Index: tests/unit/slider/slider.html
===================================================================
--- tests/unit/slider/slider.html	(revision 3503)
+++ tests/unit/slider/slider.html	(working copy)
@@ -6,6 +6,7 @@
 	<script type="text/javascript" src="../../../jquery-1.3.2.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.core.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.widget.js"></script>
+	<script type="text/javascript" src="../../../ui/jquery.ui.mouse.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.slider.js"></script>
 
 	<link   type="text/css"       href="../testsuite.css" rel="stylesheet" />
Index: tests/unit/testsuite.js
===================================================================
--- tests/unit/testsuite.js	(revision 3503)
+++ tests/unit/testsuite.js	(working copy)
@@ -3,7 +3,7 @@
 
 function testWidgetDefaults(widget, defaults) {
 	var pluginDefaults = $.extend({},
-		$.widget.defaults,
+		$.Widget.prototype.options,
 		$.ui[widget].defaults
 	);
 	
@@ -75,7 +75,7 @@
 function testWidgetOverrides(widget) {
 	test('$.widget overrides', function() {
 		$.each(['option', '_getData', '_trigger'], function(i, method) {
-			ok($.widget.prototype[method] == $.ui[widget].prototype[method],
+			ok($.Widget.prototype[method] == $.ui[widget].prototype[method],
 				'should not override ' + method);
 		});
 	});
Index: tests/unit/resizable/resizable.html
===================================================================
--- tests/unit/resizable/resizable.html	(revision 3503)
+++ tests/unit/resizable/resizable.html	(working copy)
@@ -6,6 +6,7 @@
 	<script type="text/javascript" src="../../../jquery-1.3.2.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.core.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.widget.js"></script>
+	<script type="text/javascript" src="../../../ui/jquery.ui.mouse.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.resizable.js"></script>
 
 	<link   type="text/css"       href="../testsuite.css" rel="stylesheet" />
Index: tests/unit/draggable/draggable.html
===================================================================
--- tests/unit/draggable/draggable.html	(revision 3503)
+++ tests/unit/draggable/draggable.html	(working copy)
@@ -6,6 +6,7 @@
 	<script type="text/javascript" src="../../../jquery-1.3.2.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.core.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.widget.js"></script>
+	<script type="text/javascript" src="../../../ui/jquery.ui.mouse.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.draggable.js"></script>
 
 	<link   type="text/css"       href="../testsuite.css" rel="stylesheet" />
Index: tests/unit/dialog/dialog.html
===================================================================
--- tests/unit/dialog/dialog.html	(revision 3503)
+++ tests/unit/dialog/dialog.html	(working copy)
@@ -6,6 +6,7 @@
 	<script type="text/javascript" src="../../../jquery-1.3.2.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.core.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.widget.js"></script>
+	<script type="text/javascript" src="../../../ui/jquery.ui.mouse.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.draggable.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.position.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.resizable.js"></script>
Index: tests/unit/selectable/selectable.html
===================================================================
--- tests/unit/selectable/selectable.html	(revision 3503)
+++ tests/unit/selectable/selectable.html	(working copy)
@@ -6,6 +6,7 @@
 	<script type="text/javascript" src="../../../jquery-1.3.2.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.core.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.widget.js"></script>
+	<script type="text/javascript" src="../../../ui/jquery.ui.mouse.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.selectable.js"></script>
 
 	<link   type="text/css"       href="../testsuite.css" rel="stylesheet" />
Index: tests/unit/sortable/sortable.html
===================================================================
--- tests/unit/sortable/sortable.html	(revision 3503)
+++ tests/unit/sortable/sortable.html	(working copy)
@@ -6,6 +6,7 @@
 	<script type="text/javascript" src="../../../jquery-1.3.2.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.core.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.widget.js"></script>
+	<script type="text/javascript" src="../../../ui/jquery.ui.mouse.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.sortable.js"></script>
 
