functions.js

   1 var hotkeys_enabled = true;
   2
   3 function browser_has_opacity() {
   4         return navigator.userAgent.match("Gecko") || navigator.userAgent.match("Opera");
   5 }
   6
   7 function exception_error(location, e) {
   8         var msg;
   9
  10         if (e.fileName) {
  11                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  12
  13                 msg = "Exception: " + e.name + ", " + e.message +
  14                         "\nFunction: " + location + "()" +
  15                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  16         } else {
  17                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  18         }
  19
  20         alert(msg);
  21 }
  22
  23 function disableHotkeys() {
  24         hotkeys_enabled = false;
  25 }
  26
  27 function enableHotkeys() {
  28         hotkeys_enabled = true;
  29 }
  30
  31 function xmlhttp_ready(obj) {
  32         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  33 }
  34
  35 function notify_callback() {
  36         var container = document.getElementById('notify');
  37         if (xmlhttp.readyState == 4) {
  38                 container.innerHTML=xmlhttp.responseText;
  39         }
  40 }
  41
  42 function rpc_notify_callback() {
  43         var container = document.getElementById('notify');
  44         if (xmlhttp_rpc.readyState == 4) {
  45                 container.innerHTML=xmlhttp_rpc.responseText;
  46         }
  47 }
  48
  49 function rpc_pnotify_callback() {
  50         var container = parent.document.getElementById('notify');
  51         if (xmlhttp_rpc.readyState == 4) {
  52                 container.innerHTML=xmlhttp_rpc.responseText;
  53         }
  54 }
  55
  56 function param_escape(arg) {
  57         if (typeof encodeURIComponent != 'undefined')
  58                 return encodeURIComponent(arg);
  59         else
  60                 return escape(arg);
  61 }
  62
  63 function param_unescape(arg) {
  64         if (typeof decodeURIComponent != 'undefined')
  65                 return decodeURIComponent(arg);
  66         else
  67                 return unescape(arg);
  68 }
  69
  70 function delay(gap) {
  71         var then,now;
  72         then=new Date().getTime();
  73         now=then;
  74         while((now-then)<gap) {
  75                 now=new Date().getTime();
  76         }
  77 }
  78
  79 var notify_hide_timerid = false;
  80 var notify_last_doc = false;
  81
  82 function hide_notify() {
  83         if (notify_last_doc) {
  84                 var n = notify_last_doc.getElementById("notify");
  85                 if (browser_has_opacity()) {
  86                         if (notify_opacity >= 0) {
  87                                 notify_opacity = notify_opacity - 0.2;
  88                                 n.style.opacity = notify_opacity;
  89                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
  90                         } else {
  91                                 n.style.display = "none";
  92                                 n.style.opacity = 1;
  93                         }
  94                 } else {
  95                         n.style.display = "none";
  96                 }
  97         }
  98 }
  99
 100 function notify_real(msg, doc, no_hide, is_err) {
 101
 102         var n = doc.getElementById("notify");
 103         var nb = doc.getElementById("notify_body");
 104
 105         if (!n || !nb) return;
 106
 107         if (msg == "") {
 108                 n.style.display = "none";
 109         } else {
 110                 n.style.display = "block";
 111         }
 112
 113         if (is_err) {
 114                 n.style.backgroundColor = "#ffaaaa";
 115                 n.style.color = "white";
 116                 n.style.borderColor = "#ff0000";
 117         } else {
 118                 n.style.backgroundColor = "#fff7d5";
 119                 n.style.borderColor = "#d7c47a";
 120                 n.style.color = "black";
 121         }
 122
 123         nb.innerHTML = msg;
 124
 125         if (notify_hide_timerid) {
 126                 window.clearTimeout(notify_hide_timerid);
 127         }
 128
 129         notify_last_doc = doc;
 130         notify_opacity = 1;
 131
 132         if (!no_hide) {
 133                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 134         }
 135 }
 136
 137 function p_notify(msg, no_hide, is_err) {
 138         notify_real(msg, parent.document, no_hide, is_err);
 139 }
 140
 141 function notify(msg, no_hide, is_err) {
 142         notify_real(msg, document, no_hide, is_err);
