/// <summary>
/// If the property name is one that is implicitly managed here, return that.
/// Otherwise delegate this request to the backing property.
/// </summary>
public override Task <string> GetUnevaluatedPropertyValueAsync(string propertyName)
{
if (_propertyValues.TryGetValue(propertyName, out string unevaluatedPropertyValue))
{
return(Task.FromResult(unevaluatedPropertyValue));
}
return(DelegatedProperties.GetUnevaluatedPropertyValueAsync(propertyName));
}
/// <summary>
/// If the property name is one that is implicitly managed here, remove it from
/// the value map. Otherwise delegate this request to the backing property.
/// </summary>
public override Task DeletePropertyAsync(string propertyName, IReadOnlyDictionary <string, string> dimensionalConditions = null)
{
if (_propertyValues.TryRemove(propertyName, out string unevaluatedPropertyValue))
{
return(Task.CompletedTask);
}
return(DelegatedProperties.DeletePropertyAsync(propertyName, dimensionalConditions));
}
/// <summary>
/// If a property exists in the delegated properties object, then pass the set
/// through (overwrite). Otherwise manage the value in memory in this properties
/// object.
/// </summary>
public override async Task SetPropertyValueAsync(string propertyName, string unevaluatedPropertyValue, IReadOnlyDictionary <string, string> dimensionalConditions = null)
{
var propertyNames = await DelegatedProperties.GetPropertyNamesAsync().ConfigureAwait(false);
if (propertyNames.Contains(propertyName))
{
// overwrite the property if it exists
await DelegatedProperties.SetPropertyValueAsync(propertyName, unevaluatedPropertyValue, dimensionalConditions).ConfigureAwait(false);
}
else
{
// store the property in this property object, not in the project file
_propertyValues[propertyName] = unevaluatedPropertyValue;
}
}
