webcit-ng/static/js/view_mail.js

   1 // This module handles the view for "mailbox" rooms.
   2 //
   3 // Copyright (c) 2016-2023 by the citadel.org team
   4 //
   5 // This program is open source software.  Use, duplication, or
   6 // disclosure is subject to the GNU General Public License v3.
   7
   8
   9 var displayed_message = 0;                                                      // ID of message currently being displayed
  10 var RefreshMailboxInterval;                                                     // We store our refresh timer here
  11 var highest_mailnum;                                                            // This is used to detect newly arrived mail
  12 var newmail_notify = {
  13         NO  : 0,                                                                // do not perform new mail notifications
  14         YES : 1                                                                 // yes, perform new mail notifications
  15 };
  16
  17
  18 // This is the async back end for mail_delete_selected()
  19 mail_delete_func = async(table, row) => {
  20         let m = parseInt(row["id"].substring(12));                              // derive msgnum from row id
  21
  22         if (is_trash_folder) {
  23                 response = await fetch(
  24                         "/ctdl/r/" + escapeHTMLURI(current_room) + "/" + m,
  25                         {
  26                                 method: "DELETE"                                // If this is the Trash folder, delete permanently
  27                         },
  28                 );
  29         }
  30         else {
  31                 response = await fetch(
  32                         "/ctdl/r/" + escapeHTMLURI(current_room) + "/" + m,
  33                         {
  34                                 method: "MOVE",                                 // Otherwise, move to the Trash folder
  35                                 headers: { "Destination" : "/ctdl/r/_TRASH_" }
  36                         },
  37                 );
  38         }
  39
  40         if (response.ok) {                              // If the server accepted the delete, blank out the message div
  41                 table.deleteRow(row.rowIndex);
  42                 if (m == displayed_message) {
  43                         document.getElementById("ctdl-mailbox-reading-pane").innerHTML = "";
  44                         displayed_message = 0;
  45                 }
  46         }
  47 }
  48
  49
  50 // Delete the selected messages (can be activated by mouse click or keypress)
  51 function mail_delete_selected() {
  52         let table = document.getElementById("ctdl-onscreen-mailbox");
  53         let i, row;
  54         for (i=0; row=table.rows[i]; ++i) {
  55                 if (row.classList.contains("ctdl-mail-selected")) {
  56                         mail_delete_func(table, row);
  57                 }
  58         }
  59 }
  60
  61
  62 // Handler function for keypresses detected while the mail view is displayed.  Mainly for deleting messages.
  63 function mail_keypress(event) {
  64
  65         // If the "ctdl-mailbox-pane" no longer exists, the user has navigated to a different part of the site,
  66         // so cancel the event listener.
  67         try {
  68                 document.getElementById("ctdl-mailbox-pane").innerHTML;
  69         }
  70         catch {
  71                 document.removeEventListener("keydown", mail_keypress);
  72                 return;
  73         }
  74
  75         const key = event.key.toLowerCase();
  76         if (key == "delete") {
  77                 mail_delete_selected();
  78         }
  79
  80 }
  81
  82
  83 // Handler function for dragging email messages to other folders
  84 function mail_dragstart(event) {
  85         let i;
  86         let count = 0;
  87         let table = document.getElementById("ctdl-onscreen-mailbox");
  88         let messages_being_dragged = [] ;
  89
  90         if (event.target.classList.contains("ctdl-mail-selected")) {
  91                 // The row being dragged IS selected.  See if any OTHER rows are selected, and they will come along for the ride.
  92                 for (i=1; row=table.rows[i]; ++i) {
  93                         if (row.classList.contains("ctdl-mail-selected")) {
  94                                 count = count + 1;
  95                                 messages_being_dragged.push(row.id);    // Tell the clipboard what's being moved.
  96                         }
  97                 }
  98         }
  99         else {
 100                 // The row being dragged is NOT selected.  It will be dragged on its own, ignoring the selected rows.
 101                 count = 1;
 102                 messages_being_dragged.push(event.target.id);           // Tell the clipboard what's being moved.
