From da122e2a31dfb626e487bc3f6df5b49e7b0649e4 Mon Sep 17 00:00:00 2001
From: Neil Fraser <fraser@google.com>
Date: Tue, 17 Mar 2015 15:37:33 -0700
Subject: [PATCH] Enable long-press context menus.

---
 blockly_compressed.js | 49 +++++++++++++++++++++--------------------
 core/block_svg.js     |  4 ++++
 core/blockly.js       | 51 +++++++++++++++++++++++++++++++++++++++++++
 core/inject.js        |  6 ++++-
 4 files changed, 85 insertions(+), 25 deletions(-)

diff --git a/blockly_compressed.js b/blockly_compressed.js
index babc3efba..3f9a946e0 100644
--- a/blockly_compressed.js
+++ b/blockly_compressed.js
@@ -994,7 +994,7 @@ Blockly.Block.prototype.bumpNeighbours_=function(){if(this.workspace&&0==Blockly
 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}this.parentBlock_=null;this.previousConnection&&this.previousConnection.targetConnection&&this.previousConnection.disconnect();this.outputConnection&&this.outputConnection.targetConnection&&this.outputConnection.disconnect()}else goog.array.contains(this.workspace.getTopBlocks(!1),this)&&this.workspace.removeTopBlock(this);(this.parentBlock_=
 a)?a.childBlocks_.push(this):this.workspace.addTopBlock(this)};Blockly.Block.prototype.getDescendants=function(){for(var a=[this],b,c=0;b=this.childBlocks_[c];c++)a.push.apply(a,b.getDescendants());return a};Blockly.Block.prototype.isDeletable=function(){return this.deletable_&&!Blockly.readOnly};Blockly.Block.prototype.setDeletable=function(a){this.deletable_=a;this.svg_&&this.svg_.updateMovable()};Blockly.Block.prototype.isMovable=function(){return this.movable_&&!Blockly.readOnly};
-Blockly.Block.prototype.setMovable=function(a){this.movable_=a};Blockly.Block.prototype.isEditable=function(){return this.editable_&&!Blockly.readOnly};Blockly.Block.prototype.setEditable=function(a){this.editable_=a;a=0;for(var b;b=this.inputList[a];a++)for(var c=0,d;d=b.fieldRow[c];c++)d.updateEditable();b=this.getIcons();for(a=0;a<b.length;a++)b[a].updateEditable()};
+Blockly.Block.prototype.setMovable=function(a){this.movable_=a};Blockly.Block.prototype.isEditable=function(){return this.editable_&&!Blockly.readOnly};Blockly.Block.prototype.setEditable=function(a){this.editable_=a;a=0;for(var b;b=this.inputList[a];a++)for(var c=0,d;d=b.fieldRow[c];c++)d.updateEditable();if(this.rendered)for(b=this.getIcons(),a=0;a<b.length;a++)b[a].updateEditable()};
 Blockly.Block.prototype.setConnectionsHidden=function(a){if(!a&&this.isCollapsed()){if(this.outputConnection&&this.outputConnection.setHidden(a),this.previousConnection&&this.previousConnection.setHidden(a),this.nextConnection){this.nextConnection.setHidden(a);var b=this.nextConnection.targetBlock();b&&b.setConnectionsHidden(a)}}else for(var c=this.getConnections_(!0),d=0;b=c[d];d++)b.setHidden(a),b.isSuperior()&&(b=b.targetBlock())&&b.setConnectionsHidden(a)};
 Blockly.Block.prototype.setHelpUrl=function(a){this.helpUrl=a};Blockly.Block.prototype.setTooltip=function(a){this.tooltip=a};Blockly.Block.prototype.getColour=function(){return this.colourHue_};Blockly.Block.prototype.setColour=function(a){this.colourHue_=a;this.rendered&&this.updateColour()};Blockly.Block.prototype.getField_=function(a){for(var b=0,c;c=this.inputList[b];b++)for(var d=0,e;e=c.fieldRow[d];d++)if(e.name===a)return e;return null};
 Blockly.Block.prototype.getFieldValue=function(a){return(a=this.getField_(a))?a.getValue():null};Blockly.Block.prototype.getTitleValue=function(a){console.log("Deprecated call to getTitleValue, use getFieldValue instead.");return this.getFieldValue(a)};Blockly.Block.prototype.setFieldValue=function(a,b){var c=this.getField_(b);goog.asserts.assertObject(c,'Field "%s" not found.',b);c.setValue(a)};
@@ -1023,9 +1023,9 @@ Blockly.ContextMenu.hide=function(){Blockly.WidgetDiv.hideIfOwner(Blockly.Contex
 // Copyright 2012 Google Inc.  Apache License 2.0
 Blockly.BlockSvg=function(){this.svgGroup_=Blockly.createSvgElement("g",{},null);this.svgPathDark_=Blockly.createSvgElement("path",{"class":"blocklyPathDark",transform:"translate(1, 1)"},this.svgGroup_);this.svgPath_=Blockly.createSvgElement("path",{"class":"blocklyPath"},this.svgGroup_);this.svgPathLight_=Blockly.createSvgElement("path",{"class":"blocklyPathLight"},this.svgGroup_);this.svgPath_.tooltip=this;Blockly.Tooltip.bindMouseEvents(this.svgPath_);this.updateMovable()};
 goog.inherits(Blockly.BlockSvg,Blockly.Block);Blockly.BlockSvg.prototype.height=0;Blockly.BlockSvg.prototype.width=0;Blockly.BlockSvg.INLINE=-1;
