functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var last_progress_point = 0;
   4 var sanity_check_done = 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 /* create console.log if it doesn't exist */
  15
  16 if (!window.console) console = {};
  17 console.log = console.log || function(msg) { };
  18 console.warn = console.warn || function(msg) { };
  19 console.error = console.error || function(msg) { };
  20
  21 function exception_error(location, e, ext_info) {
  22         var msg = format_exception_error(location, e);
  23
  24         if (!ext_info) ext_info = false;
  25
  26         disableHotkeys();
  27
  28         try {
  29
  30                 var ebc = $("xebContent");
  31
  32                 if (ebc) {
  33
  34                         Element.show("dialog_overlay");
  35                         Element.show("errorBoxShadow");
  36
  37                         if (ext_info) {
  38                                 if (ext_info.responseText) {
  39                                         ext_info = ext_info.responseText;
  40                                 }
  41                         }
  42
  43                         ebc.innerHTML =
  44                                 "<div><b>Error message:</b></div>" +
  45                                 "<pre>" + msg + "</pre>";
  46
  47                         if (ext_info) {
  48                                 ebc.innerHTML += "<div><b>Additional information:</b></div>" +
  49                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  50                         }
  51
  52                         ebc.innerHTML += "<div><b>Stack trace:</b></div>" +
  53                                 "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  54
  55                 } else {
  56                         alert(msg);
  57                 }
  58
  59         } catch (e) {
  60                 alert(msg);
  61
  62         }
  63
  64 }
  65
  66 function format_exception_error(location, e) {
  67         var msg;
  68
  69         if (e.fileName) {
  70                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  71
  72                 msg = "Exception: " + e.name + ", " + e.message +
  73                         "\nFunction: " + location + "()" +
  74                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  75
  76         } else if (e.description) {
  77                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  78         } else {
  79                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  80         }
  81
  82         console.error("EXCEPTION: " + msg);
  83
  84         return msg;
  85 }
  86
  87
  88 function disableHotkeys() {
  89         hotkeys_enabled = false;
  90 }
  91
  92 function enableHotkeys() {
  93         hotkeys_enabled = true;
  94 }
  95
  96 function param_escape(arg) {
  97         if (typeof encodeURIComponent != 'undefined')
  98                 return encodeURIComponent(arg);
  99         else
 100                 return escape(arg);
 101 }
 102
 103 function param_unescape(arg) {
 104         if (typeof decodeURIComponent != 'undefined')
 105                 return decodeURIComponent(arg);
 106         else
 107                 return unescape(arg);
 108 }
 109
 110 function delay(gap) {
 111         var then,now;
 112         then=new Date().getTime();
 113         now=then;
 114         while((now-then)<gap) {
 115                 now=new Date().getTime();
 116         }
 117 }
 118
 119 var notify_hide_timerid = false;
 120
 121 function hide_notify() {
 122         var n = $("notify");
 123         if (n) {
 124                 n.style.display = "none";
 125         }
 126 }
 127
 128 function notify_silent_next() {
 129         notify_silent = true;
 130 }
 131
 132 function notify_real(msg, no_hide, n_type) {
 133
 134         if (notify_silent) {
 135                 notify_silent = false;
 136                 return;
 137         }
 138
 139         var n = $("notify");
 140         var nb = $("notify_body");
 141
 142         if (!n || !nb) return;
 143
 144         if (notify_hide_timerid) {
 145                 window.clearTimeout(notify_hide_timerid);
 146         }
 147
 148         if (msg == "") {
 149                 if (n.style.display == "block") {
 150                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 151                 }
 152                 return;
 153         } else {
 154                 n.style.display = "block";
 155         }
 156
 157         /* types:
 158
 159                 1 - generic
 160                 2 - progress
 161                 3 - error
 162                 4 - info
 163
 164         */
 165
 166         if (typeof __ != 'undefined') {
 167                 msg = __(msg);
 168         }
 169
 170         if (n_type == 1) {
 171                 n.className = "notify";
 172         } else if (n_type == 2) {
 173                 n.className = "notifyProgress";
 174                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 175         } else if (n_type == 3) {
 176                 n.className = "notifyError";
 177                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 178         } else if (n_type == 4) {
 179                 n.className = "notifyInfo";
 180                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 181         }
 182
 183 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 184
 185         nb.innerHTML = msg;
 186
 187         if (!no_hide) {
 188                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 189         }
 190 }
 191
 192 function notify(msg, no_hide) {
 193         notify_real(msg, no_hide, 1);
 194 }
 195
 196 function notify_progress(msg, no_hide) {
 197         notify_real(msg, no_hide, 2);
 198 }
 199
 200 function notify_error(msg, no_hide) {
 201         notify_real(msg, no_hide, 3);
 202
 203 }
 204
 205 function notify_info(msg, no_hide) {
 206         notify_real(msg, no_hide, 4);
 207 }
 208
 209 function printLockingError() {
 210         notify_info("Please wait until operation finishes.");
 211 }
 212
 213 function cleanSelected(element) {
 214         var content = $(element);
 215
 216         for (i = 0; i < content.rows.length; i++) {
 217                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 218         }
 219 }
 220
 221 function getVisibleUnreadHeadlines() {
 222         var content = $("headlinesList");
 223
 224         var rows = new Array();
 225
 226         if (!content) return rows;
 227
 228         for (i = 0; i < content.rows.length; i++) {
 229                 var row_id = content.rows[i].id.replace("RROW-", "");
 230                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 231                                 rows.push(row_id);
 232                 }
 233         }
 234         return rows;
 235 }
 236
 237 function getVisibleHeadlineIds() {
 238
 239         var content = $("headlinesList");
 240
 241         var rows = new Array();
 242
 243         if (!content) return rows;
 244
 245         for (i = 0; i < content.rows.length; i++) {
 246                 var row_id = content.rows[i].id.replace("RROW-", "");
 247                 if (row_id.length > 0) {
 248                                 rows.push(row_id);
 249                 }
 250         }
 251         return rows;
 252 }
 253
 254 function getFirstVisibleHeadlineId() {
 255         if (isCdmMode()) {
 256                 var rows = cdmGetVisibleArticles();
 257                 return rows[0];
 258         } else {
 259                 var rows = getVisibleHeadlineIds();
 260                 return rows[0];
 261         }
 262 }
 263
 264 function getLastVisibleHeadlineId() {
 265         if (isCdmMode()) {
 266                 var rows = cdmGetVisibleArticles();
 267                 return rows[rows.length-1];
 268         } else {
 269                 var rows = getVisibleHeadlineIds();
 270                 return rows[rows.length-1];
 271         }
 272 }
 273
 274 function markHeadline(id) {
 275         var row = $("RROW-" + id);
 276         if (row) {
 277                 var is_active = false;
 278
 279                 if (row.className.match("Active")) {
 280                         is_active = true;
 281                 }
 282                 row.className = row.className.replace("Selected", "");
 283                 row.className = row.className.replace("Active", "");
 284                 row.className = row.className.replace("Insensitive", "");
 285
 286                 if (is_active) {
 287                         row.className = row.className = "Active";
 288                 }
 289
 290                 var check = $("RCHK-" + id);
 291
 292                 if (check) {
 293                         check.checked = true;
 294                 }
 295
 296                 row.className = row.className + "Selected";
 297
 298         }
 299 }
 300
 301 function getFeedIds() {
 302         var content = $("feedsList");
 303
 304         var rows = new Array();
 305
 306         for (i = 0; i < content.rows.length; i++) {
 307                 var id = content.rows[i].id.replace("FEEDR-", "");
 308                 if (id.length > 0) {
 309                         rows.push(id);
 310                 }
 311         }
 312
 313         return rows;
 314 }
 315
 316 function setCookie(name, value, lifetime, path, domain, secure) {
 317
 318         var d = false;
 319
 320         if (lifetime) {
 321                 d = new Date();
 322                 d.setTime(d.getTime() + (lifetime * 1000));
 323         }
 324
 325         console.log("setCookie: " + name + " => " + value + ": " + d);
 326
 327         int_setCookie(name, value, d, path, domain, secure);
 328
 329 }
 330
 331 function int_setCookie(name, value, expires, path, domain, secure) {
 332         document.cookie= name + "=" + escape(value) +
 333                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 334                 ((path) ? "; path=" + path : "") +
 335                 ((domain) ? "; domain=" + domain : "") +
 336                 ((secure) ? "; secure" : "");
 337 }
 338
 339 function delCookie(name, path, domain) {
 340         if (getCookie(name)) {
 341                 document.cookie = name + "=" +
 342                 ((path) ? ";path=" + path : "") +
 343                 ((domain) ? ";domain=" + domain : "" ) +
 344                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 345         }
 346 }
 347
 348
 349 function getCookie(name) {
 350
 351         var dc = document.cookie;
 352         var prefix = name + "=";
 353         var begin = dc.indexOf("; " + prefix);
 354         if (begin == -1) {
 355             begin = dc.indexOf(prefix);
 356             if (begin != 0) return null;
 357         }
 358         else {
 359             begin += 2;
 360         }
 361         var end = document.cookie.indexOf(";", begin);
 362         if (end == -1) {
