// ==UserScript==
// @name         HTML5 Video Player Enhance
// @version      2.9.0a6
// @description  To enhance the functionality of HTML5 Video Player (h5player) supporting all websites using shortcut keys similar to PotPlayer.
// @author       CY Fung
// @match        http://*/*
// @match        https://*/*
// @run-at       document-start
// @require https://cdnjs.cloudflare.com/ajax/libs/js-sha256/0.9.0/sha256.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/mathjs/9.3.2/math.js
// @namespace https://greasyfork.org/users/371179
// @grant   GM_getValue
// @grant   GM_setValue
// @downloadURL none
// ==/UserScript==


/**
 * Remarks
 * This script support modern browser only with ES6+.
 * fullscreen and pointerLock   buggy in shadowRoot
 * Space Pause not success
 * shift F key issue
 **/
 (function $$($hs) {
    'use strict';

    if (!document || !document.documentElement) return window.requestAnimationFrame($$);

    let _debug_h5p_logging_ = false;

    try {
        _debug_h5p_logging_ = +window.localStorage.getItem('_h5_player_sLogging_') > 0
    } catch (e) {}

    const SHIFT = 1;
    const CTRL = 2;
    const ALT = 4;
    const TERMINATE = 0x842;
    const _sVersion_ = 1817;
    const str_postMsgData = '__postMsgData__'

    const _ell_timeupdatefs = [];
    let _endlessloop = null;
    const isIframe = (window.top !== window.self && window.top && window.self);
    window.__MutationObserver = window.MutationObserver || window.WebKitMutationObserver || null;
    const shadowRoots = [];

    const getRoot = (elm) => elm.getRootNode instanceof Function ? elm.getRootNode() : (elm.ownerDocument || null);

    const isShadowRoot = (elm) => (elm && ('host' in elm)) ? elm.nodeType == 11 && !!elm.host && elm.host.nodeType == 1 : null; //instanceof ShadowRoot


    if (!Element.prototype.matches) {
        Element.prototype.matches =
            Element.prototype.matchesSelector || Element.prototype.mozMatchesSelector ||
            Element.prototype.msMatchesSelector || Element.prototype.oMatchesSelector || Element.prototype.webkitMatchesSelector ||
            Element.prototype.matches(); // throw Error if not supported
    }

    Element.prototype.__requestPointerLock = Element.prototype.requestPointerLock ||
        Element.prototype.mozRequestPointerLock || Element.prototype.webkitRequestPointerLock || function() {};

    // Ask the browser to release the pointer
    Document.prototype.__exitPointerLock = Document.prototype.exitPointerLock ||
        Document.prototype.mozExitPointerLock || Document.prototype.webkitExitPointerLock || function() {};

    //  built-in hash - https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest
    async function digestMessage(message) {
        return window.sha256(message)
    }

    var $ws = {
        requestAnimationFrame,
        cancelAnimationFrame
    }
    //throw Error if your browser is too outdated. (eg ES6 script, no such window object)



    const dround = (x) => ~~(x + .5);

    const jsonStringify_replacer = function(key, val) {
        if (val && (val instanceof Element || val instanceof Document)) return val.toString();
        return val; // return as is
    };

    const jsonParse = function() {
        try {
            return JSON.parse.apply(this, arguments)
        } catch (e) {}
        return null;
    }
    const jsonStringify = function(obj) {
        try {
            return JSON.stringify.call(this, obj, jsonStringify_replacer)
        } catch (e) {}
        return null;
    }

    function _postMsg() {
        //async is needed. or error handling for postMessage
        const [win, tag, ...data] = arguments;
        if (typeof tag == 'string') {
            let postMsgObj = {
                tag,
                passing: true,
                winOrder: _postMsg.a
            }
            try {
                var k = 'msg-' + (+new Date)
                win.document[str_postMsgData] = win.document[str_postMsgData] || {}
                win.document[str_postMsgData][k] = data; //direct
                postMsgObj.str = k;
                postMsgObj.stype = 1;
            } catch (e) {}
            if (!postMsgObj.stype) {
                postMsgObj.str = jsonStringify({
                    d: data
                })
                if (postMsgObj.str && postMsgObj.str.length) postMsgObj.stype = 2;
            }
            if (!postMsgObj.stype) {
                postMsgObj.str = "" + data;
                postMsgObj.stype = 0;
            }
            win.postMessage(postMsgObj, '*');
        }

    }

    function postMsg() {
        let win = window;
        var a = 0;
        while (win = win.parent) {
            _postMsg.a = ++a;
            _postMsg(win, ...arguments)
            if (win == top) break;
        }
    }



    function lowerKeyCode(keyCode) {
        if (keyCode >= 65 && keyCode <= 90) keyCode += 32;
        return keyCode
    }

    function whichTransitionEvent(type) {
        if (whichTransitionEvent['_result_' + type]) return whichTransitionEvent['_result_' + type]
        var el = document.createElement("fakeelement");

        const capital = (x) => x[0].toUpperCase() + x.substr(1);
        const capitalType = capital(type);

        const transitions = {
            [type]: `${type}end`,
            [`O${capitalType}`]: `o${capitalType}End`,
            [`Moz${capitalType}`]: `${type}end`,
            [`Webkit${capitalType}`]: `webkit${capitalType}End`,
            [`MS${capitalType}`]: `MS${capitalType}End`
        }

        for (let styleProp in transitions) {
            if (el.style[styleProp] !== undefined) {
                return (whichTransitionEvent['_result_' + type] = transitions[styleProp]);
            }
        }
    }

    class ResizeODM {
        static __init__() {
            this.__resizerCount__ = 0;
            this.__resizeListeners__ = {};
        }
        constructor() {
            let rm = this;
            ResizeODM.__resizerCount__++;
            let rpid = "rpid-" + ResizeODM.__resizerCount__;
            ResizeODM.__resizeListeners__[rpid] = [];

            rm._resizer_listeners = ResizeODM.__resizeListeners__[rpid];

            var odm = document.createElement('object');
            odm.setAttribute('_resizer_odm_', rpid);
            odm.setAttribute('style', 'display: block; position: absolute; top: -300vh; left: -300vw; height: 100%; width: 100%; overflow: hidden; pointer-events: none; z-index: -1;');
            odm.onload = ResizeODM.objectLoad;
            odm.type = 'text/html';
            odm.data = 'about:blank';
            rm.odm = odm;
            rm.rpid = rpid;
            rm.odm.__rm__ = rm;
        }

        static find(rsElm) {
            if (!rsElm) return null;
            let odm = [...rsElm.querySelectorAll('object[_resizer_odm_]')].filter(elm => elm.parentNode == rsElm)[0];
            if (!odm) return null;

            return odm.__rm__ || null;

        }

        static resizeListener(e) {
            let odv = e.target || e.srcElement;
            let rm = odv._resizer_rm;
            if (rm.__resizeRAF__) $ws.cancelAnimationFrame(rm.__resizeRAF__);
            rm.__resizeRAF__ = $ws.requestAnimationFrame(function() {
                rm.__resizeRAF__ = 0;
                for (const fn of rm._resizer_listeners) fn.call(rm, e);
            });
        }

        static objectLoad(e) {
            let odm = this;
            let rm = odm.__rm__;
            let odv = odm.contentDocument.defaultView
            odv._resizer_rm = rm;
            rm.odv = odv;
            odv.onresize = ResizeODM.resizeListener;
        }

        resizeElement() {
            return this.odm.parentNode;
        }

        // ResizeODM.relativeParent(rsElm);

        relativeParent(rsElm, existingnode = null) {
            let odm = this.odm;
            rsElm = rsElm || odm.parentNode;
            let rpid = this.rpid;
            //if (getComputedStyle(rsElm).position == 'static') rsElm.style.position = 'relative';
            rsElm.insertBefore(odm, existingnode);
        }

        listen(fn) {
            this._resizer_listeners.push(fn);
        }

        unlisten(fn) {
            this._resizer_listeners.splice(this._resizer_listeners.indexOf(fn), 1);
        }

        remove() {
            this._resizer_listeners.length = 0;
            this.odv.onresize = null;
            this.odm.onload = null;
        }

    }

    function isInOperation(elm) {
        let elmInFocus = elm || document.activeElement;
        if (!elmInFocus) return false;
        let res1 = elmInFocus.matches(
            'a[href],link[href],button,input:not([type="hidden"]),select,textarea,iframe,frame,menuitem,[draggable],[contenteditable]'
        );
        return res1;
    }

    class SimEvent extends Event {
        constructor(typeArg, eventInit, customType) {
            super(typeArg, eventInit);
            this.__customType = customType;
        }
        get type() {
            return this.__customType;
        }
    }

    const _evtOB_create = function(_EVT, d) {
        let keys = Object.keys(_EVT.prototype);
        let res = function Event(m) {
            let o = this
            for (const k of keys) {
                if (k in m && !(k in o)) o[k] = m[k];
            }
            Object.assign(o, d);
        }
        return res
    }
    _evtOB_create._timeupdate = function() {
        if (_evtOB_create.__timeupdate) return _evtOB_create.__timeupdate;
        let res = _evtOB_create(Event, {
            isTrusted: true,
            type: 'timeupdate'
        })
        return _evtOB_create.__timeupdate = res;
    }
    const sim_arg_1_fn = function(f, evtOB) {
        return function(e) {
            let o = new evtOB(e);
            let arg = [...arguments];
            arg[0] = o;
            return f.apply(this, arg);
        }
    }

    const fn_toString = (f, n = 50) => {
        let s = (f + "");
        if (s.length > 2 * n + 5) {
            s = s.substr(0, n) + ' ... ' + s.substr(-n);
        }
        return s
    };

    class EndlessLoop {
        constructor() {
            this.activeLoopsCount = 0;
            this.loops = [];
            this.cid = 0;
            this._loop = () => {
                if (!this.cid) return; //cancelled
                for (const loop of this.loops) {
                    if (loop.opt.looping) loop.fn(loop.opt);
                }
                this.cid = $ws.requestAnimationFrame(this._loop);
            }
        }

        loopStart() {
            this.looping = true;
            this.cid = $ws.requestAnimationFrame(this._loop);
        }
        loopStop() {
            if (this.cid) $ws.cancelAnimationFrame(this.cid);
            this.cid = 0;
            this.looping = false;
        }
        append(fn) {
            const opt = new EndlessLoopOpts(this);
            this.loops.push({
                fn,
                opt
            });
            return opt;
        }
    }

    class EndlessLoopOpts {
        constructor(ell) {
            this._looping = false;
            this._ell = ell;
        }
        _loop() {
            this._ell.loops.some(loop => loop.opt === this && loop.opt.looping ? (loop.fn(loop.opt), true) : null);
        }
        get looping() {
            return this._looping;
        }
        loopingStart() {
            if (this._looping === false) {
                this._looping = true;
                this._ell.activeLoopsCount++;
                if (this._ell.activeLoopsCount == 1) this._ell.loopStart();
            }
        }
        loopingStop() {
            if (this._looping === true) {
                this._looping = false;
                this._ell.activeLoopsCount--;
                if (this._ell.activeLoopsCount == 0) this._ell.loopStop();
            }
        }
    }

    function consoleLog() {
        if (!_debug_h5p_logging_) return;
        if (isIframe) postMsg('consoleLog', ...arguments);
        else console.log.apply(console, arguments);
    }

    function consoleLogF() {
        if (isIframe) postMsg('consoleLog', ...arguments);
        else console.log.apply(console, arguments);
    }

    const Store = {
        prefix: '_h5_player',
        save: function(k, v) {
            if (!Store.available()) return false;
            if (typeof v != 'string') return false;
            Store.LS.setItem(Store.prefix + k, v)
            let sk = fn_toString(k + "", 30);
            let sv = fn_toString(v + "", 30);
            consoleLog(`localStorage Saved "${sk}" = "${sv}"`)
            return true;

        },
        read: function(k) {
            if (!Store.available()) return false;
            let v = Store.LS.getItem(Store.prefix + k)
            let sk = fn_toString(k + "", 30);
            let sv = fn_toString(v + "", 30);
            consoleLog(`localStorage Read "${sk}" = "${sv}"`);
            return v;

        },
        remove: function(k) {

            if (!Store.available()) return false;
            Store.LS.removeItem(Store.prefix + k)
            let sk = fn_toString(k + "", 30);
            consoleLog(`localStorage Removed "${sk}"`)
            return true;
        },
        clearInvalid: function(sVersion) {
            if (!Store.available()) return false;

