functions.js

   1 var hotkeys_enabled = true;
   2
   3 var xmlhttp_rpc = Ajax.getTransport();
   4
   5 function browser_has_opacity() {
   6         return navigator.userAgent.match("Gecko") != null ||
   7                 navigator.userAgent.match("Opera") != null;
   8 }
   9
  10 function exception_error(location, e) {
  11         var msg;
  12
  13         if (e.fileName) {
  14                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  15
  16                 msg = "Exception: " + e.name + ", " + e.message +
  17                         "\nFunction: " + location + "()" +
  18                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  19
  20         } else {
  21                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  22         }
  23
  24         debug("<b>EXCEPTION: " + msg + "</b>");
  25
  26         alert(msg);
  27 }
  28
  29 function disableHotkeys() {
  30         hotkeys_enabled = false;
  31 }
  32
  33 function enableHotkeys() {
  34         hotkeys_enabled = true;
  35 }
  36
  37 function xmlhttp_ready(obj) {
  38         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  39 }
  40
  41 function notify_callback() {
  42         var container = document.getElementById('notify');
  43         if (xmlhttp.readyState == 4) {
  44                 container.innerHTML=xmlhttp.responseText;
  45         }
  46 }
  47
  48 function rpc_notify_callback() {
  49         var container = document.getElementById('notify');
  50         if (xmlhttp_rpc.readyState == 4) {
  51                 container.innerHTML=xmlhttp_rpc.responseText;
  52         }
  53 }
  54
  55 function param_escape(arg) {
  56         if (typeof encodeURIComponent != 'undefined')
  57                 return encodeURIComponent(arg);
  58         else
  59                 return escape(arg);
  60 }
  61
  62 function param_unescape(arg) {
  63         if (typeof decodeURIComponent != 'undefined')
  64                 return decodeURIComponent(arg);
  65         else
  66                 return unescape(arg);
  67 }
  68
  69 function delay(gap) {
  70         var then,now;
  71         then=new Date().getTime();
  72         now=then;
  73         while((now-then)<gap) {
  74                 now=new Date().getTime();
  75         }
  76 }
  77
  78 var notify_hide_timerid = false;
  79 var notify_last_doc = false;
  80
  81 var notify_effect = false;
  82
  83 function hide_notify() {
  84         if (notify_last_doc) {
  85                 var n = notify_last_doc.getElementById("notify");
  86                 if (browser_has_opacity()) {
  87                         if (notify_opacity >= 0) {
  88                                 notify_opacity = notify_opacity - 0.1;
  89                                 n.style.opacity = notify_opacity;
  90                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
  91                         } else {
  92                                 n.style.display = "none";
  93                                 n.style.opacity = 1;
  94                         }
  95                 } else {
  96                         n.style.display = "none";
  97                 }
  98         }
  99 }
 100
 101 function notify_real(msg, doc, no_hide, is_err) {
 102
 103         var n = doc.getElementById("notify");
 104         var nb = doc.getElementById("notify_body");
 105
 106         if (!n || !nb) return;
 107
 108         if (notify_hide_timerid) {
 109                 window.clearTimeout(notify_hide_timerid);
 110         }
 111
 112         notify_last_doc = doc;
 113         notify_opacity = 1;
 114
 115         if (msg == "") {
 116                 if (n.style.display == "block") {
 117                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 118                 }
 119                 return;
 120         } else {
 121                 n.style.display = "block";
 122         }
 123
 124         if (is_err) {
 125                 n.style.backgroundColor = "#ffcccc";
 126                 n.style.color = "black";
 127                 n.style.borderColor = "#ff0000";
 128         } else {
 129                 n.style.backgroundColor = "#fff7d5";
 130                 n.style.borderColor = "#d7c47a";
 131                 n.style.color = "black";
 132         }
 133
 134         nb.innerHTML = msg;
 135
 136         if (!no_hide) {
 137                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 138         }
 139 }
 140
 141 function p_notify(msg, no_hide, is_err) {
 142         notify_real(msg, parent.document, no_hide, is_err);
 143 }
 144
 145 function notify(msg, no_hide, is_err) {
 146         notify_real(msg, document, no_hide, is_err);
 147 }
 148
 149 function printLockingError() {
 150         notify("Please wait until operation finishes");}
