408 lines
11 KiB
JavaScript
408 lines
11 KiB
JavaScript
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var dynreply;
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function getReplyTo() {
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if(!dynreply) {
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var e = document.getElementById("postform_container");
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if (e) {
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// use existing postform
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dynreply = new DynReply(e);
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} else {
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// build a new postform
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dynreply = new DynReply();
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}
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}
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return dynreply;
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}
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function table_insert_row(table, header, items) {
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var tr = document.createElement("tr");
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// insert header element
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var th = document.createElement("th");
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th.appendChild(header);
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tr.appendChild(th);
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// insert the rest of the elements
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for (var idx = 0; idx < items.length; idx ++ ) {
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var elem = document.createElement("td");
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elem.appendChild(items[idx]);
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tr.appendChild(elem);
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}
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table.appendChild(tr);
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}
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/**
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build dynamic reply box
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*/
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function DynReply(existingElem) {
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if (existingElem) {
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// wrap existing post form
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this.elem = existingElem;
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this.form = this.elem.querySelector("form");
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this._error = document.getElementById("postform_msg");
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this.url = this.form.action + "?t=json";
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return;
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}
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// build new post form
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var elem = document.createElement("div");
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elem.setAttribute("id", "postform_container");
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this.elem = elem;
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// build post form
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this.form = document.createElement("form");
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this.form.enctype = "multipart/form-data";
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this.form.name = "post";
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this.form.method = "post";
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// reference
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elem = document.createElement("input");
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elem.setAttribute("id", "postform_reference");
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elem.name = "reference";
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elem.type = "hidden";
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this.form.appendChild(elem);
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var table = document.createElement("table");
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table.setAttribute("class", "postform");
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var tbody = document.createElement("tbody");
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// name
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elem = document.createElement("input");
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elem.setAttribute("name", "name");
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elem.setAttribute("value", "Anonymous");
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elem.setAttribute("id", "postform_name");
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var err_elem = document.createElement("span");
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err_elem.setAttribute("id", "postform_msg");
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this._error = err_elem;
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table_insert_row(tbody, document.createTextNode("Name"), [elem, err_elem])
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// subject
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elem = document.createElement("input");
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elem.setAttribute("name", "subject");
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elem.setAttribute("value", "");
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elem.setAttribute("id", "postform_subject");
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// submit
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var submit = document.createElement("input");
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submit.setAttribute("value", "reply");
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submit.setAttribute("class", "button");
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submit.setAttribute("type", "submit");
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submit.setAttribute("id", "postform_submit");
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table_insert_row(tbody, document.createTextNode("Subject"), [elem, submit]);
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// Comment
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elem = document.createElement("textarea");
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elem.setAttribute("id", "postform_message");
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elem.setAttribute("name", "message");
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elem.setAttribute("cols", "40");
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elem.setAttribute("rows", "5");
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table_insert_row(tbody, document.createTextNode("Comment"), [elem]);
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// file
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elem = document.createElement("input");
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elem.setAttribute("class", "postform_attachment");
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elem.setAttribute("id", "postform_attachments");
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elem.setAttribute("type", "file");
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elem.setAttribute("name", "attachment_uploaded");
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elem.setAttribute("multiple", "multiple");
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table_insert_row(tbody, document.createTextNode("Files"), [elem]);
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// dubs
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elem = document.createElement("input");
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elem.setAttribute("type", "checkbox");
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elem.setAttribute("name", "dubs");
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table_insert_row(tbody, document.createTextNode("Get Dubs"), [elem]);
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// captcha
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elem = document.createElement("img");
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elem.setAttribute("id", "captcha_img");
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elem.alt = "captcha";
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table_insert_row(tbody, document.createTextNode("Captcha"), [elem]);
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// captcha solution
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elem = document.createElement("input");
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elem.name = "captcha";
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elem.autocomplete = "off";
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elem.setAttribute("id", "captcha_solution");
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table_insert_row(tbody, document.createTextNode("Solution"), [elem])
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table.appendChild(tbody);
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this.form.appendChild(table);
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this.elem.appendChild(this.form);
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document.body.appendChild(this.elem);
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this.board = null;
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this.roothash = null;
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this.prefix = null;
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this.url = null;
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}
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DynReply.prototype.moveTo = function(x,y) {
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x = window.screenX - x ;
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this.elem.setAttribute("style", "top: "+y+"px; right: "+x+"px;");
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}
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DynReply.prototype.update = function() {
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if (this.prefix) {
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// update captcha
