Discuz重写的TextBox控件

Discuz重写的TextBox控件,非常好用,就是看不懂,有高手能看懂的，给解释下!

using System;
using System.Collections;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.ComponentModel;

namespace Discuz.Admin.Controls
{
    /**//// <summary>
    /// TextBox 控件
    /// </summary>
    [DefaultProperty("Text"),ToolboxData("<{0}:TextBox runat=server></{0}:TextBox>")]
    public class TextBox : System.Web.UI.WebControls.WebControl,IPostBackDataHandler
    {
        protected System.Web.UI.WebControls.TextBox tb=new System.Web.UI.WebControls.TextBox();
        protected System.Web.UI.WebControls.RequiredFieldValidator RequiredFieldValidator1=new RequiredFieldValidator();
        protected System.Web.UI.WebControls.RegularExpressionValidator RegularExpressionValidator1=new RegularExpressionValidator();
        protected System.Web.UI.WebControls.RangeValidator rangevalidator=new System.Web.UI.WebControls.RangeValidator();

        public TextBox(): base()
        {  
            tb.Attributes.Add("onfocus","this.className='colorfocus';"); 
            tb.Attributes.Add("onblur","this.className='colorblur';"); 
            
            tb.CssClass="colorblur";
        }

        public void AddAttributes(string key ,string valuestr)
        {
            tb.Attributes.Add(key,valuestr);
        }

        
        //在属性RequiredFieldType后进行调用
        public void  SetValiateControls()
        {
            this.Controls.Add(tb);
        
            if((RequiredFieldType!=null)&&(RequiredFieldType!="")&&(RequiredFieldType!="暂无校验"))
            {
                RegularExpressionValidator1.Display=System.Web.UI.WebControls.ValidatorDisplay.Dynamic;
                RegularExpressionValidator1.ControlToValidate=tb.ID;
                RegularExpressionValidator1.ForeColor = System.Drawing.Color.Black;

                
                switch (RequiredFieldType)
                {
                    case "数据校验":
                    {
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:"^[-]?\\d+[.]?\\d*$";
                        RegularExpressionValidator1.ErrorMessage=" 数字的格式不正确";break; 
                    }
                    case "电子邮箱":
                    {   //RegularExpressionValidator1.ValidationExpression="^\\w+((-\\w+)|(\\.\\w+))*\\@[A-Za-z0-9]+((\\.|-)[A-Za-z0-9]+)*\\.[A-Za-z0-9]+$";
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:(@"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
                        RegularExpressionValidator1.ErrorMessage=" 邮箱的格式不正确";break; 
                    }
                    case "移动手机":
                    {
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:"\\d{11}";
                        RegularExpressionValidator1.ErrorMessage=" 手机的位数应为11位!";break; 
                    }
                    case "家用电话":
                    {
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:"((\\(\\d{3}\\) ?)|(\\d{3}-))?\\d{3}-\\d{4}|((\\(\\d{3}\\) ?)|(\\d{4}-))?\\d{4}-\\d{4}";
                        RegularExpressionValidator1.ErrorMessage=" 请依 (XXX)XXX-XXXX 格式或 (XXX)XXXX-XXXX 输入电话号码！";break; 
                    }
                    case "身份证号码":
                    {
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:"^\\d{15}$|^\\d{18}$";
                        RegularExpressionValidator1.ErrorMessage=" 请依15或18位数据的身份证号！";break; 
                    }
                    case "网页地址":
                    {
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:@"^(http|https)\://([a-zA-Z0-9\.\-]+(\:[a-zA-Z0-9\.&%\$\-]+)*@)*((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|localhost|([a-zA-Z0-9\-]+\.)*[a-zA-Z0-9\-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{1,10}))(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\?\'\\\+&%\$#\=~_\-]+))*$";
                        RegularExpressionValidator1.ErrorMessage=" 请输入正确的网址";break; 