 	<link   type="text/css"       href="../testsuite.css" rel="stylesheet" />
Index: ui/jquery.ui.mouse.js
===================================================================
--- ui/jquery.ui.mouse.js	(revision 0)
+++ ui/jquery.ui.mouse.js	(revision 0)
@@ -0,0 +1,158 @@
+/*!
+ * jQuery UI @VERSION
+ *
+ * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT (MIT-LICENSE.txt)
+ * and GPL (GPL-LICENSE.txt) licenses.
+ *
+ * http://docs.jquery.com/UI
+ */
+
+/** Mouse Interaction Plugin **/
+
+$.widget("ui.mouse", {
+	_mouseInit: function() {
+		var self = this;
+
+		this.element
+			.bind('mousedown.'+this.widgetName, function(event) {
+				return self._mouseDown(event);
+			})
+			.bind('click.'+this.widgetName, function(event) {
+				if(self._preventClickEvent) {
+					self._preventClickEvent = false;
+					event.stopImmediatePropagation();
+					return false;
+				}
+			});
+
+		// Prevent text selection in IE
+		if ($.browser.msie) {
+			this._mouseUnselectable = this.element.attr('unselectable');
+			this.element.attr('unselectable', 'on');
+		}
+
+		this.started = false;
+	},
+
+	// TODO: make sure destroying one instance of mouse doesn't mess with
+	// other instances of mouse
+	_mouseDestroy: function() {
+		this.element.unbind('.'+this.widgetName);
+
+		// Restore text selection in IE
+		($.browser.msie
+			&& this.element.attr('unselectable', this._mouseUnselectable));
+	},
+
+	_mouseDown: function(event) {
+		// don't let more than one widget handle mouseStart
+		// TODO: figure out why we have to use originalEvent
+		event.originalEvent = event.originalEvent || {};
+		if (event.originalEvent.mouseHandled) { return; }
+
+		// we may have missed mouseup (out of window)
+		(this._mouseStarted && this._mouseUp(event));
+
+		this._mouseDownEvent = event;
+
+		var self = this,
+			btnIsLeft = (event.which == 1),
+			elIsCancel = (typeof this.options.cancel == "string" ? $(event.target).parents().add(event.target).filter(this.options.cancel).length : false);
+		if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
+			return true;
+		}
+
+		this.mouseDelayMet = !this.options.delay;
+		if (!this.mouseDelayMet) {
+			this._mouseDelayTimer = setTimeout(function() {
+				self.mouseDelayMet = true;
+			}, this.options.delay);
+		}
+
+		if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
+			this._mouseStarted = (this._mouseStart(event) !== false);
+			if (!this._mouseStarted) {
+				event.preventDefault();
+				return true;
+			}
+		}
+
+		// these delegates are required to keep context
+		this._mouseMoveDelegate = function(event) {
+			return self._mouseMove(event);
+		};
+		this._mouseUpDelegate = function(event) {
+			return self._mouseUp(event);
+		};
+		$(document)
+			.bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
+			.bind('mouseup.'+this.widgetName, this._mouseUpDelegate);
+
+		// preventDefault() is used to prevent the selection of text here -
+		// however, in Safari, this causes select boxes not to be selectable
+		// anymore, so this fix is needed
+		($.browser.safari || event.preventDefault());
+
+		event.originalEvent.mouseHandled = true;
+		return true;
+	},
+
+	_mouseMove: function(event) {
+		// IE mouseup check - mouseup happened when mouse was out of window
+		if ($.browser.msie && !event.button) {
+			return this._mouseUp(event);
+		}
+
+		if (this._mouseStarted) {
+			this._mouseDrag(event);
+			return event.preventDefault();
+		}
+
+		if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
+			this._mouseStarted =
+				(this._mouseStart(this._mouseDownEvent, event) !== false);
+			(this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
+		}
+
+		return !this._mouseStarted;
+	},
+
+	_mouseUp: function(event) {
+		$(document)
+			.unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
+			.unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);
+
+		if (this._mouseStarted) {
+			this._mouseStarted = false;
+			this._preventClickEvent = (event.target == this._mouseDownEvent.target);
+			this._mouseStop(event);
+		}
+
+		return false;
+	},
+
+	_mouseDistanceMet: function(event) {
+		return (Math.max(
+				Math.abs(this._mouseDownEvent.pageX - event.pageX),
+				Math.abs(this._mouseDownEvent.pageY - event.pageY)
+			) >= this.options.distance
+		);
+	},
+
+	_mouseDelayMet: function(event) {
+		return this.mouseDelayMet;
+	},
+
+	// These are placeholder methods, to be overriden by extending plugin
+	_mouseStart: function(event) {},
+	_mouseDrag: function(event) {},
+	_mouseStop: function(event) {},
+	_mouseCapture: function(event) { return true; }
+});
+
+$.ui.mouse.defaults = {
+	cancel: ':input,option',
+	distance: 1,
+	delay: 0
+};
\ No newline at end of file
Index: ui/jquery.ui.draggable.js
===================================================================
--- ui/jquery.ui.draggable.js	(revision 3503)
+++ ui/jquery.ui.draggable.js	(working copy)
@@ -13,7 +13,7 @@
  */
 (function($) {
 
