live-form-validation.js

/**
 * Live Form Validation for Nette Forms 3.0
 *
 * @author Robert Pösel, zakrava, Radek Ježdík, MartyIX, David Grudl
 * @version 2.0-dev
 * @url https://github.com/Robyer/nette-live-form-validation/
 */

var LiveForm = {
	options: {
		// CSS class of control's parent where error/valid class should be added; or "false" to use control directly
		showMessageClassOnParent: 'form-group',

		// CSS class of control's parent where error/valid message should be added (fallback to direct parent if not found); or "false" to use control's direct parent
		messageParentClass: false,

		// CSS class for an invalid control
		controlErrorClass: 'has-error',

		// CSS class for a valid control
		controlValidClass: 'has-success',

		// CSS class for an error message
		messageErrorClass: 'help-block text-danger',

		// control with this CSS class will show error/valid message even when control itself is hidden (useful for controls which are hidden and wrapped into special component)
		enableHiddenMessageClass: 'show-hidden-error',

		// control with this CSS class will have disabled live validation
		disableLiveValidationClass: 'no-live-validation',

		// control with this CSS class will not show valid message
		disableShowValidClass: 'no-show-valid',

		// tag that will hold the error/valid message
		messageTag: 'span',

		// message element id = control id + this postfix
		messageIdPostfix: '_message',

		// show this html before error message itself
		messageErrorPrefix: '&nbsp;<i class="glyphicon glyphicon-exclamation-sign" aria-hidden="true"></i>&nbsp;',

		// show all errors when submitting form; or use "false" to show only first error
		showAllErrors: true,

		// show message when valid
		showValid: false,

		// delay in ms before validating on keyup/keydown; or use "false" to disable it
		wait: false,

		// vertical screen offset in px to scroll after focusing element with error (useful when using fixed navbar menu which may otherwise obscure the element in focus); or use "false" for default behavior
		focusScreenOffsetY: false
	},

	forms: { }
};

LiveForm.setOptions = function(userOptions) {
	for (var prop in userOptions) {
		if (Object.prototype.hasOwnProperty.call(this.options, prop)) {
			this.options[prop] = userOptions[prop];
		}
	}
}

// Allow setting options before loading the script just by creating global LiveFormOptions object with options.
if (typeof window.LiveFormOptions !== 'undefined') {
	LiveForm.setOptions(window.LiveFormOptions);
}

LiveForm.isSpecialKey = function(k) {
	// http://stackoverflow.com/questions/7770561/jquery-javascript-reject-control-keys-on-keydown-event
	return (k == 20 /* Caps lock */
		|| k == 16 /* Shift */
		|| k == 9 /* Tab */
		|| k == 27 /* Escape Key */
		|| k == 17 /* Control Key */
		|| k == 91 /* Windows Command Key */
		|| k == 19 /* Pause Break */
		|| k == 18 /* Alt Key */
		|| k == 93 /* Right Click Point Key */
		|| (k >= 35 && k <= 40) /* Home, End, Arrow Keys */
		|| k == 45 /* Insert Key */
		|| (k >= 33 && k <= 34) /*Page Down, Page Up */
		|| (k >= 112 && k <= 123) /* F1 - F12 */
		|| (k >= 144 && k <= 145)); /* Num Lock, Scroll Lock */
}

/**
 * Handlers for all the events that trigger validation
 * YOU CAN CHANGE these handlers (ie. to use jQuery events instead)
 */
LiveForm.setupHandlers = function(el) {
	if (this.hasClass(el, this.options.disableLiveValidationClass))
		return;

	// Check if element was already initialized
	if (el.getAttribute("data-lfv-initialized"))
		return;

	// Remember we initialized this element so we won't do it again
	el.setAttribute('data-lfv-initialized', 'true');

	var handler = function(event) {
		event = event || window.event;
		Nette.validateControl(event.target ? event.target : event.srcElement);
	};

	var self = this;

	el.addEventListener('change', handler);
	el.addEventListener('blur', handler);
	el.addEventListener('keydown', function (event) {
		if (!self.isSpecialKey(event.which) && (self.options.wait === false || self.options.wait >= 200)) {
			// Hide validation span tag.
			self.removeClass(self.getGroupElement(this), self.options.controlErrorClass);
			self.removeClass(self.getGroupElement(this), self.options.controlValidClass);

			var messageEl = self.getMessageElement(this);
			messageEl.innerHTML = '';
			messageEl.className = '';

