functions.js

   1 var hotkeys_enabled = true;
   2 var debug_mode_enabled = false;
   3 var xmlhttp_rpc = Ajax.getTransport();
   4
   5 function browser_has_opacity() {
   6         return navigator.userAgent.match("Gecko") != null ||
   7                 navigator.userAgent.match("Opera") != null;
   8 }
   9
  10 function is_opera() {
  11         return navigator.userAgent.match("Opera");
  12 }
  13
  14 function is_khtml() {
  15         return navigator.userAgent.match("KHTML");
  16 }
  17
  18 function is_safari() {
  19         return navigator.userAgent.match("Safari");
  20 }
  21
  22 function exception_error(location, e, silent) {
  23         var msg;
  24
  25         if (e.fileName) {
  26                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  27
  28                 msg = "Exception: " + e.name + ", " + e.message +
  29                         "\nFunction: " + location + "()" +
  30                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  31
  32         } else {
  33                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  34         }
  35
  36         debug("<b>EXCEPTION: " + msg + "</b>");
  37
  38         if (!silent) {
  39                 alert(msg);
  40         }
  41 }
  42
  43 function disableHotkeys() {
  44         hotkeys_enabled = false;
  45 }
  46
  47 function enableHotkeys() {
  48         hotkeys_enabled = true;
  49 }
  50
  51 function xmlhttp_ready(obj) {
  52         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  53 }
  54
  55 function logout_callback() {
  56         var container = document.getElementById('notify');
  57         if (xmlhttp.readyState == 4) {
  58                 try {
  59                         var date = new Date();
  60                         var timestamp = Math.round(date.getTime() / 1000);
  61                         window.location.href = "tt-rss.php";
  62                 } catch (e) {
  63                         exception_error("logout_callback", e);
  64                 }
  65         }
  66 }
  67
  68 function notify_callback() {
  69         var container = document.getElementById('notify');
  70         if (xmlhttp.readyState == 4) {
  71                 container.innerHTML=xmlhttp.responseText;
  72         }
  73 }
  74
  75 function rpc_notify_callback() {
  76         var container = document.getElementById('notify');
  77         if (xmlhttp_rpc.readyState == 4) {
  78                 container.innerHTML=xmlhttp_rpc.responseText;
  79         }
  80 }
  81
  82 function param_escape(arg) {
  83         if (typeof encodeURIComponent != 'undefined')
  84                 return encodeURIComponent(arg);
  85         else
  86                 return escape(arg);
  87 }
  88
  89 function param_unescape(arg) {
  90         if (typeof decodeURIComponent != 'undefined')
  91                 return decodeURIComponent(arg);
  92         else
  93                 return unescape(arg);
  94 }
  95
  96 function delay(gap) {
  97         var then,now;
  98         then=new Date().getTime();
  99         now=then;
 100         while((now-then)<gap) {
 101                 now=new Date().getTime();
 102         }
 103 }
 104
 105 var notify_hide_timerid = false;
 106 var notify_last_doc = false;
 107
 108 var notify_effect = false;
 109
 110 function hide_notify() {
 111         if (notify_last_doc) {
 112                 var n = notify_last_doc.getElementById("notify");
 113                 n.style.display = "none";
 114
 115 /*              if (browser_has_opacity()) {
 116                         if (notify_opacity >= 0) {
 117                                 notify_opacity = notify_opacity - 0.1;
 118                                 n.style.opacity = notify_opacity;
 119                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
 120                         } else {
 121                                 n.style.display = "none";
 122                                 n.style.opacity = 1;
 123                         }
 124                 } else {
 125                         n.style.display = "none";
 126                 } */
 127         }
 128 }
 129
 130 function notify_real(msg, doc, no_hide, is_err) {
 131
 132         var n = doc.getElementById("notify");
 133         var nb = doc.getElementById("notify_body");
 134
 135         if (!n || !nb) return;
 136
 137         if (notify_hide_timerid) {
 138                 window.clearTimeout(notify_hide_timerid);
 139         }
 140
 141         notify_last_doc = doc;
 142         notify_opacity = 1;
 143
 144         if (msg == "") {
 145                 if (n.style.display == "block") {
 146                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 147                 }
 148                 return;
 149         } else {
 150                 n.style.display = "block";
 151         }
 152
 153         if (is_err) {
 154                 n.className = "notifyError";
 155 //              n.style.backgroundColor = "#ffcccc";
 156 //              n.style.color = "black";
 157 //              n.style.borderColor = "#ff0000";
 158                 msg = "<img src='images/sign_excl.png'> " + msg;
 159         } else {
 160                 n.className = "notify";
 161 //              n.style.backgroundColor = "#fff7d5";
 162 //              n.style.borderColor = "#d7c47a";
 163 //              n.style.color = "black";
 164                 msg = "<img src='images/sign_info.png'> " + msg;
 165         }
 166
 167 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 168
 169         nb.innerHTML = msg;
 170
 171         if (!no_hide) {
 172                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 173         }
 174 }
 175
 176 function p_notify(msg, no_hide, is_err) {
 177         notify_real(msg, document, no_hide, is_err);
 178 }
 179
 180 function notify(msg, no_hide, is_err) {
 181         notify_real(msg, document, no_hide, is_err);
 182 }
 183
 184 function printLockingError() {
 185         notify("Please wait until operation finishes");}
 186
 187 function hotkey_handler(e) {
 188
 189         try {
 190
 191                 var keycode;
 192                 var shift_key = false;
 193
 194                 try {
 195                         shift_key = e.shiftKey;
 196                 } catch (e) {
 197
 198                 }
 199
 200                 if (!hotkeys_enabled) return;
