/// <summary>
/// Adds the specified <see cref="ICadencedControl" /> to the list of managed controls. If this is the first
/// <paramref name="control" /> being added, then the update timer is configured and started.
/// </summary>
/// <remarks>
/// Each <paramref name="control" /> can only appear in the list once (duplicate adds will be silently
/// ignored).
/// </remarks>
/// <param name="control">The control to be managed.</param>
public void Add(ICadencedControl control)
{
var hashCode = control.GetHashCode();
Trace.WriteLine($"Adding hash {hashCode}");
if (ControlList.ContainsKey(hashCode))
{
Trace.TraceWarning($"Ignoring duplicate hash code {hashCode}.");
}
else
{
ControlList.Add(hashCode, new WeakReference <ICadencedControl>(control));
}
if (updateTask == null)
{
StartUpdates();
}
}
/// <summary>
/// Removes a <paramref name="control" /> from the
/// <see cref="TA.WinFormsControls.CadencedControlUpdater.ControlList" /> . If no managed controls remain in
/// the list, then the update timer is stopped.
/// </summary>
public void Remove(ICadencedControl control)
{
try
{
var hash = control.GetHashCode();
Trace.TraceInformation($"Removing hash {hash}");
if (ControlList.ContainsKey(hash))
{
ControlList.Remove(hash);
}
}
catch (Exception e)
{
Trace.TraceError($"{e.GetType().Name} removing control: {e.Message}");
}
finally
{
if (!ControlList?.Any() ?? false)
{
StopUpdates();
}
}
}