/// <summary>
/// Creates the or update array map.
/// </summary>
protected virtual void CreateOrUpdateArrayMap(object viewModel, PropertyInfo parentProperty, ref ViewModelMapNode map)
{
if (map == null)
{
map = new ViewModelMapArrayNode();
}
if (map is ViewModelMapArrayNode)
{
var itemValues = ((IEnumerable)viewModel).OfType<object>().ToList();
var typedMap = (ViewModelMapArrayNode)map;
// if the collection can be compared and updated by some property key, do it, otherwise replace the collection contents;
// the synchronization can only occur when there is a key map or when the collection is empty
var keyName = ResolveCollectionKeyName(parentProperty);
if (!string.IsNullOrEmpty(keyName) && typedMap.Items.Count == typedMap.KeyMap.Count)
{
SynchronizeCollections(typedMap, itemValues, keyName);
}
else
{
// replace collection contents
typedMap.Items.Clear();
typedMap.Items.AddRange(itemValues.Select(i => CreateMap(i, null)));
typedMap.KeyMap.Clear();
}
}
else
{
throw new Exception(string.Format("The viewModel is a collection or array but the {0} was expected.", map.GetType()));
}
}
/// <summary>
/// Applies the specified view model contents to the specified view model map.
/// </summary>
public virtual void CreateOrUpdateMap(object viewModel, PropertyInfo parentProperty, ref ViewModelMapNode map)
{
if (IsPrimitiveValue(viewModel))
{
// view model is primitive type value
CreateOrUpdateConstantMap(viewModel, ref map);
}
else if (IsCollectionOrArray(viewModel))
{
// view model is a collection or an array
CreateOrUpdateArrayMap(viewModel, parentProperty, ref map);
}
else
{
// view model is an object with properties
CreateOrUpdatePropertyMap(viewModel, parentProperty, ref map);
}
}
/// <summary>
/// Creates the or update property map.
/// </summary>
protected virtual void CreateOrUpdatePropertyMap(object viewModel, PropertyInfo parentProperty, ref ViewModelMapNode map)
{
if (map == null)
{
map = new ViewModelMapObjectNode();
}
if (map is ViewModelMapObjectNode)
{
// get property values
var propertyMaps = viewModel.GetType().GetProperties().Where(p => p.CanRead).Select(p => new
{
Property = p,
Name = p.Name,
Value = p.GetValue(viewModel)
}).ToList();
// add or update properties in the object
var typedMap = (ViewModelMapObjectNode)map;
foreach (var propertyMap in propertyMaps)
{
if (typedMap.Properties.ContainsKey(propertyMap.Name))
{
var currentValue = typedMap.Properties[propertyMap.Name];
CreateOrUpdateMap(propertyMap.Value, propertyMap.Property, ref currentValue);
typedMap.Properties[propertyMap.Name] = currentValue;
}
else
{
typedMap.Properties[propertyMap.Name] = CreateMap(propertyMap.Value, propertyMap.Property);
}
}
}
else
{
throw new Exception(string.Format("The viewModel is an object but the {0} was expected.", map.GetType()));
}
}
/// <summary>
/// Creates the or update constant map.
/// </summary>
protected virtual void CreateOrUpdateConstantMap(object viewModel, ref ViewModelMapNode map)
{
if (map == null)
{
map = new ViewModelMapPrimitiveNode() { Value = viewModel };
}
else if (map is ViewModelMapPrimitiveNode)
{
((ViewModelMapPrimitiveNode)map).Value = viewModel;
}
else
{
throw new Exception(string.Format("The viewModel is primitive value but but {0} was expected.", map.GetType()));
}
}
