webcit-ng/static/js/views.js

   1 //
   2 // Copyright (c) 2016-2019 by the citadel.org team
   3 //
   4 // This program is open source software; you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License version 3.
   6 //
   7 // This program is distributed in the hope that it will be useful,
   8 // but WITHOUT ANY WARRANTY; without even the implied warranty of
   9 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10 // GNU General Public License for more details.
  11
  12
  13 // List of defined views shamelessly swiped from libcitadel headers
  14 //
  15 var views = {
  16         VIEW_BBS                : 0,    /* Bulletin board view */
  17         VIEW_MAILBOX            : 1,    /* Mailbox summary */
  18         VIEW_ADDRESSBOOK        : 2,    /* Address book view */
  19         VIEW_CALENDAR           : 3,    /* Calendar view */
  20         VIEW_TASKS              : 4,    /* Tasks view */
  21         VIEW_NOTES              : 5,    /* Notes view */
  22         VIEW_WIKI               : 6,    /* Wiki view */
  23         VIEW_CALBRIEF           : 7,    /* Brief Calendar view */
  24         VIEW_JOURNAL            : 8,    /* Journal view */
  25         VIEW_DRAFTS             : 9,    /* Drafts view */
  26         VIEW_BLOG               : 10,   /* Blog view */
  27         VIEW_QUEUE              : 11,   /* SMTP QUEUE rooms */
  28         VIEW_WIKIMD             : 12,   /* Markdown Wiki view */
  29 };
  30
  31
  32 // This function is the dispatcher that determines the correct view for a room,
  33 // and calls the correct renderer.  Greater/Less than bounds are accepted.
  34 //
  35 function render_room_view(gt_msg, lt_msg)
  36 {
  37         switch(current_view) {
  38                 case views.VIEW_MAILBOX:                                                // FIXME view mail rooms as forums for now
  39                 case views.VIEW_BBS:
  40                         forum_readmessages("ctdl-main", gt_msg, lt_msg);
  41                         break;
  42                 default:
  43                         document.getElementById("ctdl-main").innerHTML =
  44                                 "The view for " + current_room + " is " + current_view + " but there is no renderer." ;
  45                         break;
  46         }
  47
  48 }
  49
  50
  51 // Forum view (flat) -- let's have another go at this with the rendering done client-side
  52 //
  53 function forum_readmessages(target_div, gt_msg, lt_msg)
  54 {
  55         original_text = document.getElementById(target_div).innerHTML;          // in case we need to replace it after an error
  56         document.getElementById(target_div).innerHTML =
  57                 "<div align=\"center\"><i class=\"fas fa-spinner fa-spin\"></i>&nbsp;&nbsp;"
  58                 + _("Loading messages from server, please wait") + "</div>";
  59
  60         var request = new XMLHttpRequest();
  61         if (lt_msg < 9999999999) {
  62                 request.open("GET", "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.lt|" + lt_msg, true);
  63         }
  64         else {
  65                 request.open("GET", "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.gt|" + gt_msg, true);
  66         }
  67         request.onreadystatechange = function() {
  68                 if (this.readyState === 4) {
  69                         if ((this.status / 100) == 2) {
  70                                 msgs = JSON.parse(this.responseText);
  71                                 document.getElementById(target_div).innerHTML = "" ;
  72
  73                                 // If we were given an explicit starting point, by all means start there.
  74                                 // Note that we don't have to remove them from the array because we did a 'msgs gt|xxx' command to Citadel.
  75                                 if (gt_msg > 0) {
  76                                         msgs = msgs.slice(0, messages_per_page);
  77                                 }
  78
  79                                 // Otherwise, show us the last 20 messages
  80                                 else {
  81                                         if (msgs.length > messages_per_page) {
  82                                                 msgs = msgs.slice(msgs.length - messages_per_page);
  83                                         }
  84                                         new_old_div_name = randomString(5);
  85                                         if (msgs.length < 1) {
  86                                                 newlt = lt_msg;
  87                                         }
  88                                         else {
  89                                                 newlt = msgs[0];
  90                                         }
  91                                         document.getElementById(target_div).innerHTML +=
  92                                                 "<div id=\"" + new_old_div_name + "\">" +
  93                                                 "<div align=\"center\">" +
  94                                                 "<a href=\"javascript:forum_readmessages('" + new_old_div_name + "', 0, " + newlt + ");\">" +
  95                                                 "<i class=\"fa fa-arrow-circle-up\"></i>&nbsp;&nbsp;" +
  96                                                 _("Older posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-up\"></a></div></div></a></div></div>" ;
  97                                 }
  98
  99                                 // Render an empty div for each message.  We will fill them in later.
