WebContent/src/base/components/omcharts/ompiechart.lzx

<!---
    @access public
    @topic Components
    @subtopic Charts
  -->
<library>
    
    <!---
          A pie chart represents a chart that is displayed in the 2D
          polar plane. This class inherits immediately from chart class
          and can be instantiated directly. (Warning: Of beta quality.)
          @access public
          -->
    <class name="ompiechart" extends="chart">

        <!--- @keywords private -->
        <method name="init">
            plotarea = this.getNodeOfClass("piechartplotarea");
            _datalabelpool = this.createLabelViewspool();
            super.init();            
        </method>  
        
        <!--- Renders the plot area which is an instance of the piechartplotarea 
              class. The plot area requires to read a group of two data series, one
              for the groups that are represented by the pie slices and the second
              for their values. -->
        <method name="renderPlotArea">
        <![CDATA[
            super.renderPlotArea();
            plotarea.clear();

            var topseries = this.getOMDataSeries();
            
            //var numSeries = topseries.getNumDataSeries();
            var numSeries = 1;
            
            var xseries = topseries.xseries;
            var yseries = topseries.yseries;
            var tooltipseries = topseries.tooltipseries;
                                
            for(var i = 0; i < numSeries; i++)
            {
                plotarea.renderSeries(xseries, yseries, tooltipseries);          
            }
            if ( this.datalabelEnabled ){
                this.renderDataLabels();
            }

        ]]>
        </method>
        
        <!--- Renders the labels that display the values of the data series. -->
        <method name="renderDataLabels">
        
            <![CDATA[
                _datalabelpool.reclaimAll();
            
                var arrPiePieces = this.plotarea.arrPiePieces;
                var topseries = this.getOMDataSeries();
                
                var xseries = topseries.xseries;
                var yseries = topseries.yseries;
                var tooltipseries = topseries.tooltipseries;
                
                if ($debug) Debug.write("arrPiePieces.length ",arrPiePieces.length);

                for(var i = 0; i < arrPiePieces.length; i++){ 
                    piePiece = arrPiePieces[i];  
                    
                    var lbl = _datalabelpool.getView();
                    var ldatastyle = piePiece.style;
                    lbl.setAttribute('style', ldatastyle.label);
                    lbl.render(yseries[i]);
                    piePiece.renderLabel(lbl);
                }
            ]]>
                
        </method>
        
        <!--- The plot area where the pie slices are rendered -->
        <piechartplotarea name="plotarea" x="50" y="20" width="500" height="300">
        	
        </piechartplotarea>

    </class>
    
</library>