                    }
                    case "日期":
                    {   //RegularExpressionValidator1.ValidationExpression="\\d{4}-\\d{1,2}-\\d{1,2}";
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:@"^((((1[6-9]|[2-9]\d)\d{2})-(0?[13578]|1[02])-(0?[1-9]|[12]\d|3[01]))|(((1[6-9]|[2-9]\d)\d{2})-(0?[13456789]|1[012])-(0?[1-9]|[12]\d|30))|(((1[6-9]|[2-9]\d)\d{2})-0?2-(0?[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))-0?2-29-))$"; 
                        RegularExpressionValidator1.ErrorMessage=" 请输入正确的日期,如:2006-1-1";break; 
                    }
                    case "日期时间":
                    {
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:@"^((((1[6-9]|[2-9]\d)\d{2})-(0?[13578]|1[02])-(0?[1-9]|[12]\d|3[01]))|(((1[6-9]|[2-9]\d)\d{2})-(0?[13456789]|1[012])-(0?[1-9]|[12]\d|30))|(((1[6-9]|[2-9]\d)\d{2})-0?2-(0?[1-9]|1\d|2[0-8]))|(((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))-0?2-29-)) (20|21|22|23|[0-1]?\d):[0-5]?\d:[0-5]?\d$"; 
                        RegularExpressionValidator1.ErrorMessage=" 请输入正确的日期,如: 2006-1-1 23:59:59";break; 
                    }
                    case "金额":
                    {
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:"^([0-9]|[0-9].[0-9]{0-2}|[1-9][0-9]*.[0-9]{0,2})$";
                        RegularExpressionValidator1.ErrorMessage=" 请输入正确的金额";break; 
                    }
                    case "IP地址":
                    {
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:@"^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$";
                        RegularExpressionValidator1.ErrorMessage=" 请输入正确的IP地址";break; 
                    }
                    case "IP地址带端口":
                    {
                        RegularExpressionValidator1.ValidationExpression=(this.ValidationExpression!=null)?this.ValidationExpression:@"^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9]):\d{1,5}?$";
                        RegularExpressionValidator1.ErrorMessage=" 请输入正确的带端口的IP地址";break; 
                    }
                }
                this.Controls.Add(RegularExpressionValidator1);
            }

            switch (CanBeNull)
            {
                case "可为空":    {    break;     }
                case "必填":
                {
                    RequiredFieldValidator1.Display=System.Web.UI.WebControls.ValidatorDisplay.Dynamic;
                    RequiredFieldValidator1.ControlToValidate=tb.ID;
                    RequiredFieldValidator1.ForeColor=System.Drawing.Color.Black;
                    RequiredFieldValidator1.ErrorMessage="请务必输入内容!";
                    this.Controls.Add(RequiredFieldValidator1);
                    break; 
                }
                default :    {    break;     }
            }
        
            
            this.BorderStyle=BorderStyle.Dotted; 
            this.BorderWidth=1; 
            
        }

        [Bindable(true),Category("Appearance"),DefaultValue("")] 
        public string SetFocusButtonID
        {
            get
            {
                object o = ViewState[this.ClientID+"_SetFocusButtonID"];
                return (o==null)?"":o.ToString(); 
            }
            set
            {
                ViewState[this.ClientID+"_SetFocusButtonID"] = value;
                if(value!="")
                {
                    tb.Attributes.Add("onkeydown","if(event.keyCode==13){document.getElementById('"+value+"').focus();}");
                }
            }
        }

        [Bindable(true),Category("Appearance"),DefaultValue("")] 
        public override string ID
        {
            get
            {
                return tb.ID;
            }
            set
            {
                tb.ID = value;
            }
        }


        //调控件的最大长度属性
        [Bindable(true),Category("Appearance"),DefaultValue("")] 
        public int MaxLength
        {   
            get 
            { 
                object o =ViewState["TextBox_MaxLength"]; 
                if(o!=null)
                {
                    int maxlength= Convert.ToInt32(o.ToString()); 
                    AddAttributes("maxlength",maxlength.ToString());
                    return  maxlength;
                }
                else
                {
                    return -1;
                }
            } 
            set 
            { 
                ViewState["TextBox_MaxLength"] = value; 
                AddAttributes("maxlength",value.ToString());
            } 
        }

