Creating a Combo with Sorted List : Combo « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. Combo

import java.util.Arrays;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class ComboSortList {

  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());

    String[] ITEMS = { "A", "B", "C", "D", "E", "F" };
    Arrays.sort(ITEMS);
    final Combo combo = new Combo(shell, SWT.DROP_DOWN);
   combo.setItems(ITEMS);

    combo.addSelectionListener(new SelectionListener() {
      public void widgetSelected(SelectionEvent e) {
        System.out.println("Selected index: " + combo.getSelectionIndex() + ", selected item: "
            + combo.getItem(combo.getSelectionIndex()) + ", text content in the text field: "
            + combo.getText());
      }

      public void widgetDefaultSelected(SelectionEvent e) {
        System.out.println("Default selected index: "
            + combo.getSelectionIndex()
            + ", selected item: "
            + (combo.getSelectionIndex() == -1 ? "<null>" : combo
                .getItem(combo.getSelectionIndex())) + ", text content in the text field: "
            + combo.getText());
        String text = combo.getText();
        if (combo.indexOf(text) < 0) { // Not in the list yet.
          combo.add(text);

          // Re-sort
          String[] items = combo.getItems();
          Arrays.sort(items);
          combo.setItems(items);
        }
      }
    });

    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
}

The org.eclipse.swt.custom.CCombo class can also be used to create combo boxes.CCombos are usually used inside table cells.

17.11.Combo
	17.11.1.	Introducing Combo
	17.11.2.	Create a dropdown Combo
	17.11.3.	Create a read-only (non-editable) Combo
	17.11.4.	Create a 'simple' Combo
	17.11.5.	Getting selected item index from Combo
	17.11.6.	Retrieve the content text of the text field of a combo
	17.11.7.	Programmatically select an item from the list
	17.11.8.	Deselect an item
	17.11.9.	Getting Items
	17.11.10.	Setting Items
	17.11.11.	Finding Items
	17.11.12.	Adding Items
	17.11.13.	Add method appends an item to the end of the list
	17.11.14.	Removing Items
	17.11.15.	To remove multiple items
	17.11.16.	Removes the first found item with given text
	17.11.17.	Creating a Combo with Sorted List