/// <summary>
/// Get the the permission for this collection by a given identity.
/// </summary>
/// <returns>The permission the identity has over the given collection</returns>
public void SetPermission(TType collection, TIdentity identity, ReadWritePermission permission)
{
SetKeys(collection);
SetKeys(identity);
// Remove the collection from the list, unless we're the owners, in that case, just set it to no permission.
if (permission == ReadWritePermission.None && identity.Equals(collection.owner) == false)
{
_collectionToIdentity[collection].Remove(identity);
_identityToCollection[identity].Remove(new PermissionModel <TType>(collection, ReadWritePermission.None));
}
else
{
_collectionToIdentity[collection].Add(identity);
var c = _identityToCollection[identity];
var model = new PermissionModel <TType>(collection, permission);
// The equality operator ignores the permission on the PermissionModel object, however,
// the HashSet<T> doesn't update a value if the equality operator considers the object equal.
// Because of this the model is never set in the hashset; The only work around I could find was removing and re-adding.
c.Remove(model);
c.Add(model);
}
// Notify event listeners
if (_eventHandlers.ContainsKey(identity))
{
foreach (var d in _eventHandlers[identity])
{
d(new PermissionChangedResult <TType, TIdentity>(collection, identity, permission));
}
}
}
public bool Equals(PermissionModel <T> x, PermissionModel <T> y)
{
return(GetHashCode(x) == GetHashCode(y));
}
/// <summary>
/// Note: The permission is ignored in the hascode, this way a collection + permission's hash will ignore the permission.
/// When added to a haspmap it will overwrite previous entries.
/// </summary>
public int GetHashCode(PermissionModel <T> obj)
{
return(obj.obj.GetHashCode());
}