Java tutorial
/* * Copyright (c) 2016 Washington State Department of Transportation * * 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 3 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, see <http://www.gnu.org/licenses/> * */ package gov.wa.wsdot.mobile.client.activities.socialmedia.twitter; import com.google.gwt.core.client.JsArray; import com.google.gwt.jsonp.client.JsonpRequestBuilder; import com.google.gwt.resources.client.ImageResource; import com.google.gwt.safehtml.shared.SafeHtml; import com.google.gwt.safehtml.shared.SafeHtmlUtils; import com.google.gwt.user.client.Timer; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.ui.AbstractImagePrototype; import com.google.gwt.user.client.ui.AcceptsOneWidget; import com.google.web.bindery.event.shared.EventBus; import com.googlecode.gwtphonegap.client.PhoneGap; import com.googlecode.gwtphonegap.client.inappbrowser.InAppBrowser; import com.googlecode.gwtphonegap.client.notification.AlertCallback; import com.googlecode.mgwt.mvp.client.MGWTAbstractActivity; import com.googlecode.mgwt.ui.client.widget.panel.pull.PullArrowStandardHandler; import com.googlecode.mgwt.ui.client.widget.panel.pull.PullArrowStandardHandler.PullActionHandler; import gov.wa.wsdot.mobile.client.ClientFactory; import gov.wa.wsdot.mobile.client.css.AppBundle; import gov.wa.wsdot.mobile.client.event.ActionEvent; import gov.wa.wsdot.mobile.client.event.ActionNames; import gov.wa.wsdot.mobile.client.plugins.accessibility.Accessibility; import gov.wa.wsdot.mobile.client.plugins.analytics.Analytics; import gov.wa.wsdot.mobile.client.util.Consts; import gov.wa.wsdot.mobile.shared.TwitterFeed; import gov.wa.wsdot.mobile.shared.TwitterFeed.Media; import gov.wa.wsdot.mobile.shared.TwitterFeed.Urls; import gov.wa.wsdot.mobile.shared.TwitterItem; import java.util.ArrayList; import java.util.HashMap; public class TwitterActivity extends MGWTAbstractActivity implements TwitterView.Presenter { private final ClientFactory clientFactory; private TwitterView view; private EventBus eventBus; private PhoneGap phoneGap; private Analytics analytics; private InAppBrowser inAppBrowser; private Accessibility accessibility; private static ArrayList<TwitterItem> twitterItems = new ArrayList<TwitterItem>(); private static HashMap<String, String> twitterProfileImages = new HashMap<String, String>(); private static HashMap<String, String> twitterScreenNames = new HashMap<String, String>(); private static final String TWITTER_FEED_URL = "http://www.wsdot.wa.gov/news/socialroom/posts/twitter"; public TwitterActivity(ClientFactory clientFactory) { this.clientFactory = clientFactory; } @Override public void start(AcceptsOneWidget panel, final EventBus eventBus) { view = clientFactory.getTwitterView(); accessibility = clientFactory.getAccessibility(); this.eventBus = eventBus; phoneGap = clientFactory.getPhoneGap(); analytics = clientFactory.getAnalytics(); inAppBrowser = this.phoneGap.getInAppBrowser(); view.setPresenter(this); view.getPullHeader().setHTML("pull down"); twitterScreenNames.put("All Accounts", "all"); twitterScreenNames.put("Bertha", "BerthaDigsSR99"); twitterScreenNames.put("Ferries", "wsferries"); twitterScreenNames.put("Good To Go!", "GoodToGoWSDOT"); twitterScreenNames.put("Snoqualmie Pass", "SnoqualmiePass"); twitterScreenNames.put("WSDOT", "wsdot"); twitterScreenNames.put("WSDOT 520", "wsdot_520"); twitterScreenNames.put("WSDOT East", "WSDOT_East"); twitterScreenNames.put("WSDOT Southwest", "wsdot_sw"); twitterScreenNames.put("WSDOT Tacoma", "wsdot_tacoma"); twitterScreenNames.put("WSDOT Traffic", "wsdot_traffic"); twitterScreenNames.put("WSDOT Jobs", "WSDOTjobs"); twitterProfileImages.put("wsferries", AppBundle.INSTANCE.css().wsdotFerriesIcon()); twitterProfileImages.put("GoodToGoWSDOT", AppBundle.INSTANCE.css().wsdotGoodToGoIcon()); twitterProfileImages.put("SnoqualmiePass", AppBundle.INSTANCE.css().wsdotSnoqualmiePassIcon()); twitterProfileImages.put("wsdot", AppBundle.INSTANCE.css().wsdotIcon()); twitterProfileImages.put("BerthaDigsSR99", AppBundle.INSTANCE.css().berthaDigsSR99Icon()); twitterProfileImages.put("wsdot_520", AppBundle.INSTANCE.css().wsdot520Icon()); twitterProfileImages.put("WSDOT_East", AppBundle.INSTANCE.css().wsdotEastIcon()); twitterProfileImages.put("wsdot_sw", AppBundle.INSTANCE.css().wsdotSwIcon()); twitterProfileImages.put("wsdot_tacoma", AppBundle.INSTANCE.css().wsdotTacomaIcon()); twitterProfileImages.put("wsdot_traffic", AppBundle.INSTANCE.css().wsdotTrafficIcon()); twitterProfileImages.put("WSDOTjobs", AppBundle.INSTANCE.css().wsdotJobsIcon()); PullArrowStandardHandler