functions.js

   1 var hotkeys_enabled = true;
   2 var debug_mode_enabled = false;
   3 var xmlhttp_rpc = Ajax.getTransport();
   4 var notify_silent = false;
   5 var last_progress_point = 0;
   6
   7 /* add method to remove element from array */
   8
   9 Array.prototype.remove = function(s) {
  10         for (var i=0; i < this.length; i++) {
  11                 if (s == this[i]) this.splice(i, 1);
  12         }
  13 }
  14
  15 function browser_has_opacity() {
  16         return navigator.userAgent.match("Gecko") != null ||
  17                 navigator.userAgent.match("Opera") != null;
  18 }
  19
  20 function is_msie() {
  21         return navigator.userAgent.match("MSIE");
  22 }
  23
  24 function is_opera() {
  25         return navigator.userAgent.match("Opera");
  26 }
  27
  28 function is_khtml() {
  29         return navigator.userAgent.match("KHTML");
  30 }
  31
  32 function is_safari() {
  33         return navigator.userAgent.match("Safari");
  34 }
  35
  36 function exception_error(location, e, silent) {
  37         var msg;
  38
  39         if (e.fileName) {
  40                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  41
  42                 msg = "Exception: " + e.name + ", " + e.message +
  43                         "\nFunction: " + location + "()" +
  44                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  45
  46         } else {
  47                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  48         }
  49
  50         debug("<b>EXCEPTION: " + msg + "</b>");
  51
  52         if (!silent) {
  53                 alert(msg);
  54         }
  55 }
  56
  57 function disableHotkeys() {
  58         hotkeys_enabled = false;
  59 }
  60
  61 function enableHotkeys() {
  62         hotkeys_enabled = true;
  63 }
  64
  65 function xmlhttp_ready(obj) {
  66         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  67 }
  68
  69 function open_article_callback(transport) {
  70         try {
  71
  72                 if (transport.responseXML) {
  73
  74                         var link = transport.responseXML.getElementsByTagName("link")[0];
  75                         var id = transport.responseXML.getElementsByTagName("id")[0];
  76
  77                         debug("open_article_callback, received link: " + link);
  78
  79                         if (link && id) {
  80
  81                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
  82
  83                                 debug("link url: " + link.firstChild.nodeValue + ", wname " + wname);
  84
  85                                 var w = window.open(link.firstChild.nodeValue, wname);
  86
  87                                 if (!w) { notify_error("Failed to load article in new window"); }
  88
  89                                 if (id) {
  90                                         id = id.firstChild.nodeValue;
  91                                         if (!document.getElementById("headlinesList")) {
  92                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
  93                                         }
  94                                 }
  95                         } else {
  96                                 notify_error("Can't open article: received invalid article link");
  97                         }
  98                 } else {
  99                         notify_error("Can't open article: received invalid XML");
 100                 }
 101
 102         } catch (e) {
 103                 exception_error("open_article_callback", e);
 104         }
 105 }
 106
 107 function param_escape(arg) {
 108         if (typeof encodeURIComponent != 'undefined')
 109                 return encodeURIComponent(arg);
 110         else
 111                 return escape(arg);
 112 }
 113
 114 function param_unescape(arg) {
 115         if (typeof decodeURIComponent != 'undefined')
 116                 return decodeURIComponent(arg);
 117         else
 118                 return unescape(arg);
 119 }
 120
 121 function delay(gap) {
 122         var then,now;
 123         then=new Date().getTime();
 124         now=then;
 125         while((now-then)<gap) {
 126                 now=new Date().getTime();
 127         }
 128 }
 129
 130 var notify_hide_timerid = false;
 131
 132 function hide_notify() {
 133         var n = document.getElementById("notify");
 134         if (n) {
 135                 n.style.display = "none";
 136         }
 137 }
 138
 139 function notify_silent_next() {
 140         notify_silent = true;
 141 }
 142
 143 function notify_real(msg, no_hide, n_type) {
 144
 145         if (notify_silent) {
 146                 notify_silent = false;
 147                 return;
 148         }
 149
 150         var n = document.getElementById("notify");
 151         var nb = document.getElementById("notify_body");
 152
 153         if (!n || !nb) return;
 154
 155         if (notify_hide_timerid) {
 156                 window.clearTimeout(notify_hide_timerid);
 157         }
 158
 159         if (msg == "") {
 160                 if (n.style.display == "block") {
 161                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 162                 }
 163                 return;
 164         } else {
 165                 n.style.display = "block";
 166         }
 167
 168         /* types:
 169
 170                 1 - generic
 171                 2 - progress
 172                 3 - error
 173                 4 - info
 174
 175         */
 176
 177         if (typeof __ != 'undefined') {
 178                 msg = __(msg);
 179         }
 180
 181         if (n_type == 1) {
 182                 n.className = "notify";
 183         } else if (n_type == 2) {
 184                 n.className = "notifyProgress";
 185                 msg = "<img src='images/indicator_white.gif'> " + msg;
 186         } else if (n_type == 3) {
 187                 n.className = "notifyError";
 188                 msg = "<img src='images/sign_excl.gif'> " + msg;
 189         } else if (n_type == 4) {
 190                 n.className = "notifyInfo";
 191                 msg = "<img src='images/sign_info.gif'> " + msg;
 192         }
 193
 194 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 195
 196         nb.innerHTML = msg;
 197
 198         if (!no_hide) {
 199                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 200         }
 201 }
 202
 203 function notify(msg, no_hide) {
 204         notify_real(msg, no_hide, 1);
 205 }
 206
 207 function notify_progress(msg, no_hide) {
 208         notify_real(msg, no_hide, 2);
 209 }
 210
 211 function notify_error(msg, no_hide) {
 212         notify_real(msg, no_hide, 3);
 213
 214 }
 215
 216 function notify_info(msg, no_hide) {
 217         notify_real(msg, no_hide, 4);
 218 }
 219
 220 function printLockingError() {
 221         notify_info("Please wait until operation finishes.");
 222 }
 223
 224 function cleanSelectedList(element) {
 225         var content = document.getElementById(element);
 226
 227         if (!document.getElementById("feedCatHolder")) {
 228                 for (i = 0; i < content.childNodes.length; i++) {
 229                         var child = content.childNodes[i];
 230                         try {
 231                                 child.className = child.className.replace("Selected", "");
 232                         } catch (e) {
 233                                 //
 234                         }
 235                 }
 236         } else {
