protected override void OnItemRemoved(ExpressionParameter parameter)
{
ExpressionScope.OnParameterRemoved(parameter);
parameter.Collection = null;
base.OnItemRemoved(parameter);
ParametersDictionary.Remove(parameter.Name);
}
protected override void OnItemAdded(ExpressionParameter parameter)
{
base.OnItemAdded(parameter);
parameter.Collection = this;
ParametersDictionary.Add(parameter.Name, parameter);
ExpressionScope.OnParameterAdded(parameter);
}
internal static ExpressionScope Parse(string str)
{
var expressionScope = new ExpressionScope();
var split = str.Split(ScopeListSeparator, StringSplitOptions.RemoveEmptyEntries);
foreach (var parameter in split)
{
var colonIndex = parameter.IndexOf(':');
if (colonIndex == -1)
{
return(null);
}
var parameterName = parameter.Substring(0, colonIndex).Trim();
var parameterValue = parameter.Substring(colonIndex + 1).Trim();
expressionScope.Parameters.Add(new ExpressionParameter(parameterName, parameterValue));
}
return(expressionScope);
}
public void OnParameterValueChanged(ExpressionParameter expressionParameter, object oldValue, object newValue)
{
ExpressionScope.OnParameterValueChanged(expressionParameter, oldValue, newValue);
}
internal ExpressionParameterCollection(ExpressionScope expressionScope)
{
ExpressionScope = expressionScope;
}
public static void SetScope(DependencyObject element, ExpressionScope value)
{
element.SetValue(ScopeProperty, value);
}
public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
var strValue = value as string;
return(strValue == null ? null : ExpressionScope.Parse(strValue));
}
