/// <summary>
/// Creates a graph from a node, prompting use to save file
/// </summary>
/// <param name="n"></param>
private void CreateGraph(TreeBankNode n)
{
saveFileDialog.Title = "Select output path for graph";
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
if (_dot == null)
{
try
{
_dot = new Dot(Settings.Default.DotPath);
}
catch (Exception)
{
openFileDialog.Title = "Select path to Dot executable";
if (openFileDialog.ShowDialog() != DialogResult.OK || !File.Exists(openFileDialog.FileName))
{
throw new Exception("Dot path not specified. Cannot create graph.");
}
_dot = new Dot(openFileDialog.FileName);
Settings.Default.DotPath = _dot.DotPath;
Settings.Default.Save();
}
}
if (outputFormat.SelectedItem == null)
{
MessageBox.Show("No output format selected. Using PNG.");
outputFormat.SelectedItem = Dot.OutputFormat.PNG;
}
_dot.CreateGraph(n, (Dot.OutputFormat)outputFormat.SelectedItem, saveFileDialog.FileName);
}
}