be.ac.ua.comp.scarletnebula.gui.AllGraphsPanel.java Source code

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Here is the source code for be.ac.ua.comp.scarletnebula.gui.AllGraphsPanel.java

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/*
 * Copyright (C) 2011  Ives van der Flaas
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

package be.ac.ua.comp.scarletnebula.gui;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.util.Collection;

import javax.swing.BorderFactory;
import javax.swing.JPanel;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jfree.chart.ChartPanel;

import be.ac.ua.comp.scarletnebula.core.Datapoint;
import be.ac.ua.comp.scarletnebula.core.Server;
import be.ac.ua.comp.scarletnebula.core.ServerStatisticsManager;
import be.ac.ua.comp.scarletnebula.core.ServerStatisticsManager.DeleteDatastreamListener;
import be.ac.ua.comp.scarletnebula.core.ServerStatisticsManager.NewDatastreamListener;

/**
 * Panel that displays all available graphs for some server.
 * 
 * @author ives
 * 
 */
public class AllGraphsPanel extends JPanel implements NewDatastreamListener, DeleteDatastreamListener {
    private static final long serialVersionUID = 1L;
    private static final Log LOG = LogFactory.getLog(AllGraphsPanel.class);

    private final Server server;
    private final ServerStatisticsManager statisticsManager;

    /**
     * Constructor.
     * 
     * @param server
     *            The server whose statistics to display.
     */
    public AllGraphsPanel(final Server server) {
        super(new GridBagLayout());
        this.server = server;
        statisticsManager = server.getServerStatistics();
        statisticsManager.addNewDatastreamListener(this);
        statisticsManager.addDeleteDatastreamListener(this);

        setOpaque(true);
        setBackground(Color.WHITE);
        setBorder(BorderFactory.createEtchedBorder());

        placeComponents();

    }

    /**
     * Places all components (graphs) in the panel.
     */
    private void placeComponents() {
        final GridBagConstraints constraints = new GridBagConstraints();

        int numberOfComponentsPlaced = 0;
        int currXPos = 0;
        final int graphHeight = 150;
        final int graphWidth = 100;

        final Collection<String> datastreams = statisticsManager.getAvailableDatastreams();
        for (final String streamname : datastreams) {
            LOG.info("drawing stream");
            constraints.fill = GridBagConstraints.HORIZONTAL;
            constraints.weightx = 0.5;
            constraints.gridx = currXPos;
            constraints.gridy = numberOfComponentsPlaced / 2;
            constraints.insets = new Insets(10, 0, 0, 0);

            final DecoratedGraph graph = new DecoratedGraph((long) 10 * 60 * 1000,
                    statisticsManager.getDatastream(streamname));
            graph.registerRelativeDatastream(server, streamname, Color.GREEN);
            graph.addServerToRefresh(server);
            final ChartPanel chartPanel = graph.getChartPanel();
            chartPanel.setPreferredSize(new Dimension(graphWidth, graphHeight));
            add(chartPanel, constraints);

            if (currXPos == 0) {
                currXPos = 1;
            } else {
                currXPos = 0;
            }
            numberOfComponentsPlaced++;
        }
    }

    @Override
    public void newDataStream(final Datapoint datapoint) {
        resetPanel();
    }

    /**
     * Removes and redisplays all graphs.
     */
    private void resetPanel() {
        removeAll();
        placeComponents();
        revalidate();
    }

    @Override
    public void deleteDataStream(final String streamname) {
        resetPanel();
    }

}