            //let sVersion=1814;
            if (+Store.read('_sVersion_') < sVersion) {
                Object.keys(localStorage)
                    .filter(s => s.indexOf(Store.prefix) === 0)
                    .forEach(key => window.localStorage.removeItem(key))
                Store.save('_sVersion_', sVersion + '')
                return 2;
            }
            return 1;

        },
        available: function() {
            if (Store.LS) return true;
            if (!window) return false;
            const localStorage = window.localStorage;
            if (!localStorage) return false;
            if (typeof localStorage != 'object') return false;
            if (!('getItem' in localStorage)) return false;
            if (!('setItem' in localStorage)) return false;
            Store.LS = localStorage;
            return true;

        }

    }

    const domTool = {
        nopx: (x) => +x.replace('px', ''),
        cssWH: function(m, r) {
            if (!r) r = getComputedStyle(m, null);
            let c = (x) => +x.replace('px', '');
            return {
                w: m.offsetWidth || c(r.width),
                h: m.offsetHeight || c(r.height)
            }
        },
        _isActionBox_1: function(vEl, pEl) {

            let vElCSS = domTool.cssWH(vEl);
            let vElCSSw = vElCSS.w;
            let vElCSSh = vElCSS.h;

            let vElx = vEl;
            let res = [];
            let mLevel = 0;
            if (vEl && pEl && vEl != pEl && pEl.contains(vEl)) {
                while (vElx && vElx != pEl) {
                    vElx = vElx.parentNode;
                    let vElx_css = null;
                    if (isShadowRoot(vElx)) {} else {
                        vElx_css = getComputedStyle(vElx, null);
                        let vElx_wp = domTool.nopx(vElx_css.paddingLeft) + domTool.nopx(vElx_css.paddingRight)
                        vElCSSw += vElx_wp
                        let vElx_hp = domTool.nopx(vElx_css.paddingTop) + domTool.nopx(vElx_css.paddingBottom)
                        vElCSSh += vElx_hp
                    }
                    res.push({
                        level: ++mLevel,
                        padW: vElCSSw,
                        padH: vElCSSh,
                        elm: vElx,
                        css: vElx_css
                    })

                }
            }

            // in the array, each item is the parent of video player
            res.vEl_cssWH = vElCSS

            return res;

        },
        _isActionBox: function(vEl, walkRes, pEl_idx) {

            function absDiff(w1, w2, h1, h2) {
                let w = (w1 - w2),
                    h = h1 - h2;
                return [(w > 0 ? w : -w), (h > 0 ? h : -h)]
            }

            function midPoint(rect) {
                return {
                    x: (rect.left + rect.right) / 2,
                    y: (rect.top + rect.bottom) / 2
                }
            }

            let parentCount = walkRes.length;
            if (pEl_idx >= 0 && pEl_idx < parentCount) {} else {
                return;
            }
            let pElr = walkRes[pEl_idx]
            if (!pElr.css) {
                //shadowRoot
                return true;
            }

            let pEl = pElr.elm;

            //prevent activeElement==body
            let pElCSS = domTool.cssWH(pEl, pElr.css);

            //check prediction of parent dimension
            let d1v = absDiff(pElCSS.w, pElr.padW, pElCSS.h, pElr.padH)

            let d1x = d1v[0] < 10
            let d1y = d1v[1] < 10;

            if (d1x && d1y) return true; //both edge along the container   -  fit size
            if (!d1x && !d1y) return false; //no edge along the container     -  body contain the video element, fixed width&height

            //case: youtube video fullscreen

            //check centre point

            let pEl_rect = pEl.getBoundingClientRect()
            let vEl_rect = vEl.getBoundingClientRect()

            let pEl_center = midPoint(pEl_rect)
            let vEl_center = midPoint(vEl_rect)

            let d2v = absDiff(pEl_center.x, vEl_center.x, pEl_center.y, vEl_center.y);

            let d2x = d2v[0] < 10;
            let d2y = d2v[1] < 10;

            return (d2x && d2y);

        },
        getRect: function(element) {
            let rect = element.getBoundingClientRect();
            let scroll = domTool.getScroll();
            return {
                pageX: rect.left + scroll.left,
                pageY: rect.top + scroll.top,
                screenX: rect.left,
                screenY: rect.top
            };
        },
        getScroll: function() {
            return {
                left: document.documentElement.scrollLeft || document.body.scrollLeft,
                top: document.documentElement.scrollTop || document.body.scrollTop
            };
        },
        getClient: function() {
            return {
                width: document.compatMode == 'CSS1Compat' ? document.documentElement.clientWidth : document.body.clientWidth,
                height: document.compatMode == 'CSS1Compat' ? document.documentElement.clientHeight : document.body.clientHeight
            };
        },
        addStyle: //GM_addStyle,
            function(css, head) {
                if (!head) {
                    let _doc = document.documentElement;
                    head = _doc.querySelector('head') || _doc.querySelector('html') || _doc;
                }
                let doc = head.ownerDocument;
                let style = doc.createElement('style');
                style.type = 'text/css';
                let node = doc.createTextNode(css);
                style.appendChild(node);
                head.appendChild(style);
                //console.log(document.head,style,'add style')
                return style;
            },
        eachParentNode: function(dom, fn) {
            let parent = dom.parentNode
            while (parent) {
                let isEnd = fn(parent, dom)
                parent = parent.parentNode
                if (isEnd) {
                    break
                }
            }
        },

        hideDom: function hideDom(selector) {
            let dom = document.querySelector(selector)
            if (dom) {
                $ws.requestAnimationFrame(function() {
                    dom.style.opacity = 0;
                    dom.style.transform = 'translate(-9999px)';
                    dom = null;
                })
            }
        }
    };

    const handle = {

        timeupdatef_ell: async function(opts) {
            let video = opts.video;
            let time = video.currentTime;
            if (time !== opts.lastTime) {
                opts.lastTime = time;
                video.dispatchEvent(opts.evt);
            }
        },
        playbackELL: async (opts) => {

            let qTime = +new Date;
            if (qTime >= opts.pTime) {
                opts.pTime = qTime + opts.timeDelta; //prediction of next Interval
                opts.playbackRecord()
            }

        },
        playbackRecord: async function() {

            //this refer to endless's opts
            let player = this.player;

            let _uid = this.player_uid; //_h5p_uid_encrypted
            if (!_uid) return;

            let shallSave = true;
            let currentTimeToSave = ~~player.currentTime;

            if (this._lastSave == currentTimeToSave) shallSave = false;

            if (shallSave) {

                this._lastSave = currentTimeToSave

                //console.log('aasas',this.player_uid, shallSave, '_play_progress_'+_uid, currentTimeToSave)

                Store.save('_play_progress_' + _uid, jsonStringify({
                    't': currentTimeToSave
                }))

            }

        },
        pr_updateUID: function() {

            //this refer to endless's opts

            let player = this.player;

            let _uid = player.getAttribute('_h5p_uid_encrypted') || ''
            if (!_uid) return false;
            this.player_uid = _uid;

            return true;

        },

    };


    class PlayerConf{

        constructor(){

            this.rotate=0;
            this.fps=30;
            this.filter_key={};
            this.filter_view_units={
                'hue-rotate': 'deg',
                'blur': 'px'
            };
            this.filterReset();

        }

        setFilter(prop, f){

            let oldValue = this.filter_key[prop];
            if(typeof oldValue !='number')return;
            let newValue=f( oldValue )
            if(oldValue!=newValue ){

                newValue = +newValue.toFixed(6); //javascript bug

            }
            
            this.filter_key[prop] = newValue
            this.filterSetup();

            return newValue;



        }

        filterSetup (options) {
    
            var ums = GM_getValue("unsharpen_mask")
            if (!ums) ums = ""

            let view = ''
            let playerElm = $hs.player();
            if (!playerElm) return;
            for (let view_key in this.filter_key) {
                let filter_value = +((+this.filter_key[view_key] || 0).toFixed(3))
                let view_unit = this.filter_view_units[view_key] || ''
                view += `${view_key}(${filter_value}${view_unit}) `
                this.filter_key[view_key] = Number(+this.filter_key[view_key] || 0)
            }
            if (ums) view += `url("#_h5p_${ums}")`;
            if (options && options.grey) view += ' url("#grey1")';
            playerElm.style.filter = view; //performance in firefox is bad
        }

        filterReset() {
            this.filter_key['brightness'] = 1.0
            this.filter_key['contrast'] = 1.0
            this.filter_key['saturate'] = 1.0
            this.filter_key['hue-rotate'] = 0.0
            this.filter_key['blur'] = 0.0
            this.filterSetup()
        }

    }

    const playerConfs={}

    class VideoListener {

        constructor(shadowRoot) {

            this.usable = false;
            this.observer = null;
            this.asyncCheckFunc = null;
            this.cid_asyncCheckFunc = 0;

            this.rootElement = shadowRoot || window.document;
            if (this.rootElement && !this.rootElement.__videoListenerEnabled__) {
                this.rootElement.__videoListenerEnabled__ = true;
                this.usable = true;
            }
        }

        delayCheck() {
            if (this.cid_asyncCheckFunc) $ws.cancelAnimationFrame(this.cid_asyncCheckFunc);
            this.cid_asyncCheckFunc = $ws.requestAnimationFrame(this.asyncCheckFunc);
        }

        listen(fn) {
            if (!this.usable) return;
            this.init_observer();
            this.fn = fn; // single function
            this.checkOnce();
            this.checkEach();
        }
        init_observer() {
            if (this.observer) return;
            this.asyncCheckFunc = () => this.checkEach();
            this.observer = new window.__MutationObserver(this.mutationObserverCallback);
            this.observer.observe(this.rootElement, {
                childList: true,
                subtree: true
            })
            this.observer.videoListener = this;
        }
        mutationObserverCallback(mutations, observer) {


            if (mutations && 'length' in mutations) {
                var requireChecking = Array.prototype.some.call(mutations, mutation => {
                    let addedNodes = mutation.addedNodes;
                    if (!addedNodes || !addedNodes.length) return false;
                    return Array.prototype.some.call(addedNodes, addedNode => {
                        return (addedNode.nodeName == 'VIDEO' || addedNode.childElementCount > 0)
                    });
                });

                if (requireChecking) observer.videoListener.delayCheck();

            }

        }

        async checkOnce() {
            var treeWalker = document.createTreeWalker(
                document.documentElement,
                NodeFilter.SHOW_ELEMENT, {
                    acceptNode: (node) => (node.shadowRoot ? NodeFilter.FILTER_ACCEPT : NodeFilter.FILTER_SKIP)
                }
            );
            var nodeList = [];
            while (treeWalker.nextNode()) nodeList.push(treeWalker.currentNode);
            for (const node of nodeList) this._checkRoot(node.shadowRoot);
        }

        async checkEach() {
            this._checkRoot(this.rootElement);
        }
        _checkRoot(shadowRoot) {
            const videos = shadowRoot.querySelectorAll('VIDEO'); //shadowRoot don't have getElementsByTagName
            for (const video of videos) {
                if (!video._onceMutationReady) {
                    video._onceMutationReady = true;
                    video.setAttribute('h5p_observed', '1');
                    this.fn(video);
                }
            }
        }
    }


    $hs = {

        pictureInPicture: function(videoElm) {
            if (document.pictureInPictureElement) {
                document.exitPictureInPicture();
            } else if ('requestPictureInPicture' in videoElm) {
                videoElm.requestPictureInPicture()
            } else {
                $hs.tips('PIP is not supported.');
            }

        },

        handlerVideoPlaying: function(evt) {

            $hs._actionBoxSet(evt.target);
            $hs.playerInstance = evt.target;
            $hs.onVideoTriggering();

            if (!$hs.enable) return $hs.tips(false);
            let player = this;
            if (player._isThisPausedBefore_) consoleLog('resumed')
            let _pausedbefore_ = player._isThisPausedBefore_

            if (player.playpause_cid) {
                clearTimeout(player.playpause_cid);
                player.playpause_cid = 0;
            }
            let _last_paused = player._last_paused
            player._last_paused = player.paused
            if (_last_paused === !player.paused) {
                player.playpause_cid = setTimeout(() => {
                    if (player.paused === !_last_paused && !player.paused && _pausedbefore_) {
                        $hs.tips('Playback resumed', undefined, 2500)
                    }
                }, 90)
            }

            /* 播放的時候進行相關同步操作 */

            if (!player._record_continuous) {

                /* 同步之前設定的播放速度 */
                $hs.setPlaybackRate()

                if (!_endlessloop) _endlessloop = new EndlessLoop();

                player._record_continuous = _endlessloop.append(handle.playbackELL);
                player._record_continuous._lastSave = -999;

                player._record_continuous.timeDelta = 2000;
                player._record_continuous.player = player
                player._record_continuous.playbackRecord = handle.playbackRecord;
                player._record_continuous.updateUID = handle.pr_updateUID;

                player._record_continuous.playingWithRecording = function() {
                    let player = this.player;
                    if (!player.paused && this.updateUID() && !this.looping) {
                        this.pTime = 0;
                        this.loopingStart();
                    }
                }

