Wikipedia Multi-Column Layout

Apply multi-column layout to Wikipedia with CSS3.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

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.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @version      1.0.1
// @name         Wikipedia Multi-Column Layout
// @description  Apply multi-column layout to Wikipedia with CSS3.
// @author       Xoihazard
// @license      MIT
// @namespace    https://github.com/xoihazard/wikipedia-multicolumn
// @match        *://*.wikipedia.org/wiki/*
// @run-at       document-idle
// @grant        GM_addStyle
// ==/UserScript==

GM_addStyle(`
div.multicolumn-layout {
  margin-top: 1rem;
  margin-bottom: 1rem;
  column-width: 25rem;
  column-gap: 2rem;
  column-rule: 1px solid lightgray;
}

div.multicolumn-layout.break {
  padding-bottom: 1rem;
  border-bottom: 1px dashed lightgray;
}

div.multicolumn-layout * {
  max-width: 100% !important;
}

div.multicolumn-layout img {
  max-width: 100% !important;
  height: auto !important;
}
`);

{
  const exclude = [
    "h2",
    "div.toc",
    "div.dablink",
    "div.pathnavbox",
    "div.navbox",
    "table.ambox:not(.mbox-small-left)",
    "table.infobox",
    "table.wikitable",
    "table.navbox",
  ].join(", ");

  class Row {
    constructor() {
      this.isEmpty = true;
      this.rows = [];
      this.addRow();
    }

    addRow() {
      this.row = document.createElement("div");
      this.row.classList.add("multicolumn-layout");
      this.rows.push(this.row);
    }

    append(node) {
      this.mount(node);
      if (this.row.clientHeight > window.innerHeight * 0.75) {
        this.addRow();
      }
      this.row.append(node);
      this.isEmpty = false;
    }

    mount(nextNode) {
      if (!document.body.contains(this.row)) {
        nextNode.parentNode.insertBefore(this.row, nextNode);
      }
    }

    close() {
      this.rows.forEach((row, index) => {
        if (index < this.rows.length - 1) {
          row.classList.add("break");
        }
      });
    }
  }

  let row = new Row();

  const nodes = document.querySelector(".mw-parser-output").childNodes;

  [...nodes].forEach((node) => {
    if (node.nodeType === Node.ELEMENT_NODE) {
      if (!node.matches(exclude)) {
        row.append(node);
      } else if (!row.isEmpty) {
        row.close();
        row = new Row();
      }
    }
  });
}