/** * Manages a collection of brokers objects. * * <p>This class is thread safe. * * @author <a href="mailto:[email protected]">Will Horn</a> * @version $Id$ * @since 1.0.0 */ @ClassVersion("$Id$") public final class BrokerManager implements IBrokerIdValidator { /** The default/null broker. */ private static final Broker AUTO_SELECT_BROKER = new Broker(Messages.BROKER_MANAGER_AUTO_SELECT.getText(), null); /** * Returns the singleton instance for the currently running plug-in. * * @return the singleton instance */ public static BrokerManager getCurrent() { return PhotonPlugin.getDefault().getBrokerManager(); } private final IObservableList mAvailableBrokers = new WritableList(new SyncRealm(), Lists.newArrayList(AUTO_SELECT_BROKER), Broker.class); private final IObservableList mUnmodifiableAvailableBrokers = Observables.unmodifiableObservableList(mAvailableBrokers); private final Map<BrokerID, Broker> mBrokerMap = Maps.newHashMap(); /** * Returns an observable list of the available brokers managed by this class. The returned list * should not be modified. * * @return the available brokers */ public IObservableList getAvailableBrokers() { return mUnmodifiableAvailableBrokers; } /** * Updates the available brokers from a {@link BrokersStatus} event. * * @param statuses the new statuses */ public synchronized void setBrokersStatus(BrokersStatus statuses) { mBrokerMap.clear(); mAvailableBrokers.clear(); List<Broker> availableBrokers = Lists.newArrayList(); availableBrokers.add(AUTO_SELECT_BROKER); for (BrokerStatus status : statuses.getBrokers()) { if (status.getLoggedOn()) { Broker broker = new Broker(status.getName(), status.getId()); mBrokerMap.put(status.getId(), broker); availableBrokers.add(broker); } } mAvailableBrokers.addAll(availableBrokers); } @Override public synchronized boolean isValid(String brokerId) { Validate.notNull(brokerId, "brokerID"); // $NON-NLS-1$ return mBrokerMap.containsKey(new BrokerID(brokerId)); } /** * Returns the {@link Broker} object for a given {@link BrokerID}. If no Broker is found, null is * returned. * * @param brokerId the broker id * @return the broker */ public synchronized Broker getBroker(BrokerID brokerId) { if (brokerId == null) { return AUTO_SELECT_BROKER; } return mBrokerMap.get(brokerId); } /** Synchronizes access to the available brokers list. */ @ClassVersion("$Id$") private final class SyncRealm extends Realm { @Override public boolean isCurrent() { return true; } @Override protected void syncExec(Runnable runnable) { synchronized (BrokerManager.this) { super.syncExec(runnable); } } } /** A Photon abstraction for a broker. */ @ClassVersion("$Id$") public static final class Broker { private final String mName; private final BrokerID mId; private Broker(String name, BrokerID id) { mName = name; mId = id; } /** * Returns the broker name. * * @return the broker name */ public String getName() { return mName; } /** * Returns the broker id. * * @return the broker id */ public BrokerID getId() { return mId; } } /** Adapter for displaying {@link Broker} objects. */ @ClassVersion("$Id$") public static final class BrokerLabelProvider extends LabelProvider { @Override public String getText(Object element) { Broker broker = (Broker) element; if (broker == BrokerManager.AUTO_SELECT_BROKER) return broker.getName(); return Messages.BROKER_LABEL_PATTERN.getText(broker.getName(), broker.getId()); } } }
/**
* Returns the collection of trade suggestions.
*
* @return the trade suggestions
*/
public IObservableList getTradeSuggestions() {
return Observables.unmodifiableObservableList(mSuggestions);
}