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#region licence
// The MIT License (MIT)
//
// Filename: DropDownListType.cs
// Date Created: 2014/05/20
//
// Copyright (c) 2014 Jon Smith (www.selectiveanalytics.com & www.thereformedprogrammer.net)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#endregion
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
namespace ServiceLayer.UiClasses
{
public class DropDownListType
{
/// <summary>
/// This contains the strings to show and the value to return if that string is selected
/// </summary>
public List<KeyValuePair<string,string>> KeyValueList { get; private set; }
/// <summary>
/// This is the value returned from the list
/// </summary>
[Required]
public string SelectedValue { get; set; }
/// <summary>
/// This returns an integer if the SelectedValue is a string, otherwise null
/// </summary>
public int? SelectedValueAsInt
{
get
{
int result;
if (int.TryParse(SelectedValue, out result))
return result;
return null;
}
}
/// <summary>
/// This sets up the KeyValueList to the given list
/// This must be done before handed to MVC for display (or redisplay on error)
/// </summary>
/// <param name="keyValueList"></param>
/// <param name="promptString">If supplied then puts up string and the user must select something. Otherwise first item selected</param>
public void SetupDropDownListContent(IEnumerable<KeyValuePair<string, string>> keyValueList,
string promptString)
{
KeyValueList = keyValueList.ToList(); //take a copy
if (promptString != null)
KeyValueList.Insert(0, new KeyValuePair<string, string>(promptString, null));
else
SelectedValue = KeyValueList[0].Value;
}
public void SetSelectedValue(string valueAsString)
{
var foundEntry = KeyValueList.FirstOrDefault(x => x.Value == valueAsString);
SelectedValue = KeyValueList.Any(x => x.Value == valueAsString)
? KeyValueList.First(x => x.Value == valueAsString).Value
: "--- selecte from list ---";
}
public override string ToString()
{
if (SelectedValue != null )
return string.Format("Selected Value = {0}", SelectedValue);
if (KeyValueList == null)
return "KeyValue list has not been set up yet.";
return string.Format("{0} items in list, but no selected value", KeyValueList.Count);
}
}
}