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                 if (reply.firstChild && reply.firstChild.firstChild) {
 619                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 620                         reply = reply.firstChild;
 621                 }
 622
 623                 for (var l = 0; l < reply.childNodes.length; l++) {
 624                         if (!reply.childNodes[l] ||
 625                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 626                                 // where did this come from?
 627                                 continue;
 628                         }
 629
 630                         var id = reply.childNodes[l].getAttribute("id");
 631                         var t = reply.childNodes[l].getAttribute("type");
 632                         var ctr = reply.childNodes[l].getAttribute("counter");
 633                         var error = reply.childNodes[l].getAttribute("error");
 634                         var has_img = reply.childNodes[l].getAttribute("hi");
 635                         var updated = reply.childNodes[l].getAttribute("updated");
 636
 637                         if (id == "global-unread") {
 638                                 global_unread = ctr;
 639                                 updateTitle();
 640                                 continue;
 641                         }
 642
 643                         if (id == "subscribed-feeds") {
 644                                 feeds_found = ctr;
 645                                 continue;
 646                         }
 647
 648                         if (t == "category") {
 649                                 var catctr = document.getElementById("FCATCTR-" + id);
 650                                 if (catctr) {
 651                                         catctr.innerHTML = "(" + ctr + ")";
 652                                         if (ctr > 0) {
 653                                                 catctr.className = "catCtrHasUnread";
 654                                         } else {
 655                                                 catctr.className = "catCtrNoUnread";
 656                                         }
 657                                 }
 658                                 continue;
 659                         }
 660
 661                         var feedctr = document.getElementById("FEEDCTR-" + id);
 662                         var feedu = document.getElementById("FEEDU-" + id);
 663                         var feedr = document.getElementById("FEEDR-" + id);
 664                         var feed_img = document.getElementById("FIMG-" + id);
 665                         var feedlink = document.getElementById("FEEDL-" + id);
 666                         var feedupd = document.getElementById("FLUPD-" + id);
 667
 668                         if (updated && feedlink) {
 669                                 if (error) {
 670                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 671                                 } else {
 672                                         feedlink.title = "Updated: " + updated;
 673                                 }
 674                         }
 675
 676                         if (updated && feedupd) {
 677                                 if (error) {
 678                                         feedupd.innerHTML = updated + " (Error)";
 679                                 } else {
 680                                         feedupd.innerHTML = updated;
 681                                 }
 682                         }
 683
 684                         if (has_img && feed_img && !is_msie()) {
 685                                 if (!feed_img.src.match(id + ".ico")) {
 686                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 687                                 }
 688                         }
 689
 690                         if (feedctr && feedu && feedr) {
 691
 692                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 693                                         viewCurrentFeed();
 694                                 }
 695
 696                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 697
 698                                 feedu.innerHTML = ctr;
 699
 700                                 if (error) {
 701                                         feedr.className = feedr.className.replace("feed", "error");
 702                                 } else if (id > 0) {
 703                                         feedr.className = feedr.className.replace("error", "feed");
 704                                 }
 705
 706                                 if (ctr > 0) {
 707                                         feedctr.className = "odd";
 708                                         if (!feedr.className.match("Unread")) {
 709                                                 var is_selected = feedr.className.match("Selected");
 710
 711                                                 feedr.className = feedr.className.replace("Selected", "");
 712                                                 feedr.className = feedr.className.replace("Unread", "");
 713
 714                                                 feedr.className = feedr.className + "Unread";
 715
 716                                                 if (is_selected) {
 717                                                         feedr.className = feedr.className + "Selected";
 718                                                 }
 719
 720                                         }
 721
 722                                         if (row_needs_hl) {
 723                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5"});
 724                                         }
 725                                 } else {
 726                                         feedctr.className = "invisible";
 727                                         feedr.className = feedr.className.replace("Unread", "");
 728                                 }
 729                         }
 730                 }
 731
 732                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 733
 734                 var feeds_stored = number_of_feeds;
 735
 736                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 737
 738                 if (feeds_stored != feeds_found) {
 739                         number_of_feeds = feeds_found;
 740
 741                         if (feeds_stored != 0) {
 742                                 debug("Subscribed feed number changed, refreshing feedlist");
 743                                 setTimeout('updateFeedList(false, false)', 50);
 744                         }
 745                 }
 746
 747         } catch (e) {
 748                 exception_error("parse_counters", e);
 749         }
 750 }
 751
 752 function parse_counters_reply(xmlhttp, scheduled_call) {
 753
 754         if (!xmlhttp.responseXML) {
