Dynamic charts - Page 5

Creating the dynamic text fields

Next we're going to create text fields so we can enter data for the chart. The user will select the number of text fields to enter, fill them in and then click the Update chart button. The data labels and values will be transferred to the chart.

I added the change handler function drawFields to the combo box in the property inspector. After the user has selected the number of fields to add, the function will generate the input boxes to the right of the chart to allow the data to be entered. The function is shown below and is broken down on the following pages.

function drawFields(component) {

   //remove fields

   removeTextFields();



   //get number of fields

   var NumFieldsDraw = component.getSelectedItem().data;



   //text format

   Tformat = new TextFormat();

   Tformat.font = "Verdana";

   Tformat.size = 10;



   //label format

   Lformat = new TextFormat();

   Lformat.bold = true;

   Lformat.font = "Verdana";

   Lformat.size = 10;



   //dynamically create text fields

   for (var i=0; i < NumFieldsDraw; i++) {

      //instanceName,depth,x,y,width,height

      this.createTextField("ChartLabel"+i,i,380,90+(i*25),110,20);

      this["ChartLabel"+i].text = "Enter Chart Label";

      this["ChartLabel"+i].type = "input";

      this["ChartLabel"+i].setTextFormat(Lformat);

      this["ChartLabel"+i].setNewTextFormat(Lformat);
	
	

      this.createTextField("ChartValue"+i,100+i,500,90+(i*25),110,20);

      this["ChartValue"+i].text = "Enter Chart Value";

      this["ChartValue"+i].type = "input";

      this["ChartValue"+i].border = true;

      this["ChartValue"+i].setTextFormat(Tformat);

      this["ChartValue"+i].setNewTextFormat(Tformat);

   }

}