001    // This file is part of the Attempto Java Packages.
002    // Copyright 2008-2009, Attempto Group, University of Zurich (see http://attempto.ifi.uzh.ch).
003    //
004    // The Attempto Java Packages is free software: you can redistribute it and/or modify it under the
005    // terms of the GNU Lesser General Public License as published by the Free Software Foundation,
006    // either version 3 of the License, or (at your option) any later version.
007    //
008    // The Attempto Java Packages is distributed in the hope that it will be useful, but WITHOUT ANY
009    // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
010    // PURPOSE. See the GNU Lesser General Public License for more details.
011    //
012    // You should have received a copy of the GNU Lesser General Public License along with the Attempto
013    // Java Packages. If not, see http://www.gnu.org/licenses/.
014    
015    package ch.uzh.ifi.attempto.aceeditor;
016    
017    import nextapp.echo2.app.ApplicationInstance;
018    import nextapp.echo2.app.Window;
019    import nextapp.echo2.webcontainer.ContainerContext;
020    import nextapp.echo2.webcontainer.WebContainerServlet;
021    import ch.uzh.ifi.attempto.ape.APELocal;
022    import ch.uzh.ifi.attempto.echocomp.ServerDelayMessage;
023    import ch.uzh.ifi.attempto.echocomp.Style;
024    
025    /**
026     * This servlet class is used by the web server to start the ACE Editor.
027     * 
028     * @author Tobias Kuhn
029     */
030    public class ACEEditorServlet extends WebContainerServlet {
031    
032            private static final long serialVersionUID = -2533205689651186115L;
033    
034            /**
035             * Creates a new ACE Editor servlet.
036             */
037            public ACEEditorServlet() {
038            }
039    
040            public ApplicationInstance newApplicationInstance() {
041    
042                    return new ApplicationInstance() {
043    
044                            private static final long serialVersionUID = 2982410120358060245L;
045    
046                            public Window init() {
047                                    setStyleSheet(Style.styleSheet);
048    
049                                    if (!APELocal.isInitialized()) {
050                                            String apeCommand = getServletContext().getInitParameter("apecommand");
051                                            if (apeCommand == null) apeCommand = "ape.exe";
052                                            APELocal.init(apeCommand);
053                                    }
054                                    
055                                    ContainerContext cc = (ContainerContext) ApplicationInstance.getActive().getContextProperty(ContainerContext.CONTEXT_PROPERTY_NAME);
056                                    cc.setServerDelayMessage(new ServerDelayMessage("Please wait...", "../wait.gif"));
057                                    // (The wait icon should be copied at the right place on the server.)
058                                    
059                                    String lexiconFile = getInitParameter("lexicon");
060                                    if (lexiconFile == null) lexiconFile = "lexicon.pl";
061                                    boolean parseWithClexEnabled = !"off".equals(getInitParameter("parse_with_clex"));
062                                    return new ACEEditor(lexiconFile, parseWithClexEnabled);
063                            }
064    
065                    };
066    
067            }
068    
069    }