/*! Copyright 2009 Tim Savage <tim.savage@jooceylabs.com>
 * Licensed under the BSD license (http://www.opensource.org/licenses/bsd-license.php)
 *
 * Version: 0.2
 * Requires jQuery 1.2.6+
 * Docs: http://code.google.com/p/django-ajax-forms/
 */

(function($){function log(message){if(window.console){console.debug(message);}}
$.fn.validation=function(fields,options){var opts=$.extend({},$.validation.defaults,options);return $(this).each(function(){var form=$(this);for(var name in fields){var field=$(':input[name='+name+']',form);if(field){field.data('validation',fields[name]);for(var idx in opts.validation_events){field.bind(opts.validation_events[idx],function(e){if(e.keyCode===9){return;}
validate_field($(this),opts);});}
if(opts.add_required_indicators){$('label[for='+field[0].id+']',form).after('<span class="required">*</span>');}}}
form.validate=function(event){var first_fail=null;for(var name in fields){var field=form.find(':input[name='+name+']');if(field){if(!validate_field(field,opts)){if(first_fail==null){first_fail=field;}}}}
if(first_fail){first_fail.focus().scroll();}else{if(opts.on_form_valid)opts.on_form_valid(event,form);}
return first_fail==null;}
form.submit(form.validate);});};function validate_field(field,opts){var parent=opts.callbacks.get_parent_element(field,opts);var field_valid=true;var validation=field.data('validation');var value=field.val();if(field[0].type&&field[0].type=="checkbox"){if(!field[0].checked){value=null;}}
parent.removeClass(opts.style.valid);parent.removeClass(opts.style.invalid);parent.addClass(opts.style.processing);try{if(value&&value.length>0){for(var rule in validation.rules){var rule_func=$.validation.rules[rule]
if(rule_func){rule_func(field[0],validation.rules[rule],value,validation.msgs);}else{log('Rule not found: '+rule);}}}else{if(validation.required){throw new ValidationError(validation.msgs['required']);}}
opts.callbacks.clear_error(field,opts);}catch(e){if(e.name&&e.name=='ValidationError'){field_valid=false;opts.callbacks.show_error(field,e.message,opts);}else{log(e.message);throw e;}}
if(field_valid){parent.addClass(opts.style.valid);}else{parent.addClass(opts.style.invalid);}
parent.removeClass(opts.style.processing);return field_valid;}
$.validation=new Object();$.validation.rules={};$.validation.ValidationError=function(msg,params){params=params||[];for(idx in params){msg=msg.replace(idx,params[idx]);}
var err=new Error(msg);err.name="ValidationError";return err;}
var ValidationError=$.validation.ValidationError;$.validation.defaults={layout:'table',add_required_indicators:false,validation_events:['blur'],style:{valid:'valid',invalid:'invalid',processing:'processing',error_list:'errorlist'},on_form_valid:function(event,form){},callbacks:{get_parent_element:function(field,opts){var parent=field.data('parent');if(!parent){if(opts.layout=='table'){parent=field.parent().parent();}else{parent=field.parent();}
field.data('parent',parent);}
return parent;},show_error:function(field,msg,opts){var errors=field.siblings('ul.'+opts.style.error_list);if(errors.length){errors.empty();}else{errors=$('<ul>').addClass(opts.style.error_list).hide();if(opts.layout=='table'){errors.insertBefore(field);}else if(opts.layout=='dl'){field.parent().append(errors);}else{field.parent().prepend(errors);}}
$('<li>').text(msg).appendTo(errors);errors.fadeIn();},clear_error:function(field,opts){field.siblings('ul.'+opts.style.error_list).fadeOut(function(){$(this).hide();});}}};})(jQuery);