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 import net.mograsim.plugin.tables.memory.DisplaySettings;
  12
  13 public abstract class NumberCellEditingSupport extends EditingSupport
  14 {
  15         private final TableViewer viewer;
  16         private final CellEditor editor;
  17         private final DisplaySettings displaySettings;
  18
  19         public NumberCellEditingSupport(TableViewer viewer, DisplaySettings displaySettings)
  20         {
  21                 super(viewer);
  22                 this.viewer = viewer;
  23                 this.displaySettings = displaySettings;
  24                 editor = new TextCellEditor(viewer.getTable());
  25                 editor.setValidator(new NumberCellEditorValidator());
  26         }
  27
  28         @Override
  29         final protected boolean canEdit(Object element)
  30         {
  31                 return true;
  32         }
  33
  34         @Override
  35         final protected CellEditor getCellEditor(Object element)
  36         {
  37                 return editor;
  38         }
  39
  40         @Override
  41         final protected Object getValue(Object element)
  42         {
  43                 return AsmNumberUtil.toString(getAsBigInteger(element), displaySettings.getDataNumberType());
  44         }
  45
  46         @Override
  47         final protected void setValue(Object element, Object userInput)
  48         {
  49                 try
  50                 {
  51                         setAsBigInteger(element, AsmNumberUtil.valueOf((String) userInput));
  52                 }
  53                 catch (@SuppressWarnings("unused") NumberFormatException e)
  54                 {
  55                         setAsBigInteger(element, BigInteger.valueOf(0));
  56                 }
  57                 viewer.update(element, null);
  58         }
  59
  60         protected abstract void setAsBigInteger(Object element, BigInteger value);
  61
  62         protected abstract BigInteger getAsBigInteger(Object element);
  63 }