functions.js

   1 var hotkeys_enabled = true;
   2
   3 function exception_error(location, e) {
   4         var msg;
   5
   6         if (e.fileName) {
   7                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
   8
   9                 msg = "Exception: " + e.name + ", " + e.message +
  10                         "\nFunction: " + location + "()" +
  11                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  12         } else {
  13                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  14         }
  15
  16         alert(msg);
  17 }
  18
  19 function disableHotkeys() {
  20         hotkeys_enabled = false;
  21 }
  22
  23 function enableHotkeys() {
  24         hotkeys_enabled = true;
  25 }
  26
  27 function xmlhttp_ready(obj) {
  28         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  29 }
  30
  31 function notify_callback() {
  32         var container = document.getElementById('notify');
  33         if (xmlhttp.readyState == 4) {
  34                 container.innerHTML=xmlhttp.responseText;
  35         }
  36 }
  37
  38 function rpc_notify_callback() {
  39         var container = document.getElementById('notify');
  40         if (xmlhttp_rpc.readyState == 4) {
  41                 container.innerHTML=xmlhttp_rpc.responseText;
  42         }
  43 }
  44
  45 function rpc_pnotify_callback() {
  46         var container = parent.document.getElementById('notify');
  47         if (xmlhttp_rpc.readyState == 4) {
  48                 container.innerHTML=xmlhttp_rpc.responseText;
  49         }
  50 }
  51
  52 function param_escape(arg) {
  53         if (typeof encodeURIComponent != 'undefined')
  54                 return encodeURIComponent(arg);
  55         else
  56                 return escape(arg);
  57 }
  58
  59 function param_unescape(arg) {
  60         if (typeof decodeURIComponent != 'undefined')
  61                 return decodeURIComponent(arg);
  62         else
  63                 return unescape(arg);
  64 }
  65
  66 function delay(gap) {
  67         var then,now;
  68         then=new Date().getTime();
  69         now=then;
  70         while((now-then)<gap) {
  71                 now=new Date().getTime();
  72         }
  73 }
  74
  75 var notify_hide_timerid = false;
  76 var notify_last_doc = false;
  77
  78 function hide_notify() {
  79         if (notify_last_doc) {
  80                 var n = notify_last_doc.getElementById("notify");
  81                 if (navigator.userAgent.match("Firefox")) {
  82                         if (notify_opacity >= 0) {
  83                                 notify_opacity = notify_opacity - 0.2;
  84                                 n.style.opacity = notify_opacity;
  85                                 notify_hide_timerid = window.setTimeout(hide_notify, 20);
  86                         } else {
  87                                 n.style.display = "none";
  88                                 n.style.opacity = 1;
  89                         }
  90                 } else {
  91                         n.style.display = "none";
  92                 }
  93         }
  94 }
  95
  96 function notify_real(msg, doc) {
  97
  98         var n = doc.getElementById("notify");
  99         var nb = doc.getElementById("notify_body");
 100
 101         if (!n || !nb) return;
 102
 103         if (msg == "") {
 104                 n.style.display = "none";
 105         } else {
 106                 n.style.display = "block";
 107         }
 108
 109         nb.innerHTML = msg;
 110
 111         if (notify_hide_timerid) {
 112                 window.clearTimeout(notify_hide_timerid);
 113         }
 114
 115         notify_last_doc = doc;
 116         notify_opacity = 1;
 117
 118         notify_hide_timerid = window.setTimeout(hide_notify, 3000);
 119 }
 120
 121 function p_notify(msg) {
 122         notify_real(msg, parent.document);
 123 }
 124
 125 function notify(msg) {
 126         notify_real(msg, document);
 127 }
 128
 129 function printLockingError() {
 130         notify("Please wait until operation finishes");}
 131
 132 var seq = "";
 133
 134 function hotkey_handler(e) {
 135
 136         var keycode;
 137
 138         if (!hotkeys_enabled) return;
 139
 140         if (window.event) {
 141                 keycode = window.event.keyCode;
 142         } else if (e) {
 143                 keycode = e.which;
 144         }
 145
 146         if (keycode == 13 || keycode == 27) {
 147                 seq = "";
