Resizable: alsoResize more than one element of a jQuery selection

Fixes #4666
Closes gh-1324
Closes gh-1461

tests/unit/resizable/resizable_options.js

@@ -432,4 +432,34 @@ test( "alsoResize + containment", function() {
 	equal( other.height(), 150, "alsoResize constrained height at containment edge" );
 });
 
+test( "alsoResize + multiple selection", function() {
+	expect( 6 );
+	var other1 = $( "<div>" )
+			.addClass( "other" )
+			.css({
+				width: 50,
+				height: 50
+			})
+			.appendTo( "body" ),
+		other2 = $( "<div>" )
+			.addClass( "other" )
+			.css({
+				width: 50,
+				height: 50
+			})
+			.appendTo( "body"),
+		element = $( "#resizable1" ).resizable({
+			alsoResize: other1.add( other2 ),
+			containment: "#container"
+		});
+
+	TestHelpers.resizable.drag( ".ui-resizable-se", 400, 400 );
+	equal( element.width(), 300, "resizable constrained width at containment edge" );
+	equal( element.height(), 200, "resizable constrained height at containment edge" );
+	equal( other1.width(), 250, "alsoResize o1 constrained width at containment edge" );
+	equal( other1.height(), 150, "alsoResize o1 constrained height at containment edge" );
+	equal( other2.width(), 250, "alsoResize o2 constrained width at containment edge" );
+	equal( other2.height(), 150, "alsoResize o2 constrained height at containment edge" );
+});
+
 })(jQuery);

ui/resizable.js

@@ -991,29 +991,15 @@ $.ui.plugin.add("resizable", "alsoResize", {
 
 	start: function() {
 		var that = $(this).resizable( "instance" ),
-			o = that.options,
-			_store = function(exp) {
-				$(exp).each(function() {
-					var el = $(this);
-					el.data("ui-resizable-alsoresize", {
-						width: parseInt(el.width(), 10), height: parseInt(el.height(), 10),
-						left: parseInt(el.css("left"), 10), top: parseInt(el.css("top"), 10)
-					});
-				});
-			};
+			o = that.options;
 
-		if (typeof(o.alsoResize) === "object" && !o.alsoResize.parentNode) {
-			if (o.alsoResize.length) {
-				o.alsoResize = o.alsoResize[0];
-				_store(o.alsoResize);
-			} else {
-				$.each(o.alsoResize, function(exp) {
-					_store(exp);
-				});
-			}
-		} else {
-			_store(o.alsoResize);
-		}
+		$(o.alsoResize).each(function() {
+			var el = $(this);
+			el.data("ui-resizable-alsoresize", {
+				width: parseInt(el.width(), 10), height: parseInt(el.height(), 10),
+				left: parseInt(el.css("left"), 10), top: parseInt(el.css("top"), 10)
+			});
+		});
 	},
 
 	resize: function(event, ui) {
@@ -1026,35 +1012,23 @@ $.ui.plugin.add("resizable", "alsoResize", {
 				width: (that.size.width - os.width) || 0,
 				top: (that.position.top - op.top) || 0,
 				left: (that.position.left - op.left) || 0
-			},
+			};
+
+			$(o.alsoResize).each(function() {
+				var el = $(this), start = $(this).data("ui-resizable-alsoresize"), style = {},
+					css = el.parents(ui.originalElement[0]).length ?
+							[ "width", "height" ] :
+							[ "width", "height", "top", "left" ];
 
-			_alsoResize = function(exp, c) {
-				$(exp).each(function() {
-					var el = $(this), start = $(this).data("ui-resizable-alsoresize"), style = {},
-						css = c && c.length ?
-							c :
-							el.parents(ui.originalElement[0]).length ?
-								[ "width", "height" ] :
-								[ "width", "height", "top", "left" ];
-
-					$.each(css, function(i, prop) {
-						var sum = (start[prop] || 0) + (delta[prop] || 0);
-						if (sum && sum >= 0) {
-							style[prop] = sum || null;
-						}
-					});
-
-					el.css(style);
+				$.each(css, function(i, prop) {
+					var sum = (start[prop] || 0) + (delta[prop] || 0);
+					if (sum && sum >= 0) {
+						style[prop] = sum || null;
+					}
 				});
-			};
 
-		if (typeof(o.alsoResize) === "object" && !o.alsoResize.nodeType) {
-			$.each(o.alsoResize, function(exp, c) {
-				_alsoResize(exp, c);
+				el.css(style);
 			});
-		} else {
-			_alsoResize(o.alsoResize);
-		}
 	},
 
 	stop: function() {