All files / dash.js/src/streaming/controllers BlacklistController.js

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/**
 * The copyright in this software is being made available under the BSD License,
 * included below. This software may be subject to other third party and contributor
 * rights, including patent rights, and no such rights are granted under this license.
 *
 * Copyright (c) 2013, Dash Industry Forum.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *  * Redistributions of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright notice,
 *  this list of conditions and the following disclaimer in the documentation and/or
 *  other materials provided with the distribution.
 *  * Neither the name of Dash Industry Forum nor the names of its
 *  contributors may be used to endorse or promote products derived from this software
 *  without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
 *  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 *  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 *  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 */
 
import FactoryMaker from '../../core/FactoryMaker.js';
import EventBus from '../../core/EventBus.js';
 
function BlackListController(config) {
 
    config = config || {};
    let instance;
    let blacklist = [];
 
    const eventBus = EventBus(this.context).getInstance();
    const updateEventName = config.updateEventName;
    const addBlacklistEventName = config.addBlacklistEventName;
 
    function contains(query) {
        if (!blacklist.length || !query || !query.length) {
            return false;
        }
 
        return (blacklist.indexOf(query) !== -1);
    }
 
    function add(entry) {
        if (blacklist.indexOf(entry) !== -1) {
            return;
        }
 
        blacklist.push(entry);
 
        eventBus.trigger(updateEventName, { entry: entry });
    }
 
    function remove(entry) {
        const index = blacklist.indexOf(entry);
        if (index !== -1) {
            blacklist.splice(index, 1)
        }
    }
 
    function onAddBlackList(e) {
        add(e.entry);
    }
 
    function setup() {
        if (addBlacklistEventName) {
            eventBus.on(addBlacklistEventName, onAddBlackList, instance);
        }
    }
 
    function reset() {
        if (addBlacklistEventName) {
            eventBus.off(addBlacklistEventName, onAddBlackList, instance);
        }
        blacklist = [];
    }
 
    instance = {
        add: add,
        remove: remove,
        contains: contains,
        reset: reset
    };
 
    setup();
    return instance;
}
 
BlackListController.__dashjs_factory_name = 'BlackListController';
export default FactoryMaker.getClassFactory(BlackListController);