/// <summary>
/// Updates the status of the Property in UI
/// </summary>
/// <param name="useTransitions">if set to <c>true</c> then use transitions.</param>
protected virtual void GoToState(bool useTransitions)
{
if (_loading)
{
return;
}
BusyAnimation busy = FindChild(this, "busy") as BusyAnimation;
if (busy != null)
{
busy.IsRunning = IsBusy;
}
string newState;
if (IsBusy)
{
newState = "Busy";
}
else if (IsValid)
{
newState = "PropertyValid";
}
else
{
newState = RuleSeverity.ToString();
}
if (newState != _lastState || _lastImage == null)
{
_lastState = newState;
DisablePopup(_lastImage);
VisualStateManager.GoToState(this, newState, useTransitions);
if (newState != "Busy" && newState != "PropertyValid")
{
_lastImage = (FrameworkElement)FindChild(this, string.Format("{0}Image", newState.ToLower()));
EnablePopup(_lastImage);
}
}
}
private void ViewLoaded(object sender, RoutedEventArgs e)
{
if (DataContext is IRolodexViewModel)
{
var model = DataContext as IRolodexViewModel;
Grid root = null;
if (Content is Grid)
{
root = Content as Grid;
}
else if (Content is Border)
{
if ((Content as Border).Child is Grid)
{
root = (Content as Border).Child as Grid;
}
}
if (root != null)
{
if (root.Background == null)
{
root.Background = new SolidColorBrush(Colors.LightGray);
}
var curtainGrid = new Grid();
curtainGrid.SetValue(Canvas.ZIndexProperty, 9999);
curtainGrid.Opacity = 0.6;
curtainGrid.SetValue(Grid.RowSpanProperty, root.RowDefinitions.Count + 1);
curtainGrid.SetValue(Grid.ColumnSpanProperty, root.ColumnDefinitions.Count + 1);
var brush = new LinearGradientBrush {EndPoint = new Point(0.5, 1), StartPoint = new Point(0.5, 0)};
var stops = new GradientStopCollection();
var stop = new GradientStop {Color = new Color {R = 0x80, G = 0x74, B = 0xD4}};
stops.Add(stop);
stop = new GradientStop {Color = new Color {R = 0x80, G = 0x74, B = 0xD4}, Offset = 1};
stops.Add(stop);
stop = new GradientStop {Color = new Color {R = 0xB7, G = 0x84, B = 0xD0}, Offset = 0.5};
stops.Add(stop);
brush.GradientStops = stops;
curtainGrid.Background = brush;
var busyAnimation = new BusyAnimation
{
MinHeight = 48,
MinWidth = 48,
MaxHeight = 300,
MaxWidth = 300,
TabNavigation = System.Windows.Input.KeyboardNavigationMode.Cycle
};
var binding = new Binding("IsBusy");
busyAnimation.HorizontalAlignment = HorizontalAlignment.Stretch;
busyAnimation.VerticalAlignment = VerticalAlignment.Stretch;
busyAnimation.SetBinding(BusyAnimation.IsRunningProperty, binding);
curtainGrid.Children.Add(busyAnimation);
binding = new Binding("IsBusy") {Converter = new BooleanToVisibilityConverter()};
curtainGrid.SetBinding(VisibilityProperty, binding);
root.Children.Add(curtainGrid);
if (model.IsBusy)
{
Dispatcher.BeginInvoke(() => busyAnimation.Focus());
}
model.PropertyChanged += (o1, e1) =>
{
if (e1.PropertyName == "IsBusy")
{
if (model.IsBusy)
busyAnimation.Focus();
else
Focus();
}
};
Loaded -= ViewLoaded;
}
}
}
