I created a model with EMF that represents device settings and the RCP GUI. In the GUI, I have a list for choosing different devices like model (Master).
The model has a list of objects of a small class, which should be displayed in the table (Detail).
The tables themselves must be edited, so to change the settings I have a small part of the GUI with checkboxes, etc. Here the tableitem is a wizard, and all the fields shown in the GUI are details.
Observed for device list:
IObservableValue selection = ViewersObservables.observeSingleSelection(availableDevicesList);
Table:
IObservableList list = EMFObservables.observeDetailList(Realm.getDefault(), selection,DevicePackage.Literals.LIST); TableViewer tableViewer = new TableViewer(parent, SWT.SINGLE | SWT.FULL_SELECTION); tableViewer.setInput(list); IObservableValue tableSelection = ViewersObservables.observeSingleSelection(tableViewer);
Editing:
Spinner field1 = new Spinner(parent, SWT.BORDER); dbc.bindValue(SWTObservables.observeSelection(field1), EMFObservables.observeDetailValue(Realm.getDefault(), tableSelection, DevicePackage.Literals.Value1));
When you change the device selection, tables are replaced. But tableSelection has a problem with this. Sometimes it still contains a tableitem value from another device, and sometimes it just contains null. I also have a button that turns on / off according to the check state of all fields. When tableSelection puts null in these fields, the check does not work, and the button is disabled until a record in the table is selected.
I tried to manually set the selection to empty using the listener in the list and:
tableViewer.setSelection(StructuredSelection.EMPTY, true);
but that does not do all the work. At least all the "old" values are replaced, but the problem with zero is still encountered.
All I need to do is set tableSelection to an empty state, as after starting the application, when the table element has not yet been selected.