 143 }
 144
 145 function printLockingError() {
 146         notify("Please wait until operation finishes");}
 147
 148 var seq = "";
 149
 150 function hotkey_handler(e) {
 151
 152         var keycode;
 153
 154         if (!hotkeys_enabled) return;
 155
 156         if (window.event) {
 157                 keycode = window.event.keyCode;
 158         } else if (e) {
 159                 keycode = e.which;
 160         }
 161
 162         if (keycode == 13 || keycode == 27) {
 163                 seq = "";
 164         } else {
 165                 seq = seq + "" + keycode;
 166         }
 167
 168         if (document.getElementById("piggie")) {
 169
 170                 if (seq.match("807371717369")) {
 171                         seq = "";
 172                         localPiggieFunction(true);
 173                 } else {
 174                         localPiggieFunction(false);
 175                 }
 176         }
 177
 178         if (typeof localHotkeyHandler != 'undefined') {
 179                 try {
 180                         localHotkeyHandler(keycode);
 181                 } catch (e) {
 182                         exception_error("hotkey_handler", e);
 183                 }
 184         }
 185
 186 }
 187
 188 function cleanSelectedList(element) {
 189         var content = document.getElementById(element);
 190
 191         if (!document.getElementById("feedCatHolder")) {
 192                 for (i = 0; i < content.childNodes.length; i++) {
 193                         var child = content.childNodes[i];
 194                         try {
 195                                 child.className = child.className.replace("Selected", "");
 196                         } catch (e) {
 197                                 //
 198                         }
 199                 }
 200         } else {
 201                 for (i = 0; i < content.childNodes.length; i++) {
 202                         var child = content.childNodes[i];
 203                         if (child.id == "feedCatHolder") {
 204                                 parent.debug(child.id);
 205                                 var fcat = child.lastChild;
 206                                 for (j = 0; j < fcat.childNodes.length; j++) {
 207                                         var feed = fcat.childNodes[j];
 208                                         feed.className = feed.className.replace("Selected", "");
 209                                 }
 210                         }
 211                 }
 212         }
 213 }
 214
 215
 216 function cleanSelected(element) {
 217         var content = document.getElementById(element);
 218
 219         for (i = 0; i < content.rows.length; i++) {
 220                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 221         }
 222 }
 223
 224 function getVisibleUnreadHeadlines() {
 225         var content = document.getElementById("headlinesList");
 226
 227         var rows = new Array();
 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 = document.getElementById("headlinesList");
 241
 242         var rows = new Array();
 243
 244         for (i = 0; i < content.rows.length; i++) {
 245                 var row_id = content.rows[i].id.replace("RROW-", "");
 246                 if (row_id.length > 0) {
 247                                 rows.push(row_id);
 248                 }
 249         }
 250         return rows;
 251 }
 252
 253 function getFirstVisibleHeadlineId() {
 254         var rows = getVisibleHeadlineIds();
 255         return rows[0];
 256 }
 257
 258 function getLastVisibleHeadlineId() {
 259         var rows = getVisibleHeadlineIds();
 260         return rows[rows.length-1];
 261 }
 262
 263 function markHeadline(id) {
 264         var row = document.getElementById("RROW-" + id);
 265         if (row) {
 266                 var is_active = false;
 267
 268                 if (row.className.match("Active")) {
 269                         is_active = true;
 270                 }
 271                 row.className = row.className.replace("Selected", "");
 272                 row.className = row.className.replace("Active", "");
 273                 row.className = row.className.replace("Insensitive", "");
 274
 275                 if (is_active) {
 276                         row.className = row.className = "Active";
 277                 }
 278
 279                 var check = document.getElementById("RCHK-" + id);
 280
 281                 if (check) {
 282                         check.checked = true;
 283                 }
 284
 285                 row.className = row.className + "Selected";