 755                 notify_error("Backend did not return valid XML", true);
 756                 return;
 757         }
 758
 759         var reply = xmlhttp.responseXML.firstChild;
 760
 761         if (!reply) {
 762                 notify_error("Backend did not return expected XML object", true);
 763                 updateTitle("");
 764                 return;
 765         }
 766
 767         var error_code = false;
 768         var error_msg = false;
 769
 770         if (reply.firstChild) {
 771                 error_code = reply.firstChild.getAttribute("error-code");
 772                 error_msg = reply.firstChild.getAttribute("error-msg");
 773         }
 774
 775         if (!error_code) {
 776                 error_code = reply.getAttribute("error-code");
 777                 error_msg = reply.getAttribute("error-msg");
 778         }
 779
 780         if (error_code && error_code != 0) {
 781                 debug("refetch_callback: got error code " + error_code);
 782                 return fatalError(error_code, error_msg);
 783         }
 784
 785         var counters = reply.firstChild;
 786
 787         parse_counters(counters, scheduled_call);
 788
 789         var runtime_info = counters.nextSibling;
 790
 791         parse_runtime_info(runtime_info);
 792
 793         if (getInitParam("feeds_sort_by_unread") == 1) {
 794                         resort_feedlist();
 795         }
 796
 797         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 798
 799 }
 800
 801 function all_counters_callback() {
 802         if (xmlhttp_rpc.readyState == 4) {
 803                 try {
 804 /*                      if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 805                                 debug("[all_counters_callback] backend did not return valid XML");
 806                                 return;
 807                         }
 808
 809                         debug("in all_counters_callback : " + xmlhttp_rpc.responseXML);
 810
 811                         var reply = xmlhttp_rpc.responseXML.firstChild;
 812
 813                         var counters = reply.firstChild;
 814
 815                         parse_counters(counters);
 816
 817                         var runtime = counters.nextSibling;
 818
 819                         if (runtime) {
 820                                 parse_runtime_info(runtime);
 821                         }
 822
 823                         if (getInitParam("feeds_sort_by_unread") == 1) {
 824                                 resort_feedlist();
 825                         }
 826
 827                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1); */
 828
 829                         debug("in all_counters_callback");
 830
 831                         parse_counters_reply(xmlhttp_rpc);
 832
 833                 } catch (e) {
 834                         exception_error("all_counters_callback", e);
 835                 }
 836         }
 837 }
 838
 839 function get_feed_entry_unread(doc, elem) {
 840
 841         var id = elem.id.replace("FEEDR-", "");
 842
 843         if (id <= 0) {
 844                 return -1;
 845         }
 846
 847         try {
 848                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 849         } catch (e) {
 850                 return -1;
 851         }
 852 }
 853
 854 function resort_category(doc, node) {
 855         debug("resort_category: " + node);
 856
 857         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 858                 for (i = 0; i < node.childNodes.length; i++) {
 859                         if (node.childNodes[i].nodeName != "LI") { continue; }
 860
 861                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 862                                 continue;
 863                         }
 864
 865                         for (j = i+1; j < node.childNodes.length; j++) {
 866                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 867
 868                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 869                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 870
 871                                 if (cur_val > tmp_val) {
 872                                         tempnode_i = node.childNodes[i].cloneNode(true);
 873                                         tempnode_j = node.childNodes[j].cloneNode(true);
 874                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 875                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 876                                 }
 877                         }
 878
 879                 }
 880         }
 881
 882 }
 883
 884 function resort_feedlist() {
 885         debug("resort_feedlist");
 886
 887         var fd = document;
 888
 889         if (fd.getElementById("feedCatHolder")) {
 890
 891                 var feeds = fd.getElementById("feedList");
 892                 var child = feeds.firstChild;
 893
 894                 while (child) {
 895
 896                         if (child.id == "feedCatHolder") {
 897                                 resort_category(fd, child.firstChild);
 898                         }
 899
 900                         child = child.nextSibling;
 901                 }
 902
 903         } else {
 904                 resort_category(fd, fd.getElementById("feedList"));
 905         }
 906 }
 907
 908 function update_all_counters(feed) {
 909         if (xmlhttp_ready(xmlhttp_rpc)) {
 910                 var query = "backend.php?op=rpc&subop=getAllCounters";
 911
 912                 if (feed > 0) {
 913                         query = query + "&aid=" + feed;
 914                 }
 915
 916                 if (tagsAreDisplayed()) {
 917                         query = query + "&omode=lt";
 918                 } else {
 919                         query = query + "&omode=flc";
 920                 }
 921
 922                 debug("update_all_counters QUERY: " + query);
 923
 924                 var date = new Date();
 925                 var timestamp = Math.round(date.getTime() / 1000);
 926                 query = query + "&ts=" + timestamp
 927
 928                 xmlhttp_rpc.open("GET", query, true);
 929                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 930                 xmlhttp_rpc.send(null);
 931         }
 932 }
 933
 934 function popupHelp(tid) {
 935         var w = window.open("backend.php?op=help&tid=" + tid,
 936                 "Popup Help",
 937                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 938 }
 939
 940 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 941   * * @author Sundar Dorai-Raj
 942   * * Email: sdoraira@vt.edu
 943   * * This program is free software; you can redistribute it and/or
 944   * * modify it under the terms of the GNU General Public License
 945   * * as published by the Free Software Foundation; either version 2
 946   * * of the License, or (at your option) any later version,
 947   * * provided that any use properly credits the author.
