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/*******************************************************************************
* Copyright (c) 2008, 2010 Mia-Software.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Nicolas Bros (Mia-Software) - initial API and implementation
* Vincent Lorenzo (CEA-LIST) - bug 341238 - We need to be able to specify which column have to be hidden/visible using the customization mechanism
* Gregoire Dupe (Mia-Software) - Bug 369987 - [Restructuring][Table] Switch to the new customization and facet framework
* Nicolas Bros (Mia-Software) - Bug 379683 - customizable Tree content provider
*******************************************************************************/
package org.eclipse.papyrus.emf.facet.custom.ui.internal;
import java.net.URL;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.osgi.util.NLS;
import org.eclipse.papyrus.emf.facet.util.core.Logger;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
/** A singleton image provider, which caches image descriptors */
public final class ImageProvider {
private ImageProvider() {
// This class must only be instantiated by getInstance().
}
private static ImageProvider instance;
public static ImageProvider getInstance() {
if (ImageProvider.instance == null) {
ImageProvider.instance = new ImageProvider();
}
return ImageProvider.instance;
}
private Image uiCustomIcon = null;
private Image grayedUiCustomIcon;
private Image linkIcon = null;
private Image linkUniDirIcon = null;
private Image linkFacetIcon = null;
private Image aggregIcon = null;
private Image aggregUniDirIcon = null;
private Image invAggregIcon = null;
private Image attributeIcon = null;
private Image attribFacetIcon = null;
private Image featureIcon = null;
private static final String UI_CUSTOM = "icons/uiCustom.gif"; //$NON-NLS-1$
private static final String AGGREG_UNIDIR = "icons/aggreg_unidir.gif"; //$NON-NLS-1$
private static final String AGGREG_ICON_PATH = "icons/aggreg.gif"; //$NON-NLS-1$
private static final String ATTRIBUTE_FACET = "icons/attribute_facet"; //$NON-NLS-1$
private static final String ATTRIBUTE = "icons/attributes.gif"; //$NON-NLS-1$
private static final String INV_AGGREG = "icons/inv_aggreg.gif"; //$NON-NLS-1$
private static final String LINK_FACET = "icons/link_unidir_facet.gif"; //$NON-NLS-1$
private static final String LINK_UNIDIR = "icons/link_unidir.gif"; //$NON-NLS-1$
private static final String LINK_ICON_PATH = "icons/link.gif"; //$NON-NLS-1$
private static final String FEATURE_ICON_PATH = "icons/feature.gif"; //$NON-NLS-1$
/**
* Create an image descriptor from a resource
*
* @param resourcePath
* the path of the resource (in the bundle)
* @return the image descriptor
*/
private static ImageDescriptor createImageDescriptor(final String resourcePath) {
final URL url = Activator.getDefault().getBundle().getResource(resourcePath);
ImageDescriptor result;
if (url == null) {
Logger.logError(NLS.bind("Resource not found: {0}", //$NON-NLS-1$
resourcePath), Activator.getDefault());
result = ImageDescriptor.getMissingImageDescriptor();
} else {
result = ImageDescriptor.createFromURL(url);
}
return result;
}
/** Return an icon for "uiCustom" */
public Image getUiCustomIcon() {
if (this.uiCustomIcon == null) {
this.uiCustomIcon = createImageDescriptor(ImageProvider.UI_CUSTOM)
.createImage();
}
return this.uiCustomIcon;
}
public Image getGrayedUiCustomIcon() {
if (this.grayedUiCustomIcon == null) {
this.grayedUiCustomIcon = new Image(Display.getCurrent(), getUiCustomIcon(), SWT.IMAGE_GRAY);
}
return this.grayedUiCustomIcon;
}
/** Return the icon representing a bidirectional link */
public Image getLinkIcon() {
if (this.linkIcon == null) {
this.linkIcon = createImageDescriptor(ImageProvider.LINK_ICON_PATH).createImage();
}
return this.linkIcon;
}
/** Return the icon representing an unidirectional link */
public Image getUnidirectionalLinkIcon() {
if (this.linkUniDirIcon == null) {
this.linkUniDirIcon = createImageDescriptor(ImageProvider.LINK_UNIDIR)
.createImage();
}
return this.linkUniDirIcon;
}
/** Return the icon representing a facet reference */
public Image getFacetLinkIcon() {
if (this.linkFacetIcon == null) {
this.linkFacetIcon = createImageDescriptor(ImageProvider.LINK_FACET)
.createImage();
}
return this.linkFacetIcon;
}
/** Return the icon representing a composition link */
public Image getAggregIcon() {
if (this.aggregIcon == null) {
this.aggregIcon = createImageDescriptor(ImageProvider.AGGREG_ICON_PATH).createImage();
}
return this.aggregIcon;
}
/** Return the icon representing an unidirectional composition link */
public Image getUnidirectionalAggregIcon() {
if (this.aggregUniDirIcon == null) {
this.aggregUniDirIcon = createImageDescriptor(ImageProvider.AGGREG_UNIDIR)
.createImage();
}
return this.aggregUniDirIcon;
}
/** Return the icon representing a reverse composition link */
public Image getInvAggregIcon() {
if (this.invAggregIcon == null) {
this.invAggregIcon = createImageDescriptor(ImageProvider.INV_AGGREG)
.createImage();
}
return this.invAggregIcon;
}
/** Return the "attribute" icon */
public Image getAttributeIcon() {
if (this.attributeIcon == null) {
this.attributeIcon = createImageDescriptor(ImageProvider.ATTRIBUTE)
.createImage();
}
return this.attributeIcon;
}
/** Return the "facet attribute" icon */
public Image getFacetAttributeIcon() {
if (this.attribFacetIcon == null) {
this.attribFacetIcon = createImageDescriptor(ImageProvider.ATTRIBUTE_FACET)
.createImage();
}
return this.attribFacetIcon;
}
/** Return the "feature" icon */
public Image getFeatureIcon() {
if (this.featureIcon == null) {
this.featureIcon = createImageDescriptor(ImageProvider.FEATURE_ICON_PATH).createImage();
}
return this.featureIcon;
}
}
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