+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2003 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package net.sourceforge.phpdt.internal.ui.dnd;
-
-import org.eclipse.jface.util.Assert;
-import org.eclipse.jface.viewers.ISelection;
-import org.eclipse.jface.viewers.ISelectionProvider;
-import org.eclipse.swt.dnd.DND;
-import org.eclipse.swt.dnd.DragSourceAdapter;
-import org.eclipse.swt.dnd.DragSourceEvent;
-import org.eclipse.swt.dnd.Transfer;
-
-public class BasicSelectionTransferDragAdapter extends DragSourceAdapter implements TransferDragSourceListener {
-
- private ISelectionProvider fProvider;
-
- public BasicSelectionTransferDragAdapter(ISelectionProvider provider) {
- Assert.isNotNull(provider);
- fProvider= provider;
- }
-
- /**
- * @see TransferDragSourceListener#getTransfer
- */
- public Transfer getTransfer() {
- return LocalSelectionTransfer.getInstance();
- }
-
- /* non Java-doc
- * @see org.eclipse.swt.dnd.DragSourceListener#dragStart
- */
- public void dragStart(DragSourceEvent event) {
- ISelection selection= fProvider.getSelection();
- LocalSelectionTransfer.getInstance().setSelection(selection);
- LocalSelectionTransfer.getInstance().setSelectionSetTime(event.time);
- event.doit= isDragable(selection);
- }
-
- /**
- * Checks if the elements contained in the given selection can
- * be dragged.
- * <p>
- * Subclasses may override.
- *
- * @param selection containing the elements to be dragged
- */
- protected boolean isDragable(ISelection selection) {
- return true;
- }
-
-
- /* non Java-doc
- * @see org.eclipse.swt.dnd.DragSourceListener#dragSetData
- */
- public void dragSetData(DragSourceEvent event) {
- // For consistency set the data to the selection even though
- // the selection is provided by the LocalSelectionTransfer
- // to the drop target adapter.
- event.data= LocalSelectionTransfer.getInstance().getSelection();
- }
-
-
- /* non Java-doc
- * @see org.eclipse.swt.dnd.DragSourceListener#dragFinished
- */
- public void dragFinished(DragSourceEvent event) {
- // We assume that the drop target listener has done all
- // the work.
- Assert.isTrue(event.detail == DND.DROP_NONE);
- LocalSelectionTransfer.getInstance().setSelection(null);
- LocalSelectionTransfer.getInstance().setSelectionSetTime(0);
- }
-}