			// Cancel timeout to run validation handler
			if (self.timeout) {
				clearTimeout(self.timeout);
			}
		}
	});
	el.addEventListener('keyup', function (event) {
		if (self.options.wait !== false) {
			event = event || window.event;
			if (event.keyCode !== 9) {
				if (self.timeout) clearTimeout(self.timeout);
				self.timeout = setTimeout(function() {
					handler(event);
				}, self.options.wait);
			}
		}
	});
};

LiveForm.processServerErrors = function(el) {
	var messageEl = this.getMessageElement(el);
	var parentEl = this.getMessageParent(el); // This is parent element which contain the error elements

	var errors = [];

	// Find existing error elements by class (from server-validation)
	var errorEls = parentEl.getElementsByClassName(this.options.messageErrorClass);
	for (var i = errorEls.length - 1; i > -1; i--) {
		// Don't touch our main message element
		if (errorEls[i] == messageEl)
			continue;

		// Remove only direct children
		var errorParent = errorEls[i].parentNode;
		if (errorParent == parentEl) {
			errors.push(errorEls[i].outerHTML);
			errorParent.removeChild(errorEls[i]);
		}
	}

	// Wrap all server errors into one element
	if (errors.length > 0) {
		messageEl.innerHTML = errors.join("");
	}
};

LiveForm.addError = function(el, message) {
	// Ignore elements with disabled live validation
	if (this.hasClass(el, this.options.disableLiveValidationClass))
		return;

	var groupEl = this.getGroupElement(el);
	this.setFormProperty(el.form, "hasError", true);
	this.addClass(groupEl, this.options.controlErrorClass);

	if (this.options.showValid) {
		this.removeClass(groupEl, this.options.controlValidClass);
	}

	if (!message) {
		message = '&nbsp;';
	} else {
		message = this.options.messageErrorPrefix + message;
	}

	var messageEl = this.getMessageElement(el);
	messageEl.innerHTML = message;
	messageEl.className = this.options.messageErrorClass;
};

LiveForm.removeError = function(el) {
	// We don't want to remove any errors during onLoadValidation
	if (this.getFormProperty(el.form, "onLoadValidation"))
		return;

	var groupEl = this.getGroupElement(el);
	this.removeClass(groupEl, this.options.controlErrorClass);

	var id = el.getAttribute('data-lfv-message-id');
	if (id) {
		var messageEl = this.getMessageElement(el);
		messageEl.innerHTML = '';
		messageEl.className = '';
	}

	if (this.options.showValid) {
		if (this.showValid(el))
			this.addClass(groupEl, this.options.controlValidClass);
		else
			this.removeClass(groupEl, this.options.controlValidClass);
	}
};

LiveForm.showValid = function(el) {
	if (el.type) {
		var type = el.type.toLowerCase();
		if (type == 'checkbox' || type == 'radio') {
			return false;
		}
	}

	var rules = Nette.parseJSON(el.getAttribute('data-nette-rules'));
	if (rules.length == 0) {
		return false;
	}

	if (Nette.getEffectiveValue(el) == '') {
		return false;
	}

	if (this.hasClass(el, this.options.disableShowValidClass)) {
		return false;
	}

	return true;
};

LiveForm.getGroupElement = function(el) {
	if (this.options.showMessageClassOnParent === false)
		return el;

	var groupEl = el;

	while (!this.hasClass(groupEl, this.options.showMessageClassOnParent)) {
		groupEl = groupEl.parentNode;

		if (groupEl === null) {
			return el;
		}
	}

	return groupEl;
}

LiveForm.getMessageId = function(el) {
	var tmp = el.id + this.options.messageIdPostfix;

	// For elements without ID, or multi elements (with same name), we must generate whole ID ourselves
	if (el.name && (!el.id || !el.form.elements[el.name].tagName)) {
		// Strip possible [] from name
		var name = el.name.match(/\[\]$/) ? el.name.match(/(.*)\[\]$/)[1] : el.name;
		// Generate new ID based on form ID, element name and messageIdPostfix from options
		tmp = (el.form.id ? el.form.id : 'frm') + '-' + name + this.options.messageIdPostfix;
	}

	// We want unique ID which doesn't exist yet
	var id = tmp,
		i = 0;
	while (document.getElementById(id)) {
		id = id + '_' + ++i;
	}

	return id;
}

LiveForm.getMessageElement = function(el) {
	// For multi elements (with same name) work only with first element attributes
	if (el.name && el.name.match(/\[\]$/)) {
		el = el.form.elements[el.name].tagName ? el : el.form.elements[el.name][0];
	}

	var id = el.getAttribute('data-lfv-message-id');
	if (!id) {
		// ID is not specified yet, let's create a new one
		id = this.getMessageId(el);