-Blockly.BlockSvg.prototype.initSvg=function(){goog.asserts.assert(this.workspace.rendered,"Workspace is headless.");for(var a=0,b;b=this.inputList[a];a++)b.init();this.mutator&&this.mutator.createIcon();this.updateColour();Blockly.readOnly||this.eventsInit_||Blockly.bindEvent_(this.getSvgRoot(),"mousedown",this,this.onMouseDown_);goog.isFunction(this.onchange)&&!this.eventsInit_&&Blockly.bindEvent_(this.workspace.getCanvas(),"blocklyWorkspaceChange",this,this.onchange);this.eventsInit_=!0;this.getSvgRoot().parentNode||
-this.workspace.getCanvas().appendChild(this.getSvgRoot())};Blockly.BlockSvg.prototype.select=function(){Blockly.selected&&Blockly.selected.unselect();Blockly.selected=this;this.addSelect();Blockly.fireUiEvent(this.workspace.getCanvas(),"blocklySelectChange")};Blockly.BlockSvg.prototype.unselect=function(){Blockly.selected=null;this.removeSelect();Blockly.fireUiEvent(this.workspace.getCanvas(),"blocklySelectChange")};Blockly.BlockSvg.prototype.mutator=null;Blockly.BlockSvg.prototype.comment=null;
-Blockly.BlockSvg.prototype.warning=null;Blockly.BlockSvg.prototype.getIcons=function(){var a=[];this.mutator&&a.push(this.mutator);this.comment&&a.push(this.comment);this.warning&&a.push(this.warning);return a};Blockly.BlockSvg.onMouseUpWrapper_=null;Blockly.BlockSvg.onMouseMoveWrapper_=null;
+Blockly.BlockSvg.prototype.initSvg=function(){goog.asserts.assert(this.workspace.rendered,"Workspace is headless.");for(var a=0,b;b=this.inputList[a];a++)b.init();this.mutator&&this.mutator.createIcon();this.updateColour();if(!Blockly.readOnly&&!this.eventsInit_){Blockly.bindEvent_(this.getSvgRoot(),"mousedown",this,this.onMouseDown_);var c=this;Blockly.bindEvent_(this.getSvgRoot(),"touchstart",null,function(a){Blockly.longStart_(a,c)})}goog.isFunction(this.onchange)&&!this.eventsInit_&&Blockly.bindEvent_(this.workspace.getCanvas(),
+"blocklyWorkspaceChange",this,this.onchange);this.eventsInit_=!0;this.getSvgRoot().parentNode||this.workspace.getCanvas().appendChild(this.getSvgRoot())};Blockly.BlockSvg.prototype.select=function(){Blockly.selected&&Blockly.selected.unselect();Blockly.selected=this;this.addSelect();Blockly.fireUiEvent(this.workspace.getCanvas(),"blocklySelectChange")};Blockly.BlockSvg.prototype.unselect=function(){Blockly.selected=null;this.removeSelect();Blockly.fireUiEvent(this.workspace.getCanvas(),"blocklySelectChange")};
+Blockly.BlockSvg.prototype.mutator=null;Blockly.BlockSvg.prototype.comment=null;Blockly.BlockSvg.prototype.warning=null;Blockly.BlockSvg.prototype.getIcons=function(){var a=[];this.mutator&&a.push(this.mutator);this.comment&&a.push(this.comment);this.warning&&a.push(this.warning);return a};Blockly.BlockSvg.onMouseUpWrapper_=null;Blockly.BlockSvg.onMouseMoveWrapper_=null;
 Blockly.BlockSvg.terminateDrag_=function(){Blockly.BlockSvg.onMouseUpWrapper_&&(Blockly.unbindEvent_(Blockly.BlockSvg.onMouseUpWrapper_),Blockly.BlockSvg.onMouseUpWrapper_=null);Blockly.BlockSvg.onMouseMoveWrapper_&&(Blockly.unbindEvent_(Blockly.BlockSvg.onMouseMoveWrapper_),Blockly.BlockSvg.onMouseMoveWrapper_=null);var a=Blockly.selected;if(2==Blockly.dragMode_&&a){var b=a.getRelativeToSurfaceXY();a.moveConnections_(b.x-a.startDragX,b.y-a.startDragY);delete a.draggedBubbles_;a.setDragging_(!1);
 a.render();Blockly.gridOptions.snap&&a.workspace==Blockly.mainWorkspace&&goog.Timer.callOnce(a.snapToGrid_,Blockly.BUMP_DELAY/2,a);goog.Timer.callOnce(a.bumpNeighbours_,Blockly.BUMP_DELAY,a);Blockly.fireUiEvent(window,"resize");a.workspace.fireChangeEvent()}Blockly.dragMode_=0;Blockly.Css.setCursor(Blockly.Css.Cursor.OPEN)};
 Blockly.BlockSvg.prototype.setParent=function(a){var b=this.getSvgRoot();if(this.parentBlock_&&b){var c=this.getRelativeToSurfaceXY();this.workspace.getCanvas().appendChild(b);b.setAttribute("transform","translate("+c.x+", "+c.y+")")}Blockly.BlockSvg.superClass_.setParent.call(this,a);a&&(c=this.getRelativeToSurfaceXY(),a.getSvgRoot().appendChild(b),a=this.getRelativeToSurfaceXY(),this.moveConnections_(a.x-c.x,a.y-c.y))};
@@ -1042,11 +1042,11 @@ Blockly.BlockSvg.prototype.showContextMenu_=function(a){if(!Blockly.readOnly&&th
 d.text=Blockly.Msg.COLLAPSE_BLOCK,d.callback=function(){b.setCollapsed(!0)}),c.push(d));Blockly.disable&&(d={text:this.disabled?Blockly.Msg.ENABLE_BLOCK:Blockly.Msg.DISABLE_BLOCK,enabled:!this.getInheritedDisabled(),callback:function(){b.setDisabled(!b.disabled)}},c.push(d));var d=this.getDescendants().length,e=this.getNextBlock();e&&(d-=e.getDescendants().length);d={text:1==d?Blockly.Msg.DELETE_BLOCK:Blockly.Msg.DELETE_X_BLOCKS.replace("%1",String(d)),enabled:!0,callback:function(){b.dispose(!0,
 !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.BlockSvg.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.BlockSvg.prototype.setDragging_=function(a){a?this.addDragging():this.removeDragging();for(var b=0;b<this.childBlocks_.length;b++)this.childBlocks_[b].setDragging_(a)};