-$.widget("ui.draggable", $.extend({}, $.ui.mouse, {
+$.widget("ui.draggable", $.ui.mouse, {
 
 	_init: function() {
 
@@ -418,7 +418,7 @@
 		};
 	}
 
-}));
+});
 
 $.extend($.ui.draggable, {
 	version: "@VERSION",
Index: ui/jquery.ui.resizable.js
===================================================================
--- ui/jquery.ui.resizable.js	(revision 3503)
+++ ui/jquery.ui.resizable.js	(working copy)
@@ -13,7 +13,7 @@
  */
 (function($) {
 
-$.widget("ui.resizable", $.extend({}, $.ui.mouse, {
+$.widget("ui.resizable", $.ui.mouse, {
 
 	_init: function() {
 
@@ -497,7 +497,7 @@
 		};
 	}
 
-}));
+});
 
 $.extend($.ui.resizable, {
 	version: "@VERSION",
Index: ui/jquery.ui.selectable.js
===================================================================
--- ui/jquery.ui.selectable.js	(revision 3503)
+++ ui/jquery.ui.selectable.js	(working copy)
@@ -13,7 +13,7 @@
  */
 (function($) {
 
-$.widget("ui.selectable", $.extend({}, $.ui.mouse, {
+$.widget("ui.selectable", $.ui.mouse, {
 
 	_init: function() {
 		var self = this;
@@ -242,7 +242,7 @@
 		return false;
 	}
 
-}));
+});
 
 $.extend($.ui.selectable, {
 	version: "@VERSION",
Index: ui/jquery.ui.widget.js
===================================================================
--- ui/jquery.ui.widget.js	(revision 3503)
+++ ui/jquery.ui.widget.js	(working copy)
@@ -20,20 +20,47 @@
 	return _remove.apply(this, arguments );
 };
 	
-	// $.widget is a factory to create jQuery plugins
-// taking some boilerplate code out of the plugin code
-$.widget = function(name, prototype) {
+$.widget = function(name, base, prototype) {
 	var namespace = name.split(".")[0],
 		fullName;
 	name = name.split(".")[1];
 	fullName = namespace + '-' + name;
 
+	if (!prototype) {
+		prototype = base;
+		base = $.Widget;
+	}
+
 	// create selector for plugin
 	$.expr[':'][fullName] = function(elem) {
 		return !!$.data(elem, name);
 	};
-	
-	// create plugin method
+
+	$[namespace] = $[namespace] || {};
+	$[namespace][name] = function(options, element) {
+		// allow instantiation without initializing for simple inheritance
+		(arguments.length && this._widgetInit(options, element));
+	};
+	$[namespace][name].prototype = $.extend(true, new base(), {
+		namespace: namespace,
+		widgetName: name,
+		widgetEventPrefix: $[namespace][name].prototype.widgetEventPrefix || name,
+		widgetBaseClass: fullName
+	}, prototype);
+
+	$.widget.bridge(name, $[namespace][name]);
+};
+
+$.widget.prototype = {
+	// DEPRECATED use and override _setOption instead, will be removed in 2.0
+	_setData: function() {},
+	// DEPRECATED call $.Widget.prototype.destroy directly, will be removed in 2.
+	destroy: function() {
+		$.Widget.prototype.destroy.apply(this, arguments);
+	}
+};
+
+$.widget.bridge = function(name, object) {
 	$.fn[name] = function(options) {
 		var isMethodCall = (typeof options == 'string'),
 			args = Array.prototype.slice.call(arguments, 1),
@@ -61,57 +88,44 @@
 				}
 			})
 			: this.each(function() {
-				($.data(this, name) ||
-					$.data(this, name, new $[namespace][name](this, options))._init());
+				($.data(this, name) || $.data(this, name, new object(options, this)));
 			}));
 
 		return returnValue;
 	};
-
-	// create widget constructor
-	$[namespace] = $[namespace] || {};
-	$[namespace][name] = function(element, options) {
-		var self = this;
+};
 
-		this.namespace = namespace;
-		this.widgetName = name;
-		this.widgetEventPrefix = $[namespace][name].eventPrefix || name;
-		this.widgetBaseClass = fullName;
+$.Widget = function(options, element) {
+	// allow instantiation without initializing for simple inheritance
+	(arguments.length && this._widgetInit(options, element));
+};
 