 103         }
 104
 105         // Set the custom drag image to an envelope + number of messages being dragged
 106         d = document.getElementById("ctdl_draggo");
 107         d.innerHTML = "<font size='+2'><i class='fa fa-envelope' style='color: red'></i> " + count + "</font>"
 108         event.dataTransfer.setDragImage(d, 0, 0);
 109         event.dataTransfer.setData("text", messages_being_dragged);
 110 }
 111
 112
 113 // Render reply address for a message (FIXME figure out how to deal with "reply-to:")
 114 function reply_addr(msg) {
 115         //if (msg.locl) {
 116                 //return([msg.from]);
 117         //}
 118         //else {
 119                 return([msg.from + " &lt;" + msg.rfca + "&gt;"]);
 120         //}
 121 }
 122
 123
 124 // Render the To: recipients for a reply-all operation
 125 function replyall_to(msg) {
 126         return([...reply_addr(msg), ...msg.rcpt]);
 127 }
 128
 129
 130 // Render a message into the mailbox view
 131 // (We want the message number and the message itself because we need to keep the msgnum for reply purposes)
 132 function mail_render_one(msgnum, msg, target_div, include_controls) {
 133         let div = "";
 134         try {
 135                 outmsg =
 136                   "<div class=\"ctdl-mmsg-wrapper\">"                           // begin message wrapper
 137                 ;
 138
 139                 if (include_controls) {                                         // omit controls if this is a pull quote
 140
 141                         let subject     = msg.subj              ? escapeJS(msg.subj)            : "" ;
 142
 143                         outmsg +=
 144                           render_userpic(msg.from)                              // user avatar
 145                         + "<div class=\"ctdl-mmsg-content\">"                   // begin content
 146                         + "<div class=\"ctdl-msg-header\">"                     // begin header
 147                         + "<span class=\"ctdl-msg-header-info\">"               // begin header info on left side
 148                         + render_msg_author(msg, views.VIEW_MAILBOX)
 149                         + "<span class=\"ctdl-msgdate\">"
 150                         + string_timestamp(msg.time,0)
 151                         + "</span>"                                             // end msgdate
 152                         + "</span>"                                             // end header info on left side
 153                         + "<span class=\"ctdl-msg-header-buttons\">"            // begin buttons on right side
 154
 155                         + "<span class=\"ctdl-msg-button\">"                    // Reply
 156                         + `<a href="javascript:mail_compose(msg.wefw, ${msgnum}, reply_addr(msg), [], 'Re: ${subject}');">`
 157                         + "<i class=\"fa fa-reply\"></i> "
 158                         + _("Reply")
 159                         + "</a></span>"
 160
 161                         + "<span class=\"ctdl-msg-button\">"                    // Reply-All
 162                         + `<a href="javascript:mail_compose(msg.wefw, ${msgnum}, replyall_to(msg), msg.cccc, 'Re: ${subject}');">`
 163                         + "<i class=\"fa fa-reply-all\"></i> "
 164                         + _("ReplyAll")
 165                         + "</a></span>"
 166
 167                         + "<span class=\"ctdl-msg-button\">"
 168                         + `<a href="javascript:mail_compose(msg.wefw, ${msgnum}, [], [], 'Fwd: ${subject}');">`
 169                         + "<i class=\"fa fa-mail-forward\"></i> "
 170                         + _("Forward")
 171                         + "</a></span>";
 172
 173                         if (can_delete_messages) {
 174                                 outmsg +=
 175                                 "<span class=\"ctdl-msg-button\">"
 176                                 + "<a href=\"javascript:forum_delete_message('"+div+"','"+msg.msgnum+"');\">"
 177                                 + "<i class=\"fa fa-trash\"></i> "
 178                                 + _("Delete")
 179                                 + "</a></span>";
 180                         }
 181
 182                         outmsg +=
 183                           "</span>";                                            // end buttons on right side
 184
 185                         // Display the To: recipients, if any are present
 186                         if (msg.rcpt) {
 187                                 outmsg += "<br><span>" + _("To:") + " ";
 188                                 for (let r=0; r<msg.rcpt.length; ++r) {
 189                                         if (r != 0) {
 190                                                 outmsg += ", ";
 191                                         }
 192                                         outmsg += escapeHTML(msg.rcpt[r]);
 193                                 }
 194                                 outmsg += "</span>";
 195                         }
 196
 197                         // Display the Cc: recipients, if any are present
