/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.openformula.ui.table;
import java.awt.Color;
import java.awt.Component;
import javax.swing.DefaultListCellRenderer;
import javax.swing.JList;
import javax.swing.JTable;
import javax.swing.ListCellRenderer;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import org.pentaho.reporting.libraries.base.util.StringUtils;
import org.pentaho.reporting.libraries.formula.util.FormulaUtil;
public class FormulaFragmentCellRenderer implements TableCellRenderer, ListCellRenderer
{
private DefaultTableCellRenderer tableCellRenderer;
private DefaultListCellRenderer listCellRenderer;
public FormulaFragmentCellRenderer()
{
tableCellRenderer = new DefaultTableCellRenderer();
tableCellRenderer.putClientProperty("html.disable", Boolean.TRUE); // NON-NLS
listCellRenderer = new DefaultListCellRenderer();
listCellRenderer.putClientProperty("html.disable", Boolean.TRUE); // NON-NLS
}
public Component getTableCellRendererComponent(final JTable table,
final Object value,
final boolean isSelected,
final boolean hasFocus,
final int row,
final int column)
{
if (value == null)
{
return tableCellRenderer.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
}
String sValue = String.valueOf(value);
if (StringUtils.isEmpty(sValue))
{
return tableCellRenderer.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
}
else if (sValue.startsWith("="))
{
// User does not need to prepend equal sign as it gets prepended automatically
// Strip off the equal sign and update expression editor and table cell.
sValue = sValue.substring(1);
}
final Component retval = tableCellRenderer.getTableCellRendererComponent
(table, FormulaUtil.createCellUITextFromFormula(sValue), isSelected, hasFocus, row, column);
if (FormulaUtil.isValidFormulaFragment(sValue) == false)
{
retval.setBackground(Color.RED);
}
else if (retval.getBackground() == Color.RED)
{
retval.setBackground(table.getBackground());
}
return retval;
}
/**
* Return a component that has been configured to display the specified
* value. That component's <code>paint</code> method is then called to
* "render" the cell. If it is necessary to compute the dimensions
* of a list because the list cells do not have a fixed size, this method
* is called to generate a component on which <code>getPreferredSize</code>
* can be invoked.
*
* @param list The JList we're painting.
* @param value The value returned by list.getModel().getElementAt(index).
* @param index The cells index.
* @param isSelected True if the specified cell was selected.
* @param cellHasFocus True if the specified cell has the focus.
* @return A component whose paint() method will render the specified value.
* @see javax.swing.JList
* @see javax.swing.ListSelectionModel
* @see javax.swing.ListModel
*/
public Component getListCellRendererComponent(final JList list,
final Object value,
final int index,
final boolean isSelected,
final boolean cellHasFocus)
{
if (value == null)
{
return listCellRenderer.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
}
final String sValue = String.valueOf(value);
if (StringUtils.isEmpty(sValue))
{
return listCellRenderer.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);
}
final Component retval = listCellRenderer.getListCellRendererComponent
(list, FormulaUtil.createCellUITextFromFormula(sValue), index, isSelected, cellHasFocus);
if (FormulaUtil.isValidFormulaFragment(sValue) == false)
{
retval.setBackground(Color.RED);
}
else
{
retval.setBackground(list.getBackground());
}
return retval;
}
}