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/** * Yii form widget. * * This is the JavaScript widget used by the yii\widgets\ActiveForm widget. * * @link https://www.yiiframework.com/ * @copyright Copyright (c) 2008 Yii Software LLC * @license https://www.yiiframework.com/license/ * @author Qiang Xue <qiang.xue@gmail.com> * @since 2.0 */ (function ($) { $.fn.yiiActiveForm = function (method) { if (methods[method]) { return methods[method].apply(this, Array.prototype.slice.call(arguments, 1)); } else { if (typeof method === 'object' || !method) { return methods.init.apply(this, arguments); } else { $.error('Method ' + method + ' does not exist on jQuery.yiiActiveForm'); return false; } } }; var events = { /** * beforeValidate event is triggered before validating the whole form. * The signature of the event handler should be: * function (event, messages, deferreds) * where * - event: an Event object. * - messages: an associative array with keys being attribute IDs and values being error message arrays * for the corresponding attributes. * - deferreds: an array of Deferred objects. You can use deferreds.add(callback) to add a new deferred validation. * * If the handler returns a boolean false, it will stop further form validation after this event. And as * a result, afterValidate event will not be triggered. */ beforeValidate: 'beforeValidate', /** * afterValidate event is triggered after validating the whole form. * The signature of the event handler should be: * function (event, messages, errorAttributes) * where * - event: an Event object. * - messages: an associative array with keys being attribute IDs and values being error message arrays * for the corresponding attributes. * - errorAttributes: an array of attributes that have validation errors. Please refer to attributeDefaults for the structure of this parameter. */ afterValidate: 'afterValidate', /** * beforeValidateAttribute event is triggered before validating an attribute. * The signature of the event handler should be: * function (event, attribute, messages, deferreds) * where * - event: an Event object. * - attribute: the attribute to be validated. Please refer to attributeDefaults for the structure of this parameter. * - messages: an array to which you can add validation error messages for the specified attribute. * - deferreds: an array of Deferred objects. You can use deferreds.add(callback) to add a new deferred validation. * * If the handler returns a boolean false, it will stop further validation of the specified attribute. * And as a result, afterValidateAttribute event will not be triggered. */ beforeValidateAttribute: 'beforeValidateAttribute', /** * afterValidateAttribute event is triggered after validating the whole form and each attribute. * The signature of the event handler should be: * function (event, attribute, messages) * where * - event: an Event object. * - attribute: the attribute being validated. Please refer to attributeDefaults for the structure of this parameter. * - messages: an array to which you can add additional validation error messages for the specified attribute. */ afterValidateAttribute: 'afterValidateAttribute', /** * beforeSubmit event is triggered before submitting the form after all validations have passed. * The signature of the event handler should be: * function (event) * where event is an Event object. * * If the handler returns a boolean false, it will stop form submission. */ beforeSubmit: 'beforeSubmit', /** * ajaxBeforeSend event is triggered before sending an AJAX request for AJAX-based validation. * The signature of the event handler should be: * function (event, jqXHR, settings) * where * - event: an Event object. * - jqXHR: a jqXHR object * - settings: the settings for the AJAX request */ ajaxBeforeSend: 'ajaxBeforeSend', /** * ajaxComplete event is triggered after completing an AJAX request for AJAX-based validation. * The signature of the event handler should be: * function (event, jqXHR, textStatus) * where * - event: an Event object. * - jqXHR: a jqXHR object * - textStatus: the status of the request ("success", "notmodified", "error", "timeout", "abort", or "parsererror"). */ ajaxComplete: 'ajaxComplete', /** * afterInit event is triggered after yii activeForm init. * The signature of the event handler should be: * function (event) * where * - event: an Event object. */ afterInit: 'afterInit' }; // NOTE: If you change any of these defaults, make