public static void RadioButtonForModel(
HtmlHelper htmlHelper, XcstWriter output, object value, bool isChecked, HtmlAttribs?htmlAttributes = null)
{
ModelMetadata metadata = htmlHelper.ViewData.ModelMetadata;
RadioButtonForMetadata(htmlHelper, output, metadata, String.Empty, value, /*isChecked: */ isChecked, htmlAttributes);
}
public void WriteTo(XcstWriter output)
{
foreach (var item in this)
{
HtmlAttributeHelper.WriteAttribute(item.Key, item.Value, output);
}
}
static void RadioButtonHelper(
HtmlHelper htmlHelper, XcstWriter output, ModelMetadata?metadata, string name, object value, bool?isChecked, HtmlAttribs?htmlAttributes)
{
bool explicitChecked = isChecked.HasValue;
if (explicitChecked &&
htmlAttributes != null &&
htmlAttributes.ContainsKey("checked"))
{
htmlAttributes = htmlAttributes.Clone();
htmlAttributes.Remove("checked"); // Explicit value must override dictionary
}
InputHelper(
htmlHelper,
output,
InputType.Radio,
metadata,
name,
value,
useViewData: false,
isChecked: isChecked.GetValueOrDefault(),
setId: true,
isExplicitValue: true,
format: null,
htmlAttributes: htmlAttributes);
}
public static void Label(
HtmlHelper html, XcstWriter output, string expression, string?labelText = null, HtmlAttribs?htmlAttributes = null)
{
ModelMetadata metadata = ModelMetadata.FromStringExpression(expression, html.ViewData);
LabelHelper(html, output, metadata, expression, labelText, htmlAttributes);
}
public static void InputForModel(
HtmlHelper htmlHelper, XcstWriter output, object?value = null, string?type = null, string?format = null, HtmlAttribs?htmlAttributes = null)
{
ModelMetadata metadata = htmlHelper.ViewData.ModelMetadata;
InputForMetadata(htmlHelper, output, type, metadata, /*expression: */ String.Empty, value, format, htmlAttributes);
}
internal static IList <SelectListItem> EnumOptions(Type enumType, XcstWriter output, string?formatString = null, bool applyFormatInEdit = false)
{
Debug.Assert(enumType.IsEnum);
var selectList = new List <SelectListItem>();
const BindingFlags BindingFlags = BindingFlags.DeclaredOnly
| BindingFlags.GetField
| BindingFlags.Public
| BindingFlags.Static;
foreach (FieldInfo field in enumType.GetFields(BindingFlags))
{
object enumValue = field.GetValue(null);
string value = (formatString != null && applyFormatInEdit) ?
String.Format(CultureInfo.CurrentCulture, formatString, enumValue)
: field.Name;
string text = (formatString != null && !applyFormatInEdit) ?
output.SimpleContent.Format(formatString, enumValue)
: DisplayNameUtil.GetFieldDisplayName(field);
selectList.Add(new SelectListItem {
Value = value,
Text = text,
});
}
return(selectList);
}
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 WriteBoolean(string key, bool value, XcstWriter output)
{
if (value)
{
output.WriteAttributeString(key, key);
}
}
public static void LabelFor <TModel, TValue>(
HtmlHelper <TModel> html, XcstWriter output, Expression <Func <TModel, TValue> > expression, string?labelText = null, HtmlAttribs?htmlAttributes = null)
{
ModelMetadata metadata = ModelMetadata.FromLambdaExpression(expression, html.ViewData);
string expressionString = ExpressionHelper.GetExpressionText(expression);
LabelHelper(html, output, metadata, expressionString, labelText, htmlAttributes);
}
public static void InputFor <TModel, TProperty>(
HtmlHelper <TModel> htmlHelper, XcstWriter output, Expression <Func <TModel, TProperty> > expression, string?type = null, string?format = null, HtmlAttribs?htmlAttributes = null)
{
ModelMetadata metadata = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);
string exprString = ExpressionHelper.GetExpressionText(expression);
InputForMetadata(htmlHelper, output, type, metadata, exprString, /*value: */ null, format, 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);
}
internal static void WriteId(string name, XcstWriter output)
{
string?sanitizedId = TagBuilder.CreateSanitizedId(name);
if (!String.IsNullOrEmpty(sanitizedId))
{
output.WriteAttributeString("id", sanitizedId);
}
}
public static void ValidationMessageFor <TModel, TProperty>(
HtmlHelper <TModel> htmlHelper, XcstWriter output, Expression <Func <TModel, TProperty> > expression, string?validationMessage = null,
HtmlAttribs?htmlAttributes = null, string?tag = null)
{
ModelMetadata metadata = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);
string expressionString = ExpressionHelper.GetExpressionText(expression);
ValidationMessageHelper(htmlHelper, output, metadata, expressionString, validationMessage, htmlAttributes, tag);
}
internal static void TextAreaHelper(
HtmlHelper htmlHelper, XcstWriter output, ModelMetadata metadata, string name, IDictionary <string, object> rowsAndColumns,
HtmlAttribs?htmlAttributes, string?innerHtmlPrefix = null)
{
string fullName = htmlHelper.ViewData.TemplateInfo.GetFullHtmlFieldName(name);
if (String.IsNullOrEmpty(fullName))
{
throw new ArgumentNullException(nameof(name));
}
output.WriteStartElement("textarea");
HtmlAttributeHelper.WriteId(fullName, output);
output.WriteAttributeString("name", fullName);
HtmlAttributeHelper.WriteAttributes(rowsAndColumns, output);
bool explicitRowsAndCols = rowsAndColumns != implicitRowsAndColumns;
// If there are any errors for a named field, we add the css attribute.