 237                 for (i = 0; i < content.childNodes.length; i++) {
 238                         var child = content.childNodes[i];
 239                         if (child.id == "feedCatHolder") {
 240                                 debug(child.id);
 241                                 var fcat = child.lastChild;
 242                                 for (j = 0; j < fcat.childNodes.length; j++) {
 243                                         var feed = fcat.childNodes[j];
 244                                         feed.className = feed.className.replace("Selected", "");
 245                                 }
 246                         }
 247                 }
 248         }
 249 }
 250
 251
 252 function cleanSelected(element) {
 253         var content = document.getElementById(element);
 254
 255         for (i = 0; i < content.rows.length; i++) {
 256                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 257         }
 258 }
 259
 260 function getVisibleUnreadHeadlines() {
 261         var content = document.getElementById("headlinesList");
 262
 263         var rows = new Array();
 264
 265         if (!content) return rows;
 266
 267         for (i = 0; i < content.rows.length; i++) {
 268                 var row_id = content.rows[i].id.replace("RROW-", "");
 269                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 270                                 rows.push(row_id);
 271                 }
 272         }
 273         return rows;
 274 }
 275
 276 function getVisibleHeadlineIds() {
 277
 278         var content = document.getElementById("headlinesList");
 279
 280         var rows = new Array();
 281
 282         if (!content) return rows;
 283
 284         for (i = 0; i < content.rows.length; i++) {
 285                 var row_id = content.rows[i].id.replace("RROW-", "");
 286                 if (row_id.length > 0) {
 287                                 rows.push(row_id);
 288                 }
 289         }
 290         return rows;
 291 }
 292
 293 function getFirstVisibleHeadlineId() {
 294         if (isCdmMode()) {
 295                 var rows = cdmGetVisibleArticles();
 296                 return rows[0];
 297         } else {
 298                 var rows = getVisibleHeadlineIds();
 299                 return rows[0];
 300         }
 301 }
 302
 303 function getLastVisibleHeadlineId() {
 304         if (isCdmMode()) {
 305                 var rows = cdmGetVisibleArticles();
 306                 return rows[rows.length-1];
 307         } else {
 308                 var rows = getVisibleHeadlineIds();
 309                 return rows[rows.length-1];
 310         }
 311 }
 312
 313 function markHeadline(id) {
 314         var row = document.getElementById("RROW-" + id);
 315         if (row) {
 316                 var is_active = false;
 317
 318                 if (row.className.match("Active")) {
 319                         is_active = true;
 320                 }
 321                 row.className = row.className.replace("Selected", "");
 322                 row.className = row.className.replace("Active", "");
 323                 row.className = row.className.replace("Insensitive", "");
 324
 325                 if (is_active) {
 326                         row.className = row.className = "Active";
 327                 }
 328
 329                 var check = document.getElementById("RCHK-" + id);
 330
 331                 if (check) {
 332                         check.checked = true;
 333                 }
 334
 335                 row.className = row.className + "Selected";
 336
 337         }
 338 }
 339
 340 function getFeedIds() {
 341         var content = document.getElementById("feedsList");
 342
 343         var rows = new Array();
 344
 345         for (i = 0; i < content.rows.length; i++) {
 346                 var id = content.rows[i].id.replace("FEEDR-", "");
 347                 if (id.length > 0) {
 348                         rows.push(id);
 349                 }
 350         }
 351
 352         return rows;
 353 }
 354
 355 function setCookie(name, value, lifetime, path, domain, secure) {
 356
 357         var d = false;
 358
 359         if (lifetime) {
 360                 d = new Date();
 361                 d.setTime(d.getTime() + (lifetime * 1000));
 362         }
 363
 364         debug("setCookie: " + name + " => " + value + ": " + d);
 365
 366         int_setCookie(name, value, d, path, domain, secure);
 367
 368 }
 369
 370 function int_setCookie(name, value, expires, path, domain, secure) {
 371         document.cookie= name + "=" + escape(value) +
 372                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 373                 ((path) ? "; path=" + path : "") +
 374                 ((domain) ? "; domain=" + domain : "") +
 375                 ((secure) ? "; secure" : "");
 376 }
 377
 378 function delCookie(name, path, domain) {
 379         if (getCookie(name)) {
 380                 document.cookie = name + "=" +
 381                 ((path) ? ";path=" + path : "") +
 382                 ((domain) ? ";domain=" + domain : "" ) +
 383                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 384         }
 385 }
 386
 387
 388 function getCookie(name) {
 389
 390         var dc = document.cookie;
 391         var prefix = name + "=";
 392         var begin = dc.indexOf("; " + prefix);
 393         if (begin == -1) {
 394             begin = dc.indexOf(prefix);
 395             if (begin != 0) return null;
 396         }
 397         else {
 398             begin += 2;
 399         }
 400         var end = document.cookie.indexOf(";", begin);
 401         if (end == -1) {
 402             end = dc.length;
 403         }
 404         return unescape(dc.substring(begin + prefix.length, end));
 405 }
 406
 407 function disableContainerChildren(id, disable, doc) {
 408
 409         if (!doc) doc = document;
 410
 411         var container = doc.getElementById(id);
 412
 413         if (!container) {
 414                 //alert("disableContainerChildren: element " + id + " not found");
 415                 return;
 416         }
 417
 418         for (var i = 0; i < container.childNodes.length; i++) {
 419                 var child = container.childNodes[i];
 420
 421                 try {
 422                         child.disabled = disable;
 423                 } catch (E) {
 424
 425                 }
 426
 427                 if (disable) {
 428                         if (child.className && child.className.match("button")) {
 429                                 child.className = "disabledButton";
 430                         }
 431                 } else {
 432                         if (child.className && child.className.match("disabledButton")) {
 433                                 child.className = "button";
 434                         }
 435                 }
 436         }
 437
 438 }
 439
 440 function gotoPreferences() {
 441         document.location.href = "prefs.php";
 442 }
 443
 444 function gotoMain() {
 445         document.location.href = "tt-rss.php";
 446 }
 447
 448 function gotoExportOpml() {
 449         document.location.href = "opml.php?op=Export";
 450 }
 451
 452 function getActiveFeedId() {
 453 //      return getCookie("ttrss_vf_actfeed");
 454         try {
 455                 debug("gAFID: " + active_feed_id);
 456                 return active_feed_id;
 457         } catch (e) {
 458                 exception_error("getActiveFeedId", e);
 459         }
 460 }
 461
