How to add components to JPanel: java, swing, awt

by: 0791882310Posted on 2009-06-16 at 07:53:42ID: 24638642

you dont have to validate or repaint, the code you have to add the button to the panel will work fine, there has to be a problem with the rest of your code somewhere... maybe adding the panel to the frame??.. or displaying the frame??.. can you post the rest of your layout code so we can have a look at it?

by: Stian_BPosted on 2009-06-16 at 07:57:47ID: 24638684

here is the code creating the layout, i'm using netbeans "drag and drop" to create the components that will not change, that is the "venstre_jpanel" and "hoyre_jpanel".

 * KasseView.java
 */
 
package kasse;
 
import java.awt.BorderLayout;
import java.awt.GridLayout;
import org.jdesktop.application.Action;
import org.jdesktop.application.ResourceMap;
import org.jdesktop.application.SingleFrameApplication;
import org.jdesktop.application.FrameView;
import org.jdesktop.application.TaskMonitor;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Timer;
import javax.swing.Icon;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;
 
/**
 * The application's main frame.
 */
public class KasseView extends FrameView {
 
    public KasseView(SingleFrameApplication app) {
        super(app);
 
        initComponents();
        
 
        // status bar initialization - message timeout, idle icon and busy animation, etc
        ResourceMap resourceMap = getResourceMap();
        int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");
        messageTimer = new Timer(messageTimeout, new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                statusMessageLabel.setText("");
            }
        });
        messageTimer.setRepeats(false);
        int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");
        for (int i = 0; i < busyIcons.length; i++) {
            busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i + "]");
        }
        busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                busyIconIndex = (busyIconIndex + 1) % busyIcons.length;
                statusAnimationLabel.setIcon(busyIcons[busyIconIndex]);
            }
        });
        idleIcon = resourceMap.getIcon("StatusBar.idleIcon");
        statusAnimationLabel.setIcon(idleIcon);
        progressBar.setVisible(false);
 
        // connecting action tasks to status bar via TaskMonitor
        TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());
        taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {
            public void propertyChange(java.beans.PropertyChangeEvent evt) {
                String propertyName = evt.getPropertyName();
                if ("started".equals(propertyName)) {
                    if (!busyIconTimer.isRunning()) {
                        statusAnimationLabel.setIcon(busyIcons[0]);
                        busyIconIndex = 0;
                        busyIconTimer.start();
                    }
                    progressBar.setVisible(true);
                    progressBar.setIndeterminate(true);
                } else if ("done".equals(propertyName)) {
                    busyIconTimer.stop();
                    statusAnimationLabel.setIcon(idleIcon);
                    progressBar.setVisible(false);
                    progressBar.setValue(0);
                } else if ("message".equals(propertyName)) {
                    String text = (String)(evt.getNewValue());
                    statusMessageLabel.setText((text == null) ? "" : text);
                    messageTimer.restart();
                } else if ("progress".equals(propertyName)) {
                    int value = (Integer)(evt.getNewValue());
                    progressBar.setVisible(true);
                    progressBar.setIndeterminate(false);
                    progressBar.setValue(value);
                }
            }
        });
    }
 
    @Action
    public void showAboutBox() {
        if (aboutBox == null) {
            JFrame mainFrame = KasseApp.getApplication().getMainFrame();
            aboutBox = new KasseAboutBox(mainFrame);
            aboutBox.setLocationRelativeTo(mainFrame);
        }
        KasseApp.getApplication().show(aboutBox);
    }
 
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {
 
        mainPanel = new javax.swing.JPanel();
        venstre_jpanel = new javax.swing.JPanel();
        nyVareButton = new javax.swing.JButton();
        hoyre_jpanel = new javax.swing.JPanel();
        statusPanel = new javax.swing.JPanel();
        javax.swing.JSeparator statusPanelSeparator = new javax.swing.JSeparator();
        statusMessageLabel = new javax.swing.JLabel();
        statusAnimationLabel = new javax.swing.JLabel();
        progressBar = new javax.swing.JProgressBar();
        jMenuBar1 = new javax.swing.JMenuBar();
        jMenu1 = new javax.swing.JMenu();
        jMenu2 = new javax.swing.JMenu();
 
        mainPanel.setMaximumSize(new java.awt.Dimension(1024, 768));
        mainPanel.setMinimumSize(new java.awt.Dimension(1024, 768));
        mainPanel.setName("mainPanel"); // NOI18N
        mainPanel.setPreferredSize(new java.awt.Dimension(1024, 768));
        mainPanel.setRequestFocusEnabled(false);
        mainPanel.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                mainPanelMouseClicked(evt);
            }
        });
 
