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                                 var id = xmlhttp_rpc.responseXML.getElementsByTagName("id")[0];
  74
  75                                 if (link) {
  76                                         window.open(link.firstChild.nodeValue, "_blank");
  77
  78                                         if (id) {
  79                                                 id = id.firstChild.nodeValue;
  80                                                 if (!document.getElementById("headlinesList")) {
  81                                                         window.setTimeout("toggleUnread(" + id + ", 0)", 100);
  82                                                 }
  83                                         }
  84                                 }
  85                         }
  86
  87                 } catch (e) {
  88                         exception_error("open_article_callback", e);
  89                 }
  90         }
  91 }
  92
  93 function logout_callback() {
  94         var container = document.getElementById('notify');
  95         if (xmlhttp.readyState == 4) {
  96                 try {
  97                         var date = new Date();
  98                         var timestamp = Math.round(date.getTime() / 1000);
  99                         window.location.href = "tt-rss.php";
 100                 } catch (e) {
 101                         exception_error("logout_callback", e);
 102                 }
 103         }
 104 }
 105
 106 function notify_callback() {
 107         var container = document.getElementById('notify');
 108         if (xmlhttp.readyState == 4) {
 109                 container.innerHTML=xmlhttp.responseText;
 110         }
 111 }
 112
 113 function rpc_notify_callback() {
 114         var container = document.getElementById('notify');
 115         if (xmlhttp_rpc.readyState == 4) {
 116                 container.innerHTML=xmlhttp_rpc.responseText;
 117         }
 118 }
 119
 120 function param_escape(arg) {
 121         if (typeof encodeURIComponent != 'undefined')
 122                 return encodeURIComponent(arg);
 123         else
 124                 return escape(arg);
 125 }
 126
 127 function param_unescape(arg) {
 128         if (typeof decodeURIComponent != 'undefined')
 129                 return decodeURIComponent(arg);
 130         else
 131                 return unescape(arg);
 132 }
 133
 134 function delay(gap) {
 135         var then,now;
 136         then=new Date().getTime();
 137         now=then;
 138         while((now-then)<gap) {
 139                 now=new Date().getTime();
 140         }
 141 }
 142
 143 var notify_hide_timerid = false;
 144
 145 function hide_notify() {
 146         var n = document.getElementById("notify");
 147         if (n) {
 148                 n.style.display = "none";
 149         }
 150 }
 151
 152 function notify_real(msg, no_hide, n_type) {
 153
 154         var n = document.getElementById("notify");
 155         var nb = document.getElementById("notify_body");
 156
 157         if (!n || !nb) return;
 158
 159         if (notify_hide_timerid) {
 160                 window.clearTimeout(notify_hide_timerid);
 161         }
 162
 163         if (msg == "") {
 164                 if (n.style.display == "block") {
 165                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 166                 }
 167                 return;
 168         } else {
 169                 n.style.display = "block";
 170         }
 171
 172         /* types:
 173
 174                 1 - generic
 175                 2 - progress
 176                 3 - error
 177                 4 - info
 178
 179         */
 180
 181         if (typeof __ != 'undefined') {
 182                 msg = __(msg);
 183         }
 184
 185         if (n_type == 1) {
 186                 n.className = "notify";
 187         } else if (n_type == 2) {
 188                 n.className = "notifyProgress";
 189                 msg = "<img src='images/indicator_white.gif'> " + msg;
 190         } else if (n_type == 3) {
 191                 n.className = "notifyError";
 192                 msg = "<img src='images/sign_excl.png'> " + msg;
 193         } else if (n_type == 4) {
 194                 n.className = "notifyInfo";
 195                 msg = "<img src='images/sign_info.png'> " + msg;
 196         }
 197
 198 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 199
 200         nb.innerHTML = msg;
 201
 202         if (!no_hide) {
 203                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 204         }
 205 }
 206
 207 function notify(msg, no_hide) {
 208         notify_real(msg, no_hide, 1);
 209 }
 210
 211 function notify_progress(msg, no_hide) {
 212         notify_real(msg, no_hide, 2);
 213 }
 214
 215 function notify_error(msg, no_hide) {
 216         notify_real(msg, no_hide, 3);
 217
 218 }
 219
 220 function notify_info(msg, no_hide) {
 221         notify_real(msg, no_hide, 4);
 222 }
 223
 224 function printLockingError() {
 225         notify_info("Please wait until operation finishes.");
 226 }
 227
 228 function hotkey_handler(e) {
 229
 230         try {
 231
 232                 var keycode;
 233                 var shift_key = false;
 234
 235                 try {
 236                         shift_key = e.shiftKey;
 237                 } catch (e) {
 238
 239                 }
 240
 241                 if (!hotkeys_enabled) return;
 242
 243                 if (window.event) {
 244                         keycode = window.event.keyCode;
 245                 } else if (e) {
 246                         keycode = e.which;
 247                 }
 248
 249                 if (keycode == 82) { // r
 250                         return scheduleFeedUpdate(true);
 251                 }
 252
 253                 if (keycode == 83) { // s
 254                         return displayDlg("search", getActiveFeedId());
 255                 }
 256
 257                 if (keycode == 85) { // u
 258                         if (getActiveFeedId()) {
 259                                 return viewfeed(getActiveFeedId(), "ForceUpdate");
 260                         }
 261                 }
 262
 263                 if (keycode == 65) { // a
 264                         return toggleDispRead();
 265                 }
 266
 267                 var feedlist = document.getElementById('feedList');
 268
 269                 if (keycode == 74) { // j
 270                         var feed = getActiveFeedId();
 271                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 272                         if (new_feed) viewfeed(new_feed, '');
 273                 }
 274
 275                 if (keycode == 75) { // k
 276                         var feed = getActiveFeedId();
 277                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 278                         if (new_feed) viewfeed(new_feed, '');
 279                 }
 280
 281                 if (keycode == 78 || keycode == 40) { // n, down
 282                         if (typeof moveToPost != 'undefined') {
 283                                 return moveToPost('next');
 284                         }
 285                 }
 286
 287                 if (keycode == 80 || keycode == 38) { // p, up
 288                         if (typeof moveToPost != 'undefined') {
 289                                 return moveToPost('prev');
 290                         }
 291                 }
 292
 293                 if (keycode == 68 && shift_key) { // d
 294                         if (!debug_mode_enabled) {
 295                                 document.getElementById('debug_output').style.display = 'block';
 296                                 debug('debug mode activated');
 297                         } else {
 298                                 document.getElementById('debug_output').style.display = 'none';
 299                         }
 300
 301                         debug_mode_enabled = !debug_mode_enabled;
 302                 }
 303
 304                 if (keycode == 190 && shift_key) { // >
 305                         viewFeedGoPage(1);
 306                 }
 307
 308                 if (keycode == 188 && shift_key) { // <
 309                         viewFeedGoPage(-1);
 310                 }
 311
 312                 if (keycode == 191 && shift_key) { // ?
