MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

/* Finds elements by a selector and executes a function for each element */
function findAndExecute(selector, callback) {
    const elements = document.querySelectorAll(selector);
    elements.forEach((element) => {
        try {
            callback(element);
        } catch (e) {
            console.error(`Error while initializing "${selector}"`, e);
        }
    });
}

/* tabindex="-1" is not allowed by MediaWiki, this is a workaround */
findAndExecute(".rgwiki-main-negative-tabindex", (element) => {
    element.tabIndex = -1;
});

/* Links without href/links to "javascript:void(0)" are not allowed by MediaWiki, this is a workaround */
/* Use Template:EmptyLink to activate this piece of code. */
findAndExecute(".rgwiki-main-emptylink", (span) => {
  const a = span.querySelector("a");
  for (const className of span.classList) {
    if (className !== "rgwiki-main-emptylink") {
      a.classList.add(className);
    }
  }
  a.href = "javascript:void(0)";
  const parent = span.parentNode;
  parent.replaceChild(a, span);
});

/* Localized date */
findAndExecute(".rgwiki-main-date-localized", (span) => {
    const inputDateString = span.dataset.datetime !== undefined ? span.dataset.datetime : span.textContent;
    const date = new Date(inputDateString);
    const outputDateString = date.toString();
    span.title = `This date in your timezone: ${outputDateString}`;
});

/* OS tabs */
findAndExecute(".tabber.rgwiki-main-os-tabber", (tabber) => {
    const osString = (window.navigator.oscpu || window.navigator.platform || window.navigator.userAgent).toLowerCase();
    let userOs = null;
    if (osString.includes("linux")) userOs = "linux";
    if (osString.includes("mac")) userOs = "mac";
    if (osString.includes("win")) userOs = "win";

    const oldAnchor = window.location.hash;
    tabber.querySelectorAll(".tabber__header > .tabber__tabs > a.tabber__tab").forEach(tab => {
        const tabName = tab.textContent.toLowerCase();
        if (userOs === "linux" && tabName.includes("linux")) tab.click();
        if (userOs === "mac" && tabName.includes("macos")) tab.click();
        if (userOs === "win" && tabName.includes("windows")) tab.click();
    });
    setTimeout(() => {
        window.location.hash = oldAnchor;
    }, 100);
});