///// <summary>
///// True if this is a leaf node,
///// *including if it refers to itself*,
///// but NOT if it is part of a cycle larger than just itself
///// </summary>
///// <returns></returns>
//public bool IsLeaf()
//{
// // bit hacky, but we might want to force
// // a saying to be a transition saying
// // even if it has children
// if (this.IsForcedLeaf)
// {
// return true;
// }
// return
// (this.NextSaying == null || this.NextSaying == this)
// && (this.YesSaying == null || this.YesSaying == this)
// && (this.NoSaying == null || this.NoSaying == this);
//}
/// <summary>
/// For convenience,
/// walk down the tree from this node
/// and give every leaf branch found the given callback
/// </summary>
/// <param name="callback"></param>
public void GiveAllEndingsCallback(ISayingCallback callback)
{
bool foundAnyChildren = false;
if (this.NextSaying != null && this.NextSaying != this)
{
this.NextSaying.GiveAllEndingsCallback(callback);
foundAnyChildren = true;
}
if (this.YesSaying != null && this.YesSaying != this)
{
this.YesSaying.GiveAllEndingsCallback(callback);
foundAnyChildren = true;
}
if (this.NoSaying != null && this.NoSaying != this)
{
this.NoSaying.GiveAllEndingsCallback(callback);
foundAnyChildren = true;
}
if (!foundAnyChildren)
{
this.sayingCallback = callback;
}
}
public Saying(string text, Font font, ISayingCallback callback)
{
this.Text = text;
this.Font = font;
this.sayingCallback = callback;
}