Examples of com.vaadin.Application

com.vaadin.Application

Base class required for all Vaadin applications. This class provides all the basic services required by Vaadin. These services allow external discovery and manipulation of the user, {@link com.vaadin.ui.Window windows} andthemes, and starting and stopping the application.

As mentioned, all Vaadin applications must inherit this class. However, this is almost all of what one needs to do to create a fully functional application. The only thing a class inheriting the Application needs to do is implement the init method where it creates the windows it needs to perform its function. Note that all applications must have at least one window: the main window. The first unnamed window constructed by an application automatically becomes the main window which behaves just like other windows with one exception: when accessing windows using URLs the main window corresponds to the application URL whereas other windows correspond to a URL gotten by catenating the window's name to the application URL.

See the class com.vaadin.demo.HelloWorld for a simple example of a fully working application.

Window access. Application provides methods to list, add and remove the windows it contains.

Execution control. This class includes method to start and finish the execution of the application. Being finished means basically that no windows will be available from the application anymore.

Theme selection. The theme selection process allows a theme to be specified at three different levels. When a window's theme needs to be found out, the window itself is queried for a preferred theme. If the window does not prefer a specific theme, the application containing the window is queried. If neither the application prefers a theme, the default theme for the {@link com.vaadin.terminal.Terminal terminal} is used. The terminalalways defines a default theme.
@author IT Mill Ltd. @version 6.7.1 @since 3.0

        }
    }


    private Application createApplication(PortletRequest request)
            throws PortletException, MalformedURLException {
        Application newApplication = getNewApplication(request);
        final PortletApplicationContext2 context = getApplicationContext(request
                .getPortletSession());
        context.addApplication(newApplication, request.getWindowID());
        return newApplication;
    }

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        if (session == null) {
            throw new SessionExpiredException();
        }


        PortletApplicationContext2 context = getApplicationContext(session);
        Application application = context.getApplicationForWindowId(request
                .getWindowID());
        if (application == null) {
            return null;
        }
        if (application.isRunning()) {
            return application;
        }
        // application found but not running
        context.removeApplication(application);

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            throws ClassNotFoundException;


    protected Application getNewApplication(PortletRequest request)
            throws PortletException {
        try {
            final Application application = getApplicationClass().newInstance();
            return application;
        } catch (final IllegalAccessException e) {
            throw new PortletException("getNewApplication failed", e);
        } catch (final InstantiationException e) {
            throw new PortletException("getNewApplication failed", e);

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            return locale;
        }
        if (parent != null) {
            return parent.getLocale();
        }
        final Application app = getApplication();
        if (app != null) {
            return app.getLocale();
        }
        return null;
    }

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    /**
     * Sets the focus for this component if the component is {@link Focusable}.
     */
    protected void focus() {
        if (this instanceof Focusable) {
            final Application app = getApplication();
            if (app != null) {
                getWindow().setFocusedComponent((Focusable) this);
                delayedFocus = false;
            } else {
                delayedFocus = true;

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        if (streamVariable == null) {
            throw new IllegalStateException(
                    "StreamVariable for the post not found");
        }


        final Application application = getApplication();


        OutputStream out = null;
        int totalBytes = 0;
        StreamingStartEventImpl startedEvent = new StreamingStartEventImpl(
                filename, type, contentLength);

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        if (value instanceof ExternalResource) {
            addAttribute(name, ((ExternalResource) value).getURL());


        } else if (value instanceof ApplicationResource) {
            final ApplicationResource r = (ApplicationResource) value;
            final Application a = r.getApplication();
            if (a == null) {
                throw new PaintException(
                        "Application not specified for resorce "
                                + value.getClass().getName());
            }
            final String uri = a.getRelativeLocation(r);
            addAttribute(name, uri);


        } else if (value instanceof ThemeResource) {
            final String uri = "theme://"
                    + ((ThemeResource) value).getResourceId();

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                out.print("<div>" + e + "</div>");
                ctx.setPortletApplication(this, null);
                return;
            }


            Application app = (Application) request
                    .getAttribute(Application.class.getName());
            ctx.setPortletApplication(this, app);
            ctx.firePortletRenderRequest(this, request, response);


        }

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            return locale;
        }
        if (parent != null) {
            return parent.getLocale();
        }
        final Application app = getApplication();
        if (app != null) {
            return app.getLocale();
        }
        return null;
    }

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     * (non-Javadoc)
     * 
     * @see com.vaadin.ui.Component.Focusable#focus()
     */
    public void focus() {
        final Application app = getApplication();
        if (app != null) {
            getWindow().setFocusedComponent(this);
            delayedFocus = false;
        } else {
            delayedFocus = true;

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com.googlecode.mcvaadin.helpers.UIBuilder

com.siemens.ct.osgi.vaadin.pm.main.MainApplication

com.vaadin.terminal.ApplicationResource

com.vaadin.terminal.DownloadStream

com.vaadin.terminal.gwt.server.AbstractApplicationPortlet

com.vaadin.terminal.gwt.server.AbstractApplicationServlet

com.vaadin.terminal.gwt.server.AbstractCommunicationManager

com.vaadin.terminal.gwt.server.AbstractWebApplicationContext

com.vaadin.terminal.gwt.server.ApplicationPortlet

com.vaadin.terminal.gwt.server.ApplicationRunnerServlet

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