 151
 152 var seq = "";
 153
 154 function hotkey_handler(e) {
 155
 156         try {
 157
 158                 var keycode;
 159
 160                 if (!hotkeys_enabled) return;
 161
 162                 if (window.event) {
 163                         keycode = window.event.keyCode;
 164                 } else if (e) {
 165                         keycode = e.which;
 166                 }
 167
 168                 if (keycode == 13 || keycode == 27) {
 169                         seq = "";
 170                 } else {
 171                         seq = seq + "" + keycode;
 172                 }
 173
 174                 var m_ctx = getMainContext();
 175                 var f_ctx = getFeedsContext();
 176                 var h_ctx = getHeadlinesContext();
 177
 178                 if (keycode == 82) { // r
 179                         return m_ctx.scheduleFeedUpdate(true);
 180                 }
 181
 182                 if (keycode == 85) { // u
 183                         if (getActiveFeedId()) {
 184                                 return f_ctx.viewfeed(getActiveFeedId(), 0, "ForceUpdate");
 185                         }
 186                 }
 187
 188                 if (keycode == 65) { // a
 189                         return m_ctx.toggleDispRead();
 190                 }
 191
 192                 var f_doc = m_ctx.frames["feeds-frame"].document;
 193                 var feedlist = f_doc.getElementById('feedList');
 194
 195                 if (keycode == 74) { // j
 196                         var feed = getActiveFeedId();
 197                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 198                         if (new_feed) viewfeed(new_feed, 0, '');
 199                 }
 200
 201                 if (keycode == 75) { // k
 202                         var feed = getActiveFeedId();
 203                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 204                         if (new_feed) viewfeed(new_feed, 0, '');
 205                 }
 206
 207                 if (keycode == 78 || keycode == 40) { // n, down
 208                         return h_ctx.moveToPost('next');
 209                 }
 210
 211                 if (keycode == 80 || keycode == 38) { // p, up
 212                         return h_ctx.moveToPost('prev');
 213                 }
 214
 215                 if (document.getElementById("piggie")) {
 216
 217                         if (seq.match("807371717369")) {
 218                                 seq = "";
 219                                 localPiggieFunction(true);
 220                         } else {
 221                                 localPiggieFunction(false);
 222                         }
 223                 }
 224
 225                 if (typeof localHotkeyHandler != 'undefined') {
 226                         try {
 227                                 localHotkeyHandler(keycode);
 228                         } catch (e) {
 229                                 exception_error("hotkey_handler, local:", e);
 230                         }
 231                 }
 232         } catch (e) {
 233                 exception_error("hotkey_handler", e);
 234         }
 235 }
 236
 237 function cleanSelectedList(element) {
 238         var content = document.getElementById(element);
 239
 240         if (!document.getElementById("feedCatHolder")) {
 241                 for (i = 0; i < content.childNodes.length; i++) {
 242                         var child = content.childNodes[i];
 243                         try {
 244                                 child.className = child.className.replace("Selected", "");
 245                         } catch (e) {
 246                                 //
 247                         }
 248                 }
 249         } else {
 250                 for (i = 0; i < content.childNodes.length; i++) {
 251                         var child = content.childNodes[i];
 252                         if (child.id == "feedCatHolder") {
 253                                 parent.debug(child.id);
 254                                 var fcat = child.lastChild;
 255                                 for (j = 0; j < fcat.childNodes.length; j++) {
 256                                         var feed = fcat.childNodes[j];
 257                                         feed.className = feed.className.replace("Selected", "");
 258                                 }
 259                         }
 260                 }
 261         }
 262 }
 263
 264
 265 function cleanSelected(element) {
 266         var content = document.getElementById(element);
 267
 268         for (i = 0; i < content.rows.length; i++) {
 269                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 270         }
 271 }
 272
 273 function getVisibleUnreadHeadlines() {
