/**
 * jQuery custom checkboxes
 * 
 * Copyright (c) 2008 Khavilo Dmitry (http://widowmaker.kiev.ua/checkbox/)
 * Licensed under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 *
 * @version 1.0.0
 * @author Khavilo Dmitry
 * @mailto wm.morgun@gmail.com
**/

jQuery.fn.checkbox = function(options) {
	/* IE < 7.0 background flicker fix */
	if ( jQuery.browser.msie && (parseFloat(jQuery.browser.version) < 7) )
	{
		document.execCommand('BackgroundImageCache', false, true);	
	}
	/* Default settings */
	var settings = {
		cls: 'jquery-checkbox',  /* checkbox  */
		empty: 'images/empty.gif'  /* checkbox  */
	};
	
	/* Processing settings */
	settings = jQuery.extend(settings, options || {});
	
	/* Wrapping all passed elements */
	return this.each(function() 
	{
		/* Creating div for checkbox and assigning "hover" event */
		var div = jQuery('<div class="' + settings.cls + '-box"><div class="' + settings.cls + '"><div class="mark"><img src="'+urlRoot+settings.empty + '" /></div></div></div>').hover(
			function() { jQuery('.' + settings.cls, this).addClass(settings.cls + '-hover'); },
			function() { jQuery('.' + settings.cls, this).removeClass(settings.cls + '-hover'); }
		);
		
		/* If custom style was applied - removing it */
		if ( this._div && (oldDiv = jQuery(this._div)) )
		{
			clearInterval(this._int);
			oldDiv.replaceWith(jQuery(this));
		}		

		/* Wrapping checkbox */
		jQuery(this).after(div).css({display: 'none'}).appendTo(div);
		
		/* "disabled" & "checked" state changer hook */ 
		this._div = div;
		var el = this;
		this._disabled = (this.disabled ? true : false);
		this._checked = (this.checked ? true : false);
		this._int = setInterval(function() {
			if ( el._disabled != el.disabled ) {
				el._disabled = (el.disabled ? true : false);
				if ( el.disabled )
					jQuery('.' + settings.cls, div).addClass(settings.cls + '-disabled');
				else
					jQuery('.' + settings.cls, div).removeClass(settings.cls + '-disabled');			
			}
			if ( el._checked != el.checked ) {
				el._checked = (el.checked ? true : false);
				if ( el.checked )
					div.addClass(settings.cls + '-checked');
				else
					div.removeClass(settings.cls + '-checked');
			}
		}, 10);

		/* Creating "click" event handler for checkbox wrapper*/
		jQuery(div).click(function(){
			jQuery('input', this).click();
		});
		
		/* Disable image drag-n-drop  */
		jQuery('img', div).bind('dragstart', function () {return false;}).bind('mousedown', function () {return false;});
		
		/* Firefox div antiselection hack */
		if ( window.getSelection )
			jQuery(div).css('MozUserSelect', 'none');
		
		/* Applying checkbox state */
		if (this.checked)
			div.addClass(settings.cls + '-checked');
		if (this.disabled)
			jQuery('.' + settings.cls, div).addClass(settings.cls + '-disabled');
	});
};


/*
 *
 * Copyright (c) 2006-2008 Sam Collett (http://www.texotela.co.uk)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * Version 2.0.1
 * Demo: http://www.texotela.co.uk/code/jquery/checkboxes/
 *
 * $LastChangedDate: 2008-02-12 17:34:52 +0000 (Tue, 12 Feb 2008) $
 * $Rev: 4734 $
 */


