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02.14.2008 at 10:06AM PST, ID: 23163783
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9.2

Actionscript 3 Flash CS3 data providers

Asked by glhelinski in Macromedia Flash, Miscellaneous Programming, Adobe Creative Suite

Tags: , , ,

Hello,

I'm trying to learn Flash CS3 and Actionscript all at one shot.  There are very good examples at the url listed below but lots of them have steps like these 3 below.  I guess I know how to do 1 (add the labels, buttons, etc).  #2 I can figure out I think BUT... #3 set the document class in the FLA file to DataProviderExample.  I have no idea what this means and I cannot find any clues anywhere.
I'm clueless:-)

I think my steps would be to go into Flash, create an FLA and make the labels and buttons myself and name the instances of each.
Then for each components I place on the stage, comment out where they are declared below such as:

"//var description:Label = new Label();"
etc

But what does #3 mean?

Am I beyond help?

Thanks...the url is below.
see code snippet

http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/fl/data/DataProvider.html#getItemAt()

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//This example demonstrates how data providers can be used to maintain the contents of several data grids. 
//To run the example, follow these steps:
 
//1 Add the Label, Button, ComboBox, TextInput, and DataGrid components to the library. 
//2 Save this code as DataProviderExample.as in the same directory as your FLA file. 
//3 Set the Document class in the FLA file to DataProviderExample. 
 
 
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);
        }
    }
}
[+][-]02.18.2008 at 03:59AM PST, ID: 20919142

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About this solution

Zones: Macromedia Flash, Miscellaneous Programming, Adobe Creative Suite
Tags: Adobe, Flash, CS3, using Actionscript 3.0
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Solution Provided By: blue-genie
Participating Experts: 1
Solution Grade: B
 
 
 
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