functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var last_progress_point = 0;
   4 var async_counters_work = false;
   5
   6 /* add method to remove element from array */
   7
   8 Array.prototype.remove = function(s) {
   9         for (var i=0; i < this.length; i++) {
  10                 if (s == this[i]) this.splice(i, 1);
  11         }
  12 }
  13
  14 function is_opera() {
  15         return window.opera;
  16 }
  17
  18 function exception_error(location, e, ext_info) {
  19         var msg = format_exception_error(location, e);
  20
  21         if (!ext_info) ext_info = "N/A";
  22
  23         disableHotkeys();
  24
  25         try {
  26
  27                 var ebc = $("xebContent");
  28
  29                 if (ebc) {
  30
  31                         Element.show("dialog_overlay");
  32                         Element.show("errorBoxShadow");
  33
  34                         if (ext_info) {
  35                                 if (ext_info.responseText) {
  36                                         ext_info = ext_info.responseText;
  37                                 }
  38                         }
  39
  40                         ebc.innerHTML =
  41                                 "<div><b>Error message:</b></div>" +
  42                                 "<pre>" + msg + "</pre>" +
  43                                 "<div><b>Additional information:</b></div>" +
  44                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  45
  46                 } else {
  47                         alert(msg);
  48                 }
  49
  50         } catch (e) {
  51                 alert(msg);
  52
  53         }
  54
  55 }
  56
  57 function format_exception_error(location, e) {
  58         var msg;
  59
  60         if (e.fileName) {
  61                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  62
  63                 msg = "Exception: " + e.name + ", " + e.message +
  64                         "\nFunction: " + location + "()" +
  65                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  66
  67         } else if (e.description) {
  68                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  69         } else {
  70                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  71         }
  72
  73         debug("<b>EXCEPTION: " + msg + "</b>");
  74
  75         return msg;
  76 }
  77
  78
  79 function disableHotkeys() {
  80         hotkeys_enabled = false;
  81 }
  82
  83 function enableHotkeys() {
  84         hotkeys_enabled = true;
  85 }
  86
  87 function open_article_callback(transport) {
  88         try {
  89
  90                 if (transport.responseXML) {
  91
  92                         var link = transport.responseXML.getElementsByTagName("link")[0];
  93                         var id = transport.responseXML.getElementsByTagName("id")[0];
  94
  95                         debug("open_article_callback, received link: " + link);
  96
  97                         if (link && id) {
  98
  99                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
 100
 101                                 debug("link url: " + link.firstChild.nodeValue + ", wname " + wname);
 102
 103                                 var w = window.open(link.firstChild.nodeValue, wname);
 104
 105                                 if (!w) { notify_error("Failed to load article in new window"); }
 106
 107                                 if (id) {
 108                                         id = id.firstChild.nodeValue;
 109                                         if (!$("headlinesList")) {
 110                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
 111                                         }
 112                                 }
 113                         } else {
 114                                 notify_error("Can't open article: received invalid article link");
 115                         }
 116                 } else {
 117                         notify_error("Can't open article: received invalid XML");
 118                 }
 119
 120         } catch (e) {
 121                 exception_error("open_article_callback", e);
 122         }
 123 }
 124
 125 function param_escape(arg) {
 126         if (typeof encodeURIComponent != 'undefined')
 127                 return encodeURIComponent(arg);
 128         else
 129                 return escape(arg);
 130 }
 131
 132 function param_unescape(arg) {
 133         if (typeof decodeURIComponent != 'undefined')
 134                 return decodeURIComponent(arg);
 135         else
 136                 return unescape(arg);
 137 }
 138
 139 function delay(gap) {
 140         var then,now;
 141         then=new Date().getTime();
 142         now=then;
 143         while((now-then)<gap) {
 144                 now=new Date().getTime();
 145         }
 146 }
 147
 148 var notify_hide_timerid = false;
 149
 150 function hide_notify() {
 151         var n = $("notify");
 152         if (n) {
 153                 n.style.display = "none";
 154         }
 155 }
 156
 157 function notify_silent_next() {
 158         notify_silent = true;
 159 }
 160
 161 function notify_real(msg, no_hide, n_type) {
 162
 163         if (notify_silent) {
 164                 notify_silent = false;
 165                 return;
 166         }
 167
 168         var n = $("notify");
 169         var nb = $("notify_body");
 170
 171         if (!n || !nb) return;
 172
 173         if (notify_hide_timerid) {
 174                 window.clearTimeout(notify_hide_timerid);
 175         }
 176
 177         if (msg == "") {
 178                 if (n.style.display == "block") {
 179                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 180                 }
 181                 return;
 182         } else {
 183                 n.style.display = "block";
 184         }
 185
 186         /* types:
 187
 188                 1 - generic
 189                 2 - progress
 190                 3 - error
 191                 4 - info
 192
 193         */
 194
 195         if (typeof __ != 'undefined') {
 196                 msg = __(msg);
 197         }
 198
 199         if (n_type == 1) {
 200                 n.className = "notify";
 201         } else if (n_type == 2) {
 202                 n.className = "notifyProgress";
 203                 msg = "<img src='images/indicator_white.gif'> " + msg;
 204         } else if (n_type == 3) {
 205                 n.className = "notifyError";
 206                 msg = "<img src='images/sign_excl.gif'> " + msg;
 207         } else if (n_type == 4) {
 208                 n.className = "notifyInfo";
 209                 msg = "<img src='images/sign_info.gif'> " + msg;
 210         }
 211
 212 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 213
 214         nb.innerHTML = msg;
 215
 216         if (!no_hide) {
 217                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 218         }
 219 }
 220
 221 function notify(msg, no_hide) {
 222         notify_real(msg, no_hide, 1);
 223 }
 224
 225 function notify_progress(msg, no_hide) {
 226         notify_real(msg, no_hide, 2);
 227 }
 228
 229 function notify_error(msg, no_hide) {
 230         notify_real(msg, no_hide, 3);
 231
 232 }
 233
 234 function notify_info(msg, no_hide) {
 235         notify_real(msg, no_hide, 4);
 236 }
 237
 238 function printLockingError() {
 239         notify_info("Please wait until operation finishes.");
 240 }
 241
 242 function cleanSelected(element) {
 243         var content = $(element);
 244
 245         for (i = 0; i < content.rows.length; i++) {
 246                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 247         }
 248 }
 249
 250 function getVisibleUnreadHeadlines() {
 251         var content = $("headlinesList");
 252
 253         var rows = new Array();
 254
 255         if (!content) return rows;
 256
 257         for (i = 0; i < content.rows.length; i++) {
 258                 var row_id = content.rows[i].id.replace("RROW-", "");
 259                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 260                                 rows.push(row_id);
 261                 }
 262         }
 263         return rows;
 264 }
 265
 266 function getVisibleHeadlineIds() {
 267
 268         var content = $("headlinesList");
 269
 270         var rows = new Array();
 271
 272         if (!content) return rows;
 273
 274         for (i = 0; i < content.rows.length; i++) {
 275                 var row_id = content.rows[i].id.replace("RROW-", "");
 276                 if (row_id.length > 0) {
 277                                 rows.push(row_id);
 278                 }
 279         }
 280         return rows;
 281 }
 282
 283 function getFirstVisibleHeadlineId() {
 284         if (isCdmMode()) {
 285                 var rows = cdmGetVisibleArticles();
 286                 return rows[0];
 287         } else {
 288                 var rows = getVisibleHeadlineIds();
