| /******************************************************************************* |
| * Copyright (c) 2004, 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.ui.internal.about; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.util.zip.CRC32; |
| import java.util.zip.CheckedInputStream; |
| |
| import org.eclipse.core.runtime.IBundleGroup; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.ui.branding.IBundleGroupConstants; |
| |
| /** |
| * A small class to manage the information related to IBundleGroup's. |
| * @since 3.0 |
| */ |
| public class AboutBundleGroupData extends AboutData { |
| private IBundleGroup bundleGroup; |
| |
| private URL licenseUrl; |
| |
| private URL featureImageUrl; |
| |
| private Long featureImageCrc; |
| |
| private ImageDescriptor featureImage; |
| |
| public AboutBundleGroupData(IBundleGroup bundleGroup) { |
| super(bundleGroup.getProviderName(), bundleGroup.getName(), bundleGroup |
| .getVersion(), bundleGroup.getIdentifier()); |
| this.bundleGroup = bundleGroup; |
| } |
| |
| public IBundleGroup getBundleGroup() { |
| return bundleGroup; |
| } |
| |
| public URL getLicenseUrl() { |
| if (licenseUrl == null) { |
| licenseUrl = getURL(bundleGroup |
| .getProperty(IBundleGroupConstants.LICENSE_HREF)); |
| } |
| |
| return licenseUrl; |
| } |
| |
| public URL getFeatureImageUrl() { |
| if (featureImageUrl == null) { |
| featureImageUrl = getURL(bundleGroup |
| .getProperty(IBundleGroupConstants.FEATURE_IMAGE)); |
| } |
| return featureImageUrl; |
| } |
| |
| public ImageDescriptor getFeatureImage() { |
| if (featureImage == null) { |
| featureImage = getImage(getFeatureImageUrl()); |
| } |
| return featureImage; |
| } |
| |
| public Long getFeatureImageCrc() { |
| if (featureImageCrc != null) { |
| return featureImageCrc; |
| } |
| |
| URL url = getFeatureImageUrl(); |
| if (url == null) { |
| return null; |
| } |
| |
| // Get the image bytes |
| InputStream in = null; |
| try { |
| CRC32 checksum = new CRC32(); |
| in = new CheckedInputStream(url.openStream(), checksum); |
| |
| // the contents don't matter, the read just needs a place to go |
| byte[] sink = new byte[1024]; |
| while (true) { |
| if (in.read(sink) <= 0) { |
| break; |
| } |
| } |
| |
| featureImageCrc = new Long(checksum.getValue()); |
| return featureImageCrc; |
| |
| } catch (IOException e) { |
| return null; |
| } finally { |
| if (in != null) { |
| try { |
| in.close(); |
| } catch (IOException e) { |
| // do nothing |
| } |
| } |
| } |
| } |
| |
| public String getAboutText() { |
| return bundleGroup.getProperty(IBundleGroupConstants.ABOUT_TEXT); |
| } |
| } |