 201
 202                 if (window.event) {
 203                         keycode = window.event.keyCode;
 204                 } else if (e) {
 205                         keycode = e.which;
 206                 }
 207
 208                 if (keycode == 82) { // r
 209                         return scheduleFeedUpdate(true);
 210                 }
 211
 212                 if (keycode == 83) { // s
 213                         return displayDlg("search", getActiveFeedId());
 214                 }
 215
 216                 if (keycode == 85) { // u
 217                         if (getActiveFeedId()) {
 218                                 return viewfeed(getActiveFeedId(), "ForceUpdate");
 219                         }
 220                 }
 221
 222                 if (keycode == 65) { // a
 223                         return toggleDispRead();
 224                 }
 225
 226                 var feedlist = document.getElementById('feedList');
 227
 228                 if (keycode == 74) { // j
 229                         var feed = getActiveFeedId();
 230                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 231                         if (new_feed) viewfeed(new_feed, '');
 232                 }
 233
 234                 if (keycode == 75) { // k
 235                         var feed = getActiveFeedId();
 236                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 237                         if (new_feed) viewfeed(new_feed, '');
 238                 }
 239
 240                 if (!is_safari() && (keycode == 78 || keycode == 40)) { // n, down
 241                         if (typeof moveToPost != 'undefined') {
 242                                 return moveToPost('next');
 243                         }
 244                 }
 245
 246                 if (!is_safari() && (keycode == 80 || keycode == 38)) { // p, up
 247                         if (typeof moveToPost != 'undefined') {
 248                                 return moveToPost('prev');
 249                         }
 250                 }
 251
 252                 if (keycode == 68 && shift_key) { // d
 253                         if (!debug_mode_enabled) {
 254                                 document.getElementById('debug_output').style.display = 'block';
 255                                 debug('debug mode activated');
 256                         } else {
 257                                 document.getElementById('debug_output').style.display = 'none';
 258                         }
 259
 260                         debug_mode_enabled = !debug_mode_enabled;
 261                 }
 262
 263                 if (keycode == 190 && shift_key) { // >
 264                         viewFeedGoPage(1);
 265                 }
 266
 267                 if (keycode == 188 && shift_key) { // <
 268                         viewFeedGoPage(-1);
 269                 }
 270
 271                 if (keycode == 191 && shift_key) { // ?
 272                         viewFeedGoPage(0);
 273                 }
 274
 275                 if (keycode == 69 && shift_key) { // e
 276                         return editFeedDlg(getActiveFeedId());
 277                 }
 278
 279                 if (keycode == 70 && shift_key) { // f
 280                         if (getActiveFeedId()) {
 281                                 return catchupCurrentFeed();
 282                         }
 283                 }
 284
 285                 if (keycode == 80 && shift_key) { // p
 286                         if (getActiveFeedId()) {
 287                                 return catchupPage();
 288                         }
 289                 }
 290
 291                 if (typeof localHotkeyHandler != 'undefined') {
 292                         try {
 293                                 return localHotkeyHandler(e);
 294                         } catch (e) {
 295                                 exception_error("hotkey_handler, local:", e);
 296                         }
 297                 }
 298
 299                 debug("KP=" + keycode);
 300         } catch (e) {
 301                 exception_error("hotkey_handler", e);
 302         }
 303 }
 304
 305 function cleanSelectedList(element) {
 306         var content = document.getElementById(element);
 307
 308         if (!document.getElementById("feedCatHolder")) {
 309                 for (i = 0; i < content.childNodes.length; i++) {
 310                         var child = content.childNodes[i];
 311                         try {
 312                                 child.className = child.className.replace("Selected", "");
 313                         } catch (e) {
 314                                 //
 315                         }
 316                 }
 317         } else {
 318                 for (i = 0; i < content.childNodes.length; i++) {
 319                         var child = content.childNodes[i];
 320                         if (child.id == "feedCatHolder") {
 321                                 debug(child.id);
 322                                 var fcat = child.lastChild;
 323                                 for (j = 0; j < fcat.childNodes.length; j++) {
 324                                         var feed = fcat.childNodes[j];
 325                                         feed.className = feed.className.replace("Selected", "");
 326                                 }
 327                         }
 328                 }
 329         }
 330 }
 331
 332
 333 function cleanSelected(element) {
 334         var content = document.getElementById(element);
 335
 336         for (i = 0; i < content.rows.length; i++) {
 337                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 338         }
 339 }
 340
 341 function getVisibleUnreadHeadlines() {
 342         var content = document.getElementById("headlinesList");
 343
 344         var rows = new Array();
 345
 346         for (i = 0; i < content.rows.length; i++) {
 347                 var row_id = content.rows[i].id.replace("RROW-", "");
 348                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 349                                 rows.push(row_id);
 350                 }
 351         }
 352         return rows;
 353 }
 354
 355 function getVisibleHeadlineIds() {
 356
 357         var content = document.getElementById("headlinesList");
 358
 359         var rows = new Array();
