/// <summary>
/// Creates an an individual checkbox
/// </summary>
/// <param name="sb">String builder of checkbox list</param>
/// <param name="htmlHelper">HtmlHelper passed from view model</param>
/// <param name="modelMetadata">Model Metadata</param>
/// <param name="htmlWrapper">MVC Html helper class that is being extended</param>
/// <param name="htmlAttributesForCheckBox">Each checkbox HTML tag attributes (e.g. 'new { class="somename" }')</param>
/// <param name="selectedValues">List of strings of selected values</param>
/// <param name="itemIsSelected"> </param>
/// <param name="disabledValues">List of strings of disabled values</param>
/// <param name="name">Name of the checkbox list (same for all checkboxes)</param>
/// <param name="itemValue">Value of the checkbox</param>
/// <param name="itemText">Text to be displayed next to checkbox</param>
/// <param name="textLayout">Sets layout of a checkbox for right-to-left languages</param>
/// <returns>String builder of checkbox list</returns>
private StringBuilder _createCheckBoxListElement
(StringBuilder sb, HtmlHelper htmlHelper, ModelMetadata modelMetadata,
htmlWrapperInfo htmlWrapper, IDictionary <string, object> htmlAttributesForCheckBox,
List <string> selectedValues, string itemIsSelected,
IEnumerable <string> disabledValues, string name, string itemValue,
string itemText, TextLayout textLayout)
{
// get full name from view model
var fullName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(name);
// create checkbox tag
var checkbox_builder = new TagBuilder("input");
if (selectedValues.Any(value => value == itemValue))
{
checkbox_builder.MergeAttribute("checked", "checked");
}
bool selected;
if (bool.TryParse(itemIsSelected, out selected))
{
if (selected)
{
checkbox_builder.MergeAttribute("checked", "checked");
}
}
checkbox_builder.MergeAttributes(htmlAttributesForCheckBox.toDictionary());
checkbox_builder.MergeAttribute("type", "checkbox");
checkbox_builder.MergeAttribute("value", itemValue);
checkbox_builder.MergeAttribute("name", fullName);
// create linked label tag
var link_id = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldId(name) + linked_label_counter++;
checkbox_builder.GenerateId(link_id);
var linked_label_builder = new TagBuilder("label");
linked_label_builder.MergeAttribute("for", link_id);
linked_label_builder.MergeAttributes(htmlAttributesForCheckBox.toDictionary());
linked_label_builder.InnerHtml = itemText;
// 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)
{
checkbox_builder.AddCssClass(HtmlHelper.ValidationInputCssClassName);
}
}
checkbox_builder.MergeAttributes(htmlHelper.GetUnobtrusiveValidationAttributes(name, modelMetadata));
// open checkbox tag wrapper
if (textLayout == TextLayout.RightToLeft)
{
// then set style for displaying checkbox for right-to-left languages
var defaultSectionStyle = "style=\"text-align: right;\"";
sb.Append(htmlWrapper.wrap_element != htmlElementTag.None
? "<" + htmlWrapper.wrap_element + " " + defaultSectionStyle + ">"
: "");
}
else
{
sb.Append(htmlWrapper.wrap_element != htmlElementTag.None
? "<" + htmlWrapper.wrap_element + ">"
: "");
}
// build hidden tag for disabled checkbox (so the value will post)
if (disabledValues != null && disabledValues.ToList().Any(x => x == itemValue))
{
// set main checkbox to be disabled
checkbox_builder.MergeAttribute("disabled", "disabled");
// create a hidden input with checkbox value
// so it can be posted if checked
if (selectedValues.Any(x => x == itemValue))
{
var hidden_input_builder = new TagBuilder("input");
hidden_input_builder.MergeAttribute("type", "hidden");
hidden_input_builder.MergeAttribute("value", itemValue);
hidden_input_builder.MergeAttribute("name", name);
sb.Append(hidden_input_builder.ToString(TagRenderMode.SelfClosing));
}
}
// create checkbox and tag combination
if (textLayout == TextLayout.RightToLeft)
{
// then display checkbox for right-to-left languages
sb.Append(linked_label_builder.ToString(TagRenderMode.Normal));
sb.Append(checkbox_builder.ToString(TagRenderMode.SelfClosing));
}
else
{
sb.Append(checkbox_builder.ToString(TagRenderMode.SelfClosing));
sb.Append(linked_label_builder.ToString(TagRenderMode.Normal));
}
// close checkbox tag wrapper
sb.Append(htmlWrapper.wrap_element != htmlElementTag.None
