net.mograsim.plugin.core/src/net/mograsim/plugin/tables/NumberCellEditingSupport.java

   1 package net.mograsim.plugin.tables;
   2
   3 import java.math.BigInteger;
   4
   5 import org.eclipse.jface.viewers.CellEditor;
   6 import org.eclipse.jface.viewers.EditingSupport;
   7 import org.eclipse.jface.viewers.TableViewer;
   8 import org.eclipse.jface.viewers.TextCellEditor;
   9
  10 import net.mograsim.plugin.asm.AsmNumberUtil;
  11
  12 public abstract class NumberCellEditingSupport extends EditingSupport
  13 {
  14         private final TableViewer viewer;
  15         private final CellEditor editor;
  16         private final DisplaySettings displaySettings;
  17
  18         public NumberCellEditingSupport(TableViewer viewer, DisplaySettings displaySettings)
  19         {
  20                 super(viewer);
  21                 this.viewer = viewer;
  22                 this.displaySettings = displaySettings;
  23                 editor = new TextCellEditor(viewer.getTable());
  24                 editor.setValidator(new NumberCellEditorValidator());
  25         }
  26
  27         @Override
  28         final protected boolean canEdit(Object element)
  29         {
  30                 return true;
  31         }
  32
  33         @Override
  34         final protected CellEditor getCellEditor(Object element)
  35         {
  36                 return editor;
  37         }
  38
  39         @Override
  40         final protected Object getValue(Object element)
  41         {
  42                 return AsmNumberUtil.toString(getAsBigInteger(element), displaySettings.getDataNumberType());
  43         }
  44
  45         @Override
  46         final protected void setValue(Object element, Object userInput)
  47         {
  48                 try
  49                 {
  50                         setAsBigInteger(element, AsmNumberUtil.valueOf((String) userInput));
  51                 }
  52                 catch (@SuppressWarnings("unused") NumberFormatException e)
  53                 {
  54                         setAsBigInteger(element, BigInteger.valueOf(0));
  55                 }
  56                 viewer.update(element, null);
  57         }
  58
  59         protected abstract void setAsBigInteger(Object element, BigInteger value);
  60
  61         protected abstract BigInteger getAsBigInteger(Object element);
  62 }