tt-rss.js

   1 /*
   2         This program is Copyright (c) 2003-2005 Andrew Dolgov <cthulhoo@gmail.com>
   3         Licensed under GPL v.2 or (at your preference) any later version.
   4 */
   5
   6 var xmlhttp = false;
   7 var xmlhttp_rpc = false;
   8 var xmlhttp_view = false;
   9
  10 var total_unread = 0;
  11 var first_run = true;
  12
  13 var active_post_id = false;
  14 var active_feed_id = false;
  15 var active_offset = false;
  16
  17 var total_feed_entries = false;
  18
  19 var _viewfeed_autoselect_first = false;
  20 var _viewfeed_autoselect_last = false;
  21
  22 var search_query = "";
  23
  24 /*@cc_on @*/
  25 /*@if (@_jscript_version >= 5)
  26 // JScript gives us Conditional compilation, we can cope with old IE versions.
  27 // and security blocked creation of the objects.
  28 try {
  29         xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
  30 } catch (e) {
  31         try {
  32                 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
  33                 xmlhttp_rpc = new ActiveXObject("Microsoft.XMLHTTP");
  34                 xmlhttp_view = new ActiveXObject("Microsoft.XMLHTTP");
  35         } catch (E) {
  36                 xmlhttp = false;
  37                 xmlhttp_rpc = false;
  38                 xmlhttp_view = false;
  39         }
  40 }
  41 @end @*/
  42
  43 if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
  44         xmlhttp = new XMLHttpRequest();
  45         xmlhttp_rpc = new XMLHttpRequest();
  46         xmlhttp_view = new XMLHttpRequest();
  47 }
  48
  49 function feedlist_callback() {
  50         var container = document.getElementById('feeds');
  51         if (xmlhttp.readyState == 4) {
  52                 container.innerHTML=xmlhttp.responseText;
  53
  54                 if (first_run) {
  55                         scheduleFeedUpdate(false);
  56                         first_run = false;
  57                 } else {
  58                         notify("");
  59                 }
  60         }
  61 }
  62
  63 function viewfeed_callback() {
  64         var container = document.getElementById('headlines');
  65         if (xmlhttp.readyState == 4) {
  66                 container.innerHTML = xmlhttp.responseText;
  67
  68                 var factive = document.getElementById("FACTIVE");
  69                 var funread = document.getElementById("FUNREAD");
  70                 var ftotal = document.getElementById("FTOTAL");
  71
  72                 if (_viewfeed_autoselect_first == true) {
  73                         _viewfeed_autoselect_first = false;
  74                         view(getFirstVisibleHeadlineId(), active_feed_id);
  75                 }
  76
  77                 if (_viewfeed_autoselect_last == true) {
  78                         _viewfeed_autoselect_last = false;
  79                         view(getLastVisibleHeadlineId(), active_feed_id);
  80                 }
  81
  82                 if (ftotal && factive && funread) {
  83                         var feed_id = factive.innerHTML;
  84
  85                         var feedr = document.getElementById("FEEDR-" + feed_id);
  86                         var feedt = document.getElementById("FEEDT-" + feed_id);
  87                         var feedu = document.getElementById("FEEDU-" + feed_id);
  88
  89                         feedt.innerHTML = ftotal.innerHTML;
  90                         feedu.innerHTML = funread.innerHTML;
  91
  92                         total_feed_entries = ftotal.innerHTML;
  93
  94                         if (feedu.innerHTML > 0 && !feedr.className.match("Unread")) {
  95                                         feedr.className = feedr.className + "Unread";
  96                         } else if (feedu.innerHTML <= 0) {
  97                                         feedr.className = feedr.className.replace("Unread", "");
  98                         }
  99
 100                         cleanSelected("feedsList");
 101
 102                         feedr.className = feedr.className + "Selected";
 103                 }
 104
 105                 var searchbox = document.getElementById("searchbox");
