StatTable.java

package com.kartoflane.superluminal2.ui;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.ScrollBar;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;

import com.kartoflane.superluminal2.components.Tuple;

public class StatTable extends Table {
	private TableColumn colStat;
	private TableColumn colValue;

	private Map<String, TableItem> statMap = new HashMap<String, TableItem>();

	public StatTable(Composite parent) {
		super(parent, SWT.BORDER | SWT.FULL_SELECTION | SWT.HIDE_SELECTION);
		setHeaderVisible(true);
		setLinesVisible(true);

		// remove the horizontal bar so that it doesn't flicker when the table is resized
		getHorizontalBar().dispose();

		colStat = new TableColumn(this, SWT.LEFT);
		colStat.setWidth(100);
		colStat.setText("Stat");
		colStat.setMoveable(false);
		colStat.setResizable(false);

		colValue = new TableColumn(this, SWT.RIGHT);
		colValue.setWidth(100);
		colValue.setText("Value");
		colValue.setMoveable(false);
		colValue.setResizable(false);

		addListener(SWT.Resize, new Listener() {
			public void handleEvent(Event e) {
				updateColumnWidth();
			}
		});
	}

	@Override
	protected void checkSubclass() {
		// Need to override this in order to allow subclassing
	}

	public void addEntry(String name, String value) {
		if (name == null || value == null)
			throw new IllegalArgumentException("Argument must not be null.");
		TableItem tbtm = null;
		if (statMap.containsKey(name))
			tbtm = statMap.get(name);
		else
			tbtm = new TableItem(this, SWT.NONE);
		tbtm.setText(0, name);
		tbtm.setText(1, value);

		statMap.put(name, tbtm);
	}

	public void addEntries(Tuple<String, String>[] stats) {
		if (stats == null)
			throw new IllegalArgumentException("Argument must not be null.");
		for (Tuple<String, String> entry : stats)
			addEntry(entry.getKey(), entry.getValue());
	}

	public void removeEntry(String name) {
		if (name == null)
			throw new IllegalArgumentException("Argument must not be null.");
		TableItem tbtm = statMap.get(name);
		if (tbtm != null)
			tbtm.dispose();
		statMap.remove(name);
	}

	public void clear() {
		String[] keys = statMap.keySet().toArray(new String[0]);
		for (String key : keys)
			removeEntry(key);
		layout();
		statMap.clear();
	}

	public void updateColumnWidth() {
		int hw = getSize().x;
		ScrollBar sb = getVerticalBar();
		if (sb != null && sb.isVisible())
			hw -= sb.getSize().x;
		hw /= 2;
		hw -= getBorderWidth();

		colStat.setWidth(hw);
		colValue.setWidth(hw);

		layout();
	}
}