| /******************************************************************************* |
| * 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.jdt.internal.ui.viewsupport; |
| |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.IPath; |
| |
| import org.eclipse.core.resources.IStorage; |
| |
| import org.eclipse.swt.graphics.Image; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.viewers.LabelProvider; |
| |
| import org.eclipse.ui.IEditorRegistry; |
| import org.eclipse.ui.IFileEditorMapping; |
| import org.eclipse.ui.ISharedImages; |
| import org.eclipse.ui.PlatformUI; |
| |
| /** |
| * Standard label provider for IStorage objects. |
| * Use this class when you want to present IStorage objects in a viewer. |
| */ |
| public class StorageLabelProvider extends LabelProvider { |
| |
| private IEditorRegistry fEditorRegistry= null; |
| private Map fJarImageMap= new HashMap(10); |
| private Image fDefaultImage; |
| |
| private IEditorRegistry getEditorRegistry() { |
| if (fEditorRegistry == null) |
| fEditorRegistry= PlatformUI.getWorkbench().getEditorRegistry(); |
| return fEditorRegistry; |
| } |
| |
| /* (non-Javadoc) |
| * @see ILabelProvider#getImage |
| */ |
| public Image getImage(Object element) { |
| if (element instanceof IStorage) |
| return getImageForJarEntry((IStorage)element); |
| |
| return super.getImage(element); |
| } |
| |
| /* (non-Javadoc) |
| * @see ILabelProvider#getText |
| */ |
| public String getText(Object element) { |
| if (element instanceof IStorage) |
| return ((IStorage)element).getName(); |
| |
| return super.getText(element); |
| } |
| |
| /* (non-Javadoc) |
| * |
| * @see IBaseLabelProvider#dispose |
| */ |
| public void dispose() { |
| if (fJarImageMap != null) { |
| Iterator each= fJarImageMap.values().iterator(); |
| while (each.hasNext()) { |
| Image image= (Image)each.next(); |
| image.dispose(); |
| } |
| fJarImageMap= null; |
| } |
| fDefaultImage= null; |
| } |
| |
| /* |
| * Gets and caches an image for a JarEntryFile. |
| * The image for a JarEntryFile is retrieved from the EditorRegistry. |
| */ |
| private Image getImageForJarEntry(IStorage element) { |
| if (fJarImageMap == null) |
| return getDefaultImage(); |
| |
| if (element == null || element.getName() == null) |
| return getDefaultImage(); |
| |
| // Try to find icon for full name |
| String name= element.getName(); |
| Image image= (Image)fJarImageMap.get(name); |
| if (image != null) |
| return image; |
| IFileEditorMapping[] mappings= getEditorRegistry().getFileEditorMappings(); |
| int i= 0; |
| while (i < mappings.length) { |
| if (mappings[i].getLabel().equals(name)) |
| break; |
| i++; |
| } |
| String key= name; |
| if (i == mappings.length) { |
| // Try to find icon for extension |
| IPath path= element.getFullPath(); |
| if (path == null) |
| return getDefaultImage(); |
| key= path.getFileExtension(); |
| if (key == null) |
| return getDefaultImage(); |
| image= (Image)fJarImageMap.get(key); |
| if (image != null) |
| return image; |
| } |
| |
| // Get the image from the editor registry |
| ImageDescriptor desc= getEditorRegistry().getImageDescriptor(name); |
| image= desc.createImage(); |
| |
| fJarImageMap.put(key, image); |
| |
| return image; |
| } |
| |
| private Image getDefaultImage() { |
| if (fDefaultImage == null) |
| fDefaultImage= PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FILE); |
| return fDefaultImage; |
| } |
| } |