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Package: AbstractReferenceHelper
AbstractReferenceHelper
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| AbstractReferenceHelper() |
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| getEStructuralFeature(VDomainModelReference) |
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| getLabel(VDomainModelReference) |
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| getRootEClass(EObject) |
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| handleDatabindingFailedException(DatabindingFailedException) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2015 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: * Stefan Dirix - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.emf2web.util;
15:
16: import java.io.File;
17: import java.io.FileInputStream;
18: import java.io.FileNotFoundException;
19: import java.io.IOException;
20: import java.util.Properties;
21: import java.util.Set;
22:
23: import org.eclipse.core.databinding.observable.value.IObservableValue;
24: import org.eclipse.core.databinding.property.value.IValueProperty;
25: import org.eclipse.core.resources.IResource;
26: import org.eclipse.core.resources.ResourcesPlugin;
27: import org.eclipse.emf.ecore.EClass;
28: import org.eclipse.emf.ecore.EObject;
29: import org.eclipse.emf.ecore.EStructuralFeature;
30: import org.eclipse.emf.ecp.emf2web.Activator;
31: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
32: import org.eclipse.emf.ecp.view.spi.model.VView;
33: import org.eclipse.emfforms.spi.common.report.AbstractReport;
34: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
35: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedReport;
36: import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding;
37: import org.eclipse.emfforms.spi.core.services.databinding.emf.EMFFormsDatabindingEMF;
38: import org.eclipse.emfforms.spi.core.services.label.EMFFormsLabelProvider;
39: import org.eclipse.emfforms.spi.core.services.label.NoLabelFoundException;
40: import org.osgi.framework.BundleContext;
41: import org.osgi.framework.ServiceReference;
42:
43: /**
44: * An abstract implementation of {@link ReferenceHelper} using {@link EMFFormsDatabinding}.
45: *
46: * @author Stefan Dirix
47: *
48: */
49: public abstract class AbstractReferenceHelper implements ReferenceHelper {
50:
51: private final EMFFormsDatabindingEMF dataBinding;
52:
53: /**
54: * Constructor.
55: */
56: public AbstractReferenceHelper() {
57: dataBinding = Activator.getDefault().getEMFFormsDatabinding();
58: }
59:
60: /**
61: * Returns the {@link EStructuralFeature} for the given {@link VDomainModelReference}.
62: *
63: * @param reference
64: * The {@link VDomainModelReference} for which the {@link EStructuralFeature} is to be determined.
65: * @return
66: * The determined {@link EStructuralFeature}.
67: */
68: protected EStructuralFeature getEStructuralFeature(VDomainModelReference reference) {
69: try {
70: final IValueProperty<?, ?> valueProperty = dataBinding.getValueProperty(reference,
71: getRootEClass(reference));
72:
73:• if (valueProperty != null) {
74: return (EStructuralFeature) valueProperty.getValueType();
75: }
76: } catch (final DatabindingFailedException ex) {
77: handleDatabindingFailedException(ex);
78: }
79: return null;
80: }
81:
82: /**
83: * Get the root {@link EClass} by walking up the containment hierarchy of the given EObject (typically a DMR or
84: * control).
85: *
86: * @param eObject The {@link EObject} whose containment hierarchy is searched for a {@link VView}
87: * @return The root EClass or <code>null</code> if the given EObject is not contained in a {@link VView}
88: */
89: private static EClass getRootEClass(EObject eObject) {
90: EObject parent = eObject.eContainer();
91:• while (parent != null) {
92:• if (parent instanceof VView) {
93: return ((VView) parent).getRootEClass();
94: }
95: parent = parent.eContainer();
96: }
97: return null;
98: }
99:
100: /**
101: * Handle {@link DatabindingFailedException}s by reporting them to the ECP ReportService.
102: *
103: * @param exception
104: * The handled {@link DatabindingFailedException}.
105: */
106: protected void handleDatabindingFailedException(DatabindingFailedException exception) {
107: Activator.getDefault().getReportService().report(new DatabindingFailedReport(exception));
108: }
109:
110: private static final String DISPLAY_NAME = "_UI_%1$s_%2$s_feature"; //$NON-NLS-1$
111:
112: @Override
113: public String getLabel(VDomainModelReference reference) {
114: final Set<String> paths = getEcorePaths();
115:• if (paths == null || paths.isEmpty()) {
116: try {
117: final BundleContext bundleContext = Activator.getDefault().getBundleContext();
118: final ServiceReference<EMFFormsLabelProvider> serviceReference = bundleContext
119: .getServiceReference(EMFFormsLabelProvider.class);
120: final EMFFormsLabelProvider labelProvider = bundleContext.getService(serviceReference);
121: final IObservableValue<?> observableValue = labelProvider.getDisplayName(reference,
122: getRootEClass(reference));
123: final String result = (String) observableValue.getValue();
124: observableValue.dispose();
125: bundleContext.ungetService(serviceReference);
126: return result;
127: } catch (final NoLabelFoundException ex) {
128: Activator.getDefault().getReportService().report(new AbstractReport(ex));
129: return ""; //$NON-NLS-1$
130: }
131: }
132:• for (final String path : paths) {
133: // try to find edit bundle
134: final String firstPath = path.split("/")[1]; //$NON-NLS-1$
135: final String editPath = firstPath + ".edit/plugin.properties"; //$NON-NLS-1$
136: final IResource member = ResourcesPlugin.getWorkspace().getRoot().findMember(editPath);
137:• if (member != null && member.exists()) {
138: final File file = member.getLocation().toFile();
139: final Properties p = new Properties();
140: FileInputStream fis = null;
141: try {
142: fis = new FileInputStream(file);
143: p.load(fis);
144: } catch (final FileNotFoundException ex) {
145: Activator.getDefault().getReportService().report(new AbstractReport(ex));
146: } catch (final IOException ex) {
147: Activator.getDefault().getReportService().report(new AbstractReport(ex));
148: } finally {
149:• if (fis != null) {
150: try {
151: fis.close();
152: } catch (final IOException ex) {
153: Activator.getDefault().getReportService().report(new AbstractReport(ex));
154: }
155: }
156: }
157:
158: final EStructuralFeature feature = getEStructuralFeature(reference);
159:• if (feature == null) {
160: continue;
161: }
162: final EClass eClass = feature.getEContainingClass();
163: final String key = String.format(DISPLAY_NAME, eClass.getName(), feature.getName());
164: final String result = p.getProperty(key);
165:• if (result == null) {
166: return feature.getName();
167: }
168: return result;
169: }
170: }
171: final EStructuralFeature feature = getEStructuralFeature(reference);
172: return feature.getName();
173: }
174:
175: /**
176: * Returns the ecore paths of the current view model.
177: *
178: * @return The paths to the ecores of the current view
179: */
180: protected abstract Set<String> getEcorePaths();
181: }