/**
* The constructor creates the NodeTable and DirectedGraph taken the information from files
* lines-gbg.txt and stops-gbg.txt and makes itself visible.
*/
public ShortRoute(String file) {
// try to convert to UTF-8 across plattforms to make Swedish chars work
// System.out.println("charset = " + java.nio.charset.Charset.defaultCharset());
// MacRoman macintosh Windows-1252 ISO 8859-1 UTF-8
try {
// convert whatever this file is encoded in to UTF-8,
// kill the exception (can't happen)
introText =
new String(
introText.getBytes(java.nio.charset.Charset.defaultCharset().toString()), "UTF-8");
felTextStart =
new String(
felTextStart.getBytes(java.nio.charset.Charset.defaultCharset().toString()), "UTF-8");
felTextSlut =
new String(
felTextSlut.getBytes(java.nio.charset.Charset.defaultCharset().toString()), "UTF-8");
frome =
new String(frome.getBytes(java.nio.charset.Charset.defaultCharset().toString()), "UTF-8");
} catch (UnsupportedEncodingException e) {
System.exit(0);
}
// read the graph and draw it in a separate window
// creates the graph and fills the p-queue "names"
karta.setLocation(50, 250);
if (file == null) {
readAndDrawGraph();
} else {
readAndDrawBIGGraph(file);
}
System.out.println("Version with sorting fixed"); // debug
// now to the graphics in the Frame
// Left part
// select is a panel for structuring the left part
// i.e label, textfield for "from", label, textfield for "to"
JPanel select = new JPanel(new GridLayout(4, 1));
select.setBackground(Color.yellow);
select.add(new JLabel("Ange startpunkt !", JLabel.CENTER));
select.add(from);
select.add(new JLabel("Ange slutpunkt !", JLabel.CENTER));
select.add(to);
from.setBackground(Color.white);
from.setForeground(Color.blue);
to.setBackground(Color.white);
to.setForeground(Color.blue);
from.addActionListener(this);
to.addActionListener(this);
// Middle part
// route is the middle text area part where messages are displayed
// give the middle text area a scrollbar to the right
route = new JTextArea(introText, 12, 40);
route.setEditable(false);
JScrollPane routeScrollPane = new JScrollPane(route);
routeScrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
route.setBackground(Color.white);
route.setForeground(Color.blue);
// Rigth part
JLabel head = new JLabel(" **** Alternativ ***** ");
head.setForeground(Color.red);
// add all stations to the right scrollpane
// tanken är att dom skall vara valbara men det fungerar inte än
// En JList vill ha en ListModel som parameter
// En ListModel är ett interface som implementeras av klassen AbstractListModel
// DefaultListModel ärver AbstractListModel
DefaultListModel<String> valList = new DefaultListModel<String>();
JList<String> alternativ = new JList<String>(valList);
alternativ.setBackground(Color.white);
alternativ.setForeground(Color.blue);
// add a scroll pane to the station list in alternativ
stationList = new JScrollPane(alternativ);
// read names from p-queue and load them into the list
while (!names.isEmpty()) valList.addElement(names.poll());
// panel for structure
JPanel valPanel = new JPanel(new BorderLayout());
valPanel.setBackground(Color.white);
valPanel.add(head, "North");
valPanel.add(stationList, "Center");
// put it all together in the frame
add(select, "West");
add(routeScrollPane, "Center");
add(valPanel, "East");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pack();
setVisible(true);
} // end ShortRoute
/**
* Opens a BufferedReader.
*
* @return the reader
*/
public BufferedReader openReader() {
java.nio.charset.Charset charset = java.nio.charset.Charset.forName(encoding);
InputStream stream = openInputStream();
if (stream == null) return null;
return new BufferedReader(new InputStreamReader(stream, charset));
}
