framework/lib/plugins/event.js

/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
*/

var _event = require("../../lib/event"),
    ONCE_EVENT_ERROR = "Error occurred while adding once event listener.",
    ERROR_ID = -1;

module.exports = {
    once: function (request, success, fail, args, env) {
        try {
            var eventName = decodeURIComponent(args.eventName).replace(/\"/g, ""),
                action = {
                    once: true,
                    event: eventName
                };

            _event.add(action, env.webview);

            if (success) {
                success();
            }
        }
        catch (e) {
            if (fail) {
                fail(ERROR_ID, ONCE_EVENT_ERROR);
            }
        }
    }
};