private bool CalculateIsActiveStatus(Dictionary <string, string> variables, string expr)
{
// Update selector active status. Note that the first selector cannot use variables (there are none),
// and each subsequent selector can only reference variables from previous selectors.
var normVars = this.CreateBooleanNormalizedList(variables);
var expandedExpr = TemplateExpander.ExpandTemplate(normVars, expr, null);
expandedExpr = TemplateExpander.ReplaceUnresolved(expandedExpr, "false");
return(ExpressionEvaluator.Evaluate(expandedExpr));
}
internal void Expand(Dictionary <string, string> variables)
{
this.unresolvedVariables.Clear();
this.Content = TemplateExpander.ExpandTemplate(variables, this.ContentTemplate, this.unresolvedVariables);
this.FileName = TemplateExpander.ExpandTemplate(variables, this.FileNameTemplate, this.unresolvedVariables);
this.OnPropertyChanged("UnresolvedVariables");
this.OnPropertyChanged("UnresolvedVariablesList");
this.OnPropertyChanged("IsResolved");
this.OnPropertyChanged("IsIncomplete");
}
internal void NotifySelectionChanged()
{
// The first round is used to determine which selectors are active now.
var variables = new Dictionary <string, string>();
foreach (var selector in this.Selectors)
{
// Update selector active status. Note that the first selector cannot use variables (there are none),
// and each subsequent selector can only reference variables from previous selectors.
selector.IsActive = this.CalculateIsActiveStatus(variables, selector.IsActiveExpr ?? "false");
// Inactive selector cannot influence variables.
if (!selector.IsActive)
{
continue;
}
var v = selector.SelectedChoice;
if (v != null)
{
foreach (var variable in v.Variables)
{
if (variable.Value.IsExpression)
{
variables[variable.Key] = TemplateExpander.ExpandTemplate(
variables,
variable.Value.Value,
null);
}
else
{
variables[variable.Key] = variable.Value.Value;
}
}
}
}
foreach (var tpl in this.Templates)
{
tpl.IsActive = this.CalculateIsActiveStatus(variables, tpl.IsActiveExpr);
tpl.Expand(variables);
}
if (this.SelectedTemplate == null || !this.SelectedTemplate.IsActive)
{
this.SelectedTemplate = this.Templates.FirstOrDefault();
}
this.saveAllCommand.RaiseCanExecuteChanged();
this.runCommand.RaiseCanExecuteChanged();
}
