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    blacklist-api.js blacklist-ui.js

  • blacklist-api.js

  • ¶ 
    ;
(function (G, _) {
  • ¶

    BlackList Model

    I'd prefer to use Backbone.LocalStorage with Backbone.Model, but for some reason the method `Backbone.Sync is not working in Grooveshark page :S. Futhermore, it's simpler than use a collection.

        var BlackList = function () {
        this.blackList = localStorage.blackList && JSON.parse(localStorage.blackList);
        this.blackList = this.blackList ||  [];
    };

    var blackListMethods = {
        get: function () {
            return this.blackList;
        },
        add: function (song) {
            if (!this.contains(song)) {
                this.blackList.push(song.songID);
            }
            this.sync();
        },
        remove: function (song) {
            if (this.contains(song)) {
                this.blackList = _.without(this.blackList, song.songID);
            }
            this.sync();
        },
        contains: function (song) {
            return this.blackList.indexOf(song.songID) !== -1;
        },
        sync: function () {
            localStorage.blackList = JSON.stringify(this.blackList);
        }
    };
  • ¶

    A more elegant way to add these methods to the prototype

        _.extend(BlackList.prototype, blackListMethods);
  • ¶

    BlackList Daemon

    This class is used to apply the blacklist logic.

        var BlackListDaemon = function () {
        this.blackList = new BlackList();
        G.setSongStatusCallback(_.bind(this.filterBlackList, this));
    };

    var blackListDaemonMethods = {
  • ¶

    This function is used to verify if the current song is inside of the black list or not.

            filterBlackList: function (currentSong) {
            var song = currentSong.song,
                status = currentSong.status;
  • ¶

    Verify if is inside of the black list

                if (song && status === "loading" && this.blackList.contains(song)) {
  • ¶

    Remove of the execution inmediately!

                    G.removeCurrentSongFromQueue();
            }
        }
    };

    _.extend(BlackListDaemon.prototype, blackListDaemonMethods);


    var BlackListDaemon = new BlackListDaemon();
  • ¶

    External methods for Blacklist Grooveshark

        var externalPublicApi = {
  • ¶
    • Add a song in the black list
            addSongInBlackListFromSongID: function (songID) {
            this.blackList.add({
                "songID": songID
            });
        },
  • ¶
    • What songs did I ignore?
            getSongsInBlackList: function () {
            return this.blackList.get();
        },
  • ¶
    • Remove a song to the black list
            removeSongInBlackListFromSongID: function (songID) {
            this.blackList.remove({
                "songID": songID
            });
        }
    };
  • ¶

    add these elements to Grooveshark API

        _.each(externalPublicApi, function (func, funcName) {
        externalPublicApi[funcName] = _.bind(func, BlackListDaemon);
    });
    _.extend(Grooveshark, externalPublicApi);
})(Grooveshark, _);