functions.js

   1 var hotkeys_enabled = true;
   2 var debug_mode_enabled = false;
   3 var xmlhttp_rpc = Ajax.getTransport();
   4
   5 /* add method to remove element from array */
   6
   7 Array.prototype.remove = function(s) {
   8         for (var i=0; i < this.length; i++) {
   9                 if (s == this[i]) this.splice(i, 1);
  10         }
  11 }
  12
  13 function browser_has_opacity() {
  14         return navigator.userAgent.match("Gecko") != null ||
  15                 navigator.userAgent.match("Opera") != null;
  16 }
  17
  18 function is_msie() {
  19         return navigator.userAgent.match("MSIE");
  20 }
  21
  22 function is_opera() {
  23         return navigator.userAgent.match("Opera");
  24 }
  25
  26 function is_khtml() {
  27         return navigator.userAgent.match("KHTML");
  28 }
  29
  30 function is_safari() {
  31         return navigator.userAgent.match("Safari");
  32 }
  33
  34 function exception_error(location, e, silent) {
  35         var msg;
  36
  37         if (e.fileName) {
  38                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  39
  40                 msg = "Exception: " + e.name + ", " + e.message +
  41                         "\nFunction: " + location + "()" +
  42                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  43
  44         } else {
  45                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  46         }
  47
  48         debug("<b>EXCEPTION: " + msg + "</b>");
  49
  50         if (!silent) {
  51                 alert(msg);
  52         }
  53 }
  54
  55 function disableHotkeys() {
  56         hotkeys_enabled = false;
  57 }
  58
  59 function enableHotkeys() {
  60         hotkeys_enabled = true;
  61 }
  62
  63 function xmlhttp_ready(obj) {
  64         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  65 }
  66
  67 function open_article_callback() {
  68         if (xmlhttp_rpc.readyState == 4) {
  69                 try {
  70
  71                         if (xmlhttp_rpc.responseXML) {
  72                                 var link = xmlhttp_rpc.responseXML.getElementsByTagName("link")[0];
  73
  74                                 if (link) {
  75                                         window.open(link.firstChild.nodeValue, "_blank");
  76                                 }
  77                         }
  78
  79                 } catch (e) {
  80                         exception_error("open_article_callback", e);
  81                 }
  82         }
  83 }
  84
  85 function logout_callback() {
  86         var container = document.getElementById('notify');
  87         if (xmlhttp.readyState == 4) {
  88                 try {
  89                         var date = new Date();
  90                         var timestamp = Math.round(date.getTime() / 1000);
  91                         window.location.href = "tt-rss.php";
  92                 } catch (e) {
  93                         exception_error("logout_callback", e);
  94                 }
  95         }
  96 }
  97
  98 function notify_callback() {
  99         var container = document.getElementById('notify');
 100         if (xmlhttp.readyState == 4) {
 101                 container.innerHTML=xmlhttp.responseText;
 102         }
 103 }
 104
 105 function rpc_notify_callback() {
 106         var container = document.getElementById('notify');
 107         if (xmlhttp_rpc.readyState == 4) {
 108                 container.innerHTML=xmlhttp_rpc.responseText;
 109         }
 110 }
 111
 112 function param_escape(arg) {
 113         if (typeof encodeURIComponent != 'undefined')
 114                 return encodeURIComponent(arg);
 115         else
 116                 return escape(arg);
 117 }
 118
 119 function param_unescape(arg) {
 120         if (typeof decodeURIComponent != 'undefined')
 121                 return decodeURIComponent(arg);
 122         else
 123                 return unescape(arg);
 124 }
 125
 126 function delay(gap) {
 127         var then,now;
 128         then=new Date().getTime();
 129         now=then;
 130         while((now-then)<gap) {
 131                 now=new Date().getTime();
 132         }
 133 }
 134
 135 var notify_hide_timerid = false;
 136
 137 function hide_notify() {
 138         var n = document.getElementById("notify");
 139         if (n) {
 140                 n.style.display = "none";
 141         }
 142 }
 143
 144 function notify_real(msg, no_hide, n_type) {
 145
 146         var n = document.getElementById("notify");
 147         var nb = document.getElementById("notify_body");
 148
 149         if (!n || !nb) return;
 150
 151         if (notify_hide_timerid) {
 152                 window.clearTimeout(notify_hide_timerid);
 153         }
 154
 155         if (msg == "") {
 156                 if (n.style.display == "block") {
 157                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 158                 }
 159                 return;
 160         } else {
 161                 n.style.display = "block";
 162         }
 163
 164         /* types:
 165
 166                 1 - generic
 167                 2 - progress
 168                 3 - error
 169                 4 - info
 170
 171         */
 172
 173         if (typeof __ != 'undefined') {
 174                 msg = __(msg);
 175         }
 176
 177         if (n_type == 1) {
 178                 n.className = "notify";
 179         } else if (n_type == 2) {
 180                 n.className = "notifyProgress";
 181                 msg = "<img src='images/indicator_white.gif'> " + msg;
 182         } else if (n_type == 3) {
 183                 n.className = "notifyError";
 184                 msg = "<img src='images/sign_excl.png'> " + msg;
 185         } else if (n_type == 4) {
 186                 n.className = "notifyInfo";
 187                 msg = "<img src='images/sign_info.png'> " + msg;
 188         }
 189
 190 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 191
 192         nb.innerHTML = msg;
 193
 194         if (!no_hide) {
 195                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 196         }
 197 }
 198
 199 function notify(msg, no_hide) {
 200         notify_real(msg, no_hide, 1);
 201 }
 202
 203 function notify_progress(msg, no_hide) {
 204         notify_real(msg, no_hide, 2);
 205 }
 206
 207 function notify_error(msg, no_hide) {
 208         notify_real(msg, no_hide, 3);
 209
 210 }
 211
 212 function notify_info(msg, no_hide) {
 213         notify_real(msg, no_hide, 4);
 214 }
 215
 216 function printLockingError() {
 217         notify_info("Please wait until operation finishes.");
 218 }
 219
 220 function hotkey_handler(e) {
 221
 222         try {
 223
 224                 var keycode;
 225                 var shift_key = false;
 226
 227                 try {
 228                         shift_key = e.shiftKey;
 229                 } catch (e) {
 230
 231                 }
 232
 233                 if (!hotkeys_enabled) return;
 234
 235                 if (window.event) {
 236                         keycode = window.event.keyCode;
 237                 } else if (e) {
 238                         keycode = e.which;
 239                 }
 240
 241                 if (keycode == 82) { // r
 242                         return scheduleFeedUpdate(true);
 243                 }
 244
 245                 if (keycode == 83) { // s
 246                         return displayDlg("search", getActiveFeedId());
 247                 }
 248
 249                 if (keycode == 85) { // u
 250                         if (getActiveFeedId()) {
 251                                 return viewfeed(getActiveFeedId(), "ForceUpdate");
 252                         }
 253                 }
 254
 255                 if (keycode == 65) { // a
 256                         return toggleDispRead();
 257                 }
 258
 259                 var feedlist = document.getElementById('feedList');
 260
 261                 if (keycode == 74) { // j
 262                         var feed = getActiveFeedId();
 263                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 264                         if (new_feed) viewfeed(new_feed, '');
 265                 }
