from my MainFrame I create a internal Frame and add that to my desktop pane, but the internal Frame just won't show up. I tried to figure it out for 3 hours now and I kinda need some help with it. Before I implemented the observer pattern it just worked fine. So I thought it got something to do with that and changed some stuff and double checked the crucial code. No solution so far. I just realized how crappy my english is sometimes. Sorry for that!
The 2 code blocks are already shortened. Sorry that they are still pretty long. But I am just not sure where I made the mistake. If you need more code or anything else, just tell me. Thank you very much in advance.
This is the code of my main frame:
public class LangtonsAmeise extends JFrame implements ActionListener {
private JDesktopPane desk;
private JPanel panelButtons;
JMenuBar jmb;
JMenu file,modus;
JMenuItem load,save, exit, mSetzen,mMalen,mLaufen;
JSlider slider;
static int xInt, yInt,xFrame=450,yFrame=450;
static boolean bSetzen = false, bMalen = false, running = false;
Random randomGenerator = new Random();
JLabel xLabel, yLabel, speed, statusText,status;
JButton start, stop, addAnt;
JTextField xField, yField;
public LangtonsAmeise() {
// Desktop
desk = new JDesktopPane();
getContentPane().add(desk, BorderLayout.CENTER);
/* Those 4 lines work just fine. Internal Frame gets displayed.
JInternalFrame j = new JInternalFrame();
desk.add(j);
j.setSize(new Dimension(300,300));
j.setVisible(true);
*/
speed = new JLabel("Geschwindigkeit");
xLabel = new JLabel("x:");
yLabel = new JLabel("y:");
xLabel.setHorizontalAlignment(JLabel.RIGHT);
yLabel.setHorizontalAlignment(JLabel.RIGHT);
xLabel.setOpaque(true);
yLabel.setOpaque(true);
xField = new JTextField();
yField = new JTextField();
xField.setDocument(new IntegerDocument(2));
yField.setDocument(new IntegerDocument(2));
start = new JButton("Fenster erstellen");
stop = new JButton("Stopp");
start.setMargin(new Insets(0, 0, 0, 0));
stop.setMargin(new Insets(0, 0, 0, 0));
// Buttons
panelButtons = new JPanel();
panelButtons.setLayout(new GridLayout());
panelButtons.add(start);
panelButtons.add(xLabel);
panelButtons.add(xField);
panelButtons.add(yLabel);
panelButtons.add(yField);
panelButtons.add(speed);
panelButtons.add(slider);
panelButtons.add(new Panel());
panelButtons.add(stop);
start.addActionListener(this);
stop.addActionListener(this);
add(panelButtons, BorderLayout.NORTH);
statusText = new JLabel("Aktueller Modus:");
status = new JLabel("Stopp");
// JMenuBar
jmb = new JMenuBar();
setJMenuBar(jmb);
file = new JMenu("Datei");
modus = new JMenu("Modus");
mLaufen = new JMenuItem("Laufen");
mMalen = new JMenuItem("Malen");
mSetzen = new JMenuItem("Setzen");
load = new JMenuItem("Simulation laden");
save = new JMenuItem("Simulation speichern");
mSetzen.addActionListener(this);
mMalen.addActionListener(this);
mLaufen.addActionListener(this);
exit = new JMenuItem("Exit");
file.add(save);
file.add(load);
file.addSeparator();
file.add(exit);
save.addActionListener(this);
load.addActionListener(this);
modus.add(mLaufen);
modus.add(mSetzen);
modus.add(mMalen);
jmb.add(file);
jmb.add(modus);
for (int i = 0; i < 20; i++) {
jmb.add(new JLabel(" "));
}
jmb.add(statusText);
jmb.add(status);
setSize(new Dimension(1000, 900));
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
this.setLocation(dim.width / 2 - this.getSize().width / 2, dim.height
/ 2 - this.getSize().height / 2);
xField.setText("5");
yField.setText("5");
setVisible(true);
}
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("Fenster erstellen")) {
if (xField.getText().equals("") || yField.getText().equals("")) {
new popUpWindow(
