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Package: AutocompleteTextControlSWTRenderer
AutocompleteTextControlSWTRenderer
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| AutocompleteTextControlSWTRenderer(VControl, ViewModelContext, ReportService, EMFFormsDatabinding, EMFFormsLabelProvider, VTViewTemplateProvider) |
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| createBindings(Viewer) |
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| createJFaceViewer(Composite) |
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| getProposals() |
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| getUnsetText() |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2015 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: * Johannes Faltermeier - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emfforms.internal.swt.control.text.autocomplete.renderer;
15:
16: import java.util.Collections;
17: import java.util.List;
18:
19: import javax.inject.Inject;
20:
21: import org.eclipse.core.databinding.Binding;
22: import org.eclipse.core.databinding.observable.IObserving;
23: import org.eclipse.core.databinding.observable.value.IObservableValue;
24: import org.eclipse.emf.ecore.EAttribute;
25: import org.eclipse.emf.ecore.EObject;
26: import org.eclipse.emf.ecp.view.spi.context.ViewModelContext;
27: import org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlJFaceViewerSWTRenderer;
28: import org.eclipse.emf.ecp.view.spi.model.VControl;
29: import org.eclipse.emf.ecp.view.template.model.VTViewTemplateProvider;
30: import org.eclipse.emfforms.internal.swt.control.text.autocomplete.MessageKeys;
31: import org.eclipse.emfforms.spi.common.report.ReportService;
32: import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;
33: import org.eclipse.emfforms.spi.core.services.databinding.EMFFormsDatabinding;
34: import org.eclipse.emfforms.spi.core.services.label.EMFFormsLabelProvider;
35: import org.eclipse.emfforms.spi.localization.LocalizationServiceHelper;
36: import org.eclipse.emfforms.spi.swt.control.text.autocomplete.viewservice.AutocompleteViewModelService;
37: import org.eclipse.jface.databinding.swt.ISWTObservableValue;
38: import org.eclipse.jface.databinding.swt.typed.WidgetProperties;
39: import org.eclipse.jface.fieldassist.AutoCompleteField;
40: import org.eclipse.jface.fieldassist.ComboContentAdapter;
41: import org.eclipse.jface.viewers.ArrayContentProvider;
42: import org.eclipse.jface.viewers.ComboViewer;
43: import org.eclipse.jface.viewers.Viewer;
44: import org.eclipse.swt.SWT;
45: import org.eclipse.swt.widgets.Composite;
46:
47: /**
48: * The text control renderer allows to enter text while given autocompletion proposals. Moreover it is possible to
49: * select a proposed value from a combo box.
50: *
51: * @author jfaltermeier
52: *
53: */
54: public class AutocompleteTextControlSWTRenderer extends SimpleControlJFaceViewerSWTRenderer {
55:
56: /**
57: * Constructs a new {@link AutocompleteViewModelService}.
58: *
59: * @param vElement the view model element to be rendered
60: * @param viewContext the view context
61: * @param reportService The {@link ReportService}
62: * @param emfFormsDatabinding The {@link EMFFormsDatabinding}
63: * @param emfFormsLabelProvider The {@link EMFFormsLabelProvider}
64: * @param vtViewTemplateProvider The {@link VTViewTemplateProvider}
65: */
66: @Inject
67: public AutocompleteTextControlSWTRenderer(
68: VControl vElement,
69: ViewModelContext viewContext,
70: ReportService reportService,
71: EMFFormsDatabinding emfFormsDatabinding,
72: EMFFormsLabelProvider emfFormsLabelProvider,
73: VTViewTemplateProvider vtViewTemplateProvider) {
74: super(vElement, viewContext, reportService, emfFormsDatabinding, emfFormsLabelProvider, vtViewTemplateProvider);
75: }
76:
77: /**
78: * {@inheritDoc}
79: *
80: * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlJFaceViewerSWTRenderer#createBindings(org.eclipse.jface.viewers.Viewer)
81: */
82: @Override
83: protected Binding[] createBindings(Viewer viewer) throws DatabindingFailedException {
84: final ISWTObservableValue targetObservable = WidgetProperties.text()
85: .observe(ComboViewer.class.cast(viewer).getCombo());
86: final IObservableValue modelObservable = getModelValue();
87: final Binding binding = getDataBindingContext().bindValue(targetObservable, modelObservable);
88: return new Binding[] { binding };
89: }
90:
91: /**
92: * {@inheritDoc}
93: *
94: * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlJFaceViewerSWTRenderer#createJFaceViewer(org.eclipse.swt.widgets.Composite)
95: */
96: @Override
97: protected Viewer createJFaceViewer(Composite parent) throws DatabindingFailedException {
98: final ComboViewer combo = new ComboViewer(parent, SWT.DROP_DOWN);
99: combo.setContentProvider(ArrayContentProvider.getInstance());
100: combo.setInput(getProposals());
101: new AutoCompleteField(
102: combo.getCombo(),
103: new ComboContentAdapter(),
104: combo.getCombo().getItems());
105: return combo;
106: }
107:
108: /**
109: * Returns the list of proposals.
110: *
111: * @return the list
112: * @throws DatabindingFailedException in case the model value could not be created
113: */
114: List<String> getProposals() throws DatabindingFailedException {
115: final AutocompleteViewModelService service = getViewModelContext()
116: .getService(AutocompleteViewModelService.class);
117:• if (service == null) {
118: /* reported by #getService(Class) */
119: return Collections.emptyList();
120: }
121: final IObservableValue modelValue = getModelValue();
122: final EObject object = EObject.class.cast(IObserving.class.cast(modelValue).getObserved());
123: final EAttribute attribute = EAttribute.class.cast(modelValue.getValueType());
124: /* do not dispose the model value here, since future calls to #getModelValue will return a disposed observale */
125: return service.getProposals(object, attribute);
126: }
127:
128: /**
129: * {@inheritDoc}
130: *
131: * @see org.eclipse.emf.ecp.view.spi.core.swt.SimpleControlSWTRenderer#getUnsetText()
132: */
133: @Override
134: protected String getUnsetText() {
135: return LocalizationServiceHelper.getString(getClass(), MessageKeys.AutocompleteTextControlSWTRenderer_Set);
136: }
137:
138: }