functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var last_progress_point = 0;
   4 var async_counters_work = false;
   5 var sanity_check_done = 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 /* create console.log if it doesn't exist */
  16
  17 if (!window.console) console = {};
  18 console.log = console.log || function(msg) { };
  19 console.warn = console.warn || function(msg) { };
  20 console.error = console.error || function(msg) { };
  21
  22 function exception_error(location, e, ext_info) {
  23         var msg = format_exception_error(location, e);
  24
  25         if (!ext_info) ext_info = false;
  26
  27         disableHotkeys();
  28
  29         try {
  30
  31                 var ebc = $("xebContent");
  32
  33                 if (ebc) {
  34
  35                         Element.show("dialog_overlay");
  36                         Element.show("errorBoxShadow");
  37
  38                         if (ext_info) {
  39                                 if (ext_info.responseText) {
  40                                         ext_info = ext_info.responseText;
  41                                 }
  42                         }
  43
  44                         ebc.innerHTML =
  45                                 "<div><b>Error message:</b></div>" +
  46                                 "<pre>" + msg + "</pre>";
  47
  48                         if (ext_info) {
  49                                 ebc.innerHTML += "<div><b>Additional information:</b></div>" +
  50                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  51                         }
  52
  53                         ebc.innerHTML += "<div><b>Stack trace:</b></div>" +
  54                                 "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  55
  56                 } else {
  57                         alert(msg);
  58                 }
  59
  60         } catch (e) {
  61                 alert(msg);
  62
  63         }
  64
  65 }
  66
  67 function format_exception_error(location, e) {
  68         var msg;
  69
  70         if (e.fileName) {
  71                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  72
  73                 msg = "Exception: " + e.name + ", " + e.message +
  74                         "\nFunction: " + location + "()" +
  75                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  76
  77         } else if (e.description) {
  78                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  79         } else {
  80                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  81         }
  82
  83         console.error("EXCEPTION: " + msg);
  84
  85         return msg;
  86 }
  87
  88
  89 function disableHotkeys() {
  90         hotkeys_enabled = false;
  91 }
  92
  93 function enableHotkeys() {
  94         hotkeys_enabled = true;
  95 }
  96
  97 function param_escape(arg) {
  98         if (typeof encodeURIComponent != 'undefined')
  99                 return encodeURIComponent(arg);
 100         else
 101                 return escape(arg);
 102 }
 103
 104 function param_unescape(arg) {
 105         if (typeof decodeURIComponent != 'undefined')
 106                 return decodeURIComponent(arg);
 107         else
 108                 return unescape(arg);
 109 }
 110
 111 function delay(gap) {
 112         var then,now;
 113         then=new Date().getTime();
 114         now=then;
 115         while((now-then)<gap) {
 116                 now=new Date().getTime();
 117         }
 118 }
 119
 120 var notify_hide_timerid = false;
 121
 122 function hide_notify() {
 123         var n = $("notify");
 124         if (n) {
 125                 n.style.display = "none";
 126         }
 127 }
 128
 129 function notify_silent_next() {
 130         notify_silent = true;
 131 }
 132
 133 function notify_real(msg, no_hide, n_type) {
 134
 135         if (notify_silent) {
 136                 notify_silent = false;
 137                 return;
 138         }
 139
 140         var n = $("notify");
 141         var nb = $("notify_body");
 142
 143         if (!n || !nb) return;
 144
 145         if (notify_hide_timerid) {
 146                 window.clearTimeout(notify_hide_timerid);
 147         }
 148
 149         if (msg == "") {
 150                 if (n.style.display == "block") {
 151                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 152                 }
 153                 return;
 154         } else {
 155                 n.style.display = "block";
 156         }
 157
 158         /* types:
 159
 160                 1 - generic
 161                 2 - progress
 162                 3 - error
 163                 4 - info
 164
 165         */
 166
 167         if (typeof __ != 'undefined') {
 168                 msg = __(msg);
 169         }
 170
 171         if (n_type == 1) {
 172                 n.className = "notify";
 173         } else if (n_type == 2) {
 174                 n.className = "notifyProgress";
 175                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 176         } else if (n_type == 3) {
 177                 n.className = "notifyError";
 178                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 179         } else if (n_type == 4) {
 180                 n.className = "notifyInfo";
 181                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 182         }
 183
 184 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 185
 186         nb.innerHTML = msg;
 187
 188         if (!no_hide) {
 189                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 190         }
 191 }
 192
 193 function notify(msg, no_hide) {
 194         notify_real(msg, no_hide, 1);
 195 }
 196
 197 function notify_progress(msg, no_hide) {
 198         notify_real(msg, no_hide, 2);
 199 }
 200
 201 function notify_error(msg, no_hide) {
 202         notify_real(msg, no_hide, 3);
 203
 204 }
 205
 206 function notify_info(msg, no_hide) {
 207         notify_real(msg, no_hide, 4);
 208 }
 209
 210 function printLockingError() {
 211         notify_info("Please wait until operation finishes.");
 212 }
 213
 214 function cleanSelected(element) {
 215         var content = $(element);
 216
 217         for (i = 0; i < content.rows.length; i++) {
 218                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 219         }
 220 }
 221
 222 function getVisibleUnreadHeadlines() {
 223         var content = $("headlinesList");
 224
 225         var rows = new Array();
 226
 227         if (!content) return rows;
 228
 229         for (i = 0; i < content.rows.length; i++) {
 230                 var row_id = content.rows[i].id.replace("RROW-", "");
 231                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 232                                 rows.push(row_id);
 233                 }
 234         }
 235         return rows;
 236 }
 237
 238 function getVisibleHeadlineIds() {
 239
 240         var content = $("headlinesList");
 241
 242         var rows = new Array();
 243
 244         if (!content) return rows;
 245
 246         for (i = 0; i < content.rows.length; i++) {
 247                 var row_id = content.rows[i].id.replace("RROW-", "");
 248                 if (row_id.length > 0) {
 249                                 rows.push(row_id);
 250                 }