 286
 287         }
 288 }
 289
 290 function getFeedIds() {
 291         var content = document.getElementById("feedsList");
 292
 293         var rows = new Array();
 294
 295         for (i = 0; i < content.rows.length; i++) {
 296                 var id = content.rows[i].id.replace("FEEDR-", "");
 297                 if (id.length > 0) {
 298                         rows.push(id);
 299                 }
 300         }
 301
 302         return rows;
 303 }
 304
 305 function setCookie(name, value, lifetime, path, domain, secure) {
 306
 307         var d = false;
 308
 309         if (lifetime) {
 310                 d = new Date();
 311                 d.setTime(lifetime * 1000);
 312         }
 313
 314         int_setCookie(name, value, d, path, domain, secure);
 315
 316 }
 317
 318 function int_setCookie(name, value, expires, path, domain, secure) {
 319         document.cookie= name + "=" + escape(value) +
 320                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 321                 ((path) ? "; path=" + path : "") +
 322                 ((domain) ? "; domain=" + domain : "") +
 323                 ((secure) ? "; secure" : "");
 324 }
 325
 326 function delCookie(name, path, domain) {
 327         if (getCookie(name)) {
 328                 document.cookie = name + "=" +
 329                 ((path) ? ";path=" + path : "") +
 330                 ((domain) ? ";domain=" + domain : "" ) +
 331                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 332         }
 333 }
 334
 335
 336 function getCookie(name) {
 337
 338         var dc = document.cookie;
 339         var prefix = name + "=";
 340         var begin = dc.indexOf("; " + prefix);
 341         if (begin == -1) {
 342             begin = dc.indexOf(prefix);
 343             if (begin != 0) return null;
 344         }
 345         else {
 346             begin += 2;
 347         }
 348         var end = document.cookie.indexOf(";", begin);
 349         if (end == -1) {
 350             end = dc.length;
 351         }
 352         return unescape(dc.substring(begin + prefix.length, end));
 353 }
 354
 355 function disableContainerChildren(id, disable, doc) {
 356
 357         if (!doc) doc = document;
 358
 359         var container = doc.getElementById(id);
 360
 361         for (var i = 0; i < container.childNodes.length; i++) {
 362                 var child = container.childNodes[i];
 363
 364                 try {
 365                         child.disabled = disable;
 366                 } catch (E) {
 367
 368                 }
 369
 370                 if (disable) {
 371                         if (child.className && child.className.match("button")) {
 372                                 child.className = "disabledButton";
 373                         }
 374                 } else {
 375                         if (child.className && child.className.match("disabledButton")) {
 376                                 child.className = "button";
 377                         }
 378                 }
 379         }
 380
 381 }
 382
 383 function gotoPreferences() {
 384         document.location.href = "prefs.php";
 385 }
 386
 387 function gotoMain() {
 388         document.location.href = "tt-rss.php";
 389 }
 390
 391 function gotoExportOpml() {
 392         document.location.href = "opml.php?op=Export";
 393 }
 394
 395 function getActiveFeedId() {
 396         return getCookie("ttrss_vf_actfeed");
 397 }
 398
 399 function setActiveFeedId(id) {
 400         return setCookie("ttrss_vf_actfeed", id);
 401 }
 402
 403 var xmlhttp_rpc = false;
 404
 405 /*@cc_on @*/
 406 /*@if (@_jscript_version >= 5)
 407 // JScript gives us Conditional compilation, we can cope with old IE versions.
 408 // and security blocked creation of the objects.
 409 try {
 410         xmlhttp_rpc = new ActiveXObject("Msxml2.XMLHTTP");
 411 } catch (e) {
 412         try {
 413                 xmlhttp_rpc = new ActiveXObject("Microsoft.XMLHTTP");
 414         } catch (E) {
 415                 xmlhttp_rpc = false;
 416         }
 417 }
 418 @end @*/
 419
 420 if (!xmlhttp_rpc && typeof XMLHttpRequest!='undefined') {
 421         xmlhttp_rpc = new XMLHttpRequest();
 422 }
 423
 424 function parse_counters(reply, f_document, title_obj, scheduled_call) {
 425         try {
 426                 for (var l = 0; l < reply.childNodes.length; l++) {
 427                         if (!reply.childNodes[l] ||
 428                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 429                                 // where did this come from?