 289                 return rows[0];
 290         }
 291 }
 292
 293 function getLastVisibleHeadlineId() {
 294         if (isCdmMode()) {
 295                 var rows = cdmGetVisibleArticles();
 296                 return rows[rows.length-1];
 297         } else {
 298                 var rows = getVisibleHeadlineIds();
 299                 return rows[rows.length-1];
 300         }
 301 }
 302
 303 function markHeadline(id) {
 304         var row = $("RROW-" + id);
 305         if (row) {
 306                 var is_active = false;
 307
 308                 if (row.className.match("Active")) {
 309                         is_active = true;
 310                 }
 311                 row.className = row.className.replace("Selected", "");
 312                 row.className = row.className.replace("Active", "");
 313                 row.className = row.className.replace("Insensitive", "");
 314
 315                 if (is_active) {
 316                         row.className = row.className = "Active";
 317                 }
 318
 319                 var check = $("RCHK-" + id);
 320
 321                 if (check) {
 322                         check.checked = true;
 323                 }
 324
 325                 row.className = row.className + "Selected";
 326
 327         }
 328 }
 329
 330 function getFeedIds() {
 331         var content = $("feedsList");
 332
 333         var rows = new Array();
 334
 335         for (i = 0; i < content.rows.length; i++) {
 336                 var id = content.rows[i].id.replace("FEEDR-", "");
 337                 if (id.length > 0) {
 338                         rows.push(id);
 339                 }
 340         }
 341
 342         return rows;
 343 }
 344
 345 function setCookie(name, value, lifetime, path, domain, secure) {
 346
 347         var d = false;
 348
 349         if (lifetime) {
 350                 d = new Date();
 351                 d.setTime(d.getTime() + (lifetime * 1000));
 352         }
 353
 354         debug("setCookie: " + name + " => " + value + ": " + d);
 355
 356         int_setCookie(name, value, d, path, domain, secure);
 357
 358 }
 359
 360 function int_setCookie(name, value, expires, path, domain, secure) {
 361         document.cookie= name + "=" + escape(value) +
 362                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 363                 ((path) ? "; path=" + path : "") +
 364                 ((domain) ? "; domain=" + domain : "") +
 365                 ((secure) ? "; secure" : "");
 366 }
 367
 368 function delCookie(name, path, domain) {
 369         if (getCookie(name)) {
 370                 document.cookie = name + "=" +
 371                 ((path) ? ";path=" + path : "") +
 372                 ((domain) ? ";domain=" + domain : "" ) +
 373                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 374         }
 375 }
 376
 377
 378 function getCookie(name) {
 379
 380         var dc = document.cookie;
 381         var prefix = name + "=";
 382         var begin = dc.indexOf("; " + prefix);
 383         if (begin == -1) {
 384             begin = dc.indexOf(prefix);
 385             if (begin != 0) return null;
 386         }
 387         else {
 388             begin += 2;
 389         }
 390         var end = document.cookie.indexOf(";", begin);
 391         if (end == -1) {
 392             end = dc.length;
 393         }
 394         return unescape(dc.substring(begin + prefix.length, end));
 395 }
 396
 397 function disableContainerChildren(id, disable, doc) {
 398
 399         if (!doc) doc = document;
 400
 401         var container = $(id);
 402
 403         if (!container) {
 404                 //alert("disableContainerChildren: element " + id + " not found");
 405                 return;
 406         }
 407
 408         for (var i = 0; i < container.childNodes.length; i++) {
 409                 var child = container.childNodes[i];
 410
 411                 try {
 412                         child.disabled = disable;
 413                 } catch (E) {
 414
 415                 }
 416
 417                 if (disable) {
 418                         if (child.className && child.className.match("button")) {
 419                                 child.className = "disabledButton";
 420                         }
 421                 } else {
 422                         if (child.className && child.className.match("disabledButton")) {
 423                                 child.className = "button";
 424                         }
 425                 }
 426         }
 427
 428 }
 429
 430 function gotoPreferences() {
 431         document.location.href = "prefs.php";
 432 }
 433
 434 function gotoMain() {
 435         document.location.href = "tt-rss.php";
 436 }
 437
 438 function gotoExportOpml() {
 439         document.location.href = "opml.php?op=Export";
 440 }
 441
 442 function parse_counters(reply, scheduled_call) {
 443         try {
 444
 445                 var feeds_found = 0;
 446
 447                 var elems = reply.getElementsByTagName("counter");
 448
 449                 for (var l = 0; l < elems.length; l++) {
 450
 451                         var id = elems[l].getAttribute("id");
 452                         var t = elems[l].getAttribute("type");
 453                         var ctr = elems[l].getAttribute("counter");
 454                         var error = elems[l].getAttribute("error");
 455                         var has_img = elems[l].getAttribute("hi");
 456                         var updated = elems[l].getAttribute("updated");
 457                         var title = elems[l].getAttribute("title");
 458                         var xmsg = elems[l].getAttribute("xmsg");
 459
 460                         if (id == "global-unread") {
 461
 462                                 if (ctr > global_unread) {
 463                                         offlineDownloadStart(1);
 464                                 }
 465
 466                                 global_unread = ctr;
 467                                 updateTitle();
 468                                 continue;
 469                         }
 470
 471                         if (id == "subscribed-feeds") {
 472                                 feeds_found = ctr;
 473                                 continue;
 474                         }
 475
 476                         if (t == "category") {
 477                                 var catctr = $("FCATCTR-" + id);
 478                                 if (catctr) {
 479                                         catctr.innerHTML = "(" + ctr + ")";
 480                                         if (ctr > 0) {
 481                                                 catctr.className = "catCtrHasUnread";
 482                                         } else {
 483                                                 catctr.className = "catCtrNoUnread";
 484                                         }
 485                                 }
 486                                 continue;
 487                         }
 488
 489                         var feedctr = $("FEEDCTR-" + id);
 490                         var feedu = $("FEEDU-" + id);
 491                         var feedr = $("FEEDR-" + id);
 492                         var feed_img = $("FIMG-" + id);
 493                         var feedlink = $("FEEDL-" + id);
 494                         var feedupd = $("FLUPD-" + id);
 495
 496                         if (updated && feedlink) {
 497                                 if (error) {
 498                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 499                                 } else {
 500                                         feedlink.title = "Updated: " + updated;
 501                                 }
 502                         }
 503
 504                         if (feedupd) {
 505                                 if (!updated) updated = "";
 506
 507                                 if (error) {
 508                                         if (xmsg) {
 509                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 510                                         } else {
 511                                                 feedupd.innerHTML = updated + " (Error)";
 512                                         }
 513                                 } else {
 514                                         if (xmsg) {
 515                                                 feedupd.innerHTML = updated + " " + xmsg;
 516                                         } else {
 517                                                 feedupd.innerHTML = updated;
 518                                         }
 519                                 }
 520                         }
 521
 522                         if (has_img && feed_img) {
 523                                 if (!feed_img.src.match(id + ".ico")) {
 524                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 525                                 }
