This is an updated version of DraggableController. It has been modified by Nicolas Zeh and includes these changes:
* a new name: DragController
* drag and drop multiple items at once if multipleSelection is set to true for a component
* added the following methods to the DragEvent Object:
evt.checkType - check a component's type
evt.addItem - add the source_item to the target_component at target_index (returns true on success otherwise false)
evt.removeItem - remove the source_item from the source_component (returns true on success otherwise false)
evt.addAndRemoveItem - for doing both of the prior operations
* the methods were renamed to fit Macromedias naming conventions for methods, i.e. starting lower case with no underscores:
AddReference -> addReference
RemoveReference -> removeReference
Veto -> veto
Skip -> skip

* i lowered the addReference restriction that both components have to be UIComponents. Now only the source has to be an UIComponent and the target suffices to be a MovieClip.

* added a veto method for the "drag_start" event. So user can decide on this Event if he would like to allow dragging of this specific item.

* added an onDropData method besides the Event handlers. So you can assign this method directly to a defined target component.

* added flags similar to DragAndDropTree component. These are:
DENYDRAGFOLDER (only tree component)
DENYDRAGITEM (only tree component, as i makes no sense for other components)
DENYDROPINTOITEM (only tree component)
DENYDROPINTOFOLDER (only tree component)
DENYDROPINTO (only tree component)
DENYDROPINBETWEEN this option disallows setting a specific target index position and will add the item at the end of the List, DataGrid, Tree

* removed some bugs concerning Focus on Component and selectedItems. But i am not sure if there aren't some left due to Flash's strange Focus mechanisms. (sure, I still haven't understood the focus mechnism of MM components)

There's also a very comprehensive help of the component (just look in the F1 flash help panel)

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