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.trafficmap.menu.expresslanes; 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.util.Consts; import gov.wa.wsdot.mobile.shared.ExpressLaneItem; import gov.wa.wsdot.mobile.shared.ExpressLanesFeed; import gov.wa.wsdot.mobile.shared.Topic; import java.util.ArrayList; import java.util.HashMap; public class SeattleExpressLanesActivity extends MGWTAbstractActivity implements SeattleExpressLanesView.Presenter { private final ClientFactory clientFactory; private SeattleExpressLanesView view; private EventBus eventBus; private PhoneGap phoneGap; private Accessibility accessibility; private InAppBrowser inAppBrowser; private static final String EXPRESS_LANES_URL = Consts.HOST_URL + "/traveler/api/expresslanes"; public SeattleExpressLanesActivity(ClientFactory clientFactory) { this.clientFactory = clientFactory; } @Override public void start(AcceptsOneWidget panel, EventBus eventBus) { view = clientFactory.getSeattleExpressLanesView(); this.eventBus = eventBus; this.phoneGap = this.clientFactory.getPhoneGap(); accessibility = clientFactory.getAccessibility(); view.setPresenter(this); view.getPullHeader().setHTML("pull down"); inAppBrowser = this.phoneGap.getInAppBrowser(); 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.refresh(); callback.onSuccess(null); } }.schedule(1); } }); view.setHeaderPullHandler(headerHandler); createPostList(); createSchedulesLink(); panel.setWidget(view); accessibility.postScreenChangeNotification(); } private void createPostList() { view.showProgressIndicator(); JsonpRequestBuilder jsonp = new JsonpRequestBuilder(); // Set timeout for 30 seconds (30000 milliseconds) jsonp.setTimeout(30000); jsonp.requestObject(EXPRESS_LANES_URL, new AsyncCallback<ExpressLanesFeed>() { @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(ExpressLanesFeed result) { ExpressLaneItem item = null; if (result.getExpressLanes() != null) { ArrayList<ExpressLaneItem> expressLaneItems = new ArrayList<ExpressLaneItem>(); HashMap<Integer, String> routeIcon = new HashMap<Integer, String>(); routeIcon.put(5, AppBundle.INSTANCE.css().i5Icon()); routeIcon.put(90, AppBundle.INSTANCE.css().i90Icon()); int numEntries = result.getExpressLanes().getRoutes().length(); for (int i = 0; i < numEntries; i++) { item = new ExpressLaneItem(); item.setStatus(result.getExpressLanes().getRoutes().get(i).getStatus()); item.setRoute(result.getExpressLanes().getRoutes().get(i).getRoute()); item.setTitle(result.getExpressLanes().getRoutes().get(i).getTitle()); item.setUpdated(result.getExpressLanes().getRoutes().get(i).getUpdated()); item.setRouteIcon(routeIcon.get(result.getExpressLanes().getRoutes().get(i).getRoute())); expressLaneItems.add(item); } view.hideProgressIndicator(); view.render(expressLaneItems); view.refresh(); accessibility.postScreenChangeNotification(); } } }); } private void createSchedulesLink() { ArrayList<Topic> schedules = new ArrayList<Topic>(); schedules.add(new Topic("Check Express Lanes Schedule")); view.scheduleRender(schedules); } @Override public void onStop() { view.setPresenter(null); } @Override public void onBackButtonPressed() { ActionEvent.fire(eventBus, ActionNames.BACK); } private static SafeHtml makeImage(ImageResource resource) { AbstractImagePrototype image = AbstractImagePrototype.create(resource); String html = image.getHTML(); return SafeHtmlUtils.fromTrustedString(html); } @Override public void onItemSelected(int index) { inAppBrowser.open("http://www.wsdot.wa.gov/Northwest/King/ExpressLanes", "_blank", "enableViewportScale=yes,transitionstyle=fliphorizontal"); } }