plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/mi/BooleanEditingSupport.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.logic.core.types.Bit;
  10 import net.mograsim.machine.mi.MicroInstruction;
  11 import net.mograsim.machine.mi.MicroInstructionDefinition;
  12 import net.mograsim.machine.mi.parameters.BooleanClassification;
  13 import net.mograsim.machine.mi.parameters.MicroInstructionParameter;
  14 import net.mograsim.machine.mi.parameters.Mnemonic;
  15
  16 public class BooleanEditingSupport extends EditingSupport
  17 {
  18         private final ComboBoxCellEditor editor;
  19         private final BooleanClassification boolClass;
  20         private final TableViewer viewer;
  21         private final int index;
  22
  23         public BooleanEditingSupport(TableViewer viewer, MicroInstructionDefinition definition, int index)
  24         {
  25                 super(viewer);
  26                 this.viewer = viewer;
  27                 this.boolClass = (BooleanClassification) definition.getParameterClassification(index);
  28                 editor = new ComboBoxCellEditor(viewer.getTable(), boolClass.getStringValues(), SWT.READ_ONLY);
  29                 editor.setActivationStyle(
  30                                 ComboBoxCellEditor.DROP_DOWN_ON_TRAVERSE_ACTIVATION | ComboBoxCellEditor.DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION
  31                                                 | ComboBoxCellEditor.DROP_DOWN_ON_MOUSE_ACTIVATION | ComboBoxCellEditor.DROP_DOWN_ON_KEY_ACTIVATION);
  32                 this.index = index;
  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                 // true is 0 because the true value comes first in the combo box
  52                 return row.data.getCell(row.address).getParameter(index).getValue().getMSBit(0).equals(Bit.ONE) ? 0 : 1;
  53         }
  54
  55         @Override
  56         protected void setValue(Object element, Object value)
  57         {
  58                 InstructionTableRow row = (InstructionTableRow) element;
  59                 MicroInstructionParameter[] params = row.data.getCell(row.address).getParameters();
  60                 // true is 0 because the true value comes first in the combo box
  61                 Mnemonic newParam = boolClass.get(value.equals(0) ? true : false);
  62                 if (newParam.equals(params[index]))
  63                         return;
  64                 params[index] = newParam;
  65                 row.data.setCell(row.address, MicroInstruction.create(params));
  66                 viewer.update(element, null);
  67         }
  68
  69 }