BrowserController.java

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2009 Jonas Fonseca <fonseca@diku.dk>
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
 * http://www.netbeans.org/cddl-gplv2.html. See the License for the
 * specific language governing permissions and limitations under the
 * License.  When distributing the software, include this License Header
 * Notice in each file.
 *
 * This particular file is subject to the "Classpath" exception as provided
 * by Sun in the GPL Version 2 section of the License file that
 * accompanied this code. If applicable, add the following below the
 * License Header, with the fields enclosed by brackets [] replaced by
 * your own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * Contributor(s):
 *
 * If you wish your version of this file to be governed by only the CDDL
 * or only the GPL Version 2, indicate your decision by adding
 * "[Contributor] elects to include this software in this distribution
 * under the [CDDL or GPL Version 2] license." If you do not indicate a
 * single choice of license, a recipient has the option to distribute
 * your version of this file under either the CDDL, the GPL Version 2 or
 * to extend the choice of license to its licensees as provided above.
 * However, if you add GPL Version 2 code and therefore, elected the GPL
 * Version 2 license, then the option applies only if the new code is
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package org.nbgit.ui.browser;

import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import javax.swing.SwingUtilities;
import org.openide.util.NbBundle;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.revplot.PlotWalk;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevObject;
import org.eclipse.jgit.revwalk.RevSort;

/**
 * Control behavior of a repository browser.
 */
public class BrowserController implements PropertyChangeListener {

    private final static DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    private final BrowserModel model;

    public BrowserController(BrowserTopComponent browser, BrowserModel model) {
        this.model = model;
        browser.addPropertyChangeListener(this);
    }

    public void show() {
        SwingUtilities.invokeLater(new Runnable() {

            public void run() {
                model.getCommitList().clear();
                PlotWalk walk = null;
                try {
                    walk = new PlotWalk(model.getRepository());
                    walk.sort(RevSort.BOUNDARY, true);
                    if (model.hasPaths()) {
                        walk.setTreeFilter(model.createPathFilter());
                    }
                    for (Ref ref : model.getReferences())
                        walk.markStart(walk.parseCommit(ref.getObjectId()));
                    model.getCommitList().source(walk);
                    model.getCommitList().fillTo(Integer.MAX_VALUE);
                } catch (Throwable error) {
                    model.setContent(error.getMessage());
                } finally {
                    if (walk != null) {
                        walk.dispose();
                    }
                }
            }
        });
    }

    public void propertyChange(PropertyChangeEvent event) {
        switch (BrowserProperty.valueOfOrUnknown(event.getPropertyName())) {
        case COMMIT_INDEX:
            int commitIndex = Integer.valueOf(event.getNewValue().toString());
            RevObject object = model.getCommitList().get(commitIndex);
            model.setContentId(object.name());
            if (object instanceof RevCommit)
                model.setContent(toString((RevCommit) object));
            break;
        }
    }

    private String toString(RevCommit commit) {
        StringBuilder str = new StringBuilder();
        str.append(formatIdent("Author", commit.getAuthorIdent())). // NOI18N
                append("\n"); // NOI18N
        str.append(formatIdent("Committer", commit.getCommitterIdent())). // NOI18N
                append("\n"); // NOI18N
        for (RevCommit parent : commit.getParents()) {
            str.append(NbBundle.getMessage(BrowserController.class, "Parent", // NOI18N
                    parent.name(), parent.getShortMessage())).
                    append("\n"); // NOI18N
            }
        str.append("\n"); // NOI18N
        str.append(commit.getFullMessage());
        return str.toString();
    }

    private String formatIdent(String msgId, PersonIdent ident) {
        String str = ident.getName() + " <" + ident.getEmailAddress() + "> " + // NOI18N
                dateFormat.format(ident.getWhen()) + " " + // NOI18N
                ident.getTimeZone().getDisplayName();
        return NbBundle.getMessage(BrowserController.class, msgId, str);
    }
}