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