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                 }
 101
 102                 var searchbox = document.getElementById("searchbox");
 103
 104                 searchbox.value = search_query;
 105
 106                 notify("");
 107
 108         }
 109 }
 110
 111 function view_callback() {
 112         var container = document.getElementById('content');
 113         if (xmlhttp_view.readyState == 4) {
 114                 container.innerHTML=xmlhttp_view.responseText;
 115         }
 116 }
 117
 118 function refetch_callback() {
 119
 120         if (xmlhttp_rpc.readyState == 4) {
 121                 notify("All feeds updated");
 122                 var container = document.getElementById('feeds');
 123                 container.innerHTML = xmlhttp_rpc.responseText;
 124                 document.title = "Tiny Tiny RSS";
 125         }
 126 }
 127
 128 function scheduleFeedUpdate(force) {
 129
 130         notify("Updating feeds in background...");
 131
 132         document.title = "Tiny Tiny RSS - Updating...";
 133
 134         var query_str = "backend.php?op=rpc&subop=";
 135
 136         if (force) {
 137                 query_str = query_str + "forceUpdateAllFeeds";
 138         } else {
 139                 query_str = query_str + "updateAllFeeds";
 140         }
 141
 142         if (xmlhttp_ready(xmlhttp_rpc)) {
 143                 xmlhttp_rpc.open("GET", query_str, true);
 144                 xmlhttp_rpc.onreadystatechange=refetch_callback;
 145                 xmlhttp_rpc.send(null);
 146         } else {
 147                 printLockingError();
 148         }
 149 }
 150
 151 function updateFeedList(silent, fetch) {
 152
 153         if (silent != true) {
 154                 notify("Loading feed list...");
 155         }
 156
 157         var query_str = "backend.php?op=feeds";
 158
 159         if (fetch) query_str = query_str + "&fetch=yes";
 160
 161         if (xmlhttp_ready(xmlhttp)) {
 162                 xmlhttp.open("GET", query_str, true);
 163                 xmlhttp.onreadystatechange=feedlist_callback;
 164                 xmlhttp.send(null);
 165         } else {
 166                 printLockingError();
 167         }
 168 }
 169
 170 function catchupPage(feed) {
 171
 172         if (!xmlhttp_ready(xmlhttp)) {
 173                 printLockingError();
 174                 return
 175         }
 176
 177         var content = document.getElementById("headlinesList");
 178
 179         var rows = new Array();
 180
 181         for (i = 0; i < content.rows.length; i++) {
 182                 var row_id = content.rows[i].id.replace("RROW-", "");
 183                 if (row_id.length > 0) {
 184                         if (content.rows[i].className.match("Unread")) {
 185                                 rows.push(row_id);
 186                                 content.rows[i].className = content.rows[i].className.replace("Unread", "");
 187                         }
 188                 }
 189         }
 190
 191         if (rows.length > 0) {
 192
 193                 var feedr = document.getElementById("FEEDR-" + feed);
 194                 var feedu = document.getElementById("FEEDU-" + feed);
 195
 196                 feedu.innerHTML = feedu.innerHTML - rows.length;
 197
 198                 if (feedu.innerHTML > 0 && !feedr.className.match("Unread")) {
 199                                 feedr.className = feedr.className + "Unread";
 200                 } else if (feedu.innerHTML <= 0) {
 201                                 feedr.className = feedr.className.replace("Unread", "");
 202                 }
 203
 204                 var query_str = "backend.php?op=rpc&subop=catchupPage&ids=" +
 205                         param_escape(rows.toString());
 206
 207                 notify("Marking this page as read...");
 208
 209                 xmlhttp.open("GET", query_str, true);
 210                 xmlhttp.onreadystatechange=notify_callback;
 211                 xmlhttp.send(null);
 212
 213         } else {
 214                 notify("No unread items on this page.");