            }

            player._record_continuous.playingWithRecording(player); //try to start recording

            for (const opts of _ell_timeupdatefs) opts.loopingStart();

            player._isThisPausedBefore_ = false;

        },
        handlerVideoPause: function() {

            if (!$hs.enable) return $hs.tips(false);
            let player = this;
            consoleLog('pause')
            player._isThisPausedBefore_ = true;

            let _last_paused = player._last_paused
            player._last_paused = player.paused
            if (player.playpause_cid) {
                clearTimeout(player.playpause_cid);
                player.playpause_cid = 0;
            }
            if (_last_paused === !player.paused) {
                player.playpause_cid = setTimeout(() => {
                    if (player.paused === !_last_paused && player.paused) {
                        $hs.tips('Playback paused', undefined, 2500)
                    }
                }, 90)
            }


            if (player._record_continuous && player._record_continuous.looping) {
                player._record_continuous.playbackRecord(); //playbackRecord once before stopping  //handle.playbackRecord;
                player._record_continuous.loopingStop();
            }

            for (const opts of _ell_timeupdatefs) opts.loopingStop();

        },
        handlerVideoVolumeChange: function() {

            if (this.volume >= 0) {} else {
                return;
            }
            let cVol = this.volume;
            let cMuted = this.muted;

            if (cVol === this._volume_p && cMuted === this._muted_p) {
                // nothing changed
            } else if (cVol === this._volume_p && cMuted !== this._muted_p) {
                // muted changed
            } else { // cVol != pVol

                // only volume changed

                let shallShowTips = this._volume >= 0; //prevent initialization

                if (!cVol) {
                    this.muted = true;
                } else if (cMuted) {
                    this.muted = false;
                    this._volume = cVol;
                } else if (!cMuted) {
                    this._volume = cVol;
                }
                consoleLog('volume changed')

                let player = this;

                if (shallShowTips)
                    $hs.tips('Volume: ' + dround(player.volume * 100) + '%', undefined, 3000)

            }

            this._volume_p = cVol
            this._muted_p = cMuted

        },
        handlerVideoLoadedMetaData: function() {
            consoleLog('video size', this.videoWidth + ' x ' + this.videoHeight);

            let player = this
            let vpid = player.getAttribute('_h5ppid') || null;
            if (!vpid || !player.currentSrc) return;

            if ($hs.varSrcList[vpid] != player.currentSrc) {
                $hs.varSrcList[vpid] = player.currentSrc;
                $hs.videoSrcFound(player);
                $hs._actionBoxSet(player);
            }

            if (!player._onceVideoLoaded) {
                player._onceVideoLoaded = true;
                player.addEventListener('playing', $hs.handlerVideoPlaying)
                player.addEventListener('pause', $hs.handlerVideoPause);
                player.addEventListener("volumechange", $hs.handlerVideoVolumeChange);
            }

        },
        handlerElementMouseEnter: function(evt) {
            if ($hs.intVideoInitCount > 0) {} else {
                return;
            }
            var videoActive = $hs.trigger_actionBoxes.some(actionBox => (evt.target === actionBox || actionBox.contains(evt.target)))
            $hs.debug01(evt, videoActive)
            if (!videoActive) return;


            let player = evt.target;
            if (player.nodeName != "VIDEO") player = player.querySelector('video[_h5ppid]');
            if (player) $hs._actionBoxSet(player);
        },
        handlerElementMouseDown: function(evt) {

            if ($hs.intVideoInitCount > 0) {} else {
                return;
            }
            var videoActive = $hs.trigger_actionBoxes.some(actionBox => (evt.target === actionBox || actionBox.contains(evt.target)))
            $hs.debug01(evt, videoActive)
            if (!videoActive) return;



            let player = this; //evt.target may be something else
            if (player.nodeName != "VIDEO") player = player.querySelector('video[_h5ppid]');
            if (!player) return;   
                     
            let layoutBox = $hs.getPlayerBlockElement(player).parentNode;
            if (layoutBox && layoutBox.contains(evt.target)) {
                $hs.makeFocus(player, evt)
            }
        },
        handlerElementWheelTuneVolume: function(evt) { //shift + wheel

            if ($hs.intVideoInitCount > 0) {} else {
                return;
            }
            var videoActive = $hs.trigger_actionBoxes.some(actionBox => (evt.target === actionBox || actionBox.contains(evt.target)))
            $hs.debug01(evt, videoActive)
            console.log(166, !videoActive, !evt.shiftKey, evt.deltaY, evt.target)
            if (!videoActive) return;
            if (!evt.shiftKey) return;
            if (evt.deltaY) {
                let player = $hs.player();
                if (!player) return;

                if (evt.deltaY > 0) {

                    if ((player.muted && player.volume === 0) && player._volume > 0) {

                        player.muted = false;
                        player.volume = player._volume;
                    } else if (player.muted && (player.volume > 0 || !player._volume)) {
                        player.muted = false;
                    }
                    $hs.tuneVolume(-0.05)

                    evt.stopPropagation()
                    evt.preventDefault()
                    return false

                } else if (evt.deltaY < 0) {

                    if ((player.muted && player.volume === 0) && player._volume > 0) {
                        player.muted = false;
                        player.volume = player._volume;
                    } else if (player.muted && (player.volume > 0 || !player._volume)) {
                        player.muted = false;
                    }
                    $hs.tuneVolume(+0.05)

                    evt.stopPropagation()
                    evt.preventDefault()
                    return false

                }
            }
        },
        debug01: function(evt, videoActive) {

            if (!$hs.eventHooks) {
                document.__h5p_eventhooks = ($hs.eventHooks = {
                    _debug_: []
                });
            }
            $hs.eventHooks._debug_.push([videoActive, evt.type]);
            console.log('h5p eventhooks = document.__h5p_eventhooks')
        },
        handlerElementDblClick: function(evt) {

            if ($hs.intVideoInitCount > 0) {} else {
                return;
            }
            var videoActive = $hs.trigger_actionBoxes.some(actionBox => (evt.target === actionBox || actionBox.contains(evt.target)))
            $hs.debug01(evt, videoActive)
            if (!videoActive) return;

            consoleLog('dblclick', this, evt.target)

            if (this.nodeName == 'VIDEO' && evt.target.nodeName == 'VIDEO' && this.getAttribute('_h5p_actionbox_')) {
                return;
            }
            if (document.readyState != "complete") return;

            var actionBox = $hs.trigger_actionBoxes.filter(actionBox => (evt.target === actionBox || actionBox.contains(evt.target)))[0]


            let vpid = actionBox.getAttribute('_h5p_actionbox_');
            if (!vpid) return;
            let player = getRoot(actionBox).querySelector(`[_h5ppid="${vpid}"]`);
            $hs._actionBoxSet(player)
            $hs.playerInstance = player
            $hs.onVideoTriggering()

            $hs.callFullScreenBtn();

            evt.stopPropagation()
            evt.preventDefault()
            return false

        },
        handlerDocFocusOut: function(e) {
            let doc = this;
            $hs.focusFxLock = true;
            $ws.requestAnimationFrame(function() {
                $hs.focusFxLock = false;
                if (!$hs.enable) $hs.tips(false);
                else
                if (!doc.hasFocus() && $hs.player() && !$hs.isLostFocus) {
                    $hs.isLostFocus = true;
                    consoleLog('doc.focusout')
                    //$hs.tips('focus is lost', -1);
                }
            });
        },
        handlerDocFocusIn: function(e) {
            let doc = this;
            if ($hs.focusFxLock) return;
            $ws.requestAnimationFrame(function() {

                if ($hs.focusFxLock) return;
                if (!$hs.enable) $hs.tips(false);
                else
                if (doc.hasFocus() && $hs.player() && $hs.isLostFocus) {
                    $hs.isLostFocus = false;
                    consoleLog('doc.focusin')
                    $hs.tips(false);

                }
            });
        },

        handlerWinMessage: async function(e) {
            let tag, ed;
            if (typeof e.data == 'object' && typeof e.data.tag == 'string') {
                tag = e.data.tag;
                ed = e.data
            } else {
                return;
            }
            let msg = null,
                success = 0;
            switch (tag) {
                case 'consoleLog':
                    var msg_str = ed.str;
                    var msg_stype = ed.stype;
                    if (msg_stype === 1) {
                        msg = (document[str_postMsgData] || {})[msg_str] || [];
                        success = 1;
                    } else if (msg_stype === 2) {
                        msg = jsonParse(msg_str);
                        if (msg && msg.d) {
                            success = 2;
                            msg = msg.d;
                        }
                    } else {
                        msg = msg_str
                    }
                    var p = (ed.passing && ed.winOrder) ? [' | from win-' + ed.winOrder] : [];
                    if (success) {
                        console.log(...msg, ...p)
                        //document[ed.data]=null;   // also delete the information
                    } else {
                        console.log('msg--', msg, ...p, ed);
                    }
                    break;

            }
        },

        isInActiveMode: function(activeElm, player) {

            if (activeElm == player) {
                return true;
            }

            if($hs.trigger_actionBoxes[0]){
                var actionBox=$hs.trigger_actionBoxes[0];
                if(activeElm==actionBox || actionBox.contains(activeElm)){
                return true;
                }

            }

            let _checkingPass = false;
            
            if(!player) return;
            let layoutBox = $hs.getPlayerBlockElement(player).parentNode;
            if (layoutBox && layoutBox.parentNode && layoutBox.contains(activeElm)) {
                let rpid = player.getAttribute('_h5ppid') || "NULL";
                let actionBox = layoutBox.parentNode.querySelector(`[_h5p_actionbox_="${rpid}"]`); //the box can be layoutBox
                if (actionBox && actionBox.contains(activeElm)) _checkingPass = true;
            }

            return _checkingPass
        },


        toolCheckFullScreen: function(doc) {
            if (typeof doc.fullScreen == 'boolean') return doc.fullScreen;
            if (typeof doc.webkitIsFullScreen == 'boolean') return doc.webkitIsFullScreen;
            if (typeof doc.mozFullScreen == 'boolean') return doc.mozFullScreen;
            return null;
        },

        toolFormatCT: function(u) {

            let w = Math.round(u, 0)
            let a = w % 60
            w = (w - a) / 60
            let b = w % 60
            w = (w - b) / 60
            let str = ("0" + b).substr(-2) + ":" + ("0" + a).substr(-2);
            if (w) str = w + ":" + str

            return str

        },

        /* 提示文本的字號 */
        fontSize: 16,
        enable: true,
        playerInstance: null,
        translate: {
            x: 0,
            y: 0
        },
        playbackRate: 1,
        /* 快進快退步長 */
        skipStep: 5,
        /* 獲取當前播放器的實例 */
        player: function() {
            return $hs.playerInstance || $hs.getPlayerList()[0]
        },
        /* 每個網頁可能存在的多個video播放器 */
        getPlayerList: function() {
            let list = [...document.querySelectorAll('video')];
            for (const shadowRoot of shadowRoots) list.push(...shadowRoot.querySelectorAll('video'));
            return list
        },
        getPlayerWrapDom: function() {
            let player = $hs.player()
            if (!player || !player.getBoundingClientRect) return
            let wrapDom = null
            let layoutBox = player.getBoundingClientRect()
            if (layoutBox.width && layoutBox.height) {
                domTool.eachParentNode(player, function(parent) {
                    if (parent === document || !parent.getBoundingClientRect) return
                    let parentBox = parent.getBoundingClientRect()
                    if (parentBox.width === layoutBox.width && parentBox.height === layoutBox.height) {
                        wrapDom = parent
                    }
                })
            }
            return wrapDom
        },
        makeFocus: function(player, evt) {
            setTimeout(function() {
                let rpid = player.getAttribute('_h5ppid');
                let actionBox = getRoot(player).querySelector(`[_h5p_actionbox_="${rpid}"]`);

                //console.log('p',rpid, player,actionBox,document.activeElement)
                if (actionBox && actionBox != document.activeElement && !actionBox.contains(document.activeElement)) {
                    consoleLog('make focus on', actionBox)
                    actionBox.focus();

                }

            }, 300)
        },

        trigger_actionBoxes: [],

        getActionBlockElement:function(player, layoutBox){

            if(!player||!layoutBox)return null;