 462 function activeFeedIsCat() {
 463         return active_feed_is_cat;
 464 }
 465
 466 function setActiveFeedId(id) {
 467 //      return setCookie("ttrss_vf_actfeed", id);
 468         try {
 469                 debug("sAFID(" + id + ")");
 470                 active_feed_id = id;
 471         } catch (e) {
 472                 exception_error("setActiveFeedId", e);
 473         }
 474 }
 475
 476 function parse_counters(reply, scheduled_call) {
 477         try {
 478
 479                 var feeds_found = 0;
 480
 481                 var elems = reply.getElementsByTagName("counter");
 482
 483                 for (var l = 0; l < elems.length; l++) {
 484
 485                         var id = elems[l].getAttribute("id");
 486                         var t = elems[l].getAttribute("type");
 487                         var ctr = elems[l].getAttribute("counter");
 488                         var error = elems[l].getAttribute("error");
 489                         var has_img = elems[l].getAttribute("hi");
 490                         var updated = elems[l].getAttribute("updated");
 491                         var title = elems[l].getAttribute("title");
 492
 493                         if (id == "global-unread") {
 494                                 global_unread = ctr;
 495                                 updateTitle();
 496                                 continue;
 497                         }
 498
 499                         if (id == "subscribed-feeds") {
 500                                 feeds_found = ctr;
 501                                 continue;
 502                         }
 503
 504                         if (t == "category") {
 505                                 var catctr = document.getElementById("FCATCTR-" + id);
 506                                 if (catctr) {
 507                                         catctr.innerHTML = "(" + ctr + ")";
 508                                         if (ctr > 0) {
 509                                                 catctr.className = "catCtrHasUnread";
 510                                         } else {
 511                                                 catctr.className = "catCtrNoUnread";
 512                                         }
 513                                 }
 514                                 continue;
 515                         }
 516
 517                         var feedctr = document.getElementById("FEEDCTR-" + id);
 518                         var feedu = document.getElementById("FEEDU-" + id);
 519                         var feedr = document.getElementById("FEEDR-" + id);
 520                         var feed_img = document.getElementById("FIMG-" + id);
 521                         var feedlink = document.getElementById("FEEDL-" + id);
 522                         var feedupd = document.getElementById("FLUPD-" + id);
 523
 524                         if (updated && feedlink) {
 525                                 if (error) {
 526                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 527                                 } else {
 528                                         feedlink.title = "Updated: " + updated;
 529                                 }
 530                         }
 531
 532                         if (updated && feedupd) {
 533                                 if (error) {
 534                                         feedupd.innerHTML = updated + " (Error)";
 535                                 } else {
 536                                         feedupd.innerHTML = updated;
 537                                 }
 538                         }
 539
 540                         if (has_img && feed_img && !is_msie()) {
 541                                 if (!feed_img.src.match(id + ".ico")) {
 542                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 543                                 }
 544                         }
 545
 546                         if (feedlink && title) {
 547                                 feedlink.innerHTML = title;
 548                         }
 549
 550                         if (feedctr && feedu && feedr) {
 551
 552                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 553                                         viewCurrentFeed();
 554                                 }
 555
 556                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 557
 558                                 feedu.innerHTML = ctr;
 559
 560                                 if (error) {
 561                                         feedr.className = feedr.className.replace("feed", "error");
 562                                 } else if (id > 0) {
 563                                         feedr.className = feedr.className.replace("error", "feed");
 564                                 }
 565
 566                                 if (ctr > 0) {
 567                                         feedctr.className = "odd";
 568                                         if (!feedr.className.match("Unread")) {
 569                                                 var is_selected = feedr.className.match("Selected");
 570
 571                                                 feedr.className = feedr.className.replace("Selected", "");
 572                                                 feedr.className = feedr.className.replace("Unread", "");
 573
 574                                                 feedr.className = feedr.className + "Unread";
 575
 576                                                 if (is_selected) {
 577                                                         feedr.className = feedr.className + "Selected";
 578                                                 }
 579
 580                                         }
 581
 582                                         if (row_needs_hl) {
 583                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 584                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 585                                         }
 586                                 } else {
 587                                         feedctr.className = "invisible";
 588                                         feedr.className = feedr.className.replace("Unread", "");
 589                                 }
 590                         }
 591                 }
 592
 593                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 594
 595                 var feeds_stored = number_of_feeds;
 596
 597                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 598
 599                 if (feeds_stored != feeds_found) {
 600                         number_of_feeds = feeds_found;
 601
 602                         if (feeds_stored != 0 && feeds_found != 0) {
 603                                 debug("Subscribed feed number changed, refreshing feedlist");
 604                                 setTimeout('updateFeedList(false, false)', 50);
 605                         }
 606                 }
 607
 608         } catch (e) {
 609                 exception_error("parse_counters", e);
 610         }
 611 }
 612
 613 function parse_counters_reply(transport, scheduled_call) {
 614
 615         if (!transport.responseXML) {
 616                 notify_error("Backend did not return valid XML", true);
 617                 return;
 618         }
 619
 620         var reply = transport.responseXML.firstChild;
 621
 622         if (!reply) {
 623                 notify_error("Backend did not return expected XML object", true);
