/// <summary>
/// Performs the disposal.
/// </summary>
protected override void Dispose(bool disposing)
{
if (disposing)
{
try
{
_media.DurationElapsedEvent -= media_DurationElapsedEvent;
_media.Dispose();
_media = null;
Debug.WriteLine("Media Disposed by Region", "Region - Dispose");
}
catch (Exception ex)
{
Trace.WriteLine(new LogMessage("Region - Dispose", "Unable to dispose media. Ex = " + ex.Message), LogType.Audit.ToString());
}
finally
{
if (_media != null)
_media = null;
}
}
base.Dispose(disposing);
}
/// <summary>
/// Start the provided media
/// </summary>
/// <param name="media"></param>
private void StartMedia(Media media)
{
Trace.WriteLine(new LogMessage("Region - StartMedia", "Starting media"), LogType.Audit.ToString());
media.RenderMedia();
Controls.Add(media);
}
/// <summary>
/// Stop the provided media
/// </summary>
private void StopMedia(Media media)
{
Trace.WriteLine(new LogMessage("Region - Stop Media", "Stopping media"), LogType.Audit.ToString());
// Hide the media
media.Hide();
// Remove the controls
Controls.Remove(media);
// Dispose of the current media
try
{
// Dispose of the media
media.Dispose();
}
catch (Exception ex)
{
Trace.WriteLine(new LogMessage("Region - Stop Media", "Unable to dispose. Ex = " + ex.Message), LogType.Audit.ToString());
}
}
///<summary>
/// Evaulates the change in options
///</summary>
private void EvalOptions()
{
// First time
bool initialMedia = (_currentSequence == -1);
if (initialMedia)
{
// Evaluate the width, etc
Location = new System.Drawing.Point(_options.left, _options.top);
Size = new System.Drawing.Size(_options.width, _options.height);
}
// Try to populate a new media object for this region
Media newMedia = new Media(0, 0, 0, 0);
// Loop around trying to start the next media
bool startSuccessful = false;
int countTries = 0;
while (!startSuccessful)
{
// If we go round this the same number of times as media objects, then we are unsuccessful and should exception
if (countTries >= _options.mediaNodes.Count)
throw new ArgumentOutOfRangeException("Unable to set and start a media node");
// Lets try again
countTries++;
// Store the current sequence
int temp = _currentSequence;
// Set the next media node for this panel
if (!SetNextMediaNodeInOptions())
{
// For some reason we cannot set a media node... so we need this region to become invalid
_hasExpired = true;
DurationElapsedEvent();
return;
}
// If the sequence hasnt been changed, OR the layout has been expired
// there has been no change to the sequence, therefore the media we have already created is still valid
// or this media has actually been destroyed and we are working out way out the call stack
if (_layoutExpired || (_currentSequence == temp))
return;
// Store the Current Index
_options.CurrentIndex = _currentSequence;
// See if we can start the new media object
try
{
newMedia = CreateNextMediaNode(_options);
}
catch (Exception ex)
{
Trace.WriteLine(new LogMessage("Region - Eval Options", "Unable to create new " + _options.type + " object: " + ex.Message), LogType.Error.ToString());
// Try the next node
startSuccessful = false;
continue;
}
// First thing we do is stop the current stat record
if (!initialMedia)
CloseCurrentStatRecord();
// Start the new media
try
{
StartMedia(newMedia);
}
catch (Exception ex)
{
Trace.WriteLine(new LogMessage("Region - Eval Options", "Unable to start new " + _options.type + " object: " + ex.Message), LogType.Error.ToString());
startSuccessful = false;
continue;
}
startSuccessful = true;
// Remove the old media
if (!initialMedia)
{
StopMedia(_media);
_media = null;
}
// Change the reference
_media = newMedia;
// Open a stat record
OpenStatRecordForMedia();
}
}
