Merge pull request #109 from joakimoa/master
customisable keyboard navigation + bugfix in user-js.js
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commit
8728419b9e
202
js/keyboard-shortcuts.js
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202
js/keyboard-shortcuts.js
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// author: joakimoa
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// keyboard navigation option
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// v1.2
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$(document).on("ready", function() {
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// adding checkbox for turning on/off
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if (window.Options && Options.get_tab('general')) {
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Options.extend_tab("general",
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"<fieldset><legend> Keyboard Navigation </legend>" +
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("<label class='keyboardnav' id='keyboardnav' style='padding:0px;'><input type='checkbox' /> Enable Keyboard Navigation</label>") +
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"<table><tr><td>Action</td><td>Key (a-z)</td></tr>" +
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"<tr><td>Next Reply</td><td><input class='field' name='next-reply' spellcheck='false'></td></tr>" +
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"<tr><td>Previous Reply</td><td><input class='field' name='previous-reply' spellcheck='false'></td></tr>" +
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"<tr><td>Expand File</td><td><input class='field' name='expando' spellcheck='false'></td></tr>" +
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"</table></fieldset>");
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}
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$('.keyboardnav').on('change', function(){
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var setting = $(this).attr('id');
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localStorage[setting] = $(this).children('input').is(':checked');
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});
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if (!localStorage.keyboardnav) {
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localStorage.keyboardnav = 'false';
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}
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if (!localStorage["next.reply.key"]) {
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localStorage["next.reply.key"] = 74;
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}
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if (!localStorage["previous.reply.key"]) {
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localStorage["previous.reply.key"] = 75;
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}
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if (!localStorage["expando.key"]) {
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localStorage["expando.key"] = 69;
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}
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// getting locally stored setting
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function getSetting(key) {
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return (localStorage[key] == 'true');
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}
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function isKeySet(key) {
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return (localStorage[key] !== false);
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}
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var nextReplyInput = document.getElementsByName("next-reply")[0];
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var previousReplyInput = document.getElementsByName("previous-reply")[0];
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var expandoInput = document.getElementsByName("expando")[0];
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var nextReplyKeycode = 74; // j
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var previousReplyKeycode = 75; // k
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var expandoKeycode = 69; // e
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if (getSetting('keyboardnav')) $('#keyboardnav>input').prop('checked', 'checked');
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if (isKeySet('next.reply.key')) {
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nextReplyKeycode = localStorage["next.reply.key"];
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nextReplyInput.value = nextReplyKeycode;
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}
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if (isKeySet('previous.reply.key')) {
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previousReplyKeycode = localStorage["previous.reply.key"];
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previousReplyInput.value = previousReplyKeycode;
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}
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if (isKeySet('expando.key')) {
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expandoKeycode = localStorage["expando.key"];
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expandoInput.value = expandoKeycode;
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}
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document.getElementsByName("next-reply")[0].value = String.fromCharCode(nextReplyKeycode);
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document.getElementsByName("previous-reply")[0].value = String.fromCharCode(previousReplyKeycode);
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document.getElementsByName("expando")[0].value = String.fromCharCode(expandoKeycode);
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nextReplyInput.addEventListener("keyup", changeNextReplyKey, false);
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previousReplyInput.addEventListener("keyup", changePreviousReplyKey, false);
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expandoInput.addEventListener("keyup", changeExpandoKey, false);
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function changeNextReplyKey(e) {
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nextReplyInput.value = "";
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if (e.keyCode >= 65 && e.keyCode <= 90) {
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nextReplyInput.value = String.fromCharCode(e.keyCode);
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localStorage["next.reply.key"] = e.keyCode;
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}
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}
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function changePreviousReplyKey(e) {
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previousReplyInput.value = "";
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if (e.keyCode >= 65 && e.keyCode <= 90) {
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previousReplyInput.value = String.fromCharCode(e.keyCode);
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localStorage["previous.reply.key"] = e.keyCode;
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}
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}
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function changeExpandoKey(e) {
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expandoInput.value = "";
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if (e.keyCode >= 65 && e.keyCode <= 90) {
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expandoInput.value = String.fromCharCode(e.keyCode);
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localStorage["expando.key"] = e.keyCode;
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}
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}
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// loads the main function
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function loadKeyboardNav() {
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var replies = document.getElementsByClassName("post reply");
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var current_file = null;
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var highlight_color = "#555";