 251         }
 252         return rows;
 253 }
 254
 255 function getFirstVisibleHeadlineId() {
 256         if (isCdmMode()) {
 257                 var rows = cdmGetVisibleArticles();
 258                 return rows[0];
 259         } else {
 260                 var rows = getVisibleHeadlineIds();
 261                 return rows[0];
 262         }
 263 }
 264
 265 function getLastVisibleHeadlineId() {
 266         if (isCdmMode()) {
 267                 var rows = cdmGetVisibleArticles();
 268                 return rows[rows.length-1];
 269         } else {
 270                 var rows = getVisibleHeadlineIds();
 271                 return rows[rows.length-1];
 272         }
 273 }
 274
 275 function markHeadline(id) {
 276         var row = $("RROW-" + id);
 277         if (row) {
 278                 var is_active = false;
 279
 280                 if (row.className.match("Active")) {
 281                         is_active = true;
 282                 }
 283                 row.className = row.className.replace("Selected", "");
 284                 row.className = row.className.replace("Active", "");
 285                 row.className = row.className.replace("Insensitive", "");
 286
 287                 if (is_active) {
 288                         row.className = row.className = "Active";
 289                 }
 290
 291                 var check = $("RCHK-" + id);
 292
 293                 if (check) {
 294                         check.checked = true;
 295                 }
 296
 297                 row.className = row.className + "Selected";
 298
 299         }
 300 }
 301
 302 function getFeedIds() {
 303         var content = $("feedsList");
 304
 305         var rows = new Array();
 306
 307         for (i = 0; i < content.rows.length; i++) {
 308                 var id = content.rows[i].id.replace("FEEDR-", "");
 309                 if (id.length > 0) {
 310                         rows.push(id);
 311                 }
 312         }
 313
 314         return rows;
 315 }
 316
 317 function setCookie(name, value, lifetime, path, domain, secure) {
 318
 319         var d = false;
 320
 321         if (lifetime) {
 322                 d = new Date();
 323                 d.setTime(d.getTime() + (lifetime * 1000));
 324         }
 325
 326         console.log("setCookie: " + name + " => " + value + ": " + d);
 327
 328         int_setCookie(name, value, d, path, domain, secure);
 329
 330 }
 331
 332 function int_setCookie(name, value, expires, path, domain, secure) {
 333         document.cookie= name + "=" + escape(value) +
 334                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 335                 ((path) ? "; path=" + path : "") +
 336                 ((domain) ? "; domain=" + domain : "") +
 337                 ((secure) ? "; secure" : "");
 338 }
 339
 340 function delCookie(name, path, domain) {
 341         if (getCookie(name)) {
 342                 document.cookie = name + "=" +
 343                 ((path) ? ";path=" + path : "") +
 344                 ((domain) ? ";domain=" + domain : "" ) +
 345                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 346         }
 347 }
 348
 349
 350 function getCookie(name) {
 351
 352         var dc = document.cookie;
 353         var prefix = name + "=";
 354         var begin = dc.indexOf("; " + prefix);
 355         if (begin == -1) {
 356             begin = dc.indexOf(prefix);
 357             if (begin != 0) return null;
 358         }
 359         else {
 360             begin += 2;
 361         }
 362         var end = document.cookie.indexOf(";", begin);
 363         if (end == -1) {
 364             end = dc.length;
 365         }
 366         return unescape(dc.substring(begin + prefix.length, end));
 367 }
 368
 369 function gotoPreferences() {
 370         document.location.href = "prefs.php";
 371 }
 372
 373 function gotoMain() {
 374         document.location.href = "tt-rss.php";
 375 }
 376
 377 function gotoExportOpml() {
 378         document.location.href = "opml.php?op=Export";
 379 }
 380
 381 function parse_counters(reply, scheduled_call) {
 382         try {
 383
 384                 var feeds_found = 0;
 385
 386                 var elems = JSON.parse(reply.firstChild.nodeValue);
 387
 388                 for (var l = 0; l < elems.length; l++) {
 389
 390                         var id = elems[l].id
 391                         var kind = elems[l].kind;
 392                         var ctr = parseInt(elems[l].counter)
 393                         var error = elems[l].error;
 394                         var has_img = elems[l].has_img;
 395                         var updated = elems[l].updated;
 396                         var title = elems[l].title;
 397                         var xmsg = elems[l].xmsg;
 398
 399                         if (id == "global-unread") {
 400
 401                                 if (ctr > global_unread) {
 402                                         offlineDownloadStart(1);
 403                                 }
 404
 405                                 global_unread = ctr;
 406                                 updateTitle();
 407                                 continue;
 408                         }
 409
 410                         if (id == "subscribed-feeds") {
 411                                 feeds_found = ctr;
 412                                 continue;
 413                         }
 414
 415                         if (kind && kind == "cat") {
 416                                 var catctr = $("FCATCTR-" + id);
 417                                 if (catctr) {
 418                                         catctr.innerHTML = "(" + ctr + ")";
 419                                         if (ctr > 0) {
 420                                                 catctr.className = "catCtrHasUnread";
 421                                         } else {
 422                                                 catctr.className = "catCtrNoUnread";
 423                                         }
 424                                 }
 425                                 continue;
 426                         }
 427
 428                         var feedctr = $("FEEDCTR-" + id);
 429                         var feedu = $("FEEDU-" + id);
 430                         var feedr = $("FEEDR-" + id);
 431                         var feed_img = $("FIMG-" + id);
 432                         var feedlink = $("FEEDL-" + id);
 433                         var feedupd = $("FLUPD-" + id);
 434
 435                         if (updated && feedlink) {
 436                                 if (error) {
 437                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 438                                 } else {
 439                                         feedlink.title = "Updated: " + updated;
 440                                 }
 441                         }
 442
 443                         if (feedupd) {
 444                                 if (!updated) updated = "";
 445
 446                                 if (error) {
 447                                         if (xmsg) {
 448                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 449                                         } else {
 450                                                 feedupd.innerHTML = updated + " (Error)";