sure you update yii\widgets\ActiveForm::getClientOptions() as well var defaults = { // whether to encode the error summary encodeErrorSummary: true, // the jQuery selector for the error summary errorSummary: '.error-summary', // whether to perform validation before submitting the form. validateOnSubmit: true, // the container CSS class representing the corresponding attribute has validation error errorCssClass: 'has-error', // the container CSS class representing the corresponding attribute passes validation successCssClass: 'has-success', // the container CSS class representing the corresponding attribute is being validated validatingCssClass: 'validating', // the GET parameter name indicating an AJAX-based validation ajaxParam: 'ajax', // the type of data that you're expecting back from the server ajaxDataType: 'json', // the URL for performing AJAX-based validation. If not set, it will use the the form's action validationUrl: undefined, // whether to scroll to first visible error after validation. scrollToError: true, // offset in pixels that should be added when scrolling to the first error. scrollToErrorOffset: 0, // where to add validation class: container or input validationStateOn: 'container' }; // NOTE: If you change any of these defaults, make sure you update yii\widgets\ActiveField::getClientOptions() as well var attributeDefaults = { // a unique ID identifying an attribute (e.g. "loginform-username") in a form id: undefined, // attribute name or expression (e.g. "[0]content" for tabular input) name: undefined, // the jQuery selector of the container of the input field container: undefined, // the jQuery selector of the input field under the context of the form input: undefined, // the jQuery selector of the error tag under the context of the container error: '.help-block', // whether to encode the error encodeError: true, // whether to perform validation when a change is detected on the input validateOnChange: true, // whether to perform validation when the input loses focus validateOnBlur: true, // whether to perform validation when the user is typing. validateOnType: false, // number of milliseconds that the validation should be delayed when a user is typing in the input field. validationDelay: 500, // whether to enable AJAX-based validation. enableAjaxValidation: false, // function (attribute, value, messages, deferred, $form), the client-side validation function. validate: undefined, // status of the input field, 0: empty, not entered before, 1: validated, 2: pending validation, 3: validating status: 0, // whether the validation is cancelled by beforeValidateAttribute event handler cancelled: false, // the value of the input value: undefined, // whether to update aria-invalid attribute after validation updateAriaInvalid: true }; var submitDefer; var setSubmitFinalizeDefer = function ($form) { submitDefer = $.Deferred(); $form.data('yiiSubmitFinalizePromise', submitDefer.promise()); }; // finalize yii.js $form.submit var submitFinalize = function ($form) { if (submitDefer) { submitDefer.resolve(); submitDefer = undefined; $form.removeData('yiiSubmitFinalizePromise'); } }; var methods = { init: function (attributes, options) { return this.each(function () { var $form = $(this); if ($form.data('yiiActiveForm')) { return; } var settings = $.extend({}, defaults, options || {}); if (settings.validationUrl === undefined) { settings.validationUrl = $form.attr('action'); } $.each(attributes, function (i) { attributes[i] = $.extend({value: getValue($form, this)}, attributeDefaults, this); watchAttribute($form, attributes[i]); }); $form.data('yiiActiveForm', { settings: settings, attributes: attributes, submitting: false, validated: false, validate_only: false, // validate without auto submitting options: getFormOptions($form) }); /** * Clean up error status when the form is reset. * Note that $form.on('reset', ...) does work because the "reset" event does not bubble on IE. */ $form.on('reset.yiiActiveForm', methods.resetForm); if (settings.validateOnSubmit) { $form.on('mouseup.yiiActiveForm keyup.yiiActiveForm', ':submit', function () { $form.data('yiiActiveForm').submitObject = $(this); }); $form.on('submit.yiiActiveForm', methods.submitForm); } var event = $.Event(events.afterInit); $form.trigger(event); }); }, // add a new attribute to the form dynamically. // please refer to attributeDefaults for the structure of attribute add: function (attribute) { var $form = $(this); attribute = $.extend({value: getValue($form, attribute)}, attributeDefaults, attribute); $form.data('yiiActiveForm').attributes.push(attribute); watchAttribute($form, attribute); }, // remove the attribute with the specified ID from the form remove: function (id) { var $form = $(this), attributes = $form.data('yiiActiveForm').attributes, index = -1, attribute = undefined; $.each(attributes, function (i) { if (attributes[i]['id'] == id) { index = i; attribute = attributes[i]; return false; } }); if (index >= 0) { attributes.splice(index, 1); unwatchAttribute($form, attribute); } return attribute; }, // manually trigger the validation of the attribute with the specified ID validateAttribute: function (id) { var attribute = methods.find.call(this, id); if (attribute != undefined) { validateAttribute($(this), attribute, true); } }, // find an attribute config based on the specified attribute ID find: function (id) { var attributes = $(this).data('yiiActiveForm').attributes, result = undefined; $.each(attributes, function (i) { if (attributes[i]['id'] == id) { result = attributes[i]; return false; } }); return result; }, destroy: function () { return this.each(function () { $(this).off('.yiiActiveForm'); $(this).removeData('yiiActiveForm'); }); }, data: function () { return this.data('yiiActiveForm'); }, // validate all applicable inputs in the form validate: function (forceValidate) { if (forceValidate) { $(this).data('yiiActiveForm').submitting = true; } var $form = $(this), data = $form.data('yiiActiveForm'), needAjaxValidation = false, messages = {}, deferreds = deferredArray(), submitting = data.submitting; if (submitting) { var event = $.Event(events.beforeValidate); $form.trigger(event, [messages, deferreds]); if (event.result === false) { data.submitting = false; submitFinalize($form); return; } } // client-side validation $.each(data.attributes, function () { this.$form = $form; var $input = findInput($form, this); var disabled = $input.toArray().reduce(function(result, next) { return result && $(next).is(':disabled'); }, true); if (disabled) { return true; } // validate markup for select input if ($input.length && $input[0].tagName.toLowerCase() === 'select') { var opts = $input[0].options, isEmpty = !opts || !opts.length, isRequired = $input.attr('required'), isMultiple = $input.attr('multiple'), size = $input.attr('size') || 1; // check if valid HTML markup for select input, else return validation as `true` // https://w3c.github.io/html-reference/select.html if (isRequired && !isMultiple && parseInt(size, 10) === 1) { // invalid select markup condition if (isEmpty) { // empty option elements for the select return true; } if (opts[0] && (opts[0].value !== '' && opts[0].text !== '')) { // first option is not empty return true; } } } this.cancelled = false; // perform validation only if the form is being submitted or if an attribute is pending validation if (data.submitting || this.status === 2 || this.status === 3) { var msg = messages[this.id]; if (msg === undefined) { msg = []; messages[this.id] = msg; } var event = $.Event(events.beforeValidateAttribute); $form.trigger(event, [this, msg, deferreds]); if (event.result !== false) { if (this.validate) { this.validate(this, getValue($form, this), msg, deferreds, $form); } if (this.enableAjaxValidation) { needAjaxValidation = true; } } else { this.cancelled = true; } } }); // ajax validation $.when.apply(this, deferreds).always(function () { // Remove empty message arrays for (var i in messages) { if (0 === messages[i].length) { delete messages[i]; } } if (needAjaxValidation && ($.isEmptyObject(messages) || data.submitting)) { var $button = data.submitObject, extData = '&' + data.settings.ajaxParam + '=' + $form.attr('id'); if ($button && $button.length && $button.attr('name')) { extData += '&' + $button.attr('name') + '=' + $button.attr('value'); } $.ajax({ url: data.settings.validationUrl, type: $form.attr('method'), data: $form.serialize() + extData, dataType: data.settings.ajaxDataType, complete: function (jqXHR, textStatus) { $form.trigger(events.ajaxComplete, [jqXHR, textStatus]); }, beforeSend: function (jqXHR, settings) { $form.trigger(events.ajaxBeforeSend, [jqXHR, settings]); }, success: function (msgs) { if (msgs !