001/*
002 * (C) Copyright 2015 Nuxeo SA (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-2.1.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 *     Anahide Tchertchian
016 */
017package org.nuxeo.ecm.web.resources.jsf;
018
019import java.io.IOException;
020import java.util.List;
021import java.util.Map;
022
023import javax.faces.component.UIComponent;
024import javax.faces.context.FacesContext;
025import javax.faces.context.ResponseWriter;
026
027import org.apache.commons.lang.StringUtils;
028import org.apache.commons.logging.Log;
029import org.apache.commons.logging.LogFactory;
030import org.nuxeo.ecm.web.resources.api.Resource;
031import org.nuxeo.ecm.web.resources.api.ResourceContextImpl;
032import org.nuxeo.ecm.web.resources.api.ResourceType;
033import org.nuxeo.ecm.web.resources.api.service.WebResourceManager;
034import org.nuxeo.runtime.api.Framework;
035
036/**
037 * Renderer for resource bundles, handling several types of resources (css, js, html for now).
038 *
039 * @since 7.3
040 */
041public class ResourceBundleRenderer extends AbstractResourceRenderer {
042
043    public static final String RENDERER_TYPE = "org.nuxeo.ecm.web.resources.jsf.ResourceBundle";
044
045    private static final Log log = LogFactory.getLog(ResourceBundleRenderer.class);
046
047    @Override
048    public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
049        Map<String, Object> attributes = component.getAttributes();
050        String name = (String) attributes.get("name");
051        String type = (String) attributes.get("type");
052        WebResourceManager wrm = Framework.getService(WebResourceManager.class);
053        if (StringUtils.isBlank(type)) {
054            log.error(String.format("Cannot encode bundle with empty type at %s", component.getClientId()));
055            return;
056        }
057        if (!ResourceType.css.equals(type) && !ResourceType.js.equals(type) && !ResourceType.html.equals(type)) {
058            log.error(String.format("Unsupported type '%s' to encode bundle '%s' at %s", type, name,
059                    component.getClientId()));
060            return;
061        }
062        List<Resource> rs = wrm.getResources(new ResourceContextImpl(), name, type);
063        if (rs != null && !rs.isEmpty()) {
064            if (ResourceType.css.equals(type)) {
065                encodeEnd(context, component, ResourceType.css, BUNDLE_ENDPOINT_PATH + name + ".css");
066            } else if (ResourceType.js.equals(type)) {
067                encodeEnd(context, component, ResourceType.js, BUNDLE_ENDPOINT_PATH + name + ".js");
068            } else if (ResourceType.html.equals(type)) {
069                for (Resource r : rs) {
070                    encodeEnd(context, component, ResourceType.html, COMPONENTS_PATH + r.getPath());
071                }
072            }
073        }
074        super.encodeEnd(context, component);
075    }
076
077    protected void encodeEnd(FacesContext context, UIComponent component, ResourceType type, String base)
078            throws IOException {
079        String url = resolveNuxeoResourceUrl(context, component, base);
080        ResponseWriter writer = context.getResponseWriter();
081        if (ResourceType.css.equals(type)) {
082            writer.startElement("link", component);
083            writer.writeAttribute("type", "text/css", "type");
084            writer.writeAttribute("rel", "stylesheet", "rel");
085            writer.writeURIAttribute("href", url, "href");
086            writer.endElement("link");
087        } else if (ResourceType.js.equals(type)) {
088            writer.startElement("script", component);
089            writer.writeAttribute("type", "text/javascript", "type");
090            writer.writeURIAttribute("src", url, "src");
091            writer.endElement("script");
092        } else if (ResourceType.html.equals(type)) {
093            writer.startElement("link", component);
094            writer.writeAttribute("rel", "import", "rel");
095            writer.writeURIAttribute("href", url, "href");
096            writer.endElement("link");
097        }
098    }
099
100    @Override
101    protected void startElement(ResponseWriter writer, UIComponent component) throws IOException {
102        // NOOP
103    }
104
105    @Override
106    protected void endElement(ResponseWriter writer) throws IOException {
107        // NOOP
108    }
109
110}