		// Remember this id for next use
		el.setAttribute('data-lfv-message-id', id);
	}

	var messageEl = document.getElementById(id);
	if (!messageEl) {
		// Message element doesn't exist, lets create a new one
		messageEl = document.createElement(this.options.messageTag);
		messageEl.id = id;
		if (el.style.display == 'none' && !this.hasClass(el, this.options.enableHiddenMessageClass)) {
			messageEl.style.display = 'none';
		}

		var parentEl = this.getMessageParent(el);
		if (parentEl === el.parentNode) {
			parentEl.insertBefore(messageEl, el.nextSibling);
		} else if(parentEl) {
			typeof parentEl.append === 'function' ? parentEl.append(messageEl) : parentEl.appendChild(messageEl);
		}
	}

	return messageEl;
};

LiveForm.getMessageParent = function(el) {
	var parentEl = el.parentNode;
	var parentFound = false;

	if (this.options.messageParentClass !== false) {
		parentFound = true;
		while (!this.hasClass(parentEl, this.options.messageParentClass)) {
			parentEl = parentEl.parentNode;

			if (parentEl === null) {
				// We didn't found wanted parent, so use element's direct parent
				parentEl = el.parentNode;
				parentFound = false;
				break;
			}
		}
	}

	// Don't append error message to radio/checkbox input's label, but along label
	if (el.type) {
		var type = el.type.toLowerCase();
		if ((type == 'checkbox' || type == 'radio') && parentEl.tagName == 'LABEL') {
			parentEl = parentEl.parentNode;
		}
	}

	// For multi elements (with same name) use parent's parent as parent (if wanted one is not found)
	if (!parentFound && el.name && !el.form.elements[el.name].tagName) {
		parentEl = parentEl.parentNode;
	}

	return parentEl;
}

LiveForm.addClass = function(el, className) {
	if (!el.className) {
		el.className = className;
	} else if (!this.hasClass(el, className)) {
		el.className += ' ' + className;
	}
};

LiveForm.hasClass = function(el, className) {
	if (el.className)
		return el.className.match(new RegExp('(\\s|^)' + className + '(\\s|$)'));
	return false;
};

LiveForm.removeClass = function(el, className) {
	if (this.hasClass(el, className)) {
		var reg = new RegExp('(\\s|^)'+ className + '(\\s|$)');
		var m = el.className.match(reg);
		el.className = el.className.replace(reg, (m[1] == ' ' && m[2] == ' ') ? ' ' : '');
	}
};

LiveForm.getFormProperty = function(form, propertyName) {
	if (form == null || this.forms[form.id] == null)
		return false;

	return this.forms[form.id][propertyName];
};

LiveForm.setFormProperty = function(form, propertyName, value) {
	if (form == null)
		return;

	if (this.forms[form.id] == null)
		this.forms[form.id] = {};

	this.forms[form.id][propertyName] = value;
};

////////////////////////////   modified netteForms.js   ///////////////////////////////////

/**
 * NetteForms - simple form validation.
 *
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

(function(global, factory) {
	if (!global.JSON) {
		return;
	}

	if (typeof define === 'function' && define.amd) {
		define(function() {
			return factory(global);
		});
	} else if (typeof module === 'object' && typeof module.exports === 'object') {
		module.exports = factory(global);
	} else {
		var init = !global.Nette || !global.Nette.noInit;
		global.Nette = factory(global);
		if (init) {
			global.Nette.initOnLoad();
		}
	}

}(typeof window !== 'undefined' ? window : this, function(window) {

	'use strict';

	var Nette = {};
	var preventFiltering = {};
	var formToggles = {};

	// LiveForm: original netteForms.js code
	// Nette.formErrors = [];
	Nette.version = '3.0';


	/**
	 * Function to execute when the DOM is fully loaded.
	 * @private
	 */
	Nette.onDocumentReady = function(callback) {
		if (document.readyState !== 'loading') {
			callback.call(this);
		} else {
			document.addEventListener('DOMContentLoaded', callback);
		}
	};


	/**
	 * Returns the value of form element.
	 */
	Nette.getValue = function(elem) {
		var i;
		if (!elem) {
			return null;

		} else if (!elem.tagName) { // RadioNodeList, HTMLCollection, array
			return elem[0] ? Nette.getValue(elem[0]) : null;

		} else if (elem.type === 'radio') {
			var elements = elem.form.elements; // prevents problem with name 'item' or 'namedItem'
			for (i = 0; i < elements.length; i++) {
				if (elements[i].name === elem.name && elements[i].checked) {
					return elements[i].value;
				}
			}
			return null;

