Java tutorial
/** * This file is part of mycollab-web. * * mycollab-web 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. * * mycollab-web 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 mycollab-web. If not, see <http://www.gnu.org/licenses/>. */ package com.mycollab.vaadin.web.ui; import com.google.common.eventbus.Subscribe; import com.hp.gagawa.java.elements.A; import com.hp.gagawa.java.elements.Span; import com.mycollab.common.i18n.GenericI18Enum; import com.mycollab.common.i18n.ShellI18nEnum; import com.mycollab.common.ui.components.notification.RequestUploadAvatarNotification; import com.mycollab.common.ui.components.notification.SmtpSetupNotification; import com.mycollab.core.AbstractNotification; import com.mycollab.core.NewUpdateAvailableNotification; import com.mycollab.eventmanager.ApplicationEventListener; import com.mycollab.eventmanager.EventBusFactory; import com.mycollab.shell.events.ShellEvent; import com.mycollab.shell.view.components.UpgradeConfirmWindow; import com.mycollab.vaadin.UserUIContext; import com.mycollab.vaadin.AsyncInvoker; import com.mycollab.vaadin.ui.ELabel; import com.mycollab.vaadin.ui.UIConstants; import com.vaadin.server.FontAwesome; import com.vaadin.shared.ui.label.ContentMode; import com.vaadin.ui.*; import org.eclipse.jetty.util.ConcurrentHashSet; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.vaadin.hene.popupbutton.PopupButton; import org.vaadin.jouni.restrain.Restrain; import org.vaadin.viritin.button.MButton; import org.vaadin.viritin.layouts.MCssLayout; import org.vaadin.viritin.layouts.MHorizontalLayout; import java.util.Set; /** * @author MyCollab Ltd. * @since 4.1 */ public class NotificationComponent extends PopupButton implements PopupButton.PopupVisibilityListener, ApplicationEventListener<ShellEvent.NewNotification> { private static Logger LOG = LoggerFactory.getLogger(NotificationComponent.class); private static final long serialVersionUID = 2908372640829060184L; private final Set<AbstractNotification> notificationItems; private final VerticalLayout notificationContainer; public NotificationComponent() { notificationItems = new ConcurrentHashSet<>(); notificationContainer = new VerticalLayout(); new Restrain(notificationContainer).setMaxWidth("500px"); this.setContent(notificationContainer); this.setIcon(FontAwesome.BELL); this.setStyleName("notification-button"); addPopupVisibilityListener(this); EventBusFactory.getInstance().register(this); // Register to receive broadcasts JavaScript.getCurrent().addFunction("com.mycollab.scripts.upgrade", jsonArray -> { String version = jsonArray.getString(0); String installerFile = jsonArray.getString(1); String manualDownloadLink = jsonArray.getString(2); UI.getCurrent().addWindow(new UpgradeConfirmWindow(version, manualDownloadLink, installerFile)); }); } @Override public void popupVisibilityChange(PopupVisibilityEvent event) { notificationContainer.removeAllComponents(); if (notificationItems.size() > 0) { for (AbstractNotification item : notificationItems) { Component comp = buildComponentFromNotification(item); comp.setStyleName("notification-type"); comp.addStyleName("notification-type-" + item.getType()); notificationContainer.addComponent(comp); } } else { Label noItemLbl = new Label(UserUIContext.getMessage(ShellI18nEnum.OPT_NO_NOTIFICATION)); notificationContainer.addComponent(noItemLbl); notificationContainer.setComponentAlignment(noItemLbl, Alignment.MIDDLE_CENTER); } } private void addNotification(AbstractNotification notification) { notificationItems.add(notification); updateCaption(); displayTrayNotification(notification); } public void removeNotification(AbstractNotification notification) { notificationItems.remove(notification); updateCaption(); } private void updateCaption() { if (notificationItems.size() > 0) { UI ui = getUI(); AsyncInvoker.access(ui, new AsyncInvoker.PageCommand() { @Override public void