/// <summary>
/// When the sub-algorithm is completed this reverts us to listening to local progress
/// </summary>
/// <param name="childAlgorithm"></param>
protected void StopListenToProgress(AlgorithmBase childAlgorithm)
{
ValidateArg.IsNotNull(childAlgorithm, "childAlgorithm");
childAlgorithm.ProgressChanged -= NotifyProgressChanged;
progressRatio = stageEndRatio;
stageStartRatio = 0;
stageEndRatio = 1;
}
/// <summary>
/// Runs the child algorithm and listens for progress changes.
/// </summary>
protected void RunChildAlgorithm(AlgorithmBase childAlgorithm, double stageRatio)
{
ValidateArg.IsNotNull(childAlgorithm, "childAlgorithm");
try
{
StartListenToProgress(childAlgorithm, stageRatio);
childAlgorithm.Run();
}
finally
{
StopListenToProgress(childAlgorithm);
}
}
/// <summary>
/// When starting a sub-algorithm start listening to its progress, transforming
/// the progressRatio it reports (between 0 and 1) to between progressRatio and progressRatio+stageRatio
/// </summary>
/// <param name="childAlgorithm">The child algorithm.</param>
/// <param name="stageRatio">The fraction of time the child algorithm will take of the parent algorithm.</param>
protected void StartListenToProgress(AlgorithmBase childAlgorithm, double stageRatio)
{
ValidateArg.IsNotNull(childAlgorithm, "childAlgorithm");
childAlgorithm.ProgressChanged += NotifyProgressChanged;
stageStartRatio = progressRatio;
stageEndRatio = progressRatio + stageRatio;
}