private void EvaluateDependency(Dependency dependencyToEvalulate, IEvaluationContext context)
{
try
{
if (context.Evaluate(dependencyToEvalulate.Check))
{
this.pictureBox1.Image = Resources.Checked;
this.llDownloadUrl.Visible = false;
this.lblExplanation.Visible = false;
this.Height = 25;
this.lblTitle.ForeColor = this.titleSavedColor;
this.lblTitle.Top = 4;
this.DependencyStatus = true;
}
else
{
this.pictureBox1.Image = Resources.Unchecked;
this.pictureBox1.Top = 10;
this.lblTitle.ForeColor = Color.Red;
this.DependencyStatus = false;
this.lblExplanation.Visible = true;
this.llDownloadUrl.Visible = true;
}
}
catch (Exception exception)
{
this.pictureBox1.Image = Resources.Unchecked;
this.pictureBox1.Top = 10;
this.lblTitle.ForeColor = Color.Red;
this.lblExplanation.Visible = true;
this.DependencyStatus = false;
this.llDownloadUrl.Visible = false;
string errorMessage =
string.Format(
"'{0}' dependency could not be verified. Install components above this one first.",
dependencyToEvalulate.Title);
this.lblExplanation.Text = errorMessage;
this.toolTip1.SetToolTip(this.lblExplanation, errorMessage);
this.errorService.LogError(errorMessage, exception);
}
}
private bool Interpret(PropExpression e, IEvaluationContext context)
{
if (e is PropIdentifier)
{
var pi = (PropIdentifier)e;
return(context.Evaluate(context[pi.Name]));
}
if (e is PropConjunction)
{
var pc = (PropConjunction)e;
return(this.Interpret(pc.Left, context) && this.Interpret(pc.Right, context));
}
if (e is PropDisjunction)
{
var pd = (PropDisjunction)e;
return(this.Interpret(pd.Left, context) || this.Interpret(pd.Right, context));
}
if (e is PropNegation)
{
var pn = (PropNegation)e;
return(!this.Interpret(pn.Inner, context));
}
throw new NotImplementedException();
}
