/*

	jQuery jxstabilate plugin
	Copyright (c) 2010 Gael Jaunin

	For support and tutorials visit
	http://www.xuserver.net/

	License: GNU Lesser General Public License (LGPL) 
	at http://opensource.org/licenses/lgpl-2.1.php

	This plugin is free software;  you can redistribute it  and/or  modify  it 
	under the terms of the GNU Lesser General Public License as  published  by 
	the Free Software Foundation;  either version 2.1 of the License,  or  (at 
	your option) any later version.
	This software is distributed in the hope  that  it  will  be  useful,  but 
	WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
	or FITNESS FOR A PARTICULAR PURPOSE.  See the  GNU Lesser  General  Public 
	License for more details.
	You should have received a copy of  the  GNU Lesser General Public License 
	along with this library;  if not,  write to the  Free Software Foundation, 
	Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

	THIS COMMENT AND COPYRIGHT NOTICE MUST BE RETAINED IN THE CODE AS IS FOR LEGAL USE

*/
jQuery.fn.stabilate = function(what, options) {
  var defaults = {
    className:'jx-stabilate'
  };
  var options = $.extend(defaults, options);
  function _stabilate(node, what) {
    var skip = 0;
    if (node.nodeType == 3) {
      var pos = node.data.toUpperCase().indexOf(what);
      if (pos >= 0) {
        var spannode = document.createElement('span');
        spannode.className = 'stabilate ' + options.className;        
        var middlebit = node.splitText(pos);
        var endbit = middlebit.splitText(what.length);
        var middleclone = middlebit.cloneNode(true);
        spannode.appendChild(middleclone);
        middlebit.parentNode.replaceChild(spannode, middlebit);
        skip = 1;
      }
    }else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
      for (var i = 0; i < node.childNodes.length; ++i) {
        i += _stabilate(node.childNodes[i], what);
      }
    }
    return skip;
  }
  return this.each(function() {
    _stabilate(this, what.toUpperCase());
  });
};

jQuery.fn.unstabilate = function() {
 return this.find("span.stabilate").each(function() {
  this.parentNode.firstChild.nodeName;
  with (this.parentNode) {
   replaceChild(this.firstChild, this);
   normalize();
  }
 }).end();
};



(function($){

	$.fn.alphanumeric = function(p) { 

		p = $.extend({
			ichars: "!@#$%^&*()+=[]\\\';,/{}|\":<>?~`.- ",
			nchars: "",
			allow: ""
		  }, p);	

		return this.each
			(
				function() 
				{

					if (p.nocaps) p.nchars += "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
					if (p.allcaps) p.nchars += "abcdefghijklmnopqrstuvwxyz";
					
					s = p.allow.split('');
					for ( i=0;i<s.length;i++) if (p.ichars.indexOf(s[i]) != -1) s[i] = "\\" + s[i];
					p.allow = s.join('|');
					
					var reg = new RegExp(p.allow,'gi');
					var ch = p.ichars + p.nchars;
					ch = ch.replace(reg,'');

					$(this).keypress
						(
							function (e)
								{
								
									if (!e.charCode) k = String.fromCharCode(e.which);
										else k = String.fromCharCode(e.charCode);
										
									if (ch.indexOf(k) != -1) e.preventDefault();
									if (e.ctrlKey&&k=='v') e.preventDefault();
									
								}
								
						);
						
					$(this).bind('contextmenu',function () {return false});
									
				}
			);

	};

	$.fn.numeric = function(p) {
	
		var az = "abcdefghijklmnopqrstuvwxyz";
		az += az.toUpperCase();

		p = $.extend({
			nchars: az
		  }, p);	
		  	
		return this.each (function()
			{
				$(this).alphanumeric(p);
			}
		);
			
	};
	
	$.fn.alpha = function(p) {

		var nm = "1234567890";

		p = $.extend({
			nchars: nm
		  }, p);	

		return this.each (function()
			{
				$(this).alphanumeric(p);
			}
		);
			
	};	

})(jQuery);