/// <summary>
/// Inserts an IMidiMessage at the specified position in absolute ticks.
/// </summary>
/// <param name="position">
/// The position in the Track in absolute ticks in which to insert the
/// IMidiMessage.
/// </param>
/// <param name="message">
/// The IMidiMessage to insert.
/// </param>
public void Insert(int position, IMidiMessage message)
{
#region Require
if (position < 0)
{
throw new ArgumentOutOfRangeException("position", position,
"IMidiMessage position out of range.");
}
else if (message == null)
{
throw new ArgumentNullException("message");
}
#endregion
MidiEvent newMidiEvent = new MidiEvent(this, position, message);
if (head == null)
{
head = newMidiEvent;
tail = newMidiEvent;
}
else if (position >= tail.AbsoluteTicks)
{
newMidiEvent.Previous = tail;
tail.Next = newMidiEvent;
tail = newMidiEvent;
endOfTrackMidiEvent.SetAbsoluteTicks(Length);
endOfTrackMidiEvent.Previous = tail;
}
else
{
MidiEvent current = head;
while (current.AbsoluteTicks < position)
{
current = current.Next;
}
newMidiEvent.Next = current;
newMidiEvent.Previous = current.Previous;
if (current.Previous != null)
{
current.Previous.Next = newMidiEvent;
}
else
{
head = newMidiEvent;
}
current.Previous = newMidiEvent;
}
count++;
#region Invariant
AssertValid();
#endregion
}
public void Move(MidiEvent e, int newPosition)
{
#region Require
if (e.Owner != this)
{
throw new ArgumentException("MidiEvent does not belong to this Track.");
}
else if (newPosition < 0)
{
throw new ArgumentOutOfRangeException("newPosition");
}
else if (e == endOfTrackMidiEvent)
{
throw new InvalidOperationException(
"Cannot move end of track message. Use the EndOfTrackOffset property instead.");
}
#endregion
MidiEvent previous = e.Previous;
MidiEvent next = e.Next;
if (e.Previous != null && e.Previous.AbsoluteTicks > newPosition)
{
e.Previous.Next = e.Next;
if (e.Next != null)
{
e.Next.Previous = e.Previous;
}
while (previous != null && previous.AbsoluteTicks > newPosition)
{
next = previous;
previous = previous.Previous;
}
}
else if (e.Next != null && e.Next.AbsoluteTicks < newPosition)
{
e.Next.Previous = e.Previous;
if (e.Previous != null)
{
e.Previous.Next = e.Next;
}
while (next != null && next.AbsoluteTicks < newPosition)
{
previous = next;
next = next.Next;
}
}
if (previous != null)
{
previous.Next = e;
}
if (next != null)
{
next.Previous = e;
}
e.Previous = previous;
e.Next = next;
e.SetAbsoluteTicks(newPosition);
if (newPosition < head.AbsoluteTicks)
{
head = e;
}
if (newPosition > tail.AbsoluteTicks)
{
tail = e;
}
endOfTrackMidiEvent.SetAbsoluteTicks(Length);
endOfTrackMidiEvent.Previous = tail;
#region Invariant
AssertValid();
#endregion
}