public PremiseCommand(PremiseObject holdingObject, string propertyName) {
_holdingObject = holdingObject;
_propertyName = propertyName;
}
/// <summary>
/// Send an unsubscribe request to the server.
/// </summary>
/// <param name="po"></param>
/// <param name="propertyName"></param>
public async Task Unsubscribe(PremiseObject po, string propertyName) {
try {
// Find subscription
foreach (var subscription in _subscriptions) {
if (subscription.Value.PropertyName == propertyName &&
subscription.Value.Object.Location == po.Location) {
_subscriptions.Remove(subscription.Key);
string command = "?c?" + subscription.Key;
if (FastMode)
await SendRequestFastMode(command);
else {
await SendRequest(command);
}
return;
}
}
}
catch (Exception ex) {
Dispose();
throw ex;
}
}
// Default implementation of method to set an object property's value
// Assumes same thread.
public void DispatchSetMember(PremiseObject obj, string propertyName, string value) {
obj.SetMember(propertyName, value, false);
}
/// <summary>
/// Send a subscription request to the server.
/// </summary>
/// <param name="po">The object with the property to subscribe.</param>
/// <param name="propertyName">Name of the property to subscribe.</param>
public async Task Subscribe(PremiseObject po, string propertyName) {
try {
Debug.Assert(_subscriptionClient != null);
// Ignore multiple subscripitons
foreach (var subscription in _subscriptions) {
if (subscription.Value.PropertyName == propertyName &&
subscription.Value.Object.Location == po.Location)
return;
}
Subscription sub = new Subscription {Object = po, PropertyName = propertyName};
_subscriptions.Add(sub.GetHashCode(), sub);
await SendSubscriptionRequest(sub);
}
catch (Exception ex) {
Dispose();
throw ex;
}
}