 363             end = dc.length;
 364         }
 365         return unescape(dc.substring(begin + prefix.length, end));
 366 }
 367
 368 function gotoPreferences() {
 369         document.location.href = "prefs.php";
 370 }
 371
 372 function gotoMain() {
 373         document.location.href = "tt-rss.php";
 374 }
 375
 376 function gotoExportOpml() {
 377         document.location.href = "opml.php?op=Export";
 378 }
 379
 380 function parse_counters(reply, scheduled_call) {
 381         try {
 382
 383                 var feeds_found = 0;
 384
 385                 var elems = JSON.parse(reply.firstChild.nodeValue);
 386
 387                 for (var l = 0; l < elems.length; l++) {
 388
 389                         var id = elems[l].id
 390                         var kind = elems[l].kind;
 391                         var ctr = parseInt(elems[l].counter)
 392                         var error = elems[l].error;
 393                         var has_img = elems[l].has_img;
 394                         var updated = elems[l].updated;
 395                         var title = elems[l].title;
 396                         var xmsg = elems[l].xmsg;
 397
 398                         if (id == "global-unread") {
 399
 400                                 if (ctr > global_unread) {
 401                                         offlineDownloadStart(1);
 402                                 }
 403
 404                                 global_unread = ctr;
 405                                 updateTitle();
 406                                 continue;
 407                         }
 408
 409                         if (id == "subscribed-feeds") {
 410                                 feeds_found = ctr;
 411                                 continue;
 412                         }
 413
 414                         if (kind && kind == "cat") {
 415                                 var catctr = $("FCATCTR-" + id);
 416                                 if (catctr) {
 417                                         catctr.innerHTML = "(" + ctr + ")";
 418                                         if (ctr > 0) {
 419                                                 catctr.className = "catCtrHasUnread";
 420                                         } else {
 421                                                 catctr.className = "catCtrNoUnread";
 422                                         }
 423                                 }
 424                                 continue;
 425                         }
 426
 427                         var feedctr = $("FEEDCTR-" + id);
 428                         var feedu = $("FEEDU-" + id);
 429                         var feedr = $("FEEDR-" + id);
 430                         var feed_img = $("FIMG-" + id);
 431                         var feedlink = $("FEEDL-" + id);
 432                         var feedupd = $("FLUPD-" + id);
 433
 434                         if (updated && feedlink) {
 435                                 if (error) {
 436                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 437                                 } else {
 438                                         feedlink.title = "Updated: " + updated;
 439                                 }
 440                         }
 441
 442                         if (feedupd) {
 443                                 if (!updated) updated = "";
 444
 445                                 if (error) {
 446                                         if (xmsg) {
 447                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 448                                         } else {
 449                                                 feedupd.innerHTML = updated + " (Error)";
 450                                         }
 451                                 } else {
 452                                         if (xmsg) {
 453                                                 feedupd.innerHTML = updated + " " + xmsg;
 454                                         } else {
 455                                                 feedupd.innerHTML = updated;
 456                                         }
 457                                 }
 458                         }
 459
 460                         if (has_img && feed_img) {
 461                                 if (!feed_img.src.match(id + ".ico")) {
 462                                         feed_img.src = getInitParam("icons_url") + "/" + id + ".ico";
 463                                 }
 464                         }
 465
 466                         if (feedlink && title) {
 467                                 feedlink.innerHTML = title;
 468                         }
 469
 470                         if (feedctr && feedu && feedr) {
 471
 472                                 if (parseInt(ctr) > 0 &&
 473                                                 parseInt(feedu.innerHTML) < parseInt(ctr) &&
 474                                                 id == getActiveFeedId() && scheduled_call) {
 475
 476                                         displayNewContentPrompt(id);
 477                                 }
 478
 479                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 480
 481                                 feedu.innerHTML = ctr;
 482
 483                                 if (error) {
 484                                         feedr.className = feedr.className.replace("feed", "error");
 485                                 } else if (id > 0) {
 486                                         feedr.className = feedr.className.replace("error", "feed");
 487                                 }
 488
 489                                 if (ctr > 0) {
 490                                         feedctr.className = "feedCtrHasUnread";
 491                                         if (!feedr.className.match("Unread")) {
 492                                                 var is_selected = feedr.className.match("Selected");
 493
 494                                                 feedr.className = feedr.className.replace("Selected", "");
 495                                                 feedr.className = feedr.className.replace("Unread", "");
 496
 497                                                 feedr.className = feedr.className + "Unread";
 498
 499                                                 if (is_selected) {
 500                                                         feedr.className = feedr.className + "Selected";
 501                                                 }
 502
 503                                         }
 504
 505                                         if (row_needs_hl &&
 506                                                         !getInitParam("theme_options").match('no_highlights')) {
 507                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 508                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 509
 510                                                 cache_invalidate("F:" + id);
 511                                         }
 512                                 } else {
 513                                         feedctr.className = "feedCtrNoUnread";
 514                                         feedr.className = feedr.className.replace("Unread", "");
 515                                 }
 516                         }
 517                 }
 518
 519                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 520
 521                 var feeds_stored = number_of_feeds;
 522
 523                 console.log("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 524
 525                 if (feeds_stored != feeds_found) {
 526                         number_of_feeds = feeds_found;
 527
 528                         if (feeds_stored != 0 && feeds_found != 0) {
 529                                 console.log("Subscribed feed number changed, refreshing feedlist");
 530                                 setTimeout('updateFeedList(false, false)', 50);
 531                         }
 532                 } else {
 533 /*                      var fl = $("feeds-frame").innerHTML;
 534                         if (fl) {
 535                                 cache_invalidate("FEEDLIST");
 536                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 537                         } */
 538                 }
 539
 540         } catch (e) {
 541                 exception_error("parse_counters", e);
 542         }
 543 }
 544
 545 function parse_counters_reply(transport, scheduled_call) {
 546
 547         if (!transport.responseXML) {
 548                 notify_error("Backend did not return valid XML", true);
 549                 return;
 550         }
 551
 552         var reply = transport.responseXML.firstChild;
 553
 554         if (!reply) {
 555                 notify_error("Backend did not return expected XML object", true);
 556                 updateTitle("");
 557                 return;
 558         }
 559
 560         if (!transport_error_check(transport)) return;
 561
 562         var counters = reply.getElementsByTagName("counters")[0];
 563
 564         if (counters)
 565                 parse_counters(counters, scheduled_call);
 566
 567         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 568
 569         if (runtime_info)
 570                 parse_runtime_info(runtime_info);
 571
 572         if (feedsSortByUnread()) {
 573                 resort_feedlist();
 574         }
 575
 576         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 577
 578 }
 579
 580 function all_counters_callback2(transport) {
 581         try {
 582                 if (offline_mode) return;
 583
 584                 parse_counters_reply(transport);
 585
 586         } catch (e) {
 587                 exception_error("all_counters_callback2", e, transport);
 588         }
 589 }
 590
 591 function get_feed_unread(id) {
 592         try {
 593                 return parseInt($("FEEDU-" + id).innerHTML);
 594         } catch (e) {
 595                 return -1;
 596         }
 597 }
 598
 599 function get_cat_unread(id) {
 600         try {
 601                 var ctr = $("FCATCTR-" + id).innerHTML;
 602                 ctr = ctr.replace("(", "");
 603                 ctr = ctr.replace(")", "");
 604                 return parseInt(ctr);
 605         } catch (e) {
 606                 return -1;
 607         }
 608 }
 609
 610 function get_feed_entry_unread(elem) {
 611
 612         var id = elem.id.replace("FEEDR-", "");
 613
 614         if (id <= 0) {
 615                 return -1;
 616         }
 617
 618         try {
 619                 return parseInt($("FEEDU-" + id).innerHTML);
 620         } catch (e) {
 621                 return -1;
 622         }
 623 }
 624
 625 function get_feed_entry_name(elem) {
 626         var id = elem.id.replace("FEEDR-", "");
 627         return getFeedName(id);
 628 }
 629
 630
 631 function resort_category(node, cat_mode) {