-Blockly.BlockSvg.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.dragMode_&&Math.sqrt(Math.pow(c,2)+Math.pow(d,2))>Blockly.DRAG_RADIUS&&(Blockly.dragMode_=2,b.setParent(null),b.setDragging_(!0),b.workspace.recordDeleteAreas());if(2==Blockly.dragMode_){var e=b.startDragX+c,f=b.startDragY+d;b.getSvgRoot().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],q=l.closest(k,c,d);q.connection&&(g=q.connection,h=l,k=q.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.BlockSvg.prototype.updateMovable=function(){this.isMovable()?Blockly.addClass_(this.svgGroup_,"blocklyDraggable"):Blockly.removeClass_(this.svgGroup_,"blocklyDraggable")};Blockly.BlockSvg.prototype.getSvgRoot=function(){return this.svgGroup_};Blockly.BlockSvg.SEP_SPACE_X=10;Blockly.BlockSvg.SEP_SPACE_Y=10;Blockly.BlockSvg.INLINE_PADDING_Y=5;
-Blockly.BlockSvg.MIN_BLOCK_Y=25;Blockly.BlockSvg.TAB_HEIGHT=20;Blockly.BlockSvg.TAB_WIDTH=8;Blockly.BlockSvg.NOTCH_WIDTH=30;Blockly.BlockSvg.CORNER_RADIUS=8;Blockly.BlockSvg.FIELD_HEIGHT=18;Blockly.BlockSvg.DISTANCE_45_INSIDE=(1-Math.SQRT1_2)*(Blockly.BlockSvg.CORNER_RADIUS-1)+1;Blockly.BlockSvg.DISTANCE_45_OUTSIDE=(1-Math.SQRT1_2)*(Blockly.BlockSvg.CORNER_RADIUS+1)-1;Blockly.BlockSvg.NOTCH_PATH_LEFT="l 6,4 3,0 6,-4";Blockly.BlockSvg.NOTCH_PATH_LEFT_HIGHLIGHT="l 6.5,4 2,0 6.5,-4";
-Blockly.BlockSvg.NOTCH_PATH_RIGHT="l -6,4 -3,0 -6,-4";Blockly.BlockSvg.JAGGED_TEETH="l 8,0 0,4 8,4 -16,8 8,4";Blockly.BlockSvg.JAGGED_TEETH_HEIGHT=20;Blockly.BlockSvg.JAGGED_TEETH_WIDTH=15;Blockly.BlockSvg.TAB_PATH_DOWN="v 5 c 0,10 -"+Blockly.BlockSvg.TAB_WIDTH+",-8 -"+Blockly.BlockSvg.TAB_WIDTH+",7.5 s "+Blockly.BlockSvg.TAB_WIDTH+",-2.5 "+Blockly.BlockSvg.TAB_WIDTH+",7.5";
+Blockly.BlockSvg.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.dragMode_&&Math.sqrt(Math.pow(c,2)+Math.pow(d,2))>Blockly.DRAG_RADIUS&&(Blockly.dragMode_=2,Blockly.longStop_(),b.setParent(null),b.setDragging_(!0),b.workspace.recordDeleteAreas());if(2==Blockly.dragMode_){var e=b.startDragX+c,f=b.startDragY+
+d;b.getSvgRoot().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],q=l.closest(k,c,d);q.connection&&(g=q.connection,h=l,k=q.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.BlockSvg.prototype.updateMovable=function(){this.isMovable()?Blockly.addClass_(this.svgGroup_,"blocklyDraggable"):Blockly.removeClass_(this.svgGroup_,"blocklyDraggable")};Blockly.BlockSvg.prototype.getSvgRoot=function(){return this.svgGroup_};Blockly.BlockSvg.SEP_SPACE_X=10;
+Blockly.BlockSvg.SEP_SPACE_Y=10;Blockly.BlockSvg.INLINE_PADDING_Y=5;Blockly.BlockSvg.MIN_BLOCK_Y=25;Blockly.BlockSvg.TAB_HEIGHT=20;Blockly.BlockSvg.TAB_WIDTH=8;Blockly.BlockSvg.NOTCH_WIDTH=30;Blockly.BlockSvg.CORNER_RADIUS=8;Blockly.BlockSvg.FIELD_HEIGHT=18;Blockly.BlockSvg.DISTANCE_45_INSIDE=(1-Math.SQRT1_2)*(Blockly.BlockSvg.CORNER_RADIUS-1)+1;Blockly.BlockSvg.DISTANCE_45_OUTSIDE=(1-Math.SQRT1_2)*(Blockly.BlockSvg.CORNER_RADIUS+1)-1;Blockly.BlockSvg.NOTCH_PATH_LEFT="l 6,4 3,0 6,-4";
+Blockly.BlockSvg.NOTCH_PATH_LEFT_HIGHLIGHT="l 6.5,4 2,0 6.5,-4";Blockly.BlockSvg.NOTCH_PATH_RIGHT="l -6,4 -3,0 -6,-4";Blockly.BlockSvg.JAGGED_TEETH="l 8,0 0,4 8,4 -16,8 8,4";Blockly.BlockSvg.JAGGED_TEETH_HEIGHT=20;Blockly.BlockSvg.JAGGED_TEETH_WIDTH=15;Blockly.BlockSvg.TAB_PATH_DOWN="v 5 c 0,10 -"+Blockly.BlockSvg.TAB_WIDTH+",-8 -"+Blockly.BlockSvg.TAB_WIDTH+",7.5 s "+Blockly.BlockSvg.TAB_WIDTH+",-2.5 "+Blockly.BlockSvg.TAB_WIDTH+",7.5";
 Blockly.BlockSvg.TAB_PATH_DOWN_HIGHLIGHT_RTL="v 6.5 m -"+.98*Blockly.BlockSvg.TAB_WIDTH+",2.5 q -"+.05*Blockly.BlockSvg.TAB_WIDTH+",10 "+.27*Blockly.BlockSvg.TAB_WIDTH+",10 m "+.71*Blockly.BlockSvg.TAB_WIDTH+",-2.5 v 1.5";Blockly.BlockSvg.TOP_LEFT_CORNER_START="m 0,"+Blockly.BlockSvg.CORNER_RADIUS;Blockly.BlockSvg.TOP_LEFT_CORNER_START_HIGHLIGHT_RTL="m "+Blockly.BlockSvg.DISTANCE_45_INSIDE+","+Blockly.BlockSvg.DISTANCE_45_INSIDE;
 Blockly.BlockSvg.TOP_LEFT_CORNER_START_HIGHLIGHT_LTR="m 1,"+(Blockly.BlockSvg.CORNER_RADIUS-1);Blockly.BlockSvg.TOP_LEFT_CORNER="A "+Blockly.BlockSvg.CORNER_RADIUS+","+Blockly.BlockSvg.CORNER_RADIUS+" 0 0,1 "+Blockly.BlockSvg.CORNER_RADIUS+",0";Blockly.BlockSvg.TOP_LEFT_CORNER_HIGHLIGHT="A "+(Blockly.BlockSvg.CORNER_RADIUS-1)+","+(Blockly.BlockSvg.CORNER_RADIUS-1)+" 0 0,1 "+Blockly.BlockSvg.CORNER_RADIUS+",1";
 Blockly.BlockSvg.INNER_TOP_LEFT_CORNER=Blockly.BlockSvg.NOTCH_PATH_RIGHT+" h -"+(Blockly.BlockSvg.NOTCH_WIDTH-15-Blockly.BlockSvg.CORNER_RADIUS)+" a "+Blockly.BlockSvg.CORNER_RADIUS+","+Blockly.BlockSvg.CORNER_RADIUS+" 0 0,0 -"+Blockly.BlockSvg.CORNER_RADIUS+","+Blockly.BlockSvg.CORNER_RADIUS;Blockly.BlockSvg.INNER_BOTTOM_LEFT_CORNER="a "+Blockly.BlockSvg.CORNER_RADIUS+","+Blockly.BlockSvg.CORNER_RADIUS+" 0 0,0 "+Blockly.BlockSvg.CORNER_RADIUS+","+Blockly.BlockSvg.CORNER_RADIUS;
