private void UpdatePropertySheet(IMapLayer layer)
{
if (!_layerPropertySheets.TryGetValue(layer, out UserControl sheet))
{
sheet = layer.GetPropertySheet();
if (sheet == null)
{
foreach (var child in pnlPropertiesHolder.Controls)
{
if (child is UserControl c)
{
c.Visible = false;
}
}
return;
}
if (!(sheet is IMapLayerPropertySheet sheet1))
{
MessageBox.Show($"layer returned an object that isn't an IMapLayerPropertySheet");
return;
}
_layerPropertySheets.Add(layer, sheet);
sheet1.Layer = layer;
}
if (pnlPropertiesHolder != sheet.Parent)
{
pnlPropertiesHolder.Controls.Add(sheet);
}
foreach (var child in pnlPropertiesHolder.Controls)
{
if (child is UserControl c)
{
c.Visible = c == sheet;
}
}
}