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 are 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 var num_attachments = 0;                                                        // number of attachments in current composed msg
  17
  18
  19 // This is the async back end for mail_delete_selected()
  20 mail_delete_func = async(table, row) => {
  21         let m = parseInt(row["id"].substring(12));                              // derive msgnum from row id
  22
  23         if (is_trash_folder) {
  24                 response = await fetch(
  25                         "/ctdl/r/" + escapeHTMLURI(current_room) + "/" + m,
  26                         {
  27                                 method: "DELETE"                                // If this is the Trash folder, delete permanently
  28                         },
  29                 );
  30         }
  31         else {
  32                 response = await fetch(
  33                         "/ctdl/r/" + escapeHTMLURI(current_room) + "/" + m,
  34                         {
  35                                 method: "MOVE",                                 // Otherwise, move to the Trash folder
  36                                 headers: { "Destination" : "/ctdl/r/_TRASH_" }
  37                         },
  38                 );
  39         }
  40
  41         if (response.ok) {                              // If the server accepted the delete, blank out the message div
  42                 table.deleteRow(row.rowIndex);
  43                 if (m == displayed_message) {
  44                         document.getElementById("ctdl-mailbox-reading-pane").innerHTML = "";
  45                         displayed_message = 0;
  46                 }
  47         }
  48 }
  49
  50
  51 // Delete the selected messages (can be activated by mouse click or keypress)
  52 function mail_delete_selected() {
  53         let table = document.getElementById("ctdl-onscreen-mailbox");
  54         let i, row;
  55         for (i=0; row=table.rows[i]; ++i) {
  56                 if (row.classList.contains("ctdl-mail-selected")) {
  57                         mail_delete_func(table, row);
  58                 }
  59         }
  60 }
  61
  62
  63 // Handler function for keypresses detected while the mail view is displayed.  Mainly for deleting messages.
  64 function mail_keypress(event) {
  65
  66         // If the "ctdl-mailbox-pane" no longer exists, the user has navigated to a different part of the site,
  67         // so cancel the event listener.
  68         try {
  69                 document.getElementById("ctdl-mailbox-pane").innerHTML;
  70         }
  71         catch {
  72                 document.removeEventListener("keydown", mail_keypress);
  73                 return;
  74         }
  75
  76         const key = event.key.toLowerCase();
  77         if (key == "delete") {
  78                 mail_delete_selected();
  79         }
  80
  81 }
  82
  83
  84 // Handler function for dragging email messages to other folders
  85 function mail_dragstart(event) {
  86         let i;
  87         let count = 0;
  88         let table = document.getElementById("ctdl-onscreen-mailbox");
  89         let messages_being_dragged = [] ;
  90
  91         if (event.target.classList.contains("ctdl-mail-selected")) {
  92                 // The row being dragged IS selected.  See if any OTHER rows are selected, and they will come along for the ride.
  93                 for (i=1; row=table.rows[i]; ++i) {
  94                         if (row.classList.contains("ctdl-mail-selected")) {
  95                                 count = count + 1;
  96                                 messages_being_dragged.push(row.id);    // Tell the clipboard what's being moved.
  97                         }
  98                 }
  99         }
 100         else {
 101                 // The row being dragged is NOT selected.  It will be dragged on its own, ignoring the selected rows.
 102                 count = 1;
 103                 messages_being_dragged.push(event.target.id);           // Tell the clipboard what's being moved.
