Rename Paper to paper, implement it as an object literal and add paper.populate() and paper.install() methods that do the bootstraping.

examples/Animated/RoundedRectangles.html

@@ -58,7 +58,7 @@
 				}
 			});
 			
-			var children = Paper.document.activeLayer.children;
+			var children = paper.document.activeLayer.children;
 			var count = 0;
 			function draw() {
 				count++;

src/Paper.js

@@ -1,10 +0,0 @@
-var Paper = Base.extend({
-	statics: {
-		documents: [],
-		activateDocument: function(doc) {
-			var index = this.documents.indexOf(doc);
-			if (index != -1)
-				this.document = this.documents[index];
-		}
-	}
-});

src/build.js

@@ -1,6 +1,6 @@
 (function(scope) {
 
-#include "Paper.js"
+#include "paper.js"
 
 #include "basic/Point.js"
 #include "basic/Size.js"
@@ -36,15 +36,7 @@
 #include "tool/ToolHandler.js"
 #include "tool/Tool.js"
 
-// Now inject all these local prototypes into the paper scope.
-Base.each(['Point', 'Size', 'Rectangle', 'Matrix', 'DocumentView', 'Doc',
-	'Symbol', 'Item', 'Group', 'Layer', 'Raster', 'PlacedSymbol', 'PathStyle',
-	'Segment', 'Curve', 'PathItem', 'Path', 'CompoundPath', 'Color', 'RGBColor',
-	'GrayColor', 'GradientColor', 'Gradient', 'GradientStop', 'ToolEvent',
-	'ToolHandler', 'Tool'],
-	function(name) {
-		scope[name] = eval(name);
-	}
-);
+paper.populate();
+paper.install(scope);
 
 })(this);

src/document/Doc.js

@@ -13,7 +13,7 @@ var Doc = Base.extend({
 		}
 		this.bounds = new Rectangle(new Point(0, 0), this.size);
 		this.ctx = this.canvas.getContext('2d');
-		Paper.documents.push(this);
+		paper.documents.push(this);
 		this.activate();
 		this.layers = [];
 		this.activeLayer = new Layer();
@@ -32,7 +32,12 @@ var Doc = Base.extend({
 	},
 
 	activate: function() {
-		Paper.activateDocument(this);
+		var index = paper.documents.indexOf(this);
+		if (index != -1) {
+			paper.document = this;
+			return true;
+		}
+		return false;
 	},
 
 	draw: function() {

src/document/Symbol.js

@@ -2,7 +2,7 @@ var Symbol = Base.extend({
 	beans: true,
 
 	initialize: function(item) {
-		this.document = Paper.document;
+		this.document = paper.document;
 		this.document.symbols.push(this);
 		this.definition = item;
 	},

src/item/Item.js

@@ -2,7 +2,7 @@ var Item = Base.extend({
 	beans: true,
 
 	initialize: function() {
-		Paper.document.activeLayer.appendTop(this);
+		paper.document.activeLayer.appendTop(this);
 		this.style = this.document.currentStyle;
 	},
 	

src/item/Layer.js

@@ -3,7 +3,7 @@ var Layer = Group.extend({
 
 	initialize: function() {
 		this.children = [];
-		this.document = Paper.document;
+		this.document = paper.document;
 		this.document.layers.push(this);
 		this.activate();
 	},

src/paper.js

@@ -0,0 +1,23 @@
+var paper = {
+	document: null,
+	documents: [],
+
+	populate: function() {
+		// Inject all prototypes from the paper scope into the paper object.
+		Base.each(['Point', 'Size', 'Rectangle', 'Matrix', 'DocumentView',
+			'Doc', 'Symbol', 'Item', 'Group', 'Layer', 'Raster', 'PlacedSymbol',
+			'PathStyle', 'Segment', 'Curve', 'PathItem', 'Path', 'CompoundPath',
+			'Color', 'RGBColor', 'GrayColor', 'GradientColor', 'Gradient',
+			'GradientStop', 'ToolEvent', 'ToolHandler', 'Tool'],
+			function(name) {
+				paper[name] = eval(name);
+			}
+		);
+	},
+
+	install: function(scope) {
+		for (var i in paper) {
+			scope[i] = paper[i];
+		}
+	}
+};

src/tool/Tool.js

@@ -10,14 +10,14 @@ var Tool = ToolHandler.extend(new function() {
 
 		initialize: function(handlers, doc) {
 			this.base(handlers);
-			if (Paper.document)
-				this.document = Paper.document;
+			if (paper.document)
+				this.document = paper.document;
 		},
 
 		setDocument: function(doc) {
 			if (this._document)
 				$(this._document.canvas).removeEvents();
-			this._document = doc || Paper.document;
+			this._document = doc || paper.document;
 			var that = this, curPoint;
 			var dragging = false;
 			var events = {

test/tests/item.js

@@ -112,9 +112,9 @@ test('isGroupedWith', function() {
 	equals(secondGroup.isDescendant(path), false);
 	equals(secondGroup.isDescendant(secondGroup), false);
 	equals(path.isGroupedWith(secondGroup), false);
-	Paper.document.activeLayer.appendTop(path);
+	paper.document.activeLayer.appendTop(path);
 	equals(path.isGroupedWith(secondPath), false);
-	Paper.document.activeLayer.appendTop(secondPath);
+	paper.document.activeLayer.appendTop(secondPath);
 	equals(path.isGroupedWith(secondPath), false);
 });