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// author: joakimoa
// keyboard navigation option
// v1.1
// adding checkbox for turning on/off
if (window.Options && Options.get_tab('general')) {
Options.extend_tab("general",
"<fieldset><legend> Keyboard Navigation </legend>" +
("<label class='keyboardnav' id='keyboardnav' style='padding:0px;'><input type='checkbox' /> Enable Keyboard Navigation</label>") +
"<table><tr><td>Action</td><td>Key</td></tr>" +
"<tr><td>Next Reply</td><td><input class='field' name='next-reply' spellcheck='false'></td></tr>" +
"<tr><td>Previous Reply</td><td><input class='field' name='previous-reply' spellcheck='false'></td></tr>" +
"<tr><td>Expand File</td><td><input class='field' name='expando' spellcheck='false'></td></tr>" +
"</table></fieldset>");
}
$('.keyboardnav').on('change', function(){
var setting = $(this).attr('id');
console.log("changed keyboardnav");
localStorage[setting] = $(this).children('input').is(':checked');
});
if (!localStorage.keyboardnav) {
localStorage.keyboardnav = 'false';
}
if (!localStorage["next.reply.key"]) {
localStorage["next.reply.key"] = 74;
}
if (!localStorage["previous.reply.key"]) {
localStorage["previous.reply.key"] = 75;
}
if (!localStorage["expando.key"]) {
localStorage["expando.key"] = 69;
}
// getting locally stored setting
function getSetting(key) {
return (localStorage[key] == 'true');
}
function isKeySet(key) {
return (localStorage[key] !== false);
}
var nextReplyInput = document.getElementsByName("next-reply")[0];
var previousReplyInput = document.getElementsByName("previous-reply")[0];
var expandoInput = document.getElementsByName("expando")[0];
var nextReplyKeycode = 74;
var previousReplyKeycode = 75;
var expandoKeycode = 69;
if (getSetting('keyboardnav')) $('#keyboardnav>input').prop('checked', 'checked');
if (isKeySet('next.reply.key')) {
nextReplyKeycode = localStorage["next.reply.key"];
nextReplyInput.value = nextReplyKeycode;
} // need to add so it loads the settings if there are any, to both the vars and to the text fields
if (isKeySet('previous.reply.key')) {
previousReplyKeycode = localStorage["previous.reply.key"];
previousReplyInput.value = previousReplyKeycode;
}
if (isKeySet('expando.key')) {
expandoKeycode = localStorage["expando.key"];
expandoInput.value = expandoKeycode;
}
document.getElementsByName("next-reply")[0].value = String.fromCharCode(nextReplyKeycode);
document.getElementsByName("previous-reply")[0].value = String.fromCharCode(previousReplyKeycode);
document.getElementsByName("expando")[0].value = String.fromCharCode(expandoKeycode);
nextReplyInput.addEventListener("keyup", changeNextReplyKey, false);
previousReplyInput.addEventListener("keyup", changePreviousReplyKey, false);
expandoInput.addEventListener("keyup", changeExpandoKey, false);
function changeNextReplyKey(e) {
//console.log(String.fromCharCode(e.keyCode));
nextReplyInput.value = "";
if (e.keyCode >= 65 && e.keyCode <= 90) {
nextReplyInput.value = String.fromCharCode(e.keyCode);
localStorage["next.reply.key"] = e.keyCode;
}
}
function changePreviousReplyKey(e) {
//console.log(String.fromCharCode(e.keyCode));
previousReplyInput.value = "";
if (e.keyCode >= 65 && e.keyCode <= 90) {
previousReplyInput.value = String.fromCharCode(e.keyCode);
localStorage["previous.reply.key"] = e.keyCode;
}
}
function changeExpandoKey(e) {
//console.log(String.fromCharCode(e.keyCode));
expandoInput.value = "";
if (e.keyCode >= 65 && e.keyCode <= 90) {
expandoInput.value = String.fromCharCode(e.keyCode);
localStorage["expando.key"] = e.keyCode;
}
}
// loads the main function
function loadKeyboardNav() {
// get arr and nav
var files = document.getElementsByClassName("file multifile");
var current_file = null;
var default_color = "black";
default_color = window.getComputedStyle(files[0], null).getPropertyValue("background-color");
var k = -1;
function scrollDown() {
if (k < files.length) {
k++;
scrollTo(files[k]);
}
}
function scrollUp() {
if (k > 0) {
k--;
scrollTo(files[k]);
}
}
function scrollTo(e) {
if (current_file !== null) {
current_file.style.backgroundColor = default_color;
}
current_file = e;
e.scrollIntoView();
e.style.backgroundColor = "#1D1D21";
}
function expandFile() {
files[k].getElementsByClassName("post-image")[0].click();
}
// input
window.addEventListener("keydown", checkKeyPressed, false);
function checkKeyPressed(e) {
if (e.keyCode == nextReplyKeycode) {
scrollDown();
} else if (e.keyCode == previousReplyKeycode) {
scrollUp();
} else if (e.keyCode == expandoKeycode && k > -1) {
expandFile();
}
}
}
// loads main function if checkbox toggled and in a thread
if (getSetting('keyboardnav') && document.getElementsByClassName("thread").length === 1) {
loadKeyboardNav();
}
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