Java tutorial
/* * Copyright (C) 2014 Language In Interaction * * 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 2 * 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, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ package nl.ru.languageininteraction.language.client.view; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.TouchEndEvent; import com.google.gwt.event.dom.client.TouchEndHandler; import com.google.gwt.safehtml.shared.SafeHtmlBuilder; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.HasHorizontalAlignment; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.Panel; import com.google.gwt.user.client.ui.ScrollPanel; import com.google.gwt.user.client.ui.VerticalPanel; import nl.ru.languageininteraction.language.client.listener.PresenterEventListner; /** * @since Oct 7, 2014 2:06:28 PM (creation date) * @author Peter Withers <p.withers@psych.ru.nl> */ public class SimpleView extends AbstractView { public enum ButtonType { menu, back, next } private final HorizontalPanel footerPanel; private final HorizontalPanel headerPanel; private final VerticalPanel borderedContentPanel; private final ScrollPanel scrollPanel; public SimpleView() { headerPanel = new HorizontalPanel(); headerPanel.setStylePrimaryName("headerPanel"); footerPanel = new HorizontalPanel(); borderedContentPanel = new VerticalPanel(); borderedContentPanel.setStylePrimaryName("contentPanel"); footerPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER); addNorth(headerPanel, HEADER_SIZE); // addSouth(footerPanel, 50); scrollPanel = new ScrollPanel(); borderedContentPanel.add(scrollPanel); borderedContentPanel.add(footerPanel); footerPanel.setVisible(false); add(borderedContentPanel); } public void setContent(Panel panel) { panel.setStylePrimaryName("contentBody"); scrollPanel.setWidget(panel); } public void setDisplayText(String text) { final HTML html = new HTML(new SafeHtmlBuilder().appendEscapedLines(text).toSafeHtml()); html.setStylePrimaryName("contentBody"); scrollPanel.setWidget(html); } public void addTitle(String label, final PresenterEventListner presenterListerner) { final Label headerIcon = new Label(); headerIcon.addStyleName("headerIcon"); final Label headerLabel = new Label(label); headerLabel.setStylePrimaryName("headerLabel"); if (presenterListerner != null) { final Label headerArrow = new Label(); headerArrow.addStyleName("headerArrow"); headerPanel.add(headerArrow); final Label headerButton = new Label(presenterListerner.getLabel()); headerButton.addStyleName("headerButton"); headerPanel.add(headerButton); final ClickHandler backHandler = new ClickHandler() { @Override public void onClick(ClickEvent event) { event.preventDefault(); presenterListerner.eventFired(null); } }; headerArrow.addClickHandler(backHandler); headerButton.addClickHandler(backHandler); headerIcon.addClickHandler(backHandler); final TouchEndHandler touchEndHandler = new TouchEndHandler() { @Override public void onTouchEnd(TouchEndEvent event) { event.preventDefault(); presenterListerner.eventFired(null); } }; headerArrow.addTouchEndHandler(touchEndHandler); headerButton.addTouchEndHandler(touchEndHandler); headerIcon.addTouchEndHandler(touchEndHandler); } headerPanel.add(headerIcon); headerPanel.add(headerLabel); } public Button setButton(ButtonType buttonType, final PresenterEventListner presenterListerner) { footerPanel.setVisible(true); final Button nextButton = new Button(presenterListerner.getLabel()); nextButton.addStyleName(buttonType.name() + "Button"); nextButton.setEnabled(true); footerPanel.add(nextButton); nextButton.addTouchEndHandler(new TouchEndHandler() { @Override public void onTouchEnd(TouchEndEvent event) { event.preventDefault(); presenterListerner.eventFired(nextButton); } }); nextButton.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { event.preventDefault(); presenterListerner.eventFired(nextButton); } }); return nextButton; } public void removeButton(Button button) { footerPanel.remove(button); footerPanel.setVisible(footerPanel.getWidgetCount() > 0); } protected void scrollToPosition(int position) { scrollPanel.setVerticalScrollPosition( scrollPanel.getVerticalScrollPosition() + position - scrollPanel.getAbsoluteTop()); } @Override protected void parentResized(int height, int width, String units) { footerPanel.setWidth(width + "px"); scrollPanel.setWidth(width + "px"); if (footerPanel.getWidgetCount() > 0) { scrollPanel.setHeight(height - HEADER_SIZE - HEADER_SIZE + "px"); } else { scrollPanel.setHeight(height - HEADER_SIZE + "px"); } } protected static final int HEADER_SIZE = 50; }