/*******************************************************************************
 * Copyright (c) 2010 Stefan A. Tzeggai.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     Stefan A. Tzeggai - initial API and implementation
 ******************************************************************************/
package org.geopublishing.geopublisher.gui;

import java.awt.Component;

import javax.swing.JTable;
import javax.swing.table.TableCellRenderer;

public class TableRowHeightAdjustment {

	// Returns the preferred height of a row.
	// The result is equal to the tallest cell in the row.
	public int getPreferredRowHeight(JTable table, int rowIndex, int margin) {
		// Get the current default height for all rows
		int height = table.getRowHeight();

		// Determine highest cell in the row
		for (int c = 0; c < table.getColumnCount(); c++) {
			TableCellRenderer renderer = table.getCellRenderer(rowIndex, c);
			Component comp = table.prepareRenderer(renderer, rowIndex, c);
			int h = comp.getPreferredSize().height + 2 * margin;
			height = Math.min(400, Math.max(height, h)); // Changed by SK to not
			// resize bigger
			// than 400
		}
		return height;
	}

	// The height of each row is set to the preferred height of the
	// tallest cell in that row.
	public void packRows(JTable table, int margin) {
		packRows(table, 0, table.getRowCount(), margin);
	}

	// For each row >= start and < end, the height of a
	// row is set to the preferred height of the tallest cell
	// in that row.
	public void packRows(JTable table, int start, int end, int margin) {
		for (int r = 0; r < table.getRowCount(); r++) {
			// Get the preferred height
			int h = getPreferredRowHeight(table, r, margin);

			// Now set the row height using the preferred height
			if (table.getRowHeight(r) != h) {
				table.setRowHeight(r, h);
			}
		}
	}

}