 624                 updateTitle("");
 625                 return;
 626         }
 627
 628         var error_code = false;
 629         var error_msg = false;
 630
 631         if (reply.firstChild) {
 632                 error_code = reply.firstChild.getAttribute("error-code");
 633                 error_msg = reply.firstChild.getAttribute("error-msg");
 634         }
 635
 636         if (!error_code) {
 637                 error_code = reply.getAttribute("error-code");
 638                 error_msg = reply.getAttribute("error-msg");
 639         }
 640
 641         if (error_code && error_code != 0) {
 642                 debug("refetch_callback: got error code " + error_code);
 643                 return fatalError(error_code, error_msg);
 644         }
 645
 646         var counters = reply.getElementsByTagName("counters")[0];
 647
 648         parse_counters(counters, scheduled_call);
 649
 650         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 651
 652         parse_runtime_info(runtime_info);
 653
 654         if (getInitParam("feeds_sort_by_unread") == 1) {
 655                         resort_feedlist();
 656         }
 657
 658         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 659
 660 }
 661
 662 function all_counters_callback2(transport) {
 663         try {
 664                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 665                 parse_counters_reply(transport);
 666                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 667
 668         } catch (e) {
 669                 exception_error("all_counters_callback2", e);
 670         }
 671 }
 672
 673 function get_feed_unread(id) {
 674         try {
 675                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 676         } catch (e) {
 677                 exception_error("get_feed_unread", e, true);
 678                 return -1;
 679         }
 680 }
 681
 682 function get_feed_entry_unread(doc, elem) {
 683
 684         var id = elem.id.replace("FEEDR-", "");
 685
 686         if (id <= 0) {
 687                 return -1;
 688         }
 689
 690         try {
 691                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 692         } catch (e) {
 693                 return -1;
 694         }
 695 }
 696
 697 function resort_category(doc, node) {
 698         debug("resort_category: " + node);
 699
 700         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 701                 for (i = 0; i < node.childNodes.length; i++) {
 702                         if (node.childNodes[i].nodeName != "LI") { continue; }
 703
 704                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 705                                 continue;
 706                         }
 707
 708                         for (j = i+1; j < node.childNodes.length; j++) {
 709                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 710
 711                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 712                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 713
 714                                 if (cur_val > tmp_val) {
 715                                         tempnode_i = node.childNodes[i].cloneNode(true);
 716                                         tempnode_j = node.childNodes[j].cloneNode(true);
 717                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 718                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 719                                 }
 720                         }
 721
 722                 }
 723         }
 724
 725 }
 726
 727 function resort_feedlist() {
 728         debug("resort_feedlist");
 729
 730         var fd = document;
 731
 732         if (fd.getElementById("feedCatHolder")) {
 733
 734                 var feeds = fd.getElementById("feedList");
 735                 var child = feeds.firstChild;
 736
 737                 while (child) {
 738
 739                         if (child.id == "feedCatHolder") {
 740                                 resort_category(fd, child.firstChild);
 741                         }
 742
 743                         child = child.nextSibling;
 744                 }
 745
 746         } else {
 747                 resort_category(fd, fd.getElementById("feedList"));
 748         }
 749 }
 750
 751 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 752   * * @author Sundar Dorai-Raj
 753   * * Email: sdoraira@vt.edu
 754   * * This program is free software; you can redistribute it and/or
 755   * * modify it under the terms of the GNU General Public License
 756   * * as published by the Free Software Foundation; either version 2
 757   * * of the License, or (at your option) any later version,
 758   * * provided that any use properly credits the author.
 759   * * This program is distributed in the hope that it will be useful,
 760   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 761   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 762   * * GNU General Public License for more details at http://www.gnu.org * * */
 763
 764   var numbers=".0123456789";
 765   function isNumeric(x) {
 766     // is x a String or a character?
 767     if(x.length>1) {
 768       // remove negative sign
 769       x=Math.abs(x)+"";
 770       for(j=0;j<x.length;j++) {
 771         // call isNumeric recursively for each character
 772         number=isNumeric(x.substring(j,j+1));
 773         if(!number) return number;
 774       }
 775       return number;
 776     }
 777     else {
 778       // if x is number return true
 779       if(numbers.indexOf(x)>=0) return true;
 780       return false;
 781     }
 782   }
 783
 784
 785 function hideOrShowFeeds(doc, hide) {
 786
 787         debug("hideOrShowFeeds: " + doc + ", " + hide);
 788
 789         var fd = document;
 790
 791         var list = fd.getElementById("feedList");
 792
 793         if (fd.getElementById("feedCatHolder")) {
 794
 795                 var feeds = fd.getElementById("feedList");
 796                 var child = feeds.firstChild;
 797
 798                 while (child) {
 799
 800                         if (child.id == "feedCatHolder") {
 801                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 802                         }
 803
 804                         child = child.nextSibling;
 805                 }
 806
 807         } else {
 808                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 809         }
 810 }
 811
 812 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 813
 814 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 815
 816         var cat_unread = 0;
 817
 818         if (!node) {
 819                 debug("hideOrShowFeeds: passed node is null, aborting");
 820                 return;
 821         }
 822
 823 //      debug("cat: " + node.id);
 824
 825         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 826                 for (i = 0; i < node.childNodes.length; i++) {
 827                         if (node.childNodes[i].nodeName != "LI") { continue; }
 828
 829                         if (node.childNodes[i].style != undefined) {
 830
 831                                 var has_unread = (node.childNodes[i].className != "feed" &&
 832                                         node.childNodes[i].className != "label" &&
 833                                         !(!getInitParam("hide_read_shows_special") &&
 834                                                 node.childNodes[i].className == "virt") &&