@@ -1240,7 +1240,7 @@ Blockly.Toolbox.prototype.populate_=function(){function a(c,d){for(var e=0,f;f=c
 b.blocks=[];a(Blockly.languageTree,this.tree_);if(b.blocks.length)throw"Toolbox cannot have both blocks and categories in the root level.";Blockly.fireUiEvent(window,"resize")};Blockly.Toolbox.prototype.clearSelection=function(){this.tree_.setSelectedItem(null)};Blockly.Toolbox.prototype.getRect=function(){var a=Blockly.RTL?Blockly.svgSize().width-this.width:-1E7;return new goog.math.Rect(a,-1E7,1E7+this.width,2E7)};
 Blockly.Toolbox.TreeControl=function(a,b){this.toolbox_=a;goog.ui.tree.TreeControl.call(this,goog.html.SafeHtml.EMPTY,b)};goog.inherits(Blockly.Toolbox.TreeControl,goog.ui.tree.TreeControl);Blockly.Toolbox.TreeControl.prototype.enterDocument=function(){Blockly.Toolbox.TreeControl.superClass_.enterDocument.call(this);if(goog.events.BrowserFeature.TOUCH_ENABLED){var a=this.getElement();Blockly.bindEvent_(a,goog.events.EventType.TOUCHSTART,this,this.handleTouchEvent_)}};
 Blockly.Toolbox.TreeControl.prototype.handleTouchEvent_=function(a){a.preventDefault();var b=this.getNodeFromEvent_(a);b&&a.type===goog.events.EventType.TOUCHSTART&&setTimeout(function(){b.onMouseDown(a)},1)};Blockly.Toolbox.TreeControl.prototype.createNode=function(a){return new Blockly.Toolbox.TreeNode(this.toolbox_,a?goog.html.SafeHtml.htmlEscape(a):goog.html.SafeHtml.EMPTY,this.getConfig(),this.getDomHelper())};
-Blockly.Toolbox.TreeControl.prototype.setSelectedItem=function(a){if(this.selectedItem_!=a){goog.ui.tree.TreeControl.prototype.setSelectedItem.call(this,a);var b=this.toolbox_;a&&a.blocks&&a.blocks.length?(b.flyout_.show(a.blocks),b.lastCategory_!=a.blocks&&(b.flyout_.scrollToTop(),b.lastCategory_=a.blocks)):b.flyout_.hide()}};
+Blockly.Toolbox.TreeControl.prototype.setSelectedItem=function(a){Blockly.removeAllRanges();if(this.selectedItem_!=a){goog.ui.tree.TreeControl.prototype.setSelectedItem.call(this,a);var b=this.toolbox_;a&&a.blocks&&a.blocks.length?(b.flyout_.show(a.blocks),b.lastCategory_!=a.blocks&&(b.flyout_.scrollToTop(),b.lastCategory_=a.blocks)):b.flyout_.hide()}};
 Blockly.Toolbox.TreeNode=function(a,b,c,d){goog.ui.tree.TreeNode.call(this,b,c,d);a&&(b=function(){Blockly.fireUiEvent(window,"resize")},goog.events.listen(a.tree_,goog.ui.tree.BaseNode.EventType.EXPAND,b),goog.events.listen(a.tree_,goog.ui.tree.BaseNode.EventType.COLLAPSE,b))};goog.inherits(Blockly.Toolbox.TreeNode,goog.ui.tree.TreeNode);goog.ui.tree.BaseNode.prototype.getExpandIconSafeHtml=function(){return goog.html.SafeHtml.create("span")};
 Blockly.Toolbox.TreeNode.prototype.onMouseDown=function(a){this.hasChildren()&&this.isUserCollapsible_?(this.toggle(),this.select()):this.isSelected()?this.getTree().setSelectedItem(null):this.select();this.updateRow()};Blockly.Toolbox.TreeNode.prototype.onDoubleClick_=function(a){};Blockly.Toolbox.TreeSeparator=function(){Blockly.Toolbox.TreeNode.call(this,null,"",Blockly.Toolbox.TreeSeparator.CONFIG_)};goog.inherits(Blockly.Toolbox.TreeSeparator,Blockly.Toolbox.TreeNode);
 Blockly.Toolbox.TreeSeparator.CONFIG_={cssTreeRow:"blocklyTreeSeparator"};
@@ -1289,12 +1289,12 @@ d);d=Blockly.createSvgElement("pattern",{id:"blocklyDisabledPattern",patternUnit
 Blockly.mainWorkspace.maxBlocks=Blockly.maxBlocks;Blockly.readOnly||(Blockly.hasCategories?Blockly.mainWorkspace.toolbox_=new Blockly.Toolbox(b,a):Blockly.languageTree&&Blockly.mainWorkspace.addFlyout(),Blockly.hasScrollbars||Blockly.addChangeListener(function(){if(0==Blockly.dragMode_){var a=Blockly.mainWorkspace.getMetrics(),b=a.viewLeft+a.absoluteLeft,c=a.viewTop+a.absoluteTop;if(a.contentTop<c||a.contentTop+a.contentHeight>a.viewHeight+c||a.contentLeft<(Blockly.RTL?a.viewLeft:b)||a.contentLeft+
 a.contentWidth>(Blockly.RTL?a.viewWidth:a.viewWidth+b))for(var d=Blockly.mainWorkspace.getTopBlocks(!1),e=0,f;f=d[e];e++){var p=f.getRelativeToSurfaceXY(),n=f.getHeightWidth(),r=c+25-n.height-p.y;0<r&&f.moveBy(0,r);r=c+a.viewHeight-25-p.y;0>r&&f.moveBy(0,r);r=25+b-p.x-(Blockly.RTL?0:n.width);0<r&&f.moveBy(r,0);r=b+a.viewWidth-25-p.x+(Blockly.RTL?n.width:0);0>r&&f.moveBy(r,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.mainWorkspace.toolbox_)Blockly.mainWorkspace.toolbox_.init(Blockly.mainWorkspace);else if(Blockly.mainWorkspace.flyout_){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+"delete.wav"],"delete");var b=[],a=function(){for(;b.length;)Blockly.unbindEvent_(b.pop());Blockly.preloadAudio_()};b.push(Blockly.bindEvent_(document,"mousemove",null,a));b.push(Blockly.bindEvent_(document,"touchstart",null,a))}};
