functions.js

   1 var hotkeys_enabled = true;
   2 var xmlhttp_rpc = Ajax.getTransport();
   3 var notify_silent = false;
   4 var last_progress_point = 0;
   5 var async_counters_work = false;
   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 is_opera() {
  16         return window.opera;
  17 }
  18
  19 function exception_error(location, e, silent) {
  20         var msg;
  21
  22         if (e.fileName) {
  23                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  24
  25                 msg = "Exception: " + e.name + ", " + e.message +
  26                         "\nFunction: " + location + "()" +
  27                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  28
  29         } else if (e.description) {
  30                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  31         } else {
  32                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  33         }
  34
  35         debug("<b>EXCEPTION: " + msg + "</b>");
  36
  37         if (!silent) {
  38                 alert(msg);
  39         }
  40 }
  41
  42 function disableHotkeys() {
  43         hotkeys_enabled = false;
  44 }
  45
  46 function enableHotkeys() {
  47         hotkeys_enabled = true;
  48 }
  49
  50 function xmlhttp_ready(obj) {
  51         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  52 }
  53
  54 function open_article_callback(transport) {
  55         try {
  56
  57                 if (transport.responseXML) {
  58
  59                         var link = transport.responseXML.getElementsByTagName("link")[0];
  60                         var id = transport.responseXML.getElementsByTagName("id")[0];
  61
  62                         debug("open_article_callback, received link: " + link);
  63
  64                         if (link && id) {
  65
  66                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
  67
  68                                 debug("link url: " + link.firstChild.nodeValue + ", wname " + wname);
  69
  70                                 var w = window.open(link.firstChild.nodeValue, wname);
  71
  72                                 if (!w) { notify_error("Failed to load article in new window"); }
  73
  74                                 if (id) {
  75                                         id = id.firstChild.nodeValue;
  76                                         if (!document.getElementById("headlinesList")) {
  77                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
  78                                         }
  79                                 }
  80                         } else {
  81                                 notify_error("Can't open article: received invalid article link");
  82                         }
  83                 } else {
  84                         notify_error("Can't open article: received invalid XML");
  85                 }
  86
  87         } catch (e) {
  88                 exception_error("open_article_callback", e);
  89         }
  90 }
  91
  92 function param_escape(arg) {
  93         if (typeof encodeURIComponent != 'undefined')
  94                 return encodeURIComponent(arg);
  95         else
  96                 return escape(arg);
  97 }
  98
  99 function param_unescape(arg) {
 100         if (typeof decodeURIComponent != 'undefined')
 101                 return decodeURIComponent(arg);
 102         else
 103                 return unescape(arg);
 104 }
 105
 106 function delay(gap) {
 107         var then,now;
 108         then=new Date().getTime();
 109         now=then;
 110         while((now-then)<gap) {
 111                 now=new Date().getTime();
 112         }
 113 }
 114
 115 var notify_hide_timerid = false;
 116
 117 function hide_notify() {
 118         var n = document.getElementById("notify");
 119         if (n) {
 120                 n.style.display = "none";
 121         }
 122 }
 123
 124 function notify_silent_next() {
 125         notify_silent = true;
 126 }
 127
 128 function notify_real(msg, no_hide, n_type) {
 129
 130         if (notify_silent) {
 131                 notify_silent = false;
 132                 return;
 133         }
 134
 135         var n = document.getElementById("notify");
 136         var nb = document.getElementById("notify_body");
 137
 138         if (!n || !nb) return;
 139
 140         if (notify_hide_timerid) {
 141                 window.clearTimeout(notify_hide_timerid);
 142         }
 143
 144         if (msg == "") {
 145                 if (n.style.display == "block") {
 146                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 147                 }
 148                 return;
 149         } else {
 150                 n.style.display = "block";
 151         }
 152
 153         /* types:
 154
 155                 1 - generic
 156                 2 - progress
 157                 3 - error
 158                 4 - info
 159
 160         */
 161
 162         if (typeof __ != 'undefined') {
 163                 msg = __(msg);
 164         }
 165
 166         if (n_type == 1) {
 167                 n.className = "notify";
 168         } else if (n_type == 2) {
 169                 n.className = "notifyProgress";
 170                 msg = "<img src='images/indicator_white.gif'> " + msg;
 171         } else if (n_type == 3) {
 172                 n.className = "notifyError";
 173                 msg = "<img src='images/sign_excl.gif'> " + msg;
 174         } else if (n_type == 4) {
 175                 n.className = "notifyInfo";
 176                 msg = "<img src='images/sign_info.gif'> " + msg;
 177         }
 178
 179 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 180
 181         nb.innerHTML = msg;
 182
 183         if (!no_hide) {
 184                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 185         }
 186 }
 187
 188 function notify(msg, no_hide) {
 189         notify_real(msg, no_hide, 1);
 190 }
 191
 192 function notify_progress(msg, no_hide) {
 193         notify_real(msg, no_hide, 2);
 194 }
 195
 196 function notify_error(msg, no_hide) {
 197         notify_real(msg, no_hide, 3);
 198
 199 }
 200
 201 function notify_info(msg, no_hide) {
 202         notify_real(msg, no_hide, 4);
 203 }
 204
 205 function printLockingError() {
 206         notify_info("Please wait until operation finishes.");
 207 }
 208
 209 function cleanSelected(element) {
 210         var content = document.getElementById(element);
 211
 212         for (i = 0; i < content.rows.length; i++) {
 213                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 214         }
 215 }
 216
 217 function getVisibleUnreadHeadlines() {
 218         var content = document.getElementById("headlinesList");
 219
 220         var rows = new Array();
 221
 222         if (!content) return rows;
 223
 224         for (i = 0; i < content.rows.length; i++) {
 225                 var row_id = content.rows[i].id.replace("RROW-", "");
 226                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 227                                 rows.push(row_id);
 228                 }
 229         }
 230         return rows;
 231 }
 232
 233 function getVisibleHeadlineIds() {
 234
 235         var content = document.getElementById("headlinesList");
 236
 237         var rows = new Array();
 238
 239         if (!content) return rows;
 240
 241         for (i = 0; i < content.rows.length; i++) {
 242                 var row_id = content.rows[i].id.replace("RROW-", "");
 243                 if (row_id.length > 0) {
 244                                 rows.push(row_id);
 245                 }
 246         }
 247         return rows;
 248 }
 249
 250 function getFirstVisibleHeadlineId() {
 251         if (isCdmMode()) {
 252                 var rows = cdmGetVisibleArticles();
 253                 return rows[0];
 254         } else {
 255                 var rows = getVisibleHeadlineIds();
 256                 return rows[0];
 257         }
 258 }
 259
 260 function getLastVisibleHeadlineId() {
 261         if (isCdmMode()) {
 262                 var rows = cdmGetVisibleArticles();
 263                 return rows[rows.length-1];
 264         } else {
 265                 var rows = getVisibleHeadlineIds();
 266                 return rows[rows.length-1];
 267         }
 268 }
 269
 270 function markHeadline(id) {
 271         var row = document.getElementById("RROW-" + id);
 272         if (row) {
 273                 var is_active = false;
 274
 275                 if (row.className.match("Active")) {
 276                         is_active = true;
 277                 }
 278                 row.className = row.className.replace("Selected", "");
 279                 row.className = row.className.replace("Active", "");
 280                 row.className = row.className.replace("Insensitive", "");
 281
 282                 if (is_active) {
