hubl/src/scripts/firefox-scroll.js

document.addEventListener("DOMContentLoaded", () => {
  const resizeChat = () => {
    let isMobile = window.innerHeight < 993;
    let chatBox = Array.from(document.querySelectorAll("solid-xmpp-chat"))
      .map((el) => el.shadowRoot ? el.shadowRoot.getElementById("conversejs") : false)
      .filter((el) => el)
      .pop();
    if (chatBox) {
      let chatTextArea = chatBox.querySelector(".message-form-container");
      let ischatTextArea = setInterval(() => {
        chatTextArea = chatBox.querySelector(".message-form-container");
        if (chatTextArea) {
          clearInterval(ischatTextArea);
          if (
            chatBox.getBoundingClientRect().height -
            chatTextArea.getBoundingClientRect().height !=
            chatTextArea.offsetTop
          ) {
            let viewportChat = Array.from(
              document.querySelectorAll("#viewport .chat-view")
            );
            let headerOffset = document.querySelector('#header').offsetHeight;
            let intermediateOffset = Array.from(document.querySelectorAll(".content-box__header")).filter(el=>el.offsetParent!==null?el:null)[0].offsetHeight;
            viewportChat.forEach(
              (c) => (c.style.height = isMobile ? "calc(100vh - "+String(headerOffset+intermediateOffset)+"px - 57px)" : "calc(100vh - "+String(headerOffset+intermediateOffset)+"px)")
            );
          }
        }
      }, 15);
    }
  };
  resizeChat();

  let isbody = setInterval(() => {
    if (document.body) {
      clearInterval(isbody);
      resizeChat();
    }
  }, 50);

  window.addEventListener("load", () => {
    setTimeout(() => {
      resizeChat();
    }, 0);
  });

  let windowResizing;
  window.addEventListener("resize", () => {
    windowResizing = setTimeout(() => {
      clearInterval(windowResizing);
      resizeChat();
    }, 50);
  });

  document.addEventListener("navigate", () => {
    setTimeout(() => {
      resizeChat();
    }, 0);
  });
});