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.io.wfs.ui; import java.io.IOException; import java.io.OutputStream; import java.net.URI; import org.eclipse.core.runtime.Platform; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.preference.FieldEditor; import org.eclipse.jface.util.IPropertyChangeListener; import org.eclipse.jface.util.PropertyChangeEvent; import org.eclipse.jface.viewers.ComboViewer; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.wizard.WizardDialog; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridLayout; 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 eu.esdihumboldt.hale.common.core.io.supplier.LocatableOutputSupplier; import eu.esdihumboldt.hale.io.wfs.WFSConstants; import eu.esdihumboldt.hale.io.wfs.WFSVersion; import eu.esdihumboldt.hale.io.wfs.WFSWriter; import eu.esdihumboldt.hale.ui.io.target.AbstractTarget; import eu.esdihumboldt.hale.ui.util.io.URIFieldEditor; import eu.esdihumboldt.hale.ui.util.viewer.EnumContentProvider; import eu.esdihumboldt.hale.ui.util.wizard.HaleWizardDialog; /** * Select a WFS as target. * * @author Simon Templer */ public class WFSTarget extends AbstractTarget<WFSWriter> implements WFSConstants { private URIFieldEditor targetURL; private ComboViewer selectVersion; @Override public void createControls(Composite parent) { GridLayout layout = new GridLayout(3, false); parent.setLayout(layout); // target URL field targetURL = new URIFieldEditor("targetURL", "Transaction URL", parent) { // the following methods are overridden so the capabilities button // may appear on the same line @Override public int getNumberOfControls() { return super.getNumberOfControls() + 1; } @Override protected void doFillIntoGrid(Composite parent, int numColumns) { super.doFillIntoGrid(parent, numColumns - 1); } }; targetURL.setPage(getPage()); targetURL.setPropertyChangeListener(new IPropertyChangeListener() { @Override public void propertyChange(PropertyChangeEvent event) { if (event.getProperty().equals(FieldEditor.IS_VALID)) { getPage().setMessage(null); updateState(); } else if (event.getProperty().equals(FieldEditor.VALUE)) { getPage().setMessage(null); updateState(); } } }); // button to determine from capabilities Button capButton = new Button(parent, SWT.PUSH); capButton.setText("..."); capButton.setToolTipText("Determine based on WFS Capabilities"); capButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { WFSTransactionConfig config = new WFSTransactionConfig(); ISelection versionSel = selectVersion.getSelection(); if (!versionSel.isEmpty() && versionSel instanceof IStructuredSelection) { WFSVersion version = (WFSVersion) ((IStructuredSelection) versionSel).getFirstElement(); config.setVersion(version); } WFSTransactionWizard wizard = new WFSTransactionWizard(config); HaleWizardDialog dialog = new HaleWizardDialog(Display.getCurrent().getActiveShell(), wizard); if (dialog.open() == WizardDialog.OK) { WFSTransactionConfig result = wizard.getConfiguration(); // apply result targetURL.setStringValue(result.getTransactionUri().toString()); if (result.getVersion() != null) { selectVersion.setSelection(new StructuredSelection(result.getVersion())); } else { selectVersion.setSelection(new StructuredSelection()); } } } }); // select version Label versionLabel = new Label(parent, SWT.NONE); versionLabel.setText("WFS Version"); selectVersion = new ComboViewer(parent); GridDataFactory.swtDefaults().span(1, 1).grab(true, false).align(SWT.FILL, SWT.CENTER) .applyTo(selectVersion.getControl()); selectVersion.setContentProvider(EnumContentProvider.getInstance()); selectVersion.setLabelProvider(new LabelProvider() { @Override public String getText(Object element) { if (element instanceof WFSVersion) { return ((WFSVersion) element).versionString; } return super.getText(element); } }); selectVersion.setInput(WFSVersion.class); selectVersion.addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { updateState(); } }); // fixed content type setContentType(Platform.getContentTypeManager().getContentType(CONTENT_TYPE_ID_WFST)); // initial state update updateState(); } /** * Update the page state. */ protected void updateState() { setValid(targetURL.isValid() && !selectVersion.getSelection().isEmpty()); } @Override public boolean updateConfiguration(WFSWriter provider) { if (targetURL.isValid()) { final URI url = targetURL.getURI(); provider.setTarget(new LocatableOutputSupplier<OutputStream>() { @Override public OutputStream getOutput() throws IOException { return null; } @Override public URI getLocation() { return url; } }); // WFS version ISelection versionSel = selectVersion.getSelection(); if (!versionSel.isEmpty() && versionSel instanceof IStructuredSelection) { Object sel = ((IStructuredSelection) versionSel).getFirstElement(); if (sel instanceof WFSVersion) { provider.setWFSVersion((WFSVersion) sel); } } return true; } return false; } }