protected override void OnFocusGrabbed()
{
base.OnFocusGrabbed();
if (plots.Count < 1)
{
return;
}
// don't switch focus if any plot already has focus
foreach (IPlot plot in plots)
{
if (plot.HasFocus)
{
return;
}
}
// find the plot with the smallest x value, and focus it
int min_plot = -1;
int min_x = Int32.MaxValue;
int min_y = Int32.MaxValue;
for (int i = 0; i < plots.Count; i++)
{
IPlot plot = (IPlot)plots[i];
if (!plot.CanFocus)
{
continue;
}
int x, y;
plot.GetGrabFocusRequest(out x, out y);
if ((min_x > x) || (min_x == x && min_y > y))
{
min_x = x;
min_y = y;
min_plot = i;
}
}
if (min_plot == -1)
{
return;
}
((IPlot)plots[min_plot]).GrabFocus();
focused_plot_index = min_plot;
}