            
            let walkRes = domTool._isActionBox_1(player, layoutBox);
            let parentCount = walkRes.length;
            let actionBox = null;
            if (parentCount - 1 >= 0 && domTool._isActionBox(player, walkRes, parentCount - 1)) {
                actionBox = walkRes[parentCount - 1].elm;
            } else if (parentCount - 2 >= 0 && domTool._isActionBox(player, walkRes, parentCount - 2)) {
                actionBox = walkRes[parentCount - 2].elm;
            } else {
                actionBox = player;
            }


            var search = $hs.videoFullscreenBtns(actionBox, 4);
            if(search&&search.elements.length>0) actionBox = search.container;

            return actionBox;


        },

        _actionBoxSet: function(player) {

            if (!player) return null;
            let vpid = player.getAttribute('_h5ppid');
            if (!vpid) return null;
            
            let layoutBox = $hs.getPlayerBlockElement(player).parentNode;
            let actionBox = $hs.getActionBlockElement(player, layoutBox);


            //console.log('actionbox search:', actionBox)

            if (actionBox && actionBox.getAttribute('_h5p_actionbox_') != vpid) {
                consoleLog('D-1', actionBox);
                for (const previousActionboxes of getRoot(player).querySelectorAll(`[_h5p_actionbox_="${vpid}"]`)) {
                    //change of parentNode
                    previousActionboxes.removeAttribute('_h5p_actionbox_');
                }
                actionBox.setAttribute('_h5p_actionbox_', vpid);
                $hs.trigger_actionBoxes = [actionBox];

                if (!actionBox.hasAttribute('tabindex')) actionBox.setAttribute('tabindex', '-1');



            }
            return actionBox;
        },

        videoSrcFound: function(player) {

            // src loaded

            if (!player) return;
            let vpid = player.getAttribute('_h5ppid') || null;
            if (!vpid || !player.currentSrc) return;

            player._isThisPausedBefore_ = false;

            player.removeAttribute('_h5p_uid_encrypted');

            if (player._record_continuous) player._record_continuous._lastSave = -999; //first time must save

            let uid_A = location.pathname.replace(/[^\d+]/g, '') + '.' + location.search.replace(/[^\d+]/g, '');
            let _uid = location.hostname.replace('www.', '').toLowerCase() + '!' + location.pathname.toLowerCase() + 'A' + uid_A + 'W' + player.videoWidth + 'H' + player.videoHeight + 'L' + (player.duration << 0);

            digestMessage(_uid).then(function(_uid_encrypted) {

                let d = +new Date;

                let recordedTime = null;

                ;
                (function() {
                    //read the last record only;

                    let k1 = '_h5_player_play_progress_';
                    let k1n = '_play_progress_';
                    let k2 = _uid_encrypted;
                    let k3 = k1 + k2;
                    let k3n = k1n + k2;
                    let m2 = Object.keys(localStorage).filter(key => key.substr(0, k3.length) == k3); //all progress records for this video
                    let m2v = m2.map(keyName => +(keyName.split('+')[1] || '0'))
                    let m2vMax = Math.max(0, ...m2v)
                    if (!m2vMax) recordedTime = null;
                    else {
                        let _json_recordedTime = null;
                        _json_recordedTime = Store.read(k3n + '+' + m2vMax);
                        if (!_json_recordedTime) _json_recordedTime = {};
                        else _json_recordedTime = jsonParse(_json_recordedTime);
                        if (typeof _json_recordedTime == 'object') recordedTime = _json_recordedTime;
                        else recordedTime = null;
                        recordedTime = typeof recordedTime == 'object' ? recordedTime.t : recordedTime;
                        if (typeof recordedTime == 'number' && (+recordedTime >= 0 || +recordedTime <= 0)) {

                        } else if (typeof recordedTime == 'string' && recordedTime.length > 0 && (+recordedTime >= 0 || +recordedTime <= 0)) {
                            recordedTime = +recordedTime
                        } else {
                            recordedTime = null
                        }
                    }
                    if (recordedTime !== null) {
                        player._h5player_lastrecord_ = recordedTime;
                    } else {
                        player._h5player_lastrecord_ = null;
                    }
                    if (player._h5player_lastrecord_ > 5) {
                        consoleLog('last record playing', player._h5player_lastrecord_);
                        setTimeout(function() {
                            let tmp_player = $hs.playerInstance;
                            $hs.playerInstance = player;
                            $hs.tips(`Press Shift-R to restore Last Playback: ${$hs.toolFormatCT(player._h5player_lastrecord_)}`, 5000, 4000)
                            $hs.playerInstance = tmp_player
                        }, 1000)
                    }

                })();
                // delay the recording by 5.4s => prevent ads or mis operation
                setTimeout(function() {

                    let k1 = '_h5_player_play_progress_';
                    let k1n = '_play_progress_';
                    let k2 = _uid_encrypted;
                    let k3 = k1 + k2;
                    let k3n = k1n + k2;

                    //re-read all the localStorage keys
                    let m1 = Object.keys(localStorage).filter(key => key.substr(0, k1.length) == k1); //all progress records in this site
                    let p = m1.length + 1;

                    for (const key of m1) { //all progress records for this video
                        if (key.substr(0, k3.length) == k3) {
                            localStorage.removeItem(key); //remove previous record for the current video
                            p--;
                        }
                    }

                    if (recordedTime !== null) {
                        Store.save(k3n + '+' + d, jsonStringify({
                            't': recordedTime
                        })) //prevent loss of last record
                    }

                    const _record_max_ = 48;
                    const _record_keep_ = 26;

                    if (p > _record_max_) {
                        //exisiting 48 records for one site;
                        //keep only 26 records

                        const comparator = (a, b) => (a.t < b.t ? -1 : a.t > b.t ? 1 : 0);

                        m1
                            .map(keyName => ({
                                keyName,
                                t: +(keyName.split('+')[1] || '0')
                            }))
                            .sort(comparator)
                            .slice(0, -_record_keep_)
                            .forEach((item) => localStorage.removeItem(item.keyName));

                        consoleLog(`stored progress: reduced to ${_record_keep_}`)
                    }

                    player.setAttribute('_h5p_uid_encrypted', _uid_encrypted + '+' + d);

                    //try to start recording
                    if (player._record_continuous) player._record_continuous.playingWithRecording();

                }, 5400);

            })

        },
        bindDocEvents: function(rootNode) {
            if (!rootNode._onceBindedDocEvents) {
                rootNode._onceBindedDocEvents = true;
                rootNode.addEventListener('keydown', $hs.handlerRootKeyDownEvent, true)
                document._debug_rootNode_ = rootNode;

                rootNode.addEventListener('mouseenter', $hs.handlerElementMouseEnter, true)
                rootNode.addEventListener('mousedown', $hs.handlerElementMouseDown, true)
                rootNode.addEventListener('dblclick', $hs.handlerElementDblClick, true)
                rootNode.addEventListener('wheel', $hs.handlerElementWheelTuneVolume, {
                    passive: false
                });
                // wheel - bubble events to keep it simple (i.e. it must be passive:false & capture:false)

            }
        },
        fireGlobalInit: function() {

            if ($hs.intVideoInitCount != 1) return;

            if (!$hs.varSrcList) $hs.varSrcList = {};

            $hs.isLostFocus = null;

            try {
                //iframe may not be able to control top window
                //error; just ignore with async
                let topDoc = window.top && window.top.document ? window.top.document : null;
                if (topDoc) {
                    topDoc.addEventListener('focusout', $hs.handlerDocFocusOut, true)
                    topDoc.addEventListener('focusin', $hs.handlerDocFocusIn, true)
                }

            } catch (e) {}

            Store.clearInvalid(_sVersion_)

        },
        onVideoTriggering: function() {


            // initialize a single video player - h5Player.playerInstance

            /**
             * 初始化播放器實例
             */
            let player = $hs.playerInstance
            if (!player) return

            let vpid = player.getAttribute('_h5ppid');

            if (!vpid) return;

            let firstTime = !!$hs.initTips()
            if (firstTime) {
                // first time to trigger this player
                if (!player.hasAttribute('playsinline')) player.setAttribute('playsinline', 'playsinline');
                if (!player.hasAttribute('x-webkit-airplay')) player.setAttribute('x-webkit-airplay', 'deny');
                if (!player.hasAttribute('preload')) player.setAttribute('preload', 'auto');
                player.style['image-rendering'] = 'crisp-edges';
                
                
                
                $hs.playbackRate = $hs.getPlaybackRate()
            }

        },
        getPlaybackRate: function() {
            let playbackRate = Store.read('_playback_rate_') || $hs.playbackRate
            return Number(Number(playbackRate).toFixed(1))
        },
        getPlayerBlockElement:function(player){
            //without checkActiveBox, just a DOM for you to append tipsDom

            var layoutBox = null,
                wPlayer = null

            if (!player || !player.offsetHeight || !player.offsetWidth || !player.parentNode) {
                return null;
            }

            function search_nodes() {

                wPlayer = player; // NOT NULL
                layoutBox = wPlayer.parentNode; // NOT NULL

                while (layoutBox.parentNode && layoutBox.nodeType == 1 && layoutBox.offsetHeight == 0) {
                    wPlayer = layoutBox; // NOT NULL
                    layoutBox = layoutBox.parentNode; // NOT NULL
                }
                //container must be with offsetHeight
            
                while (layoutBox.parentNode && layoutBox.nodeType == 1 && layoutBox.offsetHeight < player.offsetHeight) {
                    wPlayer = layoutBox; // NOT NULL
                    layoutBox = layoutBox.parentNode; // NOT NULL
                }
                //container must have height >= player height

            }

            search_nodes();

            if (layoutBox.nodeType == 11) {


                //shadowRoot without html and body
                let shadowChild, shadowElm_container, shadowElm_head, shadowElm_html;
                let rootNode = getRoot(player);
                if (rootNode.querySelectorAll('html,body').length < 2) {

                    shadowElm_container = player.ownerDocument.createElement('BODY')
                    rootNode.insertBefore(shadowElm_container, rootNode.firstChild)

                    while (shadowChild = shadowElm_container.nextSibling) shadowElm_container.appendChild(shadowChild);

                    shadowElm_head = rootNode.insertBefore(player.ownerDocument.createElement('HEAD'), shadowElm_container)

                    shadowElm_html = rootNode.insertBefore(player.ownerDocument.createElement('HTML'), shadowElm_head)

                    shadowElm_container.setAttribute('style', 'padding:0;margin:0;border:0;    box-sizing: border-box;')
                    shadowElm_html.setAttribute('style', 'padding:0;margin:0;border:0;    box-sizing: border-box;')

                    shadowElm_html.appendChild(shadowElm_head)
                    shadowElm_html.appendChild(shadowElm_container)

                }

                search_nodes();

            }

            //condition:
            //!layoutBox.parentNode || layoutBox.nodeType != 1 || layoutBox.offsetHeight > player.offsetHeight

            // layoutBox is a node contains <video> and offsetHeight>=video.offsetHeight
            // wPlayer is a HTML Element (nodeType==1)
            // you can insert the DOM element into the layoutBox

            if(layoutBox && wPlayer && layoutBox.nodeType===1 && wPlayer.parentNode==layoutBox) return wPlayer;
            throw 'unknown error';

        },
        getCommonContainer: function(elm1, elm2) {

            let box1 = elm1;
            let box2 = elm2;

            while (box1 && box2) {
                if (box1.contains(box2) || box2.contains(box1)) {
                    break;
                }
                box1 = box1.parentNode;
                box2 = box2.parentNode;
            }

            let layoutBox = null;

            box1 = (box1 && box1.contains(elm2)) ? box1 : null;
            box2 = (box2 && box2.contains(elm1)) ? box2 : null;

            if (box1 && box2) layoutBox = box1.contains(box2) ? box2 : box1;
            else layoutBox = box1 || box2 || null;

            return layoutBox

        },
        change_layoutBox: function(tipsDom) {
            let player = $hs.player()
            if(!player) return;
            let wPlayer = $hs.getPlayerBlockElement(player);
            let layoutBox = wPlayer.parentNode;

            if ((layoutBox && layoutBox.nodeType == 1) && (!tipsDom.parentNode || tipsDom.parentNode !== layoutBox)) {

                consoleLog('changed_layoutBox')
                layoutBox.insertBefore(tipsDom, wPlayer);

