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Package: MappedEClassControlSWTRenderer$EClassTreeContentProvider
MappedEClassControlSWTRenderer$EClassTreeContentProvider
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Coverage
1: /**
2: * Copyright (c) 2011-2014 EclipseSource Muenchen GmbH and others.
3: *
4: * All rights reserved. This program and the accompanying materials
5: * are made available under the terms of the Eclipse Public License 2.0
6: * which accompanies this distribution, and is available at
7: * https://www.eclipse.org/legal/epl-2.0/
8: *
9: * SPDX-License-Identifier: EPL-2.0
10: *
11: * Contributors:
12: * Eugen Neufeld - initial API and implementation
13: */
14: package org.eclipse.emf.ecp.view.mappingdmr.tooling;
15:
16: import java.util.Collection;
17: import java.util.LinkedHashSet;
18: import java.util.Set;
19:
20: import org.eclipse.core.databinding.observable.IObserving;
21: import org.eclipse.core.databinding.observable.value.IObservableValue;
22: import org.eclipse.core.runtime.IStatus;
23: import org.eclipse.core.runtime.Status;
24: import org.eclipse.emf.common.notify.AdapterFactory;
25: import org.eclipse.emf.ecore.EClass;
26: import org.eclipse.emf.ecore.EClassifier;
27: import org.eclipse.emf.ecore.EPackage;
28: import org.eclipse.emf.ecore.EPackage.Descriptor;
29: import org.eclipse.emf.ecore.EPackage.Registry;
30: import org.eclipse.emf.ecore.EReference;
31: import org.eclipse.emf.ecp.common.spi.EMFUtils;
32: import org.eclipse.emf.ecp.view.internal.editor.controls.EditableEReferenceLabelControlSWTRenderer;
33: import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
34: import org.eclipse.emf.ecp.view.spi.mappingdmr.model.VMappingDomainModelReference;
35: import org.eclipse.emf.ecp.view.spi.model.VControl;
36: import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
37: import org.eclipse.emf.edit.provider.ReflectiveItemProviderAdapterFactory;
38: import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;
39: import org.eclipse.emfforms.spi.common.report.ReportService;
40: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
41: import org.eclipse.jface.viewers.ITreeContentProvider;
42: import org.eclipse.jface.viewers.Viewer;
43: import org.eclipse.jface.viewers.ViewerComparator;
44: import org.eclipse.jface.window.Window;
45: import org.eclipse.swt.widgets.Shell;
46: import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
47: import org.eclipse.ui.dialogs.ISelectionStatusValidator;
48:
49: /**
50: * Control for a {@link VMappingDomainModelReference}.
51: *
52: * @author Eugen Neufeld
53: *
54: */
55: @SuppressWarnings("restriction")
56: public class MappedEClassControlSWTRenderer extends
57: EditableEReferenceLabelControlSWTRenderer {
58:
59: /**
60: * @param vElement the view model element to be rendered
61: * @param viewContext the view context
62: * @param reportService the {@link ReportService}
63: */
64: public MappedEClassControlSWTRenderer(VControl vElement, ViewModelContext viewContext,
65: ReportService reportService) {
66: super(vElement, viewContext, reportService);
67: }
68:
69: /**
70: * @author Eugen
71: *
72: */
73: private static final class EClassTreeContentProvider implements ITreeContentProvider {
74: @Override
75: public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
76: // TODO Auto-generated method stub
77:
78: }
79:
80: @Override
81: public void dispose() {
82: // TODO Auto-generated method stub
83:
84: }
85:
86: @Override
87: public boolean hasChildren(Object element) {
88:• if (EPackage.class.isInstance(element)) {
89: return true;
90: }
91:• if (Descriptor.class.isInstance(element)) {
92: final Descriptor descriptor = (Descriptor) element;
93: descriptor.getEPackage();
94: return true;
95: }
96: return false;
97: }
98:
99: @Override
100: public Object getParent(Object element) {
