418 lines
12 KiB
JavaScript
418 lines
12 KiB
JavaScript
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var _onreadyfuncs = [];
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var onready = function(f) {
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_onreadyfuncs.push(function() {f();});
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};
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var ready = function() {
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for(var idx = 0; idx < _onreadyfuncs.length; idx++) _onreadyfuncs[idx]();
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};
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var quickreply = function(shorthash, longhash, url) {
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if (!window.location.pathname.startsWith("/t/"))
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{
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window.location.href = url;
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return;
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}
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var elem = document.getElementById("comment");
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if(!elem) return;
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elem.value += ">>" + shorthash + "\n";
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};
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var get_storage = function() {
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var st = null;
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if (window.localStorage) {
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st = window.localStorage;
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} else if (localStorage) {
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st = localStorage;
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}
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return st;
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};
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var setSrcQuery = function(e, q) {
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var src = e.src;
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var p = src.indexOf('?');
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if (p >= 0) {
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src = src.substr(0, p);
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}
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e.src = src + "?" + q
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};
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var reloadImg = function(el) {
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setSrcQuery(el, "reload=" + (new Date()).getTime());
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return false;
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};
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var reloadThreadJSON = function() {
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var url = window.location.pathname + "/json";
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var ajax = new XMLHttpRequest();
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ajax.onreadystatechange = function() {
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if(ajax.readyState == 4) {
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if(ajax.status == 404) {
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console.log("thread gone");
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} else if (ajax.status == 200) {
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var rootelem = document.getElementById("thread_"+window.location.pathname.split("/")[2]);
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var posts = JSON.parse(ajax.responseText);
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for(var idx = 0; idx < posts.length; idx ++ )
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{
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var id = posts[idx].HashLong;
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var e = document.getElementById(id);
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if(!e) {
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e = document.createElement("div");
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e.innerHTML = posts[idx].PostMarkup;
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rootelem.appendChild(e.childNodes[0]);
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e.remove();
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}
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}
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}
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}
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};
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ajax.open("GET", url);
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ajax.send();
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}
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// form resubmit
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onready(function() {
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var submitPost = function(form, elem, cb) {
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var ajax = new XMLHttpRequest();
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ajax.onreadystatechange = function() {
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if (ajax.readyState == 4) {
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var err = "unknown error";
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var j = null;
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try {
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j = JSON.parse(ajax.responseText);
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err = j.error || err;
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} catch (ex) {
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err = "error parsing reply: "+ ex;
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}
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if(ajax.status == 201) {
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// success
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form.reset();
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cb(null, j);
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} else if (ajax.status == 200) {
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cb(err, j);
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} else {
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cb("http "+ajax.status, j);
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}
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} else {
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elem.innerHTML += ".";
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}
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};
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ajax.open(form.method, form.action+"/json");
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ajax.send(new FormData(form));
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};
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var elems = document.getElementsByClassName("postbutton");
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if(elems && elems.length > 0 && elems[0]) {
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var e = elems[0];
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var parent = e.parentElement;
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var origText = e.value;
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e.remove();
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e = document.createElement("button");
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parent.appendChild(e);
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e.innerHTML = origText;
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e.onclick = function() {
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e.disabled = true;
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e.innerHTML = "posting ";
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submitPost(document.forms[0], e, function(err, j) {
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if(err) {
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var captcha = document.getElementById("captcha_solution");
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if(captcha) {
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captcha.value = "";
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}
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}
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var msg = err || "posted";
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console.log(msg, j.url);
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e.innerHTML = msg;
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if(window.location.pathname == j.url) {
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setTimeout(function() {
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e.disabled = false;
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e.innerHTML = origText;
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}, 1000);
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var img = document.getElementById("captcha_img");
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if (img) {
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reloadImg(img);
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}
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reloadThreadJSON();
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} else {
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// do redirect
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window.location.pathname = j.url;
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}
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});
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}
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}
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});
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// captcha reload
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onready(function(){
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var e = document.getElementById("captcha_img");
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if (e) {
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e.onclick = function() {
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reloadImg(e);
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};
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}
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});
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// rewrite all images to add inline expand
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onready(function() {
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// is the filename matching an image?
