// Handler called when the user double-clicks the list box.
private void ValueListBox_DoubleClick(object sender, EventArgs e)
{
// Ensure that the user double-clicked on an item in the list box.
int index = ValueListBox.IndexFromPoint(ValueListBox.PointToClient(MousePosition));
if (index != ListBox.NoMatches)
{
DialogResult = DialogResult.OK;
Close();
}
}
// Initializes the edit dialog to set the value of the given element.
public void Initialize(Element element)
{
if ((object)element == null)
{
return;
}
Tag tag = GSF.PQDIF.Tag.GetTag(element.TagOfElement);
// Determine whether the tag definition contains
// a list of identifiers which can be used to
// display the value in a more readable format
IReadOnlyCollection <Identifier> identifiers = tag?.ValidIdentifiers ?? new List <Identifier>();
// Some identifier collections define a set of bitfields which can be
// combined to represent a collection of states rather than a single value
// and these are identified by the values being represented in hexadecimal
List <Identifier> bitFields = identifiers.Where(id => id.Value.StartsWith("0x")).ToList();
if (bitFields.Count > 0)
{
// Get the value of the element
uint value = Convert.ToUInt32(((ScalarElement)element).Get());
// Values with bitfields will be displayed in a checked list box
ValueCheckedListBox.Visible = true;
ValueCheckedListBox.Focus();
// Populate the checked list box with the valid bitfields
foreach (Identifier bitField in bitFields)
{
uint bit = Convert.ToUInt32(bitField.Value, 16);
ValueCheckedListBox.Items.Add(bitField.Name, (value & bit) > 0u);
}
// Set up the function to get the value entered by the user
m_getValue = () => "{ " + string.Join(", ", ValueCheckedListBox.CheckedItems.Cast <string>()) + " }";
}
else if (identifiers.Count > 0)
{
// Get the value of the element
string value = ((ScalarElement)element).Get().ToString();
// Values with IDs will be displayed in a regular list box
ValueListBox.Visible = true;
ValueListBox.Focus();
// Populate the list box with the valid identifiers
foreach (Identifier identifier in identifiers.OrderBy(identifier => identifier.Name))
{
ValueListBox.Items.Add(identifier.Name);
if (value == identifier.Value)
{
ValueListBox.SelectedIndex = ValueListBox.Items.Count - 1;
}
}
// Set up the function to get the value entered by the user
m_getValue = () => ValueListBox.SelectedItem?.ToString();
}
else
{
// All other values will be displayed in an editable text box
ValueTextBox.Visible = true;
ValueTextBox.Focus();
ValueTextBox.Text = element.ValueAsString();
// Set up the function to get the value entered by the user
m_getValue = () => ValueTextBox.Text;
}
}
