Palette.java

package com.drawbridge.utils;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JComponent;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.SwingUtilities;

import com.drawbridge.vl.BlockWrapper;

public class Palette extends JPanel
{
	private static final long	serialVersionUID	= -6150156093785960443L;
	public JTabbedPane			mTabbedPane;

	public Palette() {
		SwingUtilities.invokeLater(new Runnable() {

			@Override
			public void run()
			{
				setLayout(new BorderLayout());
				mTabbedPane = new JTabbedPane();
				mTabbedPane.setTabPlacement(JTabbedPane.TOP);
				mTabbedPane.setTabLayoutPolicy(JTabbedPane.WRAP_TAB_LAYOUT);
				mTabbedPane.setBackground(Color.white);
				add(mTabbedPane, BorderLayout.CENTER);
			}
		});
	}

	public void addPaletteTab(final String name, final JComponent[] components)
	{
		for (int i = 0; i < mTabbedPane.getTabCount(); i++)
		{
			if (mTabbedPane.getTitleAt(i).equals(name))
			{
				throw new RuntimeException("Could not add tab because of duplicate names!");
			}
		}

		JPanel mInternalJPanel = new JPanel();
		GridBagLayout gbLayout = new GridBagLayout();
		double[] colWeights = new double[components.length];
		for (int i = 0; i < colWeights.length; i++)
		{
			colWeights[i] = 1;
		}
		gbLayout.columnWeights = colWeights;
		mInternalJPanel.setLayout(gbLayout);
		for (int i = 0; i < components.length; i++)
		{
			BlockWrapper newComponent = new BlockWrapper(components[i], true);
			mInternalJPanel.add(newComponent, new GridBagConstraints());
		}
		JScrollPane mScrollPane = new JScrollPane(mInternalJPanel);
		mScrollPane.setBorder(null);
		mScrollPane.setOpaque(false);
		mScrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
		mScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_NEVER);

		mTabbedPane.addTab(name, null, mScrollPane, "No tips here please!");
		mTabbedPane.insertTab(name, null, mScrollPane, "", mTabbedPane.getTabCount());
		mTabbedPane.setOpaque(false);
	}


}