| /**
|
| * Copyright (c) 2016, 2019 Mia-Software and others.
|
| * All rights reserved. This program and the accompanying materials
|
| * are made available under the terms of the Eclipse Public License v2.0
|
| * which accompanies this distribution, and is available at
|
| * http://www.eclipse.org/legal/epl-v20.html
|
| *
|
| * Contributors:
|
| * Grégoire Dupé (Mia-Software) - Bug 506318 - [New Browser] Drag and drop support
|
| */ |
| package org.eclipse.modisco.infra.browser.editor.ui.internal.editor;
|
|
|
| import org.eclipse.emf.edit.ui.dnd.LocalTransfer;
|
| import org.eclipse.jface.viewers.ISelection;
|
| import org.eclipse.jface.viewers.TreeViewer;
|
| import org.eclipse.modisco.facet.custom.ui.CustomizedContentProviderUtils;
|
| import org.eclipse.swt.dnd.DragSourceEvent;
|
| import org.eclipse.swt.dnd.DragSourceListener;
|
|
|
| public class TreeEditorDragListener implements DragSourceListener {
|
|
|
| private ISelection selection;
|
| private final TreeViewer tree;
|
|
|
| public TreeEditorDragListener(final TreeViewer tree) {
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| this.tree = tree;
|
| }
|
|
|
| public void dragStart(final DragSourceEvent event) {
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| final ISelection treeSelection = this.tree.getSelection();
|
| this.selection = CustomizedContentProviderUtils
|
| .resolveSelection(treeSelection);
|
| }
|
|
|
| public void dragSetData(final DragSourceEvent event) {
|
| if (LocalTransfer.getInstance().isSupportedType(event.dataType)) {
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| event.data = this.selection;
|
| }
|
| }
|
|
|
| @SuppressWarnings("PMD.NullAssignment")
|
| /*
|
| * @SuppressWarnings("PMD.NullAssignment"): gdupe> This is the way to
|
| * implement a DragSourceListener, cf.
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| * org.eclipse.emf.edit.ui.dnd.ViewerDragAdapter
|
| */
|
| public void dragFinished(final DragSourceEvent event) {
|
| this.selection = null;
|
| }
|
| }
|