 215
 216         }
 217 }
 218
 219 function catchupAllFeeds() {
 220
 221         if (!xmlhttp_ready(xmlhttp)) {
 222                 printLockingError();
 223                 return
 224         }
 225         var query_str = "backend.php?op=feeds&subop=catchupAll";
 226
 227         notify("Marking all feeds as read...");
 228
 229         xmlhttp.open("GET", query_str, true);
 230         xmlhttp.onreadystatechange=feedlist_callback;
 231         xmlhttp.send(null);
 232
 233 }
 234
 235 function viewfeed(feed, skip, subop) {
 236
 237         enableHotkeys();
 238
 239         var searchbox = document.getElementById("searchbox");
 240
 241         if (searchbox) {
 242                 search_query = searchbox.value;
 243         } else {
 244                 search_query = "";
 245         }
 246
 247 /*      if (active_feed_id == feed && subop != "ForceUpdate") {
 248                 notify("This feed is currently selected.");
 249                 return;
 250         } */
 251
 252         if (skip < 0 || skip > total_feed_entries) {
 253                 return;
 254         }
 255
 256         if (!xmlhttp_ready(xmlhttp)) {
 257                 printLockingError();
 258                 return
 259         }
 260
 261         active_feed_id = feed;
 262         active_post_id = false;
 263         active_offset = skip;
 264
 265         var query = "backend.php?op=viewfeed&feed=" + param_escape(feed) +
 266                 "&skip=" + param_escape(skip) + "&subop=" + param_escape(subop);
 267
 268         if (search_query != "") {
 269                 query = query + "&search=" + param_escape(search_query);
 270         }
 271
 272         xmlhttp.open("GET", query, true);
 273         xmlhttp.onreadystatechange=viewfeed_callback;
 274         xmlhttp.send(null);
 275
 276         notify("Loading headlines...");
 277
 278 }
 279
 280 function cleanSelectedHeadlines() {
 281         var content = document.getElementById("headlinesList");
 282
 283         var rows = new Array();
 284
 285         for (i = 0; i < content.rows.length; i++) {
 286                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 287         }
 288
 289 }
 290
 291 function view(id,feed_id) {
 292
 293         enableHotkeys();
 294
 295         if (!xmlhttp_ready(xmlhttp_view)) {
 296                 printLockingError();
 297                 return
 298         }
 299
 300         var crow = document.getElementById("RROW-" + id);
 301
 302         if (crow.className.match("Unread")) {
 303                 var umark = document.getElementById("FEEDU-" + feed_id);
 304                 umark.innerHTML = umark.innerHTML - 1;
 305                 crow.className = crow.className.replace("Unread", "");
 306
 307                 if (umark.innerHTML == "0") {
 308                         var feedr = document.getElementById("FEEDR-" + feed_id);
 309                         feedr.className = feedr.className.replace("Unread", "");
 310                 }
 311
 312                 total_unread--;
 313         }
 314
 315         cleanSelectedHeadlines();
 316
 317         crow.className = crow.className + "Selected";
 318
 319         var upd_img_pic = document.getElementById("FUPDPIC-" + id);
 320
 321         if (upd_img_pic) {
 322                 upd_img_pic.innerHTML = "";
 323         }
 324
 325         document.getElementById('content').innerHTML='Loading, please wait...';
 326
 327         active_post_id = id;
 328
 329         xmlhttp_view.open("GET", "backend.php?op=view&id=" + param_escape(id), true);
 330         xmlhttp_view.onreadystatechange=view_callback;
 331         xmlhttp_view.send(null);
 332
 333
 334 }
 335
 336 function timeout() {
 337         scheduleFeedUpdate(true);
 338         setTimeout("timeout()", 1800*1000);
 339 }
 340
 341 function resetSearch() {
 342         document.getElementById("searchbox").value = "";
 343         viewfeed(active_feed_id, 0, "");
 344 }
 345
 346 function search(feed) {
 347         viewfeed(feed, 0, "");
 348 }
 349
 350 function localPiggieFunction(enable) {
