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.Component; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.markup.html.AjaxFallbackLink; import org.apache.wicket.behavior.Behavior; import org.apache.wicket.extensions.ajax.markup.html.IndicatingAjaxButton; import org.apache.wicket.markup.head.IHeaderResponse; import org.apache.wicket.markup.head.StringHeaderItem; 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.TextField; import org.apache.wicket.markup.html.panel.Panel; import org.apache.wicket.model.Model; import org.apache.wicket.model.PropertyModel; import org.apache.wicket.model.ResourceModel; import org.apache.wicket.spring.injection.annot.SpringBean; import org.sakaiproject.profile2.logic.ProfileExternalIntegrationLogic; import org.sakaiproject.profile2.logic.ProfileMessagingLogic; import org.sakaiproject.profile2.logic.ProfilePreferencesLogic; import org.sakaiproject.profile2.logic.ProfileStatusLogic; import org.sakaiproject.profile2.logic.ProfileWallLogic; import org.sakaiproject.profile2.logic.SakaiProxy; import org.sakaiproject.profile2.model.UserProfile; import org.sakaiproject.profile2.tool.components.ProfileStatusRenderer; import org.sakaiproject.profile2.tool.models.StringModel; import org.sakaiproject.profile2.util.ProfileConstants; public class MyStatusPanel extends Panel { private static final long serialVersionUID = 1L; private static final Logger log = Logger.getLogger(MyStatusPanel.class); private ProfileStatusRenderer status; @SpringBean(name = "org.sakaiproject.profile2.logic.SakaiProxy") private SakaiProxy sakaiProxy; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfileStatusLogic") private ProfileStatusLogic statusLogic; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfilePreferencesLogic") private ProfilePreferencesLogic preferencesLogic; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfileMessagingLogic") private ProfileMessagingLogic messagingLogic; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfileExternalIntegrationLogic") protected ProfileExternalIntegrationLogic externalIntegrationLogic; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfileWallLogic") protected ProfileWallLogic wallLogic; //get default text that fills the textField String defaultStatus = new ResourceModel("text.no.status", "Say something").getObject().toString(); public MyStatusPanel(String id, UserProfile userProfile) { super(id); log.debug("MyStatusPanel()"); //get info final String displayName = userProfile.getDisplayName(); final String userId = userProfile.getUserUuid(); //if superUser and proxied, can't update boolean editable = true; if (sakaiProxy.isSuperUserAndProxiedToUser(userId)) { editable = false; } //name Label profileName = new Label("profileName", displayName); add(profileName); //status component status = new ProfileStatusRenderer("status", userId, null, "tiny") { @Override public boolean isVisible() { return this.hasStatusSet() && sakaiProxy.isProfileStatusEnabled(); } }; status.setOutputMarkupId(true); add(status); //clear link final AjaxFallbackLink clearLink = new AjaxFallbackLink("clearLink") { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { //clear status, hide and repaint if (statusLogic.clearUserStatus(userId)) { status.setVisible(false); //hide status this.setVisible(false); //hide clear link target.add(status); target.add(this); } } @Override public boolean isVisible() { return status.isVisible(); //if there is text to show } }; clearLink.setOutputMarkupPlaceholderTag(true); clearLink.add(new Label("clearLabel", new ResourceModel("link.status.clear"))); add(clearLink); WebMarkupContainer statusFormContainer = new WebMarkupContainer("statusFormContainer") { @Override public boolean isVisible() { return sakaiProxy.isProfileStatusEnabled(); } }; //setup SimpleText object to back the single form field StringModel stringModel = new StringModel(); //status form Form form = new Form("form", new Model(stringModel)); form.setOutputMarkupId(true); //status field final TextField statusField = new TextField("message", new PropertyModel(stringModel, "string")); statusField.setMarkupId("messageinput"); statusField.setOutputMarkupId(true); statusField.setOutputMarkupPlaceholderTag(true); statusField.add(new StatusFieldCounterBehaviour()); form.add(statusField); //link the status textfield field with the focus/blur function via this dynamic js //also link with counter //add(new StatusFieldCounterBehaviour()); //submit button IndicatingAjaxButton submitButton = new IndicatingAjaxButton("submit", form) { private static final long serialVersionUID = 1L; protected void onSubmit(AjaxRequestTarget target, Form form) { //get the backing model StringModel stringModel = (StringModel) form.getModelObject(); //get userId from sakaiProxy String userId = sakaiProxy.getCurrentUserId(); //get the status. if its the default text, do not update, although we should clear the model String statusMessage = StringUtils.trim(stringModel.getString()); if (StringUtils.isBlank(statusMessage) || StringUtils.equals(statusMessage, defaultStatus)) { log.warn("Status for userId: " + userId + " was not updated because they didn't enter anything."); return; } //save status from userProfile if (statusLogic.setUserStatus(userId, statusMessage)) { log.info("Saved status for: " + userId); //post update event sakaiProxy.postEvent(ProfileConstants.EVENT_STATUS_UPDATE, "/profile/" + userId, true); //update twitter externalIntegrationLogic.sendMessageToTwitter(userId, statusMessage); // post to walls if wall enabled if (true == sakaiProxy.isWallEnabledGlobally()) { wallLogic.addNewStatusToWall(statusMessage, sakaiProxy.getCurrentUserId()); } //repaint status component ProfileStatusRenderer newStatus = new ProfileStatusRenderer("status", userId, null, "tiny"); newStatus.setOutputMarkupId(true); status.replaceWith(newStatus); newStatus.setVisible(true); //also show the clear link clearLink.setVisible(true); if (target != null) { target.add(newStatus); target.add(clearLink); status = newStatus; //update reference //reset the field target.appendJavaScript( "autoFill('#" + statusField.getMarkupId() + "', '" + defaultStatus + "');"); //reset the counter target.appendJavaScript("countChars('#" + statusField.getMarkupId() + "');"); } } else { log.error("Couldn't save status for: " + userId); String js = "alert('Failed to save status. If the problem persists, contact your system administrator.');"; target.prependJavaScript(js); } } }; submitButton.setModel(new ResourceModel("button.sayit")); form.add(submitButton); //add form to container statusFormContainer.add(form); //if not editable, hide the entire form if (!editable) { statusFormContainer.setVisible(false); } add(statusFormContainer); } public class StatusFieldCounterBehaviour extends Behavior { public void renderHead(Component component, IHeaderResponse response) { response.render(StringHeaderItem .forString("<script type=\"text/javascript\">" + "$(document).ready( function(){" + "autoFill('#" + component.getMarkupId() + "', '" + defaultStatus + "');" + "countChars('#" + component.getMarkupId() + "');" + "});" + "</script>")); } } }