functions.js

   1 var hotkeys_enabled = true;
   2
   3 function browser_has_opacity() {
   4         return navigator.userAgent.match("Gecko") != null ||
   5                 navigator.userAgent.match("Opera") != null;
   6 }
   7
   8 function exception_error(location, e) {
   9         var msg;
  10
  11         if (e.fileName) {
  12                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  13
  14                 msg = "Exception: " + e.name + ", " + e.message +
  15                         "\nFunction: " + location + "()" +
  16                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  17
  18         } else {
  19                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  20         }
  21
  22         debug("<b>EXCEPTION: " + msg + "</b>");
  23
  24         alert(msg);
  25 }
  26
  27 function disableHotkeys() {
  28         hotkeys_enabled = false;
  29 }
  30
  31 function enableHotkeys() {
  32         hotkeys_enabled = true;
  33 }
  34
  35 function xmlhttp_ready(obj) {
  36         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  37 }
  38
  39 function notify_callback() {
  40         var container = document.getElementById('notify');
  41         if (xmlhttp.readyState == 4) {
  42                 container.innerHTML=xmlhttp.responseText;
  43         }
  44 }
  45
  46 function rpc_notify_callback() {
  47         var container = document.getElementById('notify');
  48         if (xmlhttp_rpc.readyState == 4) {
  49                 container.innerHTML=xmlhttp_rpc.responseText;
  50         }
  51 }
  52
  53 function param_escape(arg) {
  54         if (typeof encodeURIComponent != 'undefined')
  55                 return encodeURIComponent(arg);
  56         else
  57                 return escape(arg);
  58 }
  59
  60 function param_unescape(arg) {
  61         if (typeof decodeURIComponent != 'undefined')
  62                 return decodeURIComponent(arg);
  63         else
  64                 return unescape(arg);
  65 }
  66
  67 function delay(gap) {
  68         var then,now;
  69         then=new Date().getTime();
  70         now=then;
  71         while((now-then)<gap) {
  72                 now=new Date().getTime();
  73         }
  74 }
  75
  76 var notify_hide_timerid = false;
  77 var notify_last_doc = false;
  78
  79 var notify_effect = false;
  80
  81 function hide_notify() {
  82         if (notify_last_doc) {
  83                 var n = notify_last_doc.getElementById("notify");
  84                 if (browser_has_opacity()) {
  85                         if (notify_opacity >= 0) {
  86                                 notify_opacity = notify_opacity - 0.1;
  87                                 n.style.opacity = notify_opacity;
  88                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
  89                         } else {
  90                                 n.style.display = "none";
  91                                 n.style.opacity = 1;
  92                         }
  93                 } else {
  94                         n.style.display = "none";
  95                 }
  96         }
  97 }
  98
  99 function notify_real(msg, doc, no_hide, is_err) {
 100
 101         var n = doc.getElementById("notify");
 102         var nb = doc.getElementById("notify_body");
 103
 104         if (!n || !nb) return;
 105
 106         if (notify_hide_timerid) {
 107                 window.clearTimeout(notify_hide_timerid);
 108         }
 109
 110         notify_last_doc = doc;
 111         notify_opacity = 1;
 112
 113         if (msg == "") {
 114                 if (n.style.display == "block") {
 115                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 116                 }
 117                 return;
 118         } else {
 119                 n.style.display = "block";
 120         }
 121
 122         if (is_err) {
 123                 n.style.backgroundColor = "#ffcccc";
 124                 n.style.color = "black";
 125                 n.style.borderColor = "#ff0000";
 126         } else {
 127                 n.style.backgroundColor = "#fff7d5";
 128                 n.style.borderColor = "#d7c47a";
 129                 n.style.color = "black";
 130         }
 131
 132         nb.innerHTML = msg;
 133
 134         if (!no_hide) {
 135                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 136         }
 137 }
 138
 139 function p_notify(msg, no_hide, is_err) {
 140         notify_real(msg, parent.document, no_hide, is_err);
 141 }
 142
 143 function notify(msg, no_hide, is_err) {
 144         notify_real(msg, document, no_hide, is_err);
 145 }
 146
 147 function printLockingError() {
 148         notify("Please wait until operation finishes");}
 149
 150 var seq = "";
 151
 152 function hotkey_handler(e) {
 153
 154         try {
 155
 156                 var keycode;
 157
 158                 if (!hotkeys_enabled) return;
 159
 160                 if (window.event) {
 161                         keycode = window.event.keyCode;
 162                 } else if (e) {
 163                         keycode = e.which;
 164                 }
 165
 166                 if (keycode == 13 || keycode == 27) {
 167                         seq = "";
 168                 } else {
 169                         seq = seq + "" + keycode;
 170                 }
 171
 172                 var m_ctx = getMainContext();
 173                 var f_ctx = getFeedsContext();
