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                 notify("");
 109
 110         }
 111 }
 112
 113 function view_callback() {
 114         var container = document.getElementById('content');
 115         if (xmlhttp_view.readyState == 4) {
 116                 container.innerHTML=xmlhttp_view.responseText;
 117         }
 118 }
 119
 120 function refetch_callback() {
 121
 122         if (xmlhttp_rpc.readyState == 4) {
 123                 notify("All feeds updated");
 124                 var container = document.getElementById('feeds');
 125                 container.innerHTML = xmlhttp_rpc.responseText;
 126                 document.title = "Tiny Tiny RSS";
 127         }
 128 }
 129
 130 function scheduleFeedUpdate(force) {
 131
 132         notify("Updating feeds in background...");
 133
 134         document.title = "Tiny Tiny RSS - Updating...";
 135
 136         var query_str = "backend.php?op=rpc&subop=";
 137
 138         if (force) {
 139                 query_str = query_str + "forceUpdateAllFeeds";
 140         } else {
 141                 query_str = query_str + "updateAllFeeds";
 142         }
 143
 144         if (xmlhttp_ready(xmlhttp_rpc)) {
 145                 xmlhttp_rpc.open("GET", query_str, true);
 146                 xmlhttp_rpc.onreadystatechange=refetch_callback;
 147                 xmlhttp_rpc.send(null);
 148         } else {
 149                 printLockingError();
 150         }
 151 }
 152
 153 function updateFeedList(silent, fetch) {
 154
 155         if (silent != true) {
 156                 notify("Loading feed list...");
 157         }
 158
 159         var query_str = "backend.php?op=feeds";
 160
 161         if (fetch) query_str = query_str + "&fetch=yes";
 162
 163         if (xmlhttp_ready(xmlhttp)) {
 164                 xmlhttp.open("GET", query_str, true);
 165                 xmlhttp.onreadystatechange=feedlist_callback;
 166                 xmlhttp.send(null);
 167         } else {
 168                 printLockingError();
 169         }
 170 }
 171
 172 function catchupPage(feed) {
 173
 174         if (!xmlhttp_ready(xmlhttp)) {
 175                 printLockingError();
 176                 return
 177         }
 178
 179         var content = document.getElementById("headlinesList");
 180
 181         var rows = new Array();
 182
 183         for (i = 0; i < content.rows.length; i++) {
 184                 var row_id = content.rows[i].id.replace("RROW-", "");
 185                 if (row_id.length > 0) {
 186                         if (content.rows[i].className.match("Unread")) {
 187                                 rows.push(row_id);
 188                                 content.rows[i].className = content.rows[i].className.replace("Unread", "");
 189                         }
 190                 }
 191         }
 192
 193         if (rows.length > 0) {
 194
 195                 var feedr = document.getElementById("FEEDR-" + feed);
 196                 var feedu = document.getElementById("FEEDU-" + feed);
 197
 198                 feedu.innerHTML = feedu.innerHTML - rows.length;
 199
 200                 if (feedu.innerHTML > 0 && !feedr.className.match("Unread")) {
 201                                 feedr.className = feedr.className + "Unread";
 202                 } else if (feedu.innerHTML <= 0) {
 203                                 feedr.className = feedr.className.replace("Unread", "");
 204                 }
 205
 206                 var query_str = "backend.php?op=rpc&subop=catchupPage&ids=" +
 207                         param_escape(rows.toString());
 208
 209                 notify("Marking this page as read...");
 210
 211                 xmlhttp.open("GET", query_str, true);
 212                 xmlhttp.onreadystatechange=notify_callback;
 213                 xmlhttp.send(null);
 214
 215         } else {
 216                 notify("No unread items on this page.");
 217
 218         }
 219 }
 220
 221 function catchupAllFeeds() {
 222
 223         if (!xmlhttp_ready(xmlhttp)) {
 224                 printLockingError();
 225                 return
 226         }
 227         var query_str = "backend.php?op=feeds&subop=catchupAll";
 228
 229         notify("Marking all feeds as read...");
 230
 231         xmlhttp.open("GET", query_str, true);
 232         xmlhttp.onreadystatechange=feedlist_callback;
 233         xmlhttp.send(null);
 234
 235 }
 236
 237 function viewfeed(feed, skip, subop) {
 238
 239         enableHotkeys();
 240
 241         var searchbox = document.getElementById("searchbox");
 242
 243         if (searchbox) {
 244                 search_query = searchbox.value;
 245         } else {
 246                 search_query = "";
 247         }
 248
 249 /*      if (active_feed_id == feed && subop != "ForceUpdate") {
 250                 notify("This feed is currently selected.");
 251                 return;
 252         } */
 253
 254         if (skip < 0 || skip > total_feed_entries) {
 255                 return;
 256         }
 257
 258         if (!xmlhttp_ready(xmlhttp)) {
 259                 printLockingError();
 260                 return
 261         }
 262
 263         active_feed_id = feed;
 264         active_post_id = false;
 265         active_offset = skip;
 266
 267         var query = "backend.php?op=viewfeed&feed=" + param_escape(feed) +
 268                 "&skip=" + param_escape(skip) + "&subop=" + param_escape(subop);
 269
 270         if (search_query != "") {
 271                 query = query + "&search=" + param_escape(search_query);
 272         }
 273
 274         xmlhttp.open("GET", query, true);
 275         xmlhttp.onreadystatechange=viewfeed_callback;
 276         xmlhttp.send(null);
 277
 278         notify("Loading headlines...");
 279
 280 }
 281
 282 function cleanSelected(element) {
 283         var content = document.getElementById(element);
 284
 285         var rows = new Array();
 286
 287         for (i = 0; i < content.rows.length; i++) {