string?cssClass = (htmlHelper.ViewData.ModelState.TryGetValue(fullName, out ModelState modelState) &&
modelState.Errors.Count > 0) ? HtmlHelper.ValidationInputCssClassName : null;
HtmlAttributeHelper.WriteClass(cssClass, htmlAttributes, output);
HtmlAttributeHelper.WriteAttributes(htmlHelper.GetUnobtrusiveValidationAttributes(name, metadata), output);
// name cannnot be overridden, and class was already written
// explicit rows and cols cannot be overridden
HtmlAttributeHelper.WriteAttributes(
htmlAttributes,
output,
excludeFn: n => n == "name" || n == "class" || (explicitRowsAndCols && (n == "rows" || n == "cols")));
string?value;
if (modelState?.Value != null)
{
value = modelState.Value.AttemptedValue;
}
else if (metadata.Model != null)
{
value = Convert.ToString(metadata.Model, CultureInfo.CurrentCulture);
}
else
{
value = String.Empty;
}
// The first newline is always trimmed when a TextArea is rendered, so we add an extra one
// in case the value being rendered is something like "\r\nHello".
output.WriteString((innerHtmlPrefix ?? Environment.NewLine) + value);
output.WriteEndElement();
}
static void InputImpl(
HtmlHelper htmlHelper, XcstWriter output, string?type, ModelMetadata?metadata, string expression, object?value,
bool?useViewData, string?format, HtmlAttribs?htmlAttributes)
{
InputType?inputType = GetInputType(type);
bool checkBoxOrRadio = inputType == InputType.CheckBox ||
inputType == InputType.Radio;
if (type != null &&
(inputType is null || checkBoxOrRadio) &&
(htmlAttributes is null || !htmlAttributes.ContainsKey("type")))
{
htmlAttributes = htmlAttributes?.Clone() ?? new HtmlAttributeDictionary();
htmlAttributes["type"] = type;
}
if (checkBoxOrRadio)
{
// Don't want Input() to behave like RadioButton() or CheckBox()
inputType = null;
}
if (inputType == InputType.Hidden)
{
#if ASPNETMVC
if (value is Binary binaryValue)
{
value = binaryValue.ToArray();
}
#endif
if (value is byte[] byteArrayValue)
{
value = Convert.ToBase64String(byteArrayValue);
}
}
if (useViewData is null)
{
useViewData = (value is null);
}
InputHelper(
htmlHelper,
output,
inputType ?? InputType.Text,
metadata: metadata,
name: expression,
value: value,
useViewData: useViewData.Value,
isChecked: false,
setId: true,
isExplicitValue: true,
format: format,
htmlAttributes: htmlAttributes);
}
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);
}
public static void RadioButton(
HtmlHelper htmlHelper, XcstWriter output, string name, object value, bool isChecked, HtmlAttribs?htmlAttributes = null)
{
if (value is null)
{
throw new ArgumentNullException(nameof(value));
}
RadioButtonHelper(htmlHelper, output, /*metadata: */ null, name, value, isChecked, htmlAttributes);
}
public static void UrlTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
ViewDataDictionary viewData = html.ViewData;
output.WriteStartElement("a");
output.WriteAttributeString("href", Convert.ToString(viewData.Model, CultureInfo.InvariantCulture));
output.WriteString(output.SimpleContent.Convert(viewData.TemplateInfo.FormattedModelValue));
output.WriteEndElement();
}
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);
}
GetHtml(HttpContext httpContext, XcstWriter output)
{
IAntiforgery antiforgery = GetAntiforgeryService(httpContext);
AntiforgeryTokenSet tokenSet = antiforgery.GetAndStoreTokens(httpContext);
output.WriteStartElement("input");
output.WriteAttributeString("type", "hidden");
output.WriteAttributeString("name", tokenSet.FormFieldName);
output.WriteAttributeString("value", tokenSet.RequestToken);
output.WriteEndElement();
}
public static void TextArea(
