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         }
 120 }
 121
 122 function refetch_callback() {
 123
 124         if (xmlhttp_rpc.readyState == 4) {
 125                 notify("All feeds updated");
 126                 var container = document.getElementById('feeds');
 127                 container.innerHTML = xmlhttp_rpc.responseText;
 128                 document.title = "Tiny Tiny RSS";
 129         }
 130 }
 131
 132 function scheduleFeedUpdate(force) {
 133
 134         notify("Updating feeds in background...");
 135
 136         document.title = "Tiny Tiny RSS - Updating...";
 137
 138         var query_str = "backend.php?op=rpc&subop=";
 139
 140         if (force) {
 141                 query_str = query_str + "forceUpdateAllFeeds";
 142         } else {
 143                 query_str = query_str + "updateAllFeeds";
 144         }
 145
 146         if (xmlhttp_ready(xmlhttp_rpc)) {
 147                 xmlhttp_rpc.open("GET", query_str, true);
 148                 xmlhttp_rpc.onreadystatechange=refetch_callback;
 149                 xmlhttp_rpc.send(null);
 150         } else {
 151                 printLockingError();
 152         }
 153 }
 154
 155 function updateFeedList(silent, fetch) {
 156
 157         if (silent != true) {
 158                 notify("Loading feed list...");
 159         }
 160
 161         var query_str = "backend.php?op=feeds";
 162
 163         if (fetch) query_str = query_str + "&fetch=yes";
 164
 165         if (xmlhttp_ready(xmlhttp)) {
 166                 xmlhttp.open("GET", query_str, true);
 167                 xmlhttp.onreadystatechange=feedlist_callback;
 168                 xmlhttp.send(null);
 169         } else {
 170                 printLockingError();
 171         }
 172 }
 173
 174 function catchupPage(feed) {
 175
 176         if (!xmlhttp_ready(xmlhttp)) {
 177                 printLockingError();
 178                 return
 179         }
 180
 181         var content = document.getElementById("headlinesList");
 182
 183         var rows = new Array();
 184
 185         for (i = 0; i < content.rows.length; i++) {
 186                 var row_id = content.rows[i].id.replace("RROW-", "");
 187                 if (row_id.length > 0) {
 188                         if (content.rows[i].className.match("Unread")) {
 189                                 rows.push(row_id);
 190                                 content.rows[i].className = content.rows[i].className.replace("Unread", "");
 191                         }
 192                 }
 193         }
 194
 195         if (rows.length > 0) {
 196
 197                 var feedr = document.getElementById("FEEDR-" + feed);
 198                 var feedu = document.getElementById("FEEDU-" + feed);
 199
 200                 feedu.innerHTML = feedu.innerHTML - rows.length;
 201
 202                 if (feedu.innerHTML > 0 && !feedr.className.match("Unread")) {
 203                                 feedr.className = feedr.className + "Unread";
 204                 } else if (feedu.innerHTML <= 0) {
 205                                 feedr.className = feedr.className.replace("Unread", "");
 206                 }
 207
 208                 var query_str = "backend.php?op=rpc&subop=catchupPage&ids=" +
 209                         param_escape(rows.toString());
 210
 211                 notify("Marking this page as read...");
 212
 213                 xmlhttp.open("GET", query_str, true);
 214                 xmlhttp.onreadystatechange=notify_callback;
 215                 xmlhttp.send(null);
 216
 217         } else {
 218                 notify("No unread items on this page.");
 219
 220         }
 221 }
 222
 223 function catchupAllFeeds() {
 224
 225         if (!xmlhttp_ready(xmlhttp)) {
 226                 printLockingError();
 227                 return
 228         }
 229         var query_str = "backend.php?op=feeds&subop=catchupAll";
 230
 231         notify("Marking all feeds as read...");
 232
 233         xmlhttp.open("GET", query_str, true);