 948   * * This program is distributed in the hope that it will be useful,
 949   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 950   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 951   * * GNU General Public License for more details at http://www.gnu.org * * */
 952
 953   var numbers=".0123456789";
 954   function isNumeric(x) {
 955     // is x a String or a character?
 956     if(x.length>1) {
 957       // remove negative sign
 958       x=Math.abs(x)+"";
 959       for(j=0;j<x.length;j++) {
 960         // call isNumeric recursively for each character
 961         number=isNumeric(x.substring(j,j+1));
 962         if(!number) return number;
 963       }
 964       return number;
 965     }
 966     else {
 967       // if x is number return true
 968       if(numbers.indexOf(x)>=0) return true;
 969       return false;
 970     }
 971   }
 972
 973
 974 function hideOrShowFeeds(doc, hide) {
 975
 976         debug("hideOrShowFeeds: " + doc + ", " + hide);
 977
 978         var fd = document;
 979
 980         var list = fd.getElementById("feedList");
 981
 982         if (fd.getElementById("feedCatHolder")) {
 983
 984                 var feeds = fd.getElementById("feedList");
 985                 var child = feeds.firstChild;
 986
 987                 while (child) {
 988
 989                         if (child.id == "feedCatHolder") {
 990                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 991                         }
 992
 993                         child = child.nextSibling;
 994                 }
 995
 996         } else {
 997                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 998         }
 999 }
1000
1001 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
1002
1003 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
1004
1005         var cat_unread = 0;
1006
1007         if (!node) {
1008                 debug("hideOrShowFeeds: passed node is null, aborting");
1009                 return;
1010         }
1011
1012         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
1013                 for (i = 0; i < node.childNodes.length; i++) {
1014                         if (node.childNodes[i].nodeName != "LI") { continue; }
1015
1016                         if (node.childNodes[i].style != undefined) {
1017
1018                                 var has_unread = (node.childNodes[i].className != "feed" &&
1019                                         node.childNodes[i].className != "label" &&
1020                                         node.childNodes[i].className != "virt" &&
1021                                         node.childNodes[i].className != "tag");
1022
1023         //                      debug(node.childNodes[i].id + " --> " + has_unread);
1024
1025                                 if (hide && !has_unread) {
1026                                         //node.childNodes[i].style.display = "none";
1027                                         Effect.Fade(node.childNodes[i], {duration : 0.3});
1028                                 }
1029
1030                                 if (!hide) {
1031                                         node.childNodes[i].style.display = "list-item";
1032                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
1033                                 }
1034
1035                                 if (has_unread) {
1036                                         node.childNodes[i].style.display = "list-item";
1037                                         cat_unread++;
1038                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
1039                                         //Effect.Highlight(node.childNodes[i]);
1040                                 }
1041                         }
1042                 }
1043         }
1044
1045         if (cat_unread == 0) {
1046                 if (cat_node.style == undefined) {
1047                         debug("ERROR: supplied cat_node " + cat_node +
1048                                 " has no styles. WTF?");
1049                         return;
1050                 }
1051                 if (hide) {
1052                         //cat_node.style.display = "none";
1053                         Effect.Fade(cat_node, {duration : 0.3});
1054                 } else {
1055                         cat_node.style.display = "list-item";
1056                 }
1057         } else {
1058                 try {
1059                         cat_node.style.display = "list-item";
1060                 } catch (e) {
1061                         debug(e);
1062                 }
1063         }
1064
1065 //      debug("unread for category: " + cat_unread);
1066 }
1067
1068 function selectTableRow(r, do_select) {
1069         r.className = r.className.replace("Selected", "");
1070
1071         if (do_select) {
1072                 r.className = r.className + "Selected";
1073         }
1074 }
1075
1076 function selectTableRowById(elem_id, check_id, do_select) {
1077
1078         try {
1079
1080                 var row = document.getElementById(elem_id);
1081
1082                 if (row) {
1083                         selectTableRow(row, do_select);
1084                 }
1085
1086                 var check = document.getElementById(check_id);
1087
1088                 if (check) {
1089                         check.checked = do_select;
1090                 }
1091         } catch (e) {
1092                 exception_error("selectTableRowById", e);
1093         }
1094 }
1095
1096 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
1097         classcheck, reset_others) {
1098
1099         var content = document.getElementById(content_id);
1100
1101         if (!content) {
1102                 alert("[selectTableRows] Element " + content_id + " not found.");
1103                 return;
1104         }
1105
1106         for (i = 0; i < content.rows.length; i++) {
1107                 if (!classcheck || content.rows[i].className.match(classcheck)) {
1108
1109                         if (content.rows[i].id.match(prefix)) {
1110                                 selectTableRow(content.rows[i], do_select);
1111
1112                                 var row_id = content.rows[i].id.replace(prefix, "");
