org.openmicroscopy.shoola.agents.metadata.editor.UserDiskSpace.java Source code

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Here is the source code for org.openmicroscopy.shoola.agents.metadata.editor.UserDiskSpace.java

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/*
 * org.openmicroscopy.shoola.agents.metadata.editor.UserDiskSpace 
 *
 *------------------------------------------------------------------------------
 *  Copyright (C) 2006-2008 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.metadata.editor;

//Java imports
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

//Third-party libraries
import org.jdesktop.swingx.JXBusyLabel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot3D;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.util.Rotation;

//Application-internal dependencies
import org.openmicroscopy.shoola.env.data.model.DiskQuota;
import org.openmicroscopy.shoola.util.ui.UIUtilities;

/** 
 * Builds a graph with the used and free space.
 *
 * @author  Jean-Marie Burel     
 * <a href="mailto:j.burel@dundee.ac.uk">j.burel@dundee.ac.uk</a>
 * @author Donald MacDonald &nbsp;&nbsp;&nbsp;&nbsp;
 * <a href="mailto:donald@lifesci.dundee.ac.uk">donald@lifesci.dundee.ac.uk</a>
 * @version 3.0
 * <small>
 * (<b>Internal version:</b> $Revision: $Date: $)
 * </small>
 * @since OME3.0
 */
class UserDiskSpace extends JScrollPane {

    /** Reference to the view. */
    private UserUI view;

    /** The component hosting the data. */
    private JPanel data;

    /** Builds UI so the chart is not displayed.*/
    private void buildChartNotAvailable() {
        JLabel l = UIUtilities.setTextFont("Unable to create chart");
        data.add(UIUtilities.buildComponentPanelCenter(l), BorderLayout.CENTER);
    }

    /**
     * Creates a new instance.
     * 
     * @param view Reference to the view. Mustn't be <code>null</code>.
     */
    UserDiskSpace(UserUI view) {
        this.view = view;
        data = new JPanel();
        data.setLayout(new BorderLayout());
        data.setPreferredSize(new Dimension(280, 270));
        data.setBackground(UIUtilities.BACKGROUND_COLOR);
        setPreferredSize(new Dimension(300, 270));
        getViewport().add(data);
    }

    /** Builds and lays out the GUI. */
    void buildGUI() {
        data.removeAll();
        DiskQuota quota = view.isDiskSpaceLoaded();
        if (quota != null) {
            DefaultPieDataset dataset = new DefaultPieDataset();
            long free = quota.getAvailableSpace();
            long used = quota.getUsedSpace();
            if (free < 0 || used < 0) {
                buildChartNotAvailable();
                return;
            }
            dataset.setValue("Free " + UIUtilities.formatFileSize(free), free);
            dataset.setValue("Used " + UIUtilities.formatFileSize(used), used);
            try {
                JFreeChart chart = ChartFactory.createPieChart3D("", dataset, false, true, false);
                PiePlot3D plot = (PiePlot3D) chart.getPlot();
                plot.setDirection(Rotation.CLOCKWISE);
                plot.setForegroundAlpha(0.55f);
                data.add(new ChartPanel(chart), BorderLayout.CENTER);
            } catch (Exception e) {
                buildChartNotAvailable();
            }

        } else {
            JXBusyLabel busyLabel = new JXBusyLabel();
            busyLabel.setBackground(UIUtilities.BACKGROUND_COLOR);
            busyLabel.setEnabled(true);
            busyLabel.setBusy(true);
            JPanel p = UIUtilities.buildComponentPanelCenter(busyLabel);
            p.setBackground(UIUtilities.BACKGROUND_COLOR);
            data.add(p, BorderLayout.CENTER);
        }
        revalidate();
        repaint();
    }

    /** Clears data. */
    void clearDisplay() {
        data.removeAll();
    }

}