 526                         }
 527
 528                         if (feedlink && title) {
 529                                 feedlink.innerHTML = title;
 530                         }
 531
 532                         if (feedctr && feedu && feedr) {
 533
 534                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 535                                         viewCurrentFeed();
 536                                 }
 537
 538                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 539
 540                                 feedu.innerHTML = ctr;
 541
 542                                 if (error) {
 543                                         feedr.className = feedr.className.replace("feed", "error");
 544                                 } else if (id > 0) {
 545                                         feedr.className = feedr.className.replace("error", "feed");
 546                                 }
 547
 548                                 if (ctr > 0) {
 549                                         feedctr.className = "feedCtrHasUnread";
 550                                         if (!feedr.className.match("Unread")) {
 551                                                 var is_selected = feedr.className.match("Selected");
 552
 553                                                 feedr.className = feedr.className.replace("Selected", "");
 554                                                 feedr.className = feedr.className.replace("Unread", "");
 555
 556                                                 feedr.className = feedr.className + "Unread";
 557
 558                                                 if (is_selected) {
 559                                                         feedr.className = feedr.className + "Selected";
 560                                                 }
 561
 562                                         }
 563
 564                                         if (row_needs_hl) {
 565                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 566                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 567                                         }
 568                                 } else {
 569                                         feedctr.className = "feedCtrNoUnread";
 570                                         feedr.className = feedr.className.replace("Unread", "");
 571                                 }
 572                         }
 573                 }
 574
 575                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 576
 577                 var feeds_stored = number_of_feeds;
 578
 579                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 580
 581                 if (feeds_stored != feeds_found) {
 582                         number_of_feeds = feeds_found;
 583
 584                         if (feeds_stored != 0 && feeds_found != 0) {
 585                                 debug("Subscribed feed number changed, refreshing feedlist");
 586                                 setTimeout('updateFeedList(false, false)', 50);
 587                         }
 588                 } else {
 589 /*                      var fl = $("feeds-frame").innerHTML;
 590                         if (fl) {
 591                                 cache_invalidate("FEEDLIST");
 592                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 593                         } */
 594                 }
 595
 596         } catch (e) {
 597                 exception_error("parse_counters", e);
 598         }
 599 }
 600
 601 function parse_counters_reply(transport, scheduled_call) {
 602
 603         if (!transport.responseXML) {
 604                 notify_error("Backend did not return valid XML", true);
 605                 return;
 606         }
 607
 608         var reply = transport.responseXML.firstChild;
 609
 610         if (!reply) {
 611                 notify_error("Backend did not return expected XML object", true);
 612                 updateTitle("");
 613                 return;
 614         }
 615
 616         if (!transport_error_check(transport)) return;
 617
 618         var counters = reply.getElementsByTagName("counters")[0];
 619
 620         parse_counters(counters, scheduled_call);
 621
 622         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 623
 624         parse_runtime_info(runtime_info);
 625
 626         if (feedsSortByUnread()) {
 627                 resort_feedlist();
 628         }
 629
 630         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 631
 632 }
 633
 634 function all_counters_callback2(transport, async_call) {
 635         try {
 636                 if (async_call) async_counters_work = true;
 637
 638                 if (offline_mode) return;
 639
 640                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 641                 parse_counters_reply(transport);
 642                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 643
 644         } catch (e) {
 645                 exception_error("all_counters_callback2", e, transport);
 646         }
 647 }
 648
 649 function get_feed_unread(id) {
 650         try {
 651                 return parseInt($("FEEDU-" + id).innerHTML);
 652         } catch (e) {
 653                 return -1;
 654         }
 655 }
 656
 657 function get_cat_unread(id) {
 658         try {
 659                 var ctr = $("FCATCTR-" + id).innerHTML;
 660                 ctr = ctr.replace("(", "");
 661                 ctr = ctr.replace(")", "");
 662                 return parseInt(ctr);
 663         } catch (e) {
 664                 return -1;
 665         }
 666 }
 667
 668 function get_feed_entry_unread(elem) {
 669
 670         var id = elem.id.replace("FEEDR-", "");
 671
 672         if (id <= 0) {
 673                 return -1;
 674         }
 675
 676         try {
 677                 return parseInt($("FEEDU-" + id).innerHTML);
 678         } catch (e) {
 679                 return -1;
 680         }
 681 }
 682
 683 function get_feed_entry_name(elem) {
 684         var id = elem.id.replace("FEEDR-", "");
 685         return getFeedName(id);
 686 }
 687
 688
 689 function resort_category(node) {
 690
 691         try {
 692
 693                 debug("resort_category: " + node);
 694
 695                 var by_unread = feedsSortByUnread();
 696
 697                 var list = node.getElementsByTagName("LI");
 698
 699                 for (i = 0; i < list.length; i++) {
 700
 701                         for (j = i+1; j < list.length; j++) {
 702
 703                                 var tmp_val = get_feed_entry_unread(list[i]);
 704                                 var cur_val = get_feed_entry_unread(list[j]);
 705
 706                                 var tmp_name = get_feed_entry_name(list[i]);
 707                                 var cur_name = get_feed_entry_name(list[j]);
 708
 709                                 if ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name))) {
 710                                         tempnode_i = list[i].cloneNode(true);
 711                                         tempnode_j = list[j].cloneNode(true);
 712                                         node.replaceChild(tempnode_i, list[j]);
 713                                         node.replaceChild(tempnode_j, list[i]);
 714                                 }
 715                         }
 716                 }
 717
 718         } catch (e) {
 719                 exception_error("resort_category", e);
 720         }
 721
 722 }
 723
 724 function resort_feedlist() {
 725         debug("resort_feedlist");
 726
 727         if ($("FCATLIST--1")) {
 728
 729                 var lists = document.getElementsByTagName("UL");
 730
 731                 for (var i = 0; i < lists.length; i++) {
 732                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 733                                 resort_category(lists[i]);
 734                         }
 735                 }
 736
 737         } else {
 738                 resort_category($("feedList"));
 739         }
 740 }
 741
 742 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 743   * * @author Sundar Dorai-Raj
 744   * * Email: sdoraira@vt.edu
 745   * * This program is free software; you can redistribute it and/or
 746   * * modify it under the terms of the GNU General Public License
 747   * * as published by the Free Software Foundation; either version 2
 748   * * of the License, or (at your option) any later version,
 749   * * provided that any use properly credits the author.
 750   * * This program is distributed in the hope that it will be useful,
 751   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 752   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 753   * * GNU General Public License for more details at http://www.gnu.org * * */
 754
 755   var numbers=".0123456789";
 756   function isNumeric(x) {
 757     // is x a String or a character?