1113                                 var check = document.getElementById(check_prefix + row_id);
1114
1115                                 if (check) {
1116                                         check.checked = do_select;
1117                                 }
1118                         } else if (reset_others) {
1119                                 selectTableRow(content.rows[i], false);
1120
1121                                 var row_id = content.rows[i].id.replace(prefix, "");
1122                                 var check = document.getElementById(check_prefix + row_id);
1123
1124                                 if (check) {
1125                                         check.checked = false;
1126                                 }
1127
1128                         }
1129                 } else if (reset_others) {
1130                         selectTableRow(content.rows[i], false);
1131
1132                         var row_id = content.rows[i].id.replace(prefix, "");
1133                         var check = document.getElementById(check_prefix + row_id);
1134
1135                         if (check) {
1136                                 check.checked = false;
1137                         }
1138
1139                 }
1140         }
1141 }
1142
1143 function getSelectedTableRowIds(content_id, prefix) {
1144
1145         var content = document.getElementById(content_id);
1146
1147         if (!content) {
1148                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
1149                 return;
1150         }
1151
1152         var sel_rows = new Array();
1153
1154         for (i = 0; i < content.rows.length; i++) {
1155                 if (content.rows[i].id.match(prefix) &&
1156                                 content.rows[i].className.match("Selected")) {
1157
1158                         var row_id = content.rows[i].id.replace(prefix + "-", "");
1159                         sel_rows.push(row_id);
1160                 }
1161         }
1162
1163         return sel_rows;
1164
1165 }
1166
1167 function toggleSelectRowById(sender, id) {
1168         var row = document.getElementById(id);
1169
1170         if (sender.checked) {
1171                 if (!row.className.match("Selected")) {
1172                         row.className = row.className + "Selected";
1173                 }
1174         } else {
1175                 if (row.className.match("Selected")) {
1176                         row.className = row.className.replace("Selected", "");
1177                 }
1178         }
1179 }
1180
1181 function toggleSelectListRow(sender) {
1182         var parent_row = sender.parentNode;
1183
1184         if (sender.checked) {
1185                 if (!parent_row.className.match("Selected")) {
1186                         parent_row.className = parent_row.className + "Selected";
1187                 }
1188         } else {
1189                 if (parent_row.className.match("Selected")) {
1190                         parent_row.className = parent_row.className.replace("Selected", "");
1191                 }
1192         }
1193 }
1194
1195 function tSR(sender) {
1196         return toggleSelectRow(sender);
1197 }
1198
1199 function toggleSelectRow(sender) {
1200         var parent_row = sender.parentNode.parentNode;
1201
1202         if (sender.checked) {
1203                 if (!parent_row.className.match("Selected")) {
1204                         parent_row.className = parent_row.className + "Selected";
1205                 }
1206         } else {
1207                 if (parent_row.className.match("Selected")) {
1208                         parent_row.className = parent_row.className.replace("Selected", "");
1209                 }
1210         }
1211 }
1212
1213 function openExternalUrl(url) {
1214         var w = window.open(url);
1215 }
1216
1217 function getRelativeFeedId(list, id, direction, unread_only) {
1218         var rows = list.getElementsByTagName("LI");
1219         var feeds = new Array();
1220
1221         for (var i = 0; i < rows.length; i++) {
1222                 if (rows[i].id.match("FEEDR-")) {
1223
1224                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1225
1226                                 if (!unread_only ||
1227                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1228                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1229                                 }
1230                         }
1231                 }
1232         }
1233
1234         if (!id) {
1235                 if (direction == "next") {
1236                         return feeds.shift();
1237                 } else {
1238                         return feeds.pop();
1239                 }
1240         } else {
1241                 if (direction == "next") {
1242                         var idx = feeds.indexOf(id);
1243                         if (idx != -1 && idx < feeds.length) {
1244                                 return feeds[idx+1];
1245                         } else {
1246                                 return getRelativeFeedId(list, false, direction, unread_only);
1247                         }
1248                 } else {
1249                         var idx = feeds.indexOf(id);
1250                         if (idx > 0) {
1251                                 return feeds[idx-1];
1252                         } else {
1253                                 return getRelativeFeedId(list, false, direction, unread_only);
1254                         }
1255                 }
1256
1257         }
1258
1259 /*      if (!id) {
1260                 if (direction == "next") {
1261                         for (i = 0; i < list.childNodes.length; i++) {
1262                                 var child = list.childNodes[i];
1263                                 if (child.id && child.id == "feedCatHolder") {
1264                                         if (child.lastChild) {
1265                                                 var cr = getRelativeFeedId(child.firstChild, id, direction, unread_only);
1266                                                 if (cr) return cr;
1267                                         }