 198                         if (msg.cccc) {
 199                                 outmsg += "<br><span>" + _("Cc:") + " ";
 200                                 for (let r=0; r<msg.cccc.length; ++r) {
 201                                         if (r != 0) {
 202                                                 outmsg += ", ";
 203                                         }
 204                                         outmsg += escapeHTML(msg.cccc[r]);
 205                                 }
 206                                 outmsg += "</span>";
 207                         }
 208
 209                         // Display a subject line, but only if the message has a subject (internal Citadel messages often don't)
 210                         if (msg.subj) {
 211                                 outmsg +=
 212                                 "<br><span class=\"ctdl-msgsubject\">" + msg.subj + "</span>";
 213                         }
 214
 215                         outmsg +=
 216                           "</div>";                                             // end header
 217                 }
 218
 219                 // Display attachments, if any are present (don't do this if we're quoting the message)
 220                 if ( (msg.part) && (include_controls) ) {
 221                         let display_attachments = 0;
 222                         for (let r=0; r<msg.part.length; ++r) {
 223                                 if (msg.part[r].disp == "attachment") {
 224                                         if (display_attachments == 0) {
 225                                                 outmsg += "<ul>";
 226                                         }
 227                                         display_attachments += 1;
 228                                         outmsg += "<li>"
 229                                                 + "<a href=\"/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgnum + "/" + msg.part[r].partnum + "/" + escapeHTMLURI(msg.part[r].filename) + "\" target=\"_blank\">"
 230                                                 + "<i class=\"fa fa-paperclip\"></i>&nbsp;" + msg.part[r].partnum + ": " + msg.part[r].filename
 231                                                 + " (" + msg.part[r].len + " " + _("bytes") + ")"
 232                                                 + "</a>"
 233                                                 + "</li>";
 234                                 }
 235                         }
 236                         if (display_attachments > 0) {
 237                                 outmsg += "</ul><br>";
 238                         }
 239                 }
 240
 241
 242                 outmsg +=
 243                   "<div class=\"ctdl-msg-body\" id=\"" + div + "_body\">"       // begin body
 244                 + msg.text
 245                 + "</div>"                                                      // end body
 246                 + "</div>"                                                      // end content
 247                 + "</div>"                                                      // end wrapper
 248                 ;
 249         }
 250         catch(err) {
 251                 outmsg = "<div class=\"ctdl-mmsg-wrapper\">" + err.message + "</div>";
 252         }
 253
 254         target_div.innerHTML = outmsg;
 255 }
 256
 257
 258 // display an individual message (note: this wants an actual div object, not a string containing the name of a div)
 259 function mail_display_message(msgnum, target_div, include_controls) {
 260         url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgnum + "/json";
 261         mail_fetch_msg = async() => {
 262                 response = await fetch(url);
 263                 msg = await(response.json());
 264                 if (response.ok) {
 265                         mail_render_one(msgnum, msg, target_div, include_controls);
 266                 }
 267         }
 268         mail_fetch_msg();
 269 }
 270
 271
 272 // A message has been selected...
 273 function click_message(event, msgnum) {
 274         var table = document.getElementById("ctdl-onscreen-mailbox");
 275         var i, m, row;
 276
 277         // ctrl + click = toggle an individual message without changing existing selection
 278         if (event.ctrlKey) {
 279                 document.getElementById("ctdl-msgsum-" + msgnum).classList.toggle("ctdl-mail-selected");
 280         }
 281
 282         // shift + click = select a range of messages (start with row 1 because row 0 is the header)
 283         else if (event.shiftKey) {
 284                 for (i=1; row=table.rows[i]; ++i) {
 285                         m = parseInt(row["id"].substring(12));                          // derive msgnum from row id
 286                         if (
 287                                 ((msgnum >= displayed_message) && (m >= displayed_message) && (m <= msgnum))
 288                                 || ((msgnum <= displayed_message) && (m <= displayed_message) && (m >= msgnum))
 289                         ) {