            }
        },
    
        queryFullscreenBtnsIndependant: function(parentNode, returnElementsOnly) {

            var btns = [];
            for (const elm of parentNode.querySelectorAll('[class*="full"][class*="screen"]')) {
                var className = (elm.getAttribute('class') || "");
                if (/\b(fullscreen|full-screen)\b/i.test(className.replace(/([A-Z][a-z]+)/g, '-$1-').replace(/[\_\-]+/g, '-'))) {

                    var hasClickListeners = null,
                        childElementCount = null,
                        isVisible = null;


                    if ('_listeners' in elm) {

                        hasClickListeners = elm._listeners && elm._listeners.click && elm._listeners.click.funcCount > 0

                    }

                    if ('childElementCount' in elm) {

                        childElementCount = elm.childElementCount;

                    }
                    if ('offsetParent' in elm) {
                        isVisible = !!elm.offsetParent; //works with parent/self display none; not work with visiblity hidden / opacity0

                    }

                    if (hasClickListeners) {
                        var btn = {
                            elm,
                            isVisible,
                            hasClickListeners,
                            childElementCount,
                            isContained: null
                        };


                        //console.log('btn', btn)
                        btns.push(returnElementsOnly ? elm : btn)

                    }

                }
            }
            return btns;

        },
        exclusiveElements: function(elms) {

            //not containing others
            var res = [];

            for (const roleElm of elms) {

                var isContained = false;
                for (const testElm of elms) {
                    if (testElm != roleElm && roleElm.contains(testElm)) {
                        isContained = true;
                        break;
                    }
                }
                if (!isContained) res.push(roleElm)
            }
            return res;

        },
        videoFullscreenBtns: function(startPoint, searchCount) {


            var c = 0,
                p = startPoint,
                q = null;
            while (p && (++c <= searchCount)) {

                if (p.querySelectorAll('video').length !== 1) break;

                var elmFullscreenBtns = $hs.queryFullscreenBtnsIndependant(p, true);
                if (elmFullscreenBtns.length > 0) {

                    var exclusiveFullscreenBtns = $hs.exclusiveElements(elmFullscreenBtns)
                    if (exclusiveFullscreenBtns.length > 0) {
                        return {
                        container:p,
                        elements:exclusiveFullscreenBtns
                        };

                    }
                }


                q = p;
                p = p.parentNode;
            }

            return null;




        },
        callFullScreenBtn: function() {
            
            let player = $hs.player()
            if (!player || !player.ownerDocument || !('exitFullscreen' in player.ownerDocument)) return ;

            let btnElement = null;

            let vpid = player.getAttribute('_h5ppid') || null;

            if (!vpid) return ;
 

            const chFull = $hs.toolCheckFullScreen(player.ownerDocument);

            
            

            if (chFull === true) {
                player.ownerDocument.exitFullscreen();
            }else if (chFull === false) {


                var actionBox=getRoot(player).querySelector(`[_h5p_actionbox_="${vpid}"]`);

                if(actionBox){
                                
                    var exclusiveFullscreenBtns = $hs.videoFullscreenBtns(actionBox,1);
                    var btnElements = exclusiveFullscreenBtns?exclusiveFullscreenBtns.elements:null;
                    if (btnElements&&btnElements.length > 0) {

                        //consoleLog('fullscreen btn', btnElements)

                        const lens_elemsClassName = btnElements.map(elm => elm.className.length)
                        const j_elemsClassName = Math.min(...lens_elemsClassName)
                        let btnElement_idx = lens_elemsClassName.lastIndexOf(j_elemsClassName)
                        // pick the last btn if there is more than one
                        btnElement=btnElements[btnElement_idx];
                        window.requestAnimationFrame(()=>btnElement.click());
                        //consoleLog('original fullscreen')

                    }
                }


            }

            if(chFull === null || (chFull === false && !btnElement)){

                let layoutBox = $hs.getPlayerBlockElement(player).parentNode;
    
                let gPlayer = null;
                if(!layoutBox || !layoutBox.parentNode){
                    consoleLog('the container for DOM fullscreen cannot be found')
                    return;
                }
                gPlayer = layoutBox.parentNode.querySelector(`[_h5p_actionbox_="${vpid}"]`); //the box can be layoutBox
                
                consoleLog('DOM fullscreen', gPlayer)
                try {
                    gPlayer.requestFullscreen() //known bugs : TypeError: fullscreen error
                } catch (e) {
                    consoleLogF('fullscreen error', e)
                }
              
                
            }




        },
        /* 設置播放速度 */
        setPlaybackRate: function(num, flagTips) {
            let player = $hs.player()
            let curPlaybackRate
            if (num) {
                num = +num
                if (num > 0) { // also checking the type of variable
                    curPlaybackRate = num < 0.1 ? 0.1 : +(num.toFixed(1))
                } else {
                    console.error('h5player: 播放速度轉換出錯')
                    return false
                }
            } else {
                curPlaybackRate = $hs.getPlaybackRate()
            }
            /* 記錄播放速度的信息 */

            let changed = curPlaybackRate !== player.playbackRate;

            if (curPlaybackRate !== player.playbackRate) {

                Store.save('_playback_rate_', curPlaybackRate + '')
                $hs.playbackRate = curPlaybackRate
                player.playbackRate = curPlaybackRate
                /* 本身處於1被播放速度的時候不再提示 */
                //if (!num && curPlaybackRate === 1) return;

            }

            flagTips = (flagTips < 0) ? false : (flagTips > 0) ? true : changed;
            if (flagTips) $hs.tips('Playback speed: ' + player.playbackRate + 'x')
        },
        tuneCurrentTime: function(amount, flagTips) {
            let _amount = +(+amount).toFixed(1);
            let player = $hs.player();
            if (_amount >= 0 || _amount < 0) {} else {
                return;
            }

            let newCurrentTime = player.currentTime + _amount;
            if (newCurrentTime < 0) newCurrentTime = 0;
            if (newCurrentTime > player.duration) newCurrentTime = player.duration;

            let changed = newCurrentTime != player.currentTime && newCurrentTime >= 0 && newCurrentTime <= player.duration;

            if (changed) {
                //player.currentTime = newCurrentTime;
                player.pause();
                let t_ch = (Math.random() / 5 + .75);
                player.currentTime = newCurrentTime * t_ch + player.currentTime * (1.0 - t_ch);
                setTimeout(() => {
                    player.play();
                    player.currentTime = newCurrentTime;
                }, 33);
                flagTips = (flagTips < 0) ? false : (flagTips > 0) ? true : changed;
                $hs.tips(false);
                if (flagTips) {
                    if (_amount > 0) $hs.tips(_amount + ' Sec. Forward', undefined, 3000);
                    else $hs.tips(-_amount + ' Sec. Backward', undefined, 3000)
                }
            }

        },
        tuneVolume: function(amount) {
            let _amount = +(+amount).toFixed(2);

            let player = $hs.player()

            let newVol = player.volume + _amount;
            if (newVol < 0) newVol = 0;
            if (newVol > 1) newVol = 1;
            let chVol = player.volume !== newVol && newVol >= 0 && newVol <= 1;

            if (chVol) {

                if (_amount > 0 && player.volume < 1) {
                    player.volume = newVol // positive
                } else if (_amount < 0 && player.volume > 0) {
                    player.volume = newVol // negative
                }
                $hs.tips(false);
                $hs.tips('Volume: ' + dround(player.volume * 100) + '%', undefined)
            }
        },
        switchPlayStatus: function() {
            let player = $hs.player()
            if (player.paused) {
                player.play()
                if (player._isThisPausedBefore_) {
                    $hs.tips(false);
                    $hs.tips('Playback resumed', undefined, 2500)
                }
            } else {
                player.pause()
                $hs.tips(false);
                $hs.tips('Playback paused', undefined, 2500)
            }
        },
        tipsClassName: 'html_player_enhance_tips',
        tips: function(str, duration, order) {
            let player = $hs.player()
            if (!player) {
                consoleLog('h5Player Tips:', str)
                return true
            }

            if (!player.getAttribute('_h5player_tips')) $hs.initTips();

            let tipsSelector = '#' + (player.getAttribute('_h5player_tips') || $hs.tipsClassName) //if this attribute still doesnt exist, set it to the base cls name
            let tipsDom = getRoot(player).querySelector(tipsSelector)
            if (!tipsDom) {
                consoleLog('init h5player tips dom error...')
                return false
            }
            $hs.change_layoutBox(tipsDom);

            if (str === false) {
                tipsDom.innerText = '';
                tipsDom.setAttribute('_potTips_', '0')
            } else {
                order = order || 1000
                tipsDom.tipsOrder = tipsDom.tipsOrder || 0;

                let shallDisplay = true
                if (order < tipsDom.tipsOrder && getComputedStyle(tipsDom).opacity > 0) shallDisplay = false

                if (shallDisplay) {

                    tipsDom._playerBlockElm = $hs.getPlayerBlockElement(player)
                    tipsDom._env_changed = 0;

                    if (!_endlessloop) {
                        _endlessloop = new EndlessLoop();
                    }
                    tipsDom._layoutBoxObjSize = null;
                    if (!$hs.__updateTips) {

                        $hs.__updateTips = _endlessloop.append(function(opts) {

                            let tipsDoms = $hs._cached_tipsDoms;

                            if (!tipsDoms || !tipsDoms.length) return;
                            for (const tipsDom of tipsDoms) {

                                let wPlayer = tipsDom._playerBlockElm;
                                if (wPlayer == null) return;
                                let layoutBox = wPlayer.parentNode;
                                let p = [layoutBox.offsetWidth, layoutBox.offsetHeight, wPlayer.offsetWidth, wPlayer.offsetHeight];

                                if (tipsDom._layoutBoxObjSize) {
                                    let changed = false;
                                    for (let i = 0; i < 4; i++) {
                                        if (tipsDom._layoutBoxObjSize[i] != p[i]) {
                                            changed = true;
                                            break;
                                        }
                                    }
                                    if (!changed) return;
                                    tipsDom._env_changed = (tipsDom._env_changed || 0) + 1;
                                    consoleLog('tipsDom Env changed', tipsDom.id)
                                }

                                tipsDom._layoutBoxObjSize = p;

                                if (!tipsDom.id) return;
                                let player = layoutBox.querySelector(`[_h5player_tips="${tipsDom.id}"]`)
                                if (!player) return;

                                $hs.fixNonBoxingVideoTipsPosition(tipsDom, player)

                            }

                        })

                        $hs.__updateTips.loopingStart();
                    }

                    if (duration === undefined) duration = 2000
                    tipsDom.innerText = str

                    tipsDom.setAttribute('_potTips_', '2')

                    $hs.fixNonBoxingVideoTipsPosition(tipsDom, player);

                    if (duration > 0) {

                        $ws.requestAnimationFrame(() => tipsDom.setAttribute('_potTips_', '1'))

                    } else {
                        order = -1;
                    }

                    tipsDom.tipsOrder = order

                }

            }

            $hs._cached_tipsDoms = document.querySelectorAll('[_potTips_="1"],[_potTips_="2"]'); //48673
        },
        initTips: function() {
            /* 設置提示DOM的樣式 */
            let player = $hs.player()
            let shadowRoot = getRoot(player);
            let doc = player.ownerDocument;
            //console.log((document.documentElement.qq=player),shadowRoot,'xax')
            let parentNode = player.parentNode
            let tcn = player.getAttribute('_h5player_tips') || ($hs.tipsClassName + '_' + (+new Date));
            player.setAttribute('_h5player_tips', tcn)
            if (shadowRoot.querySelector('#' + tcn)) return false;

            if (!shadowRoot._onceAddedCSS) {
                shadowRoot._onceAddedCSS = true;

                var cssStyle = `
                [_potTips_="1"]{
                animation: 2s linear 0s normal forwards 1 delayHide;
                }
                [_potTips_="0"]{
                opacity:0; transform:translate(-9999px);
                }
                [_potTips_="2"]{
                opacity:.95; transform: translate(0,0);
                }

                @keyframes delayHide{
                0%, 99% { opacity:0.95; transform: translate(0,0); }
                100% { opacity:0; transform:translate(-9999px); }
                }
                ` + `
                [_potTips_]{
                font-weight: bold !important;
                position: absolute !important;
                z-index: 999 !important;
                font-size: ${$hs.fontSize || 16}px !important;
                padding: 0px !important;
                border:none !important;
                background: rgba(0,0,0,0) !important;
                color:#738CE6 !important;
                text-shadow: -1px -1px 0 #000, 1px -1px 0 #000, -1px 1px 0 #000, 1px 1px 0 #000;
                top: 50%;
                left: 50%;
                max-width:500px;max-height:50px;
                border-radius:3px;
                font-family: 'microsoft yahei', Verdana, Geneva, sans-serif;
                -webkit-user-select: none;
                -moz-user-select: none;
                -ms-user-select: none;
                user-select: none;
                -webkit-touch-callout: none;
                -webkit-user-select: none;
                -khtml-user-drag: none;
                -khtml-user-select: none;
                -moz-user-select: none;
                -moz-user-select: -moz-none;
                -ms-user-select: none;
                pointer-events: none;
                user-select: none;
                }
                `.replace(/\r\n/g, '');

                var cssContainer = (shadowRoot.querySelector('head') || shadowRoot.querySelector('html') || document.documentElement);

                domTool.addStyle(cssStyle, cssContainer);