1268                                 } else if (child.id && child.id.match("FEEDR-")) {
1269                                         return child.id.replace('FEEDR-', '');
1270                                 }
1271                         }
1272                 }
1273
1274                 // FIXME select last feed doesn't work when only unread feeds are visible
1275
1276                 if (direction == "prev") {
1277                         for (i = list.childNodes.length-1; i >= 0; i--) {
1278                                 var child = list.childNodes[i];
1279                                 if (child.id == "feedCatHolder" && Element.visible(child)) {
1280                                         if (child.firstChild) {
1281                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
1282                                                 if (cr) return cr;
1283                                         }
1284                                 } else if (child.id.match("FEEDR-")) {
1285
1286                                         if (getInitParam("hide_read_feeds") == 1) {
1287                                                 if (child.className != "feed") {
1288 //                                                      alert(child.className);
1289                                                         return child.id.replace('FEEDR-', '');
1290                                                 }
1291                                         } else {
1292                                                         return child.id.replace('FEEDR-', '');
1293                                         }
1294                                 }
1295                         }
1296                 }
1297         } else {
1298
1299                 var feed = list.ownerDocument.getElementById("FEEDR-" + id);
1300
1301                 if (getInitParam("hide_read_feeds") == 1) {
1302                         unread_only = true;
1303                 }
1304
1305                 if (direction == "next") {
1306
1307                         var e = feed;
1308
1309                         while (e) {
1310
1311                                 if (e.nextSibling) {
1312
1313                                         e = e.nextSibling;
1314
1315                                 } else if (e.parentNode.parentNode.nextSibling) {
1316
1317                                         var this_cat = e.parentNode.parentNode;
1318
1319                                         e = false;
1320
1321                                         if (this_cat && this_cat.nextSibling) {
1322                                                 while (!e && this_cat.nextSibling) {
1323                                                         this_cat = this_cat.nextSibling;
1324                                                         if (this_cat.id == "feedCatHolder") {
1325                                                                 e = this_cat.firstChild.firstChild;
1326                                                         }
1327                                                 }
1328                                         }
1329
1330                                 } else {
1331                                         e = false;
1332                            }
1333
1334                                 if (e) {
1335                                         if (!unread_only || (unread_only && e.className != "feed" &&
1336                                                         e.className.match("feed")))     {
1337                                                 if (e.parentNode.parentNode &&
1338                                                         Element.visible(e.parentNode.parentNode)) {
1339                                                         return e.id.replace("FEEDR-", "");
1340                                                 }
1341                                         }
1342                                 }
1343                         }
1344
1345                 } else if (direction == "prev") {
1346
1347                         var e = feed;
1348
1349                         while (e) {
1350
1351                                 if (e.previousSibling) {
1352
1353                                         e = e.previousSibling;
1354
1355                                 } else if (e.parentNode.parentNode.previousSibling) {
1356
1357                                         var this_cat = e.parentNode.parentNode;
1358
1359                                         e = false;
1360
1361                                         if (this_cat && this_cat.previousSibling) {
1362                                                 while (!e && this_cat.previousSibling) {
1363                                                         this_cat = this_cat.previousSibling;
1364                                                         if (this_cat.id == "feedCatHolder") {
1365                                                                 e = this_cat.firstChild.lastChild;
1366                                                         }
1367                                                 }
1368                                         }
1369
1370                                 } else {
1371                                         e = false;
1372                            }
1373
1374                                 if (e) {
1375                                         if (!unread_only || (unread_only && e.className != "feed" &&
1376                                                         e.className.match("feed")))     {
1377                                                 if (e.parentNode.parentNode &&
1378                                                         Element.visible(e.parentNode.parentNode)) {
1379                                                         return e.id.replace("FEEDR-", "");
1380                                                 }
1381                                         }
1382                                 }
1383                         }
1384                 }
1385         } */
1386 }
1387
1388 function showBlockElement(id, h_id) {
1389         var elem = document.getElementById(id);
1390
1391         if (elem) {
