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Package: LocalizedEnumeratorComparator
LocalizedEnumeratorComparator
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| LocalizedEnumeratorComparator(EMFFormsLocalizationService, BundleResolver, ReportService) |
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| compare(EStructuralFeature, Enumerator, Enumerator) |
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| lambda$0(EStructuralFeature, String, EClassifier) |
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| lambda$1(String, Enumerator, Bundle) |
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| lambda$2(String, Enumerator, Bundle) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2019 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: * Lucas Koehler - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.view.spi.table.swt;
15:
16: import java.text.MessageFormat;
17: import java.util.HashMap;
18: import java.util.Map;
19: import java.util.Optional;
20:
21: import org.eclipse.core.runtime.IStatus;
22: import org.eclipse.emf.common.util.Enumerator;
23: import org.eclipse.emf.ecore.EClassifier;
24: import org.eclipse.emf.ecore.EStructuralFeature;
25: import org.eclipse.emfforms.spi.common.BundleResolver;
26: import org.eclipse.emfforms.spi.common.BundleResolver.NoBundleFoundException;
27: import org.eclipse.emfforms.spi.common.report.AbstractReport;
28: import org.eclipse.emfforms.spi.common.report.ReportService;
29: import org.eclipse.emfforms.spi.common.sort.NumberAwareStringComparator;
30: import org.eclipse.emfforms.spi.localization.EMFFormsLocalizationService;
31: import org.osgi.framework.Bundle;
32:
33: /**
34: * Retrieves the localized labels for two {@link Enumerator} values and compares them to each other.
35: * Enumerators are localized by retrieving their literals' labels from the corresponding edit bundle by using the
36: * {@link EMFFormsLocalizationService}. Retrieved edit bundles are cached to avoid re-resolving them for every
37: * comparison.
38: *
39: * @author Lucas Koehler
40: * @since 1.22
41: *
42: */
43: public class LocalizedEnumeratorComparator implements FeatureAwareComparator<Enumerator> {
44:
45: /**
46: * Template to generate the localization key for an enum value. First parameter is the EEnum's type name, second
47: * parameter is the value's name.
48: */
49: private static final String ENUM_KEY_TEMPLATE = "_UI_%s_%s_literal"; //$NON-NLS-1$
50:
51: // use Optional to avoid trying to resolve absent edit bundles over and over again
52: private final Map<EClassifier, Optional<Bundle>> editBundles = new HashMap<>();
53: private final EMFFormsLocalizationService localizationService;
54: private final BundleResolver bundleResolver;
55: private final ReportService reportService;
56:
57: /**
58: * Default constructor.
59: *
60: * @param localizationService The {@link EMFFormsLocalizationService} to get the localized literal labels
61: * @param bundleResolver The {@link BundleResolver} to resolve the edit bundles
62: * @param reportService The {@link ReportService} to report missing edit bundles
63: */
64: public LocalizedEnumeratorComparator(EMFFormsLocalizationService localizationService, BundleResolver bundleResolver,
65: ReportService reportService) {
66: this.localizationService = localizationService;
67: this.bundleResolver = bundleResolver;
68: this.reportService = reportService;
69: }
70:
71: @Override
72: public int compare(EStructuralFeature feature, Enumerator leftValue, Enumerator rightValue) {
73:• if (leftValue == null) {
74:• if (rightValue == null) {
75: return 0;
76: }
77: return 1;
78:• } else if (rightValue == null) {
79: return -1;
80: }
81:
82: final String typeName = feature.getEType().getName();
83: final Optional<Bundle> editBundle = editBundles.computeIfAbsent(feature.getEType(), key -> {
84: try {
85: return Optional.of(bundleResolver.getEditBundle(feature.getEContainingClass()));
86: } catch (final NoBundleFoundException ex) {
87: reportService
88: .report(new AbstractReport(
89: MessageFormat.format(
90: "No edit bundle was found for EEnum ''{0}''. Hence, its literals cannot be internationalized for feature ''{1}''.", //$NON-NLS-1$
91: typeName, feature.getName()),
92: IStatus.WARNING));
93: }
94: return Optional.empty();
95: });
96:
97: final String leftLabel = editBundle
98: .map(eB -> localizationService.getString(eB,
99: String.format(ENUM_KEY_TEMPLATE, typeName, leftValue.getName())))
100: .orElse(leftValue.getLiteral());
101:
102: final String rightLabel = editBundle
103: .map(eB -> localizationService.getString(eB,
104: String.format(ENUM_KEY_TEMPLATE, typeName, rightValue.getName())))
105: .orElse(rightValue.getLiteral());
106:
107: return NumberAwareStringComparator.getInstance().compare(leftLabel, rightLabel);
108: }
109: }