 290                                 row.classList.add("ctdl-mail-selected");
 291                         }
 292                         else {
 293                                 row.classList.remove("ctdl-mail-selected");
 294                         }
 295                 }
 296         }
 297
 298         // click + no modifiers = select one message and unselect all others (start with row 1 because row 0 is the header)
 299         else {
 300                 for (i=1; row=table.rows[i]; ++i) {
 301                         if (row["id"] == "ctdl-msgsum-" + msgnum) {
 302                                 row.classList.add("ctdl-mail-selected");
 303                         }
 304                         else {
 305                                 row.classList.remove("ctdl-mail-selected");
 306                         }
 307                 }
 308         }
 309
 310         // display the message if it isn't already displayed
 311         if (displayed_message != msgnum) {
 312                 displayed_message = msgnum;
 313                 mail_display_message(msgnum, document.getElementById("ctdl-mailbox-reading-pane"), 1);
 314         }
 315 }
 316
 317
 318 // render one row in the mailbox table (this could be called from one of several places)
 319 function mail_render_row(msg, is_selected) {
 320         let row = "<tr "
 321                 + "id=\"ctdl-msgsum-" + msg["msgnum"] + "\" "
 322                 + (is_selected ? "class=\"ctdl-mail-selected\" " : "")
 323                 + "onClick=\"click_message(event," + msg["msgnum"] + ");\""
 324                 + "onselectstart=\"return false;\" "
 325                 + "draggable=\"true\" "
 326                 + "ondragstart=\"mail_dragstart(event)\" "
 327                 + ">"
 328                 + "<td class=\"ctdl-mail-subject\">" + msg["subject"] + "</td>"
 329                 + "<td class=\"ctdl-mail-sender\">" + msg["author"] + "</td>"
 330                 + "<td class=\"ctdl-mail-date\">" + string_timestamp(msg["time"],1) + "</td>"
 331                 + "<td class=\"ctdl-mail-msgnum\">" + msg["msgnum"] + "</td>"
 332                 + "</tr>";
 333         return(row);
 334 }
 335
 336
 337 // RENDERER FOR THIS VIEW
 338 function view_render_mail() {
 339         // Put the "enter new message" button into the topbar
 340         document.getElementById("ctdl-newmsg-button").innerHTML = `<i class="fa fa-edit"></i>&nbsp;` + _("Write mail");
 341         document.getElementById("ctdl-newmsg-button").style.display = "block";
 342
 343         // Put the "delete message(s)" button into the topbar
 344         let d = document.getElementById("ctdl-delete-button");
 345         d.innerHTML = `<i class="fa fa-trash"></i>&nbsp;` + _("Delete");
 346         d.style.display = "block";
 347         //d.addEventListener("click", mail_delete_selected);
 348
 349         document.getElementById("ctdl-main").innerHTML = `
 350                 <div id="ctdl-mailbox-grid-container" class="ctdl-mailbox-grid-container">
 351                 <div id="ctdl-mailbox-pane" class="ctdl-mailbox-pane"></div>
 352                 <div id="ctdl-mailbox-reading-pane" class="ctdl-mailbox-reading-pane"></div>
 353                 </div>
 354         `;
 355
 356         highest_mailnum = 0;                                    // Keep track of highest msg number to track newly arrived msgs
 357         render_mailbox_display(newmail_notify.NO);
 358         try {                                                   // if this was already set up, clear it so there aren't multiple
 359                 clearInterval(RefreshMailboxInterval);
 360         }
 361         catch {
 362         }
 363         RefreshMailboxInterval = setInterval(refresh_mail_display, 10000);
 364 }
 365
 366
 367 // Refresh the mailbox, either for the first time or whenever needed
 368 function refresh_mail_display() {
 369         // If the "ctdl-mailbox-pane" no longer exists, the user has navigated to a different part of the site,
 370         // so cancel the refresh.
 371         try {
 372                 document.getElementById("ctdl-mailbox-pane").innerHTML;
 373         }
 374         catch {
 375                 clearInterval(RefreshMailboxInterval);
 376                 return;
 377         }
 378
 379         // Ask the server if the room has been written to since our last look at it.
 380         url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/stat";
 381         fetch_stat = async() => {
 382                 response = await fetch(url);
 383                 stat = await(response.json());
 384                 if (stat.room_mtime > room_mtime) {                     // if modified...
 385                         room_mtime = stat.room_mtime;
 386                         render_mailbox_display(newmail_notify.YES);     // ...force a refresh
 387                 }
 388         }
 389         fetch_stat();
 390 }
 391
 392
 393 // This is where the rendering of the message list in the mailbox view is performed.
 394 // Set notify to newmail_notify.NO or newmail_notify.YES depending on whether we are interested in the arrival of new messages.
