| /******************************************************************************* |
| * Copyright (c) 2004, 2009 Tasktop Technologies and others. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * https://www.eclipse.org/legal/epl-2.0 |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Tasktop Technologies - initial API and implementation |
| * Jevgeni Holodkov - improvements |
| *******************************************************************************/ |
| |
| package org.eclipse.mylyn.internal.tasks.ui.util; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.jface.util.LocalSelectionTransfer; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.mylyn.commons.core.StatusHandler; |
| import org.eclipse.mylyn.internal.tasks.core.ITasksCoreConstants; |
| import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin; |
| import org.eclipse.mylyn.internal.tasks.ui.actions.CopyTaskDetailsAction; |
| import org.eclipse.swt.dnd.DragSourceAdapter; |
| import org.eclipse.swt.dnd.DragSourceEvent; |
| import org.eclipse.swt.dnd.FileTransfer; |
| import org.eclipse.swt.dnd.TextTransfer; |
| |
| /** |
| * @author Mik Kersten |
| * @author Leo Dos Santos |
| * @author Steffen Pingel |
| */ |
| public class TaskDragSourceListener extends DragSourceAdapter { |
| |
| private IStructuredSelection currentSelection; |
| |
| private final ISelectionProvider selectionProvider; |
| |
| public TaskDragSourceListener(ISelectionProvider selectionProvider) { |
| this.selectionProvider = selectionProvider; |
| } |
| |
| @Override |
| public void dragStart(DragSourceEvent event) { |
| ISelection selection = selectionProvider.getSelection(); |
| if (selection instanceof IStructuredSelection && !selection.isEmpty()) { |
| this.currentSelection = (IStructuredSelection) selection; |
| } else { |
| this.currentSelection = null; |
| event.doit = false; |
| } |
| } |
| |
| @Override |
| public void dragSetData(DragSourceEvent event) { |
| if (currentSelection == null || currentSelection.isEmpty()) { |
| return; |
| } |
| |
| if (LocalSelectionTransfer.getTransfer().isSupportedType(event.dataType)) { |
| LocalSelectionTransfer.getTransfer().setSelection(currentSelection); |
| } else if (FileTransfer.getInstance().isSupportedType(event.dataType)) { |
| try { |
| File file = File.createTempFile(ITasksCoreConstants.EXPORT_FILE_NAME, |
| ITasksCoreConstants.FILE_EXTENSION); |
| file.deleteOnExit(); |
| ImportExportUtil.export(file, currentSelection); |
| |
| String[] paths = new String[1]; |
| paths[0] = file.getAbsolutePath(); |
| event.data = paths; |
| } catch (CoreException e) { |
| StatusHandler.log(new Status(IStatus.ERROR, TasksUiPlugin.ID_PLUGIN, |
| "Problems encountered dragging task", //$NON-NLS-1$ |
| e)); |
| } catch (IOException e) { |
| StatusHandler.log(new Status(IStatus.ERROR, TasksUiPlugin.ID_PLUGIN, |
| "Problems encountered dragging task", //$NON-NLS-1$ |
| e)); |
| } |
| } else if (TextTransfer.getInstance().isSupportedType(event.dataType)) { |
| event.data = CopyTaskDetailsAction.getTextForTask(currentSelection.getFirstElement()); |
| } |
| } |
| |
| @Override |
| public void dragFinished(DragSourceEvent event) { |
| if (LocalSelectionTransfer.getTransfer().isSupportedType(event.dataType)) { |
| LocalSelectionTransfer.getTransfer().setSelection(null); |
| } |
| } |
| |
| } |