1392                 elem.style.display = "block";
1393
1394                 if (h_id) {
1395                         elem = document.getElementById(h_id);
1396                         if (elem) {
1397                                 elem.style.display = "none";
1398                         }
1399                 }
1400         } else {
1401                 alert("[showBlockElement] can't find element with id " + id);
1402         }
1403 }
1404
1405 function appearBlockElement_afh(effect) {
1406
1407 }
1408
1409 function checkboxToggleElement(elem, id) {
1410         if (elem.checked) {
1411                 Effect.SlideDown(id, {duration : 0.5});
1412         } else {
1413                 Effect.SlideUp(id, {duration : 0.5});
1414         }
1415 }
1416
1417 function appearBlockElement(id, h_id) {
1418
1419         try {
1420                 Effect.Fade(h_id);
1421                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1422         } catch (e) {
1423                 exception_error("appearBlockElement", e);
1424         }
1425
1426 }
1427
1428
1429 function hideParentElement(e) {
1430         e.parentNode.style.display = "none";
1431 }
1432
1433 function dropboxSelect(e, v) {
1434         for (i = 0; i < e.length; i++) {
1435                 if (e[i].value == v) {
1436                         e.selectedIndex = i;
1437                         break;
1438                 }
1439         }
1440 }
1441
1442 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1443 // bugfixed just a little bit :-)
1444 function getURLParam(strParamName){
1445   var strReturn = "";
1446   var strHref = window.location.href;
1447
1448   if (strHref.indexOf("#") == strHref.length-1) {
1449                 strHref = strHref.substring(0, strHref.length-1);
1450   }
1451
1452   if ( strHref.indexOf("?") > -1 ){
1453     var strQueryString = strHref.substr(strHref.indexOf("?"));
1454     var aQueryString = strQueryString.split("&");
1455     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1456       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1457         var aParam = aQueryString[iParam].split("=");
1458         strReturn = aParam[1];
1459         break;
1460       }
1461     }
1462   }
1463   return strReturn;
1464 }
1465
1466 function leading_zero(p) {
1467         var s = String(p);
1468         if (s.length == 1) s = "0" + s;
1469         return s;
1470 }
1471
1472 function closeInfoBox(cleanup) {
1473
1474         if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1475                 var overlay = document.getElementById("dialog_overlay");
1476                 if (overlay) {
1477                         overlay.style.display = "none";
1478                 }
1479         }
1480
1481         var box = document.getElementById('infoBox');
1482         var shadow = document.getElementById('infoBoxShadow');
1483
1484         if (shadow) {
1485                 shadow.style.display = "none";
1486         } else if (box) {
1487                 box.style.display = "none";
1488         }
1489
1490         if (cleanup) box.innerHTML = "&nbsp;";
1491
1492         enableHotkeys();
1493
1494         return false;
1495 }
1496
1497
1498 function displayDlg(id, param) {
1499
1500         if (!xmlhttp_ready(xmlhttp)) {
1501                 printLockingError();
1502                 return
1503         }
1504
1505         notify_progress("Loading, please wait...", true);
1506
1507         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1508                 param_escape(id) + "&param=" + param_escape(param), true);
1509         xmlhttp.onreadystatechange=infobox_callback;
1510         xmlhttp.send(null);
1511
1512         disableHotkeys();
1513
1514         return false;
1515 }
1516
1517 function infobox_submit_callback() {
1518         if (xmlhttp.readyState == 4) {
1519                 closeInfoBox();
1520
1521                 try {
1522                         // called from prefs, reload tab
1523                         if (active_tab) {
1524                                 selectTab(active_tab, false);
1525                         }
1526                 } catch (e) { }
1527
1528                 if (xmlhttp.responseText) {
1529                         notify_info(xmlhttp.responseText);
1530                 }
1531
1532         }
1533 }
1534
1535 function infobox_callback() {
1536         if (xmlhttp.readyState == 4) {
1537
1538                 try {
1539
1540                         if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1541                                 var overlay = document.getElementById("dialog_overlay");
1542                                 if (overlay) {
1543                                         overlay.style.display = "block";
1544                                 }
1545                         }
1546
1547                         var box = document.getElementById('infoBox');
1548                         var shadow = document.getElementById('infoBoxShadow');
1549                         if (box) {
1550
1551 /*                              if (!is_safari()) {
1552                                         new Draggable(shadow);
1553                                 } */
1554
1555                                 box.innerHTML=xmlhttp.responseText;
1556                                 if (shadow) {
1557                                         shadow.style.display = "block";
1558                                 } else {
1559                                         box.style.display = "block";
1560                                 }
1561                         }
1562
1563                         /* FIXME this needs to be moved out somewhere */
1564
1565                         if (document.getElementById("tags_choices")) {
1566                                 new Ajax.Autocompleter('tags_str', 'tags_choices',
1567                                         "backend.php?op=rpc&subop=completeTags",
1568                                         { tokens: ',', paramName: "search" });
1569                         }
1570
1571                         notify("");
1572                 } catch (e) {
1573                         exception_error("infobox_callback", e);
1574                 }
1575         }
1576 }
1577
