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.borderwait; import com.google.gwt.aria.client.Roles; import com.google.gwt.aria.client.SelectedValue; import com.google.gwt.core.client.GWT; import com.google.gwt.event.logical.shared.SelectionEvent; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.uibinder.client.UiHandler; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.Widget; import com.googlecode.mgwt.dom.client.event.tap.TapEvent; import com.googlecode.mgwt.ui.client.MGWT; import com.googlecode.mgwt.ui.client.widget.base.HasRefresh; import com.googlecode.mgwt.ui.client.widget.header.HeaderTitle; import com.googlecode.mgwt.ui.client.widget.list.celllist.CellList; import com.googlecode.mgwt.ui.client.widget.panel.flex.FlexSpacer; import com.googlecode.mgwt.ui.client.widget.panel.flex.RootFlexPanel; import com.googlecode.mgwt.ui.client.widget.panel.pull.PullArrowHeader; import com.googlecode.mgwt.ui.client.widget.panel.pull.PullArrowWidget; import com.googlecode.mgwt.ui.client.widget.panel.pull.PullPanel; import com.googlecode.mgwt.ui.client.widget.panel.pull.PullPanel.Pullhandler; import com.googlecode.mgwt.ui.client.widget.progress.ProgressIndicator; import com.googlecode.mgwt.ui.client.widget.tabbar.TabPanel; import gov.wa.wsdot.mobile.client.util.ParserUtils; import gov.wa.wsdot.mobile.client.widget.button.image.BackImageButton; import gov.wa.wsdot.mobile.client.widget.tabbar.NorthboundTabBarButton; import gov.wa.wsdot.mobile.client.widget.tabbar.SouthboundTabBarButton; import gov.wa.wsdot.mobile.shared.BorderWaitItem; import java.util.List; public class BorderWaitViewGwtImpl extends Composite implements BorderWaitView { /** * The UiBinder interface. */ interface BorderWaitViewGwtImplUiBinder extends UiBinder<Widget, BorderWaitViewGwtImpl> { } /** * The UiBinder used to generate the view. */ private static BorderWaitViewGwtImplUiBinder uiBinder = GWT.create(BorderWaitViewGwtImplUiBinder.class); @UiField HeaderTitle heading; @UiField BackImageButton backButton; @UiField FlexSpacer leftFlexSpacer; @UiField(provided = true) PullPanel northboundPullToRefresh; @UiField(provided = true) CellList<BorderWaitItem> northbound; @UiField(provided = true) PullPanel southboundPullToRefresh; @UiField(provided = true) CellList<BorderWaitItem> southbound; @UiField ProgressIndicator northboundProgressIndicator; @UiField ProgressIndicator southboundProgressIndicator; @UiField RootFlexPanel northPanel; @UiField RootFlexPanel southPanel; @UiField TabPanel tabPanel; @UiField NorthboundTabBarButton northTab; @UiField SouthboundTabBarButton southTab; private Presenter presenter; private PullArrowHeader northboundPullArrowHeader; private PullArrowHeader southboundPullArrowHeader; public BorderWaitViewGwtImpl() { northboundPullToRefresh = new PullPanel(); northboundPullArrowHeader = new PullArrowHeader(); northboundPullToRefresh.setHeader(northboundPullArrowHeader); southboundPullToRefresh = new PullPanel(); southboundPullArrowHeader = new PullArrowHeader(); southboundPullToRefresh.setHeader(southboundPullArrowHeader); northbound = new CellList<BorderWaitItem>(new BorderWaitCell<BorderWaitItem>() { @Override public String getDisplayImage(BorderWaitItem model) { return model.getRouteIcon(); } @Override public String getDisplayString(BorderWaitItem model) { return model.getTitle() + " (" + model.getLane() + ")"; } @Override public String getDisplayLastUpdated(BorderWaitItem model) { return ParserUtils.relativeTime(model.getUpdated(), "yyyy-MM-dd h:mm a", false); } @Override public String getDisplayWaitTime(BorderWaitItem model) { int wait = model.getWait(); String waitTime; if (wait == -1) { waitTime = "N/A"; } else if (wait < 5) { waitTime = "< 5 min"; } else { waitTime = wait + " min"; } return waitTime; } }); southbound = new CellList<BorderWaitItem>(new BorderWaitCell<BorderWaitItem>() { @Override public String getDisplayImage(BorderWaitItem model) { return model.getRouteIcon(); } @Override public String getDisplayString(BorderWaitItem model) { return model.getTitle() + " (" + model.getLane() + ")"; } @Override public String getDisplayLastUpdated(BorderWaitItem model) { return ParserUtils.relativeTime(model.getUpdated(), "yyyy-MM-dd h:mm a", false); } @Override public String getDisplayWaitTime(BorderWaitItem model) { int wait = model.getWait(); String waitTime; if (wait == -1) { waitTime = "N/A"; } else if (wait < 5) { waitTime = "< 5 min"; } else { waitTime = wait + " min"; } return waitTime; } }); initWidget(uiBinder.createAndBindUi(this)); accessibilityPrepare(); if (MGWT.getOsDetection().isAndroid()) { leftFlexSpacer.setVisible(false); } } @UiHandler("tabPanel") protected void onTabSelected(SelectionEvent<Integer> event) { if (presenter != null) { int index = event.getSelectedItem(); presenter.onTabSelected(index); } } @UiHandler("backButton") protected void onBackButtonPressed(TapEvent event) { if (presenter != null) { presenter.onBackButtonPressed(); } } @UiHandler("northTab") protected void on167TabPressed(TapEvent event) { accessibilityShowNorth(); } @UiHandler("southTab") protected void on405TabPressed(TapEvent event) { accessibilityShowSouth(); } @Override public void setPresenter(Presenter presenter) { this.presenter = presenter; } @Override public void renderNorthbound(List<BorderWaitItem> createNorthboundList) { northbound.render(createNorthboundList); } @Override public void renderSouthbound(List<BorderWaitItem> createSouthboundList) { southbound.render(createSouthboundList); } @Override public void refresh() { tabPanel.tabContainer.refresh(); northboundPullToRefresh.refresh(); southboundPullToRefresh.refresh(); } @Override public void showProgressIndicator() { northboundProgressIndicator.setVisible(true); southboundProgressIndicator.setVisible(true); } @Override public void hideProgressIndicator() { northboundProgressIndicator.setVisible(false); southboundProgressIndicator.setVisible(false); } @Override public void setNorthboundHeaderPullHandler(Pullhandler pullHandler) { northboundPullToRefresh.setHeaderPullHandler(pullHandler); } @Override public void setSouthboundHeaderPullHandler(Pullhandler pullHandler) { southboundPullToRefresh.setHeaderPullHandler(pullHandler); } @Override public PullArrowWidget getNorthboundPullHeader() { return northboundPullArrowHeader; } @Override public PullArrowWidget getSouthboundPullHeader() { return southboundPullArrowHeader; } @Override public HasRefresh getNorthboundPullPanel() { return northboundPullToRefresh; } @Override public HasRefresh getSouthboundPullPanel() { return southboundPullToRefresh; } private void accessibilityShowNorth() { Roles.getMainRole().setAriaHiddenState(northPanel.getElement(), false); Roles.getMainRole().setAriaHiddenState(southPanel.getElement(), true); Roles.getTabRole().setAriaSelectedState(northTab.getElement(), SelectedValue.TRUE); Roles.getTabRole().setAriaSelectedState(southTab.getElement(), SelectedValue.FALSE); } private void accessibilityShowSouth() { Roles.getMainRole().setAriaHiddenState(northPanel.getElement(), true); Roles.getMainRole().setAriaHiddenState(southPanel.getElement(), false); Roles.getTabRole().setAriaSelectedState(northTab.getElement(), SelectedValue.FALSE); Roles.getTabRole().setAriaSelectedState(southTab.getElement(), SelectedValue.TRUE); } private void accessibilityPrepare() { // Add ARIA roles for accessibility Roles.getButtonRole().set(backButton.getElement()); Roles.getButtonRole().setAriaLabelProperty(backButton.getElement(), "back"); Roles.getHeadingRole().set(heading.getElement()); Roles.getMainRole().set(northPanel.getElement()); Roles.getMainRole().set(southPanel.getElement()); Roles.getTabRole().set(northTab.getElement()); Roles.getTabRole().setAriaSelectedState(northTab.getElement(), SelectedValue.TRUE); Roles.getTabRole().setAriaLabelProperty(northTab.getElement(), "north bound"); Roles.getTabRole().set(southTab.getElement()); Roles.getTabRole().setAriaSelectedState(southTab.getElement(), SelectedValue.FALSE); Roles.getTabRole().setAriaLabelProperty(southTab.getElement(), "south bound"); Roles.getProgressbarRole().set(northboundProgressIndicator.getElement()); Roles.getProgressbarRole().setAriaLabelProperty(northboundProgressIndicator.getElement(), "loading indicator"); Roles.getProgressbarRole().set(southboundProgressIndicator.getElement()); Roles.getProgressbarRole().setAriaLabelProperty(southboundProgressIndicator.getElement(), "loading indicator"); // TODO Hide pull down until we can figure out how to get VoiceOver to work with it Roles.getButtonRole().setAriaHiddenState(northboundPullArrowHeader.getElement(), true); Roles.getButtonRole().setAriaHiddenState(southboundPullArrowHeader.getElement(), true); accessibilityShowNorth(); } }