 395 function render_mailbox_display(notify) {
 396
 397         url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/mailbox";
 398         fetch_mailbox = async() => {
 399                 response = await fetch(url);
 400                 msgs = await(response.json());
 401                 if (response.ok) {
 402                         var previously_selected = [];
 403                         var oldtable = document.getElementById("ctdl-onscreen-mailbox");
 404                         var i, row;
 405
 406                         // If one or more messages was already selected, remember them so we can re-select them
 407                         if ( (displayed_message > 0) && (oldtable) ) {
 408                                 for (i=0; row=oldtable.rows[i]; ++i) {
 409                                         if (row.classList.contains("ctdl-mail-selected")) {
 410                                                 previously_selected.push(parseInt(row["id"].substring(12)));
 411                                         }
 412                                 }
 413                         }
 414
 415                         // begin rendering the mailbox table
 416                         box = `
 417                                 <table id="ctdl-onscreen-mailbox" class="ctdl-mailbox-table" width=100%><tr>
 418                                 <th>${_("Subject")}</th>
 419                                 <th>${ _("Sender")}</th>
 420                                 <th>${_("Date")}</th>
 421                                 <th>#</th>
 422                                 </tr>
 423                         `;
 424
 425                         for (let i=0; i<msgs.length; ++i) {
 426                                 let m = parseInt(msgs[i].msgnum);
 427                                 let s = (previously_selected.includes(m));
 428                                 box += mail_render_row(msgs[i], s);
 429                                 if (m > highest_mailnum) {
 430                                         highest_mailnum = m;
 431                                 }
 432                         }
 433
 434                         box +=  "</table>";
 435                         document.getElementById("ctdl-mailbox-pane").innerHTML = box;
 436                         document.addEventListener("keydown", mail_keypress);
 437                 }
 438         }
 439         fetch_mailbox();
 440 }
 441
 442
 443 // helper function for mail_compose() -- converts a recipient array to a string suitable for the To: or Cc: field
 444 function recipient_array_to_string(recps_arr) {
 445
 446         let returned_string = ""
 447
 448         if (recps_arr) {
 449                 is_reply = 1;
 450
 451                 // first clean up the recipients
 452                 for (i=0; i<recps_arr.length; ++i) {
 453                         recps_arr[i] = recps_arr[i].replaceAll("<", "&lt;").replaceAll(">", "&gt;");
 454                 }
 455
 456                 // remove dupes
 457                 recps_arr = Array.from(new Set(recps_arr));
 458
 459                 // now convert it to a string
 460                 returned_string = "";
 461                 for (i=0; i<recps_arr.length; ++i) {
 462                         if (i > 0) {
 463                                 returned_string += ", ";
 464                         }
 465                         returned_string += recps_arr[i];
 466                 }
 467         }
 468
 469         return(returned_string);
 470 }
 471
 472
 473
 474 // Compose a new mail message (called by the Reply button here, or by the dispatcher in views.js)
 475 //
 476 // references           list of references, be sure to use this in a reply
 477 // quoted_msgnum        if a reply, the msgid of the most recent message in the chain, the one to which we are replying
 478 //                      (set to 0 if this is not a reply)
 479 // m_to                 an ARRAY of zero or more recipients to pre-insert into the To: field
 480 // m_cc                 an ARRAY of zero or more recipients to pre-insert into the Cc: field
 481 // m_subject            a string to pre-insert into the Subject: field
 482 //
 483 function mail_compose(references, quoted_msgnum, m_to, m_cc, m_subject) {
 484
 485         let is_reply = 0;
 486         let is_quoted = (quoted_msgnum > 0) ? true : false ;
 487         let is_fwd = (is_quoted && m_to.length==0 && m_cc.length==0) ;
 488
 489         // m_to will be an array of zero or more recipients for the To: field.  Convert it to a string.
 490         m_to_str = recipient_array_to_string(m_to);
 491
 492         // m_cc will be an array of zero or more recipients for the Cc: field.  Convert it to a string.
 493         m_cc_str = recipient_array_to_string(m_cc);
 494
 495         quoted_div_name = randomString();
 496
 497         // Make the "Write mail" button disappear.  We're already there!
 498         document.getElementById("ctdl-newmsg-button").style.display = "none";
 499
 500         // Now display the screen.  (Yes, I combined regular strings + template literals.
 501         // I just learned template literals.  Converting the whole thing to template literals would be fine.)