 313                         viewFeedGoPage(0);
 314                 }
 315
 316                 if (keycode == 69 && shift_key) { // e
 317                         return editFeedDlg(getActiveFeedId());
 318                 }
 319
 320                 if (keycode == 70 && shift_key) { // f
 321                         if (getActiveFeedId()) {
 322                                 return catchupCurrentFeed();
 323                         }
 324                 }
 325
 326                 if (keycode == 80 && shift_key) { // p
 327                         if (getActiveFeedId()) {
 328                                 return catchupPage();
 329                         }
 330                 }
 331
 332                 if (keycode == 86) { // v
 333                         if (getActiveArticleId()) {
 334                                 openArticleInNewWindow(getActiveArticleId());
 335                         }
 336                 }
 337
 338                 if (keycode == 84) { // t
 339
 340                         var id = getActiveArticleId();
 341
 342                         if (id) {
 343
 344                                 var cb = document.getElementById("RCHK-" + id);
 345
 346                                 if (cb) {
 347                                         cb.checked = !cb.checked;
 348                                         toggleSelectRowById(cb, "RROW-" + id);
 349                                 }
 350                         }
 351                 }
 352
 353                 if (keycode == 67) { // c
 354                         var id = getActiveArticleId();
 355
 356                         if (id) {
 357                                 toggleUnread(id, 0);
 358                         }
 359                 }
 360
 361                 if (typeof localHotkeyHandler != 'undefined') {
 362                         try {
 363                                 return localHotkeyHandler(e);
 364                         } catch (e) {
 365                                 exception_error("hotkey_handler, local:", e);
 366                         }
 367                 }
 368
 369                 debug("KP=" + keycode);
 370         } catch (e) {
 371                 exception_error("hotkey_handler", e);
 372         }
 373 }
 374
 375 function cleanSelectedList(element) {
 376         var content = document.getElementById(element);
 377
 378         if (!document.getElementById("feedCatHolder")) {
 379                 for (i = 0; i < content.childNodes.length; i++) {
 380                         var child = content.childNodes[i];
 381                         try {
 382                                 child.className = child.className.replace("Selected", "");
 383                         } catch (e) {
 384                                 //
 385                         }
 386                 }
 387         } else {
 388                 for (i = 0; i < content.childNodes.length; i++) {
 389                         var child = content.childNodes[i];
 390                         if (child.id == "feedCatHolder") {
 391                                 debug(child.id);
 392                                 var fcat = child.lastChild;
 393                                 for (j = 0; j < fcat.childNodes.length; j++) {
 394                                         var feed = fcat.childNodes[j];
 395                                         feed.className = feed.className.replace("Selected", "");
 396                                 }
 397                         }
 398                 }
 399         }
 400 }
 401
 402
 403 function cleanSelected(element) {
 404         var content = document.getElementById(element);
 405
 406         for (i = 0; i < content.rows.length; i++) {
 407                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 408         }
 409 }
 410
 411 function getVisibleUnreadHeadlines() {
 412         var content = document.getElementById("headlinesList");
 413
 414         var rows = new Array();
 415
 416         for (i = 0; i < content.rows.length; i++) {
 417                 var row_id = content.rows[i].id.replace("RROW-", "");
 418                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 419                                 rows.push(row_id);
 420                 }
 421         }
 422         return rows;
 423 }
 424
 425 function getVisibleHeadlineIds() {
 426
 427         var content = document.getElementById("headlinesList");
 428
 429         var rows = new Array();
 430
 431         for (i = 0; i < content.rows.length; i++) {
 432                 var row_id = content.rows[i].id.replace("RROW-", "");
 433                 if (row_id.length > 0) {
 434                                 rows.push(row_id);
 435                 }
 436         }
 437         return rows;
 438 }
 439
 440 function getFirstVisibleHeadlineId() {
 441         var rows = getVisibleHeadlineIds();
 442         return rows[0];
 443 }
 444
 445 function getLastVisibleHeadlineId() {
 446         var rows = getVisibleHeadlineIds();
 447         return rows[rows.length-1];
 448 }
 449
 450 function markHeadline(id) {
 451         var row = document.getElementById("RROW-" + id);
 452         if (row) {
 453                 var is_active = false;
 454
 455                 if (row.className.match("Active")) {
 456                         is_active = true;
 457                 }
 458                 row.className = row.className.replace("Selected", "");
 459                 row.className = row.className.replace("Active", "");
 460                 row.className = row.className.replace("Insensitive", "");
 461
 462                 if (is_active) {
 463                         row.className = row.className = "Active";
 464                 }
 465
 466                 var check = document.getElementById("RCHK-" + id);
 467
 468                 if (check) {
 469                         check.checked = true;
 470                 }
 471
 472                 row.className = row.className + "Selected";
 473
 474         }
 475 }
 476
 477 function getFeedIds() {
 478         var content = document.getElementById("feedsList");
 479
 480         var rows = new Array();
 481
 482         for (i = 0; i < content.rows.length; i++) {
 483                 var id = content.rows[i].id.replace("FEEDR-", "");
 484                 if (id.length > 0) {
 485                         rows.push(id);
 486                 }
 487         }
 488
 489         return rows;
 490 }
 491
 492 function setCookie(name, value, lifetime, path, domain, secure) {
 493
 494         var d = false;
 495
 496         if (lifetime) {
 497                 d = new Date();
 498                 d.setTime(d.getTime() + (lifetime * 1000));
 499         }
 500
 501         debug("setCookie: " + name + " => " + value + ": " + d);
 502
 503         int_setCookie(name, value, d, path, domain, secure);
 504
 505 }
 506
 507 function int_setCookie(name, value, expires, path, domain, secure) {
 508         document.cookie= name + "=" + escape(value) +
 509                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 510                 ((path) ? "; path=" + path : "") +
 511                 ((domain) ? "; domain=" + domain : "") +
 512                 ((secure) ? "; secure" : "");
 513 }
 514
 515 function delCookie(name, path, domain) {
 516         if (getCookie(name)) {
 517                 document.cookie = name + "=" +
 518                 ((path) ? ";path=" + path : "") +
 519                 ((domain) ? ";domain=" + domain : "" ) +
 520                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 521         }
 522 }
 523
 524
 525 function getCookie(name) {
 526
 527         var dc = document.cookie;
 528         var prefix = name + "=";
 529         var begin = dc.indexOf("; " + prefix);
 530         if (begin == -1) {
 531             begin = dc.indexOf(prefix);
 532             if (begin != 0) return null;
 533         }
 534         else {
 535             begin += 2;
 536         }
 537         var end = document.cookie.indexOf(";", begin);
 538         if (end == -1) {
 539             end = dc.length;
