webcit-ng/static/js/views.js

   1 //
   2 // Copyright (c) 2016-2020 by the citadel.org team
   3 //
   4 // This program is open source software.  It runs great on the
   5 // Linux operating system (and probably elsewhere).  You can use,
   6 // copy, and run it under the terms of the GNU General Public
   7 // License version 3.  Richard Stallman is an asshole communist.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14
  15 // List of defined views shamelessly swiped from libcitadel headers
  16 //
  17 var views = {
  18         VIEW_BBS                : 0,    /* Bulletin board view */
  19         VIEW_MAILBOX            : 1,    /* Mailbox summary */
  20         VIEW_ADDRESSBOOK        : 2,    /* Address book view */
  21         VIEW_CALENDAR           : 3,    /* Calendar view */
  22         VIEW_TASKS              : 4,    /* Tasks view */
  23         VIEW_NOTES              : 5,    /* Notes view */
  24         VIEW_WIKI               : 6,    /* Wiki view */
  25         VIEW_CALBRIEF           : 7,    /* Brief Calendar view */
  26         VIEW_JOURNAL            : 8,    /* Journal view */
  27         VIEW_DRAFTS             : 9,    /* Drafts view */
  28         VIEW_BLOG               : 10,   /* Blog view */
  29         VIEW_QUEUE              : 11,   /* SMTP QUEUE rooms */
  30         VIEW_WIKIMD             : 12,   /* Markdown Wiki view */
  31 };
  32
  33
  34 // This function is the dispatcher that determines the correct view for a room,
  35 // and calls the correct renderer.  Greater/Less than bounds are accepted.
  36 //
  37 function render_room_view(gt_msg, lt_msg)
  38 {
  39         switch(current_view) {
  40                 case views.VIEW_MAILBOX:                                                // FIXME view mail rooms as forums for now
  41                 case views.VIEW_BBS:
  42                         forum_readmessages("ctdl-main", gt_msg, lt_msg);
  43                         break;
  44                 default:
  45                         document.getElementById("ctdl-main").innerHTML =
  46                                 "The view for " + current_room + " is " + current_view + " but there is no renderer." ;
  47                         break;
  48         }
  49
  50 }
  51
  52
  53 // Forum view (flat) -- let's have another go at this with the rendering done client-side
  54 //
  55 function forum_readmessages(target_div, gt_msg, lt_msg)
  56 {
  57         original_text = document.getElementById(target_div).innerHTML;          // in case we need to replace it after an error
  58         document.getElementById(target_div).innerHTML =
  59                 "<div align=\"center\"><i class=\"fas fa-spinner fa-spin\"></i>&nbsp;&nbsp;"
  60                 + _("Loading messages from server, please wait") + "</div>";
  61
  62         if (lt_msg < 9999999999) {
  63                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.lt|" + lt_msg;
  64         }
  65         else {
  66                 url = "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.gt|" + gt_msg;
  67         }
  68
  69         fetch_msg_list = async() => {
  70                 response = await fetch(url);
  71                 msgs = await(response.json());
  72                 if (response.ok) {
  73                         document.getElementById(target_div).innerHTML = "" ;
  74
  75                         // If we were given an explicit starting point, by all means start there.
  76                         // Note that we don't have to remove them from the array because we did a 'msgs gt|xxx' command to Citadel.
  77                         if (gt_msg > 0) {
  78                                 msgs = msgs.slice(0, messages_per_page);
  79                         }
  80
  81                         // Otherwise, show us the last 20 messages
  82                         else {
  83                                 if (msgs.length > messages_per_page) {
  84                                         msgs = msgs.slice(msgs.length - messages_per_page);
  85                                 }
  86                                 new_old_div_name = randomString(5);
  87                                 if (msgs.length < 1) {
  88                                         newlt = lt_msg;
  89                                 }
  90                                 else {
  91                                         newlt = msgs[0];
  92                                 }
  93                                 document.getElementById(target_div).innerHTML +=
  94                                         "<div id=\"" + new_old_div_name + "\">" +
  95                                         "<div align=\"center\">" +
  96                                         "<a href=\"javascript:forum_readmessages('" + new_old_div_name + "', 0, " + newlt + ");\">" +
  97                                         "<i class=\"fa fa-arrow-circle-up\"></i>&nbsp;&nbsp;" +
  98                                         _("Older posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-up\"></a></div></div></a></div></div>" ;
  99                         }
 100
 101                         // Render an empty div for each message.  We will fill them in later.