 351         if (enable) {
 352                 var query_str = "backend.php?op=feeds&subop=piggie";
 353
 354                 if (xmlhttp_ready(xmlhttp)) {
 355
 356                         xmlhttp.open("GET", query_str, true);
 357                         xmlhttp.onreadystatechange=feedlist_callback;
 358                         xmlhttp.send(null);
 359                 }
 360         }
 361 }
 362
 363 function relativeid_callback() {
 364
 365         if (xmlhttp_rpc.readyState == 4) {
 366                 notify(xmlhttp_rpc.responseText);
 367         }
 368
 369 }
 370
 371 function getVisibleHeadlineIds() {
 372
 373         var content = document.getElementById("headlinesList");
 374
 375         var rows = new Array();
 376
 377         for (i = 0; i < content.rows.length; i++) {
 378                 var row_id = content.rows[i].id.replace("RROW-", "");
 379                 if (row_id.length > 0) {
 380                                 rows.push(row_id);
 381                 }
 382         }
 383         return rows;
 384 }
 385
 386 function getFirstVisibleHeadlineId() {
 387         var rows = getVisibleHeadlineIds();
 388         return rows[0];
 389 }
 390
 391 function getLastVisibleHeadlineId() {
 392         var rows = getVisibleHeadlineIds();
 393         return rows[rows.length-1];
 394 }
 395
 396 function moveToPost(mode) {
 397
 398         var rows = getVisibleHeadlineIds();
 399
 400         var prev_id;
 401         var next_id;
 402
 403         if (active_post_id == false) {
 404                 next_id = getFirstVisibleHeadlineId();
 405                 prev_id = getLastVisibleHeadlineId();
 406         } else {
 407                 for (var i = 0; i < rows.length; i++) {
 408                         if (rows[i] == active_post_id) {
 409                                 prev_id = rows[i-1];
 410                                 next_id = rows[i+1];
 411                         }
 412                 }
 413         }
 414
 415         var content = document.getElementById("headlinesList");
 416
 417         if (mode == "next") {
 418                 if (next_id != undefined) {
 419                         view(next_id, active_feed_id);
 420                 } else {
 421                         _viewfeed_autoselect_first = true;
 422                         viewfeed(active_feed_id, active_offset+15);
 423                 }
 424         }
 425
 426         if (mode == "prev") {
 427                 if ( prev_id != undefined) {
 428                         view(prev_id, active_feed_id);
 429                 } else {
 430                         _viewfeed_autoselect_last = true;
 431                         viewfeed(active_feed_id, active_offset-15);
 432                 }
 433         }
 434
 435 }
 436
 437 function localHotkeyHandler(keycode) {
 438
 439         if (keycode == 78) {
 440                 return moveToPost('next');
 441         }
 442
 443         if (keycode == 80) {
 444                 return moveToPost('prev');
 445         }
 446
 447         if (keycode == 82) {
 448                 return scheduleFeedUpdate(true);
 449         }
 450
 451         if (keycode == 85) {
 452                 return viewfeed(active_feed_id, active_offset, "ForceUpdate");
 453         }
 454
 455 //      notify("KC: " + keycode);
 456
 457 }
 458
 459
 460 function init() {
 461
 462         // IE kludge
 463
 464         if (xmlhttp && !xmlhttp_rpc) {
 465                 xmlhttp_rpc = xmlhttp;
 466                 xmlhttp_view = xmlhttp;
 467         }
 468
 469         if (!xmlhttp || !xmlhttp_rpc || !xmlhttp_view) {
 470                 document.getElementById("headlines").innerHTML =
 471                         "<b>Fatal error:</b> This program needs XmlHttpRequest " +
 472                         "to function properly. Your browser doesn't seem to support it.";
 473                 return;
 474         }
 475
 476         updateFeedList(false, false);
 477         document.onkeydown = hotkey_handler;
 478         setTimeout("timeout()", 1800*1000);
 479 }