Java tutorial
/******************************************************************************* * This file is part of OpenNMS(R). * * Copyright (C) 2013-2014 The OpenNMS Group, Inc. * OpenNMS(R) is Copyright (C) 1999-2014 The OpenNMS Group, Inc. * * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc. * * OpenNMS(R) 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. * * OpenNMS(R) 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 OpenNMS(R). If not, see: * http://www.gnu.org/licenses/ * * For more information contact: * OpenNMS(R) Licensing <license@opennms.org> * http://www.opennms.org/ * http://www.opennms.com/ *******************************************************************************/ package org.opennms.features.vaadin.dashboard.dashlets; import com.vaadin.data.Property; import com.vaadin.event.ShortcutAction; import com.vaadin.server.ExternalResource; import com.vaadin.server.Page; import com.vaadin.ui.*; import org.opennms.features.vaadin.dashboard.config.ui.WallboardConfigUI; import org.opennms.features.vaadin.dashboard.config.ui.WallboardProvider; import org.opennms.features.vaadin.dashboard.model.DashletConfigurationWindow; import org.opennms.features.vaadin.dashboard.model.DashletSpec; import org.opennms.netmgt.config.charts.BarChart; import org.opennms.web.charts.ChartUtils; import java.util.Iterator; /** * This class represents the configuration window for charts dashlets. * * @author Christian Pape */ public class ChartsConfigurationWindow extends DashletConfigurationWindow { /** * The {@link DashletSpec} to be used */ private DashletSpec m_dashletSpec; /** * The field for storing the 'boostSeverity' parameter */ private CheckBox m_maximizeWidth, m_maximizeHeight; private NativeSelect m_chartSelect; /** * Constructor for instantiating new objects of this class. * * @param dashletSpec the {@link DashletSpec} to be edited */ public ChartsConfigurationWindow(DashletSpec dashletSpec) { /** * Setting the members */ m_dashletSpec = dashletSpec; /** * Setting up the base layouts */ setHeight(410, Unit.PIXELS); setWidth(40, Unit.PERCENTAGE); HorizontalLayout horizontalLayout = new HorizontalLayout(); horizontalLayout.setWidth(100, Unit.PERCENTAGE); horizontalLayout.setSpacing(true); horizontalLayout.setMargin(true); FormLayout formLayout = new FormLayout(); formLayout.setWidth(100, Unit.PERCENTAGE); formLayout.setSpacing(true); formLayout.setMargin(true); /** * Adding the checkboxes */ m_maximizeWidth = new CheckBox(); m_maximizeWidth.setCaption("Maximize width"); m_maximizeWidth.setDescription("Maximize width"); m_maximizeHeight = new CheckBox(); m_maximizeHeight.setCaption("Maximize height"); m_maximizeHeight.setDescription("Maximize height"); String maximizeWidthString = m_dashletSpec.getParameters().get("maximizeWidth"); String maximizeHeightString = m_dashletSpec.getParameters().get("maximizeHeight"); boolean maximizeHeight = ("true".equals(maximizeHeightString) || "yes".equals(maximizeHeightString) || "1".equals(maximizeHeightString)); boolean maximizeWidth = ("true".equals(maximizeWidthString) || "yes".equals(maximizeWidthString) || "1".equals(maximizeWidthString)); m_maximizeWidth.setValue(maximizeWidth); m_maximizeHeight.setValue(maximizeHeight); m_chartSelect = new NativeSelect(); m_chartSelect.setDescription("Select chart to be displayed"); m_chartSelect.setCaption("Chart"); m_chartSelect.setNullSelectionAllowed(false); m_chartSelect.setInvalidAllowed(false); m_chartSelect.setNewItemsAllowed(false); String firstChartName = null; try { Iterator<BarChart> it = ChartUtils.getChartCollectionIterator(); while (it.hasNext()) { BarChart chartConfig = (BarChart) it.next(); if (firstChartName == null) { firstChartName = chartConfig.getName(); } m_chartSelect.addItem(chartConfig.getName()); } } catch (Exception e) { e.printStackTrace(); } String chartName = m_dashletSpec.getParameters().get("chart"); if (chartName == null || "".equals(chartName)) { chartName = firstChartName; } final Panel panel = new Panel(); panel.setWidth(230, Unit.PIXELS); panel.setCaption("Preview"); formLayout.addComponent(m_chartSelect); Page.getCurrent().getStyles().add(".preview { width:225px; }"); m_chartSelect.addValueChangeListener(new Property.ValueChangeListener() { @Override public void valueChange(Property.ValueChangeEvent valueChangeEvent) { String newImage = "/opennms/charts?chart-name=" + valueChangeEvent.getProperty().getValue(); Image image = new Image(null, new ExternalResource(newImage)); image.setStyleName("preview"); panel.setContent(image); } }); m_chartSelect.setValue(chartName); m_chartSelect.setImmediate(true); formLayout.addComponent(m_maximizeWidth); formLayout.addComponent(m_maximizeHeight); horizontalLayout.addComponent(formLayout); horizontalLayout.addComponent(panel); /** * Using an additional {@link com.vaadin.ui.HorizontalLayout} for layouting the buttons */ HorizontalLayout buttonLayout = new HorizontalLayout(); buttonLayout.setMargin(true); buttonLayout.setSpacing(true); buttonLayout.setWidth("100%"); /** * Adding the cancel button... */ Button cancel = new Button("Cancel"); cancel.setDescription("Cancel editing"); cancel.addClickListener(new Button.ClickListener() { @Override public void buttonClick(Button.ClickEvent event) { close(); } }); cancel.setClickShortcut(ShortcutAction.KeyCode.ESCAPE, null); buttonLayout.addComponent(cancel); buttonLayout.setExpandRatio(cancel, 1.0f); buttonLayout.setComponentAlignment(cancel, Alignment.TOP_RIGHT); /** * ...and the OK button */ Button ok = new Button("Save"); ok.setDescription("Save properties and close"); ok.addClickListener(new Button.ClickListener() { @Override public void buttonClick(Button.ClickEvent event) { m_dashletSpec.getParameters().put("maximizeWidth", (m_maximizeWidth.getValue() ? "true" : "false")); m_dashletSpec.getParameters().put("maximizeHeight", (m_maximizeHeight.getValue() ? "true" : "false")); m_dashletSpec.getParameters().put("chart", String.valueOf(m_chartSelect.getValue())); WallboardProvider.getInstance().save(); ((WallboardConfigUI) getUI()).notifyMessage("Data saved", "Properties"); close(); } }); ok.setClickShortcut(ShortcutAction.KeyCode.ENTER, null); buttonLayout.addComponent(ok); /** * Adding the layout and setting the content */ //verticalLayout.addComponent(buttonLayout); VerticalLayout verticalLayout = new VerticalLayout(); verticalLayout.addComponent(horizontalLayout); verticalLayout.addComponent(buttonLayout); setContent(verticalLayout); } }