== null && typeof msgs === 'object') { $.each(data.attributes, function () { if (!this.enableAjaxValidation || this.cancelled) { delete msgs[this.id]; } }); updateInputs($form, $.extend(messages, msgs), submitting); } else { updateInputs($form, messages, submitting); } }, error: function () { data.submitting = false; submitFinalize($form); } }); } else { if (data.submitting) { // delay callback so that the form can be submitted without problem window.setTimeout(function () { updateInputs($form, messages, submitting); }, 200); } else { updateInputs($form, messages, submitting); } } }); }, submitForm: function () { var $form = $(this), data = $form.data('yiiActiveForm'); if (data.validated) { // Second submit's call (from validate/updateInputs) data.submitting = false; var event = $.Event(events.beforeSubmit); $form.trigger(event); if (event.result === false) { data.validated = false; submitFinalize($form); return false; } updateHiddenButton($form); return true; // continue submitting the form since validation passes } else { // First submit's call (from yii.js/handleAction) - execute validating setSubmitFinalizeDefer($form); if (data.settings.timer !== undefined) { clearTimeout(data.settings.timer); } data.submitting = true; methods.validate.call($form); return false; } }, resetForm: function () { var $form = $(this); var data = $form.data('yiiActiveForm'); // Because we bind directly to a form reset event instead of a reset button (that may not exist), // when this function is executed form input values have not been reset yet. // Therefore we do the actual reset work through setTimeout. window.setTimeout(function () { $.each(data.attributes, function () { // Without setTimeout() we would get the input values that are not reset yet. this.value = getValue($form, this); this.status = 0; var $container = $form.find(this.container), $input = findInput($form, this), $errorElement = data.settings.validationStateOn === 'input' ? $input : $container; $errorElement.removeClass( data.settings.validatingCssClass + ' ' + data.settings.errorCssClass + ' ' + data.settings.successCssClass ); $container.find(this.error).html(''); }); $form.find(data.settings.errorSummary).hide().find('ul').html(''); }, 1); }, /** * Updates error messages, input containers, and optionally summary as well. * If an attribute is missing from messages, it is considered valid. * @param messages array the validation error messages, indexed by attribute IDs * @param summary whether to update summary as well. */ updateMessages: function (messages, summary) { var $form = $(this); var data = $form.data('yiiActiveForm'); $.each(data.attributes, function () { updateInput($form, this, messages); }); if (summary) { updateSummary($form, messages); } }, /** * Updates error messages and input container of a single attribute. * If messages is empty, the attribute is considered valid. * @param id attribute ID * @param messages array with error messages */ updateAttribute: function (id, messages) { var attribute = methods.find.call(this, id); if (attribute != undefined) { var msg = {}; msg[id] = messages; updateInput($(this), attribute, msg); } } }; var watchAttribute = function ($form, attribute) { var $input = findInput($form, attribute); if (attribute.validateOnChange) { $input.on('change.yiiActiveForm', function () { validateAttribute($form, attribute, false); }); } if (attribute.validateOnBlur) { $input.on('blur.yiiActiveForm', function () { if (attribute.status == 0 || attribute.status == 1) { validateAttribute($form, attribute, true); } }); } if (attribute.validateOnType) { $input.on('keyup.yiiActiveForm', function (e) { if ($.inArray(e.which, [16, 17, 18, 37, 38, 39, 40]) !== -1) { return; } if (attribute.value !== getValue($form, attribute)) { validateAttribute($form, attribute, false, attribute.validationDelay); } }); } }; var unwatchAttribute = function ($form, attribute) { findInput($form, attribute).off('.yiiActiveForm'); }; var validateAttribute = function ($form, attribute, forceValidate, validationDelay) { var data = $form.data('yiiActiveForm'); if (forceValidate) { attribute.status = 2; } $.each(data.attributes, function () { if (!isEqual(this.value, getValue($form, this))) { this.status = 2; forceValidate = true; } }); if (!forceValidate) { return; } if (data.settings.timer !