TabControl.cs :  » Persistence-Frameworks » Data-Holder » DBWebControls » WebControls » C# / CSharp Open Source

using System;
using System.ComponentModel;
using System.Collections;
using System.Diagnostics;
using System.ComponentModel.Design;
using System.Drawing.Design;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Text;

namespace DBWebControls.WebControls{
  /// <summary>
  /// Summary description for TabControl.
  /// </summary>
  [Designer(typeof(TabControlDesigner)),
  ToolboxData("<{0}:TabControl runat=\"server\"></{0}:TabControl>"),
  ParseChildren(true, "TabPages"), //needed by the page parser
  PersistChildren(false) // Needed by the designer
  ]
  public class TabControl:Control, INamingContainer
  {
    private TabPageCollection m_TabPages = new TabPageCollection();
    private int l_SelectedPageIndex = -1;
    private string m_BackGroundImageUrl = string.Empty;
    private string m_TabBackSelectedImageUrl=string.Empty;
    private string m_TabBackUnSelectedImageUrl=string.Empty;
    private const string IDPrefix = "TabPage__";
    private const string SelectedIndexViewSateKey = "TabSelectedIndex";
    //private System.ComponentModel.Container components = null;
    public TabControl()
    {
      
      //
      // TODO: Add constructor logic here
      //
    }

    #region Properties
    [Bindable(false),
    Browsable(false)]
    public int SelectedPageIndex
    {
      get      
      {        
        if(l_SelectedPageIndex < 0 || l_SelectedPageIndex >= TabPages.Count)
        {
          object tmp = this.ViewState[SelectedIndexViewSateKey];
          if(tmp != null)
            l_SelectedPageIndex = (int)tmp;
          else
            l_SelectedPageIndex = 0;
        }
        return l_SelectedPageIndex;
      }
    }


    [
    Bindable(true),
    Browsable(true),
    Category("Window"),
    Editor(typeof(TabPageCollectionEditor), typeof(UITypeEditor)),
    DesignerSerializationVisibility(DesignerSerializationVisibility.Content),
    PersistenceMode(PersistenceMode.InnerDefaultProperty),
    Description("Collection of Property(string Key, string Value) objects sent to Modal Window.")
    ]
    public TabPageCollection TabPages
    {
      get{return m_TabPages;}
    }

    [Category("Windows"),
    Description("BackGround image"),
    Bindable(true),
    Browsable(true),
    Localizable(false),
    DefaultValue(""),
    Editor(typeof( System.Web.UI.Design.UrlEditor), typeof(UITypeEditor))]
    public string BackGroundImageUrl
    {
      get{return m_BackGroundImageUrl;}
      set{m_BackGroundImageUrl = value;}
    }

    [Category("Windows"),
    Description("image shown when the tab page is selected"),
    Bindable(true),
    Browsable(true),
    Localizable(false),
    DefaultValue(""),
    Editor(typeof( System.Web.UI.Design.UrlEditor), typeof(UITypeEditor))]
    public string TabBackSelectedImageUrl
    {
      get{return m_TabBackSelectedImageUrl;}
      set{m_TabBackSelectedImageUrl = value;}
    }

    [Category("Windows"),
    Description("image shown when the tab page is not selected"),
    Bindable(true),
    Browsable(true),
    Localizable(false),
    Editor(typeof(System.Web.UI.Design.UrlEditor), typeof(UITypeEditor))]
    public string TabBackUnSelectedImageUrl
    {
      get{return m_TabBackUnSelectedImageUrl;}
      set{m_TabBackUnSelectedImageUrl = value;}
    }
    #endregion

    protected override void OnPreRender(EventArgs e)
    {
      base.OnPreRender (e);
      if(TabPages.Count <= 0)
        return;

      for(int i = 0; i < TabPages.Count; i++)
      {
        Control ctrl = this.Parent.FindControl(TabPages[i].TabPageControlID);
        if(ctrl != null)
          ctrl.Visible = (i == SelectedPageIndex);
      }
      Control tmp = this.FindControl(IDPrefix+TabPages[SelectedPageIndex].TabPageName);
      ((HtmlControl)tmp.Parent).Attributes["class"] = "selected";
      this.ViewState.Add(SelectedIndexViewSateKey, SelectedPageIndex);
    }


    protected override void CreateChildControls()
    {
      base.CreateChildControls ();
      HtmlGenericControl div = new HtmlGenericControl("div");
      div.Attributes["class"] = "shadetabs";
      HtmlGenericControl ul = new HtmlGenericControl("ul");
      ul.EnableViewState = false;
//      HtmlTable htmltable = new HtmlTable();
//      htmltable.EnableViewState = false;
//      if(m_BackGroundImageUrl.Length > 0)
//        htmltable.Attributes["background"] = m_BackGroundImageUrl;
//      htmltable.Rows.Add(new HtmlTableRow());
//      htmltable.Rows[0].EnableViewState = false;
      
      foreach(TabPage tp in m_TabPages)
      {
//        HtmlGenericControl gc = new HtmlGenericControl("div");
//        HtmlTableCell tcell = new HtmlTableCell();

        HtmlGenericControl li = new HtmlGenericControl("li");


        LinkButton lb = new LinkButton();
        //lb.Style["BACKGROUND-IMAGE"] = "url("+m_TabBackSelectedImageUrl+")";
        //lb.Style["BACKGROUND-REPEAT"] = "repeat-x";
        lb.Text = tp.TabPageText;
        lb.ID = IDPrefix+tp.TabPageName;
        lb.Click +=new EventHandler(lb_Click);
        lb.EnableViewState = false;

        li.Controls.Add(lb);
        li.EnableViewState = false;
        
//        tcell.EnableViewState = false;
//        tcell.Controls.Add(lb);
        ul.Controls.Add(li);
      }
      div.Controls.Add(ul);
      this.Controls.Add(div);
    }

    private void lb_Click(object sender, EventArgs e)
    {
      int tmpi = TabPages.GetTabPageIndexByName(((Control)sender).ID.Substring(IDPrefix.Length));
      if(tmpi >= 0)
        l_SelectedPageIndex = tmpi;
    }
  }

  /// <summary>
  /// Class for displaying WebModalAnchor in designer
  /// </summary>
  internal class TabControlDesigner : System.Web.UI.Design.ControlDesigner
  {
    #region Overriden methods

    /// <summary>
    /// Returns HTML code to show in designer
    /// </summary>
    public override string GetDesignTimeHtml()
    {
      StringBuilder sb = new StringBuilder(300);
      sb.Append(@"<div style=""padding:1px; background-color: #333333;color:#FFFFFF;font:12px Verdana  " +
        " border-style:outset; border-width:1px; font: 75% 'Microsoft Sans Serif';\">&nbsp;<span style=\"color:#FAB301\">TABCONTROL</span> "+((Control)Component).ID +
        "&nbsp;<br/>Ver.&nbsp;"+ this.GetType().Assembly.GetName().Version +
        "</div>");
      return sb.ToString();      
    }
    
    #endregion
  }
}