using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Drawing;
using System.Globalization;
namespace WebFrame
{
public class UserLogin : Control, IPostBackDataHandler, IPostBackEventHandler
{
#region 定義類變量
private static readonly object InClick = new object();
private static readonly object OutClick = new object();
private string _userName;
private string _passWord;
private int iButton = 0;
#endregion
#region 獲得控件的方法集
public event EventHandler LoginIn
{
add
{
Events.AddHandler(InClick,value);
}
remove
{
Events.RemoveHandler(InClick,value);
}
}
public event EventHandler LoginOut
{
add
{
Events.AddHandler(OutClick,value);
}
remove
{
Events.RemoveHandler(OutClick,value);
}
}
#endregion
#region 定義IPostBackDataHandler與IPostBackEventHandler的方法
bool IPostBackDataHandler.LoadPostData(string postDataKey,NameValueCollection values)
{
_userName = values[this.UserInputName];
_passWord = values[this.PassWordInputName];
string buttonIn = values[this.InButtonName];
bool buttonInClick = (buttonIn!=null)&&(buttonIn.Length!=0);
if(buttonInClick)
{
iButton = 1;
Page.RegisterRequiresRaiseEvent(this);
}
string buttonOut = values[this.OutButtonName];
bool buttonOutClick = (buttonOut!=null)&&(buttonOut.Length!=0);
if(buttonOutClick)
{
iButton = 2;
Page.RegisterRequiresRaiseEvent(this);
}
return false;
}
void IPostBackDataHandler.RaisePostDataChangedEvent()
{
}
void IPostBackEventHandler.RaisePostBackEvent(string eventArgument)
{
OnLogin(EventArgs.Empty);
}
protected virtual void OnLogin(EventArgs e)
{
EventHandler clickButton = null;
if(iButton==2)
clickButton = (EventHandler)Events[OutClick];
else if(iButton==1)
clickButton = (EventHandler)Events[InClick];
if(clickButton!=null)
clickButton(this,e);
}
#endregion
#region 將控件加入頁面時發生
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
//將控件在頁面注冊為回傳時需要處理
Page.RegisterRequiresPostBack(this);
}
#endregion
#region 定義控件屬性
public virtual string UserLabelText
{
get
{
string s = (string)ViewState["UserLabelText"];
return ((s==null)?"UserName":s);
}
set
{
ViewState["UserLabelText"] = value;
}
}
public virtual string PassWordLabelText
{
get
{
string s = (string)ViewState["PassWordLabelText"];
return ((s==null)?"PassWord":s);
}
set
{
ViewState["PassWordLabelText"] = value;
}
}
public string UserInputId
{
get
{
return (this.UniqueID + "_UserName");
}
}
public string UserInputName
{
get
{
return (this.UniqueID + ":UserName");
}
}
public string UserName
{
get
{
return ((_userName==null)?String.Empty:_userName);
}
}
public string PassWordInputId
{
get
{
return (this.UniqueID + "_PassWord");
}
}
public string PassWordInputName
{
get
{
return (this.UniqueID + ":PassWord");
}
}
public string PassWord
{
get
{
return ((_passWord==null)?String.Empty:_passWord);
}
}
public string InButtonId
{
get
{
return (this.UniqueID + "_InButton");
}
}
public string InButtonName
{
get
{
return (this.UniqueID + ":InButton");
}
}
public virtual string InButtonText
{
get
{
string s = (string)ViewState["InButtonText"];
return ((s==null)?"Login In":s);
}
set
{
ViewState["InButtonText"] = value;
}
}
public string OutButtonId
{
get
{
return (this.UniqueID + "_OutButton");
}
}
public string OutButtonName
{
get
{
return (this.UniqueID + ":OutButton");
}
}
public virtual string OutButtonText
{
get
{
string s = (string)ViewState["OutButtonText"];
return ((s==null)?"Login Out":s);
}
set
{
ViewState["OutButtonText"] = value;
}
}
[
Bindable(true),
Category("Appearance"),
DefaultValue(typeof(Color),""),
Description("the background color"),
TypeConverter(typeof(WebColorConverter))
]
public Color BackColor
{
get
{
object o = ViewState["BackColor"];
return (o==null)?Color.Empty:(Color)o;
}
set
{
ViewState["BackColor"] = value;