 835                                         node.childNodes[i].className != "error" &&
 836                                         node.childNodes[i].className != "tag");
 837
 838 //                              debug(node.childNodes[i].id + " --> " + has_unread);
 839
 840                                 if (hide && !has_unread) {
 841                                         //node.childNodes[i].style.display = "none";
 842                                         var id = node.childNodes[i].id;
 843                                         Effect.Fade(node.childNodes[i], {duration : 0.3,
 844                                                 queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 845                                 }
 846
 847                                 if (!hide) {
 848                                         node.childNodes[i].style.display = "list-item";
 849                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
 850                                 }
 851
 852                                 if (has_unread) {
 853                                         node.childNodes[i].style.display = "list-item";
 854                                         cat_unread++;
 855                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
 856                                         //Effect.Highlight(node.childNodes[i]);
 857                                 }
 858                         }
 859                 }
 860         }
 861
 862 //      debug("end cat: " + node.id + " unread " + cat_unread);
 863
 864         if (cat_unread == 0) {
 865                 if (cat_node.style == undefined) {
 866                         debug("ERROR: supplied cat_node " + cat_node +
 867                                 " has no styles. WTF?");
 868                         return;
 869                 }
 870                 if (hide) {
 871                         //cat_node.style.display = "none";
 872                         Effect.Fade(cat_node, {duration : 0.3,
 873                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 874                 } else {
 875                         cat_node.style.display = "list-item";
 876                 }
 877         } else {
 878                 try {
 879                         cat_node.style.display = "list-item";
 880                 } catch (e) {
 881                         debug(e);
 882                 }
 883         }
 884
 885 //      debug("unread for category: " + cat_unread);
 886 }
 887
 888 function selectTableRow(r, do_select) {
 889         r.className = r.className.replace("Selected", "");
 890
 891         if (do_select) {
 892                 r.className = r.className + "Selected";
 893         }
 894 }
 895
 896 function selectTableRowById(elem_id, check_id, do_select) {
 897
 898         try {
 899
 900                 var row = document.getElementById(elem_id);
 901
 902                 if (row) {
 903                         selectTableRow(row, do_select);
 904                 }
 905
 906                 var check = document.getElementById(check_id);
 907
 908                 if (check) {
 909                         check.checked = do_select;
 910                 }
 911         } catch (e) {
 912                 exception_error("selectTableRowById", e);
 913         }
 914 }
 915
 916 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 917         classcheck, reset_others) {
 918
 919         var content = document.getElementById(content_id);
 920
 921         if (!content) {
 922                 alert("[selectTableRows] Element " + content_id + " not found.");
 923                 return;
 924         }
 925
 926         for (i = 0; i < content.rows.length; i++) {
 927                 if (Element.visible(content.rows[i])) {
 928                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 929
 930                                 if (content.rows[i].id.match(prefix)) {
 931                                         selectTableRow(content.rows[i], do_select);
 932
 933                                         var row_id = content.rows[i].id.replace(prefix, "");
 934                                         var check = document.getElementById(check_prefix + row_id);
 935
 936                                         if (check) {
 937                                                 check.checked = do_select;
 938                                         }
 939                                 } else if (reset_others) {
 940                                         selectTableRow(content.rows[i], false);
 941
 942                                         var row_id = content.rows[i].id.replace(prefix, "");
 943                                         var check = document.getElementById(check_prefix + row_id);
 944
 945                                         if (check) {
 946                                                 check.checked = false;
 947                                         }
 948
 949                                 }
 950                         } else if (reset_others) {
 951                                 selectTableRow(content.rows[i], false);
 952
 953                                 var row_id = content.rows[i].id.replace(prefix, "");
 954                                 var check = document.getElementById(check_prefix + row_id);
 955
 956                                 if (check) {
 957                                         check.checked = false;
 958                                 }
 959
 960                         }
 961                 }
 962         }
 963 }
 964
 965 function getSelectedTableRowIds(content_id, prefix) {
 966
 967         var content = document.getElementById(content_id);
 968
 969         if (!content) {
 970                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 971                 return;
 972         }
 973
 974         var sel_rows = new Array();
 975
 976         for (i = 0; i < content.rows.length; i++) {
 977                 if (content.rows[i].id.match(prefix) &&
 978                                 content.rows[i].className.match("Selected")) {
 979
 980                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 981                         sel_rows.push(row_id);
 982                 }
 983         }
 984
 985         return sel_rows;
 986
 987 }
 988
 989 function toggleSelectRowById(sender, id) {
 990         var row = document.getElementById(id);
 991
 992         if (sender.checked) {
 993                 if (!row.className.match("Selected")) {
 994                         row.className = row.className + "Selected";
 995                 }
 996         } else {
 997                 if (row.className.match("Selected")) {
 998                         row.className = row.className.replace("Selected", "");
 999                 }
1000         }
1001 }
1002
1003 function toggleSelectListRow(sender) {
1004         var parent_row = sender.parentNode;
1005
1006         if (sender.checked) {
1007                 if (!parent_row.className.match("Selected")) {
1008                         parent_row.className = parent_row.className + "Selected";
1009                 }
1010         } else {
1011                 if (parent_row.className.match("Selected")) {
1012                         parent_row.className = parent_row.className.replace("Selected", "");
1013                 }
1014         }
1015 }
1016
1017 function tSR(sender) {
1018         return toggleSelectRow(sender);
1019 }
1020
1021 function toggleSelectRow(sender) {
1022         var parent_row = sender.parentNode.parentNode;
