com.github.wolfie.sessionguard.SessionguardApplication.java Source code

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Here is the source code for com.github.wolfie.sessionguard.SessionguardApplication.java

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// Copyright 2010 Henrik Paul
//
// 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 com.github.wolfie.sessionguard;

import com.vaadin.Application;
import com.vaadin.data.Property;
import com.vaadin.data.Property.ValueChangeEvent;
import com.vaadin.terminal.gwt.server.WebApplicationContext;
import com.vaadin.ui.Button;
import com.vaadin.ui.Label;
import com.vaadin.ui.TextField;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;
import com.vaadin.ui.Button.ClickEvent;

public class SessionguardApplication extends Application {
    private static final long serialVersionUID = -1544094538751229767L;

    private static final int WARNING_PERIOD_MINS = 2;

    @Override
    public void init() {
        final VerticalLayout mainLayout = new VerticalLayout();
        mainLayout.setSpacing(true);
        final Window mainWindow = new Window("Sessionguard Application", mainLayout);

        final int sessionTimeout = ((WebApplicationContext) getContext()).getHttpSession().getMaxInactiveInterval()
                / 60;

        final Label label = new Label(
                "This application has a " + sessionTimeout + "-minute session, with a timeout warning of "
                        + WARNING_PERIOD_MINS + " minutes session time left.");
        mainWindow.addComponent(label);
        setMainWindow(mainWindow);
        final SessionGuard sessionGuard = new SessionGuard();
        sessionGuard.setTimeoutWarningPeriod(WARNING_PERIOD_MINS);
        mainWindow.addComponent(sessionGuard);

        mainWindow.addComponent(new Button("Switch to keepalive", new Button.ClickListener() {
            private static final long serialVersionUID = -4423285632350279761L;
            private boolean keepalive = false;

            public void buttonClick(final ClickEvent event) {
                keepalive = !keepalive;
                sessionGuard.setKeepalive(keepalive);
                event.getButton().setCaption(keepalive ? "Switch to timeout message" : "Switch to keepalive");
            }
        }));

        final TextField warningXhtmlField = new TextField("Change warning XHTML");
        warningXhtmlField.setWidth("100%");
        warningXhtmlField.setValue(sessionGuard.getTimeoutWarningXHTML());
        warningXhtmlField.setImmediate(true);
        warningXhtmlField.addListener(new Property.ValueChangeListener() {
            private static final long serialVersionUID = -5236596836421389890L;

            public void valueChange(final ValueChangeEvent event) {
                sessionGuard.setTimeoutWarningXHTML((String) warningXhtmlField.getValue());
                getMainWindow().showNotification("Warning string changed");
            }
        });
        mainWindow.addComponent(warningXhtmlField);

    }
}