com.alkacon.geranium.client.dnd

Interface I_DNDController

public interface I_DNDController

Drag and drop controller.

Implement and assign to the DNDHandler to control the drag process as well as the underlying model.

Method Summary

Methods

Modifier and Type	Method and Description
void	onAnimationStart(I_Draggable draggable, I_DropTarget target, DNDHandler handler) Executed when end animation starts.
boolean	onBeforeDrop(I_Draggable draggable, I_DropTarget target, DNDHandler handler) Executed before drop.
void	onDragCancel(I_Draggable draggable, I_DropTarget target, DNDHandler handler) Executed on drag cancel.
boolean	onDragStart(I_Draggable draggable, I_DropTarget target, DNDHandler handler) Executed on drag start.
void	onDrop(I_Draggable draggable, I_DropTarget target, DNDHandler handler) Executed on drop.
void	onPositionedPlaceholder(I_Draggable draggable, I_DropTarget target, DNDHandler handler) Executed after the placeholder has been positioned inside a drop target.
boolean	onTargetEnter(I_Draggable draggable, I_DropTarget target, DNDHandler handler) Executed when the helper is dragged into a drop target.
void	onTargetLeave(I_Draggable draggable, I_DropTarget target, DNDHandler handler) Executed when the helper is dragged out of a drop target.

Method Detail

onAnimationStart

void onAnimationStart(I_Draggable draggable,
                    I_DropTarget target,
                    DNDHandler handler)

Executed when end animation starts.

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

onBeforeDrop

boolean onBeforeDrop(I_Draggable draggable,
                   I_DropTarget target,
                   DNDHandler handler)

Executed before drop.

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

Returns:

false to cancel dropping

onDragCancel

void onDragCancel(I_Draggable draggable,
                I_DropTarget target,
                DNDHandler handler)

Executed on drag cancel.

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

onDragStart

boolean onDragStart(I_Draggable draggable,
                  I_DropTarget target,
                  DNDHandler handler)

Executed on drag start.

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

Returns:

false to cancel dragging

onDrop

void onDrop(I_Draggable draggable,
          I_DropTarget target,
          DNDHandler handler)

Executed on drop.

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

onPositionedPlaceholder

void onPositionedPlaceholder(I_Draggable draggable,
                           I_DropTarget target,
                           DNDHandler handler)

Executed after the placeholder has been positioned inside a drop target.

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

onTargetEnter

boolean onTargetEnter(I_Draggable draggable,
                    I_DropTarget target,
                    DNDHandler handler)

Executed when the helper is dragged into a drop target.

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

Returns:

false to cancel entering target (placeholder will not positioned inside target)

onTargetLeave

void onTargetLeave(I_Draggable draggable,
                 I_DropTarget target,
                 DNDHandler handler)

Executed when the helper is dragged out of a drop target.

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance