Remove all left-overs of call chaining, except for where it's in use.

src/basic/Rectangle.js

@@ -182,7 +182,6 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 		point = Point.read(arguments);
 		this.x = point.x;
 		this.y = point.y;
-		return this;
 	},
 
 
@@ -201,7 +200,6 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 		size = Size.read(arguments);
 		this.width = size.width;
 		this.height = size.height;
-		return this;
 	},
 
 	/**
@@ -220,7 +218,6 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 	setLeft: function(left) {
 		this.width -= left - this.x;
 		this.x = left;
-		return this;
 	},
 
 	/**
@@ -237,7 +234,6 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 	setTop: function(top) {
 		this.height -= top - this.y;
 		this.y = top;
-		return this;
 	},
 
 	/**
@@ -253,7 +249,6 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 
 	setRight: function(right) {
 		this.width = right - this.x;
-		return this;
 	},
 
 	/**
@@ -269,7 +264,6 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 
 	setBottom: function(bottom) {
 		this.height = bottom - this.y;
-		return this;
 	},
 
 	/**
@@ -285,7 +279,6 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 
 	setCenterX: function(x) {
 		this.x = x - this.width * 0.5;
-		return this;
 	},
 
 	/**
@@ -301,7 +294,6 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 
 	setCenterY: function(y) {
 		this.y = y - this.height * 0.5;
-		return this;
 	},
 
 	/**
@@ -319,7 +311,11 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 
 	setCenter: function(point) {
 		point = Point.read(arguments);
-		return this.setCenterX(point.x).setCenterY(point.y);
+		this.setCenterX(point.x);
+		this.setCenterY(point.y);
+		// A special setter where we allow chaining, because it comes in handy
+		// in a couple of places in core.
+		return this;
 	},
 
 	/**
@@ -736,8 +732,8 @@ var Rectangle = this.Rectangle = Base.extend(/** @lends Rectangle# */{
 			};
 			this[set] = function(point) {
 				point = Point.read(arguments);
-				// Note: call chaining happens here.
-				return this[setX](point.x)[setY](point.y);
+				this[setX](point.x);
+				this[setY](point.y);
 			};
 		}, {});
 });
@@ -810,7 +806,6 @@ var LinkedRectangle = Rectangle.extend({
 				proto[name].apply(this, arguments);
 				delete this._dontNotify;
 				this._owner[this._setter](this);
-				return this;
 			};
 		}, {
 			/**

src/color/Color.js

@@ -337,7 +337,6 @@ var Color = this.Color = Base.extend(new function() {
 								// All other values are 0..1
 								: Math.min(Math.max(value, 0), 1);
 							this._changed();
-							return this;
 						};
 					}, src);
 				}
@@ -434,7 +433,6 @@ var Color = this.Color = Base.extend(new function() {
 	setAlpha: function(alpha) {
 		this._alpha = alpha == null ? null : Math.min(Math.max(alpha, 0), 1);
 		this._changed();
-		return this;
 	},
 
 	/**

src/color/Gradient.js

@@ -107,7 +107,6 @@ var Gradient = this.Gradient = Base.extend(/** @lends Gradient# */{
 				stop.setRampPoint(i / (l - 1));
 		}
 		this._changed();
-		return this;
 	},
 
 	/**

src/color/GradientColor.js

@@ -147,7 +147,6 @@ var GradientColor = this.GradientColor = Color.extend(/** @lends GradientColor#
 		if (this._destination)
 			this._radius = this._destination.getDistance(this._origin);
 		this._changed();
-		return this;
 	},
 
 	/**
@@ -189,7 +188,6 @@ var GradientColor = this.GradientColor = Color.extend(/** @lends GradientColor#
 		this._destination = destination;
 		this._radius = this._destination.getDistance(this._origin);
 		this._changed();
-		return this;
 	},
 
 	/**
@@ -234,7 +232,6 @@ var GradientColor = this.GradientColor = Color.extend(/** @lends GradientColor#
 			this._hilite = hilite;
 		}
 		this._changed();
-		return this;
 	},
 
 	toCanvasStyle: function(ctx) {

src/core/Callback.js

@@ -18,31 +18,32 @@ var Callback = {
 	attach: function(type, func) {
 		// If an object literal is passed, attach all callbacks defined in it
 		if (typeof type !== 'string') {
-			return Base.each(type, function(value, key) {
+			Base.each(type, function(value, key) {
 				this.attach(key, value);
 			}, this);
+			return;
 		}
 		var entry = this._eventTypes[type];
-		if (!entry)
-			return this;
-		var handlers = this._handlers = this._handlers || {};
-		handlers = handlers[type] = handlers[type] || [];
-		if (handlers.indexOf(func) == -1) { // Not added yet, add it now
-			handlers.push(func);
-			// See if this is the first handler that we're attaching, and 
-			// call install if defined.
-			if (entry.install && handlers.length == 1)
-				entry.install.call(this, type);
+		if (entry) {
+			var handlers = this._handlers = this._handlers || {};
+			handlers = handlers[type] = handlers[type] || [];
+			if (handlers.indexOf(func) == -1) { // Not added yet, add it now
+				handlers.push(func);
+				// See if this is the first handler that we're attaching, and 
+				// call install if defined.
+				if (entry.install && handlers.length == 1)
+					entry.install.call(this, type);
+			}
 		}
-		return this;
 	},
 
 	detach: function(type, func) {
 		// If an object literal is passed, detach all callbacks defined in it
 		if (typeof type !== 'string') {
-			return Base.each(type, function(value, key) {
+			Base.each(type, function(value, key) {
 				this.detach(key, value);
 			}, this);
+			return;
 		}
 		var entry = this._eventTypes[type],
 			handlers = this._handlers && this._handlers[type],
@@ -60,7 +61,6 @@ var Callback = {
 				handlers.splice(index, 1);
 			}
 		}
-		return this;
 	},
 
 	fire: function(type, event) {

src/item/Group.js

@@ -116,7 +116,6 @@ var Group = this.Group = Item.extend(/** @lends Group# */{
 		var child = this.getFirstChild();
 		if (child)
 			child.setClipMask(clipped);
-		return this;
 	},
 
 	draw: function(ctx, param) {

src/item/Item.js

@@ -2089,6 +2089,7 @@ var Item = this.Item = Base.extend(Callback, {
 			// Transform position as well.
 			this._position = matrix._transformPoint(position, position);
 		}
+		// Allow chaining here, since transform() is related to Matrix functions
 		return this;
 	},
 

src/style/Style.js

@@ -118,13 +118,12 @@ var Style = Base.extend({
 					return style;
 				};
 				// Style-getters and setters for owner class:
-				owner[set] = function(value) {
-					this[styleKey][set](value);
-					return this;
-				};
 				owner[get] = function() {
 					return this[styleKey][get]();
 				};
+				owner[set] = function(value) {
+					this[styleKey][set](value);
+				};
 			});
 			src._owner.inject(owner);
 			// Pass on to base()

src/ui/Event.js

@@ -22,17 +22,16 @@ var Event = this.Event = Base.extend(/** @lends Event# */{
 	preventDefault: function() {
 		this._prevented = true;
 		DomEvent.preventDefault(this.event);
-		return this;
 	},
 
 	stopPropagation: function() {
 		this._stopped = true;
 		DomEvent.stopPropagation(this.event);
-		return this;
 	},
 
 	stop: function() {
-		return this.stopPropagation().preventDefault();
+		this.stopPropagation();
+		this.preventDefault();
 	},
 
 	// DOCS: Document Event#modifiers