Userscript to add Ctrl+C keyboard shortcut for Forward-PDF-Search in Overleaf.

overleaf-forward-pdf-shortcut.js

// ==UserScript==
// @name         Overleaf - Forward-PDF
// @description  Add Ctrl+C keyboard shortcut for Forward-PDF-Search.
// @version      2024.12.26
// @author       m4lvin
// @match        https://www.overleaf.com/project/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    window.addEventListener("UNSTABLE_editor:extensions", (event) => {
        const { CodeMirror, extensions } = event.detail;
        //console.log("user script activating");
        //console.log(event);
        //console.log(CodeMirror);
    document.onkeydown = function(e){
            if(e.ctrlKey && e.keyCode==67) { // ctrl + c
                // console.log(e.keyCode);
                if (document.querySelector('.synctex-control-icon')) {
                  document.querySelector('.synctex-control-icon').click();
                }
              	// also make it work with detached PDF tab:
                if (document.querySelector('.detach-synctex-control')) {
                  document.querySelector('.detach-synctex-control').click();
                }
            }
        };
        console.log("user script set up");

    });

})();


/*
  NOTES
 
  The method used above may slow down typing in overleaf in general.

  The "right" approach would be to adapt CodeMirror, the JS editor that is
  used as part of Overleaf. However, especially since the newer version of
  CodeMirror (that uses a more functional framework), modfying the keymap
  at runtime, i.e. *after* it has already started, seems complicated ;-)

  References:
  - https://discuss.codemirror.net/t/add-new-keymap-after-editorview-instantiated/5313/3
  - https://codemirror.net/examples/config/
  - https://stackoverflow.com/q/9954701

  Unused garbage:

  const uppercaseKeybinding = {
    key: 'Alt-Space',
    run: uppercase,
  };

  var map = {"Alt-Space": function(cm){ alert("hello");  }}
  CodeMirror.addKeyMap(map);

*/