 283                         row.className = row.className = "Active";
 284                 }
 285
 286                 var check = document.getElementById("RCHK-" + id);
 287
 288                 if (check) {
 289                         check.checked = true;
 290                 }
 291
 292                 row.className = row.className + "Selected";
 293
 294         }
 295 }
 296
 297 function getFeedIds() {
 298         var content = document.getElementById("feedsList");
 299
 300         var rows = new Array();
 301
 302         for (i = 0; i < content.rows.length; i++) {
 303                 var id = content.rows[i].id.replace("FEEDR-", "");
 304                 if (id.length > 0) {
 305                         rows.push(id);
 306                 }
 307         }
 308
 309         return rows;
 310 }
 311
 312 function setCookie(name, value, lifetime, path, domain, secure) {
 313
 314         var d = false;
 315
 316         if (lifetime) {
 317                 d = new Date();
 318                 d.setTime(d.getTime() + (lifetime * 1000));
 319         }
 320
 321         debug("setCookie: " + name + " => " + value + ": " + d);
 322
 323         int_setCookie(name, value, d, path, domain, secure);
 324
 325 }
 326
 327 function int_setCookie(name, value, expires, path, domain, secure) {
 328         document.cookie= name + "=" + escape(value) +
 329                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 330                 ((path) ? "; path=" + path : "") +
 331                 ((domain) ? "; domain=" + domain : "") +
 332                 ((secure) ? "; secure" : "");
 333 }
 334
 335 function delCookie(name, path, domain) {
 336         if (getCookie(name)) {
 337                 document.cookie = name + "=" +
 338                 ((path) ? ";path=" + path : "") +
 339                 ((domain) ? ";domain=" + domain : "" ) +
 340                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 341         }
 342 }
 343
 344
 345 function getCookie(name) {
 346
 347         var dc = document.cookie;
 348         var prefix = name + "=";
 349         var begin = dc.indexOf("; " + prefix);
 350         if (begin == -1) {
 351             begin = dc.indexOf(prefix);
 352             if (begin != 0) return null;
 353         }
 354         else {
 355             begin += 2;
 356         }
 357         var end = document.cookie.indexOf(";", begin);
 358         if (end == -1) {
 359             end = dc.length;
 360         }
 361         return unescape(dc.substring(begin + prefix.length, end));
 362 }
 363
 364 function disableContainerChildren(id, disable, doc) {
 365
 366         if (!doc) doc = document;
 367
 368         var container = doc.getElementById(id);
 369
 370         if (!container) {
 371                 //alert("disableContainerChildren: element " + id + " not found");
 372                 return;
 373         }
 374
 375         for (var i = 0; i < container.childNodes.length; i++) {
 376                 var child = container.childNodes[i];
 377
 378                 try {
 379                         child.disabled = disable;
 380                 } catch (E) {
 381
 382                 }
 383
 384                 if (disable) {
 385                         if (child.className && child.className.match("button")) {
 386                                 child.className = "disabledButton";
 387                         }
 388                 } else {
 389                         if (child.className && child.className.match("disabledButton")) {
 390                                 child.className = "button";
 391                         }
 392                 }
 393         }
 394
 395 }
 396
 397 function gotoPreferences() {
 398         document.location.href = "prefs.php";
 399 }
 400
 401 function gotoMain() {
 402         document.location.href = "tt-rss.php";
 403 }
 404
 405 function gotoExportOpml() {
 406         document.location.href = "opml.php?op=Export";
 407 }
 408
 409 function getActiveFeedId() {
 410 //      return getCookie("ttrss_vf_actfeed");
 411         try {
 412                 debug("gAFID: " + active_feed_id);
 413                 return active_feed_id;
 414         } catch (e) {
 415                 exception_error("getActiveFeedId", e);
 416         }
 417 }
 418
 419 function activeFeedIsCat() {
 420         return active_feed_is_cat;
 421 }
 422
 423 function setActiveFeedId(id) {
 424 //      return setCookie("ttrss_vf_actfeed", id);
 425         try {
 426                 debug("sAFID(" + id + ")");
 427                 active_feed_id = id;
 428         } catch (e) {
 429                 exception_error("setActiveFeedId", e);
 430         }
 431 }
 432
 433 function parse_counters(reply, scheduled_call) {
 434         try {
 435
 436                 var feeds_found = 0;
 437
 438                 var elems = reply.getElementsByTagName("counter");
 439
 440                 for (var l = 0; l < elems.length; l++) {
 441
 442                         var id = elems[l].getAttribute("id");
 443                         var t = elems[l].getAttribute("type");
 444                         var ctr = elems[l].getAttribute("counter");
 445                         var error = elems[l].getAttribute("error");
 446                         var has_img = elems[l].getAttribute("hi");
 447                         var updated = elems[l].getAttribute("updated");
 448                         var title = elems[l].getAttribute("title");
 449                         var xmsg = elems[l].getAttribute("xmsg");
 450
 451                         if (id == "global-unread") {
 452                                 global_unread = ctr;
 453                                 updateTitle();
 454                                 continue;
 455                         }
 456
 457                         if (id == "subscribed-feeds") {
 458                                 feeds_found = ctr;
 459                                 continue;
 460                         }
 461
 462                         if (t == "category") {
 463                                 var catctr = document.getElementById("FCATCTR-" + id);
 464                                 if (catctr) {
 465                                         catctr.innerHTML = "(" + ctr + ")";
 466                                         if (ctr > 0) {
 467                                                 catctr.className = "catCtrHasUnread";
 468                                         } else {
 469                                                 catctr.className = "catCtrNoUnread";
 470                                         }
 471                                 }
 472                                 continue;
 473                         }
 474
 475                         var feedctr = document.getElementById("FEEDCTR-" + id);
 476                         var feedu = document.getElementById("FEEDU-" + id);
 477                         var feedr = document.getElementById("FEEDR-" + id);
 478                         var feed_img = document.getElementById("FIMG-" + id);
 479                         var feedlink = document.getElementById("FEEDL-" + id);
 480                         var feedupd = document.getElementById("FLUPD-" + id);
 481
 482                         if (updated && feedlink) {
 483                                 if (error) {
 484                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 485                                 } else {
 486                                         feedlink.title = "Updated: " + updated;
 487                                 }
 488                         }
 489
 490                         if (feedupd) {
 491                                 if (!updated) updated = "";
 492
 493                                 if (error) {
 494                                         if (xmsg) {
 495                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 496                                         } else {
 497                                                 feedupd.innerHTML = updated + " (Error)";
 498                                         }
 499                                 } else {
 500                                         if (xmsg) {
 501                                                 feedupd.innerHTML = updated + " " + xmsg;
 502                                         } else {
 503                                                 feedupd.innerHTML = updated;
 504                                         }
 505                                 }
 506                         }
 507
 508                         if (has_img && feed_img) {
 509                                 if (!feed_img.src.match(id + ".ico")) {
 510                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 511                                 }
 512                         }
 513
 514                         if (feedlink && title) {
 515                                 feedlink.innerHTML = title;