 632
 633         try {
 634
 635                 console.log("resort_category: " + node + " CM=" + cat_mode);
 636
 637                 var by_unread = feedsSortByUnread();
 638
 639                 var list = node.getElementsByTagName("LI");
 640
 641                 for (i = 0; i < list.length; i++) {
 642
 643                         for (j = i+1; j < list.length; j++) {
 644
 645                                 var tmp_val = get_feed_entry_unread(list[i]);
 646                                 var cur_val = get_feed_entry_unread(list[j]);
 647
 648                                 var tmp_name = get_feed_entry_name(list[i]);
 649                                 var cur_name = get_feed_entry_name(list[j]);
 650
 651                                 /* we don't want to match FEEDR-0 - e.g. Archived articles */
 652
 653                                 var valid_pair = cat_mode || (list[i].id.match(/FEEDR-[1-9]/) &&
 654                                                 list[j].id.match(/FEEDR-[1-9]/));
 655
 656                                 if (valid_pair && ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name)))) {
 657                                         tempnode_i = list[i].cloneNode(true);
 658                                         tempnode_j = list[j].cloneNode(true);
 659                                         node.replaceChild(tempnode_i, list[j]);
 660                                         node.replaceChild(tempnode_j, list[i]);
 661                                 }
 662                         }
 663                 }
 664
 665         } catch (e) {
 666                 exception_error("resort_category", e);
 667         }
 668
 669 }
 670
 671 function resort_feedlist() {
 672         console.log("resort_feedlist");
 673
 674         if ($("FCATLIST--1")) {
 675
 676                 var lists = document.getElementsByTagName("UL");
 677
 678                 for (var i = 0; i < lists.length; i++) {
 679                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 680                                 resort_category(lists[i], true);
 681                         }
 682                 }
 683
 684         } else {
 685                 resort_category($("feedList"), false);
 686         }
 687 }
 688
 689 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 690   * * @author Sundar Dorai-Raj
 691   * * Email: sdoraira@vt.edu
 692   * * This program is free software; you can redistribute it and/or
 693   * * modify it under the terms of the GNU General Public License
 694   * * as published by the Free Software Foundation; either version 2
 695   * * of the License, or (at your option) any later version,
 696   * * provided that any use properly credits the author.
 697   * * This program is distributed in the hope that it will be useful,
 698   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 699   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 700   * * GNU General Public License for more details at http://www.gnu.org * * */
 701
 702   var numbers=".0123456789";
 703   function isNumeric(x) {
 704     // is x a String or a character?
 705     if(x.length>1) {
 706       // remove negative sign
 707       x=Math.abs(x)+"";
 708       for(j=0;j<x.length;j++) {
 709         // call isNumeric recursively for each character
 710         number=isNumeric(x.substring(j,j+1));
 711         if(!number) return number;
 712       }
 713       return number;
 714     }
 715     else {
 716       // if x is number return true
 717       if(numbers.indexOf(x)>=0) return true;
 718       return false;
 719     }
 720   }
 721
 722
 723 function hideOrShowFeeds(hide) {
 724
 725         try {
 726
 727         console.log("hideOrShowFeeds: " + hide);
 728
 729         if ($("FCATLIST--1")) {
 730
 731                 var lists = document.getElementsByTagName("UL");
 732
 733                 for (var i = 0; i < lists.length; i++) {
 734                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 735
 736                                 var id = lists[i].id.replace("FCATLIST-", "");
 737                                 hideOrShowFeedsCategory(id, hide);
 738                         }
 739                 }
 740
 741         } else {
 742                 hideOrShowFeedsCategory(null, hide);
 743         }
 744
 745         } catch (e) {
 746                 exception_error("hideOrShowFeeds", e);
 747         }
 748 }
 749
 750 function hideOrShowFeedsCategory(id, hide) {
 751
 752         try {
 753
 754                 var node = null;
 755                 var cat_node = null;
 756
 757                 if (id) {
 758                         node = $("FCATLIST-" + id);
 759                         cat_node = $("FCAT-" + id);
 760                 } else {
 761                         node = $("feedList"); // no categories
 762                 }
 763
 764         //      console.log("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 765
 766                 var cat_unread = 0;
 767
 768                 if (!node) {
 769                         console.log("hideOrShowFeeds: passed node is null, aborting");
 770                         return;
 771                 }
 772
 773         //      console.log("cat: " + node.id);
 774
 775                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 776                         for (i = 0; i < node.childNodes.length; i++) {
 777                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 778
 779                                 if (node.childNodes[i].style != undefined) {
 780
 781                                         var has_unread = (node.childNodes[i].className != "feed" &&
 782                                                 node.childNodes[i].className != "label" &&
 783                                                 !(!getInitParam("hide_read_shows_special") &&
 784                                                         node.childNodes[i].className == "virt") &&
 785                                                 node.childNodes[i].className != "error" &&
 786                                                 node.childNodes[i].className != "tag");
 787
 788         //                              console.log(node.childNodes[i].id + " --> " + has_unread);
 789
 790                                         if (hide && !has_unread) {
 791                                                 //node.childNodes[i].style.display = "none";
 792                                                 var id = node.childNodes[i].id;
 793                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 794                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 795                                         }
 796
 797                                         if (!hide) {
 798                                                 node.childNodes[i].style.display = "list-item";
 799                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 800                                         }
 801
 802                                         if (has_unread) {
 803                                                 node.childNodes[i].style.display = "list-item";
 804                                                 cat_unread++;
 805                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 806                                                 //Effect.Highlight(node.childNodes[i]);
 807                                         }
 808                                 }
 809                         }
 810                 }
 811
 812         //      console.log("end cat: " + node.id + " unread " + cat_unread);
 813
 814                 if (cat_node) {
 815
 816                         if (cat_unread == 0) {
 817                                 if (cat_node.style == undefined) {
 818                                         console.log("ERROR: supplied cat_node " + cat_node +
 819                                                 " has no styles. WTF?");
 820                                         return;
 821                                 }
 822                                 if (hide) {
 823                                         //cat_node.style.display = "none";
 824                                         Effect.Fade(cat_node, {duration : 0.3,
 825                                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 826                                 } else {
 827                                         cat_node.style.display = "list-item";
 828                                 }
 829                         } else {
 830                                 try {
 831                                         cat_node.style.display = "list-item";
 832                                 } catch (e) {
 833                                         console.log(e);
 834                                 }
 835                         }
 836                 }
 837
 838 //      console.log("unread for category: " + cat_unread);
 839
 840         } catch (e) {
 841                 exception_error("hideOrShowFeedsCategory", e);
 842         }
 843 }
 844
 845 function selectTableRow(r, do_select) {
 846         r.className = r.className.replace("Selected", "");
 847
 848         if (do_select) {
 849                 r.className = r.className + "Selected";
 850         }
 851 }
 852
 853 function selectTableRowById(elem_id, check_id, do_select) {
 854
 855         try {
 856
 857                 var row = $(elem_id);
 858
 859                 if (row) {
 860                         selectTableRow(row, do_select);
 861                 }
 862
 863                 var check = $(check_id);
 864
 865                 if (check) {
 866                         check.checked = do_select;
 867                 }
 868         } catch (e) {
 869                 exception_error("selectTableRowById", e);
 870         }
 871 }
 872
 873 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 874         classcheck, reset_others) {
 875
 876         var content = $(content_id);
 877
 878         if (!content) {
 879                 console.log("[selectTableRows] Element " + content_id + " not found.");
 880                 return;
 881         }
 882
 883         for (i = 0; i < content.rows.length; i++) {
 884                 if (Element.visible(content.rows[i])) {
 885                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 886
 887                                 if (content.rows[i].id.match(prefix)) {
 888                                         selectTableRow(content.rows[i], do_select);
 889
 890                                         var row_id = content.rows[i].id.replace(prefix, "");
 891                                         var check = $(check_prefix + row_id);
 892
 893                                         if (check) {
 894                                                 check.checked = do_select;
 895                                         }
