GoogleCodeRepositoryBrowser.java

package hudson.plugins.googlecode;

import hudson.Extension;
import hudson.model.Descriptor;
import hudson.scm.EditType;
import hudson.scm.RepositoryBrowser;
import hudson.scm.SubversionChangeLogSet.LogEntry;
import hudson.scm.SubversionChangeLogSet.Path;
import hudson.scm.SubversionRepositoryBrowser;

import org.kohsuke.stapler.DataBoundConstructor;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;

/**
 * {@link SubversionRepositoryBrowser} that produces Google Code links.
 * 
 * @author Kohsuke Kawaguchi
 * @author Erik Ramfelt
 */
public class GoogleCodeRepositoryBrowser extends SubversionRepositoryBrowser {

    private static final long serialVersionUID = 1L;

    private transient GoogleCodeProjectProperty.PropertyRetriever propertyRetriever;

    @DataBoundConstructor
    public GoogleCodeRepositoryBrowser() {
        this(new GoogleCodeProjectProperty.PropertyRetrieverImpl());
    }
    
    public GoogleCodeRepositoryBrowser(GoogleCodeProjectProperty.PropertyRetriever retriever) {
        propertyRetriever = retriever;
    }

    /**
     * Gets a URL for the {@link GoogleCodeProjectProperty#googlecodeWebsite} value
     * configured for the current project.
     */
    private URL getGoogleCodeWebURL(LogEntry cs) throws MalformedURLException {
        if (propertyRetriever == null) {
            propertyRetriever = new GoogleCodeProjectProperty.PropertyRetrieverImpl();
        }
        GoogleCodeProjectProperty property = propertyRetriever.getProperty(cs);
        if ((property == null) || (property.googlecodeWebsite == null))
            return null;
        else
            return new URL(property.googlecodeWebsite);
    }

    @Override
    public URL getDiffLink(Path path) throws IOException {
        if(path.getEditType()!= EditType.EDIT)
            return null;    // no diff if this is not an edit change
        URL baseUrl = getGoogleCodeWebURL(path.getLogEntry());
        int revision = path.getLogEntry().getRevision();
        return new URL(baseUrl, "source/diff?r=" + revision + "&format=side&path=" + path.getValue());
    }

    @Override
    public URL getFileLink(Path path) throws IOException {
        URL baseUrl = getGoogleCodeWebURL(path.getLogEntry());
        int revision = path.getLogEntry().getRevision();
        return baseUrl == null ? null : new URL(baseUrl, "source/browse" + path.getValue() + "?r=" + revision + "#1");
    }

    @Override
    public URL getChangeSetLink(LogEntry changeSet) throws IOException {
        URL baseUrl = getGoogleCodeWebURL(changeSet);
        return baseUrl == null ? null : new URL(baseUrl, "source/detail?r=" + changeSet.getRevision());
    }

    @Extension
    public static final class DescriptorImpl extends Descriptor<RepositoryBrowser<?>> {
        public DescriptorImpl() {
            super(GoogleCodeRepositoryBrowser.class);
        }

        @Override
        public String getDisplayName() {
            return "Google Code";
        }
    }
}