 516                         }
 517
 518                         if (feedctr && feedu && feedr) {
 519
 520                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 521                                         viewCurrentFeed();
 522                                 }
 523
 524                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 525
 526                                 feedu.innerHTML = ctr;
 527
 528                                 if (error) {
 529                                         feedr.className = feedr.className.replace("feed", "error");
 530                                 } else if (id > 0) {
 531                                         feedr.className = feedr.className.replace("error", "feed");
 532                                 }
 533
 534                                 if (ctr > 0) {
 535                                         feedctr.className = "feedCtrHasUnread";
 536                                         if (!feedr.className.match("Unread")) {
 537                                                 var is_selected = feedr.className.match("Selected");
 538
 539                                                 feedr.className = feedr.className.replace("Selected", "");
 540                                                 feedr.className = feedr.className.replace("Unread", "");
 541
 542                                                 feedr.className = feedr.className + "Unread";
 543
 544                                                 if (is_selected) {
 545                                                         feedr.className = feedr.className + "Selected";
 546                                                 }
 547
 548                                         }
 549
 550                                         if (row_needs_hl) {
 551                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 552                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 553                                         }
 554                                 } else {
 555                                         feedctr.className = "feedCtrNoUnread";
 556                                         feedr.className = feedr.className.replace("Unread", "");
 557                                 }
 558                         }
 559                 }
 560
 561                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 562
 563                 var feeds_stored = number_of_feeds;
 564
 565                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 566
 567                 if (feeds_stored != feeds_found) {
 568                         number_of_feeds = feeds_found;
 569
 570                         if (feeds_stored != 0 && feeds_found != 0) {
 571                                 debug("Subscribed feed number changed, refreshing feedlist");
 572                                 setTimeout('updateFeedList(false, false)', 50);
 573                         }
 574                 }
 575
 576         } catch (e) {
 577                 exception_error("parse_counters", e);
 578         }
 579 }
 580
 581 function parse_counters_reply(transport, scheduled_call) {
 582
 583         if (!transport.responseXML) {
 584                 notify_error("Backend did not return valid XML", true);
 585                 return;
 586         }
 587
 588         var reply = transport.responseXML.firstChild;
 589
 590         if (!reply) {
 591                 notify_error("Backend did not return expected XML object", true);
 592                 updateTitle("");
 593                 return;
 594         }
 595
 596         var error_code = false;
 597         var error_msg = false;
 598
 599         if (reply.firstChild) {
 600                 error_code = reply.firstChild.getAttribute("error-code");
 601                 error_msg = reply.firstChild.getAttribute("error-msg");
 602         }
 603
 604         if (!error_code) {
 605                 error_code = reply.getAttribute("error-code");
 606                 error_msg = reply.getAttribute("error-msg");
 607         }
 608
 609         if (error_code && error_code != 0) {
 610                 debug("refetch_callback: got error code " + error_code);
 611                 return fatalError(error_code, error_msg);
 612         }
 613
 614         var counters = reply.getElementsByTagName("counters")[0];
 615
 616         parse_counters(counters, scheduled_call);
 617
 618         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 619
 620         parse_runtime_info(runtime_info);
 621
 622         if (feedsSortByUnread()) {
 623                 resort_feedlist();
 624         }
 625
 626         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 627
 628 }
 629
 630 function all_counters_callback2(transport, async_call) {
 631         try {
 632                 if (async_call) async_counters_work = true;
 633
 634                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 635                 parse_counters_reply(transport);
 636                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 637
 638         } catch (e) {
 639                 exception_error("all_counters_callback2", e);
 640         }
 641 }
 642
 643 function get_feed_unread(id) {
 644         try {
 645                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 646         } catch (e) {
 647                 exception_error("get_feed_unread", e, true);
 648                 return -1;
 649         }
 650 }
 651
 652 function get_cat_unread(id) {
 653         try {
 654                 var ctr = document.getElementById("FCATCTR-" + id).innerHTML;
 655                 ctr = ctr.replace("(", "");
 656                 ctr = ctr.replace(")", "");
 657                 return parseInt(ctr);
 658         } catch (e) {
 659                 exception_error("get_feed_unread", e, true);
 660                 return -1;
 661         }
 662 }
 663
 664 function get_feed_entry_unread(elem) {
 665
 666         var id = elem.id.replace("FEEDR-", "");
 667
 668         if (id <= 0) {
 669                 return -1;
 670         }
 671
 672         try {
 673                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 674         } catch (e) {
 675                 return -1;
 676         }
 677 }
 678
 679 function get_feed_entry_name(elem) {
 680         var id = elem.id.replace("FEEDR-", "");
 681         return getFeedName(id);
 682 }
 683
 684
 685 function resort_category(node) {
 686
 687         try {
 688
 689                 debug("resort_category: " + node);
 690
 691                 var by_unread = feedsSortByUnread();
 692
 693                 var list = node.getElementsByTagName("LI");
 694
 695                 for (i = 0; i < list.length; i++) {
 696
 697                         for (j = i+1; j < list.length; j++) {
 698
 699                                 var tmp_val = get_feed_entry_unread(list[i]);
 700                                 var cur_val = get_feed_entry_unread(list[j]);
 701
 702                                 var tmp_name = get_feed_entry_name(list[i]);
 703                                 var cur_name = get_feed_entry_name(list[j]);
 704
 705                                 if ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name))) {
 706                                         tempnode_i = list[i].cloneNode(true);
 707                                         tempnode_j = list[j].cloneNode(true);
 708                                         node.replaceChild(tempnode_i, list[j]);
 709                                         node.replaceChild(tempnode_j, list[i]);
 710                                 }
 711                         }
 712                 }
 713
 714         } catch (e) {
 715                 exception_error("resort_category", e);
 716         }
 717
 718 }
 719
 720 function resort_feedlist() {
 721         debug("resort_feedlist");
 722
 723         if (document.getElementById("FCATLIST--1")) {
 724
 725                 var lists = document.getElementsByTagName("UL");
 726
 727                 for (var i = 0; i < lists.length; i++) {
 728                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 729                                 resort_category(lists[i]);
 730                         }
 731                 }
 732
 733         } else {
 734                 resort_category(document.getElementById("feedList"));
 735         }
 736 }
 737
 738 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 739   * * @author Sundar Dorai-Raj
 740   * * Email: sdoraira@vt.edu
 741   * * This program is free software; you can redistribute it and/or
 742   * * modify it under the terms of the GNU General Public License
 743   * * as published by the Free Software Foundation; either version 2
 744   * * of the License, or (at your option) any later version,
 745   * * provided that any use properly credits the author.
