what is EU. i searched in documentation and google,i could't find its decription.
On Thu, Apr 8, 2010 at 4:52 AM, Greg Hess <[email protected]> wrote: > > > Hi All, > > I have a tree component that supports drag and drop. However, I need to > prevent the EU from dropping into a specific node. I would like to display > the "red x" indicator over this specific node and have the drop rejected. > > I first tried to get this to work in my DragEnter event handler and not > accepting the dragDrop if the target item was one of these specific nodes > but would only work if I entered over the specific item and I need it to > update as the EU drags over the items in the tree. My next attempt after > reading some posts was to toggle the tree.dropEnabled property in my > DragOver event handler, I have been able to get it to work... but I cant > figure out why, this is my code: > > *****Drag Over logic**** > > var dropTarget:Tree = Tree(dragEvent.currentTarget); > var targetItemIndex:int = dropTarget.calculateDropIndex( dragEvent ); > var item:Object = dropTarget.getItemAtIndex( targetItemIndex ); > > //This logic is wrong as it should be dropTarget.dropEnabled = (item is > CustomClass && !CustomClass(item).isDropDisabled). > //But with the right logic every node that drop is enabled for shows the > 'red x' and drops are rejected and the one that is disabled accepts drops > dropTarget.dropEnabled = (item is CustomClass && > CustomClass(item).isDropDisabled); > > DragManager.showFeedback( DragManager.NONE ); > > ****End Drag Over logic.***** > > While debugging I can confirm that my item.isDropDisabled is returning the > correct value. So why is it working... One other thing I can confirm is that > it does depend on me updating the DragManager.showFeedback as if I omit that > call the indicator does not show the 'red x' and reject the drop. > > Does anyone know why this is working or how I should do it properly? > > Any help much appreciated. > > Greg > > > > > -- Thanks & Regards Niranjan Puduru +91 9000539791
