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Package: MultiReferenceCellEditor$1
MultiReferenceCellEditor$1
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2018 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.internal.table.swt.cell;
15:
16: import org.eclipse.core.databinding.DataBindingContext;
17: import org.eclipse.core.databinding.UpdateValueStrategy;
18: import org.eclipse.core.databinding.observable.value.IObservableValue;
19: import org.eclipse.core.databinding.property.INativePropertyListener;
20: import org.eclipse.core.databinding.property.ISimplePropertyListener;
21: import org.eclipse.core.databinding.property.value.IValueProperty;
22: import org.eclipse.core.databinding.property.value.SimpleValueProperty;
23: import org.eclipse.emf.common.notify.AdapterFactory;
24: import org.eclipse.emf.ecore.EObject;
25: import org.eclipse.emf.ecore.EReference;
26: import org.eclipse.emf.ecore.EStructuralFeature;
27: import org.eclipse.emf.ecp.edit.spi.swt.table.ECPCellEditor;
28: import org.eclipse.emf.ecp.edit.spi.swt.table.ECPViewerAwareCellEditor;
29: import org.eclipse.emf.ecp.view.model.common.edit.provider.CustomReflectiveItemProviderAdapterFactory;
30: import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
31: import org.eclipse.emf.ecp.view.spi.model.ModelChangeListener;
32: import org.eclipse.emf.ecp.view.spi.model.ModelChangeNotification;
33: import org.eclipse.emf.edit.provider.AdapterFactoryItemDelegator;
34: import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
35: import org.eclipse.jface.viewers.AbstractTableViewer;
36: import org.eclipse.jface.viewers.CellEditor;
37: import org.eclipse.swt.graphics.Image;
38: import org.eclipse.swt.widgets.Composite;
39: import org.eclipse.swt.widgets.Control;
40:
41: /**
42: * A cell editor, which displays the multi references feature as a readonly text.
43: *
44: * @since 1.18
45: *
46: */
47: public class MultiReferenceCellEditor extends CellEditor implements ECPCellEditor, ECPViewerAwareCellEditor {
48:
49: private ComposedAdapterFactory caf;
50: private AdapterFactoryItemDelegator adapterFactoryItemDelegator;
51: private Composite parent;
52: private AbstractTableViewer tableViewer;
53: private EReference tableRefrence;
54: private ModelChangeListener modelChangeListener;
55: private ViewModelContext viewModelContext;
56:
57: /**
58: * Default constructor.
59: *
60: * @param parent the parent
61: */
62: public MultiReferenceCellEditor(Composite parent) {
63: super(parent);
64: this.parent = parent;
65: }
66:
67: /**
68: * Constructor allowing to specify a SWT style.
69: *
70: * @param parent the parent
71: * @param style the SWT style
72: */
73: public MultiReferenceCellEditor(Composite parent, int style) {
74: super(parent, style);
75: }
76:
77: @Override
78: public IValueProperty getValueProperty() {
79: return new SimpleValueProperty() {
80:
81: @Override
82: public Object getValueType() {
83: return String.class;
84: }
85:
86: @Override
87: protected Object doGetValue(Object source) {
88: return getFormatedString(source);
89: }
90:
91: @Override
92: protected void doSetValue(Object source, Object value) {
93: }
94:
95: @Override
96: public IObservableValue observe(Object source) {
97: return super.observe(parent);
98: }
99:
100: @Override
101: public INativePropertyListener adaptListener(ISimplePropertyListener listener) {
102: return null;
103: }
104: };
105: }
106:
107: @Override
108: public void instantiate(EStructuralFeature feature, ViewModelContext viewModelContext) {
109: caf = new ComposedAdapterFactory(new AdapterFactory[] {
110: new CustomReflectiveItemProviderAdapterFactory(),
111: new ComposedAdapterFactory(ComposedAdapterFactory.Descriptor.Registry.INSTANCE) });
112: adapterFactoryItemDelegator = new AdapterFactoryItemDelegator(caf);
113: this.viewModelContext = viewModelContext;
114: modelChangeListener = new ModelChangeListener() {
115:
116: @Override
117: public void notifyChange(ModelChangeNotification notification) {
118: if (tableViewer == null || tableRefrence == null) {
119: return;
120: }
121: if (notification.getNotifier().eContainingFeature() == feature) {
122: EObject tableRow = notification.getNotifier();
123: while (tableRow != null && tableRow.eContainingFeature() != tableRefrence) {
124: tableRow = tableRow.eContainer();
125: }
126: if (tableRow != null) {
127: tableViewer.update(tableRow, null);
128: }
129: }
130: }
131: };
132: viewModelContext.registerDomainChangeListener(modelChangeListener);
133: }
134:
135: @Override
136: public String getFormatedString(Object value) {
137: // no need to handle null and not lists as this editor is only used for multi references
138: return adapterFactoryItemDelegator.getText(value);
139: }
140:
141: @Override
142: public Image getImage(Object value) {
143: return null;
144: }
145:
146: @Override
147: public int getColumnWidthWeight() {
148: return 100;
149: }
150:
151: @Override
152: public UpdateValueStrategy getTargetToModelStrategy(DataBindingContext databindingContext) {
153: return null;
154: }
155:
156: @Override
157: public UpdateValueStrategy getModelToTargetStrategy(DataBindingContext databindingContext) {
158: return null;
159: }
160:
161: @Override
162: public void setEditable(boolean editable) {
163: // intentionally left empty
164: }
165:
166: @Override
167: public int getMinWidth() {
168: return 50;
169: }
170:
171: @Override
172: protected Control createControl(Composite parent) {
173: return null;
174: }
175:
176: @Override
177: protected Object doGetValue() {
178: return null;
179: }
180:
181: @Override
182: protected void doSetFocus() {
183: // intentionally left empty
184: }
185:
186: @Override
187: protected void doSetValue(Object value) {
188: // intentionally left empty
189: }
190:
191: @Override
192: public void dispose() {
193: if (caf != null) {
194: caf.dispose();
195: }
196: if (viewModelContext != null) {
197: viewModelContext.unregisterDomainChangeListener(modelChangeListener);
198: }
199: super.dispose();
200: }
201:
202: @Override
203: public void setTableViewer(AbstractTableViewer tableViewer) {
204: this.tableViewer = tableViewer;
205: }
206:
207: @Override
208: public void setTableFeature(EReference tableRefrence) {
209: this.tableRefrence = tableRefrence;
210: }
211:
212: }