using System;
using System.ComponentModel;
using System.Drawing;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
// 特别要注意，这里得加上默认命名空间和目录名，因为vs2005编译的时候会给文件加上这些东东的
[assembly: WebResource("XControl.Button.choose.gif", "image/gif")]
[assembly: WebResource("XControl.Button.choose.js", "text/javascript")]
[assembly: WebResource("XControl.Button.choose.css", "text/css", PerformSubstitution = true)]
namespace XControl
{
/// <summary>选择输入控件</summary>
[Description("选择输入控件")]
[ToolboxData("<{0}:ChooseButton runat=server></{0}:ChooseButton>")]
[ToolboxBitmap(typeof(Button))]
[ControlValueProperty("Value")]
[DefaultProperty("Text"), ValidationProperty("Text"), DefaultEvent("ValueChanged")]
public class ChooseButton : CompositeControl, /*IPostBackDataHandler, IEditableTextControl,*/ ITextControl
{
#region 属性
/// <summary>文本</summary>
[Bindable(true)]
[Category(" 专用属性"), DefaultValue(null), Description("文本")]
public String Text
{
get
{
if (BtnControl != null) return BtnControl.Text;
return null;
}
set
{
if (BtnControl != null) BtnControl.Text = value;
if (HiddenControlText != null) HiddenControlText.Value = value;
}
}
/// <summary>值</summary>
[Bindable(true)]
[Category(" 专用属性"), DefaultValue(null), Description("值")]
public String Value
{
get
{
//return (String)ViewState["Value"];
if (HiddenControl != null) return HiddenControl.Value;
return null;
}
set
{
//ViewState["Value"] = value;
if (HiddenControl != null) HiddenControl.Value = value;
}
}
/// <summary>选择页地址</summary>
[Bindable(false)]
[Category(" 专用属性"), DefaultValue(null), Description("选择页地址")]
public String Url
{
get
{
return (String)ViewState["Url"];
}
set
{
_ProcessedUrl = null;
ViewState["Url"] = value;
}
}
private string _ProcessedUrl;
/// <summary>返回处理过~/的url地址</summary>
internal string ProcessedUrl
{
get
{
if (_ProcessedUrl == null)
{
string url = Url;
if (url[0] == '~' && url[1] == '/')
{
_ProcessedUrl = Page.ResolveUrl(url);
}
else
{
_ProcessedUrl = url;
}
}
return _ProcessedUrl;
}
}
/// <summary>控件ID</summary>
[Bindable(false)]
[IDReferenceProperty(typeof(Control))]
[Category(" 专用属性"), DefaultValue(null), Description("控件ID")]
public String ControlID
{
get
{
return (String)ViewState["ControlID"];
}
set
{
ViewState["ControlID"] = value;
}
}
/// <summary>自动回发</summary>
[Themeable(false), WebCategory("Behavior"), WebSysDescription("TextBox_AutoPostBack"), DefaultValue(false)]
public virtual bool AutoPostBack
{
get
{
object obj2 = this.ViewState["AutoPostBack"];
return ((obj2 != null) && ((bool)obj2));
}
set
{
this.ViewState["AutoPostBack"] = value;
}
}
/// <summary>弹出的模式窗口选项</summary>
[Category(" 专用属性"), DefaultValue(""), Description("弹出的模式窗口选项")]
public string ModalDialogOptions
{
get
{
return (string)ViewState["ModelDialogOptions"];
}
set
{
ViewState["ModelDialogOptions"] = value;
}
}
/// <summary>扩展的客户端选项</summary>
[Category(" 专用属性"), DefaultValue(""), Description("扩展的客户端选项")]
public string ExtraClientOptions
{
get
{
return (string)ViewState["ExtraClientOptions"];
}
set
{
ViewState["ExtraClientOptions"] = value;
}
}
/// <summary><see cref="System.Web.UI.Control.ClientID"/></summary>
