| /******************************************************************************* |
| * Copyright (c) 2011-2013 EclipseSource Muenchen GmbH and others. |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Clemens Elflein - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.emfforms.internal.editor.ecore.controls; |
| |
| import java.util.List; |
| |
| import javax.inject.Inject; |
| |
| import org.eclipse.core.databinding.Binding; |
| import org.eclipse.core.databinding.conversion.Converter; |
| import org.eclipse.emf.databinding.EMFUpdateValueStrategy; |
| import org.eclipse.emf.ecore.EAttribute; |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.emf.ecore.EClassifier; |
| import org.eclipse.emf.ecore.EDataType; |
| import org.eclipse.emf.ecore.EOperation; |
| import org.eclipse.emf.ecore.EParameter; |
| import org.eclipse.emf.ecore.EReference; |
| import org.eclipse.emf.ecp.view.spi.context.ViewModelContext; |
| import org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlJFaceViewerSWTRenderer; |
| import org.eclipse.emf.ecp.view.spi.model.VControl; |
| import org.eclipse.emf.ecp.view.template.model.VTViewTemplateProvider; |
| import org.eclipse.emfforms.spi.common.report.ReportService; |
| import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException; |
| import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding; |
| import org.eclipse.emfforms.spi.core.services.label.EMFFormsLabelProvider; |
| import org.eclipse.emfforms.spi.editor.helpers.ResourceSetHelpers; |
| import org.eclipse.jface.databinding.swt.typed.WidgetProperties; |
| import org.eclipse.jface.fieldassist.AutoCompleteField; |
| import org.eclipse.jface.fieldassist.ComboContentAdapter; |
| import org.eclipse.jface.viewers.ArrayContentProvider; |
| import org.eclipse.jface.viewers.ComboViewer; |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Composite; |
| |
| /** |
| * A control to select the DataType for ETypedElements. |
| * |
| * This control assists the user while selecting EDataTypes. |
| * For example you can type "String" in order to select "EString" |
| * |
| */ |
| public class DataTypeControl extends SimpleControlJFaceViewerSWTRenderer { |
| /** |
| * Default constructor. |
| * |
| * @param vElement the view model element to be rendered |
| * @param viewContext the view context |
| * @param reportService The {@link ReportService} |
| * @param emfFormsDatabinding The {@link EMFFormsDatabinding} |
| * @param emfFormsLabelProvider The {@link EMFFormsLabelProvider} |
| * @param vtViewTemplateProvider The {@link VTViewTemplateProvider} |
| */ |
| @Inject |
| public DataTypeControl(VControl vElement, ViewModelContext viewContext, ReportService reportService, |
| EMFFormsDatabinding emfFormsDatabinding, EMFFormsLabelProvider emfFormsLabelProvider, |
| VTViewTemplateProvider vtViewTemplateProvider) { |
| super(vElement, viewContext, reportService, emfFormsDatabinding, emfFormsLabelProvider, vtViewTemplateProvider); |
| } |
| |
| @Override |
| protected String getUnsetText() { |
| return "No EDataType set!"; |
| } |
| |
| @Override |
| protected Viewer createJFaceViewer(Composite parent) { |
| final ComboViewer combo = new ComboViewer(parent, SWT.DROP_DOWN); |
| |
| Class<?> type = EClassifier.class; |
| boolean includeEcorePackage = false; |
| |
| if (getViewModelContext().getDomainModel() instanceof EAttribute) { |
| type = EDataType.class; |
| includeEcorePackage = true; |
| } else if (getViewModelContext().getDomainModel() instanceof EReference) { |
| type = EClass.class; |
| includeEcorePackage = false; |
| } else if (getViewModelContext().getDomainModel() instanceof EOperation) { |
| includeEcorePackage = true; |
| } else if (getViewModelContext().getDomainModel() instanceof EParameter) { |
| includeEcorePackage = true; |
| } |
| |
| final List<?> classifiers = ResourceSetHelpers.findAllOfTypeInResourceSet( |
| getViewModelContext().getDomainModel(), type, |
| includeEcorePackage); |
| |
| combo.setLabelProvider(new LabelProvider() { |
| @Override |
| public String getText(Object element) { |
| if (element instanceof EClassifier) { |
| return ((EClassifier) element).getName(); |
| } |
| return super.getText(element); |
| } |
| }); |
| combo.setContentProvider(new ArrayContentProvider()); |
| combo.setInput(classifiers.toArray()); |
| |
| new AutoCompleteField(combo.getCombo(), new ComboContentAdapter(), |
| combo.getCombo().getItems()); |
| |
| return combo; |
| } |
| |
| @Override |
| protected Binding[] createBindings(final Viewer viewer) throws DatabindingFailedException { |
| final Binding binding = getDataBindingContext().bindValue( |
| WidgetProperties.text().observe( |
| ((ComboViewer) viewer).getCombo()), |
| getModelValue(), |
| new EMFUpdateValueStrategy().setConverter(new Converter( |
| String.class, EClassifier.class) { |
| @Override |
| public Object convert(Object fromObject) { |
| // We want the result for such a request to be null, not a DataType with null name (can occur) |
| if (fromObject == null) { |
| return null; |
| } |
| |
| final Object[] classifiers = (Object[]) ((ComboViewer) viewer).getInput(); |
| for (int i = 0; i < classifiers.length; i++) { |
| if (fromObject |
| .equals(((EClassifier) classifiers[i]) |
| .getName())) { |
| return classifiers[i]; |
| } |
| } |
| |
| // If we haven't found the DataType yet, Try adding an E to the Input and search again. |
| // So we find EString even if String was searched. |
| final String fromStringWithE = "E" + fromObject.toString(); |
| for (int i = 0; i < classifiers.length; i++) { |
| if (fromStringWithE.equals(((EClassifier) classifiers[i]).getName())) { |
| return classifiers[i]; |
| } |
| } |
| |
| return null; |
| } |
| }), new EMFUpdateValueStrategy().setConverter(new Converter(EClassifier.class, String.class) { |
| @Override |
| public Object convert(Object fromObject) { |
| if (fromObject == null) { |
| return ""; |
| } |
| return ((EClassifier) fromObject).getName(); |
| } |
| })); |
| // TODO: this update creates a nasty usability bug! |
| /* |
| * ((ComboViewer)viewer).getCombo().addFocusListener(new FocusListener() { |
| * @Override |
| * public void focusLost(FocusEvent e) { |
| * binding.updateModelToTarget(); |
| * } |
| * @Override |
| * public void focusGained(FocusEvent e) { |
| * } |
| * }); |
| */ |
| return new Binding[] { binding }; |
| } |
| |
| @Override |
| protected boolean isUnsettable() { |
| // We unset the property via databinding as soon as the input is invalid |
| return false; |
| } |
| } |