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this.updateCaptcha();
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if (this.board && this.roothash) {
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// update post form
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var ref = document.getElementById("postform_reference");
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ref.setAttribute("value", this.roothash);
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this.url = this.prefix + "post/" + this.board + "?t=json";
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}
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}
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}
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DynReply.prototype.show = function() {
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console.log("show dynreply");
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this.update();
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this.elem.style.display = 'inline';
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}
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DynReply.prototype.hide = function() {
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console.log("hide dynreply");
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this.elem.style.display = "none";
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}
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// clear all fields
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DynReply.prototype.clear = function() {
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this.clearSolution();
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this.clearPostbox();
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}
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// clear captcha solution
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DynReply.prototype.clearSolution = function() {
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var e = document.getElementById("captcha_solution");
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// reset value
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e.value = "";
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}
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// clear postform elements
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DynReply.prototype.clearPostbox = function() {
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var e = document.getElementById("postform_subject");
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e.value = "";
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e = document.getElementById("postform_message");
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e.value = "";
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e = document.getElementById("postform_attachments");
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e.value = null;
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}
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DynReply.prototype.post = function(cb, err_cb) {
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if (this.url && this.form) {
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var data = new FormData(this.form);
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var ajax = new XMLHttpRequest();
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ajax.onreadystatechange = function(ev) {
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if (ajax.readyState == XMLHttpRequest.DONE) {
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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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cb(j);
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} catch (e) {
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if(err_cb) {
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err_cb(e);
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}
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}
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}
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}
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ajax.open("POST", this.url);
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ajax.send(data);
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}
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}
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DynReply.prototype.updateCaptcha = function() {
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if (this.prefix) {
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var captcha_img = document.getElementById("captcha_img");
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captcha_img.src = this.prefix + "captcha/img";
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}
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this.clearSolution();
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}
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DynReply.prototype.setPrefix = function(prefix) {
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this.prefix = prefix;
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}
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DynReply.prototype.hide = function() {
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this.elem.style.display = 'none';
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}
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DynReply.prototype.setBoard = function(boardname) {
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if (boardname) {
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this.board = boardname;
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}
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}
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DynReply.prototype.setRoot = function(roothash) {
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if (roothash) {
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this.roothash = roothash;
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}
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}
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DynReply.prototype.showError = function(msg) {
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console.log("error in dynreply: "+msg);
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this._error.setAttribute("class", "error");
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this._error.appendChild(document.createTextNode(msg));
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this.updateCaptcha();
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}
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DynReply.prototype.showMessage = function(msg) {
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this._error.setAttribute("class", "message");
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this._error.innerHTML = "";
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this._error.appendChild(document.createTextNode(msg));
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var e = this._error;
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setTimeout(function() {
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// clear it
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e.innerHTML = "";
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}, 2000);
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}
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// reply box function
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function nntpchan_reply(parent, shorthash) {
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if (parent) {
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var boardname = parent.getAttribute("boardname");
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var roothash = parent.getAttribute("root");
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var replyto = getReplyTo();
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// set target
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replyto.setBoard(boardname);
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replyto.setRoot(roothash);
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// show it
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replyto.show();
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}
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var elem = document.getElementById("postform_message");
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if ( elem )
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{
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elem.value += ">>" + shorthash.substr(0,10) + "\n";
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}
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}
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// inject post hover behavior
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function inject_hover(prefix, el, parent) {
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if (!prefix) { throw "prefix is not defined"; }
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var linkhash = el.getAttribute("backlinkhash");
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if (!linkhash) { throw "linkhash undefined"; }
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console.log("rewrite linkhash "+linkhash);
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var elem = document.createElement("span");
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elem.setAttribute("class", "backlink_rewritten");
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elem.appendChild(document.createTextNode(">>"+linkhash.substr(0,10)));
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if (!parent) {
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parent = el.parentNode;
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}
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parent.removeChild(el);
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parent.appendChild(elem);
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elem.onclick = function(ev) {
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if(parent.backlink) {
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nntpchan_apicall(prefix+"api/find?hash="+linkhash, function(j) {
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var wrapper = document.createElement("div");
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wrapper.setAttribute("class", "hover "+linkhash);
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if (j == null) {
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// not found?
