/// <summary>
/// Constructor
/// </summary>
/// <param name="displayLength">Number of rows to display on a single page when using pagination</param>
/// <param name="column">Column specifications</param>
/// <param name="sortOption">Column sort option. If this is null no sorting will be applied</param>
/// <param name="ajaxSource">AJAX source URL</param>
/// <param name="footerSuffix">
/// [Optional] This string gives information to the end user about the information
/// that is current on display on the page
/// </param>
/// <param name="tableHeight">
/// [Optional] Height of the table in pixels. Defaults to 200px. Note. Pass in a null if to do not
/// want any table height set
/// </param>
public DatatableSettings(int displayLength, AOColumn column, AASort sortOption, string ajaxSource,
string footerSuffix = "", string tableHeight = "200px")
: this(
displayLength, new[] { column }, (sortOption == null) ? null : new[] { sortOption }, ajaxSource, footerSuffix,
tableHeight)
{
// nothing to do here
}
/// <summary>
/// Create AOColumn definitions from a type
/// </summary>
/// <param name="type">Type to create AOColumn definitions from</param>
/// <returns>Generated columns</returns>
public static AOColumn[] FromType(Type type)
{
string[] ignoredAttributeProperties = { "ValueFormatter", "TypeId" };
List<KeyValuePair<int, AOColumn>> indexedColumns = new List<KeyValuePair<int, AOColumn>>();
// get the type and all public properties of the given object instance
PropertyInfo[] props = type.GetProperties();
foreach (PropertyInfo prop in props)
{
AOColumnAttribute[] attribs = (AOColumnAttribute[])prop.GetCustomAttributes(typeof(AOColumnAttribute), false);
if (attribs.Length == 0)
continue;
if (attribs.Length > 1)
throw new InvalidUsageException(
string.Format("The property '{0}' on '{1}' can not have multiple decorations of AOColumn attribute", prop.Name, type.FullName));
// fact that we got here means that the attribute decoration was all good
PropertyInfo[] attribProps = attribs[0].GetType().GetProperties();
AOColumn column = new AOColumn();
int idx = -1;
foreach (PropertyInfo attribProp in attribProps)
{
// get the value of the attribute property
object val = attribProp.GetValue(attribs[0], null);
// the 'TypeId' property is inherited from System.Attribute class
// and we don't care about it, so just ignore it
if (val == null || ignoredAttributeProperties.Contains(attribProp.Name))
continue;
// the 'Index' property governs the position of the column in the
// rendered table, so just store it for now and continue
if (attribProp.Name == "Index")
{
idx = (int)val;
continue;
}
// get the same property from AOColumn class and set it's value to
// the value obtained from the attribute's property
PropertyInfo propToSet = column.GetType().GetProperty(attribProp.Name);
propToSet.SetValue(column, val, null);
}
// store the column with it's index for further processing
indexedColumns.Add(new KeyValuePair<int, AOColumn>(idx, column));
}
// order the columns by their key and select
List<AOColumn> columns = indexedColumns.OrderBy(f => f.Key).Select(g => g.Value).ToList();
return columns.ToArray();
}
