plugins/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         protected final CellEditor editor;
  16         private final DisplaySettings displaySettings;
  17
  18         public NumberCellEditingSupport(TableViewer viewer, DisplaySettings displaySettings, boolean allowX)
  19         {
  20                 super(viewer);
  21                 this.viewer = viewer;
  22                 this.displaySettings = displaySettings;
  23                 editor = new TextCellEditor(viewer.getTable());
  24                 editor.setValidator(new NumberCellEditorValidator(allowX));
  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                 BigInteger bi = getAsBigInteger(element);
  43                 return bi == null ? "X" : AsmNumberUtil.toString(bi, displaySettings.getDataNumberType(), getBitLength(element));
  44         }
  45
  46         @Override
  47         final protected void setValue(Object element, Object userInput)
  48         {
  49                 if (userInput.equals("X") || userInput.equals("x"))
  50                         setAsBigInteger(element, null);
  51                 else
  52                         try
  53                         {
  54                                 setAsBigInteger(element, AsmNumberUtil.valueOf((String) userInput));
  55                         }
  56                         catch (@SuppressWarnings("unused") NumberFormatException e)
  57                         {
  58                                 setAsBigInteger(element, BigInteger.valueOf(0));
  59                         }
  60                 viewer.update(element, null);
  61         }
  62
  63         /**
  64          * value==null means X, if this {@link NumberCellEditingSupport} was created with allowX==true
  65          */
  66         protected abstract void setAsBigInteger(Object element, BigInteger value);
  67
  68         /**
  69          * null means X, if this {@link NumberCellEditingSupport} was created with allowX==true
  70          */
  71         protected abstract BigInteger getAsBigInteger(Object element);
  72
  73         protected abstract int getBitLength(Object element);
  74 }