Java tutorial
/* * org.openmicroscopy.shoola.agents.treeviewer.actions.DownloadAction * *------------------------------------------------------------------------------ * Copyright (C) 2006-2013 University of Dundee. All rights reserved. * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * *------------------------------------------------------------------------------ */ package org.openmicroscopy.shoola.agents.treeviewer.actions; //Java imports import java.awt.event.ActionEvent; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.io.File; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import javax.swing.Action; import javax.swing.JFrame; //Third-party libraries import org.apache.commons.io.FilenameUtils; //Application-internal dependencies import org.openmicroscopy.shoola.agents.treeviewer.IconManager; import org.openmicroscopy.shoola.agents.treeviewer.TreeViewerAgent; import org.openmicroscopy.shoola.agents.treeviewer.browser.Browser; import org.openmicroscopy.shoola.agents.treeviewer.view.TreeViewer; import org.openmicroscopy.shoola.agents.util.browser.TreeImageDisplay; import org.openmicroscopy.shoola.util.ui.UIUtilities; import org.openmicroscopy.shoola.util.ui.filechooser.FileChooser; import pojos.DataObject; import pojos.FileAnnotationData; import pojos.ImageData; /** * Action to download the selected file. * * @author Jean-Marie Burel * <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a> * @author Donald MacDonald * <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a> * @version 3.0 * @since 3.0-Beta4 */ public class DownloadAction extends TreeViewerAction { /** The default name of the action. */ private static final String NAME = "Download..."; /** The description of the action. */ private static final String DESCRIPTION = "Download the selected files."; /** * Sets the action enabled depending on the state of the {@link Browser}. * @see TreeViewerAction#onBrowserStateChange(Browser) */ protected void onBrowserStateChange(Browser browser) { if (browser == null) return; switch (browser.getState()) { case Browser.LOADING_DATA: case Browser.LOADING_LEAVES: setEnabled(false); break; default: onDisplayChange(browser.getLastSelectedDisplay()); break; } } /** * Sets the enabled flag of the action depending on the selected node. * @see TreeViewerAction#onDisplayChange(TreeImageDisplay) */ protected void onDisplayChange(TreeImageDisplay selectedDisplay) { if (selectedDisplay == null) { setEnabled(false); return; } setEnabled(false); Object ho = selectedDisplay.getUserObject(); if (ho instanceof FileAnnotationData) { setEnabled(true); } else if (ho instanceof ImageData) { Browser browser = model.getSelectedBrowser(); List<DataObject> list = browser.getSelectedDataObjects(); Iterator<DataObject> i = list.iterator(); DataObject data; boolean enabled = false; while (i.hasNext()) { data = i.next(); if (data instanceof ImageData) { ImageData img = (ImageData) data; if (img.isArchived()) enabled = true; } } setEnabled(enabled); } } /** * Creates a new instance. * * @param model Reference to the Model. Mustn't be <code>null</code>. */ public DownloadAction(TreeViewer model) { super(model); name = NAME; putValue(Action.SHORT_DESCRIPTION, UIUtilities.formatToolTipText(DESCRIPTION)); description = (String) getValue(Action.SHORT_DESCRIPTION); IconManager im = IconManager.getInstance(); putValue(Action.SMALL_ICON, im.getIcon(IconManager.DOWNLOAD)); } /** * Downloads the selected files. * @see java.awt.event.ActionListener#actionPerformed(ActionEvent) */ public void actionPerformed(ActionEvent e) { Browser browser = model.getSelectedBrowser(); if (browser == null) return; TreeImageDisplay node = browser.getLastSelectedDisplay(); if (node == null) return; JFrame f = TreeViewerAgent.getRegistry().getTaskBar().getFrame(); List<DataObject> list = browser.getSelectedDataObjects(); int type = FileChooser.SAVE; List<String> paths = new ArrayList<String>(); if (list != null && list.size() > 1) { type = FileChooser.FOLDER_CHOOSER; Iterator<DataObject> i = list.iterator(); DataObject data; while (i.hasNext()) { data = i.next(); if (data instanceof ImageData) { paths.add(FilenameUtils.getName(((ImageData) data).getName())); } } } FileChooser chooser = new FileChooser(f, type, FileChooser.DOWNLOAD_TEXT, FileChooser.DOWNLOAD_DESCRIPTION, null, true); try { File file = UIUtilities.getDefaultFolder(); if (file != null) chooser.setCurrentDirectory(file); } catch (Exception ex) { } String text = ""; Object ho = node.getUserObject(); if (ho instanceof ImageData) text = ((ImageData) ho).getName(); else if (ho instanceof FileAnnotationData) text = ((FileAnnotationData) ho).getFileName(); chooser.setSelectedFileFull(text); chooser.setCheckOverride(true); chooser.setSelectedFiles(paths); IconManager icons = IconManager.getInstance(); chooser.setTitleIcon(icons.getIcon(IconManager.DOWNLOAD_48)); chooser.setApproveButtonText(FileChooser.DOWNLOAD_TEXT); chooser.addPropertyChangeListener(new PropertyChangeListener() { public void propertyChange(PropertyChangeEvent evt) { String name = evt.getPropertyName(); FileChooser src = (FileChooser) evt.getSource(); File path = null; if (FileChooser.APPROVE_SELECTION_PROPERTY.equals(name)) { if (src.getChooserType() == FileChooser.FOLDER_CHOOSER) { path = new File((String) evt.getNewValue()); } else { File[] files = (File[]) evt.getNewValue(); if (files == null || files.length == 0) return; path = files[0]; } if (path == null) { path = UIUtilities.getDefaultFolder(); } model.download(path, src.isOverride()); } } }); chooser.centerDialog(); } }