CodePaste.NET - Upcoming ability to write jQuery plugins in c#

   1:  // LivePreviewPlugin.cs
   2:  //
   3:   
   4:  using System;
   5:  using System.Collections;
   6:  using System.Html;
   7:  using System.Runtime.CompilerServices;
   8:  using jQueryApi;
   9:   
  10:  [Imported]
  11:  public sealed class LivePreviewOptions : Record {
  12:   
  13:      public RegularExpression ParaRegExp;
  14:      public RegularExpression LineBreakRegExp;
  15:      public string[] AllowedTags;
  16:      public int Interval;
  17:      public Element[] PreviewElement;
  18:  }
  19:   
  20:  [GlobalMethods("$.fn")]
  21:  public static class LivePreviewPlugin {
  22:   
  23:      public static jQueryObject LivePreview(Dictionary customOptions) {
  24:          Dictionary defaultOptions =
  25:              new Dictionary("paraRegExp", new RegularExpression("(.*)\n\n([^#*\n\n].*)", "g"),
  26:                             "linBreakRegExp", new RegularExpression("(.*)\n([^#*\n].*)", "g"),
  27:                             "allowedTags", new string[] {"a", "b", "strong", "blockquote", "p", "i", "em", "u", "strike", "super", "sub", "code"},
  28:                             "interval", 80);
  29:   
  30:          LivePreviewOptions options = (LivePreviewOptions)jQuery.Extend(new Dictionary(), defaultOptions, customOptions);
  31:   
  32:          int previewMaxIndex = options.PreviewElement.Length - 1;
  33:          RegularExpression allowedTagsRegExp =
  34:              new RegularExpression("&lt;(/?(" + options.AllowedTags.Join("|") + ")(\\s+.*?)?)&gt;", "g");
  35:   
  36:          return jQuery.Current.Each(delegate(int i, Element element) {
  37:              jQueryObject textArea = jQuery.FromElement(element);
  38:              jQueryObject preview = jQuery.FromElement(options.PreviewElement[Math.Min(i, previewMaxIndex)]);
  39:              bool updatingPreview = false;
  40:   
  41:              Action updatePreview = delegate() {
  42:                  string previewString = textArea.Value();
  43:                  if (previewString.Length > 0) {
  44:                      previewString = previewString.HtmlEncode();
  45:                      previewString = previewString.ReplaceRegex(options.ParaRegExp, "<p>$1</p><p>$2</p>");
  46:                      previewString = previewString.ReplaceRegex(options.LineBreakRegExp, "$1<br />$2");
  47:                      previewString = previewString.ReplaceRegex(allowedTagsRegExp, "<$1>");
  48:                  }
  49:   
  50:                  preview.Html(previewString);
  51:                  updatingPreview = false;
  52:              };
  53:   
  54:              jQueryEventHandler keyUpHandler = delegate(jQueryEvent e) {
  55:                  if (!updatingPreview) {
  56:                      updatingPreview = true;
  57:                      Window.SetTimeout(updatePreview, options.Interval);
  58:                  }
  59:              };
  60:   
  61:              textArea.Bind("keyup", keyUpHandler);
  62:              updatePreview();
  63:          });
  64:      }
  65:  }