Skip to contentPackage: EditableEReferenceLabelControlSWTRenderer$1
EditableEReferenceLabelControlSWTRenderer$1
Coverage
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: * Eugen - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.view.internal.editor.controls;
15:
16: import org.eclipse.core.databinding.UpdateValueStrategy;
17: import org.eclipse.core.databinding.observable.IObserving;
18: import org.eclipse.core.databinding.observable.value.IObservableValue;
19: import org.eclipse.emf.databinding.EMFDataBindingContext;
20: import org.eclipse.emf.ecore.EObject;
21: import org.eclipse.emf.ecore.EStructuralFeature;
22: import org.eclipse.emf.ecp.edit.spi.swt.util.ECPDialogExecutor;
23: import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
24: import org.eclipse.emf.ecp.view.spi.model.VControl;
25: import org.eclipse.emf.ecp.view.spi.swt.reporting.RenderingFailedReport;
26: import org.eclipse.emfforms.spi.common.report.ReportService;
27: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
28: import org.eclipse.emfforms.spi.core.services.label.EMFFormsLabelProvider;
29: import org.eclipse.emfforms.spi.core.services.label.NoLabelFoundException;
30: import org.eclipse.jface.databinding.swt.typed.WidgetProperties;
31: import org.eclipse.jface.dialogs.IDialogLabelKeys;
32: import org.eclipse.jface.dialogs.MessageDialog;
33: import org.eclipse.jface.layout.GridLayoutFactory;
34: import org.eclipse.jface.resource.JFaceResources;
35: import org.eclipse.swt.SWT;
36: import org.eclipse.swt.events.SelectionAdapter;
37: import org.eclipse.swt.events.SelectionEvent;
38: import org.eclipse.swt.widgets.Button;
39: import org.eclipse.swt.widgets.Composite;
40: import org.eclipse.swt.widgets.Control;
41: import org.eclipse.swt.widgets.Shell;
42:
43: /**
44: * @author Eugen Neufeld
45: *
46: */
47: public abstract class EditableEReferenceLabelControlSWTRenderer extends EReferenceLabelControlSWTRenderer {
48:
49: private final EMFDataBindingContext viewModelDBC;
50:
51: /**
52: * @param vElement the view model element to be rendered
53: * @param viewContext the view context
54: * @param reportService the {@link ReportService}
55: */
56: public EditableEReferenceLabelControlSWTRenderer(VControl vElement, ViewModelContext viewContext,
57: ReportService reportService) {
58: super(vElement, viewContext, reportService);
59: viewModelDBC = new EMFDataBindingContext();
60: }
61:
62: /**
63: * {@inheritDoc}
64: *
65: * @see org.eclipse.emf.ecp.view.internal.editor.controls.ControlRootEClassControl2SWTRenderer#createSWTControl(org.eclipse.swt.widgets.Composite)
66: */
67: @Override
68: protected Control createSWTControl(final Composite parent2) throws DatabindingFailedException {
69: final Composite composite = (Composite) super.createSWTControl(parent2);
70:
71: GridLayoutFactory.fillDefaults().numColumns(3).spacing(0, 0).equalWidth(false).applyTo(composite);
72:
73: final EMFFormsLabelProvider labelProvider = getEMFFormsLabelProvider();
74: final Button selectClass = new Button(composite, SWT.PUSH);
75: try {
76: final IObservableValue labelText = labelProvider.getDisplayName(getVElement().getDomainModelReference(),
77: getViewModelContext().getDomainModel());
78: final IObservableValue tooltip = labelProvider.getDescription(getVElement().getDomainModelReference(),
79: getViewModelContext().getDomainModel());
80:
81: viewModelDBC.bindValue(WidgetProperties.text().observe(selectClass), labelText, null,
82: new UpdateValueStrategy() {
83:
84: /**
85: * {@inheritDoc}
86: *
87: * @see org.eclipse.core.databinding.UpdateValueStrategy#convert(java.lang.Object)
88: */
89: @Override
90: public Object convert(Object value) {
91: final String result = (String) super.convert(value);
92: return "Link " + result; //$NON-NLS-1$
93: }
94:
95: });
96: viewModelDBC.bindValue(WidgetProperties.tooltipText().observe(selectClass), tooltip, null,
97: new UpdateValueStrategy() {
98:
99: /**
100: * {@inheritDoc}
101: *
102: * @see org.eclipse.core.databinding.UpdateValueStrategy#convert(java.lang.Object)
103: */
104: @Override
105: public Object convert(Object value) {
106: final String result = (String) super.convert(value);
107: return "Link " + result; //$NON-NLS-1$
108: }
109:
110: });
111: } catch (final NoLabelFoundException e) {
112: // FIXME Expectation?
