MACROMEDIA FLEX 2-MIGRATING APPLICATIONS TO FLEX 2 Manuale Utente Scaricare il pdf (Pagina 92)

92 Flex Classes

mx.managers.DragManager

Instead of setting event.handled inside the dragEnter event listener, you must call the

DragManager.acceptDragDrop(event.target) method.

You cannot set the

action property of the event object. Instead, you must call the

setFeedback() method. For example, change the following code:

event.action=DragManager.Link;

to the following:

DragManager.showFeedback(DragManager.LINK);

This applies to all actions: MOVE, LINK, COPY, NONE.

The signature to the

doDrag() method has changed. There is no longer an imageInitObj

argument, and there are two new arguments:

mouseEvent and allowMove.

When using the

doDrag() method and dragging text-based controls, you should use the

currentTarget property of the Event object instead of the target property. This is because

of the way text-based controls react during the bubbling event phase.

For a detailed description of these changes and a conversion example, see “Using the drag-

and-drop feature” on page 178.

mx.managers.FocusManager

The following table describes changes to the FocusManager class:

mx.managers.LayoutManager

The following table describes changes to the LayoutManager class:

Member Change description

isParentOf()

Removed. Use the contains() method on the

DisplayObjectContainer class.

Member Change description

updateNow() validateNow()

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MACROMEDIA FLEX 2-MIGRATING APPLICATIONS TO FLEX 2 Manuale Utente Pagina 92