 758     if(x.length>1) {
 759       // remove negative sign
 760       x=Math.abs(x)+"";
 761       for(j=0;j<x.length;j++) {
 762         // call isNumeric recursively for each character
 763         number=isNumeric(x.substring(j,j+1));
 764         if(!number) return number;
 765       }
 766       return number;
 767     }
 768     else {
 769       // if x is number return true
 770       if(numbers.indexOf(x)>=0) return true;
 771       return false;
 772     }
 773   }
 774
 775
 776 function hideOrShowFeeds(hide) {
 777
 778         try {
 779
 780         debug("hideOrShowFeeds: " + hide);
 781
 782         if ($("FCATLIST--1")) {
 783
 784                 var lists = document.getElementsByTagName("UL");
 785
 786                 for (var i = 0; i < lists.length; i++) {
 787                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 788
 789                                 var id = lists[i].id.replace("FCATLIST-", "");
 790                                 hideOrShowFeedsCategory(id, hide);
 791                         }
 792                 }
 793
 794         } else {
 795                 hideOrShowFeedsCategory(null, hide);
 796         }
 797
 798         } catch (e) {
 799                 exception_error("hideOrShowFeeds", e);
 800         }
 801 }
 802
 803 function hideOrShowFeedsCategory(id, hide) {
 804
 805         try {
 806
 807                 var node = null;
 808                 var cat_node = null;
 809
 810                 if (id) {
 811                         node = $("FCATLIST-" + id);
 812                         cat_node = $("FCAT-" + id);
 813                 } else {
 814                         node = $("feedList"); // no categories
 815                 }
 816
 817         //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 818
 819                 var cat_unread = 0;
 820
 821                 if (!node) {
 822                         debug("hideOrShowFeeds: passed node is null, aborting");
 823                         return;
 824                 }
 825
 826         //      debug("cat: " + node.id);
 827
 828                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 829                         for (i = 0; i < node.childNodes.length; i++) {
 830                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 831
 832                                 if (node.childNodes[i].style != undefined) {
 833
 834                                         var has_unread = (node.childNodes[i].className != "feed" &&
 835                                                 node.childNodes[i].className != "label" &&
 836                                                 !(!getInitParam("hide_read_shows_special") &&
 837                                                         node.childNodes[i].className == "virt") &&
 838                                                 node.childNodes[i].className != "error" &&
 839                                                 node.childNodes[i].className != "tag");
 840
 841         //                              debug(node.childNodes[i].id + " --> " + has_unread);
 842
 843                                         if (hide && !has_unread) {
 844                                                 //node.childNodes[i].style.display = "none";
 845                                                 var id = node.childNodes[i].id;
 846                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 847                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 848                                         }
 849
 850                                         if (!hide) {
 851                                                 node.childNodes[i].style.display = "list-item";
 852                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 853                                         }
 854
 855                                         if (has_unread) {
 856                                                 node.childNodes[i].style.display = "list-item";
 857                                                 cat_unread++;
 858                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 859                                                 //Effect.Highlight(node.childNodes[i]);
 860                                         }
 861                                 }
 862                         }
 863                 }
 864
 865         //      debug("end cat: " + node.id + " unread " + cat_unread);
 866
 867                 if (cat_node) {
 868
 869                         if (cat_unread == 0) {
 870                                 if (cat_node.style == undefined) {
 871                                         debug("ERROR: supplied cat_node " + cat_node +
 872                                                 " has no styles. WTF?");
 873                                         return;
 874                                 }
 875                                 if (hide) {
 876                                         //cat_node.style.display = "none";
 877                                         Effect.Fade(cat_node, {duration : 0.3,
 878                                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 879                                 } else {
 880                                         cat_node.style.display = "list-item";
 881                                 }
 882                         } else {
 883                                 try {
 884                                         cat_node.style.display = "list-item";
 885                                 } catch (e) {
 886                                         debug(e);
 887                                 }
 888                         }
 889                 }
 890
 891 //      debug("unread for category: " + cat_unread);
 892
 893         } catch (e) {
 894                 exception_error("hideOrShowFeedsCategory", e);
 895         }
 896 }
 897
 898 function selectTableRow(r, do_select) {
 899         r.className = r.className.replace("Selected", "");
 900
 901         if (do_select) {
 902                 r.className = r.className + "Selected";
 903         }
 904 }
 905
 906 function selectTableRowById(elem_id, check_id, do_select) {
 907
 908         try {
 909
 910                 var row = $(elem_id);
 911
 912                 if (row) {
 913                         selectTableRow(row, do_select);
 914                 }
 915
 916                 var check = $(check_id);
 917
 918                 if (check) {
 919                         check.checked = do_select;
 920                 }
 921         } catch (e) {
 922                 exception_error("selectTableRowById", e);
 923         }
 924 }
 925
 926 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 927         classcheck, reset_others) {
 928
 929         var content = $(content_id);
 930
 931         if (!content) {
 932                 alert("[selectTableRows] Element " + content_id + " not found.");
 933                 return;
 934         }
 935
 936         for (i = 0; i < content.rows.length; i++) {
 937                 if (Element.visible(content.rows[i])) {
 938                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 939
 940                                 if (content.rows[i].id.match(prefix)) {
 941                                         selectTableRow(content.rows[i], do_select);
 942
 943                                         var row_id = content.rows[i].id.replace(prefix, "");
 944                                         var check = $(check_prefix + row_id);
 945
 946                                         if (check) {
 947                                                 check.checked = do_select;
 948                                         }
 949                                 } else if (reset_others) {
 950                                         selectTableRow(content.rows[i], false);
 951
 952                                         var row_id = content.rows[i].id.replace(prefix, "");
 953                                         var check = $(check_prefix + row_id);
 954
 955                                         if (check) {
 956                                                 check.checked = false;
 957                                         }
 958
 959                                 }
 960                         } else if (reset_others) {
 961                                 selectTableRow(content.rows[i], false);
 962
 963                                 var row_id = content.rows[i].id.replace(prefix, "");
 964                                 var check = $(check_prefix + row_id);
 965
 966                                 if (check) {
 967                                         check.checked = false;
 968                                 }
 969
 970                         }
 971                 }
 972         }
 973 }
 974
 975 function getSelectedTableRowIds(content_id, prefix) {
 976
 977         var content = $(content_id);
 978
 979         if (!content) {
 980                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 981                 return;
 982         }
 983
 984         var sel_rows = new Array();
 985
 986         for (i = 0; i < content.rows.length; i++) {
 987                 if (content.rows[i].id.match(prefix) &&
 988                                 content.rows[i].className.match("Selected")) {
 989
 990                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 991                         sel_rows.push(row_id);
 992                 }
 993         }
 994
 995         return sel_rows;
 996
 997 }
 998
 999 function toggleSelectRowById(sender, id) {
1000         var row = $(id);
1001
1002         if (sender.checked) {
1003                 if (!row.className.match("Selected")) {
1004                         row.className = row.className + "Selected";
1005                 }
1006         } else {
1007                 if (row.className.match("Selected")) {
1008                         row.className = row.className.replace("Selected", "");
1009                 }
1010         }
1011 }
1012
1013 function toggleSelectListRow(sender) {
1014         var parent_row = sender.parentNode;
1015
1016         if (sender.checked) {