 174                 var h_ctx = getHeadlinesContext();
 175
 176                 if (keycode == 82) { // r
 177                         return m_ctx.scheduleFeedUpdate(true);
 178                 }
 179
 180                 if (keycode == 85) { // u
 181                         if (getActiveFeedId()) {
 182                                 return f_ctx.viewfeed(getActiveFeedId(), 0, "ForceUpdate");
 183                         }
 184                 }
 185
 186                 if (keycode == 65) { // a
 187                         return m_ctx.toggleDispRead();
 188                 }
 189
 190                 var f_doc = m_ctx.frames["feeds-frame"].document;
 191                 var feedlist = f_doc.getElementById('feedList');
 192
 193                 if (keycode == 74) { // j
 194                         var feed = getActiveFeedId();
 195                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 196                         if (new_feed) viewfeed(new_feed, 0, '');
 197                 }
 198
 199                 if (keycode == 75) { // k
 200                         var feed = getActiveFeedId();
 201                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 202                         if (new_feed) viewfeed(new_feed, 0, '');
 203                 }
 204
 205                 if (keycode == 78 || keycode == 40) { // n, down
 206                         return h_ctx.moveToPost('next');
 207                 }
 208
 209                 if (keycode == 80 || keycode == 38) { // p, up
 210                         return h_ctx.moveToPost('prev');
 211                 }
 212
 213                 if (document.getElementById("piggie")) {
 214
 215                         if (seq.match("807371717369")) {
 216                                 seq = "";
 217                                 localPiggieFunction(true);
 218                         } else {
 219                                 localPiggieFunction(false);
 220                         }
 221                 }
 222
 223                 if (typeof localHotkeyHandler != 'undefined') {
 224                         try {
 225                                 localHotkeyHandler(keycode);
 226                         } catch (e) {
 227                                 exception_error("hotkey_handler, local:", e);
 228                         }
 229                 }
 230         } catch (e) {
 231                 exception_error("hotkey_handler", e);
 232         }
 233 }
 234
 235 function cleanSelectedList(element) {
 236         var content = document.getElementById(element);
 237
 238         if (!document.getElementById("feedCatHolder")) {
 239                 for (i = 0; i < content.childNodes.length; i++) {
 240                         var child = content.childNodes[i];
 241                         try {
 242                                 child.className = child.className.replace("Selected", "");
 243                         } catch (e) {
 244                                 //
 245                         }
 246                 }
 247         } else {
 248                 for (i = 0; i < content.childNodes.length; i++) {
 249                         var child = content.childNodes[i];
 250                         if (child.id == "feedCatHolder") {
 251                                 parent.debug(child.id);
 252                                 var fcat = child.lastChild;
 253                                 for (j = 0; j < fcat.childNodes.length; j++) {
 254                                         var feed = fcat.childNodes[j];
 255                                         feed.className = feed.className.replace("Selected", "");
 256                                 }
 257                         }
 258                 }
 259         }
 260 }
 261
 262
 263 function cleanSelected(element) {
 264         var content = document.getElementById(element);
 265
 266         for (i = 0; i < content.rows.length; i++) {
 267                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 268         }
 269 }
 270
 271 function getVisibleUnreadHeadlines() {
 272         var content = document.getElementById("headlinesList");
 273
 274         var rows = new Array();
 275
 276         for (i = 0; i < content.rows.length; i++) {
 277                 var row_id = content.rows[i].id.replace("RROW-", "");
 278                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 279                                 rows.push(row_id);
 280                 }
 281         }
 282         return rows;
 283 }
 284
 285 function getVisibleHeadlineIds() {
 286
 287         var content = document.getElementById("headlinesList");
 288
 289         var rows = new Array();
 290
 291         for (i = 0; i < content.rows.length; i++) {
 292                 var row_id = content.rows[i].id.replace("RROW-", "");
 293                 if (row_id.length > 0) {
 294                                 rows.push(row_id);
 295                 }
 296         }
 297         return rows;
 298 }
 299
 300 function getFirstVisibleHeadlineId() {
 301         var rows = getVisibleHeadlineIds();
 302         return rows[0];
 303 }
 304
 305 function getLastVisibleHeadlineId() {
 306         var rows = getVisibleHeadlineIds();
 307         return rows[rows.length-1];
 308 }
 309
 310 function markHeadline(id) {
 311         var row = document.getElementById("RROW-" + id);
 312         if (row) {
 313                 var is_active = false;
 314
 315                 if (row.className.match("Active")) {
