private static void UpdateChannel(FreeSCADA.CLServer.ChannelState state, RemoutingChannel channel)
{
object channelValue = null;
Type valueType = Type.GetType(state.Type);
if (valueType != null)
{
channelValue = Convert.ChangeType(state.Value, valueType);
}
else
{
channelValue = Convert.ChangeType(state.Value, channel.Type);
}
ChannelStatusFlags flags = ChannelStatusFlags.Unknown;
switch (state.Status)
{
case FreeSCADA.CLServer.ChannelStatusFlags.Bad:
flags = ChannelStatusFlags.Bad;
break;
case FreeSCADA.CLServer.ChannelStatusFlags.Good:
flags = ChannelStatusFlags.Good;
break;
case FreeSCADA.CLServer.ChannelStatusFlags.NotUsed:
flags = ChannelStatusFlags.NotUsed;
break;
}
channel.DoUpdate(channelValue, state.ModifyTime, flags);
}
private void UpdateChannelFunc(IChannel channel)
{
if (statusFlags != channel.StatusFlags)
{
statusFlags = channel.StatusFlags;
(ToolTip as ToolTip).Content = "Variable: " + channel.PluginId + "." + channel.Name + ", Status: " + channel.Status;
}
this.InvalidateVisual();
}
public virtual void DoUpdate(object value, DateTime externalTime, ChannelStatusFlags status)
{
try
{
InternalSetValue(value, externalTime, status);
}
catch (Exception e)
{
Env.Current.Logger.LogError(e.Message);
}
}
public BaseChannel(string name, bool readOnly, ICommunicationPlug plugin, Type type)
{
this.name = name;
this.readOnly = readOnly;
this.plugin = plugin;
this.type = type;
defaultValue = type.IsValueType ? Activator.CreateInstance(type) : null;
if (type == typeof(string))
{
defaultValue = "";
}
value = defaultValue;
modifyTime = DateTime.MinValue;
status = ChannelStatusFlags.Unknown;
}
protected void InternalSetValue(object value, DateTime externalTime, ChannelStatusFlags status)
{
bool fire = false;
lock (this)
{
object old = this.value;
if (value != null)
{
this.value = value;
this.type = value.GetType();
this.status = status;
}
else
{
this.value = defaultValue;
this.type = defaultValue.GetType();
this.status = ChannelStatusFlags.Unknown;
}
modifyTime = externalTime;
if (old != null)
{
fire = !old.Equals(this.value);
}
else
{
fire = true;
}
}
if (fire)
{
FireValueChanged();
}
}
public virtual void DoUpdate(object value, DateTime externalTime, ChannelStatusFlags status)
{
InternalSetValue(value, externalTime, status);
}