		} else if (elem.type === 'file') {
			return elem.files || elem.value;

		} else if (elem.tagName.toLowerCase() === 'select') {
			var index = elem.selectedIndex,
				options = elem.options,
				values = [];

			if (elem.type === 'select-one') {
				return index < 0 ? null : options[index].value;
			}

			for (i = 0; i < options.length; i++) {
				if (options[i].selected) {
					values.push(options[i].value);
				}
			}
			return values;

		} else if (elem.name && elem.name.match(/\[\]$/)) { // multiple elements []
			elements = elem.form.elements[elem.name].tagName ? [elem] : elem.form.elements[elem.name];
			values = [];

			for (i = 0; i < elements.length; i++) {
				// LiveForm: original netteForms.js code
				/*if (elements[i].type !== 'checkbox' || elements[i].checked) {
                    values.push(elements[i].value);
                }*/
				// LiveForm: addition
				var value = elements[i].value;
				if (elements[i].type === 'checkbox' && elements[i].checked) {
					values.push(value);
				} else if (elements[i].type !== 'checkbox' && value !== '') {
					values.push(value);
				}
			}
			return values;

		} else if (elem.type === 'checkbox') {
			return elem.checked;

		} else if (elem.tagName.toLowerCase() === 'textarea') {
			return elem.value.replace('\r', '');

		} else {
			return elem.value.replace('\r', '').replace(/^\s+|\s+$/g, '');
		}
	};


	/**
	 * Returns the effective value of form element.
	 */
	Nette.getEffectiveValue = function(elem, filter) {
		var val = Nette.getValue(elem);
		if (elem.getAttribute) {
			if (val === elem.getAttribute('data-nette-empty-value')) {
				val = '';
			}
		}
		if (filter && preventFiltering[elem.name] === undefined) {
			preventFiltering[elem.name] = true;
			var ref = {value: val};
			Nette.validateControl(elem, null, true, ref);
			val = ref.value;
			delete preventFiltering[elem.name];
		}
		return val;
	};


	/**
	 * Validates form element against given rules.
	 */
	Nette.validateControl = function(elem, rules, onlyCheck, value, emptyOptional) {
		// LiveForm: addition
		// Fix for CheckboxList - validation rules are present always only on first input
		if (elem.name && elem.name.match(/\[\]$/) && elem.type.toLowerCase() == 'checkbox') {
			elem = elem.form.elements[elem.name].tagName ? elem : elem.form.elements[elem.name][0];
		}

		elem = elem.tagName ? elem : elem[0]; // RadioNodeList
		rules = rules || JSON.parse(elem.getAttribute('data-nette-rules') || '[]');
		value = value === undefined ? {value: Nette.getEffectiveValue(elem)} : value;
		emptyOptional = emptyOptional || !Nette.validateRule(elem, ':filled', null, value);

		for (var id = 0, len = rules.length; id < len; id++) {
			var rule = rules[id],
				op = rule.op.match(/(~)?([^?]+)/),
				curElem = rule.control ? elem.form.elements.namedItem(rule.control) : elem;

			rule.neg = op[1];
			rule.op = op[2];
			rule.condition = !!rule.rules;

			if (!curElem) {
				continue;
			} else if (emptyOptional && !rule.condition && rule.op !== ':filled') {
				continue;
			}

			curElem = curElem.tagName ? curElem : curElem[0]; // RadioNodeList
			var success = Nette.validateRule(curElem, rule.op, rule.arg, elem === curElem ? value : undefined);

			if (success === null) {
				continue;
			} else if (rule.neg) {
				success = !success;
			}

			if (rule.condition && success) {
				if (!Nette.validateControl(elem, rule.rules, onlyCheck, value, rule.op === ':blank' ? false : emptyOptional)) {
					return false;
				}
			} else if (!rule.condition && !success) {
				if (Nette.isDisabled(curElem)) {
					continue;
				}
				if (!onlyCheck) {
					var arr = Array.isArray(rule.arg) ? rule.arg : [rule.arg],
						message = rule.msg.replace(/%(value|\d+)/g, function(foo, m) {
							return Nette.getValue(m === 'value' ? curElem : elem.form.elements.namedItem(arr[m].control));
						});
					Nette.addError(curElem, message);
				}
				return false;
			}
		}

		if (elem.type === 'number' && !elem.validity.valid) {
			if (!onlyCheck) {
				Nette.addError(elem, 'Please enter a valid value.');
			}
			return false;
		}

		// LiveForm: addition
		if (!onlyCheck) {
			LiveForm.removeError(elem);
		}

		return true;
	};