 316                         is_active = true;
 317                 }
 318                 row.className = row.className.replace("Selected", "");
 319                 row.className = row.className.replace("Active", "");
 320                 row.className = row.className.replace("Insensitive", "");
 321
 322                 if (is_active) {
 323                         row.className = row.className = "Active";
 324                 }
 325
 326                 var check = document.getElementById("RCHK-" + id);
 327
 328                 if (check) {
 329                         check.checked = true;
 330                 }
 331
 332                 row.className = row.className + "Selected";
 333
 334         }
 335 }
 336
 337 function getFeedIds() {
 338         var content = document.getElementById("feedsList");
 339
 340         var rows = new Array();
 341
 342         for (i = 0; i < content.rows.length; i++) {
 343                 var id = content.rows[i].id.replace("FEEDR-", "");
 344                 if (id.length > 0) {
 345                         rows.push(id);
 346                 }
 347         }
 348
 349         return rows;
 350 }
 351
 352 function setCookie(name, value, lifetime, path, domain, secure) {
 353
 354         var d = false;
 355
 356         if (lifetime) {
 357                 d = new Date();
 358                 d.setTime(lifetime * 1000);
 359         }
 360
 361         int_setCookie(name, value, d, path, domain, secure);
 362
 363 }
 364
 365 function int_setCookie(name, value, expires, path, domain, secure) {
 366         document.cookie= name + "=" + escape(value) +
 367                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 368                 ((path) ? "; path=" + path : "") +
 369                 ((domain) ? "; domain=" + domain : "") +
 370                 ((secure) ? "; secure" : "");
 371 }
 372
 373 function delCookie(name, path, domain) {
 374         if (getCookie(name)) {
 375                 document.cookie = name + "=" +
 376                 ((path) ? ";path=" + path : "") +
 377                 ((domain) ? ";domain=" + domain : "" ) +
 378                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 379         }
 380 }
 381
 382
 383 function getCookie(name) {
 384
 385         var dc = document.cookie;
 386         var prefix = name + "=";
 387         var begin = dc.indexOf("; " + prefix);
 388         if (begin == -1) {
 389             begin = dc.indexOf(prefix);
 390             if (begin != 0) return null;
 391         }
 392         else {
 393             begin += 2;
 394         }
 395         var end = document.cookie.indexOf(";", begin);
 396         if (end == -1) {
 397             end = dc.length;
 398         }
 399         return unescape(dc.substring(begin + prefix.length, end));
 400 }
 401
 402 function disableContainerChildren(id, disable, doc) {
 403
 404         if (!doc) doc = document;
 405
 406         var container = doc.getElementById(id);
 407
 408         if (!container) {
 409                 //alert("disableContainerChildren: element " + id + " not found");
 410                 return;
 411         }
 412
 413         for (var i = 0; i < container.childNodes.length; i++) {
 414                 var child = container.childNodes[i];
 415
 416                 try {
 417                         child.disabled = disable;
 418                 } catch (E) {
 419
 420                 }
 421
 422                 if (disable) {
 423                         if (child.className && child.className.match("button")) {
 424                                 child.className = "disabledButton";
 425                         }
 426                 } else {
 427                         if (child.className && child.className.match("disabledButton")) {
 428                                 child.className = "button";
 429                         }
 430                 }
 431         }
 432
 433 }
 434
 435 function gotoPreferences() {
 436         document.location.href = "prefs.php";
 437 }
 438
 439 function gotoMain() {
 440         document.location.href = "tt-rss.php";
 441 }
 442
 443 function gotoExportOpml() {
 444         document.location.href = "opml.php?op=Export";
 445 }
 446
 447 function getActiveFeedId() {
 448 //      return getCookie("ttrss_vf_actfeed");
 449         try {
 450                 debug("gAFID: " + getMainContext().active_feed_id);
 451                 return getMainContext().active_feed_id;
 452         } catch (e) {
 453                 exception_error("getActiveFeedId", e);
 454         }
 455 }
 456
 457 function setActiveFeedId(id) {
 458 //      return setCookie("ttrss_vf_actfeed", id);
 459         try {
 460                 getMainContext().active_feed_id = id;
 461         } catch (e) {
 462                 exception_error("setActiveFeedId", e);
 463         }
 464 }
 465
 466 var xmlhttp_rpc = Ajax.getTransport();
 467
 468 function parse_counters(reply, scheduled_call) {
 469         try {
 470                 var f_document = getFeedsContext().document;
 471                 var title_obj = getMainContext();
 472
 473                 debug("F_DOC: " + f_document + ", T_OBJ: " + title_obj);
 474
 475                 for (var l = 0; l < reply.childNodes.length; l++) {
 476                         if (!reply.childNodes[l] ||
 477                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 478                                 // where did this come from?