            }

            let tipsDom = doc.createElement('div')

            var transitionEvent = whichTransitionEvent('animation');

            tipsDom.addEventListener(transitionEvent, function(e) {
                if (this.getAttribute('_potTips_') == '1') {
                    this.setAttribute('_potTips_', '0')
                    $hs._cached_tipsDoms = shadowRoot.querySelectorAll('[_potTips_="1"],[_potTips_="2"]');
                }
            })

            tipsDom.id = tcn;
            tipsDom.setAttribute('unselectable', 'on');
            tipsDom.setAttribute('_potTips_', '0');
            $hs.change_layoutBox(tipsDom);

            tipsDom._vpr = null
            tipsDom._vpr_pn = null


            return true;
        },

        responsiveSizing: function(container, elm) {

            let gcssP = getComputedStyle(container);

            let gcssE = getComputedStyle(elm);

            //console.log(gcssE.left,gcssP.width)
            let elmBound = {
                left: parseFloat(gcssE.left) / parseFloat(gcssP.width),
                width: parseFloat(gcssE.width) / parseFloat(gcssP.width),
                top: parseFloat(gcssE.top) / parseFloat(gcssP.height),
                height: parseFloat(gcssE.height) / parseFloat(gcssP.height)
            };

            let elm00 = [elmBound.left, elmBound.top];
            let elm01 = [elmBound.left + elmBound.width, elmBound.top];
            let elm10 = [elmBound.left, elmBound.top + elmBound.height];
            let elm11 = [elmBound.left + elmBound.width, elmBound.top + elmBound.height];

            return {
                elm00,
                elm01,
                elm10,
                elm11,
                plw: elmBound.width,
                plh: elmBound.height
            };

        },

        fixNonBoxingVideoTipsPosition: function(tipsDom, player) {

            if (!tipsDom || !player) return;

            let ct = $hs.getCommonContainer(tipsDom, player)

            if (!ct) return;

            //console.log('fixNonBoxingVideoTipsPosition')

            //relative

            let {
                elm00,
                elm01,
                elm10,
                elm11,
                plw,
                plh
            } = $hs.responsiveSizing(ct, player)

            if (isNaN(elm00[0]) || isNaN(elm00[1])) {

                [tipsDom.style.left, tipsDom.style.top] = [player.style.left, player.style.top];
                //eg auto
            } else {

                let rlm00 = elm00.map(t => (t * 100).toFixed(2) + '%');
                //console.log(rlm00);

                [tipsDom.style.left, tipsDom.style.top] = rlm00;

            }

            // absolute

            let _offset = {
                left: 10,
                top: 15
            };

            let customOffset = {
                left: _offset.left,
                top: _offset.top
            };
            let p = tipsDom.getBoundingClientRect();
            let q = player.getBoundingClientRect();
            let currentPos = [p.left, p.top];

            let targetPos = [q.left + player.offsetWidth * 0 + customOffset.left, q.top + player.offsetHeight * 0 + customOffset.top];

            let mL = +tipsDom.style.marginLeft.replace('px', '') || 0;
            if (isNaN(mL)) mL = 0;
            let mT = +tipsDom.style.marginTop.replace('px', '') || 0;
            if (isNaN(mT)) mT = 0;

            let z1 = -(currentPos[0] - targetPos[0]);
            let z2 = -(currentPos[1] - targetPos[1]);

            if (z1 || z2) {

                let y1 = z1 + mL;
                let y2 = z2 + mT;

                tipsDom.style.marginLeft = y1 + 'px';
                tipsDom.style.marginTop = y2 + 'px';

            }
        },

        playerTrigger: function(player, event) {
            if (!player || !event) return
            const pCode = event.code;
            let keyAsm = (event.shiftKey ? SHIFT : 0) | ((event.ctrlKey||event.metaKey) ? CTRL : 0) | (event.altKey ? ALT : 0);


            let vpid = player.getAttribute('_h5ppid') || null;
            if(!vpid)return;
            var playerConf = playerConfs[vpid]
            if(!playerConf)return;

            //shift + key
            if (keyAsm == SHIFT) {
                // 網頁FULLSCREEN
                if (pCode === 'Enter') {
                    $hs.callFullScreenBtn()
                    return TERMINATE
                } else if (pCode == 'KeyF') {
                    //change unsharpen filter

                    var resList = ["unsharpen3_05", "unsharpen3_10", "unsharpen5_05", "unsharpen5_10", "unsharpen9_05", "unsharpen9_10"]
                    var res = (prompt("Enter the unsharpen mask\n(" + resList.map(x => '"' + x + '"').join(', ') + ")", "unsharpen9_05") || "").toLowerCase();
                    if (resList.indexOf(res) < 0) res = ""
                    GM_setValue("unsharpen_mask", res)
                    for (const el of document.querySelectorAll('video[_h5p_uid_encrypted]')) {
                        if (el.style.filter == "" || el.style.filter) {
                            var filterStr1 = el.style.filter.replace(/\s*url\(\"#_h5p_unsharpen[\d\_]+\"\)/, '');
                            var filterStr2 = (res.length > 0 ? ' url("#_h5p_' + res + '")' : '')
                            el.style.filter = filterStr1 + filterStr2;
                        }
                    }
                    return TERMINATE

                }
                // 進入或退出畫中畫模式
                else if (pCode == 'KeyP') {
                    $hs.pictureInPicture(player)

                    return TERMINATE
                } else if (pCode == 'KeyR') {
                    if (player._h5player_lastrecord_ !== null && (player._h5player_lastrecord_ >= 0 || player._h5player_lastrecord_ <= 0)) {
                        $hs.setPlayProgress(player, player._h5player_lastrecord_)

                        return TERMINATE
                    }

                } else if (pCode == 'KeyO') {
                    var _debug_h5p_logging_ch = false;
                    try {
                        window.localStorage.setItem('_h5_player_sLogging_', 1 - window.localStorage.getItem('_h5_player_sLogging_'))
                        _debug_h5p_logging_ = +window.localStorage.getItem('_h5_player_sLogging_') > 0;
                        _debug_h5p_logging_ch = true;
                    } catch (e) {

                    }
                    consoleLogF('_debug_h5p_logging_', !!_debug_h5p_logging_, 'changed', _debug_h5p_logging_ch)

                    if (_debug_h5p_logging_ch) {

                        return TERMINATE
                    }
                } else if (pCode == 'KeyT') {
                    if (/^blob/i.test(player.currentSrc)) {
                        alert(`The current video is ${player.currentSrc}\nSorry, it cannot be opened in PotPlayer.`);
                    } else {
                        var confirm_res = confirm(`The current video is ${player.currentSrc}\nDo you want to open it in PotPlayer?`);
                        if (confirm_res) window.open('potplayer://' + player.currentSrc, '_blank');
                    }
                    return TERMINATE
                }



                let videoScale = (playerConf.lastVideoScale > 0) ? playerConf.lastVideoScale : 1.0;

                function tipsForVideoScaling(){

                    videoScale = playerConf.lastVideoScale = +videoScale.toFixed(1);
                    player.style.transform = `scale(${videoScale}) translate(${$hs.translate.x}px, ${$hs.translate.y}px)`
                    let tipsMsg = `視頻縮放率：${ +(videoScale * 100).toFixed(2)  }%`
                    if ($hs.translate.x) {
                        tipsMsg += `，水平位移：${$hs.translate.x}px`
                    }
                    if ($hs.translate.y) {
                        tipsMsg += `，垂直位移：${$hs.translate.y}px`
                    }
                    $hs.tips(false);
                    $hs.tips(tipsMsg)


                }

                // 視頻畫面縮放相關事件
               
                switch (pCode) {
                    // shift+X：視頻縮小 -0.1
                    case 'KeyX':
                        videoScale -= 0.1
                        if (videoScale < 0.1) videoScale = 0.1;
                        tipsForVideoScaling();
                    return TERMINATE
                        break
                        // shift+C：視頻放大 +0.1
                    case 'KeyC':
                        videoScale += 0.1
                        if (videoScale > 16) videoScale = 16;
                        tipsForVideoScaling();
                    return TERMINATE
                        break
                        // shift+Z：視頻恢復正常大小
                    case 'KeyZ':
                        videoScale = 1.0
                        $hs.translate = {
                            x: 0,
                            y: 0
                        }
                        tipsForVideoScaling();
                    return TERMINATE
                        break
                    case 'ArrowRight':
                        $hs.translate.x += 10
                        tipsForVideoScaling();
                    return TERMINATE
                        break
                    case 'ArrowLeft':
                        $hs.translate.x -= 10
                        tipsForVideoScaling();
                    return TERMINATE
                        break
                    case 'ArrowUp':
                        $hs.translate.y -= 10
                        tipsForVideoScaling();
                    return TERMINATE
                        break
                    case 'ArrowDown':
                        $hs.translate.y += 10
                        tipsForVideoScaling();
                    return TERMINATE
                        break

                }

            }
            // 防止其它無關組合鍵衝突
            if (!keyAsm) {
                let kControl = null
                let newPBR, oldPBR, nv;
                switch (pCode) {
                    // 方向鍵右→：快進3秒
                    case 'ArrowRight':
                        $hs.tuneCurrentTime($hs.skipStep);
                        return TERMINATE;
                        break;
                        // 方向鍵左←：後退3秒
                    case 'ArrowLeft':
                        $hs.tuneCurrentTime(-$hs.skipStep);
                        return TERMINATE;
                        break;
                        // 方向鍵上↑：音量升高 1%
                    case 'ArrowUp':
                        if ((player.muted && player.volume === 0) && player._volume > 0) {

                            player.muted = false;
                            player.volume = player._volume;
                        } else if (player.muted && (player.volume > 0 || !player._volume)) {
                            player.muted = false;
                        }
                        $hs.tuneVolume(0.01);
                        return TERMINATE;
                        break;
                        // 方向鍵下↓：音量降低 1%
                    case 'ArrowDown':

                        if ((player.muted && player.volume === 0) && player._volume > 0) {

                            player.muted = false;
                            player.volume = player._volume;
                        } else if (player.muted && (player.volume > 0 || !player._volume)) {
                            player.muted = false;
                        }
                        $hs.tuneVolume(-0.01);
                        return TERMINATE;
                        break;
                        // 空格鍵：暫停/播放
                    case 'Space':
                        $hs.switchPlayStatus();
                        return TERMINATE;
                        break;
                        // 按鍵X：減速播放 -0.1
                    case 'KeyX':
                        if (player.playbackRate > 0) {
                            $hs.tips(false);
                            $hs.setPlaybackRate(player.playbackRate - 0.1);
                            return TERMINATE
                        }
                        break;
                        // 按鍵C：加速播放 +0.1
                    case 'KeyC':
                        if (player.playbackRate < 16) {
                            $hs.tips(false);
                            $hs.setPlaybackRate(player.playbackRate + 0.1);
                            return TERMINATE
                        }

