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Package: LinkFeatureControlRenderer
LinkFeatureControlRenderer
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| LinkFeatureControlRenderer(VControl, ViewModelContext, ReportService) |
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| getEObject() |
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| getRootEClass(Notifier) |
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| linkValue(Shell) |
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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: * Alexandra Buzila - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.view.internal.editor.controls;
15:
16: import java.util.List;
17:
18: import javax.inject.Inject;
19:
20: import org.eclipse.core.databinding.observable.IObserving;
21: import org.eclipse.core.databinding.observable.value.IObservableValue;
22: import org.eclipse.core.runtime.IStatus;
23: import org.eclipse.core.runtime.Status;
24: import org.eclipse.emf.common.notify.AdapterFactory;
25: import org.eclipse.emf.common.notify.Notifier;
26: import org.eclipse.emf.ecore.EClass;
27: import org.eclipse.emf.ecore.EObject;
28: import org.eclipse.emf.ecore.EReference;
29: import org.eclipse.emf.ecore.EStructuralFeature;
30: import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
31: import org.eclipse.emf.ecp.view.spi.editor.controls.AbstractFilteredReferenceCommand;
32: import org.eclipse.emf.ecp.view.spi.editor.controls.Helper;
33: import org.eclipse.emf.ecp.view.spi.model.VControl;
34: import org.eclipse.emf.ecp.view.spi.model.VFeaturePathDomainModelReference;
35: import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
36: import org.eclipse.emf.edit.provider.ReflectiveItemProviderAdapterFactory;
37: import org.eclipse.emfforms.spi.common.report.AbstractReport;
38: import org.eclipse.emfforms.spi.common.report.ReportService;
39: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
40: import org.eclipse.jface.viewers.TreePath;
41: import org.eclipse.swt.widgets.Shell;
42:
43: /**
44: * SWT Renderer for linking a {@link EStructuralFeature domain model feature} to a
45: * {@link VFeaturePathDomainModelReference}.
46: */
47: public class LinkFeatureControlRenderer extends EditableEReferenceLabelControlSWTRenderer {
48:
49: /**
50: * Default constructor.
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: @Inject
57: public LinkFeatureControlRenderer(VControl vElement, ViewModelContext viewContext, ReportService reportService) {
58: super(vElement, viewContext, reportService);
59: }
60:
61: @Override
62: protected void linkValue(Shell shell) {
63: final EObject eObject;
64: try {
65: eObject = getEObject();
66: } catch (final DatabindingFailedException ex) {
67: showLinkValueFailedMessageDialog(shell, ex);
68: return;
69: }
70: final ComposedAdapterFactory adapterFactory = new ComposedAdapterFactory(new AdapterFactory[] {
71: new ReflectiveItemProviderAdapterFactory(),
72: new ComposedAdapterFactory(ComposedAdapterFactory.Descriptor.Registry.INSTANCE) });
73:
74: final FilteredReferenceCommand referenceCommand = new FilteredReferenceCommand(eObject, adapterFactory, shell);
75:• if (referenceCommand.canExecute()) {
76: referenceCommand.execute();
77: }
78: }
79:
80: /**
81: * @return the domain model EObject
82: * @throws DatabindingFailedException if the
83: */
84: private EObject getEObject() throws DatabindingFailedException {
85: final IObservableValue observableValue = getEMFFormsDatabinding()
86: .getObservableValue(getVElement().getDomainModelReference(), getViewModelContext().getDomainModel());
87: return (EObject) ((IObserving) observableValue).getObserved();
88: }
89:
90: /**
91: * The command for linking the reference.
92: */
93: private class FilteredReferenceCommand extends AbstractFilteredReferenceCommand<EStructuralFeature> {
94:
95: FilteredReferenceCommand(final Notifier notifier, ComposedAdapterFactory composedAdapterFactory,
96: Shell shell) {
97:
98: super(notifier, composedAdapterFactory, shell, getRootEClass(notifier),
99: new ECPSelectionStatusValidator() {
100:
101: @Override
102: public IStatus validate(Object[] selection) {
103:
104: if (selection.length != 0 && EStructuralFeature.class.isInstance(selection[0])) {
105: final TreePath treePath = getTreePath();
106: if (!Helper
107: .hasFeaturePropertyDescriptor(EStructuralFeature.class.cast(selection[0])
108: .getEContainingClass(), treePath)) {
109: // FIXME Hack, for allowing the selection of EStructuralFeatures w/o property
110: // descriptors. Should return error.
111: return new Status(IStatus.WARNING,
112: org.eclipse.emf.ecp.view.internal.editor.controls.Activator.PLUGIN_ID,
113: "The selected " + EStructuralFeature.class.getSimpleName() //$NON-NLS-1$
114: + " has no PropertyDescriptor."); //$NON-NLS-1$
115: }
116: return Status.OK_STATUS;
117: }
118: return new Status(IStatus.ERROR,
119: org.eclipse.emf.ecp.view.internal.editor.controls.Activator.PLUGIN_ID,
120: "This is not an " + EStructuralFeature.class.getSimpleName() + "."); //$NON-NLS-1$ //$NON-NLS-2$
121: }
122: }, false);
123: }
124:
125: @Override
126: protected void setSelectedValues(EStructuralFeature selectedFeature, List<EReference> bottomUpPath) {
127: try {
128: final VFeaturePathDomainModelReference modelReference = (VFeaturePathDomainModelReference) getEObject();
129: modelReference.setDomainModelEFeature(selectedFeature);
130: modelReference.getDomainModelEReferencePath().clear();
131: modelReference.getDomainModelEReferencePath().addAll(bottomUpPath);
132: } catch (final DatabindingFailedException ex) {
133: getReportService().report(new AbstractReport(ex));
134: }
135: }
136:
137: }
138:
139: /**
140: * Allows to retrieve the root eclass necessary to select the {@link VFeaturePathDomainModelReference}.
141: *
142: * @param notifier The {@link Notifier} triggering the selection
143: * @return The {@link EClass} that should be used as root
144: */
145: protected EClass getRootEClass(Notifier notifier) {
146: return Helper.getRootEClass((EObject) notifier);
147: }
148:
149: }