 479                                 continue;
 480                         }
 481
 482                         var id = reply.childNodes[l].getAttribute("id");
 483                         var t = reply.childNodes[l].getAttribute("type");
 484                         var ctr = reply.childNodes[l].getAttribute("counter");
 485                         var error = reply.childNodes[l].getAttribute("error");
 486                         var has_img = reply.childNodes[l].getAttribute("hi");
 487                         var updated = reply.childNodes[l].getAttribute("updated");
 488
 489                         if (id == "global-unread") {
 490                                 title_obj.global_unread = ctr;
 491                                 title_obj.updateTitle();
 492                                 continue;
 493                         }
 494
 495                         if (t == "category") {
 496                                 var catctr = f_document.getElementById("FCATCTR-" + id);
 497                                 if (catctr) {
 498                                         catctr.innerHTML = "(" + ctr + " unread)";
 499                                 }
 500                                 continue;
 501                         }
 502
 503                         var feedctr = f_document.getElementById("FEEDCTR-" + id);
 504                         var feedu = f_document.getElementById("FEEDU-" + id);
 505                         var feedr = f_document.getElementById("FEEDR-" + id);
 506                         var feed_img = f_document.getElementById("FIMG-" + id);
 507                         var feedlink = f_document.getElementById("FEEDL-" + id);
 508
 509                         if (updated && feedlink) {
 510                                 if (error) {
 511                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 512                                 } else {
 513                                         feedlink.title = "Updated: " + updated;
 514                                 }
 515                         }
 516
 517                         if (feedctr && feedu && feedr) {
 518
 519                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 520                                         var hf = title_obj.parent.frames["headlines-frame"];
 521                                         hf.location.reload(true);
 522                                 }
 523
 524                                 feedu.innerHTML = ctr;
 525
 526                                 if (error) {
 527                                         feedr.className = feedr.className.replace("feed", "error");
 528                                 } else if (id > 0) {
 529                                         feedr.className = feedr.className.replace("error", "feed");
 530                                 }
 531
 532                                 if (ctr > 0) {
 533                                         feedctr.className = "odd";
 534                                         if (!feedr.className.match("Unread")) {
 535                                                 var is_selected = feedr.className.match("Selected");
 536
 537                                                 feedr.className = feedr.className.replace("Selected", "");
 538                                                 feedr.className = feedr.className.replace("Unread", "");
 539
 540                                                 feedr.className = feedr.className + "Unread";
 541
 542                                                 if (is_selected) {
 543                                                         feedr.className = feedr.className + "Selected";
 544                                                 }
 545
 546                                         }
 547                                 } else {
 548                                         feedctr.className = "invisible";
 549                                         feedr.className = feedr.className.replace("Unread", "");
 550                                 }
 551                         }
 552                 }
 553         } catch (e) {
 554                 exception_error("parse_counters", e);
 555         }
 556 }
 557
 558 function all_counters_callback() {
 559         if (xmlhttp_rpc.readyState == 4) {
 560                 try {
 561                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 562                                 notify("[all_counters_callback] backend did not return valid XML");
 563                                 return;
 564                         }
 565
 566                         var reply = xmlhttp_rpc.responseXML.firstChild;
 567
 568                         parse_counters(reply);
 569
 570                 } catch (e) {
 571                         exception_error("all_counters_callback", e);
 572                 }
 573         }
 574 }
 575
 576 function update_all_counters(feed) {
 577         if (xmlhttp_ready(xmlhttp_rpc)) {
 578                 var query = "backend.php?op=rpc&subop=getAllCounters";
 579
 580                 if (feed > 0) {
 581                         query = query + "&aid=" + feed;
 582                 }
 583
 584                 xmlhttp_rpc.open("GET", query, true);
 585                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 586                 xmlhttp_rpc.send(null);
 587         }
 588 }
 589
 590 function popupHelp(tid) {
 591         var w = window.open("backend.php?op=help&tid=" + tid,
 592                 "Popup Help",
 593                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 594 }
 595
 596 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 597   * * @author Sundar Dorai-Raj
 598   * * Email: sdoraira@vt.edu
 599   * * This program is free software; you can redistribute it and/or
 600   * * modify it under the terms of the GNU General Public License
 601   * * as published by the Free Software Foundation; either version 2
 602   * * of the License, or (at your option) any later version,
 603   * * provided that any use properly credits the author.
