Java tutorial
/** * Copyright (c) 2008-2012 The Sakai Foundation * * Licensed under the Educational Community License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.osedu.org/licenses/ECL-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.sakaiproject.profile2.tool.pages.panels; import org.apache.commons.lang.StringUtils; import org.apache.log4j.Logger; import org.apache.wicket.AttributeModifier; import org.apache.wicket.Component; import org.apache.wicket.RestartResponseException; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.behavior.AttributeAppender; import org.apache.wicket.extensions.ajax.markup.html.IndicatingAjaxButton; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.TextArea; import org.apache.wicket.markup.html.panel.Panel; import org.apache.wicket.markup.repeater.Item; import org.apache.wicket.markup.repeater.data.DataView; import org.apache.wicket.model.Model; import org.apache.wicket.model.PropertyModel; import org.apache.wicket.model.ResourceModel; import org.apache.wicket.request.mapper.parameter.PageParameters; import org.apache.wicket.spring.injection.annot.SpringBean; import org.sakaiproject.profile2.logic.ProfileMessagingLogic; import org.sakaiproject.profile2.logic.ProfilePreferencesLogic; import org.sakaiproject.profile2.logic.ProfilePrivacyLogic; import org.sakaiproject.profile2.logic.SakaiProxy; import org.sakaiproject.profile2.model.Message; import org.sakaiproject.profile2.model.MessageParticipant; import org.sakaiproject.profile2.model.MessageThread; import org.sakaiproject.profile2.model.ProfilePreferences; import org.sakaiproject.profile2.model.ProfilePrivacy; import org.sakaiproject.profile2.tool.components.ProfileImage; import org.sakaiproject.profile2.tool.dataproviders.MessagesDataProvider; import org.sakaiproject.profile2.tool.models.StringModel; import org.sakaiproject.profile2.tool.pages.MyMessages; import org.sakaiproject.profile2.tool.pages.ViewProfile; import org.sakaiproject.profile2.util.ProfileConstants; import org.sakaiproject.profile2.util.ProfileUtils; public class MessageView extends Panel { private static final long serialVersionUID = 1L; private static final Logger log = Logger.getLogger(ConfirmedFriends.class); private DataView<Message> messageList = null; private WebMarkupContainer messageListContainer = null; private boolean lastUnreadSet = false; @SpringBean(name = "org.sakaiproject.profile2.logic.SakaiProxy") protected SakaiProxy sakaiProxy; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfilePreferencesLogic") protected ProfilePreferencesLogic preferencesLogic; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfileMessagingLogic") protected ProfileMessagingLogic messagingLogic; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfilePrivacyLogic") protected ProfilePrivacyLogic privacyLogic; /** * Constructor for an incoming link with a threadId as part of the PageParameters * @param parameters */ public MessageView(final String id, PageParameters parameters) { super(id); log.debug("MyMessageView(" + parameters.toString() + ")"); MessageThread thread = messagingLogic.getMessageThread(parameters.get("thread").toString()); //check user is a thread participant String currentUserUuid = sakaiProxy.getCurrentUserId(); if (!messagingLogic.isThreadParticipant(thread.getId(), currentUserUuid)) { //this would only ever happen if the user has access to the other user's workspace because the link is a direct link to their site //so they won't even reach this part if they don't have access - so it would need to be a very special case. log.error("MyMessageView: user " + currentUserUuid + " attempted to access restricted thread: " + thread.getId()); throw new RestartResponseException(new MyMessages()); } renderMyMessagesView(sakaiProxy.getCurrentUserId(), thread.getId(), thread.getSubject()); } /** * Constructor for normal viewing * @param currentUserUuid * @param threadId */ public MessageView(final String id, final String currentUserUuid, final String threadId) { super(id); log.debug("MyMessageView(" + currentUserUuid + ", " + threadId + ")"); //get subject String threadSubject = messagingLogic.getThreadSubject(threadId); renderMyMessagesView(currentUserUuid, threadId, threadSubject); } /** * Constructor for normal viewing * @param currentUserUuid * @param threadId */ public MessageView(final String id, final String currentUserUuid, final String threadId, final String threadSubject) { super(id); log.debug("MyMessageView(" + currentUserUuid + ", " + threadId + ", " + threadSubject + ")"); renderMyMessagesView(currentUserUuid, threadId, threadSubject); } /** * Does the actual rendering of the page * @param currentUserUuid * @param threadId * @param threadSubject */ private void renderMyMessagesView(final String currentUserUuid, final String threadId, final String threadSubject) { //details container WebMarkupContainer messageDetailsContainer = new WebMarkupContainer("messageDetailsContainer"); messageDetailsContainer.setOutputMarkupId(true); //thread subject Label threadSubjectLabel = new Label("threadSubject", new Model<String>(threadSubject)); messageDetailsContainer.add(threadSubjectLabel); add(messageDetailsContainer); //list container messageListContainer = new WebMarkupContainer("messageListContainer"); messageListContainer.setOutputMarkupId(true); //get our list of messages final MessagesDataProvider provider = new MessagesDataProvider(threadId); messageList = new DataView<Message>("messageList", provider) { private static final long serialVersionUID = 1L; protected void populateItem(final Item<Message> item) { final Message message = (Message) item.getDefaultModelObject(); final String messageFromUuid = message.getFrom(); //we need to know if this message has been read or not so we can style it accordingly //we only need this if we didn't send the message MessageParticipant participant = null; boolean messageOwner = false; if (StringUtils.equals(messageFromUuid, currentUserUuid)) { messageOwner = true; } if (!messageOwner) { participant = messagingLogic.getMessageParticipant(message.getId(), currentUserUuid); } //prefs and privacy ProfilePreferences prefs = preferencesLogic.getPreferencesRecordForUser(messageFromUuid); ProfilePrivacy privacy = privacyLogic.getPrivacyRecordForUser(messageFromUuid); //photo link AjaxLink<String> photoLink = new AjaxLink<String>("photoLink", new Model<String>(messageFromUuid)) { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { setResponsePage(new ViewProfile(getModelObject())); } }; //photo /* disabled for now ProfileImage messagePhoto = new ProfileImage("messagePhoto", new Model<String>(messageFromUuid)); messagePhoto.setSize(ProfileConstants.PROFILE_IMAGE_THUMBNAIL); photoLink.add(messagePhoto); */ item.add(photoLink); //name link AjaxLink<String> messageFromLink = new AjaxLink<String>("messageFromLink", new Model<String>(messageFromUuid)) { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { setResponsePage(new ViewProfile(getModelObject())); } }; messageFromLink.add(new Label("messageFromName", new Model<String>(sakaiProxy.getUserDisplayName(messageFromUuid)))); item.add(messageFromLink); //date item.add(new Label("messageDate", ProfileUtils.convertDateToString(message.getDatePosted(), ProfileConstants.MESSAGE_DISPLAY_DATE_FORMAT))); //message body item.add(new Label("messageBody", new Model<String>(message.getMessage()))); //highlight if new, then mark it as read if (!messageOwner && !participant.isRead()) { item.add(new AttributeAppender("class", true, new Model<String>("unread-message"), " ")); messagingLogic.toggleMessageRead(participant, true); //set param for first unread message in the thread if (!lastUnreadSet) { lastUnreadSet = true; item.add(new AttributeModifier("rel", true, new Model<String>("lastUnread"))); } } item.setOutputMarkupId(true); } }; messageList.setOutputMarkupId(true); messageListContainer.add(messageList); add(messageListContainer); //reply form StringModel stringModel = new StringModel(); Form<StringModel> replyForm = new Form<StringModel>("replyForm", new Model<StringModel>(stringModel)); //form feedback final Label formFeedback = new Label("formFeedback"); formFeedback.setOutputMarkupPlaceholderTag(true); add(formFeedback); //reply field replyForm.add(new Label("replyLabel", new ResourceModel("message.reply"))); final TextArea<StringModel> replyField = new TextArea<StringModel>("replyField", new PropertyModel<StringModel>(stringModel, "string")); replyField.setRequired(true); replyField.setOutputMarkupId(true); replyForm.add(replyField); //reply button IndicatingAjaxButton replyButton = new IndicatingAjaxButton("replyButton", replyForm) { private static final long serialVersionUID = 1L; protected void onSubmit(AjaxRequestTarget target, Form form) { StringModel stringModel = (StringModel) form.getModelObject(); String reply = stringModel.getString(); //create a direct link to view this message thread //String messageLink = sakaiProxy.getDirectUrlToUserProfile(newMessage.getTo(), urlFor(MyMessageView.class, new PageParameters("thread=" + threadId)).toString()); //send it, get Message back so we can add it to the list Message message = messagingLogic.replyToThread(threadId, reply, currentUserUuid); if (message != null) { //clear this field replyField.setModelObject(null); target.add(replyField); //create new item and add it to the list //do we need to register this with the listview? Component item = buildItem(message); target.prependJavaScript(String.format( "var item=document.createElement('%s');item.id='%s';Wicket.$('%s').appendChild(item);", "tr", item.getMarkupId(), messageListContainer.getMarkupId())); target.add(item); //repaint the list of messages in this thread //target.addComponent(messageListContainer); //resize target.appendJavaScript("setMainFrameHeight(window.name);"); } } protected void onError(AjaxRequestTarget target, Form form) { //validate if (!replyField.isValid()) { formFeedback.setDefaultModel(new ResourceModel("error.message.required.body")); } formFeedback.add(new AttributeModifier("class", true, new Model<String>("alertMessage"))); target.add(formFeedback); } }; replyForm.add(replyButton); replyButton.setModel(new ResourceModel("button.message.send")); add(replyForm); } //build a single item in the list so we can add it to the end private Component buildItem(Message message) { WebMarkupContainer item = new WebMarkupContainer(messageList.newChildId()); item.setOutputMarkupId(true); messageList.add(item); ProfilePreferences prefs = preferencesLogic.getPreferencesRecordForUser(message.getFrom()); //photo and link item.add(new AjaxLink<String>("photoLink", new Model<String>(message.getFrom())) { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { setResponsePage(new ViewProfile(getModelObject())); } }); /* disabled for now //image ProfileImage messagePhoto = new ProfileImage("messagePhoto", new Model<String>(message.getFrom())); messagePhoto.setSize(ProfileConstants.PROFILE_IMAGE_THUMBNAIL); item.add(messagePhoto); */ //name link item.add(new AjaxLink<String>("messageFromLink", new Model<String>(message.getFrom())) { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { setResponsePage(new ViewProfile(getModelObject())); } }.add(new Label("messageFromName", new Model<String>(sakaiProxy.getUserDisplayName(message.getFrom()))))); //date item.add(new Label("messageDate", ProfileUtils.convertDateToString(message.getDatePosted(), ProfileConstants.MESSAGE_DISPLAY_DATE_FORMAT))); //message body item.add(new Label("messageBody", new Model<String>(message.getMessage()))); return item; } }