 266
 267                 if (keycode == 75) { // k
 268                         var feed = getActiveFeedId();
 269                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 270                         if (new_feed) viewfeed(new_feed, '');
 271                 }
 272
 273                 if (keycode == 78 || keycode == 40) { // n, down
 274                         if (typeof moveToPost != 'undefined') {
 275                                 return moveToPost('next');
 276                         }
 277                 }
 278
 279                 if (keycode == 80 || keycode == 38) { // p, up
 280                         if (typeof moveToPost != 'undefined') {
 281                                 return moveToPost('prev');
 282                         }
 283                 }
 284
 285                 if (keycode == 68 && shift_key) { // d
 286                         if (!debug_mode_enabled) {
 287                                 document.getElementById('debug_output').style.display = 'block';
 288                                 debug('debug mode activated');
 289                         } else {
 290                                 document.getElementById('debug_output').style.display = 'none';
 291                         }
 292
 293                         debug_mode_enabled = !debug_mode_enabled;
 294                 }
 295
 296                 if (keycode == 190 && shift_key) { // >
 297                         viewFeedGoPage(1);
 298                 }
 299
 300                 if (keycode == 188 && shift_key) { // <
 301                         viewFeedGoPage(-1);
 302                 }
 303
 304                 if (keycode == 191 && shift_key) { // ?
 305                         viewFeedGoPage(0);
 306                 }
 307
 308                 if (keycode == 69 && shift_key) { // e
 309                         return editFeedDlg(getActiveFeedId());
 310                 }
 311
 312                 if (keycode == 70 && shift_key) { // f
 313                         if (getActiveFeedId()) {
 314                                 return catchupCurrentFeed();
 315                         }
 316                 }
 317
 318                 if (keycode == 80 && shift_key) { // p
 319                         if (getActiveFeedId()) {
 320                                 return catchupPage();
 321                         }
 322                 }
 323
 324                 if (keycode == 86) { // v
 325                         if (getActiveArticleId()) {
 326                                 openArticleInNewWindow(getActiveArticleId());
 327                         }
 328                 }
 329
 330                 if (typeof localHotkeyHandler != 'undefined') {
 331                         try {
 332                                 return localHotkeyHandler(e);
 333                         } catch (e) {
 334                                 exception_error("hotkey_handler, local:", e);
 335                         }
 336                 }
 337
 338                 debug("KP=" + keycode);
 339         } catch (e) {
 340                 exception_error("hotkey_handler", e);
 341         }
 342 }
 343
 344 function cleanSelectedList(element) {
 345         var content = document.getElementById(element);
 346
 347         if (!document.getElementById("feedCatHolder")) {
 348                 for (i = 0; i < content.childNodes.length; i++) {
 349                         var child = content.childNodes[i];
 350                         try {
 351                                 child.className = child.className.replace("Selected", "");
 352                         } catch (e) {
 353                                 //
 354                         }
 355                 }
 356         } else {
 357                 for (i = 0; i < content.childNodes.length; i++) {
 358                         var child = content.childNodes[i];
 359                         if (child.id == "feedCatHolder") {
 360                                 debug(child.id);
 361                                 var fcat = child.lastChild;
 362                                 for (j = 0; j < fcat.childNodes.length; j++) {
 363                                         var feed = fcat.childNodes[j];
 364                                         feed.className = feed.className.replace("Selected", "");
 365                                 }
 366                         }
 367                 }
 368         }
 369 }
 370
 371
 372 function cleanSelected(element) {
 373         var content = document.getElementById(element);
 374
 375         for (i = 0; i < content.rows.length; i++) {
 376                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 377         }
 378 }
 379
 380 function getVisibleUnreadHeadlines() {
 381         var content = document.getElementById("headlinesList");
 382
 383         var rows = new Array();
 384
 385         for (i = 0; i < content.rows.length; i++) {
 386                 var row_id = content.rows[i].id.replace("RROW-", "");
 387                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 388                                 rows.push(row_id);
 389                 }
 390         }
 391         return rows;
 392 }
 393
 394 function getVisibleHeadlineIds() {
 395
 396         var content = document.getElementById("headlinesList");
 397
 398         var rows = new Array();
 399
 400         for (i = 0; i < content.rows.length; i++) {
 401                 var row_id = content.rows[i].id.replace("RROW-", "");
 402                 if (row_id.length > 0) {
 403                                 rows.push(row_id);
 404                 }
 405         }
 406         return rows;
 407 }
 408
 409 function getFirstVisibleHeadlineId() {
 410         var rows = getVisibleHeadlineIds();
 411         return rows[0];
 412 }
 413
 414 function getLastVisibleHeadlineId() {
 415         var rows = getVisibleHeadlineIds();
 416         return rows[rows.length-1];
 417 }
 418
 419 function markHeadline(id) {
 420         var row = document.getElementById("RROW-" + id);
 421         if (row) {
 422                 var is_active = false;
 423
 424                 if (row.className.match("Active")) {
 425                         is_active = true;
 426                 }
 427                 row.className = row.className.replace("Selected", "");
 428                 row.className = row.className.replace("Active", "");
 429                 row.className = row.className.replace("Insensitive", "");
 430
 431                 if (is_active) {
 432                         row.className = row.className = "Active";
 433                 }
 434
 435                 var check = document.getElementById("RCHK-" + id);
 436
 437                 if (check) {
 438                         check.checked = true;
 439                 }
 440
 441                 row.className = row.className + "Selected";
 442
 443         }
 444 }
 445
 446 function getFeedIds() {
 447         var content = document.getElementById("feedsList");
 448
 449         var rows = new Array();
 450
 451         for (i = 0; i < content.rows.length; i++) {
 452                 var id = content.rows[i].id.replace("FEEDR-", "");
 453                 if (id.length > 0) {
 454                         rows.push(id);
 455                 }
 456         }
 457
 458         return rows;
 459 }
 460
 461 function setCookie(name, value, lifetime, path, domain, secure) {
 462
 463         var d = false;
 464
 465         if (lifetime) {
 466                 d = new Date();
 467                 d.setTime(d.getTime() + (lifetime * 1000));
 468         }
 469
 470         debug("setCookie: " + name + " => " + value + ": " + d);
 471
 472         int_setCookie(name, value, d, path, domain, secure);
 473
 474 }
 475
 476 function int_setCookie(name, value, expires, path, domain, secure) {
 477         document.cookie= name + "=" + escape(value) +
 478                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 479                 ((path) ? "; path=" + path : "") +
 480                 ((domain) ? "; domain=" + domain : "") +
 481                 ((secure) ? "; secure" : "");
 482 }
 483
 484 function delCookie(name, path, domain) {
 485         if (getCookie(name)) {
