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 java.util.Map; import org.apache.commons.lang.StringUtils; import org.apache.log4j.Logger; import org.apache.wicket.AttributeModifier; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.extensions.ajax.markup.html.IndicatingAjaxButton; import org.apache.wicket.extensions.ajax.markup.html.IndicatingAjaxLink; 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.image.ContextImage; import org.apache.wicket.markup.html.panel.Fragment; 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.model.ExternalIntegrationInfo; import org.sakaiproject.profile2.tool.components.AjaxExternalLink; import org.sakaiproject.profile2.tool.models.StringModel; import org.sakaiproject.profile2.util.ProfileConstants; import twitter4j.Twitter; import twitter4j.TwitterException; import twitter4j.TwitterFactory; import twitter4j.auth.AccessToken; import twitter4j.auth.RequestToken; public class TwitterPrefsPane extends Panel { private static final long serialVersionUID = 1L; private static final Logger log = Logger.getLogger(TwitterPrefsPane.class); private transient ExternalIntegrationInfo externalIntegrationInfo; private transient RequestToken requestToken; private Fragment currentFragment; @SpringBean(name = "org.sakaiproject.profile2.logic.ProfileExternalIntegrationLogic") protected ProfileExternalIntegrationLogic externalIntegrationLogic; public TwitterPrefsPane(String id, String userUuid) { super(id); //get record externalIntegrationInfo = externalIntegrationLogic.getExternalIntegrationInfo(userUuid); //setup Twitter request token setTwitterRequestToken(); //setup relevant fragment if (externalIntegrationInfo.isTwitterAlreadyConfigured()) { currentFragment = linkedFragment(); } else { currentFragment = unlinkedFragment(); } add(currentFragment); } /** * Fragment which returns the components for the unlinked view * @return */ private Fragment unlinkedFragment() { Fragment frag = new Fragment("fragmentContainer", "unlinked", this); //twitter auth form StringModel twitterModel = new StringModel(); final Form<StringModel> twitterForm = new Form<StringModel>("twitterForm", new Model<StringModel>(twitterModel)); //auth code final TextField<String> twitterAuthCode = new TextField<String>("twitterAuthCode", new PropertyModel<String>(twitterModel, "string")); twitterAuthCode.setMarkupId("twitterauthcodeinput"); twitterAuthCode.setOutputMarkupId(true); twitterAuthCode.setEnabled(false); twitterForm.add(twitterAuthCode); //save button final IndicatingAjaxButton twitterSubmit = new IndicatingAjaxButton("twitterSubmit", twitterForm) { private static final long serialVersionUID = 1L; protected void onSubmit(AjaxRequestTarget target, Form<?> form) { StringModel stringModel = (StringModel) form.getModelObject(); String accessCode = stringModel.getString(); if (StringUtils.isBlank(accessCode)) { //TODO change this target.appendJavaScript("alert('AccessCode was null.');"); return; } AccessToken accessToken = getOAuthAccessToken(accessCode); if (accessToken == null) { //TODO change this target.appendJavaScript("alert('AccessToken was null.');"); return; } //set externalIntegrationInfo.setTwitterToken(accessToken.getToken()); externalIntegrationInfo.setTwitterSecret(accessToken.getTokenSecret()); //save, replace fragments if (externalIntegrationLogic.updateExternalIntegrationInfo(externalIntegrationInfo)) { switchContentFragments(linkedFragment(), target); } else { target.appendJavaScript("alert('Couldn't save info');"); return; } } }; twitterSubmit.setEnabled(false); twitterSubmit.setModel(new ResourceModel("button.link")); twitterForm.add(twitterSubmit); frag.add(twitterForm); //auth link/label final AjaxExternalLink<String> twitterAuthLink = new AjaxExternalLink<String>("twitterAuthLink", getTwitterAuthorisationUrl()) { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { //enable code box and button twitterAuthCode.setEnabled(true); twitterSubmit.setEnabled(true); target.add(twitterAuthCode); target.add(twitterSubmit); } }; Label twitterAuthLabel = new Label("twitterAuthLabel", new ResourceModel("twitter.auth.do")); twitterAuthLink.add(twitterAuthLabel); frag.add(twitterAuthLink); frag.setOutputMarkupId(true); return frag; } /** * Fragment which returns the components for the linked view * @return */ private Fragment linkedFragment() { Fragment frag = new Fragment("fragmentContainer", "linked", this); //label frag.add(new Label("twitterAuthLabel", new ResourceModel("twitter.auth.linked"))); //screen name String twitterName = externalIntegrationLogic.getTwitterName(externalIntegrationInfo); Label twitterAuthName = new Label("twitterAuthName", new Model<String>(twitterName)); if (StringUtils.isBlank(twitterName)) { twitterAuthName.setDefaultModel(new ResourceModel("error.twitter.details.invalid")); } frag.add(twitterAuthName); //remove link IndicatingAjaxLink<String> twitterAuthRemoveLink = new IndicatingAjaxLink<String>("twitterAuthRemoveLink") { private static final long serialVersionUID = 1L; public void onClick(AjaxRequestTarget target) { externalIntegrationInfo.setTwitterToken(null); externalIntegrationInfo.setTwitterSecret(null); //remove details if (externalIntegrationLogic.updateExternalIntegrationInfo(externalIntegrationInfo)) { switchContentFragments(unlinkedFragment(), target); } else { target.appendJavaScript("alert('Couldn't remove info');"); return; } } }; ContextImage twitterAuthRemoveIcon = new ContextImage("twitterAuthRemoveIcon", new Model<String>(ProfileConstants.CROSS_IMG)); twitterAuthRemoveLink.add(twitterAuthRemoveIcon); twitterAuthRemoveLink .add(new AttributeModifier("title", true, new ResourceModel("link.title.unlinktwitter"))); frag.add(twitterAuthRemoveLink); frag.setOutputMarkupId(true); return frag; } /** * Helper to switch content fragments for us * * @param replacement replacement Fragment * @param target AjaxRequestTarget */ private void switchContentFragments(Fragment replacement, AjaxRequestTarget target) { replacement.setOutputMarkupId(true); currentFragment.replaceWith(replacement); if (target != null) { target.add(replacement); //resize iframe target.appendJavaScript("setMainFrameHeight(window.name);"); } //must keep reference up to date currentFragment = replacement; } /** * Helper to get and set the Twitter request token we need for linking accounts */ private void setTwitterRequestToken() { Map<String, String> config = externalIntegrationLogic.getTwitterOAuthConsumerDetails(); Twitter twitter = new TwitterFactory().getInstance(); twitter.setOAuthConsumer(config.get("key"), config.get("secret")); try { requestToken = twitter.getOAuthRequestToken(); } catch (TwitterException e) { e.printStackTrace(); } } /** * Helper to get the user access token from the request token and supplied access code * @param accessCode * @return */ private AccessToken getOAuthAccessToken(String accessCode) { Map<String, String> config = externalIntegrationLogic.getTwitterOAuthConsumerDetails(); Twitter twitter = new TwitterFactory().getInstance(); twitter.setOAuthConsumer(config.get("key"), config.get("secret")); try { return twitter.getOAuthAccessToken(requestToken, accessCode); } catch (TwitterException e) { e.printStackTrace(); } return null; } /** * Helper to get the Twitter auth url * @return */ private String getTwitterAuthorisationUrl() { if (requestToken == null) { return null; } return requestToken.getAuthenticationURL(); } }