 360
 361         for (i = 0; i < content.rows.length; i++) {
 362                 var row_id = content.rows[i].id.replace("RROW-", "");
 363                 if (row_id.length > 0) {
 364                                 rows.push(row_id);
 365                 }
 366         }
 367         return rows;
 368 }
 369
 370 function getFirstVisibleHeadlineId() {
 371         var rows = getVisibleHeadlineIds();
 372         return rows[0];
 373 }
 374
 375 function getLastVisibleHeadlineId() {
 376         var rows = getVisibleHeadlineIds();
 377         return rows[rows.length-1];
 378 }
 379
 380 function markHeadline(id) {
 381         var row = document.getElementById("RROW-" + id);
 382         if (row) {
 383                 var is_active = false;
 384
 385                 if (row.className.match("Active")) {
 386                         is_active = true;
 387                 }
 388                 row.className = row.className.replace("Selected", "");
 389                 row.className = row.className.replace("Active", "");
 390                 row.className = row.className.replace("Insensitive", "");
 391
 392                 if (is_active) {
 393                         row.className = row.className = "Active";
 394                 }
 395
 396                 var check = document.getElementById("RCHK-" + id);
 397
 398                 if (check) {
 399                         check.checked = true;
 400                 }
 401
 402                 row.className = row.className + "Selected";
 403
 404         }
 405 }
 406
 407 function getFeedIds() {
 408         var content = document.getElementById("feedsList");
 409
 410         var rows = new Array();
 411
 412         for (i = 0; i < content.rows.length; i++) {
 413                 var id = content.rows[i].id.replace("FEEDR-", "");
 414                 if (id.length > 0) {
 415                         rows.push(id);
 416                 }
 417         }
 418
 419         return rows;
 420 }
 421
 422 function setCookie(name, value, lifetime, path, domain, secure) {
 423
 424         var d = false;
 425
 426         if (lifetime) {
 427                 d = new Date();
 428                 d.setTime(lifetime * 1000);
 429         }
 430
 431         int_setCookie(name, value, d, path, domain, secure);
 432
 433 }
 434
 435 function int_setCookie(name, value, expires, path, domain, secure) {
 436         document.cookie= name + "=" + escape(value) +
 437                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 438                 ((path) ? "; path=" + path : "") +
 439                 ((domain) ? "; domain=" + domain : "") +
 440                 ((secure) ? "; secure" : "");
 441 }
 442
 443 function delCookie(name, path, domain) {
 444         if (getCookie(name)) {
 445                 document.cookie = name + "=" +
 446                 ((path) ? ";path=" + path : "") +
 447                 ((domain) ? ";domain=" + domain : "" ) +
 448                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 449         }
 450 }
 451
 452
 453 function getCookie(name) {
 454
 455         var dc = document.cookie;
 456         var prefix = name + "=";
 457         var begin = dc.indexOf("; " + prefix);
 458         if (begin == -1) {
 459             begin = dc.indexOf(prefix);
 460             if (begin != 0) return null;
 461         }
 462         else {
 463             begin += 2;
 464         }
 465         var end = document.cookie.indexOf(";", begin);
 466         if (end == -1) {
 467             end = dc.length;
 468         }
 469         return unescape(dc.substring(begin + prefix.length, end));
 470 }
 471
 472 function disableContainerChildren(id, disable, doc) {
 473
 474         if (!doc) doc = document;
 475
 476         var container = doc.getElementById(id);
 477
 478         if (!container) {
 479                 //alert("disableContainerChildren: element " + id + " not found");
 480                 return;
 481         }
 482
 483         for (var i = 0; i < container.childNodes.length; i++) {
 484                 var child = container.childNodes[i];
 485
 486                 try {
 487                         child.disabled = disable;
 488                 } catch (E) {
 489
 490                 }
 491
 492                 if (disable) {
 493                         if (child.className && child.className.match("button")) {
 494                                 child.className = "disabledButton";
 495                         }
 496                 } else {
 497                         if (child.className && child.className.match("disabledButton")) {
 498                                 child.className = "button";
 499                         }
 500                 }
 501         }
 502
 503 }
 504
 505 function gotoPreferences() {
 506         document.location.href = "prefs.php";
 507 }
 508
 509 function gotoMain() {
 510         document.location.href = "tt-rss.php";
 511 }
 512
 513 function gotoExportOpml() {
 514         document.location.href = "opml.php?op=Export";
 515 }
 516
 517 function getActiveFeedId() {
 518 //      return getCookie("ttrss_vf_actfeed");
 519         try {
 520                 debug("gAFID: " + active_feed_id);
 521                 return active_feed_id;
 522         } catch (e) {
 523                 exception_error("getActiveFeedId", e);
 524         }
 525 }
 526
 527 function activeFeedIsCat() {
 528         return active_feed_is_cat;
 529 }
 530
 531 function setActiveFeedId(id) {
 532 //      return setCookie("ttrss_vf_actfeed", id);
 533         try {
 534                 debug("sAFID(" + id + ")");
 535                 active_feed_id = id;
 536         } catch (e) {
 537                 exception_error("setActiveFeedId", e);
 538         }
 539 }
 540
 541 function parse_counters(reply, scheduled_call) {
 542         try {
 543
 544                 var feeds_found = 0;
 545
 546                 if (reply.firstChild && reply.firstChild.firstChild) {
 547                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 548                         reply = reply.firstChild;
 549                 }
 550
 551                 for (var l = 0; l < reply.childNodes.length; l++) {
 552                         if (!reply.childNodes[l] ||
 553                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 554                                 // where did this come from?