        venstre_jpanel.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        venstre_jpanel.setMaximumSize(new java.awt.Dimension(500, 748));
        venstre_jpanel.setMinimumSize(new java.awt.Dimension(500, 748));
        venstre_jpanel.setName("venstre_jpanel"); // NOI18N
        venstre_jpanel.setPreferredSize(new java.awt.Dimension(500, 748));
 
        org.jdesktop.application.ResourceMap resourceMap = org.jdesktop.application.Application.getInstance(kasse.KasseApp.class).getContext().getResourceMap(KasseView.class);
        nyVareButton.setText(resourceMap.getString("nyVareButton.text")); // NOI18N
        nyVareButton.setName("nyVareButton"); // NOI18N
        nyVareButton.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                nyVareButtonMouseClicked(evt);
            }
        });
 
        javax.swing.GroupLayout venstre_jpanelLayout = new javax.swing.GroupLayout(venstre_jpanel);
        venstre_jpanel.setLayout(venstre_jpanelLayout);
        venstre_jpanelLayout.setHorizontalGroup(
            venstre_jpanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(venstre_jpanelLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(nyVareButton)
                .addContainerGap(417, Short.MAX_VALUE))
        );
        venstre_jpanelLayout.setVerticalGroup(
            venstre_jpanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, venstre_jpanelLayout.createSequentialGroup()
                .addContainerGap(715, Short.MAX_VALUE)
                .addComponent(nyVareButton)
                .addContainerGap())
        );
 
        hoyre_jpanel.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        hoyre_jpanel.setMaximumSize(new java.awt.Dimension(500, 748));
        hoyre_jpanel.setMinimumSize(new java.awt.Dimension(500, 748));
        hoyre_jpanel.setName("hoyre_jpanel"); // NOI18N
        hoyre_jpanel.setPreferredSize(new java.awt.Dimension(500, 748));
 
        javax.swing.GroupLayout hoyre_jpanelLayout = new javax.swing.GroupLayout(hoyre_jpanel);
        hoyre_jpanel.setLayout(hoyre_jpanelLayout);
        hoyre_jpanelLayout.setHorizontalGroup(
            hoyre_jpanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 498, Short.MAX_VALUE)
        );
        hoyre_jpanelLayout.setVerticalGroup(
            hoyre_jpanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 749, Short.MAX_VALUE)
        );
 
        javax.swing.GroupLayout mainPanelLayout = new javax.swing.GroupLayout(mainPanel);
        mainPanel.setLayout(mainPanelLayout);
        mainPanelLayout.setHorizontalGroup(
            mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(mainPanelLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(venstre_jpanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(hoyre_jpanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
        mainPanelLayout.setVerticalGroup(
            mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(mainPanelLayout.createSequentialGroup()
                .addContainerGap()
                .addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(hoyre_jpanel, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 751, Short.MAX_VALUE)
                    .addComponent(venstre_jpanel, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 751, Short.MAX_VALUE))
                .addContainerGap())
        );
 
        mainPanel.getAccessibleContext().setAccessibleName(resourceMap.getString("mainPanel.AccessibleContext.accessibleName")); // NOI18N
 
        statusPanel.setName("statusPanel"); // NOI18N
 
        statusPanelSeparator.setName("statusPanelSeparator"); // NOI18N
 
        statusMessageLabel.setName("statusMessageLabel"); // NOI18N
 
        statusAnimationLabel.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        statusAnimationLabel.setName("statusAnimationLabel"); // NOI18N
 
        progressBar.setName("progressBar"); // NOI18N
 
        javax.swing.GroupLayout statusPanelLayout = new javax.swing.GroupLayout(statusPanel);
        statusPanel.setLayout(statusPanelLayout);
        statusPanelLayout.setHorizontalGroup(
            statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(statusPanelSeparator, javax.swing.GroupLayout.DEFAULT_SIZE, 1026, Short.MAX_VALUE)
            .addGroup(statusPanelLayout.createSequentialGroup()
                .addContainerGap()
                .addComponent(statusMessageLabel)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 856, Short.MAX_VALUE)
                .addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(statusAnimationLabel)
                .addContainerGap())
        );
        statusPanelLayout.setVerticalGroup(
            statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(statusPanelLayout.createSequentialGroup()
                .addComponent(statusPanelSeparator, javax.swing.GroupLayout.PREFERRED_SIZE, 2, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(statusMessageLabel)
                    .addComponent(statusAnimationLabel)
                    .addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(3, 3, 3))
        );
 