 430                                 continue;
 431                         }
 432
 433                         var id = reply.childNodes[l].getAttribute("id");
 434                         var t = reply.childNodes[l].getAttribute("type");
 435                         var ctr = reply.childNodes[l].getAttribute("counter");
 436                         var error = reply.childNodes[l].getAttribute("error");
 437                         var has_img = reply.childNodes[l].getAttribute("hi");
 438                         var updated = reply.childNodes[l].getAttribute("updated");
 439
 440                         if (id == "global-unread") {
 441                                 title_obj.global_unread = ctr;
 442                                 title_obj.updateTitle();
 443                                 continue;
 444                         }
 445
 446                         if (t == "category") {
 447                                 var catctr = f_document.getElementById("FCATCTR-" + id);
 448                                 if (catctr) {
 449                                         catctr.innerHTML = "(" + ctr + " unread)";
 450                                 }
 451                                 continue;
 452                         }
 453
 454                         var feedctr = f_document.getElementById("FEEDCTR-" + id);
 455                         var feedu = f_document.getElementById("FEEDU-" + id);
 456                         var feedr = f_document.getElementById("FEEDR-" + id);
 457                         var feed_img = f_document.getElementById("FIMG-" + id);
 458                         var feedlink = f_document.getElementById("FEEDL-" + id);
 459
 460                         if (updated && feedlink) {
 461                                 if (error) {
 462                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 463                                 } else {
 464                                         feedlink.title = "Updated: " + updated;
 465                                 }
 466                         }
 467
 468                         if (feedctr && feedu && feedr) {
 469
 470                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 471                                         var hf = title_obj.parent.frames["headlines-frame"];
 472                                         hf.location.reload(true);
 473                                 }
 474
 475                                 feedu.innerHTML = ctr;
 476
 477                                 if (error) {
 478                                         feedr.className = feedr.className.replace("feed", "error");
 479                                 } else if (id > 0) {
 480                                         feedr.className = feedr.className.replace("error", "feed");
 481                                 }
 482
 483                                 if (ctr > 0) {
 484                                         feedctr.className = "odd";
 485                                         if (!feedr.className.match("Unread")) {
 486                                                 var is_selected = feedr.className.match("Selected");
 487
 488                                                 feedr.className = feedr.className.replace("Selected", "");
 489                                                 feedr.className = feedr.className.replace("Unread", "");
 490
 491                                                 feedr.className = feedr.className + "Unread";
 492
 493                                                 if (is_selected) {
 494                                                         feedr.className = feedr.className + "Selected";
 495                                                 }
 496
 497                                         }
 498                                 } else {
 499                                         feedctr.className = "invisible";
 500                                         feedr.className = feedr.className.replace("Unread", "");
 501                                 }
 502                         }
 503                 }
 504         } catch (e) {
 505                 exception_error("parse_counters", e);
 506         }
 507 }
 508
 509 // this one is called from feedlist context
 510 // thus title_obj passed to parse_counters is parent (e.g. main ttrss window)
 511
 512 function all_counters_callback() {
 513         if (xmlhttp_rpc.readyState == 4) {
 514                 try {
 515                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 516                                 notify("[all_counters_callback] backend did not return valid XML");
 517                                 return;
 518                         }
 519
 520                         if (!parent.frames["feeds-frame"]) {
 521                                 notify("[all_counters_callback] no parent feeds-frame");
 522                                 return;
 523                         }
 524
 525                         var reply = xmlhttp_rpc.responseXML.firstChild;
 526                         var f_document = parent.frames["feeds-frame"].document;
 527
 528                         parse_counters(reply, f_document, parent);
 529
 530                 } catch (e) {
 531                         exception_error("all_counters_callback", e);
 532                 }
 533         }
 534 }
 535
 536 function update_all_counters(feed) {
 537         if (xmlhttp_ready(xmlhttp_rpc)) {
 538                 var query = "backend.php?op=rpc&subop=getAllCounters";
 539
 540                 if (feed > 0) {
 541                         query = query + "&aid=" + feed;
 542                 }
 543
 544                 xmlhttp_rpc.open("GET", query, true);
 545                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 546                 xmlhttp_rpc.send(null);
 547         }
 548 }
 549
 550 function popupHelp(tid) {
 551         var w = window.open("backend.php?op=help&tid=" + tid,
 552                 "Popup Help",
 553                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 554 }
 555
 556 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 557   * * @author Sundar Dorai-Raj
 558   * * Email: sdoraira@vt.edu
 559   * * This program is free software; you can redistribute it and/or
 560   * * modify it under the terms of the GNU General Public License
 561   * * as published by the Free Software Foundation; either version 2
 562   * * of the License, or (at your option) any later version,
 563   * * provided that any use properly credits the author.
