|
private GetModelStateValue ( string key, |
||
| key | string | |
| destinationType | ||
| return | object | |
// Helper methods
#region Common Helpers
private static MvcHtmlString InputHelper(HtmlHelper htmlHelper, InputType inputType, ModelMetadata metadata, string name, object value, bool useViewData, bool isChecked, bool setId, bool isExplicitValue, string format, IDictionary <string, object> htmlAttributes)
{
//string fullName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(name);
string fullName = name;
if (String.IsNullOrEmpty(fullName))
{
throw new ArgumentException(MvcResources.Common_NullOrEmpty, "name");
}
TagBuilder tagBuilder = new TagBuilder("input");
tagBuilder.MergeAttributes(htmlAttributes);
tagBuilder.MergeAttribute("type", HtmlHelper.GetInputTypeString(inputType));
tagBuilder.MergeAttribute("name", fullName, true);
string valueParameter = htmlHelper.FormatValue(value, format);
bool usedModelState = false;
switch (inputType)
{
case InputType.CheckBox:
bool?modelStateWasChecked = htmlHelper.GetModelStateValue(fullName, typeof(bool)) as bool?;
if (modelStateWasChecked.HasValue)
{
isChecked = modelStateWasChecked.Value;
usedModelState = true;
}
goto case InputType.Radio;
case InputType.Radio:
if (!usedModelState)
{
string modelStateValue = htmlHelper.GetModelStateValue(fullName, typeof(string)) as string;
if (modelStateValue != null)
{
isChecked = String.Equals(modelStateValue, valueParameter, StringComparison.Ordinal);
usedModelState = true;
}
}
if (!usedModelState && useViewData)
{
isChecked = htmlHelper.EvalBoolean(fullName);
}
if (isChecked)
{
tagBuilder.MergeAttribute("checked", "checked");
}
tagBuilder.MergeAttribute("value", valueParameter, isExplicitValue);
break;
case InputType.Password:
if (value != null)
{
tagBuilder.MergeAttribute("value", valueParameter, isExplicitValue);
}
break;
default:
string attemptedValue = (string)htmlHelper.GetModelStateValue(fullName, typeof(string));
tagBuilder.MergeAttribute("value", attemptedValue ?? ((useViewData) ? htmlHelper.EvalString(fullName, format) : valueParameter), isExplicitValue);
break;
}
if (setId)
{
tagBuilder.GenerateId(fullName);
}
// If there are any errors for a named field, we add the css attribute.
if (htmlHelper.HasFieldError(fullName))
{
tagBuilder.AddCssClass(HtmlHelper.ValidationInputCssClassName);
}
tagBuilder.MergeAttributes(htmlHelper.GetUnobtrusiveValidationAttributes(name, metadata));
//causes 'true,false' to be posted which is an invalid value for booleans
if (false && inputType == InputType.CheckBox)
{
// Render an additional <input type="hidden".../> for checkboxes. This
// addresses scenarios where unchecked checkboxes are not sent in the request.
// Sending a hidden input makes it possible to know that the checkbox was present
// on the page when the request was submitted.
StringBuilder inputItemBuilder = new StringBuilder();
inputItemBuilder.Append(tagBuilder.ToString(TagRenderMode.SelfClosing));
TagBuilder hiddenInput = new TagBuilder("input");
hiddenInput.MergeAttribute("type", HtmlHelper.GetInputTypeString(InputType.Hidden));
hiddenInput.MergeAttribute("name", fullName);
hiddenInput.MergeAttribute("value", "false");
inputItemBuilder.Append(hiddenInput.ToString(TagRenderMode.SelfClosing));
return(MvcHtmlString.Create(inputItemBuilder.ToString()));
}
return(tagBuilder.ToHtmlString(TagRenderMode.SelfClosing));
}
private static MvcHtmlString SelectInternal(this HtmlHelper htmlHelper, ModelMetadata metadata, string optionLabel, string name, IEnumerable <SelectListItem> selectList, bool allowMultiple, IDictionary <string, object> htmlAttributes)
{
//string fullName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(name);
string fullName = name;
if (String.IsNullOrEmpty(fullName))
{
throw new ArgumentException(MvcResources.Common_NullOrEmpty, "name");
}
bool usedViewData = false;
// If we got a null selectList, try to use ViewData to get the list of items.
if (selectList == null)
{
selectList = htmlHelper.GetSelectData(name);
usedViewData = true;
}
object defaultValue = (allowMultiple) ? htmlHelper.GetModelStateValue(fullName, typeof(string[])) : htmlHelper.GetModelStateValue(fullName, typeof(string));
// If we haven't already used ViewData to get the entire list of items then we need to
// use the ViewData-supplied value before using the parameter-supplied value.
if (!usedViewData && defaultValue == null && !String.IsNullOrEmpty(name))
{
defaultValue = htmlHelper.ViewData.Eval(name);
}
if (defaultValue != null)
{
selectList = GetSelectListWithDefaultValue(selectList, defaultValue, allowMultiple);
}
// Convert each ListItem to an <option> tag
StringBuilder listItemBuilder = StringBuilderCache.Allocate();
// Make optionLabel the first item that gets rendered.
if (optionLabel != null)
{
listItemBuilder.AppendLine(ListItemToOption(new SelectListItem()
{
Text = optionLabel, Value = String.Empty, Selected = false
}));
}
foreach (SelectListItem item in selectList)
{
listItemBuilder.AppendLine(ListItemToOption(item));
}
TagBuilder tagBuilder = new TagBuilder("select")
{
InnerHtml = StringBuilderCache.ReturnAndFree(listItemBuilder)
};
tagBuilder.MergeAttributes(htmlAttributes);
tagBuilder.MergeAttribute("name", fullName, true /* replaceExisting */);
tagBuilder.GenerateId(fullName);
if (allowMultiple)
{
tagBuilder.MergeAttribute("multiple", "multiple");
}
// If there are any errors for a named field, we add the css attribute.
