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66 lines
2.0 KiB
JavaScript
66 lines
2.0 KiB
JavaScript
/**
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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*/
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var EventEmitter = require('events').EventEmitter;
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var INSTANCE = new EventEmitter();
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var EVENTS_RECEIVER;
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module.exports = INSTANCE;
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/**
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* Sets up current instance to forward emitted events to another EventEmitter
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* instance.
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*
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* @param {EventEmitter} [eventEmitter] The emitter instance to forward
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* events to. Falsy value, when passed, disables forwarding.
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*/
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module.exports.forwardEventsTo = function (eventEmitter) {
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// If no argument is specified disable events forwarding
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if (!eventEmitter) {
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EVENTS_RECEIVER = undefined;
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return;
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}
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if (!(eventEmitter instanceof EventEmitter))
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throw new Error('Cordova events could be redirected to another EventEmitter instance only');
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EVENTS_RECEIVER = eventEmitter;
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};
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var emit = INSTANCE.emit;
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/**
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* This method replaces original 'emit' method to allow events forwarding.
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*
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* @return {eventEmitter} Current instance to allow calls chaining, as
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* original 'emit' does
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*/
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module.exports.emit = function () {
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var args = Array.prototype.slice.call(arguments);
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if (EVENTS_RECEIVER) {
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EVENTS_RECEIVER.emit.apply(EVENTS_RECEIVER, args);
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}
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return emit.apply(this, args);
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};
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