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/*
* Copyright 2011 Vaadin 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 com.vaadin.tests;
//
// Millstone imports were replaced
//
// import org.millstone.base.Application;
// import org.millstone.base.ui.*;
// import org.millstone.base.data.*;
//
import com.vaadin.Application;
import com.vaadin.data.Property;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.GridLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Panel;
import com.vaadin.ui.UI.LegacyWindow;
import com.vaadin.ui.TextField;
import com.vaadin.ui.Tree;
import com.vaadin.ui.VerticalLayout;
/**
* <p>
* Example application demonstrating simple user login. This example is from
* MillStone 3.1.1 examples section. Upgrading from 3.1.1 to 4.0.0 was done by
* updating imports, also setTheme("corporate") call was added to application
* init method.
* </p>
*
* @since 3.1.1
* @author Vaadin Ltd.
*/
public class UpgradingSample extends Application.LegacyApplication implements
Property.ValueChangeListener {
/* Menu for navigating inside the application. */
private final Tree menu = new Tree();
/* Contents of the website */
private final String[][] pages = {
{ "Welcome", "Welcome to our website..." },
{ "Products", "Public product information." },
{ "Contact", "Public contact information." },
{ "CRM", "CRM Database requiring login." },
{ "Intranet", "Internal information database." } };
/* Application layout */
private final GridLayout layout = new GridLayout(2, 1);
/* Initialize the application */
@Override
public void init() {
// Create the main window of the application
final LegacyWindow main = new LegacyWindow("Login example", layout);
setMainWindow(main);
// Add menu and loginbox to the application
final VerticalLayout l = new VerticalLayout();
layout.addComponent(l, 0, 0);
l.addComponent(menu);
l.addComponent(new LoginBox());
// Setup menu
menu.setStyleName("menu");
menu.addListener(this);
menu.setImmediate(true);
addToMenu(new String[] { "Welcome", "Products", "Contact" });
}
// Overriding usetUser method is a simple way of updating application
// privileges when the user is changed
@Override
public void setUser(Object user) {
super.setUser(user);
if (user != null) {
addToMenu(new String[] { "CRM", "Intranet" });
}
}
public void addToMenu(String[] items) {
for (int i = 0; i < items.length; i++) {
menu.addItem(items[i]);
menu.setChildrenAllowed(items[i], false);
}
if (menu.getValue() == null) {
menu.setValue(items[0]);
}
}
// Handle menu selection and update visible page
@Override
public void valueChange(Property.ValueChangeEvent event) {
layout.removeComponent(1, 0);
final String title = (String) menu.getValue();
for (int i = 0; i < pages.length; i++) {
if (pages[i][0].equals(title)) {
final Panel p = new Panel(pages[i][0]);
p.addComponent(new Label(pages[i][1]));
p.setStyleName("strong");
layout.addComponent(p, 1, 0);
}
}
}
// Simple loginbox component for the application
public class LoginBox extends CustomComponent implements
Application.UserChangeListener {
// The components this loginbox is composed of
private final TextField loginName = new TextField("Name");
private final Button loginButton = new Button("Enter",
new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
login();
}
});
private final Panel loginPanel = new Panel("Login");
private final Panel statusPanel = new Panel();
private final Button logoutButton = new Button("Logout",
new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
close();
}
});
private final Label statusLabel = new Label();
// Initialize login component
public LoginBox() {
// Initialize the component
loginPanel.addComponent(loginName);
loginPanel.addComponent(loginButton);
loginPanel.setStyleName("strong");
loginName.setColumns(8);
statusPanel.addComponent(statusLabel);
statusPanel.addComponent(logoutButton);
// Set the status of the loginbox and show correct
// components
updateStatus();
// Listen application user change events
UpgradingSample.this.addListener(this);
}
// Login into application
public void login() {
final String name = loginName.getValue();
if (name != null && name.length() > 0) {
setUser(name);
}
loginName.setValue("");
}
// Update login status on application user change events
@Override
public void applicationUserChanged(Application.UserChangeEvent event) {
updateStatus();
}
// Update login status of the component by exposing correct
// components
private void updateStatus() {
statusLabel.setValue("User: " + getUser());
if (getUser() != null) {
setCompositionRoot(statusPanel);
} else {
setCompositionRoot(loginPanel);
}
}
}
}
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