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/*******************************************************************************
* Copyright (c) 2000, 2008 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.pde.internal.ui.util;
import java.io.*;
import java.util.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.pde.core.plugin.IPluginModelBase;
import org.eclipse.pde.core.plugin.PluginRegistry;
import org.eclipse.pde.internal.ui.PDEPluginImages;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.ui.plugin.AbstractUIPlugin;
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_EXPORT = 4;
public static final int F_EDIT = 8;
public static final int F_BINARY = 16;
public static final int F_EXTERNAL = 32;
public static final int F_JAVA = 64;
public static final int F_JAR = 128;
public static final int F_PROJECT = 256;
public static final int F_OPTIONAL = 512;
public static final int F_INTERNAL = 1024;
public static final int F_FRIEND = 2048;
Hashtable<Object, Image> images = new Hashtable<Object, Image>();
ArrayList<Object> consumers = new ArrayList<Object>();
private Image fBlankImage;
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) {
dispose();
}
}
public void dispose() {
if (consumers.size() == 0) {
for (Enumeration<Image> elements = images.elements(); elements.hasMoreElements();) {
elements.nextElement().dispose();
}
images.clear();
if (fBlankImage != null) {
fBlankImage.dispose();
fBlankImage = null;
}
}
}
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 = 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 = 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[] {PDEPluginImages.DESC_ERROR_CO};
if ((flags & F_WARNING) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_WARNING_CO};
return null;
}
private ImageDescriptor[] getUpperRightOverlays(int flags) {
if ((flags & F_EXPORT) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_EXPORT_CO};
if ((flags & F_EDIT) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_DOC_CO};
if ((flags & F_JAVA) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_JAVA_CO};
return null;
}
private ImageDescriptor[] getLowerRightOverlays(int flags) {
if ((flags & F_JAR) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_JAR_CO};
if ((flags & F_PROJECT) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_PROJECT_CO};
if ((flags & F_OPTIONAL) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_OPTIONAL_CO};
if ((flags & F_INTERNAL) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_INTERNAL_CO};
if ((flags & F_FRIEND) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_FRIEND_CO};
return null;
}
private ImageDescriptor[] getUpperLeftOverlays(int flags) {
if ((flags & F_EXTERNAL) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_EXTERNAL_CO};
if ((flags & F_BINARY) != 0)
return new ImageDescriptor[] {PDEPluginImages.DESC_BINARY_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 getImageFromPlugin(String bundleID, String path) {
ImageDescriptor desc = AbstractUIPlugin.imageDescriptorFromPlugin(bundleID, path);
return (desc != null) ? get(desc) : getBlankImage();
}
public Image getImageFromPlugin(IPluginModelBase model, String relativePath) {
String platform = "platform:/plugin/"; //$NON-NLS-1$
if (relativePath.startsWith(platform)) {
relativePath = relativePath.substring(platform.length());
int index = relativePath.indexOf('/');
if (index == -1)
return null;
model = PluginRegistry.findModel(relativePath.substring(0, index));
if (model == null)
return null;
relativePath = relativePath.substring(index + 1);
}
String location = model.getInstallLocation();
if (location == null)
return null;
File pluginLocation = new File(location);
InputStream stream = null;
ZipFile jarFile = null;
try {
if (pluginLocation.isDirectory()) {
File file = new File(pluginLocation, relativePath);
if (file.exists())
stream = new FileInputStream(file);
else if (relativePath.length() > 5 && relativePath.startsWith("$nl$/")) { //$NON-NLS-1$
file = new File(pluginLocation, relativePath.substring(5));
if (file.exists())
stream = new FileInputStream(file);
}
} else {
jarFile = new ZipFile(pluginLocation, ZipFile.OPEN_READ);
ZipEntry manifestEntry = jarFile.getEntry(relativePath);
if (manifestEntry != null) {
stream = jarFile.getInputStream(manifestEntry);
} else if (relativePath.length() > 5 && relativePath.startsWith("$nl$/")) { //$NON-NLS-1$
manifestEntry = jarFile.getEntry(relativePath.substring(5));
if (manifestEntry != null) {
stream = jarFile.getInputStream(manifestEntry);
}
}
}
if (stream != null) {
ImageDescriptor desc = ImageDescriptor.createFromImageData(new ImageData(stream));
return get(desc);
}
} catch (FileNotFoundException e) {
} catch (IOException e) {
} finally {
try {
if (stream != null)
stream.close();
if (jarFile != null)
jarFile.close();
} catch (IOException e) {
}
}
return getBlankImage();
}
public Image getBlankImage() {
if (fBlankImage == null)
fBlankImage = ImageDescriptor.getMissingImageDescriptor().createImage();
return fBlankImage;
}
}
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