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/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
define([
'jquery'
], function ($) {
'use strict';
var licenseRegExp = /<!--[\s\S]*?-->/,
defaultPlugin = 'text',
defaultExt = 'html';
/**
* Checks of provided string contains a file extension.
*
* @param {String} str - String to be checked.
* @returns {Boolean}
*/
function hasFileExtension(str) {
return !!~str.indexOf('.') && !!str.split('.').pop();
}
/**
* Checks if provided string contains a requirejs's plugin reference.
*
* @param {String} str - String to be checked.
* @returns {Boolean}
*/
function hasPlugin(str) {
return !!~str.indexOf('!');
}
/**
* Checks if provided string is a full path to the file.
*
* @param {String} str - String to be checked.
* @returns {Boolean}
*/
function isFullPath(str) {
return !!~str.indexOf('://');
}
/**
* Removes license comment from the provided string.
*
* @param {String} content - String to be processed.
* @returns {String}
*/
function removeLicense(content) {
return content.replace(licenseRegExp, function (match) {
return ~match.indexOf('/**') ? '' : match;
});
}
return {
/**
* Attempts to extract template by provided path from
* a DOM element and falls back to a file loading if
* none of the DOM nodes was found.
*
* @param {String} path - Path to the template or a DOM selector.
* @returns {jQueryPromise}
*/
loadTemplate: function (path) {
var content = this.loadFromNode(path),
defer;
if (content) {
defer = $.Deferred();
defer.resolve(content);
return defer.promise();
}
return this.loadFromFile(path);
},
/**
* Loads template from external file by provided
* path, which will be preliminary formatted.
*
* @param {String} path - Path to the template.
* @returns {jQueryPromise}
*/
loadFromFile: function (path) {
var loading = $.Deferred();
path = this.formatPath(path);
require([path], function (template) {
template = removeLicense(template);
loading.resolve(template);
}, function (err) {
loading.reject(err);
});
return loading.promise();
},
/**
* Attempts to extract content of a node found by provided selector.
*
* @param {String} selector - Node's selector (not necessary valid).
* @returns {String|Boolean} If specified node doesn't exists
* 'false' will be returned, otherwise returns node's content.
*/
loadFromNode: function (selector) {
var node;
try {
node =
document.getElementById(selector) ||
document.querySelector(selector);
return node ? node.innerHTML : false;
} catch (e) {
return false;
}
},
/**
* Adds requirejs's plugin and file extension to
* to the provided string if it's necessary.
*
* @param {String} path - Path to be processed.
* @returns {String} Formatted path.
*/
formatPath: function (path) {
var result = path;
if (!hasPlugin(path)) {
result = defaultPlugin + '!' + result;
}
if (isFullPath(path)) {
return result;
}
if (!hasFileExtension(path)) {
result += '.' + defaultExt;
}
return result.replace(/^([^\/]+)/g, '$1/template');
}
};
});