 451                                         }
 452                                 } else {
 453                                         if (xmsg) {
 454                                                 feedupd.innerHTML = updated + " " + xmsg;
 455                                         } else {
 456                                                 feedupd.innerHTML = updated;
 457                                         }
 458                                 }
 459                         }
 460
 461                         if (has_img && feed_img) {
 462                                 if (!feed_img.src.match(id + ".ico")) {
 463                                         feed_img.src = getInitParam("icons_url") + "/" + id + ".ico";
 464                                 }
 465                         }
 466
 467                         if (feedlink && title) {
 468                                 feedlink.innerHTML = title;
 469                         }
 470
 471                         if (feedctr && feedu && feedr) {
 472
 473                                 if (parseInt(ctr) > 0 &&
 474                                                 parseInt(feedu.innerHTML) < parseInt(ctr) &&
 475                                                 id == getActiveFeedId() && scheduled_call) {
 476
 477                                         displayNewContentPrompt(id);
 478                                 }
 479
 480                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 481
 482                                 feedu.innerHTML = ctr;
 483
 484                                 if (error) {
 485                                         feedr.className = feedr.className.replace("feed", "error");
 486                                 } else if (id > 0) {
 487                                         feedr.className = feedr.className.replace("error", "feed");
 488                                 }
 489
 490                                 if (ctr > 0) {
 491                                         feedctr.className = "feedCtrHasUnread";
 492                                         if (!feedr.className.match("Unread")) {
 493                                                 var is_selected = feedr.className.match("Selected");
 494
 495                                                 feedr.className = feedr.className.replace("Selected", "");
 496                                                 feedr.className = feedr.className.replace("Unread", "");
 497
 498                                                 feedr.className = feedr.className + "Unread";
 499
 500                                                 if (is_selected) {
 501                                                         feedr.className = feedr.className + "Selected";
 502                                                 }
 503
 504                                         }
 505
 506                                         if (row_needs_hl &&
 507                                                         !getInitParam("theme_options").match('no_highlights')) {
 508                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 509                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 510
 511                                                 cache_invalidate("F:" + id);
 512                                         }
 513                                 } else {
 514                                         feedctr.className = "feedCtrNoUnread";
 515                                         feedr.className = feedr.className.replace("Unread", "");
 516                                 }
 517                         }
 518                 }
 519
 520                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 521
 522                 var feeds_stored = number_of_feeds;
 523
 524                 console.log("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 525
 526                 if (feeds_stored != feeds_found) {
 527                         number_of_feeds = feeds_found;
 528
 529                         if (feeds_stored != 0 && feeds_found != 0) {
 530                                 console.log("Subscribed feed number changed, refreshing feedlist");
 531                                 setTimeout('updateFeedList(false, false)', 50);
 532                         }
 533                 } else {
 534 /*                      var fl = $("feeds-frame").innerHTML;
 535                         if (fl) {
 536                                 cache_invalidate("FEEDLIST");
 537                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 538                         } */
 539                 }
 540
 541         } catch (e) {
 542                 exception_error("parse_counters", e);
 543         }
 544 }
 545
 546 function parse_counters_reply(transport, scheduled_call) {
 547
 548         if (!transport.responseXML) {
 549                 notify_error("Backend did not return valid XML", true);
 550                 return;
 551         }
 552
 553         var reply = transport.responseXML.firstChild;
 554
 555         if (!reply) {
 556                 notify_error("Backend did not return expected XML object", true);
 557                 updateTitle("");
 558                 return;
 559         }
 560
 561         if (!transport_error_check(transport)) return;
 562
 563         var counters = reply.getElementsByTagName("counters")[0];
 564
 565         if (counters)
 566                 parse_counters(counters, scheduled_call);
 567
 568         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 569
 570         if (runtime_info)
 571                 parse_runtime_info(runtime_info);
 572
 573         if (feedsSortByUnread()) {
 574                 resort_feedlist();
 575         }
 576
 577         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 578
 579 }
 580
 581 function all_counters_callback2(transport, async_call) {
 582         try {
 583                 if (async_call) async_counters_work = true;
 584                 if (offline_mode) return;
 585
 586                 parse_counters_reply(transport);
 587
 588         } catch (e) {
 589                 exception_error("all_counters_callback2", e, transport);
 590         }
 591 }
 592
 593 function get_feed_unread(id) {
 594         try {
 595                 return parseInt($("FEEDU-" + id).innerHTML);
 596         } catch (e) {
 597                 return -1;
 598         }
 599 }
 600
 601 function get_cat_unread(id) {
 602         try {
 603                 var ctr = $("FCATCTR-" + id).innerHTML;
 604                 ctr = ctr.replace("(", "");
 605                 ctr = ctr.replace(")", "");
 606                 return parseInt(ctr);
 607         } catch (e) {
 608                 return -1;
 609         }
 610 }
 611
 612 function get_feed_entry_unread(elem) {
 613
 614         var id = elem.id.replace("FEEDR-", "");
 615
 616         if (id <= 0) {
 617                 return -1;
 618         }
 619
 620         try {
 621                 return parseInt($("FEEDU-" + id).innerHTML);
 622         } catch (e) {
 623                 return -1;
 624         }
 625 }
 626
 627 function get_feed_entry_name(elem) {
 628         var id = elem.id.replace("FEEDR-", "");
 629         return getFeedName(id);
 630 }
 631
 632
 633 function resort_category(node, cat_mode) {
 634