	/**
	 * Validates whole form.
	 */
	Nette.validateForm = function(sender, onlyCheck) {
		var form = sender.form || sender,
			scope = false;

		// LiveForm: addition
		LiveForm.setFormProperty(form, "hasError", false);

		// LiveForm: original netteForms.js code
		// Nette.formErrors = [];

		if (form['nette-submittedBy'] && form['nette-submittedBy'].getAttribute('formnovalidate') !== null) {
			var scopeArr = JSON.parse(form['nette-submittedBy'].getAttribute('data-nette-validation-scope') || '[]');
			if (scopeArr.length) {
				scope = new RegExp('^(' + scopeArr.join('-|') + '-)');
			} else {
				// LiveForm: original netteForms.js code
				// Nette.showFormErrors(form, []);
				return true;
			}
		}

		var radios = {}, i, elem;
		// LiveForm: addition
		var success = true;

		for (i = 0; i < form.elements.length; i++) {
			elem = form.elements[i];

			if (elem.tagName && !(elem.tagName.toLowerCase() in {input: 1, select: 1, textarea: 1, button: 1})) {
				continue;

			} else if (elem.type === 'radio') {
				if (radios[elem.name]) {
					continue;
				}
				radios[elem.name] = true;
			}

			if ((scope && !elem.name.replace(/]\[|\[|]|$/g, '-').match(scope)) || Nette.isDisabled(elem)) {
				continue;
			}

			// LiveForm: addition
			success = Nette.validateControl(elem) && success;
			if (!success && !LiveForm.options.showAllErrors) {
				break;
			}
			// LiveForm: original netteForms.js code
			/*if (!Nette.validateControl(elem, null, onlyCheck) && !Nette.formErrors.length) {
                return false;
            }*/
		}

		// LiveForm: change
		return success;

		// LiveForm: original netteForms.js code
		/*var success = !Nette.formErrors.length;
        Nette.showFormErrors(form, Nette.formErrors);
        return success;*/
	};


	/**
	 * Check if input is disabled.
	 */
	Nette.isDisabled = function(elem) {
		if (elem.type === 'radio') {
			for (var i = 0, elements = elem.form.elements; i < elements.length; i++) {
				if (elements[i].name === elem.name && !elements[i].disabled) {
					return false;
				}
			}
			return true;
		}
		return elem.disabled;
	};


	// LiveForm: change
	/**
	 * Display error message.
	 */
	Nette.addError = function(elem, message) {
		// LiveForm: addition
		var noLiveValidation = LiveForm.hasClass(elem, LiveForm.options.disableLiveValidationClass);
		// User explicitly disabled live-validation so we want to show simple alerts
		if (noLiveValidation) {
			// notify errors for elements with disabled live validation (but only errors and not during onLoadValidation)
			if (message && !LiveForm.getFormProperty(elem.form, "hasError") && !LiveForm.getFormProperty(elem.form, "onLoadValidation")) {
				alert(message);
			}
		}
		if (elem.focus && !LiveForm.getFormProperty(elem.form, "hasError")) {
			if (!LiveForm.focusing) {
				LiveForm.focusing = true;
				elem.focus();
				setTimeout(function() {
					LiveForm.focusing = false;

					// Scroll by defined offset (if enabled)
					// NOTE: We use it with setTimetout because IE9 doesn't always catch instant scrollTo request
					var focusOffsetY = LiveForm.options.focusScreenOffsetY;
					if (focusOffsetY !== false && elem.getBoundingClientRect().top < focusOffsetY) {
						window.scrollBy(0, elem.getBoundingClientRect().top - focusOffsetY);
					}
				}, 10);
			}
		}
		if (!noLiveValidation) {
			LiveForm.addError(elem, message);
		}
	};


	// LiveForm: original netteForms.js code
	/*/!**
     * Adds error message to the queue.
     *!/
    Nette.addError = function(elem, message) {
        Nette.formErrors.push({
            element: elem,
            message: message
        });
    };*/


	// LiveForm: original netteForms.js code
	/*/!**
     * Display error messages.
     *!/
    Nette.showFormErrors = function(form, errors) {
        var messages = [],
            focusElem;

        for (var i = 0; i < errors.length; i++) {
            var elem = errors[i].element,
                message = errors[i].message;

            if (messages.indexOf(message) < 0) {
                messages.push(message);

                if (!focusElem && elem.focus) {
                    focusElem = elem;
                }
            }
        }

        if (messages.length) {
            alert(messages.join('\n'));

            if (focusElem) {
                focusElem.focus();
            }
        }
    };*/