 148         } else {
 149                 seq = seq + "" + keycode;
 150         }
 151
 152         if (document.getElementById("piggie")) {
 153
 154                 if (seq.match("807371717369")) {
 155                         seq = "";
 156                         localPiggieFunction(true);
 157                 } else {
 158                         localPiggieFunction(false);
 159                 }
 160         }
 161
 162         if (typeof localHotkeyHandler != 'undefined') {
 163                 try {
 164                         localHotkeyHandler(keycode);
 165                 } catch (e) {
 166                         exception_error("hotkey_handler", e);
 167                 }
 168         }
 169
 170 }
 171
 172 function cleanSelectedList(element) {
 173         var content = document.getElementById(element);
 174
 175         if (!document.getElementById("feedCatHolder")) {
 176                 for (i = 0; i < content.childNodes.length; i++) {
 177                         var child = content.childNodes[i];
 178                         try {
 179                                 child.className = child.className.replace("Selected", "");
 180                         } catch (e) {
 181                                 //
 182                         }
 183                 }
 184         } else {
 185                 for (i = 0; i < content.childNodes.length; i++) {
 186                         var child = content.childNodes[i];
 187                         if (child.id == "feedCatHolder") {
 188                                 parent.debug(child.id);
 189                                 var fcat = child.lastChild;
 190                                 for (j = 0; j < fcat.childNodes.length; j++) {
 191                                         var feed = fcat.childNodes[j];
 192                                         feed.className = feed.className.replace("Selected", "");
 193                                 }
 194                         }
 195                 }
 196         }
 197 }
 198
 199
 200 function cleanSelected(element) {
 201         var content = document.getElementById(element);
 202
 203         for (i = 0; i < content.rows.length; i++) {
 204                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 205         }
 206 }
 207
 208 function getVisibleUnreadHeadlines() {
 209         var content = document.getElementById("headlinesList");
 210
 211         var rows = new Array();
 212
 213         for (i = 0; i < content.rows.length; i++) {
 214                 var row_id = content.rows[i].id.replace("RROW-", "");
 215                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 216                                 rows.push(row_id);
 217                 }
 218         }
 219         return rows;
 220 }
 221
 222 function getVisibleHeadlineIds() {
 223
 224         var content = document.getElementById("headlinesList");
 225
 226         var rows = new Array();
 227
 228         for (i = 0; i < content.rows.length; i++) {
 229                 var row_id = content.rows[i].id.replace("RROW-", "");
 230                 if (row_id.length > 0) {
 231                                 rows.push(row_id);
 232                 }
 233         }
 234         return rows;
 235 }
 236
 237 function getFirstVisibleHeadlineId() {
 238         var rows = getVisibleHeadlineIds();
 239         return rows[0];
 240 }
 241
 242 function getLastVisibleHeadlineId() {
 243         var rows = getVisibleHeadlineIds();
 244         return rows[rows.length-1];
 245 }
 246
 247 function markHeadline(id) {
 248         var row = document.getElementById("RROW-" + id);
 249         if (row) {
 250                 var is_active = false;
 251
 252                 if (row.className.match("Active")) {
 253                         is_active = true;
 254                 }
 255                 row.className = row.className.replace("Selected", "");
 256                 row.className = row.className.replace("Active", "");
 257                 row.className = row.className.replace("Insensitive", "");
 258
 259                 if (is_active) {
 260                         row.className = row.className = "Active";
 261                 }
 262
 263                 var check = document.getElementById("RCHK-" + id);
 264
 265                 if (check) {
 266                         check.checked = true;
 267                 }
 268
 269                 row.className = row.className + "Selected";
 270
 271         }
 272 }
 273
 274 function getFeedIds() {
