrics_();
   var width;
   if (Blockly.RTL) {
     width = -workspaceSize.x;
@@ -193,8 +193,8 @@ Blockly.Mutator.prototype.setVisible = function(visible) {
         this.createEditor_(), this.block_.svg_.svgPath_,
         this.iconX_, this.iconY_, null, null);
     var thisObj = this;
-    this.flyout_.init(this.workspace_);
-    this.flyout_.show(this.quarkXml_);
+    this.workspace_.flyout_.init(this.workspace_);
+    this.workspace_.flyout_.show(this.quarkXml_);
 
     this.rootBlock_ = this.block_.decompose(this.workspace_);
     var blocks = this.rootBlock_.getDescendants();
@@ -204,8 +204,8 @@ Blockly.Mutator.prototype.setVisible = function(visible) {
     // The root block should not be dragable or deletable.
     this.rootBlock_.setMovable(false);
     this.rootBlock_.setDeletable(false);
-    var margin = this.flyout_.CORNER_RADIUS * 2;
-    var x = this.flyout_.width_ + margin;
+    var margin = this.workspace_.flyout_.CORNER_RADIUS * 2;
+    var x = this.workspace_.flyout_.width_ + margin;
     if (Blockly.RTL) {
       x = -x;
     }
@@ -226,8 +226,6 @@ Blockly.Mutator.prototype.setVisible = function(visible) {
   } else {
     // Dispose of the bubble.
     this.svgDialog_ = null;
-    this.flyout_.dispose();
-    this.flyout_ = null;
     this.workspace_.dispose();
     this.workspace_ = null;
     this.rootBlock_ = null;
@@ -244,7 +242,7 @@ Blockly.Mutator.prototype.setVisible = function(visible) {
 
 /**
  * Update the source block when the mutator's blocks are changed.
- * Delete or bump any block that's out of bounds.
+ * Bump down any block that's too high.
  * Fired whenever a change is made to the mutator's workspace.
  * @private
  */
@@ -255,12 +253,7 @@ Blockly.Mutator.prototype.workspaceChanged_ = function() {
     for (var b = 0, block; block = blocks[b]; b++) {
       var blockXY = block.getRelativeToSurfaceXY();
       var blockHW = block.getHeightWidth();
-      if (block.isDeletable() && (Blockly.RTL ?
-            blockXY.x > -this.flyout_.width_ + MARGIN :
-            blockXY.x < this.flyout_.width_ - MARGIN)) {
-        // Delete any block that's sitting on top of the flyout.
-        block.dispose(false, true);
-      } else if (blockXY.y + blockHW.height < MARGIN) {
+      if (blockXY.y + blockHW.height < MARGIN) {
         // Bump any block that's above the top back inside.
         block.moveBy(0, MARGIN - blockHW.height - blockXY.y);
       }
diff --git a/core/trashcan.js b/core/trashcan.js
index 5f2a9f5d..e09fd0ba 100644
--- a/core/trashcan.js
+++ b/core/trashcan.js
@@ -27,6 +27,7 @@
 goog.provide('Blockly.Trashcan');
 
 goog.require('goog.math');
+goog.require('goog.math.Rect');
 goog.require('goog.Timer');
 
 
@@ -238,32 +239,16 @@ Blockly.Trashcan.prototype.position_ = function() {
 };
 
