(function ($, _) {
/**
* @class Attributes
*
* Modifies attributes.
*
* @param {Object|Attributes} attributes
* An object to initialize attributes with.
*/
var Attributes = function (attributes) {
this.data = {};
this.data['class'] = [];
this.merge(attributes);
};
/**
* Renders the attributes object as a string to inject into an HTML element.
*
* @return {String}
* A rendered string suitable for inclusion in HTML markup.
*/
Attributes.prototype.toString = function () {
var output = '';
var name, value;
var checkPlain = function (str) {
return str && str.toString().replace(/&/g, '&').replace(/"/g, '"').replace(//g, '>') || '';
};
var data = this.getData();
for (name in data) {
if (!data.hasOwnProperty(name)) continue;
value = data[name];
if (_.isFunction(value)) value = value();
if (_.isObject(value)) value = _.values(value);
if (_.isArray(value)) value = value.join(' ');
output += ' ' + checkPlain(name) + '="' + checkPlain(value) + '"';
}
return output;
};
/**
* Renders the Attributes object as a plain object.
*
* @return {Object}
* A plain object suitable for inclusion in DOM elements.
*/
Attributes.prototype.toPlainObject = function () {
var object = {};
var name, value;
var data = this.getData();
for (name in data) {
if (!data.hasOwnProperty(name)) continue;
value = data[name];
if (_.isFunction(value)) value = value();
if (_.isObject(value)) value = _.values(value);
if (_.isArray(value)) value = value.join(' ');
object[name] = value;
}
return object;
};
/**
* Add class(es) to the array.
*
* @param {string|Array} value
* An individual class or an array of classes to add.
*
* @return {Attributes}
*
* @chainable
*/
Attributes.prototype.addClass = function (value) {
var args = Array.prototype.slice.call(arguments);
this.data['class'] = this.sanitizeClasses(this.data['class'].concat(args));
return this;
};
/**
* Returns whether the requested attribute exists.
*
* @param {string} name
* An attribute name to check.
*
* @return {boolean}
* TRUE or FALSE
*/
Attributes.prototype.exists = function (name) {
return this.data[name] !== void(0) && this.data[name] !== null;
};
/**
* Retrieve a specific attribute from the array.
*
* @param {string} name
* The specific attribute to retrieve.
* @param {*} defaultValue
* (optional) The default value to set if the attribute does not exist.
*
* @return {*}
* A specific attribute value, passed by reference.
*/
Attributes.prototype.get = function (name, defaultValue) {
if (!this.exists(name)) this.data[name] = defaultValue;
return this.data[name];
};
/**
* Retrieves a cloned copy of the internal attributes data object.
*
* @return {Object}
*/
Attributes.prototype.getData = function () {
return _.extend({}, this.data);
};
/**
* Retrieves classes from the array.
*
* @return {Array}
* The classes array.
*/
Attributes.prototype.getClasses = function () {
return this.get('class', []);
};
/**
* Indicates whether a class is present in the array.
*
* @param {string|Array} className
* The class(es) to search for.
*
* @return {boolean}
* TRUE or FALSE
*/
Attributes.prototype.hasClass = function (className) {
className = this.sanitizeClasses(Array.prototype.slice.call(arguments));
var classes = this.getClasses();
for (var i = 0, l = className.length; i < l; i++) {
// If one of the classes fails, immediately return false.
if (_.indexOf(classes, className[i]) === -1) {
return false;
}
}
return true;
};
/**
* Merges multiple values into the array.
*
* @param {Attributes|Node|jQuery|Object} object
* An Attributes object with existing data, a Node DOM element, a jQuery
* instance or a plain object where the key is the attribute name and the
* value is the attribute value.
* @param {boolean} [recursive]
* Flag determining whether or not to recursively merge key/value pairs.
*
* @return {Attributes}
*
* @chainable
*/
Attributes.prototype.merge = function (object, recursive) {
// Immediately return if there is nothing to merge.
if (!object) {
return this;
}
// Get attributes from a jQuery element.
if (object instanceof $) {
object = object[0];
}
// Get attributes from a DOM element.
if (object instanceof Node) {
object = Array.prototype.slice.call(object.attributes).reduce(function (attributes, attribute) {
attributes[attribute.name] = attribute.value;
return attributes;
}, {});
}
// Get attributes from an Attributes instance.
else if (object instanceof Attributes) {
object = object.getData();
}
// Otherwise, clone the object.
else {
object = _.extend({}, object);
}
// By this point, there should be a valid plain object.
if (!$.isPlainObject(object)) {
setTimeout(function () {
throw new Error('Passed object is not supported: ' + object);
});
return this;
}
// Handle classes separately.
if (object && object['class'] !== void 0) {
this.addClass(object['class']);
delete object['class'];
}
if (recursive === void 0 || recursive) {
this.data = $.extend(true, {}, this.data, object);
}
else {
this.data = $.extend({}, this.data, object);
}
return this;
};
/**
* Removes an attribute from the array.