 540         }
 541         return unescape(dc.substring(begin + prefix.length, end));
 542 }
 543
 544 function disableContainerChildren(id, disable, doc) {
 545
 546         if (!doc) doc = document;
 547
 548         var container = doc.getElementById(id);
 549
 550         if (!container) {
 551                 //alert("disableContainerChildren: element " + id + " not found");
 552                 return;
 553         }
 554
 555         for (var i = 0; i < container.childNodes.length; i++) {
 556                 var child = container.childNodes[i];
 557
 558                 try {
 559                         child.disabled = disable;
 560                 } catch (E) {
 561
 562                 }
 563
 564                 if (disable) {
 565                         if (child.className && child.className.match("button")) {
 566                                 child.className = "disabledButton";
 567                         }
 568                 } else {
 569                         if (child.className && child.className.match("disabledButton")) {
 570                                 child.className = "button";
 571                         }
 572                 }
 573         }
 574
 575 }
 576
 577 function gotoPreferences() {
 578         document.location.href = "prefs.php";
 579 }
 580
 581 function gotoMain() {
 582         document.location.href = "tt-rss.php";
 583 }
 584
 585 function gotoExportOpml() {
 586         document.location.href = "opml.php?op=Export";
 587 }
 588
 589 function getActiveFeedId() {
 590 //      return getCookie("ttrss_vf_actfeed");
 591         try {
 592                 debug("gAFID: " + active_feed_id);
 593                 return active_feed_id;
 594         } catch (e) {
 595                 exception_error("getActiveFeedId", e);
 596         }
 597 }
 598
 599 function activeFeedIsCat() {
 600         return active_feed_is_cat;
 601 }
 602
 603 function setActiveFeedId(id) {
 604 //      return setCookie("ttrss_vf_actfeed", id);
 605         try {
 606                 debug("sAFID(" + id + ")");
 607                 active_feed_id = id;
 608         } catch (e) {
 609                 exception_error("setActiveFeedId", e);
 610         }
 611 }
 612
 613 function parse_counters(reply, scheduled_call) {
 614         try {
 615
 616                 var feeds_found = 0;
 617
 618                 var elems = reply.getElementsByTagName("counter");
 619
 620                 for (var l = 0; l < elems.length; l++) {
 621
 622                         var id = elems[l].getAttribute("id");
 623                         var t = elems[l].getAttribute("type");
 624                         var ctr = elems[l].getAttribute("counter");
 625                         var error = elems[l].getAttribute("error");
 626                         var has_img = elems[l].getAttribute("hi");
 627                         var updated = elems[l].getAttribute("updated");
 628
 629                         if (id == "global-unread") {
 630                                 global_unread = ctr;
 631                                 updateTitle();
 632                                 continue;
 633                         }
 634
 635                         if (id == "subscribed-feeds") {
 636                                 feeds_found = ctr;
 637                                 continue;
 638                         }
 639
 640                         if (t == "category") {
 641                                 var catctr = document.getElementById("FCATCTR-" + id);
 642                                 if (catctr) {
 643                                         catctr.innerHTML = "(" + ctr + ")";
 644                                         if (ctr > 0) {
 645                                                 catctr.className = "catCtrHasUnread";
 646                                         } else {
 647                                                 catctr.className = "catCtrNoUnread";
 648                                         }
 649                                 }
 650                                 continue;
 651                         }
 652
 653                         var feedctr = document.getElementById("FEEDCTR-" + id);
 654                         var feedu = document.getElementById("FEEDU-" + id);
 655                         var feedr = document.getElementById("FEEDR-" + id);
 656                         var feed_img = document.getElementById("FIMG-" + id);
 657                         var feedlink = document.getElementById("FEEDL-" + id);
 658                         var feedupd = document.getElementById("FLUPD-" + id);
 659
 660                         if (updated && feedlink) {
 661                                 if (error) {
 662                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 663                                 } else {
 664                                         feedlink.title = "Updated: " + updated;
 665                                 }
 666                         }
 667
 668                         if (updated && feedupd) {
 669                                 if (error) {
 670                                         feedupd.innerHTML = updated + " (Error)";
 671                                 } else {
 672                                         feedupd.innerHTML = updated;
 673                                 }
 674                         }
 675
 676                         if (has_img && feed_img && !is_msie()) {
 677                                 if (!feed_img.src.match(id + ".ico")) {
 678                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 679                                 }
 680                         }
 681
 682                         if (feedctr && feedu && feedr) {
 683
 684                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 685                                         viewCurrentFeed();
 686                                 }
 687
 688                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 689
 690                                 feedu.innerHTML = ctr;
 691
 692                                 if (error) {
 693                                         feedr.className = feedr.className.replace("feed", "error");
 694                                 } else if (id > 0) {
 695                                         feedr.className = feedr.className.replace("error", "feed");
 696                                 }
 697
 698                                 if (ctr > 0) {
 699                                         feedctr.className = "odd";
 700                                         if (!feedr.className.match("Unread")) {
 701                                                 var is_selected = feedr.className.match("Selected");
 702
 703                                                 feedr.className = feedr.className.replace("Selected", "");
 704                                                 feedr.className = feedr.className.replace("Unread", "");
 705
 706                                                 feedr.className = feedr.className + "Unread";
 707
 708                                                 if (is_selected) {
 709                                                         feedr.className = feedr.className + "Selected";
 710                                                 }
 711
 712                                         }
 713
 714                                         if (row_needs_hl) {
 715                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5"});
 716                                         }
 717                                 } else {
 718                                         feedctr.className = "invisible";
 719                                         feedr.className = feedr.className.replace("Unread", "");
 720                                 }
 721                         }
 722                 }
 723
 724                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 725
 726                 var feeds_stored = number_of_feeds;
 727
 728                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 729
