org.aksw.autosparql.tbsl.gui.vaadin.TBSLApplication.java Source code

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Here is the source code for org.aksw.autosparql.tbsl.gui.vaadin.TBSLApplication.java

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/*
 * Copyright 2009 IT Mill Ltd.
 *
 * 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 org.aksw.autosparql.tbsl.gui.vaadin;

import java.util.Map;
import org.aksw.autosparql.tbsl.gui.vaadin.util.URLParameters;
import org.aksw.autosparql.tbsl.gui.vaadin.view.MainView;
import org.vaadin.appfoundation.authentication.SessionHandler;
import org.vaadin.appfoundation.authorization.Permissions;
import org.vaadin.appfoundation.authorization.jpa.JPAPermissionManager;
import org.vaadin.appfoundation.view.ViewHandler;
import com.vaadin.Application;
import com.vaadin.event.Action;
import com.vaadin.event.ShortcutAction;
import com.vaadin.terminal.ParameterHandler;
import com.vaadin.terminal.Terminal;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;
import com.vaadin.ui.Window.CloseEvent;

/**
 * The Application's "main" class
 */
@SuppressWarnings("serial")
public class TBSLApplication extends Application implements ParameterHandler {
    private MainView mainView;

    Action action_query = new ShortcutAction("Ctrl+Q", ShortcutAction.KeyCode.Q,
            new int[] { ShortcutAction.ModifierKey.CTRL });

    private String endpoint;
    private String question;

    @Override
    public void init() {
        // Create the application data instance
        UserSession sessionData = new UserSession(this);
        // Register it as a listener in the application context
        getContext().addTransactionListener(sessionData);

        setTheme("custom");

        ViewHandler.initialize(this);
        SessionHandler.initialize(this);
        Permissions.initialize(this, new JPAPermissionManager());

        Window mainWindow = new Window("AutoSPARQL TBSL");
        mainWindow.addParameterHandler(this);
        setMainWindow(mainWindow);

        mainView = new MainView();
        mainWindow.setContent(mainView);
        mainWindow.setSizeFull();

        setLogoutURL("http://aksw.org");

        mainWindow.addActionHandler(new Action.Handler() {

            @Override
            public void handleAction(Action action, Object sender, Object target) {
                if (action == action_query) {
                    onShowLearnedQuery();
                }

            }

            @Override
            public Action[] getActions(Object target, Object sender) {
                return new Action[] { action_query };
            }
        });

    }

    private void onShowLearnedQuery() {
        String learnedSPARQLQuery = UserSession.getManager().getLearnedSPARQLQuery();
        VerticalLayout layout = new VerticalLayout();
        final Window w = new Window("Learned SPARQL Query", layout);
        w.setWidth("300px");
        w.setSizeUndefined();
        w.setPositionX(200);
        w.setPositionY(100);
        getMainWindow().addWindow(w);
        w.addListener(new Window.CloseListener() {

            @Override
            public void windowClose(CloseEvent e) {
                getMainWindow().removeWindow(w);
            }
        });
        Label queryLabel = new Label(learnedSPARQLQuery, Label.CONTENT_PREFORMATTED);
        queryLabel.setWidth(null);
        layout.addComponent(queryLabel);

        Label nlLabel = new Label(UserSession.getManager().getNLRepresentation(learnedSPARQLQuery));
        layout.addComponent(nlLabel);

    }

    @Override
    public void terminalError(Terminal.ErrorEvent event) {
        // Call the default implementation.
        super.terminalError(event);

        // Some custom behaviour.
        //        if (getMainWindow() != null) {
        //            getMainWindow().showNotification(
        //                    "An unchecked exception occured!",
        //                    event.getThrowable().toString(),
        //                    Notification.TYPE_ERROR_MESSAGE);
        //        }
    }

    @Override
    public void handleParameters(Map<String, String[]> parameters) {
        String[] endpointArray = parameters.get(URLParameters.ENDPOINT);
        if (endpointArray != null && endpointArray.length == 1) {
            endpoint = endpointArray[0];
            System.out.println("URL param: " + endpoint);
        }
        String[] questionArray = parameters.get(URLParameters.QUESTION);
        if (questionArray != null && endpointArray.length == 1) {
            question = questionArray[0];
            System.out.println("URL param: " + question);
        }
        if (endpoint != null && question != null) {
            mainView.initWithParams(endpoint, question);
        }

    }

}