/**
* Display a Prompting Message to enter some text in the Application. The OK button will be
* enabled iff the text is not empty or blank.
*
* @param title
* @param message
* @param callback
*/
public static MessageBox promptMessage(
String title, String message, Listener<MessageBoxEvent> callback) {
final MessageBox box = MessageBox.prompt(title, message, callback);
final Button okButton = box.getDialog().getButtonById(Dialog.OK);
okButton.disable();
final TextField<String> textBox = box.getTextBox();
textBox.addKeyListener(
new KeyListener() {
@Override
public void componentKeyPress(ComponentEvent event) {
if (okButton.isEnabled() && event.getKeyCode() == KeyCodes.KEY_ENTER) {
box.getDialog().hide(okButton);
}
}
});
box.addListener(
Events.OnKeyUp,
new Listener<MessageBoxEvent>() {
@Override
public void handleEvent(MessageBoxEvent be) {
String value = textBox.getValue();
if (value == null || value.trim().equals("")) {
okButton.disable();
} else {
okButton.enable();
}
}
});
return box;
}