 604   * * This program is distributed in the hope that it will be useful,
 605   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 606   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 607   * * GNU General Public License for more details at http://www.gnu.org * * */
 608
 609   var numbers=".0123456789";
 610   function isNumeric(x) {
 611     // is x a String or a character?
 612     if(x.length>1) {
 613       // remove negative sign
 614       x=Math.abs(x)+"";
 615       for(j=0;j<x.length;j++) {
 616         // call isNumeric recursively for each character
 617         number=isNumeric(x.substring(j,j+1));
 618         if(!number) return number;
 619       }
 620       return number;
 621     }
 622     else {
 623       // if x is number return true
 624       if(numbers.indexOf(x)>=0) return true;
 625       return false;
 626     }
 627   }
 628
 629
 630 function hideOrShowFeeds(doc, hide) {
 631
 632         if (!doc.styleSheets) return;
 633
 634         var css_rules = doc.styleSheets[0].cssRules;
 635
 636         if (!css_rules || !css_rules.length) return;
 637
 638         for (i = 0; i < css_rules.length; i++) {
 639                 var rule = css_rules[i];
 640
 641                 if (rule.selectorText == "ul.feedList li.feed") {
 642                         if (!hide) {
 643                                 rule.style.display = "block";
 644                         } else {
 645                                 rule.style.display = "none";
 646                         }
 647                 }
 648
 649         }
 650
 651 }
 652
 653 function selectTableRow(r, do_select) {
 654         r.className = r.className.replace("Selected", "");
 655
 656         if (do_select) {
 657                 r.className = r.className + "Selected";
 658         }
 659 }
 660
 661 function selectTableRowById(elem_id, check_id, do_select) {
 662
 663         try {
 664
 665                 var row = document.getElementById(elem_id);
 666
 667                 if (row) {
 668                         selectTableRow(row, do_select);
 669                 }
 670
 671                 var check = document.getElementById(check_id);
 672
 673                 if (check) {
 674                         check.checked = do_select;
 675                 }
 676         } catch (e) {
 677                 exception_error("selectTableRowById", e);
 678         }
 679 }
 680
 681 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 682         classcheck, reset_others) {
 683
 684         var content = document.getElementById(content_id);
 685
 686         if (!content) {
 687                 alert("[selectTableRows] Element " + content_id + " not found.");
 688                 return;
 689         }
 690
 691         for (i = 0; i < content.rows.length; i++) {
 692                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 693
 694                         if (content.rows[i].id.match(prefix)) {
 695                                 selectTableRow(content.rows[i], do_select);
 696
 697                                 var row_id = content.rows[i].id.replace(prefix, "");
 698                                 var check = document.getElementById(check_prefix + row_id);
 699
 700                                 if (check) {
 701                                         check.checked = do_select;
 702                                 }
 703                         } else if (reset_others) {
 704                                 selectTableRow(content.rows[i], false);
 705
 706                                 var row_id = content.rows[i].id.replace(prefix, "");
 707                                 var check = document.getElementById(check_prefix + row_id);
 708
 709                                 if (check) {
 710                                         check.checked = false;
 711                                 }
 712
 713                         }
 714                 } else if (reset_others) {
 715                         selectTableRow(content.rows[i], false);
 716
 717                         var row_id = content.rows[i].id.replace(prefix, "");
 718                         var check = document.getElementById(check_prefix + row_id);
 719
 720                         if (check) {
 721                                 check.checked = false;
 722                         }
 723
 724                 }
 725         }
 726 }
 727
 728 function getSelectedTableRowIds(content_id, prefix) {
 729
 730         var content = document.getElementById(content_id);
 731
 732         if (!content) {
 733                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 734                 return;
 735         }
 736
 737         var sel_rows = new Array();
 738
 739         for (i = 0; i < content.rows.length; i++) {
 740                 if (content.rows[i].id.match(prefix) &&
 741                                 content.rows[i].className.match("Selected")) {
 742
 743                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 744                         sel_rows.push(row_id);
 745                 }
