| [pde-dev] CheckboxCellEditor in TableTree |
Hi,
I am trying to use a couple of CheckboxCellEditors in my TableViewer. I have set them as cell editors and my CellModifier is returning a Boolean value for these columns. But the viewer fails to show a checkbox in the color on the table?? The TableViewer current shows a boolean value of "true" or "false". I want the column to show a checkbox instead. But I can't figure out how to make it work.
When I click in the checkbox column to edit the value, I get the following error in the console:
Unhandled exception caught in event loop.
Reason:
Failed to execute runnable (java.lang.ClassCastException: java.lang.Boolean)
*** Stack trace of contained exception ***
Reason:
java.lang.Boolean
When I run the debugger, I know that the debugger gets past the getValue of the CellModifier. As I follow the trace out of my getValue method, it goes to out of the box "TableViewerImpl.class", activateCellEditor method, where it fails when it tries the following line of code:
cellEditor.activate();
Can anyone tell me what I am doing wrong? The relevant sections of my source are below.
Thanks,
Bob
----------------------------------------------------------------------------
public class AttributesView extends ViewPart implements ISelectionListener {
.
.
.
public void createPartControl(Composite parent) {
//viewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
Table table = getTable(parent);
viewer = new TableViewer(table);
viewer.setContentProvider(new AttributesViewContentProvider());
viewer.setLabelProvider(new AttributesViewLabelProvider());
viewer.setSorter(new NameSorter());
viewer.setColumnProperties(new String[] {"col_image", "col_attr", "col_name", "col_type", "col_size", "col_req", "col_dyn", "col_state"});
getViewSite().getPage().addSelectionListener(this);
createFiltersAndSorters();
makeActions();
hookContextMenu();
//hookDoubleClickAction();
contributeToActionBars();
getViewSite().getPage().addSelectionListener(this);
viewer.setCellEditors(
new CellEditor[] {
null, // no editing in the image column
new TextCellEditor(table), // attribute name
new TextCellEditor(table), // attribute displayed name
new ComboBoxCellEditor(table, listStorageTypes),// attribute storage type
new TextCellEditor(table), // attribute storage size
new CheckboxCellEditor(table), // attribute required
new CheckboxCellEditor(table), // attribute dynamic
new TextCellEditor(table)}); // state
viewer.setCellModifier(new ICellModifier() {
public boolean canModify(Object element, String property) {
MTIAttribute a = (MTIAttribute) element;
if (property.equals("col_attr"))
return (! a.getState().equals(ModelConstants.SERVER));
else if (property.equals("col_name"))
return true;
else if (property.equals("col_type"))
return (! a.getState().equals(ModelConstants.SERVER));
else if (property.equals("col_size"))
return a.getStorageType().equals("string");
else if (property.equals("col_req"))
return true;
else if (property.equals("col_dyn"))
return true;
else if (property.equals("col_state"))
return false;
else
return false;
}
public Object getValue(Object element, String property) {
MTIAttribute a = (MTIAttribute) element;
System.out.println("AttributesView:getValue()");
if (property.equals("col_attr"))
return a.getAttribute();
else if (property.equals("col_name"))
return a.getDisplayedName();
else if (property.equals("col_type")) {
int i = Arrays.asList(listStorageTypes).indexOf(a.getStorageType());
return i == -1 ? null : new Integer(i);
}
else if (property.equals("col_size"))
return (new Integer(a.getStorageSize())).toString();
else if (property.equals("col_req"))
return (new Boolean(a.getRequired()));
else if (property.equals("col_dyn"))
return (new Boolean(a.getDynamic()));
else if (property.equals("col_state"))
return a.getState();
else
return null;
}
public void modify(Object element, String property, Object value) {
if (element instanceof Item)
element = ((Item) element).getData();
MTIAttribute a = (MTIAttribute) element;
if (property.equals("col_attr"))
a.setAttribute((String) value);
else if (property.equals("col_name"))
a.setDisplayedName((String) value);
else if (property.equals("col_type"))
{
if (value instanceof Integer)
{
int i = ((Integer) value).intValue();
a.setStorageType(listStorageTypes[i]);
}
}
else if (property.equals("col_size"))
a.setStorageSize((Integer.valueOf((String)value)).intValue());
else if (property.equals("col_req"))
a.setRequired(Boolean.getBoolean((String) value));
else if (property.equals("col_dyn"))
a.setDynamic(Boolean.getBoolean((String) value));
else if (property.equals("col_state"))
a.setState((String) value);
System.out.println("AttributesView: modify");
MTIClassInfo info = ((AttributesViewContentProvider)viewer.getContentProvider()).getMTIClassInfoForViewer();
model.modifyAttribute(info, a);
}
});
}