 730                 if (feeds_stored != feeds_found) {
 731                         number_of_feeds = feeds_found;
 732
 733                         if (feeds_stored != 0 && feeds_found != 0) {
 734                                 debug("Subscribed feed number changed, refreshing feedlist");
 735                                 setTimeout('updateFeedList(false, false)', 50);
 736                         }
 737                 }
 738
 739         } catch (e) {
 740                 exception_error("parse_counters", e);
 741         }
 742 }
 743
 744 function parse_counters_reply(xmlhttp, scheduled_call) {
 745
 746         if (!xmlhttp.responseXML) {
 747                 notify_error("Backend did not return valid XML", true);
 748                 return;
 749         }
 750
 751         var reply = xmlhttp.responseXML.firstChild;
 752
 753         if (!reply) {
 754                 notify_error("Backend did not return expected XML object", true);
 755                 updateTitle("");
 756                 return;
 757         }
 758
 759         var error_code = false;
 760         var error_msg = false;
 761
 762         if (reply.firstChild) {
 763                 error_code = reply.firstChild.getAttribute("error-code");
 764                 error_msg = reply.firstChild.getAttribute("error-msg");
 765         }
 766
 767         if (!error_code) {
 768                 error_code = reply.getAttribute("error-code");
 769                 error_msg = reply.getAttribute("error-msg");
 770         }
 771
 772         if (error_code && error_code != 0) {
 773                 debug("refetch_callback: got error code " + error_code);
 774                 return fatalError(error_code, error_msg);
 775         }
 776
 777         var counters = reply.getElementsByTagName("counters")[0];
 778
 779         parse_counters(counters, scheduled_call);
 780
 781         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 782
 783         parse_runtime_info(runtime_info);
 784
 785         if (getInitParam("feeds_sort_by_unread") == 1) {
 786                         resort_feedlist();
 787         }
 788
 789         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 790
 791 }
 792
 793 function all_counters_callback() {
 794         if (xmlhttp_rpc.readyState == 4) {
 795                 try {
 796 /*                      if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 797                                 debug("[all_counters_callback] backend did not return valid XML");
 798                                 return;
 799                         }
 800
 801                         debug("in all_counters_callback : " + xmlhttp_rpc.responseXML);
 802
 803                         var reply = xmlhttp_rpc.responseXML.firstChild;
 804
 805                         var counters = reply.firstChild;
 806
 807                         parse_counters(counters);
 808
 809                         var runtime = counters.nextSibling;
 810
 811                         if (runtime) {
 812                                 parse_runtime_info(runtime);
 813                         }
 814
 815                         if (getInitParam("feeds_sort_by_unread") == 1) {
 816                                 resort_feedlist();
 817                         }
 818
 819                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1); */
 820
 821                         debug("in all_counters_callback");
 822
 823                         parse_counters_reply(xmlhttp_rpc);
 824
 825                 } catch (e) {
 826                         exception_error("all_counters_callback", e);
 827                 }
 828         }
 829 }
 830
 831 function get_feed_entry_unread(doc, elem) {
 832
 833         var id = elem.id.replace("FEEDR-", "");
 834
 835         if (id <= 0) {
 836                 return -1;
 837         }
 838
 839         try {
 840                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 841         } catch (e) {
 842                 return -1;
 843         }
 844 }
 845
 846 function resort_category(doc, node) {
 847         debug("resort_category: " + node);
 848
 849         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 850                 for (i = 0; i < node.childNodes.length; i++) {
 851                         if (node.childNodes[i].nodeName != "LI") { continue; }
 852
 853                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 854                                 continue;
 855                         }
 856
 857                         for (j = i+1; j < node.childNodes.length; j++) {
 858                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 859
 860                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 861                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 862
 863                                 if (cur_val > tmp_val) {
 864                                         tempnode_i = node.childNodes[i].cloneNode(true);
 865                                         tempnode_j = node.childNodes[j].cloneNode(true);
 866                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 867                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 868                                 }
 869                         }
 870
 871                 }
 872         }
 873
 874 }
 875
 876 function resort_feedlist() {
 877         debug("resort_feedlist");
 878
 879         var fd = document;
 880
 881         if (fd.getElementById("feedCatHolder")) {
 882
 883                 var feeds = fd.getElementById("feedList");
 884                 var child = feeds.firstChild;
 885
 886                 while (child) {
 887
 888                         if (child.id == "feedCatHolder") {
 889                                 resort_category(fd, child.firstChild);
 890                         }
 891
 892                         child = child.nextSibling;
 893                 }
 894
 895         } else {
 896                 resort_category(fd, fd.getElementById("feedList"));
 897         }
 898 }
 899
 900 function update_all_counters(feed) {
 901         if (xmlhttp_ready(xmlhttp_rpc)) {
 902                 var query = "backend.php?op=rpc&subop=getAllCounters";
 903
 904                 if (feed > 0) {
 905                         query = query + "&aid=" + feed;
 906                 }
 907
 908                 if (tagsAreDisplayed()) {
 909                         query = query + "&omode=lt";
 910                 } else {
 911                         query = query + "&omode=flc";
 912                 }
 913
 914                 debug("update_all_counters QUERY: " + query);
 915
 916                 var date = new Date();
 917                 var timestamp = Math.round(date.getTime() / 1000);
 918                 query = query + "&ts=" + timestamp
 919
 920                 xmlhttp_rpc.open("GET", query, true);
 921                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 922                 xmlhttp_rpc.send(null);
 923         }
 924 }
 925
 926 function popupHelp(tid) {
 927         var w = window.open("backend.php?op=help&tid=" + tid,
 928                 "Popup Help",
 929                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 930 }
 931
 932 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 933   * * @author Sundar Dorai-Raj
 934   * * Email: sdoraira@vt.edu
 935   * * This program is free software; you can redistribute it and/or
 936   * * modify it under the terms of the GNU General Public License
 937   * * as published by the Free Software Foundation; either version 2
 938   * * of the License, or (at your option) any later version,
 939   * * provided that any use properly credits the author.
 940   * * This program is distributed in the hope that it will be useful,
 941   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 942   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 943   * * GNU General Public License for more details at http://www.gnu.org * * */
 944
 945   var numbers=".0123456789";
 946   function isNumeric(x) {
 947     // is x a String or a character?