1017                 if (!parent_row.className.match("Selected")) {
1018                         parent_row.className = parent_row.className + "Selected";
1019                 }
1020         } else {
1021                 if (parent_row.className.match("Selected")) {
1022                         parent_row.className = parent_row.className.replace("Selected", "");
1023                 }
1024         }
1025 }
1026
1027 function tSR(sender) {
1028         return toggleSelectRow(sender);
1029 }
1030
1031 function toggleSelectRow(sender) {
1032         var parent_row = sender.parentNode.parentNode;
1033
1034         if (sender.checked) {
1035                 if (!parent_row.className.match("Selected")) {
1036                         parent_row.className = parent_row.className + "Selected";
1037                 }
1038         } else {
1039                 if (parent_row.className.match("Selected")) {
1040                         parent_row.className = parent_row.className.replace("Selected", "");
1041                 }
1042         }
1043 }
1044
1045 function getNextUnreadCat(id) {
1046         try {
1047                 var rows = $("feedList").getElementsByTagName("LI");
1048                 var feeds = new Array();
1049
1050                 var unread_only = true;
1051                 var is_cat = true;
1052
1053                 for (var i = 0; i < rows.length; i++) {
1054                         if (rows[i].id.match("FCAT-")) {
1055                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1056
1057                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1058
1059                                         if (cat_id >= 0) {
1060                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1061                                                         feeds.push(cat_id);
1062                                                 }
1063                                         }
1064                                 }
1065                         }
1066                 }
1067
1068                 var idx = feeds.indexOf(id);
1069                 if (idx != -1 && idx < feeds.length) {
1070                         return feeds[idx+1];
1071                 } else {
1072                         return feeds.shift();
1073                 }
1074
1075         } catch (e) {
1076                 exception_error("getNextUnreadCat", e);
1077         }
1078 }
1079
1080 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1081         try {
1082
1083 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1084
1085                 var rows = $("feedList").getElementsByTagName("LI");
1086                 var feeds = new Array();
1087
1088                 for (var i = 0; i < rows.length; i++) {
1089                         if (rows[i].id.match("FEEDR-")) {
1090
1091                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1092
1093                                         if (!unread_only ||
1094                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1095                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1096                                         }
1097                                 }
1098                         }
1099
1100                         if (rows[i].id.match("FCAT-")) {
1101                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1102
1103                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1104
1105                                         if (cat_id >= 0) {
1106                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1107                                                         feeds.push("CAT:"+cat_id);
1108                                                 }
1109                                         }
1110                                 }
1111                         }
1112                 }
1113
1114 //              alert(feeds.toString());
1115
1116                 if (!id) {
1117                         if (direction == "next") {
1118                                 return feeds.shift();
1119                         } else {
1120                                 return feeds.pop();
1121                         }
1122                 } else {
1123                         if (direction == "next") {
1124                                 if (is_cat) id = "CAT:" + id;
1125                                 var idx = feeds.indexOf(id);
1126                                 if (idx != -1 && idx < feeds.length) {
1127                                         return feeds[idx+1];
1128                                 } else {
1129                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1130                                 }
1131                         } else {
1132                                 if (is_cat) id = "CAT:" + id;
1133                                 var idx = feeds.indexOf(id);
1134                                 if (idx > 0) {
1135                                         return feeds[idx-1];
1136                                 } else {
1137                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1138                                 }
1139                         }
1140
1141                 }
1142
1143         } catch (e) {
1144                 exception_error("getRelativeFeedId2", e);
1145         }
1146 }
1147
1148
1149 function getRelativeFeedId(list, id, direction, unread_only) {
1150         var rows = list.getElementsByTagName("LI");
1151         var feeds = new Array();
1152
1153         for (var i = 0; i < rows.length; i++) {
1154                 if (rows[i].id.match("FEEDR-")) {
1155
1156                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1157
1158                                 if (!unread_only ||
1159                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1160                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1161                                 }
1162                         }
1163                 }
1164         }
1165
1166         if (!id) {
1167                 if (direction == "next") {
1168                         return feeds.shift();
1169                 } else {
1170                         return feeds.pop();
1171                 }
1172         } else {
1173                 if (direction == "next") {
1174                         var idx = feeds.indexOf(id);
1175                         if (idx != -1 && idx < feeds.length) {
1176                                 return feeds[idx+1];
1177                         } else {
1178                                 return getRelativeFeedId(list, false, direction, unread_only);
1179                         }
1180                 } else {
1181                         var idx = feeds.indexOf(id);
1182                         if (idx > 0) {
1183                                 return feeds[idx-1];
1184                         } else {
1185                                 return getRelativeFeedId(list, false, direction, unread_only);
1186                         }
1187                 }
1188
1189         }
1190 }
1191
1192 function showBlockElement(id, h_id) {
1193         var elem = $(id);
1194
1195         if (elem) {
1196                 elem.style.display = "block";
1197
1198                 if (h_id) {
1199                         elem = $(h_id);
1200                         if (elem) {
1201                                 elem.style.display = "none";
1202                         }
1203                 }
1204         } else {
1205                 alert("[showBlockElement] can't find element with id " + id);
1206         }
1207 }
1208
1209 function appearBlockElement_afh(effect) {
1210
1211 }
1212
1213 function checkboxToggleElement(elem, id) {
1214         if (elem.checked) {
1215                 Effect.Appear(id, {duration : 0.5});
1216         } else {
1217                 Effect.Fade(id, {duration : 0.5});
1218         }
1219 }
1220
1221 function appearBlockElement(id, h_id) {
1222
1223         try {
1224                 if (h_id) {
1225                         Effect.Fade(h_id);
1226                 }
1227                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1228         } catch (e) {
1229                 exception_error("appearBlockElement", e);
1230         }
1231
1232 }
1233
1234 function hideParentElement(e) {
1235         e.parentNode.style.display = "none";
1236 }
1237
1238 function dropboxSelect(e, v) {
1239         for (i = 0; i < e.length; i++) {
1240                 if (e[i].value == v) {
1241                         e.selectedIndex = i;
1242                         break;
1243                 }
1244         }
1245 }
1246
1247 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1248 // bugfixed just a little bit :-)
1249 function getURLParam(strParamName){
1250   var strReturn = "";
1251   var strHref = window.location.href;
1252
1253   if (strHref.indexOf("#") == strHref.length-1) {
1254                 strHref = strHref.substring(0, strHref.length-1);
1255   }
1256
1257   if ( strHref.indexOf("?") > -1 ){
1258     var strQueryString = strHref.substr(strHref.indexOf("?"));
1259     var aQueryString = strQueryString.split("&");
1260     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1261       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1262         var aParam = aQueryString[iParam].split("=");
1263         strReturn = aParam[1];
1264         break;
1265       }
1266     }
1267   }
1268   return strReturn;
1269 }
1270
1271 function leading_zero(p) {
1272         var s = String(p);
1273         if (s.length == 1) s = "0" + s;
1274         return s;
1275 }
1276
1277 function closeErrorBox() {
1278
1279         if (Element.visible("errorBoxShadow")) {
1280                 Element.hide("dialog_overlay");
1281                 Element.hide("errorBoxShadow");
1282
1283                 enableHotkeys();
1284         }
1285
1286         return false;
1287 }
1288
1289 function closeInfoBox(cleanup) {
1290
1291         if (Element.visible("infoBoxShadow")) {
1292                 Element.hide("dialog_overlay");
1293                 Element.hide("infoBoxShadow");
1294
1295                 if (cleanup) $("infoBoxShadow").innerHTML = "&nbsp;";
1296
1297                 enableHotkeys();
