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.mpi.tg.eg.experiment.client.view; import com.google.gwt.safehtml.shared.SafeHtmlBuilder; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.Grid; 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.IsWidget; 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.mpi.tg.eg.experiment.client.ApplicationController; import nl.mpi.tg.eg.experiment.client.listener.PresenterEventListner; import nl.mpi.tg.eg.experiment.client.listener.SingleShotEventListner; /** * @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 Grid headerPanel = null; private final VerticalPanel borderedContentPanel; private final ScrollPanel scrollPanel; protected int HEADER_SIZE; public SimpleView() { footerPanel = new HorizontalPanel(); borderedContentPanel = new VerticalPanel(); borderedContentPanel.setStylePrimaryName("contentPanel"); footerPanel.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER); // addSouth(footerPanel, 50); scrollPanel = new ScrollPanel(); borderedContentPanel.add(scrollPanel); borderedContentPanel.add(footerPanel); footerPanel.setVisible(false); } public final 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 addInfoButton(final PresenterEventListner presenterListerner) { final Label headerButton = new Label(presenterListerner.getLabel()); headerButton.addStyleName("headerButton"); SingleShotEventListner singleShotEventListner = new SingleShotEventListner() { @Override protected void singleShotFired() { presenterListerner.eventFired(null, this); } }; headerButton.addClickHandler(singleShotEventListner); headerButton.addTouchStartHandler(singleShotEventListner); headerButton.addTouchMoveHandler(singleShotEventListner); headerButton.addTouchEndHandler(singleShotEventListner); headerPanel.setWidget(0, 2, headerButton); } public void addTitle(String label, final PresenterEventListner presenterListerner) { if (ApplicationController.SHOW_HEADER || presenterListerner != null) { HEADER_SIZE = 50; headerPanel = new Grid(1, 3); headerPanel.setWidth("100%"); headerPanel.setStylePrimaryName("headerPanel"); addNorth(headerPanel, HEADER_SIZE); final Label headerLabel = new Label(label); headerLabel.setStylePrimaryName("headerLabel"); headerPanel.setWidget(0, 0, new MenuButton(presenterListerner)); headerPanel.setWidget(0, 1, headerLabel); headerPanel.setStylePrimaryName("headerPanel"); headerPanel.getColumnFormatter().setWidth(1, "100%"); } else { HEADER_SIZE = 0; headerPanel = null; } add(borderedContentPanel); } public void addToFooter(IsWidget button) { footerPanel.setVisible(true); footerPanel.add(button); resizeView(); } 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); SingleShotEventListner singleShotEventListner = new SingleShotEventListner() { @Override protected void singleShotFired() { if (nextButton.isEnabled()) { presenterListerner.eventFired(nextButton, this); } else { resetSingleShot(); } } }; nextButton.addTouchStartHandler(singleShotEventListner); nextButton.addTouchMoveHandler(singleShotEventListner); nextButton.addTouchEndHandler(singleShotEventListner); nextButton.addClickHandler(singleShotEventListner); return nextButton; } public void removeFooterButtons() { footerPanel.clear(); 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) { final int footerHeight; if (footerPanel.getOffsetHeight() < HEADER_SIZE) { if (footerPanel.getWidget(0) instanceof VerticalPanel) { footerHeight = HEADER_SIZE * ((VerticalPanel) footerPanel.getWidget(0)).getWidgetCount(); } else { footerHeight = HEADER_SIZE; // footerPanel.getOffsetHeight(); } } else { footerHeight = footerPanel.getOffsetHeight(); } scrollPanel.setHeight( height - HEADER_SIZE - ((footerHeight < HEADER_SIZE) ? HEADER_SIZE : footerHeight) + "px"); } else { scrollPanel.setHeight(height - HEADER_SIZE + "px"); } setStyleByWidth(width); } }