Application: gvSIG desktop » Library: org.gvsig.tools

/*

 * To change this license header, choose License Headers in Project Properties.

 * To change this template file, choose Tools | Templates

 * and open the template in the editor.

 */

package org.gvsig.tools.swing.impl;

import java.awt.event.FocusEvent;

import java.awt.event.FocusListener;

import org.apache.commons.lang3.ArrayUtils;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 *

 * @author jjdelcerro

 */

public class Utils {

    private static final Logger LOGGER = LoggerFactory.getLogger(Utils.class);

    private Utils() {

        // No se debe instanciar

    }

    public static void fireFocusEvent(java.awt.Component c, int eventId) {

        FocusListener[] focusListeners = c.getListeners(FocusListener.class);

        if( !ArrayUtils.isEmpty(focusListeners) ) {

            for (FocusListener focusListener : focusListeners) {

                if( focusListener == null ) {

                    continue;

                }

                try {

                    FocusEvent e = new FocusEvent(c, eventId);

                    switch(eventId) {

                        case FocusEvent.FOCUS_GAINED:

                            focusListener.focusGained(e);

                            break;

                        case FocusEvent.FOCUS_LOST:

                            focusListener.focusLost(e);

                            break;

                    }

                } catch(Throwable t) {

                    LOGGER.warn("Can't fire eveny focusGained on DropDownLabel ("+focusListener.getClass().getName()+").",t);

                }

            }

        }

    }

    public static void propagateFocusEvent(java.awt.Component source, java.awt.Component target) {

        source.addFocusListener(new FocusListener() {

            @Override

            public void focusGained(FocusEvent e) {

                fireFocusEvent(target, FocusEvent.FOCUS_GAINED);

            }

            @Override

            public void focusLost(FocusEvent e) {

                fireFocusEvent(target, FocusEvent.FOCUS_LOST);

            }

        });

    }

}