 486                 document.cookie = name + "=" +
 487                 ((path) ? ";path=" + path : "") +
 488                 ((domain) ? ";domain=" + domain : "" ) +
 489                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 490         }
 491 }
 492
 493
 494 function getCookie(name) {
 495
 496         var dc = document.cookie;
 497         var prefix = name + "=";
 498         var begin = dc.indexOf("; " + prefix);
 499         if (begin == -1) {
 500             begin = dc.indexOf(prefix);
 501             if (begin != 0) return null;
 502         }
 503         else {
 504             begin += 2;
 505         }
 506         var end = document.cookie.indexOf(";", begin);
 507         if (end == -1) {
 508             end = dc.length;
 509         }
 510         return unescape(dc.substring(begin + prefix.length, end));
 511 }
 512
 513 function disableContainerChildren(id, disable, doc) {
 514
 515         if (!doc) doc = document;
 516
 517         var container = doc.getElementById(id);
 518
 519         if (!container) {
 520                 //alert("disableContainerChildren: element " + id + " not found");
 521                 return;
 522         }
 523
 524         for (var i = 0; i < container.childNodes.length; i++) {
 525                 var child = container.childNodes[i];
 526
 527                 try {
 528                         child.disabled = disable;
 529                 } catch (E) {
 530
 531                 }
 532
 533                 if (disable) {
 534                         if (child.className && child.className.match("button")) {
 535                                 child.className = "disabledButton";
 536                         }
 537                 } else {
 538                         if (child.className && child.className.match("disabledButton")) {
 539                                 child.className = "button";
 540                         }
 541                 }
 542         }
 543
 544 }
 545
 546 function gotoPreferences() {
 547         document.location.href = "prefs.php";
 548 }
 549
 550 function gotoMain() {
 551         document.location.href = "tt-rss.php";
 552 }
 553
 554 function gotoExportOpml() {
 555         document.location.href = "opml.php?op=Export";
 556 }
 557
 558 function getActiveFeedId() {
 559 //      return getCookie("ttrss_vf_actfeed");
 560         try {
 561                 debug("gAFID: " + active_feed_id);
 562                 return active_feed_id;
 563         } catch (e) {
 564                 exception_error("getActiveFeedId", e);
 565         }
 566 }
 567
 568 function activeFeedIsCat() {
 569         return active_feed_is_cat;
 570 }
 571
 572 function setActiveFeedId(id) {
 573 //      return setCookie("ttrss_vf_actfeed", id);
 574         try {
 575                 debug("sAFID(" + id + ")");
 576                 active_feed_id = id;
 577         } catch (e) {
 578                 exception_error("setActiveFeedId", e);
 579         }
 580 }
 581
 582 function parse_counters(reply, scheduled_call) {
 583         try {
 584
 585                 var feeds_found = 0;
 586
 587                 if (reply.firstChild && reply.firstChild.firstChild) {
 588                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 589                         reply = reply.firstChild;
 590                 }
 591
 592                 for (var l = 0; l < reply.childNodes.length; l++) {
 593                         if (!reply.childNodes[l] ||
 594                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 595                                 // where did this come from?
 596                                 continue;
 597                         }
 598
 599                         var id = reply.childNodes[l].getAttribute("id");
 600                         var t = reply.childNodes[l].getAttribute("type");
 601                         var ctr = reply.childNodes[l].getAttribute("counter");
 602                         var error = reply.childNodes[l].getAttribute("error");
 603                         var has_img = reply.childNodes[l].getAttribute("hi");
 604                         var updated = reply.childNodes[l].getAttribute("updated");
 605
 606                         if (id == "global-unread") {
 607                                 global_unread = ctr;
 608                                 updateTitle();
 609                                 continue;
 610                         }
 611
 612                         if (id == "subscribed-feeds") {
 613                                 feeds_found = ctr;
 614                                 continue;
 615                         }
 616
 617                         if (t == "category") {
 618                                 var catctr = document.getElementById("FCATCTR-" + id);
 619                                 if (catctr) {
 620                                         catctr.innerHTML = "(" + ctr + ")";
 621                                         if (ctr > 0) {
 622                                                 catctr.className = "catCtrHasUnread";
 623                                         } else {
 624                                                 catctr.className = "catCtrNoUnread";
 625                                         }
 626                                 }
 627                                 continue;
 628                         }
 629
 630                         var feedctr = document.getElementById("FEEDCTR-" + id);
 631                         var feedu = document.getElementById("FEEDU-" + id);
 632                         var feedr = document.getElementById("FEEDR-" + id);
 633                         var feed_img = document.getElementById("FIMG-" + id);
 634                         var feedlink = document.getElementById("FEEDL-" + id);
 635                         var feedupd = document.getElementById("FLUPD-" + id);
 636
 637                         if (updated && feedlink) {
 638                                 if (error) {
 639                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 640                                 } else {
 641                                         feedlink.title = "Updated: " + updated;
 642                                 }
 643                         }
 644
 645                         if (updated && feedupd) {
 646                                 if (error) {
 647                                         feedupd.innerHTML = updated + " (Error)";
 648                                 } else {
 649                                         feedupd.innerHTML = updated;
 650                                 }
 651                         }
 652
 653                         if (feedctr && feedu && feedr) {
 654
 655                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 656                                         viewCurrentFeed();
 657                                 }
 658
 659                                 feedu.innerHTML = ctr;
 660
 661                                 if (error) {
 662                                         feedr.className = feedr.className.replace("feed", "error");
 663                                 } else if (id > 0) {
 664                                         feedr.className = feedr.className.replace("error", "feed");
 665                                 }
 666
 667                                 if (ctr > 0) {
 668                                         feedctr.className = "odd";
 669                                         if (!feedr.className.match("Unread")) {
 670                                                 var is_selected = feedr.className.match("Selected");
 671
 672                                                 feedr.className = feedr.className.replace("Selected", "");
 673                                                 feedr.className = feedr.className.replace("Unread", "");
 674
 675                                                 feedr.className = feedr.className + "Unread";
 676
 677                                                 if (is_selected) {
 678                                                         feedr.className = feedr.className + "Selected";
 679                                                 }
 680
