private void deleteClass(object sender, System.EventArgs e)
{
TreeNode selectedNode;
ModelFolder parentFolder;
ModelClass deleteClass;
ModelClass scanClass;
parentFolder = null;
selectedNode = modelTree.SelectedNode;
if (selectedNode.Tag is ModelClass)
{
// Check to make sure there are no immediate dependencies
// otherwise display error. Also find the entry's parent
// folder if the class can be deleted.
deleteClass = (ModelClass)selectedNode.Tag;
foreach (ModelFolder folder in model.Folders)
{
foreach (object i in folder.Items)
{
if (i is ModelClass)
{
scanClass = (ModelClass)i;
if (deleteClass == scanClass)
{
parentFolder = folder;
}
foreach (ReferenceField child in scanClass.ReferenceFields)
{
if (child.ReferenceType.ParentClassEntry == deleteClass)
{
return;
}
}
}
}
}
// Since the loop completed, that means there
// were not references found. Delete the class.
if (parentFolder != null)
{
parentFolder.Items.Remove(deleteClass);
DataTypeManager.DeleteDataType(deleteClass);
refreshTree();
}
}
}