 /**
- * Determines if the mouse is currently over the trash can.
- * Opens/closes the lid and sets the isOpen flag.
- * @param {!Event} e Mouse move event.
+ * Return the deletion rectangle for this trashcan.
+ * @return {goog.math.Rect} Rectangle in which to delete.
  */
-Blockly.Trashcan.prototype.onMouseMove = function(e) {
-  /*
-  An alternative approach would be to use onMouseOver and onMouseOut events.
-  However the selected block will be between the mouse and the trash can,
-  thus these events won't fire.
-  Another approach is to use HTML5's drag & drop API, but it's widely hated.
-  Instead, we'll just have the block's drag_ function call us.
-  */
-  if (!this.svgGroup_) {
-    return;
-  }
-  var mouseXY = Blockly.mouseToSvg(e);
+Blockly.Trashcan.prototype.getRect = function() {
   var trashXY = Blockly.getSvgXY_(this.svgGroup_);
-  var over = (mouseXY.x > trashXY.x - this.MARGIN_HOTSPOT_) &&
-             (mouseXY.x < trashXY.x + this.WIDTH_ + this.MARGIN_HOTSPOT_) &&
-             (mouseXY.y > trashXY.y - this.MARGIN_HOTSPOT_) &&
-             (mouseXY.y < trashXY.y + this.BODY_HEIGHT_ + this.LID_HEIGHT_ +
-              this.MARGIN_HOTSPOT_);
-  // For bonus points we might want to match the trapezoidal outline.
-  if (this.isOpen != over) {
-    this.setOpen_(over);
-  }
+  return new goog.math.Rect(
+      trashXY.x - this.MARGIN_HOTSPOT_,
+      trashXY.y - this.MARGIN_HOTSPOT_,
+      this.WIDTH_ + 2 * this.MARGIN_HOTSPOT_,
+      this.BODY_HEIGHT_ + this.LID_HEIGHT_ + 2 * this.MARGIN_HOTSPOT_);
 };
 
 /**
@@ -278,8 +263,6 @@ Blockly.Trashcan.prototype.setOpen_ = function(state) {
   goog.Timer.clear(this.lidTask_);
   this.isOpen = state;
   this.animateLid_();
-  Blockly.Css.setCursor(state ? Blockly.Css.Cursor.DELETE :
-                        Blockly.Css.Cursor.CLOSED);
 };
 
 /**
diff --git a/core/workspace.js b/core/workspace.js
index d1a123f0..6babbeaa 100644
--- a/core/workspace.js
+++ b/core/workspace.js
@@ -32,6 +32,7 @@ goog.require('Blockly.ScrollbarPair');
 goog.require('Blockly.Trashcan');
 goog.require('Blockly.Xml');
 goog.require('goog.math');
+goog.require('goog.math.Coordinate');
 
 
 /**
@@ -134,6 +135,10 @@ Blockly.Workspace.prototype.dispose = function() {
   }
   this.svgBlockCanvas_ = null;
   this.svgBubbleCanvas_ = null;
+  if (this.flyout_) {
+    this.flyout_.dispose();
+    this.flyout_ = null;
+  }
   if (this.trashcan) {
     this.trashcan.dispose();
     this.trashcan = null;
@@ -396,5 +401,49 @@ Blockly.Workspace.prototype.remainingCapacity = function() {
   return this.maxBlocks - this.getAllBlocks().length;
 };
 
+/**
+ * Make a list of all the delete areas for this workspace.
+ */
+Blockly.Workspace.prototype.recordDeleteAreas = function() {
+  if (this.trashcan) {
+    this.deleteAreaTrash_ = this.trashcan.getRect();
+  } else {
+    this.deleteAreaTrash_ = null;
+  }
+  if (this.flyout_) {
+    this.deleteAreaToolbox_ = this.flyout_.getRect();
+  } else {
+    this.deleteAreaToolbox_ = null;
+  }
+};
+
+/**
+ * Is the mouse event over a delete area (toolbar or non-closing flyout)?
+ * Opens or closes the trashcan and sets the cursor as a side effect.
+ * @param {!Event} e Mouse move event.
+ * @return {boolean} True if event is in a delete area.
+ */
+Blockly.Workspace.prototype.isDeleteArea = function(e) {
+  var isDelete = false;
+  var mouseXY = Blockly.mouseToSvg(e);
+  var xy = new goog.math.Coordinate(mouseXY.x, mouseXY.y);
+  if (this.deleteAreaTrash_) {
+    if (this.deleteAreaTrash_.contains(xy)) {
+      this.trashcan.setOpen_(true);
+      Blockly.Css.setCursor(Blockly.Css.Cursor.DELETE);
+      return true;
+    }
+    this.trashcan.setOpen_(false);
+  }
+  if (this.deleteAreaToolbox_) {
+    if (this.deleteAreaToolbox_.contains(xy)) {
+      Blockly.Css.setCursor(Blockly.Css.Cursor.DELETE);
+      return true;
+    }
+  }
+  Blockly.Css.setCursor(Blockly.Css.Cursor.CLOSED);
+  return false;
+};
+
 // Export symbols that would otherwise be renamed by Closure compiler.
 Blockly.Workspace.prototype['clear'] = Blockly.Workspace.prototype.clear;