bundles/org.simantics.spreadsheet.ui/src/org/simantics/spreadsheet/ui/RowHeaderRenderer.java

   1 package org.simantics.spreadsheet.ui;\r
   2 \r
   3 import java.awt.Color;\r
   4 import java.awt.Component;\r
   5 import java.awt.Dimension;\r
   6 import java.util.HashMap;\r
   7 import java.util.Map;\r
   8 \r
   9 import javax.swing.JLabel;\r
  10 import javax.swing.JList;\r
  11 import javax.swing.JTable;\r
  12 import javax.swing.ListCellRenderer;\r
  13 import javax.swing.SwingConstants;\r
  14 import javax.swing.table.JTableHeader;\r
  15 \r
  16 public class RowHeaderRenderer implements ListCellRenderer {\r
  17 \r
  18         private static Color ROW_HEADER_BACKGROUND = new Color(240, 240, 240);\r
  19         \r
  20         final Map<Integer, JLabel> labels = new HashMap<Integer, JLabel>();\r
  21         final JTable table;\r
  22         final JTableHeader header;\r
  23 \r
  24         RowHeaderRenderer(JTable table) {\r
  25                 header = table.getTableHeader();\r
  26                 this.table = table;\r
  27         }\r
  28 \r
  29         private JLabel newLabel() {\r
  30                 JLabel label = new JLabel();\r
  31                 label.setOpaque(true);\r
  32                 label.setBorder(TableBorder.BORDER);\r
  33                 label.setHorizontalAlignment(SwingConstants.CENTER);\r
  34                 label.setForeground(header.getForeground());\r
  35                 label.setBackground(ROW_HEADER_BACKGROUND);\r
  36                 label.setFont(header.getFont());\r
  37                 return label;\r
  38         }\r
  39 \r
  40         public Component getListCellRendererComponent(JList list, Object value,\r
  41                         int index, boolean isSelected, boolean cellHasFocus) {\r
  42 \r
  43                 JLabel label = labels.get(index);\r
  44                 if(label == null) {\r
  45                         label = newLabel();\r
  46                         labels.put(index, label);\r
  47                 }\r
  48 \r
  49                 label.setText((value == null) ? "" : value.toString());\r
  50 \r
  51                 int height = table.getRowHeight(index);\r
  52                 label.setPreferredSize(new Dimension(label.getWidth(), height));\r
  53                 \r
  54                 return label;\r
  55 \r
  56         }\r
  57 }\r