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 _update_ids;
  23 var _update_num_ids;
  24
  25 var search_query = "";
  26
  27 /*@cc_on @*/
  28 /*@if (@_jscript_version >= 5)
  29 // JScript gives us Conditional compilation, we can cope with old IE versions.
  30 // and security blocked creation of the objects.
  31 try {
  32         xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
  33 } catch (e) {
  34         try {
  35                 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
  36                 xmlhttp_rpc = new ActiveXObject("Microsoft.XMLHTTP");
  37                 xmlhttp_view = new ActiveXObject("Microsoft.XMLHTTP");
  38         } catch (E) {
  39                 xmlhttp = false;
  40                 xmlhttp_rpc = false;
  41                 xmlhttp_view = false;
  42         }
  43 }
  44 @end @*/
  45
  46 if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
  47         xmlhttp = new XMLHttpRequest();
  48         xmlhttp_rpc = new XMLHttpRequest();
  49         xmlhttp_view = new XMLHttpRequest();
  50 }
  51
  52 function feedlist_callback() {
  53         var container = document.getElementById('feeds');
  54         if (xmlhttp.readyState == 4) {
  55                 container.innerHTML=xmlhttp.responseText;
  56
  57                 if (first_run) {
  58                         scheduleFeedUpdate(false);
  59                         first_run = false;
  60                 } else {
  61                         notify("");
  62                 }
  63         }
  64 }
  65
  66 function feed_update_callback() {
  67         if (xmlhttp_rpc.readyState == 4) {
  68                 var result = xmlhttp_rpc.responseText;
  69                 notify(_update_ids);
  70                 updateFeed(_update_ids.shift());
  71         }
  72 }
  73
  74 function viewfeed_callback() {
  75         var container = document.getElementById('headlines');
  76         if (xmlhttp.readyState == 4) {
  77                 container.innerHTML = xmlhttp.responseText;
  78
  79                 var factive = document.getElementById("FACTIVE");
  80                 var funread = document.getElementById("FUNREAD");
  81                 var ftotal = document.getElementById("FTOTAL");
  82
  83                 if (_viewfeed_autoselect_first == true) {
  84                         _viewfeed_autoselect_first = false;
  85                         view(getFirstVisibleHeadlineId(), active_feed_id);
  86                 }
  87
  88                 if (_viewfeed_autoselect_last == true) {
  89                         _viewfeed_autoselect_last = false;
  90                         view(getLastVisibleHeadlineId(), active_feed_id);
  91                 }
  92
  93                 if (ftotal && factive && funread) {
  94                         var feed_id = factive.innerHTML;
  95
  96                         var feedr = document.getElementById("FEEDR-" + feed_id);
  97                         var feedt = document.getElementById("FEEDT-" + feed_id);
  98                         var feedu = document.getElementById("FEEDU-" + feed_id);
  99
 100                         feedt.innerHTML = ftotal.innerHTML;
 101                         feedu.innerHTML = funread.innerHTML;
 102
 103                         total_feed_entries = ftotal.innerHTML;
 104
 105                         if (feedu.innerHTML > 0 && !feedr.className.match("Unread")) {
 106                                         feedr.className = feedr.className + "Unread";
 107                         } else if (feedu.innerHTML <= 0) {
 108                                         feedr.className = feedr.className.replace("Unread", "");
 109                         }
 110
 111                         cleanSelected("feedsList");
 112
 113                         feedr.className = feedr.className + "Selected";
 114                 }
 115
 116                 var searchbox = document.getElementById("searchbox");
 117                 searchbox.value = search_query;
 118
 119                 markHeadline(active_post_id);
 120
 121                 notify("");
 122
 123         }
 124 }
 125
 126 function view_callback() {
 127         var container = document.getElementById('content');
 128         if (xmlhttp_view.readyState == 4) {
 129                 container.innerHTML=xmlhttp_view.responseText;
 130                 markHeadline(active_post_id);
 131         }
 132 }
 133
 134 function refetch_callback() {
 135
 136         if (xmlhttp_rpc.readyState == 4) {
 137                 notify("All feeds updated");
 138                 var container = document.getElementById('feeds');
 139                 container.innerHTML = xmlhttp_rpc.responseText;
