可以申縮的自定義Panel收藏
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Security.Policy;
using System.IO;
using System.Text;
namespace Asm.STJ.MIS.WebControls
{
/// <summary>
/// CollapablePanel 的摘要描述。
/// </summary>
[DefaultProperty("Item"),ParseChildren(true,"Items"),
ToolboxData("<{0}:CollapablePanel runat=server></{0}:CollapablePanel>")]
public class CollapablePanel : System.Web.UI.WebControls.WebControl,IPostBackEventHandler,INamingContainer
{
#region Event definition
public event ItemClickEventHandler ItemClick;
#endregion
#region private variable definition.
private string _titleText;
private string _titleHeadImg;
private string _titleEndImgOpen;
private string _titleEndImgClose;
private Unit _titleHeight;
private string _titleBackImg;
private Unit _width;
private Unit _prefix;
private string _itemBackImg;
private Unit _itemHeight;
private PanelItems _items;
private bool _opened;
private Style _titleStyle;
private Style _itemStyle;
#endregion
#region attribute definition.
[
Bindable(true),
Category("Title"),
DefaultValue("Title Text"),
Description("Set or get the text of title.")
]
public string TitleText
{
get
{
return (this._titleText == null)? "Title Text" : this._titleText;
}
set
{
this._titleText = value;
}
}
[
Bindable(true),
Category("Title"),
Description("Set or get the head image of title.")
]
public string TitleHeadImage
{
get
{
if ( this._titleHeadImg == null )
{
this._titleHeadImg = String.Empty;
}
return this._titleHeadImg;
}
set
{
this._titleHeadImg = value;
}
}
[
Bindable(true),
Category("Title"),
Description("Set or get the end image of title.")
]
public string EndImageOpen
{
get
{
if ( this._titleEndImgOpen == null )
{
this._titleEndImgOpen = String.Empty;
}
return this._titleEndImgOpen;
}
set
{
this._titleEndImgOpen = value;
}
}
[
Bindable(true),
Category("Title"),
Description("Set or get the end image of title.")
]
public string EndImageClose
{
get
{
if ( this._titleEndImgClose == null )
{
this._titleEndImgClose = String.Empty;
}
return this._titleEndImgClose;
}
set
{
this._titleEndImgClose = value;
}
}
[
Bindable(true),
Category("Title"),
Description("Set or get the end image of title.")
]
public string TitleBackImage
{
get
{
if ( this._titleBackImg == null )
{
this._titleBackImg = String.Empty;
}
return this._titleBackImg;
}
set
{
this._titleBackImg = value;
}
}
[
Bindable(true),
Category("Item"),
Description("Set or get the end background image of title.")
]
public string ItemBackImage
{
get
{
if ( this._itemBackImg == null )
{
this._itemBackImg = String.Empty;
}
return this._itemBackImg;
}
set
{
this._itemBackImg = value;
}
}
[
Bindable(true),
Category("Item"),
Description("Set or get the end image of title.")
]
public Unit PrefixWidth
{
get
{
return (this._prefix == Unit.Empty)? Unit.Pixel(25) : this._prefix;
}
set
{
this._prefix = value;
}
}
[
Bindable(true),
Category("Title"),
Description("Set or get the height of title.")
]
public Unit TitleHeight
{
get
{
return this._titleHeight;
}
set
{
this._titleHeight = value;
}
}
[
Bindable(true),
Category("Item"),
Description("Set or get the height of Items.")
