a:20:{s:9:"#provides";s:22:"dojox.sketch.UndoStack";s:9:"#resource";s:19:"sketch/UndoStack.js";s:9:"#requires";a:1:{i:0;a:2:{i:0;s:6:"common";i:1;s:19:"dojox.xml.DomParser";}}s:22:"dojox.sketch.UndoStack";a:5:{s:4:"type";s:8:"Function";s:10:"parameters";a:1:{s:6:"figure";a:1:{s:4:"type";s:0:"";}}s:6:"source";s:66:"			this.figure=figure;
			this._steps=[];
			this._undoedSteps=[];";s:9:"classlike";b:1;s:7:"summary";s:0:"";}s:28:"dojox.sketch.UndoStack.apply";a:5:{s:9:"prototype";s:22:"dojox.sketch.UndoStack";s:4:"type";s:8:"Function";s:10:"parameters";a:3:{s:5:"state";a:1:{s:4:"type";s:0:"";}s:4:"from";a:1:{s:4:"type";s:0:"";}s:2:"to";a:1:{s:4:"type";s:0:"";}}s:6:"source";s:1518:"dojo.provide("dojox.sketch.UndoStack");
dojo.require("dojox.xml.DomParser");


(function(){
	var ta=dojox.sketch;
	ta.CommandTypes={ Create:"Create", Move:"Move", Modify:"Modify", Delete:"Delete", Convert:"Convert"};


	dojo.declare("dojox.sketch.UndoStack",null,{
		constructor: function(figure){
			this.figure=figure;
			this._steps=[];
			this._undoedSteps=[];
		},
		apply: function(state, from, to){
			//	the key here is to neutrally move from one state to another.
			//	we let the individual functions (i.e. undo and redo) actually
			//	determine the from and to; all we do here is implement it.


			//	check whether this is a fullText step
			if(!from && !to && state.fullText){
				this.figure.setValue(state.fullText);
				return;
			}


			var fromText=from.shapeText;
			var toText=to.shapeText;

			
			if(fromText.length==0&&toText.length==0){
				//	nothing to reapply?
				return;
			}
			if(fromText.length==0){
				//	We are creating.
				var o=dojox.xml.DomParser.parse(toText).documentElement;
				var a=this.figure._loadAnnotation(o);
				if(a) this.figure._add(a);
				return;
			}
			if(toText.length==0){
				//	we are deleting.
				var ann=this.figure.get(from.shapeId);
				this.figure._delete([ann],true);
				return;
			}

			
			//	we can simply reinit and draw from the shape itself,
			//		regardless of the actual command.
			var nann=this.figure.get(to.shapeId);
			var no=dojox.xml.DomParser.parse(toText).documentElement;
			nann.draw(no);
			this.figure.select(nann);
			return;";s:7:"summary";s:0:"";}s:26:"dojox.sketch.UndoStack.add";a:5:{s:9:"prototype";s:22:"dojox.sketch.UndoStack";s:4:"type";s:8:"Function";s:10:"parameters";a:3:{s:3:"cmd";a:1:{s:4:"type";s:6:"String";}s:3:"ann";a:2:{s:8:"optional";b:1;s:4:"type";s:13:"ta.Annotation";}s:6:"before";a:2:{s:8:"optional";b:1;s:4:"type";s:6:"String";}}s:6:"source";s:572:"			var id=ann?ann.id:'';
			//var bbox=ann?ann.getBBox():{};
			var after=ann?ann.serialize():"";
			if(cmd==ta.CommandTypes.Delete){ after=""; }

			
			/*if(ann){
				//	fix the bbox x/y coords
				var t=ann.transform;
				bbox.x+=t.dx;
				bbox.y+=t.dy;
			}*/
			var state={
				cmdname:cmd,
				//bbox:bbox,
//					fullText:fullText,
				before:{
					shapeId: id,
					shapeText:before||''
				},
				after:{
					shapeId: id,
					shapeText:after
				}
			};
			//console.log('dojox.sketch history add',state);
			this._steps.push(state);
			this._undoedSteps = [];";s:7:"summary";s:0:"";}s:30:"dojox.sketch.UndoStack.destroy";a:4:{s:9:"prototype";s:22:"dojox.sketch.UndoStack";s:4:"type";s:8:"Function";s:6:"source";s:3:"}  ";s:7:"summary";s:0:"";}s:27:"dojox.sketch.UndoStack.undo";a:5:{s:9:"prototype";s:22:"dojox.sketch.UndoStack";s:4:"type";s:8:"Function";s:6:"source";s:133:"			var state=this._steps.pop();
			if(state){
				this._undoedSteps.push(state);
				this.apply(state,state.after,state.before);
			}";s:6:"chains";a:1:{s:4:"call";a:1:{i:0;s:4:"this";}}s:7:"summary";s:0:"";}s:27:"dojox.sketch.UndoStack.redo";a:5:{s:9:"prototype";s:22:"dojox.sketch.UndoStack";s:4:"type";s:8:"Function";s:6:"source";s:133:"			var state=this._undoedSteps.pop();
			if(state){
				this._steps.push(state);
				this.apply(state,state.before,state.after);
			}";s:6:"chains";a:1:{s:4:"call";a:1:{i:0;s:4:"this";}}s:7:"summary";s:0:"";}s:35:"dojox.sketch.UndoStack._undoedSteps";a:3:{s:8:"instance";s:22:"dojox.sketch.UndoStack";s:7:"private";b:1;s:7:"summary";s:0:"";}s:29:"dojox.sketch.UndoStack.figure";a:2:{s:8:"instance";s:22:"dojox.sketch.UndoStack";s:7:"summary";s:0:"";}s:29:"dojox.sketch.UndoStack._steps";a:3:{s:8:"instance";s:22:"dojox.sketch.UndoStack";s:7:"private";b:1;s:7:"summary";s:0:"";}s:25:"dojox.sketch.CommandTypes";a:2:{s:4:"type";s:6:"Object";s:7:"summary";s:0:"";}s:32:"dojox.sketch.CommandTypes.Create";a:1:{s:7:"summary";s:0:"";}s:30:"dojox.sketch.CommandTypes.Move";a:1:{s:7:"summary";s:0:"";}s:32:"dojox.sketch.CommandTypes.Modify";a:1:{s:7:"summary";s:0:"";}s:32:"dojox.sketch.CommandTypes.Delete";a:1:{s:7:"summary";s:0:"";}s:33:"dojox.sketch.CommandTypes.Convert";a:1:{s:7:"summary";s:0:"";}s:12:"dojox.sketch";a:2:{s:4:"type";s:6:"Object";s:7:"summary";s:0:"";}s:5:"dojox";a:2:{s:4:"type";s:6:"Object";s:7:"summary";s:0:"";}}