        
        //调控件的TextMode属性
        [Bindable(false),Category("Behavior"),DefaultValue(""),TypeConverter(typeof(TextModeFieldTypeControlsConverter)),Description("要滚动的对象。")] 
        public string TextMode  //要进行校验的表达式
        { 
            get
            {
                return tb.TextMode.ToString();
            }
            set
            {
                if (value=="Password")     tb.TextMode =TextBoxMode.Password;
                if (value=="MultiLine") 
                {
                    tb.TextMode =TextBoxMode.MultiLine;
                    tb.Attributes.Add("onkeyup","return isMaxLen(this)");
                }
                if (value=="SingleLine")   tb.TextMode =TextBoxMode.SingleLine;
            }
        }
        
        [Bindable(false),Category("Behavior"),DefaultValue(""),TypeConverter(typeof(RequiredFieldTypeControlsConverter)),Description("要滚动的对象。")] 
        public string RequiredFieldType  //要进行校验的表达式
        { 
            get 
            { 
                object o =  ViewState["RequiredFieldType"]; 
                return (o==null)?"":o.ToString(); 
            } 
            set 
            { 
                ViewState["RequiredFieldType"] = value; 
                SetValiateControls();
            } 
        } 
        
    
        
        [Bindable(false),Category("Behavior"),DefaultValue("可为空"),TypeConverter(typeof(CanBeNullControlsConverter)),Description("要滚动的对象。")]
        public string CanBeNull  //要表达式是否可以为空
        { 
            get 
            { 
                object o =  ViewState["CanBeNull"]; 
                return (o==null)?"":o.ToString(); 
            } 
            set 
            { 
                ViewState["CanBeNull"] = value; 
                SetValiateControls();
            } 
        } 

    
        //是否进行 ' 号替换
        [Bindable(true),Category("Appearance"),DefaultValue("")] 
        public bool IsReplaceInvertedComma
        {
            get 
            { 
                object  o= ViewState["IsReplaceInvertedComma"]; 
                if(o==null||o.ToString().Trim()=="")
                {
                    return true;
                }
                else
                { 
                    return o.ToString().ToLower()=="true"?true:false;    
                }
            } 
            set 
            { 
                ViewState["IsReplaceInvertedComma"] = value; 
            } 
        }


        
        [Bindable(true),Category("Appearance"),DefaultValue("")] 
        public string ValidationExpression
        {
            get 
            { 
                object  o= ViewState["ValidationExpression"]; 
                if(o==null||o.ToString().Trim()=="")
                {
                    return null;
                }
                else
                { 
                    return o.ToString().ToLower();
                }
            } 
            set 
            { 
                ViewState["ValidationExpression"] = value; 
            } 
        }
        
        [Bindable(true),Category("Appearance"),DefaultValue("")] 
        public string Text 
        {
            get
            {

                if(this.RequiredFieldType == "日期")
                {
                    try
                    {
                        return DateTime.Parse(tb.Text).ToString("yyyy-MM-dd");
                    }
                    catch
                    {
                        return "1900-1-1";
                    }
                }

                if(this.RequiredFieldType == "日期时间")
                {
                    try
                    {
                        return DateTime.Parse(tb.Text).ToString("yyyy-MM-dd HH:mm:ss");
                    }
                    catch
                    {
                        return "1900-1-1 00:00:00";
                    }
                }
                else
                {
                    return IsReplaceInvertedComma?tb.Text.Replace("'","''").Trim():tb.Text;
                }
            }
            set
            {
                if(this.RequiredFieldType.IndexOf("日期")>=0)
                {
                    try
                    {
                        tb.Text = DateTime.Parse(value).ToString("yyyy-MM-dd");
                    }
                    catch
                    {
                        tb.Text = "";
                    }
                }

                if(this.RequiredFieldType.IndexOf("日期时间")>=0)
                {
                    try
                    {
                        tb.Text = DateTime.Parse(value).ToString("yyyy-MM-dd HH:mm:ss");
                    }
                    catch
                    {
                        tb.Text = "";
                    }
                }
                else
                {
                    tb.Text=value;
                }
            }
        
        }

        //调控件的高度属性
        [Bindable(false),Category("Appearance"),DefaultValue("")] 
        override public Unit Height
        {
            get
            {
                return tb.Height;
            }
            set
            {
                tb.Height = value;
            }
        }

