123 lines
5.4 KiB
JavaScript
123 lines
5.4 KiB
JavaScript
/**
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* Mixin class for creation of things like courses and libraries.
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*/
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define(['jquery', 'underscore', 'gettext', 'common/js/components/utils/view_utils'],
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function($, _, gettext, ViewUtils) {
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return function(selectors, classes, keyLengthViolationMessage, keyFieldSelectors, nonEmptyCheckFieldSelectors) {
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var self = this;
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this.selectors = selectors;
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this.classes = classes;
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this.validateRequiredField = ViewUtils.validateRequiredField;
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this.validateURLItemEncoding = ViewUtils.validateURLItemEncoding;
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this.keyLengthViolationMessage = keyLengthViolationMessage;
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// Key fields for your model, like [selectors.org, selectors.number]
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this.keyFieldSelectors = keyFieldSelectors;
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// Fields that must not be empty on your model.
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this.nonEmptyCheckFieldSelectors = nonEmptyCheckFieldSelectors;
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this.create = function(courseInfo, errorHandler) {
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// Replace this with a function that will make a request to create the object.
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};
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// Ensure that key fields passes checkTotalKeyLengthViolations check
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this.validateTotalKeyLength = function() {
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ViewUtils.checkTotalKeyLengthViolations(
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self.selectors, self.classes,
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self.keyFieldSelectors,
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self.keyLengthViolationMessage
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);
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};
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this.toggleSaveButton = function(is_enabled) {
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var is_disabled = !is_enabled;
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$(self.selectors.save).toggleClass(self.classes.disabled, is_disabled).attr('aria-disabled', is_disabled);
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};
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this.setFieldInErr = function(element, message) {
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if (message) {
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element.addClass(self.classes.error);
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element.children(self.selectors.tipError).addClass(self.classes.showing).removeClass(self.classes.hiding).text(message);
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self.toggleSaveButton(false);
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} else {
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element.removeClass(self.classes.error);
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element.children(self.selectors.tipError).addClass(self.classes.hiding).removeClass(self.classes.showing);
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// One "error" div is always present, but hidden or shown
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if ($(self.selectors.error).length === 1) {
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self.toggleSaveButton(true);
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}
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}
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};
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// One final check for empty values
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this.hasInvalidRequiredFields = function() {
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return _.reduce(
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self.nonEmptyCheckFieldSelectors,
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function(acc, element) {
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var $element = $(element);
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var error = self.validateRequiredField($element.val());
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self.setFieldInErr($element.parent(), error);
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return error ? true : acc;
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},
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false
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);
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};
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// Ensure that all fields are not empty
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this.validateFilledFields = function() {
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return _.reduce(
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self.nonEmptyCheckFieldSelectors,
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function(acc, element) {
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var $element = $(element);
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return $element.val().length !== 0 ? acc : false;
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},
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true
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);
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};
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// Handle validation asynchronously
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this.configureHandlers = function() {
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_.each(
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self.keyFieldSelectors,
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function(element) {
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var $element = $(element);
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$element.on('keyup', function(event) {
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// Don't bother showing "required field" error when
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// the user tabs into a new field; this is distracting
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// and unnecessary
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if (event.keyCode === $.ui.keyCode.TAB) {
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return;
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}
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var error = self.validateURLItemEncoding($element.val(), $(self.selectors.allowUnicode).val() === 'True');
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self.setFieldInErr($element.parent(), error);
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self.validateTotalKeyLength();
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if (!self.validateFilledFields()) {
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self.toggleSaveButton(false);
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}
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});
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}
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);
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var $name = $(self.selectors.name);
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$name.on('keyup', function() {
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var error = self.validateRequiredField($name.val());
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self.setFieldInErr($name.parent(), error);
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self.validateTotalKeyLength();
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if (!self.validateFilledFields()) {
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self.toggleSaveButton(false);
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}
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});
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};
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return {
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validateTotalKeyLength: self.validateTotalKeyLength,
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setFieldInErr: self.setFieldInErr,
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hasInvalidRequiredFields: self.hasInvalidRequiredFields,
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create: self.create,
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validateFilledFields: self.validateFilledFields,
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configureHandlers: self.configureHandlers
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};
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};
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}
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);
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