/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/

dojo.provide("dojo.charting.svg.PlotArea");
dojo.require("dojo.lang.common");

if(dojo.render.svg.capable){
	dojo.require("dojo.svg");
	dojo.extend(dojo.charting.PlotArea, {
		initializePlot: function(plot){
			//	summary
			//	Initialize the plot node for data rendering.
			plot.destroy();
			plot.dataNode = document.createElementNS(dojo.svg.xmlns.svg, "g");
			plot.dataNode.setAttribute("id", plot.getId());
			return plot.dataNode;	//	SVGGElement
		},
		initialize: function(){
			//	summary
			//	Initialize the PlotArea.
		
			this.destroy();	//	kill everything first.
			
			//	start with the background
			this.nodes.main = document.createElement("div");

			this.nodes.area = document.createElementNS(dojo.svg.xmlns.svg, "svg");
			this.nodes.area.setAttribute("id", this.getId());
			this.nodes.area.setAttribute("width", this.size.width);
			this.nodes.area.setAttribute("height", this.size.height);
			this.nodes.main.appendChild(this.nodes.area);

			var area=this.getArea();
			var defs = document.createElementNS(dojo.svg.xmlns.svg, "defs");
			var clip = document.createElementNS(dojo.svg.xmlns.svg, "clipPath");
			clip.setAttribute("id",this.getId()+"-clip");
			var rect = document.createElementNS(dojo.svg.xmlns.svg, "rect");		
			rect.setAttribute("x", area.left);
			rect.setAttribute("y", area.top);
			rect.setAttribute("width", area.right-area.left);
			rect.setAttribute("height", area.bottom-area.top);
			clip.appendChild(rect);
			defs.appendChild(clip);
			this.nodes.area.appendChild(defs);
			
			this.nodes.background = document.createElementNS(dojo.svg.xmlns.svg, "rect");
			this.nodes.background.setAttribute("id", this.getId()+"-background");
			this.nodes.background.setAttribute("width", this.size.width);
			this.nodes.background.setAttribute("height", this.size.height);
			this.nodes.background.setAttribute("fill", "#fff");
			this.nodes.area.appendChild(this.nodes.background);

			this.nodes.plots = document.createElementNS(dojo.svg.xmlns.svg, "g");
			this.nodes.plots.setAttribute("id", this.getId()+"-plots");
			this.nodes.plots.setAttribute("style","clip-path:url(#"+this.getId()+"-clip);");
			this.nodes.area.appendChild(this.nodes.plots);

			for(var i=0; i<this.plots.length; i++){
				this.nodes.plots.appendChild(this.initializePlot(this.plots[i]));
			}

			//	do the axes
			this.nodes.axes = document.createElementNS(dojo.svg.xmlns.svg, "g");
			this.nodes.axes.setAttribute("id", this.getId()+"-axes");
			this.nodes.area.appendChild(this.nodes.axes);
			var axes = this.getAxes();
			for(var p in axes){
				var obj = axes[p];
				this.nodes.axes.appendChild(obj.axis.initialize(this, obj.plot, obj.drawAgainst, obj.plane));
			}
			return this.nodes.main;	//	HTMLDivElement
		}
	});
}
