ComboboxItem.cs :  » Content-Management-Systems-CMS » Kooboo » Everest » Library » Extjs » C# / CSharp Open Source

/*
Kooboo is a content management system based on ASP.NET MVC framework. Copyright 2009 Yardi Technology Limited.

This program is free software: you can redistribute it and/or modify it under the terms of the
GNU General Public License version 3 as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program.
If not, see http://www.kooboo.com/gpl3/.
*/
// (c) Copyright Microsoft Corporation.
// This source is subject to the Microsoft Permissive License.
// See http://www.microsoft.com/resources/sharedsource/licensingbasics/sharedsourcelicenses.mspx.
// All other rights reserved.


using System;
using System.Collections.Generic;
using System.Collections.Specialized;

namespace Everest.Library.Extjs{
    [Serializable]
    public class ComboboxItem
    {
        public string Name;

        public string Value;

        public bool isDefaultValue;

        public string Image;
        public string ImageAlt;
        public bool Checked;

        public ComboboxItem()
        {
        }

        public ComboboxItem(string name, string value)
        {
            this.Name = name;
            this.Value = value;
        }

        public ComboboxItem(string name, string value, bool defaultValue)
        {
            this.Name = name;
            this.Value = value;
            this.isDefaultValue = defaultValue;
        }

        /// <summary>
        /// Helper method to parse the private storage format used to communicate known category/value pairs
        /// </summary>
        /// <param name="knownCategoryValues">private storage format string</param>
        /// <returns>dictionary of category/value pairs</returns>
        public static StringDictionary ParseKnownCategoryValuesString(string knownCategoryValues)
        {
            // Validate parameters
            if (null == knownCategoryValues)
            {
                throw new ArgumentNullException("knownCategoryValues");
            }

            StringDictionary dictionary = new StringDictionary();
            if (null != knownCategoryValues)
            {
                // Split into category/value pairs
                foreach (string knownCategoryValue in knownCategoryValues.Split(';'))
                {
                    // Split into category and value
                    string[] knownCategoryValuePair = knownCategoryValue.Split(':');
                    if (2 == knownCategoryValuePair.Length)
                    {
                        // Add the pair to the dictionary
                        dictionary.Add(knownCategoryValuePair[0].ToLowerInvariant(), knownCategoryValuePair[1]);
                    }
                }
            }
            return dictionary;
        }

    }

    public static class CascadingExtension
    {
        public static IList<ComboboxItem> ToComboboxItems<T>(this IEnumerable<T> values, Func<T, string> nameFunc, Func<T, string> valueFunc)
        {
            return ToComboboxItems<T>(values, nameFunc, valueFunc, false);
        }
        public static IList<ComboboxItem> ToComboboxItems<T>(this IEnumerable<T> values, Func<T, string> nameFunc, Func<T, string> valueFunc, bool emptyItem)
        {
            return ToComboboxItems<T>(values, nameFunc, valueFunc, o => null, o => null, emptyItem);
        }
        public static IList<ComboboxItem> ToComboboxItems<T>(this IEnumerable<T> values, Func<T, string> nameFunc, Func<T, string> valueFunc, Func<T, string> imageFunc, Func<T, string> imageAltFunc, bool emptyItem)
        {
            return ToComboboxItems<T>(values, nameFunc, valueFunc, imageFunc, imageAltFunc, o => false, emptyItem);
        }
        public static IList<ComboboxItem> ToComboboxItems<T>(this IEnumerable<T> values, Func<T, string> nameFunc, Func<T, string> valueFunc, Func<T, string> imageFunc, Func<T, string> imageAltFunc, Func<T, bool> checkedFunc, bool emptyItem)
        {
            List<ComboboxItem> items = new List<ComboboxItem>();
            if (emptyItem)
            {
                items.Add(new ComboboxItem(Resources.NoneItem, ""));
            }
            foreach (var o in values)
            {
                items.Add(new ComboboxItem(nameFunc(o), valueFunc(o)) { Image = imageFunc(o), ImageAlt = imageAltFunc(o), Checked = checkedFunc(o) });
            }
            return items;
        }
    }
}