/*
    * Copyright (C) 2010, Robin Rosenberg <robin.rosenberg@dewire.com>
    * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
    * and other copyright owners as documented in the project's IP log.
    *
    * This program and the accompanying materials are made available
    * under the terms of the Eclipse Distribution License v1.0 which
    * accompanies this distribution, is reproduced below, and is
    * available at http://www.eclipse.org/org/documents/edl-v10.php
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or
   * without modification, are permitted provided that the following
   * conditions are met:
   *
   * - Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   *
   * - Redistributions in binary form must reproduce the above
   *   copyright notice, this list of conditions and the following
   *   disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   *
   * - Neither the name of the Eclipse Foundation, Inc. nor the
   *   names of its contributors may be used to endorse or promote
   *   products derived from this software without specific prior
   *   written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package org.eclipse.jgit.pgm;
  
  import java.awt.BorderLayout;
  import java.awt.FlowLayout;
  import java.awt.event.ActionEvent;
  import java.awt.event.ActionListener;
  import java.awt.event.WindowAdapter;
  import java.awt.event.WindowEvent;
  import java.io.File;
  
  import javax.swing.JButton;
  import javax.swing.JFrame;
  import javax.swing.JPanel;
  import javax.swing.JScrollPane;
  
  import org.eclipse.jgit.awtui.CommitGraphPane;
  import org.eclipse.jgit.lib.Constants;
  import org.eclipse.jgit.pgm.internal.CLIText;
  import org.eclipse.jgit.revplot.PlotWalk;
  import org.eclipse.jgit.revwalk.RevCommit;
  import org.eclipse.jgit.revwalk.RevSort;
  import org.eclipse.jgit.revwalk.RevWalk;
  
  @Command(usage = "usage_Glog")
  class Glog extends RevWalkTextBuiltin {
  	final JFrame frame;
  
  	final CommitGraphPane graphPane;
  
  	Glog() {
  		frame = new JFrame();
  		frame.addWindowListener(new WindowAdapter() {
  			@Override
  			public void windowClosing(WindowEvent e) {
  				frame.dispose();
  			}
  		});
  
  		graphPane = new CommitGraphPane();
  
  		final JScrollPane graphScroll = new JScrollPane(graphPane);
  
  		final JPanel buttons = new JPanel(new FlowLayout());
  		final JButton repaint = new JButton();
  		repaint.setText(CLIText.get().repaint);
  		repaint.addActionListener(new ActionListener() {
  			@Override
  			public void actionPerformed(ActionEvent e) {
  				graphPane.repaint();
  			}
  		});
  		buttons.add(repaint);
  
  		final JPanel world = new JPanel(new BorderLayout());
  		world.add(buttons, BorderLayout.SOUTH);
 		world.add(graphScroll, BorderLayout.CENTER);
 
 		frame.getContentPane().add(world);
 	}
 
 	/** {@inheritDoc} */
 	@Override
 	protected int walkLoop() throws Exception {
 		graphPane.getCommitList().source(walk);
 		graphPane.getCommitList().fillTo(Integer.MAX_VALUE);
 
 		frame.setTitle("[" + repoName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$
 		frame.pack();
 		frame.setVisible(true);
 		return graphPane.getCommitList().size();
 	}
 
 	/** {@inheritDoc} */
 	@Override
 	protected void show(RevCommit c) throws Exception {
 		throw new UnsupportedOperationException();
 	}
 
 	/** {@inheritDoc} */
 	@Override
 	protected RevWalk createWalk() {
 		if (objects)
 			throw die(CLIText.get().cannotUseObjectsWithGlog);
 		final PlotWalk w = new PlotWalk(db);
 		w.sort(RevSort.BOUNDARY, true);
 		return w;
 	}
 
 	private String repoName() {
 		final File gitDir = db.getDirectory();
 		if (gitDir == null)
 			return db.toString();
 		String n = gitDir.getName();
 		if (Constants.DOT_GIT.equals(n))
 			n = gitDir.getParentFile().getName();
 		return n;
 	}
 }