hiro/riot-katex
1
0
Fork 0
mirror of https://github.com/vale981/riot-katex synced 2025-03-04 08:41:39 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

add some documentation comments

Browse source
This commit is contained in:
Valentin Boettcher 2020-04-09 16:46:59 +02:00
parent 9ce5352c6c
commit 0be4d433e9
1 changed files with 17 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
riot-katex.js
View file

@ -9,20 +9,24 @@
}
window.hasRun = true;
/**
* Set up math delimiters.
*/
const math_config = [
{left: "$$", right: "$$", display: true},
{left: "\\(", right: "\\)", display: false},
{left: "\\[", right: "\\]", display: true}
]
/**
* Initialize Extension as soon as matrix has been loaded.
*/
function init() {
const header = document.querySelector('.mx_RoomList');
let chat_observer = listen_on_chat_element();
// render with KaTeX as soon as the message appears
function listen_on_chat_element() {
const chat_elem = document.querySelector('.mx_RoomView_MessageList');
renderMathInElement(chat_elem, math_config);
const config = { attributes: true, childList: true, subtree: true };
const callback = function(mutationsList, observer) {
// Use traditional 'for loops' for IE 11
for(let mutation of mutationsList) {
@ -33,14 +37,13 @@
}
}
};
// Create an observer instance linked to the callback function
const observer = new MutationObserver(callback);
// Start observing the target node for configured mutations
observer.observe(chat_elem, config);
const observer = new MutationObserver(callback);
observer.observe(chat_elem, { attributes: true, childList: true, subtree: true });
return observer;
}
// when changing the chat room, we have to create a new listener
function change_chat_element(mutationsList, observer) {
if (chat_observer) {
chat_observer.disconnect();
@ -49,13 +52,16 @@
chat_observer = listen_on_chat_element();
}
// start listening
let chat_observer = listen_on_chat_element();
// start listening on the header as well
const header = document.querySelector('.mx_RoomList');
const header_obs = new MutationObserver(change_chat_element)
const config = { attributes: true, childList: true, subtree: true };
header_obs.observe(header, config);
header_obs.observe(header, { attributes: true, childList: true, subtree: true });
}
let = window.wrappedJSObject;
// a clever hack to check if riot has been loaded yet
function wait_for_matrix() {
if(!('matrixChat' in window.wrappedJSObject
&& window.wrappedJSObject.matrixChat.firstSyncComplete))