 746         }
 747
 748         return sel_rows;
 749
 750 }
 751
 752 function toggleSelectRowById(sender, id) {
 753         var row = document.getElementById(id);
 754
 755         if (sender.checked) {
 756                 if (!row.className.match("Selected")) {
 757                         row.className = row.className + "Selected";
 758                 }
 759         } else {
 760                 if (row.className.match("Selected")) {
 761                         row.className = row.className.replace("Selected", "");
 762                 }
 763         }
 764 }
 765
 766 function toggleSelectListRow(sender) {
 767         var parent_row = sender.parentNode;
 768
 769         if (sender.checked) {
 770                 if (!parent_row.className.match("Selected")) {
 771                         parent_row.className = parent_row.className + "Selected";
 772                 }
 773         } else {
 774                 if (parent_row.className.match("Selected")) {
 775                         parent_row.className = parent_row.className.replace("Selected", "");
 776                 }
 777         }
 778 }
 779
 780
 781 function toggleSelectRow(sender) {
 782         var parent_row = sender.parentNode.parentNode;
 783
 784         if (sender.checked) {
 785                 if (!parent_row.className.match("Selected")) {
 786                         parent_row.className = parent_row.className + "Selected";
 787                 }
 788         } else {
 789                 if (parent_row.className.match("Selected")) {
 790                         parent_row.className = parent_row.className.replace("Selected", "");
 791                 }
 792         }
 793 }
 794
 795 function openExternalUrl(url) {
 796         var w = window.open(url);
 797 }
 798
 799 function getRelativeFeedId(list, id, direction, unread_only) {
 800         if (!id) {
 801                 if (direction == "next") {
 802                         for (i = 0; i < list.childNodes.length; i++) {
 803                                 var child = list.childNodes[i];
 804                                 if (child.id && child.id == "feedCatHolder") {
 805                                         if (child.lastChild) {
 806                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 807                                                 if (cr) return cr;
 808                                         }
 809                                 } else if (child.id && child.id.match("FEEDR-")) {
 810                                         return child.id.replace('FEEDR-', '');
 811                                 }
 812                         }
 813                 }
 814
 815                 // FIXME select last feed doesn't work when only unread feeds are visible
 816
 817                 if (direction == "prev") {
 818                         for (i = list.childNodes.length-1; i >= 0; i--) {
 819                                 var child = list.childNodes[i];
 820                                 if (child.id == "feedCatHolder") {
 821                                         if (child.firstChild) {
 822                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 823                                                 if (cr) return cr;
 824                                         }
 825                                 } else if (child.id.match("FEEDR-")) {
 826
 827                                         if (getInitParam("hide_read_feeds") == 1) {
 828                                                 if (child.className != "feed") {
 829                                                         alert(child.className);
 830                                                         return child.id.replace('FEEDR-', '');
 831                                                 }
 832                                         } else {
 833                                                         return child.id.replace('FEEDR-', '');
 834                                         }
 835                                 }
 836                         }
 837                 }
 838         } else {
 839
 840                 var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
 841
 842                 if (getInitParam("hide_read_feeds") == 1) {
 843                         unread_only = true;
 844                 }
 845
 846                 if (direction == "next") {
 847
 848                         var e = feed;
 849
 850                         while (e) {
 851
 852                                 if (e.nextSibling) {
 853
 854                                         e = e.nextSibling;
 855
 856                                 } else if (e.parentNode.parentNode.nextSibling) {
 857
 858                                         var this_cat = e.parentNode.parentNode;
 859
 860                                         e = false;
 861
 862                                         if (this_cat && this_cat.nextSibling) {
 863                                                 while (!e && this_cat.nextSibling) {
