Java tutorial
/** This package is part of the application VIF. Copyright (C) 2011-2015, Benno Luthiger 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 2 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, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.hip.vif.admin.groupedit.ui; import org.hip.vif.admin.groupedit.Activator; import org.hip.vif.admin.groupedit.tasks.GroupStateChangeNotificationTask; import org.hip.vif.web.util.VIFViewHelper; import org.ripla.interfaces.IMessages; import org.ripla.web.util.RiplaViewHelper; import com.vaadin.data.Validator.InvalidValueException; import com.vaadin.data.fieldgroup.FieldGroup; import com.vaadin.data.fieldgroup.FieldGroup.CommitException; import com.vaadin.data.util.ObjectProperty; import com.vaadin.data.util.PropertysetItem; import com.vaadin.data.validator.StringLengthValidator; import com.vaadin.shared.ui.label.ContentMode; import com.vaadin.ui.AbstractField; import com.vaadin.ui.Button; import com.vaadin.ui.Button.ClickEvent; import com.vaadin.ui.CustomComponent; import com.vaadin.ui.Label; import com.vaadin.ui.Notification; import com.vaadin.ui.Notification.Type; import com.vaadin.ui.RichTextArea; import com.vaadin.ui.TextField; import com.vaadin.ui.VerticalLayout; /** View to ask the group administrator whether to notify the group's participants about state changes of the discussion * group. * * @author Luthiger Created: 13.11.2011 */ @SuppressWarnings("serial") public class GroupStateChangeNotificationView extends CustomComponent { private static final int DEF_WIDTH = 700; private static final int DEF_HEIGHT = 250; private static final String FLD_SUBJECT = "subject"; private static final String FLD_BODY = "body"; /** View constructor. * * @param inGroupName String * @param inSubject String * @param inBody String * @param inTask {@link GroupStateChangeNotificationTask} */ public GroupStateChangeNotificationView(final String inGroupName, final String inSubject, final String inBody, final GroupStateChangeNotificationTask inTask) { final VerticalLayout lLayout = new VerticalLayout(); setCompositionRoot(lLayout); final IMessages lMessages = Activator.getMessages(); lLayout.setStyleName("vif-view"); //$NON-NLS-1$ lLayout.addComponent(new Label( String.format(VIFViewHelper.TMPL_TITLE, "vif-pagetitle", //$NON-NLS-1$ lMessages.getFormattedMessage("ui.group.notify.view.title.page", inGroupName)), //$NON-NLS-1$ ContentMode.HTML)); lLayout.addComponent(new Label( String.format(VIFViewHelper.TMPL_TITLE, "vif-remark", //$NON-NLS-1$ lMessages.getMessage("ui.group.notify.label.remark")), //$NON-NLS-1$ ContentMode.HTML)); final PropertysetItem lMail = new PropertysetItem(); lMail.addItemProperty(FLD_SUBJECT, new ObjectProperty<String>("")); lMail.addItemProperty(FLD_BODY, new ObjectProperty<String>("")); final FieldGroup lForm = new FieldGroup(lMail); final VerticalLayout lFormLayout = new VerticalLayout(); String lLabel = lMessages.getMessage("ui.group.notify.label.subject"); //$NON-NLS-1$ lFormLayout.addComponent( new Label(String.format(VIFViewHelper.TMPL_TITLE, "vif-title", lLabel), ContentMode.HTML)); //$NON-NLS-1$ final TextField lSubject = RiplaViewHelper.createTextField(inSubject, DEF_WIDTH, new NotEmptyValidator(lLabel, lMessages)); addField(lLabel, lSubject, lFormLayout, lMessages); lLabel = lMessages.getMessage("ui.group.notify.label.body"); //$NON-NLS-1$ lFormLayout.addComponent( new Label(String.format(VIFViewHelper.TMPL_TITLE, "vif-title", lLabel), ContentMode.HTML)); //$NON-NLS-1$ final RichTextArea lBody = VIFViewHelper.createTextArea(inBody, DEF_WIDTH, DEF_HEIGHT, new NotEmptyValidator(lLabel, lMessages)); addField(lLabel, lBody, lFormLayout, lMessages); lForm.bind(lSubject, FLD_SUBJECT); lForm.bind(lBody, FLD_BODY); lLayout.addComponent(lFormLayout); final Button lNotify = new Button(lMessages.getMessage("ui.group.notify.button.notify")); //$NON-NLS-1$ lNotify.addClickListener(new Button.ClickListener() { @Override public void buttonClick(final ClickEvent inEvent) { try { lForm.commit(); if (!inTask.doNotification(lMail.getItemProperty(FLD_SUBJECT).getValue().toString(), lMail.getItemProperty(FLD_BODY).getValue().toString())) { Notification.show(lMessages.getMessage("errmsg.notification.send"), Type.WARNING_MESSAGE); //$NON-NLS-1$ } } catch (InvalidValueException | CommitException exc) { // intentionally left empty } } }); final Button lContinue = new Button(lMessages.getMessage("ui.group.notify.button.continue")); //$NON-NLS-1$ lContinue.addClickListener(new Button.ClickListener() { @Override public void buttonClick(final ClickEvent inEvent) { inTask.doContinue(); } }); lLayout.addComponent(RiplaViewHelper.createButtons(lNotify, lContinue)); } private void addField(final String inFieldID, final AbstractField<?> inField, final VerticalLayout inFormLayout, final IMessages inMessages) { inFormLayout.addComponent(inField); inField.setRequiredError(inMessages.getFormattedMessage("errmsg.field.not.empty", inFieldID)); //$NON-NLS-1$ inField.setRequired(true); inField.setImmediate(true); } // --- private classes --- private static class NotEmptyValidator extends StringLengthValidator { NotEmptyValidator(final String inFieldName, final IMessages inMessages) { super(inMessages.getFormattedMessage("errmsg.field.not.empty", inFieldName), 1, -1, false); //$NON-NLS-1$ } } }