Road To Flex-6

for loop has two flavors in AS3.0. One is the regular vanilla: for(var i:int;i<somecol.length;i++){}. The other looks like this: for each(var p:Object in someCollection){}.

You can call a function from the parent MXML document as:
if(this.parentDocument.parentFunction!= null){
this.parentDocument.parentFunction(param1);
}
But this is not a good practice. Can be handled using events.
Another not so good way for a component to call a function from the top level application:
mx.core.Application.application.funcToCall(params);

Use TitleWindow class+PopUpManager class to make a modal window. TitleWindow well suited. Has a showCloseButton property.

To create a popup using PopUpManager, use PopUpManager.createPopUp(parent, popUpWinClass, isModal); This method returns IFlexDisplayObject.

Use PopUpManager.removePopUp(this); to execute the actual close ie removing the popup.

UIComponent -> Container, Button, NumericStepper, ComboBase
Container -> Box, Form
Box -> VBox, HBox
ComboBase -> ComboBox

Questions:

1. Your child component need to call a function from the parent component. How will you handle it?
2. A component needs to call a function from the top level application. How can this be done?
3. How would you work on making a popup?
4. What is syntax for the for loop in AS3.0?