1023
1024         if (sender.checked) {
1025                 if (!parent_row.className.match("Selected")) {
1026                         parent_row.className = parent_row.className + "Selected";
1027                 }
1028         } else {
1029                 if (parent_row.className.match("Selected")) {
1030                         parent_row.className = parent_row.className.replace("Selected", "");
1031                 }
1032         }
1033 }
1034
1035 function getRelativeFeedId(list, id, direction, unread_only) {
1036         var rows = list.getElementsByTagName("LI");
1037         var feeds = new Array();
1038
1039         for (var i = 0; i < rows.length; i++) {
1040                 if (rows[i].id.match("FEEDR-")) {
1041
1042                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1043
1044                                 if (!unread_only ||
1045                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1046                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1047                                 }
1048                         }
1049                 }
1050         }
1051
1052         if (!id) {
1053                 if (direction == "next") {
1054                         return feeds.shift();
1055                 } else {
1056                         return feeds.pop();
1057                 }
1058         } else {
1059                 if (direction == "next") {
1060                         var idx = feeds.indexOf(id);
1061                         if (idx != -1 && idx < feeds.length) {
1062                                 return feeds[idx+1];
1063                         } else {
1064                                 return getRelativeFeedId(list, false, direction, unread_only);
1065                         }
1066                 } else {
1067                         var idx = feeds.indexOf(id);
1068                         if (idx > 0) {
1069                                 return feeds[idx-1];
1070                         } else {
1071                                 return getRelativeFeedId(list, false, direction, unread_only);
1072                         }
1073                 }
1074
1075         }
1076 }
1077
1078 function showBlockElement(id, h_id) {
1079         var elem = document.getElementById(id);
1080
1081         if (elem) {
1082                 elem.style.display = "block";
1083
1084                 if (h_id) {
1085                         elem = document.getElementById(h_id);
1086                         if (elem) {
1087                                 elem.style.display = "none";
1088                         }
1089                 }
1090         } else {
1091                 alert("[showBlockElement] can't find element with id " + id);
1092         }
1093 }
1094
1095 function appearBlockElement_afh(effect) {
1096
1097 }
1098
1099 function checkboxToggleElement(elem, id) {
1100         if (elem.checked) {
1101                 Effect.SlideDown(id, {duration : 0.5});
1102         } else {
1103                 Effect.SlideUp(id, {duration : 0.5});
1104         }
1105 }
1106
1107 function appearBlockElement(id, h_id) {
1108
1109         try {
1110                 if (h_id) {
1111                         Effect.Fade(h_id);
1112                 }
1113                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1114         } catch (e) {
1115                 exception_error("appearBlockElement", e);
1116         }
1117
1118 }
1119
1120 function hideParentElement(e) {
1121         e.parentNode.style.display = "none";
1122 }
1123
1124 function dropboxSelect(e, v) {
1125         for (i = 0; i < e.length; i++) {
1126                 if (e[i].value == v) {
1127                         e.selectedIndex = i;
1128                         break;
1129                 }
1130         }
1131 }
1132
1133 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1134 // bugfixed just a little bit :-)
1135 function getURLParam(strParamName){
1136   var strReturn = "";
1137   var strHref = window.location.href;
1138
1139   if (strHref.indexOf("#") == strHref.length-1) {
1140                 strHref = strHref.substring(0, strHref.length-1);
1141   }
1142
1143   if ( strHref.indexOf("?") > -1 ){
1144     var strQueryString = strHref.substr(strHref.indexOf("?"));
1145     var aQueryString = strQueryString.split("&");
1146     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1147       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1148         var aParam = aQueryString[iParam].split("=");
1149         strReturn = aParam[1];
1150         break;
1151       }
1152     }
1153   }
1154   return strReturn;
1155 }
1156
1157 function leading_zero(p) {
1158         var s = String(p);
1159         if (s.length == 1) s = "0" + s;
1160         return s;
1161 }
1162
1163 function closeInfoBox(cleanup) {
1164
1165         if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1166                 var overlay = document.getElementById("dialog_overlay");
1167                 if (overlay) {
1168                         overlay.style.display = "none";
1169                 }
1170         }
1171
1172         var box = document.getElementById('infoBox');
1173         var shadow = document.getElementById('infoBoxShadow');
1174
1175         if (shadow) {
1176                 shadow.style.display = "none";
1177         } else if (box) {
1178                 box.style.display = "none";
1179         }
1180
1181         if (cleanup) box.innerHTML = "&nbsp;";
1182
1183         enableHotkeys();
1184
1185         return false;
1186 }
1187
1188
1189 function displayDlg(id, param) {
1190
1191         notify_progress("Loading, please wait...", true);
1192
1193         disableHotkeys();
1194
1195         var query = "backend.php?op=dlg&id=" +
1196                 param_escape(id) + "&param=" + param_escape(param);
1197
1198         new Ajax.Request(query, {
1199                 onComplete: function (transport) {
1200                         infobox_callback2(transport);
1201                 } });
1202
1203         return false;
1204 }
1205
1206 function infobox_submit_callback2(transport) {
1207         closeInfoBox();
1208
1209         try {
1210                 // called from prefs, reload tab
1211                 if (typeof active_tab != 'undefined' && active_tab) {
1212                         selectTab(active_tab, false);
1213                 }
1214         } catch (e) { }
1215
1216         if (transport.responseText) {
1217                 notify_info(transport.responseText);
1218         }
1219 }
1220
1221 function infobox_callback2(transport) {
1222         try {
1223
1224                 debug("infobox_callback2");
1225
1226                 if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1227                         var overlay = document.getElementById("dialog_overlay");
1228                         if (overlay) {
1229                                 overlay.style.display = "block";
1230                         }
1231                 }
1232
1233                 var box = document.getElementById('infoBox');
1234                 var shadow = document.getElementById('infoBoxShadow');
1235                 if (box) {
1236
1237 /*                              if (!is_safari()) {
1238                                 new Draggable(shadow);
1239                         } */
1240
1241                         box.innerHTML=transport.responseText;
1242                         if (shadow) {
1243                                 shadow.style.display = "block";
1244                         } else {
