Java tutorial
/******************************************************************************* * ALMA - Atacama Large Millimeter Array * Copyright (c) ESO - European Southern Observatory, 2013 * (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.Locale; import java.util.logging.Logger; import javax.annotation.PostConstruct; import javax.annotation.PreDestroy; import javax.inject.Inject; import org.eclipse.core.runtime.IStatus; import org.eclipse.e4.core.contexts.IEclipseContext; import org.eclipse.e4.core.services.events.IEventBroker; 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.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.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerFilter; 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; import alma.acs.eventbrowser.status.StatusLineWriter; /** * TODO: check http://tomsondev.bestsolution.at/2011/10/07/jface-viewer-and-eclipse-databinding-with-10-000-objects/ */ public class EventListPart implements IEventListPart { /** * We publish a single selected table row to be used by the event details part. */ @Inject private ESelectionService selectionService; @Inject private UISynchronize uiSync; private TableViewer viewer; private ViewerFilter tableFilter; private EventModel em; private PopulateEventList pel; private Logger logger; /** * Blocking (popup) status report. */ @Inject private StatusReporter statusReporter; private Thread eventListThread; /** * The constructor. */ public EventListPart() { } /** */ @PostConstruct public void postConstruct(Composite parent, final IEclipseContext context, IEventBroker eventBroker, 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(); GridLayout gridLayout = new GridLayout(); gridLayout.marginHeight = 0; gridLayout.marginWidth = 0; gridLayout.verticalSpacing = 0; parent.setLayout(gridLayout); // TODO: We currently have the filter text control in the regular view toolbar. // The e3 eventGUI had a "custom tool bar" inserted here. // We should decide which way it's better. viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION); Table table = viewer.getTable(); table.setHeaderVisible(true); table.setLinesVisible(true); /* * "Time "+timeStamp+" "+m_channelName+" "+component+" "+count+" * "+channelEventCount+" " +" "+evtTypeName+" * "+evtCounter.get(evtTypeName) */ TableViewerColumn tvcol = new TableViewerColumn(viewer, SWT.NONE, 0); tvcol.setLabelProvider(new TimeStampLabelProvider()); TableColumn col = tvcol.getColumn(); col.setText("Timestamp"); col.setWidth(180); col.setAlignment(SWT.LEFT); tvcol = new TableViewerColumn(viewer, SWT.NONE, 1); tvcol.setLabelProvider(new EventSourceLabelProvider()); col = tvcol.getColumn(); col.setText("Event source"); col.setWidth(150); col.setAlignment(SWT.LEFT); tvcol = new TableViewerColumn(viewer, SWT.NONE, 2); tvcol.setLabelProvider(new CountLabelProvider()); col = tvcol.getColumn(); col.setText("# Events in channel"); col.setWidth(50); col.setAlignment(SWT.LEFT); tvcol = new TableViewerColumn(viewer, SWT.NONE, 3); tvcol.setLabelProvider(new EventTypeLabelProvider()); col = tvcol.getColumn(); col.setText("Event type"); col.setWidth(150); col.setAlignment(SWT.LEFT); tvcol = new TableViewerColumn(viewer, SWT.NONE, 4); tvcol.setLabelProvider(new EventTypeCountLabelProvider()); col = tvcol.getColumn(); col.setText("# Events this type"); col.setWidth(50); col.setAlignment(SWT.LEFT); GridDataFactory.fillDefaults().grab(true, true).applyTo(viewer.getTable()); viewer.setContentProvider(new EventListViewContentProvider(em)); // Attach a selection listener to our event list that will post the selected event for the event details list viewer.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { IStructuredSelection selection = (IStructuredSelection) event.getSelection(); if (selection.size() == 1) { selectionService.setSelection(selection.getFirstElement()); } } }); viewer.setInput(new Object()); hookContextMenu(menuService); pel = new PopulateEventList(logger, viewer, new StatusLineWriter(eventBroker), em.getEventQueue(), "NC Events"); eventListThread = pel.getThreadForEventList(); eventListThread.start(); } /** * @see alma.acs.eventGui2.parts.IEventListPart#notifyEventTypeFilterChange(java.lang.String) */ @Override public void notifyEventTypeFilterChanged(final String filterText) { // System.out.println("EventListPart#notifyEventTypeFilterChange : " + filterText); if (tableFilter != null) { viewer.removeFilter(tableFilter); } tableFilter = new ViewerFilter() { @Override public boolean select(Viewer viewer, Object parentElement, Object element) { if (filterText.equals("")) { return true; } EventData row = (EventData) element; String column = row.getEventTypeName(); if (column.toUpperCase(Locale.ENGLISH).contains(filterText.toUpperCase(Locale.ENGLISH))) { return true; } return false; } }; viewer.addFilter(tableFilter); viewer.refresh(); } private void hookContextMenu(EMenuService menuService) { // For the case of popup (mouse) menues we actually reference the menu ID from the Application.e4xmi MPopupMenu menu = menuService.registerContextMenu(viewer.getTable(), "alma.acs.eventgui.popupmenu.eventlist"); if (menu == null) { System.out.println("EventListPart popup menu is null!"); } } @Override public void clearList() { // TODO: This asyncExec from the e3 impl is suspicious. Probably should run this as a Job in a non-UI thread and from there update the UI uiSync.asyncExec(new Runnable() { public void run() { viewer.getTable().removeAll(); viewer.refresh(); }; }); } @Focus public void setFocus() { viewer.getTable().setFocus(); } @PreDestroy public void preDestroy() { eventListThread.interrupt(); } }