1298         }
1299
1300         return false;
1301 }
1302
1303
1304 function displayDlg(id, param) {
1305
1306         notify_progress("Loading, please wait...", true);
1307
1308         disableHotkeys();
1309
1310         var query = "backend.php?op=dlg&id=" +
1311                 param_escape(id) + "&param=" + param_escape(param);
1312
1313         new Ajax.Request(query, {
1314                 onComplete: function (transport) {
1315                         infobox_callback2(transport);
1316                 } });
1317
1318         return false;
1319 }
1320
1321 function infobox_submit_callback2(transport) {
1322         closeInfoBox();
1323
1324         try {
1325                 // called from prefs, reload tab
1326                 if (typeof active_tab != 'undefined' && active_tab) {
1327                         selectTab(active_tab, false);
1328                 }
1329         } catch (e) { }
1330
1331         if (transport.responseText) {
1332                 notify_info(transport.responseText);
1333         }
1334 }
1335
1336 function infobox_callback2(transport) {
1337         try {
1338
1339                 debug("infobox_callback2");
1340
1341                 var box = $('infoBox');
1342
1343                 if (box) {
1344
1345                         if (!getInitParam("infobox_disable_overlay")) {
1346                                 Element.show("dialog_overlay");
1347                         }
1348
1349                         box.innerHTML=transport.responseText;
1350                         Element.show("infoBoxShadow");
1351                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
1352
1353
1354                 }
1355
1356                 /* FIXME this needs to be moved out somewhere */
1357
1358                 if ($("tags_choices")) {
1359                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1360                                 "backend.php?op=rpc&subop=completeTags",
1361                                 { tokens: ',', paramName: "search" });
1362                 }
1363
1364                 disableHotkeys();
1365
1366                 notify("");
1367         } catch (e) {
1368                 exception_error("infobox_callback2", e);
1369         }
1370 }
1371
1372 function createFilter() {
1373
1374         try {
1375
1376                 var form = document.forms['filter_add_form'];
1377                 var reg_exp = form.reg_exp.value;
1378
1379                 if (reg_exp == "") {
1380                         alert(__("Can't add filter: nothing to match on."));
1381                         return false;
1382                 }
1383
1384                 var query = Form.serialize("filter_add_form");
1385
1386                 // we can be called from some other tab in Prefs
1387                 if (typeof active_tab != 'undefined' && active_tab) {
1388                         active_tab = "filterConfig";
1389                 }
1390
1391                 new Ajax.Request("backend.php?" + query, {
1392                         onComplete: function (transport) {
1393                                 infobox_submit_callback2(transport);
1394                         } });
1395
1396                 return true;
1397
1398         } catch (e) {
1399                 exception_error("createFilter", e);
1400         }
1401 }
1402
1403 function toggleSubmitNotEmpty(e, submit_id) {
1404         try {
1405                 $(submit_id).disabled = (e.value == "")
1406         } catch (e) {
1407                 exception_error("toggleSubmitNotEmpty", e);
1408         }
1409 }
1410
1411 function isValidURL(s) {
1412         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1413 }
1414
1415 function subscribeToFeed() {
1416
1417         var form = document.forms['feed_add_form'];
1418         var feed_url = form.feed_url.value;
1419
1420         if (feed_url == "") {
1421                 alert(__("Can't subscribe: no feed URL given."));
1422                 return false;
1423         }
1424
1425         notify_progress(__("Subscribing to feed..."), true);
1426
1427         closeInfoBox();
1428
1429         var feeds_doc = document;
1430
1431 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1432
1433         var query = Form.serialize("feed_add_form");
1434
1435         debug("subscribe q: " + query);
1436
1437         new Ajax.Request("backend.php", {
1438                 parameters: query,
1439                 onComplete: function(transport) {
1440                         dlg_frefresh_callback(transport);
1441                 } });
1442
1443         return false;
1444 }
1445
1446 function filterCR(e, f)
1447 {
1448      var key;
1449
1450      if(window.event)
1451           key = window.event.keyCode;     //IE
1452      else
1453           key = e.which;     //firefox
1454
1455         if (key == 13) {
1456                 if (typeof f != 'undefined') {
1457                         f();
1458                         return false;
1459                 } else {
1460                         return false;
1461                 }
1462         } else {
1463                 return true;
1464         }
1465 }
1466
1467 var debug_last_class = "even";
1468
1469 function debug(msg) {
1470
1471         if (debug_last_class == "even") {
1472                 debug_last_class = "odd";
1473         } else {
1474                 debug_last_class = "even";
1475         }
1476
1477         var c = $('debug_output');
1478         if (c && Element.visible(c)) {
1479                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1480                         c.removeChild(c.lastChild);
1481                 }
1482
1483                 var d = new Date();
1484                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1485                         ":" + leading_zero(d.getSeconds());
1486                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1487                         msg + "</li>" + c.innerHTML;
1488         }
1489 }
1490
1491 function getInitParam(key) {
1492         return init_params[key];
1493 }
1494
1495 function storeInitParam(key, value) {
1496         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1497         init_params[key] = value;
1498 }
1499
1500 function fatalError(code, msg, ext_info) {
1501         try {
1502
1503                 if (!ext_info) ext_info = "N/A";
1504
1505                 if (code == 6) {
1506                         window.location.href = "tt-rss.php";
1507                 } else if (code == 5) {
1508                         window.location.href = "update.php";
1509                 } else {
1510
1511                         if (msg == "") msg = "Unknown error";
1512
1513                         var ebc = $("xebContent");
1514
1515                         if (ebc) {
1516
1517                                 Element.show("dialog_overlay");
1518                                 Element.show("errorBoxShadow");
1519                                 Element.hide("xebBtn");
1520
1521                                 if (ext_info) {
1522                                         if (ext_info.responseText) {
1523                                                 ext_info = ext_info.responseText;
1524                                         }
1525                                 }
1526
1527                                 ebc.innerHTML =
1528                                         "<div><b>Error message:</b></div>" +
1529                                         "<pre>" + msg + "</pre>" +
1530                                         "<div><b>Additional information:</b></div>" +
1531                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1532                         }
1533                 }
1534
1535         } catch (e) {
1536                 exception_error("fatalError", e);
1537         }
1538 }
1539
1540 function getFeedName(id, is_cat) {
1541         var e;
1542
1543         if (is_cat) {
1544                 e = $("FCATN-" + id);
1545         } else {
1546                 e = $("FEEDN-" + id);
1547         }
1548         if (e) {
1549                 return e.innerHTML.stripTags();
1550         } else {
1551                 return null;
1552         }
1553 }
1554
1555 function filterDlgCheckType(sender) {
1556
1557         try {
1558
1559                 var ftype = sender[sender.selectedIndex].value;
1560
1561                 var form = document.forms["filter_add_form"];
1562
1563                 if (!form) {
1564                         form = document.forms["filter_edit_form"];
1565                 }
1566
1567                 if (!form) {
1568                         debug("filterDlgCheckType: can't find form!");
1569                         return;
1570                 }
1571
1572                 // if selected filter type is 5 (Date) enable the modifier dropbox
1573                 if (ftype == 5) {
1574                         Element.show("filter_dlg_date_mod_box");
1575                         Element.show("filter_dlg_date_chk_box");
1576                 } else {
1577                         Element.hide("filter_dlg_date_mod_box");
1578                         Element.hide("filter_dlg_date_chk_box");
1579
1580                 }
1581
1582         } catch (e) {
1583                 exception_error("filterDlgCheckType", e);
1584         }
1585
1586 }
1587
1588 function filterDlgCheckAction(sender) {
1589
1590         try {
1591
1592                 var action = sender[sender.selectedIndex].value;
1593
1594                 var form = document.forms["filter_add_form"];
1595
1596                 if (!form) {
1597                         form = document.forms["filter_edit_form"];
1598                 }
1599
1600                 if (!form) {
1601                         debug("filterDlgCheckAction: can't find form!");
1602                         return;
1603                 }
1604
1605                 var action_param = $("filter_dlg_param_box");
1606
1607                 if (!action_param) {
1608                         debug("filterDlgCheckAction: can't find action param box!");
1609                         return;
1610                 }
1611
1612                 // if selected action supports parameters, enable params field
1613                 if (action == 4 || action == 6 || action == 7) {
