/**************************************************************

	Script		: Validate
	Version		: 2.1
	Authors		: Samuel Birch
	Desc		: Form validation
	Licence		: Open Source MIT Licence
        Modified by     : opo.fr for postdreamer.com

**************************************************************/

var Validate = new Class({
	
	getOptions: function(){
		return {
			validateOnBlur: true,
			errorClass: 'error',
			errorMsgClass: 'errorMessage',
			dateFormat: 'dd/MM/yy',
			onFail: Class.empty,
			onSuccess: false,
			showErrorsInline: true,
			label: 'Please wait...'
		};
	},

        initialize: function(form, options){
                this.setOptions(this.getOptions(), options);
                
                this.form = $(form);
                this.elements = this.form.getElements('.required');
                
                this.list = [];
                
                this.elements.each(function(el,i){
                        if(this.options.validateOnBlur){
                                el.addEvent('blur', this.validate.bind(this, el));
                        }
                }.bind(this));
                
                this.form.addEvent('submit', function(e){
                        var event = new Event(e);
                        var doSubmit = true;
                        this.elements.each(function(el,i){
                                if(! this.validate(el)){
                                        event.stop();
                                        doSubmit = false
                                        this.list.include(el);
                                }else{
                                        this.list.remove(el);
                                }
                        }.bind(this));
                        
                        if(doSubmit){
                                if(this.options.onSuccess){
                                        event.stop();
                                        this.options.onSuccess(this.form);
                                }else{
                                        this.form.getElement('input[type=submit]').setProperty('value',this.options.label);
                                }
                        }else{
                                this.options.onFail(this.getList());
                        }
                        
                }.bind(this));
                
        },
	
	getList: function(){
		var list = new Element('ul');
		this.list.each(function(el,i){
			if(el.title != ''){
			var li = new Element('li').injectInside(list);
			new Element('label').setProperty('for', el.id).setText(el.title).injectInside(li);
			}
		});
		return list;
	},
	
	validate: function(el){
		var valid = true;
		this.clearMsg(el);
		
		switch(el.type){
			case 'text':
			case 'textarea':
			case 'select-one':
				if(el.value != ''){
					if(el.hasClass('email')){
						var regEmail = /^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/;
						if(el.value.toUpperCase().match(regEmail)){
							valid = true;
						}else{
							valid = false;
							this.setMsg(el, 'Please enter a valid email address');
						}
					}
					
					if(el.hasClass('number')){
						var regNum = /[-+]?[0-9]*\.?[0-9]+/;
						if(el.value.match(regNum)){
							valid = true;
						}else{
							valid = false;
							this.setMsg(el, 'Please enter a valid number');
						}
					}
					
					if(el.hasClass('postcode')){
						var regPC = /^([Gg][Ii][Rr] 0[Aa]{2})|((([A-Za-z][0-9]{1,2})|(([A-Za-z][A-Ha-hJ-Yj-y][0-9]{1,2})|(([A-Za-z][0-9][A-Za-z])|([A-Za-z][A-Ha-hJ-Yj-y][0-9]?[A-Za-z])))) [0-9][A-Za-z]{2})$/
						if(el.value.match(regPC)){
							valid = true;
						}else{
							valid = false;
							this.setMsg(el, 'Please enter a valid postcode');
						}
					}
					
					if(el.hasClass('date')){
						var d = Date.parseExact(el.value, this.options.dateFormat);
						if(d != null){
							valid = true;
						}else{
							valid = false;
							this.setMsg(el, 'Please enter a valid date in the format: '+this.options.dateFormat.toLowerCase());
						}
					}
					
				}else{
					valid = false;
					this.setMsg(el);
				}
				break;
				
			case 'checkbox':
/*
				if(!el.checked){
					valid = false;
					this.setMsg(el);
				}else{
					valid = true;
				}
				break;
*/
                                var rad = $A(this.form[el.name]);
                                var ok = false;
                                if(rad.length>0)
                                {
                                  rad.each(function(e,i){
                                    if(e.checked){
                                      ok = true;
                                    }
                                  });
                                }
                                else if(el.name == 'terms')
                                {
                                  if($('select_terms'))
                                  {
                                    if(el.checked) { el.parentNode.removeChild($('select_terms'));ok=true;}
                                    else {ok=false;}
                                  }
                                  else
                                  {
                                    if(el.checked) {ok=true;}
                                    else
                                    {
                                      var p = document.createElement('p');
                                      var txt = document.createTextNode('Please select');
                                      p.appendChild(txt);
                                      p.style.display = "inline";
                                      p.style.color = "#00FFFF";
                                      p.id = "select_terms";
                                      el.parentNode.appendChild(p);
                                      ok=false;
                                    }
                                  }
                                }
                                if(!ok)
                                {
                                  valid = false;
                                  if(rad.length>0){this.setMsg(rad.getLast().parentNode,'Please select at least an option');}
                                }
                                else
                                {
                                  valid = true;
                                  if(rad.length>0){this.clearMsg(rad.getLast().parentNode);}
                                }
                                break;				
			case 'radio':
				var rad = $A(this.form[el.name]);
				var ok = false;
				rad.each(function(e,i){
					if(e.checked){
						ok = true;
					}
				});
				if(!ok){
					valid = false;
					this.setMsg(rad.getLast(), 'Please select an option');
				}else{
					valid = true;
					this.clearMsg(rad.getLast());
				}
				break;
				
		}
		return valid;
	},
	
	setMsg: function(el, msg){
		if(msg == undefined){
			msg = el.title;
		}
		if(this.options.showErrorsInline){
			if(el.error == undefined){
				el.error = new Element('span').addClass(this.options.errorMsgClass).setText(msg).injectAfter(el);
			}else{
				el.error.setText(msg);
			}
			el.addClass(this.options.errorClass);
		}
	},
	
	clearMsg: function(el){
		el.removeClass(this.options.errorClass);
		if(el.error != undefined){
			el.error.remove();
			el.error = undefined;
		}
	}
	
});

Validate.implement(new Options);
Validate.implement(new Events);


/*************************************************************/