 896                                 } else if (reset_others) {
 897                                         selectTableRow(content.rows[i], false);
 898
 899                                         var row_id = content.rows[i].id.replace(prefix, "");
 900                                         var check = $(check_prefix + row_id);
 901
 902                                         if (check) {
 903                                                 check.checked = false;
 904                                         }
 905
 906                                 }
 907                         } else if (reset_others) {
 908                                 selectTableRow(content.rows[i], false);
 909
 910                                 var row_id = content.rows[i].id.replace(prefix, "");
 911                                 var check = $(check_prefix + row_id);
 912
 913                                 if (check) {
 914                                         check.checked = false;
 915                                 }
 916
 917                         }
 918                 }
 919         }
 920 }
 921
 922 function getSelectedTableRowIds(content_id, prefix) {
 923
 924         var content = $(content_id);
 925
 926         if (!content) {
 927                 console.log("[getSelectedTableRowIds] Element " + content_id + " not found.");
 928                 return new Array();
 929         }
 930
 931         var sel_rows = new Array();
 932
 933         for (i = 0; i < content.rows.length; i++) {
 934                 if (content.rows[i].id.match(prefix) &&
 935                                 content.rows[i].className.match("Selected")) {
 936
 937                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 938                         sel_rows.push(row_id);
 939                 }
 940         }
 941
 942         return sel_rows;
 943
 944 }
 945
 946 function toggleSelectRowById(sender, id) {
 947         var row = $(id);
 948
 949         if (sender.checked) {
 950                 if (!row.className.match("Selected")) {
 951                         row.className = row.className + "Selected";
 952                 }
 953         } else {
 954                 if (row.className.match("Selected")) {
 955                         row.className = row.className.replace("Selected", "");
 956                 }
 957         }
 958 }
 959
 960 function toggleSelectListRow(sender) {
 961         var parent_row = sender.parentNode;
 962
 963         if (sender.checked) {
 964                 if (!parent_row.className.match("Selected")) {
 965                         parent_row.className = parent_row.className + "Selected";
 966                 }
 967         } else {
 968                 if (parent_row.className.match("Selected")) {
 969                         parent_row.className = parent_row.className.replace("Selected", "");
 970                 }
 971         }
 972 }
 973
 974 function tSR(sender) {
 975         return toggleSelectRow(sender);
 976 }
 977
 978 function toggleSelectRow(sender) {
 979         var parent_row = sender.parentNode.parentNode;
 980
 981         if (sender.checked) {
 982                 if (!parent_row.className.match("Selected")) {
 983                         parent_row.className = parent_row.className + "Selected";
 984                 }
 985         } else {
 986                 if (parent_row.className.match("Selected")) {
 987                         parent_row.className = parent_row.className.replace("Selected", "");
 988                 }
 989         }
 990 }
 991
 992 function getNextUnreadCat(id) {
 993         try {
 994                 var rows = $("feedList").getElementsByTagName("LI");
 995                 var feeds = new Array();
 996
 997                 var unread_only = true;
 998                 var is_cat = true;
 999
1000                 for (var i = 0; i < rows.length; i++) {
1001                         if (rows[i].id.match("FCAT-")) {
1002                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1003
1004                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1005
1006                                         if (cat_id >= 0) {
1007                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1008                                                         feeds.push(cat_id);
1009                                                 }
1010                                         }
1011                                 }
1012                         }
1013                 }
1014
1015                 var idx = feeds.indexOf(id);
1016                 if (idx != -1 && idx < feeds.length) {
1017                         return feeds[idx+1];
1018                 } else {
1019                         return feeds.shift();
1020                 }
1021
1022         } catch (e) {
1023                 exception_error("getNextUnreadCat", e);
1024         }
1025 }
1026
1027 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1028         try {
1029
1030 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1031
1032                 var rows = $("feedList").getElementsByTagName("LI");
1033                 var feeds = new Array();
1034
1035                 for (var i = 0; i < rows.length; i++) {
1036                         if (rows[i].id.match("FEEDR-")) {
1037
1038                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1039
1040                                         if (!unread_only ||
1041                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1042                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1043                                         }
1044                                 }
1045                         }
1046
1047                         if (rows[i].id.match("FCAT-")) {
1048                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1049
1050                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1051
1052                                         if (cat_id >= 0) {
1053                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1054                                                         feeds.push("CAT:"+cat_id);
1055                                                 }
1056                                         }
1057                                 }
1058                         }
1059                 }
1060
1061 //              alert(feeds.toString());
1062
1063                 if (!id) {
1064                         if (direction == "next") {
1065                                 return feeds.shift();
1066                         } else {
1067                                 return feeds.pop();
1068                         }
1069                 } else {
1070                         if (direction == "next") {
1071                                 if (is_cat) id = "CAT:" + id;
1072                                 var idx = feeds.indexOf(id);
1073                                 if (idx != -1 && idx < feeds.length) {
1074                                         return feeds[idx+1];
1075                                 } else {
1076                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1077                                 }
1078                         } else {
1079                                 if (is_cat) id = "CAT:" + id;
1080                                 var idx = feeds.indexOf(id);
1081                                 if (idx > 0) {
1082                                         return feeds[idx-1];
1083                                 } else {
1084                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1085                                 }
1086                         }
1087
1088                 }
1089
1090         } catch (e) {
1091                 exception_error("getRelativeFeedId2", e);
1092         }
1093 }
1094
1095 function checkboxToggleElement(elem, id) {
1096         if (elem.checked) {
1097                 Effect.Appear(id, {duration : 0.5});
1098         } else {
1099                 Effect.Fade(id, {duration : 0.5});
1100         }
1101 }
1102
1103 function dropboxSelect(e, v) {
1104         for (i = 0; i < e.length; i++) {
1105                 if (e[i].value == v) {
1106                         e.selectedIndex = i;
1107                         break;
1108                 }
1109         }
1110 }
1111
1112 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1113 // bugfixed just a little bit :-)
1114 function getURLParam(strParamName){
1115   var strReturn = "";
1116   var strHref = window.location.href;
1117
1118   if (strHref.indexOf("#") == strHref.length-1) {
1119                 strHref = strHref.substring(0, strHref.length-1);
1120   }
1121
1122   if ( strHref.indexOf("?") > -1 ){
1123     var strQueryString = strHref.substr(strHref.indexOf("?"));
1124     var aQueryString = strQueryString.split("&");
1125     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1126       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1127         var aParam = aQueryString[iParam].split("=");
1128         strReturn = aParam[1];
1129         break;
1130       }
1131     }
1132   }
1133   return strReturn;
1134 }
1135
1136 function leading_zero(p) {
1137         var s = String(p);
1138         if (s.length == 1) s = "0" + s;
1139         return s;
1140 }
1141
1142 function make_timestamp() {
1143         var d = new Date();
1144
1145         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1146                         ":" + leading_zero(d.getSeconds());
1147 }
1148
1149
1150 function closeErrorBox() {
1151
1152         if (Element.visible("errorBoxShadow")) {
1153                 Element.hide("dialog_overlay");
1154                 Element.hide("errorBoxShadow");
1155
1156                 enableHotkeys();
1157         }
1158
1159         return false;
1160 }
1161
1162 function closeInfoBox(cleanup) {
1163
1164         try {
1165                 enableHotkeys();
1166
1167                 if (Element.visible("infoBoxShadow")) {
1168                         Element.hide("dialog_overlay");
1169                         Element.hide("infoBoxShadow");
1170
1171                         if (cleanup) $("infoBox").innerHTML = "&nbsp;";
1172                 }
1173         } catch (e) {
1174                 exception_error("closeInfoBox", e);
1175         }
1176
1177         return false;
1178 }
1179
1180
1181 function displayDlg(id, param, callback) {
1182
1183         notify_progress("Loading, please wait...", true);
1184
1185         disableHotkeys();
1186
1187         var query = "?op=dlg&id=" +
1188                 param_escape(id) + "&param=" + param_escape(param);
1189
1190         new Ajax.Request("backend.php", {
1191                 parameters: query,
1192                 onComplete: function (transport) {
1193                         infobox_callback2(transport);
1194                         if (callback) callback(transport);
1195                 } });
1196
1197         return false;
1198 }
1199