 948     if(x.length>1) {
 949       // remove negative sign
 950       x=Math.abs(x)+"";
 951       for(j=0;j<x.length;j++) {
 952         // call isNumeric recursively for each character
 953         number=isNumeric(x.substring(j,j+1));
 954         if(!number) return number;
 955       }
 956       return number;
 957     }
 958     else {
 959       // if x is number return true
 960       if(numbers.indexOf(x)>=0) return true;
 961       return false;
 962     }
 963   }
 964
 965
 966 function hideOrShowFeeds(doc, hide) {
 967
 968         debug("hideOrShowFeeds: " + doc + ", " + hide);
 969
 970         var fd = document;
 971
 972         var list = fd.getElementById("feedList");
 973
 974         if (fd.getElementById("feedCatHolder")) {
 975
 976                 var feeds = fd.getElementById("feedList");
 977                 var child = feeds.firstChild;
 978
 979                 while (child) {
 980
 981                         if (child.id == "feedCatHolder") {
 982                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 983                         }
 984
 985                         child = child.nextSibling;
 986                 }
 987
 988         } else {
 989                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 990         }
 991 }
 992
 993 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 994
 995 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 996
 997         var cat_unread = 0;
 998
 999         if (!node) {
1000                 debug("hideOrShowFeeds: passed node is null, aborting");
1001                 return;
1002         }
1003
1004         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
1005                 for (i = 0; i < node.childNodes.length; i++) {
1006                         if (node.childNodes[i].nodeName != "LI") { continue; }
1007
1008                         if (node.childNodes[i].style != undefined) {
1009
1010                                 var has_unread = (node.childNodes[i].className != "feed" &&
1011                                         node.childNodes[i].className != "label" &&
1012                                         node.childNodes[i].className != "virt" &&
1013                                         node.childNodes[i].className != "tag");
1014
1015         //                      debug(node.childNodes[i].id + " --> " + has_unread);
1016
1017                                 if (hide && !has_unread) {
1018                                         //node.childNodes[i].style.display = "none";
1019                                         Effect.Fade(node.childNodes[i], {duration : 0.3});
1020                                 }
1021
1022                                 if (!hide) {
1023                                         node.childNodes[i].style.display = "list-item";
1024                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
1025                                 }
1026
1027                                 if (has_unread) {
1028                                         node.childNodes[i].style.display = "list-item";
1029                                         cat_unread++;
1030                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
1031                                         //Effect.Highlight(node.childNodes[i]);
1032                                 }
1033                         }
1034                 }
1035         }
1036
1037         if (cat_unread == 0) {
1038                 if (cat_node.style == undefined) {
1039                         debug("ERROR: supplied cat_node " + cat_node +
1040                                 " has no styles. WTF?");
1041                         return;
1042                 }
1043                 if (hide) {
1044                         //cat_node.style.display = "none";
1045                         Effect.Fade(cat_node, {duration : 0.3});
1046                 } else {
1047                         cat_node.style.display = "list-item";
1048                 }
1049         } else {
1050                 try {
1051                         cat_node.style.display = "list-item";
1052                 } catch (e) {
1053                         debug(e);
1054                 }
1055         }
1056
1057 //      debug("unread for category: " + cat_unread);
1058 }
1059
1060 function selectTableRow(r, do_select) {
1061         r.className = r.className.replace("Selected", "");
1062
1063         if (do_select) {
1064                 r.className = r.className + "Selected";
1065         }
1066 }
1067
1068 function selectTableRowById(elem_id, check_id, do_select) {
1069
1070         try {
1071
1072                 var row = document.getElementById(elem_id);
1073
1074                 if (row) {
1075                         selectTableRow(row, do_select);
1076                 }
1077
1078                 var check = document.getElementById(check_id);
1079
1080                 if (check) {
1081                         check.checked = do_select;
1082                 }
1083         } catch (e) {
1084                 exception_error("selectTableRowById", e);
1085         }
1086 }
1087
1088 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
1089         classcheck, reset_others) {
1090
1091         var content = document.getElementById(content_id);
1092
1093         if (!content) {
1094                 alert("[selectTableRows] Element " + content_id + " not found.");
1095                 return;
1096         }
1097
1098         for (i = 0; i < content.rows.length; i++) {
1099                 if (!classcheck || content.rows[i].className.match(classcheck)) {
1100
1101                         if (content.rows[i].id.match(prefix)) {
1102                                 selectTableRow(content.rows[i], do_select);
1103
1104                                 var row_id = content.rows[i].id.replace(prefix, "");
1105                                 var check = document.getElementById(check_prefix + row_id);
1106
1107                                 if (check) {
1108                                         check.checked = do_select;
1109                                 }
1110                         } else if (reset_others) {
1111                                 selectTableRow(content.rows[i], false);
1112
1113                                 var row_id = content.rows[i].id.replace(prefix, "");
1114                                 var check = document.getElementById(check_prefix + row_id);
1115
1116                                 if (check) {
1117                                         check.checked = false;
1118                                 }
1119
1120                         }
1121                 } else if (reset_others) {
1122                         selectTableRow(content.rows[i], false);
1123
1124                         var row_id = content.rows[i].id.replace(prefix, "");
1125                         var check = document.getElementById(check_prefix + row_id);
1126
1127                         if (check) {
1128                                 check.checked = false;
1129                         }
1130
1131                 }
1132         }
1133 }
1134
1135 function getSelectedTableRowIds(content_id, prefix) {
1136
1137         var content = document.getElementById(content_id);
1138
1139         if (!content) {
1140                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
1141                 return;
1142         }
1143
1144         var sel_rows = new Array();
1145
1146         for (i = 0; i < content.rows.length; i++) {
1147                 if (content.rows[i].id.match(prefix) &&
1148                                 content.rows[i].className.match("Selected")) {
1149
1150                         var row_id = content.rows[i].id.replace(prefix + "-", "");
1151                         sel_rows.push(row_id);
1152                 }
1153         }
1154
1155         return sel_rows;
1156
1157 }
1158
1159 function toggleSelectRowById(sender, id) {
1160         var row = document.getElementById(id);
1161
1162         if (sender.checked) {
1163                 if (!row.className.match("Selected")) {
1164                         row.className = row.className + "Selected";
1165                 }
1166         } else {
1167                 if (row.className.match("Selected")) {
1168                         row.className = row.className.replace("Selected", "");
1169                 }
1170         }
1171 }
1172
1173 function toggleSelectListRow(sender) {
1174         var parent_row = sender.parentNode;
1175
1176         if (sender.checked) {
1177                 if (!parent_row.className.match("Selected")) {
1178                         parent_row.className = parent_row.className + "Selected";
1179                 }
1180         } else {
1181                 if (parent_row.className.match("Selected")) {
1182                         parent_row.className = parent_row.className.replace("Selected", "");
1183                 }
1184         }
1185 }
1186
1187 function tSR(sender) {
1188         return toggleSelectRow(sender);
1189 }
1190
1191 function toggleSelectRow(sender) {
1192         var parent_row = sender.parentNode.parentNode;
1193
1194         if (sender.checked) {
1195                 if (!parent_row.className.match("Selected")) {
