/// <summary>
/// Sets the next media node. Should be used either from a mediaComplete event, or an options reset from
/// the parent.
/// </summary>
private bool SetNextMediaNode()
{
int playingSequence = currentSequence;
// What if there are no media nodes?
if (options.mediaNodes.Count == 0)
{
System.Diagnostics.Debug.WriteLine("No media nodes to display", "Region - SetNextMediaNode");
hasExpired = true;
return(false);
}
if (options.mediaNodes.Count == 1 && currentSequence != -1)
{
//dont bother discarding this media, keep all the same details, but still trigger an expired event
System.Diagnostics.Debug.WriteLine("Media Expired:" + options.ToString() + " . Nothing else to show", "Region - SetNextMediaNode");
hasExpired = true;
DurationElapsedEvent();
return(true);
}
// Move the sequence on
currentSequence++;
if (currentSequence >= options.mediaNodes.Count)
{
currentSequence = 0; //zero it
hasExpired = true; //we have expired (want to raise an expired event to the parent)
System.Diagnostics.Debug.WriteLine("Media Expired:" + options.ToString() + " . Reached the end of the sequence. Starting from the beginning.", "Region - SetNextMediaNode");
DurationElapsedEvent();
// We want to continue on to show the next media (unless the duration elapsed event triggers a region change)
if (layoutExpired)
{
return(true);
}
}
//Zero out the options that are persisted
options.text = "";
options.documentTemplate = "";
options.copyrightNotice = "";
options.scrollSpeed = 30;
options.updateInterval = 6;
options.Uri = "";
options.direction = "none";
options.javaScript = "";
options.Dictionary = new MediaDictionary();
// Get a media node
bool validNode = false;
int numAttempts = 0;
while (!validNode)
{
numAttempts++;
// Get the media node for this sequence
LayoutRegionMedia medium = options.mediaNodes[currentSequence];
if (medium.Id != null)
{
options.mediaid = medium.Id;
}
// Check isnt blacklisted
if (blackList.BlackListed(options.mediaid))
{
Debug.WriteLine(String.Format("The File [{0}] has been blacklisted", options.mediaid), "Region - SetNextMediaNode");
// Increment and Loop
currentSequence++;
if (currentSequence >= options.mediaNodes.Count)
{
currentSequence = 0; //zero it
hasExpired = true; //we have expired (want to raise an expired event to the parent)
Debug.WriteLine("Media Expired:" + options.ToString() + " . Reached the end of the sequence. Starting from the beginning.", "Region - SetNextMediaNode");
DurationElapsedEvent();
// We want to continue on to show the next media (unless the duration elapsed event triggers a region change)
if (layoutExpired)
{
return(true);
}
}
}
else
{
validNode = true;
// New version has a different schema - the right way to do it would be to pass the <options> and <raw> nodes to
// the relevant media class - however I dont feel like engineering such a change so the alternative is to
// parse all the possible media type nodes here.
// Type and Duration will always be on the media node
options.FileType = medium.Type;
//TODO: Check the type of node we have, and make sure it is supported.
if (medium.Duration != -1)
{
options.Duration = medium.Duration;
}
else
{
options.Duration = 60;
System.Diagnostics.Trace.WriteLine("Duration is Empty, using a default of 60.",
"Region - SetNextMediaNode");
}
// We cannot have a 0 duration here... not sure why we would... but
if (options.Duration == 0 && options.FileType != "Video")
{
int emptyLayoutDuration = int.Parse(Settings.Default.emptyLayoutDuration.ToString());
options.Duration = (emptyLayoutDuration == 0) ? 10 : emptyLayoutDuration;
}
// There will be some stuff on option nodes
if (medium.Options != null)
{
options.direction = medium.Options.Direction;
// Add this to the options object
options.Dictionary.Add("direction", medium.Options.Direction);
options.Uri = medium.Options.Uri;
options.Dictionary.Add("Uri", medium.Options.Uri);
options.copyrightNotice = medium.Options.Copyright;
options.Dictionary.Add("copyrightNotice", medium.Options.Copyright);
options.scrollSpeed = medium.Options.ScrollSpeed;
if (medium.Options != null)
{
options.Dictionary.Add("ScrollSpeed",
(medium.Options.ScrollSpeed).ToString());
}
if (medium.Options.ScrollSpeed == -1)
{
System.Diagnostics.Trace.WriteLine("Non integer scrollSpeed in XLF",
"Region - SetNextMediaNode");
}
options.updateInterval = medium.Options.UpdateInterval;
if (medium.Options.UpdateInterval == -1)
{
System.Diagnostics.Trace.WriteLine("Non integer updateInterval in XLF",
"Region - SetNextMediaNode");
}
}
// And some stuff on Raw nodes
if (medium.Raw != null)
{
if (!String.IsNullOrEmpty(medium.Raw.Text))
{
options.text = medium.Raw.Text;
}
if (!String.IsNullOrEmpty(medium.Raw.Text))
{
options.documentTemplate = medium.Raw.DocumentTemplate;
}
if (!String.IsNullOrEmpty(medium.Raw.EmbedHtml))
{
options.text = medium.Raw.EmbedHtml;
}
if (!String.IsNullOrEmpty(medium.Raw.EmbedScript))
{
options.javaScript = medium.Raw.EmbedScript;
}
}
// Is this a file based media node?
if (options.FileType == "Video" || options.FileType == "flash" || options.FileType == "Image" || options.FileType == "powerpoint")
{
// Use the cache manager to determine if the file is valid
validNode = _cacheManager.IsValidPath(options.Uri);
}
}
if (numAttempts > options.mediaNodes.Count)
{
// There are no valid nodes in this region, so just signify that the region is ending, and show nothing.
System.Diagnostics.Trace.WriteLine("No Valid media nodes to display", "Region - SetNextMediaNode");
hasExpired = true;
return(false);
}
}
System.Diagnostics.Debug.WriteLine("New media detected " + options.FileType, "Region - SetNextMediaNode");
// Remove the old one if we have found a valid node - otherwise keep it
if ((validNode && playingSequence != -1) && playingSequence != currentSequence)
{
System.Diagnostics.Debug.WriteLine("Trying to dispose of the current media", "Region - SetNextMediaNode");
// Dispose of the current media
try
{
// media.AnimateAway(MediaCanvas);
ThreadPool.QueueUserWorkItem((r) =>
{
Thread.Sleep(2500);
if (media != null && media.Parent != null)
{
if (media.OldOne != null)
{
media.OldOne.AnimateAway(MediaCanvas);
}
}
else
{
if (media != null && media.OldOne != null)
{
media.OldOne.AnimateAway(MediaCanvas);
}
if (media != null)
{
media.AnimateAway(MediaCanvas);
}
}
});
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("No media to remove");
System.Diagnostics.Debug.WriteLine(ex.Message);
}
try
{
// Here we say that this media is expired
_stat.ToDate = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
// Record this stat event in the statLog object
_statLog.RecordStat(_stat);
}
catch
{
System.Diagnostics.Trace.WriteLine("No Stat record when one was expected", LogType.Error.ToString());
}
}
return(true);
}