/*
 * Toggle all checkboxes contained within a form
 *
 * @name     toggleCheckboxes
 * @param    filter   only toggle checkboxes matching this expression
 * @param    returnChecked   return checkboxes as jQuery object, default false
 * @author   Sam Collett (http://www.texotela.co.uk)
 * @example  $("#myform").toggleCheckboxes();
 * @example  $("#myform").toggleCheckboxes(".onlyme");
 * @example  $("#myform").toggleCheckboxes(":not(.notme)");
 * @example  $("#myform").toggleCheckboxes("*", true);
 *
 */
jQuery.fn.toggleCheckboxes = function(filter, returnChecked)
{
	filter = filter || "*";
	returnChecked = returnChecked || false;
	var returnWhat = jQuery([]);
	this.each(
		function()
		{
			var checked = jQuery("input[@type=checkbox]", this).filter(filter).each(
				function()
				{
					this.checked = !this.checked;
				}
			).filter(":checked");
			returnWhat = checked;
		}
	);
	if(!returnChecked)
	{
		returnWhat = this;
	}
	return returnWhat;
};

/*
 * Check all checkboxes contained within a form
 *
 * @name     checkCheckboxes
 * @param    filter   only check checkboxes matching this expression
 * @param    returnChecked   return checkboxes as jQuery object, default false
 * @author   Sam Collett (http://www.texotela.co.uk)
 * @example  $("#myform").checkCheckboxes();
 * @example  $("#myform").checkCheckboxes(".onlyme");
 * @example  $("#myform").checkCheckboxes(":not(.notme)");
 * @example  $("#myform").checkCheckboxes("*", true);
 *
 */
jQuery.fn.checkCheckboxes = function(filter, returnChecked)
{
	filter = filter || "*";
	returnChecked = returnChecked || false;
	var returnWhat = jQuery([]);
	this.each(
		function()
		{
			var checked = jQuery("input[@type=checkbox]", this).filter(filter).each(
				function()
				{
					this.checked = true;
				}
			).filter(":checked");
			returnWhat = checked;
		}
	);
	if(!returnChecked)
	{
		returnWhat = this;
	}
	return returnWhat;
};

/*
 * UnCheck all checkboxes contained within a form
 *
 * @name     unCheckCheckboxes
 * @param    filter   only check checkboxes matching this expression
 * @param    returnUnChecked   return unchecked checkboxes as jQuery object, default false
 * @author   Sam Collett (http://www.texotela.co.uk)
 * @example  $("#myform").unCheckCheckboxes();
 * @example  $("#myform").unCheckCheckboxes(".onlyme");
 * @example  $("#myform").unCheckCheckboxes(":not(.notme)");
 * @example  $("#myform").unCheckCheckboxes("*", true);
 *
 */
jQuery.fn.unCheckCheckboxes = function(filter, returnUnChecked)
{
	filter = filter || "*";
	returnUnChecked = returnUnChecked || false;
	var returnWhat = jQuery([]);
	this.each(
		function()
		{
			var unChecked = jQuery("input[@type=checkbox]", this).filter(filter).each(
				function()
				{
					this.checked = false;
				}
			).filter(":not(:checked)");
			returnWhat = unChecked;
		}
	);
	if(!returnUnChecked)
	{
		returnWhat = this;
	}
	return returnWhat;
};

/*
 * Makes checkboxes behave like a radio button group
 *   i.e. only one can be selected at a time
 *
 * @name     radioCheckboxGroup
 * @param    name  field name (leave blank to apply to all check boxes)
 * @param    filter  apply to checkboxes matching this expression
 * @author   Sam Collett (http://www.texotela.co.uk)
 * @example  $.radioCheckboxGroup("fieldname");
 * @example  $.radioCheckboxGroup("fieldname", ".myclass");
 * @example  $.radioCheckboxGroup("", ".myclass");
 *
 */
jQuery.radioCheckboxGroup = function(name, filter)
{
	filter = filter || "*";
	var expression = "input[@type=checkbox]";
	if(name)
	{
		expression += "[@name=" + name + "]"
	}
	var x = jQuery(expression).filter(filter);
	x.click(
		function()
		{
			// uncheck every other box with the same name
			x.not(this).each(
				function()
				{
					this.checked = false;
				}
			).end();
		}
	);
};