"Sie müssen eine Zahl zwischen 2 und 99 angeben!!");
} else {
xInt = Integer.parseInt(xField.getText());
yInt = Integer.parseInt(yField.getText());
state s = new state();
kindFenster k = new kindFenster(s, xInt, yInt);
s.addObserver(k);
addChild(k, this.getSize().width, this.getSize().height);
}
}
if (e.getActionCommand().equals("Stopp")) {
running=!running;
status.setText("Stopp");
}
}
public void addChild(JInternalFrame kind, int xPixel, int yPixel) {
// kind.setSize(370, 370);
kind.setLocation(randomGenerator.nextInt(xPixel - kind.getSize().height),
randomGenerator.nextInt(yPixel - kind.getSize().height - 100));
kind.setDefaultCloseOperation(JInternalFrame.DISPOSE_ON_CLOSE);
desk.add(kind);
kind.setVisible(true);
kind.repaint();
kind.validate();
}
public static void main(String[] args) {
LangtonsAmeise hauptFenster = new LangtonsAmeise();
}
}
And this is my Internal Frame:
public class kindFenster extends JInternalFrame implements ActionListener,
Serializable,Observer {
/**
*
*/
private static final long serialVersionUID = 8939449766068226519L;
static int nr = 0;
static int x,y,xScale,yScale,xFrame,yFrame;
static int sleeptime;
state s;
ArrayList<JButton> jbArray = new ArrayList<>();
ArrayList<ImageIcon> ameisen = new ArrayList<ImageIcon>();
public static ArrayList<AmeiseThread> threadList = new ArrayList<>();
Color alteFarbe, neueFarbe;
JButton save, addAnt;
JPanel panelButtonsKind;
JSlider sliderKind;
public JPanel panelSpielfeld;
static SetzenActionListener sal = new SetzenActionListener();
static MouseMotionActionListener mmal = new MouseMotionActionListener();
public kindFenster(state s,int x, int y) {
super("Kind " + (++nr), true, true, true, true);
setLayout(new BorderLayout());
this.s=s;
setSize(new Dimension(xFrame, yFrame));
panelSpielfeld = new JPanel();
panelSpielfeld.setLayout(new GridLayout(y, x));
panelButtonsKind = new JPanel();
panelButtonsKind.setLayout(new GridLayout(1, 3));
save = new JButton("Simulation speichern");
addAnt = new JButton("Ameise hinzufügen");
save.setMargin(new Insets(0, 0, 0, 0));
addAnt.setMargin(new Insets(0, 0, 0, 0));
addAnt.addActionListener(this);
save.addActionListener(this);
sliderKind = new JSlider(JSlider.HORIZONTAL, 1, 10, 5);
sliderKind.setSnapToTicks(true);
sliderKind.setPaintTicks(true);
sliderKind.setPaintTrack(true);
sliderKind.setMajorTickSpacing(1);
sliderKind.setPaintLabels(true);
sliderKind.addChangeListener(new ChangeListener() {
@Override
public void stateChanged(ChangeEvent e) {
if (threadList.size() >= 0) {
for (AmeiseThread t : threadList) {
JSlider source = (JSlider) e.getSource();
if (!source.getValueIsAdjusting()) {
int speed = source.getValue();
sleeptime = 1000 / speed;
}
}
}
}
});
panelButtonsKind.add(save);
panelButtonsKind.add(sliderKind);
panelButtonsKind.add(addAnt);
add(panelButtonsKind, BorderLayout.NORTH);
add(panelSpielfeld, BorderLayout.CENTER);
this.addComponentListener(new MyComponentAdapter());
setVisible(true);
repaint();
validate();
}
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("Ameise hinzufügen")) {
threadList.add(new AmeiseThread(this));
threadList.get(threadList.size() - 1).start();
}
if (e.getActionCommand().equals("Simulation speichern")) {
OutputStream fos = null;
try {
fos = new FileOutputStream("test");
ObjectOutputStream o = new ObjectOutputStream(fos);
o.writeObject(this );
} catch (IOException e1) {
System.err.println(e1);
} finally {
try {
fos.close();
} catch (Exception e1) {
e1.printStackTrace();
}
}
}
}
I think it is because you didn't set size for your JInternalFrame. In your code it is as a comment:
//kind.setSize(370, 370);
when I remove "//" it works for me.