private void BuildPopup()
{
_groupSelectorPopup = new Popup();
var bg = (Color)Resources["PhoneBackgroundColor"];
_border = new Border
{
Background = new SolidColorBrush(
Color.FromArgb(0xa0, bg.R, bg.G, bg.B))
};
GestureListener listener = GestureService.GetGestureListener(_border);
listener.GestureBegin += HandleGesture;
listener.GestureCompleted += HandleGesture;
listener.DoubleTap += HandleGesture;
listener.DragCompleted += HandleGesture;
listener.DragDelta += HandleGesture;
listener.DragStarted += HandleGesture;
listener.Flick += HandleGesture;
listener.Hold += HandleGesture;
listener.PinchCompleted += HandleGesture;
listener.PinchDelta += HandleGesture;
listener.PinchStarted += HandleGesture;
listener.Tap += HandleGesture;
_itemsControl = new LongListSelectorItemsControl();
_itemsControl.ItemTemplate = GroupItemTemplate;
_itemsControl.ItemsPanel = GroupItemsPanel;
_itemsControl.ItemsSource = ItemsSource;
_itemsControl.GroupSelected += itemsControl_GroupSelected;
_groupSelectorPopup.Child = _border;
ScrollViewer sv = new ScrollViewer()
{
HorizontalScrollBarVisibility = ScrollBarVisibility.Disabled
};
_border.Child = sv;
sv.Content = _itemsControl;
SetItemsControlSize();
}
/// <summary>
/// This method does all the necessary work to raise a gesture event. It sets the orginal source, does the routing,
/// handles Handled, and only creates the event args if they are needed.
/// </summary>
/// <typeparam name="T">This is the type of event args that will be raised.</typeparam>
/// <param name="eventGetter">Gets the specific event to raise.</param>
/// <param name="argsGetter">Lazy creator function for the event args.</param>
/// <param name="releaseMouseCapture">Indicates whether the mouse capture should be released </param>
private static void RaiseGestureEvent <T>(
Func <GestureListener, EventHandler <T> > eventGetter,
Func <T> argsGetter, bool releaseMouseCapture)
where T : GestureEventArgs
{
T args = null;
FrameworkElement originalSource = null;
bool handled = false;
foreach (FrameworkElement element in _elements)
{
if (releaseMouseCapture)
{
element.ReleaseMouseCapture();
}
if (!handled)
{
if (originalSource == null)
{
originalSource = element;
}
GestureListener helper = GestureService.GetGestureListenerInternal(element, false);
if (helper != null)
{
SafeRaise.Raise(eventGetter(helper), element, () =>
{
if (args == null)
{
args = argsGetter();
args.OriginalSource = originalSource;
}
return(args);
});
}
if (args != null && args.Handled == true)
{
handled = true;
}
}
}
}
protected override void ClearContainerForItemOverride(DependencyObject element, object item)
{
base.ClearContainerForItemOverride(element, item);
GestureService.GetGestureListener(element).Tap -= LongListSelectorItemsControl_Tap;
}
