public class VerticalPanelDropController extends AbstractInsertPanelDropController
DropController
for instances of VerticalPanel
.
TODO VerticalPanel performance is slow because of positioner DOM manipulationdropTarget
Constructor and Description |
---|
VerticalPanelDropController(com.google.gwt.user.client.ui.VerticalPanel dropTarget)
Construct an
VerticalPanelDropController . |
Modifier and Type | Method and Description |
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protected LocationWidgetComparator |
getLocationWidgetComparator()
Required implementation method which provides the desired comparator strategy.
|
protected com.google.gwt.user.client.ui.Widget |
newPositioner(DragContext context)
Called by
AbstractInsertPanelDropController.onEnter(DragContext) to create a new
positioner widget for this InsertPanel drop target. |
onDrop, onEnter, onLeave, onMove, onPreviewDrop
getDropTarget
public VerticalPanelDropController(com.google.gwt.user.client.ui.VerticalPanel dropTarget)
VerticalPanelDropController
.dropTarget
- the VerticalPanel
drop targetprotected LocationWidgetComparator getLocationWidgetComparator()
AbstractInsertPanelDropController
getLocationWidgetComparator
in class AbstractInsertPanelDropController
protected com.google.gwt.user.client.ui.Widget newPositioner(DragContext context)
AbstractInsertPanelDropController
AbstractInsertPanelDropController.onEnter(DragContext)
to create a new
positioner widget for this InsertPanel
drop target. Override this method to customize
the look and feel of
your positioner. The positioner widget may not have any CSS borders or margins, although there
are no such restrictions on the children of the positioner widget. If borders and/or margins
are desired, wrap that widget in a SimplePanel
with a
0px
border and margin.newPositioner
in class AbstractInsertPanelDropController
context
- The current drag context.