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var filenameIsImage = function(fname) {
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return /\.(gif|jpeg|jpg|png|webp)/.test(fname.toLowerCase());
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};
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// setup image inlining for 1 element
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var setupInlineImage = function(thumb, url) {
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if(thumb.inlineIsSetUp) return;
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thumb.inlineIsSetUp = true;
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var img = thumb.querySelector("img.image");
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var expanded = false;
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var oldurl = img.src;
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thumb.onclick = function() {
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if (expanded) {
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img.setAttribute("class", "image");
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img.src = oldurl;
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expanded = false;
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} else {
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img.setAttribute("class", "expanded-thumbnail");
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img.src = url;
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expanded = true;
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}
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return false;
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};
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};
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// set up image inlining for all applicable children in an element
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var setupInlineImageIn = function(element) {
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var thumbs = element.querySelectorAll("a.image_link");
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for ( var i = 0 ; i < thumbs.length ; i++ ) {
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var url = thumbs[i].href;
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if (filenameIsImage(url)) {
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// match
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setupInlineImage(thumbs[i], url);
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}
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}
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};
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// Setup Javascript events for document
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setupInlineImageIn(document);
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// Setup Javascript events via updater
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if (window.MutationObserver) {
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var observer = new MutationObserver(function(mutations) {
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for (var i = 0; i < mutations.length; i++) {
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var additions = mutations[i].addedNodes;
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if (additions == null) continue;
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for (var j = 0; j < additions.length; j++) {
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var node = additions[j];
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if (node.nodeType == 1) {
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setupInlineImageIn(node);
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}
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}
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}
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});
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observer.observe(document.body, {childList: true, subtree: true});
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}
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});
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// set up post hider
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onready(function() {
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var get_hidden_posts = function() {
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var st = get_storage();
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var prefix = "nntpchan_hide_post_";
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return {
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all : function() {
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var msgids = [];
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for ( var k in st) {
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if (k.indexOf(prefix) == 0) {
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var m = k.substring(prefix.length);
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msgids.push(m);
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}
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}
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return msgids;
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},
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add : function (msg) {
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st[prefix+msg] = "post";
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},
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del : function (msg) {
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st.removeItem(prefix+msg);
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}
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};
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};
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// is a post elem an OP?
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var postIsOP = function(elem) {
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var ds = elem.dataset;
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return ds && ds.rootmsgid == ds.msgid ;
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};
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var hide_elem = function(elem, fade) {
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if (elem.style) {
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elem.style.display = "none";
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} else {
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elem.style = {display: "none" };
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}
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elem.dataset.userhide = "yes";
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};
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var unhide_elem = function(elem) {
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elem.style = "";
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elem.dataset.userhide = "no";
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};
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// return true if element is hidden
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var elemIsHidden = function(elem) {
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return elem.dataset && elem.dataset.userhide == "yes";
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};
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// hide a post
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var hidepost = function(elem, nofade) {
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console.log("hidepost("+elem.dataset.msgid+")");
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var posts = get_hidden_posts();
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if (posts) {
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// add to persitant hide
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posts.add(elem.dataset.msgidhash);
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}
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if(postIsOP(elem)) {
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// hide thread it's an OP
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var thread = document.getElementById("thread_"+elem.dataset.rootmsgidhash);
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if (thread) {
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var e = thread.getElementsByClassName("post");
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for ( var idx = 0; idx < e.length ; idx ++ ) {
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if (e[idx].dataset.msgid == elem.dataset.msgid) continue; // don't apply
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hidepost(e[idx]);
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}
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}
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}
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// hide attachments and post body
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var es = elem.getElementsByClassName("image");
