Package org.opencms.gwt.client.dnd

Class CmsCompositeDNDController

java.lang.Object

org.opencms.gwt.client.dnd.CmsCompositeDNDController

All Implemented Interfaces:

I_CmsDNDController

public class CmsCompositeDNDController
extends Object
implements I_CmsDNDController

A DND controller which forwards method calls to multiple other DND controllers.

Constructor Summary

Constructors

Constructor	Description
CmsCompositeDNDController()

Method Summary

Modifier and Type	Method	Description
com.google.web.bindery.event.shared.HandlerRegistration	addController(I_CmsDNDController controller)	Adds another sub-controller to this controller.
void	onAnimationStart(I_CmsDraggable draggable, I_CmsDropTarget target, CmsDNDHandler handler)	Executed when end animation starts.
boolean	onBeforeDrop(I_CmsDraggable draggable, I_CmsDropTarget target, CmsDNDHandler handler)	Executed before drop.
void	onDragCancel(I_CmsDraggable draggable, I_CmsDropTarget target, CmsDNDHandler handler)	Executed on drag cancel.
boolean	onDragStart(I_CmsDraggable draggable, I_CmsDropTarget target, CmsDNDHandler handler)	Executed on drag start.
void	onDrop(I_CmsDraggable draggable, I_CmsDropTarget target, CmsDNDHandler handler)	Executed on drop.
void	onPositionedPlaceholder(I_CmsDraggable draggable, I_CmsDropTarget target, CmsDNDHandler handler)	Executed after the placeholder has been positioned inside a drop target.
boolean	onTargetEnter(I_CmsDraggable draggable, I_CmsDropTarget target, CmsDNDHandler handler)	Executed when the helper is dragged into a drop target.
void	onTargetLeave(I_CmsDraggable draggable, I_CmsDropTarget target, CmsDNDHandler handler)	Executed when the helper is dragged out of a drop target.
void	postClear(I_CmsDraggable draggable, I_CmsDropTarget target)	Called after the CSS styles are changed back to normal after a DnD operation.
boolean	startPlacementMode(I_CmsDraggable draggable, CmsDNDHandler handler)	Maybe starts placement mode, and returns true if it does so.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CmsCompositeDNDController

public CmsCompositeDNDController()

Method Details

addController

public com.google.web.bindery.event.shared.HandlerRegistration addController(I_CmsDNDController controller)

Adds another sub-controller to this controller.

Parameters:

controller - the controller to add

Returns:

a registration object to remove the controller later

onAnimationStart

public void onAnimationStart(I_CmsDraggable draggable,
 I_CmsDropTarget target,
 CmsDNDHandler handler)

Description copied from interface: I_CmsDNDController

Executed when end animation starts.

Specified by:

onAnimationStart in interface I_CmsDNDController

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

See Also:

• I_CmsDNDController.onAnimationStart(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.I_CmsDropTarget, org.opencms.gwt.client.dnd.CmsDNDHandler)

onBeforeDrop

public boolean onBeforeDrop(I_CmsDraggable draggable,
 I_CmsDropTarget target,
 CmsDNDHandler handler)

Description copied from interface: I_CmsDNDController

Executed before drop.

Specified by:

onBeforeDrop in interface I_CmsDNDController

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

Returns:

false to cancel dropping

See Also:

• I_CmsDNDController.onBeforeDrop(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.I_CmsDropTarget, org.opencms.gwt.client.dnd.CmsDNDHandler)

onDragCancel

public void onDragCancel(I_CmsDraggable draggable,
 I_CmsDropTarget target,
 CmsDNDHandler handler)

Description copied from interface: I_CmsDNDController

Executed on drag cancel.

Specified by:

onDragCancel in interface I_CmsDNDController

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

See Also:

• I_CmsDNDController.onDragCancel(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.I_CmsDropTarget, org.opencms.gwt.client.dnd.CmsDNDHandler)

onDragStart

public boolean onDragStart(I_CmsDraggable draggable,
 I_CmsDropTarget target,
 CmsDNDHandler handler)

Description copied from interface: I_CmsDNDController

Executed on drag start.

Specified by:

onDragStart in interface I_CmsDNDController

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

Returns:

false to cancel dragging

See Also:

• I_CmsDNDController.onDragStart(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.I_CmsDropTarget, org.opencms.gwt.client.dnd.CmsDNDHandler)

onDrop

public void onDrop(I_CmsDraggable draggable,
 I_CmsDropTarget target,
 CmsDNDHandler handler)

Description copied from interface: I_CmsDNDController

Executed on drop.

Specified by:

onDrop in interface I_CmsDNDController

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

See Also:

• I_CmsDNDController.onDrop(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.I_CmsDropTarget, org.opencms.gwt.client.dnd.CmsDNDHandler)

onPositionedPlaceholder

public void onPositionedPlaceholder(I_CmsDraggable draggable,
 I_CmsDropTarget target,
 CmsDNDHandler handler)

Description copied from interface: I_CmsDNDController

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

Specified by:

onPositionedPlaceholder in interface I_CmsDNDController

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

See Also:

• I_CmsDNDController.onPositionedPlaceholder(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.I_CmsDropTarget, org.opencms.gwt.client.dnd.CmsDNDHandler)

onTargetEnter

public boolean onTargetEnter(I_CmsDraggable draggable,
 I_CmsDropTarget target,
 CmsDNDHandler handler)

Description copied from interface: I_CmsDNDController

Executed when the helper is dragged into a drop target.

Specified by:

onTargetEnter in interface I_CmsDNDController

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)

See Also:

• I_CmsDNDController.onTargetEnter(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.I_CmsDropTarget, org.opencms.gwt.client.dnd.CmsDNDHandler)

onTargetLeave

public void onTargetLeave(I_CmsDraggable draggable,
 I_CmsDropTarget target,
 CmsDNDHandler handler)

Description copied from interface: I_CmsDNDController

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

Specified by:

onTargetLeave in interface I_CmsDNDController

Parameters:

draggable - the draggable item

target - the current drop target

handler - the drag and drop handler instance

See Also:

• I_CmsDNDController.onTargetLeave(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.I_CmsDropTarget, org.opencms.gwt.client.dnd.CmsDNDHandler)

postClear

public void postClear(I_CmsDraggable draggable,
 I_CmsDropTarget target)

Description copied from interface: I_CmsDNDController

Called after the CSS styles are changed back to normal after a DnD operation.

Specified by:

postClear in interface I_CmsDNDController

Parameters:

draggable - the draggable

target - the drag target (null if drag cancelled)

See Also:

• I_CmsDNDController.postClear(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.I_CmsDropTarget)

startPlacementMode

public boolean startPlacementMode(I_CmsDraggable draggable,
 CmsDNDHandler handler)

Description copied from interface: I_CmsDNDController

Maybe starts placement mode, and returns true if it does so.

Specified by:

startPlacementMode in interface I_CmsDNDController

Parameters:

draggable - the item for which placement mode should be activated

handler - the DnD handler

Returns:

true if placement mode has been activated

See Also:

• I_CmsDNDController.startPlacementMode(org.opencms.gwt.client.dnd.I_CmsDraggable, org.opencms.gwt.client.dnd.CmsDNDHandler)