	/**
	 * Validates single rule.
	 */
	Nette.validateRule = function(elem, op, arg, value) {
		value = value === undefined ? {value: Nette.getEffectiveValue(elem, true)} : value;

		if (op.charAt(0) === ':') {
			op = op.substr(1);
		}
		op = op.replace('::', '_');
		op = op.replace(/\\/g, '');

		var arr = Array.isArray(arg) ? arg.slice(0) : [arg];
		for (var i = 0, len = arr.length; i < len; i++) {
			if (arr[i] && arr[i].control) {
				var control = elem.form.elements.namedItem(arr[i].control);
				arr[i] = control === elem ? value.value : Nette.getEffectiveValue(control, true);
			}
		}

		return Nette.validators[op]
			? Nette.validators[op](elem, Array.isArray(arg) ? arr : arr[0], value.value, value)
			: null;
	};


	Nette.validators = {
		filled: function(elem, arg, val) {
			if (elem.type === 'number' && elem.validity.badInput) {
				return true;
			}
			return val !== '' && val !== false && val !== null
				&& (!Array.isArray(val) || !!val.length)
				&& (!window.FileList || !(val instanceof window.FileList) || val.length);
		},

		blank: function(elem, arg, val) {
			return !Nette.validators.filled(elem, arg, val);
		},

		valid: function(elem) {
			return Nette.validateControl(elem, null, true);
		},

		equal: function(elem, arg, val) {
			if (arg === undefined) {
				return null;
			}

			function toString(val) {
				if (typeof val === 'number' || typeof val === 'string') {
					return '' + val;
				} else {
					return val === true ? '1' : '';
				}
			}

			val = Array.isArray(val) ? val : [val];
			arg = Array.isArray(arg) ? arg : [arg];
			loop:
				for (var i1 = 0, len1 = val.length; i1 < len1; i1++) {
					for (var i2 = 0, len2 = arg.length; i2 < len2; i2++) {
						if (toString(val[i1]) === toString(arg[i2])) {
							continue loop;
						}
					}
					return false;
				}
			return true;
		},

		notEqual: function(elem, arg, val) {
			return arg === undefined ? null : !Nette.validators.equal(elem, arg, val);
		},

		minLength: function(elem, arg, val) {
			if (elem.type === 'number') {
				if (elem.validity.tooShort) {
					return false;
				} else if (elem.validity.badInput) {
					return null;
				}
			}
			return val.length >= arg;
		},

		maxLength: function(elem, arg, val) {
			if (elem.type === 'number') {
				if (elem.validity.tooLong) {
					return false;
				} else if (elem.validity.badInput) {
					return null;
				}
			}
			return val.length <= arg;
		},

		length: function(elem, arg, val) {
			if (elem.type === 'number') {
				if (elem.validity.tooShort || elem.validity.tooLong) {
					return false;
				} else if (elem.validity.badInput) {
					return null;
				}
			}
			arg = Array.isArray(arg) ? arg : [arg, arg];
			return (arg[0] === null || val.length >= arg[0]) && (arg[1] === null || val.length <= arg[1]);
		},

		email: function(elem, arg, val) {
			return (/^("([ !#-[\]-~]|\\[ -~])+"|[-a-z0-9!#$%&'*+/=?^_`{|}~]+(\.[-a-z0-9!#$%&'*+/=?^_`{|}~]+)*)@([0-9a-z\u00C0-\u02FF\u0370-\u1EFF]([-0-9a-z\u00C0-\u02FF\u0370-\u1EFF]{0,61}[0-9a-z\u00C0-\u02FF\u0370-\u1EFF])?\.)+[a-z\u00C0-\u02FF\u0370-\u1EFF]([-0-9a-z\u00C0-\u02FF\u0370-\u1EFF]{0,17}[a-z\u00C0-\u02FF\u0370-\u1EFF])?$/i).test(val);
		},

		url: function(elem, arg, val, value) {
			if (!(/^[a-z\d+.-]+:/).test(val)) {
				val = 'http://' + val;
			}
			if ((/^https?:\/\/((([-_0-9a-z\u00C0-\u02FF\u0370-\u1EFF]+\.)*[0-9a-z\u00C0-\u02FF\u0370-\u1EFF]([-0-9a-z\u00C0-\u02FF\u0370-\u1EFF]{0,61}[0-9a-z\u00C0-\u02FF\u0370-\u1EFF])?\.)?[a-z\u00C0-\u02FF\u0370-\u1EFF]([-0-9a-z\u00C0-\u02FF\u0370-\u1EFF]{0,17}[a-z\u00C0-\u02FF\u0370-\u1EFF])?|\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}|\[[0-9a-f:]{3,39}\])(:\d{1,5})?(\/\S*)?$/i).test(val)) {
				value.value = val;
				return true;
			}
			return false;
		},

