lj_plc/Controls/Mesnac.Controls.Default/MCCombobox.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data;
using Mesnac.Controls.Base;
using System.Drawing;
using System.Text.RegularExpressions;

namespace Mesnac.Controls.Default
{
    [ToolboxBitmap(typeof(ComboBox))]
    public partial class MCCombobox : ComboBox, IBaseControl
    {
        #region 字段定义

        private bool _mcVisible = true; //保存可见性
        private bool _mcEnabled = true; //保存可用性
        private bool _isValid = true;   //保存有效性
        private bool _isEventValid = true;  //保存事件有效性
        private bool _isEmpty = true; //允许
        private string _displayFiled;           //显示字段
        private string _valueFiled;             //值字段
        private bool isTextCorrect;     //判断字符是否存在下拉列表
        private bool allowTypeAllSymbols = true;
        private Color BorderColor = Color.FromArgb(107, 191, 111);
        List<ComboboxItems> _comboboxList = new List<ComboboxItems>();
        private List<DesignAction> _selectedChanged = new List<DesignAction>();

        #endregion

        #region 构造方法

        public MCCombobox()
        {
            InitializeComponent();
            //if (this._comboboxList.Count > 0 && ((DataTable)this.BindDataSource).TableName == "")
            //{
            //    this.datas
            //}
        }

        public MCCombobox(IContainer container)
        {
            container.Add(this);
            InitializeComponent();
        }

        #endregion
        
        #region 属性定义

        /// <summary>
        /// 是否可以输入选项以外的字符
        /// </summary>
        [Browsable(true)]
        [Description("是否可输入额外字符"), Category("Behavior")]
        public bool AllowTypeAllSymbols
        {
            set
            {
                allowTypeAllSymbols = value;
            }
            get
            {
                return allowTypeAllSymbols;
            }
        }

        [Description("组合框选项"), Category("Data")]
        public List<ComboboxItems> ComboboxList
        {
            get { return _comboboxList; }
            set { _comboboxList = value; }
        }

        [Description("是否允许为空"), Category("Behavior")]
        public bool IsEmpty
        {
            get { return _isEmpty; }
            set { _isEmpty = value; }
        }

        [Description("文本字段"), Category("Data")]
        public string DisplayFiled
        {
            get { return _displayFiled; }
            set { _displayFiled = value; }
        }

        [Description("值字段"), Category("Data")]
        public string ValueFiled
        {
            get { return _valueFiled; }
            set { _valueFiled = value; }
        }

        #endregion

        #region 事件定义
        
        public List<DesignAction> SelectedChanged
        {
            get { return _selectedChanged; }
            set { _selectedChanged = value; }
        }

        #endregion

        #region 接口实现

        public string MCKey
        {
            get;
            set;
        }

        public object MCValue
        {
            get
            {
                return this.SelectedValue == null ? "" : this.SelectedValue.ToString();
            }
            set
            {
                if (value != null)
                {
                    this.SelectedValue = value;
                }
                else
                {
                    if (this.Items.Count > 0)
                    {
                        this.SelectedIndex = 0;
                    }
                }
            }
        }

        public IBaseControl MCRoot
        {
            get
            {
                return null;
            }
            set
            {
                ;
            }
        }

        [TypeConverter(typeof(DataSourceConverter))]
        [Description("数据连接"), Category("Data")]
        public string MCDataSourceID
        {
            get;
            set;
        }
        public MCDataSource MCDataSource
        {
            get;
            set;
        }

        [Description("是否为数据库控件"), Category("Data")]
        public bool IsDbControl
        {
            get;
            set;
        }

        [Description("初始化SQL"), Category("Data")]
        public string InitDataSource
        {
            get;
            set;
        }

        [Description("执行SQL"), Category("Data")]
        public string ActionDataSource
        {
            get;
            set;
        }

        [Description("绑定数据源"), Category("Data")]
        public object BindDataSource
        {
            get { return this.DataSource; }
            set
            {
                if (value is List<ComboboxItems> || (value is DataTable && this.DisplayFiled == null && this.ValueFiled == null))
                {
                    this.DisplayMember = "CmbDisplay";
                    this.ValueMember = "CmbValue";
                    this.DataSource = this.ComboboxList;
                }
                else
                {
                    this.DataSource = null;
                    this.DisplayMember = this.DisplayFiled;
                    this.ValueMember = this.ValueFiled;
                    this.DataSource = value == null ? new DataTable() : (DataTable)value;
                    this.AutoCompleteSource = AutoCompleteSource.ListItems;
                    this.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
                }
            }
        }

