webcit-ng/static/js/views.js

   1 //
   2 // Copyright (c) 2016-2018 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         {
  39                 case views.VIEW_MAILBOX:                                                // FIXME view mail rooms as forums for now
  40                 case views.VIEW_BBS:
  41                         forum_readmessages("ctdl-main", gt_msg, lt_msg);
  42                         break;
  43                 default:
  44                         document.getElementById("ctdl-main").innerHTML =
  45                                 "The view for " + current_room + " is " + current_view + " but there is no renderer." ;
  46                         break;
  47         }
  48
  49 }
  50
  51
  52 // Forum view (flat) -- let's have another go at this with the rendering done client-side
  53 //
  54 function forum_readmessages(target_div, gt_msg, lt_msg)
  55 {
  56         original_text = document.getElementById(target_div).innerHTML;          // in case we need to replace it after an error
  57         document.getElementById(target_div).innerHTML =
  58                 "<i class=\"fas fa-spinner fa-spin\"></i>&nbsp;&nbsp;"
  59                 + _("Loading messages from server, please wait") ;
  60
  61         var request = new XMLHttpRequest();
  62         if (lt_msg < 9999999999)
  63         {
  64                 request.open("GET", "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.lt|" + lt_msg, true);
  65         }
  66         else
  67         {
  68                 request.open("GET", "/ctdl/r/" + escapeHTMLURI(current_room) + "/msgs.gt|" + gt_msg, true);
  69         }
  70         request.onreadystatechange = function()
  71         {
  72                 if (this.readyState === 4)
  73                 {
  74                         if ((this.status / 100) == 2)
  75                         {
  76                                 msgs = JSON.parse(this.responseText);
  77                                 document.getElementById(target_div).innerHTML = "" ;
  78
  79                                 // If we were given an explicit starting point, by all means start there.
  80                                 // Note that we don't have to remove them from the array because we did a 'msgs gt|xxx' command to Citadel.
  81                                 if (gt_msg > 0)
  82                                 {
  83                                         msgs = msgs.slice(0, messages_per_page);
  84                                 }
  85
  86                                 // Otherwise, show us the last 20 messages
  87                                 else
  88                                 {
  89                                         if (msgs.length > messages_per_page)
  90                                         {
  91                                                 msgs = msgs.slice(msgs.length - messages_per_page);
  92                                         }
  93                                         new_old_div_name = randomString(5);
  94                                         if (msgs.length < 1)
  95                                         {
  96                                                 newlt = lt_msg;
  97                                         }
  98                                         else
  99                                         {
 100                                                 newlt = msgs[0];
 101                                         }
 102                                         document.getElementById(target_div).innerHTML +=
 103                                                 "<div id=\"" + new_old_div_name + "\">" +
 104                                                 "<a href=\"javascript:forum_readmessages('" + new_old_div_name + "', 0, " + newlt + ");\">" +
 105                                                 "link to msgs less than " + newlt + "</a></div>" ;
 106                                 }
 107
 108                                 // Render the divs (we will fill them in later)
 109                                 for (var i in msgs)
 110                                 {
 111                                         document.getElementById(target_div).innerHTML +=
 112                                                 "<div id=\"ctdl_msg_"
 113                                                 + msgs[i] + "\">#" + msgs[i]
 114                                                 + "</div>" ;
 115                                 }
 116                                 if (lt_msg == 9999999999)
 117                                 {
 118                                         new_new_div_name = randomString(5);
 119                                         if (msgs.length <= 0)
 120                                         {
 121                                                 newgt = gt_msg;
 122                                         }
 123                                         else
 124                                         {
 125                                                 newgt = msgs[msgs.length-1];
 126                                         }
 127                                         document.getElementById(target_div).innerHTML +=
 128                                                 "<div id=\"" + new_new_div_name + "\">" +
 129                                                 "<a href=\"javascript:forum_readmessages('" + new_new_div_name + "', " + newgt + ", 9999999999);\">"
 130                                                 + "link to msgs greater than " + newgt + "</a></div>" ;
 131                                 }
 132
 133                                 // Now figure out where to scroll to after rendering.
 134                                 if (gt_msg > 0)
 135                                 {
 136                                         scroll_to = msgs[0];
 137                                 }
 138                                 else if (lt_msg < 9999999999)
 139                                 {
 140                                         scroll_to = msgs[msgs.length-1];
 141                                 }
 142                                 else if ( (logged_in) && (gt_msg == 0) && (lt_msg == 9999999999) )
 143                                 {
 144                                         scroll_to = msgs[msgs.length-1];
 145                                 }
 146                                 else
 147                                 {
 148                                         scroll_to = msgs[0];            // FIXME this is too naive
 149                                 }
 150
 151                                 // Render the individual messages in the divs
 152                                 forum_render_messages(msgs, "ctdl_msg_", scroll_to)
 153                         }
 154                         else
 155                         {
 156                                 // if xhr fails, this will make the link reappear so the user can try again
 157                                 document.getElementById(target_div).innerHTML = original_text;
 158                         }
 159                 }
 160         };
 161         request.send();
 162         request = null;
 163 }
 164
 165
 166 // Render a range of messages, with the div prefix specified
 167 //
 168 function forum_render_messages(msgs, prefix, scroll_to)
 169 {
 170         for (i=0; i<msgs.length; ++i)
 171         {
 172                 forum_render_one(prefix+msgs[i], msgs[i], scroll_to)
 173         }
 174 }
 175
 176
 177 // 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.
 178 function forum_render_one(div, msgnum, scroll_to)
 179 {
 180         var request = new XMLHttpRequest();
 181         request.open("GET", "/ctdl/r/" + escapeHTMLURI(current_room) + "/" + msgs[i] + "/json", true);
 182         request.onreadystatechange = function()
 183         {
 184                 if (this.readyState === 4)
 185                 {
 186                         if ((this.status / 100) == 2)
 187                         {
 188                                 msg = JSON.parse(this.responseText);
 189
 190                                 document.getElementById(div).innerHTML =
 191                                   "<div class=\"ctdl-msg-wrapper\">"                            // begin message wrapper
 192                                 + "<div class=\"ctdl-avatar\">"                                 // begin avatar
 193
 194                                 + "<img src=\"/ctdl/u/" + msg.from + "/userpic\" width=\"32\" onerror=\"this.parentNode.innerHTML='FIXME'\">"
 195
 196                                 //+ "<i class=\"fa fa-user-circle fa-2x\"></i> "                        // FIXME temporary avatar
 197                                 + "</div>"                                                      // end avatar
 198                                 + "<div class=\"ctdl-msg-content\">"                            // begin content
 199                                 + "<div class=\"ctdl-msg-header\">"                             // begin header
 200                                 + "<span class=\"ctdl-username\"><a href=\"#\">"                // FIXME link to user profile
 201                                 + msg.from
 202                                 + "</a></span> "
 203                                 + "<span class=\"ctdl-msgdate\">"
 204                                 + msg.time
 205                                 + "</span> "
 206                                 + "</div>"                                                      // end header
 207                                 + "<div>"                                                       // begin body
 208                                 + msg.text
 209                                 + "</div>"                                                      // end body
 210                                 + "</div>"                                                      // end content
 211                                 + "</div>"                                                      // end wrapper
 212                                 ;
 213                         }
 214                         else
 215                         {
 216                                 document.getElementById(div).innerHTML = "ERROR";
 217                         }
 218                         if (msgnum == scroll_to)
 219                         {
 220                                 window.location.hash = div;
 221                         }
 222                 }
 223         };
 224         request.send();
 225         request = null;
 226 }
 227