using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using JwKdsV.Core.Utils;

namespace JwKdsV.Component
{
    public partial class DualListBox : UserControl
    {
        private BindingSource sourceBindingSource = new BindingSource();

        private BindingSource selectBindingSource = new BindingSource();

        public DualListBox()
        {
            InitializeComponent();

            this.sourceListBox.DataSource = sourceBindingSource;
            this.selectListBox.DataSource = selectBindingSource;
        }

        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);
        }

        

        [Category("杂项"), Description("数据源")]
        private object _dataSource;
        public object DataSource
        {
            get
            {
                return _dataSource;
            }
            set
            {
                this._dataSource = value;
                sourceBindingSource.DataSource = this._dataSource;
                RefreshLabelInfo();
            }
        }

        private string _displayMember;
        [Category("杂项"), Description("显示内容")]
        public string DisplayMember
        {
            get
            {
                return _displayMember;
            }
            set
            {
                if(value == null)
                {
                    return;
                }
                this._displayMember = value;
                this.sourceListBox.DisplayMember = this._displayMember;
            }
        }

        public string _valueMember;
        [Category("杂项"), Description("取值内容")]
        public string ValueMember
        {
            get
            {
                return _valueMember;
            }
            set
            {
                if(value == null)
                {
                    return;
                }
                this._valueMember = value;
                this.sourceListBox.ValueMember = this._valueMember;
            }
        }

        

        public object SelectedValues
        {
            get
            {
                var select = selectBindingSource.DataSource;
                if(select == null)
                {
                    select = new List<object>();
                }
                return select;
            }
            set
            {
                var list = sourceBindingSource.DataSource as IList;
                if (list == null)
                {
                    list = new List<object>();
                    sourceBindingSource.DataSource = list;
                }
                var selectedBoxSource = selectBindingSource.DataSource as IList;
                if (selectedBoxSource == null)
                {
                    selectedBoxSource = new List<object>();
                    selectBindingSource.DataSource = selectedBoxSource;
                }

                List<object> delObjectList = new List<object>();
                var temp = value as List<string>;
                if (temp == null)
                {
                    return;
                }
                foreach (var s in temp)
                {
                    foreach (var obj in list)
                    {
                        var tempObjClone = ObjectUtils.Copy(obj);
                        var tempValue = GetPropertyValue(tempObjClone, this.ValueMember);
                        if (tempValue != null && tempValue.Equals(s))
                        {
                            selectedBoxSource.Add(tempObjClone);
                            delObjectList.Add(obj);
                            break;
                        }
                    }
                }
                foreach (var obj in delObjectList)
                {
                    list.Remove(obj);
                }
                if (selectedBoxSource.Count > 0)
                {
                    this.selectListBox.DisplayMember = this.DisplayMember;
                    this.selectListBox.ValueMember = this.ValueMember;
                }
                sourceBindingSource.ResetBindings(true);
                selectBindingSource.ResetBindings(true);
                RefreshLabelInfo();
            }
        }

        /// <summary>
        /// 获取一个类指定的属性值
        /// </summary>
        /// <param name="info">object对象</param>
        /// <param name="field">属性名称</param>
        /// <returns></returns>
        public static object GetPropertyValue(object info, string field)
        {
            if (info == null) return null;
            if (field == null) return null;
            Type t = info.GetType();
            IEnumerable<System.Reflection.PropertyInfo> property = from pi in t.GetProperties() where pi.Name.ToLower() == field.ToLower() select pi;
            return property.First().GetValue(info, null);
        }

        public void RefreshLabelInfo()
        {
            string selectedValue = this.sourceListBox.SelectedValue as string;
            var list = sourceBindingSource.DataSource as IList;
            if (list == null)
            {
                list = new List<object>();
            }
            var selectedBoxSource = selectBindingSource.DataSource as IList;
            if (selectedBoxSource == null)
            {
                selectedBoxSource = new List<object>();
            }
            this.sourceLabel.Text = list.Count > 0 ? string.Format("可选项 {0}", list.Count) : "没有可选项";
            this.selectLabel.Text = selectedBoxSource.Count > 0 ? string.Format("可选项 {0}", selectedBoxSource.Count) : "没有可选项";
        }

        private void OnSourceItemClick(object sender, EventArgs e)
        {
            string selectedValue = this.sourceListBox.SelectedValue as string;
            var list = sourceBindingSource.DataSource as IList;
            if (list == null)
            {
                list = new List<object>();
                sourceBindingSource.DataSource = list;
            }
            var selectedBoxSource = selectBindingSource.DataSource as IList;
            if (selectedBoxSource == null)
            {
                selectedBoxSource = new List<object>();
                selectBindingSource.DataSource = selectedBoxSource;
            }