		regexp: function(elem, arg, val) {
			var parts = typeof arg === 'string' ? arg.match(/^\/(.*)\/([imu]*)$/) : false;
			try {
				return parts && (new RegExp(parts[1], parts[2].replace('u', ''))).test(val);
			} catch (e) {} // eslint-disable-line no-empty
		},

		pattern: function(elem, arg, val, value, caseInsensitive) {
			if (typeof arg !== 'string') {
				return null;
			}

			try {
				try {
					var regExp = new RegExp('^(?:' + arg + ')$', caseInsensitive ? 'ui' : 'u');
				} catch (e) {
					regExp = new RegExp('^(?:' + arg + ')$', caseInsensitive ? 'i' : '');
				}

				if (window.FileList && val instanceof FileList) {
					for (var i = 0; i < val.length; i++) {
						if (!regExp.test(val[i].name)) {
							return false;
						}
					}

					return true;
				}

				return regExp.test(val);
			} catch (e) {} // eslint-disable-line no-empty
		},

		patternCaseInsensitive: function(elem, arg, val) {
			return Nette.validators.pattern(elem, arg, val, null, true);
		},

		numeric: function(elem, arg, val) {
			if (elem.type === 'number' && elem.validity.badInput) {
				return false;
			}
			return (/^[0-9]+$/).test(val);
		},

		integer: function(elem, arg, val) {
			if (elem.type === 'number' && elem.validity.badInput) {
				return false;
			}
			return (/^-?[0-9]+$/).test(val);
		},

		'float': function(elem, arg, val, value) {
			if (elem.type === 'number' && elem.validity.badInput) {
				return false;
			}
			val = val.replace(/ +/g, '').replace(/,/g, '.');
			if ((/^-?[0-9]*\.?[0-9]+$/).test(val)) {
				value.value = val;
				return true;
			}
			return false;
		},

		min: function(elem, arg, val) {
			if (elem.type === 'number') {
				if (elem.validity.rangeUnderflow) {
					return false;
				} else if (elem.validity.badInput) {
					return null;
				}
			}
			return arg === null || parseFloat(val) >= arg;
		},

		max: function(elem, arg, val) {
			if (elem.type === 'number') {
				if (elem.validity.rangeOverflow) {
					return false;
				} else if (elem.validity.badInput) {
					return null;
				}
			}
			return arg === null || parseFloat(val) <= arg;
		},

		range: function(elem, arg, val) {
			if (elem.type === 'number') {
				if (elem.validity.rangeUnderflow || elem.validity.rangeOverflow) {
					return false;
				} else if (elem.validity.badInput) {
					return null;
				}
			}
			return Array.isArray(arg) ?
				((arg[0] === null || parseFloat(val) >= arg[0]) && (arg[1] === null || parseFloat(val) <= arg[1])) : null;
		},

		submitted: function(elem) {
			return elem.form['nette-submittedBy'] === elem;
		},

		fileSize: function(elem, arg, val) {
			if (window.FileList) {
				for (var i = 0; i < val.length; i++) {
					if (val[i].size > arg) {
						return false;
					}
				}
			}
			return true;
		},

		image: function (elem, arg, val) {
			if (window.FileList && val instanceof window.FileList) {
				for (var i = 0; i < val.length; i++) {
					var type = val[i].type;
					if (type && type !== 'image/gif' && type !== 'image/png' && type !== 'image/jpeg') {
						return false;
					}
				}
			}
			return true;
		},

		'static': function (elem, arg) {
			return arg;
		}
	};


	/**
	 * Process all toggles in form.
	 */
	Nette.toggleForm = function(form, elem) {
		var i;
		formToggles = {};
		for (i = 0; i < form.elements.length; i++) {
			if (form.elements[i].tagName.toLowerCase() in {input: 1, select: 1, textarea: 1, button: 1}) {
				Nette.toggleControl(form.elements[i], null, null, !elem);
			}
		}

		for (i in formToggles) {
			Nette.toggle(i, formToggles[i], elem);
		}
	};


