com.vaadin.server.LegacyApplication Maven / Gradle / Ivy
/*
* Copyright (C) 2000-2024 Vaadin Ltd
*
* This program is available under Vaadin Commercial License and Service Terms.
*
* See for the full
* license.
*/
package com.vaadin.server;
import java.net.URL;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import com.vaadin.ui.LegacyWindow;
import com.vaadin.ui.UI;
/**
* A special application designed to help migrating applications from Vaadin 6
* to Vaadin 7. The legacy application supports setting a main window, adding
* additional browser level windows and defining the theme for the entire
* application.
*
* @deprecated As of 7.0. This class is only intended to ease migration and
* should not be used for new projects.
*
* @since 7.0
*/
@Deprecated
public abstract class LegacyApplication implements ErrorHandler {
private LegacyWindow mainWindow;
private String theme = "reindeer";
private final Map legacyUINames = new HashMap<>();
private boolean isRunning = true;
/**
* URL where the user is redirected to on application close, or null if
* application is just closed without redirection.
*/
private String logoutURL = null;
private URL url;
/**
* Sets the main window of this application. Setting window as a main window
* of this application also adds the window to this application.
*
* @param mainWindow
* the UI to set as the default window
*/
public void setMainWindow(LegacyWindow mainWindow) {
if (this.mainWindow != null) {
throw new IllegalStateException("mainWindow has already been set");
}
if (mainWindow.isAttached()) {
throw new IllegalStateException(
"mainWindow is attached to another application");
}
if (UI.getCurrent() == null) {
// Assume setting a main window from Application.init if there's
// no current UI -> set the main window as the current UI
UI.setCurrent(mainWindow);
}
addWindow(mainWindow);
this.mainWindow = mainWindow;
}
public void doInit(URL url) {
this.url = url;
VaadinSession.getCurrent().setErrorHandler(this);
init();
}
protected abstract void init();
/**
* Gets the mainWindow of the application.
*
*
* The main window is the window attached to the application URL (
* {@link #getURL()}) and thus which is show by default to the user.
*
*
* Note that each application must have at least one main window.
*
*
* @return the UI used as the default window
*/
public LegacyWindow getMainWindow() {
return mainWindow;
}
/**
* Sets the application's theme.
*
* The default theme for {@link LegacyApplication} is reindeer, unlike for
* {@link UI} the default theme is valo.
*
*
* @param theme
* the new theme for this application.
*/
public void setTheme(String theme) {
this.theme = theme;
}
/**
* Gets the application's theme. The application's theme is the default
* theme used by all the uIs for which a theme is not explicitly defined. If
* the application theme is not explicitly set, null is
* returned.
*
* @return the name of the application's theme.
*/
public String getTheme() {
return theme;
}
/**
*
* Gets a UI by name. Returns null if the application is not
* running or it does not contain a window corresponding to the name.
*
*
* @param name
* the name of the requested window
* @return a UI corresponding to the name, or null to use the
* default window
*/
public LegacyWindow getWindow(String name) {
return legacyUINames.get(name);
}
/**
* Counter to get unique names for windows with no explicit name
*/
private int namelessUIIndex = 0;
/**
* Adds a new browser level window to this application.
*
* @param uI
* the UI window to add to the application
*/
public void addWindow(LegacyWindow uI) {
if (uI.getName() == null) {
String name = Integer.toString(namelessUIIndex++);
uI.setName(name);
}
uI.setApplication(this);
legacyUINames.put(uI.getName(), uI);
uI.setSession(VaadinSession.getCurrent());
}
/**
* Removes the specified window from the application. This also removes all
* name mappings for the window (see {@link #addWindow(LegacyWindow)} and
* #getWindowName(UI)}.
*
*
* Note that removing window from the application does not close the browser
* window - the window is only removed from the server-side.
*
*
* @param uI
* the UI to remove
*/
public void removeWindow(LegacyWindow uI) {
for (Entry entry : legacyUINames.entrySet()) {
if (entry.getValue() == uI) {
legacyUINames.remove(entry.getKey());
}
}
}
/**
* Gets the set of windows contained by the application.
*
*
* Note that the returned set of windows can not be modified.
*
*
* @return the unmodifiable collection of windows.
*/
public Collection getWindows() {
return Collections.unmodifiableCollection(legacyUINames.values());
}
@Override
public void error(ErrorEvent event) {
DefaultErrorHandler.doDefault(event);
}
public VaadinSession getContext() {
return VaadinSession.getCurrent();
}
public void close() {
isRunning = false;
Collection windows = getWindows();
for (LegacyWindow legacyWindow : windows) {
String logoutUrl = getLogoutURL();
if (logoutUrl == null) {
URL url = getURL();
if (url != null) {
logoutUrl = url.toString();
}
}
if (logoutUrl != null) {
legacyWindow.getPage().setLocation(logoutUrl);
}
legacyWindow.close();
}
}
public boolean isRunning() {
return isRunning;
}
public URL getURL() {
return url;
}
/**
* Returns the URL user is redirected to on application close. If the URL is
* null, the application is closed normally as defined by the
* application running environment.
*
* Desktop application just closes the application window and
* web-application redirects the browser to application main URL.
*
*
* @return the URL.
*/
public String getLogoutURL() {
return logoutURL;
}
/**
* Sets the URL user is redirected to on application close. If the URL is
* null, the application is closed normally as defined by the
* application running environment: Desktop application just closes the
* application window and web-application redirects the browser to
* application main URL.
*
* @param logoutURL
* the logoutURL to set.
*/
public void setLogoutURL(String logoutURL) {
this.logoutURL = logoutURL;
}
}