 864                                                         this_cat = this_cat.nextSibling;
 865                                                         if (this_cat.id == "feedCatHolder") {
 866                                                                 e = this_cat.firstChild.firstChild;
 867                                                         }
 868                                                 }
 869                                         }
 870
 871                                 } else {
 872                                         e = false;
 873                            }
 874
 875                                 if (e) {
 876                                         if (!unread_only || (unread_only && e.className != "feed" &&
 877                                                         e.className != "error"))        {
 878                                                 return e.id.replace("FEEDR-", "");
 879                                         }
 880                                 }
 881                         }
 882
 883                 } else if (direction == "prev") {
 884
 885                         var e = feed;
 886
 887                         while (e) {
 888
 889                                 if (e.previousSibling) {
 890
 891                                         e = e.previousSibling;
 892
 893                                 } else if (e.parentNode.parentNode.previousSibling) {
 894
 895                                         var this_cat = e.parentNode.parentNode;
 896
 897                                         e = false;
 898
 899                                         if (this_cat && this_cat.previousSibling) {
 900                                                 while (!e && this_cat.previousSibling) {
 901                                                         this_cat = this_cat.previousSibling;
 902                                                         if (this_cat.id == "feedCatHolder") {
 903                                                                 e = this_cat.firstChild.lastChild;
 904                                                         }
 905                                                 }
 906                                         }
 907
 908                                 } else {
 909                                         e = false;
 910                            }
 911
 912                                 if (e) {
 913                                         if (!unread_only || (unread_only && e.className != "feed" &&
 914                                                         e.className != "error"))        {
 915                                                 return e.id.replace("FEEDR-", "");
 916                                         }
 917                                 }
 918                         }
 919                 }
 920         }
 921 }
 922
 923 function showBlockElement(id) {
 924         var elem = document.getElementById(id);
 925
 926         if (elem) {
 927                 elem.style.display = "block";
 928         } else {
 929                 alert("[showBlockElement] can't find element with id " + id);
 930         }
 931 }
 932
 933 function hideParentElement(e) {
 934         e.parentNode.style.display = "none";
 935 }
 936
 937 function dropboxSelect(e, v) {
 938         for (i = 0; i < e.length; i++) {
 939                 if (e[i].value == v) {
 940                         e.selectedIndex = i;
 941                         break;
 942                 }
 943         }
 944 }
 945
 946 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 947 // bugfixed just a little bit :-)
 948 function getURLParam(strParamName){
 949   var strReturn = "";
 950   var strHref = window.location.href;
 951
 952   if (strHref.indexOf("#") == strHref.length-1) {
 953                 strHref = strHref.substring(0, strHref.length-1);
 954   }
 955
 956   if ( strHref.indexOf("?") > -1 ){
 957     var strQueryString = strHref.substr(strHref.indexOf("?"));
 958     var aQueryString = strQueryString.split("&");
 959     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 960       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 961         var aParam = aQueryString[iParam].split("=");
 962         strReturn = aParam[1];
 963         break;
 964       }
 965     }
 966   }
 967   return strReturn;
 968 }
 969
 970 function leading_zero(p) {
 971         var s = String(p);
 972         if (s.length == 1) s = "0" + s;
 973         return s;
 974 }
 975
 976 function closeInfoBox(cleanup) {
 977         var box = document.getElementById('infoBox');
 978         var shadow = document.getElementById('infoBoxShadow');
 979
 980         if (shadow) {
 981                 shadow.style.display = "none";
 982         } else if (box) {
 983                 box.style.display = "none";
 984         }
 985
 986         if (cleanup) box.innerHTML = "&nbsp;";
 987
 988         enableHotkeys();
 989
 990 }
 991
 992
 993 function displayDlg(id, param) {
 994
 995         if (!xmlhttp_ready(xmlhttp)) {
 996                 printLockingError();