 564   * * This program is distributed in the hope that it will be useful,
 565   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 566   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 567   * * GNU General Public License for more details at http://www.gnu.org * * */
 568
 569   var numbers=".0123456789";
 570   function isNumeric(x) {
 571     // is x a String or a character?
 572     if(x.length>1) {
 573       // remove negative sign
 574       x=Math.abs(x)+"";
 575       for(j=0;j<x.length;j++) {
 576         // call isNumeric recursively for each character
 577         number=isNumeric(x.substring(j,j+1));
 578         if(!number) return number;
 579       }
 580       return number;
 581     }
 582     else {
 583       // if x is number return true
 584       if(numbers.indexOf(x)>=0) return true;
 585       return false;
 586     }
 587   }
 588
 589
 590 function hideOrShowFeeds(doc, hide) {
 591
 592         if (!doc.styleSheets) return;
 593
 594         var css_rules = doc.styleSheets[0].cssRules;
 595
 596         if (!css_rules || !css_rules.length) return;
 597
 598         for (i = 0; i < css_rules.length; i++) {
 599                 var rule = css_rules[i];
 600
 601                 if (rule.selectorText == "ul.feedList li.feed") {
 602                         if (!hide) {
 603                                 rule.style.display = "block";
 604                         } else {
 605                                 rule.style.display = "none";
 606                         }
 607                 }
 608
 609         }
 610
 611 }
 612
 613 function selectTableRow(r, do_select) {
 614         r.className = r.className.replace("Selected", "");
 615
 616         if (do_select) {
 617                 r.className = r.className + "Selected";
 618         }
 619 }
 620
 621 function selectTableRowById(elem_id, check_id, do_select) {
 622
 623         try {
 624
 625                 var row = document.getElementById(elem_id);
 626
 627                 if (row) {
 628                         selectTableRow(row, do_select);
 629                 }
 630
 631                 var check = document.getElementById(check_id);
 632
 633                 if (check) {
 634                         check.checked = do_select;
 635                 }
 636         } catch (e) {
 637                 exception_error("selectTableRowById", e);
 638         }
 639 }
 640
 641 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 642         classcheck, reset_others) {
 643
 644         var content = document.getElementById(content_id);
 645
 646         if (!content) {
 647                 alert("[selectTableRows] Element " + content_id + " not found.");
 648                 return;
 649         }
 650
 651         for (i = 0; i < content.rows.length; i++) {
 652                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 653
 654                         if (content.rows[i].id.match(prefix)) {
 655                                 selectTableRow(content.rows[i], do_select);
 656
 657                                 var row_id = content.rows[i].id.replace(prefix, "");
 658                                 var check = document.getElementById(check_prefix + row_id);
 659
 660                                 if (check) {
 661                                         check.checked = do_select;
 662                                 }
 663                         } else if (reset_others) {
 664                                 selectTableRow(content.rows[i], false);
 665
 666                                 var row_id = content.rows[i].id.replace(prefix, "");
 667                                 var check = document.getElementById(check_prefix + row_id);
 668
 669                                 if (check) {
 670                                         check.checked = false;
 671                                 }
 672
 673                         }
 674                 } else if (reset_others) {
 675                         selectTableRow(content.rows[i], false);
 676
 677                         var row_id = content.rows[i].id.replace(prefix, "");
 678                         var check = document.getElementById(check_prefix + row_id);
 679
 680                         if (check) {
 681                                 check.checked = false;
 682                         }
 683
 684                 }
 685         }
 686 }
 687
 688 function getSelectedTableRowIds(content_id, prefix) {
 689
 690         var content = document.getElementById(content_id);
 691
 692         if (!content) {
 693                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 694                 return;
 695         }
 696
 697         var sel_rows = new Array();
