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/*******************************************************************************
* Copyright (c) 2000, 2017 IBM Corporation and others.
*
* 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:
* IBM Corporation - initial API and implementation
* Benjamin Muskalla - bug 77710
* Lars Vogel <Lars.Vogel@vogella.com> - Bug 430603, 472654
* Simon Scholz <simon.scholz@vogella.com> - Bug 455527
*******************************************************************************/
package org.eclipse.ui.internal.dialogs;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.ui.model.application.MApplicationElement;
import org.eclipse.e4.ui.model.application.descriptor.basic.MPartDescriptor;
import org.eclipse.e4.ui.model.application.ui.advanced.MPerspective;
import org.eclipse.e4.ui.model.application.ui.basic.MWindow;
import org.eclipse.e4.ui.workbench.IResourceUtilities;
import org.eclipse.e4.ui.workbench.modeling.EModelService;
import org.eclipse.e4.ui.workbench.modeling.EPartService;
import org.eclipse.e4.ui.workbench.swt.util.ISWTResourceUtilities;
import org.eclipse.emf.common.util.URI;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ColumnLabelProvider;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.internal.WorkbenchImages;
import org.eclipse.ui.internal.WorkbenchMessages;
/**
* Provides labels for view children.
*/
public class ViewLabelProvider extends ColumnLabelProvider {
/**
* Image descriptor for enabled clear button.
*/
private static final String FOLDER_ICON = "org.eclipse.e4.descriptor.folder"; //$NON-NLS-1$
private Map<String, Image> imageMap = new HashMap<>();
private IEclipseContext context;
private final Color dimmedForeground;
private EModelService modelService;
private MWindow window;
private EPartService partService;
/**
* @param context
* @param modelService
* @param partService
* @param window the workbench window
* @param dimmedForeground the dimmed foreground color to use for views that are
* already open
*/
public ViewLabelProvider(IEclipseContext context, EModelService modelService, EPartService partService,
MWindow window, Color dimmedForeground) {
this.context = context;
this.modelService = modelService;
this.partService = partService;
this.window = window;
this.dimmedForeground = dimmedForeground;
}
@Override
public void dispose() {
for (Image image : imageMap.values()) {
image.dispose();
}
super.dispose();
}
@Override
public Image getImage(Object element) {
if (element instanceof MPartDescriptor) {
String iconURI = ((MPartDescriptor) element).getIconURI();
if (iconURI != null && iconURI.length() > 0) {
Image image = imageMap.get(iconURI);
if (image == null) {
ISWTResourceUtilities resUtils = (ISWTResourceUtilities) context.get(IResourceUtilities.class);
image = resUtils.imageDescriptorFromURI(URI.createURI(iconURI)).createImage();
imageMap.put(iconURI, image);
}
return image;
}
return null;
} else if (element instanceof String) {
Image image = imageMap.get(FOLDER_ICON);
if (image == null) {
ImageDescriptor desc = WorkbenchImages.getImageDescriptor(ISharedImages.IMG_OBJ_FOLDER);
image = desc.createImage();
imageMap.put(FOLDER_ICON, desc.createImage());
}
return image;
}
return null;
}
@Override
public String getText(Object element) {
String label = WorkbenchMessages.ViewLabel_unknown;
if (element instanceof String) {
label = (String) element;
} else if (element instanceof MPartDescriptor) {
label = ((MPartDescriptor) element).getLocalizedLabel();
}
return label;
}
@Override
public Color getForeground(Object element) {
if (element instanceof MApplicationElement) {
String elementId = ((MApplicationElement) element).getElementId();
MPerspective activePerspective = modelService.getActivePerspective(window);
if (partService.isPartOrPlaceholderInPerspective(elementId, activePerspective)) {
return dimmedForeground;
}
}
return null;
}
}
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