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nntpchan/contrib/static/overchan.js
Jeff Becker 2284fac632
fix js
2017-09-30 12:11:58 -04:00

424 lines
12 KiB
JavaScript

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