here is an example how you can cancel the drop; http://butterfliesandbugs.wordpress.com/2007/10/10/cancelling-a-drag-action-in-list-components/
--- In [email protected], Alex Harui <aha...@...> wrote: > > I don't think there is a way to refuse the drop when the dragDrop event > occurs. And especially if you want to pause for input. > > > On 1/18/10 4:19 AM, "txakin" <txa...@...> wrote: > > > > > > > Hi all, > > I have a tree component with an xml file as dataprovider. > I would like to move node from one parent to other one, previously an alert > message. > > 1.- I drag a node > 2.- Before drop this node in new parent node, i want to display an alert > message. > 3.- If the user click YES, i want to move the node to the new parent > 4.- If the user click NO, i want to cancel the drag and drop event. > > Here is my source: > > in the tree component i have the next properties: > > dropEnabled="true" > dragEnabled="true" > dragMoveEnabled="true" > dragDrop="customDragDrop(event)" > allowMultipleSelection="false" > > The customDragDrop(event) function is: > > import mx.events.DragEvent; > import mx.managers.DragManager; > > private var queuedEvent:DragEvent; > > private function customDragDrop(event:DragEvent): void > { > //Get the data from the dragSource > var items:Object = event.dragSource.dataForFormat("treeItems"); > event.stopPropagation(); > queuedEvent = event as DragEvent; > > var messageText:String = "Are you sure you want to move the node " > + items[[email protected]() + "?"; > var titleText:String = "Warning"; > var alert:Alert = Alert.show(messageText, titleText, > Alert.NO | Alert.YES, > this, customDragDropHandler,alertIcon); > } > > private function customDragDropHandler(event:CloseEvent):void{ > if (event.detail == Alert.NO){ > queuedEvent.preventDefault(); > queuedEvent.target.hideDropFeedback(queuedEvent); > DragManager.showFeedback(DragManager.NONE); > } > else { > dispatchEvent(queuedEvent); > } > } > > I don´t know why i can not get my solution, please i need your help. > > Thanks in advance. > > > > > > > -- > Alex Harui > Flex SDK Team > Adobe System, Inc. > http://blogs.adobe.com/aharui >
