org.lunifera.runtime.web.ecview.presentation.vaadin.tests.ui.ECViewTestsUI.java Source code

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Here is the source code for org.lunifera.runtime.web.ecview.presentation.vaadin.tests.ui.ECViewTestsUI.java

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/**
 * Copyright (c) 2011 - 2014, Lunifera GmbH (Gross Enzersdorf), Loetz KG (Heidelberg)
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: 
 *       Florian Pirchner - Initial implementation
 */
package org.lunifera.runtime.web.ecview.presentation.vaadin.tests.ui;

import org.eclipse.core.databinding.observable.Realm;
import org.lunifera.runtime.web.vaadin.databinding.VaadinObservables;

import com.vaadin.annotations.Theme;
import com.vaadin.server.Page;
import com.vaadin.server.Page.UriFragmentChangedEvent;
import com.vaadin.server.VaadinRequest;
import com.vaadin.ui.Component;
import com.vaadin.ui.CssLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.themes.Reindeer;

@SuppressWarnings("serial")
@Theme(Reindeer.THEME_NAME)
public class ECViewTestsUI extends UI {

    private static final String SAMPLE_PACKAGE = "org.lunifera.runtime.web.ecview.presentation.vaadin.tests.ui.samples";
    private VerticalLayout layout;

    @Override
    protected void init(VaadinRequest request) {
        layout = new VerticalLayout();
        layout.setSizeFull();
        layout.setMargin(true);
        layout.setSpacing(true);
        setContent(layout);

        layout.addComponent(new Label("Insert URL fragment to open testclass"));

        getPage().addUriFragmentChangedListener(new Page.UriFragmentChangedListener() {
            @Override
            public void uriFragmentChanged(final UriFragmentChangedEvent event) {
                getUI().accessSynchronously(new Runnable() {
                    @Override
                    public void run() {
                        VaadinObservables.getRealm(getUI());
                        String fragment = event.getUriFragment();
                        handleFragment(SAMPLE_PACKAGE + "." + fragment);
                    }
                });
            }
        });
    }

    protected void handleFragment(String className) {
        try {
            Class<?> clazz = Activator.getContext().getBundle().loadClass(className);
            if (Component.class.isAssignableFrom(clazz)) {
                layout.removeAllComponents();

                Component component = (Component) clazz.newInstance();
                component.setSizeFull();
                layout.addComponent(component);
            } else {
                handleError(className);
            }
        } catch (ClassNotFoundException e) {
            handleError(className);
        } catch (InstantiationException e) {
            handleError(className);
        } catch (IllegalAccessException e) {
            handleError(className);
        }
    }

    private void handleError(String clazzname) {
        layout.removeAllComponents();
        layout.addComponent(new Label(clazzname + " is not a valid test sample!"));
    }
}