 681                                         }
 682                                 } else {
 683                                         feedctr.className = "invisible";
 684                                         feedr.className = feedr.className.replace("Unread", "");
 685                                 }
 686                         }
 687                 }
 688
 689                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 690
 691                 var feeds_stored = number_of_feeds;
 692
 693                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 694
 695                 if (feeds_stored != feeds_found) {
 696                         number_of_feeds = feeds_found;
 697
 698                         if (feeds_stored != 0) {
 699                                 debug("Subscribed feed number changed, refreshing feedlist");
 700                                 setTimeout('updateFeedList(false, false)', 50);
 701                         }
 702                 }
 703
 704         } catch (e) {
 705                 exception_error("parse_counters", e);
 706         }
 707 }
 708
 709 function parse_counters_reply(xmlhttp, scheduled_call) {
 710
 711         if (!xmlhttp.responseXML) {
 712                 notify_error("Backend did not return valid XML", true);
 713                 return;
 714         }
 715
 716         var reply = xmlhttp.responseXML.firstChild;
 717
 718         if (!reply) {
 719                 notify_error("Backend did not return expected XML object", true);
 720                 updateTitle("");
 721                 return;
 722         }
 723
 724         var error_code = false;
 725         var error_msg = false;
 726
 727         if (reply.firstChild) {
 728                 error_code = reply.firstChild.getAttribute("error-code");
 729                 error_msg = reply.firstChild.getAttribute("error-msg");
 730         }
 731
 732         if (!error_code) {
 733                 error_code = reply.getAttribute("error-code");
 734                 error_msg = reply.getAttribute("error-msg");
 735         }
 736
 737         if (error_code && error_code != 0) {
 738                 debug("refetch_callback: got error code " + error_code);
 739                 return fatalError(error_code, error_msg);
 740         }
 741
 742         var counters = reply.firstChild;
 743
 744         parse_counters(counters, scheduled_call);
 745
 746         var runtime_info = counters.nextSibling;
 747
 748         parse_runtime_info(runtime_info);
 749
 750         if (getInitParam("feeds_sort_by_unread") == 1) {
 751                         resort_feedlist();
 752         }
 753
 754         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 755
 756 }
 757
 758 function all_counters_callback() {
 759         if (xmlhttp_rpc.readyState == 4) {
 760                 try {
 761 /*                      if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 762                                 debug("[all_counters_callback] backend did not return valid XML");
 763                                 return;
 764                         }
 765
 766                         debug("in all_counters_callback : " + xmlhttp_rpc.responseXML);
 767
 768                         var reply = xmlhttp_rpc.responseXML.firstChild;
 769
 770                         var counters = reply.firstChild;
 771
 772                         parse_counters(counters);
 773
 774                         var runtime = counters.nextSibling;
 775
 776                         if (runtime) {
 777                                 parse_runtime_info(runtime);
 778                         }
 779
 780                         if (getInitParam("feeds_sort_by_unread") == 1) {
 781                                 resort_feedlist();
 782                         }
 783
 784                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1); */
 785
 786                         debug("in all_counters_callback");
 787
 788                         parse_counters_reply(xmlhttp_rpc);
 789
 790                 } catch (e) {
 791                         exception_error("all_counters_callback", e);
 792                 }
 793         }
 794 }
 795
 796 function get_feed_entry_unread(doc, elem) {
 797
 798         var id = elem.id.replace("FEEDR-", "");
 799
 800         if (id <= 0) {
 801                 return -1;
 802         }
 803
 804         try {
 805                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 806         } catch (e) {
 807                 return -1;
 808         }
 809 }
 810
 811 function resort_category(doc, node) {
 812         debug("resort_category: " + node);
 813
 814         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 815                 for (i = 0; i < node.childNodes.length; i++) {
 816                         if (node.childNodes[i].nodeName != "LI") { continue; }
 817
 818                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 819                                 continue;
 820                         }
 821
 822                         for (j = i+1; j < node.childNodes.length; j++) {
 823                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 824
 825                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 826                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 827
 828                                 if (cur_val > tmp_val) {
 829                                         tempnode_i = node.childNodes[i].cloneNode(true);
 830                                         tempnode_j = node.childNodes[j].cloneNode(true);
 831                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 832                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 833                                 }
 834                         }
 835
 836                 }
 837         }
 838
 839 }
 840
 841 function resort_feedlist() {
 842         debug("resort_feedlist");
 843
 844         var fd = document;
 845
 846         if (fd.getElementById("feedCatHolder")) {
 847
 848                 var feeds = fd.getElementById("feedList");
 849                 var child = feeds.firstChild;
 850
 851                 while (child) {
 852
 853                         if (child.id == "feedCatHolder") {
 854                                 resort_category(fd, child.firstChild);
 855                         }
 856
 857                         child = child.nextSibling;
 858                 }
 859
 860         } else {
 861                 resort_category(fd, fd.getElementById("feedList"));
 862         }
 863 }
 864
 865 function update_all_counters(feed) {
 866         if (xmlhttp_ready(xmlhttp_rpc)) {
 867                 var query = "backend.php?op=rpc&subop=getAllCounters";
 868
 869                 if (feed > 0) {
 870                         query = query + "&aid=" + feed;
 871                 }
 872
 873                 if (tagsAreDisplayed()) {
 874                         query = query + "&omode=lt";
 875                 } else {
 876                         query = query + "&omode=flc";
 877                 }
 878
 879                 debug("update_all_counters QUERY: " + query);
 880
 881                 var date = new Date();
 882                 var timestamp = Math.round(date.getTime() / 1000);
 883                 query = query + "&ts=" + timestamp
 884
 885                 xmlhttp_rpc.open("GET", query, true);
 886                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 887                 xmlhttp_rpc.send(null);
 888         }
 889 }
 890
 891 function popupHelp(tid) {
 892         var w = window.open("backend.php?op=help&tid=" + tid,
 893                 "Popup Help",
 894                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 895 }
 896
 897 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 898   * * @author Sundar Dorai-Raj
 899   * * Email: sdoraira@vt.edu
 900   * * This program is free software; you can redistribute it and/or
 901   * * modify it under the terms of the GNU General Public License
 902   * * as published by the Free Software Foundation; either version 2
 903   * * of the License, or (at your option) any later version,
 904   * * provided that any use properly credits the author.
