learnwitholiver

Flashcards

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey, το Greasemonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

You will need to install an extension such as Tampermonkey to install this script.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Userscripts για να εγκαταστήσετε αυτόν τον κώδικα.

You will need to install an extension such as Tampermonkey to install this script.

Θα χρειαστεί να εγκαταστήσετε μια επέκταση διαχείρισης κώδικα χρήστη για να εγκαταστήσετε αυτόν τον κώδικα.

(Έχω ήδη έναν διαχειριστή κώδικα χρήστη, επιτρέψτε μου να τον εγκαταστήσω!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Έχω ήδη έναν διαχειριστή στυλ χρήστη, επιτρέψτε μου να τον εγκαταστήσω!)

// ==UserScript==
// @name         learnwitholiver
// @namespace    http://tampermonkey.net/
// @version      0.1.1
// @description  Flashcards
// @author       Feng Ya
// @match        https://www.learnwitholiver.com/*
// @grant        GM_addStyle
// ==/UserScript==

(function() {
  'use strict';

  // Your code here...

  GM_addStyle(`
  #dashboard {
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    position: fixed;
    padding-top: 100px;
    background: white;
  }
  #dashboard > div {
    padding: 20px;
    margin: 0 auto;
    max-width: 600px;
    font-size: 36px;
    text-align: center;
  }
  #dashboard > div.index {
    font-size: 12px;
  }
  .cloze {
    background: rgba(255, 242, 51, 0.298);
  }
  .mask {
    color: black;
    background: black;
  }
  `);

  console.log(window.location);

  const storage = window.localStorage;
  const pathname = window.location.pathname;

  let current = parseInt(storage.getItem(pathname), 10) || 0;
  console.log(current);

  const dashboard = document.createElement('div');
  dashboard.id = 'dashboard';
  dashboard.style.display = 'none';
  document.body.appendChild(dashboard);

  if (pathname === '/german/show-sentences-print.php') {
    const trs = document.querySelectorAll('table table tr');

    trs.forEach((tr, index) =>
      tr.addEventListener('click', event => {
        current = index;
        show();
      })
    );

    let display = false;

    document.body.addEventListener('keydown', event => {
      // console.log(event.key);
      if (event.altKey || event.ctrlKey || event.metaKey || event.shiftKey)
        return;

      event.preventDefault();

      switch (event.key) {
        case 'x':
          display = !display;
          if (display) show();
          else hide();
          break;
        case 'n':
        case 'j':
          next();
          break;
        case 'p':
        case 'k':
          prev();
          break;
        case ' ':
          toggle();
          break;
      }
    });

    function show() {
      current = normalize(current, trs.length);
      storage.setItem(pathname, current);
      const tr = trs[current];

      const [front, back] = Array.from(tr.children).map(node => node.innerText);

      dashboard.style.display = '';
      dashboard.innerHTML = `
      <div class='cloze mask'>${front}</div>
      <div>${back}</div>
      <div class='index'>${current + 1}/${trs.length}</div>
      `;
    }

    function hide() {
      dashboard.style.display = 'none';
      dashboard.innerHTML = '';
    }

    function prev() {
      current = current - 1;
      show();
    }

    function next() {
      current = current + 1;
      show();
    }

    function toggle() {
      document.querySelectorAll('.cloze').forEach(cloze => {
        cloze.classList.toggle('mask');
      });
    }
  }

  function normalize(index, len) {
    if (index >= len) return index % len;
    if (index < 0) return index % len + len;
    return index;
  }
})();