A Renderer class used to set the Default Table Cell Renderer for String and Double object types.

src/main/java/com/romraider/logger/ecu/ui/swing/tools/tablemodels/renderers/LtvCellRenderer.java

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+/*
+ * RomRaider Open-Source Tuning, Logging and Reflashing
+ * Copyright (C) 2006-2013 RomRaider.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+package com.romraider.logger.ecu.ui.swing.tools.tablemodels.renderers;
+
+import java.awt.Color;
+import java.awt.Component;
+import java.text.DecimalFormat;
+
+import javax.swing.JLabel;
+import javax.swing.JTable;
+import javax.swing.table.DefaultTableCellRenderer;
+
+/**
+ * This class is used to set the Default Table Cell Renderer for String and
+ * Double object types.  The cell will be centred and text coloured according
+ * to its value above and below zero. 
+ */
+
+public class LtvCellRenderer extends DefaultTableCellRenderer {
+    private static final long serialVersionUID = -171010635742251272L;
+    private static final DecimalFormat numberFormat =
+            new DecimalFormat("0.00;-0.00");
+
+    @Override
+    public Component getTableCellRendererComponent(
+            JTable table, Object value, boolean isSelected, boolean hasFocus,
+            int row, int column) {
+
+        final Component c = super.getTableCellRendererComponent(
+                table, value, isSelected, hasFocus, row, column);
+
+        if (c instanceof JLabel) {
+            final JLabel cell = (JLabel) c;
+            cell.setHorizontalAlignment(JLabel.CENTER);
+            cell.setForeground(Color.BLACK);
+    
+            if (column > 0) {
+                if (value instanceof Double) {
+                    cell.setText(numberFormat.format(value));
+                    setColour(cell, ((Double) value).doubleValue());
+    
+                }
+                if (value instanceof String) {
+                    final String data = (String) value;
+                    if (data.contains("%")) {
+                        double num = Double.parseDouble(data.split(" ")[0]);
+                        setColour(cell, num);
+                    }
+                }
+            }
+        }
+        return c;
+    }
+
+    private final void setColour(JLabel cell, double value) {
+        if (value < 0) {
+            cell.setForeground(Color.RED);
+        }
+        else if (value > 0) {
+            cell.setForeground(Color.BLUE);
+        }
+    }
+}