/// <summary>
/// Adds continuations to analysis tasks so that the view model's properties are updated when
/// each task has results available for display.
/// </summary>
/// <param name="tasks">The task record</param>
void AddButtonContinuations(AnalysisTasks tasks)
{
AddButtonContinuation(tasks.LoadNyseData,
t => { NyseMarketData = t.Result; });
AddButtonContinuation(tasks.LoadNasdaqData,
t => { NasdaqMarketData = t.Result; });
AddButtonContinuation(tasks.LoadFedHistoricalData,
t => { FedHistoricalData = t.Result; });
AddButtonContinuation(tasks.MergeMarketData,
t => { MergedMarketData = t.Result; });
AddButtonContinuation(tasks.NormalizeHistoricalData,
t => { NormalizedHistoricalData = t.Result; });
AddButtonContinuation(tasks.NormalizeMarketData,
t => { NormalizedMarketData = t.Result; });
AddButtonContinuation(tasks.AnalyzeHistoricalData,
t => { AnalyzedHistoricalData = t.Result; });
AddButtonContinuation(tasks.AnalyzeMarketData,
t => { AnalyzedStockData = t.Result; });
AddButtonContinuation(tasks.ModelHistoricalData,
t => { ModeledHistoricalData = t.Result; });
AddButtonContinuation(tasks.ModelMarketData,
t => { ModeledMarketData = t.Result; });
AddButtonContinuation(tasks.CompareModels,
t =>
{
this.Recommendation = t.Result;
this.StatusTextBoxText =
(this.Recommendation == null)
? "Canceled"
: this.Recommendation.Value;
this.ModelState = State.Ready;
});
tasks.ErrorHandler.ContinueWith(
t =>
{
if (t.Status == TaskStatus.Faulted)
{
this.StatusTextBoxText = "Error";
}
this.ModelState = State.Ready;
}, TaskScheduler.FromCurrentSynchronizationContext());
}
void OnRequestCalculate()
{
// Initialize the result properties to null
ResetResultProperties();
// Place the view model into calculation mode
ModelState = State.Calculating;
// Update the property containing the status text
StatusTextBoxText = "...calculating...";
// Start the analysis
AnalysisTasks tasks = engine.DoAnalysisParallel();
// Add continuations so that view model properties are updated when each subtask completes
AddButtonContinuations(tasks);
}
