asp.net Flash 控件

使用了 SWFObject.js http://blog.deconcept.com/swfobject/

SWFObject.js 的功能很丰富，改写为控件可以更方便的调用。

样例下载

using  System;
using  System.Collections.Generic;
using  System.ComponentModel;
using  System.Text;
using  System.Web;
using  System.Web.UI;
using  System.Web.UI.WebControls;
using  System.Drawing;
using  System.Drawing.Design;
using  System.Web.UI.Design;
using  System.IO;
using  System.Collections;
using  System.ComponentModel.Design;

[assembly: TagPrefix( " Flash " ,  " Flash " )]

[assembly: WebResource( " Flash.Flash.js " ,  " application/x-javascript " )]

namespace  Flash
{
     #region  参数项
     ///   <summary>
     ///  参数项。
     ///   </summary>
    [DefaultProperty( " Name " )]
    [ToolboxData( " <{0}:FlashItem /> " )]
     public   class  FlashItem : IStateManager
    {
         public  FlashItem()
            :  this ( "" ,  "" )
        {

        }
         ///   <summary>
         ///  构造函数。
         ///   </summary>
         ///   <param name="name"> 名称 </param>
         ///   <param name="value"> 值 </param>
         public  FlashItem( string  name,  string  value)
        {
             this .Name  =  name;
             this .Value  =  value;
        }

         ///   <summary>
         ///  名称。
         ///   </summary>
        [DefaultValue( "" )]
        [Description( " 名称 " )]
         public   string  Name
        {
             get  {  return  ViewState[ " Name " ]  is   string   ?  ( string )ViewState[ " Name " ] :  string .Empty; }
             set  { ViewState[ " Name " ]  =  value; }
        }

         ///   <summary>
         ///  值。
         ///   </summary>
        [DefaultValue( "" )]
        [Description( " 值 " )]
         public   string  Value
        {
             get  {  return  ViewState[ " Value " ]  is   string   ?  ( string )ViewState[ " Value " ] :  string .Empty; }
             set  { ViewState[ " Value " ]  =  value; }
        }

         public   override   string  ToString()
        {
             return   string .IsNullOrEmpty(Name)  ?   " Item "  : Name;
        }

         #region  视图
         private   bool  marked;
         private  StateBag viewState;
         internal   void  LoadViewState( object  state)
        {
             if  (state  !=   null )
                ((IStateManager) this .ViewState).LoadViewState(state);
        }

         internal   object  SaveViewState()
        {
             if  ( this .viewState  ==   null )
                 return   null ;
             else
                 return  ((IStateManager) this .viewState).SaveViewState();
        }

         internal   void  TrackViewState()
        {
             this .marked  =   true ;
             if  ( this .viewState  !=   null )
                ((IStateManager) this .viewState).TrackViewState();
        }

         internal  StateBag ViewState
        {
             get
            {
                 if  ( this .viewState  ==   null )
                {
                     this .viewState  =   new  StateBag();
                     if  (((IStateManager) this ).IsTrackingViewState)
                        ((IStateManager) this .viewState).TrackViewState();
                }
                 return   this .viewState;
            }
        }

         internal   bool  IsTrackingViewState
        {
             get  {  return   this .marked; }
        }

         internal   void  SetDirty()
        {
             this .ViewState.SetDirty( true );
        }

         void  IStateManager.LoadViewState( object  savedState)
        {
             this .LoadViewState(savedState);
        }

         object  IStateManager.SaveViewState()
        {
             return   this .SaveViewState();
        }

         void  IStateManager.TrackViewState()
        {
             this .TrackViewState();
        }

         bool  IStateManager.IsTrackingViewState
        {
             get  {  return   this .IsTrackingViewState; }
        }

         #endregion
    }
     #endregion

    [DefaultProperty( " Src " )]
    [Designer( typeof (Flash.Designer))]
    [ToolboxData( " <{0}:Flash runat=\ " server\ "  Width=\ " 125px\ "  Height=\ " 50px\ " ></{0}:Flash> " )]
    [ParseChildren( true )]
     public   class  Flash : WebControl
    {
         #region  参数集合
         ///   <summary>
         ///  参数集合。
         ///   </summary>
         public   class  FlashItemCollection : StateManagedCollection
        {
             public  FlashItem  this [ int  index]
            {
                 get  {  return  ( this [index]  as  FlashItem); }
                 set  {  this [index]  =  value; }
            }

             public   int  Add(FlashItem value)
            {
                 return  ((IList) this ).Add(value);
            }

             public   bool  Contains(FlashItem value)
            {
                 return  ((IList) this ).Contains(value);
            }

             public   void  CopyTo(FlashItem[] array,  int  index)
            {
                 base .CopyTo(array, index);
            }

             public   int  IndexOf(FlashItem value)
            {
                 return  ((IList) this ).IndexOf(value);
            }

             public   void  Remove(FlashItem value)
            {
                ((IList) this ).Remove(value);
            }

             public   void  RemoveAt( int  index)
            {
                ((IList) this ).RemoveAt(index);
            }

             protected   override   void  SetDirtyObject( object  o)
            {
                (o  as  FlashItem).SetDirty();
            }
        }
         #endregion