 905   * * This program is distributed in the hope that it will be useful,
 906   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 907   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 908   * * GNU General Public License for more details at http://www.gnu.org * * */
 909
 910   var numbers=".0123456789";
 911   function isNumeric(x) {
 912     // is x a String or a character?
 913     if(x.length>1) {
 914       // remove negative sign
 915       x=Math.abs(x)+"";
 916       for(j=0;j<x.length;j++) {
 917         // call isNumeric recursively for each character
 918         number=isNumeric(x.substring(j,j+1));
 919         if(!number) return number;
 920       }
 921       return number;
 922     }
 923     else {
 924       // if x is number return true
 925       if(numbers.indexOf(x)>=0) return true;
 926       return false;
 927     }
 928   }
 929
 930
 931 function hideOrShowFeeds(doc, hide) {
 932
 933         debug("hideOrShowFeeds: " + doc + ", " + hide);
 934
 935         var fd = document;
 936
 937         var list = fd.getElementById("feedList");
 938
 939         if (fd.getElementById("feedCatHolder")) {
 940
 941                 var feeds = fd.getElementById("feedList");
 942                 var child = feeds.firstChild;
 943
 944                 while (child) {
 945
 946                         if (child.id == "feedCatHolder") {
 947                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 948                         }
 949
 950                         child = child.nextSibling;
 951                 }
 952
 953         } else {
 954                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 955         }
 956 }
 957
 958 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 959
 960 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 961
 962         var cat_unread = 0;
 963
 964         if (!node) {
 965                 debug("hideOrShowFeeds: passed node is null, aborting");
 966                 return;
 967         }
 968
 969         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 970                 for (i = 0; i < node.childNodes.length; i++) {
 971                         if (node.childNodes[i].nodeName != "LI") { continue; }
 972
 973                         if (node.childNodes[i].style != undefined) {
 974
 975                                 var has_unread = (node.childNodes[i].className != "feed" &&
 976                                         node.childNodes[i].className != "tag");
 977
 978         //                      debug(node.childNodes[i].id + " --> " + has_unread);
 979
 980                                 if (hide && !has_unread) {
 981                                         node.childNodes[i].style.display = "none";
 982                                 }
 983
 984                                 if (!hide) {
 985                                         node.childNodes[i].style.display = "list-item";
 986                                 }
 987
 988                                 if (has_unread) {
 989                                         node.childNodes[i].style.display = "list-item";
 990                                         cat_unread++;
 991                                 }
 992                         }
 993                 }
 994         }
 995
 996         if (cat_unread == 0) {
 997                 if (cat_node.style == undefined) {
 998                         debug("ERROR: supplied cat_node " + cat_node +
 999                                 " has no styles. WTF?");
1000                         return;
1001                 }
1002                 if (hide) {
1003                         cat_node.style.display = "none";
1004                 } else {
1005                         cat_node.style.display = "list-item";
1006                 }
1007         } else {
1008                 try {
1009                         cat_node.style.display = "list-item";
1010                 } catch (e) {
1011                         debug(e);
1012                 }
1013         }
1014
1015 //      debug("unread for category: " + cat_unread);
1016 }
1017
1018 function selectTableRow(r, do_select) {
1019         r.className = r.className.replace("Selected", "");
1020
1021         if (do_select) {
1022                 r.className = r.className + "Selected";
1023         }
1024 }
1025
1026 function selectTableRowById(elem_id, check_id, do_select) {
1027
1028         try {
1029
1030                 var row = document.getElementById(elem_id);
1031
1032                 if (row) {
1033                         selectTableRow(row, do_select);
1034                 }
1035
1036                 var check = document.getElementById(check_id);
1037
1038                 if (check) {
1039                         check.checked = do_select;
1040                 }
1041         } catch (e) {
1042                 exception_error("selectTableRowById", e);
1043         }
1044 }
1045
1046 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
1047         classcheck, reset_others) {
1048
1049         var content = document.getElementById(content_id);
1050
1051         if (!content) {
1052                 alert("[selectTableRows] Element " + content_id + " not found.");
1053                 return;
1054         }
1055
1056         for (i = 0; i < content.rows.length; i++) {
1057                 if (!classcheck || content.rows[i].className.match(classcheck)) {
1058
1059                         if (content.rows[i].id.match(prefix)) {
1060                                 selectTableRow(content.rows[i], do_select);
1061
1062                                 var row_id = content.rows[i].id.replace(prefix, "");
1063                                 var check = document.getElementById(check_prefix + row_id);
1064
1065                                 if (check) {
1066                                         check.checked = do_select;
1067                                 }
1068                         } else if (reset_others) {
1069                                 selectTableRow(content.rows[i], false);
1070
1071                                 var row_id = content.rows[i].id.replace(prefix, "");
1072                                 var check = document.getElementById(check_prefix + row_id);
1073
1074                                 if (check) {
1075                                         check.checked = false;
1076                                 }
1077
1078                         }
1079                 } else if (reset_others) {
1080                         selectTableRow(content.rows[i], false);
1081
1082                         var row_id = content.rows[i].id.replace(prefix, "");
1083                         var check = document.getElementById(check_prefix + row_id);
1084
1085                         if (check) {
1086                                 check.checked = false;
1087                         }
1088
1089                 }
1090         }
1091 }
1092
1093 function getSelectedTableRowIds(content_id, prefix) {
1094
1095         var content = document.getElementById(content_id);
1096
1097         if (!content) {
1098                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
1099                 return;
1100         }
1101
1102         var sel_rows = new Array();
1103
1104         for (i = 0; i < content.rows.length; i++) {
1105                 if (content.rows[i].id.match(prefix) &&
1106                                 content.rows[i].className.match("Selected")) {
1107
1108                         var row_id = content.rows[i].id.replace(prefix + "-", "");
1109                         sel_rows.push(row_id);
1110                 }
1111         }
1112
1113         return sel_rows;
1114
1115 }
1116
1117 function toggleSelectRowById(sender, id) {
1118         var row = document.getElementById(id);
1119
1120         if (sender.checked) {
1121                 if (!row.className.match("Selected")) {
