Add copy-button to http://lol.item-set.com/#!/editor

copy-lol-item-set.user.js

// ==UserScript==
// @name         Copy LOL item-set
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Adds a button for copying the item set.
// @author       You
// @match        http://lol.item-set.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function deepFilter(x) {
        if (_.isArray(x)) {
            return _.map(x,deepFilter);
        } else if (_.isObject(x)) {
            return _.chain(x).omit((i,y)=>y.startsWith("$")).mapObject(deepFilter).value();
        } else {
            return x;
        }
    }

    function copyItemSet() {
        var scope = angular.element($("body>.ng-scope")).scope();

        var is = scope.set;

        var hero_name = scope.set.champion;
        var hero = +scope.champions[hero_name].key;

        var outObject = {
            title: is.title,
            associatedMaps: [11],
            associatedChampions: [hero],
            blocks: is.blocks
        };

        var result = JSON.stringify(deepFilter(outObject));

        if (copyText(result)) {
            console.log("Suuccessfully copied");
        } else {
            console.log("Failed to copy:", result);
        }
    }

    function copyText(str) {
        var ta = document.createElement("textarea");
        ta.innerText = str;
        document.body.append(ta);
        ta.select();
        var ans = document.execCommand("copy");
        document.body.removeChild(ta);
        return ans;
    }

    function insertButton() {
        var download_button = $("set-downloader");

        if (download_button.length===0) {
            return setTimeout(insertButton,100);
        }

        var br = $("<br>").insertAfter(download_button);
        var div = $('<div class="btn btn-success btn-block"><i class="fa fa-copy"></i>&nbsp;Copy</div>').insertAfter(br);

        div.click(copyItemSet);
    }

    $( document ).ready(insertButton);


})();