End User On Wed, Apr 7, 2010 at 11:58 PM, Niranjan RP <[email protected]> wrote:
> > > 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 > > >