 275         var content = document.getElementById("feedsList");
 276
 277         var rows = new Array();
 278
 279         for (i = 0; i < content.rows.length; i++) {
 280                 var id = content.rows[i].id.replace("FEEDR-", "");
 281                 if (id.length > 0) {
 282                         rows.push(id);
 283                 }
 284         }
 285
 286         return rows;
 287 }
 288
 289 function setCookie(name, value, lifetime, path, domain, secure) {
 290
 291         var d = false;
 292
 293         if (lifetime) {
 294                 d = new Date();
 295                 d.setTime(lifetime * 1000);
 296         }
 297
 298         int_setCookie(name, value, d, path, domain, secure);
 299
 300 }
 301
 302 function int_setCookie(name, value, expires, path, domain, secure) {
 303         document.cookie= name + "=" + escape(value) +
 304                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 305                 ((path) ? "; path=" + path : "") +
 306                 ((domain) ? "; domain=" + domain : "") +
 307                 ((secure) ? "; secure" : "");
 308 }
 309
 310 function delCookie(name, path, domain) {
 311         if (getCookie(name)) {
 312                 document.cookie = name + "=" +
 313                 ((path) ? ";path=" + path : "") +
 314                 ((domain) ? ";domain=" + domain : "" ) +
 315                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 316         }
 317 }
 318
 319
 320 function getCookie(name) {
 321
 322         var dc = document.cookie;
 323         var prefix = name + "=";
 324         var begin = dc.indexOf("; " + prefix);
 325         if (begin == -1) {
 326             begin = dc.indexOf(prefix);
 327             if (begin != 0) return null;
 328         }
 329         else {
 330             begin += 2;
 331         }
 332         var end = document.cookie.indexOf(";", begin);
 333         if (end == -1) {
 334             end = dc.length;
 335         }
 336         return unescape(dc.substring(begin + prefix.length, end));
 337 }
 338
 339 function disableContainerChildren(id, disable, doc) {
 340
 341         if (!doc) doc = document;
 342
 343         var container = doc.getElementById(id);
 344
 345         for (var i = 0; i < container.childNodes.length; i++) {
 346                 var child = container.childNodes[i];
 347
 348                 try {
 349                         child.disabled = disable;
 350                 } catch (E) {
 351
 352                 }
 353
 354                 if (disable) {
 355                         if (child.className && child.className.match("button")) {
 356                                 child.className = "disabledButton";
 357                         }
 358                 } else {
 359                         if (child.className && child.className.match("disabledButton")) {
 360                                 child.className = "button";
 361                         }
 362                 }
 363         }
 364
 365 }
 366
 367 function gotoPreferences() {
 368         document.location.href = "prefs.php";
 369 }
 370
 371 function gotoMain() {
 372         document.location.href = "tt-rss.php";
 373 }
 374
 375 function gotoExportOpml() {
 376         document.location.href = "opml.php?op=Export";
 377 }
 378
 379 function getActiveFeedId() {
 380         return getCookie("ttrss_vf_actfeed");
 381 }
 382
 383 function setActiveFeedId(id) {
 384         return setCookie("ttrss_vf_actfeed", id);
 385 }
 386
 387 var xmlhttp_rpc = false;
 388
 389 /*@cc_on @*/
 390 /*@if (@_jscript_version >= 5)
 391 // JScript gives us Conditional compilation, we can cope with old IE versions.
 392 // and security blocked creation of the objects.
 393 try {
 394         xmlhttp_rpc = new ActiveXObject("Msxml2.XMLHTTP");
 395 } catch (e) {
 396         try {
 397                 xmlhttp_rpc = new ActiveXObject("Microsoft.XMLHTTP");
 398         } catch (E) {
 399                 xmlhttp_rpc = false;
 400         }
 401 }
 402 @end @*/
 403
 404 if (!xmlhttp_rpc && typeof XMLHttpRequest!='undefined') {
 405         xmlhttp_rpc = new XMLHttpRequest();
 406 }
 407
 408 function parse_counters(reply, f_document, title_obj, scheduled_call) {
 409         try {
 410                 for (var l = 0; l < reply.childNodes.length; l++) {
 411                         if (!reply.childNodes[l] ||
 412                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 413                                 // where did this come from?
