de.uni_koeln.spinfo.maalr.webapp.ui.admin.client.Admin.java Source code

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/*******************************************************************************
 * Copyright 2013 Sprachliche Informationsverarbeitung, University of Cologne
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package de.uni_koeln.spinfo.maalr.webapp.ui.admin.client;

import java.util.HashMap;
import java.util.Map;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.shared.GWT;
import com.google.gwt.dom.client.Style.Overflow;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.user.client.History;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.RootLayoutPanel;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.SimplePanel;

import de.uni_koeln.spinfo.maalr.common.shared.ClientOptions;
import de.uni_koeln.spinfo.maalr.webapp.ui.admin.client.general.BackendService;
import de.uni_koeln.spinfo.maalr.webapp.ui.admin.client.general.BackendServiceAsync;
import de.uni_koeln.spinfo.maalr.webapp.ui.admin.client.general.DbManager;
import de.uni_koeln.spinfo.maalr.webapp.ui.admin.client.user.RoleEditor;
import de.uni_koeln.spinfo.maalr.webapp.ui.common.client.CommonService;
import de.uni_koeln.spinfo.maalr.webapp.ui.common.client.CommonServiceAsync;
import de.uni_koeln.spinfo.maalr.webapp.ui.common.client.ConfigService;
import de.uni_koeln.spinfo.maalr.webapp.ui.common.client.ConfigServiceAsync;
import de.uni_koeln.spinfo.maalr.webapp.ui.common.client.ConfigUtility;
import de.uni_koeln.spinfo.maalr.webapp.ui.common.client.Navigation;
import de.uni_koeln.spinfo.maalr.webapp.ui.common.client.util.SimpleWebLogger;
import de.uni_koeln.spinfo.maalr.webapp.ui.common.shared.util.Logger;

public class Admin implements EntryPoint {

    private SimplePanel panel;
    private Map<String, Composite> modules = new HashMap<String, Composite>();
    private static ClientOptions options;

    private String contextPath;

    public void showModule(Composite module) {
        panel.setWidget(module);
    }

    /**
     * This is the entry point method.
     */
    public void onModuleLoad() {
        final RootPanel panel = RootPanel.get("navigation");
        panel.clear();
        final Navigation navigation = new Navigation();

        ConfigUtility.getContextPath(new AsyncCallback<String>() {

            @Override
            public void onFailure(Throwable arg0) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onSuccess(String context) {
                contextPath = context;

            }
        });
        SimpleWebLogger.log("contextPath: " + contextPath);

        CommonServiceAsync service = GWT.create(CommonService.class);
        service.getClientOptions(new AsyncCallback<ClientOptions>() {

            @Override
            public void onSuccess(ClientOptions result) {
                options = result;
                navigation.setAppName(options.getShortAppName() + " - Admin Backend");
                panel.add(navigation);
                initializeMainPanel();
                initHistory();
                initModules(navigation);
                Logger.getLogger(getClass()).info("Admin module has been loaded!!!");
                if (History.getToken().isEmpty()) {
                    History.newItem(Modules.ANCHOR_DB_MANAGER);
                }
                History.fireCurrentHistoryState();
            }

            @Override
            public void onFailure(Throwable caught) {
                // TODO Auto-generated method stub
            }
        });

    }

    private void initializeMainPanel() {
        RootLayoutPanel rootPanel = RootLayoutPanel.get();
        rootPanel.getElement().getStyle().setTop(5, Unit.EM);
        rootPanel.getElement().getStyle().setBottom(2, Unit.EM);
        panel = new SimplePanel();
        panel.getElement().getStyle().setOverflow(Overflow.SCROLL);
        rootPanel.add(panel);
    }

    private void initModules(Navigation navigation) {
        RoleEditor roleEditor = new RoleEditor();
        DbManager dbManager = new DbManager();
        registerModule(roleEditor, Modules.ANCHOR_ROLE_MANAGER);
        registerModule(dbManager, Modules.ANCHOR_DB_MANAGER);
        navigation.addLinkLeft("Role Manager", "#" + Modules.ANCHOR_ROLE_MANAGER);
        navigation.addLinkLeft("DB Manager", "#" + Modules.ANCHOR_DB_MANAGER);
        navigation.addLinkLeft("Logout", contextPath + "/j_spring_security_logout");
    }

    private void initHistory() {
        History.addValueChangeHandler(new ValueChangeHandler<String>() {
            public void onValueChange(ValueChangeEvent<String> event) {
                String historyToken = event.getValue();
                if (historyToken.trim().length() == 0) {
                    showModule(modules.get(Modules.ANCHOR_DB_MANAGER));
                } else {
                    showModule(modules.get(historyToken));
                }
            }
        });
    }

    private void registerModule(Composite composite, String key) {
        modules.put(key, composite);
    }

}