java.lang.Object
- com.badlogic.gdx.scenes.scene2d.utils.DragAndDrop

```
public class DragAndDrop
extends java.lang.Object
```
Manages drag and drop operations through registered drag sources and drop targets.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`DragAndDrop.Payload`	The payload of a drag and drop operation.
`static class`	`DragAndDrop.Source`	A source where a payload can be dragged from.
`static class`	`DragAndDrop.Target`	A target where a payload can be dropped to.

Constructor Summary

Constructors
Constructor Description

DragAndDrop()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addSource(DragAndDrop.Source source)`
`void`	`addTarget(DragAndDrop.Target target)`
`void`	`cancelTouchFocusExcept(DragAndDrop.Source except)`	Cancels the touch focus for everything except the specified source.
`void`	`clear()`	Removes all targets and sources.
`Actor`	`getDragActor()`	Returns the current drag actor, or null.
`DragAndDrop.Payload`	`getDragPayload()`	Returns the current drag payload, or null.
`DragAndDrop.Source`	`getDragSource()`	Returns the current drag source, or null.
`int`	`getDragTime()`
`boolean`	`isDragging()`
`boolean`	`isDragValid()`	Returns true if a drag is in progress and the `drag time` has elapsed since the drag started.
`void`	`removeSource(DragAndDrop.Source source)`
`void`	`removeTarget(DragAndDrop.Target target)`
`void`	`setButton(int button)`	Sets the button to listen for, all other buttons are ignored.
`void`	`setCancelTouchFocus(boolean cancelTouchFocus)`	When true (default), the `Stage.cancelTouchFocus()` touch focus} is cancelled if `dragStart` returns non-null.
`void`	`setDragActorPosition(float dragActorX, float dragActorY)`
`void`	`setDragTime(int dragMillis)`	Time in milliseconds that a drag must take before a drop will be considered valid.
`void`	`setKeepWithinStage(boolean keepWithinStage)`
`void`	`setTapSquareSize(float halfTapSquareSize)`	Sets the distance a touch must travel before being considered a drag.
`void`	`setTouchOffset(float touchOffsetX, float touchOffsetY)`	Sets an offset in stage coordinates from the touch position which is used to determine the drop location.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DragAndDrop
```
public DragAndDrop()
```
- Method Detail
  - addSource
```
public void addSource(DragAndDrop.Source source)
```
  - removeSource
```
public void removeSource(DragAndDrop.Source source)
```
  - addTarget
```
public void addTarget(DragAndDrop.Target target)
```
  - removeTarget
```
public void removeTarget(DragAndDrop.Target target)
```
  - clear
```
public void clear()
```
    Removes all targets and sources.
  - cancelTouchFocusExcept
```
public void cancelTouchFocusExcept(DragAndDrop.Source except)
```
    Cancels the touch focus for everything except the specified source.
  - setTapSquareSize
```
public void setTapSquareSize(float halfTapSquareSize)
```
    Sets the distance a touch must travel before being considered a drag.
  - setButton
```
public void setButton(int button)
```
    Sets the button to listen for, all other buttons are ignored. Default is Input.Buttons.LEFT. Use -1 for any button.
  - setDragActorPosition
```
public void setDragActorPosition(float dragActorX,
                                 float dragActorY)
```
  - setTouchOffset
```
public void setTouchOffset(float touchOffsetX,
                           float touchOffsetY)
```
    Sets an offset in stage coordinates from the touch position which is used to determine the drop location. Default is 0,0.
  - isDragging
```
public boolean isDragging()
```
  - getDragActor
```
@Null
public Actor getDragActor()
```
    Returns the current drag actor, or null.
  - getDragPayload
```
@Null
public DragAndDrop.Payload getDragPayload()
```
    Returns the current drag payload, or null.
  - getDragSource
```
@Null
public DragAndDrop.Source getDragSource()
```
    Returns the current drag source, or null.
  - setDragTime
```
public void setDragTime(int dragMillis)
```
    Time in milliseconds that a drag must take before a drop will be considered valid. This ignores an accidental drag and drop that was meant to be a click. Default is 250.
  - getDragTime
```
public int getDragTime()
```
  - isDragValid
```
public boolean isDragValid()
```
    Returns true if a drag is in progress and the drag time has elapsed since the drag started.
  - setCancelTouchFocus
```
public void setCancelTouchFocus(boolean cancelTouchFocus)
```
    When true (default), the Stage.cancelTouchFocus() touch focus} is cancelled if dragStart returns non-null. This ensures the DragAndDrop is the only touch focus listener, eg when the source is inside a ScrollPane with flick scroll enabled.
  - setKeepWithinStage
```
public void setKeepWithinStage(boolean keepWithinStage)
```

Class DragAndDrop

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DragAndDrop

Method Detail

addSource

removeSource

addTarget

removeTarget

clear

cancelTouchFocusExcept

setTapSquareSize

setButton

setDragActorPosition

setTouchOffset

isDragging

getDragActor

getDragPayload

getDragSource

setDragTime

getDragTime

isDragValid

setCancelTouchFocus

setKeepWithinStage