 234         xmlhttp.onreadystatechange=feedlist_callback;
 235         xmlhttp.send(null);
 236
 237 }
 238
 239 function viewfeed(feed, skip, subop) {
 240
 241         enableHotkeys();
 242
 243         var searchbox = document.getElementById("searchbox");
 244
 245         if (searchbox) {
 246                 search_query = searchbox.value;
 247         } else {
 248                 search_query = "";
 249         }
 250
 251 /*      if (active_feed_id == feed && subop != "ForceUpdate") {
 252                 notify("This feed is currently selected.");
 253                 return;
 254         } */
 255
 256         if (skip < 0 || skip > total_feed_entries) {
 257                 return;
 258         }
 259
 260         if (!xmlhttp_ready(xmlhttp)) {
 261                 printLockingError();
 262                 return
 263         }
 264
 265         if (active_feed_id != feed || skip != active_offset) {
 266                 active_post_id = false;
 267         }
 268
 269         active_feed_id = feed;
 270         active_offset = skip;
 271
 272         var query = "backend.php?op=viewfeed&feed=" + param_escape(feed) +
 273                 "&skip=" + param_escape(skip) + "&subop=" + param_escape(subop);
 274
 275         if (search_query != "") {
 276                 query = query + "&search=" + param_escape(search_query);
 277         }
 278
 279         xmlhttp.open("GET", query, true);
 280         xmlhttp.onreadystatechange=viewfeed_callback;
 281         xmlhttp.send(null);
 282
 283         notify("Loading headlines...");
 284
 285 }
 286
 287 function markHeadline(id) {
 288         var row = document.getElementById("RROW-" + id);
 289         if (row) {
 290                 row.className = row.className + "Selected";
 291         }
 292 }
 293
 294 function cleanSelected(element) {
 295         var content = document.getElementById(element);
 296
 297         var rows = new Array();
 298
 299         for (i = 0; i < content.rows.length; i++) {
 300                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 301         }
 302
 303 }
 304
 305 function view(id,feed_id) {
 306
 307         enableHotkeys();
 308
 309         if (!xmlhttp_ready(xmlhttp_view)) {
 310                 printLockingError();
 311                 return
 312         }
 313
 314         var crow = document.getElementById("RROW-" + id);
 315
 316         if (crow.className.match("Unread")) {
 317                 var umark = document.getElementById("FEEDU-" + feed_id);
 318                 umark.innerHTML = umark.innerHTML - 1;
 319                 crow.className = crow.className.replace("Unread", "");
 320
 321                 if (umark.innerHTML == "0") {
 322                         var feedr = document.getElementById("FEEDR-" + feed_id);
 323                         feedr.className = feedr.className.replace("Unread", "");
 324                 }
 325
 326                 total_unread--;
 327         }
 328
 329         cleanSelected("headlinesList");
 330
 331         crow.className = crow.className + "Selected";
 332
 333         var upd_img_pic = document.getElementById("FUPDPIC-" + id);
 334
 335         if (upd_img_pic) {
 336                 upd_img_pic.innerHTML = "";
 337         }
 338
 339 //      document.getElementById('content').innerHTML='Loading, please wait...';
 340
 341         active_post_id = id;
 342
 343         xmlhttp_view.open("GET", "backend.php?op=view&id=" + param_escape(id), true);
 344         xmlhttp_view.onreadystatechange=view_callback;
 345         xmlhttp_view.send(null);
 346
 347
 348 }
 349
 350 function timeout() {
 351         scheduleFeedUpdate(true);
 352         setTimeout("timeout()", 1800*1000);
 353 }
 354
 355 function resetSearch() {
 356         document.getElementById("searchbox").value = "";
 357         viewfeed(active_feed_id, 0, "");
 358 }
 359
 360 function search(feed) {
 361         viewfeed(feed, 0, "");
 362 }
 363
 364 function localPiggieFunction(enable) {
 365         if (enable) {
