text: define([
  	"dojo/_base/array", // array.forEach
  	"dojo/_base/declare", // declare
  	"dojo/dom-class", // domClass.add domClass.contains
  	"dojo/dom-geometry", // domGeometry.contentBox
  	"dojo/dom-style", // domStyle.style
  	"dojo/_base/fx", // Animation
  	"dojo/_base/lang", // lang.hitch
  	"dojo/on",
  	"dojo/query", // query
  	"dojo/sniff", // has("ie"), has("webkit"), has("quirks")
  	"../registry", // registry.byId()
  	"dojo/text!./templates/ScrollingTabController.html",
  	"dojo/text!./templates/_ScrollingTabControllerButton.html",
  	"./TabController",
  	"./utils", // marginBox2contextBox, layoutChildren
  	"../_WidgetsInTemplateMixin",
  	"../Menu",
  	"../MenuItem",
  	"../form/Button",
  	"../_HasDropDown",
  	"dojo/NodeList-dom", // NodeList.style
  	"../a11yclick"	// template uses ondijitclick (not for keyboard support, but for responsive touch support)
  ], function(array, declare, domClass, domGeometry, domStyle, fx, lang, on, query, has,
  	registry, tabControllerTemplate, buttonTemplate, TabController, layoutUtils, _WidgetsInTemplateMixin,
  	Menu, MenuItem, Button, _HasDropDown){
  
  	// module:
  	//		dijit/layout/ScrollingTabController
  
  	var ScrollingTabController = declare("dijit.layout.ScrollingTabController", [TabController, _WidgetsInTemplateMixin], {
  		// summary:
  		//		Set of tabs with left/right arrow keys and a menu to switch between tabs not
  		//		all fitting on a single row.
  		//		Works only for horizontal tabs (either above or below the content, not to the left
  		//		or right).
  		// tags:
  		//		private
  
  		baseClass: "dijitTabController dijitScrollingTabController",
  
  		templateString: tabControllerTemplate,
  
  		// useMenu: [const] Boolean
  		//		True if a menu should be used to select tabs when they are too
  		//		wide to fit the TabContainer, false otherwise.
  		useMenu: true,
  
  		// useSlider: [const] Boolean
  		//		True if a slider should be used to select tabs when they are too
  		//		wide to fit the TabContainer, false otherwise.
  		useSlider: true,
  
  		// tabStripClass: [const] String
  		//		The css class to apply to the tab strip, if it is visible.
  		tabStripClass: "",
  
  		// _minScroll: Number
  		//		The distance in pixels from the edge of the tab strip which,
  		//		if a scroll animation is less than, forces the scroll to
  		//		go all the way to the left/right.
  		_minScroll: 5,
  
  		// Override default behavior mapping class to DOMNode
  		_setClassAttr: { node: "containerNode", type: "class" },
  
  		buildRendering: function(){
  			this.inherited(arguments);
  			var n = this.domNode;
  
  			this.scrollNode = this.tablistWrapper;
  			this._initButtons();
  
  			if(!this.tabStripClass){
  				this.tabStripClass = "dijitTabContainer" +
  					this.tabPosition.charAt(0).toUpperCase() +
  					this.tabPosition.substr(1).replace(/-.*/, "") +
  					"None";
  				domClass.add(n, "tabStrip-disabled")
  			}
  
  			domClass.add(this.tablistWrapper, this.tabStripClass);
  		},
  
  		onStartup: function(){
  			this.inherited(arguments);
  
  			// TabController is hidden until it finishes drawing, to give
  			// a less visually jumpy instantiation.   When it's finished, set visibility to ""
  			// to that the tabs are hidden/shown depending on the container's visibility setting.
  			domStyle.set(this.domNode, "visibility", "");
  			this._postStartup = true;
  
  			// changes to the tab button label or iconClass will have changed the width of the
  			// buttons, so do a resize
  			this.own(on(this.containerNode, "attrmodified-label, attrmodified-iconclass", lang.hitch(this, function(evt){
  				if(this._dim){
  					this.resize(this._dim);
  				}
  			})));
  		},
  
  		onAddChild: function(page, insertIndex){
  			this.inherited(arguments);
  
  			// Increment the width of the wrapper when a tab is added
  			// This makes sure that the buttons never wrap.
  			// The value 200 is chosen as it should be bigger than most
  			// Tab button widths.
  			domStyle.set(this.containerNode, "width",
  				(domStyle.get(this.containerNode, "width") + 200) + "px");
  		},
  
  		onRemoveChild: function(page, insertIndex){
  			// null out _selectedTab because we are about to delete that dom node
  			var button = this.pane2button(page.id);
  			if(this._selectedTab === button.domNode){
  				this._selectedTab = null;
  			}
  
  			this.inherited(arguments);
  		},
  
  		_initButtons: function(){
  			// summary:
  			//		Creates the buttons used to scroll to view tabs that
  			//		may not be visible if the TabContainer is too narrow.
  