+$.Widget.prototype = {
+	widgetName: 'widget',
+	widgetEventPrefix: '',
+	options: {
+		disabled: false
+	},
+	_widgetInit: function(options, element) {
+		// $.widget.bridge stores the plugin instance, but we do it anyway
+		// so that it's stored even before the _init function runs
+		this.element = $(element).data(this.widgetName, this);
 		this.options = $.extend(true, {},
-			$.widget.defaults,
-			$[namespace][name].defaults,
-			$.metadata && $.metadata.get(element)[name],
+			this.options,
+			// DEPRECATED to be removed in 2.0; move defaults to prototype.options
+			$[this.namespace][this.widgetName].defaults,
+			$.metadata && $.metadata.get(element)[this.widgetName],
 			options);
-
-		this.element = $(element)
-			.bind('setData.' + name, function(event, key, value) {
-				if (event.target == element) {
-					return self._setData(key, value);
-				}
-			})
-			.bind('getData.' + name, function(event, key) {
-				if (event.target == element) {
-					return self._getData(key);
-				}
-			})
-			.bind('remove.' + name, function() {
-				return self.destroy();
-			});
-	};
-
-	// add widget prototype
-	$[namespace][name].prototype = $.extend({}, $.widget.prototype, prototype);
-};
-
-$.widget.prototype = {
-	_init: function() {},
+		(this._init && this._init(this.options, this.element));
+	},
+	
 	destroy: function() {
-		this.element.removeData(this.widgetName)
-			.removeClass(this.widgetBaseClass + '-disabled' + ' ' + this.namespace + '-state-disabled')
-			.removeAttr('aria-disabled');
-
-		return this;
+		this.element
+			.removeData(this.widgetName)
+			.removeAttr('aria-disabled')
+			.removeClass(
+				this.widgetBaseClass + '-disabled ' +
+				this.namespace + '-state-disabled');
 	},
 
 	option: function(key, value) {
@@ -120,22 +134,19 @@
 
 		if (typeof key == "string") {
 			if (value === undefined) {
-				return this._getData(key);
+				return this.options[key];
 			}
 			options = {};
 			options[key] = value;
 		}
 
 		$.each(options, function(key, value) {
-			self._setData(key, value);
+			self._setOption(key, value);
 		});
 
 		return self;
 	},
-	_getData: function(key) {
-		return this.options[key];
-	},
-	_setData: function(key, value) {
+	_setOption: function(key, value) {
 		this.options[key] = value;
 
 		if (key == 'disabled') {
@@ -145,15 +156,18 @@
 					this.namespace + '-state-disabled')
 				.attr("aria-disabled", value);
 		}
-	},
+		
+		// DEPRECATED use and override _setOption instead, will be removed in 2.0
+		(this._setData && this._setData.apply(this, arguments));
 
-	enable: function() {
-		this._setData('disabled', false);
 		return this;
 	},
+	
+	enable: function() {
+		return this._setOption('disabled', false);
+	},
 	disable: function() {
-		this._setData('disabled', true);
-		return this;
+		return this._setOption('disabled', true);
 	},
 
 	_trigger: function(type, event, data) {
@@ -181,9 +195,5 @@
 	}
 };
 
-$.widget.defaults = {
-	disabled: false
-};
-
 	
 })(jQuery);
Index: ui/jquery.ui.slider.js
===================================================================
--- ui/jquery.ui.slider.js	(revision 3503)
+++ ui/jquery.ui.slider.js	(working copy)
@@ -18,7 +18,7 @@
 // (how many times can you page up/down to go through the whole range)
 var numPages = 5;
 
-$.widget("ui.slider", $.extend({}, $.ui.mouse, {
+$.widget("ui.slider", $.ui.mouse, {
 
 	_init: function() {
 
@@ -593,7 +593,7 @@
 
 	}
 	
-}));
+});
 
 $.extend($.ui.slider, {
 	version: "@VERSION",
Index: ui/jquery.ui.sortable.js
===================================================================
--- ui/jquery.ui.sortable.js	(revision 3503)
+++ ui/jquery.ui.sortable.js	(working copy)
@@ -13,7 +13,7 @@
  */
 (function($) {
 
-$.widget("ui.sortable", $.extend({}, $.ui.mouse, {
+$.widget("ui.sortable", $.ui.mouse, {
 	_init: function() {
 
 		var o = this.options;
@@ -1017,7 +1017,7 @@
 		};
 	}
 
-}));
+});
 
 $.extend($.ui.sortable, {
 	version: "@VERSION",
Index: ui/jquery.ui.core.js
===================================================================
--- ui/jquery.ui.core.js	(revision 3503)
+++ ui/jquery.ui.core.js	(working copy)
@@ -223,153 +223,4 @@
 	}
 });
 