 555                                 continue;
 556                         }
 557
 558                         var id = reply.childNodes[l].getAttribute("id");
 559                         var t = reply.childNodes[l].getAttribute("type");
 560                         var ctr = reply.childNodes[l].getAttribute("counter");
 561                         var error = reply.childNodes[l].getAttribute("error");
 562                         var has_img = reply.childNodes[l].getAttribute("hi");
 563                         var updated = reply.childNodes[l].getAttribute("updated");
 564
 565                         if (id == "global-unread") {
 566                                 global_unread = ctr;
 567                                 updateTitle();
 568                                 continue;
 569                         }
 570
 571                         if (id == "subscribed-feeds") {
 572                                 feeds_found = ctr;
 573                                 continue;
 574                         }
 575
 576                         if (t == "category") {
 577                                 var catctr = document.getElementById("FCATCTR-" + id);
 578                                 if (catctr) {
 579                                         catctr.innerHTML = "(" + ctr + ")";
 580                                         if (ctr > 0) {
 581                                                 catctr.className = "catCtrHasUnread";
 582                                         } else {
 583                                                 catctr.className = "catCtrNoUnread";
 584                                         }
 585                                 }
 586                                 continue;
 587                         }
 588
 589                         var feedctr = document.getElementById("FEEDCTR-" + id);
 590                         var feedu = document.getElementById("FEEDU-" + id);
 591                         var feedr = document.getElementById("FEEDR-" + id);
 592                         var feed_img = document.getElementById("FIMG-" + id);
 593                         var feedlink = document.getElementById("FEEDL-" + id);
 594                         var feedupd = document.getElementById("FLUPD-" + id);
 595
 596                         if (updated && feedlink) {
 597                                 if (error) {
 598                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 599                                 } else {
 600                                         feedlink.title = "Updated: " + updated;
 601                                 }
 602                         }
 603
 604                         if (updated && feedupd) {
 605                                 if (error) {
 606                                         feedupd.innerHTML = updated + " (Error)";
 607                                 } else {
 608                                         feedupd.innerHTML = updated;
 609                                 }
 610                         }
 611
 612                         if (feedctr && feedu && feedr) {
 613
 614                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 615                                         viewCurrentFeed();
 616                                 }
 617
 618                                 feedu.innerHTML = ctr;
 619
 620                                 if (error) {
 621                                         feedr.className = feedr.className.replace("feed", "error");
 622                                 } else if (id > 0) {
 623                                         feedr.className = feedr.className.replace("error", "feed");
 624                                 }
 625
 626                                 if (ctr > 0) {
 627                                         feedctr.className = "odd";
 628                                         if (!feedr.className.match("Unread")) {
 629                                                 var is_selected = feedr.className.match("Selected");
 630
 631                                                 feedr.className = feedr.className.replace("Selected", "");
 632                                                 feedr.className = feedr.className.replace("Unread", "");
 633
 634                                                 feedr.className = feedr.className + "Unread";
 635
 636                                                 if (is_selected) {
 637                                                         feedr.className = feedr.className + "Selected";
 638                                                 }
 639
 640                                         }
 641                                 } else {
 642                                         feedctr.className = "invisible";
 643                                         feedr.className = feedr.className.replace("Unread", "");
 644                                 }
 645                         }
 646                 }
 647
 648                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 649
 650                 var feeds_stored = number_of_feeds;
 651
 652                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 653
 654                 if (feeds_stored != feeds_found) {
 655                         number_of_feeds = feeds_found;
 656
 657                         if (feeds_stored != 0) {
 658                                 debug("Subscribed feed number changed, refreshing feedlist");
 659                                 setTimeout('updateFeedList(false, false)', 50);
 660                         }
 661                 }
 662
 663         } catch (e) {
 664                 exception_error("parse_counters", e);
 665         }
 666 }
 667
 668 function parse_counters_reply(xmlhttp, scheduled_call) {
 669
 670         if (!xmlhttp.responseXML) {
 671                 notify("refetch_callback: backend did not return valid XML", true, true);
 672                 return;
 673         }
 674
 675         var reply = xmlhttp.responseXML.firstChild;
 676
 677         if (!reply) {
 678                 notify("refetch_callback: backend did not return expected XML object", true, true);
 679                 updateTitle("");
 680                 return;
 681         }
 682
 683         var error_code = false;
 684         var error_msg = false;
 685
 686         if (reply.firstChild) {
 687                 error_code = reply.firstChild.getAttribute("error-code");
 688                 error_msg = reply.firstChild.getAttribute("error-msg");
 689         }
 690
 691         if (!error_code) {
 692                 error_code = reply.getAttribute("error-code");
 693                 error_msg = reply.getAttribute("error-msg");
 694         }
 695
 696         if (error_code && error_code != 0) {
 697                 debug("refetch_callback: got error code " + error_code);
 698                 return fatalError(error_code, error_msg);
 699         }
 700
 701         var counters = reply.firstChild;
 702
 703         parse_counters(counters, scheduled_call);
 704
 705         var runtime_info = counters.nextSibling;
 706
 707         parse_runtime_info(runtime_info);
 708
 709         if (getInitParam("feeds_sort_by_unread") == 1) {
 710                         resort_feedlist();
 711         }
 712
 713         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 714
 715 }
 716
 717 function all_counters_callback() {
 718         if (xmlhttp_rpc.readyState == 4) {
 719                 try {
 720 /*                      if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 721                                 debug("[all_counters_callback] backend did not return valid XML");
 722                                 return;
 723                         }
 724
 725                         debug("in all_counters_callback : " + xmlhttp_rpc.responseXML);
 726
 727                         var reply = xmlhttp_rpc.responseXML.firstChild;
 728
 729                         var counters = reply.firstChild;
 730
 731                         parse_counters(counters);
 732
 733                         var runtime = counters.nextSibling;
 734
 735                         if (runtime) {
 736                                 parse_runtime_info(runtime);
 737                         }
 738
 739                         if (getInitParam("feeds_sort_by_unread") == 1) {
 740                                 resort_feedlist();
 741                         }
 742
 743                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1); */
 744
 745                         debug("in all_counters_callback");
 746
 747                         parse_counters_reply(xmlhttp_rpc);
 748
 749                 } catch (e) {
 750                         exception_error("all_counters_callback", e);
 751                 }
 752         }
 753 }
 754
 755 function get_feed_entry_unread(doc, elem) {
 756
 757         var id = elem.id.replace("FEEDR-", "");
 758
 759         if (id <= 0) {
 760                 return -1;
 761         }
 762
 763         try {
 764                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 765         } catch (e) {
 766                 return -1;
 767         }
 768 }
 769
 770 function resort_category(doc, node) {
 771         debug("resort_category: " + node);
 772
 773         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 774                 for (i = 0; i < node.childNodes.length; i++) {
 775                         if (node.childNodes[i].nodeName != "LI") { continue; }
 776
 777                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 778                                 continue;
 779                         }
 780
 781                         for (j = i+1; j < node.childNodes.length; j++) {
 782                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 783
 784                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 785                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 786
 787                                 if (cur_val > tmp_val) {
 788                                         tempnode_i = node.childNodes[i].cloneNode(true);
 789                                         tempnode_j = node.childNodes[j].cloneNode(true);
 790                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 791                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 792                                 }
 793                         }
 794
 795                 }
 796         }
 797
 798 }
 799
 800 function resort_feedlist() {
 801         debug("resort_feedlist");
 802
 803         var fd = document;
 804
 805         if (fd.getElementById("feedCatHolder")) {
 806
 807                 var feeds = fd.getElementById("feedList");
 808                 var child = feeds.firstChild;
 809
 810                 while (child) {
 811
 812                         if (child.id == "feedCatHolder") {
 813                                 resort_category(fd, child.firstChild);
 814                         }
 815
 816                         child = child.nextSibling;
 817                 }
 818
 819         } else {
 820                 resort_category(fd, fd.getElementById("feedList"));
 821         }
 822 }
 823
 824 function update_all_counters(feed) {
 825         if (xmlhttp_ready(xmlhttp_rpc)) {
 826                 var query = "backend.php?op=rpc&subop=getAllCounters";
 827
 828                 if (feed > 0) {
 829                         query = query + "&aid=" + feed;
 830                 }
 831
 832                 if (tagsAreDisplayed()) {
 833                         query = query + "&omode=lt";
 834                 } else {
 835                         query = query + "&omode=flc";
 836                 }
 837
 838                 debug("update_all_counters QUERY: " + query);
 839
 840                 var date = new Date();
 841                 var timestamp = Math.round(date.getTime() / 1000);
 842                 query = query + "&ts=" + timestamp
 843
 844                 xmlhttp_rpc.open("GET", query, true);
 845                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 846                 xmlhttp_rpc.send(null);
 847         }
 848 }
 849
 850 function popupHelp(tid) {
 851         var w = window.open("backend.php?op=help&tid=" + tid,
 852                 "Popup Help",
 853                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 854 }
 855
 856 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 857   * * @author Sundar Dorai-Raj
 858   * * Email: sdoraira@vt.edu
 859   * * This program is free software; you can redistribute it and/or
 860   * * modify it under the terms of the GNU General Public License
 861   * * as published by the Free Software Foundation; either version 2
 862   * * of the License, or (at your option) any later version,
 863   * * provided that any use properly credits the author.