1200 function infobox_submit_callback2(transport) {
1201         closeInfoBox();
1202
1203         try {
1204                 // called from prefs, reload tab
1205                 if (typeof active_tab != 'undefined' && active_tab) {
1206                         selectTab(active_tab, false);
1207                 }
1208         } catch (e) { }
1209
1210         if (transport.responseText) {
1211                 notify_info(transport.responseText);
1212         }
1213 }
1214
1215 function infobox_callback2(transport) {
1216         try {
1217
1218                 console.log("infobox_callback2");
1219
1220                 var box = $('infoBox');
1221
1222                 if (box) {
1223
1224                         if (!getInitParam("infobox_disable_overlay")) {
1225                                 Element.show("dialog_overlay");
1226                         }
1227
1228                         box.innerHTML=transport.responseText;
1229                         Element.show("infoBoxShadow");
1230                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
1231
1232
1233                 }
1234
1235                 disableHotkeys();
1236
1237                 notify("");
1238         } catch (e) {
1239                 exception_error("infobox_callback2", e);
1240         }
1241 }
1242
1243 function createFilter() {
1244
1245         try {
1246
1247                 var form = document.forms['filter_add_form'];
1248                 var reg_exp = form.reg_exp.value;
1249
1250                 if (reg_exp == "") {
1251                         alert(__("Can't add filter: nothing to match on."));
1252                         return false;
1253                 }
1254
1255                 var query = Form.serialize("filter_add_form");
1256
1257                 // we can be called from some other tab in Prefs
1258                 if (typeof active_tab != 'undefined' && active_tab) {
1259                         active_tab = "filterConfig";
1260                 }
1261
1262                 new Ajax.Request("backend.php?" + query, {
1263                         onComplete: function (transport) {
1264                                 infobox_submit_callback2(transport);
1265                         } });
1266
1267                 return true;
1268
1269         } catch (e) {
1270                 exception_error("createFilter", e);
1271         }
1272 }
1273
1274 function isValidURL(s) {
1275         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1276 }
1277
1278 function subscribeToFeed() {
1279
1280         try {
1281
1282         var form = document.forms['feed_add_form'];
1283         var feed_url = form.feed_url.value;
1284
1285         if (feed_url == "") {
1286                 alert(__("Can't subscribe: no feed URL given."));
1287                 return false;
1288         }
1289
1290         notify_progress(__("Subscribing to feed..."), true);
1291
1292         var query = Form.serialize("feed_add_form");
1293
1294         console.log("subscribe q: " + query);
1295
1296         Form.disable("feed_add_form");
1297
1298         new Ajax.Request("backend.php", {
1299                 parameters: query,
1300                 onComplete: function(transport) {
1301                         //dlg_frefresh_callback(transport);
1302
1303                         try {
1304
1305                                 if (!transport.responseXML)
1306                                         console.log(transport.responseText);
1307
1308                                 var result = transport.responseXML.getElementsByTagName('result')[0];
1309                                 var rc = parseInt(result.getAttribute('code'));
1310
1311                                 Form.enable("feed_add_form");
1312
1313                                 notify('');
1314
1315                                 switch (rc) {
1316                                 case 1:
1317                                         closeInfoBox();
1318                                         notify_info(__("Subscribed to %s").replace("%s", feed_url));
1319
1320                                         if (inPreferences()) {
1321                                                 updateFeedList();
1322                                         } else {
1323                                                 setTimeout('updateFeedList(false, false)', 50);
1324                                         }
1325                                         break;
1326                                 case 2:
1327                                         alert(__("Specified URL seems to be invalid."));
1328                                         break;
1329                                 case 3:
1330                                         alert(__("Specified URL doesn't seem to contain any feeds."));
1331                                         break;
1332                                 case 4:
1333                                         new Ajax.Request("backend.php", {
1334                                                 parameters: 'op=rpc&subop=extractfeedurls&url=' + encodeURIComponent(feed_url),
1335                                                 onComplete: function(transport) {
1336                                                         var result = transport.responseXML.getElementsByTagName('urls')[0];
1337                                                         var feeds = JSON.parse(result.firstChild.nodeValue);
1338                                                         var select = document.getElementById("faad_feeds_container_select");
1339
1340                                                         while (select.hasChildNodes()) {
1341                                                                 select.removeChild(elem.firstChild);
1342                                                         }
1343                                                         var count = 0;
1344                                                         for (var feedUrl in feeds) {
1345                                                                 select.insert(new Option(feeds[feedUrl], feedUrl, false));
1346                                                                 count++;
1347                                                         }
1348                                                         if (count > 5) count = 5;
1349                                                         select.size = count;
1350
1351                                                         Effect.Appear('fadd_feeds_container', {duration : 0.5});
1352                                                 }
1353                                         });
1354                                         break;
1355                                 case 5:
1356                                         alert(__("Couldn't download the specified URL."));
1357                                         break;
1358                                 case 0:
1359                                         alert(__("You are already subscribed to this feed."));
1360                                         break;
1361                                 }
1362
1363                         } catch (e) {
1364                                 exception_error("subscribeToFeed", e);
1365                         }
1366
1367                 } });
1368
1369         } catch (e) {
1370                 exception_error("subscribeToFeed", e);
1371         }
1372
1373         return false;
1374 }
1375
1376 function filterCR(e, f)
1377 {
1378      var key;
1379
1380      if(window.event)
1381           key = window.event.keyCode;     //IE
1382      else
1383           key = e.which;     //firefox
1384
1385         if (key == 13) {
1386                 if (typeof f != 'undefined') {
1387                         f();
1388                         return false;
1389                 } else {
1390                         return false;
1391                 }
1392         } else {
1393                 return true;
1394         }
1395 }
1396
1397 function getInitParam(key) {
1398         return init_params[key];
1399 }
1400
1401 function setInitParam(key, value) {
1402         init_params[key] = value;
1403 }
1404
1405 function fatalError(code, msg, ext_info) {
1406         try {
1407
1408                 if (!ext_info) ext_info = "N/A";
1409
1410                 if (code == 6) {
1411                         window.location.href = "tt-rss.php";
1412                 } else if (code == 5) {
1413                         window.location.href = "db-updater.php";
1414                 } else {
1415
1416                         if (msg == "") msg = "Unknown error";
1417
1418                         var ebc = $("xebContent");
1419
1420                         if (ebc) {
1421
1422                                 Element.show("dialog_overlay");
1423                                 Element.show("errorBoxShadow");
1424                                 Element.hide("xebBtn");
1425
1426                                 if (ext_info) {
1427                                         if (ext_info.responseText) {
1428                                                 ext_info = ext_info.responseText;
1429                                         }
1430                                 }
1431
1432                                 ebc.innerHTML =
1433                                         "<div><b>Error message:</b></div>" +
1434                                         "<pre>" + msg + "</pre>" +
1435                                         "<div><b>Additional information:</b></div>" +
1436                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1437                         }
1438                 }
1439
1440         } catch (e) {
1441                 exception_error("fatalError", e);
1442         }
1443 }
1444
1445 function getFeedName(id, is_cat) {
1446         var e;
1447
1448         if (is_cat) {
1449                 e = $("FCATN-" + id);
1450         } else {
1451                 e = $("FEEDN-" + id);
1452         }
1453         if (e) {
1454                 return e.innerHTML.stripTags();
1455         } else {
1456                 return null;
1457         }
1458 }
1459
1460 function filterDlgCheckType(sender) {
1461
1462         try {
1463
1464                 var ftype = sender[sender.selectedIndex].value;
1465
1466                 var form = document.forms["filter_add_form"];
1467
1468                 if (!form) {
1469                         form = document.forms["filter_edit_form"];
1470                 }
1471
1472                 if (!form) {
1473                         console.log("filterDlgCheckType: can't find form!");
1474                         return;
1475                 }
1476
1477                 // if selected filter type is 5 (Date) enable the modifier dropbox
1478                 if (ftype == 5) {
1479                         Element.show("filter_dlg_date_mod_box");
1480                         Element.show("filter_dlg_date_chk_box");
