Java JTabbedPane moveTab(JTabbedPane tabPane, int srcIndex, int dstIndex)

Description

As far as internal structure of JTabbedPane data model does not correspond to its visual representation, that is, component located on tab with index X is not located in the internal components array using the same index, we have to rearrange this array each time tab has been moved and repopulate/repaint JTabbedPane instance after that.

License

Open Source License

Declaration

public static void moveTab(JTabbedPane tabPane, int srcIndex, int dstIndex) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.awt.Component;
import javax.swing.Icon;
import javax.swing.JTabbedPane;

public class Main {
    /**//w  ww  .  jav a  2  s.co  m
     * As far as internal structure of JTabbedPane data model does not correspond to its visual representation, that is, component located
     * on tab with index X is <b>not</b> located in the internal components array using the same index, we have to rearrange this array
     * each time tab has been moved and repopulate/repaint JTabbedPane instance after that.
     * 
     */
    public static void moveTab(JTabbedPane tabPane, int srcIndex, int dstIndex) {

        int cnt = tabPane.getTabCount();

        // get tabpane's components/captions/icons
        Component[] components = new Component[cnt];
        for (int i = 0; i < cnt; i++) {
            components[i] = tabPane.getComponent(i);
        }
        String[] captions = new String[cnt];
        for (int i = 0; i < cnt; i++) {
            captions[i] = tabPane.getTitleAt(i);
        }
        Icon[] icons = new Icon[cnt];
        for (int i = 0; i < cnt; i++) {
            icons[i] = tabPane.getIconAt(i);
        }

        // remember component/caption/icon that has to be moved
        Component srcComp = components[srcIndex];
        String srcCap = captions[srcIndex];
        Icon srcIcon = icons[srcIndex];

        // rearrange components/captions/icons using shifting
        if (srcIndex > dstIndex) {
            for (int i = srcIndex; i > dstIndex; i--) {
                components[i] = components[i - 1];
                captions[i] = captions[i - 1];
                icons[i] = icons[i - 1];
            }
        } else {
            for (int i = srcIndex; i < dstIndex; i++) {
                components[i] = components[i + 1];
                captions[i] = captions[i + 1];
                icons[i] = icons[i + 1];
            }
        }

        // set moved component/caption/icon to its new position
        components[dstIndex] = srcComp;
        captions[dstIndex] = srcCap;
        icons[dstIndex] = srcIcon;

        // remove everything from tabpane before repopulating it
        tabPane.removeAll();

        // repopulate tabpane with resulting components/captions
        for (int i = 0; i < cnt; i++) {
            tabPane.addTab(captions[i], icons[i], components[i]);
        }

        // set moved component as selected
        tabPane.setSelectedIndex(dstIndex);

        // repaint tabpane
        tabPane.repaint();

    }

    public static void moveTab(JTabbedPane srcTabPane, int index, JTabbedPane dstTabPane) {

        Component component = srcTabPane.getComponent(index);
        String caption = srcTabPane.getTitleAt(index);
        Icon icon = srcTabPane.getIconAt(index);
        srcTabPane.remove(component);
        dstTabPane.addTab(caption, icon, component);

    }
}

Related

1. getTabsHeight()
2. getVirtualWidth(Segment seg, int tabSize)
3. installPrefsHandler(final Preferences prefs, final String name, final JTabbedPane tabbedPane)
4. installPrefsHandler(Preferences prefs, String string, JTabbedPane tabbedPane)
5. isInTabbedContainer(Component c)
6. selectTab(JTabbedPane pane, String title)
7. setDefaultMnemonics(final JTabbedPane jtp)
8. setSelectComponentTab(Component component)
9. useTabToChangeFocus(Component comp)