 140                 document.title = "Tiny Tiny RSS";
 141         }
 142 }
 143
 144 function updateFeed(feed_id) {
 145
 146         var query_str = "backend.php?op=rpc&subop=updateFeed&feed=" + feed_id;
 147
 148         if (xmlhttp_ready(xmlhttp_rpc)) {
 149                 xmlhttp_rpc.open("GET", query_str, true);
 150                 xmlhttp_rpc.onreadystatechange=feed_update_callback;
 151                 xmlhttp_rpc.send(null);
 152         } else {
 153                 printLockingError();
 154         }
 155
 156 }
 157
 158 function scheduleSepFeedUpdate(force) {
 159         notify("Updating feeds in background (M2)...");
 160
 161         _update_ids = getFeedIds();
 162         _update_num_ids = _update_ids.length;
 163
 164         updateFeed(_update_ids.pop());
 165
 166 }
 167
 168 function scheduleFeedUpdate(force) {
 169
 170         notify("Updating feeds in background...");
 171
 172         document.title = "Tiny Tiny RSS - Updating...";
 173
 174         var query_str = "backend.php?op=rpc&subop=";
 175
 176         if (force) {
 177                 query_str = query_str + "forceUpdateAllFeeds";
 178         } else {
 179                 query_str = query_str + "updateAllFeeds";
 180         }
 181
 182         if (xmlhttp_ready(xmlhttp_rpc)) {
 183                 xmlhttp_rpc.open("GET", query_str, true);
 184                 xmlhttp_rpc.onreadystatechange=refetch_callback;
 185                 xmlhttp_rpc.send(null);
 186         } else {
 187                 printLockingError();
 188         }
 189 }
 190
 191 function updateFeedList(silent, fetch) {
 192
 193         if (silent != true) {
 194                 notify("Loading feed list...");
 195         }
 196
 197         var query_str = "backend.php?op=feeds";
 198
 199         if (fetch) query_str = query_str + "&fetch=yes";
 200
 201         if (xmlhttp_ready(xmlhttp)) {
 202                 xmlhttp.open("GET", query_str, true);
 203                 xmlhttp.onreadystatechange=feedlist_callback;
 204                 xmlhttp.send(null);
 205         } else {
 206                 printLockingError();
 207         }
 208 }
 209
 210 function catchupPage(feed) {
 211
 212         if (!xmlhttp_ready(xmlhttp)) {
 213                 printLockingError();
 214                 return
 215         }
 216
 217         var content = document.getElementById("headlinesList");
 218
 219         var rows = new Array();
 220
 221         for (i = 0; i < content.rows.length; i++) {
 222                 var row_id = content.rows[i].id.replace("RROW-", "");
 223                 if (row_id.length > 0) {
 224                         if (content.rows[i].className.match("Unread")) {
 225                                 rows.push(row_id);
 226                                 content.rows[i].className = content.rows[i].className.replace("Unread", "");
 227                         }
 228
 229                         var upd_img_pic = document.getElementById("FUPDPIC-" + row_id);
 230                         if (upd_img_pic) {
 231                                 upd_img_pic.innerHTML = "";
 232                         }
 233                 }
 234         }
 235
 236         if (rows.length > 0) {
 237
 238                 var feedr = document.getElementById("FEEDR-" + feed);
 239                 var feedu = document.getElementById("FEEDU-" + feed);
 240
 241                 feedu.innerHTML = feedu.innerHTML - rows.length;
 242
 243                 if (feedu.innerHTML > 0 && !feedr.className.match("Unread")) {
 244                                 feedr.className = feedr.className + "Unread";
 245                 } else if (feedu.innerHTML <= 0) {
 246                                 feedr.className = feedr.className.replace("Unread", "");
 247                 }
 248
 249                 var query_str = "backend.php?op=rpc&subop=catchupPage&ids=" +
 250                         param_escape(rows.toString());
 251
 252                 notify("Marking this page as read...");
 253
 254                 var button = document.getElementById("btnCatchupPage");
 255
 256                 if (button) {
 257                         button.className = "disabledButton";
 258                         button.href = "";
 259                 }
 260
 261                 xmlhttp.open("GET", query_str, true);
 262                 xmlhttp.onreadystatechange=notify_callback;
 263                 xmlhttp.send(null);
 264
 265         } else {
 266                 notify("No unread items on this page.");
 267
 268         }
 269 }
 270
 271 function catchupAllFeeds() {
 272
 273         if (!xmlhttp_ready(xmlhttp)) {
 274                 printLockingError();
 275                 return
 276         }