public override string ClientID
{
get
{
return BtnControl.ClientID;
}
}
#endregion
#region 初始化
///// <summary>
/////
///// </summary>
///// <param name="e"></param>
//protected override void OnInit(EventArgs e)
//{
// base.OnInit(e);
// //BackColor = Color.FromArgb(0xE7, 0xE7, 0xE7);
// Style.Add(HtmlTextWriterStyle.BackgroundColor, "0xE7E7E7");
// Style.Add(HtmlTextWriterStyle.BackgroundImage, Page.ClientScript.GetWebResourceUrl(this.GetType(), "XControl.Button.choose.gif"));
// BorderWidth = Unit.Pixel(0);
// BorderStyle = BorderStyle.Solid;
// //BorderColor = Color.FromArgb(0xFF, 0xFF, 0xFF);
// Style.Add(HtmlTextWriterStyle.BorderColor, "0xFFFFFF");
// //ForeColor = Color.FromArgb(0x33, 0x33, 0x33);
// Style.Add(HtmlTextWriterStyle.Color, "0x333333");
// this.Font.Size = FontUnit.Point(12);
// Style.Add(HtmlTextWriterStyle.Cursor, "pointer");
// Height = Unit.Pixel(25);
// Width = Unit.Pixel(128);
// Style.Add(HtmlTextWriterStyle.MarginTop, "5px");
//}
#endregion
#region 子控件
//private Button btnControl;
//private HiddenField hiddenControl;
private Button _BtnControl;
/// <summary>按钮</summary>
public Button BtnControl
{
get
{
if (_BtnControl == null) EnsureChildControls();
return _BtnControl;
}
}
private HiddenField _HiddenControl;
/// <summary>隐藏域</summary>
public HiddenField HiddenControl
{
get
{
if (_HiddenControl == null) EnsureChildControls();
return _HiddenControl;
}
}
private HiddenField _HiddenControlText;
/// <summary>隐藏域</summary>
public HiddenField HiddenControlText
{
get
{
if (_HiddenControlText == null) EnsureChildControls();
return _HiddenControlText;
}
}
/// <summary>创建一个隐藏子控件</summary>
protected override void CreateChildControls()
{
base.CreateChildControls();
if (_BtnControl == null)
{
_BtnControl = new Button();
////BackColor = Color.FromArgb(0xE7, 0xE7, 0xE7);
//_BtnControl.Style.Add(HtmlTextWriterStyle.BackgroundColor, "0xE7E7E7");
////_BtnControl.Style.Add(HtmlTextWriterStyle.BackgroundImage, Page.ClientScript.GetWebResourceUrl(this.GetType(), "XControl.Button.choose.gif"));
//_BtnControl.BorderWidth = Unit.Pixel(0);
//_BtnControl.BorderStyle = BorderStyle.Solid;
////BorderColor = Color.FromArgb(0xFF, 0xFF, 0xFF);
//_BtnControl.Style.Add(HtmlTextWriterStyle.BorderColor, "0xFFFFFF");
////ForeColor = Color.FromArgb(0x33, 0x33, 0x33);
//_BtnControl.Style.Add(HtmlTextWriterStyle.Color, "0x333333");
//_BtnControl.Font.Size = FontUnit.Point(12);
//_BtnControl.Style.Add(HtmlTextWriterStyle.Cursor, "pointer");
//_BtnControl.Height = Unit.Pixel(25);
//_BtnControl.Width = Unit.Pixel(128);
//_BtnControl.Style.Add(HtmlTextWriterStyle.MarginTop, "5px");
_BtnControl.ID = "ChooseTextShow";
_BtnControl.ToolTip = ToolTip;
_BtnControl.Text = Text;
Controls.Add(_BtnControl);
}
if (_HiddenControl == null)
{
_HiddenControl = new HiddenField();
_HiddenControl.ID = "ChooseValue";
_HiddenControl.Value = Value;
_HiddenControl.ValueChanged += new EventHandler(OnValueChanged);
Controls.Add(_HiddenControl);
}
if (_HiddenControlText == null)
{
_HiddenControlText = new HiddenField();