1122                         row.className = row.className + "Selected";
1123                 }
1124         } else {
1125                 if (row.className.match("Selected")) {
1126                         row.className = row.className.replace("Selected", "");
1127                 }
1128         }
1129 }
1130
1131 function toggleSelectListRow(sender) {
1132         var parent_row = sender.parentNode;
1133
1134         if (sender.checked) {
1135                 if (!parent_row.className.match("Selected")) {
1136                         parent_row.className = parent_row.className + "Selected";
1137                 }
1138         } else {
1139                 if (parent_row.className.match("Selected")) {
1140                         parent_row.className = parent_row.className.replace("Selected", "");
1141                 }
1142         }
1143 }
1144
1145 function tSR(sender) {
1146         return toggleSelectRow(sender);
1147 }
1148
1149 function toggleSelectRow(sender) {
1150         var parent_row = sender.parentNode.parentNode;
1151
1152         if (sender.checked) {
1153                 if (!parent_row.className.match("Selected")) {
1154                         parent_row.className = parent_row.className + "Selected";
1155                 }
1156         } else {
1157                 if (parent_row.className.match("Selected")) {
1158                         parent_row.className = parent_row.className.replace("Selected", "");
1159                 }
1160         }
1161 }
1162
1163 function openExternalUrl(url) {
1164         var w = window.open(url);
1165 }
1166
1167 function getRelativeFeedId(list, id, direction, unread_only) {
1168         if (!id) {
1169                 if (direction == "next") {
1170                         for (i = 0; i < list.childNodes.length; i++) {
1171                                 var child = list.childNodes[i];
1172                                 if (child.id && child.id == "feedCatHolder") {
1173                                         if (child.lastChild) {
1174                                                 var cr = getRelativeFeedId(child.firstChild, id, direction, unread_only);
1175                                                 if (cr) return cr;
1176                                         }
1177                                 } else if (child.id && child.id.match("FEEDR-")) {
1178                                         return child.id.replace('FEEDR-', '');
1179                                 }
1180                         }
1181                 }
1182
1183                 // FIXME select last feed doesn't work when only unread feeds are visible
1184
1185                 if (direction == "prev") {
1186                         for (i = list.childNodes.length-1; i >= 0; i--) {
1187                                 var child = list.childNodes[i];
1188                                 if (child.id == "feedCatHolder" && child.className != "invisible") {
1189                                         if (child.firstChild) {
1190                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
1191                                                 if (cr) return cr;
1192                                         }
1193                                 } else if (child.id.match("FEEDR-")) {
1194
1195                                         if (getInitParam("hide_read_feeds") == 1) {
1196                                                 if (child.className != "feed") {
1197 //                                                      alert(child.className);
1198                                                         return child.id.replace('FEEDR-', '');
1199                                                 }
1200                                         } else {
1201                                                         return child.id.replace('FEEDR-', '');
1202                                         }
1203                                 }
1204                         }
1205                 }
1206         } else {
1207
1208                 var feed = list.ownerDocument.getElementById("FEEDR-" + id);
1209
1210                 if (getInitParam("hide_read_feeds") == 1) {
1211                         unread_only = true;
1212                 }
1213
1214                 if (direction == "next") {
1215
1216                         var e = feed;
1217
1218                         while (e) {
1219
1220                                 if (e.nextSibling) {
1221
1222                                         e = e.nextSibling;
1223
1224                                 } else if (e.parentNode.parentNode.nextSibling) {
1225
1226                                         var this_cat = e.parentNode.parentNode;
1227
1228                                         e = false;
1229
1230                                         if (this_cat && this_cat.nextSibling) {
1231                                                 while (!e && this_cat.nextSibling) {
1232                                                         this_cat = this_cat.nextSibling;
1233                                                         if (this_cat.id == "feedCatHolder") {
1234                                                                 e = this_cat.firstChild.firstChild;
1235                                                         }
1236                                                 }
1237                                         }
1238
1239                                 } else {
1240                                         e = false;
1241                            }
1242
1243                                 if (e) {
1244                                         if (!unread_only || (unread_only && e.className != "feed" &&
1245                                                         e.className.match("feed")))     {
1246                                                 if (e.parentNode.parentNode && e.parentNode.parentNode.className
1247                                                         != "invisible") {
1248                                                         return e.id.replace("FEEDR-", "");
1249                                                 }
1250                                         }
1251                                 }
1252                         }
1253
1254                 } else if (direction == "prev") {
1255
1256                         var e = feed;
1257
1258                         while (e) {
1259
1260                                 if (e.previousSibling) {
1261
1262                                         e = e.previousSibling;
1263
1264                                 } else if (e.parentNode.parentNode.previousSibling) {
1265
1266                                         var this_cat = e.parentNode.parentNode;
1267
1268                                         e = false;
1269
1270                                         if (this_cat && this_cat.previousSibling) {
1271                                                 while (!e && this_cat.previousSibling) {
1272                                                         this_cat = this_cat.previousSibling;
1273                                                         if (this_cat.id == "feedCatHolder") {
1274                                                                 e = this_cat.firstChild.lastChild;
1275                                                         }
1276                                                 }
1277                                         }
1278
1279                                 } else {
1280                                         e = false;
1281                            }
1282
1283                                 if (e) {
1284                                         if (!unread_only || (unread_only && e.className != "feed" &&
1285                                                         e.className.match("feed")))     {
1286                                                 if (e.parentNode.parentNode && e.parentNode.parentNode.className