1481                 } else {
1482                         Element.hide("filter_dlg_date_mod_box");
1483                         Element.hide("filter_dlg_date_chk_box");
1484
1485                 }
1486
1487         } catch (e) {
1488                 exception_error("filterDlgCheckType", e);
1489         }
1490
1491 }
1492
1493 function filterDlgCheckAction(sender) {
1494
1495         try {
1496
1497                 var action = sender[sender.selectedIndex].value;
1498
1499                 var form = document.forms["filter_add_form"];
1500
1501                 if (!form) {
1502                         form = document.forms["filter_edit_form"];
1503                 }
1504
1505                 if (!form) {
1506                         console.log("filterDlgCheckAction: can't find form!");
1507                         return;
1508                 }
1509
1510                 var action_param = $("filter_dlg_param_box");
1511
1512                 if (!action_param) {
1513                         console.log("filterDlgCheckAction: can't find action param box!");
1514                         return;
1515                 }
1516
1517                 // if selected action supports parameters, enable params field
1518                 if (action == 4 || action == 6 || action == 7) {
1519                         Element.show(action_param);
1520                         if (action != 7) {
1521                                 Element.show(form.action_param);
1522                                 Element.hide(form.action_param_label);
1523                         } else {
1524                                 Element.show(form.action_param_label);
1525                                 Element.hide(form.action_param);
1526                         }
1527                 } else {
1528                         Element.hide(action_param);
1529                 }
1530
1531         } catch (e) {
1532                 exception_error("filterDlgCheckAction", e);
1533         }
1534
1535 }
1536
1537 function filterDlgCheckDate() {
1538         try {
1539                 var form = document.forms["filter_add_form"];
1540
1541                 if (!form) {
1542                         form = document.forms["filter_edit_form"];
1543                 }
1544
1545                 if (!form) {
1546                         console.log("filterDlgCheckAction: can't find form!");
1547                         return;
1548                 }
1549
1550                 var reg_exp = form.reg_exp.value;
1551
1552                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
1553
1554                 new Ajax.Request("backend.php", {
1555                         parameters: query,
1556                         onComplete: function(transport) {
1557
1558                                 var form = document.forms["filter_add_form"];
1559
1560                                 if (!form) {
1561                                         form = document.forms["filter_edit_form"];
1562                                 }
1563
1564                                 if (transport.responseXML) {
1565                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1566
1567                                         if (result && result.firstChild) {
1568                                                 if (result.firstChild.nodeValue == "1") {
1569
1570                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1571
1572                                                         return;
1573                                                 }
1574                                         }
1575                                 }
1576
1577                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1578
1579                         } });
1580
1581
1582         } catch (e) {
1583                 exception_error("filterDlgCheckDate", e);
1584         }
1585 }
1586
1587 function explainError(code) {
1588         return displayDlg("explainError", code);
1589 }
1590
1591 // this only searches loaded headlines list, not in CDM
1592 function getRelativePostIds(id, limit) {
1593
1594         if (!limit) limit = 3;
1595
1596         console.log("getRelativePostIds: " + id + " limit=" + limit);
1597
1598         var ids = new Array();
1599         var container = $("headlinesList");
1600
1601         if (container) {
1602                 var rows = container.rows;
1603
1604                 for (var i = 0; i < rows.length; i++) {
1605                         var r_id = rows[i].id.replace("RROW-", "");
1606
1607                         if (r_id == id) {
1608                                 for (var k = 1; k <= limit; k++) {
1609                                         var nid = false;
1610
1611                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1612                                         if (nid) ids.push(nid);
1613
1614                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1615                                         if (nid) ids.push(nid);
1616                                 }
1617
1618                                 return ids;
1619                         }
1620                 }
1621         }
1622
1623         return false;
1624 }
1625
1626 function openArticleInNewWindow(id) {
1627         try {
1628                 console.log("openArticleInNewWindow: " + id);
1629
1630                 var query = "?op=rpc&subop=getArticleLink&id=" + id;
1631                 var wname = "ttrss_article_" + id;
1632
1633                 console.log(query + " " + wname);
1634
1635                 var w = window.open("", wname);
1636
1637                 if (!w) notify_error("Failed to open window for the article");
1638
1639                 new Ajax.Request("backend.php", {
1640                         parameters: query,
1641                         onComplete: function(transport) {
1642
1643                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1644                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1645
1646                                         console.log("open_article received link: " + link);
1647
1648                                         if (link && id) {
1649
1650                                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
1651
1652                                                 console.log("link url: " + link.firstChild.nodeValue + ", wname " + wname);
1653
1654                                                 var w = window.open(link.firstChild.nodeValue, wname);
1655
1656                                                 if (!w) { notify_error("Failed to load article in new window"); }
1657
1658                                                 if (id) {
1659                                                         id = id.firstChild.nodeValue;
1660                                                         if (!$("headlinesList")) {
1661                                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
1662                                                         }
1663                                                 }
1664                                         } else {
1665                                                 notify_error("Can't open article: received invalid article link");
1666                                         }
1667                                 } });
1668
1669         } catch (e) {
1670                 exception_error("openArticleInNewWindow", e);
1671         }
1672 }
1673
1674 function isCdmMode() {
1675         return !$("headlinesList");
1676 }
1677
1678 function getSelectedArticleIds2() {
1679         var rows = new Array();
1680         var cdm_mode = isCdmMode();
1681
1682         if (cdm_mode) {
1683                 rows = cdmGetSelectedArticles();
1684         } else {
1685                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1686         }
1687
1688         var ids = new Array();
1689
1690         for (var i = 0; i < rows.length; i++) {
1691                 var chk = $("RCHK-" + rows[i]);
1692                 if (chk && chk.checked) {
1693                         ids.push(rows[i]);
1694                 }
1695         }
1696
1697         return ids;
1698 }
1699
1700 function displayHelpInfobox(topic_id) {
1701
1702         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1703
1704         var w = window.open(url, "ttrss_help",
1705                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1706
1707 }
1708
1709 function loading_set_progress(p) {
1710         try {
1711                 if (p < last_progress_point || !Element.visible("overlay")) return;
1712
1713                 console.log("loading_set_progress : " + p + " (" + last_progress_point + ")");
1714
1715                 var o = $("l_progress_i");
1716
1717 //              o.style.width = (p * 2) + "px";
1718
1719                 new Effect.Scale(o, p, {
1720                         scaleY : false,
1721                         scaleFrom : last_progress_point,
1722                         scaleMode: { originalWidth : 200 },
1723                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1724
1725                 last_progress_point = p;
1726
1727         } catch (e) {
1728                 exception_error("loading_set_progress", e);
1729         }
1730 }
1731
1732 function remove_splash() {
1733         if (Element.visible("overlay")) {
1734                 console.log("about to remove splash, OMG!");
1735                 Element.hide("overlay");
1736                 console.log("removed splash!");
1737         }
1738 }
1739
1740 function getSelectedFeedsFromBrowser() {
1741
1742         var list = $("browseFeedList");
1743
1744         var selected = new Array();
1745
1746         for (i = 0; i < list.childNodes.length; i++) {
1747                 var child = list.childNodes[i];
1748                 if (child.id && child.id.match("FBROW-")) {
1749                         var id = child.id.replace("FBROW-", "");
1750
1751                         var cb = $("FBCHK-" + id);
1752
1753                         if (cb.checked) {
1754                                 selected.push(id);
1755                         }
1756                 }
1757         }
1758
1759         return selected;
1760 }
1761
1762 function updateFeedBrowser() {
1763         try {
1764
1765                 var query = Form.serialize("feed_browser");
1766
1767                 Element.show('feed_browser_spinner');
1768
1769                 new Ajax.Request("backend.php", {
1770                         parameters: query,
1771                         onComplete: function(transport) {
1772                                 notify('');
1773
1774                                 Element.hide('feed_browser_spinner');
1775
1776                                 var c = $("browseFeedList");
1777                                 var r = transport.responseXML.getElementsByTagName("content")[0];
1778                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
