From 1fac3112247ab75d08745d31cff8a1d43a81d4cf Mon Sep 17 00:00:00 2001
From: Neil Fraser <fraser@google.com>
Date: Tue, 23 Dec 2014 17:02:53 -0800
Subject: [PATCH] Convert cumbersome conditionals into calls to
 goog.getObjectByName.

---
 blockly_compressed.js | 4 ++--
 core/scrollbar.js     | 6 +++---
 core/utils.js         | 3 +--
 3 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/blockly_compressed.js b/blockly_compressed.js
index bea88921f..7d8054d6b 100644
--- a/blockly_compressed.js
+++ b/blockly_compressed.js
@@ -909,7 +909,7 @@ Blockly.ScrollbarPair.prototype.resize=function(){var a=this.workspace_.getMetri
 this.oldHostMetrics_.contentHeight==a.contentHeight&&this.oldHostMetrics_.viewTop==a.viewTop&&this.oldHostMetrics_.contentTop==a.contentTop||(c=!0)):c=b=!0;b&&this.hScroll.resize(a);c&&this.vScroll.resize(a);this.oldHostMetrics_&&this.oldHostMetrics_.viewWidth==a.viewWidth&&this.oldHostMetrics_.absoluteLeft==a.absoluteLeft||this.corner_.setAttribute("x",this.vScroll.xCoordinate);this.oldHostMetrics_&&this.oldHostMetrics_.viewHeight==a.viewHeight&&this.oldHostMetrics_.absoluteTop==a.absoluteTop||this.corner_.setAttribute("y",
 this.hScroll.yCoordinate);this.oldHostMetrics_=a}};Blockly.ScrollbarPair.prototype.set=function(a,b){this.hScroll.set(a);this.vScroll.set(b)};
 Blockly.Scrollbar=function(a,b,c){this.workspace_=a;this.pair_=c||!1;this.horizontal_=b;this.createDom_();b?(this.svgBackground_.setAttribute("height",Blockly.Scrollbar.scrollbarThickness),this.svgKnob_.setAttribute("height",Blockly.Scrollbar.scrollbarThickness-6),this.svgKnob_.setAttribute("y",3)):(this.svgBackground_.setAttribute("width",Blockly.Scrollbar.scrollbarThickness),this.svgKnob_.setAttribute("width",Blockly.Scrollbar.scrollbarThickness-6),this.svgKnob_.setAttribute("x",3));this.onMouseDownBarWrapper_=
-Blockly.bindEvent_(this.svgBackground_,"mousedown",this,this.onMouseDownBar_);this.onMouseDownKnobWrapper_=Blockly.bindEvent_(this.svgKnob_,"mousedown",this,this.onMouseDownKnob_)};this.document&&(Blockly.Scrollbar.scrollbarThickness="ontouchstart"in this.document.documentElement?25:15);
+Blockly.bindEvent_(this.svgBackground_,"mousedown",this,this.onMouseDownBar_);this.onMouseDownKnobWrapper_=Blockly.bindEvent_(this.svgKnob_,"mousedown",this,this.onMouseDownKnob_)};Blockly.Scrollbar.scrollbarThickness=15;goog.getObjectByName("document.documentElement.ontouchstart")&&(Blockly.Scrollbar.scrollbarThickness=25);
 Blockly.Scrollbar.prototype.dispose=function(){this.onMouseUpKnob_();this.onResizeWrapper_&&(Blockly.unbindEvent_(this.onResizeWrapper_),this.onResizeWrapper_=null);Blockly.unbindEvent_(this.onMouseDownBarWrapper_);this.onMouseDownBarWrapper_=null;Blockly.unbindEvent_(this.onMouseDownKnobWrapper_);this.onMouseDownKnobWrapper_=null;goog.dom.removeNode(this.svgGroup_);this.workspace_=this.svgKnob_=this.svgBackground_=this.svgGroup_=null};
 Blockly.Scrollbar.prototype.resize=function(a){if(!a&&(a=this.workspace_.getMetrics(),!a))return;if(this.horizontal_){var b=a.viewWidth;this.pair_?b-=Blockly.Scrollbar.scrollbarThickness:this.setVisible(b<a.contentHeight);this.ratio_=b/a.contentWidth;if(-Infinity===this.ratio_||Infinity===this.ratio_||isNaN(this.ratio_))this.ratio_=0;var c=a.viewWidth*this.ratio_,d=(a.viewLeft-a.contentLeft)*this.ratio_;this.svgKnob_.setAttribute("width",Math.max(0,c));this.xCoordinate=a.absoluteLeft;this.pair_&&
 Blockly.RTL&&(this.xCoordinate+=a.absoluteLeft+Blockly.Scrollbar.scrollbarThickness);this.yCoordinate=a.absoluteTop+a.viewHeight-Blockly.Scrollbar.scrollbarThickness;this.svgGroup_.setAttribute("transform","translate("+this.xCoordinate+", "+this.yCoordinate+")");this.svgBackground_.setAttribute("width",Math.max(0,b));this.svgKnob_.setAttribute("x",this.constrainKnob_(d))}else{b=a.viewHeight;this.pair_?b-=Blockly.Scrollbar.scrollbarThickness:this.setVisible(b<a.contentHeight);this.ratio_=b/a.contentHeight;
@@ -1282,7 +1282,7 @@ Blockly.updateToolbox=function(a){if(a=Blockly.parseToolboxTree_(a)){if(!Blockly
