Safe Haskell	None
Language	Haskell98

Graphics.UI.Threepenny.DragNDrop

Contents

Synopsis
Documentation

Synopsis

API for handling drag and drop operations.

See the documentation below for details on the drag and drop model.

WARNING: Events in this module may not behave as expected. The model is currently implemented in terms of HTML 5 drag and drop, but unfortunately, the HTML 5 specification for drag and drop is horrible and browser implementations are buggy.

Documentation

draggable :: WriteAttr Element Bool Source

Enable or disable whether the element can be dragged by the user.

An element with draggable set to True will receive drag, dragStart and dragEnd events.

droppable :: WriteAttr Element Bool Source

Enable or disable whether the element accepts drops.

An element with droppable set to True will receive drop, dragOver, dragEnter and dragLeave events.

Child elements of a droppable element may also be droppable. When dragging something over an element, the closest ancestor element that is droppable will be the target and receive corresponding events.

dragData :: WriteAttr Element DragData Source

Set the data that is transferred when dragging this element.

type DragData = String Source

Data carried by a dragged element.

FIXME: Empty data is currently encoded by the empty String. Change this to 'Maybe String' instead.

drag :: Element -> Event DragData Source

Occurs periodically while the element is being dragged around.

dragStart :: Element -> Event DragData Source

Dragging the element starts.

dragEnd :: Element -> Event DragData Source

Dragging the element ends.

WARNING: This event can occur both before and after a corresponding drop event.