DataProvider  - AS3 Flash

package
{
    import fl.controls.Button;
    import fl.controls.ComboBox;
    import fl.controls.DataGrid;
    import fl.controls.Label;
    import fl.controls.TextInput;
    import fl.data.DataProvider;
    import flash.display.Sprite;
    import flash.events.*;
    import flash.text.TextFieldAutoSize;
    
    public class DataProviderExample extends Sprite
    {        
        private var southern:DataGrid;
        private var northern:DataGrid;
        private var world:DataGrid;
        private var southernRoster:DataProvider;
        private var northernRoster:DataProvider;
        private var leagueCB:ComboBox;
        private var nameTI:TextInput;
        private var goalsTI:TextInput;
        private var submitBtn:Button;

        public function DataProviderExample() {
            southernRoster = new DataProvider();
            northernRoster = new DataProvider();
            
            createDataGrids();
            createUI();
        }

        private function createUI():void {
            var description:Label = new Label();
            description.text = "Enter player's name, goals scored, and hemisphere of origin:";
            description.autoSize = TextFieldAutoSize.LEFT;
            nameTI = new TextInput();
            goalsTI = new TextInput();
            
            var submitBtn:Button = new Button();
            submitBtn.label = "Submit Player";
            submitBtn.addEventListener(MouseEvent.CLICK, submitPlayer);
            
            leagueCB = new ComboBox();
            leagueCB.addItem( { label:"Northern", data: 0 } );
            leagueCB.addItem( { label:"Southern", data: 1 } );
            
            description.move(10,10);
            nameTI.move(10,40);
            nameTI.setSize(150,24);
            goalsTI.move(170,40);
            goalsTI.setSize(40,24);
            leagueCB.move(220,40);
            leagueCB.setSize(120,24);
            submitBtn.move(350,40);
            goalsTI.restrict = "0123456789";
            
            addChild(description);
            addChild(leagueCB);
            addChild(submitBtn);
            addChild(nameTI);
            addChild(goalsTI);
        }
        private function submitPlayer(e:MouseEvent):void {
            if(nameTI.text != "" && goalsTI.text != "") {
                var targetRoster:DataProvider;

                if(leagueCB.selectedItem.label == "Southern") {
                    targetRoster = southernRoster;
                }
                else {
                    targetRoster = northernRoster;
                }
    
                targetRoster.addItem( { Name: nameTI.text, Goals: goalsTI.text } );
                
                var worldRoster:DataProvider = southernRoster.clone();
                worldRoster.merge(northernRoster);
                worldRoster.sortOn("Goals", Array.NUMERIC | Array.DESCENDING);
                southernRoster.sortOn("Goals", Array.NUMERIC | Array.DESCENDING);
                northernRoster.sortOn("Goals", Array.NUMERIC | Array.DESCENDING);
                
                world.dataProvider = worldRoster;
                
                nameTI.text = "";
                goalsTI.text = "";
            }
        }        

        private function createDataGrids():void {
            southern = new DataGrid();
            northern = new DataGrid();
            world = new DataGrid();
            southern.move(10,100);
            northern.move(180,100);
            world.move(350,100);
            southern.setSize(170, 250);
            northern.setSize(170, 250);
            world.setSize(170, 250);
            southern.columns = 
            northern.columns = 
            world.columns = [ "Name", "Goals" ];
            southern.dataProvider = southernRoster;
            northern.dataProvider = northernRoster;            
            addChild(southern);
            addChild(northern);
            addChild(world);

            var northernLabel:Label = new Label();
            northernLabel.autoSize = TextFieldAutoSize.LEFT;
            northernLabel.text = "Southern Hemisphere";
            northernLabel.move(10,75);
            addChild(northernLabel);
            var southernLabel:Label = new Label();
            southernLabel.autoSize = TextFieldAutoSize.LEFT;
            southernLabel.text = "Northern Hemisphere";
            southernLabel.move(180,75);
            addChild(southernLabel);
            var majorLabel:Label = new Label();
            majorLabel.autoSize = TextFieldAutoSize.LEFT;
            majorLabel.text = "World";
            majorLabel.move(350,75);
            addChild(majorLabel);
        }
    }
}