 502         compose_screen =
 503                 // Hidden values that we are storing right here in the document tree for later
 504                   "<div id=\"ctdl-mc-references\" style=\"display:none\">" + references + "</div>"
 505
 506                 // Header fields, the composition window, and the button bar are arranged using a Grid layout.
 507                 + "<div id=\"ctdl-compose-mail\" class=\"ctdl-compose-mail\">"
 508
 509                 // Visible To: field, plus a box to make the CC/BCC lines appear
 510                 + "<div class=\"ctdl-compose-to-label\">" + _("To:") + "</div>"
 511                 + "<div class=\"ctdl-compose-to-line\">"
 512                 + "<div class=\"ctdl-compose-to-field\" id=\"ctdl-compose-to-field\" contenteditable=\"true\">" + m_to_str + "</div>"
 513                 + "<div class=\"ctdl-cc-bcc-buttons ctdl-msg-button\" id=\"ctdl-cc-bcc-buttons\" "
 514                 + "onClick=\"make_cc_bcc_visible()\">"
 515                 + _("CC:") + "/" + _("BCC:") + "</div>"
 516                 + "</div>"
 517
 518                 // CC/BCC
 519                 + "<div class=\"ctdl-compose-cc-label\" id=\"ctdl-compose-cc-label\">" + _("CC:") + "</div>"
 520                 + "<div class=\"ctdl-compose-cc-field\" id=\"ctdl-compose-cc-field\" contenteditable=\"true\">" + m_cc_str + "</div>"
 521                 + "<div class=\"ctdl-compose-bcc-label\" id=\"ctdl-compose-bcc-label\">" + _("BCC:") + "</div>"
 522                 + "<div class=\"ctdl-compose-bcc-field\" id=\"ctdl-compose-bcc-field\" contenteditable=\"true\"></div>"
 523
 524                 // Visible subject field
 525                 + "<div class=\"ctdl-compose-subject-label\">" + _("Subject:") + "</div>"
 526                 + "<div class=\"ctdl-compose-subject-field\" id=\"ctdl-compose-subject-field\" contenteditable=\"true\">" + m_subject + "</div>"
 527
 528                 // Message composition box
 529                 + "<div class=\"ctdl-compose-message-box\" id=\"ctdl-editor-body\" contenteditable=\"true\">"
 530         ;
 531
 532         // If this is a quoted reply, insert a div within which we will render the original message.
 533         if (is_quoted && is_fwd) {
 534                 compose_screen += "<br><br>" + _("--- forwarded message ---") + "<br><div id=\"" + quoted_div_name + "\">QUOTE</div>";
 535         }
 536         else if (is_quoted) {
 537                 compose_screen += "<br><br><blockquote><div id=\"" + quoted_div_name + "\">QUOTE</div></blockquote>";
 538         }
 539
 540         // The button bar is a Grid element, and is also a Flexbox container.
 541         compose_screen += `
 542                 </div>
 543                 <div class="ctdl-compose-toolbar">
 544                 <span class="ctdl-msg-button" onclick="mail_send_message()"><i class="fa fa-paper-plane" style="color:green"></i> ${_("Send message")} </span>
 545                 <span class="ctdl-msg-button"> ${_("Save to Drafts")} </span>
 546                 <span class="ctdl-msg-button" onClick="show_or_hide_upload_window()"><i class="fa fa-paperclip" style="color:grey"></i> ${_("Attachments:")} <span id="ctdl_num_attachments"> ${uploads.length} </span></span>
 547                 <span class="ctdl-msg-button">  ${_("Contacts")} </span>
 548                 <span class="ctdl-msg-button" onClick="flush_uploads();gotoroom(current_room)"><i class="fa fa-trash" style="color:red"></i> ${_("Cancel")} </span>
 549                 </div>`
 550         ;
 551
 552
 553         document.getElementById("ctdl-main").innerHTML = compose_screen;
 554
 555         if (m_cc) {
 556                 document.getElementById("ctdl-compose-cc-label").style.display = "block";
 557                 document.getElementById("ctdl-compose-cc-field").style.display = "block";
 558         }
 559
 560         activate_uploads("ctdl-editor-body");                           // create the attachments window
 561         attachment_counter_divs.push("ctdl_num_attachments");           // make the Attachments: count at the bottom update too
 562
 563         // If this is a quoted reply, render the original message into the div we set up earlier.