 635         try {
 636
 637                 console.log("resort_category: " + node + " CM=" + cat_mode);
 638
 639                 var by_unread = feedsSortByUnread();
 640
 641                 var list = node.getElementsByTagName("LI");
 642
 643                 for (i = 0; i < list.length; i++) {
 644
 645                         for (j = i+1; j < list.length; j++) {
 646
 647                                 var tmp_val = get_feed_entry_unread(list[i]);
 648                                 var cur_val = get_feed_entry_unread(list[j]);
 649
 650                                 var tmp_name = get_feed_entry_name(list[i]);
 651                                 var cur_name = get_feed_entry_name(list[j]);
 652
 653                                 var valid_pair = cat_mode || (list[i].id.match(/FEEDR-[0-9]/) &&
 654                                                 list[j].id.match(/FEEDR-[0-9]/));
 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                         notify('');
1304
1305                         var result = transport.responseXML.getElementsByTagName('result')[0];
1306                         var rc = parseInt(result.getAttribute('code'));
1307
1308                         Form.enable("feed_add_form");
1309
1310                         switch (rc) {
1311                         case 1:
1312                                 closeInfoBox();
1313                                 notify_info(__("Subscribed to %s").replace("%s", feed_url));
1314
1315                                 if (inPreferences()) {
1316                                         updateFeedList();
1317                                 } else {
1318                                         setTimeout('updateFeedList(false, false)', 50);
1319                                 }
1320                                 break;
1321                         case 2:
1322                                 alert(__("Can't subscribe to the specified URL."));
1323                                 break;
1324                         case 0:
1325                                 alert(__("You are already subscribed to this feed."));
1326                                 break;
1327                         }
1328
1329                 } });
1330
1331         } catch (e) {
1332                 exception_error("subscribeToFeed", e);
1333         }
1334
1335         return false;
1336 }
1337
1338 function filterCR(e, f)
1339 {
1340      var key;
1341
1342      if(window.event)
1343           key = window.event.keyCode;     //IE
1344      else
1345           key = e.which;     //firefox
1346
1347         if (key == 13) {
1348                 if (typeof f != 'undefined') {
1349                         f();
1350                         return false;
1351                 } else {
1352                         return false;
1353                 }
1354         } else {
1355                 return true;
1356         }
1357 }
1358
1359 function getInitParam(key) {
1360         return init_params[key];
1361 }
1362
1363 function setInitParam(key, value) {
1364         init_params[key] = value;
1365 }
1366
1367 function fatalError(code, msg, ext_info) {
1368         try {
1369
1370                 if (!ext_info) ext_info = "N/A";
1371
1372                 if (code == 6) {
1373                         window.location.href = "tt-rss.php";
1374                 } else if (code == 5) {
1375                         window.location.href = "update.php";
1376                 } else {
1377
1378                         if (msg == "") msg = "Unknown error";
1379
1380                         var ebc = $("xebContent");
1381
1382                         if (ebc) {
1383
1384                                 Element.show("dialog_overlay");
1385                                 Element.show("errorBoxShadow");
1386                                 Element.hide("xebBtn");
1387
1388                                 if (ext_info) {
1389                                         if (ext_info.responseText) {
1390                                                 ext_info = ext_info.responseText;
1391                                         }
1392                                 }
1393
1394                                 ebc.innerHTML =
1395                                         "<div><b>Error message:</b></div>" +
1396                                         "<pre>" + msg + "</pre>" +
1397                                         "<div><b>Additional information:</b></div>" +
1398                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1399                         }
1400                 }
1401
1402         } catch (e) {
1403                 exception_error("fatalError", e);
1404         }
1405 }
1406
1407 function getFeedName(id, is_cat) {
1408         var e;
1409
1410         if (is_cat) {
1411                 e = $("FCATN-" + id);
1412         } else {
1413                 e = $("FEEDN-" + id);
1414         }
1415         if (e) {
1416                 return e.innerHTML.stripTags();
1417         } else {
1418                 return null;
1419         }
1420 }
1421
1422 function filterDlgCheckType(sender) {
1423
1424         try {
1425
1426                 var ftype = sender[sender.selectedIndex].value;
1427
1428                 var form = document.forms["filter_add_form"];
1429
1430                 if (!form) {
1431                         form = document.forms["filter_edit_form"];
1432                 }
1433
1434                 if (!form) {
1435                         console.log("filterDlgCheckType: can't find form!");
1436                         return;
1437                 }
1438
1439                 // if selected filter type is 5 (Date) enable the modifier dropbox
1440                 if (ftype == 5) {
1441                         Element.show("filter_dlg_date_mod_box");
1442                         Element.show("filter_dlg_date_chk_box");
1443                 } else {
1444                         Element.hide("filter_dlg_date_mod_box");
1445                         Element.hide("filter_dlg_date_chk_box");
1446
1447                 }
1448
1449         } catch (e) {
1450                 exception_error("filterDlgCheckType", e);
1451         }
1452
1453 }
1454
1455 function filterDlgCheckAction(sender) {
1456
1457         try {
1458
1459                 var action = sender[sender.selectedIndex].value;
1460
1461                 var form = document.forms["filter_add_form"];
1462
1463                 if (!form) {
1464                         form = document.forms["filter_edit_form"];
1465                 }
1466
1467                 if (!form) {
1468                         console.log("filterDlgCheckAction: can't find form!");
1469                         return;
1470                 }
1471
1472                 var action_param = $("filter_dlg_param_box");
1473
1474                 if (!action_param) {
1475                         console.log("filterDlgCheckAction: can't find action param box!");
1476                         return;
1477                 }
1478
1479                 // if selected action supports parameters, enable params field
1480                 if (action == 4 || action == 6 || action == 7) {
1481                         Element.show(action_param);
1482                         if (action != 7) {
1483                                 Element.show(form.action_param);