 274         var content = document.getElementById("headlinesList");
 275
 276         var rows = new Array();
 277
 278         for (i = 0; i < content.rows.length; i++) {
 279                 var row_id = content.rows[i].id.replace("RROW-", "");
 280                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 281                                 rows.push(row_id);
 282                 }
 283         }
 284         return rows;
 285 }
 286
 287 function getVisibleHeadlineIds() {
 288
 289         var content = document.getElementById("headlinesList");
 290
 291         var rows = new Array();
 292
 293         for (i = 0; i < content.rows.length; i++) {
 294                 var row_id = content.rows[i].id.replace("RROW-", "");
 295                 if (row_id.length > 0) {
 296                                 rows.push(row_id);
 297                 }
 298         }
 299         return rows;
 300 }
 301
 302 function getFirstVisibleHeadlineId() {
 303         var rows = getVisibleHeadlineIds();
 304         return rows[0];
 305 }
 306
 307 function getLastVisibleHeadlineId() {
 308         var rows = getVisibleHeadlineIds();
 309         return rows[rows.length-1];
 310 }
 311
 312 function markHeadline(id) {
 313         var row = document.getElementById("RROW-" + id);
 314         if (row) {
 315                 var is_active = false;
 316
 317                 if (row.className.match("Active")) {
 318                         is_active = true;
 319                 }
 320                 row.className = row.className.replace("Selected", "");
 321                 row.className = row.className.replace("Active", "");
 322                 row.className = row.className.replace("Insensitive", "");
 323
 324                 if (is_active) {
 325                         row.className = row.className = "Active";
 326                 }
 327
 328                 var check = document.getElementById("RCHK-" + id);
 329
 330                 if (check) {
 331                         check.checked = true;
 332                 }
 333
 334                 row.className = row.className + "Selected";
 335
 336         }
 337 }
 338
 339 function getFeedIds() {
 340         var content = document.getElementById("feedsList");
 341
 342         var rows = new Array();
 343
 344         for (i = 0; i < content.rows.length; i++) {
 345                 var id = content.rows[i].id.replace("FEEDR-", "");
 346                 if (id.length > 0) {
 347                         rows.push(id);
 348                 }
 349         }
 350
 351         return rows;
 352 }
 353
 354 function setCookie(name, value, lifetime, path, domain, secure) {
 355
 356         var d = false;
 357
 358         if (lifetime) {
 359                 d = new Date();
 360                 d.setTime(lifetime * 1000);
 361         }
 362
 363         int_setCookie(name, value, d, path, domain, secure);
 364
 365 }
 366
 367 function int_setCookie(name, value, expires, path, domain, secure) {
 368         document.cookie= name + "=" + escape(value) +
 369                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 370                 ((path) ? "; path=" + path : "") +
 371                 ((domain) ? "; domain=" + domain : "") +
 372                 ((secure) ? "; secure" : "");
 373 }
 374
 375 function delCookie(name, path, domain) {
 376         if (getCookie(name)) {
 377                 document.cookie = name + "=" +
 378                 ((path) ? ";path=" + path : "") +
 379                 ((domain) ? ";domain=" + domain : "" ) +
 380                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 381         }
 382 }
 383
 384
 385 function getCookie(name) {
 386
 387         var dc = document.cookie;
 388         var prefix = name + "=";
 389         var begin = dc.indexOf("; " + prefix);
 390         if (begin == -1) {
 391             begin = dc.indexOf(prefix);
 392             if (begin != 0) return null;
 393         }
 394         else {
 395             begin += 2;
 396         }
 397         var end = document.cookie.indexOf(";", begin);
 398         if (end == -1) {
 399             end = dc.length;
 400         }
 401         return unescape(dc.substring(begin + prefix.length, end));
 402 }
 403
 404 function disableContainerChildren(id, disable, doc) {
 405
 406         if (!doc) doc = document;
 407
 408         var container = doc.getElementById(id);
 409
 410         if (!container) {
 411                 //alert("disableContainerChildren: element " + id + " not found");
 412                 return;
 413         }
 414
 415         for (var i = 0; i < container.childNodes.length; i++) {
 416                 var child = container.childNodes[i];
 417
 418                 try {
 419                         child.disabled = disable;