         #region  视图刷新
         protected   override   void  LoadViewState( object  savedState)
        {
             if  (savedState  !=   null )
            {
                 object [] objArray  =  ( object [])savedState;
                 base .LoadViewState(objArray[ 0 ]);
                ((IStateManager) this .Variables).LoadViewState(objArray[ 1 ]);
                ((IStateManager) this .Params).LoadViewState(objArray[ 2 ]);
            }
        }

         protected   override   object  SaveViewState()
        {
             return   new   object [] {  base .SaveViewState(), ((IStateManager) this .Variables).SaveViewState(), ((IStateManager) this .Params).SaveViewState() };
        }

         protected   override   void  TrackViewState()
        {
             base .TrackViewState();
            ((IStateManager) this .Variables).TrackViewState();
            ((IStateManager) this .Params).TrackViewState();
        }

         #endregion

         public  Flash()
            :  base (HtmlTextWriterTag.Div)
        {
        }

         public   class  Designer : ControlDesigner
        {
             public   override   string  GetDesignTimeHtml()
            {
                Flash component  =  (Flash) base .Component;
                 if  (component.Width  ==  Unit.Empty)
                    component.Style.Add(HtmlTextWriterStyle.Width,  " 100% " );
                 else
                    component.Style.Remove(HtmlTextWriterStyle.Width);
                HtmlTextWriter writer  =   new  HtmlTextWriter( new  StringWriter());
                component.RenderControl(writer);
                 return  writer.InnerWriter.ToString();
            }
        }

         ///   <summary>
         ///  窗口模式。
         ///   </summary>
         public   enum  WmodeType
        {
             ///   <summary>
             ///  窗口
             ///   </summary>
            Window,
             ///   <summary>
             ///  透明
             ///   </summary>
            Transparent
        }

         ///   <summary>
         ///  品质。
         ///   </summary>
         public   enum  QualityType
        {
             ///   <summary>
             ///  低
             ///   </summary>
            Low,
             ///   <summary>
             ///  自动低
             ///   </summary>
            Autolow,
             ///   <summary>
             ///  自动高
             ///   </summary>
            Autohigh,
             ///   <summary>
             ///  高
             ///   </summary>
            High
        }

         private  FlashItemCollection variables  =   null ;
         ///   <summary>
         ///  传递参数。
         ///   </summary>
        [Description( " 传递参数。 " )]
        [PersistenceMode(PersistenceMode.InnerProperty)]
        [MergableProperty( false )]
        [Editor( typeof (CollectionEditor),  typeof (UITypeEditor))]
        [DefaultValue(( string ) null )]
         public  FlashItemCollection Variables
        {
             get
            {
                 if  (variables  ==   null )
                {
                    variables  =   new  FlashItemCollection();
                     if  ( base .IsTrackingViewState)
                        ((IStateManager)(variables)).TrackViewState();
                }
                 return  variables;
            }
        }

         private  FlashItemCollection _params  =   null ;
         ///   <summary>
         ///  属性参数。
         ///   </summary>
        [Description( " 属性参数。 " )]
        [PersistenceMode(PersistenceMode.InnerProperty)]
        [MergableProperty( false )]
        [Editor( typeof (CollectionEditor),  typeof (UITypeEditor))]
        [DefaultValue(( string ) null )]
         public  FlashItemCollection Params
        {
             get
            {
                 if  (_params  ==   null )
                {
                    _params  =   new  FlashItemCollection();
                     if  ( base .IsTrackingViewState)
                        ((IStateManager)(_params)).TrackViewState();
                }
                 return  _params;
            }
        }

         ///   <summary>
         ///  Flash 文件地址。
         ///   </summary>
        [DefaultValue( "" )]
        [Category( " Flash " )]
        [Description( " Flash 文件地址。 " )]
        [Editor( " System.Web.UI.Design.UrlEditor, System.Design " ,  typeof (UITypeEditor))]
        [UrlProperty]
         public   string  Src
        {
             get  {  return  ViewState[ " Src " ]  is   string   ?  ( string )ViewState[ " Src " ] :  string .Empty; }
             set  { ViewState[ " Src " ]  =  value; }
        }

