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ControlRootEClassControl2SWTRenderer$4
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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: * Alexandra Buzila - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.view.internal.editor.controls;
15:
16: import java.net.URL;
17:
18: import javax.inject.Inject;
19:
20: import org.eclipse.core.databinding.Binding;
21: import org.eclipse.core.databinding.UpdateValueStrategy;
22: import org.eclipse.core.databinding.observable.value.IObservableValue;
23: import org.eclipse.emf.common.notify.AdapterFactory;
24: import org.eclipse.emf.common.notify.Notification;
25: import org.eclipse.emf.ecore.EObject;
26: import org.eclipse.emf.ecp.edit.spi.util.ECPModelElementChangeListener;
27: import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
28: import org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTControlSWTRenderer;
29: import org.eclipse.emf.ecp.view.spi.model.VControl;
30: import org.eclipse.emf.ecp.view.template.model.VTViewTemplateProvider;
31: import org.eclipse.emf.edit.provider.AdapterFactoryItemDelegator;
32: import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
33: import org.eclipse.emf.edit.provider.ReflectiveItemProviderAdapterFactory;
34: import org.eclipse.emfforms.spi.common.report.ReportService;
35: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
36: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedReport;
37: import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding;
38: import org.eclipse.emfforms.spi.core.services.label.EMFFormsLabelProvider;
39: import org.eclipse.jface.databinding.swt.typed.WidgetProperties;
40: import org.eclipse.jface.layout.GridDataFactory;
41: import org.eclipse.jface.layout.GridLayoutFactory;
42: import org.eclipse.swt.SWT;
43: import org.eclipse.swt.widgets.Composite;
44: import org.eclipse.swt.widgets.Control;
45: import org.eclipse.swt.widgets.Display;
46: import org.eclipse.swt.widgets.Label;
47:
48: /**
49: * @author Alexandra Buzila
50: *
51: */
52: public class ControlRootEClassControl2SWTRenderer extends SimpleControlSWTControlSWTRenderer {
53:
54: /**
55: * Default constructor.
56: *
57: * @param vElement the view model element to be rendered
58: * @param viewContext the view context
59: * @param reportService The {@link ReportService}
60: * @param emfFormsDatabinding The {@link EMFFormsDatabinding}
61: * @param emfFormsLabelProvider The {@link EMFFormsLabelProvider}
62: * @param vtViewTemplateProvider The {@link VTViewTemplateProvider}
63: */
64: @Inject
65: public ControlRootEClassControl2SWTRenderer(VControl vElement, ViewModelContext viewContext,
66: ReportService reportService, EMFFormsDatabinding emfFormsDatabinding,
67: EMFFormsLabelProvider emfFormsLabelProvider, VTViewTemplateProvider vtViewTemplateProvider) {
68: super(vElement, viewContext, reportService, emfFormsDatabinding, emfFormsLabelProvider, vtViewTemplateProvider);
69: }
70:
71: private Composite labelComposite;
72: private Label label;
73: private ComposedAdapterFactory composedAdapterFactory;
74: private AdapterFactoryItemDelegator adapterFactoryItemDelegator;
75: private Label imageLabel;
76: private ECPModelElementChangeListener modelElementChangeListener;
77:
78: /**
79: * {@inheritDoc}
80: *
81: * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTControlSWTRenderer#createBindings(org.eclipse.swt.widgets.Control,
82: * org.eclipse.emf.ecore.EStructuralFeature.Setting)
83: */
84: @Override
85: protected Binding[] createBindings(Control control) throws DatabindingFailedException {
86:
87: final Binding[] bindings = new Binding[3];
88: final IObservableValue value = WidgetProperties.text().observe(label);
89:
90: bindings[0] = getDataBindingContext().bindValue(value, getModelValue(),
91: withPreSetValidation(new UpdateValueStrategy() {
92:
93: @Override
94: public Object convert(Object value) {
95: try {
96: return getModelValue().getValue();
97: } catch (final DatabindingFailedException ex) {
98: getReportService().report(new DatabindingFailedReport(ex));
99: return null;
100: }
101: }
102: }), new UpdateValueStrategy() {
103: @Override
104: public Object convert(Object value) {
105: updateChangeListener((EObject) value);
106: return getText(value);
107: }
108: });
109: final IObservableValue tooltipValue = WidgetProperties.tooltipText().observe(label);