1287                                                         != "invisible") {
1288                                                         return e.id.replace("FEEDR-", "");
1289                                                 }
1290                                         }
1291                                 }
1292                         }
1293                 }
1294         }
1295 }
1296
1297 function showBlockElement(id, h_id) {
1298         var elem = document.getElementById(id);
1299
1300         if (elem) {
1301                 elem.style.display = "block";
1302
1303                 if (h_id) {
1304                         elem = document.getElementById(h_id);
1305                         if (elem) {
1306                                 elem.style.display = "none";
1307                         }
1308                 }
1309         } else {
1310                 alert("[showBlockElement] can't find element with id " + id);
1311         }
1312 }
1313
1314 function hideParentElement(e) {
1315         e.parentNode.style.display = "none";
1316 }
1317
1318 function dropboxSelect(e, v) {
1319         for (i = 0; i < e.length; i++) {
1320                 if (e[i].value == v) {
1321                         e.selectedIndex = i;
1322                         break;
1323                 }
1324         }
1325 }
1326
1327 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1328 // bugfixed just a little bit :-)
1329 function getURLParam(strParamName){
1330   var strReturn = "";
1331   var strHref = window.location.href;
1332
1333   if (strHref.indexOf("#") == strHref.length-1) {
1334                 strHref = strHref.substring(0, strHref.length-1);
1335   }
1336
1337   if ( strHref.indexOf("?") > -1 ){
1338     var strQueryString = strHref.substr(strHref.indexOf("?"));
1339     var aQueryString = strQueryString.split("&");
1340     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1341       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1342         var aParam = aQueryString[iParam].split("=");
1343         strReturn = aParam[1];
1344         break;
1345       }
1346     }
1347   }
1348   return strReturn;
1349 }
1350
1351 function leading_zero(p) {
1352         var s = String(p);
1353         if (s.length == 1) s = "0" + s;
1354         return s;
1355 }
1356
1357 function closeInfoBox(cleanup) {
1358
1359         if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1360                 var overlay = document.getElementById("dialog_overlay");
1361                 if (overlay) {
1362                         overlay.style.display = "none";
1363                 }
1364         }
1365
1366         var box = document.getElementById('infoBox');
1367         var shadow = document.getElementById('infoBoxShadow');
1368
1369         if (shadow) {
1370                 shadow.style.display = "none";
1371         } else if (box) {
1372                 box.style.display = "none";
1373         }
1374
1375         if (cleanup) box.innerHTML = "&nbsp;";
1376
1377         enableHotkeys();
1378
1379         return false;
1380 }
1381
1382
1383 function displayDlg(id, param) {
1384
1385         if (!xmlhttp_ready(xmlhttp)) {
1386                 printLockingError();
1387                 return
1388         }
1389
1390         notify_progress("Loading, please wait...", true);
1391
1392         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1393                 param_escape(id) + "&param=" + param_escape(param), true);
1394         xmlhttp.onreadystatechange=infobox_callback;
1395         xmlhttp.send(null);
1396
1397         disableHotkeys();
1398
1399         return false;
1400 }
1401
1402 function infobox_submit_callback() {
1403         if (xmlhttp.readyState == 4) {
1404                 closeInfoBox();
1405
1406                 try {
1407                         // called from prefs, reload tab
1408                         if (active_tab) {
1409                                 selectTab(active_tab, false);
1410                         }
1411                 } catch (e) { }
1412
1413                 if (xmlhttp.responseText) {
1414                         notify_info(xmlhttp.responseText);
1415                 }
1416
1417         }
1418 }
1419
1420 function infobox_callback() {
1421         if (xmlhttp.readyState == 4) {
1422
1423                 try {
1424
1425                         if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1426                                 var overlay = document.getElementById("dialog_overlay");
1427                                 if (overlay) {
1428                                         overlay.style.display = "block";
1429                                 }
1430                         }
1431
1432                         var box = document.getElementById('infoBox');
1433                         var shadow = document.getElementById('infoBoxShadow');
1434                         if (box) {
1435                                 box.innerHTML=xmlhttp.responseText;
1436                                 if (shadow) {
1437                                         shadow.style.display = "block";
1438                                 } else {
1439                                         box.style.display = "block";
1440                                 }
1441                         }
1442                         notify("");
1443                 } catch (e) {
1444                         exception_error("infobox_callback", e);
1445                 }
1446         }
1447 }
1448
1449 function helpbox_callback() {
1450         if (xmlhttp.readyState == 4) {
1451                 var box = document.getElementById('helpBox');
1452                 var shadow = document.getElementById('helpBoxShadow');
1453                 if (box) {
1454                         box.innerHTML=xmlhttp.responseText;
1455                         if (shadow) {
1456                                 shadow.style.display = "block";
1457                         } else {
1458                                 box.style.display = "block";
1459                         }
1460                 }
1461                 notify("");
1462         }
1463 }
1464
1465 function addFilter() {
1466
1467         if (!xmlhttp_ready(xmlhttp)) {
1468                 printLockingError();
1469                 return
1470         }
1471
1472         var form = document.forms['filter_add_form'];
1473         var reg_exp = form.reg_exp.value;
1474
1475         if (reg_exp == "") {
1476                 alert("Can't add filter: nothing to match on.");
1477                 return false;
1478         }
1479
1480         var query = Form.serialize("filter_add_form");
1481
1482         xmlhttp.open("GET", "backend.php?" + query, true);
1483         xmlhttp.onreadystatechange=infobox_submit_callback;
1484         xmlhttp.send(null);
1485
1486         return true;
1487 }
1488
1489 function toggleSubmitNotEmpty(e, submit_id) {
1490         try {
1491                 document.getElementById(submit_id).disabled = (e.value == "")
1492         } catch (e) {
1493                 exception_error("toggleSubmitNotEmpty", e);
1494         }
1495 }
1496
1497 function isValidURL(s) {
1498         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1499 }
1500
1501 function qaddFeed() {
1502
1503         if (!xmlhttp_ready(xmlhttp)) {
1504                 printLockingError();
1505                 return
1506         }
1507
1508         var form = document.forms['feed_add_form'];
1509         var feed_url = form.feed_url.value;
1510
1511         if (feed_url == "") {
1512                 alert("Can't subscribe: no feed URL given.");
1513                 return false;
1514         }
1515
1516         notify_progress(__("Subscribing to feed..."), true);
1517
1518         closeInfoBox();
1519
1520         var feeds_doc = document;
1521
1522 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1523