1196                         parent_row.className = parent_row.className + "Selected";
1197                 }
1198         } else {
1199                 if (parent_row.className.match("Selected")) {
1200                         parent_row.className = parent_row.className.replace("Selected", "");
1201                 }
1202         }
1203 }
1204
1205 function openExternalUrl(url) {
1206         var w = window.open(url);
1207 }
1208
1209 function getRelativeFeedId(list, id, direction, unread_only) {
1210         var rows = list.getElementsByTagName("LI");
1211         var feeds = new Array();
1212
1213         for (var i = 0; i < rows.length; i++) {
1214                 if (rows[i].id.match("FEEDR-")) {
1215
1216                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1217
1218                                 if (!unread_only ||
1219                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1220                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1221                                 }
1222                         }
1223                 }
1224         }
1225
1226         if (!id) {
1227                 if (direction == "next") {
1228                         return feeds.shift();
1229                 } else {
1230                         return feeds.pop();
1231                 }
1232         } else {
1233                 if (direction == "next") {
1234                         var idx = feeds.indexOf(id);
1235                         if (idx != -1 && idx < feeds.length) {
1236                                 return feeds[idx+1];
1237                         } else {
1238                                 return getRelativeFeedId(list, false, direction, unread_only);
1239                         }
1240                 } else {
1241                         var idx = feeds.indexOf(id);
1242                         if (idx > 0) {
1243                                 return feeds[idx-1];
1244                         } else {
1245                                 return getRelativeFeedId(list, false, direction, unread_only);
1246                         }
1247                 }
1248
1249         }
1250
1251 /*      if (!id) {
1252                 if (direction == "next") {
1253                         for (i = 0; i < list.childNodes.length; i++) {
1254                                 var child = list.childNodes[i];
1255                                 if (child.id && child.id == "feedCatHolder") {
1256                                         if (child.lastChild) {
1257                                                 var cr = getRelativeFeedId(child.firstChild, id, direction, unread_only);
1258                                                 if (cr) return cr;
1259                                         }
1260                                 } else if (child.id && child.id.match("FEEDR-")) {
1261                                         return child.id.replace('FEEDR-', '');
1262                                 }
1263                         }
1264                 }
1265
1266                 // FIXME select last feed doesn't work when only unread feeds are visible
1267
1268                 if (direction == "prev") {
1269                         for (i = list.childNodes.length-1; i >= 0; i--) {
1270                                 var child = list.childNodes[i];
1271                                 if (child.id == "feedCatHolder" && Element.visible(child)) {
1272                                         if (child.firstChild) {
1273                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
1274                                                 if (cr) return cr;
1275                                         }
1276                                 } else if (child.id.match("FEEDR-")) {
1277
1278                                         if (getInitParam("hide_read_feeds") == 1) {
1279                                                 if (child.className != "feed") {
1280 //                                                      alert(child.className);
1281                                                         return child.id.replace('FEEDR-', '');
1282                                                 }
1283                                         } else {
1284                                                         return child.id.replace('FEEDR-', '');
1285                                         }
1286                                 }
1287                         }
1288                 }
1289         } else {
1290
1291                 var feed = list.ownerDocument.getElementById("FEEDR-" + id);
1292
1293                 if (getInitParam("hide_read_feeds") == 1) {
1294                         unread_only = true;
1295                 }
1296
1297                 if (direction == "next") {
1298
1299                         var e = feed;
1300
1301                         while (e) {
1302
1303                                 if (e.nextSibling) {
1304
1305                                         e = e.nextSibling;
1306
1307                                 } else if (e.parentNode.parentNode.nextSibling) {
1308
1309                                         var this_cat = e.parentNode.parentNode;
1310
1311                                         e = false;
1312
1313                                         if (this_cat && this_cat.nextSibling) {
1314                                                 while (!e && this_cat.nextSibling) {
1315                                                         this_cat = this_cat.nextSibling;
1316                                                         if (this_cat.id == "feedCatHolder") {
1317                                                                 e = this_cat.firstChild.firstChild;
1318                                                         }
1319                                                 }
1320                                         }
1321
1322                                 } else {
1323                                         e = false;
1324                            }
1325
1326                                 if (e) {
1327                                         if (!unread_only || (unread_only && e.className != "feed" &&
1328                                                         e.className.match("feed")))     {
1329                                                 if (e.parentNode.parentNode &&
1330                                                         Element.visible(e.parentNode.parentNode)) {
1331                                                         return e.id.replace("FEEDR-", "");
1332                                                 }
1333                                         }
1334                                 }
1335                         }
1336
1337                 } else if (direction == "prev") {
1338
1339                         var e = feed;
1340
1341                         while (e) {
1342
1343                                 if (e.previousSibling) {
1344
1345                                         e = e.previousSibling;
1346
1347                                 } else if (e.parentNode.parentNode.previousSibling) {
1348
1349                                         var this_cat = e.parentNode.parentNode;
1350
1351                                         e = false;
1352
1353                                         if (this_cat && this_cat.previousSibling) {
1354                                                 while (!e && this_cat.previousSibling) {
1355                                                         this_cat = this_cat.previousSibling;
1356                                                         if (this_cat.id == "feedCatHolder") {
1357                                                                 e = this_cat.firstChild.lastChild;
1358                                                         }
1359                                                 }
1360                                         }
1361
1362                                 } else {
1363                                         e = false;
1364                            }
1365
1366                                 if (e) {
1367                                         if (!unread_only || (unread_only && e.className != "feed" &&
1368                                                         e.className.match("feed")))     {
1369                                                 if (e.parentNode.parentNode &&
1370                                                         Element.visible(e.parentNode.parentNode)) {
1371                                                         return e.id.replace("FEEDR-", "");
1372                                                 }
1373                                         }
1374                                 }
1375                         }
1376                 }
1377         } */
1378 }
1379
1380 function showBlockElement(id, h_id) {
1381         var elem = document.getElementById(id);
1382
1383         if (elem) {
1384                 elem.style.display = "block";
1385
1386                 if (h_id) {
1387                         elem = document.getElementById(h_id);
1388                         if (elem) {
