001/*
002 * (C) Copyright 2006-2008 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Alexandre Russel
016 *
017 * $Id$
018 */
019
020package org.nuxeo.ecm.platform.annotations.gwt.client.annotea;
021
022import org.nuxeo.ecm.platform.annotations.gwt.client.configuration.WebConfiguration;
023import org.nuxeo.ecm.platform.annotations.gwt.client.controler.AnnotationController;
024import org.nuxeo.ecm.platform.annotations.gwt.client.model.Annotation;
025
026import com.allen_sauer.gwt.log.client.Log;
027import com.google.gwt.core.client.GWT;
028import com.google.gwt.http.client.Request;
029import com.google.gwt.http.client.RequestBuilder;
030import com.google.gwt.http.client.RequestCallback;
031import com.google.gwt.http.client.RequestException;
032import com.google.gwt.http.client.Response;
033import com.google.gwt.http.client.URL;
034import com.google.gwt.user.client.Window;
035
036/**
037 * @author Alexandre Russel
038 */
039public class AnnoteaClient {
040
041    private static AnnoteaResponseManager responseManager;
042
043    private static WebConfiguration webConfiguration;
044
045    private RequestBuilder postRequest;
046
047    private static AnnotationController controller;
048
049    public AnnoteaClient(AnnotationController annotationController) {
050        controller = annotationController;
051        responseManager = new AnnoteaResponseManager(annotationController);
052        webConfiguration = annotationController.getWebConfiguration();
053    }
054
055    public void submitAnnotation(Annotation newAnnotation) {
056        AnnotationXmlGenerator xmlGenerator = new AnnotationXmlGenerator(webConfiguration, newAnnotation);
057        String request = xmlGenerator.generateXml();
058        postRequest = new RequestBuilder(RequestBuilder.POST, URL.encode(controller.getAnnoteaServerUrl()));
059        try {
060            postRequest.sendRequest(request, new RequestCallback() {
061                public void onError(Request request, Throwable exception) {
062                    Window.alert("Error while sending data to annotea server: " + exception.toString());
063                }
064
065                public void onResponseReceived(Request request, Response response) {
066                    responseManager.processSubmitAnnotationResponse(response.getText());
067                    getAnnotationList(controller.getDocumentUrl());
068                    controller.reloadAnnotations();
069                }
070            });
071        } catch (RequestException e) {
072            GWT.log("Error while sending new annotation", e);
073            Log.debug("Error while sending new annotation", e);
074        }
075    }
076
077    public void getAnnotationList(String annotates) {
078        getAnnotationList(annotates, false);
079    }
080
081    public void getAnnotationList(String annotates, final boolean forceDecorate) {
082        if (annotates.contains("?")) {
083            annotates = annotates.substring(0, annotates.indexOf('?'));
084        }
085        String url = controller.getAnnoteaServerUrl() + "?w3c_annotates=" + annotates;
086        RequestBuilder getRequest = new RequestBuilder(RequestBuilder.GET, URL.encode(url));
087        try {
088            getRequest.sendRequest(null, new RequestCallback() {
089                public void onError(Request request, Throwable exception) {
090                }
091
092                public void onResponseReceived(Request request, Response response) {
093                    responseManager.processAnnotationListResponse(response.getText());
094                    if (forceDecorate) {
095                        // Force all the annotations to be redecorated
096                        controller.updateAnnotations(true);
097                    }
098                }
099            });
100        } catch (RequestException e) {
101            GWT.log("Error while requesting annotations: " + url, e);
102            Log.debug("Error while requesting annotations: " + url, e);
103            Window.alert(e.toString());
104        }
105    }
106
107    public void deleteAnnotation(String annotates, final Annotation annotation) {
108        if (annotates.contains("?")) {
109            annotates = annotates.substring(0, annotates.indexOf('?'));
110        }
111
112        String url = controller.getAnnoteaServerUrl() + "/" + annotation.getUUID();
113        url += "?document_url=" + annotates;
114        RequestBuilder req = new RequestBuilder("DELETE", url) {
115            // nothing to override... used to make a *real* HTTP DELETE request
116        };
117
118        try {
119            req.sendRequest(null, new RequestCallback() {
120                public void onError(Request arg0, Throwable arg1) {
121                }
122
123                public void onResponseReceived(Request arg0, Response arg1) {
124                    getAnnotationList(Window.Location.getHref(), true);
125                    controller.reloadAnnotations();
126                }
127            });
128        } catch (RequestException e) {
129            GWT.log("Error while deleting an annotation: " + url, e);
130            Log.debug("Error while deleting an annotation: " + url, e);
131        }
132    }
133
134}