 106                 searchbox.value = search_query;
 107
 108                 markHeadline(active_post_id);
 109
 110                 notify("");
 111
 112         }
 113 }
 114
 115 function view_callback() {
 116         var container = document.getElementById('content');
 117         if (xmlhttp_view.readyState == 4) {
 118                 container.innerHTML=xmlhttp_view.responseText;
 119                 markHeadline(active_post_id);
 120         }
 121 }
 122
 123 function refetch_callback() {
 124
 125         if (xmlhttp_rpc.readyState == 4) {
 126                 notify("All feeds updated");
 127                 var container = document.getElementById('feeds');
 128                 container.innerHTML = xmlhttp_rpc.responseText;
 129                 document.title = "Tiny Tiny RSS";
 130         }
 131 }
 132
 133 function scheduleFeedUpdate(force) {
 134
 135         notify("Updating feeds in background...");
 136
 137         document.title = "Tiny Tiny RSS - Updating...";
 138
 139         var query_str = "backend.php?op=rpc&subop=";
 140
 141         if (force) {
 142                 query_str = query_str + "forceUpdateAllFeeds";
 143         } else {
 144                 query_str = query_str + "updateAllFeeds";
 145         }
 146
 147         if (xmlhttp_ready(xmlhttp_rpc)) {
 148                 xmlhttp_rpc.open("GET", query_str, true);
 149                 xmlhttp_rpc.onreadystatechange=refetch_callback;
 150                 xmlhttp_rpc.send(null);
 151         } else {
 152                 printLockingError();
 153         }
 154 }
 155
 156 function updateFeedList(silent, fetch) {
 157
 158         if (silent != true) {
 159                 notify("Loading feed list...");
 160         }
 161
 162         var query_str = "backend.php?op=feeds";
 163
 164         if (fetch) query_str = query_str + "&fetch=yes";
 165
 166         if (xmlhttp_ready(xmlhttp)) {
 167                 xmlhttp.open("GET", query_str, true);
 168                 xmlhttp.onreadystatechange=feedlist_callback;
 169                 xmlhttp.send(null);
 170         } else {
 171                 printLockingError();
 172         }
 173 }
 174
 175 function catchupPage(feed) {
 176
 177         if (!xmlhttp_ready(xmlhttp)) {
 178                 printLockingError();
 179                 return
 180         }
 181
 182         var content = document.getElementById("headlinesList");
 183
 184         var rows = new Array();
 185
 186         for (i = 0; i < content.rows.length; i++) {
 187                 var row_id = content.rows[i].id.replace("RROW-", "");
 188                 if (row_id.length > 0) {
 189                         if (content.rows[i].className.match("Unread")) {
 190                                 rows.push(row_id);
 191                                 content.rows[i].className = content.rows[i].className.replace("Unread", "");
 192                         }
 193                 }
 194         }
 195
 196         if (rows.length > 0) {
 197
 198                 var feedr = document.getElementById("FEEDR-" + feed);
 199                 var feedu = document.getElementById("FEEDU-" + feed);
 200
 201                 feedu.innerHTML = feedu.innerHTML - rows.length;
 202
 203                 if (feedu.innerHTML > 0 && !feedr.className.match("Unread")) {
 204                                 feedr.className = feedr.className + "Unread";
 205                 } else if (feedu.innerHTML <= 0) {
 206                                 feedr.className = feedr.className.replace("Unread", "");
 207                 }
 208
 209                 var query_str = "backend.php?op=rpc&subop=catchupPage&ids=" +
 210                         param_escape(rows.toString());
 211
 212                 notify("Marking this page as read...");
 213
 214                 var button = document.getElementById("btnCatchupPage");
 215
 216                 button.className = "disabledButton";
 217                 button.href = "";
 218
 219                 xmlhttp.open("GET", query_str, true);
 220                 xmlhttp.onreadystatechange=notify_callback;
 221                 xmlhttp.send(null);
 222
 223         } else {
 224                 notify("No unread items on this page.");