  			// Make a list of the buttons to display when the tab labels become
  			// wider than the TabContainer, and hide the other buttons.
  			// Also gets the total width of the displayed buttons.
  			this._btnWidth = 0;
  			this._buttons = query("> .tabStripButton", this.domNode).filter(function(btn){
  				if((this.useMenu && btn == this._menuBtn.domNode) ||
  					(this.useSlider && (btn == this._rightBtn.domNode || btn == this._leftBtn.domNode))){
  					this._btnWidth += domGeometry.getMarginSize(btn).w;
  					return true;
  				}else{
  					domStyle.set(btn, "display", "none");
  					return false;
  				}
  			}, this);
  		},
  
  		_getTabsWidth: function(){
  			var children = this.getChildren();
  			if(children.length){
  				var leftTab = children[this.isLeftToRight() ? 0 : children.length - 1].domNode,
  					rightTab = children[this.isLeftToRight() ? children.length - 1 : 0].domNode;
  				return rightTab.offsetLeft + rightTab.offsetWidth - leftTab.offsetLeft;
  			}else{
  				return 0;
  			}
  		},
  
  		_enableBtn: function(width){
  			// summary:
  			//		Determines if the tabs are wider than the width of the TabContainer, and
  			//		thus that we need to display left/right/menu navigation buttons.
  			var tabsWidth = this._getTabsWidth();
  			width = width || domStyle.get(this.scrollNode, "width");
  			return tabsWidth > 0 && width < tabsWidth;
  		},
  
  		resize: function(dim){
  			// summary:
  			//		Hides or displays the buttons used to scroll the tab list and launch the menu
  			//		that selects tabs.
  
  			// Save the dimensions to be used when a child is renamed.
  			this._dim = dim;
  
  			// Set my height to be my natural height (tall enough for one row of tab labels),
  			// and my content-box width based on margin-box width specified in dim parameter.
  			// But first reset scrollNode.height in case it was set by layoutChildren() call
  			// in a previous run of this method.
  			this.scrollNode.style.height = "auto";
  			var cb = this._contentBox = layoutUtils.marginBox2contentBox(this.domNode, {h: 0, w: dim.w});
  			cb.h = this.scrollNode.offsetHeight;
  			domGeometry.setContentSize(this.domNode, cb);
  
  			// Show/hide the left/right/menu navigation buttons depending on whether or not they
  			// are needed.
  			var enable = this._enableBtn(this._contentBox.w);
  			this._buttons.style("display", enable ? "" : "none");
  
  			// Position and size the navigation buttons and the tablist
  			this._leftBtn.region = "left";
  			this._rightBtn.region = "right";
  			this._menuBtn.region = this.isLeftToRight() ? "right" : "left";
  			layoutUtils.layoutChildren(this.domNode, this._contentBox,
  				[this._menuBtn, this._leftBtn, this._rightBtn, {domNode: this.scrollNode, region: "center"}]);
  
  			// set proper scroll so that selected tab is visible
  			if(this._selectedTab){
  				if(this._anim && this._anim.status() == "playing"){
  					this._anim.stop();
  				}
  				this.scrollNode.scrollLeft = this._convertToScrollLeft(this._getScrollForSelectedTab());
  			}
  
  			// Enable/disabled left right buttons depending on whether or not user can scroll to left or right
  			this._setButtonClass(this._getScroll());
  
  			this._postResize = true;
  
  			// Return my size so layoutChildren() can use it.
  			// Also avoids IE9 layout glitch on browser resize when scroll buttons present
  			return {h: this._contentBox.h, w: dim.w};
  		},
  
  		_getScroll: function(){
  			// summary:
  			//		Returns the current scroll of the tabs where 0 means
  			//		"scrolled all the way to the left" and some positive number, based on #
  			//		of pixels of possible scroll (ex: 1000) means "scrolled all the way to the right"
  			return (this.isLeftToRight() || has("ie") < 8 || (has("ie") && has("quirks")) || has("webkit")) ? this.scrollNode.scrollLeft :
  				domStyle.get(this.containerNode, "width") - domStyle.get(this.scrollNode, "width")
  					+ (has("ie") >= 8 ? -1 : 1) * this.scrollNode.scrollLeft;
  		},
  