-Blockly.updateToolbox=function(a){if(a=Blockly.parseToolboxTree_(a)){if(!Blockly.languageTree)throw"Existing toolbox is null.  Can't create new toolbox.";if(a.getElementsByTagName("category").length){if(!Blockly.hasCategories)throw"Existing toolbox has no categories.  Can't change mode.";Blockly.languageTree=a;Blockly.mainWorkspace.toolbox_.populate_()}else{if(Blockly.hasCategories)throw"Existing toolbox has categories.  Can't change mode.";Blockly.languageTree=a;Blockly.mainWorkspace.flyout_.show(Blockly.languageTree.childNodes)}}else if(Blockly.languageTree)throw"Can't nullify an existing toolbox.";
-};
+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.bindEvent_(Blockly.svg,"touchstart",null,function(a){Blockly.longStart_(a,null)});Blockly.documentEventsBound_||(Blockly.bindEvent_(window,"resize",document,Blockly.svgResize),Blockly.bindEvent_(document,"keydown",null,Blockly.onKeyDown_),Blockly.bindEvent_(document,
+"touchend",null,Blockly.longStop_),Blockly.bindEvent_(document,"touchcancel",null,Blockly.longStop_),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.mainWorkspace.toolbox_)Blockly.mainWorkspace.toolbox_.init(Blockly.mainWorkspace);else if(Blockly.mainWorkspace.flyout_){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+"delete.wav"],"delete");var b=[],a=function(){for(;b.length;)Blockly.unbindEvent_(b.pop());Blockly.preloadAudio_()};b.push(Blockly.bindEvent_(document,"mousemove",null,a));b.push(Blockly.bindEvent_(document,"touchstart",
+null,a))}};
+Blockly.updateToolbox=function(a){if(a=Blockly.parseToolboxTree_(a)){if(!Blockly.languageTree)throw"Existing toolbox is null.  Can't create new toolbox.";if(a.getElementsByTagName("category").length){if(!Blockly.hasCategories)throw"Existing toolbox has no categories.  Can't change mode.";Blockly.languageTree=a;Blockly.mainWorkspace.toolbox_.populate_()}else{if(Blockly.hasCategories)throw"Existing toolbox has categories.  Can't change mode.";Blockly.languageTree=a;Blockly.mainWorkspace.flyout_.show(Blockly.languageTree.childNodes)}}else if(Blockly.languageTree)throw"Can't nullify an existing toolbox.";};
 // 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.hasClass_=function(a,b){return-1!=(" "+a.getAttribute("class")+" ").indexOf(" "+b+" ")};Blockly.bindEvent_=function(a,b,c,d){var e=function(a){d.call(c,a)};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.call(c,a);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};
@@ -1309,18 +1309,19 @@ Blockly.commonWordSuffix=function(a,b){if(!a.length)return 0;if(1==a.length)retu
 // Copyright 2011 Google Inc.  Apache License 2.0
 Blockly.pathToMedia="https://blockly-demo.appspot.com/static/media/";Blockly.SVG_NS="http://www.w3.org/2000/svg";Blockly.HTML_NS="http://www.w3.org/1999/xhtml";Blockly.HSV_SATURATION=.45;Blockly.HSV_VALUE=.65;Blockly.SPRITE={width:64,height:92,url:"sprites.png"};Blockly.makeColour=function(a){return goog.color.hsvToHex(a,Blockly.HSV_SATURATION,255*Blockly.HSV_VALUE)};Blockly.INPUT_VALUE=1;Blockly.OUTPUT_VALUE=2;Blockly.NEXT_STATEMENT=3;Blockly.PREVIOUS_STATEMENT=4;Blockly.DUMMY_INPUT=5;
 Blockly.ALIGN_LEFT=-1;Blockly.ALIGN_CENTRE=0;Blockly.ALIGN_RIGHT=1;Blockly.OPPOSITE_TYPE=[];Blockly.OPPOSITE_TYPE[Blockly.INPUT_VALUE]=Blockly.OUTPUT_VALUE;Blockly.OPPOSITE_TYPE[Blockly.OUTPUT_VALUE]=Blockly.INPUT_VALUE;Blockly.OPPOSITE_TYPE[Blockly.NEXT_STATEMENT]=Blockly.PREVIOUS_STATEMENT;Blockly.OPPOSITE_TYPE[Blockly.PREVIOUS_STATEMENT]=Blockly.NEXT_STATEMENT;Blockly.SOUNDS_=Object.create(null);Blockly.selected=null;Blockly.readOnly=!1;Blockly.highlightedConnection_=null;
-Blockly.localConnection_=null;Blockly.DRAG_RADIUS=5;Blockly.SNAP_RADIUS=20;Blockly.BUMP_DELAY=250;Blockly.COLLAPSE_CHARS=30;Blockly.mainWorkspace=null;Blockly.clipboard_=null;Blockly.dragMode_=0;Blockly.onTouchUpWrapper_=null;Blockly.svgSize=function(){return{width:Blockly.svg.cachedWidth_,height:Blockly.svg.cachedHeight_}};
+Blockly.localConnection_=null;Blockly.DRAG_RADIUS=5;Blockly.SNAP_RADIUS=20;Blockly.BUMP_DELAY=250;Blockly.COLLAPSE_CHARS=30;Blockly.LONGPRESS=750;Blockly.mainWorkspace=null;Blockly.clipboard_=null;Blockly.dragMode_=0;Blockly.onTouchUpWrapper_=null;Blockly.svgSize=function(){return{width:Blockly.svg.cachedWidth_,height:Blockly.svg.cachedHeight_}};
 Blockly.svgResize=function(){var a=Blockly.svg,b=a.parentNode,c=b.offsetWidth,b=b.offsetHeight;a.cachedWidth_!=c&&(a.setAttribute("width",c+"px"),a.cachedWidth_=c);a.cachedHeight_!=b&&(a.setAttribute("height",b+"px"),a.cachedHeight_=b);Blockly.mainWorkspace.scrollbar&&Blockly.mainWorkspace.scrollbar.resize()};