 102                         for (var i in msgs) {
 103                                 document.getElementById(target_div).innerHTML += "<div id=\"ctdl_msg_" + msgs[i] + "\"> </div>" ;
 104                                 document.getElementById("ctdl_msg_"+msgs[i]).style.display = "none";
 105                         }
 106                         if (lt_msg == 9999999999) {
 107                                 new_new_div_name = randomString(5);
 108                                 if (msgs.length <= 0) {
 109                                         newgt = gt_msg;
 110                                 }
 111                                 else {
 112                                         newgt = msgs[msgs.length-1];
 113                                 }
 114                                 document.getElementById(target_div).innerHTML +=
 115                                         "<div id=\"" + new_new_div_name + "\">" +
 116                                         "<div align=\"center\">" +
 117                                         "<a href=\"javascript:forum_readmessages('" + new_new_div_name + "', " + newgt + ", 9999999999);\">" +
 118                                         "<i class=\"fa fa-arrow-circle-down\"></i>&nbsp;&nbsp;" +
 119                                         _("Newer posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-down\"></a></div></div>" ;
 120                         }
 121
 122                         // Now figure out where to scroll to after rendering.
 123                         if (gt_msg > 0) {
 124                                 scroll_to = msgs[0];
 125                         }
 126                         else if (lt_msg < 9999999999) {
 127                                 scroll_to = msgs[msgs.length-1];
 128                         }
 129                         else if ( (logged_in) && (gt_msg == 0) && (lt_msg == 9999999999) ) {
 130                                 scroll_to = msgs[msgs.length-1];
 131                         }
 132                         else {
 133                                 scroll_to = msgs[0];            // FIXME this is too naive
 134                         }
 135
 136                         // Render the individual messages in the divs
 137                         forum_render_messages(msgs, "ctdl_msg_", scroll_to)
 138                 }
 139                 else {
 140                         // if xhr fails, this will make the link reappear so the user can try again
 141                         document.getElementById(target_div).innerHTML = original_text;
 142                 }
 143         }
 144         fetch_msg_list();
 145 }
 146
 147
 148 // Render a range of messages, with the div prefix specified
 149 //
 150 function forum_render_messages(msgs, prefix, scroll_to)
 151 {
 152         for (i=0; i<msgs.length; ++i) {
 153                 forum_render_one(prefix+msgs[i], msgs[i], scroll_to);
 154         }
 155 }
 156
 157
 158 // We have to put each XHR for forum_render_messages() into its own stack frame, otherwise it jumbles them together.  I don't know why.
 159 function forum_render_one(div, msgnum, scroll_to) {
 160         fetch_message = async() => {
 161                 response = await fetch("/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgs[i] + "/json");
 162                 msg = await response.json();
 163                 if (response.ok) {
 164
 165                         document.getElementById(div).innerHTML =
 166                           "<div class=\"ctdl-msg-wrapper\">"                            // begin message wrapper
 167                         + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 168                         + "<img src=\"/ctdl/u/" + msg.from + "/userpic\" width=\"32\" "
 169                         + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 170                         + "</div>"                                                      // end avatar
 171                         + "<div class=\"ctdl-msg-content\">"                            // begin content
 172                         + "<div class=\"ctdl-msg-header\">"                             // begin header
 173                         + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 174                         + msg.from
 175                         + "</a></span> "
 176                         + "<span class=\"ctdl-msgdate\">"
 177                         + msg.time
 178                         + "</span> "
 179                         + "</div>"                                                      // end header
 180                         + "<div>"                                                       // begin body
 181                         + msg.text
 182                         + "</div>"                                                      // end body
 183                         + "</div>"                                                      // end content
 184                         + "</div>"                                                      // end wrapper
 185                         ;
 186                 }
 187                 else {
 188                         document.getElementById(div).innerHTML = "ERROR";
 189                 }
 190                 document.getElementById(div).style.display  = "inline";
 191                 if (msgnum == scroll_to) {
 192                         window.location.hash = div;
 193                 }
 194         }
 195         fetch_message();
 196 }
 197