public void setPVFormula(String pvFormula) {
log.log(Level.FINE, "setPVFormula ({0})", pvFormula); // $NON-NLS-1$
// If we are already scanning that pv, do nothing
if (this.pvFormula != null && this.pvFormula.equals(pvFormula)) {
return;
}
this.pvFormula = pvFormula;
// The PV is different, so disconnect and reset the visuals
if (pv != null) {
pv.close();
pv = null;
}
valuePanel.changeValue(null, false);
changeValuePanel.reset();
metadataPanel.changeValue(null);
detailsPanel.changeValue(null, null);
viewerPanel.changeValue(null);
setLastError(null);
copyValueAction.setEnabled(false);
// If name is blank, update status to waiting and quit
if ((pvFormula == null) || pvFormula.trim().isEmpty()) {
setStatus(Messages.Probe_statusWaitingForPV);
pvFormula = null;
}
// Update displayed name, unless it's already current
if (!(Objects.equals(pvFomulaInputBar.getPVFormula(), pvFormula))) {
pvFomulaInputBar.setPVFormula(pvFormula);
}
if (pvFormula != null) {
setStatus(Messages.Probe_statusSearching);
DesiredRateReadWriteExpression<?, Object> expression = formula(pvFormula);
pv =
PVManager.readAndWrite(expression)
.timeout(ofMillis(5000), Messages.Probe_retryAfterTimeout)
.readListener(
new PVReaderListener<Object>() {
@Override
public void pvChanged(PVReaderEvent<Object> event) {
Object value = event.getPvReader().getValue();
setLastError(event.getPvReader().lastException());
viewerPanel.changeValue(value);
if (event.getPvReader().isConnected()) {
setStatus(Messages.Probe_statusConnected);
} else {
setStatus(Messages.Probe_statusSearching);
}
valuePanel.changeValue(value, event.getPvReader().isConnected());
metadataPanel.changeValue(value);
copyValueAction.setEnabled(export.canExport(value));
}
})
.readListener(changeValuePanel.getReaderListener())
.writeListener(changeValuePanel.getWriterListener())
.notifyOn(swtThread(this))
.asynchWriteAndMaxReadRate(ofHertz(25));
changeValuePanel.setPvWriter(pv);
// Show the PV name as the title
setPartName(pvFormula);
detailsPanel.changeValue(expression, pvFormula);
}
}
public void createPartControl(Composite parent) {
GridLayout gl_parent = new GridLayout(1, false);
gl_parent.verticalSpacing = 0;
gl_parent.marginWidth = 0;
gl_parent.marginHeight = 0;
parent.setLayout(gl_parent);
pvFomulaInputBar =
new PVFormulaInputBar(
parent, SWT.None, Activator.getDefault().getDialogSettings(), MEMENTO_PVFORMULA_LIST);
pvFomulaInputBar.addPropertyChangeListener(
new PropertyChangeListener() {
@Override
public void propertyChange(PropertyChangeEvent event) {
if ("pvFormula".equals(event.getPropertyName())) { // $NON-NLS-1$
setPVFormula((String) event.getNewValue());
}
}
});
GridData gd = new GridData();
gd.grabExcessHorizontalSpace = true;
gd.horizontalAlignment = SWT.FILL;
pvFomulaInputBar.setLayoutData(gd);
errorBar = new ErrorBar(parent, SWT.NONE);
errorBar.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
errorBar.setMarginRight(5);
errorBar.setMarginLeft(5);
errorBar.setMarginBottom(5);
ScrolledComposite mainScroll = new ScrolledComposite(parent, SWT.V_SCROLL);
mainScroll.setExpandHorizontal(true);
mainScroll.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
mainPanel =
new Composite(mainScroll, SWT.NONE) {
@Override
public void layout() {
// TODO Auto-generated method stub
super.layout();
mainPanel.setSize(mainPanel.computeSize(SWT.DEFAULT, SWT.DEFAULT));
}
};
GridLayout gl_mainPanel = new GridLayout();
mainPanel.setLayout(gl_mainPanel);
mainScroll.setContent(mainPanel);
viewerPanel = new ViewerPanel(mainPanel, SWT.BORDER);
viewerPanel.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false, 1, 1));
viewerPanel.setEnabled(false);
valuePanel = new ValuePanel(mainPanel, SWT.BORDER);
valuePanel.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false, 1, 1));
changeValuePanel = new ChangeValuePanel(mainPanel, SWT.BORDER);
changeValuePanel.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false, 1, 1));
metadataPanel = new MetadataPanel(mainPanel, SWT.BORDER);
metadataPanel.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false, 1, 1));
detailsPanel = new DetailsPanel(mainPanel, SWT.BORDER);
detailsPanel.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false, 1, 1));
// Status bar
statusBarPanel = new Composite(parent, SWT.NONE);
GridLayout gl_statusBarPanel = new GridLayout(1, false);
gl_statusBarPanel.verticalSpacing = 0;
gl_statusBarPanel.marginWidth = 0;
gl_statusBarPanel.marginHeight = 0;
statusBarPanel.setLayout(gl_statusBarPanel);
statusBarPanel.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
Label label = new Label(statusBarPanel, SWT.SEPARATOR | SWT.HORIZONTAL);
label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
label.setSize(64, 2);
statusBar = new Composite(statusBarPanel, SWT.NONE);
statusBar.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
statusBar.setLayout(new GridLayout(2, false));
statusLabel = new Label(statusBar, 0);
statusLabel.setSize(43, 20);
statusLabel.setText(Messages.Probe_statusLabelText);
statusField = new Label(statusBar, SWT.BORDER);
statusField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
statusField.setSize(326, 22);
statusField.setText(Messages.Probe_statusWaitingForPV);
createActions();
initializeToolBar();
// Determine initial state
String initialPVFormula = null;
boolean showViewer = false;
boolean showValue = true;
boolean showChangeValue = true;
boolean showMetadata = false;
boolean showDetails = false;
if (memento != null) {
initialPVFormula = memento.getString(MEMENTO_PVFORMULA);
showViewer = nullDefault(memento.getBoolean(MEMENTO_SHOW_VIEWER), showViewer);
showValue = nullDefault(memento.getBoolean(MEMENTO_SHOW_VALUE), showValue);
showChangeValue = nullDefault(memento.getBoolean(MEMENTO_SHOW_CHANGE_VALUE), showChangeValue);
showMetadata = nullDefault(memento.getBoolean(MEMENTO_SHOW_METADATA), showMetadata);
showDetails = nullDefault(memento.getBoolean(MEMENTO_SHOW_DETAILS), showDetails);
}
setPVFormula(initialPVFormula);
initSection(viewerPanel, showViewer);
initSection(valuePanel, showValue);
initSection(changeValuePanel, showChangeValue);
initSection(metadataPanel, showMetadata);
initSection(detailsPanel, showDetails);
parent.layout();
mainPanel.layout();
}
