marbles/es5/marbles/accessors.js

Front-end framework for routing, http, and data handling

'use strict';

Object.defineProperty(exports, '__esModule', {
	value: true
});
/* @flow weak */
var KEYPATH_SEP = '.';
var displayName = 'Marbles.Accessors';

function parseKeypath(keypath, options) {
	options = options || {};
	var keys;
	if (!options.hasOwnProperty('keypath') || options.keypath === true) {
		keys = keypath.split(KEYPATH_SEP);
	} else {
		keys = [keypath];
	}
	return keys;
}

/**
 * @deprecated
 * @memberof Marbles
 * @mixin
 */
var Accessors = {
	set: function set(keypath, value, options) {
		var keys = parseKeypath(keypath, options);
		var lastKey = keys.pop();
		var ref = this;
		var k, i, _len;
		for (i = 0, _len = keys.length; i < _len; i++) {
			k = keys[i];
			ref[k] = ref[k] || {};
			ref = ref[k];
		}

		var oldValue = ref[lastKey];
		ref[lastKey] = value;
		if ((options || {}).silent !== true && value !== oldValue && typeof this.trigger === 'function') {
			this.trigger('change', value, oldValue, keypath, options);
			this.trigger('change:' + keypath, value, oldValue, keypath, options);
		}
	},

	get: function get(keypath, options) {
		var keys = parseKeypath(keypath, options);
		var lastKey = keys.pop();
		var ref = this;
		var k, i, _len;
		for (i = 0, _len = keys.length; i < _len; i++) {
			if (!ref) {
				break;
			}
			k = keys[i];
			ref = ref[k];
		}

		if (!ref || !ref.hasOwnProperty(lastKey)) {
			return;
		}

		return ref[lastKey];
	},

	remove: function remove(keypath, options) {
		if (!this.hasKey(keypath, options)) {
			return;
		}
		var keys = parseKeypath(keypath, options);
		var lastKey = keys.pop();

		var ref = this;
		if (keys.length) {
			ref = this.get(keys.join(KEYPATH_SEP));
		}

		if (!ref) {
			throw new Error(displayName + '(' + this.constructor.displayName + '): Can\'t remove property ' + JSON.stringify(lastKey) + ' from undefined keypath: ' + keys.join(KEYPATH_SEP));
		}

		var oldValue = ref[lastKey];
		if (ref.hasOwnProperty(lastKey)) {
			delete ref[lastKey];
		}

		if ((options || {}).silent !== true && oldValue !== undefined && typeof this.trigger === 'function') {
			this.trigger('change', undefined, oldValue, keypath, options);
			this.trigger('change:' + keypath, undefined, oldValue, keypath, options);
		}
	},

	hasKey: function hasKey(keypath, options) {
		var keys = parseKeypath(keypath, options);
		var lastKey = keys.pop();
		var ref = this.get(keys.join(KEYPATH_SEP));
		if (!ref || !ref.hasOwnProperty(lastKey)) {
			return false;
		}
		return true;
	}
};

exports['default'] = Accessors;
module.exports = exports['default'];