 864   * * This program is distributed in the hope that it will be useful,
 865   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 866   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 867   * * GNU General Public License for more details at http://www.gnu.org * * */
 868
 869   var numbers=".0123456789";
 870   function isNumeric(x) {
 871     // is x a String or a character?
 872     if(x.length>1) {
 873       // remove negative sign
 874       x=Math.abs(x)+"";
 875       for(j=0;j<x.length;j++) {
 876         // call isNumeric recursively for each character
 877         number=isNumeric(x.substring(j,j+1));
 878         if(!number) return number;
 879       }
 880       return number;
 881     }
 882     else {
 883       // if x is number return true
 884       if(numbers.indexOf(x)>=0) return true;
 885       return false;
 886     }
 887   }
 888
 889
 890 function hideOrShowFeeds(doc, hide) {
 891
 892         debug("hideOrShowFeeds: " + doc + ", " + hide);
 893
 894         var fd = document;
 895
 896         var list = fd.getElementById("feedList");
 897
 898         if (fd.getElementById("feedCatHolder")) {
 899
 900                 var feeds = fd.getElementById("feedList");
 901                 var child = feeds.firstChild;
 902
 903                 while (child) {
 904
 905                         if (child.id == "feedCatHolder") {
 906                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 907                         }
 908
 909                         child = child.nextSibling;
 910                 }
 911
 912         } else {
 913                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 914         }
 915 }
 916
 917 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 918
 919 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 920
 921         var cat_unread = 0;
 922
 923         if (!node) {
 924                 debug("hideOrShowFeeds: passed node is null, aborting");
 925                 return;
 926         }
 927
 928         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 929                 for (i = 0; i < node.childNodes.length; i++) {
 930                         if (node.childNodes[i].nodeName != "LI") { continue; }
 931
 932                         if (node.childNodes[i].style != undefined) {
 933
 934                                 var has_unread = (node.childNodes[i].className != "feed");
 935
 936         //                      debug(node.childNodes[i].id + " --> " + has_unread);
 937
 938                                 if (hide && !has_unread) {
 939                                         node.childNodes[i].style.display = "none";
 940                                 }
 941
 942                                 if (!hide) {
 943                                         node.childNodes[i].style.display = "list-item";
 944                                 }
 945
 946                                 if (has_unread) {
 947                                         node.childNodes[i].style.display = "list-item";
 948                                         cat_unread++;
 949                                 }
 950                         }
 951                 }
 952         }
 953
 954         if (cat_unread == 0) {
 955                 if (cat_node.style == undefined) {
 956                         debug("ERROR: supplied cat_node " + cat_node +
 957                                 " has no styles. WTF?");
 958                         return;
 959                 }
 960                 if (hide) {
 961                         cat_node.style.display = "none";
 962                 } else {
 963                         cat_node.style.display = "list-item";
 964                 }
 965         } else {
 966                 try {
 967                         cat_node.style.display = "list-item";
 968                 } catch (e) {
 969                         debug(e);
 970                 }
 971         }
 972
 973 //      debug("unread for category: " + cat_unread);
 974 }
 975
 976 function selectTableRow(r, do_select) {
 977         r.className = r.className.replace("Selected", "");
 978
 979         if (do_select) {
 980                 r.className = r.className + "Selected";
 981         }
 982 }
 983
 984 function selectTableRowById(elem_id, check_id, do_select) {
 985
 986         try {
 987
 988                 var row = document.getElementById(elem_id);
 989
 990                 if (row) {
 991                         selectTableRow(row, do_select);
 992                 }
 993
 994                 var check = document.getElementById(check_id);
 995
 996                 if (check) {
 997                         check.checked = do_select;
 998                 }
 999         } catch (e) {
1000                 exception_error("selectTableRowById", e);
1001         }
1002 }
1003
1004 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
1005         classcheck, reset_others) {
1006
1007         var content = document.getElementById(content_id);
1008
1009         if (!content) {
1010                 alert("[selectTableRows] Element " + content_id + " not found.");
1011                 return;
1012         }
1013
1014         for (i = 0; i < content.rows.length; i++) {
1015                 if (!classcheck || content.rows[i].className.match(classcheck)) {
1016
1017                         if (content.rows[i].id.match(prefix)) {
1018                                 selectTableRow(content.rows[i], do_select);
1019
1020                                 var row_id = content.rows[i].id.replace(prefix, "");
1021                                 var check = document.getElementById(check_prefix + row_id);
1022
1023                                 if (check) {
1024                                         check.checked = do_select;
1025                                 }
1026                         } else if (reset_others) {
1027                                 selectTableRow(content.rows[i], false);
1028
1029                                 var row_id = content.rows[i].id.replace(prefix, "");
1030                                 var check = document.getElementById(check_prefix + row_id);
1031
1032                                 if (check) {
1033                                         check.checked = false;
1034                                 }
1035
1036                         }
1037                 } else if (reset_others) {
1038                         selectTableRow(content.rows[i], false);
1039
1040                         var row_id = content.rows[i].id.replace(prefix, "");
1041                         var check = document.getElementById(check_prefix + row_id);
1042
1043                         if (check) {
1044                                 check.checked = false;
1045                         }
1046
1047                 }
1048         }
1049 }
1050
1051 function getSelectedTableRowIds(content_id, prefix) {
1052
1053         var content = document.getElementById(content_id);
1054
1055         if (!content) {