 746   * * This program is distributed in the hope that it will be useful,
 747   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 748   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 749   * * GNU General Public License for more details at http://www.gnu.org * * */
 750
 751   var numbers=".0123456789";
 752   function isNumeric(x) {
 753     // is x a String or a character?
 754     if(x.length>1) {
 755       // remove negative sign
 756       x=Math.abs(x)+"";
 757       for(j=0;j<x.length;j++) {
 758         // call isNumeric recursively for each character
 759         number=isNumeric(x.substring(j,j+1));
 760         if(!number) return number;
 761       }
 762       return number;
 763     }
 764     else {
 765       // if x is number return true
 766       if(numbers.indexOf(x)>=0) return true;
 767       return false;
 768     }
 769   }
 770
 771
 772 function hideOrShowFeeds(hide) {
 773
 774         try {
 775
 776         debug("hideOrShowFeeds: " + hide);
 777
 778         if (document.getElementById("FCATLIST--1")) {
 779
 780                 var lists = document.getElementsByTagName("UL");
 781
 782                 for (var i = 0; i < lists.length; i++) {
 783                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 784
 785                                 var id = lists[i].id.replace("FCATLIST-", "");
 786                                 hideOrShowFeedsCategory(id, hide);
 787                         }
 788                 }
 789
 790         } else {
 791                 hideOrShowFeedsCategory(null, hide);
 792         }
 793
 794         } catch (e) {
 795                 exception_error("hideOrShowFeeds", e);
 796         }
 797 }
 798
 799 function hideOrShowFeedsCategory(id, hide) {
 800
 801         try {
 802
 803                 var node = null;
 804                 var cat_node = null;
 805
 806                 if (id) {
 807                         node = document.getElementById("FCATLIST-" + id);
 808                         cat_node = document.getElementById("FCAT-" + id);
 809                 } else {
 810                         node = document.getElementById("feedList"); // no categories
 811                 }
 812
 813         //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 814
 815                 var cat_unread = 0;
 816
 817                 if (!node) {
 818                         debug("hideOrShowFeeds: passed node is null, aborting");
 819                         return;
 820                 }
 821
 822         //      debug("cat: " + node.id);
 823
 824                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 825                         for (i = 0; i < node.childNodes.length; i++) {
 826                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 827
 828                                 if (node.childNodes[i].style != undefined) {
 829
 830                                         var has_unread = (node.childNodes[i].className != "feed" &&
 831                                                 node.childNodes[i].className != "label" &&
 832                                                 !(!getInitParam("hide_read_shows_special") &&
 833                                                         node.childNodes[i].className == "virt") &&
 834                                                 node.childNodes[i].className != "error" &&
 835                                                 node.childNodes[i].className != "tag");
 836
 837         //                              debug(node.childNodes[i].id + " --> " + has_unread);
 838
 839                                         if (hide && !has_unread) {
 840                                                 //node.childNodes[i].style.display = "none";
 841                                                 var id = node.childNodes[i].id;
 842                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 843                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 844                                         }
 845
 846                                         if (!hide) {
 847                                                 node.childNodes[i].style.display = "list-item";
 848                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 849                                         }
 850
 851                                         if (has_unread) {
 852                                                 node.childNodes[i].style.display = "list-item";
 853                                                 cat_unread++;
 854                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 855                                                 //Effect.Highlight(node.childNodes[i]);
 856                                         }
 857                                 }
 858                         }
 859                 }
 860
 861         //      debug("end cat: " + node.id + " unread " + cat_unread);
 862
 863                 if (cat_unread == 0) {
 864                         if (cat_node.style == undefined) {
 865                                 debug("ERROR: supplied cat_node " + cat_node +
 866                                         " has no styles. WTF?");
 867                                 return;
 868                         }
 869                         if (hide) {
 870                                 //cat_node.style.display = "none";
 871                                 Effect.Fade(cat_node, {duration : 0.3,
 872                                         queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 873                         } else {
 874                                 cat_node.style.display = "list-item";
 875                         }
 876                 } else {
 877                         try {
 878                                 cat_node.style.display = "list-item";
 879                         } catch (e) {
 880                                 debug(e);
 881                         }
 882                 }
 883
 884 //      debug("unread for category: " + cat_unread);
 885
 886         } catch (e) {
 887                 exception_error("hideOrShowFeedsCategory", e);
 888         }
 889 }
 890
 891 function selectTableRow(r, do_select) {
 892         r.className = r.className.replace("Selected", "");
 893
 894         if (do_select) {
 895                 r.className = r.className + "Selected";
 896         }
 897 }
 898
 899 function selectTableRowById(elem_id, check_id, do_select) {
 900
 901         try {
 902
 903                 var row = document.getElementById(elem_id);
 904
 905                 if (row) {
 906                         selectTableRow(row, do_select);
 907                 }
 908
 909                 var check = document.getElementById(check_id);
 910
 911                 if (check) {
 912                         check.checked = do_select;
 913                 }
 914         } catch (e) {
 915                 exception_error("selectTableRowById", e);
 916         }
 917 }
 918
 919 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 920         classcheck, reset_others) {
 921
 922         var content = document.getElementById(content_id);
 923
 924         if (!content) {
 925                 alert("[selectTableRows] Element " + content_id + " not found.");
 926                 return;
 927         }
 928
 929         for (i = 0; i < content.rows.length; i++) {
 930                 if (Element.visible(content.rows[i])) {
 931                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 932
 933                                 if (content.rows[i].id.match(prefix)) {
 934                                         selectTableRow(content.rows[i], do_select);
 935
 936                                         var row_id = content.rows[i].id.replace(prefix, "");
 937                                         var check = document.getElementById(check_prefix + row_id);
 938
 939                                         if (check) {
 940                                                 check.checked = do_select;
 941                                         }
 942                                 } else if (reset_others) {
 943                                         selectTableRow(content.rows[i], false);
 944
 945                                         var row_id = content.rows[i].id.replace(prefix, "");
 946                                         var check = document.getElementById(check_prefix + row_id);
