| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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.gef.ui.palette.customize; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Image; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.viewers.IColorProvider; |
| import org.eclipse.jface.viewers.ILabelProvider; |
| import org.eclipse.jface.viewers.ILabelProviderListener; |
| import org.eclipse.jface.viewers.TreeViewer; |
| |
| import org.eclipse.draw2d.ColorConstants; |
| |
| import org.eclipse.gef.internal.InternalImages; |
| import org.eclipse.gef.palette.PaletteContainer; |
| import org.eclipse.gef.palette.PaletteEntry; |
| import org.eclipse.gef.palette.PaletteSeparator; |
| |
| /** |
| * This class is the ILabelProvider for the |
| * {@link org.eclipse.jface.viewers.TreeViewer} used in |
| * {@link org.eclipse.gef.ui.palette.customize.PaletteCustomizerDialog}. |
| * |
| * @author Pratik Shah |
| */ |
| class PaletteLabelProvider implements ILabelProvider, IColorProvider { |
| |
| private Map imageCache = new HashMap(); |
| |
| /** |
| * Constructor |
| * |
| * @param viewer |
| * The TreeViewer for which this instance is a LabelProvider |
| */ |
| public PaletteLabelProvider(TreeViewer viewer) { |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.IColorProvider#getBackground(Object) |
| */ |
| public Color getBackground(Object element) { |
| return null; |
| } |
| |
| private Image getCachedImage(ImageDescriptor descriptor) { |
| Image image = (Image) imageCache.get(descriptor); |
| if (image == null) { |
| image = descriptor.createImage(); |
| imageCache.put(descriptor, image); |
| } |
| return image; |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.IColorProvider#getForeground(Object) |
| */ |
| public Color getForeground(Object element) { |
| PaletteEntry entry = (PaletteEntry) element; |
| if (!entry.isVisible() || !entry.getParent().isVisible()) { |
| return ColorConstants.gray; |
| } |
| return null; |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.ILabelProvider#getImage(Object) |
| */ |
| public Image getImage(Object element) { |
| PaletteEntry entry = (PaletteEntry) element; |
| ImageDescriptor descriptor = entry.getSmallIcon(); |
| if (descriptor == null) { |
| if (entry instanceof PaletteContainer) { |
| descriptor = InternalImages.DESC_FOLDER_OPEN; |
| } else if (entry instanceof PaletteSeparator) { |
| descriptor = InternalImages.DESC_SEPARATOR; |
| } else { |
| return null; |
| } |
| } |
| return getCachedImage(descriptor); |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.ILabelProvider#getText(Object) |
| */ |
| public String getText(Object element) { |
| return ((PaletteEntry) element).getLabel(); |
| } |
| |
| /** |
| * Not implemented |
| * |
| * @see org.eclipse.jface.viewers.IBaseLabelProvider#addListener(ILabelProviderListener) |
| */ |
| public void addListener(ILabelProviderListener listener) { |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.IBaseLabelProvider#dispose() |
| */ |
| public void dispose() { |
| Iterator images = imageCache.values().iterator(); |
| while (images.hasNext()) |
| ((Image) images.next()).dispose(); |
| imageCache = null; |
| } |
| |
| /** |
| * @see org.eclipse.jface.viewers.IBaseLabelProvider#isLabelProperty(Object, |
| * String) |
| */ |
| public boolean isLabelProperty(Object element, String property) { |
| return false; |
| } |
| |
| /** |
| * Not implemented |
| * |
| * @see org.eclipse.jface.viewers.IBaseLabelProvider#removeListener(ILabelProviderListener) |
| */ |
| public void removeListener(ILabelProviderListener listener) { |
| } |
| |
| } |