Bug 54347 [Dialogs] Provide "Yes No Always Never" dialog
In Debug UI, we define a dialog that prompts the user to answer Yes, No, Always, or Never. If anyone's interested, this code is generic and could be shipped as a JFace component. The dialog is in the org.eclipse.debug.ui project; the type name is AlwaysNeverDialog. The dialog supports passing in a preference store and preference key for the dialog to persist an Always or Never selection. For cases where clients don't have a preference store but still want to be able to get at the user's response, it alternatively supports passing in a string buffer where the dialog will store the "always/never/prompt" status.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/MessageDialog.java
* @param title the dialog's title, or <code>null</code> if none
 * @param message the message
 */
public static void openInformation(
	Shell parent,
	String title,
	String message) {
		MessageDialog dialog =
			new MessageDialog(parent, title, null, 
	message, INFORMATION, new String[] { IDialogConstants.OK_LABEL }, 0);
	
	dialog.open();
	return;
}
/** 
 * Convenience method to open a simple Yes/No question dialog.
 *
 * @param parent the parent shell of the dialog, or <code>null</code> if none
 * @param title the dialog's title, or <code>null</code> if none
 * @param message the message
 * @return <code>true</code> if the user presses the OK button,
 *    <code>false</code> otherwise
 */
public static boolean openQuestion(Shell parent, String title, String message) {
	MessageDialog dialog = new MessageDialog(
		parent,
		title, 
		null,	
		message, 
		QUESTION,