 947
 948                                         if (check) {
 949                                                 check.checked = false;
 950                                         }
 951
 952                                 }
 953                         } else if (reset_others) {
 954                                 selectTableRow(content.rows[i], false);
 955
 956                                 var row_id = content.rows[i].id.replace(prefix, "");
 957                                 var check = document.getElementById(check_prefix + row_id);
 958
 959                                 if (check) {
 960                                         check.checked = false;
 961                                 }
 962
 963                         }
 964                 }
 965         }
 966 }
 967
 968 function getSelectedTableRowIds(content_id, prefix) {
 969
 970         var content = document.getElementById(content_id);
 971
 972         if (!content) {
 973                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 974                 return;
 975         }
 976
 977         var sel_rows = new Array();
 978
 979         for (i = 0; i < content.rows.length; i++) {
 980                 if (content.rows[i].id.match(prefix) &&
 981                                 content.rows[i].className.match("Selected")) {
 982
 983                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 984                         sel_rows.push(row_id);
 985                 }
 986         }
 987
 988         return sel_rows;
 989
 990 }
 991
 992 function toggleSelectRowById(sender, id) {
 993         var row = document.getElementById(id);
 994
 995         if (sender.checked) {
 996                 if (!row.className.match("Selected")) {
 997                         row.className = row.className + "Selected";
 998                 }
 999         } else {
1000                 if (row.className.match("Selected")) {
1001                         row.className = row.className.replace("Selected", "");
1002                 }
1003         }
1004 }
1005
1006 function toggleSelectListRow(sender) {
1007         var parent_row = sender.parentNode;
1008
1009         if (sender.checked) {
1010                 if (!parent_row.className.match("Selected")) {
1011                         parent_row.className = parent_row.className + "Selected";
1012                 }
1013         } else {
1014                 if (parent_row.className.match("Selected")) {
1015                         parent_row.className = parent_row.className.replace("Selected", "");
1016                 }
1017         }
1018 }
1019
1020 function tSR(sender) {
1021         return toggleSelectRow(sender);
1022 }
1023
1024 function toggleSelectRow(sender) {
1025         var parent_row = sender.parentNode.parentNode;
1026
1027         if (sender.checked) {
1028                 if (!parent_row.className.match("Selected")) {
1029                         parent_row.className = parent_row.className + "Selected";
1030                 }
1031         } else {
1032                 if (parent_row.className.match("Selected")) {
1033                         parent_row.className = parent_row.className.replace("Selected", "");
1034                 }
1035         }
1036 }
1037
1038 function getNextUnreadCat(id) {
1039         try {
1040                 var rows = document.getElementById("feedList").getElementsByTagName("LI");
1041                 var feeds = new Array();
1042
1043                 var unread_only = true;
1044                 var is_cat = true;
1045
1046                 for (var i = 0; i < rows.length; i++) {
1047                         if (rows[i].id.match("FCAT-")) {
1048                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1049
1050                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1051
1052                                         if (cat_id >= 0) {
1053                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1054                                                         feeds.push(cat_id);
1055                                                 }
1056                                         }
1057                                 }
1058                         }
1059                 }
1060
1061                 var idx = feeds.indexOf(id);
1062                 if (idx != -1 && idx < feeds.length) {
1063                         return feeds[idx+1];
1064                 } else {
1065                         return feeds.shift();
1066                 }
1067
1068         } catch (e) {
1069                 exception_error("getNextUnreadCat", e);
1070         }
1071 }
1072
1073 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1074         try {
1075
1076 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1077
1078                 var rows = document.getElementById("feedList").getElementsByTagName("LI");
1079                 var feeds = new Array();
1080
1081                 for (var i = 0; i < rows.length; i++) {
1082                         if (rows[i].id.match("FEEDR-")) {
1083
1084                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1085
1086                                         if (!unread_only ||
1087                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1088                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1089                                         }
1090                                 }
1091                         }
1092
1093                         if (rows[i].id.match("FCAT-")) {
1094                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1095
1096                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1097
1098                                         if (cat_id >= 0) {
1099                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1100                                                         feeds.push("CAT:"+cat_id);
1101                                                 }
1102                                         }
1103                                 }
1104                         }
1105                 }
1106
1107 //              alert(feeds.toString());
1108
1109                 if (!id) {
1110                         if (direction == "next") {
1111                                 return feeds.shift();
1112                         } else {
1113                                 return feeds.pop();
1114                         }
1115                 } else {
1116                         if (direction == "next") {
1117                                 if (is_cat) id = "CAT:" + id;
1118                                 var idx = feeds.indexOf(id);
1119                                 if (idx != -1 && idx < feeds.length) {
1120                                         return feeds[idx+1];
1121                                 } else {
1122                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1123                                 }
1124                         } else {
1125                                 if (is_cat) id = "CAT:" + id;
1126                                 var idx = feeds.indexOf(id);
1127                                 if (idx > 0) {
1128                                         return feeds[idx-1];
1129                                 } else {
1130                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1131                                 }
1132                         }
1133
1134                 }
1135
1136         } catch (e) {
1137                 exception_error("getRelativeFeedId2", e);
1138         }
1139 }
1140
1141
1142 function getRelativeFeedId(list, id, direction, unread_only) {
1143         var rows = list.getElementsByTagName("LI");
1144         var feeds = new Array();
1145
1146         for (var i = 0; i < rows.length; i++) {
1147                 if (rows[i].id.match("FEEDR-")) {
1148
1149                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1150
1151                                 if (!unread_only ||
1152                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1153                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1154                                 }
1155                         }
1156                 }
1157         }
1158
1159         if (!id) {
1160                 if (direction == "next") {
1161                         return feeds.shift();
