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Package: EMFKeyAttributeValueProperty
EMFKeyAttributeValueProperty
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| EMFKeyAttributeValueProperty(EditingDomain, EMFFormsDatabindingEMF, VDomainModelReference, Object, EStructuralFeature) |
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| doGetValue(Object) |
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| doSetValue(Object, Object) |
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| toString() |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2016 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.emfforms.internal.core.services.databinding.keyattribute;
15:
16: import org.eclipse.emf.common.command.Command;
17: import org.eclipse.emf.common.util.EList;
18: import org.eclipse.emf.databinding.internal.EMFValueProperty;
19: import org.eclipse.emf.ecore.EObject;
20: import org.eclipse.emf.ecore.EStructuralFeature;
21: import org.eclipse.emf.ecore.EStructuralFeature.Setting;
22: import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
23: import org.eclipse.emf.edit.command.AddCommand;
24: import org.eclipse.emf.edit.command.SetCommand;
25: import org.eclipse.emf.edit.domain.EditingDomain;
26: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
27: import org.eclipse.emfforms.spi.core.services.databinding.emf.EMFFormsDatabindingEMF;
28:
29: /**
30: * @author Lucas Koehler
31: *
32: */
33: @SuppressWarnings("restriction")
34: public class EMFKeyAttributeValueProperty extends EMFValueProperty {
35:
36: private final EditingDomain editingDomain;
37: private final EMFFormsDatabindingEMF databinding;
38: private final VDomainModelReference keyDMR;
39: private final Object key;
40:
41: /**
42: * @param editingDomain The {@link EditingDomain}
43: * @param databinding The {@link EMFFormsDatabindingEMF emf databinding service}
44: * @param keyDMR The reference to the key field
45: * @param key The key
46: * @param eStructuralFeature The {@link EStructuralFeature} of the key attribute feature
47: */
48: public EMFKeyAttributeValueProperty(EditingDomain editingDomain, EMFFormsDatabindingEMF databinding,
49: VDomainModelReference keyDMR, Object key, EStructuralFeature eStructuralFeature) {
50: super(eStructuralFeature);
51: this.editingDomain = editingDomain;
52: this.databinding = databinding;
53: this.keyDMR = keyDMR;
54: this.key = key;
55: }
56:
57: /**
58: * {@inheritDoc}
59: *
60: * @see org.eclipse.emf.databinding.internal.EMFValueProperty#doGetValue(java.lang.Object)
61: */
62: @SuppressWarnings("unchecked")
63: @Override
64: protected Object doGetValue(Object source) {
65: final Object object = super.doGetValue(source);
66: final EList<Object> list = (EList<Object>) object;
67:• if (list == null) {
68: return null;
69: }
70:
71: // If it exists, find the EObject that contains the key.
72:• for (int i = 0; i < list.size(); i++) {
73: final EObject eObject = (EObject) list.get(i);
74: Setting setting;
75: try {
76: setting = databinding.getSetting(keyDMR, eObject);
77: } catch (final DatabindingFailedException ex) {
78: // TODO report needed?
79: continue;
80: }
81:• if (key.equals(setting.get(true))) {
82: // key was present in the current EObject
83: return eObject;
84: }
85: }
86:
87: // return null if the key was not present in any EObject
88: return null;
89: }
90:
91: /**
92: * {@inheritDoc}
93: *
94: * @see org.eclipse.emf.databinding.internal.EMFValueProperty#doSetValue(java.lang.Object, java.lang.Object)
95: */
96: @SuppressWarnings("unchecked")
97: @Override
98: protected void doSetValue(Object source, Object value) {
99: final EObject newValue = (EObject) value;
100: Setting setting;
101: try {
102: setting = databinding.getSetting(keyDMR, newValue);
103: } catch (final DatabindingFailedException ex) {
104: throw new IllegalArgumentException("The new value's key could not be resolved.", ex); //$NON-NLS-1$
105: }
106:• if (setting == null || !key.equals(setting.get(true))) {
107: throw new IllegalArgumentException("The new value must contain the key '" + key + "'."); //$NON-NLS-1$//$NON-NLS-2$
108: }
109:
110: final Object oldValue = doGetValue(source);
111: Command command = null;
112:• if (oldValue == null) {
113: // no EObject in the list contains the key => add new EObject
114: command = AddCommand.create(editingDomain, source, getFeature(), newValue);
115: } else {
116: // An EObject in the list contains the key => Replace old EObject
117: final Object object = super.doGetValue(source);
118: final EList<Object> list = (EList<Object>) object;
119:• for (int i = 0; i < list.size(); i++) {
120:• if (list.get(i).equals(oldValue)) {
121: command = SetCommand.create(editingDomain, source, getFeature(), newValue, i);
122: break;
123: }
124: }
125: }
126:
127:• if (command != null) {
128: editingDomain.getCommandStack().execute(command);
129: }
130: }
131:
132: /**
133: * {@inheritDoc}
134: *
135: * @see org.eclipse.emf.databinding.internal.EMFValueProperty#toString()
136: */
137: @Override
138: public String toString() {
139: final String s = super.toString();
140: return s + " key '" + key + "'"; //$NON-NLS-1$ //$NON-NLS-2$
141: }
142:
143: }