101:• if (EClass.class.isInstance(element)) {
102: return ((EClass) element).eContainer();
103: }
104: return null;
105: }
106:
107: @Override
108: public Object[] getElements(Object inputElement) {
109: return getChildren(inputElement);
110: }
111:
112: @Override
113: public Object[] getChildren(Object parentElement) {
114:• if (EPackage.class.isInstance(parentElement)) {
115: final EPackage ePackage = (EPackage) parentElement;
116: final Set<EClass> result = new LinkedHashSet<EClass>();
117:• for (final EClassifier classifier : ePackage.getEClassifiers()) {
118:• if (EClass.class.isInstance(classifier)) {
119: result.add((EClass) classifier);
120: }
121: }
122: return result.toArray();
123: }
124:• if (Descriptor.class.isInstance(parentElement)) {
125: return getChildren(((Descriptor) parentElement).getEPackage());
126: }
127:• if (Registry.class.isInstance(parentElement)) {
128: return ((Registry) parentElement).values().toArray();
129: }
130:• if (Collection.class.isInstance(parentElement)) {
131: return Collection.class.cast(parentElement).toArray();
132: }
133: return null;
134: }
135: }
136:
137: @Override
138: protected void linkValue(Shell shell) {
139: IObservableValue observableValue;
140: try {
141: observableValue = getEMFFormsDatabinding()
142: .getObservableValue(getVElement().getDomainModelReference(), getViewModelContext().getDomainModel());
143: } catch (final DatabindingFailedException ex) {
144: showLinkValueFailedMessageDialog(shell, ex);
145: return;
146: }
147: final VMappingDomainModelReference dmr = (VMappingDomainModelReference) ((IObserving) observableValue)
148: .getObserved();
149: observableValue.dispose();
150: final ComposedAdapterFactory adapterFactory = new ComposedAdapterFactory(new AdapterFactory[] {
151: new ReflectiveItemProviderAdapterFactory(),
152: new ComposedAdapterFactory(ComposedAdapterFactory.Descriptor.Registry.INSTANCE) });
153: final AdapterFactoryLabelProvider labelProvider = new AdapterFactoryLabelProvider(
154: adapterFactory);
155: final ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(shell, labelProvider,
156: getContentProvider());
157: dialog.setAllowMultiple(false);
158: dialog.setValidator(new ISelectionStatusValidator() {
159:
160: @Override
161: public IStatus validate(Object[] selection) {
162: if (selection.length != 0 && EClass.class.isInstance(selection[0])) {
163:
164: return Status.OK_STATUS;
165: }
166: return new Status(IStatus.ERROR, org.eclipse.emf.ecp.view.internal.editor.controls.Activator.PLUGIN_ID,
167: "This is not an EClass."); //$NON-NLS-1$
168: }
169: });
170: dialog.setInput(getInput(dmr));
171: dialog.setMessage("Select an EClass."); //$NON-NLS-1$
172: dialog.setTitle("Select an EClass."); //$NON-NLS-1$
173: dialog.setComparator(new ViewerComparator());
174: final int result = dialog.open();
175: if (Window.OK == result) {
176: final Object selection = dialog.getFirstResult();
177: if (EClass.class.isInstance(selection)) {
178: final EClass selectedFeature = (EClass) selection;
179:
180: dmr.setMappedClass(selectedFeature);
181:
182: }
183: }
184: labelProvider.dispose();
185: }
186:
187: private ITreeContentProvider getContentProvider() {
188: return new EClassTreeContentProvider();
189: }
190:
191: /**
192: * @return an instance of the {@link org.eclipse.emf.ecore.EPackage.Registry}
193: */
194: private Object getInput(VMappingDomainModelReference dmr) {
195: final EClass referenceMap = EReference.class.cast(dmr.getDomainModelEFeature()).getEReferenceType();
196:
197: final EReference valueReference = EReference.class.cast(referenceMap.getEStructuralFeature("value")); //$NON-NLS-1$
198: if (valueReference == null) {
199: return null;
200: }
201: return EMFUtils.getSubClasses(valueReference.getEReferenceType());
202: // return Registry.INSTANCE;
203: }
204:
205: }