        //调控件的宽度属性
        [Bindable(true),Category("Appearance"),DefaultValue("")] 
        override public Unit Width
        {
            get
            {
                return tb.Width;
            }
            set
            {
                tb.Width = value;
            }
        }

        private int _rows=5;
        //调控件的宽度属性
        [Bindable(true),Category("Appearance"),DefaultValue(1)] 
        public int  Rows
        {
            get
            {
                return _rows;
            }
            set
            {
                _rows = value;
            }
        }

        private int _cols=45;
        //调控件的宽度属性
        [Bindable(true),Category("Appearance"),DefaultValue(30)] 
        public int  Cols
        {
            get
            {
                return _cols;
            }
            set
            {
                _cols = value;
            }
        }
    

        private int _size=45;
        //调控件的宽度属性
        [Bindable(true),Category("Appearance"),DefaultValue(30)] 
        public int  Size
        {
            get
            {
                return _size;
            }
            set
            {
                _size = value;
            }
        }
    

        //调控件的宽度属性
        [Bindable(true),Category("Appearance"),DefaultValue(true)] 
        public override bool  Enabled
        {
            get
            {
                return tb.Enabled;
            }
            set
            {
                tb.Enabled = value;
            }
        }
    

        private string _maximumValue = null;

        [Bindable(true),Category("Appearance"),DefaultValue(null)] 
        public string MaximumValue
        {
            get
            {
                return _maximumValue;
            }
            set
            {
                _maximumValue = value;
            }
        }

        private string _minimumValue = null;
        [Bindable(true),Category("Appearance"),DefaultValue(null)] 
        public string MinimumValue
        {
            get
            {
                return _minimumValue;
            }
            set
            {
                _minimumValue = value;
            }
        }


        

        /**//// <summary> 
        /// 将此控件呈现给指定的输出参数。
        /// </summary>
        /// <param name="output"> 要写出到的 HTML 编写器 </param>
        protected override void Render(HtmlTextWriter output)
        {
            //output.Write(Text);
            if(this.TextMode=="MultiLine")
            {
                output.WriteLine("<script type=\"text/javascript\">");
                output.WriteLine("function isMaxLen(o){");
                output.WriteLine("var nMaxLen=o.getAttribute? parseInt(o.getAttribute(\"maxlength\")):\"\";");
                output.WriteLine(" if(o.getAttribute && o.value.length>nMaxLen){");
                output.WriteLine(" o.value=o.value.substring(0,nMaxLen)");
                output.WriteLine("}}</script>");

                this.AddAttributes("rows",Rows.ToString());
                this.AddAttributes("cols",Cols.ToString());
            }
            else
            {
                if(this.Width.Value.ToString()!="")
                {
                    if(Width.Type.ToString()!="")
                    {
                        this.AddAttributes("SIZE",(Width.Value/10).ToString()+(Width.Type.ToString()=="Pixel"?"px":"%"));
                    }
                
                    else
                    {
                        this.AddAttributes("SIZE",(Width.Value/10).ToString()+"px");
                    }
                }

                if(this.Size.ToString()!="")
                {
                    this.AddAttributes("SIZE",this.Size.ToString());
                }
            }
            
            //当指定了输入框的最小或最大值时,则加入校验范围项
            if(this.MaximumValue!=null||this.MinimumValue!=null)
            {
                rangevalidator.ControlToValidate=tb.ID;
                rangevalidator.Type=ValidationDataType.Double;
                rangevalidator.ForeColor=System.Drawing.Color.Black;

                if(this.MaximumValue!=null&&this.MinimumValue!=null)
                {
                    rangevalidator.MaximumValue=this.MaximumValue;
                    rangevalidator.MinimumValue=this.MinimumValue;
                    rangevalidator.ErrorMessage=" 当前输入数据应在"+this.MinimumValue+"和"+this.MaximumValue+"之间!";
                }
                else
                {
                    if(this.MaximumValue!=null)
                    {
                        rangevalidator.MaximumValue=this.MaximumValue;
                        rangevalidator.ErrorMessage=" 当前输入数据允许最大值为"+this.MaximumValue;
                    }
                    if(this.MinimumValue!=null)
                    {
                        rangevalidator.MinimumValue=this.MinimumValue;
                        rangevalidator.ErrorMessage=" 当前输入数据允许最小值为"+this.MinimumValue;
                    }
                }
                rangevalidator.Display=ValidatorDisplay.Static;
                this.Controls.Add(rangevalidator);
            }

