/*
Copyright 2008-2010 Gephi
Authors : Yi Du <duyi001@gmail.com>
Website : http://www.gephi.org
This file is part of Gephi.
Gephi is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
Gephi 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with Gephi. If not, see <http://www.gnu.org/licenses/>.
*/
package org.gephi.desktop.spigot;
import java.awt.Component;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.openide.WizardDescriptor;
import org.openide.WizardValidationException;
import org.openide.util.HelpCtx;
public class SpigotWizardPanel1 implements WizardDescriptor.ValidatingPanel {
/**
* The visual component that displays this panel. If you need to access the
* component from this class, just use getComponent().
*/
private Component component;
// Get the visual component for the panel. In this template, the component
// is kept separate. This can be more efficient: if the wizard is created
// but never displayed, or not all panels are displayed, it is better to
// create only those which really need to be visible.
public Component getComponent() {
if (component == null) {
component = new SpigotVisualPanel1();
this.addChangeListener((ChangeListener) component);
}
return component;
}
public HelpCtx getHelp() {
// Show no Help button for this panel:
return HelpCtx.DEFAULT_HELP;
// If you have context help:
// return new HelpCtx(SampleWizardPanel1.class);
}
public boolean isValid() {
SpigotVisualPanel1 panel = (SpigotVisualPanel1) getComponent();
if (panel.emptyList()) {
return false;
}
// If it is always OK to press Next or Finish, then:
return true;
// If it depends on some condition (form filled out...), then:
// return someCondition();
// and when this condition changes (last form field filled in...) then:
// fireChangeEvent();
// and uncomment the complicated stuff below.
}
// public final void addChangeListener(ChangeListener l) {
// }
//
// public final void removeChangeListener(ChangeListener l) {
// }
private final Set<ChangeListener> listeners = new HashSet<ChangeListener>(1); // or can use ChangeSupport in NB 6.0
public final void addChangeListener(ChangeListener l) {
synchronized (listeners) {
listeners.add(l);
}
}
public final void removeChangeListener(ChangeListener l) {
synchronized (listeners) {
listeners.remove(l);
}
}
protected final void fireChangeEvent() {
Iterator<ChangeListener> it;
synchronized (listeners) {
it = new HashSet<ChangeListener>(listeners).iterator();
}
ChangeEvent ev = new ChangeEvent(this);
while (it.hasNext()) {
it.next().stateChanged(ev);
}
}
// You can use a settings object to keep track of state. Normally the
// settings object will be the WizardDescriptor, so you can use
// WizardDescriptor.getProperty & putProperty to store information entered
// by the user.
public void readSettings(Object settings) {
}
public void storeSettings(Object settings) {
}
public void validate() throws WizardValidationException {
if (!isValid()) {
throw new WizardValidationException(null, "Can't be empty.", null);
}
}
}