Provides jump buttons to the next lesson for leveling up (based on minirock / oltodosel autoScroller).
目前为
// ==UserScript==
// @name Duolingo LevelJumper
// @description Provides jump buttons to the next lesson for leveling up (based on minirock / oltodosel autoScroller).
// @version 2.9
// @namespace esh
// @match https://*.duolingo.com/*
// ==/UserScript==
// 2.3: find a better solution to move to the first lesson of this level
// 2.4: take into concern if there are different levels in one row
// 2.4: better jumpMark more satisfying
// 2.5: set jumpMark to the crown-div, so it moves the old lessons out of view
// 2.5: jumpMark for Crown 3 does not work????
// 2.6: fix if jumpMark is the very first lesson
// 2.7: should work now without plus button
// 2.8: auto-scroll if you want, set it below at const AUTO_SCROLL
// 2.8.1: what happens, if some crowns do not exist, E.g. lessons level 4 and lessons level 2, but no lessons level 3 available
// I suppose it's just set to the lower level, in this example level 2.
// yeah, of course it broke the script ... but not any longer
// 2.9: changed from selecting the last element from the previous level to the first element from the first level and got rid of having maxed out lessons in view
// TODO: clean up the code, move selectors to constants
// ok, I had a flash of genius ... I just could match the very first lesson of a level and go up one row for the jump target.
// don't know for sure, well maybe because level 0 is not matchable with the given class.
// Well if nothing works any more I do a rewrite, but for now, it works good enough not to spend any more time with it ;)
// ok genius! if you start with the first element you have to sort out all the lessons which do not level until level 5
// not worth the time
// TODO: fix bug clickable before jumpMark ready
// I don't know why it happens and I don't know what to do against
// great, it happens, when you reload a page with a target in the url, so it's mostly a developer problem nothing more
// TODO: highlight lesson by mouseover / mousein / pointerin / focus event
// elem.dispatchEvent(event)
// this is the 20 % which take me 80 % of the time
// could be silly thinking as I got a proper positioning in 2.5
// false or level to go to
// E.g. if you want to bring every lesson to level 2
// AUTO_SCROLL = 2
// options: false, 0, 1, 2, 3, 4
const AUTO_SCROLL = false;
new MutationObserver(checkJumpMark).observe(document.body, {
childList: true,
subtree: true
});
window.onload = function () {
//let lessons = document.querySelectorAll('img[src="//d35aaqx5ub95lt.cloudfront.net/images/b3ede3d53c932ee30d981064671c8032.svg"]');
//lessons[lessons.length-1].scrollIntoView();
//document.body.addEventListener('pageshow', addJumpMarks());
//addJumpMarks();
};
function checkJumpMark() {
if (document.querySelectorAll('.GkDDe').length!=0) {
if (document.querySelector('#jumpMark')===null) {
if (document.querySelector('._3yqw1')!=null) addJumpMarks();
}
}
}
function getAnchorElement(elem) {
// if the element is the first in the tree
if (elem[0] === document.querySelector('[data-test="skill-tree"]').querySelector('[alt="crown"]')) {
return elem[0];
} else if (elem[0] === undefined) {
return null;
} else {
// first lesson element
let lesson = elem[0].parentNode.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode;
let row = lesson.parentNode.previousSibling;
// sometimes the previous row is a divider
if (!row.querySelector('[alt="crown"]')) {
row = row.previousSibling;
}
// select the crown image as anchor element
return row.querySelector('[alt="crown"]');
}
}
function addJumpMarks() {
let level0 = document.querySelectorAll('img[src="//d35aaqx5ub95lt.cloudfront.net/images/fafe27c9c1efa486f49f87a3d691a66e.svg"]');
let firstLesson = document.querySelector('[data-test="skill-tree"]').querySelector('[alt="crown"]');
let level = document.querySelectorAll('[data-test="level-crown"]');
let level1 = [];
let level2 = [];
let level3 = [];
let level4 = [];
let level5 = [];
let levelMissing = [];
for (let i=0;i<level.length;i++) {
switch(level[i].innerHTML) {
case '1':
isMaxedOut(level[i]) ? '' : level1.push(level[i].previousSibling);
break;
case '2':
isMaxedOut(level[i]) ? '' : level2.push(level[i].previousSibling);
break;
case '3':
isMaxedOut(level[i]) ? '' : level3.push(level[i].previousSibling);
break;
case '4':
