Java tutorial
/* * Copyright (c) 2015 Data Harmonisation Panel * * All rights reserved. This program and the accompanying materials are made * available under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, either version 3 of the License, * or (at your option) any later version. * * You should have received a copy of the GNU Lesser General Public License * along with this distribution. If not, see <http://www.gnu.org/licenses/>. * * Contributors: * Data Harmonisation Panel <http://www.dhpanel.eu> */ package eu.esdihumboldt.hale.ui.io.project.update; import java.util.List; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.layout.TableColumnLayout; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.ColumnWeightData; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IDoubleClickListener; import org.eclipse.jface.viewers.ISelection; 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.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import eu.esdihumboldt.hale.common.core.io.ImportProvider; import eu.esdihumboldt.hale.common.core.io.extension.IOProviderExtension; import eu.esdihumboldt.hale.common.core.io.project.model.IOConfiguration; import eu.esdihumboldt.hale.common.schema.SchemaSpaceID; import eu.esdihumboldt.hale.ui.HaleUI; import eu.esdihumboldt.hale.ui.io.schema.SchemaImportAdvisor; import eu.esdihumboldt.hale.ui.io.schema.SchemaImportWizard; import eu.esdihumboldt.hale.ui.util.wizard.HaleWizardDialog; /** * Component that allows updating a schema location / configuration. * * @author Simon Templer */ public class SchemaUpdateComponent extends Composite { private Button updateButton; private TableViewer tableViewer; private String actionId; private List<IOConfiguration> configurations; /** * Constructor. * * @param parent the parent composite * @param actionId the action ID * @param configurations the list of configurations (the component may make * changes to this list) */ public SchemaUpdateComponent(Composite parent, final String actionId, final List<IOConfiguration> configurations) { super(parent, SWT.NONE); this.actionId = actionId; this.configurations = configurations; GridLayoutFactory.swtDefaults().numColumns(2).applyTo(this); // intro label Label intro = new Label(this, SWT.WRAP); intro.setText("Please select a schema from the list to update/replace it:"); GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(intro); // viewer with schema list Composite tableContainer = new Composite(this, SWT.NONE); tableContainer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); TableColumnLayout layout = new TableColumnLayout(); tableContainer.setLayout(layout); tableViewer = new TableViewer(tableContainer, SWT.SINGLE | SWT.FULL_SELECTION | SWT.BORDER); tableViewer.getTable().setLinesVisible(true); tableViewer.getTable().setHeaderVisible(true); tableViewer.setContentProvider(ArrayContentProvider.getInstance()); tableViewer.addFilter(new ViewerFilter() { @Override public boolean select(Viewer viewer, Object parentElement, Object element) { if (element instanceof IOConfiguration) { return actionId.equals(((IOConfiguration) element).getActionId()); } return false; } }); TableViewerColumn typeColumn = new TableViewerColumn(tableViewer, SWT.NONE); layout.setColumnData(typeColumn.getColumn(), new ColumnWeightData(1)); typeColumn.getColumn().setText("Type"); typeColumn.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { IOConfiguration config = (IOConfiguration) element; return IOProviderExtension.getInstance().getFactory(config.getProviderId()).getDisplayName(); } }); TableViewerColumn locationColumn = new TableViewerColumn(tableViewer, SWT.NONE); layout.setColumnData(locationColumn.getColumn(), new ColumnWeightData(3)); locationColumn.getColumn().setText("Location"); locationColumn.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { IOConfiguration config = (IOConfiguration) element; return config.getProviderConfiguration().get(ImportProvider.PARAM_SOURCE).toString(); } }); tableViewer.setInput(configurations); tableViewer.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { updateState(); } }); tableViewer.addDoubleClickListener(new IDoubleClickListener() { @Override public void doubleClick(DoubleClickEvent event) { updateSelectedSchema(); } }); // update button updateButton = new Button(this, SWT.PUSH); GridDataFactory.swtDefaults().align(SWT.BEGINNING, SWT.BEGINNING).applyTo(updateButton); updateButton.setText("Update"); updateButton.setToolTipText("Update/replace the selected schema"); updateButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { updateSelectedSchema(); } }); // initial state update updateState(); } /** * */ protected void updateSelectedSchema() { ISelection sel = tableViewer.getSelection(); if (!sel.isEmpty() && sel instanceof IStructuredSelection) { final IOConfiguration selected = (IOConfiguration) ((IStructuredSelection) sel).getFirstElement(); SchemaImportWizard wizard = new SchemaImportWizard() { @Override public boolean performFinish() { if (!applyConfiguration()) { return false; } IOConfiguration configuration = new IOConfiguration(); configuration.setActionId(getActionId()); configuration.setProviderId(getProviderFactory().getIdentifier()); getProvider().storeConfiguration(configuration.getProviderConfiguration()); // replace the previously selected I/O configuration int index = configurations.indexOf(selected); configurations.set(index, configuration); // refresh table viewer to reflect the changes tableViewer.refresh(true); return true; } }; // configure advisor // FIXME SchemaImportAdvisor advisor = new SchemaImportAdvisor(SchemaSpaceID.TARGET); advisor.setServiceProvider(HaleUI.getServiceProvider()); wizard.setAdvisor(advisor, actionId); // open wizard Shell shell = Display.getCurrent().getActiveShell(); HaleWizardDialog dialog = new HaleWizardDialog(shell, wizard); dialog.open(); } } /** * Update the component state. */ private void updateState() { boolean selected = !tableViewer.getSelection().isEmpty(); updateButton.setEnabled(selected); } }