Hey friends I am confuse where to start from.I want to build a custom Horizotal List.In this component I want to drag from a TileList showing images and drop it on Horizontal List and also I want to drag a list of items from a List and drop onto the HorizontalList(HList). Now I also want to control when the drag is from a TileList the application should not allow drag it again from the TileList.
The thing is I am trying to make a simple Formula Builder like c=a+b I have a List of showing a,b,c,d.... I have a TileList showing +,-,*,/... I have a HList where i will be dropping the fields from List and TileList. For eg. If user has dropped c then = sign then a then + so he cannot drop any other operator after that like-,*,/..First he have to remove that operator + sign and then only he can add other operators.How can i achieve that..I know i have to write a custom item renderer.But i dont know where to start from..
