/**
* Update combo box of this view.
*
* @param model_changed set true if the model was changed.
*/
private void update(final boolean model_changed) {
if (model == null) { // Clear/disable GUI
items.setItems(new String[] {Messages.SampleView_NoPlot});
items.select(0);
items.setEnabled(false);
sample_table.setInput(null);
return;
}
// Show PV names.
// Also build array for following index-based check of selected item
final List<ModelItem> model_items = new ArrayList<>();
final List<String> names_list = new ArrayList<>();
names_list.add(Messages.SampleView_SelectItem);
for (ModelItem item : model.getItems()) {
model_items.add(item);
names_list.add(item.getName());
}
final String[] names = names_list.toArray(new String[names_list.size()]);
if (!model_changed && items.getSelectionIndex() > 0) {
// Is the previously selected item still valid?
if (sample_table.getInput() instanceof ModelItem) {
final ModelItem selected_item = (ModelItem) sample_table.getInput();
if (model_items.indexOf(selected_item) != -1) { // Show same PV name again in combo box
items.setItems(names);
items.select(model_items.indexOf(selected_item) + 1);
items.setEnabled(true);
// Update sample table size. Not locking for size()
sample_table.setItemCount(selected_item.getSamples().size());
sample_table.refresh();
return;
}
}
}
// Previously selected item no longer valid.
// Show new items, clear rest
items.setItems(names);
items.select(0);
items.setEnabled(true);
sample_table.setInput(null);
}
/**
* Run the 'add PV' dialog with optional defaults
*
* @param name Suggested PV name, for example from drag-n-drop
* @param archive Archive data source for the new PV
* @return <code>true</code> if PV name was added, <code>false</code> if canceled by user
*/
public boolean runWithSuggestedName(final String name, final ArchiveDataSource archive) {
// Prompt for PV name
final Set<String> existing_names = new HashSet<>();
for (ModelItem item : model.getItems()) existing_names.add(item.getName());
final List<AxisConfig> axes = new ArrayList<>();
final List<String> axes_names = new ArrayList<>();
for (AxisConfig axis : model.getAxes()) {
axes.add(axis);
axes_names.add(axis.getName());
}
final AddPVDialog dlg = new AddPVDialog(shell, existing_names, axes_names, formula);
dlg.setName(name);
if (dlg.open() != Window.OK) return false;
// Did user select axis?
final AxisConfig axis;
if (dlg.getAxisIndex() >= 0) axis = axes.get(dlg.getAxisIndex());
else // Use first empty axis, or create a new one
axis =
model
.getEmptyAxis()
.orElseGet(() -> new AddAxisCommand(operations_manager, model).getAxis());
// Create item
if (formula) {
final Optional<AddModelItemCommand> command =
AddModelItemCommand.forFormula(shell, operations_manager, model, dlg.getName(), axis);
if (!command.isPresent()) return false;
// Open configuration dialog
final FormulaItem formula = (FormulaItem) command.get().getItem();
final EditFormulaDialog edit = new EditFormulaDialog(operations_manager, shell, formula);
edit.open();
} else
AddModelItemCommand.forPV(
shell, operations_manager, model, dlg.getName(), dlg.getScanPeriod(), axis, archive);
return true;
}