        [Description("操作类型"), Category("Data")]
        public DbOptionTypes DbOptionType
        {
            get;
            set;
        }

        [Description("是否可见"), Category("Behavior")]
        public bool MCVisible
        {
            get
            {
                return this._mcVisible;
            }
            set
            {
                this._mcVisible = value == null ? true : value;
                if (this.Site.DesignMode)
                {
                    this.Visible = true;
                }
                else
                {
                    this.Visible = _mcVisible;
                }
            }
        }

        [Description("是否可用"), Category("Behavior")]
        public bool MCEnabled
        {
            get
            {
                return this._mcEnabled;
            }
            set
            {
                this._mcEnabled = value == null ? true : value;
                if (this.Site.DesignMode)
                {
                    this.Enabled = true;
                }
                else
                {
                    this.Enabled = this._mcEnabled;

                }
            }
        }

        public bool IsValid
        {
            get { return _isValid; }
            set { _isValid = value; }
        }

        public bool IsEventValid
        {
            get { return this._isEventValid; }
            set { this._isEventValid = value; }
        }

        #endregion

        #region 事件处理
        protected override void OnLostFocus(EventArgs e)
        {
            if (!_isEmpty)
            {
                if (this.Text == string.Empty && this.DropDownStyle.ToString() != "DropDownList")
                {
                    this.BorderColor = Color.Red;
                    errorProvider1.SetIconAlignment((Control)this, ErrorIconAlignment.MiddleRight);
                    errorProvider1.SetError((Control)this, "不允许为空！");
                    _isValid = false;
                    return;
                }
                else
                {
                    errorProvider1.SetIconAlignment((Control)this, ErrorIconAlignment.MiddleRight);
                    errorProvider1.SetError((Control)this, "");
                    _isValid = true;
                }
            }
            base.Invalidate();
            base.OnLostFocus(e);
        }

        #region 自动完成
        protected override void OnKeyPress(KeyPressEventArgs e)
        {
            if (!allowTypeAllSymbols)
            {
                isTextCorrect = false;
                if (!char.IsControl(e.KeyChar))
                {
                    string actual = this.Text.Substring(0, SelectionStart) + e.KeyChar;

                    // 从第一个字符串开始匹配
                    int index = this.FindString(actual);

                    // 如果找到匹配字符串，设置为true
                    if (index > -1)
                    {
                        isTextCorrect = true;
                        base.OnKeyPress(e);
                    }
                    else
                        e.Handled = true;
                }

            }
        }

        protected override void OnKeyUp(KeyEventArgs e)
        {
            //int index;
            //string actual;
            //string found;

            //// 这些键不坐任何事情
            //if ((e.KeyCode == Keys.Back) ||
            //    (e.KeyCode == Keys.Left) ||
            //    (e.KeyCode == Keys.Right) ||
            //    (e.KeyCode == Keys.Up) ||
            //    (e.KeyCode == Keys.Down) ||
            //    (e.KeyCode == Keys.Delete) ||
            //    (e.KeyCode == Keys.PageUp) ||
            //    (e.KeyCode == Keys.PageDown) ||
            //    (e.KeyCode == Keys.Home) ||
            //    (e.KeyCode == Keys.End) ||
            //    (e.KeyCode == Keys.ShiftKey) ||
            //    (e.KeyCode == Keys.Tab) ||
            //    (e.KeyCode == Keys.Menu))
            //{
            //    return;
            //}

            //// 已输入的文本
            //actual = this.Text.Substring(0, this.SelectionStart);

            //// 从第一列开始找
            //index = this.FindString(actual);

            ////找到
            //if (index > -1)
            //{
            //    if ((!allowTypeAllSymbols && isTextCorrect) || (allowTypeAllSymbols))
            //    {
            //        if (this.DataSource != null && this.DisplayMember != "")
            //            found = ((DataRowView)(this.Items[index]))[this.DisplayMember].ToString();
            //        else
            //            found = this.Items[index].ToString();

            //        this.SelectedIndex = index;
            //        this.Text = found;
            //        //选中剩余的字符
            //        this.SelectionStart = actual.Length;
            //        this.SelectionLength = found.Length;
            //        base.OnKeyUp(e);
            //    }
            //}
        }
        #endregion

        #endregion
    }

    [Serializable]
    public class ComboboxItems
    {
        private string cmbValue;

        public string CmbValue
        {
            get { return cmbValue; }
            set { cmbValue = value; }
        }

        private string cmbDisplay;

        public string CmbDisplay
        {
            get { return cmbDisplay; }
            set { cmbDisplay = value; }
        }
    }
}