// ==UserScript==
// @name         Notion Navigation Fixer
// @namespace    http://tampermonkey.net/
// @version      0.3
// @description  Allow browser nav options like back forward pgup pgdown
// @author       Andreas Huttenrauch
// @match        *://www.notion.so/*
// @run-at       document-end
// @downloadURL none
// ==/UserScript==

console.log("fixing nav");

document.addEventListener('mousedown', function(e) {
    //console.log(e);
    if ( (e.buttons & 8) == 8 ) {
        e.stopImmediatePropagation();
        e.preventDefault();
        window.history.back();
    }
    if ( (e.buttons & 16) == 16 ) {
        e.stopImmediatePropagation();
        e.preventDefault();
        window.history.forward();
    }
});

document.addEventListener('keydown', function(e) {
    //console.log(e);
    /*
    if ( e.target.contentEditable ) {
        console.log("not moving because you are editing something important");
        return;
    }
    */
    var mainDiv = document.querySelector(".notion-frame .notion-scroller");
    if ( mainDiv == "undefined" ) return;
    var scrollAmt = parseInt(window.innerHeight*0.8);
    if ( e.keyCode == 34 && e.shiftKey == false && e.ctrlKey == false ) {
        e.stopImmediatePropagation();
        e.preventDefault();
        mainDiv.scrollBy(0, scrollAmt);
    }
    if ( e.keyCode == 33 && e.shiftKey == false && e.ctrlKey == false ) {
        e.stopImmediatePropagation();
        e.preventDefault();
        mainDiv.scrollBy(0, -scrollAmt);
    }
});