 104         }
 105
 106         // Set the custom drag image to an envelope + number of messages being dragged
 107         d = document.getElementById("ctdl_draggo");
 108         d.innerHTML = "<font size='+2'><i class='fa fa-envelope' style='color: red'></i> " + count + "</font>"
 109         event.dataTransfer.setDragImage(d, 0, 0);
 110         event.dataTransfer.setData("text", messages_being_dragged);
 111 }
 112
 113
 114 // Render reply address for a message (FIXME figure out how to deal with "reply-to:")
 115 function reply_addr(msg) {
 116         //if (msg.locl) {
 117                 //return([msg.from]);
 118         //}
 119         //else {
 120                 return([msg.from + " &lt;" + msg.rfca + "&gt;"]);
 121         //}
 122 }
 123
 124
 125 // Render the To: recipients for a reply-all operation
 126 function replyall_to(msg) {
 127         return([...reply_addr(msg), ...msg.rcpt]);
 128 }
 129
 130
 131 // Render a message into the mailbox view
 132 // (We want the message number and the message itself because we need to keep the msgnum for reply purposes)
 133 function mail_render_one(msgnum, msg, target_div, include_controls) {
 134         let div = "";
 135         try {
 136                 outmsg =
 137                   "<div class=\"ctdl-mmsg-wrapper\">"                           // begin message wrapper
 138                 ;
 139
 140                 if (include_controls) {                                         // omit controls if this is a pull quote
 141                         outmsg +=
 142                           render_userpic(msg.from)                              // user avatar
 143                         + "<div class=\"ctdl-mmsg-content\">"                   // begin content
 144                         + "<div class=\"ctdl-msg-header\">"                     // begin header
 145                         + "<span class=\"ctdl-msg-header-info\">"               // begin header info on left side
 146                         + render_msg_author(msg, views.VIEW_MAILBOX)
 147                         + "<span class=\"ctdl-msgdate\">"
 148                         + string_timestamp(msg.time,0)
 149                         + "</span>"                                             // end msgdate
 150                         + "</span>"                                             // end header info on left side
 151                         + "<span class=\"ctdl-msg-header-buttons\">"            // begin buttons on right side
 152
 153                         + "<span class=\"ctdl-msg-button\">"                    // Reply (mail is always Quoted)
 154                         + "<a href=\"javascript:mail_compose(true,'"+msg.wefw+"','"+msgnum+"', reply_addr(msg), [], 'Re: '+msg.subj);\">"
 155                         + "<i class=\"fa fa-reply\"></i> "
 156                         + _("Reply")
 157                         + "</a></span>"
 158
 159                         + "<span class=\"ctdl-msg-button\">"                    // Reply-All (mail is always Quoted)
 160                         + "<a href=\"javascript:mail_compose(true,'"+msg.wefw+"','"+msgnum+"', replyall_to(msg), msg.cccc, 'Re: '+msg.subj);\">"
 161                         + "<i class=\"fa fa-reply-all\"></i> "
 162                         + _("ReplyAll")
 163                         + "</a></span>";
 164
 165                         if (can_delete_messages) {
 166                                 outmsg +=
 167                                 "<span class=\"ctdl-msg-button\">"
 168                                 + "<a href=\"javascript:forum_delete_message('"+div+"','"+msg.msgnum+"');\">"
 169                                 + "<i class=\"fa fa-trash\"></i> "
 170                                 + _("Delete")
 171                                 + "</a></span>";
 172                         }
 173
 174                         outmsg +=
 175                           "</span>";                                            // end buttons on right side
 176
 177                         // Display the To: recipients, if any are present
 178                         if (msg.rcpt) {
 179                                 outmsg += "<br><span>" + _("To:") + " ";
 180                                 for (let r=0; r<msg.rcpt.length; ++r) {
 181                                         if (r != 0) {
 182                                                 outmsg += ", ";
 183                                         }
 184                                         outmsg += escapeHTML(msg.rcpt[r]);
 185                                 }
 186                                 outmsg += "</span>";
 187                         }
 188
 189                         // Display the Cc: recipients, if any are present
 190                         if (msg.cccc) {
 191                                 outmsg += "<br><span>" + _("Cc:") + " ";
 192                                 for (let r=0; r<msg.cccc.length; ++r) {