110: bindings[1] = getDataBindingContext().bindValue(tooltipValue, getModelValue(),
111: withPreSetValidation(new UpdateValueStrategy() {
112:
113: @Override
114: public Object convert(Object value) {
115: try {
116: return getModelValue().getValue();
117: } catch (final DatabindingFailedException ex) {
118: getReportService().report(new DatabindingFailedReport(ex));
119: return null;
120: }
121: }
122: }), new UpdateValueStrategy() {
123: @Override
124: public Object convert(Object value) {
125: return getText(value);
126: }
127: });
128:
129: final IObservableValue imageValue = WidgetProperties.image().observe(imageLabel);
130: bindings[2] = getDataBindingContext().bindValue(imageValue, getModelValue(),
131: withPreSetValidation(new UpdateValueStrategy() {
132:
133: @Override
134: public Object convert(Object value) {
135: try {
136: return getModelValue().getValue();
137: } catch (final DatabindingFailedException ex) {
138: getReportService().report(new DatabindingFailedReport(ex));
139: return null;
140: }
141: }
142: }), new UpdateValueStrategy() {
143: @Override
144: public Object convert(Object value) {
145: return getImage(value);
146: }
147: });
148:
149: return bindings;
150: }
151:
152: private Object getImage(Object value) {
153: return Activator.getImage((URL) adapterFactoryItemDelegator.getImage(value));
154: }
155:
156: private Object getText(Object value) {
157: final String textName = adapterFactoryItemDelegator.getText(value);
158: return textName == null ? "" : textName; //$NON-NLS-1$
159: }
160:
161: private void updateChangeListener(final EObject value) {
162: if (modelElementChangeListener != null) {
163: if (modelElementChangeListener.getTarget().equals(value)) {
164: return;
165: }
166: modelElementChangeListener.remove();
167: modelElementChangeListener = null;
168: }
169:
170: modelElementChangeListener = new ECPModelElementChangeListener(value) {
171:
172: @Override
173: public void onChange(Notification notification) {
174: Display.getDefault().syncExec(new Runnable() {
175:
176: @Override
177: public void run() {
178: getDataBindingContext().updateTargets();
179: labelComposite.layout();
180:
181: }
182:
183: });
184:
185: }
186: };
187:
188: }
189:
190: /**
191: * {@inheritDoc}
192: *
193: * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTControlSWTRenderer#createSWTControl(org.eclipse.swt.widgets.Composite)
194: */
195: @Override
196: protected Control createSWTControl(Composite parent2) {
197: final Composite composite2 = new Composite(parent2, SWT.NONE);
198: composite2.setBackground(parent2.getBackground());
199: GridLayoutFactory.fillDefaults().numColumns(1).spacing(0, 0).equalWidth(false).applyTo(composite2);
200:
201: labelComposite = new Composite(composite2, SWT.NONE);
202: GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.BEGINNING).applyTo(labelComposite);
203: GridLayoutFactory.fillDefaults().numColumns(2).equalWidth(false).applyTo(labelComposite);
204: labelComposite.setBackground(composite2.getBackground());
205:
206: // create labels
207: imageLabel = new Label(labelComposite, SWT.NONE);
208: imageLabel.setBackground(labelComposite.getBackground());
209: label = new Label(labelComposite, SWT.NONE);
210: label.setBackground(labelComposite.getBackground());
211: GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.BEGINNING).applyTo(label);
212: GridDataFactory.fillDefaults().grab(false, false).align(SWT.FILL, SWT.BEGINNING).hint(20, 20)
213: .applyTo(imageLabel);
214:
215: composedAdapterFactory = new ComposedAdapterFactory(new AdapterFactory[] {
216: new ReflectiveItemProviderAdapterFactory(),
217: new ComposedAdapterFactory(ComposedAdapterFactory.Descriptor.Registry.INSTANCE) });
218: adapterFactoryItemDelegator = new AdapterFactoryItemDelegator(composedAdapterFactory);
219:
220: return composite2;
221: }
222:
223: /**
224: * {@inheritDoc}
225: *
226: * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTRenderer#getUnsetText()
227: */
228: @Override
229: protected String getUnsetText() {
230: return "Not set"; //$NON-NLS-1$
231: }
232:
233: @Override
234: public void dispose() {
235: composedAdapterFactory.dispose();
236: if (modelElementChangeListener != null) {
237: modelElementChangeListener.remove();
238: }
239: label.dispose();
240: super.dispose();
241: }
242:
243: }
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