/**
* Register and perform the command
*
* @param operations_manager OperationsManager where command will be reg'ed
* @param item Model item to configure
* @param new_index New value
*/
public ChangeWaveformIndexCommand(
final OperationsManager operations_manager, final ModelItem item, final int new_index) {
this.item = item;
this.old_index = item.getWaveformIndex();
this.new_index = new_index;
operations_manager.addCommand(this);
redo();
}
/**
* 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// Previously selected item no longer valid.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;
}
/**
* Initialize
*
* @param item Item from which to get samples /** @param start Start time /** @param end End time
*/
public ModelSampleIterator(final ModelItem item, final Instant start, final Instant end) {
this.samples = item.getSamples();
this.end = end;
samples.getLock().lock();
try {
// Anything?
if (samples.size() <= 0) index = -1;
// All data after start time?
else if (samples.get(0).getPosition().compareTo(start) >= 0) index = 0;
else { // There is data before the start time. Find sample just before start time.
index = findSampleLessOrEqual(start);
}
// Is first sample already after end time?
if (index >= 0) {
final PlotSample sample = samples.get(index);
value = sample.getVType();
if (sample.getPosition().compareTo(end) > 0) index = -1;
}
} finally {
samples.getLock().unlock();
}
}
/** {@inheritDoc} */
@Override
protected void performExport(final IProgressMonitor monitor, final PrintStream out)
throws Exception {
final DateFormat date_format = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss.SSS");
int count = 0;
for (ModelItem item : model.getItems()) {
// Item header
if (count > 0) out.println();
printItemInfo(out, item);
// Get data
monitor.subTask(NLS.bind("Fetching data for {0}", item.getName()));
final ValueIterator values = createValueIterator(item);
// Dump all values
MatlabQualityHelper qualities = new MatlabQualityHelper();
long line_count = 0;
out.println("clear t;");
out.println("clear v;");
out.println("clear q;");
while (values.hasNext() && !monitor.isCanceled()) {
final VType value = values.next();
++line_count;
// t(1)='2010/03/15 13:30:10.123';
out.println(
"t{"
+ line_count
+ "}='"
+ date_format.format(VTypeHelper.getTimestamp(value).toDate())
+ "';");
// v(1)=4.125;
final double num = VTypeHelper.toDouble(value);
if (Double.isNaN(num) || Double.isInfinite(num)) out.println("v(" + line_count + ")=NaN;");
else out.println("v(" + line_count + ")=" + num + ";");
// q(1)=0;
out.println(
"q("
+ line_count
+ ")="
+ qualities.getQualityCode(
VTypeHelper.getSeverity(value), VTypeHelper.getMessage(value))
+ ";");
if (line_count % PROGRESS_UPDATE_LINES == 0)
monitor.subTask(NLS.bind("{0}: Wrote {1} samples", item.getName(), line_count));
}
out.println(comment + "Convert time stamps into 'date numbers'");
out.println("tn=datenum(t, 'yyyy/mm/dd HH:MM:SS.FFF');");
out.println(comment + "Prepare patched data because");
out.println(comment + "timeseries() cannot handle duplicate time stamps");
out.println("[xx, idx]=unique(tn, 'last');");
out.println("pt=tn(idx);");
out.println("pv=v(idx);");
out.println("pq=q(idx);");
out.println("clear xx idx");
out.println(comment + "Convert into time series and plot");
// Patch "_" in name because Matlab plot will interprete it as LaTeX sub-script
final String channel_name = item.getDisplayName().replace("_", "\\_");
out.println(
"channel"
+ count
+ "=timeseries(pv', pt', pq', 'IsDatenum', true, 'Name', '"
+ channel_name
+ "');");
out.print("channel" + count + ".QualityInfo.Code=[");
for (int q = 0; q < qualities.getNumCodes(); ++q) out.print(" " + q);
out.println(" ];");
out.print("channel" + count + ".QualityInfo.Description={");
for (int q = 0; q < qualities.getNumCodes(); ++q)
out.print(" '" + qualities.getQuality(q) + "'");
out.println(" };");
out.println();
++count;
}
out.println(comment + "Example for plotting the data");
for (int i = 0; i < count; ++i) {
out.println("subplot(1, " + count + ", " + (i + 1) + ");");
out.println("plot(channel" + i + ");");
}
}
/** {@inheritDoc} */
@Override
public void undo() {
item.setWaveformIndex(old_index);
}
/** {@inheritDoc} */
@Override
public void redo() {
item.setWaveformIndex(new_index);
}