1162                 } else {
1163                         return feeds.pop();
1164                 }
1165         } else {
1166                 if (direction == "next") {
1167                         var idx = feeds.indexOf(id);
1168                         if (idx != -1 && idx < feeds.length) {
1169                                 return feeds[idx+1];
1170                         } else {
1171                                 return getRelativeFeedId(list, false, direction, unread_only);
1172                         }
1173                 } else {
1174                         var idx = feeds.indexOf(id);
1175                         if (idx > 0) {
1176                                 return feeds[idx-1];
1177                         } else {
1178                                 return getRelativeFeedId(list, false, direction, unread_only);
1179                         }
1180                 }
1181
1182         }
1183 }
1184
1185 function showBlockElement(id, h_id) {
1186         var elem = document.getElementById(id);
1187
1188         if (elem) {
1189                 elem.style.display = "block";
1190
1191                 if (h_id) {
1192                         elem = document.getElementById(h_id);
1193                         if (elem) {
1194                                 elem.style.display = "none";
1195                         }
1196                 }
1197         } else {
1198                 alert("[showBlockElement] can't find element with id " + id);
1199         }
1200 }
1201
1202 function appearBlockElement_afh(effect) {
1203
1204 }
1205
1206 function checkboxToggleElement(elem, id) {
1207         if (elem.checked) {
1208                 Effect.Appear(id, {duration : 0.5});
1209         } else {
1210                 Effect.Fade(id, {duration : 0.5});
1211         }
1212 }
1213
1214 function appearBlockElement(id, h_id) {
1215
1216         try {
1217                 if (h_id) {
1218                         Effect.Fade(h_id);
1219                 }
1220                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1221         } catch (e) {
1222                 exception_error("appearBlockElement", e);
1223         }
1224
1225 }
1226
1227 function hideParentElement(e) {
1228         e.parentNode.style.display = "none";
1229 }
1230
1231 function dropboxSelect(e, v) {
1232         for (i = 0; i < e.length; i++) {
1233                 if (e[i].value == v) {
1234                         e.selectedIndex = i;
1235                         break;
1236                 }
1237         }
1238 }
1239
1240 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1241 // bugfixed just a little bit :-)
1242 function getURLParam(strParamName){
1243   var strReturn = "";
1244   var strHref = window.location.href;
1245
1246   if (strHref.indexOf("#") == strHref.length-1) {
1247                 strHref = strHref.substring(0, strHref.length-1);
1248   }
1249
1250   if ( strHref.indexOf("?") > -1 ){
1251     var strQueryString = strHref.substr(strHref.indexOf("?"));
1252     var aQueryString = strQueryString.split("&");
1253     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1254       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1255         var aParam = aQueryString[iParam].split("=");
1256         strReturn = aParam[1];
1257         break;
1258       }
1259     }
1260   }
1261   return strReturn;
1262 }
1263
1264 function leading_zero(p) {
1265         var s = String(p);
1266         if (s.length == 1) s = "0" + s;
1267         return s;
1268 }
1269
1270 function closeInfoBox(cleanup) {
1271
1272         Element.hide("dialog_overlay");
1273
1274         var box = document.getElementById('infoBox');
1275         var shadow = document.getElementById('infoBoxShadow');
1276
1277         if (shadow) {
1278                 shadow.style.display = "none";
1279         } else if (box) {
1280                 box.style.display = "none";
1281         }
1282
1283         if (cleanup) box.innerHTML = "&nbsp;";
1284
1285         enableHotkeys();
1286
1287         return false;
1288 }
1289
1290
1291 function displayDlg(id, param) {
1292
1293         notify_progress("Loading, please wait...", true);
1294
1295         disableHotkeys();
1296
1297         var query = "backend.php?op=dlg&id=" +
1298                 param_escape(id) + "&param=" + param_escape(param);
1299
1300         new Ajax.Request(query, {
1301                 onComplete: function (transport) {
1302                         infobox_callback2(transport);
1303                 } });
1304
1305         return false;
1306 }
1307
1308 function infobox_submit_callback2(transport) {
1309         closeInfoBox();
1310
1311         try {
1312                 // called from prefs, reload tab
1313                 if (typeof active_tab != 'undefined' && active_tab) {
1314                         selectTab(active_tab, false);
1315                 }
1316         } catch (e) { }
1317
1318         if (transport.responseText) {
1319                 notify_info(transport.responseText);
1320         }
1321 }
1322
1323 function infobox_callback2(transport) {
1324         try {
1325
1326                 debug("infobox_callback2");
1327
1328                 if (!getInitParam("infobox_disable_overlay")) {
1329                         Element.show("dialog_overlay");
1330                 }
1331
1332                 var box = document.getElementById('infoBox');
1333                 var shadow = document.getElementById('infoBoxShadow');
1334                 if (box) {
1335
1336                         box.innerHTML=transport.responseText;
1337                         if (shadow) {
1338                                 shadow.style.display = "block";
1339                         } else {
1340                                 box.style.display = "block";
1341                         }
1342                 }
1343
1344                 /* FIXME this needs to be moved out somewhere */
1345
1346                 if (document.getElementById("tags_choices")) {
1347                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1348                                 "backend.php?op=rpc&subop=completeTags",
1349                                 { tokens: ',', paramName: "search" });
1350                 }
1351
1352                 disableHotkeys();
1353
1354                 notify("");
1355         } catch (e) {
1356                 exception_error("infobox_callback2", e);
1357         }
1358 }
1359
1360 function createFilter() {
1361
1362         try {
1363
1364                 var form = document.forms['filter_add_form'];
1365                 var reg_exp = form.reg_exp.value;
1366
1367                 if (reg_exp == "") {
1368                         alert(__("Can't add filter: nothing to match on."));
1369                         return false;
1370                 }
1371
1372                 var query = Form.serialize("filter_add_form");
1373
1374                 // we can be called from some other tab in Prefs
1375                 if (typeof active_tab != 'undefined' && active_tab) {
1376                         active_tab = "filterConfig";
1377                 }
1378
1379                 new Ajax.Request("backend.php?" + query, {
1380                         onComplete: function (transport) {
1381                                 infobox_submit_callback2(transport);
1382                         } });
1383
1384                 return true;
1385
1386         } catch (e) {
1387                 exception_error("createFilter", e);
1388         }
1389 }
1390
1391 function toggleSubmitNotEmpty(e, submit_id) {
1392         try {
1393                 document.getElementById(submit_id).disabled = (e.value == "")
1394         } catch (e) {
1395                 exception_error("toggleSubmitNotEmpty", e);
1396         }
1397 }
1398
1399 function isValidURL(s) {
1400         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1401 }
1402
1403 function subscribeToFeed() {
1404
1405         var form = document.forms['feed_add_form'];
1406         var feed_url = form.feed_url.value;
1407
1408         if (feed_url == "") {
1409                 alert(__("Can't subscribe: no feed URL given."));
1410                 return false;
1411         }
1412
1413         notify_progress(__("Subscribing to feed..."), true);
1414
1415         closeInfoBox();
1416
1417         var feeds_doc = document;
1418
1419 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1420