 193                                         if (r != 0) {
 194                                                 outmsg += ", ";
 195                                         }
 196                                         outmsg += escapeHTML(msg.cccc[r]);
 197                                 }
 198                                 outmsg += "</span>";
 199                         }
 200
 201                         // Display a subject line, but only if the message has a subject (internal Citadel messages often don't)
 202                         if (msg.subj) {
 203                                 outmsg +=
 204                                 "<br><span class=\"ctdl-msgsubject\">" + msg.subj + "</span>";
 205                         }
 206
 207                         outmsg +=
 208                           "</div>";                                             // end header
 209                 }
 210
 211                 // Display attachments, if any are present
 212                 if (msg.part) {
 213                         let display_attachments = 0;
 214                         for (let r=0; r<msg.part.length; ++r) {
 215                                 if (msg.part[r].disp == "attachment") {
 216                                         if (display_attachments == 0) {
 217                                                 outmsg += "<ul>";
 218                                         }
 219                                         display_attachments += 1;
 220                                         outmsg += "<li>"
 221                                                 + "<a href=\"/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgnum + "/" + msg.part[r].partnum + "/" + escapeHTMLURI(msg.part[r].filename) + "\" target=\"_blank\">"
 222                                                 + "<i class=\"fa fa-paperclip\"></i>&nbsp;" + msg.part[r].partnum + ": " + msg.part[r].filename
 223                                                 + " (" + msg.part[r].len + " " + _("bytes") + ")"
 224                                                 + "</a>"
 225                                                 + "</li>";
 226                                 }
 227                         }
 228                         if (display_attachments > 0) {
 229                                 outmsg += "</ul><br>";
 230                         }
 231                 }
 232
 233
 234                 outmsg +=
 235                   "<div class=\"ctdl-msg-body\" id=\"" + div + "_body\">"       // begin body
 236                 + msg.text
 237                 + "</div>"                                                      // end body
 238                 + "</div>"                                                      // end content
 239                 + "</div>"                                                      // end wrapper
 240                 ;
 241         }
 242         catch(err) {
 243                 outmsg = "<div class=\"ctdl-mmsg-wrapper\">" + err.message + "</div>";
 244         }
 245
 246         target_div.innerHTML = outmsg;
 247 }
 248
 249
 250 // display an individual message (note: this wants an actual div object, not a string containing the name of a div)
 251 function mail_display_message(msgnum, target_div, include_controls) {
 252         url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgnum + "/json";
 253         mail_fetch_msg = async() => {
 254                 response = await fetch(url);
 255                 msg = await(response.json());
 256                 if (response.ok) {
 257                         mail_render_one(msgnum, msg, target_div, include_controls);
 258                 }
 259         }
 260         mail_fetch_msg();
 261 }
 262
 263
 264 // A message has been selected...
 265 function click_message(event, msgnum) {
 266         var table = document.getElementById("ctdl-onscreen-mailbox");
 267         var i, m, row;
 268
 269         // ctrl + click = toggle an individual message without changing existing selection
 270         if (event.ctrlKey) {
 271                 document.getElementById("ctdl-msgsum-" + msgnum).classList.toggle("ctdl-mail-selected");
 272         }
 273
 274         // shift + click = select a range of messages (start with row 1 because row 0 is the header)
 275         else if (event.shiftKey) {
 276                 for (i=1; row=table.rows[i]; ++i) {
 277                         m = parseInt(row["id"].substring(12));                          // derive msgnum from row id
 278                         if (
 279                                 ((msgnum >= displayed_message) && (m >= displayed_message) && (m <= msgnum))
 280                                 || ((msgnum <= displayed_message) && (m <= displayed_message) && (m >= msgnum))
 281                         ) {
 282                                 row.classList.add("ctdl-mail-selected");
 283                         }
 284                         else {
 285                                 row.classList.remove("ctdl-mail-selected");