 277         var query_str = "backend.php?op=feeds&subop=catchupAll";
 278
 279         notify("Marking all feeds as read...");
 280
 281         xmlhttp.open("GET", query_str, true);
 282         xmlhttp.onreadystatechange=feedlist_callback;
 283         xmlhttp.send(null);
 284
 285 }
 286
 287 function viewfeed(feed, skip, subop) {
 288
 289         enableHotkeys();
 290
 291         var searchbox = document.getElementById("searchbox");
 292
 293         if (searchbox) {
 294                 search_query = searchbox.value;
 295         } else {
 296                 search_query = "";
 297         }
 298
 299 /*      if (active_feed_id == feed && subop != "ForceUpdate") {
 300                 notify("This feed is currently selected.");
 301                 return;
 302         } */
 303
 304         if (skip < 0 || skip > total_feed_entries) {
 305                 return;
 306         }
 307
 308         if (!xmlhttp_ready(xmlhttp)) {
 309                 printLockingError();
 310                 return
 311         }
 312
 313         if (active_feed_id != feed || skip != active_offset) {
 314                 active_post_id = false;
 315         }
 316
 317         active_feed_id = feed;
 318         active_offset = skip;
 319
 320         var query = "backend.php?op=viewfeed&feed=" + param_escape(feed) +
 321                 "&skip=" + param_escape(skip) + "&subop=" + param_escape(subop);
 322
 323         if (search_query != "") {
 324                 query = query + "&search=" + param_escape(search_query);
 325         }
 326
 327         xmlhttp.open("GET", query, true);
 328         xmlhttp.onreadystatechange=viewfeed_callback;
 329         xmlhttp.send(null);
 330
 331         notify("Loading headlines...");
 332
 333 }
 334
 335 function markHeadline(id) {
 336         var row = document.getElementById("RROW-" + id);
 337         if (row) {
 338                 row.className = row.className + "Selected";
 339         }
 340 }
 341
 342 function getFeedIds() {
 343         var content = document.getElementById("feedsList");
 344
 345         var rows = new Array();
 346
 347         for (i = 0; i < content.rows.length; i++) {
 348                 var id = content.rows[i].id.replace("FEEDR-", "");
 349                 if (id.length > 0) {
 350                         rows.push(id);
 351                 }
 352         }
 353
 354         return rows;
 355 }
 356
 357 function cleanSelected(element) {
 358         var content = document.getElementById(element);
 359
 360         var rows = new Array();
 361
 362         for (i = 0; i < content.rows.length; i++) {
 363                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 364         }
 365
 366 }
 367
 368 function view(id,feed_id) {
 369
 370         enableHotkeys();
 371
 372         if (!xmlhttp_ready(xmlhttp_view)) {
 373                 printLockingError();
 374                 return
 375         }
 376
 377         var crow = document.getElementById("RROW-" + id);
 378
 379         if (crow.className.match("Unread")) {
 380                 var umark = document.getElementById("FEEDU-" + feed_id);
 381                 umark.innerHTML = umark.innerHTML - 1;
 382                 crow.className = crow.className.replace("Unread", "");
 383
 384                 if (umark.innerHTML == "0") {
 385                         var feedr = document.getElementById("FEEDR-" + feed_id);
 386                         feedr.className = feedr.className.replace("Unread", "");
 387                 }
 388
 389                 total_unread--;
 390         }
 391
 392         cleanSelected("headlinesList");
 393 //      crow.className = crow.className + "Selected";
 394
 395         var upd_img_pic = document.getElementById("FUPDPIC-" + id);
 396
 397         if (upd_img_pic) {
 398                 upd_img_pic.innerHTML = "";
 399         }
 400
 401 //      document.getElementById('content').innerHTML='Loading, please wait...';
 402
 403         var unread_rows = getVisibleUnreadHeadlines();
 404
 405         if (unread_rows.length == 0) {
 406                 var button = document.getElementById("btnCatchupPage");
 407                 if (button) {
 408                         button.className = "disabledButton";
 409                         button.href = "";
 410                 }
 411         }
 412
 413         active_post_id = id;
 414
 415         xmlhttp_view.open("GET", "backend.php?op=view&id=" + param_escape(id), true);
 416         xmlhttp_view.onreadystatechange=view_callback;
 417         xmlhttp_view.send(null);
 418
 419
 420 }
 421
 422 function timeout() {
 423         scheduleFeedUpdate(true);
 424         setTimeout("timeout()", 1800*1000);
 425 }
 426
 427 function resetSearch() {
