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AttributeValueControlSWTRenderer$1
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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: * Eugen - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.view.template.internal.tooling.controls;
15:
16: import org.eclipse.core.databinding.Binding;
17: import org.eclipse.core.databinding.UpdateValueStrategy;
18: import org.eclipse.core.databinding.observable.IObserving;
19: import org.eclipse.core.databinding.observable.value.IObservableValue;
20: import org.eclipse.emf.common.command.Command;
21: import org.eclipse.emf.ecore.EObject;
22: import org.eclipse.emf.ecore.EStructuralFeature;
23: import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
24: import org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTControlSWTRenderer;
25: import org.eclipse.emf.ecp.view.spi.model.VControl;
26: import org.eclipse.emf.ecp.view.template.internal.tooling.Messages;
27: import org.eclipse.emf.ecp.view.template.internal.tooling.util.ValueSelectionHelper;
28: import org.eclipse.emf.ecp.view.template.model.VTViewTemplateProvider;
29: import org.eclipse.emf.ecp.view.template.selector.viewModelElement.model.VTViewModelElementSelector;
30: import org.eclipse.emf.edit.command.SetCommand;
31: import org.eclipse.emf.edit.domain.EditingDomain;
32: import org.eclipse.emfforms.spi.common.report.ReportService;
33: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
34: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedReport;
35: import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding;
36: import org.eclipse.emfforms.spi.core.services.label.EMFFormsLabelProvider;
37: import org.eclipse.jface.databinding.swt.typed.WidgetProperties;
38: import org.eclipse.jface.layout.GridDataFactory;
39: import org.eclipse.jface.layout.GridLayoutFactory;
40: import org.eclipse.swt.SWT;
41: import org.eclipse.swt.events.SelectionAdapter;
42: import org.eclipse.swt.events.SelectionEvent;
43: import org.eclipse.swt.widgets.Button;
44: import org.eclipse.swt.widgets.Composite;
45: import org.eclipse.swt.widgets.Control;
46: import org.eclipse.swt.widgets.Label;
47: import org.osgi.framework.BundleContext;
48: import org.osgi.framework.FrameworkUtil;
49: import org.osgi.framework.ServiceReference;
50:
51: /**
52: * Renderer for the
53: * {@link org.eclipse.emf.ecp.view.template.selector.viewModelElement.model.VTViewModelElementSelector#setAttributeValue(Object)
54: * VTViewModelElementSelector#setAttributeValue(Object)}.
55: *
56: * @author Eugen Neufeld
57: *
58: */
59: public class AttributeValueControlSWTRenderer extends SimpleControlSWTControlSWTRenderer {
60:
61: private static final EMFFormsDatabinding EMFFORMS_DATABINDING;
62: private static final EMFFormsLabelProvider EMFFORMS_LABELPROVIDER;
63: private static final VTViewTemplateProvider VT_VIEW_TEMPLATEPROVIDER;
64:
65: static {
66: final BundleContext bundleContext = FrameworkUtil.getBundle(AttributeValueControlSWTRenderer.class)
67: .getBundleContext();
68: final ServiceReference<EMFFormsDatabinding> emfFormsDatabindingServiceReference = bundleContext
69: .getServiceReference(EMFFormsDatabinding.class);
70: EMFFORMS_DATABINDING = bundleContext.getService(emfFormsDatabindingServiceReference);
71: final ServiceReference<EMFFormsLabelProvider> emfFormsLabelProviderServiceReference = bundleContext
72: .getServiceReference(EMFFormsLabelProvider.class);
73: EMFFORMS_LABELPROVIDER = bundleContext.getService(emfFormsLabelProviderServiceReference);
74: final ServiceReference<VTViewTemplateProvider> vtViewTemplateProviderServiceReference = bundleContext
75: .getServiceReference(VTViewTemplateProvider.class);
76: VT_VIEW_TEMPLATEPROVIDER = bundleContext.getService(vtViewTemplateProviderServiceReference);
77: }
78:
79: /**
80: * Default constructor.
81: *
82: * @param vElement the view model element to be rendered
83: * @param viewContext the view context
84: * @param reportService The {@link ReportService}
85: */
86: public AttributeValueControlSWTRenderer(VControl vElement, ViewModelContext viewContext,
87: ReportService reportService) {
88: super(vElement, viewContext, reportService, EMFFORMS_DATABINDING, EMFFORMS_LABELPROVIDER,
89: VT_VIEW_TEMPLATEPROVIDER);
90: }
91:
92: @SuppressWarnings("unchecked")
93: @Override
94: protected Binding[] createBindings(Control control) throws DatabindingFailedException {
95: final Label label = (Label) Composite.class.cast(control).getChildren()[0];
96: final Binding binding = getDataBindingContext().bindValue(WidgetProperties.text().observe(label),
97: getModelValue(),
98: withPreSetValidation(new UpdateValueStrategy<String, String>(UpdateValueStrategy.POLICY_NEVER)),
99: new UpdateValueStrategy<String, String>() {
100:
101: @Override
102: public String convert(String value) {
103: return value;
104: }
105:
106: });
107: return new Binding[] { binding };
108: }
109:
110: @Override
111: protected Control createSWTControl(final Composite parent) {
112: final Composite composite = new Composite(parent, SWT.NONE);
113: composite.setBackgroundMode(SWT.INHERIT_FORCE);
114: GridLayoutFactory.fillDefaults().numColumns(2).equalWidth(false).applyTo(composite);
115: final Label label = new Label(composite, SWT.NONE);
116: GridDataFactory.fillDefaults().align(SWT.FILL, SWT.BEGINNING).grab(true, false).applyTo(label);
117:
118: final Button button = new Button(composite, SWT.PUSH);
119: button.setText(Messages.AttributeValueControlSWTRenderer_SelectAttributeValue);
120: GridDataFactory.fillDefaults().align(SWT.BEGINNING, SWT.BEGINNING).grab(false, false).applyTo(button);
121:
122: button.addSelectionListener(new SelectionAdapter() {
123: @Override
124: public void widgetSelected(SelectionEvent e) {
125: super.widgetSelected(e);
126: IObservableValue observableValue;
127: try {
128: observableValue = getEMFFormsDatabinding()
129: .getObservableValue(getVElement().getDomainModelReference(),
130: getViewModelContext().getDomainModel());
131: } catch (final DatabindingFailedException ex) {
132: getReportService().report(new DatabindingFailedReport(ex));
133: return;
134: }
135: final EObject eObject = (EObject) ((IObserving) observableValue).getObserved();
136: final EStructuralFeature structuralFeature = (EStructuralFeature) observableValue.getValueType();
137: observableValue.dispose();
138:
139: final Object result = ValueSelectionHelper.openValueSelectionDialog(parent.getShell(),
140: VTViewModelElementSelector.class.cast(eObject).getAttribute());
141: final EditingDomain editingDomain = getEditingDomain(eObject);
142: final Command command = SetCommand.create(editingDomain, eObject, structuralFeature, result);
143: editingDomain.getCommandStack().execute(command);
144: }
145: });
146:
147: return composite;
148: }
149:
150: @Override
151: protected String getUnsetText() {
152: return Messages.AttributeValueControlSWTRenderer_UnsetAttributeMessage;
153: }
154:
155: }
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