 225
 226         }
 227 }
 228
 229 function catchupAllFeeds() {
 230
 231         if (!xmlhttp_ready(xmlhttp)) {
 232                 printLockingError();
 233                 return
 234         }
 235         var query_str = "backend.php?op=feeds&subop=catchupAll";
 236
 237         notify("Marking all feeds as read...");
 238
 239         xmlhttp.open("GET", query_str, true);
 240         xmlhttp.onreadystatechange=feedlist_callback;
 241         xmlhttp.send(null);
 242
 243 }
 244
 245 function viewfeed(feed, skip, subop) {
 246
 247         enableHotkeys();
 248
 249         var searchbox = document.getElementById("searchbox");
 250
 251         if (searchbox) {
 252                 search_query = searchbox.value;
 253         } else {
 254                 search_query = "";
 255         }
 256
 257 /*      if (active_feed_id == feed && subop != "ForceUpdate") {
 258                 notify("This feed is currently selected.");
 259                 return;
 260         } */
 261
 262         if (skip < 0 || skip > total_feed_entries) {
 263                 return;
 264         }
 265
 266         if (!xmlhttp_ready(xmlhttp)) {
 267                 printLockingError();
 268                 return
 269         }
 270
 271         if (active_feed_id != feed || skip != active_offset) {
 272                 active_post_id = false;
 273         }
 274
 275         active_feed_id = feed;
 276         active_offset = skip;
 277
 278         var query = "backend.php?op=viewfeed&feed=" + param_escape(feed) +
 279                 "&skip=" + param_escape(skip) + "&subop=" + param_escape(subop);
 280
 281         if (search_query != "") {
 282                 query = query + "&search=" + param_escape(search_query);
 283         }
 284
 285         xmlhttp.open("GET", query, true);
 286         xmlhttp.onreadystatechange=viewfeed_callback;
 287         xmlhttp.send(null);
 288
 289         notify("Loading headlines...");
 290
 291 }
 292
 293 function markHeadline(id) {
 294         var row = document.getElementById("RROW-" + id);
 295         if (row) {
 296                 row.className = row.className + "Selected";
 297         }
 298 }
 299
 300 function cleanSelected(element) {
 301         var content = document.getElementById(element);
 302
 303         var rows = new Array();
 304
 305         for (i = 0; i < content.rows.length; i++) {
 306                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 307         }
 308
 309 }
 310
 311 function view(id,feed_id) {
 312
 313         enableHotkeys();
 314
 315         if (!xmlhttp_ready(xmlhttp_view)) {
 316                 printLockingError();
 317                 return
 318         }
 319
 320         var crow = document.getElementById("RROW-" + id);
 321
 322         if (crow.className.match("Unread")) {
 323                 var umark = document.getElementById("FEEDU-" + feed_id);
 324                 umark.innerHTML = umark.innerHTML - 1;
 325                 crow.className = crow.className.replace("Unread", "");
 326
 327                 if (umark.innerHTML == "0") {
 328                         var feedr = document.getElementById("FEEDR-" + feed_id);
 329                         feedr.className = feedr.className.replace("Unread", "");
 330                 }
 331
 332                 total_unread--;
 333         }
 334
 335         cleanSelected("headlinesList");
 336 //      crow.className = crow.className + "Selected";
 337
 338         var upd_img_pic = document.getElementById("FUPDPIC-" + id);
 339
 340         if (upd_img_pic) {
 341                 upd_img_pic.innerHTML = "";
 342         }
 343
 344 //      document.getElementById('content').innerHTML='Loading, please wait...';
 345
 346         active_post_id = id;
 347
 348         xmlhttp_view.open("GET", "backend.php?op=view&id=" + param_escape(id), true);
 349         xmlhttp_view.onreadystatechange=view_callback;
 350         xmlhttp_view.send(null);
 351
 352
 353 }
 354
 355 function timeout() {
 356         scheduleFeedUpdate(true);
 357         setTimeout("timeout()", 1800*1000);
 358 }
 359
 360 function resetSearch() {
 361         document.getElementById("searchbox").value = "";