1389                                 elem.style.display = "none";
1390                         }
1391                 }
1392         } else {
1393                 alert("[showBlockElement] can't find element with id " + id);
1394         }
1395 }
1396
1397 function appearBlockElement_afh(effect) {
1398
1399 }
1400
1401 function checkboxToggleElement(elem, id) {
1402         if (elem.checked) {
1403                 Effect.SlideDown(id, {duration : 0.5});
1404         } else {
1405                 Effect.SlideUp(id, {duration : 0.5});
1406         }
1407 }
1408
1409 function appearBlockElement(id, h_id) {
1410
1411         try {
1412                 Effect.Fade(h_id);
1413                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1414         } catch (e) {
1415                 exception_error("appearBlockElement", e);
1416         }
1417
1418 }
1419
1420
1421 function hideParentElement(e) {
1422         e.parentNode.style.display = "none";
1423 }
1424
1425 function dropboxSelect(e, v) {
1426         for (i = 0; i < e.length; i++) {
1427                 if (e[i].value == v) {
1428                         e.selectedIndex = i;
1429                         break;
1430                 }
1431         }
1432 }
1433
1434 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1435 // bugfixed just a little bit :-)
1436 function getURLParam(strParamName){
1437   var strReturn = "";
1438   var strHref = window.location.href;
1439
1440   if (strHref.indexOf("#") == strHref.length-1) {
1441                 strHref = strHref.substring(0, strHref.length-1);
1442   }
1443
1444   if ( strHref.indexOf("?") > -1 ){
1445     var strQueryString = strHref.substr(strHref.indexOf("?"));
1446     var aQueryString = strQueryString.split("&");
1447     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1448       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1449         var aParam = aQueryString[iParam].split("=");
1450         strReturn = aParam[1];
1451         break;
1452       }
1453     }
1454   }
1455   return strReturn;
1456 }
1457
1458 function leading_zero(p) {
1459         var s = String(p);
1460         if (s.length == 1) s = "0" + s;
1461         return s;
1462 }
1463
1464 function closeInfoBox(cleanup) {
1465
1466         if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1467                 var overlay = document.getElementById("dialog_overlay");
1468                 if (overlay) {
1469                         overlay.style.display = "none";
1470                 }
1471         }
1472
1473         var box = document.getElementById('infoBox');
1474         var shadow = document.getElementById('infoBoxShadow');
1475
1476         if (shadow) {
1477                 shadow.style.display = "none";
1478         } else if (box) {
1479                 box.style.display = "none";
1480         }
1481
1482         if (cleanup) box.innerHTML = "&nbsp;";
1483
1484         enableHotkeys();
1485
1486         return false;
1487 }
1488
1489
1490 function displayDlg(id, param) {
1491
1492         if (!xmlhttp_ready(xmlhttp)) {
1493                 printLockingError();
1494                 return
1495         }
1496
1497         notify_progress("Loading, please wait...", true);
1498
1499         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1500                 param_escape(id) + "&param=" + param_escape(param), true);
1501         xmlhttp.onreadystatechange=infobox_callback;
1502         xmlhttp.send(null);
1503
1504         disableHotkeys();
1505
1506         return false;
1507 }
1508
1509 function infobox_submit_callback() {
1510         if (xmlhttp.readyState == 4) {
1511                 closeInfoBox();
1512
1513                 try {
1514                         // called from prefs, reload tab
1515                         if (active_tab) {
1516                                 selectTab(active_tab, false);
1517                         }
1518                 } catch (e) { }
1519
1520                 if (xmlhttp.responseText) {
1521                         notify_info(xmlhttp.responseText);
1522                 }
1523
1524         }
1525 }
1526
1527 function infobox_callback() {
1528         if (xmlhttp.readyState == 4) {
1529
1530                 try {
1531
1532                         if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1533                                 var overlay = document.getElementById("dialog_overlay");
1534                                 if (overlay) {
1535                                         overlay.style.display = "block";
1536                                 }
1537                         }
1538
1539                         var box = document.getElementById('infoBox');
1540                         var shadow = document.getElementById('infoBoxShadow');
1541                         if (box) {
1542
1543 /*                              if (!is_safari()) {
1544                                         new Draggable(shadow);
1545                                 } */
1546
1547                                 box.innerHTML=xmlhttp.responseText;
1548                                 if (shadow) {
1549                                         shadow.style.display = "block";
1550                                 } else {
1551                                         box.style.display = "block";
1552                                 }
1553                         }
1554
1555                         /* FIXME this needs to be moved out somewhere */
1556
1557                         if (document.getElementById("tags_choices")) {
1558                                 new Ajax.Autocompleter('tags_str', 'tags_choices',
1559                                         "backend.php?op=rpc&subop=completeTags",
1560                                         { tokens: ',', paramName: "search" });
1561                         }
1562
1563                         notify("");
1564                 } catch (e) {
1565                         exception_error("infobox_callback", e);
1566                 }
1567         }
1568 }
1569
1570 function helpbox_callback() {
1571         if (xmlhttp.readyState == 4) {
1572                 var box = document.getElementById('helpBox');
1573                 var shadow = document.getElementById('helpBoxShadow');
1574                 if (box) {
1575                         box.innerHTML=xmlhttp.responseText;
1576                         if (shadow) {
1577                                 shadow.style.display = "block";
1578                         } else {
1579                                 box.style.display = "block";
1580                         }
1581                 }
1582                 notify("");
1583         }
1584 }
1585
1586 function addFilter() {
1587
1588         if (!xmlhttp_ready(xmlhttp)) {
1589                 printLockingError();
1590                 return
1591         }
1592
1593         var form = document.forms['filter_add_form'];
1594         var reg_exp = form.reg_exp.value;
1595
1596         if (reg_exp == "") {
1597                 alert(__("Can't add filter: nothing to match on."));
1598                 return false;
1599         }
1600
1601         var query = Form.serialize("filter_add_form");
1602
1603         xmlhttp.open("GET", "backend.php?" + query, true);
1604         xmlhttp.onreadystatechange=infobox_submit_callback;
1605         xmlhttp.send(null);
1606
1607         return true;
1608 }
1609
1610 function toggleSubmitNotEmpty(e, submit_id) {
1611         try {
1612                 document.getElementById(submit_id).disabled = (e.value == "")
1613         } catch (e) {
1614                 exception_error("toggleSubmitNotEmpty", e);
1615         }
1616 }
1617
1618 function isValidURL(s) {
1619         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1620 }
1621
1622 function qaddFeed() {
1623
1624         if (!xmlhttp_ready(xmlhttp)) {
1625                 printLockingError();
1626                 return
1627         }
1628
1629         var form = document.forms['feed_add_form'];
1630         var feed_url = form.feed_url.value;
1631
1632         if (feed_url == "") {
1633                 alert(__("Can't subscribe: no feed URL given."));
1634                 return false;
1635         }
1636
1637         notify_progress(__("Subscribing to feed..."), true);
1638
1639         closeInfoBox();
1640
1641         var feeds_doc = document;
1642
1643 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1644
1645         var query = Form.serialize("feed_add_form");
1646
1647         debug("subscribe q: " + query);
1648
1649 /*      xmlhttp.open("GET", "backend.php?" + query, true);
1650         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1651         xmlhttp.send(null); */
1652
1653         xmlhttp.open("POST", "backend.php", true);
1654         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1655         xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
1656         xmlhttp.send(query);
1657
1658         return false;
1659 }
1660
1661 function filterCR(e, f)
1662 {
1663      var key;
1664
1665      if(window.event)
1666           key = window.event.keyCode;     //IE
1667      else
1668           key = e.which;     //firefox
1669
1670         if (key == 13) {
1671                 if (typeof f != 'undefined') {