 286                         }
 287                 }
 288         }
 289
 290         // click + no modifiers = select one message and unselect all others (start with row 1 because row 0 is the header)
 291         else {
 292                 for (i=1; row=table.rows[i]; ++i) {
 293                         if (row["id"] == "ctdl-msgsum-" + msgnum) {
 294                                 row.classList.add("ctdl-mail-selected");
 295                         }
 296                         else {
 297                                 row.classList.remove("ctdl-mail-selected");
 298                         }
 299                 }
 300         }
 301
 302         // display the message if it isn't already displayed
 303         if (displayed_message != msgnum) {
 304                 displayed_message = msgnum;
 305                 mail_display_message(msgnum, document.getElementById("ctdl-mailbox-reading-pane"), 1);
 306         }
 307 }
 308
 309
 310 // render one row in the mailbox table (this could be called from one of several places)
 311 function mail_render_row(msg, is_selected) {
 312         let row = "<tr "
 313                 + "id=\"ctdl-msgsum-" + msg["msgnum"] + "\" "
 314                 + (is_selected ? "class=\"ctdl-mail-selected\" " : "")
 315                 + "onClick=\"click_message(event," + msg["msgnum"] + ");\""
 316                 + "onselectstart=\"return false;\" "
 317                 + "draggable=\"true\" "
 318                 + "ondragstart=\"mail_dragstart(event)\" "
 319                 + ">"
 320                 + "<td class=\"ctdl-mail-subject\">" + msg["subject"] + "</td>"
 321                 + "<td class=\"ctdl-mail-sender\">" + msg["author"] + "</td>"
 322                 + "<td class=\"ctdl-mail-date\">" + string_timestamp(msg["time"],1) + "</td>"
 323                 + "<td class=\"ctdl-mail-msgnum\">" + msg["msgnum"] + "</td>"
 324                 + "</tr>";
 325         return(row);
 326 }
 327
 328
 329 // RENDERER FOR THIS VIEW
 330 function view_render_mail() {
 331         // Put the "enter new message" button into the topbar
 332         document.getElementById("ctdl-newmsg-button").innerHTML = "<i class=\"fa fa-edit\"></i>" + _("Write mail");
 333         document.getElementById("ctdl-newmsg-button").style.display = "block";
 334
 335         // Put the "delete message(s)" button into the topbar
 336         let d = document.getElementById("ctdl-delete-button");
 337         d.innerHTML = "<i class=\"fa fa-trash\"></i>" + _("Delete");
 338         d.style.display = "block";
 339         //d.addEventListener("click", mail_delete_selected);
 340
 341         document.getElementById("ctdl-main").innerHTML
 342                 = "<div id=\"ctdl-mailbox-grid-container\" class=\"ctdl-mailbox-grid-container\">"
 343                 + "<div id=\"ctdl-mailbox-pane\" class=\"ctdl-mailbox-pane\"></div>"
 344                 + "<div id=\"ctdl-mailbox-reading-pane\" class=\"ctdl-mailbox-reading-pane\"></div>"
 345                 + "</div>"
 346         ;
 347
 348         highest_mailnum = 0;                                    // Keep track of highest message number to track newly arrived messages
 349         render_mailbox_display(newmail_notify.NO);
 350         try {                                                   // if this was already set up, clear it so there aren't multiple
 351                 clearInterval(RefreshMailboxInterval);
 352         }
 353         catch {
 354         }
 355         RefreshMailboxInterval = setInterval(refresh_mail_display, 10000);
 356 }
 357
 358
 359 // Refresh the mailbox, either for the first time or whenever needed
 360 function refresh_mail_display() {
 361         // If the "ctdl-mailbox-pane" no longer exists, the user has navigated to a different part of the site,
 362         // so cancel the refresh.
 363         try {
 364                 document.getElementById("ctdl-mailbox-pane").innerHTML;
 365         }
 366         catch {
 367                 clearInterval(RefreshMailboxInterval);
 368                 return;
 369         }
 370
 371         // Ask the server if the room has been written to since our last look at it.
 372         url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/stat";
 373         fetch_stat = async() => {
 374                 response = await fetch(url);
 375                 stat = await(response.json());
 376                 if (stat.room_mtime > room_mtime) {                     // FIXME commented out to force refreshes
 377                         room_mtime = stat.room_mtime;
 378                         render_mailbox_display(newmail_notify.YES);
 379                 }
 380         }
 381         fetch_stat();
 382 }
 383
 384
 385 // This is where the rendering of the message list in the mailbox view is performed.
 386 // Set notify to newmail_notify.NO or newmail_notify.YES depending on whether we are interested in the arrival of new messages.