 362         viewfeed(active_feed_id, 0, "");
 363 }
 364
 365 function search(feed) {
 366         viewfeed(feed, 0, "");
 367 }
 368
 369 function localPiggieFunction(enable) {
 370         if (enable) {
 371                 var query_str = "backend.php?op=feeds&subop=piggie";
 372
 373                 if (xmlhttp_ready(xmlhttp)) {
 374
 375                         xmlhttp.open("GET", query_str, true);
 376                         xmlhttp.onreadystatechange=feedlist_callback;
 377                         xmlhttp.send(null);
 378                 }
 379         }
 380 }
 381
 382 function relativeid_callback() {
 383
 384         if (xmlhttp_rpc.readyState == 4) {
 385                 notify(xmlhttp_rpc.responseText);
 386         }
 387
 388 }
 389
 390 function getVisibleHeadlineIds() {
 391
 392         var content = document.getElementById("headlinesList");
 393
 394         var rows = new Array();
 395
 396         for (i = 0; i < content.rows.length; i++) {
 397                 var row_id = content.rows[i].id.replace("RROW-", "");
 398                 if (row_id.length > 0) {
 399                                 rows.push(row_id);
 400                 }
 401         }
 402         return rows;
 403 }
 404
 405 function getFirstVisibleHeadlineId() {
 406         var rows = getVisibleHeadlineIds();
 407         return rows[0];
 408 }
 409
 410 function getLastVisibleHeadlineId() {
 411         var rows = getVisibleHeadlineIds();
 412         return rows[rows.length-1];
 413 }
 414
 415 function moveToPost(mode) {
 416
 417         var rows = getVisibleHeadlineIds();
 418
 419         var prev_id;
 420         var next_id;
 421
 422         if (active_post_id == false) {
 423                 next_id = getFirstVisibleHeadlineId();
 424                 prev_id = getLastVisibleHeadlineId();
 425         } else {
 426                 for (var i = 0; i < rows.length; i++) {
 427                         if (rows[i] == active_post_id) {
 428                                 prev_id = rows[i-1];
 429                                 next_id = rows[i+1];
 430                         }
 431                 }
 432         }
 433
 434         if (mode == "next") {
 435                 if (next_id != undefined) {
 436                         view(next_id, active_feed_id);
 437                 } else {
 438                         _viewfeed_autoselect_first = true;
 439                         viewfeed(active_feed_id, active_offset+15);
 440                 }
 441         }
 442
 443         if (mode == "prev") {
 444                 if ( prev_id != undefined) {
 445                         view(prev_id, active_feed_id);
 446                 } else {
 447                         _viewfeed_autoselect_last = true;
 448                         viewfeed(active_feed_id, active_offset-15);
 449                 }
 450         }
 451
 452 }
 453
 454 function localHotkeyHandler(keycode) {
 455
 456         if (keycode == 78) {
 457                 return moveToPost('next');
 458         }
 459
 460         if (keycode == 80) {
 461                 return moveToPost('prev');
 462         }
 463
 464         if (keycode == 82) {
 465                 return scheduleFeedUpdate(true);
 466         }
 467
 468         if (keycode == 85) {
 469                 return viewfeed(active_feed_id, active_offset, "ForceUpdate");
 470         }
 471
 472 //      notify("KC: " + keycode);
 473
 474 }
 475
 476
 477 function init() {
 478
 479         // IE kludge
 480
 481         if (xmlhttp && !xmlhttp_rpc) {
 482                 xmlhttp_rpc = xmlhttp;
 483                 xmlhttp_view = xmlhttp;
 484         }
 485
 486         if (!xmlhttp || !xmlhttp_rpc || !xmlhttp_view) {
 487                 document.getElementById("headlines").innerHTML =
 488                         "<b>Fatal error:</b> This program needs XmlHttpRequest " +
 489                         "to function properly. Your browser doesn't seem to support it.";
 490                 return;
 491         }
 492
 493         updateFeedList(false, false);
 494         document.onkeydown = hotkey_handler;
 495         setTimeout("timeout()", 1800*1000);
 496 }