113: getReportService().report(new RenderingFailedReport(e));
114: selectClass.setText("Link "); //$NON-NLS-1$
115: selectClass.setToolTipText("Link "); //$NON-NLS-1$
116: }
117: selectClass.addSelectionListener(new SelectionAdapter() {
118:
119: /**
120: * {@inheritDoc}
121: *
122: * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
123: */
124: @Override
125: public void widgetSelected(SelectionEvent e) {
126: super.widgetSelected(e);
127: linkValue(composite.getShell());
128: composite.layout(true, true);
129: }
130:
131: });
132:
133: final Button unset = new Button(composite, SWT.PUSH);
134: unset.setText("Unset"); //$NON-NLS-1$
135: unset.setToolTipText("Unset"); //$NON-NLS-1$
136: final IObservableValue observableValue = getEMFFormsDatabinding()
137: .getObservableValue(getVElement().getDomainModelReference(), getViewModelContext().getDomainModel());
138: final EObject eObject = (EObject) ((IObserving) observableValue).getObserved();
139: final EStructuralFeature structuralFeature = (EStructuralFeature) observableValue.getValueType();
140: observableValue.dispose();
141:
142: unset.addSelectionListener(new SelectionAdapter() {
143:
144: /**
145: * {@inheritDoc}
146: *
147: * @see org.eclipse.swt.events.SelectionAdapter#widgetSelected(org.eclipse.swt.events.SelectionEvent)
148: */
149: @Override
150: public void widgetSelected(SelectionEvent e) {
151: super.widgetSelected(e);
152: eObject.eUnset(structuralFeature);
153: composite.layout(true, true);
154: }
155:
156: });
157:
158: return composite;
159: }
160:
161: /**
162: * This method should be overwritten to provide a correct selection mechanism.
163: *
164: * @param shell the Shell
165: */
166: protected abstract void linkValue(Shell shell);
167:
168: /**
169: * Shows an error message dialog indicating a failed value link due to an exception.
170: *
171: * @param shell The parent {@link Shell} of the message dialog
172: * @param ex The {@link Exception} causing the failure
173: */
174: protected void showLinkValueFailedMessageDialog(Shell shell, final Exception ex) {
175: final MessageDialog dialog = new MessageDialog(
176: shell, "Link Value Failed", null, //$NON-NLS-1$
177: "The value could not be linked due to an exception: " + ex.getMessage(), MessageDialog.ERROR, new String[] { //$NON-NLS-1$
178: JFaceResources.getString(IDialogLabelKeys.OK_LABEL_KEY) },
179: 0);
180:
181: new ECPDialogExecutor(dialog) {
182: @Override
183: public void handleResult(int codeResult) {
184: // no op
185: }
186: }.execute();
187: }
188:
189: /**
190: * {@inheritDoc}
191: *
192: * @see org.eclipse.emf.ecp.view.internal.editor.controls.EReferenceLabelControlSWTRenderer#dispose()
193: */
194: @Override
195: public void dispose() {
196: viewModelDBC.dispose();
197: super.dispose();
198: }
199: }
![[Jenkins]](/ecp/static/e8bbdb94/images/svgs/logo.svg){kind=logo}