                        break;
                        // 按鍵Z：正常速度播放
                    case 'KeyZ':
                        $hs.tips(false);
                        oldPBR = player.playbackRate;
                        if (oldPBR != 1.0) {
                            player._playbackRate_z = oldPBR;
                            newPBR = 1.0;
                        } else if (player._playbackRate_z != 1.0) {
                            newPBR = player._playbackRate_z || 1.0;
                            player._playbackRate_z = 1.0;
                        } else {
                            newPBR = 1.0
                            player._playbackRate_z = 1.0;
                        }
                        $hs.setPlaybackRate(newPBR, 1)
                        return TERMINATE
                        break;
                        // 按鍵F：下一幀
                    case 'KeyF':
                        if (window.location.hostname === 'www.netflix.com') return /* netflix 的F鍵是FULLSCREEN的意思 */
                        $hs.tips(false);
                        if (!player.paused) player.pause()
                        console.log(+(1 / playerConf.fps))
                        player.currentTime += +(1 / playerConf.fps)
                        $hs.tips('Jump to: Next frame')
                        return TERMINATE
                        break;
                        // 按鍵D：上一幀
                    case 'KeyD':
                        $hs.tips(false);
                        if (!player.paused) player.pause()
                        player.currentTime -= +(1 / playerConf.fps)
                        $hs.tips('Jump to: Previous frame')
                        return TERMINATE
                        break;
                        // 按鍵E：亮度增加%
                    case 'KeyE':
                        $hs.tips(false);
                        nv=playerConf.setFilter('brightness',(v)=>v+0.1);
                        $hs.tips('Brightness: ' + dround(nv * 100) + '%')
                        return TERMINATE
                        break;
                        // 按鍵W：亮度減少%
                    case 'KeyW':
                        $hs.tips(false);
                        nv=playerConf.setFilter('brightness',(v)=>v>0.1?v-0.1:0);
                        $hs.tips('Brightness: ' + dround(nv * 100) + '%')
                        return TERMINATE
                        break;
                        // 按鍵T：對比度增加%
                    case 'KeyT':
                        $hs.tips(false);
                        nv=playerConf.setFilter('contrast',(v)=>v+0.1);
                        $hs.tips('Contrast: ' + dround(nv * 100) + '%')
                        return TERMINATE
                        break;
                        // 按鍵R：對比度減少%
                    case 'KeyR':
                        $hs.tips(false);
                        nv=playerConf.setFilter('contrast',(v)=>v>0.1?v-0.1:0);
                        $hs.tips('Contrast: ' + dround(nv * 100) + '%')
                        return TERMINATE
                        break;
                        // 按鍵U：飽和度增加%
                    case 'KeyU':
                        $hs.tips(false);
                        nv=playerConf.setFilter('saturate',(v)=>v+0.1);
                        $hs.tips('Saturate: ' + dround(nv * 100) + '%')
                        return TERMINATE
                        break;
                        // 按鍵Y：飽和度減少%
                    case 'KeyY':
                        $hs.tips(false);
                        nv=playerConf.setFilter('saturate',(v)=>v>0.1?v-0.1:0);
                        $hs.tips('Saturate: ' + dround(nv * 100) + '%')
                        return TERMINATE
                        break;
                        // 按鍵O：色相增加 1 度
                    case 'KeyO':
                        $hs.tips(false);
                        nv=playerConf.setFilter('hue-rotate',(v)=>v+1);
                        $hs.tips('Hue: ' + nv + ' deg')
                        return TERMINATE
                        break;
                        // 按鍵I：色相減少 1 度
                    case 'KeyI':
                        $hs.tips(false);
                        nv=playerConf.setFilter('hue-rotate',(v)=>v-1);
                        $hs.tips('Hue: ' + nv + ' deg')
                        return TERMINATE
                        break;
                        // 按鍵K：模糊增加 0.1 px
                    case 'KeyK':
                        $hs.tips(false);
                        nv=playerConf.setFilter('blur',(v)=>v+0.1);
                        $hs.tips('Blur: ' + nv + ' px')
                        return TERMINATE
                        break;
                        // 按鍵J：模糊減少 0.1 px
                    case 'KeyJ':
                        $hs.tips(false);
                        nv=playerConf.setFilter('blur',(v)=>v>0.1?v-0.1:0);
                        $hs.tips('Blur: ' + nv + ' px')
                        return TERMINATE
                        break;
                        // 按鍵Q：圖像復位
                    case 'KeyQ':
                        $hs.tips(false);
                        playerConf.filterReset();
                        $hs.tips('Video Filter Reset')
                        return TERMINATE
                        break;
                        // 按鍵S：畫面旋轉 90 度
                    case 'KeyS':
                        $hs.tips(false);
                        playerConf.rotate+=90
                        if (playerConf.rotate % 360 === 0) playerConf.rotate = 0;
                        player.style.transform = 'rotate(' + playerConf.rotate + 'deg)'
                        $hs.tips('Rotation：' + playerConf.rotate + ' deg')
                        return TERMINATE
                        break;
                        // 按鍵迴車，進入FULLSCREEN
                    case 'Enter':
                        //t.callFullScreenBtn();
                        break;
                    case 'KeyN':
                        $hs.pictureInPicture(player);
                        return TERMINATE
                        break;
                    case 'KeyM':
                        //console.log('m!', player.volume,player._volume)

                        if (player.volume >= 0) {

                            if (!player.volume || player.muted) {

                                var newVol = player.volume || player._volume || 0.5;
                                if (player.volume !== newVol) {
                                    player.volume = newVol;
                                }
                                player.muted = false;
                                $hs.tips(false);
                                $hs.tips('Mute: Off', undefined);

                            } else {

                                player._volume = player.volume;
                                player._volume_p = player.volume;
                                //player.volume = 0;
                                player.muted = true;
                                $hs.tips(false);
                                $hs.tips('Mute: On', undefined);

                            }

                        }

                        return TERMINATE
                        break;
                    default:
                        // 按1-4設置播放速度 49-52;97-100
                        var numKey = +(event.key)
                        
                        if (numKey>=1 && numKey <=4) {
                            $hs.tips(false);
                            $hs.setPlaybackRate(numKey, 1)
                            return TERMINATE
                        }
                }

            }
        },

        handlerPlayerMouseMove: function(e) {
            let player = $hs.player();
            let rootNode = getRoot(player);

            if (rootNode.pointerLockElement != player) {
                player.removeEventListener('mousemove', $hs.handlerPlayerMouseMove)
                return;
            }

            var movementX = e.movementX || e.mozMovementX || e.webkitMovementX || 0,
                movementY = e.movementY || e.mozMovementY || e.webkitMovementY || 0;

            player.__xyOffset.x += movementX
            player.__xyOffset.y += movementY
            var ld = Math.sqrt(screen.width * screen.width + screen.height * screen.height) * .1
            var md = Math.sqrt(player.__xyOffset.x * player.__xyOffset.x + player.__xyOffset.y * player.__xyOffset.y);
            if (md > ld) $hs.playerActionLeave();

        },

        playerActionEnter: function() {
            let player = $hs.player();

            if (player) {
                player.__requestPointerLock();
                player.__xyOffset = {
                    x: 0,
                    y: 0
                };
                player.addEventListener('mousemove', $hs.handlerPlayerMouseMove)
            }
        },

        playerActionLeave: function() {
            let player = $hs.player();
            if (player) player.removeEventListener('mousemove', $hs.handlerPlayerMouseMove)
            document.__exitPointerLock();
        },

        /* 按鍵響應方法 */
        handlerRootKeyDownEvent: function(event) {
            if ($hs.intVideoInitCount > 0) {} else {
                return;
            }
            // DOM Standard - either .key or .code
            // Here we adopt .code (physical layout)

            let pCode = event.code;
            if(typeof pCode !='string')return;

            let player = $hs.player()

            if (!player) return; // no video tag

            let rootNode = getRoot(player);

            let keyAsm = (event.shiftKey ? SHIFT : 0) | ((event.ctrlKey || event.metaKey) ? CTRL : 0) | (event.altKey ? ALT : 0);

            if (!keyAsm && pCode == 'Escape' && (document.fullscreenElement || rootNode.pointerLockElement)) {
                setTimeout(() => {
                    if (document.fullscreenElement) {
                        document.exitFullscreen();
                    } else if (document.pointerLockElement) {
                        $hs.playerActionLeave();
                    }
                }, 700);
                return;
            }
 
            if (isInOperation(event.target)) return;

            //console.log('K01')

            /* 切換插件的可用狀態 */
            // Shift-`
            if (keyAsm == SHIFT && pCode=='Backquote') {
                $hs.enable = !$hs.enable;
                $hs.tips(false);
                if ($hs.enable) {
                    $hs.tips('啟用h5Player插件')
                } else {
                    $hs.tips('禁用h5Player插件')
                }
                // 阻止事件冒泡
                event.stopPropagation()
                event.preventDefault()
                return false
            }
            if (!$hs.enable) {
                consoleLog('h5Player 已禁用~')
                return false
            }

            /* 非全局模式下，不聚焦則不執行快捷鍵的操作 */

            if (!keyAsm && pCode == 'Enter' && !isInOperation()) {  //not NumberpadEnter
                if (!rootNode.pointerLockElement && !document.fullscreenElement) {
                    if (rootNode.pointerLockElement != player) {
                        $hs.playerActionEnter();

                        // 阻止事件冒泡
                        event.stopPropagation()
                        event.preventDefault()
                        return false
                    }
                } else if (rootNode.pointerLockElement && !document.fullscreenElement) {
                    $hs.playerActionLeave();

                    // 阻止事件冒泡
                    event.stopPropagation()
                    event.preventDefault()
                    return false
                } else if (document.fullscreenElement) {
                    document.exitFullscreen();

                    // 阻止事件冒泡
                    event.stopPropagation()
                    event.preventDefault()
                    return false
                }
            }

            let hv = (elm) => (elm && (elm == player || elm.contains(player)) ? elm : null);

            let _checkingPass;

            let plm = null;
            if (rootNode.activeElement && !rootNode.pointerLockElement && !document.fullscreenElement) {
                // the active element may or may not contains the player
                // but the player box (player->parent->parent->...) shall contains the active element (and the player)
                // so if the active element is inside the layoutbox, okay!
                // ps. layoutbox may be much larger than the activeelement, then it is not overlapping case.

                plm = rootNode.activeElement

                //console.log('activeElement', plm)
                _checkingPass = $hs.isInActiveMode(rootNode.activeElement, player);
            } else {
                plm = hv(rootNode.pointerLockElement) || hv(document.fullscreenElement)
                _checkingPass = !!plm
            }


            if (_checkingPass) {

                if (isInOperation()) return;


                let res = $hs.playerTrigger(player, event)
                if (res == TERMINATE) {
                    event.stopPropagation()
                    event.preventDefault()
                    return false
                }

            }
        },
        /* 設置播放進度 */
        setPlayProgress: function(player, curTime) {
            if (!player) return
            if (!curTime || Number.isNaN(curTime)) return
            player.currentTime = curTime
            if (curTime > 3) {
                $hs.tips(false);
                $hs.tips(`Playback Jumps to ${$hs.toolFormatCT(curTime)}`)
                if (player.paused) player.play();
            }
        }
    }

    function makeFilter(arr, k) {
        var res = ""
        for (const e of arr) {
            for (const d of e) {
                res += " " + (1.0 * d * k).toFixed(9)
            }
        }
        return res.trim()
    }

    function _add_filter(rootElm) {
        var rootView = null;
        if (rootElm && rootElm.nodeType > 0) {
            while (rootElm.parentNode && rootElm.parentNode.nodeType === 1) rootElm = rootElm.parentNode;
            rootView = rootElm.querySelector('body') || rootElm;
        } else {
            return;
        }

        if (rootView && rootView.querySelector && !rootView.querySelector('#_h5player_section_')) {