1672                         f();
1673                         return false;
1674                 } else {
1675                         return false;
1676                 }
1677         } else {
1678                 return true;
1679         }
1680 }
1681
1682 function getMainContext() {
1683         return this.window;
1684 }
1685
1686 function getFeedsContext() {
1687         return this.window;
1688 }
1689
1690 function getContentContext() {
1691         return this.window;
1692 }
1693
1694 function getHeadlinesContext() {
1695         return this.window;
1696 }
1697
1698 var debug_last_class = "even";
1699
1700 function debug(msg) {
1701
1702         if (debug_last_class == "even") {
1703                 debug_last_class = "odd";
1704         } else {
1705                 debug_last_class = "even";
1706         }
1707
1708         var c = document.getElementById('debug_output');
1709         if (c && c.style.display == "block") {
1710                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1711                         c.removeChild(c.lastChild);
1712                 }
1713
1714                 var d = new Date();
1715                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1716                         ":" + leading_zero(d.getSeconds());
1717                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1718                         msg + "</li>" + c.innerHTML;
1719         }
1720 }
1721
1722 function getInitParam(key) {
1723         return init_params[key];
1724 }
1725
1726 function storeInitParam(key, value) {
1727         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1728         init_params[key] = value;
1729 }
1730
1731 function fatalError(code, message) {
1732         try {
1733
1734                 if (code == 6) {
1735                         window.location.href = "tt-rss.php";
1736                 } else if (code == 5) {
1737                         window.location.href = "update.php";
1738                 } else {
1739                         var fe = document.getElementById("fatal_error");
1740                         var fc = document.getElementById("fatal_error_msg");
1741
1742                         if (message == "") message = "Unknown error";
1743
1744                         fc.innerHTML = "<img src='images/sign_excl.png'> " + message + " (Code " + code + ")";
1745
1746                         fe.style.display = "block";
1747                 }
1748
1749         } catch (e) {
1750                 exception_error("fatalError", e);
1751         }
1752 }
1753
1754 function getFeedName(id, is_cat) {
1755         var d = getFeedsContext().document;
1756
1757         var e;
1758
1759         if (is_cat) {
1760                 e = d.getElementById("FCATN-" + id);
1761         } else {
1762                 e = d.getElementById("FEEDN-" + id);
1763         }
1764         if (e) {
1765                 return e.innerHTML.stripTags();
1766         } else {
1767                 return null;
1768         }
1769 }
1770
1771 function viewContentUrl(url) {
1772         getContentContext().location = url;
1773 }
1774
1775 function filterDlgCheckAction(sender) {
1776
1777         try {
1778
1779                 var action = sender[sender.selectedIndex].value;
1780
1781                 var form = document.forms["filter_add_form"];
1782
1783                 if (!form) {
1784                         form = document.forms["filter_edit_form"];
1785                 }
1786
1787                 if (!form) {
1788                         debug("filterDlgCheckAction: can't find form!");
1789                         return;
1790                 }
1791
1792                 var action_param = form.action_param;
1793
1794                 if (!action_param) {
1795                         debug("filterDlgCheckAction: can't find action param!");
1796                         return;
1797                 }
1798
1799                 // if selected action supports parameters, enable params field
1800                 if (action == 4) {
1801                         action_param.disabled = false;
1802                 } else {
1803                         action_param.disabled = true;
1804                 }
1805
1806         } catch (e) {
1807                 exception_error(e, "filterDlgCheckAction");
1808         }
1809
1810 }
1811
1812 function explainError(code) {
1813         return displayDlg("explainError", code);
1814 }
1815
1816 function logoutUser() {
1817         try {
1818                 if (xmlhttp_ready(xmlhttp_rpc)) {
1819
1820                         notify_progress("Logging out, please wait...", true);
1821
1822                         xmlhttp_rpc.open("GET", "backend.php?op=rpc&subop=logout", true);
1823                         xmlhttp_rpc.onreadystatechange=logout_callback;
1824                         xmlhttp_rpc.send(null);
1825                 } else {
1826                         printLockingError();
1827                 }
1828         } catch (e) {
1829                 exception_error("logoutUser", e);
1830         }
1831 }
1832
1833 // this only searches loaded headlines list, not in CDM
1834 function getRelativePostIds(id) {
1835
1836         debug("getRelativePostIds: " + id);
1837
1838         var ids = new Array();
1839         var container = document.getElementById("headlinesList");
1840
1841         if (container) {
1842                 var rows = container.rows;
1843
1844                 for (var i = 0; i < rows.length; i++) {
1845                         var r_id = rows[i].id.replace("RROW-", "");
1846
1847                         if (r_id == id) {
1848                                 if (i > 0) ids.push(rows[i-1].id.replace("RROW-", ""));
1849                                 if (i > 1) ids.push(rows[i-2].id.replace("RROW-", ""));
1850                                 if (i > 2) ids.push(rows[i-3].id.replace("RROW-", ""));
1851
1852                                 if (i < rows.length-1) ids.push(rows[i+1].id.replace("RROW-", ""));
1853                                 if (i < rows.length-2) ids.push(rows[i+2].id.replace("RROW-", ""));
1854                                 if (i < rows.length-3) ids.push(rows[i+3].id.replace("RROW-", ""));
1855
1856                                 return ids;
1857                         }
1858                 }
1859         }
1860
1861         return false;
1862 }
1863
1864 function openArticleInNewWindow(id) {
1865         try {
1866
1867                 if (!xmlhttp_ready(xmlhttp_rpc)) {
1868                         printLockingError();
1869                         return
1870                 }
1871
1872                 debug("openArticleInNewWindow: " + id);
1873
1874                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1875
1876                 debug(query);
1877
1878                 xmlhttp_rpc.open("GET", query, true);
1879                 xmlhttp_rpc.onreadystatechange=open_article_callback;
1880                 xmlhttp_rpc.send(null);
1881
1882         } catch (e) {
1883                 exception_error("openArticleInNewWindow", e);
1884         }
1885 }
1886
1887 /* http://textsnippets.com/posts/show/835 */
1888
1889 Position.GetWindowSize = function(w) {
1890         w = w ? w : window;
1891         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1892         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1893         return [width, height]
1894 }
1895
1896 /* http://textsnippets.com/posts/show/836 */
1897
1898 Position.Center = function(element, parent) {
1899         var w, h, pw, ph;
1900         var d = Element.getDimensions(element);
1901         w = d.width;
1902         h = d.height;
1903         Position.prepare();
1904         if (!parent) {
1905                 var ws = Position.GetWindowSize();
1906                 pw = ws[0];
1907                 ph = ws[1];
1908         } else {
1909                 pw = parent.offsetWidth;
1910                 ph = parent.offsetHeight;
1911         }
1912         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1913         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1914 }
1915
1916 function labeltest_callback() {
1917         var container = document.getElementById('label_test_result');
1918         if (xmlhttp.readyState == 4) {
1919
1920                 container.innerHTML=xmlhttp.responseText;
1921                 if (!Element.visible(container)) {
1922                         Effect.SlideDown(container, { duration : 0.5 });
1923                 }
1924                 notify("");
1925         }
1926 }
1927
1928 function labelTest() {
1929
1930         var container = document.getElementById('label_test_result');
1931
1932         var form = document.forms['label_edit_form'];
1933
1934         var sql_exp = form.sql_exp.value;
1935         var description = form.description.value;
1936
1937         notify_progress("Loading, please wait...");
1938
1939         xmlhttp.open("GET", "backend.php?op=pref-labels&subop=test&expr=" +
1940                 param_escape(sql_exp) + "&descr=" + param_escape(description), true);
1941
1942         xmlhttp.onreadystatechange=labeltest_callback;
1943         xmlhttp.send(null);
1944
1945         return false;
1946 }
1947