plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/mi/MnemonicEditingSupport.java

   1 package net.mograsim.plugin.tables.mi;
   2
   3 import org.eclipse.jface.viewers.CellEditor;
   4 import org.eclipse.jface.viewers.ComboBoxCellEditor;
   5 import org.eclipse.jface.viewers.EditingSupport;
   6 import org.eclipse.jface.viewers.TableViewer;
   7 import org.eclipse.swt.SWT;
   8
   9 import net.mograsim.machine.mi.MicroInstruction;
  10 import net.mograsim.machine.mi.MicroInstructionDefinition;
  11 import net.mograsim.machine.mi.parameters.MicroInstructionParameter;
  12 import net.mograsim.machine.mi.parameters.Mnemonic;
  13 import net.mograsim.machine.mi.parameters.MnemonicFamily;
  14
  15 public class MnemonicEditingSupport extends EditingSupport
  16 {
  17         private final ComboBoxCellEditor editor;
  18         private final MnemonicFamily family;
  19         private final int index;
  20         private InstructionTableContentProvider provider;
  21
  22         public MnemonicEditingSupport(TableViewer viewer, MicroInstructionDefinition definition, int index,
  23                         InstructionTableContentProvider provider)
  24         {
  25                 super(viewer);
  26                 family = (MnemonicFamily) definition.getParameterClassifications()[index];
  27                 editor = new ComboBoxCellEditor(viewer.getTable(), family.getStringValues(), SWT.READ_ONLY);
  28                 editor.setActivationStyle(
  29                                 ComboBoxCellEditor.DROP_DOWN_ON_TRAVERSE_ACTIVATION | ComboBoxCellEditor.DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION
  30                                                 | ComboBoxCellEditor.DROP_DOWN_ON_MOUSE_ACTIVATION | ComboBoxCellEditor.DROP_DOWN_ON_KEY_ACTIVATION);
  31                 this.index = index;
  32                 this.provider = provider;
  33         }
  34
  35         @Override
  36         protected boolean canEdit(Object element)
  37         {
  38                 return true;
  39         }
  40
  41         @Override
  42         protected CellEditor getCellEditor(Object element)
  43         {
  44                 return editor;
  45         }
  46
  47         @Override
  48         protected Object getValue(Object element)
  49         {
  50                 InstructionTableRow row = ((InstructionTableRow) element);
  51                 return ((Mnemonic) row.data.getCell(row.address).getParameter(index)).ordinal();
  52         }
  53
  54         @Override
  55         protected void setValue(Object element, Object value)
  56         {
  57                 InstructionTableRow row = ((InstructionTableRow) element);
  58                 MicroInstructionParameter[] params = row.data.getCell(row.address).getParameters();
  59                 Mnemonic newParam = family.get((Integer) value);
  60                 if (newParam.equals(params[index]))
  61                         return;
  62                 params[index] = newParam;
  63                 row.data.setCell(row.address, MicroInstruction.create(params));
  64                 provider.update(row.address);
  65         }
  66
  67 }