public virtual void OnShow()
{
if (ContentViewer != null)
{
AttachContentViewer?.Invoke(ContentViewer);
}
}
public void SetContentViewer(Content <Stream> pageContent)
{
if (pageContent == null)
{
ContentViewer = null;
return;
}
var viewerProvider = Registry.Pooled <ContentViewerProvider> ();
var viewer = viewerProvider.Supports(pageContent.ContentType);
if (viewer == null)
{
var io = Registry.Pooled <StreamContentIoPool> ().Find(pageContent.Data, IoMode.Read);
if (io != null)
{
var info = io.Detector.Use(pageContent.Data);
pageContent.ContentType = info.ContentType;
}
}
if (viewer != null)
{
viewer.SetContent(pageContent);
viewer.BackColor = Colors.White;
}
if (ContentViewer != viewer)
{
ContentViewer = viewer;
AttachContentViewer?.Invoke(viewer);
var display = viewer?.Frontend as IDisplay;
if (display == null)
{
return;
}
display.ZoomState = ZoomState.FitToWidth;
display.ActionDispatcher.Remove(display.ActionDispatcher.GetAction <KeyScrollAction> ());
var scroller = display.ActionDispatcher.GetAction <DigidocKeyScrollAction> ();
if (scroller == null)
{
scroller = new DigidocKeyScrollAction();
scroller.Viewport = () => display.Viewport;
display.ActionDispatcher.Add(scroller);
}
}
}
