private void ContentReaders_ItemRemoved(object sender, ObservableDictionaryEventArgs <Type, IContentReader> e)
{
lock (registeredContentReaders)
{
registeredContentReaders.Remove(e.Key);
}
}
private void ContentReaders_ItemAdded(object sender, ObservableDictionaryEventArgs <Type, IContentReader> e)
{
lock (registeredContentReaders)
{
registeredContentReaders.Add(e.Key, e.Value);
}
}
private void ContentReaders_ItemAdded(object sender, ObservableDictionaryEventArgs <Type, IContentReader> e)
{
if (e.Key == null || e.Value == null)
{
throw new ArgumentNullException("Cannot add a null Type/IContentReader", "value");
}
lock (registeredContentReaders)
{
registeredContentReaders.Add(e.Key, e.Value);
}
}
private void Properties_BeforeAddItem(ObservableDictionary <string, LayerStateProperties> sender, ObservableDictionaryEventArgs <string, LayerStateProperties> e)
{
if (e.Item.Value == null)
{
e.Cancel = true;
}
else if (this.Owner != null)
{
DxfDocument doc = this.Owner.Owner;
if (!doc.Layers.Contains(e.Item.Key))
{
e.Cancel = true;
}
if (!doc.Linetypes.Contains(e.Item.Value.LinetypeName))
{
e.Cancel = true;
}
}
else
{
e.Cancel = false;
}
}
