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public class AutoCompleteComboMain { static final Display display = new Display(); static final Shell shell = new Shell(display); static String[] items = new String[] { "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday" }; public static void main(String[] args) { shell.setText("SWT"); shell.setLayout(new GridLayout()); Combo combo = new Combo(shell, SWT.BORDER); for (int i = 0; i < items.length; i++) { combo.add(items[i]); } ComboUtil.addAutoCompleteFeature(combo); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } display.dispose(); }} |
关键的ComboUtil的代码如下：
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public class ComboUtil { public static void addAutoCompleteFeature(Combo combo) { // Add a key listener combo.addKeyListener(new KeyAdapter() { public void keyReleased(KeyEvent keyEvent) { Combo cmb = ((Combo) keyEvent.getSource()); setClosestMatch(cmb); } // Move the highlight back by one character for backspace public void keyPressed(KeyEvent keyEvent) { if (keyEvent.keyCode == SWT.BS) { Combo cmb = ((Combo) keyEvent.getSource()); Point pt = cmb.getSelection(); cmb.setSelection(new Point(Math.max(0, pt.x - 1), pt.y)); } } private void setClosestMatch(Combo combo) { String str = combo.getText(); String[] cItems = combo.getItems(); // Find Item in Combo Items. If full match returns index int index = -1; for (int i = 0; i < cItems.length; i++) { if (cItems[i].toLowerCase().startsWith(str.toLowerCase())) { index = i; break; } } if (index != -1) { Point pt = combo.getSelection(); combo.select(index); combo.setText(cItems[index]); combo.setSelection(new Point(pt.x, cItems[index].length())); } } }); } |
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原文地址：http://www.cnblogs.com/zyszeal/p/4461288.html