 698
 699         for (i = 0; i < content.rows.length; i++) {
 700                 if (content.rows[i].id.match(prefix) &&
 701                                 content.rows[i].className.match("Selected")) {
 702
 703                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 704                         sel_rows.push(row_id);
 705                 }
 706         }
 707
 708         return sel_rows;
 709
 710 }
 711
 712 function toggleSelectRowById(sender, id) {
 713         var row = document.getElementById(id);
 714
 715         if (sender.checked) {
 716                 if (!row.className.match("Selected")) {
 717                         row.className = row.className + "Selected";
 718                 }
 719         } else {
 720                 if (row.className.match("Selected")) {
 721                         row.className = row.className.replace("Selected", "");
 722                 }
 723         }
 724 }
 725
 726 function toggleSelectListRow(sender) {
 727         var parent_row = sender.parentNode;
 728
 729         if (sender.checked) {
 730                 if (!parent_row.className.match("Selected")) {
 731                         parent_row.className = parent_row.className + "Selected";
 732                 }
 733         } else {
 734                 if (parent_row.className.match("Selected")) {
 735                         parent_row.className = parent_row.className.replace("Selected", "");
 736                 }
 737         }
 738 }
 739
 740
 741 function toggleSelectRow(sender) {
 742         var parent_row = sender.parentNode.parentNode;
 743
 744         if (sender.checked) {
 745                 if (!parent_row.className.match("Selected")) {
 746                         parent_row.className = parent_row.className + "Selected";
 747                 }
 748         } else {
 749                 if (parent_row.className.match("Selected")) {
 750                         parent_row.className = parent_row.className.replace("Selected", "");
 751                 }
 752         }
 753 }
 754
 755 function openExternalUrl(url) {
 756         var w = window.open(url);
 757 }
 758
 759 function getRelativeFeedId(list, id, direction, unread_only) {
 760         if (!id) {
 761                 if (direction == "next") {
 762                         for (i = 0; i < list.childNodes.length; i++) {
 763                                 var child = list.childNodes[i];
 764                                 if (child.id && child.id == "feedCatHolder") {
 765                                         if (child.lastChild) {
 766                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 767                                                 if (cr) return cr;
 768                                         }
 769                                 } else if (child.id && child.id.match("FEEDR-")) {
 770                                         return child.id.replace('FEEDR-', '');
 771                                 }
 772                         }
 773                 }
 774
 775                 // FIXME select last feed doesn't work when only unread feeds are visible
 776
 777                 if (direction == "prev") {
 778                         for (i = list.childNodes.length-1; i >= 0; i--) {
 779                                 var child = list.childNodes[i];
 780                                 if (child.id == "feedCatHolder") {
 781                                         if (child.firstChild) {
 782                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 783                                                 if (cr) return cr;
 784                                         }
 785                                 } else if (child.id.match("FEEDR-")) {
 786
 787                                         if (getCookie("ttrss_vf_hreadf") == 1) {
 788                                                 if (child.className != "feed") {
 789                                                         alert(child.className);
 790                                                         return child.id.replace('FEEDR-', '');
 791                                                 }
 792                                         } else {
 793                                                         return child.id.replace('FEEDR-', '');
 794                                         }
 795                                 }
 796                         }
 797                 }
 798         } else {
 799
 800                 var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
 801
 802                 if (getCookie("ttrss_vf_hreadf") == 1) {
 803                         unread_only = true;
 804                 }