]
public Unit ItemHeight
{
get
{
return this._itemHeight;
}
set
{
this._itemHeight = value;
}
}
[
Bindable(true),
Category("Appearance")
]
public bool Opened
{
get
{
return this._opened;
}
set
{
this._opened = value;
}
}
[
Bindable(true),
Category("Layout")
]
public override Unit Width
{
get
{
return this._width;
}
set
{
this._width = value;
}
}
[
Bindable(true),
Category("Layout")
]
public override Unit Height
{
get
{
return base.Height;
}
}
[
Category("Item"),
Description("Item List"),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true),
PersistenceMode(PersistenceMode.InnerDefaultProperty)
]
public PanelItems Items
{
get
{
if ( this._items == null )
{
this._items = new PanelItems();
}
return this._items;
}
}
[
Category("Title"),
Description("Title Style"),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true)
]
public virtual Style TitleStyle
{
get
{
if ( this._titleStyle == null )
{
this._titleStyle = new Style();
if ( this.IsTrackingViewState )
{
((IStateManager)this._titleStyle).TrackViewState();
}
}
return this._titleStyle;
}
}
[
Category("Item"),
Description("Items Style"),
DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
NotifyParentProperty(true)
]
public virtual Style ItemStyle
{
get
{
if ( this._itemStyle == null )
{
this._itemStyle = new Style();
if ( this.IsTrackingViewState )
{
((IStateManager)this._itemStyle).TrackViewState();
}
}
return this._itemStyle;
}
}
#endregion
#region render filed
protected override void AddAttributesToRender(HtmlTextWriter writer)
{
writer.AddAttribute(HtmlTextWriterAttribute.Cellpadding,"0");
writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing,"0");
writer.AddAttribute(HtmlTextWriterAttribute.Border,"0");
writer.AddAttribute(HtmlTextWriterAttribute.Width,this._width.Value.ToString());
base.AddAttributesToRender (writer);
}
protected override void RenderContents(HtmlTextWriter writer)
{
writer.RenderBeginTag(HtmlTextWriterTag.Table);
if ( this.Page.IsPostBack == true )
{
if ( this.Page.Request.Form[this.ClientID+"Opened"] == "True" )
{
this.Opened = true;
}
else
{
this.Opened = false;
}
}
this.RenderTitle(writer);
this.RenderItems(writer);
writer.RenderEndTag();
this.Page.RegisterHiddenField(this.ClientID+"Opened",this.Opened.ToString());
}
private void RenderItems( HtmlTextWriter writer )
{
writer.AddAttribute(HtmlTextWriterAttribute.Cellpadding,"0");
writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing,"0");
writer.AddAttribute(HtmlTextWriterAttribute.Border,"0");
writer.AddAttribute(HtmlTextWriterAttribute.Width,this._width.ToString());
writer.AddAttribute(HtmlTextWriterAttribute.Id,this.ClientID+"child");
if ( this.Opened == false )
{
writer.AddStyleAttribute("display","none");
}
writer.RenderBeginTag(HtmlTextWriterTag.Table);
//write Items.
foreach ( PanelItem itm in this.Items )
{
this.ItemStyle.AddAttributesToRender(writer);
writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundImage,"url("+this.ItemBackImage+")");
if ( this.Enabled )
{
writer.AddAttribute("onclick","javascript:{"+this.Page.GetPostBackEventReference(this,itm.Text)+";}");
}
writer.AddStyleAttribute("cursor","hand");
writer.RenderBeginTag(HtmlTextWriterTag.Tr);
//Item Prefix.
writer.AddAttribute(HtmlTextWriterAttribute.Height,this.ItemHeight.ToString());
writer.AddAttribute(HtmlTextWriterAttribute.Width,this._prefix.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.RenderEndTag();
//Item Image.
if ( itm.ImageUrl != String.Empty )
{
writer.AddAttribute(HtmlTextWriterAttribute.Width,"1");
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.AddAttribute(HtmlTextWriterAttribute.Src,itm.ImageUrl);
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.RenderEndTag();
}
else
{
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.RenderEndTag();
}
//Item Text.
writer.AddAttribute(HtmlTextWriterAttribute.Align,"left");
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.Write(itm.Text);
writer.RenderEndTag();
writer.RenderEndTag();
writer.RenderEndTag();
}
writer.RenderEndTag();
}
private void RenderTitle( HtmlTextWriter writer )
{
//write title.
writer.AddAttribute(HtmlTextWriterAttribute.Cellpadding,"0");
writer.AddAttribute(HtmlTextWriterAttribute.Cellspacing,"0");
writer.AddAttribute(HtmlTextWriterAttribute.Border,"0");
writer.AddAttribute(HtmlTextWriterAttribute.Width,this._width.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.Table);
StringBuilder js = new StringBuilder();
js.Append("javascript:{");
js.Append("var child = document.getElementById('"+this.ClientID+"child');");
js.Append(" if (child.style.display == 'none' ) ");
js.Append("{ child.style.display = 'block';");
js.Append(" document.getElementById('"+this.ClientID+"Opened').value = 'True';");
if ( this.EndImageOpen != String.Empty )
{
js.Append("var endImg = document.getElementById('"+this.ClientID+"titleEnd');");
js.Append("if ( endImg != null ) endImg.src = '"+this.EndImageOpen + "';");
}
js.Append("}");
js.Append(" else { child.style.display = 'none';");
js.Append(" document.getElementById('"+this.ClientID+"Opened').value = 'False';");
if ( this.EndImageClose != String.Empty )
{