1484                                 Element.hide(form.action_param_label);
1485                         } else {
1486                                 Element.show(form.action_param_label);
1487                                 Element.hide(form.action_param);
1488                         }
1489                 } else {
1490                         Element.hide(action_param);
1491                 }
1492
1493         } catch (e) {
1494                 exception_error("filterDlgCheckAction", e);
1495         }
1496
1497 }
1498
1499 function filterDlgCheckDate() {
1500         try {
1501                 var form = document.forms["filter_add_form"];
1502
1503                 if (!form) {
1504                         form = document.forms["filter_edit_form"];
1505                 }
1506
1507                 if (!form) {
1508                         console.log("filterDlgCheckAction: can't find form!");
1509                         return;
1510                 }
1511
1512                 var reg_exp = form.reg_exp.value;
1513
1514                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
1515
1516                 new Ajax.Request("backend.php", {
1517                         parameters: query,
1518                         onComplete: function(transport) {
1519
1520                                 var form = document.forms["filter_add_form"];
1521
1522                                 if (!form) {
1523                                         form = document.forms["filter_edit_form"];
1524                                 }
1525
1526                                 if (transport.responseXML) {
1527                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1528
1529                                         if (result && result.firstChild) {
1530                                                 if (result.firstChild.nodeValue == "1") {
1531
1532                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1533
1534                                                         return;
1535                                                 }
1536                                         }
1537                                 }
1538
1539                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1540
1541                         } });
1542
1543
1544         } catch (e) {
1545                 exception_error("filterDlgCheckDate", e);
1546         }
1547 }
1548
1549 function explainError(code) {
1550         return displayDlg("explainError", code);
1551 }
1552
1553 // this only searches loaded headlines list, not in CDM
1554 function getRelativePostIds(id, limit) {
1555
1556         if (!limit) limit = 3;
1557
1558         console.log("getRelativePostIds: " + id + " limit=" + limit);
1559
1560         var ids = new Array();
1561         var container = $("headlinesList");
1562
1563         if (container) {
1564                 var rows = container.rows;
1565
1566                 for (var i = 0; i < rows.length; i++) {
1567                         var r_id = rows[i].id.replace("RROW-", "");
1568
1569                         if (r_id == id) {
1570                                 for (var k = 1; k <= limit; k++) {
1571                                         var nid = false;
1572
1573                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1574                                         if (nid) ids.push(nid);
1575
1576                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1577                                         if (nid) ids.push(nid);
1578                                 }
1579
1580                                 return ids;
1581                         }
1582                 }
1583         }
1584
1585         return false;
1586 }
1587
1588 function openArticleInNewWindow(id) {
1589         try {
1590                 console.log("openArticleInNewWindow: " + id);
1591
1592                 var query = "?op=rpc&subop=getArticleLink&id=" + id;
1593                 var wname = "ttrss_article_" + id;
1594
1595                 console.log(query + " " + wname);
1596
1597                 var w = window.open("", wname);
1598
1599                 if (!w) notify_error("Failed to open window for the article");
1600
1601                 new Ajax.Request("backend.php", {
1602                         parameters: query,
1603                         onComplete: function(transport) {
1604
1605                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1606                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1607
1608                                         console.log("open_article received link: " + link);
1609
1610                                         if (link && id) {
1611
1612                                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
1613
1614                                                 console.log("link url: " + link.firstChild.nodeValue + ", wname " + wname);
1615
1616                                                 var w = window.open(link.firstChild.nodeValue, wname);
1617
1618                                                 if (!w) { notify_error("Failed to load article in new window"); }
1619
1620                                                 if (id) {
1621                                                         id = id.firstChild.nodeValue;
1622                                                         if (!$("headlinesList")) {
1623                                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
1624                                                         }
1625                                                 }
1626                                         } else {
1627                                                 notify_error("Can't open article: received invalid article link");
1628                                         }
1629                                 } });
1630
1631         } catch (e) {
1632                 exception_error("openArticleInNewWindow", e);
1633         }
1634 }
1635
1636 /* http://textsnippets.com/posts/show/835 */
1637
1638 Position.GetWindowSize = function(w) {
1639         w = w ? w : window;
1640         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1641         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1642         return [width, height]
1643 }
1644
1645 /* http://textsnippets.com/posts/show/836 */
1646
1647 Position.Center = function(element, parent) {
1648         var w, h, pw, ph;
1649         var d = Element.getDimensions(element);
1650         w = d.width;
1651         h = d.height;
1652         Position.prepare();
1653         if (!parent) {
1654                 var ws = Position.GetWindowSize();
1655                 pw = ws[0];
1656                 ph = ws[1];
1657         } else {
1658                 pw = parent.offsetWidth;
1659                 ph = parent.offsetHeight;
1660         }
1661         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1662         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1663 }
1664
1665
1666 function isCdmMode() {
1667         return !$("headlinesList");
1668 }
1669
1670 function getSelectedArticleIds2() {
1671         var rows = new Array();
1672         var cdm_mode = isCdmMode();
1673
1674         if (cdm_mode) {
1675                 rows = cdmGetSelectedArticles();
1676         } else {
1677                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1678         }
