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Package: ECPValidationServiceLabelDecorator
ECPValidationServiceLabelDecorator
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| ECPValidationServiceLabelDecorator(TreeViewer, Notifier, DiagnosticCache) |
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| addListener(ILabelProviderListener) |
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| decorateImage(Image, Object) |
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| decorateText(String, Object) |
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| dispose() |
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| isLabelProperty(Object, String) |
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| refreshViewer(EObject) |
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| removeListener(ILabelProviderListener) |
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| updateViewer(EObject) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2018 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: * Christian W. Damus - bug 533522
14: ******************************************************************************/
15: package org.eclipse.emfforms.internal.swt.treemasterdetail.decorator.validation.ecp;
16:
17: import java.util.Collection;
18:
19: import org.eclipse.emf.common.notify.Notifier;
20: import org.eclipse.emf.ecore.EObject;
21: import org.eclipse.emf.ecore.resource.Resource;
22: import org.eclipse.emfforms.spi.swt.core.ui.SWTValidationHelper;
23: import org.eclipse.emfforms.spi.swt.treemasterdetail.diagnostic.DiagnosticCache;
24: import org.eclipse.emfforms.spi.swt.treemasterdetail.diagnostic.DiagnosticCache.ValidationListener;
25: import org.eclipse.jface.resource.DeviceResourceManager;
26: import org.eclipse.jface.resource.ImageDescriptor;
27: import org.eclipse.jface.resource.ResourceManager;
28: import org.eclipse.jface.viewers.DecorationOverlayIcon;
29: import org.eclipse.jface.viewers.ILabelDecorator;
30: import org.eclipse.jface.viewers.ILabelProviderListener;
31: import org.eclipse.jface.viewers.TreeViewer;
32: import org.eclipse.swt.graphics.Image;
33: import org.eclipse.swt.graphics.Point;
34: import org.eclipse.swt.graphics.Rectangle;
35:
36: /**
37: * Decorator showing diagnostics.
38: *
39: * @author Johannes Faltermeier
40: *
41: */
42: public class ECPValidationServiceLabelDecorator implements ILabelDecorator {
43:
44: private final DiagnosticCache cache;
45: private final TreeViewer viewer;
46:
47: private final ResourceManager images;
48:
49: /**
50: * Default constructor.
51: *
52: * @param viewer the {@link TreeViewer}
53: * @param input the input notifier
54: * @param cache the {@link DiagnosticCache}
55: */
56: public ECPValidationServiceLabelDecorator(TreeViewer viewer, Notifier input, DiagnosticCache cache) {
57: this.viewer = viewer;
58: this.cache = cache;
59: images = new DeviceResourceManager(viewer.getControl().getDisplay());
60:
61: cache.registerValidationListener(new ValidationListener() {
62:
63: @Override
64: public void revalidationOccurred(Collection<EObject> object, boolean potentialStructuralChange) {
65: if (potentialStructuralChange) {
66: for (final EObject o : object) {
67: refreshViewer(o);
68: }
69: } else {
70: for (final EObject o : object) {
71: updateViewer(o);
72: }
73: }
74: }
75: });
76: viewer.refresh();
77: }
78:
79: @Override
80: public Image decorateImage(Image image, Object element) {
81:• if (image == null) {
82: return image;
83: }
84:• if (!EObject.class.isInstance(element) && !Resource.class.isInstance(element)) {
85: return image;
86: }
87:
88: final org.eclipse.emf.common.util.Diagnostic diagnostic = cache.getCachedValue(element);
89: final int severity = diagnostic.getSeverity();
90: final ImageDescriptor validationOverlayDescriptor = SWTValidationHelper.INSTANCE
91: .getValidationOverlayDescriptor(severity);
92:• if (validationOverlayDescriptor == null) {
93: return image;
94: }
95: final Rectangle bounds = image.getBounds();
96: final Point size = new Point(bounds.width, bounds.height);
97: final DecorationOverlayIcon icon = new DecorationOverlayIcon(image,
98: new ImageDescriptor[] { validationOverlayDescriptor }, size);
99: return (Image) images.get(icon);
100: }
101:
102: /**
103: * Called in order to update the cache. This also triggers a viewer refresh.
104: *
105: * @param element The element which changed
106: */
107: protected void refreshViewer(EObject element) {
108: viewer.refresh(element, true);
109: }
110:
111: /**
112: * Called in order to update the cache. This also triggers a viewer update.
113: *
114: * @param element The element which changed
115: */
116: protected void updateViewer(EObject element) {
117: viewer.update(element, null);
118: }
119:
120: @Override
121: public String decorateText(String text, Object element) {
122: /* no op */
123: return text;
124: }
125:
126: @Override
127: public void addListener(ILabelProviderListener listener) {
128: /* no op */
129: }
130:
131: @Override
132: public boolean isLabelProperty(Object element, String property) {
133: /* no op */
134: return false;
135: }
136:
137: @Override
138: public void removeListener(ILabelProviderListener listener) {
139: /* no op */
140: }
141:
142: @Override
143: public void dispose() {
144: cache.dispose();
145: images.dispose();
146: }
147:
148: }