1056                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
1057                 return;
1058         }
1059
1060         var sel_rows = new Array();
1061
1062         for (i = 0; i < content.rows.length; i++) {
1063                 if (content.rows[i].id.match(prefix) &&
1064                                 content.rows[i].className.match("Selected")) {
1065
1066                         var row_id = content.rows[i].id.replace(prefix + "-", "");
1067                         sel_rows.push(row_id);
1068                 }
1069         }
1070
1071         return sel_rows;
1072
1073 }
1074
1075 function toggleSelectRowById(sender, id) {
1076         var row = document.getElementById(id);
1077
1078         if (sender.checked) {
1079                 if (!row.className.match("Selected")) {
1080                         row.className = row.className + "Selected";
1081                 }
1082         } else {
1083                 if (row.className.match("Selected")) {
1084                         row.className = row.className.replace("Selected", "");
1085                 }
1086         }
1087 }
1088
1089 function toggleSelectListRow(sender) {
1090         var parent_row = sender.parentNode;
1091
1092         if (sender.checked) {
1093                 if (!parent_row.className.match("Selected")) {
1094                         parent_row.className = parent_row.className + "Selected";
1095                 }
1096         } else {
1097                 if (parent_row.className.match("Selected")) {
1098                         parent_row.className = parent_row.className.replace("Selected", "");
1099                 }
1100         }
1101 }
1102
1103
1104 function toggleSelectRow(sender) {
1105         var parent_row = sender.parentNode.parentNode;
1106
1107         if (sender.checked) {
1108                 if (!parent_row.className.match("Selected")) {
1109                         parent_row.className = parent_row.className + "Selected";
1110                 }
1111         } else {
1112                 if (parent_row.className.match("Selected")) {
1113                         parent_row.className = parent_row.className.replace("Selected", "");
1114                 }
1115         }
1116 }
1117
1118 function openExternalUrl(url) {
1119         var w = window.open(url);
1120 }
1121
1122 function getRelativeFeedId(list, id, direction, unread_only) {
1123         if (!id) {
1124                 if (direction == "next") {
1125                         for (i = 0; i < list.childNodes.length; i++) {
1126                                 var child = list.childNodes[i];
1127                                 if (child.id && child.id == "feedCatHolder") {
1128                                         if (child.lastChild) {
1129                                                 var cr = getRelativeFeedId(child.firstChild, id, direction, unread_only);
1130                                                 if (cr) return cr;
1131                                         }
1132                                 } else if (child.id && child.id.match("FEEDR-")) {
1133                                         return child.id.replace('FEEDR-', '');
1134                                 }
1135                         }
1136                 }
1137
1138                 // FIXME select last feed doesn't work when only unread feeds are visible
1139
1140                 if (direction == "prev") {
1141                         for (i = list.childNodes.length-1; i >= 0; i--) {
1142                                 var child = list.childNodes[i];
1143                                 if (child.id == "feedCatHolder") {
1144                                         if (child.firstChild) {
1145                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
1146                                                 if (cr) return cr;
1147                                         }
1148                                 } else if (child.id.match("FEEDR-")) {
1149
1150                                         if (getInitParam("hide_read_feeds") == 1) {
1151                                                 if (child.className != "feed") {
1152                                                         alert(child.className);
1153                                                         return child.id.replace('FEEDR-', '');
1154                                                 }
1155                                         } else {
1156                                                         return child.id.replace('FEEDR-', '');
1157                                         }
1158                                 }
1159                         }
1160                 }
1161         } else {
1162
1163                 var feed = list.ownerDocument.getElementById("FEEDR-" + id);
1164
1165                 if (getInitParam("hide_read_feeds") == 1) {
1166                         unread_only = true;
1167                 }
1168
1169                 if (direction == "next") {
1170
1171                         var e = feed;
1172
1173                         while (e) {
1174
1175                                 if (e.nextSibling) {
1176
1177                                         e = e.nextSibling;
1178
1179                                 } else if (e.parentNode.parentNode.nextSibling) {
1180
1181                                         var this_cat = e.parentNode.parentNode;
1182
1183                                         e = false;
1184
1185                                         if (this_cat && this_cat.nextSibling) {
1186                                                 while (!e && this_cat.nextSibling) {
1187                                                         this_cat = this_cat.nextSibling;
1188                                                         if (this_cat.id == "feedCatHolder") {
1189                                                                 e = this_cat.firstChild.firstChild;
1190                                                         }
1191                                                 }
1192                                         }
1193
1194                                 } else {
1195                                         e = false;
1196                            }
1197
1198                                 if (e) {
1199                                         if (!unread_only || (unread_only && e.className != "feed" &&
1200                                                         e.className.match("feed")))     {
1201                                                 return e.id.replace("FEEDR-", "");
1202                                         }
1203                                 }
1204                         }
1205
1206                 } else if (direction == "prev") {
1207
1208                         var e = feed;
1209
1210                         while (e) {
1211
1212                                 if (e.previousSibling) {
1213
1214                                         e = e.previousSibling;
1215
1216                                 } else if (e.parentNode.parentNode.previousSibling) {