        jMenuBar1.setName("jMenuBar1"); // NOI18N
 
        jMenu1.setText(resourceMap.getString("jMenu1.text")); // NOI18N
        jMenu1.setName("jMenu1"); // NOI18N
        jMenuBar1.add(jMenu1);
 
        jMenu2.setText(resourceMap.getString("jMenu2.text")); // NOI18N
        jMenu2.setName("jMenu2"); // NOI18N
        jMenuBar1.add(jMenu2);
 
        setComponent(mainPanel);
        setStatusBar(statusPanel);
    }// </editor-fold>
 
    private void mainPanelMouseClicked(java.awt.event.MouseEvent evt) {                                       
        // TODO add your handling code here:
    }                                      
 
    private void fyllVareVindu(String varegruppe){
        //finner antall varer for den aktuelle gruppe
 
        JPanel varevindu = new JPanel(new GridLayout(4,2));
    }
    private void nyVareButtonMouseClicked(java.awt.event.MouseEvent evt) {
        //lager vindu for ny vare på venstresiden av skjermen
        Venstreside JPanelvenstre = new Venstreside();
        JButton b = new JButton("asdf");
        hoyre_jpanel.add(b, BorderLayout.NORTH);
        hoyre_jpanel.validate();
        hoyre_jpanel.repaint();
        JPanelvenstre.nyVareVenstreside(venstre_jpanel);
 
}
 
    // Variables declaration - do not modify
    private javax.swing.JPanel hoyre_jpanel;
    private javax.swing.JMenu jMenu1;
    private javax.swing.JMenu jMenu2;
    private javax.swing.JMenuBar jMenuBar1;
    private javax.swing.JPanel mainPanel;
    private javax.swing.JButton nyVareButton;
    private javax.swing.JProgressBar progressBar;
    private javax.swing.JLabel statusAnimationLabel;
    private javax.swing.JLabel statusMessageLabel;
    private javax.swing.JPanel statusPanel;
    private javax.swing.JPanel venstre_jpanel;
    // End of variables declaration
 
    private final Timer messageTimer;
    private final Timer busyIconTimer;
    private final Icon idleIcon;
    private final Icon[] busyIcons = new Icon[15];
    private int busyIconIndex = 0;
    public javax.swing.JPanel venstreSide;
    public double frame_bredde;
    public double frame_hoyde;
 
    private JDialog aboutBox;
    private JDialog nyVare;
}

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Select all Open in new window

by: 0791882310Posted on 2009-06-16 at 08:24:05ID: 24638934

is there a reason why you are wanting to add a button to the layout when a button is clicked??.. the way it is right now netbeans is using a group layout manager, so you can't just add a component to your panel.. and you can't change it's layout manager... real world scenario would be to use a toggle button, or to have the button placed using netbeans "drag and drop" and then set it's visibility to no until the action to show it.... so in your constructor method would be

whateverButton.setVisible(false);

then in your action would be

whateverButton.setVisible(true);

by: Stian_BPosted on 2009-06-16 at 08:30:06ID: 24639002

ok thanks for the reply.

The button was just a test to add a component, what i really want to do is replace all content in the JPanel venstre_jpanel with many labels and textfields (like a web form), to register a new product, user or whatever. but i think setVisible on all those components might not be a good solution, and Netbeans won't let me place components on top of each other, so i have to remove the content of the jpanel and add new ones..

I'm thinking maybe to drop the netbeans drag and drop, do you believe it would be easier to switch content then?

by: Stian_BPosted on 2009-06-16 at 08:47:57ID: 24639217

maybe you could just put me in the right direction? and i will gladly accept it as a solution! whether to use gridlayout on the whole thing or something else.

Here's what i plan to code: Main Jpanel covering the whole frame, with two large JPanels, right and left. All the content within this two jpanels will be replaced at some time by the user choosing to for example show the form for adding a new user or product in the database.

stian

by: Stian_BPosted on 2009-06-16 at 12:10:19ID: 31592995

not excactly solution, but you got me on the right track:)
tnx

by: 0791882310Posted on 2009-06-16 at 12:38:10ID: 24641681

ok what it sounds like your doing is lets say... some type of user registration where there will be more than one page of stuff to fill out right??... you notice when you install something... or have software when you have a next button to hit... that the page kinda flashes before the new content is loaded??.. that's because they are different frames... what you can do is not use netbeans wysiwyg and construct each page of the "form" in a frame, and then call the frame when need be... i can explain more if you need me to...

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How to add components to JPanel

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