-Blockly.onMouseDown_=function(a){Blockly.svgResize();Blockly.terminateDrag_();Blockly.hideChaff();var b=a.target&&a.target.nodeName&&("svg"==a.target.nodeName.toLowerCase()||a.target==Blockly.mainWorkspace.svgBackground_);!Blockly.readOnly&&Blockly.selected&&b&&Blockly.selected.unselect();a.target!=Blockly.svg&&a.target!=Blockly.mainWorkspace.svgBackground_||!Blockly.isRightButton(a)?(Blockly.readOnly||b)&&Blockly.mainWorkspace.scrollbar&&(Blockly.mainWorkspace.dragMode=!0,Blockly.mainWorkspace.startDragMouseX=
-a.clientX,Blockly.mainWorkspace.startDragMouseY=a.clientY,Blockly.mainWorkspace.startDragMetrics=Blockly.mainWorkspace.getMetrics(),Blockly.mainWorkspace.startScrollX=Blockly.mainWorkspace.scrollX,Blockly.mainWorkspace.startScrollY=Blockly.mainWorkspace.scrollY,"mouseup"in Blockly.bindEvent_.TOUCH_MAP&&(Blockly.onTouchUpWrapper_=Blockly.bindEvent_(document,"mouseup",null,Blockly.onMouseUp_)),Blockly.onMouseMoveWrapper_=Blockly.bindEvent_(document,"mousemove",null,Blockly.onMouseMove_)):Blockly.showContextMenu_(a)};
-Blockly.onMouseUp_=function(a){Blockly.Css.setCursor(Blockly.Css.Cursor.OPEN);Blockly.mainWorkspace.dragMode=!1;Blockly.onTouchUpWrapper_&&(Blockly.unbindEvent_(Blockly.onTouchUpWrapper_),Blockly.onTouchUpWrapper_=null);Blockly.onMouseMoveWrapper_&&(Blockly.unbindEvent_(Blockly.onMouseMoveWrapper_),Blockly.onMouseMoveWrapper_=null)};
-Blockly.onMouseMove_=function(a){if(Blockly.mainWorkspace.dragMode){Blockly.removeAllRanges();var b=Blockly.mainWorkspace.startDragMetrics,c=Blockly.mainWorkspace.startScrollX+(a.clientX-Blockly.mainWorkspace.startDragMouseX),d=Blockly.mainWorkspace.startScrollY+(a.clientY-Blockly.mainWorkspace.startDragMouseY),c=Math.min(c,-b.contentLeft),d=Math.min(d,-b.contentTop),c=Math.max(c,b.viewWidth-b.contentLeft-b.contentWidth),d=Math.max(d,b.viewHeight-b.contentTop-b.contentHeight);Blockly.mainWorkspace.scrollbar.set(-c-
-b.contentLeft,-d-b.contentTop);a.stopPropagation()}};
+Blockly.onMouseDown_=function(a){Blockly.svgResize();Blockly.terminateDrag_();Blockly.hideChaff();var b=a.target&&a.target.nodeName&&("svg"==a.target.nodeName.toLowerCase()||a.target==Blockly.mainWorkspace.svgBackground_);!Blockly.readOnly&&Blockly.selected&&b&&Blockly.selected.unselect();a.target!=Blockly.svg&&a.target!=Blockly.mainWorkspace.svgBackground_||!Blockly.isRightButton(a)?(Blockly.readOnly||b)&&Blockly.mainWorkspace.scrollbar&&(Blockly.removeAllRanges(),Blockly.mainWorkspace.dragMode=
+!0,Blockly.mainWorkspace.startDragMouseX=a.clientX,Blockly.mainWorkspace.startDragMouseY=a.clientY,Blockly.mainWorkspace.startDragMetrics=Blockly.mainWorkspace.getMetrics(),Blockly.mainWorkspace.startScrollX=Blockly.mainWorkspace.scrollX,Blockly.mainWorkspace.startScrollY=Blockly.mainWorkspace.scrollY,"mouseup"in Blockly.bindEvent_.TOUCH_MAP&&(Blockly.onTouchUpWrapper_=Blockly.bindEvent_(document,"mouseup",null,Blockly.onMouseUp_)),Blockly.onMouseMoveWrapper_=Blockly.bindEvent_(document,"mousemove",
+null,Blockly.onMouseMove_)):Blockly.showContextMenu_(a)};Blockly.onMouseUp_=function(a){Blockly.Css.setCursor(Blockly.Css.Cursor.OPEN);Blockly.mainWorkspace.dragMode=!1;Blockly.onTouchUpWrapper_&&(Blockly.unbindEvent_(Blockly.onTouchUpWrapper_),Blockly.onTouchUpWrapper_=null);Blockly.onMouseMoveWrapper_&&(Blockly.unbindEvent_(Blockly.onMouseMoveWrapper_),Blockly.onMouseMoveWrapper_=null)};
+Blockly.onMouseMove_=function(a){if(Blockly.mainWorkspace.dragMode){Blockly.removeAllRanges();var b=a.clientX-Blockly.mainWorkspace.startDragMouseX,c=a.clientY-Blockly.mainWorkspace.startDragMouseY,d=Blockly.mainWorkspace.startDragMetrics,e=Blockly.mainWorkspace.startScrollX+b,f=Blockly.mainWorkspace.startScrollY+c,e=Math.min(e,-d.contentLeft),f=Math.min(f,-d.contentTop),e=Math.max(e,d.viewWidth-d.contentLeft-d.contentWidth),f=Math.max(f,d.viewHeight-d.contentTop-d.contentHeight);Blockly.mainWorkspace.scrollbar.set(-e-
+d.contentLeft,-f-d.contentTop);Math.sqrt(Math.pow(b,2)+Math.pow(c,2))>Blockly.DRAG_RADIUS&&Blockly.longStop_();a.stopPropagation()}};
 Blockly.onKeyDown_=function(a){if(!Blockly.isTargetInput_(a))if(27==a.keyCode)Blockly.hideChaff();else if(8==a.keyCode||46==a.keyCode)try{Blockly.selected&&Blockly.selected.isDeletable()&&(Blockly.hideChaff(),Blockly.selected.dispose(!0,!0))}finally{a.preventDefault()}else if(a.altKey||a.ctrlKey||a.metaKey)Blockly.selected&&Blockly.selected.isDeletable()&&Blockly.selected.isMovable()&&Blockly.selected.workspace==Blockly.mainWorkspace&&(Blockly.hideChaff(),67==a.keyCode?Blockly.copy_(Blockly.selected):
