/// <summary>
/// Closes the Popup.
/// </summary>
private void ClosePopup(string key)
{
if (null != OverlayClosed)
{
OverlayClosed(this, null);
}
if (null != _page)
{
_page.BackKeyPress -= new EventHandler <System.ComponentModel.CancelEventArgs>(OnBackKeyPress);
}
if (null != _popup)
{
_popup.IsOpen = false;
_popup.Child = null;
_popup = null;
}
if (null != _overlayPanel)
{
_overlayPanel.Children.Clear();
_overlayPanel = null;
}
if (_overlay != null)
{
_overlay.TileSelected -= new QuickJumpGridOverlay.TileSelectedEventHandler(OnOverlayTileSelected);
_overlay = null;
}
if (null != _rootVisual)
{
_rootVisual.SizeChanged -= new SizeChangedEventHandler(HandleRootVisualSizeChanged);
}
Dispatcher.BeginInvoke(() =>
{
try
{
if (!String.IsNullOrEmpty(key))
{
_itemsControlHelper.ScrollHost.ScrollToVerticalOffset(this.Items.IndexOf(key));
}
}
catch (Exception ex)
{
Debug.WriteLine("ScrollToVerticalOffset Exception: {0}", ex);
}
});
IsOverlayOpen = false;
}
/// <summary>
/// Opens the Popup.
/// </summary>
/// <param name="position">Position to place the Popup.</param>
private void OpenPopup()
{
if (IsOverlayOpen)
{
return;
}
else
{
IsOverlayOpen = true;
}
if (null != OverlayOpened)
{
OverlayOpened(this, null);
}
InitializeRootVisual();
_overlayPanel = new Grid {
Background = OverlayBackground
};
UpdateOverlayPlacement();
if (_overlay == null)
{
_overlay = new QuickJumpGridOverlay(this);
_overlay.ItemsSource = _quickJumpLookup;
_overlay.TileSelected += new QuickJumpGridOverlay.TileSelectedEventHandler(OnOverlayTileSelected);
}
_overlayPanel.Children.Add(_overlay);
_popup = new Popup {
Child = _overlayPanel
};
if (null != _rootVisual)
{
_rootVisual.SizeChanged += new SizeChangedEventHandler(HandleRootVisualSizeChanged);
}
if (null != _page)
{
_page.BackKeyPress += new EventHandler <System.ComponentModel.CancelEventArgs>(OnBackKeyPress);
}
_popup.InvokeOnLayoutUpdated(() =>
{
_overlay.Show();
});
_popup.IsOpen = true;
}