? "</" + htmlWrapper.wrap_element + ">"
: "");
// add element ending
sb.Append(htmlWrapper.append_to_element);
// add table column break, if applicable
htmlwrap_rowbreak_counter += 1;
if (htmlwrap_rowbreak_counter == htmlWrapper.separator_max_counter)
{
sb.Append(htmlWrapper.wrap_rowbreak);
htmlwrap_rowbreak_counter = 0;
}
// return string builder with checkbox html markup
return(sb);
}
/// <summary>
/// Creates an HTML wrapper for the checkbox list
/// </summary>
/// <param name="wrapInfo">Settings for HTML wrapper of the list (e.g. 'new HtmlListInfo2(HtmlTag2.vertical_columns, 2, new { style="color:green;" })')</param>
/// <param name="numberOfItems">Count of all items in the list</param>
/// <param name="position">Direction of the list (e.g. 'Position2.Horizontal' or 'Position2.Vertical')</param>
/// <param name="textLayout">Sets layout of a checkbox for right-to-left languages</param>
/// <returns>HTML wrapper information</returns>
private htmlWrapperInfo _createHtmlWrapper
(HtmlListInfo wrapInfo, int numberOfItems, Position position, TextLayout textLayout)
{
var w = new htmlWrapperInfo();
if (wrapInfo != null)
{
// creating custom layouts
switch (wrapInfo.htmlTag)
{
// creates user selected number of float sections with
// vertically sorted checkboxes
case HtmlTag.vertical_columns: {
if (wrapInfo.Columns <= 0)
{
wrapInfo.Columns = 1;
}
// calculate number of rows
var rows = Convert.ToInt32(Math.Ceiling(Convert.ToDecimal(numberOfItems)
/ Convert.ToDecimal(wrapInfo.Columns)));
if (numberOfItems <= 4 &&
(numberOfItems <= wrapInfo.Columns || numberOfItems - wrapInfo.Columns == 1))
{
rows = numberOfItems;
}
w.separator_max_counter = rows;
// create wrapped raw html tag
var wrapRow = htmlElementTag.div;
var wrapHtml_builder = new TagBuilder(wrapRow.ToString());
var user_html_attributes = wrapInfo.htmlAttributes.toDictionary();
// create base columnt style and merge it with user provided style (if applicable)
var defaultSectionStyle = "float:left;";
if (textLayout == TextLayout.RightToLeft)
{
defaultSectionStyle += " text-align: right;";
}
object style;
user_html_attributes.TryGetValue("style", out style);
if (style != null) // if user style is set, use it
{
wrapHtml_builder.MergeAttribute("style", defaultSectionStyle + " " + style);
}
else // if not set, add only default style
{
wrapHtml_builder.MergeAttribute("style", defaultSectionStyle);
}
// merge it with other user provided attributes (e.g.: class)
user_html_attributes.Remove("style");
wrapHtml_builder.MergeAttributes(user_html_attributes);
// build wrapped raw html tag
w.wrap_open = wrapHtml_builder.ToString(TagRenderMode.StartTag);
w.wrap_rowbreak =
"</" + wrapRow + "> " + wrapHtml_builder.ToString(TagRenderMode.StartTag);
w.wrap_close = wrapHtml_builder.ToString(TagRenderMode.EndTag) +
" <div style=\"clear:both;\"></div>";
w.append_to_element = "<br/>";
}
break;
// creates an html <table> with checkboxes sorted horizontally
case HtmlTag.table: {
if (wrapInfo.Columns <= 0)
{
wrapInfo.Columns = 1;
}
w.separator_max_counter = wrapInfo.Columns;
var wrapHtml_builder = new TagBuilder(htmlElementTag.table.ToString());
wrapHtml_builder.MergeAttributes(wrapInfo.htmlAttributes.toDictionary());
wrapHtml_builder.MergeAttribute("cellspacing", "0"); // for IE7 compatibility
var wrapRow = htmlElementTag.tr;
w.wrap_element = htmlElementTag.td;
w.wrap_open = wrapHtml_builder.ToString(TagRenderMode.StartTag) +
"<" + wrapRow + ">";
w.wrap_rowbreak = "</" + wrapRow + "><" + wrapRow + ">";
w.wrap_close = "</" + wrapRow + ">" +
wrapHtml_builder.ToString(TagRenderMode.EndTag);
}
break;
}
}
// default setting creates vertical or horizontal column of checkboxes
else
{
if (position == Position.Horizontal || position == Position.Horizontal_RightToLeft)
{
w.append_to_element = " ";
}
if (position == Position.Vertical || position == Position.Vertical_RightToLeft)
{
w.append_to_element = "<br/>";
}
if (textLayout == TextLayout.RightToLeft)
{
// lean text to right for right-to-left languages
var defaultSectionStyle = "style=\"text-align: right;\"";
var wrapRow = htmlElementTag.div;
w.wrap_open = "<" + wrapRow + " " + defaultSectionStyle + ">";
w.wrap_rowbreak = string.Empty;
w.wrap_close = "</" + wrapRow + ">";
}
}
// return completed check box list wrapper
return(w);
}