 420                 } catch (E) {
 421
 422                 }
 423
 424                 if (disable) {
 425                         if (child.className && child.className.match("button")) {
 426                                 child.className = "disabledButton";
 427                         }
 428                 } else {
 429                         if (child.className && child.className.match("disabledButton")) {
 430                                 child.className = "button";
 431                         }
 432                 }
 433         }
 434
 435 }
 436
 437 function gotoPreferences() {
 438         document.location.href = "prefs.php";
 439 }
 440
 441 function gotoMain() {
 442         document.location.href = "tt-rss.php";
 443 }
 444
 445 function gotoExportOpml() {
 446         document.location.href = "opml.php?op=Export";
 447 }
 448
 449 function getActiveFeedId() {
 450 //      return getCookie("ttrss_vf_actfeed");
 451         try {
 452                 debug("gAFID: " + getMainContext().active_feed_id);
 453                 return getMainContext().active_feed_id;
 454         } catch (e) {
 455                 exception_error("getActiveFeedId", e);
 456         }
 457 }
 458
 459 function setActiveFeedId(id) {
 460 //      return setCookie("ttrss_vf_actfeed", id);
 461         try {
 462                 getMainContext().active_feed_id = id;
 463         } catch (e) {
 464                 exception_error("setActiveFeedId", e);
 465         }
 466 }
 467
 468 function parse_counters(reply, scheduled_call) {
 469         try {
 470                 var f_document = getFeedsContext().document;
 471                 var title_obj = getMainContext();
 472
 473                 if (reply.firstChild && reply.firstChild.firstChild) {
 474                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 475                         reply = reply.firstChild;
 476                 }
 477
 478                 debug("F_DOC: " + f_document + ", T_OBJ: " + title_obj);
 479
 480                 for (var l = 0; l < reply.childNodes.length; l++) {
 481                         if (!reply.childNodes[l] ||
 482                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 483                                 // where did this come from?
 484                                 continue;
 485                         }
 486
 487                         var id = reply.childNodes[l].getAttribute("id");
 488                         var t = reply.childNodes[l].getAttribute("type");
 489                         var ctr = reply.childNodes[l].getAttribute("counter");
 490                         var error = reply.childNodes[l].getAttribute("error");
 491                         var has_img = reply.childNodes[l].getAttribute("hi");
 492                         var updated = reply.childNodes[l].getAttribute("updated");
 493
 494                         if (id == "global-unread") {
 495                                 title_obj.global_unread = ctr;
 496                                 title_obj.updateTitle();
 497                                 continue;
 498                         }
 499
 500                         if (t == "category") {
 501                                 var catctr = f_document.getElementById("FCATCTR-" + id);
 502                                 if (catctr) {
 503                                         catctr.innerHTML = "(" + ctr + " unread)";
 504                                 }
 505                                 continue;
 506                         }
 507
 508                         var feedctr = f_document.getElementById("FEEDCTR-" + id);
 509                         var feedu = f_document.getElementById("FEEDU-" + id);
 510                         var feedr = f_document.getElementById("FEEDR-" + id);
 511                         var feed_img = f_document.getElementById("FIMG-" + id);
 512                         var feedlink = f_document.getElementById("FEEDL-" + id);
 513
 514                         if (updated && feedlink) {
 515                                 if (error) {
 516                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 517                                 } else {
 518                                         feedlink.title = "Updated: " + updated;
 519                                 }
 520                         }
 521
 522                         if (feedctr && feedu && feedr) {
 523
 524                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 525                                         var hf = title_obj.parent.frames["headlines-frame"];
 526                                         hf.location.reload(true);
 527                                 }
 528
 529                                 feedu.innerHTML = ctr;
 530
 531                                 if (error) {
