IEnumerable <BlobViewModel> Bind(ModelBindingContext bindingContext)
{
var tempFileIds = GetValue(bindingContext, "TempFileId")?.Split('|').Trim().ToList();
var filenames = GetValue(bindingContext, "Filename")?.Split(',').Trim().ToList();
var itemIds = GetValue(bindingContext, "ItemId");
var urls = GetValue(bindingContext, "Url");
var result = new List <BlobViewModel>();
if (tempFileIds?.Any() == true)
{
foreach (var tempFileId in tempFileIds.Select((value, index) => new { value, index }))
{
var blobViewModel = new BlobViewModel
{
Action = GetValue(bindingContext, "Action")?.To <BlobViewModelAction>() ?? BlobViewModelAction.New,
Filename = filenames[tempFileId.index],
ItemId = itemIds,
TempFileId = tempFileId.value,
Url = urls,
};
blobViewModel.IsEmpty = blobViewModel.TempFileId.HasValue() ||
(blobViewModel.Filename.HasValue() && blobViewModel.Filename != Blob.EMPTY_FILE);
result.Add(blobViewModel);
}
}
return(result);
}
BlobViewModel Bind(ModelBindingContext bindingContext)
{
var result = new BlobViewModel
{
Action = GetValue(bindingContext, "Action")?.To <BlobViewModelAction>() ?? BlobViewModelAction.New,
Filename = GetValue(bindingContext, "Filename"),
ItemId = GetValue(bindingContext, "ItemId"),
TempFileId = GetValue(bindingContext, "TempFileId"),
Url = GetValue(bindingContext, "Url")
};
if (result.Action == BlobViewModelAction.New && result.TempFileId.IsEmpty())
{
return(null);
}
result.IsEmpty = result.TempFileId.HasValue() ||
(result.Filename.HasValue() && result.Filename != Blob.EMPTY_FILE);
return(result);
}
protected virtual IHtmlContent DoGenerate <TModel, TProperty>(IHtmlHelper html, object viewModel, Expression <Func <TModel, TProperty> > property, object htmlAttributes)
{
if (viewModel == null)
{
throw new ArgumentNullException(nameof(viewModel));
}
if (property == null)
{
throw new ArgumentNullException(nameof(property));
}
PropertyInfo = property.GetProperty();
Blob = PropertyInfo.GetValue(viewModel) as BlobViewModel ?? new BlobViewModel();
var result = new HtmlContentBuilder();
result.AppendHtmlLine($@"
<div class=""file-upload"">
<span class=""current-file"" aria-label=""Preview the file""{" style=\"display:none\"".OnlyWhen(Blob.IsEmpty)}>
<a target=""_blank"" href=""{Blob.Url?.HtmlEncode()}"">{Blob.Filename.OrEmpty().HtmlEncode()}</a>
</span>
<label for={GetId("fileInput")} hidden>HiddenLabel</label>
{html.TextBox(PropertyInfo.Name, string.Empty, string.Empty, HiddenFieldSettings).GetString()}
<input type=""file"" id={GetId("fileInput")} name=""files"" {GetHtmlAttributes(htmlAttributes)}/>
{GetHiddenInput(x => x.Action)}
{GetHiddenInput(x => x.TempFileId)}
{GetHiddenInput(x => x.Filename)}
{GetHiddenInput(x => x.ItemId)}
{GetHiddenInput(x => x.Url)}
{GetHiddenInput(x => x.IsEmpty)}
<div class=""progress-bar"" role=""progressbar""></div>
<span class=""delete-file fas fa-times btn"" style=""display: none""></span>
</div>
");
return(result);
}