1245                                 box.style.display = "block";
1246                         }
1247                 }
1248
1249                 /* FIXME this needs to be moved out somewhere */
1250
1251                 if (document.getElementById("tags_choices")) {
1252                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1253                                 "backend.php?op=rpc&subop=completeTags",
1254                                 { tokens: ',', paramName: "search" });
1255                 }
1256
1257                 disableHotkeys();
1258
1259                 notify("");
1260         } catch (e) {
1261                 exception_error("infobox_callback2", e);
1262         }
1263 }
1264
1265 function createFilter() {
1266
1267         try {
1268
1269                 var form = document.forms['filter_add_form'];
1270                 var reg_exp = form.reg_exp.value;
1271
1272                 if (reg_exp == "") {
1273                         alert(__("Can't add filter: nothing to match on."));
1274                         return false;
1275                 }
1276
1277                 var query = Form.serialize("filter_add_form");
1278
1279                 // we can be called from some other tab in Prefs
1280                 if (typeof active_tab != 'undefined' && active_tab) {
1281                         active_tab = "filterConfig";
1282                 }
1283
1284                 new Ajax.Request("backend.php?" + query, {
1285                         onComplete: function (transport) {
1286                                 infobox_submit_callback2(transport);
1287                         } });
1288
1289                 return true;
1290
1291         } catch (e) {
1292                 exception_error("createFilter", e);
1293         }
1294 }
1295
1296 function toggleSubmitNotEmpty(e, submit_id) {
1297         try {
1298                 document.getElementById(submit_id).disabled = (e.value == "")
1299         } catch (e) {
1300                 exception_error("toggleSubmitNotEmpty", e);
1301         }
1302 }
1303
1304 function isValidURL(s) {
1305         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1306 }
1307
1308 function subscribeToFeed() {
1309
1310         var form = document.forms['feed_add_form'];
1311         var feed_url = form.feed_url.value;
1312
1313         if (feed_url == "") {
1314                 alert(__("Can't subscribe: no feed URL given."));
1315                 return false;
1316         }
1317
1318         notify_progress(__("Subscribing to feed..."), true);
1319
1320         closeInfoBox();
1321
1322         var feeds_doc = document;
1323
1324 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1325
1326         var query = Form.serialize("feed_add_form");
1327
1328         debug("subscribe q: " + query);
1329
1330         new Ajax.Request("backend.php", {
1331                 parameters: query,
1332                 onComplete: function(transport) {
1333                         dlg_frefresh_callback(transport);
1334                 } });
1335
1336         return false;
1337 }
1338
1339 function filterCR(e, f)
1340 {
1341      var key;
1342
1343      if(window.event)
1344           key = window.event.keyCode;     //IE
1345      else
1346           key = e.which;     //firefox
1347
1348         if (key == 13) {
1349                 if (typeof f != 'undefined') {
1350                         f();
1351                         return false;
1352                 } else {
1353                         return false;
1354                 }
1355         } else {
1356                 return true;
1357         }
1358 }
1359
1360 function getMainContext() {
1361         return this.window;
1362 }
1363
1364 function getFeedsContext() {
1365         return this.window;
1366 }
1367
1368 function getContentContext() {
1369         return this.window;
1370 }
1371
1372 function getHeadlinesContext() {
1373         return this.window;
1374 }
1375
1376 var debug_last_class = "even";
1377
1378 function debug(msg) {
1379
1380         if (debug_last_class == "even") {
1381                 debug_last_class = "odd";
1382         } else {
1383                 debug_last_class = "even";
1384         }
1385
1386         var c = document.getElementById('debug_output');
1387         if (c && c.style.display == "block") {
1388                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1389                         c.removeChild(c.lastChild);
1390                 }
1391
1392                 var d = new Date();
1393                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1394                         ":" + leading_zero(d.getSeconds());
1395                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1396                         msg + "</li>" + c.innerHTML;
1397         }
1398 }
1399
1400 function getInitParam(key) {
1401         return init_params[key];
1402 }
1403
1404 function storeInitParam(key, value) {
1405         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1406         init_params[key] = value;
1407 }
1408
1409 function fatalError(code, message) {
1410         try {
1411
1412                 if (code == 6) {
1413                         window.location.href = "tt-rss.php";
1414                 } else if (code == 5) {
1415                         window.location.href = "update.php";
1416                 } else {
1417                         var fe = document.getElementById("fatal_error");
1418                         var fc = document.getElementById("fatal_error_msg");
1419
1420                         if (message == "") message = "Unknown error";
1421
1422                         fc.innerHTML = "<img src='images/sign_excl.gif'> " + message + " (Code " + code + ")";
1423
1424                         fe.style.display = "block";
1425                 }
1426
1427         } catch (e) {
1428                 exception_error("fatalError", e);
1429         }
1430 }
1431
1432 function getFeedName(id, is_cat) {
1433         var d = getFeedsContext().document;
1434
1435         var e;
1436
1437         if (is_cat) {
1438                 e = d.getElementById("FCATN-" + id);
1439         } else {
1440                 e = d.getElementById("FEEDN-" + id);
1441         }
1442         if (e) {
1443                 return e.innerHTML.stripTags();
1444         } else {
1445                 return null;
1446         }
1447 }
1448
1449 function viewContentUrl(url) {
1450         getContentContext().location = url;
1451 }
1452
1453 function filterDlgCheckAction(sender) {
1454
1455         try {
1456
1457                 var action = sender[sender.selectedIndex].value;
1458
1459                 var form = document.forms["filter_add_form"];
1460
1461                 if (!form) {
1462                         form = document.forms["filter_edit_form"];
1463                 }
1464
1465                 if (!form) {
1466                         debug("filterDlgCheckAction: can't find form!");
1467                         return;
1468                 }
1469
1470                 var action_param = form.action_param;
1471
1472                 if (!action_param) {
1473                         debug("filterDlgCheckAction: can't find action param!");
1474                         return;
1475                 }
1476
1477                 // if selected action supports parameters, enable params field
1478                 if (action == 4 || action == 6) {
1479                         action_param.disabled = false;
1480                 } else {
1481                         action_param.disabled = true;