1614                         Element.show(action_param);
1615                         if (action != 7) {
1616                                 Element.show(form.action_param);
1617                                 Element.hide(form.action_param_label);
1618                         } else {
1619                                 Element.show(form.action_param_label);
1620                                 Element.hide(form.action_param);
1621                         }
1622                 } else {
1623                         Element.hide(action_param);
1624                 }
1625
1626         } catch (e) {
1627                 exception_error("filterDlgCheckAction", e);
1628         }
1629
1630 }
1631
1632 function filterDlgCheckDate() {
1633         try {
1634                 var form = document.forms["filter_add_form"];
1635
1636                 if (!form) {
1637                         form = document.forms["filter_edit_form"];
1638                 }
1639
1640                 if (!form) {
1641                         debug("filterDlgCheckAction: can't find form!");
1642                         return;
1643                 }
1644
1645                 var reg_exp = form.reg_exp.value;
1646
1647                 var query = "backend.php?op=rpc&subop=checkDate&date=" + reg_exp;
1648
1649                 new Ajax.Request(query, {
1650                         onComplete: function(transport) {
1651
1652                                 var form = document.forms["filter_add_form"];
1653
1654                                 if (!form) {
1655                                         form = document.forms["filter_edit_form"];
1656                                 }
1657
1658                                 if (transport.responseXML) {
1659                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1660
1661                                         if (result && result.firstChild) {
1662                                                 if (result.firstChild.nodeValue == "1") {
1663
1664                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1665
1666                                                         return;
1667                                                 }
1668                                         }
1669                                 }
1670
1671                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1672
1673                         } });
1674
1675
1676         } catch (e) {
1677                 exception_error("filterDlgCheckDate", e);
1678         }
1679 }
1680
1681 function explainError(code) {
1682         return displayDlg("explainError", code);
1683 }
1684
1685 // this only searches loaded headlines list, not in CDM
1686 function getRelativePostIds(id, limit) {
1687
1688         if (!limit) limit = 3;
1689
1690         debug("getRelativePostIds: " + id + " limit=" + limit);
1691
1692         var ids = new Array();
1693         var container = $("headlinesList");
1694
1695         if (container) {
1696                 var rows = container.rows;
1697
1698                 for (var i = 0; i < rows.length; i++) {
1699                         var r_id = rows[i].id.replace("RROW-", "");
1700
1701                         if (r_id == id) {
1702                                 for (var k = 1; k <= limit; k++) {
1703                                         var nid = false;
1704
1705                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1706                                         if (nid) ids.push(nid);
1707
1708                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1709                                         if (nid) ids.push(nid);
1710                                 }
1711
1712                                 return ids;
1713                         }
1714                 }
1715         }
1716
1717         return false;
1718 }
1719
1720 function openArticleInNewWindow(id) {
1721         try {
1722                 debug("openArticleInNewWindow: " + id);
1723
1724                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1725                 var wname = "ttrss_article_" + id;
1726
1727                 debug(query + " " + wname);
1728
1729                 var w = window.open("", wname);
1730
1731                 if (!w) notify_error("Failed to open window for the article");
1732
1733                 new Ajax.Request(query, {
1734                         onComplete: function(transport) {
1735                                 open_article_callback(transport);
1736                         } });
1737
1738
1739         } catch (e) {
1740                 exception_error("openArticleInNewWindow", e);
1741         }
1742 }
1743
1744 /* http://textsnippets.com/posts/show/835 */
1745
1746 Position.GetWindowSize = function(w) {
1747         w = w ? w : window;
1748         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1749         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1750         return [width, height]
1751 }
1752
1753 /* http://textsnippets.com/posts/show/836 */
1754
1755 Position.Center = function(element, parent) {
1756         var w, h, pw, ph;
1757         var d = Element.getDimensions(element);
1758         w = d.width;
1759         h = d.height;
1760         Position.prepare();
1761         if (!parent) {
1762                 var ws = Position.GetWindowSize();
1763                 pw = ws[0];
1764                 ph = ws[1];
1765         } else {
1766                 pw = parent.offsetWidth;
1767                 ph = parent.offsetHeight;
1768         }
1769         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1770         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1771 }
1772
1773
1774 function labeltest_callback(transport) {
1775         try {
1776                 var container = $('label_test_result');
1777
1778                 container.innerHTML = transport.responseText;
1779                 if (!Element.visible(container)) {
1780                         Effect.SlideDown(container, { duration : 0.5 });
1781                 }
1782
1783                 notify("");
1784         } catch (e) {
1785                 exception_error("labeltest_callback", e);
1786         }
1787 }
1788
1789 function labelTest() {
1790
1791         try {
1792                 var container = $('label_test_result');
1793
1794                 var form = document.forms['label_edit_form'];
1795
1796                 var sql_exp = form.sql_exp.value;
1797                 var description = form.description.value;
1798
1799                 notify_progress("Loading, please wait...");
1800
1801                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1802                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1803
1804                 new Ajax.Request(query, {
1805                         onComplete: function (transport) {
1806                                 labeltest_callback(transport);
1807                         } });
1808
1809                 return false;
1810
1811         } catch (e) {
1812                 exception_error("labelTest", e);
1813         }
1814 }
1815
1816 function isCdmMode() {
1817         return !$("headlinesList");
1818 }
1819
1820 function getSelectedArticleIds2() {
1821         var rows = new Array();
1822         var cdm_mode = isCdmMode();
1823
1824         if (cdm_mode) {
1825                 rows = cdmGetSelectedArticles();
1826         } else {
1827                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1828         }
1829
1830         var ids = new Array();
1831
1832         for (var i = 0; i < rows.length; i++) {
1833                 var chk = $("RCHK-" + rows[i]);
1834                 if (chk && chk.checked) {
1835                         ids.push(rows[i]);
1836                 }
1837         }
1838
1839         return ids;
1840 }
1841
1842 function displayHelpInfobox(topic_id) {
1843
1844         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1845
1846         var w = window.open(url, "ttrss_help",
1847                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1848
1849 }
1850
1851 function focus_element(id) {
1852         try {
1853                 var e = $(id);
1854                 if (e) e.focus();
1855         } catch (e) {
1856                 exception_error("focus_element", e);
1857         }
1858         return false;
1859 }
1860
1861 function loading_set_progress(p) {
1862         try {
1863                 if (p < last_progress_point || !Element.visible("overlay")) return;
1864
1865                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1866
1867                 var o = $("l_progress_i");
1868
1869 //              o.style.width = (p * 2) + "px";
1870
1871                 new Effect.Scale(o, p, {
1872                         scaleY : false,
1873                         scaleFrom : last_progress_point,
1874                         scaleMode: { originalWidth : 200 },
1875                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1876
1877                 last_progress_point = p;
1878
1879         } catch (e) {
1880                 exception_error("loading_set_progress", e);
1881         }
1882 }
1883
1884 function remove_splash() {
1885         if (Element.visible("overlay")) {
1886                 debug("about to remove splash, OMG!");
1887                 Element.hide("overlay");
1888                 debug("removed splash!");
1889         }
1890 }
1891
1892 function addLabelExample() {
1893         try {
1894                 var form = document.forms["label_edit_form"];
1895
1896                 var text = form.sql_exp;
1897                 var op = form.label_fields[form.label_fields.selectedIndex];
1898                 var p = form.label_fields_param;
1899
1900                 if (op) {
1901                         op = op.value;
1902
1903                         var tmp = "";
1904
1905                         if (text.value != "") {
1906                                 if (text.value.substring(text.value.length-3, 3).toUpperCase() != "AND") {
1907                                         tmp = " AND ";
1908                                 } else {
1909                                         tmp = " ";