HtmlHelper htmlHelper, XcstWriter output, string name, object?value = null, HtmlAttribs?htmlAttributes = null)
{
ModelMetadata metadata = ModelMetadata.FromStringExpression(name, htmlHelper.ViewData);
if (value != null)
{
metadata.Model = value;
}
TextAreaHelper(htmlHelper, output, metadata, name, implicitRowsAndColumns, htmlAttributes);
}
static void InputForMetadata(
HtmlHelper htmlHelper, XcstWriter output, string?type, ModelMetadata?metadata, string expression, object?value,
string?format, HtmlAttribs?htmlAttributes)
{
if (value is null &&
metadata != null &&
GetInputType(type) != InputType.Password)
{
value = metadata.Model;
}
InputImpl(htmlHelper, output, type, metadata, expression, value, /*useViewData: */ false, format, htmlAttributes);
}
public static void ImageUrlTemplate(HtmlHelper html, IXcstPackage package, ISequenceWriter <object> seqOutput)
{
ViewDataDictionary viewData = html.ViewData;
if (viewData.Model != null)
{
XcstWriter output = DocumentWriter.CastElement(package, seqOutput);
output.WriteStartElement("img");
output.WriteAttributeString("src", Convert.ToString(viewData.Model, CultureInfo.InvariantCulture));
output.WriteEndElement();
}
}
public static void RadioButtonFor <TModel, TProperty>(
HtmlHelper <TModel> htmlHelper, XcstWriter output, Expression <Func <TModel, TProperty> > expression, object value, HtmlAttribs?htmlAttributes = null)
{
if (value is null)
{
throw new ArgumentNullException(nameof(value));
}
ModelMetadata metadata = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);
string expressionString = ExpressionHelper.GetExpressionText(expression);
RadioButtonForMetadata(htmlHelper, output, metadata, expressionString, value, /*isChecked: */ null, htmlAttributes);
}
public static void GetHtml(HttpContextBase httpContext, XcstWriter output)
{
if (httpContext is null)
{
throw new ArgumentNullException(nameof(httpContext));
}
if (output is null)
{
throw new ArgumentNullException(nameof(output));
}
_worker.GetFormInputElement(httpContext, output);
}
public static void TextAreaFor <TModel, TProperty>(
HtmlHelper <TModel> htmlHelper, XcstWriter output, Expression <Func <TModel, TProperty> > expression, HtmlAttribs?htmlAttributes = null)
{
if (expression is null)
{
throw new ArgumentNullException(nameof(expression));
}
ModelMetadata metadata = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);
string expressionString = ExpressionHelper.GetExpressionText(expression);
TextAreaHelper(htmlHelper, output, metadata, expressionString, implicitRowsAndColumns, htmlAttributes);
}
public static void ValidationMessage(
HtmlHelper htmlHelper, XcstWriter output, string modelName, string?validationMessage = null, HtmlAttribs?htmlAttributes = null,
string?tag = null)
{
if (modelName is null)
{
throw new ArgumentNullException(nameof(modelName));
}
ModelMetadata metadata = ModelMetadata.FromStringExpression(modelName, htmlHelper.ViewData);
ValidationMessageHelper(htmlHelper, output, metadata, modelName, validationMessage, htmlAttributes, tag);
}
public static void SelectFor <TModel, TProperty>(
HtmlHelper <TModel> htmlHelper, XcstWriter output, Expression <Func <TModel, TProperty> > expression, IEnumerable <SelectListItem>?selectList = null,
bool multiple = false, HtmlAttribs?htmlAttributes = null)
{
if (expression is null)
{
throw new ArgumentNullException(nameof(expression));
}
ModelMetadata metadata = ModelMetadata.FromLambdaExpression(expression, htmlHelper.ViewData);
string expressionString = ExpressionHelper.GetExpressionText(expression);
SelectHelper(htmlHelper, output, metadata, expressionString, selectList, default(string), multiple, htmlAttributes);
}