 414                                 continue;
 415                         }
 416
 417                         var id = reply.childNodes[l].getAttribute("id");
 418                         var t = reply.childNodes[l].getAttribute("type");
 419                         var ctr = reply.childNodes[l].getAttribute("counter");
 420                         var error = reply.childNodes[l].getAttribute("error");
 421                         var has_img = reply.childNodes[l].getAttribute("hi");
 422                         var updated = reply.childNodes[l].getAttribute("updated");
 423
 424                         if (id == "global-unread") {
 425                                 title_obj.global_unread = ctr;
 426                                 title_obj.updateTitle();
 427                                 continue;
 428                         }
 429
 430                         if (t == "category") {
 431                                 var catctr = f_document.getElementById("FCATCTR-" + id);
 432                                 if (catctr) {
 433                                         catctr.innerHTML = "(" + ctr + " unread)";
 434                                 }
 435                                 continue;
 436                         }
 437
 438                         var feedctr = f_document.getElementById("FEEDCTR-" + id);
 439                         var feedu = f_document.getElementById("FEEDU-" + id);
 440                         var feedr = f_document.getElementById("FEEDR-" + id);
 441                         var feed_img = f_document.getElementById("FIMG-" + id);
 442                         var feedlink = f_document.getElementById("FEEDL-" + id);
 443
 444                         if (updated && feedlink) {
 445                                 if (error) {
 446                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 447                                 } else {
 448                                         feedlink.title = "Updated: " + updated;
 449                                 }
 450                         }
 451
 452                         if (feedctr && feedu && feedr) {
 453
 454                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 455                                         var hf = title_obj.parent.frames["headlines-frame"];
 456                                         hf.location.reload(true);
 457                                 }
 458
 459                                 feedu.innerHTML = ctr;
 460
 461                                 if (error) {
 462                                         feedr.className = feedr.className.replace("feed", "error");
 463                                 } else if (id > 0) {
 464                                         feedr.className = feedr.className.replace("error", "feed");
 465                                 }
 466
 467                                 if (ctr > 0) {
 468                                         feedctr.className = "odd";
 469                                         if (!feedr.className.match("Unread")) {
 470                                                 var is_selected = feedr.className.match("Selected");
 471
 472                                                 feedr.className = feedr.className.replace("Selected", "");
 473                                                 feedr.className = feedr.className.replace("Unread", "");
 474
 475                                                 feedr.className = feedr.className + "Unread";
 476
 477                                                 if (is_selected) {
 478                                                         feedr.className = feedr.className + "Selected";
 479                                                 }
 480
 481                                         }
 482                                 } else {
 483                                         feedctr.className = "invisible";
 484                                         feedr.className = feedr.className.replace("Unread", "");
 485                                 }
 486                         }
 487                 }
 488         } catch (e) {
 489                 exception_error("parse_counters", e);
 490         }
 491 }
 492
 493 // this one is called from feedlist context
 494 // thus title_obj passed to parse_counters is parent (e.g. main ttrss window)
 495
 496 function all_counters_callback() {
 497         if (xmlhttp_rpc.readyState == 4) {
 498                 try {
 499                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 500                                 notify("[all_counters_callback] backend did not return valid XML");
 501                                 return;
 502                         }
 503
 504                         if (!parent.frames["feeds-frame"]) {
 505                                 notify("[all_counters_callback] no parent feeds-frame");
 506                                 return;
 507                         }
 508
 509                         var reply = xmlhttp_rpc.responseXML.firstChild;
 510                         var f_document = parent.frames["feeds-frame"].document;
 511
 512                         parse_counters(reply, f_document, parent);
 513
 514                 } catch (e) {
 515                         exception_error("all_counters_callback", e);
 516                 }
 517         }
 518 }
 519
 520 function update_all_counters(feed) {
 521         if (xmlhttp_ready(xmlhttp_rpc)) {
 522                 var query = "backend.php?op=rpc&subop=getAllCounters";
 523
 524                 if (feed > 0) {
 525                         query = query + "&aid=" + feed;
 526                 }
 527
 528                 xmlhttp_rpc.open("GET", query, true);
 529                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 530                 xmlhttp_rpc.send(null);
 531         }
 532 }
 533
 534 function popupHelp(tid) {
 535         var w = window.open("backend.php?op=help&tid=" + tid,
 536                 "Popup Help",
 537                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 538 }
 539
 540 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 541   * * @author Sundar Dorai-Raj
 542   * * Email: sdoraira@vt.edu
 543   * * This program is free software; you can redistribute it and/or
 544   * * modify it under the terms of the GNU General Public License
 545   * * as published by the Free Software Foundation; either version 2
 546   * * of the License, or (at your option) any later version,
 547   * * provided that any use properly credits the author.
