/*MujMail - Simple mail client for J2MECopyright (C) 2009 David Hauzar <david.hauzar.mujmail@gmail.com>This program is free software; you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation; either version 2 of the License, or(at your option) any later version.This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */package mujmail.tasks;import javax.microedition.lcdui.Displayable;import mujmail.MujMail;/** * Contains information about screen * @author David Hauzar */class ScreenContainer {    private boolean setScreenCalled = false;    private Displayable screen = null;    /**     * Gets the screen that is contained in this container.     * @return the screen that is contained in this container.     */    public Displayable getScreen() {        return screen;    }    /**     * Saves the screen in this container.     * @param screen the screen to be saved in this container.     */    public void setScreen(Displayable screen) {        setScreenCalled = true;        this.screen = screen;    }    /**     * Sets current screen to this container if the container was not seted by     * method <code>setScreen</code>.     */    public void setCurrentScreenIfEmpty() {        if (!setScreenCalled) {            screen = MujMail.mujmail.getDisplay().getCurrent();        }    }}