1679
1680         var ids = new Array();
1681
1682         for (var i = 0; i < rows.length; i++) {
1683                 var chk = $("RCHK-" + rows[i]);
1684                 if (chk && chk.checked) {
1685                         ids.push(rows[i]);
1686                 }
1687         }
1688
1689         return ids;
1690 }
1691
1692 function displayHelpInfobox(topic_id) {
1693
1694         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1695
1696         var w = window.open(url, "ttrss_help",
1697                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1698
1699 }
1700
1701 function loading_set_progress(p) {
1702         try {
1703                 if (p < last_progress_point || !Element.visible("overlay")) return;
1704
1705                 console.log("loading_set_progress : " + p + " (" + last_progress_point + ")");
1706
1707                 var o = $("l_progress_i");
1708
1709 //              o.style.width = (p * 2) + "px";
1710
1711                 new Effect.Scale(o, p, {
1712                         scaleY : false,
1713                         scaleFrom : last_progress_point,
1714                         scaleMode: { originalWidth : 200 },
1715                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1716
1717                 last_progress_point = p;
1718
1719         } catch (e) {
1720                 exception_error("loading_set_progress", e);
1721         }
1722 }
1723
1724 function remove_splash() {
1725         if (Element.visible("overlay")) {
1726                 console.log("about to remove splash, OMG!");
1727                 Element.hide("overlay");
1728                 console.log("removed splash!");
1729         }
1730 }
1731
1732 function getSelectedFeedsFromBrowser() {
1733
1734         var list = $("browseFeedList");
1735
1736         var selected = new Array();
1737
1738         for (i = 0; i < list.childNodes.length; i++) {
1739                 var child = list.childNodes[i];
1740                 if (child.id && child.id.match("FBROW-")) {
1741                         var id = child.id.replace("FBROW-", "");
1742
1743                         var cb = $("FBCHK-" + id);
1744
1745                         if (cb.checked) {
1746                                 selected.push(id);
1747                         }
1748                 }
1749         }
1750
1751         return selected;
1752 }
1753
1754 function updateFeedBrowser() {
1755         try {
1756
1757                 var query = Form.serialize("feed_browser");
1758
1759                 Element.show('feed_browser_spinner');
1760
1761                 new Ajax.Request("backend.php", {
1762                         parameters: query,
1763                         onComplete: function(transport) {
1764                                 notify('');
1765
1766                                 Element.hide('feed_browser_spinner');
1767
1768                                 var c = $("browseFeedList");
1769                                 var r = transport.responseXML.getElementsByTagName("content")[0];
1770                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
1771                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
1772
1773                                 if (c && r) {
1774                                         c.innerHTML = r.firstChild.nodeValue;
1775                                 }
1776
1777                                 if (parseInt(mode.getAttribute("value")) == 2) {
1778                                         Element.show('feed_archive_remove');
1779                                 } else {
1780                                         Element.hide('feed_archive_remove');
1781                                 }
1782
1783                         } });
1784
1785         } catch (e) {
1786                 exception_error("updateFeedBrowser", e);
1787         }
1788
1789 }
1790
1791 function transport_error_check(transport) {
1792         try {
1793                 if (transport.responseXML) {
1794                         var error = transport.responseXML.getElementsByTagName("error")[0];
1795
1796                         if (error) {
1797                                 var code = error.getAttribute("error-code");
1798                                 var msg = error.getAttribute("error-msg");
1799                                 if (code != 0) {
1800                                         fatalError(code, msg);
1801                                         return false;
1802                                 }
1803                         }
1804                 }
1805         } catch (e) {
1806                 exception_error("check_for_error_xml", e);
1807         }
1808         return true;
1809 }
1810
1811 function strip_tags(s) {
1812         return s.replace(/<\/?[^>]+(>|$)/g, "");
1813 }
1814
1815 function truncate_string(s, length) {
1816         if (!length) length = 30;
1817         var tmp = s.substring(0, length);
1818         if (s.length > length) tmp += "&hellip;";
1819         return tmp;
1820 }
1821
1822 function hotkey_prefix_timeout() {
1823         try {
1824
1825                 var date = new Date();
1826                 var ts = Math.round(date.getTime() / 1000);
1827
1828                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
1829                         console.log("hotkey_prefix seems to be stuck, aborting");
1830                         hotkey_prefix_pressed = false;
1831                         hotkey_prefix = false;
1832                         Element.hide('cmdline');
1833                 }
1834
1835                 setTimeout("hotkey_prefix_timeout()", 1000);
1836
1837         } catch  (e) {
1838                 exception_error("hotkey_prefix_timeout", e);
1839         }
1840 }
1841
1842 function hideAuxDlg() {
1843         try {
1844                 Element.hide('auxDlg');
1845         } catch (e) {
1846                 exception_error("hideAuxDlg", e);
1847         }
1848 }
1849
1850 function displayNewContentPrompt(id) {
1851         try {
1852
1853                 var msg = "<a href='#' onclick='viewfeed("+id+")'>" +
1854                         __("New articles available in this feed (click to show)") + "</a>";
1855
1856                 msg = msg.replace("%s", getFeedName(id));
1857
1858                 $('auxDlg').innerHTML = msg;
1859
1860                 new Effect.Appear('auxDlg', {duration : 0.5});
1861
1862         } catch (e) {
1863                 exception_error("displayNewContentPrompt", e);
1864         }
1865 }
1866
1867 function feedBrowserSubscribe() {
1868         try {
1869
1870                 var selected = getSelectedFeedsFromBrowser();
1871
1872                 var mode = document.forms['feed_browser'].mode;
1873
1874                 mode = mode[mode.selectedIndex].value;
1875
1876                 if (selected.length > 0) {
1877                         closeInfoBox();
1878
1879                         notify_progress("Loading, please wait...", true);
1880
1881                         var query = "?op=rpc&subop=massSubscribe&ids="+
1882                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1883
1884                         new Ajax.Request("backend.php", {
1885                                 parameters: query,
1886                                 onComplete: function(transport) {
1887