 548   * * This program is distributed in the hope that it will be useful,
 549   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 550   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 551   * * GNU General Public License for more details at http://www.gnu.org * * */
 552
 553   var numbers=".0123456789";
 554   function isNumeric(x) {
 555     // is x a String or a character?
 556     if(x.length>1) {
 557       // remove negative sign
 558       x=Math.abs(x)+"";
 559       for(j=0;j<x.length;j++) {
 560         // call isNumeric recursively for each character
 561         number=isNumeric(x.substring(j,j+1));
 562         if(!number) return number;
 563       }
 564       return number;
 565     }
 566     else {
 567       // if x is number return true
 568       if(numbers.indexOf(x)>=0) return true;
 569       return false;
 570     }
 571   }
 572
 573
 574 function hideOrShowFeeds(doc, hide) {
 575
 576         if (!doc.styleSheets) return;
 577
 578         var css_rules = doc.styleSheets[0].cssRules;
 579
 580         if (!css_rules || !css_rules.length) return;
 581
 582         for (i = 0; i < css_rules.length; i++) {
 583                 var rule = css_rules[i];
 584
 585                 if (rule.selectorText == "ul.feedList li.feed") {
 586                         if (!hide) {
 587                                 rule.style.display = "block";
 588                         } else {
 589                                 rule.style.display = "none";
 590                         }
 591                 }
 592
 593         }
 594
 595 }
 596
 597 function selectTableRow(r, do_select) {
 598         r.className = r.className.replace("Selected", "");
 599
 600         if (do_select) {
 601                 r.className = r.className + "Selected";
 602         }
 603 }
 604
 605 function selectTableRowById(elem_id, check_id, do_select) {
 606
 607         try {
 608
 609                 var row = document.getElementById(elem_id);
 610
 611                 if (row) {
 612                         selectTableRow(row, do_select);
 613                 }
 614
 615                 var check = document.getElementById(check_id);
 616
 617                 if (check) {
 618                         check.checked = do_select;
 619                 }
 620         } catch (e) {
 621                 exception_error("selectTableRowById", e);
 622         }
 623 }
 624
 625 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 626         classcheck, reset_others) {
 627
 628         var content = document.getElementById(content_id);
 629
 630         if (!content) {
 631                 alert("[selectTableRows] Element " + content_id + " not found.");
 632                 return;
 633         }
 634
 635         for (i = 0; i < content.rows.length; i++) {
 636                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 637
 638                         if (content.rows[i].id.match(prefix)) {
 639                                 selectTableRow(content.rows[i], do_select);
 640
 641                                 var row_id = content.rows[i].id.replace(prefix, "");
 642                                 var check = document.getElementById(check_prefix + row_id);
 643
 644                                 if (check) {
 645                                         check.checked = do_select;
 646                                 }
 647                         } else if (reset_others) {
 648                                 selectTableRow(content.rows[i], false);
 649
 650                                 var row_id = content.rows[i].id.replace(prefix, "");
 651                                 var check = document.getElementById(check_prefix + row_id);
 652
 653                                 if (check) {
 654                                         check.checked = false;
 655                                 }
 656
 657                         }
 658                 } else if (reset_others) {
 659                         selectTableRow(content.rows[i], false);
 660
 661                         var row_id = content.rows[i].id.replace(prefix, "");
 662                         var check = document.getElementById(check_prefix + row_id);
 663
 664                         if (check) {
 665                                 check.checked = false;
 666                         }
 667
 668                 }
 669         }
 670 }
 671
 672 function getSelectedTableRowIds(content_id, prefix) {
 673
 674         var content = document.getElementById(content_id);
 675
 676         if (!content) {
 677                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 678                 return;
 679         }
 680
 681         var sel_rows = new Array();