 288                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 289         }
 290
 291 }
 292
 293 function view(id,feed_id) {
 294
 295         enableHotkeys();
 296
 297         if (!xmlhttp_ready(xmlhttp_view)) {
 298                 printLockingError();
 299                 return
 300         }
 301
 302         var crow = document.getElementById("RROW-" + id);
 303
 304         if (crow.className.match("Unread")) {
 305                 var umark = document.getElementById("FEEDU-" + feed_id);
 306                 umark.innerHTML = umark.innerHTML - 1;
 307                 crow.className = crow.className.replace("Unread", "");
 308
 309                 if (umark.innerHTML == "0") {
 310                         var feedr = document.getElementById("FEEDR-" + feed_id);
 311                         feedr.className = feedr.className.replace("Unread", "");
 312                 }
 313
 314                 total_unread--;
 315         }
 316
 317         cleanSelected("headlinesList");
 318
 319         crow.className = crow.className + "Selected";
 320
 321         var upd_img_pic = document.getElementById("FUPDPIC-" + id);
 322
 323         if (upd_img_pic) {
 324                 upd_img_pic.innerHTML = "";
 325         }
 326
 327         document.getElementById('content').innerHTML='Loading, please wait...';
 328
 329         active_post_id = id;
 330
 331         xmlhttp_view.open("GET", "backend.php?op=view&id=" + param_escape(id), true);
 332         xmlhttp_view.onreadystatechange=view_callback;
 333         xmlhttp_view.send(null);
 334
 335
 336 }
 337
 338 function timeout() {
 339         scheduleFeedUpdate(true);
 340         setTimeout("timeout()", 1800*1000);
 341 }
 342
 343 function resetSearch() {
 344         document.getElementById("searchbox").value = "";
 345         viewfeed(active_feed_id, 0, "");
 346 }
 347
 348 function search(feed) {
 349         viewfeed(feed, 0, "");
 350 }
 351
 352 function localPiggieFunction(enable) {
 353         if (enable) {
 354                 var query_str = "backend.php?op=feeds&subop=piggie";
 355
 356                 if (xmlhttp_ready(xmlhttp)) {
 357
 358                         xmlhttp.open("GET", query_str, true);
 359                         xmlhttp.onreadystatechange=feedlist_callback;
 360                         xmlhttp.send(null);
 361                 }
 362         }
 363 }
 364
 365 function relativeid_callback() {
 366
 367         if (xmlhttp_rpc.readyState == 4) {
 368                 notify(xmlhttp_rpc.responseText);
 369         }
 370
 371 }
 372
 373 function getVisibleHeadlineIds() {
 374
 375         var content = document.getElementById("headlinesList");
 376
 377         var rows = new Array();
 378
 379         for (i = 0; i < content.rows.length; i++) {
 380                 var row_id = content.rows[i].id.replace("RROW-", "");
 381                 if (row_id.length > 0) {
 382                                 rows.push(row_id);
 383                 }
 384         }
 385         return rows;
 386 }
 387
 388 function getFirstVisibleHeadlineId() {
 389         var rows = getVisibleHeadlineIds();
 390         return rows[0];
 391 }
 392
 393 function getLastVisibleHeadlineId() {
 394         var rows = getVisibleHeadlineIds();
 395         return rows[rows.length-1];
 396 }
 397
 398 function moveToPost(mode) {
 399
 400         var rows = getVisibleHeadlineIds();
 401
 402         var prev_id;
 403         var next_id;
 404
 405         if (active_post_id == false) {
 406                 next_id = getFirstVisibleHeadlineId();
 407                 prev_id = getLastVisibleHeadlineId();
 408         } else {
 409                 for (var i = 0; i < rows.length; i++) {
 410                         if (rows[i] == active_post_id) {
 411                                 prev_id = rows[i-1];
 412                                 next_id = rows[i+1];
 413                         }
 414                 }
 415         }
 416
 417         var content = document.getElementById("headlinesList");
 418
 419         if (mode == "next") {
 420                 if (next_id != undefined) {
 421                         view(next_id, active_feed_id);
 422                 } else {
 423                         _viewfeed_autoselect_first = true;
 424                         viewfeed(active_feed_id, active_offset+15);
 425                 }
 426         }
 427
 428         if (mode == "prev") {
 429                 if ( prev_id != undefined) {
 430                         view(prev_id, active_feed_id);
 431                 } else {
 432                         _viewfeed_autoselect_last = true;
 433                         viewfeed(active_feed_id, active_offset-15);
 434                 }
 435         }
 436
 437 }
 438
 439 function localHotkeyHandler(keycode) {
 440
 441         if (keycode == 78) {
 442                 return moveToPost('next');
 443         }
 444
 445         if (keycode == 80) {
 446                 return moveToPost('prev');
 447         }
 448
 449         if (keycode == 82) {
 450                 return scheduleFeedUpdate(true);
 451         }
 452
 453         if (keycode == 85) {
 454                 return viewfeed(active_feed_id, active_offset, "ForceUpdate");
 455         }
 456
 457 //      notify("KC: " + keycode);
 458
 459 }
 460
 461
 462 function init() {
 463
 464         // IE kludge
 465
 466         if (xmlhttp && !xmlhttp_rpc) {
 467                 xmlhttp_rpc = xmlhttp;
 468                 xmlhttp_view = xmlhttp;
 469         }
 470
 471         if (!xmlhttp || !xmlhttp_rpc || !xmlhttp_view) {
 472                 document.getElementById("headlines").innerHTML =
 473                         "<b>Fatal error:</b> This program needs XmlHttpRequest " +
 474                         "to function properly. Your browser doesn't seem to support it.";
 475                 return;
 476         }
 477
 478         updateFeedList(false, false);
 479         document.onkeydown = hotkey_handler;
 480         setTimeout("timeout()", 1800*1000);
 481 }