1910                                 }
1911                         }
1912
1913                         if (op == "unread") {
1914                                 tmp = tmp + "unread = true";
1915                         }
1916
1917                         if (op == "updated") {
1918                                 tmp = tmp + "last_read is null and unread = false";
1919                         }
1920
1921                         if (op == "kw_title") {
1922                                 if (p.value == "") {
1923                                         alert("This action requires a parameter.");
1924                                         return false;
1925                                 }
1926                                 tmp = tmp + "ttrss_entries.title like '%"+p.value+"%'";
1927                         }
1928
1929                         if (op == "kw_content") {
1930                                 if (p.value == "") {
1931                                         alert("This action requires a parameter.");
1932                                         return false;
1933                                 }
1934
1935                                 tmp = tmp + "ttrss_entries.content like '%"+p.value+"%'";
1936                         }
1937
1938                         if (op == "scoreE") {
1939                                 if (isNaN(parseInt(p.value))) {
1940                                         alert("This action expects numeric parameter.");
1941                                         return false;
1942                                 }
1943                                 tmp = tmp + "score = " + p.value;
1944                         }
1945
1946                         if (op == "scoreG") {
1947                                 if (isNaN(parseInt(p.value))) {
1948                                         alert("This action expects numeric parameter.");
1949                                         return false;
1950                                 }
1951                                 tmp = tmp + "score > " + p.value;
1952                         }
1953
1954                         if (op == "scoreL") {
1955                                 if (isNaN(parseInt(p.value))) {
1956                                         alert("This action expects numeric parameter.");
1957                                         return false;
1958                                 }
1959                                 tmp = tmp + "score < " + p.value;
1960                         }
1961
1962                         if (op == "newerD") {
1963                                 if (isNaN(parseInt(p.value))) {
1964                                         alert("This action expects numeric parameter.");
1965                                         return false;
1966                                 }
1967                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" days'";
1968                         }
1969
1970                         if (op == "newerH") {
1971                                 if (isNaN(parseInt(p.value))) {
1972                                         alert("This action expects numeric parameter.");
1973                                         return false;
1974                                 }
1975
1976                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" hours'";
1977                         }
1978
1979                         text.value = text.value + tmp;
1980
1981                         p.value = "";
1982
1983                 }
1984
1985         } catch (e) {
1986                 exception_error("addLabelExample", e);
1987         }
1988
1989         return false;
1990 }
1991
1992 function labelFieldsCheck(elem) {
1993         try {
1994                 var op = elem[elem.selectedIndex].value;
1995
1996                 var p = document.forms["label_edit_form"].label_fields_param;
1997
1998                 if (op == "kw_title" || op == "kw_content" || op == "scoreL" ||
1999                                 op == "scoreG" ||       op == "scoreE" || op == "newerD" ||
2000                                 op == "newerH" ) {
2001                         Element.show(p);
2002                 } else {
2003                         Element.hide(p);
2004                 }
2005
2006         } catch (e) {
2007                 exception_error("labelFieldsCheck", e);
2008
2009         }
2010 }
2011
2012 function getSelectedFeedsFromBrowser() {
2013
2014         var list = $("browseFeedList");
2015         if (!list) list = $("browseBigFeedList");
2016
2017         var selected = new Array();
2018
2019         for (i = 0; i < list.childNodes.length; i++) {
2020                 var child = list.childNodes[i];
2021                 if (child.id && child.id.match("FBROW-")) {
2022                         var id = child.id.replace("FBROW-", "");
2023
2024                         var cb = $("FBCHK-" + id);
2025
2026                         if (cb.checked) {
2027                                 selected.push(id);
2028                         }
2029                 }
2030         }
2031
2032         return selected;
2033 }
2034
2035 function updateFeedBrowser() {
2036         try {
2037
2038                 var query = "backend.php?op=rpc&subop=feedBrowser";
2039
2040                 var search = $("feed_browser_search");
2041                 var limit = $("feed_browser_limit");
2042
2043                 if (limit) {
2044                         query = query + "&limit=" + limit[limit.selectedIndex].value;
2045                 }
2046
2047                 if (search) {
2048                         query = query + "&search=" + param_escape(search.value);
2049                 }
2050
2051                 notify_progress("Loading, please wait...", true);
2052
2053                 new Ajax.Request(query, {
2054                         onComplete: function(transport) {
2055                                 notify('');
2056
2057                                 var c = $("browseFeedList");
2058                                 var r = transport.responseXML.getElementsByTagName("content")[0];
2059                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
2060                                 var sb = $("feed_browser_subscribe");
2061
2062                                 if (c && r) {
2063                                         c.innerHTML = r.firstChild.nodeValue;
2064                                 }
2065
2066                                 if (nr && sb) {
2067                                         if (nr.getAttribute("value") > 0) {
2068                                                 sb.disabled = false;
2069                                         } else {
2070                                                 sb.disabled = true;
2071                                         }
2072                                 }
2073
2074                         } });
2075
2076
2077         } catch (e) {
2078                 exception_error("updateFeedBrowser", e);
2079         }
2080 }
2081
2082 function browseFeeds(limit) {
2083
2084         try {
2085
2086                 var query = "backend.php?op=pref-feeds&subop=browse";
2087
2088                 notify_progress("Loading, please wait...", true);
2089
2090                 new Ajax.Request(query, {
2091                         onComplete: function(transport) {
2092                                 infobox_callback2(transport);
2093                         } });
2094
2095                 return false;
2096         } catch (e) {
2097                 exception_error("browseFeeds", e);
2098         }
2099 }
2100
2101 function transport_error_check(transport) {
2102         try {
2103                 if (transport.responseXML) {
2104                         var error = transport.responseXML.getElementsByTagName("error")[0];
2105
2106                         if (error) {
2107                                 var code = error.getAttribute("error-code");
2108                                 var msg = error.getAttribute("error-msg");
2109                                 if (code != 0) {
2110                                         fatalError(code, msg);
2111                                         return false;
2112                                 }
2113                         }
2114                 }
2115         } catch (e) {
2116                 exception_error("check_for_error_xml", e);
2117         }
2118         return true;
2119 }
2120
2121 function strip_tags(s) {
2122         return s.replace(/<\/?[^>]+(>|$)/g, "");
2123 }
2124
2125 function truncate_string(s, length) {
2126         if (!length) length = 30;
2127         var tmp = s.substring(0, length);
2128         if (s.length > length) tmp += "&hellip;";
2129         return tmp;
2130 }
2131
2132 /*
2133 function switchToFlash(e) {
2134         try {
2135                 var targ = e;
2136                 if (!e) var e = window.event;
2137                 if (e.target) targ = e.target;
2138                 else if (e.srcElement) targ = e.srcElement;
2139                 if (targ.nodeType == 3) // defeat Safari bug
2140                         targ = targ.parentNode;
2141
2142                 //targ is the link that was clicked
2143                 var audioTag=targ;
2144                 do {
2145                         audioTag=audioTag.previousSibling;
2146                 } while(audioTag && audioTag.nodeType != 1)
2147
2148                 var flashPlayer = audioTag.getElementsByTagName('span')[0];
2149                 targ.parentNode.insertBefore(flashPlayer,targ);
2150                 targ.parentNode.removeChild(targ);
2151                 audioTag.parentNode.removeChild(audioTag);
2152
2153                 return false;
2154         } catch (e) {
2155                 exception_error("switchToFlash", e);
2156         }
2157 }
2158
2159 function html5AudioOrFlash(type) {
2160         var audioTag = document.createElement('audio');
2161         if(! audioTag.canPlayType || audioTag.canPlayType(type) == "no" ||
2162                         audioTag.canPlayType(type) == ""){
2163                 if($('switchToFlashLink')){
2164                         switchToFlash($('switchToFlashLink'));
2165                 }
2166         }
2167 } */