-88==a.keyCode&&(Blockly.copy_(Blockly.selected),Blockly.selected.dispose(!0,!0))),86==a.keyCode&&Blockly.clipboard_&&Blockly.mainWorkspace.paste(Blockly.clipboard_)};Blockly.terminateDrag_=function(){Blockly.BlockSvg.terminateDrag_();Blockly.Flyout.terminateDrag_()};Blockly.copy_=function(a){var b=Blockly.Xml.blockToDom_(a);Blockly.Xml.deleteNext(b);a=a.getRelativeToSurfaceXY();b.setAttribute("x",Blockly.RTL?-a.x:a.x);b.setAttribute("y",a.y);Blockly.clipboard_=b};
+88==a.keyCode&&(Blockly.copy_(Blockly.selected),Blockly.selected.dispose(!0,!0))),86==a.keyCode&&Blockly.clipboard_&&Blockly.mainWorkspace.paste(Blockly.clipboard_)};Blockly.terminateDrag_=function(){Blockly.BlockSvg.terminateDrag_();Blockly.Flyout.terminateDrag_()};Blockly.longPid_=0;Blockly.longStart_=function(a,b){Blockly.longStop_();Blockly.longPid_=setTimeout(function(){a.button=2;if(b)b.onMouseDown_(a);else Blockly.onMouseDown_(a)},Blockly.LONGPRESS)};
+Blockly.longStop_=function(){Blockly.longPid_&&(clearTimeout(Blockly.longPid_),Blockly.longPid_=0)};Blockly.copy_=function(a){var b=Blockly.Xml.blockToDom_(a);Blockly.Xml.deleteNext(b);a=a.getRelativeToSurfaceXY();b.setAttribute("x",Blockly.RTL?-a.x:a.x);b.setAttribute("y",a.y);Blockly.clipboard_=b};
 Blockly.showContextMenu_=function(a){if(!Blockly.readOnly){var b=[];if(Blockly.collapse){for(var c=!1,d=!1,e=Blockly.mainWorkspace.getTopBlocks(!1),f=0;f<e.length;f++)for(var g=e[f];g;)g.isCollapsed()?c=!0:d=!0,g=g.getNextBlock();d={enabled:d};d.text=Blockly.Msg.COLLAPSE_ALL;d.callback=function(){for(var a=0,b=0;b<e.length;b++)for(var c=e[b];c;)setTimeout(c.setCollapsed.bind(c,!0),a),c=c.getNextBlock(),a+=10};b.push(d);c={enabled:c};c.text=Blockly.Msg.EXPAND_ALL;c.callback=function(){for(var a=0,
 b=0;b<e.length;b++)for(var c=e[b];c;)setTimeout(c.setCollapsed.bind(c,!1),a),c=c.getNextBlock(),a+=10};b.push(c)}Blockly.ContextMenu.show(a,b)}};Blockly.onContextMenu_=function(a){Blockly.isTargetInput_(a)||a.preventDefault()};Blockly.hideChaff=function(a){Blockly.Tooltip.hide();Blockly.WidgetDiv.hide();!a&&Blockly.mainWorkspace.toolbox_&&Blockly.mainWorkspace.toolbox_.flyout_&&Blockly.mainWorkspace.toolbox_.flyout_.autoClose&&Blockly.mainWorkspace.toolbox_.clearSelection()};
-Blockly.removeAllRanges=function(){if(window.getSelection){var a=window.getSelection();a&&a.removeAllRanges&&(a.removeAllRanges(),setTimeout(function(){try{window.getSelection().removeAllRanges()}catch(a){}},0))}};Blockly.isTargetInput_=function(a){return"textarea"==a.target.type||"text"==a.target.type||"number"==a.target.type||"email"==a.target.type||"password"==a.target.type||"search"==a.target.type||"tel"==a.target.type||"url"==a.target.type};
+Blockly.removeAllRanges=function(){getSelection()&&setTimeout(function(){try{getSelection().removeAllRanges()}catch(a){}},0)};Blockly.isTargetInput_=function(a){return"textarea"==a.target.type||"text"==a.target.type||"number"==a.target.type||"email"==a.target.type||"password"==a.target.type||"search"==a.target.type||"tel"==a.target.type||"url"==a.target.type};
 Blockly.loadAudio_=function(a,b){if(window.Audio&&a.length){for(var c,d=new window.Audio,e=0;e<a.length;e++){var f=a[e],g=f.match(/\.(\w+)$/);if(g&&d.canPlayType("audio/"+g[1])){c=new window.Audio(f);break}}c&&c.play&&(Blockly.SOUNDS_[b]=c)}};Blockly.preloadAudio_=function(){for(var a in Blockly.SOUNDS_){var b=Blockly.SOUNDS_[a];b.volume=.01;b.play();b.pause();if(goog.userAgent.IPAD||goog.userAgent.IPHONE)break}};
 Blockly.playAudio=function(a,b){var c=Blockly.SOUNDS_[a];c&&(c=goog.userAgent.DOCUMENT_MODE&&9===goog.userAgent.DOCUMENT_MODE||goog.userAgent.IPAD||goog.userAgent.ANDROID?c:c.cloneNode(),c.volume=void 0===b?1:b,c.play())};
 Blockly.getMainWorkspaceMetrics_=function(){var a=Blockly.svgSize();Blockly.mainWorkspace.toolbox_&&(a.width-=Blockly.mainWorkspace.toolbox_.width);var b=a.width-Blockly.Scrollbar.scrollbarThickness,c=a.height-Blockly.Scrollbar.scrollbarThickness;try{var d=Blockly.mainWorkspace.getCanvas().getBBox()}catch(e){return null}if(Blockly.mainWorkspace.scrollbar)var f=Math.min(d.x-b/2,d.x+d.width-b),b=Math.max(d.x+d.width+b/2,d.x+b),g=Math.min(d.y-c/2,d.y+d.height-c),c=Math.max(d.y+d.height+c/2,d.y+c);else f=
diff --git a/core/block_svg.js b/core/block_svg.js
index fa934a1cc..3fc7daf76 100644
--- a/core/block_svg.js
+++ b/core/block_svg.js
@@ -87,6 +87,9 @@ Blockly.BlockSvg.prototype.initSvg = function() {
   if (!Blockly.readOnly && !this.eventsInit_) {
     Blockly.bindEvent_(this.getSvgRoot(), 'mousedown', this,
                        this.onMouseDown_);
+    var thisBlock = this;
+    Blockly.bindEvent_(this.getSvgRoot(), 'touchstart', null,
+                       function(e) {Blockly.longStart_(e, thisBlock);});
   }
   // Bind an onchange function, if it exists.
