public Solver.Criteria ShowDialog(Solver.Criteria criteria)
{
if (criteria == null)
{
Criteria_ = null;
Text = "Add Criteria";
btnRevert.Enabled = false;
}
else
{
Criteria_ = criteria.DeepCopy();
Text = "Edit Criteria";
btnRevert.Enabled = true;
}
LoadFromCriteria();
DialogResult result = base.ShowDialog();
if (result == DialogResult.OK)
{
return(Criteria_);
}
return(null);
}
private void ListBoxCriteriaDragDrop(object sender, DragEventArgs e)
{
if (!e.Data.GetDataPresent(typeof(Solver.Criteria)))
{
return;
}
var location = listBoxCriteria.PointToClient(new Point(e.X, e.Y));
_dragTarget = listBoxCriteria.IndexFromPoint(location);
_dragCriteria = (Solver.Criteria)e.Data.GetData(typeof(Solver.Criteria));
}
private void ListBoxCriteriaMouseDown(object sender, MouseEventArgs e)
{
var index = listBoxCriteria.IndexFromPoint(e.Location);
if (index == -1)
{
listBoxCriteria.SelectedIndex = -1;
return;
}
if (e.Clicks == 2 && e.Button == MouseButtons.Left)
{
EditCriteria();
return;
}
var criteria = (Solver.Criteria)listBoxCriteria.Items[index];
_dragTarget = -1;
_dragCriteria = null;
// drag drop failed
if (listBoxCriteria.DoDragDrop(criteria, DragDropEffects.Move) != DragDropEffects.Move)
{
return;
}
// some sort of conflict
if (_dragTarget == -1 || _dragCriteria != criteria)
{
return;
}
// moving back to same position
if (_dragTarget == index)
{
return;
}
if (_dragTarget > index)
{
listBoxCriteria.Items.Insert(_dragTarget + 1, criteria);
listBoxCriteria.Items.RemoveAt(index);
}
else
{
listBoxCriteria.Items.RemoveAt(index);
listBoxCriteria.Items.Insert(_dragTarget, criteria);
}
listBoxCriteria.SelectedIndex = _dragTarget;
// not preset anymore
comboBoxPresets.SelectedIndex = -1;
}
private void btnOK_Click(object sender, EventArgs e)
{
if (ddField.SelectedIndex == -1)
{
MessageBox.Show("Please select a criteria.", "Criteria Details", MessageBoxButtons.OK,
MessageBoxIcon.Exclamation);
ddField.Focus();
return;
}
if (ddPreference.SelectedIndex == -1)
{
MessageBox.Show("Please select a preference.", "Criteria Details", MessageBoxButtons.OK,
MessageBoxIcon.Exclamation);
ddPreference.Focus();
return;
}
Criteria_ = new Solver.Criteria(
(Solver.FieldIndex)ddField.SelectedIndex,
(Solver.Preference)ddPreference.SelectedIndex);
DialogResult = DialogResult.OK;
Close();
}