 387 function render_mailbox_display(notify) {
 388
 389         url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/mailbox";
 390         fetch_mailbox = async() => {
 391                 response = await fetch(url);
 392                 msgs = await(response.json());
 393                 if (response.ok) {
 394                         var previously_selected = [];
 395                         var oldtable = document.getElementById("ctdl-onscreen-mailbox");
 396                         var i, row;
 397
 398                         // If one or more messages was already selected, remember them so we can re-select them
 399                         if ( (displayed_message > 0) && (oldtable) ) {
 400                                 for (i=0; row=oldtable.rows[i]; ++i) {
 401                                         if (row.classList.contains("ctdl-mail-selected")) {
 402                                                 previously_selected.push(parseInt(row["id"].substring(12)));
 403                                         }
 404                                 }
 405                         }
 406
 407                         // begin rendering the mailbox table
 408                         box =   "<table id=\"ctdl-onscreen-mailbox\" class=\"ctdl-mailbox-table\" width=100%><tr>"
 409                                 + "<th>" + _("Subject") + "</th>"
 410                                 + "<th>" + _("Sender") + "</th>"
 411                                 + "<th>" + _("Date") + "</th>"
 412                                 + "<th>#</th>"
 413                                 + "</tr>";
 414
 415                         for (let i=0; i<msgs.length; ++i) {
 416                                 let m = parseInt(msgs[i].msgnum);
 417                                 let s = (previously_selected.includes(m));
 418                                 box += mail_render_row(msgs[i], s);
 419                                 if (m > highest_mailnum) {
 420                                         highest_mailnum = m;
 421                                 }
 422                         }
 423
 424                         box +=  "</table>";
 425                         document.getElementById("ctdl-mailbox-pane").innerHTML = box;
 426                         document.addEventListener("keydown", mail_keypress);
 427                 }
 428         }
 429         fetch_mailbox();
 430 }
 431
 432
 433 // Compose a new mail message (called by the Reply button here, or by the dispatcher in views.js)
 434 function mail_compose(is_quoted, references, quoted_msgnum, m_to, m_cc, m_subject) {
 435         // m_to will be an array of zero or more recipients for the To: field.  Convert it to a string.
 436         if (m_to) {
 437                 m_to = Array.from(new Set(m_to));       // remove dupes
 438                 m_to_str = "";
 439                 for (i=0; i<m_to.length; ++i) {
 440                         if (i > 0) {
 441                                 m_to_str += ", ";
 442                         }
 443                         m_to_str += m_to[i].replaceAll("<", "&lt;").replaceAll(">", "&gt;");
 444                 }
 445         }
 446         else {
 447                 m_to_str = "";
 448         }
 449
 450         // m_to will be an array of zero or more recipients for the Cc: field.  Convert it to a string.
 451         if (m_cc) {
 452                 m_cc = Array.from(new Set(m_cc));       // remove dupes
 453                 m_cc_str = "";
 454                 for (i=0; i<m_cc.length; ++i) {
 455                         if (i > 0) {
 456                                 m_cc_str += ", ";
 457                         }
 458                         m_cc_str += m_cc[i].replaceAll("<", "&lt;").replaceAll(">", "&gt;");
 459                 }
 460         }
 461         else {
 462                 m_cc_str = "";
 463         }
 464
 465         quoted_div_name = randomString();
 466
 467         // Make the "Write mail" button disappear.  We're already there!
 468         document.getElementById("ctdl-newmsg-button").style.display = "none";
 469
 470         // is_quoted    true or false depending on whether the user selected "reply quoted" (is this appropriate for mail?)
 471         // references   list of references, be sure to use this in a reply
 472         // msgid        if a reply, the msgid of the most recent message in the chain, the one to which we are replying
 473
 474         // Now display the screen.
 475         compose_screen =
 476                 // Hidden values that we are storing right here in the document tree for later
 477                   "<input id=\"ctdl_mc_is_quoted\" style=\"display:none\" value=\"" + is_quoted + "\"></input>"
 478                 + "<input id=\"ctdl_mc_references\" style=\"display:none\" value=\"" + references + "\"></input>"
 479
 480                 // Header fields, the composition window, and the button bar are arranged using a Grid layout.