  		_convertToScrollLeft: function(val){
  			// summary:
  			//		Given a scroll value where 0 means "scrolled all the way to the left"
  			//		and some positive number, based on # of pixels of possible scroll (ex: 1000)
  			//		means "scrolled all the way to the right", return value to set this.scrollNode.scrollLeft
  			//		to achieve that scroll.
  			//
  			//		This method is to adjust for RTL funniness in various browsers and versions.
  			if(this.isLeftToRight() || has("ie") < 8 || (has("ie") && has("quirks")) || has("webkit")){
  				return val;
  			}else{
  				var maxScroll = domStyle.get(this.containerNode, "width") - domStyle.get(this.scrollNode, "width");
  				return (has("ie") >= 8 ? -1 : 1) * (val - maxScroll);
  			}
  		},
  
  		onSelectChild: function(/*dijit/_WidgetBase*/ page){
  			// summary:
  			//		Smoothly scrolls to a tab when it is selected.
  
  			var tab = this.pane2button(page.id);
  			if(!tab){
  				return;
  			}
  
  			var node = tab.domNode;
  
  			// Save the selection
  			if(node != this._selectedTab){
  				this._selectedTab = node;
  
  				// Scroll to the selected tab, except on startup, when scrolling is handled in resize()
  				if(this._postResize){
  					var sl = this._getScroll();
  
  					if(sl > node.offsetLeft ||
  						sl + domStyle.get(this.scrollNode, "width") <
  							node.offsetLeft + domStyle.get(node, "width")){
  						this.createSmoothScroll().play();
  					}
  				}
  			}
  
  			this.inherited(arguments);
  		},
  
  		_getScrollBounds: function(){
  			// summary:
  			//		Returns the minimum and maximum scroll setting to show the leftmost and rightmost
  			//		tabs (respectively)
  			var children = this.getChildren(),
  				scrollNodeWidth = domStyle.get(this.scrollNode, "width"), // about 500px
  				containerWidth = domStyle.get(this.containerNode, "width"), // 50,000px
  				maxPossibleScroll = containerWidth - scrollNodeWidth, // scrolling until right edge of containerNode visible
  				tabsWidth = this._getTabsWidth();
  
  			if(children.length && tabsWidth > scrollNodeWidth){
  				// Scrolling should happen
  				return {
  					min: this.isLeftToRight() ? 0 : children[children.length - 1].domNode.offsetLeft,
  					max: this.isLeftToRight() ?
  						(children[children.length - 1].domNode.offsetLeft + children[children.length - 1].domNode.offsetWidth) - scrollNodeWidth :
  						maxPossibleScroll
  				};
  			}else{
  				// No scrolling needed, all tabs visible, we stay either scrolled to far left or far right (depending on dir)
  				var onlyScrollPosition = this.isLeftToRight() ? 0 : maxPossibleScroll;
  				return {
  					min: onlyScrollPosition,
  					max: onlyScrollPosition
  				};
  			}
  		},
  
  		_getScrollForSelectedTab: function(){
  			// summary:
  			//		Returns the scroll value setting so that the selected tab
  			//		will appear in the center
  			var w = this.scrollNode,
  				n = this._selectedTab,
  				scrollNodeWidth = domStyle.get(this.scrollNode, "width"),
  				scrollBounds = this._getScrollBounds();
  
  			// TODO: scroll minimal amount (to either right or left) so that
  			// selected tab is fully visible, and just return if it's already visible?
  			var pos = (n.offsetLeft + domStyle.get(n, "width") / 2) - scrollNodeWidth / 2;
  			pos = Math.min(Math.max(pos, scrollBounds.min), scrollBounds.max);
  
  			// TODO:
  			// If scrolling close to the left side or right side, scroll
  			// all the way to the left or right.  See this._minScroll.
  			// (But need to make sure that doesn't scroll the tab out of view...)
  			return pos;
  		},
  
  		createSmoothScroll: function(x){
  			// summary:
  			//		Creates a dojo._Animation object that smoothly scrolls the tab list
  			//		either to a fixed horizontal pixel value, or to the selected tab.
  			// description:
  			//		If an number argument is passed to the function, that horizontal
  			//		pixel position is scrolled to.  Otherwise the currently selected
  			//		tab is scrolled to.
  			// x: Integer?
  			//		An optional pixel value to scroll to, indicating distance from left.
  
  			// Calculate position to scroll to
  			if(arguments.length > 0){
  				// position specified by caller, just make sure it's within bounds
  				var scrollBounds = this._getScrollBounds();
  				x = Math.min(Math.max(x, scrollBounds.min), scrollBounds.max);
  			}else{
  				// scroll to center the current tab
  				x = this._getScrollForSelectedTab();
  			}
  
  			if(this._anim && this._anim.status() == "playing"){
  				this._anim.stop();
  			}
  
  			var self = this,
  				w = this.scrollNode,
  				anim = new fx.Animation({
  					beforeBegin: function(){
  						if(this.curve){
  							delete this.curve;
  						}
  						var oldS = w.scrollLeft,
  							newS = self._convertToScrollLeft(x);
  						anim.curve = new fx._Line(oldS, newS);
  					},
  					onAnimate: function(val){
  						w.scrollLeft = val;
  					}
  				});
  			this._anim = anim;
  