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for (var idx = 0; idx < es.length ; idx ++ ) {
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hide_elem(es[idx]);
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}
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es = elem.getElementsByClassName("message_span");
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for (var idx = 0; idx < es.length ; idx ++ ) {
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hide_elem(es[idx]);
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}
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es = elem.getElementsByClassName("topicline");
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for (var idx = 0; idx < es.length ; idx ++ ) {
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hide_elem(es[idx]);
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}
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elem.dataset.userhide = "yes";
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elem.setHideLabel("[show]");
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};
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// unhide a post
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var unhidepost = function(elem) {
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console.log("unhidepost("+elem.dataset.msgid+")");
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var posts = get_hidden_posts();
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if (posts) {
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// remove from persiting hide
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posts.del(elem.dataset.msgidhash);
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}
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if(postIsOP(elem)) {
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var thread = document.getElementById("thread_"+elem.dataset.rootmsgidhash);
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if(thread) {
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var e = thread.getElementsByClassName("post");
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for ( var idx = 0; idx < e.length ; idx ++ ) {
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if(e[idx].dataset.msgid == elem.dataset.msgid) continue;
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unhidepost(e[idx]);
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}
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}
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}
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// unhide attachments and post body
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var es = elem.getElementsByClassName("image");
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for (var idx = 0; idx < es.length ; idx ++ ) {
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unhide_elem(es[idx]);
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}
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es = elem.getElementsByClassName("message_span");
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for (var idx = 0; idx < es.length ; idx ++ ) {
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unhide_elem(es[idx]);
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}
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es = elem.getElementsByClassName("topicline");
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for (var idx = 0; idx < es.length ; idx ++ ) {
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unhide_elem(es[idx]);
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}
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elem.dataset.userhide = "no";
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elem.setHideLabel("[hide]");
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};
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// hide a post given a callback that checks each post
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var hideposts = function(check_func) {
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var es = document.getElementsByClassName("post");
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for ( var idx = 0; idx < es.length ; idx ++ ) {
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var elem = es[idx];
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if(check_func && elem && check_func(elem)) {
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hidepost(elem);
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}
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}
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};
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// unhide all posts given callback
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// if callback is null unhide all
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var unhideall = function(check_func) {
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var es = document.getElementsByClassName("post");
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for (var idx=0 ; idx < es.length; idx ++ ) {
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var elem = es[idx];
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if(!check_func) { unhide(elem); }
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else if(check_func(elem)) { unhide(elem); }
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}
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};
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// inject posthide into page
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var posts = document.getElementsByClassName("post");
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for (var idx = 0 ; idx < posts.length; idx++ ) {
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var inject = function (elem) {
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var hider = document.createElement("a");
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hider.setAttribute("class", "hider");
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elem.setHideLabel = function (txt) {
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var e_hider = hider;
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e_hider.innerHTML = txt;
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};
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elem.hidepost = function() {
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var e_self = elem;
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var e_hider = hider;
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hidepost(e_self);
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};
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elem.unhidepost = function() {
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var e_self = elem;
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var e_hider = hider;
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unhidepost(e_self);
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};
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elem.isHiding = function() {
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var e_self = elem;
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return elemIsHidden(e_self);
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};
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hider.appendChild(document.createTextNode("[hide]"));
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hider.onclick = function() {
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var e_self = elem;
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if(e_self.isHiding()) {
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e_self.unhidepost();
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} else {
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e_self.hidepost();
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}
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};
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elem.appendChild(hider);
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};
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inject(posts[idx]);
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}
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// apply persiting hidden posts
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posts = get_hidden_posts();
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if(posts) {
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var all = posts.all();
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for ( var idx = 0 ; idx < all.length; idx ++ ) {
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var id = all[idx];
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var elem = document.getElementById(id);
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if(elem)
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hidepost(elem, true);
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}
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}
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});
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