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wrapper.setAttribute("class", "hover notfound-hover "+linkhash);
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wrapper.appendChild(document.createTextNode("not found"));
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} else {
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// wrap backlink
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nntpchan_buildpost(wrapper, j);
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}
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parent.appendChild(wrapper);
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parent.backlink = false;
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}, function(msg) {
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var wrapper = document.createElement("div");
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wrapper.setAttribute("class", "hover "+linkhash);
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wrapper.appendChild(document.createTextNode(msg));
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parent.appendChild(wrapper);
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parent.backlink = false;
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});
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} else {
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var elems = document.getElementsByClassName(linkhash);
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if (!elems) throw "bad state, no backlinks open?";
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for (var idx = 0 ; idx < elems.length; idx ++ ) {
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elems[idx].parentNode.removeChild(elems[idx]);
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}
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parent.backlink = true;
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}
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};
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parent.backlink = true;
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}
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// inject post hover for all backlinks in an element
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function inject_hover_for_element(elem) {
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var elems = elem.getElementsByClassName("backlink");
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var ls = [];
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var l = elems.length;
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for ( var idx = 0 ; idx < l ; idx ++ ) {
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var e = elems[idx];
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ls.push(e);
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}
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for( var elem in ls ) {
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inject_hover(prefix, ls[elem]);
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}
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}
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function init(prefix) {
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// inject posthover ...
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inject_hover_for_element(document);
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// initialize replyto widget
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var rpl = getReplyTo();
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rpl.setPrefix(prefix);
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// position replyto widget
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var e = rpl.elem;
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e.setAttribute("draggable", "true");
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var mouseDownX, mouseDownY;
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var originalX = window.screenX - 150;
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var originalY = 10;
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rpl.moveTo(originalX, originalY);
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e.addEventListener("dragstart", function(ev) {
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mouseDownX = ev.clientX;
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mouseDownY = ev.clientY;
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if (!ev.ctrlKey) {
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ev.preventDefault();
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}
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}, false);
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e.addEventListener("dragend", function(ev) {
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var x = originalX + ev.clientX - mouseDownX;
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var y = originalY + ev.clientY - mouseDownY;
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x -= window.screenLeft;
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y -= window.screenTop;
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rpl.moveTo(x, y);
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originalX = x;
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originalY = y;
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}, false);
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// add replyto post handlers
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e = document.getElementById("postform_submit");
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var postit = function() {
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var f = document.querySelector("form");
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// do ajax request to post data
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var r = getReplyTo();
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r.showMessage("posting... ");
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r.post(function(j) {
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if(j.error) {
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// an error happened
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r.showError(j.error);
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} else {
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// we're good
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r.showMessage("posted :^)");
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r.updateCaptcha();
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r.clear();
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}
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}, function(err) {
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r.showError(err);
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r.clearSolution();
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});
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}
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e.onclick = postit;
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var f = document.querySelector("form");
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f.onsubmit = function() {
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postit();
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return false;
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}
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}
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