   if (goog.isFunction(this.onchange) && !this.eventsInit_) {
@@ -677,6 +680,7 @@ Blockly.BlockSvg.prototype.onMouseMove_ = function(e) {
       if (dr > Blockly.DRAG_RADIUS) {
         // Switch to unrestricted dragging.
         Blockly.dragMode_ = 2;
+        Blockly.longStop_();
         // Push this block to the very top of the stack.
         this_.setParent(null);
         this_.setDragging_(true);
diff --git a/core/blockly.js b/core/blockly.js
index ee2a231f4..ee44c5d08 100644
--- a/core/blockly.js
+++ b/core/blockly.js
@@ -207,6 +207,11 @@ Blockly.BUMP_DELAY = 250;
  */
 Blockly.COLLAPSE_CHARS = 30;
 
+/**
+ * Length in ms for a touch to become a long press.
+ */
+Blockly.LONGPRESS = 750;
+
 /**
  * The main workspace (defined by inject.js).
  * @type {Blockly.Workspace}
@@ -359,6 +364,11 @@ Blockly.onMouseMove_ = function(e) {
     // Move the scrollbars and the page will scroll automatically.
     Blockly.mainWorkspace.scrollbar.set(-x - metrics.contentLeft,
                                         -y - metrics.contentTop);
+    // Cancel the long-press if the drag has moved too far.
+    var dr = Math.sqrt(Math.pow(dx, 2) + Math.pow(dy, 2));
+    if (dr > Blockly.DRAG_RADIUS) {
+      Blockly.longStop_();
+    }
     e.stopPropagation();
   }
 };
@@ -422,6 +432,47 @@ Blockly.terminateDrag_ = function() {
   Blockly.Flyout.terminateDrag_();
 };
 
+/**
+ * PID of queued long-press task.
+ * @private
+ */
+Blockly.longPid_ = 0;
+
+/**
+ * Context menus on touch devices are activated using a long-press.
+ * Unfortunately the contextmenu touch event is currently (2015) only suported
+ * by Chrome.  This function is fired on any touchstart event, queues a task,
+ * which after about a second opens the context menu.  The tasks is killed
+ * if the touch event terminates early.
+ * @param {!Event} e Touch start event.
+ * @param {Blockly.Block} block The block under the touchstart event, or null
+ *   if the event was on the workspace.
+ * @private
+ */
+Blockly.longStart_ = function(e, block) {
+  Blockly.longStop_();
+  Blockly.longPid_ = setTimeout(function() {
+      e.button = 2;  // Simulate a right button click.
+      if (block) {
+        block.onMouseDown_(e);
+      } else {
+        Blockly.onMouseDown_(e);
+      }
+    }, Blockly.LONGPRESS);
+};
+
+/**
+ * Nope, that's not a long-press.  Either touchend or touchcancel was fired,
+ * or a drag hath begun.  Kill the queued long-press task.
+ * @private
+ */
+Blockly.longStop_ = function() {
+  if (Blockly.longPid_) {
+    clearTimeout(Blockly.longPid_);
+    Blockly.longPid_ = 0;
+  }
+};
+
 /**
  * Copy a block onto the local clipboard.
  * @param {!Blockly.Block} block Block to be copied.
diff --git a/core/inject.js b/core/inject.js
index d9862be38..c201ad0d6 100644
--- a/core/inject.js
+++ b/core/inject.js
@@ -395,7 +395,6 @@ Blockly.createDom_ = function(container) {
   document.body.appendChild(Blockly.WidgetDiv.DIV);
 };
 
-
 /**
  * Initialize Blockly with various handlers.
  * @private
@@ -412,11 +411,16 @@ Blockly.init_ = function() {
   Blockly.bindEvent_(Blockly.WidgetDiv.DIV, 'contextmenu', null,
                      Blockly.onContextMenu_);
 
+  Blockly.bindEvent_(Blockly.svg, 'touchstart', null,
+                     function(e) {Blockly.longStart_(e, null);});
+
   if (!Blockly.documentEventsBound_) {
     // Only bind the window/document events once.
     // Destroying and reinjecting Blockly should not bind again.
     Blockly.bindEvent_(window, 'resize', document, Blockly.svgResize);
     Blockly.bindEvent_(document, 'keydown', null, Blockly.onKeyDown_);
+    Blockly.bindEvent_(document, 'touchend', null, Blockly.longStop_);
+    Blockly.bindEvent_(document, 'touchcancel', null, Blockly.longStop_);
     // Don't use bindEvent_ for document's mouseup since that would create a
     // corresponding touch handler that would squeltch the ability to interact
     // with non-Blockly elements.