1779                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
1780
1781                                 if (c && r) {
1782                                         c.innerHTML = r.firstChild.nodeValue;
1783                                 }
1784
1785                                 if (parseInt(mode.getAttribute("value")) == 2) {
1786                                         Element.show('feed_archive_remove');
1787                                 } else {
1788                                         Element.hide('feed_archive_remove');
1789                                 }
1790
1791                         } });
1792
1793         } catch (e) {
1794                 exception_error("updateFeedBrowser", e);
1795         }
1796
1797 }
1798
1799 function transport_error_check(transport) {
1800         try {
1801                 if (transport.responseXML) {
1802                         var error = transport.responseXML.getElementsByTagName("error")[0];
1803
1804                         if (error) {
1805                                 var code = error.getAttribute("error-code");
1806                                 var msg = error.getAttribute("error-msg");
1807                                 if (code != 0) {
1808                                         fatalError(code, msg);
1809                                         return false;
1810                                 }
1811                         }
1812                 }
1813         } catch (e) {
1814                 exception_error("check_for_error_xml", e);
1815         }
1816         return true;
1817 }
1818
1819 function strip_tags(s) {
1820         return s.replace(/<\/?[^>]+(>|$)/g, "");
1821 }
1822
1823 function truncate_string(s, length) {
1824         if (!length) length = 30;
1825         var tmp = s.substring(0, length);
1826         if (s.length > length) tmp += "&hellip;";
1827         return tmp;
1828 }
1829
1830 function hotkey_prefix_timeout() {
1831         try {
1832
1833                 var date = new Date();
1834                 var ts = Math.round(date.getTime() / 1000);
1835
1836                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
1837                         console.log("hotkey_prefix seems to be stuck, aborting");
1838                         hotkey_prefix_pressed = false;
1839                         hotkey_prefix = false;
1840                         Element.hide('cmdline');
1841                 }
1842
1843                 setTimeout("hotkey_prefix_timeout()", 1000);
1844
1845         } catch  (e) {
1846                 exception_error("hotkey_prefix_timeout", e);
1847         }
1848 }
1849
1850 function hideAuxDlg() {
1851         try {
1852                 Element.hide('auxDlg');
1853         } catch (e) {
1854                 exception_error("hideAuxDlg", e);
1855         }
1856 }
1857
1858 function displayNewContentPrompt(id) {
1859         try {
1860
1861                 var msg = "<a href='#' onclick='viewfeed("+id+")'>" +
1862                         __("New articles available in this feed (click to show)") + "</a>";
1863
1864                 msg = msg.replace("%s", getFeedName(id));
1865
1866                 $('auxDlg').innerHTML = msg;
1867
1868                 new Effect.Appear('auxDlg', {duration : 0.5});
1869
1870         } catch (e) {
1871                 exception_error("displayNewContentPrompt", e);
1872         }
1873 }
1874
1875 function feedBrowserSubscribe() {
1876         try {
1877
1878                 var selected = getSelectedFeedsFromBrowser();
1879
1880                 var mode = document.forms['feed_browser'].mode;
1881
1882                 mode = mode[mode.selectedIndex].value;
1883
1884                 if (selected.length > 0) {
1885                         closeInfoBox();
1886
1887                         notify_progress("Loading, please wait...", true);
1888
1889                         var query = "?op=rpc&subop=massSubscribe&ids="+
1890                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1891
1892                         new Ajax.Request("backend.php", {
1893                                 parameters: query,
1894                                 onComplete: function(transport) {
1895
1896                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1897                                         var nf_value = nf.getAttribute("value");
1898
1899                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1900
1901                                         if (inPreferences()) {
1902                                                 updateFeedList();
1903                                         } else {
1904                                                 setTimeout('updateFeedList(false, false)', 50);
1905                                         }
1906                                 } });
1907
1908                 } else {
1909                         alert(__("No feeds are selected."));
1910                 }
1911
1912         } catch (e) {
1913                 exception_error("feedBrowserSubscribe", e);
1914         }
1915 }
1916
1917 function feedArchiveRemove() {
1918         try {
1919
1920                 var selected = getSelectedFeedsFromBrowser();
1921
1922                 if (selected.length > 0) {
1923
1924                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1925
1926                         if (confirm(pr)) {
1927                                 Element.show('feed_browser_spinner');
1928
1929                                 var query = "?op=rpc&subop=remarchived&ids=" +
1930                                         param_escape(selected.toString());;
1931
1932                                 new Ajax.Request("backend.php", {
1933                                         parameters: query,
1934                                         onComplete: function(transport) {
1935                                                 updateFeedBrowser();
1936                                         } });
1937                         }
1938
1939                 } else {
1940                         alert(__("No feeds are selected."));
1941                 }
1942
1943         } catch (e) {
1944                 exception_error("feedArchiveRemove", e);
1945         }
1946 }
1947
1948 function uploadIconHandler(rc) {
1949         try {
1950                 switch (rc) {
1951                         case 0:
1952                                 notify_info("Upload complete.");
1953                                 if (inPreferences()) {
1954                                         updateFeedList();
1955                                 } else {
1956                                         setTimeout('updateFeedList(false, false)', 50);
1957                                 }
1958                                 break;
1959                         case 1:
1960                                 notify_error("Upload failed: icon is too big.");
1961                                 break;
1962                         case 2:
1963                                 notify_error("Upload failed.");
1964                                 break;
1965                 }
1966
1967         } catch (e) {
1968                 exception_error("uploadIconHandler", e);
1969         }
1970 }
1971
1972 function removeFeedIcon(id) {
1973
1974         try {
1975
1976                 if (confirm(__("Remove stored feed icon?"))) {
1977                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
1978
1979                         console.log(query);
1980
1981                         notify_progress("Removing feed icon...", true);
1982
1983                         new Ajax.Request("backend.php", {
1984                                 parameters: query,
1985                                 onComplete: function(transport) {
1986                                         notify_info("Feed icon removed.");
1987                                         if (inPreferences()) {
1988                                                 updateFeedList();
1989                                         } else {
1990                                                 setTimeout('updateFeedList(false, false)', 50);
1991                                         }
1992                                 } });
1993                 }
1994
1995                 return false;
1996         } catch (e) {
1997                 exception_error("uploadFeedIcon", e);
1998         }
1999 }
2000
2001 function uploadFeedIcon() {
2002
2003         try {
2004
2005                 var file = $("icon_file");
2006
2007                 if (file.value.length == 0) {
2008                         alert(__("Please select an image file to upload."));
2009                 } else {
2010                         if (confirm(__("Upload new icon for this feed?"))) {
2011                                 notify_progress("Uploading, please wait...", true);
2012                                 return true;
2013                         }
2014                 }
2015
2016                 return false;
2017
2018         } catch (e) {
2019                 exception_error("uploadFeedIcon", e);
2020         }
2021 }
2022
2023 function addLabel(select, callback) {
2024
2025         try {
2026
2027                 var caption = prompt(__("Please enter label caption:"), "");
2028
2029                 if (caption != undefined) {
2030
2031                         if (caption == "") {
2032                                 alert(__("Can't create label: missing caption."));
2033                                 return false;
2034                         }
2035
2036                         var query = "?op=pref-labels&subop=add&caption=" +
2037                                 param_escape(caption);
2038
2039                         if (select)
2040                                 query += "&output=select";
2041
2042                         notify_progress("Loading, please wait...", true);
2043
2044                         if (inPreferences() && !select) active_tab = "labelConfig";
2045
2046                         new Ajax.Request("backend.php", {
2047                                 parameters: query,
2048                                 onComplete: function(transport) {
2049                                         if (callback) {
2050                                                 callback(transport);
2051                                         } else if (inPreferences()) {
2052                                                 infobox_submit_callback2(transport);
2053                                         } else {
2054                                                 updateFeedList();
2055                                         }
2056                         } });
2057
2058                 }
2059
2060         } catch (e) {
2061                 exception_error("addLabel", e);
2062         }
2063 }
2064
2065 function quickAddFeed() {
2066         displayDlg('quickAddFeed', '',
2067            function () {$('feed_url').focus();});