1421         var query = Form.serialize("feed_add_form");
1422
1423         debug("subscribe q: " + query);
1424
1425         new Ajax.Request("backend.php", {
1426                 parameters: query,
1427                 onComplete: function(transport) {
1428                         dlg_frefresh_callback(transport);
1429                 } });
1430
1431         return false;
1432 }
1433
1434 function filterCR(e, f)
1435 {
1436      var key;
1437
1438      if(window.event)
1439           key = window.event.keyCode;     //IE
1440      else
1441           key = e.which;     //firefox
1442
1443         if (key == 13) {
1444                 if (typeof f != 'undefined') {
1445                         f();
1446                         return false;
1447                 } else {
1448                         return false;
1449                 }
1450         } else {
1451                 return true;
1452         }
1453 }
1454
1455 var debug_last_class = "even";
1456
1457 function debug(msg) {
1458
1459         if (debug_last_class == "even") {
1460                 debug_last_class = "odd";
1461         } else {
1462                 debug_last_class = "even";
1463         }
1464
1465         var c = document.getElementById('debug_output');
1466         if (c && Element.visible(c)) {
1467                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1468                         c.removeChild(c.lastChild);
1469                 }
1470
1471                 var d = new Date();
1472                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1473                         ":" + leading_zero(d.getSeconds());
1474                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1475                         msg + "</li>" + c.innerHTML;
1476         }
1477 }
1478
1479 function getInitParam(key) {
1480         return init_params[key];
1481 }
1482
1483 function storeInitParam(key, value) {
1484         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1485         init_params[key] = value;
1486 }
1487
1488 function fatalError(code, message) {
1489         try {
1490
1491                 if (code == 6) {
1492                         window.location.href = "tt-rss.php";
1493                 } else if (code == 5) {
1494                         window.location.href = "update.php";
1495                 } else {
1496                         var fe = document.getElementById("fatal_error");
1497                         var fc = document.getElementById("fatal_error_msg");
1498
1499                         if (message == "") message = "Unknown error";
1500
1501                         fc.innerHTML = "<img src='images/sign_excl.gif'> " + message + " (Code " + code + ")";
1502
1503                         fe.style.display = "block";
1504                 }
1505
1506         } catch (e) {
1507                 exception_error("fatalError", e);
1508         }
1509 }
1510
1511 function getFeedName(id, is_cat) {
1512         var e;
1513
1514         if (is_cat) {
1515                 e = document.getElementById("FCATN-" + id);
1516         } else {
1517                 e = document.getElementById("FEEDN-" + id);
1518         }
1519         if (e) {
1520                 return e.innerHTML.stripTags();
1521         } else {
1522                 return null;
1523         }
1524 }
1525
1526 function filterDlgCheckAction(sender) {
1527
1528         try {
1529
1530                 var action = sender[sender.selectedIndex].value;
1531
1532                 var form = document.forms["filter_add_form"];
1533
1534                 if (!form) {
1535                         form = document.forms["filter_edit_form"];
1536                 }
1537
1538                 if (!form) {
1539                         debug("filterDlgCheckAction: can't find form!");
1540                         return;
1541                 }
1542
1543                 var action_param = document.getElementById("filter_dlg_param_box");
1544
1545                 if (!action_param) {
1546                         debug("filterDlgCheckAction: can't find action param box!");
1547                         return;
1548                 }
1549
1550                 // if selected action supports parameters, enable params field
1551                 if (action == 4 || action == 6) {
1552                         Element.show(action_param);
1553                 } else {
1554                         Element.hide(action_param);
1555                 }
1556
1557         } catch (e) {
1558                 exception_error("filterDlgCheckAction", e);
1559         }
1560
1561 }
1562
1563 function explainError(code) {
1564         return displayDlg("explainError", code);
1565 }
1566
1567 // this only searches loaded headlines list, not in CDM
1568 function getRelativePostIds(id, limit) {
1569
1570         if (!limit) limit = 3;
1571
1572         debug("getRelativePostIds: " + id + " limit=" + limit);
1573
1574         var ids = new Array();
1575         var container = document.getElementById("headlinesList");
1576
1577         if (container) {
1578                 var rows = container.rows;
1579
1580                 for (var i = 0; i < rows.length; i++) {
1581                         var r_id = rows[i].id.replace("RROW-", "");
1582
1583                         if (r_id == id) {
1584                                 for (var k = 1; k <= limit; k++) {
1585                                         var nid = false;
1586
1587                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1588                                         if (nid) ids.push(nid);
1589
1590                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1591                                         if (nid) ids.push(nid);
1592                                 }
1593
1594                                 return ids;
1595                         }
1596                 }
1597         }
1598
1599         return false;
1600 }
1601
1602 function openArticleInNewWindow(id) {
1603         try {
1604                 debug("openArticleInNewWindow: " + id);
1605
1606                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1607                 var wname = "ttrss_article_" + id;
1608
1609                 debug(query + " " + wname);
1610
1611                 var w = window.open("", wname);
1612
1613                 if (!w) notify_error("Failed to open window for the article");
1614
1615                 new Ajax.Request(query, {
1616                         onComplete: function(transport) {
1617                                 open_article_callback(transport);
1618                         } });
1619
1620
1621         } catch (e) {
1622                 exception_error("openArticleInNewWindow", e);
1623         }
1624 }
1625
1626 /* http://textsnippets.com/posts/show/835 */
1627
1628 Position.GetWindowSize = function(w) {
1629         w = w ? w : window;
1630         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1631         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1632         return [width, height]
1633 }
1634
1635 /* http://textsnippets.com/posts/show/836 */
1636
1637 Position.Center = function(element, parent) {
1638         var w, h, pw, ph;
1639         var d = Element.getDimensions(element);
1640         w = d.width;
1641         h = d.height;
1642         Position.prepare();
1643         if (!parent) {
1644                 var ws = Position.GetWindowSize();
1645                 pw = ws[0];
1646                 ph = ws[1];
1647         } else {
1648                 pw = parent.offsetWidth;
1649                 ph = parent.offsetHeight;
1650         }
1651         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1652         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1653 }
1654
1655
1656 function labeltest_callback(transport) {
1657         try {
1658                 var container = document.getElementById('label_test_result');
1659
1660                 container.innerHTML = transport.responseText;
1661                 if (!Element.visible(container)) {
1662                         Effect.SlideDown(container, { duration : 0.5 });
1663                 }
1664
1665                 notify("");
1666         } catch (e) {
1667                 exception_error("labeltest_callback", e);
1668         }
1669 }
1670
1671 function labelTest() {
1672
1673         try {
1674                 var container = document.getElementById('label_test_result');