== undefined) { clearTimeout(data.settings.timer); } data.settings.timer = window.setTimeout(function () { if (data.submitting || $form.is(':hidden')) { return; } $.each(data.attributes, function () { if (this.status === 2) { this.status = 3; var $container = $form.find(this.container), $input = findInput($form, this); var $errorElement = data.settings.validationStateOn === 'input' ? $input : $container; $errorElement.addClass(data.settings.validatingCssClass); } }); methods.validate.call($form); }, validationDelay ? validationDelay : 200); }; /** * Compares two value whatever it objects, arrays or simple types * @param val1 * @param val2 * @returns boolean */ var isEqual = function (val1, val2) { // objects if (val1 instanceof Object) { return isObjectsEqual(val1, val2) } // arrays if (Array.isArray(val1)) { return isArraysEqual(val1, val2); } // simple types return val1 === val2; }; /** * Compares two objects * @param obj1 * @param obj2 * @returns boolean */ var isObjectsEqual = function (obj1, obj2) { if (!(obj1 instanceof Object) || !(obj2 instanceof Object)) { return false; } var keys1 = Object.keys(obj1); var keys2 = Object.keys(obj2); if (keys1.length !== keys2.length) { return false; } for (var i = 0; i < keys1.length; i += 1) { if (!obj2.hasOwnProperty(keys1[i])) { return false; } if (obj1[keys1[i]] !== obj2[keys1[i]]) { return false; } } return true; }; /** * Compares two arrays * @param arr1 * @param arr2 * @returns boolean */ var isArraysEqual = function (arr1, arr2) { if (!Array.isArray(arr1) || !Array.isArray(arr2)) { return false; } if (arr1.length !== arr2.length) { return false; } for (var i = 0; i < arr1.length; i += 1) { if (arr1[i] !== arr2[i]) { return false; } } return true; }; /** * Returns an array prototype with a shortcut method for adding a new deferred. * The context of the callback will be the deferred object so it can be resolved like ```this.resolve()``` * @returns Array */ var deferredArray = function () { var array = []; array.add = function (callback) { this.push(new $.Deferred(callback)); }; return array; }; var buttonOptions = ['action', 'target', 'method', 'enctype']; /** * Returns current form options * @param $form * @returns object Object with button of form options */ var getFormOptions = function ($form) { var attributes = {}; for (var i = 0; i < buttonOptions.length; i++) { attributes[buttonOptions[i]] = $form.attr(buttonOptions[i]); } return attributes; }; /** * Applies temporary form options related to submit button * @param $form the form jQuery object * @param $button the button jQuery object */ var applyButtonOptions = function ($form, $button) { for (var i = 0; i < buttonOptions.length; i++) { var value = $button.attr('form' + buttonOptions[i]); if (value) { $form.attr(buttonOptions[i], value); } } }; /** * Restores original form options * @param $form the form jQuery object */ var restoreButtonOptions = function ($form) { var data = $form.data('yiiActiveForm'); for (var i = 0; i < buttonOptions.length; i++) { $form.attr(buttonOptions[i], data.options[buttonOptions[i]] || null); } }; /** * Updates the error messages and the input containers for all applicable attributes * @param $form the form jQuery object * @param messages array the validation error messages * @param submitting whether this method is called after validation triggered by form submission */ var updateInputs = function ($form, messages, submitting) { var data = $form.data('yiiActiveForm'); if (data === undefined) { return false; } var errorAttributes = [], $input; $.each(data.attributes, function () { var hasError = (submitting && updateInput($form, this, messages)) || (!submitting && attrHasError($form, this, messages)); $input = findInput($form, this); if (!$input.is(':disabled') && !this.cancelled && hasError) { errorAttributes.push(this); } }); $form.trigger(events.afterValidate, [messages, errorAttributes]); if (submitting) { updateSummary($form, messages); if (errorAttributes.length) { if (data.settings.scrollToError) { var h = $(document).height(), top = $form.find($.map(errorAttributes, function (attribute) { return attribute.input; }).join(',')).first().closest(':visible').offset().top - data.settings.scrollToErrorOffset; top = top < 0 ? 