@Override
public void widgetSelected(SelectionEvent event) {
MenuItem selected = null;
if (event.widget instanceof MenuItem) {
selected = (MenuItem) event.widget;
} else return;
try {
if (selected.equals(spinOn)) {
spin.on();
logger.info("Switch ON beam monitor.");
} else if (selected.equals(spinOff)) {
spin.off();
logger.info("Switch OFF beam monitor.");
}
} catch (DeviceException e) {
logger.error("Failed to control spin", e);
}
}
public SpinStatusComposite(
Composite parent, int style, final Display display, String label, ISpin spin) {
super(parent, style);
GridDataFactory.fillDefaults().applyTo(this);
GridLayoutFactory.swtDefaults().numColumns(1).applyTo(this);
Group grp = new Group(this, style);
GridDataFactory.fillDefaults().applyTo(grp);
GridLayoutFactory.swtDefaults().numColumns(1).applyTo(grp);
grp.setText(label);
this.display = display;
GridLayoutFactory.swtDefaults().numColumns(1).applyTo(this);
GridDataFactory.fillDefaults().applyTo(this);
this.spin = spin;
currentColor = SPIN_OFF_COLOR;
try {
if (spin.getState().equalsIgnoreCase("enabled")) {
currentColor = SPIN_ON_COLOR;
} else {
currentColor = SPIN_OFF_COLOR;
}
} catch (DeviceException e1) {
logger.error("Failed to get spin status", e1);
}
canvas = new Canvas(grp, SWT.NONE);
GridData gridData = new GridData(GridData.VERTICAL_ALIGN_FILL);
gridData.widthHint = 40;
gridData.heightHint = 40;
canvas.setLayoutData(gridData);
canvas.addPaintListener(
new PaintListener() {
@Override
public void paintControl(PaintEvent e) {
GC gc = e.gc;
gc.setAntialias(SWT.ON);
gc.setBackground(currentColor);
gc.setLineWidth(1);
Rectangle clientArea = canvas.getClientArea();
final int margin = 4;
final Point topLeft = new Point(margin, margin);
final Point size =
new Point(clientArea.width - margin * 2, clientArea.height - margin * 2);
gc.fillOval(topLeft.x, topLeft.y, size.x, size.y);
gc.drawOval(topLeft.x, topLeft.y, size.x, size.y);
}
});
canvas.setMenu(createPopup(this));
// initialize tooltip
try {
if (spin.getState().equalsIgnoreCase("enabled")) {
canvas.setToolTipText(SPIN_ON_TOOL_TIP);
spinOn.setSelection(true);
} else {
canvas.setToolTipText(SPIN_OFF_TOOL_TIP);
spinOff.setSelection(true);
}
} catch (DeviceException e1) {
logger.error("Failed to get spin status", e1);
}
final IObserver spinObserver =
new IObserver() {
@Override
public void update(final Object theObserved, final Object changeCode) {
Display.getDefault()
.asyncExec(
new Runnable() {
@Override
public void run() {
String value = "";
if (theObserved instanceof ISpin) {
if (changeCode instanceof String) {
value = ((String) changeCode);
if (value.equalsIgnoreCase("Enabled")) {
currentColor = SPIN_ON_COLOR;
canvas.setToolTipText(SPIN_ON_TOOL_TIP);
spinOn.setSelection(true);
} else {
currentColor = SPIN_OFF_COLOR;
canvas.setToolTipText(SPIN_OFF_TOOL_TIP);
spinOff.setSelection(true);
}
}
}
updateBatonCanvas();
}
});
}
};
spin.addIObserver(spinObserver);
}