/// <summary>
/// Update the visual state of the control.
/// </summary>
/// <param name="useTransitions">
/// A value indicating whether to automatically generate transitions to
/// the new state, or instantly transition to the new state.
/// </param>
/// <remarks>
/// UpdateVisualState works differently than the rest of the injected
/// functionality. Most of the other events are overridden by the
/// calling class which calls Allow, does what it wants, and then calls
/// Base. UpdateVisualState is the opposite because a number of the
/// methods in InteractionHelper need to trigger it in the calling
/// class. We do this using the IUpdateVisualState internal interface.
/// </remarks>
private void UpdateVisualState(bool useTransitions)
{
if (_updateVisualState != null)
{
_updateVisualState.UpdateVisualState(useTransitions);
}
}
/// <summary>
/// Updates the hover states of the rating items.
/// </summary>
private void UpdateHoverStates()
{
if (HoveredRatingItem != null && !IsReadOnly)
{
IList <RatingItem> ratingItems = GetRatingItems().ToList();
int indexOfItem = ratingItems.IndexOf(HoveredRatingItem);
double total = ratingItems.Count();
double filled = indexOfItem + 1;
DisplayValue = filled / total;
for (int cnt = 0; cnt < ratingItems.Count; cnt++)
{
RatingItem ratingItem = ratingItems[cnt];
if (cnt <= indexOfItem && SelectionMode == RatingSelectionMode.Continuous)
{
VisualStates.GoToState(ratingItem, true, VisualStates.StateMouseOver);
}
else
{
IUpdateVisualState updateVisualState = ratingItem;
updateVisualState.UpdateVisualState(true);
}
}
}
else
{
DisplayValue = Value.GetValueOrDefault();
foreach (IUpdateVisualState updateVisualState in GetRatingItems().OfType <IUpdateVisualState>())
{
updateVisualState.UpdateVisualState(true);
}
}
}
/// <summary>
/// Updates the hover states of the rating items.
/// </summary>
private void UpdateHoverStates()
{
if (HoveredRatingItem != null && IsEnabled)
{
IList <RatingItem> ratingItems = GetRatingItems().ToList();
int indexOfItem = ratingItems.IndexOf(HoveredRatingItem);
double total = ratingItems.Count();
double filled = indexOfItem + 1;
this.DisplayValue = filled / total;
for (int cnt = 0; cnt < ratingItems.Count; cnt++)
{
RatingItem ratingItem = ratingItems[cnt];
if (cnt <= indexOfItem && this.SelectionMode == RatingSelectionMode.Continuous)
{
VisualStates.GoToState(ratingItem, true, VisualStates.StatePointerOver);
}
else
{
IUpdateVisualState updateVisualState = (IUpdateVisualState)ratingItem;
updateVisualState.UpdateVisualState(true);
}
}
}
else
{
this.DisplayValue = this.Value;
foreach (IUpdateVisualState updateVisualState in GetRatingItems().OfType <IUpdateVisualState>())
{
updateVisualState.UpdateVisualState(true);
}
}
}
/// <summary>
/// Update the visual state of the control.
/// </summary>
/// <param name="useTransitions">
/// A value indicating whether to automatically generate transitions to
/// the new state, or instantly transition to the new state.
/// </param>
/// <remarks>
/// UpdateVisualState works differently than the rest of the injected
/// functionality. Most of the other events are overridden by the
/// calling class which calls Allow, does what it wants, and then calls
/// Base. UpdateVisualState is the opposite because a number of the
/// methods in InteractionHelper need to trigger it in the calling
/// class. We do this using the IUpdateVisualState internal interface.
/// </remarks>
void UpdateVisualState(bool useTransitions)
{
_updateVisualState?.UpdateVisualState(useTransitions);
}
