public InteractionHelper(Control control)
{
Debug.Assert(control != null, "control should not be null!");
Control = control;
_updateVisualState = control as IUpdateVisualState;
control.Loaded += OnLoaded;
control.IsEnabledChanged += OnIsEnabledChanged;
}
/// <summary>
/// Initializes a new instance of the InteractionHelper class.
/// </summary>
/// <param name="control">Control receiving interaction.</param>
public InteractionHelper(Control control)
{
Debug.Assert(control != null, "control should not be null!");
Control = control;
_updateVisualState = control as IUpdateVisualState;
// Wire up the event handlers for events without a virtual override
control.Loaded += OnLoaded;
control.IsEnabledChanged += OnIsEnabledChanged;
}
/// <summary>
/// Initializes a new instance of the InteractionHelper class.
/// </summary>
/// <param name="control">Control receiving interaction.</param>
public InteractionHelper(Control control)
{
Debug.Assert(control != null, "control should not be null!");
Control = control;
_updateVisualState = control as IUpdateVisualState;
// Wire up the event handlers for events without a virtual override
control.Loaded += OnLoaded;
control.IsEnabledChanged += OnIsEnabledChanged;
}
/// <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>
/// 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);
}
}
}