 // Copyright 2012 Google Inc.  Apache License 2.0
 Blockly.utils={};Blockly.addClass_=function(a,b){var c=a.getAttribute("class")||"";-1==(" "+c+" ").indexOf(" "+b+" ")&&(c&&(c+=" "),a.setAttribute("class",c+b))};Blockly.removeClass_=function(a,b){var c=a.getAttribute("class");if(-1!=(" "+c+" ").indexOf(" "+b+" ")){for(var c=c.split(/\s+/),d=0;d<c.length;d++)c[d]&&c[d]!=b||(c.splice(d,1),d--);c.length?a.setAttribute("class",c.join(" ")):a.removeAttribute("class")}};
 Blockly.bindEvent_=function(a,b,c,d){var e=function(a){d.apply(c,arguments)};a.addEventListener(b,e,!1);var f=[[a,b,e]];if(b in Blockly.bindEvent_.TOUCH_MAP)for(var e=function(a){if(1==a.changedTouches.length){var b=a.changedTouches[0];a.clientX=b.clientX;a.clientY=b.clientY}d.apply(c,arguments);a.preventDefault()},g=0,h;h=Blockly.bindEvent_.TOUCH_MAP[b][g];g++)a.addEventListener(h,e,!1),f.push([a,h,e]);return f};Blockly.bindEvent_.TOUCH_MAP={};
-this.document&&this.document.documentElement&&"ontouchstart"in document.documentElement&&(Blockly.bindEvent_.TOUCH_MAP={mousedown:["touchstart"],mousemove:["touchmove"],mouseup:["touchend","touchcancel"]});Blockly.unbindEvent_=function(a){for(;a.length;){var b=a.pop(),c=b[2];b[0].removeEventListener(b[1],c,!1)}return c};
+goog.getObjectByName("document.documentElement.ontouchstart")&&(Blockly.bindEvent_.TOUCH_MAP={mousedown:["touchstart"],mousemove:["touchmove"],mouseup:["touchend","touchcancel"]});Blockly.unbindEvent_=function(a){for(;a.length;){var b=a.pop(),c=b[2];b[0].removeEventListener(b[1],c,!1)}return c};
 Blockly.fireUiEventNow=function(a,b){var c=document;if(c.createEvent)c=c.createEvent("UIEvents"),c.initEvent(b,!0,!0),a.dispatchEvent(c);else if(c.createEventObject)c=c.createEventObject(),a.fireEvent("on"+b,c);else throw"FireEvent: No event creation mechanism.";};Blockly.fireUiEvent=function(a,b){setTimeout(function(){Blockly.fireUiEventNow(a,b)},0)};Blockly.noEvent=function(a){a.preventDefault();a.stopPropagation()};
 Blockly.getRelativeXY_=function(a){var b={x:0,y:0},c=a.getAttribute("x");c&&(b.x=parseInt(c,10));if(c=a.getAttribute("y"))b.y=parseInt(c,10);if(a=(a=a.getAttribute("transform"))&&a.match(/translate\(\s*([-\d.]+)([ ,]\s*([-\d.]+)\s*\))?/))b.x+=parseInt(a[1],10),a[3]&&(b.y+=parseInt(a[3],10));return b};Blockly.getSvgXY_=function(a){var b=0,c=0;do{var d=Blockly.getRelativeXY_(a),b=b+d.x,c=c+d.y;a=a.parentNode}while(a&&a!=Blockly.svg);return{x:b,y:c}};
 Blockly.getAbsoluteXY_=function(a){a=Blockly.getSvgXY_(a);return Blockly.convertCoordinates(a.x,a.y,!1)};Blockly.createSvgElement=function(a,b,c){a=document.createElementNS(Blockly.SVG_NS,a);for(var d in b)a.setAttribute(d,b[d]);document.body.runtimeStyle&&(a.runtimeStyle=a.currentStyle=a.style);c&&c.appendChild(a);return a};Blockly.isRightButton=function(a){return 2==a.button||a.ctrlKey};
diff --git a/core/scrollbar.js b/core/scrollbar.js
index 593935393..c0bd4ba9a 100644
--- a/core/scrollbar.js
+++ b/core/scrollbar.js
@@ -178,9 +178,9 @@ Blockly.Scrollbar = function(workspace, horizontal, opt_pair) {
  * Increase the size of scrollbars on touch devices.
  * Don't define if there is no document object (e.g. node.js).
  */
-if (this.document) {
-  Blockly.Scrollbar.scrollbarThickness =
-      ('ontouchstart' in this.document.documentElement) ? 25 : 15;
+Blockly.Scrollbar.scrollbarThickness = 15
+if (goog.getObjectByName('document.documentElement.ontouchstart')) {
+  Blockly.Scrollbar.scrollbarThickness = 25
 }
 
 /**
diff --git a/core/utils.js b/core/utils.js
index 31e547b0b..ef430bbd0 100644
--- a/core/utils.js
+++ b/core/utils.js
@@ -115,8 +115,7 @@ Blockly.bindEvent_ = function(node, name, thisObject, func) {
  * @type {Object}
  */
 Blockly.bindEvent_.TOUCH_MAP = {};
-if (this.document && this.document.documentElement &&
-    'ontouchstart' in document.documentElement) {
+if (goog.getObjectByName('document.documentElement.ontouchstart')) {
   Blockly.bindEvent_.TOUCH_MAP = {
     'mousedown': ['touchstart'],
     'mousemove': ['touchmove'],