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package com.itmill.toolkit.demo;
//
// Millstone imports were replaced
//
// import org.millstone.base.Application;
// import org.millstone.base.ui.*;
// import org.millstone.base.data.*;
//
import com.itmill.toolkit.Application;
import com.itmill.toolkit.data.Property;
import com.itmill.toolkit.ui.*;
/**
* <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 IT Mill Ltd.
*/
public class UpgradingSample extends Application implements
Property.ValueChangeListener {
/* Menu for navigating inside the application. */
private Tree menu = new Tree();
/* Contents of the website */
private 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 GridLayout layout = new GridLayout(2, 1);
/* Initialize the application */
public void init() {
// Create the main window of the application
Window main = new Window("Login example", layout);
setMainWindow(main);
// Add menu and loginbox to the application
OrderedLayout l = new OrderedLayout();
layout.addComponent(l, 0, 0);
l.addComponent(menu);
l.addComponent(new LoginBox());
// Setup menu
menu.setStyle("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
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
public void valueChange(Property.ValueChangeEvent event) {
layout.removeComponent(1, 0);
String title = (String) menu.getValue();
for (int i = 0; i < pages.length; i++)
if (pages[i][0].equals(title)) {
Panel p = new Panel(pages[i][0]);
p.addComponent(new Label(pages[i][1]));
p.setStyle("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 TextField loginName = new TextField("Name");
private Button loginButton = new Button("Enter", this, "login");
private Panel loginPanel = new Panel("Login");
private Panel statusPanel = new Panel();
private Button logoutButton = new Button("Logout",
UpgradingSample.this, "close");
private Label statusLabel = new Label();
// Initialize login component
public LoginBox() {
// Initialize the component
loginPanel.addComponent(loginName);
loginPanel.addComponent(loginButton);
loginPanel.setStyle("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() {
String name = (String) loginName.getValue();
if (name != null && name.length() > 0)
setUser(name);
loginName.setValue("");
}
// Update login status on application user change events
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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