/*
 *  JFLAP - Formal Languages and Automata Package
 * 
 * 
 *  Susan H. Rodger
 *  Computer Science Department
 *  Duke University
 *  August 27, 2009

 *  Copyright (c) 2002-2009
 *  All rights reserved.

 *  JFLAP is open source software. Please see the LICENSE for terms.
 *
 */





package gui.grammar.parse;

import grammar.parse.LRParseTable;
import gui.LeftTable;
import java.awt.Color;
import javax.swing.*;
import javax.swing.table.*;

/**
 * This holds a LR parse table.
 * 
 * @author Thomas Finley
 */

public class LRParseTablePane extends LeftTable {
	/**
	 * Instantiates a new parse table pane for a parse table.
	 * 
	 * @param table
	 *            the table pane's parse table
	 */
	public LRParseTablePane(LRParseTable table) {
		super(table);
		this.table = table;
		setCellSelectionEnabled(true);
		setDefaultRenderer(Object.class, new LRParseTablePane.CellRenderer());
		ToolTipManager.sharedInstance().registerComponent(this);
	}

	/**
	 * Highlights a particular cell. Overridden to make sure that the
	 * highlighted cells use the same special rendering components this table
	 * uses for other entries.
	 * 
	 * @param row
	 *            the row index of the cell to highlight
	 * @param column
	 *            the column index of the cell to highlight
	 */
	public void highlight(int row, int column) {
		highlight(row, column, THRG);
	}

	/**
	 * Retrieves the parse table in this pane.
	 * 
	 * @return the parse table in this pane
	 */
	public LRParseTable getParseTable() {
		return table;
	}

	/**
	 * Since there may be ambiguity in the LR parse table, each description for
	 * each entry appears on a separate line, so the tool tips must have
	 * seperate lines.
	 * 
	 * @return the tool tip creation
	 */
	public JToolTip createToolTip() {
		return new gui.JMultiLineToolTip();
	}

	/**
	 * This extends the concept of the cell renderer.
	 */
	class CellRenderer extends DefaultTableCellRenderer {
		public java.awt.Component getTableCellRendererComponent(JTable aTable,
				Object value, boolean isSelected, boolean hasFocus, int row,
				int column) {
			JComponent c = (JComponent) super.getTableCellRendererComponent(
					aTable, value, isSelected, hasFocus, row, column);
			c.setToolTipText(table.getContentDescription(row, column));
			return c;
		}

	}

	/** The built in renderer. */
	private TableHighlighterRendererGenerator THRG = new TableHighlighterRendererGenerator() {
		public TableCellRenderer getRenderer(int row, int column) {
			if (renderer == null) {
				renderer = new CellRenderer();
				renderer.setBackground(new Color(255, 150, 150));
			}
			return renderer;
		}

		private DefaultTableCellRenderer renderer = null;
	};

	/** The parse table for this pane. */
	private LRParseTable table;
}