/**
* Wrap the corrector's channel corresponding to the specified handle.
*
* @param handle Description of the Parameter
* @return Description of the Return Value
*/
protected ChannelWrapper wrapChannel(final String handle) {
Channel channel = _powerSupply.getChannel(handle);
ChannelWrapper wrapper = new ChannelWrapper(channel);
wrapper.addChannelEventListener(
new ChannelEventListener() {
/**
* The PV's monitored value has changed.
*
* @param channel the channel whose value has changed
* @param record The channel time record of the new value
*/
public void valueChanged(Channel channel, ChannelTimeRecord record) {
_latestField = record.doubleValue();
EVENT_PROXY.fieldChanged(CorrectorSupply.this, record, _latestField);
}
/**
* The channel's connection has changed. Either it has established a new connection or the
* existing connection has dropped.
*
* @param channel The channel whose connection has changed.
* @param connected The channel's new connection state
*/
public void connectionChanged(Channel channel, boolean connected) {
_latestField = Double.NaN;
EVENT_PROXY.connectionChanged(CorrectorSupply.this, connected);
}
});
wrapper.requestConnection();
return wrapper;
}
/**
* Set the field to the value specified.
*
* @param field the field in Tesla
*/
public void setField(final double field) {
try {
_powerSupply.setField(field);
} catch (Exception exception) {
throw new RuntimeException("Field setting exception.", exception);
}
}
/** Constructor */
public CorrectorSupply(final MagnetMainSupply powerSupply) {
PUT_HANDLER = new PutHandler();
_powerSupply = powerSupply;
_correctors = new ArrayList<CorrectorAgent>();
_latestField = Double.NaN;
_lowerFieldLimit = Double.NaN;
_upperFieldLimit = Double.NaN;
MESSAGE_CENTER = new MessageCenter();
EVENT_PROXY = MESSAGE_CENTER.registerSource(this, CorrectorSupplyListener.class);
wrapChannels();
LIMITS_HANDLER = new LimitsHandler(powerSupply.getChannel(MagnetMainSupply.FIELD_SET_HANDLE));
}
/**
* Read the field set point.
*
* @return the current field set point
*/
public double getFieldSetting() throws xal.ca.ConnectionException, xal.ca.GetException {
return _powerSupply.getFieldSetting();
}
/**
* Get the unique corrector ID.
*
* @return the supply's unique ID
*/
public String getID() {
return _powerSupply.getId();
}