1578 function helpbox_callback() {
1579         if (xmlhttp.readyState == 4) {
1580                 var box = document.getElementById('helpBox');
1581                 var shadow = document.getElementById('helpBoxShadow');
1582                 if (box) {
1583                         box.innerHTML=xmlhttp.responseText;
1584                         if (shadow) {
1585                                 shadow.style.display = "block";
1586                         } else {
1587                                 box.style.display = "block";
1588                         }
1589                 }
1590                 notify("");
1591         }
1592 }
1593
1594 function addFilter() {
1595
1596         if (!xmlhttp_ready(xmlhttp)) {
1597                 printLockingError();
1598                 return
1599         }
1600
1601         var form = document.forms['filter_add_form'];
1602         var reg_exp = form.reg_exp.value;
1603
1604         if (reg_exp == "") {
1605                 alert(__("Can't add filter: nothing to match on."));
1606                 return false;
1607         }
1608
1609         var query = Form.serialize("filter_add_form");
1610
1611         xmlhttp.open("GET", "backend.php?" + query, true);
1612         xmlhttp.onreadystatechange=infobox_submit_callback;
1613         xmlhttp.send(null);
1614
1615         return true;
1616 }
1617
1618 function toggleSubmitNotEmpty(e, submit_id) {
1619         try {
1620                 document.getElementById(submit_id).disabled = (e.value == "")
1621         } catch (e) {
1622                 exception_error("toggleSubmitNotEmpty", e);
1623         }
1624 }
1625
1626 function isValidURL(s) {
1627         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1628 }
1629
1630 function qaddFeed() {
1631
1632         if (!xmlhttp_ready(xmlhttp)) {
1633                 printLockingError();
1634                 return
1635         }
1636
1637         var form = document.forms['feed_add_form'];
1638         var feed_url = form.feed_url.value;
1639
1640         if (feed_url == "") {
1641                 alert(__("Can't subscribe: no feed URL given."));
1642                 return false;
1643         }
1644
1645         notify_progress(__("Subscribing to feed..."), true);
1646
1647         closeInfoBox();
1648
1649         var feeds_doc = document;
1650
1651 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1652
1653         var query = Form.serialize("feed_add_form");
1654
1655         debug("subscribe q: " + query);
1656
1657 /*      xmlhttp.open("GET", "backend.php?" + query, true);
1658         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1659         xmlhttp.send(null); */
1660
1661         xmlhttp.open("POST", "backend.php", true);
1662         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1663         xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
1664         xmlhttp.send(query);
1665
1666         return false;
1667 }
1668
1669 function filterCR(e, f)
1670 {
1671      var key;
1672
1673      if(window.event)
1674           key = window.event.keyCode;     //IE
1675      else
1676           key = e.which;     //firefox
1677
1678         if (key == 13) {
1679                 if (typeof f != 'undefined') {
1680                         f();
1681                         return false;
1682                 } else {
1683                         return false;
1684                 }
1685         } else {
1686                 return true;
1687         }
1688 }
1689
1690 function getMainContext() {
1691         return this.window;
1692 }
1693
1694 function getFeedsContext() {
1695         return this.window;
1696 }
1697
1698 function getContentContext() {
1699         return this.window;
1700 }
1701
1702 function getHeadlinesContext() {
1703         return this.window;
1704 }
1705
1706 var debug_last_class = "even";
1707
1708 function debug(msg) {
1709
1710         if (debug_last_class == "even") {
1711                 debug_last_class = "odd";
1712         } else {
1713                 debug_last_class = "even";
1714         }
1715
1716         var c = document.getElementById('debug_output');
1717         if (c && c.style.display == "block") {
1718                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1719                         c.removeChild(c.lastChild);
1720                 }
1721
1722                 var d = new Date();
1723                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1724                         ":" + leading_zero(d.getSeconds());
1725                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1726                         msg + "</li>" + c.innerHTML;
1727         }
1728 }
1729
1730 function getInitParam(key) {
1731         return init_params[key];
1732 }
1733
1734 function storeInitParam(key, value) {
1735         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1736         init_params[key] = value;
1737 }
1738
1739 function fatalError(code, message) {
1740         try {
1741
1742                 if (code == 6) {
1743                         window.location.href = "tt-rss.php";
1744                 } else if (code == 5) {
1745                         window.location.href = "update.php";
1746                 } else {
1747                         var fe = document.getElementById("fatal_error");
1748                         var fc = document.getElementById("fatal_error_msg");
1749
1750                         if (message == "") message = "Unknown error";
1751
1752                         fc.innerHTML = "<img src='images/sign_excl.png'> " + message + " (Code " + code + ")";
1753
1754                         fe.style.display = "block";
1755                 }
1756
1757         } catch (e) {
1758                 exception_error("fatalError", e);
1759         }
1760 }
1761
1762 function getFeedName(id, is_cat) {
1763         var d = getFeedsContext().document;
1764
1765         var e;
1766
1767         if (is_cat) {
1768                 e = d.getElementById("FCATN-" + id);
1769         } else {
1770                 e = d.getElementById("FEEDN-" + id);
1771         }
1772         if (e) {
1773                 return e.innerHTML.stripTags();
1774         } else {
1775                 return null;
