adminconsole.java

基于Jabber协议的即时消息服务器

        }
        catch (Exception ignored) {
            // Ignore.
        }

        // Load other admin-sidebar.xml files from the classpath
        ClassLoader[] classLoaders = getClassLoaders();
        for (int i=0; i<classLoaders.length; i++) {
            URL url = null;
            try {
                if (classLoaders[i] != null) {
                    Enumeration e = classLoaders[i].getResources("/META-INF/admin-sidebar.xml");
                    while (e.hasMoreElements()) {
                        url = (URL)e.nextElement();
                        try {
                            in = url.openStream();
                            addModel("admin", in);
                        }
                        finally {
                            try { if (in != null) { in.close(); } }
                            catch (Exception ignored) {
                                // Ignore.
                            }
                        }
                    }
                }
            }
            catch (Exception e) {
                String msg = "Failed to load admin-sidebar.xml";
                if (url != null) {
                    msg += " from resource: " + url.toString();
                }
                Log.warn(msg, e);
            }
        }
        rebuildModel();
    }

    /**
     * Rebuilds the generated model.
     */
    private static synchronized void rebuildModel() {
        Document doc = DocumentFactory.getInstance().createDocument();
        generatedModel = coreModel.createCopy();
        doc.add(generatedModel);

        // Add in all overrides.
        for (Element element : overrideModels.values()) {
            // See if global settings are overriden.
            Element appName = (Element)element.selectSingleNode("//adminconsole/global/appname");
            if (appName != null) {
                Element existingAppName = (Element)generatedModel.selectSingleNode(
                        "//adminconsole/global/appname");
                existingAppName.setText(appName.getText());
                if (appName.attributeValue("plugin") != null) {
                    existingAppName.addAttribute("plugin", appName.attributeValue("plugin"));
                }
            }
            Element appLogoImage = (Element)element.selectSingleNode("//adminconsole/global/logo-image");
            if (appLogoImage != null) {
                Element existingLogoImage = (Element)generatedModel.selectSingleNode(
                        "//adminconsole/global/logo-image");
                existingLogoImage.setText(appLogoImage.getText());
                if (appLogoImage.attributeValue("plugin") != null) {
                    existingLogoImage.addAttribute("plugin", appLogoImage.attributeValue("plugin"));
                }
            }
            Element appLoginImage = (Element)element.selectSingleNode("//adminconsole/global/login-image");
            if (appLoginImage != null) {
                Element existingLoginImage = (Element)generatedModel.selectSingleNode(
                        "//adminconsole/global/login-image");
                existingLoginImage.setText(appLoginImage.getText());
                if (appLoginImage.attributeValue("plugin") != null) {
                    existingLoginImage.addAttribute("plugin", appLoginImage.attributeValue("plugin"));
                }
            }
            Element appVersion = (Element)element.selectSingleNode("//adminconsole/global/version");
            if (appVersion != null) {
                Element existingVersion = (Element)generatedModel.selectSingleNode(
                        "//adminconsole/global/version");
                if (existingVersion != null) {
                    existingVersion.setText(appVersion.getText());
                    if (appVersion.attributeValue("plugin") != null) {
                        existingVersion.addAttribute("plugin", appVersion.attributeValue("plugin"));
                    }
                }
                else {
                    ((Element)generatedModel.selectSingleNode(
                            "//adminconsole/global")).add(appVersion.createCopy());
                }
            }
            // Tabs
            for (Iterator i=element.selectNodes("//tab").iterator(); i.hasNext(); ) {
                Element tab = (Element)i.next();
                String id = tab.attributeValue("id");
                Element existingTab = getElemnetByID(id);
                // Simple case, there is no existing tab with the same id.
                if (existingTab == null) {
                    // Make sure that the URL on the tab is set. If not, default to the
                    // url of the first item.
                    if (tab.attributeValue("url") == null) {
                        Element firstItem = (Element)tab.selectSingleNode(
                                "//item[@url]");
                        if (firstItem != null) {
                            tab.addAttribute("url", firstItem.attributeValue("url"));
                        }
                    }
                    generatedModel.add(tab.createCopy());
                }
                // More complex case -- a tab with the same id already exists.
                // In this case, we have to overrite only the difference between
                // the two elements.
                else {
                    overrideTab(existingTab, tab);
                }
            }
        }