1888                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1889                                         var nf_value = nf.getAttribute("value");
1890
1891                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1892
1893                                         if (inPreferences()) {
1894                                                 updateFeedList();
1895                                         } else {
1896                                                 setTimeout('updateFeedList(false, false)', 50);
1897                                         }
1898                                 } });
1899
1900                 } else {
1901                         alert(__("No feeds are selected."));
1902                 }
1903
1904         } catch (e) {
1905                 exception_error("feedBrowserSubscribe", e);
1906         }
1907 }
1908
1909 function feedArchiveRemove() {
1910         try {
1911
1912                 var selected = getSelectedFeedsFromBrowser();
1913
1914                 if (selected.length > 0) {
1915
1916                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1917
1918                         if (confirm(pr)) {
1919                                 Element.show('feed_browser_spinner');
1920
1921                                 var query = "?op=rpc&subop=remarchived&ids=" +
1922                                         param_escape(selected.toString());;
1923
1924                                 new Ajax.Request("backend.php", {
1925                                         parameters: query,
1926                                         onComplete: function(transport) {
1927                                                 updateFeedBrowser();
1928                                         } });
1929                         }
1930
1931                 } else {
1932                         alert(__("No feeds are selected."));
1933                 }
1934
1935         } catch (e) {
1936                 exception_error("feedArchiveRemove", e);
1937         }
1938 }
1939
1940 function uploadIconHandler(rc) {
1941         try {
1942                 switch (rc) {
1943                         case 0:
1944                                 notify_info("Upload complete.");
1945                                 if (inPreferences()) {
1946                                         updateFeedList();
1947                                 } else {
1948                                         setTimeout('updateFeedList(false, false)', 50);
1949                                 }
1950                                 break;
1951                         case 1:
1952                                 notify_error("Upload failed: icon is too big.");
1953                                 break;
1954                         case 2:
1955                                 notify_error("Upload failed.");
1956                                 break;
1957                 }
1958
1959         } catch (e) {
1960                 exception_error("uploadIconHandler", e);
1961         }
1962 }
1963
1964 function removeFeedIcon(id) {
1965
1966         try {
1967
1968                 if (confirm(__("Remove stored feed icon?"))) {
1969                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
1970
1971                         console.log(query);
1972
1973                         notify_progress("Removing feed icon...", true);
1974
1975                         new Ajax.Request("backend.php", {
1976                                 parameters: query,
1977                                 onComplete: function(transport) {
1978                                         notify_info("Feed icon removed.");
1979                                         if (inPreferences()) {
1980                                                 updateFeedList();
1981                                         } else {
1982                                                 setTimeout('updateFeedList(false, false)', 50);
1983                                         }
1984                                 } });
1985                 }
1986
1987                 return false;
1988         } catch (e) {
1989                 exception_error("uploadFeedIcon", e);
1990         }
1991 }
1992
1993 function uploadFeedIcon() {
1994
1995         try {
1996
1997                 var file = $("icon_file");
1998
1999                 if (file.value.length == 0) {
2000                         alert(__("Please select an image file to upload."));
2001                 } else {
2002                         if (confirm(__("Upload new icon for this feed?"))) {
2003                                 notify_progress("Uploading, please wait...", true);
2004                                 return true;
2005                         }
2006                 }
2007
2008                 return false;
2009
2010         } catch (e) {
2011                 exception_error("uploadFeedIcon", e);
2012         }
2013 }
2014
2015 function addLabel() {
2016
2017         try {
2018
2019                 var caption = prompt(__("Please enter label caption:"), "");
2020
2021                 if (caption != undefined) {
2022
2023                         if (caption == "") {
2024                                 alert(__("Can't create label: missing caption."));
2025                                 return false;
2026                         }
2027
2028                         var query = "?op=pref-labels&subop=add&caption=" +
2029                                 param_escape(caption);
2030
2031                         notify_progress("Loading, please wait...", true);
2032
2033                         if (inPreferences()) active_tab = "labelConfig";
2034
2035                         new Ajax.Request("backend.php", {
2036                                 parameters: query,
2037                                 onComplete: function(transport) {
2038                                         if (inPreferences()) {
2039                                                 infobox_submit_callback2(transport);
2040                                         } else {
2041                                                 updateFeedList();
2042                                         }
2043                         } });
2044
2045                 }
2046
2047         } catch (e) {
2048                 exception_error("addLabel", e);
2049         }
2050 }
2051
2052 function quickAddFeed() {
2053         displayDlg('quickAddFeed', '',
2054            function () {$('feed_url').focus();});
2055 }
2056
2057 function quickAddFilter() {
2058         displayDlg('quickAddFilter', '',
2059            function () {document.forms['filter_add_form'].reg_exp.focus();});
2060 }
2061
2062 function unsubscribeFeed(feed_id, title) {
2063
2064         var msg = __("Unsubscribe from %s?").replace("%s", title);
2065
2066         if (title == undefined || confirm(msg)) {
2067                 notify_progress("Removing feed...");
2068
2069                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
2070
2071                 new Ajax.Request("backend.php", {
2072                         parameters: query,
2073                         onComplete: function(transport) {
2074
2075                                         closeInfoBox();
2076
2077                                         if (inPreferences()) {
2078                                                 updateFeedList();
