/// <summary>
/// Populates a tag containing select list with options parsed from the leaf node.
/// </summary>
/// <param name="selectListTagBuilder"></param>
/// <param name="node"></param>
private static void PopulateServerDropdown(TagBuilder selectListTagBuilder, FilterLeafNode node)
{
var prefilterData = GetValidatedPrefilterDropdownData(node);
var innerHtmlBuilder = new StringBuilder();
foreach (var dataObject in prefilterData)
{
// Get the data object type so we can read the important properties and create the option for the select tag
var objectType = dataObject.GetType();
// Get and validate the display property
var displayProperty = objectType.GetProperty(node.PreFilterDataDispaly);
if (displayProperty == null)
{
throw new PrefilterDisplayPropertyNotFoundException("Dropdown Extensions : The prefilter data object/s does not contain the specified display property");
}
// Get and validate the value property
var valuePropety = objectType.GetProperty(node.PreFilterDataValue);
if (valuePropety == null)
{
throw new PrefilterValuePropertyNotFoundException("Dropdown Extensions : The prefilter data object/s does not contain the specified value property");
}
// Get the actual property values from the data object for both the value and display properties.
// Get the string representatinos so we can add/display them on the UI
var dataObjectValue = valuePropety.GetValue(dataObject).ToString();
var dataObjectDisplay = displayProperty.GetValue(dataObject).ToString();
// Create a option tag from the two data object properties
var optionTagBuilder = FilterHtmlGeneralBuilders.FilterSelectOption(dataObjectValue, dataObjectDisplay);
innerHtmlBuilder.Append(optionTagBuilder);
}
// Once we go through all the objects in the prefilter data for the dropdown
// we are going to set the selectTagBuilder inner html
selectListTagBuilder.InnerHtml = innerHtmlBuilder.ToString();
}
/// <summary>
/// Create an HTML element for the Filter Node defined in the FilterScaffoldModel object.
///
/// </summary>
/// <param name="scaffoldModel"> The scaffold model containing the filter nodes </param>
/// <param name="nodeName"> The name of the node that we will be parsing and creating a filter ui element for </param>
/// <param name="createLabel">Flag indicating if the helper will wrap the filter input element in a parent also containing a label </param>
/// <param name="cssClasses"> A custom css class collection for the filter input element </param>
/// <returns>UI component referencing the string</returns>
public static MvcHtmlString DynamicFilterElement <T>(FilterScaffoldModel <T> scaffoldModel, string nodeName, bool createLabel, string cssClasses = "")
{
var node = scaffoldModel.GetLeafNodeByName(nodeName);
TagBuilder tagBuilder;
// determine the type of inputs
switch (node.FilterDataType)
{
case FilterDataType.String:
tagBuilder = FilterHtmlGeneralBuilders.FilterTextInput(cssClasses);
break;
case FilterDataType.Integer:
tagBuilder = FilterHtmlGeneralBuilders.FilterTextInput(cssClasses);
break;
case FilterDataType.Decimal:
tagBuilder = FilterHtmlGeneralBuilders.FilterTextInput(cssClasses);
break;
case FilterDataType.Date:
tagBuilder = FilterHtmlGeneralBuilders.FilterTextInput(cssClasses);
break;
case FilterDataType.SimpleDropdown:
tagBuilder = FilterHtmlGeneralBuilders.FilterSelectInput(cssClasses);
if (!node.IsDropdownClientPopulated)
{
PopulateServerDropdown(tagBuilder, node);
}
break;
default:
throw new ArgumentOutOfRangeException();
}
// Add the generic filter input element class to the input
tagBuilder.AddCssClass("data-query-filter-input");
// Populate the attributes for the filter node / ui element
tagBuilder.AddAttribute("data-filter-data-type", node.FilterDataType.ToString());
// set the data type on the tag builder
tagBuilder.AddAttribute("data-dropdown-value-type", node.DropdownValueType.ToString());
tagBuilder.AddAttribute("data-filter-case", node.CaseSensitivity.ToString());
tagBuilder.AddAttribute("data-filter-operation-type", node.OperationType.ToString());
tagBuilder.AddAttribute("data-filter-operator", node.Operator.ToString());
tagBuilder.AddAttribute("data-filter-target", node.Target);
tagBuilder.AddAttribute("data-filter-label", node.Label);
tagBuilder.AddAttribute("id", node.Target);
// Add the fixed filter input class
tagBuilder.AddCssClass("query-filter-input");
return(new MvcHtmlString(tagBuilder.ToString()));
}