            let svgFilterElm = document.createElement('section')
            svgFilterElm.style.position = 'fixed';
            svgFilterElm.style.left = '-999px';
            svgFilterElm.style.width = '1px';
            svgFilterElm.style.top = '-999px';
            svgFilterElm.style.height = '1px';
            svgFilterElm.id = '_h5player_section_'
            var svgXML = `
                <svg id='_h5p_image' version="1.1" xmlns="http://www.w3.org/2000/svg">
                <defs>
                <filter id="_h5p_sharpen1">
                <feConvolveMatrix filterRes="100 100" style="color-interpolation-filters:sRGB" order="3" kernelMatrix="` + `
                -0.3 -0.3 -0.3
                -0.3 3.4 -0.3
                -0.3 -0.3 -0.3`.replace(/[\n\r]+/g, '  ').trim() + `"  preserveAlpha="true"/>
                </filter>
                <filter id="_h5p_unsharpen1">
                <feConvolveMatrix style="color-interpolation-filters:sRGB;color-interpolation: sRGB;" order="5" kernelMatrix="` +
                makeFilter([
                    [1, 4, 6, 4, 1],
                    [4, 16, 24, 16, 4],
                    [6, 24, -476, 24, 6],
                    [4, 16, 24, 16, 4],
                    [1, 4, 6, 4, 1]
                ], -1 / 256) + `"  preserveAlpha="false"/>
                </filter>
                <filter id="_h5p_unsharpen3_05">
                <feConvolveMatrix style="color-interpolation-filters:sRGB;color-interpolation: sRGB;" order="3" kernelMatrix="` +
                makeFilter(
                    [
                        [0.025, 0.05, 0.025],
                        [0.05, -1.1, 0.05],
                        [0.025, 0.05, 0.025]
                    ], -1 / .8) + `"  preserveAlpha="false"/>
                </filter>
                <filter id="_h5p_unsharpen3_10">
                <feConvolveMatrix style="color-interpolation-filters:sRGB;color-interpolation: sRGB;" order="3" kernelMatrix="` +
                makeFilter(
                    [
                        [0.05, 0.1, 0.05],
                        [0.1, -1.4, 0.1],
                        [0.05, 0.1, 0.05]
                    ], -1 / .8) + `"  preserveAlpha="false"/>
                </filter>
                <filter id="_h5p_unsharpen5_05">
                <feConvolveMatrix style="color-interpolation-filters:sRGB;color-interpolation: sRGB;" order="5" kernelMatrix="` +
                makeFilter(
                    [
                        [0.025, 0.1, 0.15, 0.1, 0.025],
                        [0.1, 0.4, 0.6, 0.4, 0.1],
                        [0.15, 0.6, -18.3, 0.6, 0.15],
                        [0.1, 0.4, 0.6, 0.4, 0.1],
                        [0.025, 0.1, 0.15, 0.1, 0.025]
                    ], -1 / 12.8) + `"  preserveAlpha="false"/>
                </filter>
                <filter id="_h5p_unsharpen5_10">
                <feConvolveMatrix style="color-interpolation-filters:sRGB;color-interpolation: sRGB;" order="5" kernelMatrix="` +
                makeFilter(
                    [
                        [0.05, 0.2, 0.3, 0.2, 0.05],
                        [0.2, 0.8, 1.2, 0.8, 0.2],
                        [0.3, 1.2, -23.8, 1.2, 0.3],
                        [0.2, 0.8, 1.2, 0.8, 0.2],
                        [0.05, 0.2, 0.3, 0.2, 0.05]
                    ], -1 / 12.8) + `"  preserveAlpha="false"/>
                </filter>
                <filter id="_h5p_unsharpen9_05">
                <feConvolveMatrix style="color-interpolation-filters:sRGB;color-interpolation: sRGB;" order="9" kernelMatrix="` +
                makeFilter(
                    [
                        [0.025, 0.2, 0.7, 1.4, 1.75, 1.4, 0.7, 0.2, 0.025],
                        [0.2, 1.6, 5.6, 11.2, 14, 11.2, 5.6, 1.6, 0.2],
                        [0.7, 5.6, 19.6, 39.2, 49, 39.2, 19.6, 5.6, 0.7],
                        [1.4, 11.2, 39.2, 78.4, 98, 78.4, 39.2, 11.2, 1.4],
                        [1.75, 14, 49, 98, -4792.7, 98, 49, 14, 1.75],
                        [1.4, 11.2, 39.2, 78.4, 98, 78.4, 39.2, 11.2, 1.4],
                        [0.7, 5.6, 19.6, 39.2, 49, 39.2, 19.6, 5.6, 0.7],
                        [0.2, 1.6, 5.6, 11.2, 14, 11.2, 5.6, 1.6, 0.2],
                        [0.025, 0.2, 0.7, 1.4, 1.75, 1.4, 0.7, 0.2, 0.025]
                    ], -1 / 3276.8) + `"  preserveAlpha="false"/>
                </filter>
                <filter id="_h5p_unsharpen9_10">
                <feConvolveMatrix style="color-interpolation-filters:sRGB;color-interpolation: sRGB;" order="9" kernelMatrix="` +
                makeFilter(
                    [
                        [0.05, 0.4, 1.4, 2.8, 3.5, 2.8, 1.4, 0.4, 0.05],
                        [0.4, 3.2, 11.2, 22.4, 28, 22.4, 11.2, 3.2, 0.4],
                        [1.4, 11.2, 39.2, 78.4, 98, 78.4, 39.2, 11.2, 1.4],
                        [2.8, 22.4, 78.4, 156.8, 196, 156.8, 78.4, 22.4, 2.8],
                        [3.5, 28, 98, 196, -6308.6, 196, 98, 28, 3.5],
                        [2.8, 22.4, 78.4, 156.8, 196, 156.8, 78.4, 22.4, 2.8],
                        [1.4, 11.2, 39.2, 78.4, 98, 78.4, 39.2, 11.2, 1.4],
                        [0.4, 3.2, 11.2, 22.4, 28, 22.4, 11.2, 3.2, 0.4],
                        [0.05, 0.4, 1.4, 2.8, 3.5, 2.8, 1.4, 0.4, 0.05]
                    ], -1 / 3276.8) + `"  preserveAlpha="false"/>
                    </filter>
                    <filter id="_h5p_grey1">
                    <feColorMatrix values="0.3333 0.3333 0.3333 0 0
                    0.3333 0.3333 0.3333 0 0
                    0.3333 0.3333 0.3333 0 0
                    0      0      0      1 0"/>
                    <feColorMatrix type="saturate" values="0" />
                    </filter>
                    </defs>
                    </svg>
                    `;

            svgFilterElm.innerHTML = svgXML.replace(/[\r\n\s]+/g, ' ').trim();

            rootView.appendChild(svgFilterElm);
        }

    }

    /**
     * 某些網頁用了attachShadow closed mode，需要open才能獲取video標籤，例如百度雲盤
     * 解決參考：
     * https://developers.google.com/web/fundamentals/web-components/shadowdom?hl=zh-cn#closed
     * https://stackoverflow.com/questions/54954383/override-element-prototype-attachshadow-using-chrome-extension
     */

    const initForShadowRoot = async (shadowRoot) => {
        try {
            if (shadowRoot && shadowRoot.nodeType > 0 && 'querySelectorAll' in shadowRoot) {
                $hs.bindDocEvents(shadowRoot);
                new VideoListener(shadowRoot).listen(handlerVideoFound)
                shadowRoots.push(shadowRoot)
            }
        } catch (e) {
            console.log('h5Player: initForShadowRoot failed')
        }
    }

    function hackAttachShadow() { // attachShadow - DOM Standard

        var _prototype_ = window && window.HTMLElement ? window.HTMLElement.prototype : null;
        if (_prototype_ && typeof _prototype_.attachShadow == 'function') {

            var _attachShadow = _prototype_.attachShadow

            hackAttachShadow = null
            _prototype_.attachShadow = function() {
                let arg = [...arguments];
                if (arg[0] && arg[0].mode) arg[0].mode = 'open';
                let shadowRoot = _attachShadow.apply(this, arg);
                initForShadowRoot(shadowRoot);
                return shadowRoot
            }

        }

    }

    function hackCreateShadowRoot() { // createShadowRoot - Deprecated

        var _prototype_ = window && window.HTMLElement ? window.HTMLElement.prototype : null;
        if (_prototype_ && typeof _prototype_.createShadowRoot == 'function') {

            var _createShadowRoot = _prototype_.createShadowRoot;

            hackCreateShadowRoot = null
            _prototype_.createShadowRoot = function() {
                const shadowRoot = _createShadowRoot.apply(this, arguments);
                initForShadowRoot(shadowRoot);
                return shadowRoot;
            }

        }
    }

    /* 事件偵聽hack */
    function hackEventListener() {
        if (!window.EventTarget) return;
        const eventTargetPrototype = window.EventTarget.prototype;
        var _addEventListener = eventTargetPrototype.addEventListener;
        var _removeEventListener = eventTargetPrototype.removeEventListener;
        if (typeof _addEventListener == 'function' && typeof _removeEventListener == 'function') {} else return;
        hackEventListener = null;

        class Listeners {

            constructor(dom, type) {
                this._dom = dom;
                this._type = type;
                this.listenersCount = 0;
                this.hashList = {};
            }
            get baseFunc() {
                if (this._dom && this._type) {
                    return this._dom['on' + this._type];
                }
            }
            get funcCount() {
                if (this._dom && this._type) {
                    return (typeof this.baseFunc == 'function') * 1 + (this.listenersCount || 0)
                }
            }


        }



        var hackedEvtCount = 0;


        function timeupdateHack(evtTarget, args) {
            consoleLog('timeupdate detected')
            if (!evtTarget._onceTimeUpdateHack) {
                evtTarget._onceTimeUpdateHack = true;
                if (!_endlessloop) _endlessloop = new EndlessLoop();
                let opts = _endlessloop.append(handle.timeupdatef_ell)
                opts.video = evtTarget;
                opts.lastTime = -1;
                opts.evt = new SimEvent("timeupdatef", {
                    bubbles: false,
                    cancelable: true,
                }, 'timeupdate');
                opts.loopingStart();
                _ell_timeupdatefs.push(opts);
            }
            args[0] = 'timeupdatef';
            args[1] = sim_arg_1_fn(args[1], _evtOB_create._timeupdate())
            _addEventListener.apply(evtTarget, args)
            consoleLog('timeupdate(fast) is added with listener', fn_toString(listener))
        }

        eventTargetPrototype.addEventListener = function() {
            if (!this || !(this instanceof EventTarget)) {
                return _addEventListener.apply(this, arguments)
                //unknown bug?
            }

            let arg = arguments
            let type = arg[0]
            let listener = arg[1]
            let boolCapture = !!((arg[2] && typeof arg[2] == 'object') ? arg[2].capture : arg[2])
            let sim_arg = null;
            if (type == 'timeupdate' && this.nodeType == 1 && this.nodeName == "VIDEO" && 0) {
                timeupdateHack(this, [...arg])
            } else {
                _addEventListener.apply(this, arg)
            }

            this._listeners = this._listeners || {}
            this._listeners[type] = this._listeners[type] || new Listeners(this, type)
            let uid = 100000 + (++hackedEvtCount);
            let listenerObj = {
                listener,
                options: arg[2],
                uid: uid,
                useCapture: boolCapture,
                sim_arg
            }
            this._listeners[type].hashList[uid + ''] = listenerObj;
            this._listeners[type].listenersCount++;
        }
        // hack removeEventListener
        eventTargetPrototype.removeEventListener = function() {
            if (!this || !(this instanceof EventTarget)) {
                return _removeEventListener.apply(this, arguments)
                //unknown bug?
            }

            let arg = arguments
            let type = arg[0]
            let listener = arg[1]

            let boolCapture = !!((arg[2] && typeof arg[2] == 'object') ? arg[2].capture : arg[2])

            let defaultRemoval = true;
            if (this._listeners && this._listeners[type] && this._listeners[type].hashList) {
                let hashList = this._listeners[type].hashList
                for (let k in hashList) {
                    if (hashList[k].listener === listener && hashList[k].useCapture == boolCapture) {
                        if (hashList[k].sim_arg) {
                            defaultRemoval = false;
                            _removeEventListener.apply(this, hashList[k].sim_arg.slice(0, 3));
                        }
                        delete hashList[k];
                        this._listeners[type].listenersCount--;
                        break;
                    }
                }
            }
            if (defaultRemoval) _removeEventListener.apply(this, arg);
        }
    }

    function handlerVideoFound(video) {

        if (!video) return;
        if (video.getAttribute('_h5ppid')) return;
        var alabel = video.getAttribute('aria-label')
        if (alabel && typeof alabel == "string" && alabel.toUpperCase() == "GIF") return;


        consoleLog('handlerVideoFound', video)
        var vpid='h5p-' + $hs.intVideoInitCount

        $hs.intVideoInitCount = ($hs.intVideoInitCount || 0) + 1;
        consoleLog(' - HTML5 Video is detected -', `Number of Videos: ${$hs.intVideoInitCount}`)
        if ($hs.intVideoInitCount === 1) $hs.fireGlobalInit();
        video.setAttribute('_h5ppid', vpid)

        
        playerConfs[vpid]=new PlayerConf();

        let rootNode = getRoot(video);
        
        if (rootNode.host) $hs.getPlayerBlockElement(video);
        let rootElm = rootNode.querySelector('head') || rootNode.querySelector('html') || document.documentElement //48763
        _add_filter(rootElm)

        video.addEventListener('loadedmetadata', $hs.handlerVideoLoadedMetaData, true);

    }


    ResizeODM.__init__();

    hackAttachShadow()
    hackCreateShadowRoot()
    hackEventListener()


    window.addEventListener('message', $hs.handlerWinMessage, false);
    $hs.bindDocEvents(document);
    new VideoListener(document.documentElement).listen(handlerVideoFound)

    var windowsLD = (function() {
        let ls_res = [];
        try {
            ls_res = [!!window.localStorage, !!window.top.localStorage];
        } catch (e) {}
        try {
            let winp = window;
            let winc = 0;
            while (winp !== window.top && winp && ++winc) winp = winp.parentNode;
            ls_res.push(winc);
        } catch (e) {}
        return ls_res;
    })();

    consoleLogF('- h5Player Plugin Loaded -', ...windowsLD)

    function isInCrossOriginFrame() {
        let result = true;
        try {
            if (window.top.localStorage || window.top.location.href) result = false;
        } catch (e) {}
        return result
    }

    if (isInCrossOriginFrame()) consoleLog('cross origin frame detected');


})(null);