Java tutorial
/* * Copyright (C) 2007 Unicon, Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the 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 of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this distribution. It is also available here: * http://www.fsf.org/licensing/licenses/gpl.html * * As a special exception to the terms and conditions of version * 2 of the GPL, you may redistribute this Program in connection * with Free/Libre and Open Source Software ("FLOSS") applications * as described in the GPL FLOSS exception. You should have received * a copy of the text describing the FLOSS exception along with this * distribution. */ package net.unicon.academus.apps.messaging.engine; import net.unicon.academus.apps.ErrorMessage; import net.unicon.academus.apps.messaging.MessagingApplicationContext; import net.unicon.academus.apps.messaging.MessagingUserContext; import net.unicon.academus.civisselector.SelectGroupQuery; import net.unicon.civis.ICivisEntity; import net.unicon.penelope.IDecisionCollection; import net.unicon.warlock.Handle; import net.unicon.warlock.IAction; import net.unicon.warlock.IActionResponse; import net.unicon.warlock.IScreen; import net.unicon.warlock.IUserContext; import net.unicon.warlock.IWarlockFactory; import net.unicon.warlock.StateMachine; import net.unicon.warlock.WarlockException; import net.unicon.warlock.XmlFormatException; import net.unicon.warlock.fac.AbstractWarlockFactory; import net.unicon.warlock.fac.SimpleActionResponse; import org.dom4j.Attribute; import org.dom4j.Element; public final class ComposeNavigateSelectorAction extends AbstractWarlockFactory.AbstractAction { // Instance Members. private MessagingApplicationContext app; private IScreen screen; private IScreen screenError; private final String nextScreen; /* * Public API. */ public static IAction parse(Element e, IWarlockFactory owner) throws WarlockException { // Assertions. if (e == null) { String msg = "Argument 'e [Element]' cannot be null."; throw new IllegalArgumentException(msg); } if (!e.getName().equals("action")) { String msg = "Argument 'e [Element]' must be an <action> element."; throw new IllegalArgumentException(msg); } if (owner == null) { String msg = "Argument 'owner' cannot be null."; throw new IllegalArgumentException(msg); } // Handle. Attribute h = e.attribute("handle"); if (h == null) { String msg = "Element <action> is missing required attribute " + "'handle'."; throw new XmlFormatException(msg); } Handle handle = Handle.create(h.getValue()); // Choices. String[] choices = new String[0]; Attribute p = e.attribute("inpt"); if (p == null) throw new XmlFormatException("ComposeNavigateAction requires attribute 'inpt'."); choices = p.getValue().split(","); p = e.attribute("to-screen"); if (p == null) throw new XmlFormatException("ComposeNavigateAction requires attribute 'to-screen'."); String nextScreen = p.getValue().toLowerCase(); return new ComposeNavigateSelectorAction(owner, handle, choices, nextScreen); } public void init(StateMachine m) { // Assertions. if (m == null) { String msg = "Argument 'm [StateMachine]' cannot be null."; throw new IllegalArgumentException(msg); } app = (MessagingApplicationContext) m.getContext(); screen = m.getScreen(Handle.create(nextScreen)); screenError = m.getScreen(Handle.create("message_compose")); } public IActionResponse invoke(IDecisionCollection[] decisions, IUserContext ctx) throws WarlockException { // Assertions. if (decisions == null) { String msg = "Argument 'decisions' cannot be null."; throw new IllegalArgumentException(msg); } if (ctx == null) { String msg = "Argument 'ctx' cannot be null."; throw new IllegalArgumentException(msg); } MessagingUserContext muc = (MessagingUserContext) ctx; ErrorMessage error = null; if (decisions.length > 0) { // Save the Subject, Body, and Priority from decision // cRecipients will contain recipients to remove, if 'action' is remove recips. Ignore otherwise. // cAttachments will contain attachments to remove, if action is remove attachment. Ignore otherwise. IDecisionCollection d = decisions[0]; error = ComposeMessageAction.handleComposeDecisions(muc, d); } // register the screen and query muc.registerQuery(new ComposeMessageQuery(muc)); muc.registerScreen(screenError); /*// add the current recipients selection to the recipients already in the list if(muc.getEntitySelection().length > 0){ ICivisEntity[] entities = new ICivisEntity[muc.getPrevEntitySelection().length + muc.getEntitySelection().length]; System.arraycopy(muc.getPrevEntitySelection(), 0, entities , 0, muc.getPrevEntitySelection().length); System.arraycopy(muc.getEntitySelection(), 0, entities , muc.getPrevEntitySelection().length, muc.getEntitySelection().length); muc.setPrevEntitySelection(entities); // clear the current selection muc.setEntitySelection(new ICivisEntity[0]); }*/ IActionResponse rslt = null; if (error != null) { ErrorMessage[] errors = new ErrorMessage[] { error }; rslt = new SimpleActionResponse(screenError, new ComposeMessageQuery(muc, errors)); } else { rslt = new SimpleActionResponse(screen, new SelectGroupQuery(muc)); } return rslt; } /* * Package API. */ private ComposeNavigateSelectorAction(IWarlockFactory owner, Handle handle, String[] choices, String nextScreen) { super(owner, handle, choices); // Instance Members. this.screen = null; this.app = null; this.nextScreen = nextScreen; } }