public IHtmlContent Generate <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));
}
var propertyInfo = property.GetProperty();
var propertyName = propertyInfo.Name;
var blob = propertyInfo.GetValue(viewModel) as BlobViewModel ?? new BlobViewModel();
var result = new HtmlContentBuilder();
string getId(string prop) => $"\"{propertyName}_{prop}\"";
string GetHiddenInput(Expression <Func <BlobViewModel, object> > expression)
{
var propName = expression.GetProperty().Name;
var id = getId(propName);
var func = expression.Compile();
return($@"<input type=""hidden"" id={id} name={id} class=""{propName}"" value=""{func(blob)}"" />");
}
result.AppendHtmlLine($@"
<div class=""file-upload"">
<span class=""current-file"" aria-label=""Preview the file""{" style=\"display:none\"".OnlyWhen(blob.IsEmpty)}>
<a target=""_blank"" href=""{blob.Url?.HtmlEncode()}"">{blob.Filename.OrEmpty().HtmlEncode()}</a>
</span>
<label for={getId("fileInput")} hidden>HiddenLabel</label>
{html.TextBox(propertyName, "value".OnlyWhen(blob.HasValue), string.Empty, HiddenFieldSettings).GetString()}
<input type=""file"" id={getId("fileInput")} name=""files"" {OliveMvcExtensions.ToHtmlAttributes(htmlAttributes)}/>
{GetHiddenInput(x => x.Action)}
{GetHiddenInput(x => x.TempFileId)}
{GetHiddenInput(x => x.Filename)}
{GetHiddenInput(x => x.ItemId)}
{GetHiddenInput(x => x.Url)}
{GetHiddenInput(x => x.IsEmpty)}
<div class=""progress-bar"" role=""progressbar""></div>
<span class=""delete-file fa fa-remove btn"" style=""display: none""></span>
</div>
");
return(result);
}
public IHtmlContent Generate <TModel, TProperty>(IHtmlHelper html, object model, Expression <Func <TModel, TProperty> > property, object htmlAttributes)
{
var propertyInfo = property.GetProperty();
var blob = propertyInfo.GetValue(model) as Blob ?? Blob.Empty();
var value = html.ViewContext.HttpContext.Request.HasFormContentType ?
html.ViewContext.HttpContext.Request.Form[propertyInfo.Name] :
Microsoft.Extensions.Primitives.StringValues.Empty;
if (value == "KEEP")
{
var itemProperty = model.GetType().GetProperty("Item");
var item = itemProperty.GetValue(model);
var originalPropertyInfo = item.GetType().GetProperty(propertyInfo.Name);
blob = originalPropertyInfo.GetValue(item) as Blob ?? Blob.Empty();
}
// Note: If this method is called with an IEnumerable<Blob> property,
// then the existing data will never be loaded.
var result = new HtmlContentBuilder();
result.AppendHtmlLine("<div class=\"file-upload\">");
result.AppendHtmlLine($"<span class=\"current-file\"{" style=\"display:none\"".OnlyWhen(blob.IsEmpty())}>" +
$"<a target=\"_blank\" href=\"{blob.Url().HtmlEncode()}\">{blob.FileName.OrEmpty().HtmlEncode()}</a></span>");
result.AppendHtmlLine($"<input type=\"file\" name=\"files\" {OliveMvcExtensions.ToHtmlAttributes(htmlAttributes)}/>");
// For validation to work, this works instead of Hidden.
if (value.ToString().IsEmpty() && blob.HasValue())
{
value = "KEEP";
}
result.AppendHtml(html.TextBox(propertyInfo.Name, value.OrEmpty(), string.Empty,
new { tabindex = "-1", style = "width:1px; height:0; border:0; padding:0; margin:0;", @class = "file-id", autocomplete = "off" }));
result.AppendHtmlLine("<div class=\"progress-bar\" role=\"progressbar\"></div>");
result.AppendHtmlLine("<span class=\"delete-file fa fa-remove btn\" style=\"display: none\"></span>");
result.AppendHtmlLine("</div>");
return(result);
}
public HtmlString Render()
{
if (Paging.PageSize == null || Paging.TotalItemsCount == 0)
{
return(null);
}
if (ListPagination.DisplayForSinglePage == false && Paging.LastPage == 1)
{
return(null);
}
FindBoundaries();
var r = new StringBuilder();
if (ListPagination.WrapperCssClass.HasValue())
{
r.AppendLine($"<div class=\"{ListPagination.WrapperCssClass}\">");
}
r.AddFormattedLine("<ul{0}>", OliveMvcExtensions.ToHtmlAttributes(HtmlAttributes));
var isFirst = Paging.CurrentPage == 1;
var isLast = Paging.CurrentPage == Paging.LastPage;
// add first page control
if (Paging.ShowFirstLastLinks)
{
AddPaginationControl(r, Paging.FirstText, "First page", Paging.CurrentPage == 1, 1);
}
// add previous page control
if (Paging.ShowPreviousNextLinks)
{
var previousPage = isFirst ? 1 : Paging.CurrentPage - 1;
AddPaginationControl(r, Paging.PreviousText, "Previous page", isFirst, previousPage);
}
for (var i = Start; i <= End; i++)
{
r.AppendFormat("<li {0}>", " class=\"active\"".OnlyWhen(i == Paging.CurrentPage));
r.AddFormattedLine("<a {0}>{1}</a></li>", GetLinkAttributes(i), i);
}
// add next page control
if (Paging.ShowPreviousNextLinks)
{
var nextPage = isLast ? Paging.LastPage : Paging.CurrentPage + 1;
AddPaginationControl(r, Paging.NextText, "Next page", isLast, nextPage);
}
// add last page control
if (Paging.ShowFirstLastLinks)
{
AddPaginationControl(r, Paging.LastText, "Last page", isLast, Paging.LastPage);
}
r.AppendLine("</ul>");
r.AppendLineIf("</div>", ListPagination.WrapperCssClass.HasValue());
return(new HtmlString(r.ToString()));
}
protected virtual string GetHtmlAttributes(object htmlAttributes) => OliveMvcExtensions.ToHtmlAttributes(htmlAttributes);
public IHtmlContent Generate <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));
}
var propertyInfo = property.GetProperty();
var propertyName = propertyInfo.Name;
var blob = propertyInfo.GetValue(viewModel) as Blob ?? Blob.Empty();
var action = html.Request().HasFormContentType ? html.Request().Form[propertyName] : StringValues.Empty;
if (action == "KEEP")
{
blob = GetOldValue(viewModel, propertyName) ?? blob;
}
var result = new HtmlContentBuilder();
// For validation to work, this works instead of Hidden.
if (action.ToString().IsEmpty() && blob.HasValue())
{
action = "KEEP";
}
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=""{propertyName}_fileInput"" hidden>HiddenLabel</label>
<input type=""file"" id=""{propertyName}_fileInput"" name=""files"" {OliveMvcExtensions.ToHtmlAttributes(htmlAttributes)}/>
{html.TextBox(propertyName, action.OrEmpty(), string.Empty, HiddenFieldSettings).GetString()}
<div class=""progress-bar"" role=""progressbar""></div>
<span class=""delete-file fa fa-remove btn"" style=""display: none""></span>
</div>
");
return(result);
}