/// <summary>Raised when the adapter's control has been added to a page and is about to be displayed.</summary>
/// <param name="sender">The control that raised this event.</param>
/// <param name="e">Event arguments providing the original source of this event.</param>
private void OnLoaded(object sender, System.Windows.RoutedEventArgs e)
{
// Fetch this control's parent page.
var parentPage = DotNetPageServices.FetchParentPageFrom(fControl);
if (parentPage == null)
{
return;
}
// Do not continue if this control has already been loaded on the page.
// Note: This can occur if the parent page was unloaded and re-loaded later, which happens when
// navigating to another page within the app and then navigating back to the parent page.
var pageAdapter = fPageProxy.Page as Interop.UI.DotNetPageAdapter;
if ((pageAdapter != null) && (pageAdapter.Page == parentPage))
{
return;
}
// Store a reference to the new parent page.
if (pageAdapter != null)
{
pageAdapter.Page = null;
}
pageAdapter = new DotNetPageAdapter();
pageAdapter.Page = parentPage;
fPageProxy.Page = pageAdapter;
// Relay the event.
if (this.Loaded != null)
{
this.Loaded.Invoke(this, CoronaLabs.WinRT.EmptyEventArgs.Instance);
}
}
/// <summary>Raised when the adapter's control has been removed from the page and is no longer visible onscreen.</summary>
/// <param name="sender">The control that raised this event.</param>
/// <param name="e">Event arguments providing the original source of this event.</param>
private void OnUnloaded(object sender, System.Windows.RoutedEventArgs e)
{
// Do not continue if this control is still attached to its parent page.
// This can happen when navigating to another page within the app, where the parent page gets unloaded instead.
var parentPage = DotNetPageServices.FetchParentPageFrom(fControl);
if (parentPage != null)
{
return;
}
// Remove the page reference that the control is no longer attached to.
var pageAdapter = fPageProxy.Page as Interop.UI.DotNetPageAdapter;
if (pageAdapter != null)
{
pageAdapter.Page = null;
}
fPageProxy.Page = null;
// Relay the event.
if (this.Unloaded != null)
{
this.Unloaded.Invoke(this, CoronaLabs.WinRT.EmptyEventArgs.Instance);
}
}