 481                 + "<div id=\"ctdl-compose-mail\" class=\"ctdl-compose-mail\">"
 482
 483                 // Visible To: field, plus a box to make the CC/BCC lines appear
 484                 + "<div class=\"ctdl-compose-to-label\">" + _("To:") + "</div>"
 485                 + "<div class=\"ctdl-compose-to-line\">"
 486                 + "<div class=\"ctdl-compose-to-field\" id=\"ctdl-compose-to-field\" contenteditable=\"true\">" + m_to_str + "</div>"
 487                 + "<div class=\"ctdl-cc-bcc-buttons ctdl-msg-button\" id=\"ctdl-cc-bcc-buttons\" "
 488                 + "onClick=\"make_cc_bcc_visible()\">"
 489                 + _("CC:") + "/" + _("BCC:") + "</div>"
 490                 + "</div>"
 491
 492                 // CC/BCC
 493                 + "<div class=\"ctdl-compose-cc-label\" id=\"ctdl-compose-cc-label\">" + _("CC:") + "</div>"
 494                 + "<div class=\"ctdl-compose-cc-field\" id=\"ctdl-compose-cc-field\" contenteditable=\"true\">" + m_cc_str + "</div>"
 495                 + "<div class=\"ctdl-compose-bcc-label\" id=\"ctdl-compose-bcc-label\">" + _("BCC:") + "</div>"
 496                 + "<div class=\"ctdl-compose-bcc-field\" id=\"ctdl-compose-bcc-field\" contenteditable=\"true\"></div>"
 497
 498                 // Visible subject field
 499                 + "<div class=\"ctdl-compose-subject-label\">" + _("Subject:") + "</div>"
 500                 + "<div class=\"ctdl-compose-subject-field\" id=\"ctdl-compose-subject-field\" contenteditable=\"true\">" + m_subject + "</div>"
 501
 502                 // Message composition box
 503                 + "<div class=\"ctdl-compose-message-box\" id=\"ctdl-editor-body\" contenteditable=\"true\">"
 504         ;
 505
 506         if (is_quoted) {
 507                 compose_screen += "<br><br><blockquote><div id=\"" + quoted_div_name + "\"></div></blockquote>";
 508         }
 509
 510         compose_screen +=
 511                   "</div>"
 512
 513                 // The button bar is a Grid element, and is also a Flexbox container.
 514                 + "<div class=\"ctdl-compose-toolbar\">"
 515                 + "<span class=\"ctdl-msg-button\" onclick=\"mail_send_message()\"><i class=\"fa fa-paper-plane\" style=\"color:green\"></i> " + _("Send message") + "</span>"
 516                 + "<span class=\"ctdl-msg-button\">" + _("Save to Drafts") + "</span>"
 517                 + "<span class=\"ctdl-msg-button\" onClick=\"show_or_hide_attachments()\"><i class=\"fa fa-paperclip\" style=\"color:grey\"></i> " + _("Attachments:") + " <span id=\"ctdl_num_attachments\">" + num_attachments + "</span></span>"
 518                 + "<span class=\"ctdl-msg-button\">" + _("Contacts") + "</span>"
 519                 + "<span class=\"ctdl-msg-button\" onClick=\"document.getElementById('ctdl_big_modal').style.display='none';gotoroom(current_room)\"><i class=\"fa fa-trash\" style=\"color:red\"></i> " + _("Cancel") + "</span>"
 520                 + "</div>"
 521         ;
 522
 523         document.getElementById("ctdl-main").innerHTML = compose_screen;
 524         mail_display_message(quoted_msgnum, document.getElementById(quoted_div_name), 0);
 525         if (m_cc) {
 526                 document.getElementById("ctdl-compose-cc-label").style.display = "block";
 527                 document.getElementById("ctdl-compose-cc-field").style.display = "block";
 528         }
 529
 530         // Now the compose screen is set up properly; set up the attachments modal in case the user wants it
 531
 532         document.getElementById("ctdl_big_modal").innerHTML = ""
 533                 + "<div id=\"ctdl_attachments_outer\">"
 534                 + "<div id=\"ctdl_attachments_title\" class=\"ctdl-compose-attachments-title\">"
 535                 + "<div><h1><i class=\"fa fa-paperclip\" style=\"color:grey\"></i> " + _("Attachments:") + "</h1></div>"
 536                 + "<div><h1><i class=\"fas fa-window-close\" style=\"color:red\" onClick=\"show_or_hide_attachments()\"></i></h1></div>"
 537                 + "</div>"
 538                 + "<br>"
 539                 + "this is the attachments modal.  there are many like it, but this one is mine."