            
            RenderChildren(output);
        }


        IPostBackDataHandler 成员#region IPostBackDataHandler 成员

 

        public void RaisePostDataChangedEvent()
        {}


        public bool LoadPostData(string postDataKey, System.Collections.Specialized.NameValueCollection postCollection)
        {
            string presentValue = this.tb.Text;
            string postedValue = postCollection[postDataKey];

            if (!presentValue.Equals(postedValue))//如果回发数据不等于原有数据
            {
                this.Text = postedValue;
                this.tb.Text = postedValue;
                return true;
            }
            return false;

        }
        #endregion

    }

    public class RequiredFieldTypeControlsConverter:StringConverter
    {
        public RequiredFieldTypeControlsConverter()    {}

        public override bool GetStandardValuesSupported(ITypeDescriptorContext context) 
        { 
            return true; 
        } 
        public override System.ComponentModel.TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) 
        { 
            ArrayList controlsArray = new ArrayList(); 
            controlsArray.Add("暂无校验"); 
            controlsArray.Add("数据校验");
            controlsArray.Add("电子邮箱");
            controlsArray.Add("移动手机"); 
            controlsArray.Add("家用电话"); 
            controlsArray.Add("身份证号码"); 
            controlsArray.Add("网页地址"); 
            controlsArray.Add("日期"); 
            controlsArray.Add("日期时间"); 
            controlsArray.Add("金额"); 
            controlsArray.Add("IP地址"); 
            controlsArray.Add("IP地址带端口"); 
            return new StandardValuesCollection(controlsArray); 
             
        } 
        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) 
        { 
            return false; 
        } 
    }


    public class CanBeNullControlsConverter:StringConverter
    {
        public CanBeNullControlsConverter()    {}

        public override bool GetStandardValuesSupported(ITypeDescriptorContext context) 
        { 
            return true; 
        } 
    
        public override System.ComponentModel.TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) 
        { 
            ArrayList controlsArray = new ArrayList(); 
            controlsArray.Add("可为空"); 
            controlsArray.Add("必填"); 
        
    　        return new StandardValuesCollection(controlsArray); 
             
        } 

        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) 
        { 
            return false; 
        } 
    }


    public class FormControlsConverter:StringConverter 
    { 
        public FormControlsConverter() 
        { 
        } 

        public override bool GetStandardValuesSupported(ITypeDescriptorContext context) 
        { 
            return true; 
        } 

        public override System.ComponentModel.TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) 
        { 
            ControlCollection Controls = ((Page)context.Container.Components[0]).Controls; 
            ArrayList controlsArray = new ArrayList(); 
            for(int i = 0 ;i < Controls.Count ; i++) 
            { 
                if((Controls[i] is HtmlTable 
                    || Controls[i] is HtmlForm 
                    || Controls[i] is HtmlGenericControl 
                    || Controls[i] is HtmlImage 
                    || Controls[i] is Label 
                    || Controls[i] is DataGrid 
                    || Controls[i] is DataList 
                    || Controls[i] is Table 
                    || Controls[i] is Repeater 
                    || Controls[i] is Image 
                    || Controls[i] is Panel 
                    || Controls[i] is PlaceHolder 
                    || Controls[i] is Calendar 
                    || Controls[i] is AdRotator 
                    || Controls[i] is Xml 
                    )) 
                { 
                    controlsArray.Add(Controls[i].ClientID); 
                } 
            } 
            return new StandardValuesCollection(controlsArray); 
             
        }
 
        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) 
        { 
            return false; 
        } 
    } 


    public class TextModeFieldTypeControlsConverter:StringConverter 
    { 
        public TextModeFieldTypeControlsConverter() 
        { 
        } 

        public override bool GetStandardValuesSupported(ITypeDescriptorContext context) 
        { 
            return true; 
        } 

        public override System.ComponentModel.TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context) 
        { 
            ArrayList controlsArray = new ArrayList(); 
            controlsArray.Add("Password"); 
            controlsArray.Add("SingleLine"); 
            controlsArray.Add("MultiLine"); 
        
    　        return new StandardValuesCollection(controlsArray); 
             
        } 
        public override bool GetStandardValuesExclusive(ITypeDescriptorContext context) 
        { 
            return false; 
        } 
    } 
    
}