/// <summary>
/// Handles the <see cref="Selector.SelectionChanged"/> event for the "Variables" <see
/// cref="ListView"/> on the <see cref="VariablesTab"/> page.</summary>
/// <param name="sender">
/// The <see cref="Object"/> where the event handler is attached.</param>
/// <param name="args">
/// A <see cref="SelectionChangedEventArgs"/> object containing event data.</param>
/// <remarks>
/// <b>OnVariableSelected</b> updates the "Value" control with the data of the first
/// selected item in the "Variables" list view.</remarks>
private void OnVariableSelected(object sender, SelectionChangedEventArgs args)
{
args.Handled = true;
if (!this._initialized)
{
return;
}
// retrieve selected variable entry, if any
decimal value = 0m;
int index = VariableList.SelectedIndex;
if (index >= 0)
{
// update numeric control with variable value
VariableListItem item = (VariableListItem)VariableList.Items[index];
if (item.Target == null)
{
value = VariableClass.ParseUnscaled(item.Value);
}
else
{
ModifierTarget target;
if (!VariableClass.TryParseUnscaled(item.Value, out value, out target))
{
Debug.Fail("OnVariableSelected: TryParseUnscaled failed.");
}
Debug.Assert(target == item.Target.Value);
}
}
VariableUpDown.Value = value;
}
/// <summary>
/// Handles the <see cref="NumericUpDown.ValueChanged"/> event for the "Value" <see
/// cref="NumericUpDown"/> control on the <see cref="VariablesTab"/> page.</summary>
/// <param name="sender">
/// The <see cref="NumericUpDown"/> control sending the event.</param>
/// <param name="args">
/// An <see cref="EventArgs"/> object containing event data.</param>
/// <remarks>
/// <b>OnVariableChanged</b> updates the "Value" column of the first selected item in the
/// "Variables" list view, as well as the corresponding backing dictionary.</remarks>
private void OnVariableChanged(object sender, EventArgs args)
{
if (!this._initialized)
{
return;
}
// retrieve selected variable entry, if any
int index = VariableList.SelectedIndex;
if (index < 0)
{
return;
}
var item = (VariableListItem)VariableList.Items[index];
// extract decimal value and modifier flag
decimal oldValue;
if (item.Target == null)
{
oldValue = VariableClass.ParseUnscaled(item.Value);
}
else
{
ModifierTarget target;
if (!VariableClass.TryParseUnscaled(item.Value, out oldValue, out target))
{
Debug.Fail("OnVariableChanged: TryParseUnscaled failed.");
}
Debug.Assert(target == item.Target.Value);
}
// check if variable value has actually changed
if (VariableUpDown.Value == oldValue)
{
return;
}
int value = (int)VariableUpDown.Value;
// update variable value in collection
string formatValue;
if (item.Target == null)
{
this._currentVariables[item.Id] = value;
formatValue = VariableClass.FormatUnscaled(value, false);
}
else
{
this._currentVariableModifiers[item.Id].SetByTarget(item.Target.Value, value);
formatValue = VariableClass.FormatUnscaled(value, item.Target.Value);
}
// update variable value in list view
item.Value = formatValue;
VariableList.Items.Refresh();
VariableList.SelectAndShow(index);
}