js.Append("var endImg = document.getElementById('"+this.ClientID+"titleEnd');");
js.Append("if ( endImg != null ) endImg.src = '"+this.EndImageClose + "';");
}
js.Append("}");
js.Append("}");
writer.AddAttribute(HtmlTextWriterAttribute.Onclick,js.ToString());
this.TitleStyle.AddAttributesToRender(writer);
writer.AddStyleAttribute("cursor","hand");
writer.AddAttribute(HtmlTextWriterAttribute.Height,this.TitleHeight.ToString());
writer.AddStyleAttribute(HtmlTextWriterStyle.BackgroundImage,"url('"+this.TitleBackImage+"')");
writer.RenderBeginTag(HtmlTextWriterTag.Tr);
if ( this.TitleHeadImage != String.Empty )
{
writer.AddAttribute(HtmlTextWriterAttribute.Width,"20");
writer.AddAttribute(HtmlTextWriterAttribute.Align,"right");
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.AddAttribute(HtmlTextWriterAttribute.Src,this.TitleHeadImage.ToString());
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.RenderEndTag();
}
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.RenderBeginTag(HtmlTextWriterTag.A);
writer.Write(this.TitleText);
writer.RenderEndTag();
writer.RenderEndTag();
if ( this.Opened )
{
if ( this.EndImageOpen != String.Empty )
{
writer.AddAttribute(HtmlTextWriterAttribute.Width,"1");
writer.AddAttribute(HtmlTextWriterAttribute.Align,"left");
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.AddAttribute(HtmlTextWriterAttribute.Src,this.EndImageOpen.ToString());
writer.AddAttribute(HtmlTextWriterAttribute.Id,this.ClientID+"titleEnd");
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.RenderEndTag();
writer.AddAttribute(HtmlTextWriterAttribute.Width,"15");
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.RenderEndTag();
}
}
else
{
if ( this.EndImageClose != String.Empty )
{
writer.AddAttribute(HtmlTextWriterAttribute.Width,"1");
writer.AddAttribute(HtmlTextWriterAttribute.Align,"left");
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.AddAttribute(HtmlTextWriterAttribute.Src,this.EndImageClose.ToString());
writer.AddAttribute(HtmlTextWriterAttribute.Id,this.ClientID+"titleEnd");
writer.RenderBeginTag(HtmlTextWriterTag.Img);
writer.RenderEndTag();
writer.RenderEndTag();
writer.AddAttribute(HtmlTextWriterAttribute.Width,"15");
writer.RenderBeginTag(HtmlTextWriterTag.Td);
writer.RenderEndTag();
}
}
writer.RenderEndTag();
writer.RenderEndTag();
}
#endregion
#region IPostBackEventHandler 成員
public void RaisePostBackEvent(string eventArgument)
{
ItemClickEventArgs e = new ItemClickEventArgs(eventArgument);
this.OnItemClick(this,e);
}
#endregion
#region Event Field
private void OnItemClick(object sender,ItemClickEventArgs e )
{
if ( this.ItemClick != null )
{
this.ItemClick(sender,e);
}
}
#endregion
}
#region Event Args
public delegate void ItemClickEventHandler(Object sender, ItemClickEventArgs e);
public class ItemClickEventArgs : EventArgs
{
private string _itemText;
public string ItemText
{
get
{
return this._itemText;
}
}
public ItemClickEventArgs(string text)
{
this._itemText = text;
}
}
#endregion
}
using System;
namespace Asm.STJ.MIS.WebControls
{
/// <summary>
///
/// </summary>
public class ItemConverter : System.ComponentModel.ExpandableObjectConverter
{
public ItemConverter()
{
//
// TODO: 在此加入建構函式的程式碼
//
}
public override bool CanConvertFrom(System.ComponentModel.ITypeDescriptorContext context, Type sourceType)
{
if ( sourceType == typeof(string ) )
{
return true;
}
return base.CanConvertFrom (context, sourceType);
}
public override object ConvertFrom(System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
if ( value is string )
{
PanelItem it = new PanelItem();
it.Text = value.ToString();
// it.ImageUrl = "String.Empty";
return it;
}
return base.ConvertFrom (context, culture, value);
}
public override object ConvertTo(System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if ( destinationType == typeof (string ) )
{
return ((PanelItem)value).Text;
}
return base.ConvertTo (context, culture, value, destinationType);
}
}
}
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Collections;
using System.Security.Policy;
namespace Asm.STJ.MIS.WebControls
{
[TypeConverter(typeof(ItemConverter))]
public class PanelItem
{
private string _text;
private string _imgUrl;
[
Bindable(true),
Description("Item Text"),
NotifyParentProperty(true)
]
public string Text
{
get
{
return this._text == null? String.Empty:this._text;
}
set
{
this._text = value;
}
}
[
Bindable(true),
Description("Item image Url"),
NotifyParentProperty(true)
]
public string ImageUrl
{
get
{
return this._imgUrl == null? "String.Empty":this._imgUrl;
}
set
{
this._imgUrl = value;
}
}
}
public class PanelItems : System.Collections.CollectionBase
{
private ArrayList _itemArrayList;
public PanelItems()
{
this._itemArrayList = new ArrayList();
}
public int Add( PanelItem _item )
{
return this.List.Add( _item );
}
public void Remove( PanelItem _item )
{
this.List.Remove( _item );
}
public int Cout
{
get
{
return this.List.Count;
}
}
public PanelItem this[int index]
{
get
{
return (PanelItem) this._itemArrayList[index];
}
set
{
this._itemArrayList[index] = value;
}
}
}
}
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