        // Special case: show an informational tab about Wildfire Enterprise if Enterprise
        // is not installed and if the user has not chosen to hide tab.
        PluginManager pluginManager = XMPPServer.getInstance().getPluginManager();
        boolean pluginExists = pluginManager != null && pluginManager.isPluginDownloaded(
                "enterprise.jar");
        if (!pluginExists && JiveGlobals.getBooleanProperty("enterpriseInfoEnabled", true)) {
            Element enterprise = generatedModel.addElement("tab");
            enterprise.addAttribute("id", "tab-enterprise");
            enterprise.addAttribute("name", "Enterprise");
            enterprise.addAttribute("url", "enterprise-info.jsp");
            enterprise.addAttribute("description", "Click for Enterprise information.");
            Element sidebar = enterprise.addElement("sidebar");
            sidebar.addAttribute("id", "sidebar-enterprise-info");
            sidebar.addAttribute("name", "Wildfire Enterprise");
            Element item = sidebar.addElement("item");
            item.addAttribute("id", "enterprise-info");
            item.addAttribute("name", "Try Enterprise");
            item.addAttribute("url", "enterprise-info.jsp");
            item.addAttribute("description", "Wildfire Enterprise overview inforation");
        }
    }

    private static void overrideTab(Element tab, Element overrideTab) {
        // Override name, url, description.
        if (overrideTab.attributeValue("name") != null) {
            tab.addAttribute("name", overrideTab.attributeValue("name"));
        }
        if (overrideTab.attributeValue("url") != null) {
            tab.addAttribute("url", overrideTab.attributeValue("url"));
        }
        if (overrideTab.attributeValue("description") != null) {
            tab.addAttribute("description", overrideTab.attributeValue("description"));
        }
        if (overrideTab.attributeValue("plugin") != null) {
            tab.addAttribute("plugin", overrideTab.attributeValue("plugin"));
        }
        // Override sidebar items.
        for (Iterator i=overrideTab.elementIterator(); i.hasNext(); ) {
            Element sidebar = (Element)i.next();
            String id = sidebar.attributeValue("id");
            Element existingSidebar = getElemnetByID(id);
            // Simple case, there is no existing sidebar with the same id.
            if (existingSidebar == null) {
                tab.add(sidebar.createCopy());
            }
            // More complex case -- a sidebar with the same id already exists.
            // In this case, we have to overrite only the difference between
            // the two elements.
            else {
                overrideSidebar(existingSidebar, sidebar);
            }
        }
    }

    private static void overrideSidebar(Element sidebar, Element overrideSidebar) {
        // Override name.
        if (overrideSidebar.attributeValue("name") != null) {
            sidebar.addAttribute("name", overrideSidebar.attributeValue("name"));
        }
        if (overrideSidebar.attributeValue("plugin") != null) {
            sidebar.addAttribute("plugin", overrideSidebar.attributeValue("plugin"));
        }
        // Override entries.
        for (Iterator i=overrideSidebar.elementIterator(); i.hasNext(); ) {
            Element entry = (Element)i.next();
            String id = entry.attributeValue("id");
            Element existingEntry = getElemnetByID(id);
            // Simple case, there is no existing sidebar with the same id.
            if (existingEntry == null) {
                sidebar.add(entry.createCopy());
            }
            // More complex case -- an entry with the same id already exists.
            // In this case, we have to overrite only the difference between
            // the two elements.
            else {
                overrideEntry(existingEntry, entry);
            }
        }
    }

    private static void overrideEntry(Element entry, Element overrideEntry) {
        // Override name.
        if (overrideEntry.attributeValue("name") != null) {
            entry.addAttribute("name", overrideEntry.attributeValue("name"));
        }
        if (overrideEntry.attributeValue("url") != null) {
            entry.addAttribute("url", overrideEntry.attributeValue("url"));
        }
        if (overrideEntry.attributeValue("description") != null) {
            entry.addAttribute("description", overrideEntry.attributeValue("description"));
        }
        if (overrideEntry.attributeValue("plugin") != null) {
            entry.addAttribute("plugin", overrideEntry.attributeValue("plugin"));
        }
        // Override any sidebars contained in the entry.
        for (Iterator i=overrideEntry.elementIterator(); i.hasNext(); ) {
            Element sidebar = (Element)i.next();
            String id = sidebar.attributeValue("id");
            Element existingSidebar = getElemnetByID(id);
            // Simple case, there is no existing sidebar with the same id.
            if (existingSidebar == null) {
                entry.add(sidebar.createCopy());
            }
            // More complex case -- a sidebar with the same id already exists.
            // In this case, we have to overrite only the difference between
            // the two elements.
            else {
                overrideSidebar(existingSidebar, sidebar);
            }
        }
    }

    /**
     * Returns an array of class loaders to load resources from.
     *
     * @return an array of class loaders to load resources from.
     */
    private static ClassLoader[] getClassLoaders() {
        ClassLoader[] classLoaders = new ClassLoader[3];
        classLoaders[0] = AdminConsole.class.getClass().getClassLoader();
        classLoaders[1] = Thread.currentThread().getContextClassLoader();
        classLoaders[2] = ClassLoader.getSystemClassLoader();
        return classLoaders;
    }
}