Java tutorial
/******************************************************************************* * ALMA - Atacama Large Millimeter Array * Copyright (c) ESO - European Southern Observatory, 2011 * (in the framework of the ALMA collaboration). * All rights reserved. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *******************************************************************************/ package alma.acs.eventbrowser.parts; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.logging.Logger; import javax.annotation.PostConstruct; import javax.annotation.PreDestroy; import javax.inject.Inject; import javax.inject.Named; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.core.runtime.jobs.Job; import org.eclipse.e4.core.di.annotations.Optional; import org.eclipse.e4.core.services.statusreporter.StatusReporter; import org.eclipse.e4.ui.di.Focus; import org.eclipse.e4.ui.di.UISynchronize; import org.eclipse.e4.ui.model.application.ui.menu.MPopupMenu; import org.eclipse.e4.ui.services.IServiceConstants; import org.eclipse.e4.ui.workbench.modeling.ESelectionService; import org.eclipse.e4.ui.workbench.swt.modeling.EMenuService; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableColumn; import alma.acs.eventbrowser.model.EventData; import alma.acs.eventbrowser.model.EventModel; /** * Displays details of an event selected in the {@link EventListPart}. */ public class EventDetailPart { @Inject private UISynchronize uiSync; /** * We publish selected table rows to be used by the mouse menu handler. */ @Inject private ESelectionService selectionService; /** * Blocking (popup) status report. */ @Inject private StatusReporter statusReporter; private TableViewer viewer; private EventModel em; private DynAnyParser parser; private Logger logger; public EventDetailPart() { } @PostConstruct public void createPartControl(Composite parent, EMenuService menuService) { try { em = EventModel.getInstance(); } catch (Throwable thr) { thr.printStackTrace(); IStatus someStatus = statusReporter.newStatus(IStatus.ERROR, "Connection with NCs failed.", thr); statusReporter.report(someStatus, StatusReporter.SHOW); throw new RuntimeException(thr); } logger = em.getLogger(); viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL); Table table = viewer.getTable(); table.setHeaderVisible(true); table.setLinesVisible(true); GridLayout gridLayout = new GridLayout(); gridLayout.marginHeight = 0; gridLayout.marginWidth = 0; gridLayout.verticalSpacing = 0; parent.setLayout(gridLayout); TableViewerColumn tvcol = new TableViewerColumn(viewer, SWT.NONE, 0); tvcol.setLabelProvider(new DetailNameLabelProvider()); TableColumn col = tvcol.getColumn(); col.setText("Name"); col.setWidth(200); col.setAlignment(SWT.LEFT); tvcol = new TableViewerColumn(viewer, SWT.NONE, 1); tvcol.setLabelProvider(new DetailTypeLabelProvider()); col = tvcol.getColumn(); col.setText("Type"); col.setWidth(100); col.setAlignment(SWT.LEFT); tvcol = new TableViewerColumn(viewer, SWT.NONE, 2); tvcol.setLabelProvider(new DetailValueLabelProvider()); col = tvcol.getColumn(); col.setText("Value"); col.setWidth(200); col.setAlignment(SWT.LEFT); GridDataFactory.fillDefaults().grab(true, true).applyTo(viewer.getTable()); viewer.setContentProvider(new DetailContentProvider()); hookContextMenu(menuService); // Attach a selection listener to our table, which will post selections to the ESelectionService // to be processed by CopyDetailsToClipboardHandler viewer.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { IStructuredSelection selection = (IStructuredSelection) event.getSelection(); List<ParsedAnyData> parsedAnyList = new ArrayList<ParsedAnyData>(); for (Iterator<?> iterator = selection.iterator(); iterator.hasNext();) { ParsedAnyData parsedAny = (ParsedAnyData) iterator.next(); parsedAnyList.add(parsedAny); } selectionService.setSelection(parsedAnyList.toArray(new ParsedAnyData[0])); } }); } private void hookContextMenu(EMenuService menuService) { // For the case of popup (mouse) menus we must reference the menu ID from the file Application.e4xmi MPopupMenu menu = menuService.registerContextMenu(viewer.getTable(), "alma.acs.eventgui.popupmenu.eventdetail"); if (menu == null) { System.out.println("Damn, failed to register popup menu for the EventDetailPart table."); } } /** * Here we listen to event list selections. * This gets called by the selection service. */ @Inject public void setEvent(@Optional @Named(IServiceConstants.ACTIVE_SELECTION) EventData eventData) { if (eventData != null) { new ParseAndDisplayEventDetailsJob(eventData).schedule(); } } private class ParseAndDisplayEventDetailsJob extends Job { private EventData eventData; public ParseAndDisplayEventDetailsJob(EventData eventData) { super(ParseAndDisplayEventDetailsJob.class.getSimpleName()); this.eventData = eventData; } @Override protected IStatus run(IProgressMonitor monitor) { // todo: use hourglass cursor etc? final String eventName = eventData.getEventTypeName(); // TODO: port this to e4 // setContentDescription("Details of " + eventName); parser = new DynAnyParser(em.getDynAnyFactory(), eventData.getEventAny(), eventName); final ParsedAnyData[] results = parser.getParsedResults(monitor); if (monitor.isCanceled()) { return Status.CANCEL_STATUS; } uiSync.syncExec(new Runnable() { public void run() { viewer.setInput(results); } }); return Status.OK_STATUS; } } @Focus public void setFocus() { viewer.getTable().setFocus(); } @PreDestroy public void dispose() { } }