 805
 806                 if (direction == "next") {
 807
 808                         var e = feed;
 809
 810                         while (e) {
 811
 812                                 if (e.nextSibling) {
 813
 814                                         e = e.nextSibling;
 815
 816                                 } else if (e.parentNode.parentNode.nextSibling) {
 817
 818                                         var this_cat = e.parentNode.parentNode;
 819
 820                                         e = false;
 821
 822                                         if (this_cat && this_cat.nextSibling) {
 823                                                 while (!e && this_cat.nextSibling) {
 824                                                         this_cat = this_cat.nextSibling;
 825                                                         if (this_cat.id == "feedCatHolder") {
 826                                                                 e = this_cat.firstChild.firstChild;
 827                                                         }
 828                                                 }
 829                                         }
 830
 831                                 } else {
 832                                         e = false;
 833                            }
 834
 835                                 if (e) {
 836                                         if (!unread_only || (unread_only && e.className != "feed" &&
 837                                                         e.className != "error"))        {
 838                                                 return e.id.replace("FEEDR-", "");
 839                                         }
 840                                 }
 841                         }
 842
 843                 } else if (direction == "prev") {
 844
 845                         var e = feed;
 846
 847                         while (e) {
 848
 849                                 if (e.previousSibling) {
 850
 851                                         e = e.previousSibling;
 852
 853                                 } else if (e.parentNode.parentNode.previousSibling) {
 854
 855                                         var this_cat = e.parentNode.parentNode;
 856
 857                                         e = false;
 858
 859                                         if (this_cat && this_cat.previousSibling) {
 860                                                 while (!e && this_cat.previousSibling) {
 861                                                         this_cat = this_cat.previousSibling;
 862                                                         if (this_cat.id == "feedCatHolder") {
 863                                                                 e = this_cat.firstChild.lastChild;
 864                                                         }
 865                                                 }
 866                                         }
 867
 868                                 } else {
 869                                         e = false;
 870                            }
 871
 872                                 if (e) {
 873                                         if (!unread_only || (unread_only && e.className != "feed" &&
 874                                                         e.className != "error"))        {
 875                                                 return e.id.replace("FEEDR-", "");
 876                                         }
 877                                 }
 878                         }
 879                 }
 880         }
 881 }
 882
 883 function showBlockElement(id) {
 884         var elem = document.getElementById(id);
 885
 886         if (elem) {
 887                 elem.style.display = "block";
 888         } else {
 889                 alert("[showBlockElement] can't find element with id " + id);
 890         }
 891 }
 892
 893 function hideParentElement(e) {
 894         e.parentNode.style.display = "none";
 895 }
 896
 897 function dropboxSelect(e, v) {
 898         for (i = 0; i < e.length; i++) {
 899                 if (e[i].value == v) {
 900                         e.selectedIndex = i;
 901                         break;
 902                 }
 903         }
 904 }
 905
 906 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 907 // bugfixed just a little bit :-)
 908 function getURLParam(strParamName){
 909   var strReturn = "";
 910   var strHref = window.location.href;
 911
 912   if (strHref.indexOf("#") == strHref.length-1) {
 913                 strHref = strHref.substring(0, strHref.length-1);
 914   }
 915
 916   if ( strHref.indexOf("?") > -1 ){
 917     var strQueryString = strHref.substr(strHref.indexOf("?"));