1482                 }
1483
1484         } catch (e) {
1485                 exception_error("filterDlgCheckAction", e);
1486         }
1487
1488 }
1489
1490 function explainError(code) {
1491         return displayDlg("explainError", code);
1492 }
1493
1494 // this only searches loaded headlines list, not in CDM
1495 function getRelativePostIds(id, limit) {
1496
1497         if (!limit) limit = 3;
1498
1499         debug("getRelativePostIds: " + id + " limit=" + limit);
1500
1501         var ids = new Array();
1502         var container = document.getElementById("headlinesList");
1503
1504         if (container) {
1505                 var rows = container.rows;
1506
1507                 for (var i = 0; i < rows.length; i++) {
1508                         var r_id = rows[i].id.replace("RROW-", "");
1509
1510                         if (r_id == id) {
1511 /*                              if (i > 0) ids.push(rows[i-1].id.replace("RROW-", ""));
1512                                 if (i > 1) ids.push(rows[i-2].id.replace("RROW-", ""));
1513                                 if (i > 2) ids.push(rows[i-3].id.replace("RROW-", ""));
1514
1515                                 if (i < rows.length-1) ids.push(rows[i+1].id.replace("RROW-", ""));
1516                                 if (i < rows.length-2) ids.push(rows[i+2].id.replace("RROW-", ""));
1517                                 if (i < rows.length-3) ids.push(rows[i+3].id.replace("RROW-", "")); */
1518
1519                                 for (var k = 1; k <= limit; k++) {
1520                                         var nid = false;
1521
1522                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1523                                         if (nid) ids.push(nid);
1524
1525                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1526                                         if (nid) ids.push(nid);
1527                                 }
1528
1529                                 return ids;
1530                         }
1531                 }
1532         }
1533
1534         return false;
1535 }
1536
1537 function openArticleInNewWindow(id) {
1538         try {
1539                 debug("openArticleInNewWindow: " + id);
1540
1541                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1542                 var wname = "ttrss_article_" + id;
1543
1544                 debug(query + " " + wname);
1545
1546                 var w = window.open("", wname);
1547
1548                 if (!w) notify_error("Failed to open window for the article");
1549
1550                 new Ajax.Request(query, {
1551                         onComplete: function(transport) {
1552                                 open_article_callback(transport);
1553                         } });
1554
1555
1556         } catch (e) {
1557                 exception_error("openArticleInNewWindow", e);
1558         }
1559 }
1560
1561 /* http://textsnippets.com/posts/show/835 */
1562
1563 Position.GetWindowSize = function(w) {
1564         w = w ? w : window;
1565         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1566         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1567         return [width, height]
1568 }
1569
1570 /* http://textsnippets.com/posts/show/836 */
1571
1572 Position.Center = function(element, parent) {
1573         var w, h, pw, ph;
1574         var d = Element.getDimensions(element);
1575         w = d.width;
1576         h = d.height;
1577         Position.prepare();
1578         if (!parent) {
1579                 var ws = Position.GetWindowSize();
1580                 pw = ws[0];
1581                 ph = ws[1];
1582         } else {
1583                 pw = parent.offsetWidth;
1584                 ph = parent.offsetHeight;
1585         }
1586         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1587         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1588 }
1589
1590
1591 function labeltest_callback(transport) {
1592         try {
1593                 var container = document.getElementById('label_test_result');
1594
1595                 container.innerHTML = transport.responseText;
1596                 if (!Element.visible(container)) {
1597                         Effect.SlideDown(container, { duration : 0.5 });
1598                 }
1599
1600                 notify("");
1601         } catch (e) {
1602                 exception_error("labeltest_callback", e);
1603         }
1604 }
1605
1606 function labelTest() {
1607
1608         try {
1609                 var container = document.getElementById('label_test_result');
1610
1611                 var form = document.forms['label_edit_form'];
1612
1613                 var sql_exp = form.sql_exp.value;
1614                 var description = form.description.value;
1615
1616                 notify_progress("Loading, please wait...");
1617
1618                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1619                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1620
1621                 new Ajax.Request(query, {
1622                         onComplete: function (transport) {
1623                                 labeltest_callback(transport);
1624                         } });
1625
1626                 return false;
1627
1628         } catch (e) {
1629                 exception_error("labelTest", e);
1630         }
1631 }
1632
1633 function isCdmMode() {
1634         return !document.getElementById("headlinesList");
1635 }
1636
1637 function getSelectedArticleIds2() {
1638         var rows = new Array();
1639         var cdm_mode = isCdmMode();
1640
1641         if (cdm_mode) {
1642                 rows = cdmGetSelectedArticles();
1643         } else {
1644                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1645         }
1646
1647         var ids = new Array();
1648
1649         for (var i = 0; i < rows.length; i++) {
1650                 var chk = document.getElementById("RCHK-" + rows[i]);
1651                 if (chk && chk.checked) {
1652                         ids.push(rows[i]);
1653                 }
1654         }
1655
1656         return ids;
1657 }
1658
1659 function displayHelpInfobox(topic_id) {
1660
1661         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1662
1663         var w = window.open(url, "ttrss_help",
1664                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1665
1666         return false;
1667 }
1668
1669 function focus_element(id) {
1670         try {
1671                 var e = document.getElementById(id);
1672                 if (e) e.focus();
1673         } catch (e) {
1674                 exception_error("focus_element", e);
1675         }
1676         return false;
1677 }
1678
1679 function loading_set_progress(p) {
1680         try {
1681                 if (p < last_progress_point || !Element.visible("overlay")) return;
1682
1683                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1684
1685                 var o = document.getElementById("l_progress_i");
1686
1687 //              o.style.width = (p * 2) + "px";
1688
1689                 new Effect.Scale(o, p, {
1690                         scaleY : false,
1691                         scaleFrom : last_progress_point,
1692                         scaleMode: { originalWidth : 200 },
1693                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1694
1695                 last_progress_point = p;
1696
1697         } catch (e) {
1698                 exception_error("loading_set_progress", e);
1699         }
1700 }