protected override DataTemplate SelectTemplateCore(object item, DependencyObject container)
{
var boh = DataTemplate.GetExtensionInstance(container as FrameworkElement);
var presenter = container as ContentControl;
if (presenter != null && item is TLDocument doc)
{
presenter.Content = new TLMessage {
Media = new TLMessageMediaDocument {
Document = doc
}
};
}
if (item is TLMessage message)
{
item = message.Media;
}
if (item is TLMessageMediaEmpty)
{
return(EmptyTemplate);
}
else if (item is TLMessageMediaContact)
{
return(ContactTemplate);
}
else if (item is TLMessageMediaPhoto)
{
return(PhotoTemplate);
}
else if (item is TLMessageMediaGame)
{
return(GameTemplate);
}
else if (item is TLMessageMediaVenue)
{
return(VenueTemplate);
}
else if (item is TLMessageMediaGeo)
{
return(GeoPointTemplate);
}
else if (item is TLMessageMediaInvoice invoiceMedia)
{
if (invoiceMedia.HasPhoto && invoiceMedia.Photo != null)
{
return(InvoicePhotoTemplate);
}
return(InvoiceTemplate);
}
else if (item is TLMessageMediaDocument || item is TLDocument)
{
if (item is TLMessageMediaDocument documentMedia)
{
item = documentMedia.Document;
}
if (item is TLDocument document)
{
if (TLMessage.IsVoice(document))
{
return(AudioTemplate);
}
else if (TLMessage.IsVideo(document))
{
return(VideoTemplate);
}
else if (TLMessage.IsRoundVideo(document))
{
return(RoundVideoTemplate);
}
else if (TLMessage.IsGif(document))
{
return(GifTemplate);
}
else if (TLMessage.IsSticker(document))
{
return(StickerTemplate);
}
else if (TLMessage.IsMusic(document))
{
return(MusicTemplate);
}
// TODO: ???
//var externalDocument = documentMedia.Document as TLDocumentExternal;
//if (externalDocument != null && TLMessage.IsGif(externalDocument))
//{
// return GifTemplate;
//}
if (document.Thumb != null && !(document.Thumb is TLPhotoSizeEmpty))
{
return(DocumentThumbTemplate);
}
}
return(DocumentTemplate);
}
else if (item is TLMessageMediaWebPage webpageMedia)
{
if (webpageMedia.WebPage is TLWebPageEmpty)
{
return(EmptyTemplate);
}
else if (webpageMedia.WebPage is TLWebPagePending)
{
return(EmptyTemplate);
}
else if (webpageMedia.WebPage is TLWebPage webpage)
{
/*if (TLMessage.IsGif(webpage.Document))
* {
* return WebPageGifTemplate;
* }
* else
* if (webpage.Document != null && webpage.Type.Equals("document", StringComparison.OrdinalIgnoreCase))
* {
* return WebPageDocumentTemplate;
* }*/
if (webpage.Document != null)
{
return(WebPageDocumentTemplate);
}
if (webpage.Photo != null && webpage.Type != null)
{
if (IsWebPagePhotoTemplate(webpage))
{
return(WebPagePhotoTemplate);
}
return(WebPageSmallPhotoTemplate);
}
}
return(WebPageTemplate);
}
else if (item is TLMessageMediaUnsupported)
{
return(UnsupportedTemplate);
}
return(null);
}