1217
1218                                         var this_cat = e.parentNode.parentNode;
1219
1220                                         e = false;
1221
1222                                         if (this_cat && this_cat.previousSibling) {
1223                                                 while (!e && this_cat.previousSibling) {
1224                                                         this_cat = this_cat.previousSibling;
1225                                                         if (this_cat.id == "feedCatHolder") {
1226                                                                 e = this_cat.firstChild.lastChild;
1227                                                         }
1228                                                 }
1229                                         }
1230
1231                                 } else {
1232                                         e = false;
1233                            }
1234
1235                                 if (e) {
1236                                         if (!unread_only || (unread_only && e.className != "feed" &&
1237                                                         e.className.match("feed")))     {
1238                                                 return e.id.replace("FEEDR-", "");
1239                                         }
1240                                 }
1241                         }
1242                 }
1243         }
1244 }
1245
1246 function showBlockElement(id) {
1247         var elem = document.getElementById(id);
1248
1249         if (elem) {
1250                 elem.style.display = "block";
1251         } else {
1252                 alert("[showBlockElement] can't find element with id " + id);
1253         }
1254 }
1255
1256 function hideParentElement(e) {
1257         e.parentNode.style.display = "none";
1258 }
1259
1260 function dropboxSelect(e, v) {
1261         for (i = 0; i < e.length; i++) {
1262                 if (e[i].value == v) {
1263                         e.selectedIndex = i;
1264                         break;
1265                 }
1266         }
1267 }
1268
1269 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1270 // bugfixed just a little bit :-)
1271 function getURLParam(strParamName){
1272   var strReturn = "";
1273   var strHref = window.location.href;
1274
1275   if (strHref.indexOf("#") == strHref.length-1) {
1276                 strHref = strHref.substring(0, strHref.length-1);
1277   }
1278
1279   if ( strHref.indexOf("?") > -1 ){
1280     var strQueryString = strHref.substr(strHref.indexOf("?"));
1281     var aQueryString = strQueryString.split("&");
1282     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1283       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1284         var aParam = aQueryString[iParam].split("=");
1285         strReturn = aParam[1];
1286         break;
1287       }
1288     }
1289   }
1290   return strReturn;
1291 }
1292
1293 function leading_zero(p) {
1294         var s = String(p);
1295         if (s.length == 1) s = "0" + s;
1296         return s;
1297 }
1298
1299 function closeInfoBox(cleanup) {
1300         var box = document.getElementById('infoBox');
1301         var shadow = document.getElementById('infoBoxShadow');
1302
1303         if (shadow) {
1304                 shadow.style.display = "none";
1305         } else if (box) {
1306                 box.style.display = "none";
1307         }
1308
1309         if (cleanup) box.innerHTML = "&nbsp;";
1310
1311         enableHotkeys();
1312
1313         return false;
1314 }
1315
1316
1317 function displayDlg(id, param) {
1318
1319         if (!xmlhttp_ready(xmlhttp)) {
1320                 printLockingError();
1321                 return
1322         }
1323
1324         notify("");
1325
1326         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1327                 param_escape(id) + "&param=" + param_escape(param), true);
1328         xmlhttp.onreadystatechange=infobox_callback;
1329         xmlhttp.send(null);
1330
1331         disableHotkeys();
1332
1333         return false;
1334 }
1335
1336 function infobox_submit_callback() {
1337         if (xmlhttp.readyState == 4) {
1338                 closeInfoBox();
1339
1340                 try {
1341                         // called from prefs, reload tab
1342                         if (active_tab) {
1343                                 selectTab(active_tab, false);
1344                         }
1345                 } catch (e) { }
1346
1347                 notify(xmlhttp.responseText);
1348
1349         }
1350 }
1351
1352 function infobox_callback() {
1353         if (xmlhttp.readyState == 4) {
1354                 var box = document.getElementById('infoBox');
1355                 var shadow = document.getElementById('infoBoxShadow');
1356                 if (box) {
1357                         box.innerHTML=xmlhttp.responseText;
1358                         if (shadow) {
1359                                 shadow.style.display = "block";
1360                         } else {
1361                                 box.style.display = "block";
1362                         }
1363                 }
1364                 notify("");
1365         }
1366 }
1367
1368 function qaddFilter() {
1369
1370         if (!xmlhttp_ready(xmlhttp)) {
1371                 printLockingError();
1372                 return
1373         }
1374
1375         var form = document.forms['filter_add_form'];
1376         var reg_exp = form.reg_exp.value;
1377
1378         if (reg_exp == "") {
1379                 alert("Can't add filter: nothing to match on.");
1380                 return false;
1381         }
1382
1383         var query = Form.serialize("filter_add_form");
1384
1385         xmlhttp.open("GET", "backend.php?" + query, true);
1386         xmlhttp.onreadystatechange=infobox_submit_callback;
1387         xmlhttp.send(null);
1388
1389         return true;
1390 }
1391
1392 function toggleSubmitNotEmpty(e, submit_id) {
1393         try {
1394                 document.getElementById(submit_id).disabled = (e.value == "")
1395         } catch (e) {
1396                 exception_error("toggleSubmitNotEmpty", e);
1397         }
1398 }
1399
1400 function isValidURL(s) {
1401         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1402 }
1403
1404 function qafAdd() {
1405
1406         if (!xmlhttp_ready(xmlhttp)) {
1407                 printLockingError();
1408                 return
1409         }
1410
1411         var form = document.forms['feed_add_form'];
1412         var feed_url = form.feed_url.value;
1413
1414         if (feed_url == "") {
1415                 alert("Can't subscribe: no feed URL given.");
1416                 return false;
1417         }
1418
1419         notify("Adding feed...", true);
1420
1421         closeInfoBox();
1422
1423         var feeds_doc = document;
1424
1425 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1426
1427         var query = Form.serialize("feed_add_form");
1428