 682
 683         for (i = 0; i < content.rows.length; i++) {
 684                 if (content.rows[i].id.match(prefix) &&
 685                                 content.rows[i].className.match("Selected")) {
 686
 687                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 688                         sel_rows.push(row_id);
 689                 }
 690         }
 691
 692         return sel_rows;
 693
 694 }
 695
 696 function toggleSelectRowById(sender, id) {
 697         var row = document.getElementById(id);
 698
 699         if (sender.checked) {
 700                 if (!row.className.match("Selected")) {
 701                         row.className = row.className + "Selected";
 702                 }
 703         } else {
 704                 if (row.className.match("Selected")) {
 705                         row.className = row.className.replace("Selected", "");
 706                 }
 707         }
 708 }
 709
 710 function toggleSelectListRow(sender) {
 711         var parent_row = sender.parentNode;
 712
 713         if (sender.checked) {
 714                 if (!parent_row.className.match("Selected")) {
 715                         parent_row.className = parent_row.className + "Selected";
 716                 }
 717         } else {
 718                 if (parent_row.className.match("Selected")) {
 719                         parent_row.className = parent_row.className.replace("Selected", "");
 720                 }
 721         }
 722 }
 723
 724
 725 function toggleSelectRow(sender) {
 726         var parent_row = sender.parentNode.parentNode;
 727
 728         if (sender.checked) {
 729                 if (!parent_row.className.match("Selected")) {
 730                         parent_row.className = parent_row.className + "Selected";
 731                 }
 732         } else {
 733                 if (parent_row.className.match("Selected")) {
 734                         parent_row.className = parent_row.className.replace("Selected", "");
 735                 }
 736         }
 737 }
 738
 739 function openExternalUrl(url) {
 740         var w = window.open(url);
 741 }
 742
 743 function getRelativeFeedId(list, id, direction, unread_only) {
 744         if (!id) {
 745                 if (direction == "next") {
 746                         for (i = 0; i < list.childNodes.length; i++) {
 747                                 var child = list.childNodes[i];
 748                                 if (child.id && child.id == "feedCatHolder") {
 749                                         if (child.lastChild) {
 750                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 751                                                 if (cr) return cr;
 752                                         }
 753                                 } else if (child.id && child.id.match("FEEDR-")) {
 754                                         return child.id.replace('FEEDR-', '');
 755                                 }
 756                         }
 757                 }
 758
 759                 // FIXME select last feed doesn't work when only unread feeds are visible
 760
 761                 if (direction == "prev") {
 762                         for (i = list.childNodes.length-1; i >= 0; i--) {
 763                                 var child = list.childNodes[i];
 764                                 if (child.id == "feedCatHolder") {
 765                                         if (child.firstChild) {
 766                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 767                                                 if (cr) return cr;
 768                                         }
 769                                 } else if (child.id.match("FEEDR-")) {
 770
 771                                         if (getCookie("ttrss_vf_hreadf") == 1) {
 772                                                 if (child.className != "feed") {
 773                                                         alert(child.className);
 774                                                         return child.id.replace('FEEDR-', '');
 775                                                 }
 776                                         } else {
 777                                                         return child.id.replace('FEEDR-', '');
 778                                         }
 779                                 }
 780                         }
 781                 }
 782         } else {
 783
 784                 var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
 785
 786                 if (getCookie("ttrss_vf_hreadf") == 1) {
 787                         unread_only = true;
 788                 }