run() { NotificationComponent.this.setCaption("" + notificationItems.size()); } }); } else { this.setCaption(null); } } @Subscribe @Override public void handle(ShellEvent.NewNotification event) { if (event.getData() instanceof AbstractNotification) { addNotification((AbstractNotification) event.getData()); } } private void displayTrayNotification(AbstractNotification item) { if (item instanceof NewUpdateAvailableNotification) { NewUpdateAvailableNotification updateNo = (NewUpdateAvailableNotification) item; Notification no; if (UserUIContext.isAdmin()) { no = new Notification(UserUIContext.getMessage(GenericI18Enum.WINDOW_INFORMATION_TITLE), UserUIContext.getMessage(ShellI18nEnum.OPT_HAVING_NEW_VERSION, ((NewUpdateAvailableNotification) item).getVersion()) + " " + new A("javascript:com.mycollab.scripts.upgrade('" + updateNo.getVersion() + "','" + updateNo.getAutoDownloadLink() + "','" + updateNo.getManualDownloadLink() + "')").appendText(UserUIContext.getMessage(ShellI18nEnum.ACTION_UPGRADE)), Notification.Type.TRAY_NOTIFICATION); } else { no = new Notification(UserUIContext.getMessage(GenericI18Enum.WINDOW_INFORMATION_TITLE), UserUIContext.getMessage(ShellI18nEnum.OPT_HAVING_NEW_VERSION, ((NewUpdateAvailableNotification) item).getVersion()), Notification.Type.TRAY_NOTIFICATION); } no.setHtmlContentAllowed(true); no.setDelayMsec(300000); UI currentUI = this.getUI(); AsyncInvoker.access(getUI(), new AsyncInvoker.PageCommand() { @Override public void run() { no.show(currentUI.getPage()); } }); } } private Component buildComponentFromNotification(AbstractNotification item) { final MHorizontalLayout wrapper = new MHorizontalLayout(); wrapper.setData(item); wrapper.setDefaultComponentAlignment(Alignment.TOP_LEFT); if (item instanceof NewUpdateAvailableNotification) { final NewUpdateAvailableNotification notification = (NewUpdateAvailableNotification) item; Span spanEl = new Span(); spanEl.appendText( UserUIContext.getMessage(ShellI18nEnum.OPT_HAVING_NEW_VERSION, notification.getVersion())); ELabel lbl = ELabel.html(FontAwesome.INFO_CIRCLE.getHtml() + " " + spanEl.write()).withFullWidth(); CssLayout lblWrapper = new CssLayout(); lblWrapper.addComponent(lbl); wrapper.addComponent(lblWrapper); wrapper.expand(lblWrapper); if (UserUIContext.isAdmin()) { MButton upgradeBtn = new MButton(UserUIContext.getMessage(ShellI18nEnum.ACTION_UPGRADE), clickEvent -> { UI.getCurrent().addWindow(new UpgradeConfirmWindow(notification.getVersion(), notification.getManualDownloadLink(), notification.getInstallerFile())); NotificationComponent.this.setPopupVisible(false); }).withStyleName(UIConstants.BLOCK); wrapper.addComponent(upgradeBtn); } } else if (item instanceof RequestUploadAvatarNotification) { wrapper.addComponent(new Label(FontAwesome.EXCLAMATION_TRIANGLE.getHtml() + " " + UserUIContext.getMessage(ShellI18nEnum.OPT_REQUEST_UPLOAD_AVATAR), ContentMode.HTML)); MButton uploadAvatarBtn = new MButton(UserUIContext.getMessage(ShellI18nEnum.ACTION_UPLOAD_AVATAR), clickEvent -> { EventBusFactory.getInstance() .post(new ShellEvent.GotoUserAccountModule(this, new String[] { "preview" })); NotificationComponent.this.setPopupVisible(false); }).withStyleName(UIConstants.BLOCK); wrapper.add(uploadAvatarBtn); } else if (item instanceof SmtpSetupNotification) { MButton smtpBtn = new MButton(UserUIContext.getMessage(GenericI18Enum.ACTION_SETUP), clickEvent -> { EventBusFactory.getInstance() .post(new ShellEvent.GotoUserAccountModule(this, new String[] { "setup" })); NotificationComponent.this.setPopupVisible(false); }).withStyleName(UIConstants.BLOCK); Label lbl = ELabel.html(FontAwesome.EXCLAMATION_TRIANGLE.getHtml() + " " + UserUIContext.getMessage(ShellI18nEnum.ERROR_NO_SMTP_SETTING)); MCssLayout lblWrapper = new MCssLayout(lbl); wrapper.with(lblWrapper, smtpBtn).expand(lblWrapper); } else { LOG.error("Do not render notification " + item); } return wrapper; } }