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

using System;
using System.Collections;
using System.Web;
using System.Text;

namespace DBWebControls.WebNavigator{
  /// <summary>
  /// Summary description for PageNavigator.
  /// </summary>
  public class PageNavigator : IDisposable
  {
    private Hashtable Pages = new Hashtable(2);
    private static string l_SessionId = "DBControls.WebNavigator.PageNavigator";

    public static string SessionID
    {
      get{return l_SessionId;}
    }

    public static PageNavigator GetNavigator(System.Web.UI.Page source)
    {
      return (PageNavigator)source.Session[SessionID];
    }

    public void AddPage(Type PageType, NavBasePageState page)
    {
      Pages.Add(PageType, page);
    }

    public void RemovePage(Type PageType)
    {
      Pages.Remove(PageType);
    }

    public void ClearPages()
    {
      Pages.Clear();
    }

    public NavBasePageState this[Type PageType]
    {
      get{return (NavBasePageState)Pages[PageType];}
    }

    public void RedirectToPage(System.Web.UI.Page source, Type PageType)
    {
      NavBasePageState page = this[PageType];
      if(page != null)
      {
        PageNavigator oldnav = (PageNavigator)source.Session[SessionID];
        if(oldnav != null && oldnav != this)
          oldnav.Dispose();
        source.Session[SessionID] = this;
        source.Response.Redirect(source.ResolveUrl(page.PagePath));
      }
      else
        throw new Exception("Page Navigator Exception Requested Page not found ");
    }

    public void RegisterOpenPopup(System.Web.UI.Page source, Type PageType
      , int width, int height, bool toolbar, bool location
      , bool scrollbars, bool resizable)
    {
      StringBuilder js_string = new StringBuilder(200);
      NavBasePageState page = this[PageType];
      int HalfWidth = width/2;
      int halfHeigth = height/2;
      js_string.Append("<script language=\"javascript\">\r\n");
      js_string.Append("var pozx = window.screen.width/2 - " + HalfWidth.ToString() + ";\r\n");
      js_string.Append("var pozy = window.screen.height/2 - " + halfHeigth.ToString() + ";\r\n");
      js_string.Append("window.open('" + source.ResolveUrl(page.PagePath) + "','SelectList' ");
      js_string.Append(",'top='+pozy+',left=' +pozx+',width=" + width.ToString());
      js_string.Append(",height=" + height.ToString());
      js_string.Append(",toolbar=" + (toolbar == true ? "yes": "no"));
      js_string.Append(",location=" + (location == true ? "yes": "no"));
      js_string.Append(",scrollbars=" + (scrollbars == true ? "yes": "no"));
      js_string.Append(",resizable=" + (resizable == true ? "yes": "no"));
      js_string.Append("');\r\n");
      js_string.Append("</script>");
      source.RegisterStartupScript("OpenSelectListWindow", js_string.ToString());
    }


    #region IDisposable Members

    public void Dispose()
    {
      foreach(NavBasePageState page in Pages.Values)
        page.Dispose();
      Pages.Clear();
    }

    #endregion
  }
}