            List<object> delObjectList = new List<object>();
            foreach (var obj in list)
            {
                var tempObjClone = ObjectUtils.Copy(obj);
                var tempValue = GetPropertyValue(tempObjClone, this.ValueMember);
                if (tempValue != null && tempValue.Equals(selectedValue))
                {
                    selectedBoxSource.Add(tempObjClone);
                    delObjectList.Add(obj);
                    break;
                }
            }
            foreach (var obj in delObjectList)
            {
                list.Remove(obj);
            }
            if (selectedBoxSource.Count > 0)
            {
                this.selectListBox.DisplayMember = this.DisplayMember;
                this.selectListBox.ValueMember = this.ValueMember;
            }
            sourceBindingSource.ResetBindings(true);
            selectBindingSource.ResetBindings(true);
            RefreshLabelInfo();
        }

        private void OnSelectItemClick(object sender, EventArgs e)
        {
            string selectedValue = this.selectListBox.SelectedValue as string;

            var selectedBoxSource = selectBindingSource.DataSource as IList;
            if (selectedBoxSource == null)
            {
                return;
            }

            var list = sourceBindingSource.DataSource as IList;
            if (list == null)
            {
                list = new List<object>();
                sourceBindingSource.DataSource = list;
            }
            List<object> delObjectList = new List<object>();
            foreach (var obj in selectedBoxSource)
            {
                var tempObjClone = ObjectUtils.Copy(obj);
                var tempValue = GetPropertyValue(tempObjClone, this.ValueMember);
                if (tempValue != null && tempValue.Equals(selectedValue))
                {
                    list.Add(tempObjClone);
                    delObjectList.Add(obj);
                    break;
                }
            }
            foreach (var obj in delObjectList)
            {
                selectedBoxSource.Remove(obj);
            }
            sourceBindingSource.ResetBindings(true);
            selectBindingSource.ResetBindings(true);
            RefreshLabelInfo();
        }

        private void OnSourceAll2SelectClick(object sender, EventArgs e)
        {
            var list = sourceBindingSource.DataSource as IList;
            if (list == null)
            {
                list = new List<object>();
                sourceBindingSource.DataSource = list;
            }
            var selectedBoxSource = selectBindingSource.DataSource as IList;
            if (selectedBoxSource == null)
            {
                selectedBoxSource = new List<object>();
                selectBindingSource.DataSource = selectedBoxSource;
            }

            foreach(var item in list)
            {
                selectedBoxSource.Add(item);
            }
            if (selectedBoxSource.Count > 0)
            {
                this.selectListBox.DisplayMember = this.DisplayMember;
                this.selectListBox.ValueMember = this.ValueMember;
            }
            this.DataSource = null;
            sourceBindingSource.ResetBindings(true);
            selectBindingSource.ResetBindings(true);
            RefreshLabelInfo();

        }

        private void OnSelect2SouceClick(object sender, EventArgs e)
        {
            var list = sourceBindingSource.DataSource as IList;
            if(list == null)
            {
                list = new List<object>();
                sourceBindingSource.DataSource = list;
            }
            var selectedBoxSource = selectBindingSource.DataSource as IList;
            if (selectedBoxSource == null)
            {
                selectedBoxSource = new List<object>();
                selectBindingSource.DataSource = selectedBoxSource;
            }

            foreach(var item in selectedBoxSource)
            {
                list.Add(item);
            }
            selectBindingSource.DataSource = null;
            sourceBindingSource.ResetBindings(true);
            selectBindingSource.ResetBindings(true);
            RefreshLabelInfo();
        }

    }
}