1776         }
1777 }
1778
1779 function viewContentUrl(url) {
1780         getContentContext().location = url;
1781 }
1782
1783 function filterDlgCheckAction(sender) {
1784
1785         try {
1786
1787                 var action = sender[sender.selectedIndex].value;
1788
1789                 var form = document.forms["filter_add_form"];
1790
1791                 if (!form) {
1792                         form = document.forms["filter_edit_form"];
1793                 }
1794
1795                 if (!form) {
1796                         debug("filterDlgCheckAction: can't find form!");
1797                         return;
1798                 }
1799
1800                 var action_param = form.action_param;
1801
1802                 if (!action_param) {
1803                         debug("filterDlgCheckAction: can't find action param!");
1804                         return;
1805                 }
1806
1807                 // if selected action supports parameters, enable params field
1808                 if (action == 4) {
1809                         action_param.disabled = false;
1810                 } else {
1811                         action_param.disabled = true;
1812                 }
1813
1814         } catch (e) {
1815                 exception_error(e, "filterDlgCheckAction");
1816         }
1817
1818 }
1819
1820 function explainError(code) {
1821         return displayDlg("explainError", code);
1822 }
1823
1824 function logoutUser() {
1825         try {
1826                 if (xmlhttp_ready(xmlhttp_rpc)) {
1827
1828                         notify_progress("Logging out, please wait...", true);
1829
1830                         xmlhttp_rpc.open("GET", "backend.php?op=rpc&subop=logout", true);
1831                         xmlhttp_rpc.onreadystatechange=logout_callback;
1832                         xmlhttp_rpc.send(null);
1833                 } else {
1834                         printLockingError();
1835                 }
1836         } catch (e) {
1837                 exception_error("logoutUser", e);
1838         }
1839 }
1840
1841 // this only searches loaded headlines list, not in CDM
1842 function getRelativePostIds(id) {
1843
1844         debug("getRelativePostIds: " + id);
1845
1846         var ids = new Array();
1847         var container = document.getElementById("headlinesList");
1848
1849         if (container) {
1850                 var rows = container.rows;
1851
1852                 for (var i = 0; i < rows.length; i++) {
1853                         var r_id = rows[i].id.replace("RROW-", "");
1854
1855                         if (r_id == id) {
1856                                 if (i > 0) ids.push(rows[i-1].id.replace("RROW-", ""));
1857                                 if (i > 1) ids.push(rows[i-2].id.replace("RROW-", ""));
1858                                 if (i > 2) ids.push(rows[i-3].id.replace("RROW-", ""));
1859
1860                                 if (i < rows.length-1) ids.push(rows[i+1].id.replace("RROW-", ""));
1861                                 if (i < rows.length-2) ids.push(rows[i+2].id.replace("RROW-", ""));
1862                                 if (i < rows.length-3) ids.push(rows[i+3].id.replace("RROW-", ""));
1863
1864                                 return ids;
1865                         }
1866                 }
1867         }
1868
1869         return false;
1870 }
1871
1872 function openArticleInNewWindow(id) {
1873         try {
1874
1875                 if (!xmlhttp_ready(xmlhttp_rpc)) {
1876                         printLockingError();
1877                         return
1878                 }
1879
1880                 debug("openArticleInNewWindow: " + id);
1881
1882                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1883
1884                 debug(query);
1885
1886                 xmlhttp_rpc.open("GET", query, true);
1887                 xmlhttp_rpc.onreadystatechange=open_article_callback;
1888                 xmlhttp_rpc.send(null);
1889
1890         } catch (e) {
1891                 exception_error("openArticleInNewWindow", e);
1892         }
1893 }
1894
1895 /* http://textsnippets.com/posts/show/835 */
1896
1897 Position.GetWindowSize = function(w) {
1898         w = w ? w : window;
1899         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1900         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1901         return [width, height]
1902 }
1903
1904 /* http://textsnippets.com/posts/show/836 */
1905
1906 Position.Center = function(element, parent) {
1907         var w, h, pw, ph;
1908         var d = Element.getDimensions(element);
1909         w = d.width;
1910         h = d.height;
1911         Position.prepare();
1912         if (!parent) {
1913                 var ws = Position.GetWindowSize();
1914                 pw = ws[0];
1915                 ph = ws[1];
1916         } else {
1917                 pw = parent.offsetWidth;
1918                 ph = parent.offsetHeight;
1919         }
1920         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1921         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1922 }
1923
1924 function labeltest_callback() {
1925         var container = document.getElementById('label_test_result');
1926         if (xmlhttp.readyState == 4) {
1927
1928                 container.innerHTML=xmlhttp.responseText;
1929                 if (!Element.visible(container)) {
1930                         Effect.SlideDown(container, { duration : 0.5 });
1931                 }
1932                 notify("");
1933         }
1934 }
1935
1936 function labelTest() {
1937
1938         var container = document.getElementById('label_test_result');
1939
1940         var form = document.forms['label_edit_form'];
1941
1942         var sql_exp = form.sql_exp.value;
1943         var description = form.description.value;
1944
1945         notify_progress("Loading, please wait...");
1946
1947         xmlhttp.open("GET", "backend.php?op=pref-labels&subop=test&expr=" +
1948                 param_escape(sql_exp) + "&descr=" + param_escape(description), true);
1949
1950         xmlhttp.onreadystatechange=labeltest_callback;
1951         xmlhttp.send(null);
1952
1953         return false;
1954 }
1955