/// <summary>
/// Determines if a given <see cref="Media"/> can be accepted by the channel,
/// which it can if it implements interface <see cref="AbstractTextMedia"/>
/// </summary>
/// <param name="m">The given media</param>
/// <returns>A <see cref="bool"/> indicating if the given media can be accepted</returns>
public override bool CanAccept(urakawa.media.Media m)
{
if (!base.CanAccept(m))
{
return(false);
}
if (m is AbstractTextMedia)
{
return(true);
}
#if ENABLE_SEQ_MEDIA
if (m is SequenceMedia)
{
foreach (Media sm in ((SequenceMedia)m).ChildMedias.ContentsAs_Enumerable)
{
if (!(sm is AbstractTextMedia))
{
return(false);
}
}
return(true);
}
#endif //ENABLE_SEQ_MEDIA
return(false);
}
/// <summary>
/// Pre-visit action: If <see cref="Media"/> is present in <see cref="Channel"/> <see cref="ChannelToClear"/>,
/// this is removed and the child <see cref="TreeNode"/>s are not visited
/// </summary>
/// <param name="node">The <see cref="TreeNode"/> to visit</param>
/// <returns>
/// <c>false</c> if <see cref="Media"/> is found if <see cref="Channel"/> <see cref="ChannelToClear"/>,
/// <c>false</c> else
/// </returns>
public bool PreVisit(TreeNode node)
{
ChannelsProperty chProp = node.GetChannelsProperty();
if (chProp != null)
{
urakawa.media.Media m = null;
//try
//{
m = chProp.GetMedia(ChannelToClear);
// }
// catch (ChannelDoesNotExistException ex)
// {
//#if DEBUG
// Debugger.Break();
//#endif
// return false;
// }
if (m != null)
{
chProp.SetMedia(ChannelToClear, null);
}
}
return(true);
}