Java tutorial
/*- * Copyright 2009 Diamond Light Source Ltd. * * This file is part of GDA. * * GDA is free software: you can redistribute it and/or modify it under the * terms of the GNU General Public License version 3 as published by the Free * Software Foundation. * * GDA 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 GDA. If not, see <http://www.gnu.org/licenses/>. */ package uk.ac.gda.ui.doe; import java.util.ArrayList; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IConfigurationElement; import org.eclipse.core.runtime.Platform; import org.eclipse.jface.action.MenuManager; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ColumnViewerToolTipSupport; import org.eclipse.jface.viewers.IContentProvider; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.jface.viewers.Viewer; import org.eclipse.jface.viewers.ViewerCell; import org.eclipse.jface.window.ToolTip; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableItem; import org.eclipse.ui.part.ViewPart; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import uk.ac.gda.doe.DOEUtils; import uk.ac.gda.doe.RangeInfo; public class DOEView extends ViewPart { private static Logger logger = LoggerFactory.getLogger(DOEView.class); public static final String ID = "uk.ac.gda.ui.doe.DOEView"; //$NON-NLS-1$ private TableViewer tableViewer; private List<RangeInfo> info; private DOEBeanProvider beansProvider; public DOEView() throws CoreException { IConfigurationElement[] config = Platform.getExtensionRegistry() .getConfigurationElementsFor("uk.ac.common.doe.beans"); for (IConfigurationElement e : config) { this.beansProvider = (DOEBeanProvider) e.createExecutableExtension("class"); break; } } /** * Create contents of the view part. * @param parent */ @Override public void createPartControl(Composite parent) { Composite container = new Composite(parent, SWT.NONE); container.setLayout(new GridLayout()); final Table table = new Table(container, SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.HIDE_SELECTION); GridData gridData = new GridData(GridData.FILL_BOTH); gridData.grabExcessVerticalSpace = true; gridData.horizontalSpan = 3; table.setLayoutData(gridData); table.setLinesVisible(true); table.setHeaderVisible(true); this.tableViewer = new TableViewer(table); tableViewer.setUseHashlookup(true); tableViewer.setContentProvider(createContentProvider()); ColumnViewerToolTipSupport.enableFor(tableViewer, ToolTip.NO_RECREATE); createRightClickMenu(); getSite().setSelectionProvider(tableViewer); getSite().getShell().getDisplay().asyncExec(new Runnable() { @Override public void run() { refresh(); } }); } private void createTableColumns() { // Dispose columns not the first. for (; tableViewer.getTable().getColumnCount() > 1;) tableViewer.getTable().getColumns()[1].dispose(); // Create experiment name column if required. if (tableViewer.getTable().getColumnCount() < 1) { final TableViewerColumn col = new TableViewerColumn(tableViewer, SWT.NONE, 0); col.getColumn().setText("Experiment"); col.setLabelProvider(new ColumnLabelProvider() { @Override public void update(ViewerCell cell) { final TableItem item = (TableItem) cell.getViewerRow().getItem(); final Table table = tableViewer.getTable(); int row = table.indexOf(item) + 1; cell.setText(" " + row); } }); col.getColumn().setWidth(120); } if (info == null) return; final Map<String, Class<?>> columns = new LinkedHashMap<String, Class<?>>(); for (RangeInfo i : info) columns.putAll(i.getColumnClasses()); final String[] columnLabels = getColumnLabels(columns); final String[] columnProperties = getColumnProperties(columns); for (int icolumn = 1; icolumn < columnLabels.length; icolumn++) { final TableViewerColumn col = new TableViewerColumn(tableViewer, SWT.NONE, icolumn); col.getColumn().setText(columnLabels[icolumn]); col.setLabelProvider(new FieldColumnProvider(columnProperties)); col.getColumn().setWidth(100); } tableViewer.setColumnProperties(columnProperties); tableViewer.setInput(new Object()); } private String[] getColumnLabels(Map<String, Class<?>> columns) { final List<String> columnLabels = new ArrayList<String>(columns.size() + 1); columnLabels.add("Run"); // The experiment number column for (String name : columns.keySet()) { String label = beansProvider.getColumnLabel(name, columns.get(name)); if (label == null) label = name; columnLabels.add(label); } return columnLabels.toArray(new String[columnLabels.size()]); } private String[] getColumnProperties(Map<String, Class<?>> columns) { final List<String> columnNames = new ArrayList<String>(columns.size() + 1); columnNames.add("Run"); // The experiment number column for (String name : columns.keySet()) columnNames.add(name); return columnNames.toArray(new String[columnNames.size()]); } private IContentProvider createContentProvider() { return new IStructuredContentProvider() { @Override public void dispose() { } @Override public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } @Override public Object[] getElements(Object inputElement) { try { return info.toArray(new RangeInfo[info.size()]); } catch (Exception e) { logger.error("Cannot get info from list", e); return null; } } }; } private void createInfo() throws Exception { final List<Object> obs = beansProvider.getBeans(); DOEView.this.info = DOEUtils.getInfoFromList(obs); } @Override public void setFocus() { tableViewer.getControl().setFocus(); } private void createRightClickMenu() { final MenuManager menuManager = new MenuManager(); tableViewer.getControl().setMenu(menuManager.createContextMenu(tableViewer.getControl())); getSite().registerContextMenu(menuManager, tableViewer); } public void refresh() { try { createInfo(); createTableColumns(); tableViewer.refresh(); } catch (Exception e) { logger.error("Cannot read ranges", e); } } }