private void AddTag(string topic, string tag)
{
if (string.IsNullOrWhiteSpace(topic))
{
return;
}
if (string.IsNullOrWhiteSpace(tag))
{
return;
}
if (TagValueViewModels.Any(t => t.Tag == tag && t.Topic == topic))
{
return;
}
var tvvm = new TagValueViewModel(tag, topic);
TagValueViewModels.Add(tvvm);
log.Add($"{DateTime.Now}: Subscribed to item {tag} on topic {topic}");
}
private async void SearchTopicChanged(string oldTopic)
{
if (!string.IsNullOrWhiteSpace(oldTopic))
{
if (!TagValueViewModels.Any(t => t.Topic == oldTopic))
{
client.Unsubscribe(oldTopic);
log.Add($"{DateTime.Now}: Unsubscribed from topic {oldTopic}");
}
}
if (!string.IsNullOrWhiteSpace(SearchTopic))
{
if (!TagValueViewModels.Any(t => t.Topic == SearchTopic))
{
client.Subscribe(SearchTopic);
log.Add($"{DateTime.Now}: Subscribed to topic {SearchTopic}");
}
}
Tags = new ObservableCollection <TagTopicViewModel>();
}