ActionScript 2.0 Components Language Reference 
ActionScript 2.0 Components Language Reference |
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Flash Player 6 (6.0.79.0).
Flash MX 2004.
comboBoxInstance.dataProvider
Property; the data model for items viewed in a list. The value of this property can be an array or any object that implements the DataProvider API. The default value is []. The List component and the ComboBox component share the dataProvider property, and changes to this property are immediately available to both components.
The List component, like other data-aware components, adds methods to the Array object's prototype so that they conform to the DataProvider API (see DataProvider.as for details). Therefore, any array that exists at the same time as a list automatically has all the methods (addItem(), getItemAt(), and so on) needed for it to be the model of a list, and can be used to broadcast model changes to multiple components.
If the array contains objects, the labelField or labelFunction property is accessed to determine what parts of the item to display. The default value is "label", so if such a field exists, it is chosen for display; if not, a comma-separated list of all fields is displayed.
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NOTE |
If the array contains strings at each index, and not objects, the list is not able to sort the items and maintain the selection state. Any sorting causes the selection to be lost. |
Any instance that implements the DataProvider API is eligible as a data provider for a List component. This includes Flash Remoting RecordSet objects, Firefly DataSet components, and so on.
This example uses an array of strings to populate the drop-down list for the ComboBox component instance my_cb:
my_cb.dataProvider = [{data:1, label:"First Item"}, {data:2, label:"Second Item"}];
/* is the same as
my_cb.addItem({data:1, label:"First Item"});
my_cb.addItem({data:2, label:"Second Item"});
*/
This example creates a data provider array and assigns it to the dataProvider property:
var myDP:Array = new Array();
list.dataProvider = myDP;
for (var i:Number = 0; i < accounts.length; i++) {
// These changes to the DataProvider will be broadcast to the list.
myDP.addItem({label: accounts[i].name,
data: accounts[i].accountID});
}
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