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/*
 * Copyright 2003-2004, Franz-Josef Elmer, All rights reserved
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details
 * (http://www.gnu.org/copyleft/lesser.html).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcckit.plot;

/**
 * A plot event signales some changes of a {@link Plot}.
 * It has three attributes:
 * 
  • source: Indicates the Plot instance responsible * for this event. *
  • type: The type of event. *
  • message: The message object. Its meaning depends on the * type of event: * * * * * * * * *
    TypeMeaning of the message object
    {@link PlotEventType#DATA_PLOT_CONNECTED}, * {@link PlotEventType#DATA_PLOT_DISCONNECTED}The {@link jcckit.data.DataPlot} (dis)connected with the * {@link Plot} instance specified by the source.
    {@link PlotEventType#DATA_PLOT_CHANGED}An Integer indicating the lowest index of * those curves which have been changed.
    {@link PlotEventType#DATA_CURVE_CHANGED}An Integer indicating the index of the curve * which has been changed.
    *
* * * @author Franz-Josef Elmer */ public class PlotEvent { private final Plot _source; private final PlotEventType _type; private final Object _message; /** * Creates a new event for the specified source, type, and message. * @param source Plot causing this event. * @param type Type of the event. Possible values are * {@link PlotEventType#DATA_PLOT_CHANGED}, * {@link PlotEventType#DATA_CURVE_CHANGED}, * {@link PlotEventType#DATA_PLOT_CONNECTED}, and * {@link PlotEventType#DATA_PLOT_DISCONNECTED}. * @param message Message object. Can be null */ public PlotEvent(Plot source, PlotEventType type, Object message) { _source = source; _type = type; _message = message; } /** Returns the source of this event. */ public Plot getSource() { return _source; } /** * Returns the event type. * @return either {@link PlotEventType#DATA_PLOT_CHANGED}, * {@link PlotEventType#DATA_CURVE_CHANGED}, * {@link PlotEventType#DATA_PLOT_CONNECTED}, or * {@link PlotEventType#DATA_PLOT_DISCONNECTED}. */ public PlotEventType getType() { return _type; } /** Returns the message object. */ public Object getMessage() { return _message; } }




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