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- /*
- @VaadinApache2LicenseForJavaFiles@
- */
- package com.vaadin.terminal.gwt.client.ui.dd;
-
- import com.vaadin.terminal.gwt.client.ApplicationConnection;
- import com.vaadin.terminal.gwt.client.ComponentConnector;
-
- /**
- * Vaadin Widgets that want to receive something via drag and drop implement
- * this interface.
- */
- public interface VDropHandler {
-
- /**
- * Called by DragAndDropManager when a drag operation is in progress and the
- * cursor enters the area occupied by this Paintable.
- *
- * @param dragEvent
- * DragEvent which contains the transferable and other
- * information for the operation
- */
- public void dragEnter(VDragEvent dragEvent);
-
- /**
- * Called by DragAndDropManager when a drag operation is in progress and the
- * cursor leaves the area occupied by this Paintable.
- *
- * @param dragEvent
- * DragEvent which contains the transferable and other
- * information for the operation
- */
- public void dragLeave(VDragEvent dragEvent);
-
- /**
- * Called by DragAndDropManager when a drag operation was in progress and a
- * drop was performed on this Paintable.
- *
- *
- * @param dragEvent
- * DragEvent which contains the transferable and other
- * information for the operation
- *
- * @return true if the Tranferrable of this drag event needs to be sent to
- * the server, false if drop is rejected or no server side event
- * should be sent
- */
- public boolean drop(VDragEvent drag);
-
- /**
- * When drag is over current drag handler.
- *
- * With drag implementation by {@link VDragAndDropManager} will be called
- * when mouse is moved. HTML5 implementations call this continuously even
- * though mouse is not moved.
- *
- * @param currentDrag
- */
- public void dragOver(VDragEvent currentDrag);
-
- /**
- * Returns the ComponentConnector with which this DropHandler is associated
- */
- public ComponentConnector getConnector();
-
- /**
- * Returns the application connection to which this {@link VDropHandler}
- * belongs to. DragAndDropManager uses this fucction to send Transferable to
- * server side.
- */
- public ApplicationConnection getApplicationConnection();
-
- }
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