FreeTextBoxAdapter.cs :  » Bloggers » dasBlog » newtelligence » DasBlog » Web » C# / CSharp Open Source

using System;
using System.Collections.Specialized;
using System.Globalization;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
using newtelligence.DasBlog.Web;
using newtelligence.DasBlog.Web.Core;
using FreeTextBoxControls;

namespace newtelligence.DasBlog.Web{
  /// <summary>
  /// Converts the FreeTextBox control to the interface needed by dasBlog
  /// </summary>
  /// <remarks>
  /// Based on v3.0.5 of FreeTextBox http://www.freetextbox.com/
  /// </remarks>
  public class FreeTextBoxAdapter : EditControlAdapter
  {
    FreeTextBox freeTextBox;

    public FreeTextBoxAdapter()
    {
      freeTextBox = new FreeTextBox();
      freeTextBox.ID = "freeTextBox";
      freeTextBox.DesignModeCss = "ftb/designmode.css";
      freeTextBox.SupportFolder = "ftb/";
      freeTextBox.ToolbarLayout = "ParagraphMenu,FontFacesMenu,FontSizesMenu,FontForeColorsMenu|Bold,Italic,Underline,Strikethrough;Superscript,Subscript,RemoveFormat|JustifyLeft,JustifyRight,JustifyCenter,JustifyFull;BulletedList,NumberedList,Indent,Outdent;IeSpellCheck,CreateLink,Unlink,InsertImage,InsertImageFromGallery,InsertRule|Cut,Copy,Paste;Undo,Redo,Print";
      freeTextBox.ImageGalleryUrl = "ftb/ftb.imagegallery.aspx?rif={0}&amp;cif={0}";
      freeTextBox.RemoveServerNameFromUrls = false;
      freeTextBox.TextDirection = FreeTextBoxControls.TextDirection.LeftToRight;
      freeTextBox.ImageGalleryPath = SiteConfig.GetSiteConfig().BinariesDir;
    }

    public override Control Control { get { return freeTextBox; } }

    public override void Initialize()
    {
      base.Initialize ();
      if (this.freeTextBox.Visible && this.freeTextBox.EnableHtmlMode)
      {
        Toolbar myToolbar = new Toolbar();

        ToolbarButton myButton = new ToolbarButton("Insert Code", "insertCode", "csharp");

        string insertCodeCallback = @"<script type=""text/javascript"">
var ftbReference;
function setFtbReference(ftbRef){
  this.ftbReference = ftbRef;
}

function addTextToPost(html){
  ftbReference.InsertHtml(html);
}
</script>";
        this.Control.Page.ClientScript.RegisterClientScriptBlock(this.GetType(),"insertCodeCallback", insertCodeCallback);

        string scriptBlock = "var codescript = '" + this.freeTextBox.SupportFolder + @"ftb.insertcode.aspx';
if (FTB_Browser.isIE){
  code = showModalDialog(codescript,window,'dialogWidth:400px; dialogHeight:500px;help:0;status:0;resizeable:1;');
  if (code != null) {
    this.ftb.InsertHtml(code);
  }
} else {
  setFtbReference(this.ftb);
  window.open(codescript, 'insertcode', 'width=550,height=500,resizable=yes,scrollbars=yes,status=no,modal=yes,dependent=yes,dialog=yes');
}
";
        myButton.ScriptBlock = scriptBlock;
        myToolbar.Items.Add(myButton);
        this.freeTextBox.Toolbars.Add(myToolbar);
      }
    }


    public override string Text
    {
      get  { return freeTextBox.Text; }
      set { freeTextBox.Text = value; }
    }

    public override bool HasText()
    {
      return (freeTextBox.Text.Trim().Length > 0 && freeTextBox.Text.Trim() != "<p>\r\n\t\t</p>");
    }

    public override Unit Width
    {
      get { return freeTextBox.Width; }
      set { freeTextBox.Width = value; }
    }

    public override Unit Height
    {
      get { return freeTextBox.Height; }
      set { freeTextBox.Height = value; }
    }


    public override void SetLanguage(string language)
    {
      freeTextBox.Language = ConvertToSupportedLanguage(language);
    }

    public override void SetTextDirection(SharedBasePage.TextDirection textDirection)
    {
      if (textDirection == SharedBasePage.TextDirection.RightToLeft) 
      {
        freeTextBox.TextDirection = FreeTextBoxControls.TextDirection.RightToLeft;
      }
      else // default to LTR
      {
        freeTextBox.TextDirection = FreeTextBoxControls.TextDirection.LeftToRight;
      }
    }


    // could be a performance issue, but the editor is only used during editing 
    // so we should be ok, in the 90% case.
    // If it becomes an issue we should cache the supported cultures.
    private static string ConvertToSupportedLanguage(string language ){

      if( language == null ){
        return "en-US";
      }

      FreeTextBoxControls.Support.ResourceManager rm = new FreeTextBoxControls.Support.ResourceManager();
      NameValueCollection coll = rm.GetSupportedLanguages();

      string[]  cultures = new string[coll.Count];

      coll.CopyTo(cultures,0);

      int index = Array.IndexOf( cultures, language );

      if( index > -1){
        return language;
      }

      // convert to a CultureInfo object, so we can find the fall back culture
      CultureInfo reqCulture;
      try{
        reqCulture = new CultureInfo( language ); 
      }catch(Exception){
        return "en-US";
      }

      CultureInfo parent = (!reqCulture.IsNeutralCulture? reqCulture.Parent: reqCulture);
      
      foreach( string s in cultures ){
        CultureInfo current = new CultureInfo(s).Parent;

        // same parent should be good enough
        if( parent.Equals(current) ){
          return s;
        }
      }
      
      // if we don't support your language, we return en-us
      return "en-US";
    }
  }
}