| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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.update.internal.ui.parts; |
| |
| import java.net.*; |
| import java.util.ArrayList; |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| |
| import org.eclipse.jface.resource.*; |
| import org.eclipse.jface.viewers.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.update.internal.ui.*; |
| |
| /** |
| * @version 1.0 |
| * @author |
| */ |
| public class SharedLabelProvider |
| extends LabelProvider |
| implements ITableLabelProvider { |
| public static final int F_ERROR = 1; |
| public static final int F_WARNING = 2; |
| public static final int F_CURRENT = 4; |
| public static final int F_INSTALLABLE = 8; |
| public static final int F_LINKED = 16; |
| public static final int F_MOD = 32; |
| public static final int F_UPDATED = 64; |
| public static final int F_UNCONFIGURED = 128; |
| public static final int F_ADD = 256; |
| public static final int F_DEL = 512; |
| |
| Hashtable images = new Hashtable(); |
| ArrayList consumers = new ArrayList(); |
| |
| public SharedLabelProvider() { |
| } |
| |
| public void connect(Object consumer) { |
| if (!consumers.contains(consumer)) |
| consumers.add(consumer); |
| } |
| |
| public void disconnect(Object consumer) { |
| consumers.remove(consumer); |
| if (consumers.size() == 0) { |
| reset(); |
| } |
| } |
| |
| public void dispose() { |
| reset(); |
| super.dispose(); |
| } |
| |
| private void reset() { |
| for (Enumeration iterator = images.elements(); iterator.hasMoreElements();) { |
| Image image = (Image) iterator.nextElement(); |
| image.dispose(); |
| } |
| images.clear(); |
| } |
| |
| public Image get(ImageDescriptor desc) { |
| return get(desc, 0); |
| } |
| |
| public Image get(ImageDescriptor desc, int flags) { |
| Object key = desc; |
| |
| if (flags != 0) { |
| key = getKey(desc.hashCode(), flags); |
| } |
| Image image = (Image) images.get(key); |
| if (image == null) { |
| image = createImage(desc, flags); |
| images.put(key, image); |
| } |
| return image; |
| } |
| |
| public Image get(Image image, int flags) { |
| if (flags==0) return image; |
| String key = getKey(image.hashCode(), flags); |
| Image resultImage = (Image)images.get(key); |
| if (resultImage == null) { |
| resultImage = createImage(image, flags); |
| images.put(key, resultImage); |
| } |
| return resultImage; |
| } |
| |
| private String getKey(long hashCode, int flags) { |
| return (""+hashCode) + ":"+flags; //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| |
| private Image createImage(ImageDescriptor baseDesc, int flags) { |
| if (flags == 0) { |
| return baseDesc.createImage(); |
| } |
| ImageDescriptor[] lowerLeft = getLowerLeftOverlays(flags); |
| ImageDescriptor[] upperRight = getUpperRightOverlays(flags); |
| ImageDescriptor[] lowerRight = getLowerRightOverlays(flags); |
| ImageDescriptor[] upperLeft = getUpperLeftOverlays(flags); |
| OverlayIcon compDesc = |
| new OverlayIcon( |
| baseDesc, |
| new ImageDescriptor[][] { upperRight, lowerRight, lowerLeft, upperLeft }); |
| return compDesc.createImage(); |
| } |
| |
| private Image createImage(Image baseImage, int flags) { |
| if (flags == 0) { |
| return baseImage; |
| } |
| ImageDescriptor[] lowerLeft = getLowerLeftOverlays(flags); |
| ImageDescriptor[] upperRight = getUpperRightOverlays(flags); |
| ImageDescriptor[] lowerRight = getLowerRightOverlays(flags); |
| ImageDescriptor[] upperLeft = getUpperLeftOverlays(flags); |
| ImageOverlayIcon compDesc = |
| new ImageOverlayIcon( |
| baseImage, |
| new ImageDescriptor[][] { upperRight, lowerRight, lowerLeft, upperLeft }); |
| return compDesc.createImage(); |
| } |
| |
| private ImageDescriptor[] getLowerLeftOverlays(int flags) { |
| if ((flags & F_ERROR) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_ERROR_CO }; |
| if ((flags & F_WARNING) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_WARNING_CO }; |
| return null; |
| } |
| |
| private ImageDescriptor[] getUpperRightOverlays(int flags) { |
| if ((flags & F_ADD) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_ADD_CO }; |
| if ((flags & F_DEL) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_DEL_CO }; |
| if ((flags & F_UNCONFIGURED) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_UNCONF_CO }; |
| if ((flags & F_LINKED) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_LINKED_CO }; |
| return null; |
| } |
| |
| private ImageDescriptor[] getLowerRightOverlays(int flags) { |
| if ((flags & F_CURRENT) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_CURRENT_CO }; |
| if ((flags & F_MOD) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_MOD_CO }; |
| /* |
| if ((flags & F_ADD) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_ADD_CO }; |
| if ((flags & F_DEL) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_DEL_CO }; |
| if ((flags & F_UNCONFIGURED) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_UNCONF_CO }; |
| */ |
| return null; |
| } |
| |
| private ImageDescriptor[] getUpperLeftOverlays(int flags) { |
| if ((flags & F_UPDATED) != 0) |
| return new ImageDescriptor[] { UpdateUIImages.DESC_UPDATED_CO }; |
| return null; |
| } |
| |
| public String getColumnText(Object obj, int index) { |
| return getText(obj); |
| } |
| public Image getColumnImage(Object obj, int index) { |
| return getImage(obj); |
| } |
| |
| public Image getImageFromURL( |
| URL installURL, |
| String subdirectoryAndFilename) { |
| Image image = null; |
| try { |
| URL newURL = new URL(installURL, subdirectoryAndFilename); |
| String key = newURL.toString(); |
| image = (Image)images.get(key); |
| if (image == null) { |
| ImageDescriptor desc = ImageDescriptor.createFromURL(newURL); |
| image = desc.createImage(); |
| images.put(key, image); |
| } |
| } catch (MalformedURLException e) { |
| } catch (SWTException e) { |
| } |
| return image; |
| } |
| } |