private object getDataContextValue(object dataContext, string modelFieldName)
{
if (dataContext == null)
{
throw new Exception($"Error accessing [field: {modelFieldName}]. DataContext special field in model is null");
}
var fieldPath = new model.ModelFieldNamePathInfo(modelFieldName);
if (dataContext is lib.BindableDynamicDictionary dynDict)
{
if (!dynDict.HasKey(fieldPath.Current))
{
throw new Exception($"Field [{fieldPath.Current}] does not exist on DataContext object");
}
var val = dynDict[fieldPath.Current];
if (fieldPath.ChildPath.Length > 0)
{
return(getDataContextValue(val, fieldPath.ChildPath));
}
else
{
return(val);
}
}
else
{
Type dcType = dataContext.GetType();
var prop = dcType.GetProperty(fieldPath.Current);
if (prop == null)
{
throw new Exception(
$"Field [{fieldPath.Current}] does not exist on DataContext object of [type: {dcType.Name}]");
}
var val = prop.GetValue(dataContext);
if (fieldPath.ChildPath.Length > 0)
{
if (val == null)
{
// warn that we have a child path but a parent is null
log.Warn($"DataContext warning. Child Path found [FullPath: {modelFieldName}] but current [Path: {fieldPath.Current}] is null. Would not be able to find [child path: {fieldPath.ChildPath}] while parent is null.");
}
return(getDataContextValue(val, fieldPath.ChildPath));
}
else
{
return(val);
}
}
}
private void setDataContextValue(object dataContext, string modelFieldName, object val)
{
var fieldPath = new model.ModelFieldNamePathInfo(modelFieldName);
if (fieldPath.ChildPath.Length > 0)
{
if (dataContext is lib.BindableDynamicDictionary dyncDict)
{
// dynDict must contain this part of the path, because it's a path
if (!dyncDict.HasKey(fieldPath.Current))
{
throw new Exception($"Field [{fieldPath.Current}] does not exist on DataContext object");
}
var currentPathVal = dyncDict[fieldPath.Current];
setDataContextValue(currentPathVal, fieldPath.ChildPath, val);
}
else
{
Type dcType = dataContext.GetType();
var prop = dcType.GetProperty(fieldPath.Current);
if (prop == null)
{
throw new Exception(
$"Field [{fieldPath.Current}] does not exist on DataContext object of [type: {dcType.Name}]");
}
var currentPathVal = prop.GetValue(dataContext);
setDataContextValue(currentPathVal, fieldPath.ChildPath, val);
}
}
else
{
// no child path so do the normal
if (dataContext is lib.BindableDynamicDictionary dynDict)
{
dynDict[fieldPath.Current] = val;
}
else
{
Type dcType = dataContext.GetType();
var prop = dcType.GetProperty(fieldPath.Current);
if (prop == null)
{
throw new Exception(
$"Field [{fieldPath.Current}] does not exist on DataContext object of [type: {dcType.Name}]");
}
prop.SetValue(dataContext, val);
}
}
}
