/// <summary>
/// MinimumProperty property changed handler.
/// </summary>
/// <param name="d">RangeBase that changed its Minimum.</param>
/// <param name="e">DependencyPropertyChangedEventArgs.</param>
///
private static void OnMinimumPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RangeBase range = d as RangeBase;
Debug.Assert(range != null);
// Ensure it's a valid value
if (!IsValidDoubleValue(e.NewValue))
{
throw new ArgumentException();
}
// Note: this section is a workaround, containing my
// logic to hold all calls to the property changed
// methods until after all coercion has completed
// ----------
if (range._levelsFromRootCall == 0)
{
range._initialMax = range.Maximum;
range._initialVal = range.Value;
}
range._levelsFromRootCall++;
// ----------
range.CoerceMaximum();
range.CoerceValue();
// Note: this section completes my workaround to call
// the property changed logic if all coercion has completed
// ----------
range._levelsFromRootCall--;
if (range._levelsFromRootCall == 0)
{
range.OnMinimumChanged((double)e.OldValue, (double)e.NewValue);
// UIA event
range.RaiseChangeEvent(Change.Minimum, (double)e.OldValue, (double)e.NewValue);
double maximum = range.Maximum;
if (range._initialMax != maximum)
{
range.OnMaximumChanged(range._initialMax, maximum);
// UIA event
range.RaiseChangeEvent(Change.Maximum, range._initialMax, maximum);
}
double value = range.Value;
if (range._initialVal != value)
{
range.OnValueChanged(range._initialVal, value);
}
}
// ----------
}
/// <summary>
/// SmallChangeProperty property changed handler.
/// </summary>
/// <param name="d">RangeBase that changed its SmallChange.</param>
/// <param name="e">DependencyPropertyChangedEventArgs.</param>
private static void OnSmallChangePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RangeBase range = d as RangeBase;
Debug.Assert(range != null);
// Ensure it's a valid value
if (!IsValidChange(e.NewValue))
{
throw new ArgumentException();
}
// UIA event
range.RaiseChangeEvent(Change.Small, (double)e.OldValue, (double)e.NewValue);
}