ModelState modelState;
if (htmlHelper.ViewData.ModelState.TryGetValue(fullName, out modelState))
{
if (modelState.Errors.Count > 0)
{
tagBuilder.AddCssClass(HtmlHelper.ValidationInputCssClassName);
}
}
tagBuilder.MergeAttributes(htmlHelper.GetUnobtrusiveValidationAttributes(name, metadata));
return(tagBuilder.ToMvcHtmlString(TagRenderMode.Normal));
}
// Helper methods
#region Common Helpers
private static MvcHtmlString InputHelper(HtmlHelper htmlHelper, InputType inputType, ModelMetadata metadata, string name, object value, bool useViewData, bool isChecked, bool setId, bool isExplicitValue, string format, IDictionary <string, object> htmlAttributes)
{
//string fullName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(name);
string fullName = name;
if (String.IsNullOrEmpty(fullName))
{
throw new ArgumentException(MvcResources.Common_NullOrEmpty, "name");
}
TagBuilder tagBuilder = new TagBuilder("input");
tagBuilder.MergeAttributes(htmlAttributes);
tagBuilder.MergeAttribute("type", HtmlHelper.GetInputTypeString(inputType));
tagBuilder.MergeAttribute("name", fullName, true);
string valueParameter = htmlHelper.FormatValue(value, format);
bool usedModelState = false;
switch (inputType)
{
case InputType.CheckBox:
bool?modelStateWasChecked = htmlHelper.GetModelStateValue(fullName, typeof(bool)) as bool?;
if (modelStateWasChecked.HasValue)
{
isChecked = modelStateWasChecked.Value;
usedModelState = true;
}
goto case InputType.Radio;
case InputType.Radio:
if (!usedModelState)
{
string modelStateValue = htmlHelper.GetModelStateValue(fullName, typeof(string)) as string;
if (modelStateValue != null)
{
isChecked = String.Equals(modelStateValue, valueParameter, StringComparison.Ordinal);
usedModelState = true;
}
}
if (!usedModelState && useViewData)
{
isChecked = htmlHelper.EvalBoolean(fullName);
}
if (isChecked)
{
tagBuilder.MergeAttribute("checked", "checked");
}
tagBuilder.MergeAttribute("value", valueParameter, isExplicitValue);
break;
case InputType.Password:
if (value != null)
{
tagBuilder.MergeAttribute("value", valueParameter, isExplicitValue);
}
break;
default:
string attemptedValue = (string)htmlHelper.GetModelStateValue(fullName, typeof(string));
tagBuilder.MergeAttribute("value", attemptedValue ?? ((useViewData) ? htmlHelper.EvalString(fullName, format) : valueParameter), isExplicitValue);
break;
}
if (setId)
{
tagBuilder.GenerateId(fullName);
}
// If there are any errors for a named field, we add the css attribute.
if (htmlHelper.HasFieldError(fullName))
{
tagBuilder.AddCssClass(HtmlHelper.ValidationInputCssClassName);
}
tagBuilder.MergeAttributes(htmlHelper.GetUnobtrusiveValidationAttributes(name, metadata));
return(tagBuilder.ToHtmlString(TagRenderMode.SelfClosing));
}
// Helper methods
private static MvcHtmlString InputHelper(HtmlHelper htmlHelper, InputType inputType, ModelMetadata metadata, string name, object value, bool useViewData, bool isChecked, bool setId, bool isExplicitValue, IDictionary <string, object> htmlAttributes)
{
var fullName = name;
if (String.IsNullOrEmpty(name))
{
throw new ArgumentException(MvcResources.Common_NullOrEmpty, "name");
}
var tagBuilder = new TagBuilder("input");
tagBuilder.MergeAttributes(htmlAttributes);
tagBuilder.MergeAttribute("type", HtmlHelper.GetInputTypeString(inputType));
tagBuilder.MergeAttribute("name", fullName, true);
string valueParameter = Convert.ToString(value, CultureInfo.CurrentCulture);
bool usedModelState = false;
switch (inputType)
{
case InputType.CheckBox:
var modelStateWasChecked = htmlHelper.GetModelStateValue(fullName, typeof(bool)) as bool?;
if (modelStateWasChecked.HasValue)
{
isChecked = modelStateWasChecked.Value;
usedModelState = true;
}
goto case InputType.Radio;
case InputType.Radio:
if (!usedModelState)
{
var modelStateValue = htmlHelper.GetModelStateValue(fullName, typeof(string)) as string;
if (modelStateValue != null)
{
isChecked = String.Equals(modelStateValue, valueParameter, StringComparison.Ordinal);
usedModelState = true;
}
}
if (!usedModelState && useViewData)
{
isChecked = htmlHelper.EvalBoolean(fullName);
}
if (isChecked)
{
tagBuilder.MergeAttribute("checked", "checked");
}
tagBuilder.MergeAttribute("value", valueParameter, isExplicitValue);
break;
case InputType.Password:
if (value != null)
{
tagBuilder.MergeAttribute("value", valueParameter, isExplicitValue);
}
break;
default:
var attemptedValue = (string)htmlHelper.GetModelStateValue(fullName, typeof(string));
tagBuilder.MergeAttribute("value", attemptedValue ?? ((useViewData) ? htmlHelper.EvalString(fullName) : valueParameter), isExplicitValue);
break;
}
if (setId)
{
tagBuilder.GenerateId(fullName);
}
return(tagBuilder.ToMvcHtmlString(TagRenderMode.SelfClosing));
}
