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 java.util.ArrayList; import java.util.Arrays; import java.util.List; import net.unicon.academus.apps.ErrorMessage; import net.unicon.academus.apps.messaging.MessagingApplicationContext; import net.unicon.academus.apps.messaging.MessagingUserContext; import net.unicon.civis.ICivisEntity; import net.unicon.mercury.DraftMessage; import net.unicon.mercury.Priority; import net.unicon.penelope.IDecision; import net.unicon.penelope.IDecisionCollection; import net.unicon.penelope.ISelection; 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 ComposeMessageAction extends AbstractWarlockFactory.AbstractAction { // Instance Members. private MessagingApplicationContext app; private IScreen screen; private final String mode; /* * 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) { choices = p.getValue().split(","); } // Mode (Edit or Preview). String mode = "edit"; p = e.attribute("mode"); if (p != null) { mode = p.getValue().toLowerCase(); } return new ComposeMessageAction(owner, handle, choices, mode); } 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("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; String msg = null; String mode = this.mode; ErrorMessage error = null; if (decisions.length > 0) { IDecisionCollection d = decisions[0]; error = handleComposeDecisions(muc, d); if (error == null) { DraftMessage draft = muc.getDraft(); try { // Attachment removal if (mode.equals("attachment_remove")) { draft.removeAttachment( Integer.parseInt(d.getDecision("removeAttachment").getFirstSelectionHandle())); mode = "edit"; } // Recipient removal if (mode.equals("recipient_remove")) { ISelection[] s = d.getDecision("cRecipients").getSelections(); int[] sels; ICivisEntity[] recipients; if (s.length > 0) { if (s.length > 1) { sels = new int[s.length]; List entityList = new ArrayList(Arrays.asList(muc.getPrevEntitySelection())); for (int i = 0; i < s.length; i++) { sels[i] = Integer.parseInt((s[i].getOption().getHandle().getValue())); } Arrays.sort(sels); } else { sels = new int[] { Integer.parseInt((s[0].getOption().getHandle().getValue())) }; } recipients = new ICivisEntity[muc.getPrevEntitySelection().length - sels.length]; ICivisEntity[] entities = muc.getPrevEntitySelection(); int selIndex = 0; int rIndex = 0; for (int i = 0; i < entities.length; i++) { if (selIndex < sels.length && sels[selIndex] == i) { selIndex++; } else { recipients[rIndex++] = entities[i]; } } muc.setPrevEntitySelection(recipients); } mode = "edit"; } } catch (Exception e) { // TODO: Log exception!!! e.printStackTrace(System.err); error = new ErrorMessage("other", "Error parsing decisions. " + e.getMessage(), "Please contact a Portal administrator for assistance."); } } } IActionResponse rslt = null; if (error == null) rslt = new SimpleActionResponse(screen, new ComposeMessageQuery(muc, mode)); else rslt = new SimpleActionResponse(screen, new ComposeMessageQuery(muc, new ErrorMessage[] { error }, mode)); return rslt; } /* * Package API. */ static ErrorMessage handleComposeDecisions(MessagingUserContext muc, IDecisionCollection d) { // Save the Subject, Body, and Priority from decision // // cRecipients will contain recipients to remove, if mode is remove // recips. Ignore otherwise. // // cAttachments will contain attachments to remove, if modes remove // attachment. Ignore otherwise. ErrorMessage rslt = null; DraftMessage draft = muc.getDraft(); String buf = null; IDecision de = null; try { de = d.getDecision("cBody"); if (de != null) { buf = (String) de.getFirstSelectionValue(); if (buf != null) { draft.setBody(buf); } } de = d.getDecision("cSubject"); if (de != null) { buf = (String) de.getFirstSelectionValue(); if (buf != null) draft.setSubject(buf); } de = d.getDecision("cPriority"); if (de != null) { buf = de.getFirstSelectionHandle(); if (buf != null) draft.setPriority(Priority.getInstance(Integer.parseInt(buf))); } de = d.getDecision("cEmail"); if (de != null) { buf = de.getFirstSelectionHandle(); if (buf != null) { // Must send by email, too. muc.setDraftSendEmailCopy("yes".equals(buf)); } } } catch (Exception e) { // TODO: Log exception!!! e.printStackTrace(System.err); rslt = new ErrorMessage("other", "Error parsing decisions. " + e.getMessage(), "Please contact a Portal administrator for assistance."); } return rslt; } private ComposeMessageAction(IWarlockFactory owner, Handle handle, String[] choices, String mode) { super(owner, handle, choices); // Instance Members. this.screen = null; this.app = null; this.mode = mode; } }