117 lines
3.0 KiB
JavaScript
117 lines
3.0 KiB
JavaScript
/*
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This file is part of ethereum.js.
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ethereum.js is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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ethereum.js is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with ethereum.js. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file property.js
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* @author Fabian Vogelsteller <[email protected]>
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* @author Marek Kotewicz <[email protected]>
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* @date 2015
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*/
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var RequestManager = require('./requestmanager');
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var Property = function (options) {
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this.name = options.name;
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this.getter = options.getter;
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this.setter = options.setter;
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this.outputFormatter = options.outputFormatter;
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this.inputFormatter = options.inputFormatter;
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};
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/**
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* Should be called to format input args of method
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*
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* @method formatInput
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* @param {Array}
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* @return {Array}
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*/
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Property.prototype.formatInput = function (arg) {
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return this.inputFormatter ? this.inputFormatter(arg) : arg;
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};
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/**
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* Should be called to format output(result) of method
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*
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* @method formatOutput
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* @param {Object}
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* @return {Object}
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*/
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Property.prototype.formatOutput = function (result) {
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return this.outputFormatter && result !== null ? this.outputFormatter(result) : result;
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};
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/**
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* Should attach function to method
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*
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* @method attachToObject
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* @param {Object}
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* @param {Function}
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*/
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Property.prototype.attachToObject = function (obj) {
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var proto = {
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get: this.get.bind(this),
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};
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var names = this.name.split('.');
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var name = names[0];
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if (names.length > 1) {
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obj[names[0]] = obj[names[0]] || {};
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obj = obj[names[0]];
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name = names[1];
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}
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Object.defineProperty(obj, name, proto);
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var toAsyncName = function (prefix, name) {
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return prefix + name.charAt(0).toUpperCase() + name.slice(1);
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};
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obj[toAsyncName('get', name)] = this.getAsync.bind(this);
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};
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/**
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* Should be used to get value of the property
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*
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* @method get
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* @return {Object} value of the property
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*/
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Property.prototype.get = function () {
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return this.formatOutput(RequestManager.getInstance().send({
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method: this.getter
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}));
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};
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/**
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* Should be used to asynchrounously get value of property
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*
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* @method getAsync
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* @param {Function}
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*/
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Property.prototype.getAsync = function (callback) {
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var self = this;
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RequestManager.getInstance().sendAsync({
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method: this.getter
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}, function (err, result) {
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if (err) {
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return callback(err);
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}
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callback(err, self.formatOutput(result));
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});
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};
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module.exports = Property;
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