internal static void CollectionTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput, TemplateHelpers.TemplateHelperDelegate templateHelper)
{
ViewDataDictionary viewData = html.ViewData;
object? model = viewData.ModelMetadata.Model;
if (model is null)
{
return;
}
IEnumerable collection = model as IEnumerable
?? throw new InvalidOperationException($"The Collection template was used with an object of type '{model.GetType().FullName}', which does not implement System.IEnumerable.");
Type typeInCollection = typeof(string);
Type?genericEnumerableType = TypeHelpers.ExtractGenericInterface(collection.GetType(), typeof(IEnumerable <>));
if (genericEnumerableType != null)
{
typeInCollection = genericEnumerableType.GetGenericArguments()[0];
}
bool typeInCollectionIsNullableValueType = TypeHelpers.IsNullableValueType(typeInCollection);
string oldPrefix = viewData.TemplateInfo.HtmlFieldPrefix;
try {
viewData.TemplateInfo.HtmlFieldPrefix = String.Empty;
string fieldNameBase = oldPrefix;
int index = 0;
foreach (object item in collection)
{
Type itemType = typeInCollection;
if (item != null &&
!typeInCollectionIsNullableValueType)
{
itemType = item.GetType();
}
ModelMetadata metadata = ModelMetadataProviders.Current.GetMetadataForType(() => item, itemType);
string fieldName = String.Format(CultureInfo.InvariantCulture, "{0}[{1}]", fieldNameBase, index++);
templateHelper(
html,
package,
seqOutput,
metadata,
htmlFieldName: fieldName,
templateName: null,
membersNames: null,
DataBoundControlMode.Edit,
additionalViewData: null
);
}
} finally {
viewData.TemplateInfo.HtmlFieldPrefix = oldPrefix;
}
}
public static void EnumTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
string? className = GetEditorCssClass(new EditorInfo("Enum", "select"), null);
var htmlAttributes = CreateHtmlAttributes(html, className);
ViewDataDictionary viewData = html.ViewData;
Type modelType = viewData.ModelMetadata.ModelType;
Type enumType = Nullable.GetUnderlyingType(modelType) ?? modelType;
if (!enumType.IsEnum)
{
throw new InvalidOperationException("Enum template can only be used on Enum members.");
}
string?formatString = viewData.ModelMetadata.EditFormatString
?? viewData.ModelMetadata.DisplayFormatString;
bool applyFormatInEdit = viewData.ModelMetadata.EditFormatString != null;
IList <SelectListItem> options = EnumOptions(enumType, output, formatString, applyFormatInEdit);
string optionLabel = viewData.ModelMetadata.Watermark ?? String.Empty;
SelectInstructions.SelectHelper(html, output, viewData.ModelMetadata, String.Empty, options, optionLabel, multiple: false, htmlAttributes: htmlAttributes);
}
public static void BooleanTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
ViewDataDictionary viewData = html.ViewData;
bool?value = null;
if (viewData.Model != null)
{
value = Convert.ToBoolean(viewData.Model, CultureInfo.InvariantCulture);
}
if (viewData.ModelMetadata.IsNullableValueType)
{
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
string?className = GetEditorCssClass(new EditorInfo("Boolean", "select"), "list-box tri-state");
var htmlAttributes = CreateHtmlAttributes(html, className);
SelectInstructions.Select(html, output, String.Empty, TriStateValues(value), htmlAttributes: htmlAttributes);
}
else
{
string?className = GetEditorCssClass(new EditorInfo("Boolean", "input", InputType.CheckBox), "check-box");
var htmlAttributes = CreateHtmlAttributes(html, className);
InputInstructions.CheckBox(html, package, seqOutput, String.Empty, value.GetValueOrDefault(), htmlAttributes: htmlAttributes);
}
}
public static void PasswordTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
string?className = GetEditorCssClass(new EditorInfo("Password", "input", InputType.Password), "text-box single-line password");
var htmlAttributes = CreateHtmlAttributes(html, className, addMetadataAttributes: true);
InputInstructions.Input(html, output, String.Empty, value: null, type: "password", htmlAttributes: htmlAttributes);
}
