DropTargetEffect

This class provides a default drag under effect during a drag and drop. The current implementation does not provide any visual feedback.

The drop target effect has the same API as the <code>DropTargetAdapter</code> so that it can provide custom visual feedback when a <code>DropTargetEvent</code> occurs.

Classes that wish to provide their own drag under effect can extend the <code>DropTargetEffect</code> and override any applicable methods in <code>DropTargetAdapter</code> to display their own drag under effect.

The feedback value is either one of the FEEDBACK constants defined in class <code>DND</code> which is applicable to instances of this class, or it must be built by bitwise OR'ing together (that is, using the <code>int</code> "|" operator) two or more of those <code>DND</code> effect constants. <dl> <dt>Feedback:</dt> <dd>FEEDBACK_EXPAND, FEEDBACK_INSERT_AFTER, FEEDBACK_INSERT_BEFORE, FEEDBACK_NONE, FEEDBACK_SELECT, FEEDBACK_SCROLL</dd> </dl>

@see DropTargetAdapter @see DropTargetEvent @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>

@since 3.3

class DropTargetEffect : DropTargetAdapter {

Control control;

this(Control control);

Control getControl();

Widget getItem(int x, int y);

}

Constructors

this this(Control control): Creates a new <code>DropTargetEffect</code> to handle the drag under effect on the specified <code>Control</code>.

Members

Functions

getControl Control getControl(): Returns the Control which is registered for this DropTargetEffect. This is the control over which the user positions the cursor to drop the data.
getItem Widget getItem(int x, int y): Returns the item at the given x-y coordinate in the receiver or null if no such item exists. The x-y coordinate is in the display relative coordinates.

Inherited Members

From DropTargetAdapter

dragEnter void dragEnter(DropTargetEvent event): This implementation of <code>dragEnter</code> permits the default operation defined in <code>event.detail</code>to be performed on the current data type defined in <code>event.currentDataType</code>. For additional information see <code>DropTargetListener.dragEnter</code>.
dragLeave void dragLeave(DropTargetEvent event): This implementation of <code>dragLeave</code> does nothing. For additional information see <code>DropTargetListener.dragOperationChanged</code>.
dragOperationChanged void dragOperationChanged(DropTargetEvent event): This implementation of <code>dragOperationChanged</code> permits the default operation defined in <code>event.detail</code>to be performed on the current data type defined in <code>event.currentDataType</code>. For additional information see <code>DropTargetListener.dragOperationChanged</code>.
dragOver void dragOver(DropTargetEvent event): This implementation of <code>dragOver</code> permits the default operation defined in <code>event.detail</code>to be performed on the current data type defined in <code>event.currentDataType</code>. For additional information see <code>DropTargetListener.dragOver</code>.
drop void drop(DropTargetEvent event): This implementation of <code>drop</code> does nothing. For additional information see <code>DropTargetListener.drop</code>.
dropAccept void dropAccept(DropTargetEvent event): This implementation of <code>dropAccept</code> permits the default operation defined in <code>event.detail</code>to be performed on the current data type defined in <code>event.currentDataType</code>. For additional information see <code>DropTargetListener.dropAccept</code>.