001 package de.deepamehta.core.impl;
002
003 import de.deepamehta.core.service.PluginInfo;
004 import de.deepamehta.core.util.JavaUtils;
005
006 import org.codehaus.jettison.json.JSONObject;
007 import org.codehaus.jettison.json.JSONException;
008
009 import org.osgi.framework.Bundle;
010
011 import java.util.ArrayList;
012 import java.util.Enumeration;
013 import java.util.List;
014 import java.util.logging.Logger;
015
016
017
018 class PluginInfoImpl implements PluginInfo {
019
020 // ------------------------------------------------------------------------------------------------------- Constants
021
022 private static final String PLUGIN_FILE = "/web/script/plugin.js";
023 private static final String PLUGIN_RENDERERS_PATH = "/web/script/renderers/";
024 private static final String PLUGIN_HELPER_PATH = "/web/script/helper/";
025 private static final String PLUGIN_STYLE_PATH = "/web/style/";
026
027 // ---------------------------------------------------------------------------------------------- Instance Variables
028
029 private Bundle pluginBundle;
030 private JSONObject pluginInfo = new JSONObject();
031
032 private Logger logger = Logger.getLogger(getClass().getName());
033
034 // ---------------------------------------------------------------------------------------------------- Constructors
035
036 PluginInfoImpl(String pluginUri, Bundle pluginBundle) {
037 this.pluginBundle = pluginBundle;
038 try {
039 pluginInfo.put("plugin_uri", pluginUri);
040 pluginInfo.put("has_plugin_file", hasPluginFile());
041 pluginInfo.put("stylesheets", getStylesheets());
042 pluginInfo.put("renderers", getRenderers());
043 pluginInfo.put("helper", getHelper());
044 } catch (Exception e) {
045 throw new RuntimeException("Serialization failed (" + this + ")", e);
046 }
047 }
048
049 // -------------------------------------------------------------------------------------------------- Public Methods
050
051 @Override
052 public JSONObject toJSON() {
053 return pluginInfo;
054 }
055
056 // ------------------------------------------------------------------------------------------------- Private Methods
057
058 private boolean hasPluginFile() {
059 return pluginBundle.getEntry(PLUGIN_FILE) != null;
060 }
061
062 private List<String> getStylesheets() {
063 return getFilenames(PLUGIN_STYLE_PATH);
064 }
065
066 private JSONObject getRenderers() throws JSONException {
067 JSONObject renderers = new JSONObject();
068 renderers.put("page_renderers", getRenderers("page_renderers"));
069 renderers.put("simple_renderers", getRenderers("simple_renderers"));
070 renderers.put("multi_renderers", getRenderers("multi_renderers"));
071 // ### TODO: renderers.put("topicmap_renderers", getRenderers("topicmap_renderers"));
072 return renderers;
073 }
074
075 private List<String> getHelper() {
076 return getFilenames(PLUGIN_HELPER_PATH);
077 }
078
079 // ---
080
081 private List<String> getRenderers(String renderersDir) {
082 return getFilenames(PLUGIN_RENDERERS_PATH + renderersDir);
083 }
084
085 private List<String> getFilenames(String path) {
086 List<String> filenames = new ArrayList();
087 Enumeration<String> e = pluginBundle.getEntryPaths(path);
088 if (e != null) {
089 while (e.hasMoreElements()) {
090 String entryPath = e.nextElement();
091 // ignore directories ### TODO: to be dropped? Use helper/ instead? See Webclient page_renderers
092 if (entryPath.endsWith("/")) {
093 continue;
094 }
095 //
096 filenames.add(JavaUtils.getFilename(entryPath));
097 }
098 }
099 return filenames;
100 }
101 }