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var default_color = "black";
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if (replies.length > 0) default_color = window.getComputedStyle(replies[0], null).getPropertyValue("background-color");
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var reply_indexx = 0;
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var image_indexx = -1;
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function focusNextReply() {
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if (reply_indexx < replies.length-1) {
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reply_indexx++;
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image_indexx = -1;
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var images = replies[reply_indexx].getElementsByClassName("file");
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if (images.length !== 0) {
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focusNextImage();
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} else {
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scrollTo(replies[reply_indexx]);
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}
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}
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}
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function focusNextImage() {
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var images = replies[reply_indexx].getElementsByClassName("file");
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if (images.length === 0) {
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focusNextReply();
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} else {
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image_indexx++;
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if (image_indexx > images.length-1) {
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image_indexx = 0;
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focusNextReply();
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} else {
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scrollTo(images[image_indexx]);
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}
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}
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}
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function focusPreviousReply() {
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if (reply_indexx > 0) {
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reply_indexx--;
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var images = replies[reply_indexx].getElementsByClassName("file");
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image_indexx = images.length;
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if (images.length !== 0) {
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focusPreviousImage();
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} else {
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image_indexx = -1;
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scrollTo(replies[reply_indexx]);
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}
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}
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}
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function focusPreviousImage() {
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var images = replies[reply_indexx].getElementsByClassName("file");
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if (images.length === 0) {
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focusPreviousReply();
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} else {
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image_indexx--;
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if (image_indexx < 0) {
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image_indexx = 0;
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focusPreviousReply();
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} else {
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scrollTo(images[image_indexx]);
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}
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}
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}
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function scrollTo(e) {
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if (current_file !== null) {
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current_file.style.backgroundColor = default_color;
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}
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current_file = e;
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e.scrollIntoView();
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e.style.backgroundColor = highlight_color;
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}
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function expandFile() {
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var imgg = replies[reply_indexx].getElementsByClassName("post-image");
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if (imgg.length > 0 && image_indexx > -1) {
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imgg[image_indexx].click();
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}
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}
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// input
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window.addEventListener("keydown", checkKeyPressed, false);
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function checkKeyPressed(e) {
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if (e.keyCode == nextReplyKeycode) {
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focusNextImage();
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} else if (e.keyCode == previousReplyKeycode) {
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focusPreviousImage();
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} else if (e.keyCode == expandoKeycode) {
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expandFile();
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}
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}
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}
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// loads main function if checkbox toggled and in a thread with replies
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if (getSetting('keyboardnav') && document.getElementsByClassName("thread").length === 1 && document.getElementsByClassName("post reply").length > 0) {
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loadKeyboardNav();
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}
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});
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@ -54,7 +54,7 @@ var update_textarea = function() {
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textarea.text("/* "+_("Enter here your own Javascript code...")+" */\n" +
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textarea.text("/* "+_("Enter here your own Javascript code...")+" */\n" +
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"/* "+_("Have a backup of your storage somewhere, as messing here\nmay render you this website unusable.")+" */\n" +
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"/* "+_("Have a backup of your storage somewhere, as messing here\nmay render you this website unusable.")+" */\n" +
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"/* "+_("You can include JS files from remote servers, for example:")+" */\n" +
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"/* "+_("You can include JS files from remote servers, for example:")+" */\n" +
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'load_js("http://example.com/script.js");');
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"/* "+'load_js("http://example.com/script.js");*/');
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}
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}
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else {
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else {
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textarea.text(localStorage.user_js);
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textarea.text(localStorage.user_js);
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