/*
* AChart2DAction, base for actions to trigger on charts.
* Copyright (C) 2007 - 2011 Achim Westermann, created on 10.12.2004, 13:48:55
*
* 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 library 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.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* If you modify or optimize the code in a useful way please let me know.
* Achim.Westermann@gmx.de
*
*/
package info.monitorenter.gui.chart.events;
import info.monitorenter.gui.chart.Chart2D;
import info.monitorenter.gui.chart.IAxis;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
/**
* The base class that connects triggered actions with an
* {@link info.monitorenter.gui.chart.axis.AAxis} instance.
* <p>
* Every subclass may access it's constructor-given <code>Axis</code> instance
* as protected member <code>m_axis</code>.
* <p>
* Note that this action only works for the first bottom x axis / first left y
* axis: Additional axes cannot be handled by now.
* <p>
*
* @author <a href="mailto:Achim.Westermann@gmx.de">Achim Westermann </a>
*
* @version $Revision: 1.11 $
*
*/
public abstract class AAxisAction extends AChart2DAction implements PropertyChangeListener {
/** Generated <code>serialVersionUID</code>. **/
private static final long serialVersionUID = 2602716712958711393L;
/** The target of this action. */
private int m_axis;
/**
* Create an <code>Action</code> that accesses the chart's axis by argument
* <code>axis</code> and identifies itself with the given action String.
* <p>
*
* @param chart
* the owner of the axis to trigger actions upon.
*
* @param axis
* needed to identify the axis of the chart: one of {@link Chart2D#X}
* , {@link Chart2D#Y}.
*
* @param description
* the descriptive <code>String</code> that will be displayed by
* {@link javax.swing.AbstractButton} subclasses that get this
* <code>Action</code> assigned (
* {@link javax.swing.AbstractButton#setAction(javax.swing.Action)}).
*
*/
public AAxisAction(final Chart2D chart, final String description, final int axis) {
super(chart, description);
this.m_axis = axis;
IAxis<?> myAxis = this.getAxis();
if (this.m_axis == Chart2D.X) {
myAxis.addPropertyChangeListener(Chart2D.PROPERTY_AXIS_X_BOTTOM_REPLACE, this);
} else if (this.m_axis == Chart2D.Y) {
myAxis.addPropertyChangeListener(Chart2D.PROPERTY_AXIS_Y_LEFT_REPLACE, this);
}
}
/**
* Returns the axis that is controlled.
* <p>
* Note that several calls may return different instances (
* <code>a.getAxis() == a.getAxis()</code> may be false) in case the
* corresponding chart of the former axis gets a new axis assigned.
* <p>
* Note that this action only works for the first x axis / first y axis:
* Additional axes cannot be handled by now.
* <p>
*
* @return the axis that is controlled.
*/
protected IAxis<?> getAxis() {
// update in case the corresponding chart has a new axis:
IAxis<?> axis = null;
switch (this.m_axis) {
case Chart2D.X:
axis = this.m_chart.getAxisX();
break;
case Chart2D.Y:
axis = this.m_chart.getAxisY();
break;
default:
break;
}
return axis;
}
/**
* @see java.beans.PropertyChangeListener#propertyChange(java.beans.PropertyChangeEvent)
*/
public void propertyChange(PropertyChangeEvent evt) {
String property = evt.getPropertyName();
if (((property.equals(Chart2D.PROPERTY_AXIS_X_BOTTOM_REPLACE)) && (this.m_axis == Chart2D.X))
|| (property.equals(Chart2D.PROPERTY_AXIS_Y_LEFT_REPLACE) && this.m_axis == Chart2D.Y)) {
IAxis<?> oldAxis = (IAxis<?>) evt.getOldValue();
IAxis<?> newAxis = (IAxis<?>) evt.getNewValue();
if (property.equals(Chart2D.PROPERTY_AXIS_X_BOTTOM_REPLACE)) {
oldAxis.removePropertyChangeListener(Chart2D.PROPERTY_AXIS_X_BOTTOM_REPLACE, this);
newAxis.addPropertyChangeListener(Chart2D.PROPERTY_AXIS_X_BOTTOM_REPLACE, this);
} else if (property.equals(Chart2D.PROPERTY_AXIS_Y_LEFT_REPLACE)) {
oldAxis.removePropertyChangeListener(Chart2D.PROPERTY_AXIS_Y_LEFT_REPLACE, this);
newAxis.addPropertyChangeListener(Chart2D.PROPERTY_AXIS_Y_LEFT_REPLACE, this);
}
}
}
}