1 files changed, 61 insertions, 0 deletions
diff --git a/js/dojo/dojox/drawing/manager/Undo.js b/js/dojo/dojox/drawing/manager/Undo.js
new file mode 100644
index 0000000..c904240
--- /dev/null
+++ b/js/dojo/dojox/drawing/manager/Undo.js
@@ -0,0 +1,61 @@
+//>>built
+// wrapped by build app
+define("dojox/drawing/manager/Undo", ["dijit","dojo","dojox"], function(dijit,dojo,dojox){
+dojo.provide("dojox.drawing.manager.Undo");
+
+dojox.drawing.manager.Undo = dojox.drawing.util.oo.declare(
+	// summary
+	//	Handles the Undo in drawing.
+	//	NOTE: Only partially implemented!!! There is very
+	//		little actual undo functionality!
+	//
+	function(options){
+		this.keys = options.keys;
+		this.undostack = [];
+		this.redostack = [];
+		dojo.connect(this.keys, "onKeyDown", this, "onKeyDown");
+	},
+	{
+		onKeyDown: function(evt){
+			if(!evt.cmmd){ return; }
+			
+			if(evt.keyCode==90 && !evt.shift){
+				this.undo();
+			}else if((evt.keyCode == 90 && evt.shift) || evt.keyCode==89){
+				this.redo();
+			}
+			
+		},
+		add: function(stack){
+			//console.log("undo add", stack)
+			stack.args = dojo.mixin({}, stack.args);
+			this.undostack.push(stack);
+		},
+		apply: function(scope, method, args){
+			dojo.hitch(scope, method)(args);
+		},
+		undo: function(){
+			
+			var o = this.undostack.pop();
+			console.log("undo!", o);
+			if(!o){ return; }
+			
+			o.before();
+			
+			this.redostack.push(o);
+		},
+		redo: function(){
+			console.log("redo!");
+			var o = this.redostack.pop();
+			if(!o){ return; }
+			if(o.after){
+				o.after();
+			}else{
+				o.before(); ///??????
+			}
+			
+			this.undostack.push(o);
+		}
+	}
+);
+});