 428         document.getElementById("searchbox").value = "";
 429         viewfeed(active_feed_id, 0, "");
 430 }
 431
 432 function search(feed) {
 433         viewfeed(feed, 0, "");
 434 }
 435
 436 function localPiggieFunction(enable) {
 437         if (enable) {
 438                 var query_str = "backend.php?op=feeds&subop=piggie";
 439
 440                 if (xmlhttp_ready(xmlhttp)) {
 441
 442                         xmlhttp.open("GET", query_str, true);
 443                         xmlhttp.onreadystatechange=feedlist_callback;
 444                         xmlhttp.send(null);
 445                 }
 446         }
 447 }
 448
 449 function relativeid_callback() {
 450
 451         if (xmlhttp_rpc.readyState == 4) {
 452                 notify(xmlhttp_rpc.responseText);
 453         }
 454
 455 }
 456
 457 function getVisibleUnreadHeadlines() {
 458         var content = document.getElementById("headlinesList");
 459
 460         var rows = new Array();
 461
 462         for (i = 0; i < content.rows.length; i++) {
 463                 var row_id = content.rows[i].id.replace("RROW-", "");
 464                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 465                                 rows.push(row_id);
 466                 }
 467         }
 468         return rows;
 469 }
 470
 471 function getVisibleHeadlineIds() {
 472
 473         var content = document.getElementById("headlinesList");
 474
 475         var rows = new Array();
 476
 477         for (i = 0; i < content.rows.length; i++) {
 478                 var row_id = content.rows[i].id.replace("RROW-", "");
 479                 if (row_id.length > 0) {
 480                                 rows.push(row_id);
 481                 }
 482         }
 483         return rows;
 484 }
 485
 486 function getFirstVisibleHeadlineId() {
 487         var rows = getVisibleHeadlineIds();
 488         return rows[0];
 489 }
 490
 491 function getLastVisibleHeadlineId() {
 492         var rows = getVisibleHeadlineIds();
 493         return rows[rows.length-1];
 494 }
 495
 496 function moveToPost(mode) {
 497
 498         var rows = getVisibleHeadlineIds();
 499
 500         var prev_id;
 501         var next_id;
 502
 503         if (active_post_id == false) {
 504                 next_id = getFirstVisibleHeadlineId();
 505                 prev_id = getLastVisibleHeadlineId();
 506         } else {
 507                 for (var i = 0; i < rows.length; i++) {
 508                         if (rows[i] == active_post_id) {
 509                                 prev_id = rows[i-1];
 510                                 next_id = rows[i+1];
 511                         }
 512                 }
 513         }
 514
 515         if (mode == "next") {
 516                 if (next_id != undefined) {
 517                         view(next_id, active_feed_id);
 518                 } else {
 519                         _viewfeed_autoselect_first = true;
 520                         viewfeed(active_feed_id, active_offset+15);
 521                 }
 522         }
 523
 524         if (mode == "prev") {
 525                 if ( prev_id != undefined) {
 526                         view(prev_id, active_feed_id);
 527                 } else {
 528                         _viewfeed_autoselect_last = true;
 529                         viewfeed(active_feed_id, active_offset-15);
 530                 }
 531         }
 532
 533 }
 534
 535 function localHotkeyHandler(keycode) {
 536
 537         if (keycode == 78) {
 538                 return moveToPost('next');
 539         }
 540
 541         if (keycode == 80) {
 542                 return moveToPost('prev');
 543         }
 544
 545         if (keycode == 82) {
 546                 return scheduleFeedUpdate(true);
 547         }
 548
 549         if (keycode == 85) {
 550                 return viewfeed(active_feed_id, active_offset, "ForceUpdate");
 551         }
 552
 553 //      notify("KC: " + keycode);
 554
 555 }
 556
 557
 558 function init() {
 559
 560         // IE kludge
 561
 562         if (xmlhttp && !xmlhttp_rpc) {
 563                 xmlhttp_rpc = xmlhttp;
 564                 xmlhttp_view = xmlhttp;
 565         }
 566
 567         if (!xmlhttp || !xmlhttp_rpc || !xmlhttp_view) {
 568                 document.getElementById("headlines").innerHTML =
 569                         "<b>Fatal error:</b> This program needs XmlHttpRequest " +
 570                         "to function properly. Your browser doesn't seem to support it.";
 571                 return;
 572         }
 573
 574         updateFeedList(false, false);
 575         document.onkeydown = hotkey_handler;
 576         setTimeout("timeout()", 1800*1000);
 577 }