public void OnNext()
{
ChangingElement = true;
foreach (var element in ListBoxItems)
{
if (element.IsActive && ListBoxItems.Count != ListBoxItems.IndexOf(element) + 1)
{
if (element.Filename == PresentationViewModelProp.FrontElement.Filename)
{
PresentationViewModelProp.BackElement = ListBoxItems[ListBoxItems.IndexOf(element) + 1];
if (PresentationViewModelProp.BackElement.Art == FileArt.Video)
{
PresentationProp.MediaElementBack.Position = TimeSpan.FromSeconds(0);
}
ScrollOffsetNextElmt = PresentationViewModelProp.BackElement.ScrollOffset;
//Deckkraft Frontelement Runter Fahren
Delay.Start();
}
else
{
PresentationViewModelProp.FrontElement = ListBoxItems[ListBoxItems.IndexOf(element) + 1];
if (PresentationViewModelProp.FrontElement.Art == FileArt.Video)
{
PresentationProp.MediElementFront.Position = TimeSpan.FromSeconds(0);
}
ScrollOffsetNextElmt = PresentationViewModelProp.FrontElement.ScrollOffset;
PresentationViewModelProp.FrontElement.IsVisible = true;
//Deckraft Frontelement hochfahren
Delay.Start();
}
}
}
}
public void OnNextDirect(ListElementViewModel listElement)
{
if (PresentationViewModelProp.IsActive)
{
if (PresentationViewModelProp.FrontElement != null && PresentationViewModelProp.BackElement != null)
{
if (PresentationViewModelProp.FrontElement.IsActive)
{
PresentationViewModelProp.BackElement = ListBoxItems[ListBoxItems.IndexOf(listElement)];
ScrollOffsetNextElmt = PresentationViewModelProp.BackElement.ScrollOffset;
//Deckkraft Frontelement Runter Fahren
Delay.Start();
}
else
{
PresentationViewModelProp.FrontElement = ListBoxItems[ListBoxItems.IndexOf(listElement)];
ScrollOffsetNextElmt = PresentationViewModelProp.FrontElement.ScrollOffset;
PresentationViewModelProp.FrontElement.IsVisible = true;
//Deckraft Frontelement hochfahren
Delay.Start();
}
}
}
else
{
OnStart(listElement);
}
}
private void DelayLoadBackground_Tick(object sender, EventArgs e)
{
DelayLoadBackground.Stop();
ListElementViewModel nextElm = null;
if (PresentationViewModelProp.FrontElement.IsActive)
{
if (ListBoxItems[ListBoxItems.Count - 1].Filename != PresentationViewModelProp.FrontElement.Filename)
{
foreach (var item in ListBoxItems)
{
if (item.IsActive)
{
nextElm = ListBoxItems[ListBoxItems.IndexOf(item) + 1];
}
}
PresentationViewModelProp.BackElement = nextElm;
}
}
else
{
if (ListBoxItems[ListBoxItems.Count - 1].Filename != PresentationViewModelProp.BackElement.Filename)
{
foreach (var item in ListBoxItems)
{
if (item.IsActive)
{
nextElm = ListBoxItems[ListBoxItems.IndexOf(item) + 1];
nextElm.IsVisible = false;
}
}
PresentationViewModelProp.FrontElement = nextElm;
}
}
}