1675
1676                 var form = document.forms['label_edit_form'];
1677
1678                 var sql_exp = form.sql_exp.value;
1679                 var description = form.description.value;
1680
1681                 notify_progress("Loading, please wait...");
1682
1683                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1684                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1685
1686                 new Ajax.Request(query, {
1687                         onComplete: function (transport) {
1688                                 labeltest_callback(transport);
1689                         } });
1690
1691                 return false;
1692
1693         } catch (e) {
1694                 exception_error("labelTest", e);
1695         }
1696 }
1697
1698 function isCdmMode() {
1699         return !document.getElementById("headlinesList");
1700 }
1701
1702 function getSelectedArticleIds2() {
1703         var rows = new Array();
1704         var cdm_mode = isCdmMode();
1705
1706         if (cdm_mode) {
1707                 rows = cdmGetSelectedArticles();
1708         } else {
1709                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1710         }
1711
1712         var ids = new Array();
1713
1714         for (var i = 0; i < rows.length; i++) {
1715                 var chk = document.getElementById("RCHK-" + rows[i]);
1716                 if (chk && chk.checked) {
1717                         ids.push(rows[i]);
1718                 }
1719         }
1720
1721         return ids;
1722 }
1723
1724 function displayHelpInfobox(topic_id) {
1725
1726         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1727
1728         var w = window.open(url, "ttrss_help",
1729                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1730
1731         return false;
1732 }
1733
1734 function focus_element(id) {
1735         try {
1736                 var e = document.getElementById(id);
1737                 if (e) e.focus();
1738         } catch (e) {
1739                 exception_error("focus_element", e);
1740         }
1741         return false;
1742 }
1743
1744 function loading_set_progress(p) {
1745         try {
1746                 if (p < last_progress_point || !Element.visible("overlay")) return;
1747
1748                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1749
1750                 var o = document.getElementById("l_progress_i");
1751
1752 //              o.style.width = (p * 2) + "px";
1753
1754                 new Effect.Scale(o, p, {
1755                         scaleY : false,
1756                         scaleFrom : last_progress_point,
1757                         scaleMode: { originalWidth : 200 },
1758                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1759
1760                 last_progress_point = p;
1761
1762         } catch (e) {
1763                 exception_error("loading_set_progress", e);
1764         }
1765 }
1766
1767 function remove_splash() {
1768         if (Element.visible("overlay")) {
1769                 debug("about to remove splash, OMG!");
1770                 Element.hide("overlay");
1771                 debug("removed splash!");
1772         }
1773 }
1774
1775 function addLabelExample() {
1776         try {
1777                 var form = document.forms["label_edit_form"];
1778
1779                 var text = form.sql_exp;
1780                 var op = form.label_fields[form.label_fields.selectedIndex];
1781                 var p = form.label_fields_param;
1782
1783                 if (op) {
1784                         op = op.value;
1785
1786                         var tmp = "";
1787
1788                         if (text.value != "") {
1789                                 if (text.value.substring(text.value.length-3, 3).toUpperCase() != "AND") {
1790                                         tmp = " AND ";
1791                                 } else {
1792                                         tmp = " ";
1793                                 }
1794                         }
1795
1796                         if (op == "unread") {
1797                                 tmp = tmp + "unread = true";
1798                         }
1799
1800                         if (op == "updated") {
1801                                 tmp = tmp + "last_read is null and unread = false";
1802                         }
1803
1804                         if (op == "kw_title") {
1805                                 if (p.value == "") {
1806                                         alert("This action requires a parameter.");
1807                                         return false;
1808                                 }
1809                                 tmp = tmp + "ttrss_entries.title like '%"+p.value+"%'";
1810                         }
1811
1812                         if (op == "kw_content") {
1813                                 if (p.value == "") {
1814                                         alert("This action requires a parameter.");
1815                                         return false;
1816                                 }
1817
1818                                 tmp = tmp + "ttrss_entries.content like '%"+p.value+"%'";
1819                         }
1820
1821                         if (op == "scoreE") {
1822                                 if (isNaN(parseInt(p.value))) {
1823                                         alert("This action expects numeric parameter.");
1824                                         return false;
1825                                 }
1826                                 tmp = tmp + "score = " + p.value;
1827                         }
1828
1829                         if (op == "scoreG") {
1830                                 if (isNaN(parseInt(p.value))) {
1831                                         alert("This action expects numeric parameter.");
1832                                         return false;
1833                                 }
1834                                 tmp = tmp + "score > " + p.value;
1835                         }
1836
1837                         if (op == "scoreL") {
1838                                 if (isNaN(parseInt(p.value))) {
1839                                         alert("This action expects numeric parameter.");
1840                                         return false;
1841                                 }
1842                                 tmp = tmp + "score < " + p.value;
1843                         }
1844
1845                         if (op == "newerD") {
1846                                 if (isNaN(parseInt(p.value))) {
1847                                         alert("This action expects numeric parameter.");
1848                                         return false;
1849                                 }
1850                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" days'";
1851                         }
1852
1853                         if (op == "newerH") {
1854                                 if (isNaN(parseInt(p.value))) {
1855                                         alert("This action expects numeric parameter.");
1856                                         return false;
1857                                 }
1858
1859                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" hours'";
1860                         }
1861
1862                         text.value = text.value + tmp;
1863
1864                         p.value = "";
1865
1866                 }
1867
1868         } catch (e) {
1869                 exception_error("addLabelExample", e);
1870         }
1871
1872         return false;
1873 }
1874
1875 function labelFieldsCheck(elem) {
1876         try {
1877                 var op = elem[elem.selectedIndex].value;
1878
1879                 var p = document.forms["label_edit_form"].label_fields_param;
1880
1881                 if (op == "kw_title" || op == "kw_content" || op == "scoreL" ||
1882                                 op == "scoreG" ||       op == "scoreE" || op == "newerD" ||
1883                                 op == "newerH" ) {
1884                         Element.show(p);
1885                 } else {
1886                         Element.hide(p);
1887                 }
1888
1889         } catch (e) {
1890                 exception_error("labelFieldsCheck", e);
1891
1892         }
1893 }