 366                 var query_str = "backend.php?op=feeds&subop=piggie";
 367
 368                 if (xmlhttp_ready(xmlhttp)) {
 369
 370                         xmlhttp.open("GET", query_str, true);
 371                         xmlhttp.onreadystatechange=feedlist_callback;
 372                         xmlhttp.send(null);
 373                 }
 374         }
 375 }
 376
 377 function relativeid_callback() {
 378
 379         if (xmlhttp_rpc.readyState == 4) {
 380                 notify(xmlhttp_rpc.responseText);
 381         }
 382
 383 }
 384
 385 function getVisibleHeadlineIds() {
 386
 387         var content = document.getElementById("headlinesList");
 388
 389         var rows = new Array();
 390
 391         for (i = 0; i < content.rows.length; i++) {
 392                 var row_id = content.rows[i].id.replace("RROW-", "");
 393                 if (row_id.length > 0) {
 394                                 rows.push(row_id);
 395                 }
 396         }
 397         return rows;
 398 }
 399
 400 function getFirstVisibleHeadlineId() {
 401         var rows = getVisibleHeadlineIds();
 402         return rows[0];
 403 }
 404
 405 function getLastVisibleHeadlineId() {
 406         var rows = getVisibleHeadlineIds();
 407         return rows[rows.length-1];
 408 }
 409
 410 function moveToPost(mode) {
 411
 412         var rows = getVisibleHeadlineIds();
 413
 414         var prev_id;
 415         var next_id;
 416
 417         if (active_post_id == false) {
 418                 next_id = getFirstVisibleHeadlineId();
 419                 prev_id = getLastVisibleHeadlineId();
 420         } else {
 421                 for (var i = 0; i < rows.length; i++) {
 422                         if (rows[i] == active_post_id) {
 423                                 prev_id = rows[i-1];
 424                                 next_id = rows[i+1];
 425                         }
 426                 }
 427         }
 428
 429         var content = document.getElementById("headlinesList");
 430
 431         if (mode == "next") {
 432                 if (next_id != undefined) {
 433                         view(next_id, active_feed_id);
 434                 } else {
 435                         _viewfeed_autoselect_first = true;
 436                         viewfeed(active_feed_id, active_offset+15);
 437                 }
 438         }
 439
 440         if (mode == "prev") {
 441                 if ( prev_id != undefined) {
 442                         view(prev_id, active_feed_id);
 443                 } else {
 444                         _viewfeed_autoselect_last = true;
 445                         viewfeed(active_feed_id, active_offset-15);
 446                 }
 447         }
 448
 449 }
 450
 451 function localHotkeyHandler(keycode) {
 452
 453         if (keycode == 78) {
 454                 return moveToPost('next');
 455         }
 456
 457         if (keycode == 80) {
 458                 return moveToPost('prev');
 459         }
 460
 461         if (keycode == 82) {
 462                 return scheduleFeedUpdate(true);
 463         }
 464
 465         if (keycode == 85) {
 466                 return viewfeed(active_feed_id, active_offset, "ForceUpdate");
 467         }
 468
 469 //      notify("KC: " + keycode);
 470
 471 }
 472
 473
 474 function init() {
 475
 476         // IE kludge
 477
 478         if (xmlhttp && !xmlhttp_rpc) {
 479                 xmlhttp_rpc = xmlhttp;
 480                 xmlhttp_view = xmlhttp;
 481         }
 482
 483         if (!xmlhttp || !xmlhttp_rpc || !xmlhttp_view) {
 484                 document.getElementById("headlines").innerHTML =
 485                         "<b>Fatal error:</b> This program needs XmlHttpRequest " +
 486                         "to function properly. Your browser doesn't seem to support it.";
 487                 return;
 488         }
 489
 490         updateFeedList(false, false);
 491         document.onkeydown = hotkey_handler;
 492         setTimeout("timeout()", 1800*1000);
 493 }