2068 }
2069
2070 function quickAddFilter() {
2071         displayDlg('quickAddFilter', '',
2072            function () {document.forms['filter_add_form'].reg_exp.focus();});
2073 }
2074
2075 function unsubscribeFeed(feed_id, title) {
2076
2077         var msg = __("Unsubscribe from %s?").replace("%s", title);
2078
2079         if (title == undefined || confirm(msg)) {
2080                 notify_progress("Removing feed...");
2081
2082                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
2083
2084                 new Ajax.Request("backend.php", {
2085                         parameters: query,
2086                         onComplete: function(transport) {
2087
2088                                         closeInfoBox();
2089
2090                                         if (inPreferences()) {
2091                                                 updateFeedList();
2092                                         } else {
2093                                                 dlg_frefresh_callback(transport, feed_id);
2094                                         }
2095
2096                                 } });
2097         }
2098
2099         return false;
2100 }
2101
2102
2103 function backend_sanity_check_callback(transport) {
2104
2105         try {
2106
2107                 if (sanity_check_done) {
2108                         fatalError(11, "Sanity check request received twice. This can indicate "+
2109                       "presence of Firebug or some other disrupting extension. "+
2110                                 "Please disable it and try again.");
2111                         return;
2112                 }
2113
2114                 if (!transport.responseXML) {
2115                         if (!store) {
2116                                 fatalError(3, "Sanity check: Received reply is not XML",
2117                                         transport.responseText);
2118                                 return;
2119                         } else {
2120                                 init_offline();
2121                                 return;
2122                         }
2123                 }
2124
2125                 if (getURLParam("offline")) {
2126                         return init_offline();
2127                 }
2128
2129                 var reply = transport.responseXML.getElementsByTagName("error")[0];
2130
2131                 if (!reply) {
2132                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
2133                         return;
2134                 }
2135
2136                 var error_code = reply.getAttribute("error-code");
2137
2138                 if (error_code && error_code != 0) {
2139                         return fatalError(error_code, reply.getAttribute("error-msg"));
2140                 }
2141
2142                 console.log("sanity check ok");
2143
2144                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
2145
2146                 if (params) {
2147                         console.log('reading init-params...');
2148
2149                         params = JSON.parse(params.firstChild.nodeValue);
2150
2151                         if (params) {
2152                                 for (k in params) {
2153
2154                                         var v = params[k];
2155
2156                                         console.log("IP: " + k + " => " + v);
2157
2158                                         if (db) {
2159                                                 db.execute("DELETE FROM init_params WHERE key = ?", [k]);
2160                                                 db.execute("INSERT INTO init_params (key,value) VALUES (?, ?)",
2161                                                         [k, v]);
2162                                         }
2163                                 }
2164                         }
2165
2166                         init_params = params;
2167                 }
2168
2169                 sanity_check_done = true;
2170
2171                 init_second_stage();
2172
2173         } catch (e) {
2174                 exception_error("backend_sanity_check_callback", e, transport);
2175         }
2176 }
2177
2178 function has_local_storage() {
2179         try {
2180                 return 'localStorage' in window && window['localStorage'] != null;
2181         } catch (e) {
2182                 return false;
2183         }
2184 }
2185
2186 function catSelectOnChange(elem) {
2187         try {
2188                 var value = elem[elem.selectedIndex].value;
2189                 var def = elem.getAttribute('default');
2190
2191                 if (value == "ADD_CAT") {
2192
2193                         if (def)
2194                                 dropboxSelect(elem, def);
2195                         else
2196                                 elem.selectedIndex = 0;
2197
2198                         quickAddCat(elem);
2199                 }
2200
2201         } catch (e) {
2202                 exception_error("catSelectOnChange", e);
2203         }
2204 }
2205
2206 function quickAddCat(elem) {
2207         try {
2208                 var cat = prompt(__("Please enter category title:"));
2209
2210                 if (cat) {
2211
2212                         var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
2213
2214                         notify_progress("Loading, please wait...", true);
2215
2216                         new Ajax.Request("backend.php", {
2217                                 parameters: query,
2218                                 onComplete: function (transport) {
2219                                         var response = transport.responseXML;
2220                                         var select = response.getElementsByTagName("select")[0];
2221                                         var options = select.getElementsByTagName("option");
2222
2223                                         dropbox_replace_options(elem, options);
2224
2225                                         notify('');
2226
2227                         } });
2228
2229                 }
2230
2231         } catch (e) {
2232                 exception_error("quickAddCat", e);
2233         }
2234 }
2235
2236 function genUrlChangeKey(feed, is_cat) {
2237
2238         try {
2239                 var ok = confirm(__("Generate new syndication address for this feed?"));
2240
2241                 if (ok) {
2242
2243                         notify_progress("Trying to change address...", true);
2244
2245                         var query = "?op=rpc&subop=regenFeedKey&id=" + param_escape(feed) +
2246                                 "&is_cat=" + param_escape(is_cat);
2247
2248                         new Ajax.Request("backend.php", {
2249                                 parameters: query,
2250                                 onComplete: function(transport) {
2251                                                 var new_link = transport.responseXML.getElementsByTagName("link")[0];
2252
2253                                                 var e = $('gen_feed_url');
2254
2255                                                 if (new_link) {
2256
2257                                                         new_link = new_link.firstChild.nodeValue;
2258
2259                                                         e.innerHTML = e.innerHTML.replace(/\&amp;key=.*$/,
2260                                                                 "&amp;key=" + new_link);
2261
2262                                                         e.href = e.href.replace(/\&amp;key=.*$/,
2263                                                                 "&amp;key=" + new_link);
2264
2265                                                         new Effect.Highlight(e);
2266
2267                                                         notify('');
2268
2269                                                 } else {
2270                                                         notify_error("Could not change feed URL.");
2271                                                 }
2272                                 } });
2273                 }
2274         } catch (e) {
2275                 exception_error("genUrlChangeKey", e);
2276         }
2277         return false;
2278 }
2279
2280 function labelSelectOnChange(elem) {
2281         try {
2282                 var value = elem[elem.selectedIndex].value;
2283                 var def = elem.getAttribute('default');
2284
2285                 if (value == "ADD_LABEL") {
2286
2287                         if (def)
2288                                 dropboxSelect(elem, def);
2289                         else
2290                                 elem.selectedIndex = 0;
2291
2292                         addLabel(elem, function(transport) {
2293
2294                                         try {
2295
2296                                                 var response = transport.responseXML;
2297                                                 var select = response.getElementsByTagName("select")[0];
2298                                                 var options = select.getElementsByTagName("option");
2299
2300                                                 dropbox_replace_options(elem, options);
2301
2302                                                 notify('');
2303                                         } catch (e) {
2304                                                 exception_error("addLabel", e);
2305                                         }
2306                         });
2307                 }
2308
2309         } catch (e) {
2310                 exception_error("labelSelectOnChange", e);
2311         }
2312 }
2313
2314 function dropbox_replace_options(elem, options) {
2315
2316         try {
2317                 while (elem.hasChildNodes())
2318                         elem.removeChild(elem.firstChild);
2319
2320                 var sel_idx = -1;
2321
2322                 for (var i = 0; i < options.length; i++) {
2323                         var text = options[i].firstChild.nodeValue;
2324                         var value = options[i].getAttribute("value");
2325
2326                         if (value == undefined) value = text;
2327
2328                         var issel = options[i].getAttribute("selected") == "1";
2329
2330                         var option = new Option(text, value, issel);
2331
2332                         if (options[i].getAttribute("disabled"))
2333                                 option.setAttribute("disabled", true);
2334
2335                         elem.insert(option);
2336
2337                         if (issel) sel_idx = i;
2338                 }
2339
2340                 // Chrome doesn't seem to just select stuff when you pass new Option(x, y, true)
2341                 if (sel_idx >= 0) elem.selectedIndex = sel_idx;
2342
2343         } catch (e) {
2344                 exception_error("dropbox_replace_options", e);
2345         }
2346 }