 997                 return
 998         }
 999
1000         notify("");
1001
1002         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1003                 param_escape(id) + "&param=" + param_escape(param), true);
1004         xmlhttp.onreadystatechange=infobox_callback;
1005         xmlhttp.send(null);
1006
1007         disableHotkeys();
1008
1009 }
1010
1011 function infobox_submit_callback() {
1012         if (xmlhttp.readyState == 4) {
1013                 closeInfoBox();
1014
1015                 // called from prefs, reload tab
1016                 if (active_tab) {
1017                         selectTab(active_tab, false);
1018                 }
1019
1020                 notify(xmlhttp.responseText);
1021
1022         }
1023 }
1024
1025 function infobox_callback() {
1026         if (xmlhttp.readyState == 4) {
1027                 var box = document.getElementById('infoBox');
1028                 var shadow = document.getElementById('infoBoxShadow');
1029                 if (box) {
1030                         box.innerHTML=xmlhttp.responseText;
1031                         if (shadow) {
1032                                 shadow.style.display = "block";
1033                         } else {
1034                                 box.style.display = "block";
1035                         }
1036                 }
1037         }
1038 }
1039
1040 function qaddFilter() {
1041
1042         if (!xmlhttp_ready(xmlhttp)) {
1043                 printLockingError();
1044                 return
1045         }
1046
1047         var query = Form.serialize("filter_add_form");
1048
1049         xmlhttp.open("GET", "backend.php?" + query, true);
1050         xmlhttp.onreadystatechange=infobox_submit_callback;
1051         xmlhttp.send(null);
1052
1053         return true;
1054 }
1055
1056 function toggleSubmitNotEmpty(e, submit_id) {
1057         try {
1058                 document.getElementById(submit_id).disabled = (e.value == "")
1059         } catch (e) {
1060                 exception_error("toggleSubmitNotEmpty", e);
1061         }
1062 }
1063
1064 function isValidURL(s) {
1065         return s.match("http://") != null || s.match("https://") != null;
1066 }
1067
1068 function qafAdd() {
1069
1070         if (!xmlhttp_ready(xmlhttp)) {
1071                 printLockingError();
1072                 return
1073         }
1074
1075         notify("Adding feed...");
1076
1077         closeInfoBox();
1078
1079         var feeds_doc = getFeedsContext().document;
1080
1081         feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1082
1083         var query = Form.serialize("feed_add_form");
1084
1085         xmlhttp.open("GET", "backend.php?" + query, true);
1086         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1087         xmlhttp.send(null);
1088 }
1089
1090 function filterCR(e)
1091 {
1092      var key;
1093
1094      if(window.event)
1095           key = window.event.keyCode;     //IE
1096      else
1097           key = e.which;     //firefox
1098
1099      if(key == 13)
1100           return false;
1101      else
1102           return true;
1103 }
1104
1105 function getMainContext() {
1106         if (parent.window != window) {
1107                 return parent.window;
1108         } else {
1109                 return this.window;
1110         }
1111 }
1112
1113 function getFeedsContext() {
1114         try {
1115                 return getMainContext().frames["feeds-frame"];
1116         } catch (e) {
1117                 exception_error("getFeedsContext", e);
1118         }
1119 }
1120
1121
1122 function getHeadlinesContext() {
1123         try {
1124                 return getMainContext().frames["headlines-frame"];
1125         } catch (e) {
1126                 exception_error("getHeadlinesContext", e);
1127         }
1128 }
1129
1130 function debug(msg) {
1131         var ctx = getMainContext();
1132
1133         var c = ctx.document.getElementById('debug_output');
1134         if (c && c.style.display == "block") {
1135                 while (c.lastChild != 'undefined' && c.childNodes.length > 20) {
1136                         c.removeChild(c.lastChild);
1137                 }
1138
1139                 var d = new Date();
1140                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1141                         ":" + leading_zero(d.getSeconds());
1142                 c.innerHTML = "<li>[" + ts + "] " + msg + "</li>" + c.innerHTML;
1143         }
1144 }
1145
1146 function getInitParam(key) {
1147         return getMainContext().init_params[key];
1148 }
1149
1150 // TODO: batch mode
1151 function storeInitParam(key, value, is_client) {
1152         try {
1153                 getMainContext().init_params[key] = value;
1154                 if (!is_client) {
1155                         new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1156                                 param_escape(key) + "&value=" + param_escape(value));
1157                 }
1158         } catch (e) {
1159                 exception_error("storeInitParam", e);
1160         }
1161 }