-/** Mouse Interaction Plugin **/
-
-$.ui.mouse = {
-	_mouseInit: function() {
-		var self = this;
-
-		this.element
-			.bind('mousedown.'+this.widgetName, function(event) {
-				return self._mouseDown(event);
-			})
-			.bind('click.'+this.widgetName, function(event) {
-				if(self._preventClickEvent) {
-					self._preventClickEvent = false;
-					event.stopImmediatePropagation();
-					return false;
-				}
-			});
-
-		// Prevent text selection in IE
-		if ($.browser.msie) {
-			this._mouseUnselectable = this.element.attr('unselectable');
-			this.element.attr('unselectable', 'on');
-		}
-
-		this.started = false;
-	},
-
-	// TODO: make sure destroying one instance of mouse doesn't mess with
-	// other instances of mouse
-	_mouseDestroy: function() {
-		this.element.unbind('.'+this.widgetName);
-
-		// Restore text selection in IE
-		($.browser.msie
-			&& this.element.attr('unselectable', this._mouseUnselectable));
-	},
-
-	_mouseDown: function(event) {
-		// don't let more than one widget handle mouseStart
-		// TODO: figure out why we have to use originalEvent
-		event.originalEvent = event.originalEvent || {};
-		if (event.originalEvent.mouseHandled) { return; }
-
-		// we may have missed mouseup (out of window)
-		(this._mouseStarted && this._mouseUp(event));
-
-		this._mouseDownEvent = event;
-
-		var self = this,
-			btnIsLeft = (event.which == 1),
-			elIsCancel = (typeof this.options.cancel == "string" ? $(event.target).parents().add(event.target).filter(this.options.cancel).length : false);
-		if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
-			return true;
-		}
-
-		this.mouseDelayMet = !this.options.delay;
-		if (!this.mouseDelayMet) {
-			this._mouseDelayTimer = setTimeout(function() {
-				self.mouseDelayMet = true;
-			}, this.options.delay);
-		}
-
-		if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
-			this._mouseStarted = (this._mouseStart(event) !== false);
-			if (!this._mouseStarted) {
-				event.preventDefault();
-				return true;
-			}
-		}
-
-		// these delegates are required to keep context
-		this._mouseMoveDelegate = function(event) {
-			return self._mouseMove(event);
-		};
-		this._mouseUpDelegate = function(event) {
-			return self._mouseUp(event);
-		};
-		$(document)
-			.bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
-			.bind('mouseup.'+this.widgetName, this._mouseUpDelegate);
-
-		// preventDefault() is used to prevent the selection of text here -
-		// however, in Safari, this causes select boxes not to be selectable
-		// anymore, so this fix is needed
-		($.browser.safari || event.preventDefault());
-
-		event.originalEvent.mouseHandled = true;
-		return true;
-	},
-
-	_mouseMove: function(event) {
-		// IE mouseup check - mouseup happened when mouse was out of window
-		if ($.browser.msie && !event.button) {
-			return this._mouseUp(event);
-		}
-
-		if (this._mouseStarted) {
-			this._mouseDrag(event);
-			return event.preventDefault();
-		}
-
-		if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
-			this._mouseStarted =
-				(this._mouseStart(this._mouseDownEvent, event) !== false);
-			(this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
-		}
-
-		return !this._mouseStarted;
-	},
-
-	_mouseUp: function(event) {
-		$(document)
-			.unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
-			.unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);
-
-		if (this._mouseStarted) {
-			this._mouseStarted = false;
-			this._preventClickEvent = (event.target == this._mouseDownEvent.target);
-			this._mouseStop(event);
-		}
-
-		return false;
-	},
-
-	_mouseDistanceMet: function(event) {
-		return (Math.max(
-				Math.abs(this._mouseDownEvent.pageX - event.pageX),
-				Math.abs(this._mouseDownEvent.pageY - event.pageY)
-			) >= this.options.distance
-		);
-	},
-
-	_mouseDelayMet: function(event) {
-		return this.mouseDelayMet;
-	},
-
-	// These are placeholder methods, to be overriden by extending plugin
-	_mouseStart: function(event) {},
-	_mouseDrag: function(event) {},
-	_mouseStop: function(event) {},
-	_mouseCapture: function(event) { return true; }
-};
-
-$.ui.mouse.defaults = {
-	cancel: ':input,option',
-	distance: 1,
-	delay: 0
-};
-
 })(jQuery);