 100                                 for (var i in msgs) {
 101                                         document.getElementById(target_div).innerHTML += "<div id=\"ctdl_msg_" + msgs[i] + "\"> </div>" ;
 102                                         document.getElementById("ctdl_msg_"+msgs[i]).style.display = "none";
 103                                 }
 104                                 if (lt_msg == 9999999999) {
 105                                         new_new_div_name = randomString(5);
 106                                         if (msgs.length <= 0) {
 107                                                 newgt = gt_msg;
 108                                         }
 109                                         else {
 110                                                 newgt = msgs[msgs.length-1];
 111                                         }
 112                                         document.getElementById(target_div).innerHTML +=
 113                                                 "<div id=\"" + new_new_div_name + "\">" +
 114                                                 "<div align=\"center\">" +
 115                                                 "<a href=\"javascript:forum_readmessages('" + new_new_div_name + "', " + newgt + ", 9999999999);\">" +
 116                                                 "<i class=\"fa fa-arrow-circle-down\"></i>&nbsp;&nbsp;" +
 117                                                 _("Newer posts") + "&nbsp;&nbsp;<i class=\"fa fa-arrow-circle-down\"></a></div></div>" ;
 118                                 }
 119
 120                                 // Now figure out where to scroll to after rendering.
 121                                 if (gt_msg > 0) {
 122                                         scroll_to = msgs[0];
 123                                 }
 124                                 else if (lt_msg < 9999999999) {
 125                                         scroll_to = msgs[msgs.length-1];
 126                                 }
 127                                 else if ( (logged_in) && (gt_msg == 0) && (lt_msg == 9999999999) ) {
 128                                         scroll_to = msgs[msgs.length-1];
 129                                 }
 130                                 else {
 131                                         scroll_to = msgs[0];            // FIXME this is too naive
 132                                 }
 133
 134                                 // Render the individual messages in the divs
 135                                 forum_render_messages(msgs, "ctdl_msg_", scroll_to)
 136                         }
 137                         else {
 138                                 // if xhr fails, this will make the link reappear so the user can try again
 139                                 document.getElementById(target_div).innerHTML = original_text;
 140                         }
 141                 }
 142         };
 143         request.send();
 144         request = null;
 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 {
 161         var request = new XMLHttpRequest();
 162         request.open("GET", "/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgs[i] + "/json", true);
 163         request.onreadystatechange = function() {
 164                 if (this.readyState === 4) {
 165                         if ((this.status / 100) == 2) {
 166                                 msg = JSON.parse(this.responseText);
 167
 168                                 document.getElementById(div).innerHTML =
 169                                   "<div class=\"ctdl-msg-wrapper\">"                            // begin message wrapper
 170                                 + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 171                                 + "<img src=\"/ctdl/u/" + msg.from + "/userpic\" width=\"32\" "
 172                                 + "onerror=\"this.parentNode.innerHTML='&lt;i class=&quot;fa fa-user-circle fa-2x&quot;&gt;&lt;/i&gt; '\">"
 173                                 + "</div>"                                                      // end avatar
 174                                 + "<div class=\"ctdl-msg-content\">"                            // begin content
 175                                 + "<div class=\"ctdl-msg-header\">"                             // begin header
 176                                 + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 177                                 + msg.from
 178                                 + "</a></span> "
 179                                 + "<span class=\"ctdl-msgdate\">"
 180                                 + msg.time
 181                                 + "</span> "
 182                                 + "</div>"                                                      // end header
 183                                 + "<div>"                                                       // begin body
 184                                 + msg.text
 185                                 + "</div>"                                                      // end body
 186                                 + "</div>"                                                      // end content
 187                                 + "</div>"                                                      // end wrapper
 188                                 ;
 189                         }
 190                         else {
 191                                 document.getElementById(div).innerHTML = "ERROR";
 192                         }
 193                         document.getElementById(div).style.display  = "inline";
 194                         if (msgnum == scroll_to) {
 195                                 window.location.hash = div;
 196                         }
 197                 }
 198         };
 199         request.send();
 200         request = null;
 201 }
 202