_HiddenControlText.ID = "ChooseText";
_HiddenControlText.Value = Text;
_HiddenControlText.ValueChanged += delegate(Object sender, EventArgs e)
{
_BtnControl.Text = _HiddenControlText.Value;
};
Controls.Add(_HiddenControlText);
}
}
#endregion
#region 呈现
/// <summary>预呈现。输出脚本</summary>
/// <param name="e"></param>
protected override void OnPreRender(EventArgs e)
{
//EnsureChildControls();
base.OnPreRender(e);
// 输出控制脚本
Page.ClientScript.RegisterClientScriptResource(this.GetType(), "XControl.Button.choose.js");
// 输出默认样式
if (String.IsNullOrEmpty(BtnControl.CssClass) || BtnControl.CssClass == "choose")
{
try
{
//Page.ClientScript.RegisterClientScriptResource(this.GetType(), "XControl.Button.choose.css");
HtmlLink link = new HtmlLink();
link.Href = Page.ClientScript.GetWebResourceUrl(this.GetType(), "XControl.Button.choose.css");
link.Attributes["rel"] = "stylesheet";
link.Attributes["type"] = "text/css";
Page.Header.Controls.Add(link);
BtnControl.CssClass = "choose";
}
catch { }
}
BtnControl.Attributes.Add("val", HiddenControl.ClientID + "," + HiddenControlText.ClientID);
String postbackJs = Page.ClientScript.GetPostBackEventReference(this, "");
postbackJs = postbackJs.Replace("'", @"\'");
string modalDialogOpts = !string.IsNullOrEmpty(ModalDialogOptions) ? "{" + ModalDialogOptions + "}" : "null";
string extraClientOpts = !string.IsNullOrEmpty(ExtraClientOptions) ? "{" + ExtraClientOptions + "}" : (AutoPostBack ? "{after:'" + postbackJs + "'}" : "null");
string otherClientClick = "return false;";
//if (!String.IsNullOrEmpty(BtnControl.OnClientClick))
//{
// otherClientClick = BtnControl.OnClientClick;
//}
// 由于Button控件将OnClientClick值保存到ViewState,所以在post之后,OnClientClick属性值会恢复
// 所以这里不需要考虑保留旧值,并且ChooseButton控件没提供OnClientClick属性,外部也无法访问到Button控件的OnClientClick
// 原有代码会在post一次之后反复叠加Choose()的js调用
BtnControl.OnClientClick = string.Format("Choose(this,'{0}',{1},{2});{3}", ProcessedUrl, modalDialogOpts, extraClientOpts, otherClientClick);
//if (String.IsNullOrEmpty(BtnControl.OnClientClick))
// BtnControl.OnClientClick = "Choose(this,'" + Url + "');return false;";
//else
// BtnControl.OnClientClick = "Choose(this,'" + Url + "');" + BtnControl.OnClientClick;
}
/// <summary>已重写。忽略外部标签</summary>
/// <param name="writer"></param>
public override void RenderBeginTag(HtmlTextWriter writer)
{
//base.RenderBeginTag(writer);
}
/// <summary>已重写。忽略外部标签</summary>
/// <param name="writer"></param>
public override void RenderEndTag(HtmlTextWriter writer)
{
//base.RenderEndTag(writer);
}
#endregion
#region 回发事件处理
private static readonly object EventValueChanged = new object();
/// <summary>值改变时触发</summary>
[WebSysDescription("HiddenField_OnValueChanged"), WebCategory("Action")]
public event EventHandler ValueChanged
{
add
{
base.Events.AddHandler(EventValueChanged, value);
}
remove
{
base.Events.RemoveHandler(EventValueChanged, value);
}
}
void OnValueChanged(Object sender, EventArgs e)
{
EventHandler handler = (EventHandler)base.Events[EventValueChanged];
if (handler != null) handler(this, e);
}
#endregion
}
}
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