  			// Disable/enable left/right buttons according to new scroll position
  			this._setButtonClass(x);
  
  			return anim; // dojo/_base/fx/Animation
  		},
  
  		_getBtnNode: function(/*Event*/ e){
  			// summary:
  			//		Gets a button DOM node from a mouse click event.
  			// e:
  			//		The mouse click event.
  			var n = e.target;
  			while(n && !domClass.contains(n, "tabStripButton")){
  				n = n.parentNode;
  			}
  			return n;
  		},
  
  		doSlideRight: function(/*Event*/ e){
  			// summary:
  			//		Scrolls the menu to the right.
  			// e:
  			//		The mouse click event.
  			this.doSlide(1, this._getBtnNode(e));
  		},
  
  		doSlideLeft: function(/*Event*/ e){
  			// summary:
  			//		Scrolls the menu to the left.
  			// e:
  			//		The mouse click event.
  			this.doSlide(-1, this._getBtnNode(e));
  		},
  
  		doSlide: function(/*Number*/ direction, /*DomNode*/ node){
  			// summary:
  			//		Scrolls the tab list to the left or right by 75% of the widget width.
  			// direction:
  			//		If the direction is 1, the widget scrolls to the right, if it is -1,
  			//		it scrolls to the left.
  
  			if(node && domClass.contains(node, "dijitTabDisabled")){
  				return;
  			}
  
  			var sWidth = domStyle.get(this.scrollNode, "width");
  			var d = (sWidth * 0.75) * direction;
  
  			var to = this._getScroll() + d;
  
  			this._setButtonClass(to);
  
  			this.createSmoothScroll(to).play();
  		},
  
  		_setButtonClass: function(/*Number*/ scroll){
  			// summary:
  			//		Disables the left scroll button if the tabs are scrolled all the way to the left,
  			//		or the right scroll button in the opposite case.
  			// scroll: Integer
  			//		amount of horizontal scroll
  
  			var scrollBounds = this._getScrollBounds();
  			this._leftBtn.set("disabled", scroll <= scrollBounds.min);
  			this._rightBtn.set("disabled", scroll >= scrollBounds.max);
  		}
  	});
  
  
  	var ScrollingTabControllerButtonMixin = declare("dijit.layout._ScrollingTabControllerButtonMixin", null, {
  		baseClass: "dijitTab tabStripButton",
  
  		templateString: buttonTemplate,
  
  		// Override inherited tabIndex: 0 from dijit/form/Button, because user shouldn't be
  		// able to tab to the left/right/menu buttons
  		tabIndex: "",
  
  		// Similarly, override FormWidget.isFocusable() because clicking a button shouldn't focus it
  		// either (this override avoids focus() call in FormWidget.js)
  		isFocusable: function(){
  			return false;
  		}
  	});
  
  	// Class used in template
  	declare("dijit.layout._ScrollingTabControllerButton", [Button, ScrollingTabControllerButtonMixin]);
  
  	// Class used in template
  	declare("dijit.layout._ScrollingTabControllerMenuButton", [Button, _HasDropDown, ScrollingTabControllerButtonMixin], {
  		// id of the TabContainer itself
  		containerId: "",
  
  		// -1 so user can't tab into the button, but so that button can still be focused programatically.
  		// Because need to move focus to the button (or somewhere) before the menu is hidden or IE6 will crash.
  		tabIndex: "-1",
  
  		isLoaded: function(){
  			// recreate menu every time, in case the TabContainer's list of children (or their icons/labels) have changed
  			return false;
  		},
  
  		loadDropDown: function(callback){
  			this.dropDown = new Menu({
  				id: this.containerId + "_menu",
  				ownerDocument: this.ownerDocument,
  				dir: this.dir,
  				lang: this.lang,
  				textDir: this.textDir
  			});
  			var container = registry.byId(this.containerId);
  			array.forEach(container.getChildren(), function(page){
  				var menuItem = new MenuItem({
  					id: page.id + "_stcMi",
  					label: page.title,
  					iconClass: page.iconClass,
  					disabled: page.disabled,
  					ownerDocument: this.ownerDocument,
  					dir: page.dir,
  					lang: page.lang,
  					textDir: page.textDir || container.textDir,
  					onClick: function(){
  						container.selectChild(page);
  					}
  				});
  				this.dropDown.addChild(menuItem);
  			}, this);
  			callback();
  		},
  
  		closeDropDown: function(/*Boolean*/ focus){
  			this.inherited(arguments);
  			if(this.dropDown){
  				this._popupStateNode.removeAttribute("aria-owns");	// remove ref to node that we are about to delete
  				this.dropDown.destroyRecursive();
  				delete this.dropDown;
  			}
  		}
  	});
  
  	return ScrollingTabController;
  });
  