package gatchan.jedit.ancestor;



import org.gjt.sp.jedit.Buffer;

import org.gjt.sp.jedit.View;

import org.gjt.sp.jedit.MiscUtilities;

import org.gjt.sp.jedit.io.VFS;

import org.gjt.sp.jedit.io.VFSManager;



import javax.swing.*;

import java.awt.*;

import java.util.LinkedList;



/**

 * @author Matthieu Casanova

 * @version $Id: Server.java,v 1.33 2007/01/05 15:15:17 matthieu Exp $

 */

public class AncestorToolBar extends JToolBar

{

	private View view;

	private Component glue = Box.createGlue();

	private final LinkedList<String> list = new LinkedList<String>();



	public AncestorToolBar(View view)

	{

		this.view = view;

		add(glue);

		setFloatable(false);

	}



	void setBuffer(Buffer buffer)

	{

		String path = buffer.getPath();

		VFS _vfs = VFSManager.getVFSForPath(path);

		list.clear();

		while (true)

		{

			list.addFirst(path);

			String parent = _vfs.getParentOfPath(path);

			if (path == null || MiscUtilities.pathsEqual(path,parent))

				break;

			path = parent;

		}

		int count = getComponentCount() - 1;



		int nbTokens = list.size();

		if (nbTokens < count)

		{

			for (int i = 0;i<count - nbTokens;i++)

			{

				remove(0);

			}

		}

		else if (nbTokens > count)

		{

			for (int i = 0;i<nbTokens-count;i++)

			{

				add(new AncestorButton(), 0);

			}

		}

		int i = 0;

		int nb = list.size();

		for (String fileName : list)

		{

			AncestorButton button = (AncestorButton) getComponent(i);

			button.setAncestor(new Ancestor(view, fileName, _vfs.getFileName(fileName)));

			i++;

			button.setEnabled(nb != i);

		}

	}

}