package org.sigmah.client.ui.presenter;
/*
* #%L
* Sigmah
* %%
* Copyright (C) 2010 - 2016 URD
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/gpl-3.0.html>.
* #L%
*/
import org.sigmah.client.dispatch.CommandResultHandler;
import org.sigmah.client.inject.Injector;
import org.sigmah.client.page.Page;
import org.sigmah.client.page.PageRequest;
import org.sigmah.client.page.RequestParameter;
import org.sigmah.client.ui.presenter.base.AbstractPagePresenter;
import org.sigmah.client.ui.view.LoginView;
import org.sigmah.client.ui.view.base.ViewInterface;
import org.sigmah.client.ui.widget.button.Button;
import org.sigmah.client.util.ClientUtils;
import org.sigmah.shared.Language;
import org.sigmah.shared.command.LoginCommand;
import org.sigmah.shared.command.result.Authentication;
import com.allen_sauer.gwt.log.client.Log;
import com.extjs.gxt.ui.client.event.ButtonEvent;
import com.extjs.gxt.ui.client.event.Events;
import com.extjs.gxt.ui.client.event.SelectionListener;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.HasClickHandlers;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyDownEvent;
import com.google.gwt.event.dom.client.KeyDownHandler;
import com.google.gwt.user.client.Window.Location;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.ValueBoxBase;
import com.google.inject.ImplementedBy;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import org.sigmah.client.event.UpdateEvent;
/**
* Login presenter.
*
* @author Denis Colliot (dcolliot@ideia.fr)
*/
@Singleton
public class LoginPresenter extends AbstractPagePresenter<LoginPresenter.View> {
/**
* Description of the view managed by this presenter.
*/
@ImplementedBy(LoginView.class)
public static interface View extends ViewInterface {
ListBox getLanguagesField();
ValueBoxBase<String> getLoginField();
ValueBoxBase<String> getPasswordField();
HasClickHandlers getLostPasswordLink();
Button getLoginButton();
}
/**
* {@code KeyDownHandler} firing event on enter key down.
*/
private final KeyDownHandler keyDownHandler = new KeyDownHandler() {
@Override
public void onKeyDown(final KeyDownEvent event) {
if (event.getNativeKeyCode() == KeyCodes.KEY_ENTER) {
view.getLoginButton().fireEvent(Events.Select);
}
}
};
/**
* Presenters's initialization.
*
* @param view
* Presenter's view interface.
* @param injector
* Injected client injector.
*/
@Inject
public LoginPresenter(final View view, final Injector injector) {
super(view, injector);
}
/**
* {@inheritDoc}
*/
@Override
public Page getPage() {
return Page.LOGIN;
}
/**
* {@inheritDoc}
*/
@Override
public void onBind() {
// Languages form field values.
for (final Language language : Language.values()) {
view.getLanguagesField().addItem(Language.i18n(language), language.name());
}
// Enter key handler.
view.getLoginField().addKeyDownHandler(keyDownHandler);
view.getPasswordField().addKeyDownHandler(keyDownHandler);
// Lost password link handler.
view.getLostPasswordLink().addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
onLostPasswordLinkAction();
}
});
// Login action handler.
view.getLoginButton().addSelectionListener(new SelectionListener<ButtonEvent>() {
@Override
public void componentSelected(final ButtonEvent ce) {
onLoginAction();
}
});
}
/**
* {@inheritDoc}
*/
@Override
public void onPageRequest(final PageRequest request) {
view.getPasswordField().setValue(null);
final int selectedLanguage = auth().getLanguage() != null ? auth().getLanguage().ordinal() : 0;
view.getLanguagesField().setSelectedIndex(selectedLanguage);
final String email = request.getParameter(RequestParameter.ID);
if (ClientUtils.isNotBlank(email)) {
view.getLoginField().setValue(email);
}
}
// ----------------------------------------------------------------------------------------------
//
// ACTIONS HANDLERS.
//
// ----------------------------------------------------------------------------------------------
/**
* Handler executed on lost password link click.
*/
private void onLostPasswordLinkAction() {
final Language language = Language.fromString(view.getLanguagesField().getValue(view.getLanguagesField().getSelectedIndex()));
eventBus.navigateRequest(Page.LOST_PASSWORD.requestWith(RequestParameter.LANGUAGE, language != null ? language : auth().getLanguage()));
}
/**
* Handler executed on login button click.
*/
private void onLoginAction() {
final String login = view.getLoginField().getValue();
final String password = view.getPasswordField().getValue();
final String language = view.getLanguagesField().getValue(view.getLanguagesField().getSelectedIndex());
// Executes login command.
dispatch.execute(new LoginCommand(login, password, Language.fromString(language)), new CommandResultHandler<Authentication>() {
@Override
protected void onCommandSuccess(final Authentication authentication) {
if (Log.isInfoEnabled()) {
Log.info("Authentication proccesed successfully, reloading application.");
}
injector.getAuthenticationProvider().login(authentication);
eventBus.fireEvent(new UpdateEvent(UpdateEvent.USER_LOGGED_IN));
if (GWT.isScript()) {
// PRODUCTION: Reloads entire application in order to set the selected language into HTML meta.
Location.assign(ClientUtils.getApplicationUrl());
} else {
// DEV MODE: To avoid full page reloading, a simple redirection is executed. Selected language is not taken
// into account.
eventBus.navigate(null, view.getLoadables());
}
}
}, view.getLoadables());
}
}