	/**
	 * Process toggles on form element.
	 */
	Nette.toggleControl = function(elem, rules, success, firsttime, value) {
		rules = rules || JSON.parse(elem.getAttribute('data-nette-rules') || '[]');
		value = value === undefined ? {value: Nette.getEffectiveValue(elem)} : value;

		var has = false,
			handled = [],
			handler = function () {
				Nette.toggleForm(elem.form, elem);
			},
			curSuccess;

		for (var id = 0, len = rules.length; id < len; id++) {
			var rule = rules[id],
				op = rule.op.match(/(~)?([^?]+)/),
				curElem = rule.control ? elem.form.elements.namedItem(rule.control) : elem;

			if (!curElem) {
				continue;
			}

			curSuccess = success;
			if (success !== false) {
				rule.neg = op[1];
				rule.op = op[2];
				curSuccess = Nette.validateRule(curElem, rule.op, rule.arg, elem === curElem ? value : undefined);
				if (curSuccess === null) {
					continue;

				} else if (rule.neg) {
					curSuccess = !curSuccess;
				}
				if (!rule.rules) {
					success = curSuccess;
				}
			}

			if ((rule.rules && Nette.toggleControl(elem, rule.rules, curSuccess, firsttime, value)) || rule.toggle) {
				has = true;
				if (firsttime) {
					var name = curElem.tagName ? curElem.name : curElem[0].name,
						els = curElem.tagName ? curElem.form.elements : curElem;

					for (var i = 0; i < els.length; i++) {
						if (els[i].name === name && handled.indexOf(els[i]) < 0) {
							els[i].addEventListener('change', handler);
							handled.push(els[i]);
						}
					}
				}
				for (var id2 in rule.toggle || []) {
					if (Object.prototype.hasOwnProperty.call(rule.toggle, id2)) {
						formToggles[id2] = formToggles[id2] || (rule.toggle[id2] ? curSuccess : !curSuccess);
					}
				}
			}
		}
		return has;
	};


	/**
	 * Displays or hides HTML element.
	 */
	Nette.toggle = function(selector, visible, srcElement) { // eslint-disable-line no-unused-vars
		if (/^\w[\w.:-]*$/.test(selector)) { // id
			selector = '#' + selector;
		}
		var elems = document.querySelectorAll(selector);
		for (var i = 0; i < elems.length; i++) {
			elems[i].hidden = !visible;
		}
	};


	/**
	 * Setup handlers.
	 */
	Nette.initForm = function(form) {
		Nette.toggleForm(form);

		if (form.noValidate) {
			return;
		}

		form.noValidate = true;

		// LiveForm: addition
		LiveForm.forms[form.id] = {
			hasError: false,
			onLoadValidation: false
		};

		form.addEventListener('submit', function(e) {
			if (!Nette.validateForm(form)) {
				e.stopPropagation();
				e.preventDefault();
			}
		});

		// LiveForm: addition
		for (var i = 0; i < form.elements.length; i++) {
			LiveForm.setupHandlers(form.elements[i]);
			LiveForm.processServerErrors(form.elements[i]);
		}
	};


	/**
	 * @private
	 */
	Nette.initOnLoad = function() {
		Nette.onDocumentReady(function() {
			for (var i = 0; i < document.forms.length; i++) {
				var form = document.forms[i];
				for (var j = 0; j < form.elements.length; j++) {
					if (form.elements[j].getAttribute('data-nette-rules')) {
						Nette.initForm(form);

						// LiveForm: addition
						if (LiveForm.hasClass(form, 'validate-on-load')) {
							// This is not so nice way, but I don't want to spoil validateForm, validateControl and other methods with another parameter
							LiveForm.setFormProperty(form, "onLoadValidation", true);
							Nette.validateForm(form);
							LiveForm.setFormProperty(form, "onLoadValidation", false);
						}

						break;
					}
				}
			}

			document.body.addEventListener('click', function(e) {
				var target = e.target;
				while (target) {
					if (target.form && target.type in {submit: 1, image: 1}) {
						target.form['nette-submittedBy'] = target;
						break;
					}
					target = target.parentNode;
				}
			});
		});
	};


	/**
	 * Converts string to web safe characters [a-z0-9-] text.
	 */
	Nette.webalize = function(s) {
		s = s.toLowerCase();
		var res = '', i, ch;
		for (i = 0; i < s.length; i++) {
			ch = Nette.webalizeTable[s.charAt(i)];
			res += ch ? ch : s.charAt(i);
		}
		return res.replace(/[^a-z0-9]+/g, '-').replace(/^-|-$/g, '');
	};

	Nette.webalizeTable = {\u00e1: 'a', \u00e4: 'a', \u010d: 'c', \u010f: 'd', \u00e9: 'e', \u011b: 'e', \u00ed: 'i', \u013e: 'l', \u0148: 'n', \u00f3: 'o', \u00f4: 'o', \u0159: 'r', \u0161: 's', \u0165: 't', \u00fa: 'u', \u016f: 'u', \u00fd: 'y', \u017e: 'z'};

	return Nette;
}));