0 : (top > h ? h : top); var wtop = $(window).scrollTop(); if (top < wtop || top > wtop + $(window).height()) { $(window).scrollTop(top); } } data.submitting = false; } else { data.validated = true; if (!data.validate_only) { if (data.submitObject) { applyButtonOptions($form, data.submitObject); } $form.submit(); if (data.submitObject) { restoreButtonOptions($form); } } } } else { $.each(data.attributes, function () { if (!this.cancelled && (this.status === 2 || this.status === 3)) { updateInput($form, this, messages); } }); } submitFinalize($form); }; /** * Updates hidden field that represents clicked submit button. * @param $form the form jQuery object. */ var updateHiddenButton = function ($form) { var data = $form.data('yiiActiveForm'); var $button = data.submitObject || $form.find(':submit:first'); // TODO: if the submission is caused by "change" event, it will not work if ($button.length && $button.attr('type') == 'submit' && $button.attr('name')) { // simulate button input value var $hiddenButton = $('input[type="hidden"][name="' + $button.attr('name') + '"]', $form); if (!$hiddenButton.length) { $('<input>').attr({ type: 'hidden', name: $button.attr('name'), value: $button.attr('value') }).appendTo($form); } else { $hiddenButton.attr('value', $button.attr('value')); } } }; /** * Updates the error message and the input container for a particular attribute. * @param $form the form jQuery object * @param attribute object the configuration for a particular attribute. * @param messages array the validation error messages * @return boolean whether there is a validation error for the specified attribute */ var updateInput = function ($form, attribute, messages) { var data = $form.data('yiiActiveForm'), $input = findInput($form, attribute), hasError = attrHasError($form, attribute, messages); if (!$.isArray(messages[attribute.id])) { messages[attribute.id] = []; } attribute.status = 1; if ($input.length) { var $container = $form.find(attribute.container); var $error = $container.find(attribute.error); updateAriaInvalid($form, attribute, hasError); var $errorElement = data.settings.validationStateOn === 'input' ? $input : $container; if (hasError) { if (attribute.encodeError) { $error.text(messages[attribute.id][0]); } else { $error.html(messages[attribute.id][0]); } $errorElement.removeClass(data.settings.validatingCssClass + ' ' + data.settings.successCssClass) .addClass(data.settings.errorCssClass); } else { $error.empty(); $errorElement.removeClass(data.settings.validatingCssClass + ' ' + data.settings.errorCssClass + ' ') .addClass(data.settings.successCssClass); } attribute.value = getValue($form, attribute); } $form.trigger(events.afterValidateAttribute, [attribute, messages[attribute.id]]); return hasError; }; /** * Checks if a particular attribute has an error * @param $form the form jQuery object * @param attribute object the configuration for a particular attribute. * @param messages array the validation error messages * @return boolean whether there is a validation error for the specified attribute */ var attrHasError = function ($form, attribute, messages) { var $input = findInput($form, attribute), hasError = false; if (!$.isArray(messages[attribute.id])) { messages[attribute.id] = []; } if ($input.length) { hasError = messages[attribute.id].length > 0; } return hasError; }; /** * Updates the error summary. * @param $form the form jQuery object * @param messages array the validation error messages */ var updateSummary = function ($form, messages) { var data = $form.data('yiiActiveForm'), $summary = $form.find(data.settings.errorSummary), $ul = $summary.find('ul').empty(); if ($summary.length && messages) { $.each(data.attributes, function () { if ($.isArray(messages[this.id]) && messages[this.id].length) { var error = $('<li/>'); if (data.settings.encodeErrorSummary) { error.text(messages[this.id][0]); } else { error.html(messages[this.id][0]); } $ul.append(error); } }); $summary.toggle($ul.find('li').length > 0); } }; var getValue = function ($form, attribute) { var $input = findInput($form, attribute); var type = $input.attr('type'); if (type === 'checkbox' || type === 'radio') { var $realInput = $input.filter(':checked'); if ($realInput.length > 1) { var values = []; $realInput.each(function (index) { values.push($($realInput.get(index)).val()); }); return values; } if (!$realInput.length) { $realInput = $form.find('input[type=hidden][name="' + $input.attr('name') + '"]'); } return $realInput.val(); } else { return $input.val(); } }; var findInput = function ($form, attribute) { var $input = $form.find(attribute.input); if ($input.length && $input[0].tagName.toLowerCase() === 'div') { // checkbox list or radio list return $input.find('input'); } else { return $input; } }; var updateAriaInvalid = function ($form, attribute, hasError) { if (attribute.updateAriaInvalid) { $form.find(attribute.input).attr('aria-invalid', hasError ? 'true' : 'false'); } } })(window.jQuery);