LSD,
Скажи пожалуста чего в этом коде не так... апплет запускаеться, но ничего не выводит...
| Код |
import java.awt.Component;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Iterator;
import java.util.Set;
import java.util.TreeSet;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JApplet;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.JComboBox;
import edu.uci.ics.jung.algorithms.shortestpath.DijkstraShortestPath;
import edu.uci.ics.jung.graph.Edge;
import edu.uci.ics.jung.graph.Graph;
import edu.uci.ics.jung.graph.Vertex;
import edu.uci.ics.jung.graph.decorators.StringLabeller;
import edu.uci.ics.jung.graph.decorators.StringLabeller.UniqueLabelException;
import edu.uci.ics.jung.graph.impl.DirectedSparseGraph;
import edu.uci.ics.jung.random.generators.EppsteinPowerLawGenerator;
import edu.uci.ics.jung.visualization.FRLayout;
import edu.uci.ics.jung.visualization.PluggableRenderer;
import edu.uci.ics.jung.visualization.ShapePickSupport;
import edu.uci.ics.jung.visualization.VisualizationViewer;
import edu.uci.ics.jung.visualization.control.DefaultModalGraphMouse;
import edu.uci.ics.jung.visualization.control.ModalGraphMouse;
public class kurs extends JApplet implements ActionListener {
/**
*
*/
private static final long serialVersionUID = 1L;
protected static Graph g;
protected static Vertex[] v;
protected static Edge[] e;
protected static StringLabeller slc;
protected static VisualizationViewer vv;
protected static PluggableRenderer pr;
static Vertex mFrom;
static Vertex mTo;
protected static int dist;
protected static String list;
public static Graph Ggraph() {
g = new DirectedSparseGraph();
v = new Vertex[26];
e = new Edge[50];
g = (Graph) new EppsteinPowerLawGenerator(26, 50, 50).generateGraph();
StringLabeller sl = StringLabeller.getLabeller(g);
int c = 0;
for (Iterator iter = g.getVertices().iterator(); iter.hasNext();) {
Vertex v = (Vertex) iter.next();
try {
sl.setLabel(v, "" + c);
} catch (UniqueLabelException e) {
}
c++;
}
return g;
}
private static JPanel setUpControls() {
JPanel jp = new JPanel();
jp.setBackground(Color.WHITE);
jp.setLayout(new BoxLayout(jp, BoxLayout.PAGE_AXIS));
jp.setBorder(BorderFactory.createLineBorder(Color.black, 3));
JPanel jp2 = new JPanel();
jp2.add(new JLabel("Введите количество итераций:", SwingConstants.LEFT));
jp2.add(getSelectionBox(true));
jp2.setBackground(Color.white);
jp.add(jp2);
return jp2;
}
private static Component getSelectionBox(final boolean from) {
StringLabeller sl = StringLabeller.getLabeller(g);
Set<String> s = new TreeSet<String>();
for (Iterator iter = g.getVertices().iterator(); iter.hasNext();) {
s.add(sl.getLabel((Vertex) iter.next()));
}
final JComboBox choices = new JComboBox(s.toArray());
choices.setSelectedIndex(-1);
choices.setBackground(Color.WHITE);
choices.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
StringLabeller sl = StringLabeller.getLabeller(g);
Vertex v = sl.getVertex((String) choices.getSelectedItem());
if (from) {
mFrom = v;
} else {
mTo = v;
}
drawShortest();
}
});
return choices;
}
protected static void drawShortest() {
if (mFrom == null || mTo == null) {
return;
}
DijkstraShortestPath dsp = new DijkstraShortestPath(g);
try {
Number n = dsp.getDistance(mFrom, mTo);
dist = n.intValue();
} catch (IllegalArgumentException iae) {
}
try {
list = dsp.getPath(mFrom, mTo).toString();
} catch (IllegalArgumentException iae) {
}
}
@SuppressWarnings("deprecation")
public static void main(String[] args) {
Ggraph();
FRLayout l = new FRLayout(g);
PluggableRenderer r = new PluggableRenderer();
vv = new VisualizationViewer(l, r);
vv.setPickSupport(new ShapePickSupport());
vv.setBackground(Color.WHITE);
vv.setForeground(Color.darkGray);
ModalGraphMouse gm = new DefaultModalGraphMouse();
vv.setGraphMouse(gm);
JFrame jf = new JFrame();
jf.getContentPane().add(vv, BorderLayout.CENTER);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.getContentPane().add(setUpControls(), BorderLayout.SOUTH);
jf.pack();
jf.show();
}
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
}
}
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