public static void HttpPostedFileBaseTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
#if NETCOREAPP
const string templateName = nameof(IFormFile);
#else
const string templateName = nameof(HttpPostedFileBase);
#endif
HtmlInputTemplateHelper(html, package, seqOutput, templateName, inputType: "file");
}
public static void MultilineTextTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
object value = html.ViewData.TemplateInfo.FormattedModelValue;
string?className = GetEditorCssClass(new EditorInfo("MultilineText", "textarea"), "text-box multi-line");
var htmlAttributes = CreateHtmlAttributes(html, className, addMetadataAttributes: true);
TextAreaInstructions.TextArea(html, output, String.Empty, value, 0, 0, htmlAttributes);
}
static void HtmlInputTemplateHelper(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput, string templateName, string?inputType = null)
{
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
object value = html.ViewData.TemplateInfo.FormattedModelValue;
string?className = GetEditorCssClass(new EditorInfo(templateName, "input", InputType.Text), "text-box single-line");
var htmlAttributes = CreateHtmlAttributes(html, className, inputType: inputType, addMetadataAttributes: true);
InputInstructions.Input(html, output, name: String.Empty, value: value, htmlAttributes: htmlAttributes);
}
public static void ListBoxTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
string? className = GetEditorCssClass(new EditorInfo("ListBox", "select"), null);
var htmlAttributes = CreateHtmlAttributes(html, className);
ViewDataDictionary viewData = html.ViewData;
IEnumerable <SelectListItem>?options = Options(viewData);
SelectInstructions.SelectHelper(html, output, viewData.ModelMetadata, String.Empty, options, optionLabel: null, multiple: true, htmlAttributes: htmlAttributes);
}
public static void DecimalTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
ViewDataDictionary viewData = html.ViewData;
if (viewData.TemplateInfo.FormattedModelValue == viewData.ModelMetadata.Model)
{
viewData.TemplateInfo.FormattedModelValue =
String.Format(CultureInfo.CurrentCulture, "{0:0.00}", viewData.ModelMetadata.Model);
}
HtmlInputTemplateHelper(html, package, seqOutput, "Decimal");
}
public static void ColorInputTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
ViewDataDictionary viewData = html.ViewData;
if (viewData.Model is Color color)
{
if (viewData.TemplateInfo.FormattedModelValue == viewData.ModelMetadata.Model)
{
viewData.TemplateInfo.FormattedModelValue =
String.Format(CultureInfo.InvariantCulture, "#{0:X2}{1:X2}{2:X2}", color.R, color.G, color.B);
}
}
HtmlInputTemplateHelper(html, package, seqOutput, "Color", "color");
}
public static void HiddenInputTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
ViewDataDictionary viewData = html.ViewData;
if (!viewData.ModelMetadata.HideSurroundingHtml)
{
DefaultDisplayTemplates.StringTemplate(html, package, seqOutput);
}
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
object?model = viewData.Model;
string?className = GetEditorCssClass(new EditorInfo("HiddenInput", "input", InputType.Hidden), null);
var htmlAttributes = CreateHtmlAttributes(html, className);
InputInstructions.Input(html, output, String.Empty, model, type: "hidden", htmlAttributes: htmlAttributes);
}
public static void DropDownListTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
string? className = GetEditorCssClass(new EditorInfo("DropDownList", "select"), null);
var htmlAttributes = CreateHtmlAttributes(html, className);
ViewDataDictionary viewData = html.ViewData;
string?optionLabel = null;
IEnumerable <SelectListItem>?options = Options(viewData);
OptionList?optionList = options as OptionList;
if (optionList?.AddBlankOption == true)
{
optionLabel = viewData.ModelMetadata.Watermark ?? String.Empty;
}
SelectInstructions.SelectHelper(html, output, viewData.ModelMetadata, String.Empty, options, optionLabel, multiple: false, htmlAttributes: htmlAttributes);
}
