NetBeans User Group Medan

wah, setelah cari sana-sini, search gunakan google. untuk mencari gimana caranya membuat Tabbed Pane dialog seperti yang ada di NetBeans 6.8, akhirnya dapat juga. Eh malahan adanya di Tutorial Netbeans

Ok gini nih Tabbed Pane ala Netbeans (abis gak tau istilahnya)

Hahahaha. pake tombol x untuk close kan tab. keren kan. Saya juga sering menggunakan tampilan seperti ini saat membangun project MDI (JFrame dilengkapi dengan Desktop Pane, dan didalam JFrame terdapat beberapa JInternalFrame).

Ok gini caranya

1. Buat Project Baru (tentunya Netbeans)
2. Buat 1 (Satu) java class dengan nama ButtonTabComponent
3. Copy + Paste kan coding dibawah

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.AbstractButton;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.plaf.basic.BasicButtonUI;

public class ButtonTabComponent extends JPanel {
    private final JTabbedPane pane;

    public ButtonTabComponent(final JTabbedPane pane) {
        //unset default FlowLayout’ gaps
        super(new FlowLayout(FlowLayout.LEFT, 0, 0));
        if (pane == null) {
            throw new NullPointerException("TabbedPane is null");
        }
        this.pane = pane;
        setOpaque(false);

        //make JLabel read titles from JTabbedPane
        JLabel label = new JLabel() {
            public String getText() {
                int i = pane.indexOfTabComponent(ButtonTabComponent.this);
                if (i != -1) {
                    return pane.getTitleAt(i);
                }
                return null;
            }
        };

        add(label);
        //add more space between the label and the button
        label.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 5));
        //tab button
        JButton button = new TabButton();
        add(button);
        //add more space to the top of the component
        setBorder(BorderFactory.createEmptyBorder(2, 0, 0, 0));
    }

    private class TabButton extends JButton implements ActionListener {
        public TabButton() {
            int size = 17;
            setPreferredSize(new Dimension(size, size));
            setToolTipText("close this tab");
            //Make the button looks the same for all Laf’s
            setUI(new BasicButtonUI());
            //Make it transparent
            setContentAreaFilled(false);
            //No need to be focusable
            setFocusable(false);
            setBorder(BorderFactory.createEtchedBorder());
            setBorderPainted(false);
            //Making nice rollover effect
            //we use the same listener for all buttons
            addMouseListener(buttonMouseListener);
            setRolloverEnabled(true);
            //Close the proper tab by clicking the button
            addActionListener(this);
        }

        public void actionPerformed(ActionEvent e) {
            int i = pane.indexOfTabComponent(ButtonTabComponent.this);
            if (i != -1) {
                pane.remove(i);
            }
        }

        //we don’t want to update UI for this button
        public void updateUI() {
        }

        //paint the cross
        protected void paintComponent(Graphics g) {
            super.paintComponent(g);
            Graphics2D g2 = (Graphics2D) g.create();
            //shift the image for pressed buttons
            if (getModel().isPressed()) {
                g2.translate(1, 1);
            }
            g2.setStroke(new BasicStroke(2));
            g2.setColor(Color.BLACK);
            if (getModel().isRollover()) {
                g2.setColor(Color.MAGENTA);
            }
            int delta = 6;
            g2.drawLine(delta, delta, getWidth() - delta - 1, getHeight() - delta - 1);
            g2.drawLine(getWidth() - delta - 1, delta, delta, getHeight() - delta - 1);
            g2.dispose();
        }
    }

    private final static MouseListener buttonMouseListener = new MouseAdapter() {
        public void mouseEntered(MouseEvent e) {
            Component component = e.getComponent();
            if (component instanceof AbstractButton) {
                AbstractButton button = (AbstractButton) component;
                button.setBorderPainted(true);
            }
        }

        public void mouseExited(MouseEvent e) {
            Component component = e.getComponent();
            if (component instanceof AbstractButton) {
                AbstractButton button = (AbstractButton) component;
                button.setBorderPainted(false);
            }
        }
    };
}

4. Tambahkan 1(satu) buah JFrame
5. Tambahkan juga component Swing JTabbed Pane diberi nama pane dan satu buah Button dengan nama btnTambah
6. Pada Tombol Action (bole pake Swing.Action atau juga Klik Dua kali pada jButton Anda) tambahkan code dibawah

        int nTab;

        nTab = pane.getTabCount();

        String title = "Tab " + nTab;
        pane.add(title, new JLabel(title));

        pane.setTabComponentAt(nTab, new ButtonTabComponent(pane));

        pane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
        pane.setSelectedIndex(nTab);

7. Sudah selesai, tinggal dijalankan.

Source code lengkapnya dapat didownload disini

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Tags: java, swing, tabbedpane

This entry was posted on Friday, January 29th, 2010 at 3:41 pm and is filed under Java Swing. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.