2079                                         } else {
2080                                                 dlg_frefresh_callback(transport, feed_id);
2081                                         }
2082
2083                                 } });
2084         }
2085
2086         return false;
2087 }
2088
2089
2090 function backend_sanity_check_callback(transport) {
2091
2092         try {
2093
2094                 if (sanity_check_done) {
2095                         fatalError(11, "Sanity check request received twice. This can indicate "+
2096                       "presence of Firebug or some other disrupting extension. "+
2097                                 "Please disable it and try again.");
2098                         return;
2099                 }
2100
2101                 if (!transport.responseXML) {
2102                         if (!store) {
2103                                 fatalError(3, "Sanity check: Received reply is not XML",
2104                                         transport.responseText);
2105                                 return;
2106                         } else {
2107                                 init_offline();
2108                                 return;
2109                         }
2110                 }
2111
2112                 if (getURLParam("offline")) {
2113                         return init_offline();
2114                 }
2115
2116                 var reply = transport.responseXML.getElementsByTagName("error")[0];
2117
2118                 if (!reply) {
2119                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
2120                         return;
2121                 }
2122
2123                 var error_code = reply.getAttribute("error-code");
2124
2125                 if (error_code && error_code != 0) {
2126                         return fatalError(error_code, reply.getAttribute("error-msg"));
2127                 }
2128
2129                 console.log("sanity check ok");
2130
2131                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
2132
2133                 if (params) {
2134                         console.log('reading init-params...');
2135
2136                         params = JSON.parse(params.firstChild.nodeValue);
2137
2138                         if (params) {
2139                                 for (var i = 0; i < params.length; i++) {
2140
2141                                         var k = params[i].param;
2142                                         var v = params[i].value;
2143
2144                                         if (getURLParam('debug')) console.log(k + " => " + v);
2145                                         init_params[k] = v;
2146
2147                                         if (db) {
2148                                                 db.execute("DELETE FROM init_params WHERE key = ?", [k]);
2149                                                 db.execute("INSERT INTO init_params (key,value) VALUES (?, ?)",
2150                                                         [k, v]);
2151                                         }
2152                                 }
2153                         }
2154                 }
2155
2156                 sanity_check_done = true;
2157
2158                 init_second_stage();
2159
2160         } catch (e) {
2161                 exception_error("backend_sanity_check_callback", e, transport);
2162         }
2163 }
2164
2165 function has_local_storage() {
2166         try {
2167                 return 'localStorage' in window && window['localStorage'] != null;
2168         } catch (e) {
2169                 return false;
2170         }
2171 }
2172
2173 function catSelectOnChange(elem) {
2174         try {
2175                 var value = elem[elem.selectedIndex].value;
2176                 var def = elem.getAttribute('default');
2177
2178                 if (value == "ADD_CAT") {
2179
2180                         if (def)
2181                                 dropboxSelect(elem, def);
2182                         else
2183                                 elem.selectedIndex = 0;
2184
2185                         quickAddCat(elem);
2186                 }
2187
2188         } catch (e) {
2189                 exception_error("catSelectOnChange", e);
2190         }
2191 }
2192
2193 function quickAddCat(select) {
2194         try {
2195                 var cat = prompt(__("Please enter category title:"));
2196
2197                 if (cat) {
2198
2199                         var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
2200
2201                         new Ajax.Request("backend.php", {
2202                                 parameters: query,
2203                                 onComplete: function (transport) {
2204                                         var response = transport.responseXML;
2205
2206                                         var payload = response.getElementsByTagName("payload")[0];
2207
2208                                         if (payload)
2209                                                 select.innerHTML = payload.firstChild.nodeValue;
2210
2211                         } });
2212
2213                 }
2214
2215         } catch (e) {
2216                 exception_error("quickAddCat", e);
2217         }
2218 }
2219
2220 function genUrlChangeKey(feed, is_cat) {
2221
2222         try {
2223                 var ok = confirm(__("Generate new syndication address for this feed?"));
2224
2225                 if (ok) {
2226
2227                         notify_progress("Trying to change address...", true);
2228
2229                         var query = "?op=rpc&subop=regenFeedKey&id=" + param_escape(feed) +
2230                                 "&is_cat=" + param_escape(is_cat);
2231
2232                         new Ajax.Request("backend.php", {
2233                                 parameters: query,
2234                                 onComplete: function(transport) {
2235                                                 var new_link = transport.responseXML.getElementsByTagName("link")[0];
2236
2237                                                 var e = $('gen_feed_url');
2238
2239                                                 if (new_link) {
2240
2241                                                         new_link = new_link.firstChild.nodeValue;
2242
2243                                                         e.innerHTML = e.innerHTML.replace(/\&amp;key=.*$/,
2244                                                                 "&amp;key=" + new_link);
2245
2246                                                         e.href = e.href.replace(/\&amp;key=.*$/,
2247                                                                 "&amp;key=" + new_link);
2248
2249                                                         new Effect.Highlight(e);
2250
2251                                                         notify('');
2252
2253                                                 } else {
2254                                                         notify_error("Could not change feed URL.");
2255                                                 }
2256                                 } });
2257                 }
2258         } catch (e) {
2259                 exception_error("genUrlChangeKey", e);
2260         }
2261         return false;
2262 }
2263