private void Expand(HierarchyViewModel hierarchy, HierarchyPath hierarchyPath, List <LoadCategoriesInstruction> loadCategoriesInstructions)
{
CatalogItemViewModel catalog = hierarchy.FirstOrDefault(cata => cata.Catalog.Code.EqualsOrdinalIgnoreCase(hierarchyPath.Catalog));
if (catalog != null)
{
loadCategoriesInstructions.Add(
new LoadCategoriesInstruction(
catalog.Catalog.CatalogId,
hierarchyPath.TargetCatalog ? CatalogHierarchyServices.RootCategoryCode : hierarchyPath.Categories.Last(),
this.CreateAppender(hierarchy, hierarchyPath)
)
);
}
}
private HierarchyItemViewModel FindItem(HierarchyViewModel hierarchy, HierarchyPath hierarchyPath)
{
HierarchyItemViewModel item = hierarchy.FirstOrDefault(cata => cata.Catalog.Code.EqualsOrdinalIgnoreCase(hierarchyPath.Catalog));
if (item != null)
{
foreach (String categoryCode in hierarchyPath.Categories)
{
item = item.Categories.FirstOrDefault(cate => cate.Category.Code.EqualsOrdinalIgnoreCase(categoryCode));
if (item == null)
{
break;
}
}
}
return(item);
}
private void EnsurePath(HierarchyViewModel hierarchy, HierarchyPath hierarchyPath, List <LoadCategoriesInstruction> loadCategoriesInstructions)
{
CatalogItemViewModel catalog = hierarchy.FirstOrDefault(cata => cata.Catalog.Code.EqualsOrdinalIgnoreCase(hierarchyPath.Catalog));
if (catalog != null)
{
loadCategoriesInstructions.AddRange(
hierarchyPath.Categories
.Select((c, i) => new { Code = c, Index = i })
.Where(o => this.FindItem(hierarchy, new HierarchyPath(catalog.Catalog.Code, hierarchyPath.Categories.Take(o.Index + 1))) == null)
.Select(
o => new LoadCategoriesInstruction(
catalog.Catalog.CatalogId,
o.Index == 0 ? CatalogHierarchyServices.RootCategoryCode : hierarchyPath.Categories.ElementAtOrDefault(o.Index - 1),
this.CreateAppender(hierarchy, new HierarchyPath(catalog.Catalog.Code, hierarchyPath.Categories.Take(o.Index)))
)
)
);
}
}
private CatalogItemViewModel GetCatalog(HierarchyViewModel hierarchy, CategoryItemViewModel category)
{
return(hierarchy.FirstOrDefault(cata => this.Contains(cata.Categories, category)));
}