1524         var query = Form.serialize("feed_add_form");
1525
1526         debug("subscribe q: " + query);
1527
1528 /*      xmlhttp.open("GET", "backend.php?" + query, true);
1529         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1530         xmlhttp.send(null); */
1531
1532         xmlhttp.open("POST", "backend.php", true);
1533         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1534         xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
1535         xmlhttp.send(query);
1536
1537         return false;
1538 }
1539
1540 function filterCR(e, f)
1541 {
1542      var key;
1543
1544      if(window.event)
1545           key = window.event.keyCode;     //IE
1546      else
1547           key = e.which;     //firefox
1548
1549         if (key == 13) {
1550                 if (typeof f != 'undefined') {
1551                         f();
1552                         return false;
1553                 } else {
1554                         return false;
1555                 }
1556         } else {
1557                 return true;
1558         }
1559 }
1560
1561 function getMainContext() {
1562         return this.window;
1563 }
1564
1565 function getFeedsContext() {
1566         return this.window;
1567 }
1568
1569 function getContentContext() {
1570         return this.window;
1571 }
1572
1573 function getHeadlinesContext() {
1574         return this.window;
1575 }
1576
1577 var debug_last_class = "even";
1578
1579 function debug(msg) {
1580
1581         if (debug_last_class == "even") {
1582                 debug_last_class = "odd";
1583         } else {
1584                 debug_last_class = "even";
1585         }
1586
1587         var c = document.getElementById('debug_output');
1588         if (c && c.style.display == "block") {
1589                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1590                         c.removeChild(c.lastChild);
1591                 }
1592
1593                 var d = new Date();
1594                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1595                         ":" + leading_zero(d.getSeconds());
1596                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1597                         msg + "</li>" + c.innerHTML;
1598         }
1599 }
1600
1601 function getInitParam(key) {
1602         return init_params[key];
1603 }
1604
1605 function storeInitParam(key, value) {
1606         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1607         init_params[key] = value;
1608 }
1609
1610 function fatalError(code, message) {
1611         try {
1612
1613                 if (code == 6) {
1614                         window.location.href = "tt-rss.php";
1615                 } else if (code == 5) {
1616                         window.location.href = "update.php";
1617                 } else {
1618                         var fe = document.getElementById("fatal_error");
1619                         var fc = document.getElementById("fatal_error_msg");
1620
1621                         if (message == "") message = "Unknown error";
1622
1623                         fc.innerHTML = "<img src='images/sign_excl.png'> " + message + " (Code " + code + ")";
1624
1625                         fe.style.display = "block";
1626                 }
1627
1628         } catch (e) {
1629                 exception_error("fatalError", e);
1630         }
1631 }
1632
1633 function getFeedName(id, is_cat) {
1634         var d = getFeedsContext().document;
1635
1636         var e;
1637
1638         if (is_cat) {
1639                 e = d.getElementById("FCATN-" + id);
1640         } else {
1641                 e = d.getElementById("FEEDN-" + id);
1642         }
1643         if (e) {
1644                 return e.innerHTML.stripTags();
1645         } else {
1646                 return null;
1647         }
1648 }
1649
1650 function viewContentUrl(url) {
1651         getContentContext().location = url;
1652 }
1653
1654 function filterDlgCheckAction(sender) {
1655
1656         try {
1657
1658                 var action = sender[sender.selectedIndex].value;
1659
1660                 var form = document.forms["filter_add_form"];
1661
1662                 if (!form) {
1663                         form = document.forms["filter_edit_form"];
1664                 }
1665
1666                 if (!form) {
1667                         debug("filterDlgCheckAction: can't find form!");
1668                         return;
1669                 }
1670
1671                 var action_param = form.action_param;
1672
1673                 if (!action_param) {
1674                         debug("filterDlgCheckAction: can't find action param!");
1675                         return;
1676                 }
1677
1678                 // if selected action supports parameters, enable params field
1679                 if (action == 4) {
1680                         action_param.disabled = false;
1681                 } else {
1682                         action_param.disabled = true;
1683                 }
1684
1685         } catch (e) {
1686                 exception_error(e, "filterDlgCheckAction");
1687         }
1688
1689 }
1690
1691 function explainError(code) {
1692         return displayDlg("explainError", code);
1693 }
1694
1695 function logoutUser() {
1696         try {
1697                 if (xmlhttp_ready(xmlhttp_rpc)) {
1698
1699                         notify_progress("Logging out, please wait...", true);
1700
1701                         xmlhttp_rpc.open("GET", "backend.php?op=rpc&subop=logout", true);
1702                         xmlhttp_rpc.onreadystatechange=logout_callback;
1703                         xmlhttp_rpc.send(null);
1704                 } else {
1705                         printLockingError();
1706                 }
1707         } catch (e) {
1708                 exception_error("logoutUser", e);
1709         }
1710 }
1711
1712 // this only searches loaded headlines list, not in CDM
1713 function getRelativePostIds(id) {
1714
1715         debug("getRelativePostIds: " + id);
1716
1717         var ids = new Array();
1718         var container = document.getElementById("headlinesList");
1719
1720         if (container) {
1721                 var rows = container.rows;
1722
1723                 for (var i = 0; i < rows.length; i++) {
1724                         var r_id = rows[i].id.replace("RROW-", "");
1725
1726                         if (r_id == id) {
1727                                 if (i > 0) ids.push(rows[i-1].id.replace("RROW-", ""));
1728                                 if (i > 1) ids.push(rows[i-2].id.replace("RROW-", ""));
1729                                 if (i > 2) ids.push(rows[i-3].id.replace("RROW-", ""));
1730
1731                                 if (i < rows.length-1) ids.push(rows[i+1].id.replace("RROW-", ""));
1732                                 if (i < rows.length-2) ids.push(rows[i+2].id.replace("RROW-", ""));
1733                                 if (i < rows.length-3) ids.push(rows[i+3].id.replace("RROW-", ""));
1734
1735                                 return ids;
1736                         }
1737                 }
1738         }
1739
1740         return false;
1741 }
1742
1743 function openArticleInNewWindow(id) {
1744         try {
1745
1746                 if (!xmlhttp_ready(xmlhttp_rpc)) {
1747                         printLockingError();
1748                         return
1749                 }
1750
1751                 debug("openArticleInNewWindow: " + id);
1752
1753                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1754
1755                 debug(query);
1756
1757                 xmlhttp_rpc.open("GET", query, true);
1758                 xmlhttp_rpc.onreadystatechange=open_article_callback;
1759                 xmlhttp_rpc.send(null);
1760
1761         } catch (e) {
1762                 exception_error("openArticleInNewWindow", e);
1763         }
1764 }
1765