 564         if (is_quoted) {
 565                 mail_display_message(quoted_msgnum, document.getElementById(quoted_div_name), 0);
 566         }
 567
 568         // If this is a forwarded messages, preload its attachments into the forwarded copy.
 569         if (is_fwd) {
 570                 forward_attachments(quoted_msgnum);
 571         }
 572
 573         if (is_reply) {
 574                 setTimeout(() => { document.getElementById("ctdl-editor-body").focus(); }, 0);
 575         }
 576         else {
 577                 setTimeout(() => { document.getElementById("ctdl-compose-to-field").focus(); }, 0);
 578         }
 579
 580 }
 581
 582 // Called when the user clicks the button to make the hidden "CC" and "BCC" lines appear.
 583 // It is also called automatically during a Reply when CC is pre-populated.
 584 function make_cc_bcc_visible() {
 585         document.getElementById("ctdl-cc-bcc-buttons").style.display = "none";
 586         document.getElementById("ctdl-compose-cc-label").style.display = "block";
 587         document.getElementById("ctdl-compose-cc-field").style.display = "block";
 588         document.getElementById("ctdl-compose-bcc-label").style.display = "block";
 589         document.getElementById("ctdl-compose-bcc-field").style.display = "block";
 590 }
 591
 592
 593 // Helper function for mail_send_messages() to extract and decode metadata values.
 594 function msm_field(element_name, separator) {
 595         let s1 = document.getElementById(element_name).innerHTML;
 596         let s2 = s1.replaceAll("|",separator);          // Replace "|" with "!" because "|" is a field separator in Citadel
 597         let s3 = decodeURI(s2);
 598         let s4 = document.createElement("textarea");    // This One Weird Trick Unescapes All HTML Entities
 599         s4.innerHTML = s3;
 600         let s5 = s4.value;
 601         return(s5);
 602 }
 603
 604
 605 // Save the posted message to the server
 606 function mail_send_message() {
 607
 608         document.body.style.cursor = "wait";
 609         deactivate_uploads();
 610         let url = "/ctdl/r/" + escapeHTMLURI(current_room)
 611                 + "/dummy_name_for_new_mail"
 612                 + "?wefw="      + msm_field("ctdl-mc-references", "!")                          // references (if present)
 613                 + "&subj="      + msm_field("ctdl-compose-subject-field", " ")                  // subject (if present)
 614                 + "&mailto="    + msm_field("ctdl-compose-to-field", ",")                       // To: (required)
 615                 + "&mailcc="    + msm_field("ctdl-compose-cc-field", ",")                       // Cc: (if present)
 616                 + "&mailbcc="   + msm_field("ctdl-compose-bcc-field", ",")                      // Bcc: (if present)
 617         ;
 618         if (uploads.length > 0) {
 619                 url += "&att=";
 620                 for (let i=0; i<uploads.length; ++i) {
 621                         url += uploads[i]["ref"];
 622                         if (i != uploads.length - 1) {
 623                                 url += ",";
 624                         }
 625                 }
 626         }
 627         body_text = "<html><body>" + document.getElementById("ctdl-editor-body").innerHTML + "</body></html>\r\n";
 628
 629         var request = new XMLHttpRequest();
 630         request.open("PUT", url, true);
 631         request.setRequestHeader("Content-type", "text/html");
 632         request.onreadystatechange = function() {
 633                 if (request.readyState == 4) {
 634                         document.body.style.cursor = "default";
 635                         if (Math.trunc(request.status / 100) == 2) {
 636                                 headers = request.getAllResponseHeaders().split("\n");
 637                                 for (var i in headers) {
 638                                         if (headers[i].startsWith("etag: ")) {
 639                                                 new_msg_num = headers[i].split(" ")[1];
 640                                         }
 641                                 }
 642
 643                                 // successfully saving a message means the attachments are now gone from the server.
 644                                 uploads = [];
 645
 646                                 // After saving the message, go back to the mailbox view.
 647                                 gotoroom(current_room);
 648
 649                         }
 650                         else {
 651                                 error_message = request.responseText;
 652                                 if (error_message.length == 0) {
 653                                         error_message = _("An error has occurred.");
 654                                 }
 655                                 alert(error_message);                                           // editor remains open
 656                         }
 657                 }
 658         };
 659         request.send(body_text);
 660 }