 789
 790                 if (direction == "next") {
 791
 792                         var e = feed;
 793
 794                         while (e) {
 795
 796                                 if (e.nextSibling) {
 797
 798                                         e = e.nextSibling;
 799
 800                                 } else if (e.parentNode.parentNode.nextSibling) {
 801
 802                                         var this_cat = e.parentNode.parentNode;
 803
 804                                         e = false;
 805
 806                                         if (this_cat && this_cat.nextSibling) {
 807                                                 while (!e && this_cat.nextSibling) {
 808                                                         this_cat = this_cat.nextSibling;
 809                                                         if (this_cat.id == "feedCatHolder") {
 810                                                                 e = this_cat.firstChild.firstChild;
 811                                                         }
 812                                                 }
 813                                         }
 814
 815                                 } else {
 816                                         e = false;
 817                            }
 818
 819                                 if (e) {
 820                                         if (!unread_only || (unread_only && e.className != "feed" &&
 821                                                         e.className != "error"))        {
 822                                                 return e.id.replace("FEEDR-", "");
 823                                         }
 824                                 }
 825                         }
 826
 827                 } else if (direction == "prev") {
 828
 829                         var e = feed;
 830
 831                         while (e) {
 832
 833                                 if (e.previousSibling) {
 834
 835                                         e = e.previousSibling;
 836
 837                                 } else if (e.parentNode.parentNode.previousSibling) {
 838
 839                                         var this_cat = e.parentNode.parentNode;
 840
 841                                         e = false;
 842
 843                                         if (this_cat && this_cat.previousSibling) {
 844                                                 while (!e && this_cat.previousSibling) {
 845                                                         this_cat = this_cat.previousSibling;
 846                                                         if (this_cat.id == "feedCatHolder") {
 847                                                                 e = this_cat.firstChild.lastChild;
 848                                                         }
 849                                                 }
 850                                         }
 851
 852                                 } else {
 853                                         e = false;
 854                            }
 855
 856                                 if (e) {
 857                                         if (!unread_only || (unread_only && e.className != "feed" &&
 858                                                         e.className != "error"))        {
 859                                                 return e.id.replace("FEEDR-", "");
 860                                         }
 861                                 }
 862                         }
 863                 }
 864         }
 865 }
 866
 867 function showBlockElement(id) {
 868         var elem = document.getElementById(id);
 869
 870         if (elem) {
 871                 elem.style.display = "block";
 872         } else {
 873                 alert("[showBlockElement] can't find element with id " + id);
 874         }
 875 }
 876
 877 function hideParentElement(e) {
 878         e.parentNode.style.display = "none";
 879 }
 880
 881 function dropboxSelect(e, v) {
 882         for (i = 0; i < e.length; i++) {
 883                 if (e[i].value == v) {
 884                         e.selectedIndex = i;
 885                         break;
 886                 }
 887         }
 888 }
 889
 890 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 891 // bugfixed just a little bit :-)
 892 function getURLParam(strParamName){
 893   var strReturn = "";
 894   var strHref = window.location.href;
 895
 896   if (strHref.indexOf("#") == strHref.length-1) {
 897                 strHref = strHref.substring(0, strHref.length-1);
 898   }
 899
 900   if ( strHref.indexOf("?") > -1 ){
 901     var strQueryString = strHref.substr(strHref.indexOf("?"));
