Java tutorial
/* * This file is part of RaceTrace-Adminpanel * Copyright (C) 2012 Vaadin Oy * Copyright (C) 2013 Jonni Nakari <jonni@egarden.fi> * RaceTrace-Adminpanel is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * RaceTrace-Adminpanel 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 Affero General Public License for more details. * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package fi.racetrace.adminpanel.ui.columngenerator; import java.text.SimpleDateFormat; import java.util.Date; import com.vaadin.data.Property.ValueChangeEvent; import com.vaadin.data.Property.ValueChangeListener; import com.vaadin.data.util.BeanItem; import com.vaadin.server.Sizeable.Unit; import com.vaadin.ui.Component; import com.vaadin.ui.Label; import com.vaadin.ui.Slider; import com.vaadin.ui.Table; import com.vaadin.ui.VerticalLayout; import fi.racetrace.adminpanel.data.SessionDevice; public class TrailLengthGC implements Table.ColumnGenerator { @Override public Object generateCell(Table source, Object itemId, Object columnId) { Component c = null; if (source.isEditable() && itemId.equals(source.getValue())) { VerticalLayout vl = new VerticalLayout(); c = vl; final SessionDevice sessionDevice = (SessionDevice) itemId; Slider slider = new Slider(0, 60 * 20); vl.addComponent(slider); final Label label = new Label(formatSeconds(sessionDevice.getTrailLength())); vl.addComponent(label); slider.setPropertyDataSource(new BeanItem<SessionDevice>(sessionDevice).getItemProperty("trailLength")); slider.setWidth(100, Unit.PERCENTAGE); slider.addValueChangeListener(new ValueChangeListener() { @Override public void valueChange(ValueChangeEvent event) { Double length = Double.parseDouble(event.getProperty().getValue().toString()); label.setValue(formatSeconds(length)); // sessionDevice.setTrailLength(length); } }); } else { Label l = new Label(formatSeconds(((SessionDevice) itemId).getTrailLength())); c = l; } return c; } public static String formatSeconds(double seconds) { Date date = new Date((long) seconds * 1000); String format = null; if (seconds % 60 == 0) { format = "m 'min'"; } else { format = "m 'min,' s 'sec'"; } SimpleDateFormat df = new SimpleDateFormat(format); return df.format(date); } }