}
}
[
Bindable(true),
Category("Appearance"),
DefaultValue(typeof(Color),""),
Description("the border color"),
TypeConverter(typeof(WebColorConverter))
]
public Color BorderColor
{
get
{
object o = ViewState["BorderColor"];
return (o==null)?Color.Empty:(Color)o;
}
set
{
ViewState["BorderColor"] = value;
}
}
[
Bindable(true),
Category("Appearance"),
DefaultValue(BorderStyle.NotSet),
Description("the border style"),
]
public BorderStyle BorderStyle
{
get
{
object o = ViewState["BorderStyle"];
return (o==null)?BorderStyle.None:(BorderStyle)o;
}
set
{
ViewState["BorderStyle"] = value;
}
}
[
Bindable(true),
Category("Appearance"),
DefaultValue(typeof(Unit),""),
Description("the border width"),
]
public Unit BorderWidth
{
get
{
object o = ViewState["BorderWidth"];
return (o==null)?Unit.Empty:(Unit)o;
}
set
{
ViewState["BorderWidth"] = value;
}
}
#endregion
#region 控件輸出
protected override void Render(HtmlTextWriter writer)
{
if(Page!=null)
Page.VerifyRenderingInServerForm(this);
writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing,"1");
if(!BackColor.IsEmpty)
{
writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundColor,ColorTranslator.ToHtml(BackColor));
}
if(!BorderColor.IsEmpty)
{
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderColor,ColorTranslator.ToHtml(BorderColor));
}
if((BorderStyle != BorderStyle.None) && (BorderStyle != BorderStyle.NotSet))
{
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderStyle,BorderStyle.ToString());
}
if(!BorderWidth.IsEmpty)
{
writer.AddStyleAttribute(HtmlTextWriterStyle.BorderWidth,BorderWidth.ToString(CultureInfo.InvariantCulture));
}
writer.AddAttribute(HtmlTextWriterAttribute.Border,"1");
writer.RenderBeginTag(HtmlTextWriterTag.Table);
writer.RenderBeginTag(HtmlTextWriterTag.Tr);
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.Write(this.UserLabelText);
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.AddAttribute(HtmlTextWriterAttribute.Type,"Text");
writer.AddAttribute(HtmlTextWriterAttribute.Id,this.UserInputId);
writer.AddAttribute(HtmlTextWriterAttribute.Name,this.UserInputName);
writer.AddAttribute(HtmlTextWriterAttribute.Value,String.Empty);
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag();
writer.RenderEndTag();
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.Tr);
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.Write(this.PassWordLabelText);
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.AddAttribute(HtmlTextWriterAttribute.Type,"PassWord");
writer.AddAttribute(HtmlTextWriterAttribute.Id,this.PassWordInputId);
writer.AddAttribute(HtmlTextWriterAttribute.Name,this.PassWordInputName);
writer.AddAttribute(HtmlTextWriterAttribute.Value,String.Empty);
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag();
writer.RenderEndTag();
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.Tr);
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.AddAttribute(HtmlTextWriterAttribute.Type,"Submit");
writer.AddAttribute(HtmlTextWriterAttribute.Id,this.InButtonId);
writer.AddAttribute(HtmlTextWriterAttribute.Name,this.InButtonName);
writer.AddAttribute(HtmlTextWriterAttribute.Value,this.InButtonText);
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag();
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.AddAttribute(HtmlTextWriterAttribute.Type,"Submit");
writer.AddAttribute(HtmlTextWriterAttribute.Id,this.OutButtonId);
writer.AddAttribute(HtmlTextWriterAttribute.Name,this.OutButtonName);
writer.AddAttribute(HtmlTextWriterAttribute.Value,this.OutButtonText);
writer.RenderBeginTag(HtmlTextWriterTag.Input);
writer.RenderEndTag();
writer.RenderEndTag();
writer.RenderEndTag();
}
#endregion
}
}