1429         xmlhttp.open("GET", "backend.php?" + query, true);
1430         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1431         xmlhttp.send(null);
1432
1433         return false;
1434 }
1435
1436 function filterCR(e, f)
1437 {
1438      var key;
1439
1440      if(window.event)
1441           key = window.event.keyCode;     //IE
1442      else
1443           key = e.which;     //firefox
1444
1445         if (key == 13) {
1446                 if (typeof f != 'undefined') {
1447                         f();
1448                         return false;
1449                 } else {
1450                         return false;
1451                 }
1452         } else {
1453                 return true;
1454         }
1455 }
1456
1457 function getMainContext() {
1458         return this.window;
1459 }
1460
1461 function getFeedsContext() {
1462         return this.window;
1463 }
1464
1465 function getContentContext() {
1466         return this.window;
1467 }
1468
1469 function getHeadlinesContext() {
1470         return this.window;
1471 }
1472
1473 var debug_last_class = "even";
1474
1475 function debug(msg) {
1476
1477         if (debug_last_class == "even") {
1478                 debug_last_class = "odd";
1479         } else {
1480                 debug_last_class = "even";
1481         }
1482
1483         var c = document.getElementById('debug_output');
1484         if (c && c.style.display == "block") {
1485                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1486                         c.removeChild(c.lastChild);
1487                 }
1488
1489                 var d = new Date();
1490                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1491                         ":" + leading_zero(d.getSeconds());
1492                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1493                         msg + "</li>" + c.innerHTML;
1494         }
1495 }
1496
1497 function getInitParam(key) {
1498         return getMainContext().init_params[key];
1499 }
1500
1501 function storeInitParam(key, value, is_client) {
1502         try {
1503                 if (!is_client) {
1504                         if (getMainContext().init_params[key] != value) {
1505                                 debug("storeInitParam: " + key + " => " + value);
1506                                 //new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1507                                 //      param_escape(key) + "&value=" + param_escape(value));
1508                                 var f = getMainContext().document.getElementById("backReqBox");
1509                                 f.src = "backend.php?op=rpc&subop=storeParam&key=" +
1510                                         param_escape(key) + "&value=" + param_escape(value);
1511                         }
1512                 }
1513                 getMainContext().init_params[key] = value;
1514         } catch (e) {
1515                 exception_error("storeInitParam", e);
1516         }
1517 }
1518
1519 /*
1520 function storeInitParams(params, is_client) {
1521         try {
1522                 var s = "";
1523
1524                 for (k in params) {
1525                         if (getMainContext().init_params[k] != params[k]) {
1526                                 s += k + "=" + params[k] + ";";
1527                                 getMainContext().init_params[k] = params[k];
1528                         }
1529                 }
1530
1531                 debug("storeInitParams: " + s);
1532
1533                 if (!is_client) {
1534                         new Ajax.Request("backend.php?op=rpc&subop=storeParams&str=" + s);
1535                 }
1536         } catch (e) {
1537                 exception_error("storeInitParams", e);
1538         }
1539 }*/
1540
1541 function fatalError(code, message) {
1542         try {
1543
1544                 if (code == 6) {
1545                         window.location.href = "tt-rss.php";
1546                 } else if (code == 5) {
1547                         window.location.href = "update.php";
1548                 } else {
1549                         var fe = document.getElementById("fatal_error");
1550                         var fc = document.getElementById("fatal_error_msg");
1551
1552                         fc.innerHTML = "Code " + code + ": " + message;
1553
1554                         fe.style.display = "block";
1555                 }
1556
1557         } catch (e) {
1558                 exception_error("fatalError", e);
1559         }
1560 }
1561
1562 function getFeedName(id, is_cat) {
1563         var d = getFeedsContext().document;
1564
1565         var e;
1566
1567         if (is_cat) {
1568                 e = d.getElementById("FCATN-" + id);
1569         } else {
1570                 e = d.getElementById("FEEDN-" + id);
1571         }
1572         if (e) {
1573                 return e.innerHTML.stripTags();
1574         } else {
1575                 return null;
1576         }
1577 }
1578
1579 function viewContentUrl(url) {
1580         getContentContext().location = url;
1581 }
1582
1583 function filterDlgCheckAction(sender) {
1584
1585         try {
1586
1587                 var action = sender[sender.selectedIndex].value;
1588
1589                 var form = document.forms["filter_add_form"];
1590
1591                 if (!form) {
1592                         form = document.forms["filter_edit_form"];
1593                 }
1594
1595                 if (!form) {
1596                         debug("filterDlgCheckAction: can't find form!");
1597                         return;
1598                 }
1599
1600                 var action_param = form.action_param;
1601
1602                 if (!action_param) {
1603                         debug("filterDlgCheckAction: can't find action param!");
1604                         return;
1605                 }
1606
1607                 // if selected action supports parameters, enable params field
1608                 if (action == 4) {
1609                         action_param.disabled = false;
1610                 } else {
1611                         action_param.disabled = true;
1612                 }
1613
1614         } catch (e) {
1615                 exception_error(e, "filterDlgCheckAction");
1616         }
1617
1618 }
1619
1620 function explainError(code) {
1621         return displayDlg("explainError", code);
1622 }
1623
1624 function logoutUser() {
1625         try {
1626                 if (xmlhttp_ready(xmlhttp_rpc)) {
1627
1628                         notify("Logging out, please wait...");
1629
1630                         xmlhttp_rpc.open("GET", "backend.php?op=rpc&subop=logout", true);
1631                         xmlhttp_rpc.onreadystatechange=logout_callback;
1632                         xmlhttp_rpc.send(null);
1633                 } else {
1634                         printLockingError();
1635                 }
1636         } catch (e) {
1637                 exception_error("logoutUser", e);
1638         }
1639 }