1 files changed, 177 insertions, 0 deletions
diff --git a/lib/dijit/a11y.js.uncompressed.js b/lib/dijit/a11y.js.uncompressed.js
new file mode 100644
index 000000000..91a57d2ca
--- /dev/null
+++ b/lib/dijit/a11y.js.uncompressed.js
@@ -0,0 +1,177 @@
+define("dijit/a11y", [
+	"dojo/_base/array", // array.forEach array.map
+	"dojo/_base/config", // defaultDuration
+	"dojo/_base/declare", // declare
+	"dojo/dom",			// dom.byId
+	"dojo/dom-attr", // domAttr.attr domAttr.has
+	"dojo/dom-style", // style.style
+	"dojo/sniff", // has("ie")
+	"./main"	// for exporting methods to dijit namespace
+], function(array, config, declare, dom, domAttr, domStyle, has, dijit){
+
+	// module:
+	//		dijit/a11y
+
+	var shown = (dijit._isElementShown = function(/*Element*/ elem){
+		var s = domStyle.get(elem);
+		return (s.visibility != "hidden")
+			&& (s.visibility != "collapsed")
+			&& (s.display != "none")
+			&& (domAttr.get(elem, "type") != "hidden");
+	});
+
+	dijit.hasDefaultTabStop = function(/*Element*/ elem){
+		// summary:
+		//		Tests if element is tab-navigable even without an explicit tabIndex setting
+
+		// No explicit tabIndex setting, need to investigate node type
+		switch(elem.nodeName.toLowerCase()){
+			case "a":
+				// An <a> w/out a tabindex is only navigable if it has an href
+				return domAttr.has(elem, "href");
+			case "area":
+			case "button":
+			case "input":
+			case "object":
+			case "select":
+			case "textarea":
+				// These are navigable by default
+				return true;
+			case "iframe":
+				// If it's an editor <iframe> then it's tab navigable.
+				var body;
+				try{
+					// non-IE
+					var contentDocument = elem.contentDocument;
+					if("designMode" in contentDocument && contentDocument.designMode == "on"){
+						return true;
+					}
+					body = contentDocument.body;
+				}catch(e1){
+					// contentWindow.document isn't accessible within IE7/8
+					// if the iframe.src points to a foreign url and this
+					// page contains an element, that could get focus
+					try{
+						body = elem.contentWindow.document.body;
+					}catch(e2){
+						return false;
+					}
+				}
+				return body && (body.contentEditable == 'true' ||
+					(body.firstChild && body.firstChild.contentEditable == 'true'));
+			default:
+				return elem.contentEditable == 'true';
+		}
+	};
+
+	var isTabNavigable = (dijit.isTabNavigable = function(/*Element*/ elem){
+		// summary:
+		//		Tests if an element is tab-navigable
+
+		// TODO: convert (and rename method) to return effective tabIndex; will save time in _getTabNavigable()
+		if(domAttr.get(elem, "disabled")){
+			return false;
+		}else if(domAttr.has(elem, "tabIndex")){
+			// Explicit tab index setting
+			return domAttr.get(elem, "tabIndex") >= 0; // boolean
+		}else{
+			// No explicit tabIndex setting, so depends on node type
+			return dijit.hasDefaultTabStop(elem);
+		}
+	});
+
+	dijit._getTabNavigable = function(/*DOMNode*/ root){
+		// summary:
+		//		Finds descendants of the specified root node.
+		// description:
+		//		Finds the following descendants of the specified root node:
+		//
+		//		- the first tab-navigable element in document order
+		//		  without a tabIndex or with tabIndex="0"
+		//		- the last tab-navigable element in document order
+		//		  without a tabIndex or with tabIndex="0"
+		//		- the first element in document order with the lowest
+		//		  positive tabIndex value
+		//		- the last element in document order with the highest
+		//		  positive tabIndex value
+		var first, last, lowest, lowestTabindex, highest, highestTabindex, radioSelected = {};
+
+		function radioName(node){
+			// If this element is part of a radio button group, return the name for that group.
+			return node && node.tagName.toLowerCase() == "input" &&
+				node.type && node.type.toLowerCase() == "radio" &&
+				node.name && node.name.toLowerCase();
+		}
+
+		var walkTree = function(/*DOMNode*/ parent){
+			for(var child = parent.firstChild; child; child = child.nextSibling){
+				// Skip text elements, hidden elements, and also non-HTML elements (those in custom namespaces) in IE,
+				// since show() invokes getAttribute("type"), which crash on VML nodes in IE.
+				if(child.nodeType != 1 || (has("ie") <= 9 && child.scopeName !== "HTML") || !shown(child)){
+					continue;
+				}
+
+				if(isTabNavigable(child)){
+					var tabindex = +domAttr.get(child, "tabIndex");	// + to convert string --> number
+					if(!domAttr.has(child, "tabIndex") || tabindex == 0){
+						if(!first){
+							first = child;
+						}
+						last = child;
+					}else if(tabindex > 0){
+						if(!lowest || tabindex < lowestTabindex){
+							lowestTabindex = tabindex;
+							lowest = child;
+						}
+						if(!highest || tabindex >= highestTabindex){
+							highestTabindex = tabindex;
+							highest = child;
+						}
+					}
+					var rn = radioName(child);
+					if(domAttr.get(child, "checked") && rn){
+						radioSelected[rn] = child;
+					}
+				}
+				if(child.nodeName.toUpperCase() != 'SELECT'){
+					walkTree(child);
+				}
+			}
+		};
+		if(shown(root)){
+			walkTree(root);
+		}
+		function rs(node){
+			// substitute checked radio button for unchecked one, if there is a checked one with the same name.
+			return radioSelected[radioName(node)] || node;
+		}
+
+		return { first: rs(first), last: rs(last), lowest: rs(lowest), highest: rs(highest) };
+	};
+	dijit.getFirstInTabbingOrder = function(/*String|DOMNode*/ root, /*Document?*/ doc){
+		// summary:
+		//		Finds the descendant of the specified root node
+		//		that is first in the tabbing order
+		var elems = dijit._getTabNavigable(dom.byId(root, doc));
+		return elems.lowest ? elems.lowest : elems.first; // DomNode
+	};
+
+	dijit.getLastInTabbingOrder = function(/*String|DOMNode*/ root, /*Document?*/ doc){
+		// summary:
+		//		Finds the descendant of the specified root node
+		//		that is last in the tabbing order
+		var elems = dijit._getTabNavigable(dom.byId(root, doc));
+		return elems.last ? elems.last : elems.highest; // DomNode
+	};
+
+	return {
+		// summary:
+		//		Accessibility utility functions (keyboard, tab stops, etc.)
+
+		hasDefaultTabStop: dijit.hasDefaultTabStop,
+		isTabNavigable: dijit.isTabNavigable,
+		_getTabNavigable: dijit._getTabNavigable,
+		getFirstInTabbingOrder: dijit.getFirstInTabbingOrder,
+		getLastInTabbingOrder: dijit.getLastInTabbingOrder
+	};
+});