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116 lines
3.9 KiB
116 lines
3.9 KiB
;(function() {
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'use strict';
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/**
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* This utils aims to facilitate the manipulation of each instance setting.
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* Using a function instead of an object brings two main advantages: First,
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* it will be easier in the future to catch settings updates through a
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* function than an object. Second, giving it a full object will "merge" it
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* to the settings object properly, keeping us to have to always add a loop.
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*
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* @return {configurable} The "settings" function.
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*/
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var configurable = function() {
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var i,
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l,
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data = {},
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datas = Array.prototype.slice.call(arguments, 0);
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/**
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* The method to use to set or get any property of this instance.
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*
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* @param {string|object} a1 If it is a string and if a2 is undefined,
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* then it will return the corresponding
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* property. If it is a string and if a2 is
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* set, then it will set a2 as the property
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* corresponding to a1, and return this. If
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* it is an object, then each pair string +
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* object(or any other type) will be set as a
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* property.
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* @param {*?} a2 The new property corresponding to a1 if a1
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* is a string.
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* @return {*|configurable} Returns itself or the corresponding
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* property.
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*
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* Polymorphism:
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* *************
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* Here are some basic use examples:
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*
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* > settings = new configurable();
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* > settings('mySetting', 42);
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* > settings('mySetting'); // Logs: 42
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* > settings('mySetting', 123);
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* > settings('mySetting'); // Logs: 123
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* > settings({mySetting: 456});
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* > settings('mySetting'); // Logs: 456
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*
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* Also, it is possible to use the function as a fallback:
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* > settings({mySetting: 'abc'}, 'mySetting'); // Logs: 'abc'
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* > settings({hisSetting: 'abc'}, 'mySetting'); // Logs: 456
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*/
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var settings = function(a1, a2) {
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var o,
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i,
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l,
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k;
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if (arguments.length === 1 && typeof a1 === 'string') {
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if (data[a1] !== undefined)
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return data[a1];
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for (i = 0, l = datas.length; i < l; i++)
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if (datas[i][a1] !== undefined)
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return datas[i][a1];
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return undefined;
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} else if (typeof a1 === 'object' && typeof a2 === 'string') {
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return (a1 || {})[a2] !== undefined ? a1[a2] : settings(a2);
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} else {
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o = (typeof a1 === 'object' && a2 === undefined) ? a1 : {};
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if (typeof a1 === 'string')
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o[a1] = a2;
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for (i = 0, k = Object.keys(o), l = k.length; i < l; i++)
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data[k[i]] = o[k[i]];
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return this;
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}
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};
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/**
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* This method returns a new configurable function, with new objects
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*
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* @param {object*} Any number of objects to search in.
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* @return {function} Returns the function. Check its documentation to know
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* more about how it works.
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*/
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settings.embedObjects = function() {
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var args = datas.concat(
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data
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).concat(
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Array.prototype.splice.call(arguments, 0)
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);
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return configurable.apply({}, args);
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};
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// Initialize
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for (i = 0, l = arguments.length; i < l; i++)
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settings(arguments[i]);
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return settings;
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};
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/**
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* EXPORT:
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* *******
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*/
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if (typeof this.sigma !== 'undefined') {
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this.sigma.classes = this.sigma.classes || {};
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this.sigma.classes.configurable = configurable;
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} else if (typeof exports !== 'undefined') {
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if (typeof module !== 'undefined' && module.exports)
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exports = module.exports = configurable;
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exports.configurable = configurable;
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} else
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this.configurable = configurable;
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}).call(this);
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