 902     var aQueryString = strQueryString.split("&");
 903     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 904       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 905         var aParam = aQueryString[iParam].split("=");
 906         strReturn = aParam[1];
 907         break;
 908       }
 909     }
 910   }
 911   return strReturn;
 912 }
 913
 914 function leading_zero(p) {
 915         var s = String(p);
 916         if (s.length == 1) s = "0" + s;
 917         return s;
 918 }
 919
 920 function center_element(e) {
 921
 922         try {
 923                 var c_width = document.body.clientWidth;
 924                 var c_height = document.body.clientHeight;
 925
 926                 var c_scroll = document.body.scrollTop;
 927
 928                 var e_width = e.clientWidth;
 929                 var e_height = e.clientHeight;
 930
 931                 var set_y = (c_height / 2) + c_scroll - (e_height / 2);
 932                 var set_x = (c_width / 2) - (e_width / 2);
 933
 934                 e.style.top = set_y + "px";
 935                 e.style.left = set_x + "px";
 936         } catch (e) {
 937                 exception_error("center_element", e);
 938         }
 939 }
 940
 941 function closeInfoBox() {
 942         var box = document.getElementById('infoBox');
 943         var shadow = document.getElementById('infoBoxShadow');
 944
 945         if (shadow) {
 946                 shadow.style.display = "none";
 947         } else if (box) {
 948                 box.style.display = "none";
 949         }
 950
 951         enableHotkeys();
 952 }
 953
 954
 955 function displayDlg(id, param) {
 956
 957         if (!xmlhttp_ready(xmlhttp)) {
 958                 printLockingError();
 959                 return
 960         }
 961
 962         notify("");
 963
 964         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
 965                 param_escape(id) + "&param=" + param_escape(param), true);
 966         xmlhttp.onreadystatechange=infobox_callback;
 967         xmlhttp.send(null);
 968
 969         disableHotkeys();
 970
 971 }
 972
 973 function infobox_submit_callback() {
 974         if (xmlhttp.readyState == 4) {
 975                 notify(xmlhttp.responseText);
 976                 closeInfoBox();
 977
 978                 // called from prefs, reload tab
 979                 if (active_tab) {
 980                         selectTab(active_tab, false);
 981                 }
 982         }
 983 }
 984
 985 function infobox_callback() {
 986         if (xmlhttp.readyState == 4) {
 987                 var box = document.getElementById('infoBox');
 988                 var shadow = document.getElementById('infoBoxShadow');
 989                 if (box) {
 990                         box.innerHTML=xmlhttp.responseText;
 991                         if (shadow) {
 992                                 shadow.style.display = "block";
 993                         } else {
 994                                 box.style.display = "block";
 995                         }
 996                 }
 997         }
 998 }
 999
1000 function qaddFilter() {
1001
1002         if (!xmlhttp_ready(xmlhttp)) {
1003                 printLockingError();
1004                 return
1005         }
1006
1007         var regexp = document.getElementById("fadd_regexp");
1008         var match = document.getElementById("fadd_match");
1009         var feed = document.getElementById("fadd_feed");
1010         var action = document.getElementById("fadd_action");
1011
1012         if (regexp.value.length == 0) {
1013                 alert("Missing filter expression.");
1014         } else {
1015                 notify("Adding filter...");
1016
1017                 var v_match = match[match.selectedIndex].text;
1018                 var feed_id = feed[feed.selectedIndex].id;
1019                 var action_id = action[action.selectedIndex].id;
1020
1021                 xmlhttp.open("GET", "backend.php?op=pref-filters&quiet=1&subop=add&regexp=" +
1022                         param_escape(regexp.value) + "&match=" + v_match +
1023                         "&fid=" + param_escape(feed_id) + "&aid=" + param_escape(action_id), true);
1024
1025                 xmlhttp.onreadystatechange=infobox_submit_callback;
1026                 xmlhttp.send(null);
1027
1028                 regexp.value = "";
1029         }
1030
1031 }
1032
1033 function toggleSubmitNotEmpty(e, submit_id) {
1034         try {
1035                 document.getElementById(submit_id).disabled = (e.value == "")
1036         } catch (e) {
1037                 exception_error("toggleSubmitNotEmpty", e);
1038         }
1039 }