headerHandler = new PullArrowStandardHandler(view.getPullHeader(), view.getPullPanel()); headerHandler.setErrorText("Error"); headerHandler.setLoadingText("Loading"); headerHandler.setNormalText("pull down"); headerHandler.setPulledText("release to load"); headerHandler.setPullActionHandler(new PullActionHandler() { @Override public void onPullAction(final AsyncCallback<Void> callback) { new Timer() { @Override public void run() { createPostList(view, twitterScreenNames.get(view.getAccountSelected())); view.refresh(); callback.onSuccess(null); } }.schedule(1); } }); view.setHeaderPullHandler(headerHandler); createPostList(view, twitterScreenNames.get(view.getAccountSelected())); if (Consts.ANALYTICS_ENABLED) { analytics.trackScreen("/Social Media/Twitter"); } panel.setWidget(view); accessibility.postScreenChangeNotification(); } @Override public void onStop() { view.setPresenter(null); } @Override public void onItemSelected(int index) { if (Consts.ANALYTICS_ENABLED) { analytics.trackScreen("/Social Media/Twitter/Details Link"); } TwitterItem item = twitterItems.get(index); inAppBrowser.open("https://twitter.com/" + item.getScreenName() + "/status/" + item.getId(), "_blank", "enableViewportScale=yes,transitionstyle=fliphorizontal"); } @Override public void onAccountSelected(String screenName) { createPostList(view, twitterScreenNames.get(screenName)); } @Override public void onBackButtonPressed() { ActionEvent.fire(eventBus, ActionNames.BACK); } private void createPostList(final TwitterView view, String screenName) { String url; if (screenName.equals("all")) { url = TWITTER_FEED_URL; } else { url = TWITTER_FEED_URL + "/" + screenName; } twitterItems.clear(); view.showProgressIndicator(); JsonpRequestBuilder jsonp = new JsonpRequestBuilder(); // Set timeout for 30 seconds (30000 milliseconds) jsonp.setTimeout(30000); jsonp.requestObject(url, new AsyncCallback<TwitterFeed>() { @Override public void onFailure(Throwable caught) { view.hideProgressIndicator(); phoneGap.getNotification().alert("Can't load data. Check your connection.", new AlertCallback() { @Override public void onOkButtonClicked() { // TODO Auto-generated method stub } }, "Connection Error"); } @Override public void onSuccess(TwitterFeed result) { TwitterItem item = null; //String urlPattern = "(https?:\\/\\/[-a-zA-Z0-9._~:\\/?#@!$&\'()*+,;=%]+)"; //String atPattern = "@+([_a-zA-Z0-9-]+)"; //String hashPattern = "#+([_a-zA-Z0-9-]+)"; String text; //String htmlText; if (result.getPosts() != null) { int numEntries = result.getPosts().length(); for (int i = 0; i < numEntries; i++) { item = new TwitterItem(); //htmlText = ""; text = result.getPosts().get(i).getText(); //htmlText = text.replaceAll(urlPattern, "<a href=\"$1\">$1</a>"); //htmlText = htmlText.replaceAll(atPattern, "<a href=\"http://twitter.com/#!/$1\">@$1</a>"); //htmlText = htmlText.replaceAll(hashPattern, "<a href=\"http://twitter.com/#!/search?q=%23$1\">#$1</a>"); item.setText(text); item.setId(result.getPosts().get(i).getId()); item.setFormatedHtmlText(text); item.setScreenName(result.getPosts().get(i).getUser().getScreenName()); item.setCreatedAt(result.getPosts().get(i).getCreatedAt()); item.setUserName(result.getPosts().get(i).getUser().getName()); item.setProfileImage( twitterProfileImages.get(result.getPosts().get(i).getUser().getScreenName())); JsArray<Media> media = result.getPosts().get(i).getEntities().getMedia(); if (media != null) { item.setMediaUrl( result.getPosts().get(i).getEntities().getMedia().get(0).getMediaUrl()); } if (item.getMediaUrl() == null) { JsArray<Urls> urls = result.getPosts().get(i).getEntities().getUrls(); if (urls != null) { if (result.getPosts().get(i).getEntities().getUrls().get(0) != null) { String expandedUrl = result.getPosts().get(i).getEntities().getUrls().get(0) .getExpandedUrl(); if (expandedUrl.matches("(.*)twitpic.com(.*)")) { item.setMediaUrl(expandedUrl); } } } } if (item.getMediaUrl() == null) { item.setMediaUrl(""); } twitterItems.add(item); } view.hideProgressIndicator(); view.render(twitterItems); view.refresh(); accessibility.postScreenChangeNotification(); } } }); } private static SafeHtml makeImage(ImageResource resource) { AbstractImagePrototype image = AbstractImagePrototype.create(resource); String html = image.getHTML(); return SafeHtmlUtils.fromTrustedString(html); } }