         ///   <summary>
         ///  Flash 版本号。
         ///   </summary>
        [DefaultValue( 8 )]
        [Category( " Flash " )]
        [Description( " Flash 版本号。 " )]
         public   int  Version
        {
             get  {  return  ViewState[ " Version " ]  is   int   ?  ( int )ViewState[ " Version " ] :  8 ; }
             set  { ViewState[ " Version " ]  =  value; }
        }

         ///   <summary>
         ///  显示菜单。
         ///   </summary>
        [DefaultValue( true )]
        [Category( " Flash " )]
        [Description( " 显示菜单。 " )]
         public   bool  Menu
        {
             get  {  return  ViewState[ " Menu " ]  is   bool   ?  ( bool )ViewState[ " Menu " ] :  true ; }
             set  { ViewState[ " Menu " ]  =  value; }
        }

         ///   <summary>
         ///  窗口模式。
         ///   </summary>
        [DefaultValue(WmodeType.Window)]
        [Category( " Flash " )]
        [Description( " 窗口模式。 " )]
         public  WmodeType Wmode
        {
             get  {  return  ViewState[ " Wmode " ]  is  WmodeType  ?  (WmodeType)ViewState[ " Wmode " ] : WmodeType.Window; }
             set  { ViewState[ " Wmode " ]  =  value; }
        }

         ///   <summary>
         ///  品质。
         ///   </summary>
        [DefaultValue(QualityType.High)]
        [Category( " Flash " )]
        [Description( " 品质。 " )]
         public  QualityType Quality
        {
             get  {  return  ViewState[ " Quality " ]  is  QualityType  ?  (QualityType)ViewState[ " Quality " ] : QualityType.High; }
             set  { ViewState[ " Quality " ]  =  value; }
        }

         protected   override   void  OnPreRender(EventArgs e)
        {
             base .OnPreRender(e);

            Page.ClientScript.RegisterClientScriptResource( typeof (Flash),  " Flash.Flash.js " );
        }

         ///   <summary>
         ///  Script 字符编码。
         ///   </summary>
         ///   <param name="s"> 要编码的字符 </param>
         ///   <returns> 返回已编码的字符。 </returns>
         private   string  ScriptEncode( string  s)
        {
             if  ( string .IsNullOrEmpty(s))
                 return  s;
             else
                 return  s.Replace( " \\ " ,  " \\\\ " ).Replace( " \r " ,  " \\r " ).Replace( " \n " ,  " \\n " ).Replace( " \b " ,  " \\b " ).Replace( " \f " ,  " \\f " ).Replace( " \t " ,  " \\t " ).Replace( " / " ,  " \\/ " ).Replace( " ' " ,  " \\' " ).Replace( " \ "" ,  " \\\ "" );
        }

         public   override   void  RenderEndTag(HtmlTextWriter writer)
        {
             base .RenderEndTag(writer);

            writer.AddAttribute(HtmlTextWriterAttribute.Type,  " text/javascript " );
            writer.RenderBeginTag(HtmlTextWriterTag.Script);
            writer.Write( " var {0}_SWFObject = new SWFObject('{1}', '{0}_SWF', '{2}', '{3}', '{4}', '{5}');\n " , ClientID, ScriptEncode(Page.ResolveUrl(Src)), Width, Height, Version, ColorTranslator.ToHtml(BackColor));
            writer.Write( " {0}_SWFObject.addParam('wmode', '{1}');\n " , ClientID, Wmode);
            writer.Write( " {0}_SWFObject.addParam('menu', '{1}');\n " , ClientID, Menu);
            writer.Write( " {0}_SWFObject.addParam('quality', '{1}');\n " , ClientID, Quality);
             // 遍历属性参数
             foreach  (FlashItem i  in  Params)
            {
                writer.Write( " {0}_SWFObject.addParam('{1}', '{2}');\n " , ClientID, ScriptEncode(i.Name), ScriptEncode(i.Value));
            }
             // 遍历传递参数
             foreach  (FlashItem i  in  Variables)
            {
                writer.Write( " {0}_SWFObject.addVariable('{1}', '{2}');\n " , ClientID, ScriptEncode(i.Name), ScriptEncode(i.Value));
            }
            writer.Write( " {0}_SWFObject.write('{0}'); " , ClientID);
            writer.RenderEndTag();
        }
    }
}