isMaxedOut(level[i]) ? '' : level4.push(level[i].previousSibling);
break;
case '5':
// for what
//level5.push(level[i]);
break;
}
}
/* levelMissing = [null, level1.length, level2.length, level3.length, level4.length, level5.length];
// if some level inbetween is missing
// E.g. level 3 is missing and we need it to anchor the first level 2
// so we replace level 3 with level 4
if (level5.length === 0) level5[0] = null;
if (level4.length === 0) level4 = level5;
if (level3.length === 0) level3 = level4;
if (level2.length === 0) level2 = level3;
if (level1.length === 0) level1 = level2;
// the last element of the higher level is used to anchor the level below
// E.g. First level 4 = last level 5
// if it doesn't exist, we have to the first element of the level below
if(level5[0] === null && level4[0] !== null) level5[0] = level4[0];
if(level4[0] === null && level3[0] !== null) level4[0] = level3[0];
if(level3[0] === null && level2[0] !== null) level3[0] = level2[0];
if(level2[0] === null && level1[0] !== null) level2[0] = level1[0];
// freaky selecting the previous row
*/
// level1 is the anchor element for new lessons
let anchor0 = null;
if(level0[0] !== null) anchor0 = getAnchorElement(level0);
// level2 is the anchor element for level 1 lessons
let anchor1 = null;
if(level1[0] !== null) anchor1 = getAnchorElement(level1);
// level3 is the anchor element for level 2 lessons
let anchor2 = null;
if(level2[0] !== null) anchor2 = getAnchorElement(level2);
// level4 is the anchor element for level 3 lessons
let anchor3 = null;
if(level3[0] !== null) anchor3 = getAnchorElement(level3);
// level5 is the anchor element for level 4 lessons
let anchor4 = null;
if(level4[0] !== null) anchor4 = getAnchorElement(level4);
// _3NYLT instead of _3yqw1 (plus button)
let insertElement = document.querySelector('._3NYLT');
let jumpMark = document.createElement('div');
jumpMark.setAttribute('class','_3yqw1 np6Tv');
jumpMark.setAttribute('style','padding-top: 0.6rem; padding-right: 0.6rem; top: 148px;');
jumpMark.innerHTML = '<div id="jumpMark"/>';
insertElement.insertAdjacentElement('beforebegin',jumpMark);
console.group('Not overriding double id tags');
if(anchor0 !== null) {
// last level 1 element get the id = level0 for jumping to new lessons
let id = 'level0';
anchor0.id = id;
anchor0 === firstLesson? id = 'javascript:scroll(0,0);' : id = '#'+id;
jumpMark.innerHTML += /* `<a href="#notDone"><img src="//d35aaqx5ub95lt.cloudfront.net/images/fafe27c9c1efa486f49f87a3d691a66e.svg"/></a> */
`<div class="_2-dXY _1swBH" style="font-size: 14.84px;">
<a href="${id}">
<img alt="crown" class="_18sNN" src="//d35aaqx5ub95lt.cloudfront.net/images/fafe27c9c1efa486f49f87a3d691a66e.svg">
</a>
</div>`;
}
// jumpMarks only if there are corresponding levels
if (anchor1 !== null) jumpMark.innerHTML += prepareJumpMark(anchor1, 1, firstLesson);
if (anchor2 !== null) jumpMark.innerHTML += prepareJumpMark(anchor2, 2, firstLesson);
if (anchor3 !== null) jumpMark.innerHTML += prepareJumpMark(anchor3, 3, firstLesson);
if (anchor4 !== null) jumpMark.innerHTML += prepareJumpMark(anchor4, 4, firstLesson);
console.groupEnd();
// beforebegin instead of afterend plus button
//insertElement.insertAdjacentElement('beforebegin',jumpMark);
if (AUTO_SCROLL) document.getElementById('level' + AUTO_SCROLL).scrollIntoView();
}
// returns true if element has the highest level
function isMaxedOut(element) {
// TODO move to constant
if (element.parentNode.parentNode.parentNode.querySelector('[href="//d35aaqx5ub95lt.cloudfront.net/images/9dc5f133240809ea530649bca27c7eca.svg"]')) {
//console.debug(element);
return true;
} else { return false; }
}
function prepareJumpMark(anchor, number, firstLesson) {
let innerHTML = '';
if(anchor !== null) {
// show the first level 'number' lesson
let id = 'level' + number;
// if there have two level the same jump mark, it uses the given one instead of overriding it
if(anchor.id !== '') {
console.info('Id already exists');
console.info(anchor.id);
id = anchor.id;
} else {
anchor.id = id;
}
anchor === firstLesson? id = 'javascript:scroll(0,0);' : id = '#'+id;
innerHTML =
`<div class="_2-dXY _1swBH" style="font-size: 14.84px;">
<a href="${id}">
<img alt="crown" class="_18sNN" src="//d35aaqx5ub95lt.cloudfront.net/images/b3ede3d53c932ee30d981064671c8032.svg">
<div class="GkDDe" data-test="level-crown">${number}</div>
</a>
</div>`;
}
return innerHTML;
}