*
* @param {string} name
* The name of the attribute to remove.
*
* @return {Attributes}
*
* @chainable
*/
Attributes.prototype.remove = function (name) {
if (this.exists(name)) delete this.data[name];
return this;
};
/**
* Removes a class from the attributes array.
*
* @param {...string|Array} className
* An individual class or an array of classes to remove.
*
* @return {Attributes}
*
* @chainable
*/
Attributes.prototype.removeClass = function (className) {
var remove = this.sanitizeClasses(Array.prototype.slice.apply(arguments));
this.data['class'] = _.without(this.getClasses(), remove);
return this;
};
/**
* Replaces a class in the attributes array.
*
* @param {string} oldValue
* The old class to remove.
* @param {string} newValue
* The new class. It will not be added if the old class does not exist.
*
* @return {Attributes}
*
* @chainable
*/
Attributes.prototype.replaceClass = function (oldValue, newValue) {
var classes = this.getClasses();
var i = _.indexOf(this.sanitizeClasses(oldValue), classes);
if (i >= 0) {
classes[i] = newValue;
this.set('class', classes);
}
return this;
};
/**
* Ensures classes are flattened into a single is an array and sanitized.
*
* @param {...String|Array} classes
* The class or classes to sanitize.
*
* @return {Array}
* A sanitized array of classes.
*/
Attributes.prototype.sanitizeClasses = function (classes) {
return _.chain(Array.prototype.slice.call(arguments))
// Flatten in case there's a mix of strings and arrays.
.flatten()
// Split classes that may have been added with a space as a separator.
.map(function (string) {
return string.split(' ');
})
// Flatten again since it was just split into arrays.
.flatten()
// Filter out empty items.
.filter()
// Clean the class to ensure it's a valid class name.
.map(function (value) {
return Attributes.cleanClass(value);
})
// Ensure classes are unique.
.uniq()
// Retrieve the final value.
.value();
};
/**
* Sets an attribute on the array.
*
* @param {string} name
* The name of the attribute to set.
* @param {*} value
* The value of the attribute to set.
*
* @return {Attributes}
*
* @chainable
*/
Attributes.prototype.set = function (name, value) {
var obj = $.isPlainObject(name) ? name : {};
if (typeof name === 'string') {
obj[name] = value;
}
return this.merge(obj);
};
/**
* Prepares a string for use as a CSS identifier (element, class, or ID name).
*
* Note: this is essentially a direct copy from
* \Drupal\Component\Utility\Html::cleanCssIdentifier
*
* @param {string} identifier
* The identifier to clean.
* @param {Object} [filter]
* An object of string replacements to use on the identifier.
*
* @return {string}
* The cleaned identifier.
*/
Attributes.cleanClass = function (identifier, filter) {
filter = filter || {
' ': '-',
'_': '-',
'/': '-',
'[': '-',
']': ''
};
identifier = identifier.toLowerCase();
if (filter['__'] === void 0) {
identifier = identifier.replace('__', '#DOUBLE_UNDERSCORE#');
}
identifier = identifier.replace(Object.keys(filter), Object.keys(filter).map(function(key) { return filter[key]; }));
if (filter['__'] === void 0) {
identifier = identifier.replace('#DOUBLE_UNDERSCORE#', '__');
}
identifier = identifier.replace(/[^\u002D\u0030-\u0039\u0041-\u005A\u005F\u0061-\u007A\u00A1-\uFFFF]/g, '');
identifier = identifier.replace(['/^[0-9]/', '/^(-[0-9])|^(--)/'], ['_', '__']);
return identifier;
};
/**
* Creates an Attributes instance.
*
* @param {object|Attributes} [attributes]
* An object to initialize attributes with.
*
* @return {Attributes}
* An Attributes instance.
*
* @constructor
*/
Attributes.create = function (attributes) {
return new Attributes(attributes);
};
window.Attributes = Attributes;
})(window.jQuery, window._);
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