| /******************************************************************************* |
| * Copyright (c) 2000, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.model; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.viewers.ITableLabelProvider; |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.osgi.util.NLS; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.ui.IPerspectiveDescriptor; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.internal.IWorkbenchGraphicConstants; |
| import org.eclipse.ui.internal.WorkbenchImages; |
| import org.eclipse.ui.internal.WorkbenchMessages; |
| |
| /** |
| * A table label provider implementation for showing workbench perspectives |
| * (objects of type <code>IPerspectiveDescriptor</code>) in table- and |
| * tree-structured viewers. |
| * <p> |
| * Clients may instantiate this class. It is not intended to be subclassed. |
| * </p> |
| * |
| * @since 3.0 |
| */ |
| public final class PerspectiveLabelProvider extends LabelProvider implements |
| ITableLabelProvider { |
| |
| /** |
| * List of all Image objects this label provider is responsible for. |
| */ |
| private HashMap imageCache = new HashMap(5); |
| |
| /** |
| * Indicates whether the default perspective is visually marked. |
| */ |
| private boolean markDefault; |
| |
| /** |
| * Creates a new label provider for perspectives. |
| * The default perspective is visually marked. |
| */ |
| public PerspectiveLabelProvider() { |
| this(true); |
| } |
| |
| /** |
| * Creates a new label provider for perspectives. |
| * |
| * @param markDefault <code>true</code> if the default perspective is to be |
| * visually marked, and <code>false</code> if the default perspective is |
| * not treated as anything special |
| */ |
| public PerspectiveLabelProvider(boolean markDefault) { |
| super(); |
| this.markDefault = markDefault; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ILabelProvider |
| */ |
| public final Image getImage(Object element) { |
| if (element instanceof IPerspectiveDescriptor) { |
| IPerspectiveDescriptor desc = (IPerspectiveDescriptor) element; |
| ImageDescriptor imageDescriptor = desc.getImageDescriptor(); |
| if (imageDescriptor == null) { |
| imageDescriptor = WorkbenchImages |
| .getImageDescriptor(IWorkbenchGraphicConstants.IMG_ETOOL_DEF_PERSPECTIVE); |
| } |
| Image image = (Image) imageCache.get(imageDescriptor); |
| if (image == null) { |
| image = imageDescriptor.createImage(); |
| imageCache.put(imageDescriptor, image); |
| } |
| return image; |
| } |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ILabelProvider |
| */ |
| public final void dispose() { |
| for (Iterator i = imageCache.values().iterator(); i.hasNext();) { |
| ((Image) i.next()).dispose(); |
| } |
| imageCache.clear(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ILabelProvider |
| */ |
| public final String getText(Object element) { |
| if (element instanceof IPerspectiveDescriptor) { |
| IPerspectiveDescriptor desc = (IPerspectiveDescriptor) element; |
| String label = desc.getLabel(); |
| if (markDefault) { |
| String def = PlatformUI.getWorkbench().getPerspectiveRegistry() |
| .getDefaultPerspective(); |
| if (desc.getId().equals(def)) { |
| label = NLS.bind(WorkbenchMessages.PerspectivesPreference_defaultLabel, label ); |
| } |
| } |
| return label; |
| } |
| return WorkbenchMessages.PerspectiveLabelProvider_unknown; |
| } |
| |
| /** |
| * @see ITableLabelProvider#getColumnImage |
| */ |
| public final Image getColumnImage(Object element, int columnIndex) { |
| return getImage(element); |
| } |
| |
| /** |
| * @see ITableLabelProvider#getColumnText |
| */ |
| public final String getColumnText(Object element, int columnIndex) { |
| return getText(element); |
| } |
| } |