 918     var aQueryString = strQueryString.split("&");
 919     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 920       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 921         var aParam = aQueryString[iParam].split("=");
 922         strReturn = aParam[1];
 923         break;
 924       }
 925     }
 926   }
 927   return strReturn;
 928 }
 929
 930 function leading_zero(p) {
 931         var s = String(p);
 932         if (s.length == 1) s = "0" + s;
 933         return s;
 934 }
 935
 936 function center_element(e) {
 937
 938         try {
 939                 var c_width = document.body.clientWidth;
 940                 var c_height = document.body.clientHeight;
 941
 942                 var c_scroll = document.body.scrollTop;
 943
 944                 var e_width = e.clientWidth;
 945                 var e_height = e.clientHeight;
 946
 947                 var set_y = (c_height / 2) + c_scroll - (e_height / 2);
 948                 var set_x = (c_width / 2) - (e_width / 2);
 949
 950                 e.style.top = set_y + "px";
 951                 e.style.left = set_x + "px";
 952         } catch (e) {
 953                 exception_error("center_element", e);
 954         }
 955 }
 956
 957 function closeInfoBox() {
 958         var box = document.getElementById('infoBox');
 959         var shadow = document.getElementById('infoBoxShadow');
 960
 961         if (shadow) {
 962                 shadow.style.display = "none";
 963         } else if (box) {
 964                 box.style.display = "none";
 965         }
 966
 967         enableHotkeys();
 968 }
 969
 970
 971 function displayDlg(id, param) {
 972
 973         if (!xmlhttp_ready(xmlhttp)) {
 974                 printLockingError();
 975                 return
 976         }
 977
 978         notify("");
 979
 980         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
 981                 param_escape(id) + "&param=" + param_escape(param), true);
 982         xmlhttp.onreadystatechange=infobox_callback;
 983         xmlhttp.send(null);
 984
 985         disableHotkeys();
 986
 987 }
 988
 989 function infobox_submit_callback() {
 990         if (xmlhttp.readyState == 4) {
 991                 notify(xmlhttp.responseText);
 992                 closeInfoBox();
 993
 994                 // called from prefs, reload tab
 995                 if (active_tab) {
 996                         selectTab(active_tab, false);
 997                 }
 998         }
 999 }
1000
1001 function infobox_callback() {
1002         if (xmlhttp.readyState == 4) {
1003                 var box = document.getElementById('infoBox');
1004                 var shadow = document.getElementById('infoBoxShadow');
1005                 if (box) {
1006                         box.innerHTML=xmlhttp.responseText;
1007                         if (shadow) {
1008                                 shadow.style.display = "block";
1009                         } else {
1010                                 box.style.display = "block";
1011                         }
1012                 }
1013         }
1014 }
1015
1016 function qaddFilter() {
1017
1018         if (!xmlhttp_ready(xmlhttp)) {
1019                 printLockingError();
1020                 return
1021         }
1022
1023         var regexp = document.getElementById("fadd_regexp");
1024         var match = document.getElementById("fadd_match");
1025         var feed = document.getElementById("fadd_feed");
1026         var action = document.getElementById("fadd_action");
1027
1028         if (regexp.value.length == 0) {
1029                 alert("Missing filter expression.");
1030         } else {
1031                 notify("Adding filter...");
1032
1033                 var v_match = match[match.selectedIndex].text;
1034                 var feed_id = feed[feed.selectedIndex].id;
1035                 var action_id = action[action.selectedIndex].id;
1036
1037                 xmlhttp.open("GET", "backend.php?op=pref-filters&quiet=1&subop=add&regexp=" +
1038                         param_escape(regexp.value) + "&match=" + v_match +
1039                         "&fid=" + param_escape(feed_id) + "&aid=" + param_escape(action_id), true);
1040
1041                 xmlhttp.onreadystatechange=infobox_submit_callback;
1042                 xmlhttp.send(null);
1043
1044                 regexp.value = "";
1045         }
1046
1047 }
1048
1049 function toggleSubmitNotEmpty(e, submit_id) {
1050         try {
1051                 document.getElementById(submit_id).disabled = (e.value == "")
1052         } catch (e) {
1053                 exception_error("toggleSubmitNotEmpty", e);
1054         }
1055 }
1056