 540                 + "</div>"
 541         ;
 542
 543 }
 544
 545
 546 // Show or hide the attachments window in the composer
 547 function show_or_hide_attachments() {
 548
 549         if (document.getElementById("ctdl_big_modal").style.display == "block") {
 550                 document.getElementById("ctdl_big_modal").style.display = "none";
 551         }
 552         else {
 553                 document.getElementById("ctdl_big_modal").style.display = "block";
 554                 document.getElementById("ctdl_attachments_outer").style.width =
 555                         Math.trunc((document.getElementById("ctdl-editor-body").getBoundingClientRect().width) * 0.90).toString() + "px";
 556                 document.getElementById("ctdl_attachments_outer").style.height =
 557                         Math.trunc((document.getElementById("ctdl-editor-body").getBoundingClientRect().height) * 0.90).toString() + "px";
 558         }
 559
 560 }
 561
 562
 563 // Called when the user clicks the button to make the hidden "CC" and "BCC" lines appear.
 564 // It is also called automatically during a Reply when CC is pre-populated.
 565 function make_cc_bcc_visible() {
 566         document.getElementById("ctdl-cc-bcc-buttons").style.display = "none";
 567         document.getElementById("ctdl-compose-bcc-label").style.display = "block";
 568         document.getElementById("ctdl-compose-bcc-field").style.display = "block";
 569 }
 570
 571
 572 // Helper function for mail_send_messages() to extract and decode metadata values.
 573 function msm_field(element_name, separator) {
 574         let s1 = document.getElementById(element_name).innerHTML;
 575         let s2 = s1.replaceAll("|",separator);          // Replace "|" with "!" because "|" is a field separator in Citadel
 576         let s3 = decodeURI(s2);
 577         let s4 = document.createElement("textarea");    // This One Weird Trick Unescapes All HTML Entities
 578         s4.innerHTML = s3;
 579         let s5 = s4.value;
 580         return(s5);
 581 }
 582
 583
 584 // Save the posted message to the server
 585 function mail_send_message() {
 586
 587         document.body.style.cursor = "wait";
 588         let url = "/ctdl/r/" + escapeHTMLURI(current_room)
 589                 + "/dummy_name_for_new_mail"
 590                 + "?wefw="      + msm_field("ctdl_mc_references", "!")                          // references (if present)
 591                 + "&subj="      + msm_field("ctdl-compose-subject-field", " ")                  // subject (if present)
 592                 + "&mailto="    + msm_field("ctdl-compose-to-field", ",")                       // To: (required)
 593                 + "&mailcc="    + msm_field("ctdl-compose-cc-field", ",")                       // Cc: (if present)
 594                 + "&mailbcc="   + msm_field("ctdl-compose-bcc-field", ",")                      // Bcc: (if present)
 595         ;
 596         boundary = randomString();
 597         body_text =
 598                 "--" + boundary + "\r\n"
 599                 + "Content-type: text/html\r\n"
 600                 + "Content-transfer-encoding: quoted-printable\r\n"
 601                 + "\r\n"
 602                 + quoted_printable_encode(
 603                         "<html><body>" + document.getElementById("ctdl-editor-body").innerHTML + "</body></html>"
 604                 ) + "\r\n"
 605                 + "--" + boundary + "--\r\n"
 606         ;
 607
 608         var request = new XMLHttpRequest();
 609         request.open("PUT", url, true);
 610         request.setRequestHeader("Content-type", "multipart/mixed; boundary=\"" + boundary + "\"");
 611         request.onreadystatechange = function() {
 612                 if (request.readyState == 4) {
 613                         document.body.style.cursor = "default";
 614                         if (Math.trunc(request.status / 100) == 2) {
 615                                 headers = request.getAllResponseHeaders().split("\n");
 616                                 for (var i in headers) {
 617                                         if (headers[i].startsWith("etag: ")) {
 618                                                 new_msg_num = headers[i].split(" ")[1];
 619                                         }
 620                                 }
 621
 622                                 // After saving the message, go back to the mailbox view.
 623                                 gotoroom(current_room);
 624
 625                         }
 626                         else {
 627                                 error_message = request.responseText;
 628                                 if (error_message.length == 0) {
 629                                         error_message = _("An error has occurred.");
 630                                 }
 631                                 alert(error_message);                                           // editor remains open
 632                         }
 633                 }
 634         };
 635         request.send(body_text);
 636 }