 532                                         feedr.className = feedr.className.replace("feed", "error");
 533                                 } else if (id > 0) {
 534                                         feedr.className = feedr.className.replace("error", "feed");
 535                                 }
 536
 537                                 if (ctr > 0) {
 538                                         feedctr.className = "odd";
 539                                         if (!feedr.className.match("Unread")) {
 540                                                 var is_selected = feedr.className.match("Selected");
 541
 542                                                 feedr.className = feedr.className.replace("Selected", "");
 543                                                 feedr.className = feedr.className.replace("Unread", "");
 544
 545                                                 feedr.className = feedr.className + "Unread";
 546
 547                                                 if (is_selected) {
 548                                                         feedr.className = feedr.className + "Selected";
 549                                                 }
 550
 551                                         }
 552                                 } else {
 553                                         feedctr.className = "invisible";
 554                                         feedr.className = feedr.className.replace("Unread", "");
 555                                 }
 556                         }
 557                 }
 558         } catch (e) {
 559                 exception_error("parse_counters", e);
 560         }
 561 }
 562
 563 function all_counters_callback() {
 564         if (xmlhttp_rpc.readyState == 4) {
 565                 try {
 566                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 567                                 notify("[all_counters_callback] backend did not return valid XML");
 568                                 return;
 569                         }
 570
 571                         debug("in all_counters_callback");
 572
 573                         var reply = xmlhttp_rpc.responseXML.firstChild;
 574
 575                         var counters = reply.firstChild;
 576
 577                         parse_counters(counters);
 578
 579                         var runtime = counters.nextSibling;
 580
 581                         if (runtime) {
 582                                 getMainContext().parse_runtime_info(runtime);
 583                         }
 584
 585                 } catch (e) {
 586                         exception_error("all_counters_callback", e);
 587                 }
 588         }
 589 }
 590
 591 function update_all_counters(feed) {
 592         if (xmlhttp_ready(xmlhttp_rpc)) {
 593                 var query = "backend.php?op=rpc&subop=getAllCounters";
 594
 595                 if (feed > 0) {
 596                         query = query + "&aid=" + feed;
 597                 }
 598
 599                 xmlhttp_rpc.open("GET", query, true);
 600                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 601                 xmlhttp_rpc.send(null);
 602         }
 603 }
 604
 605 function popupHelp(tid) {
 606         var w = window.open("backend.php?op=help&tid=" + tid,
 607                 "Popup Help",
 608                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 609 }
 610
 611 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 612   * * @author Sundar Dorai-Raj
 613   * * Email: sdoraira@vt.edu
 614   * * This program is free software; you can redistribute it and/or
 615   * * modify it under the terms of the GNU General Public License
 616   * * as published by the Free Software Foundation; either version 2
 617   * * of the License, or (at your option) any later version,
 618   * * provided that any use properly credits the author.
 619   * * This program is distributed in the hope that it will be useful,
 620   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 621   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 622   * * GNU General Public License for more details at http://www.gnu.org * * */
 623
 624   var numbers=".0123456789";
 625   function isNumeric(x) {
 626     // is x a String or a character?
 627     if(x.length>1) {
 628       // remove negative sign
 629       x=Math.abs(x)+"";
 630       for(j=0;j<x.length;j++) {
 631         // call isNumeric recursively for each character
 632         number=isNumeric(x.substring(j,j+1));
 633         if(!number) return number;
 634       }
 635       return number;
 636     }
 637     else {
 638       // if x is number return true
 639       if(numbers.indexOf(x)>=0) return true;
 640       return false;
 641     }
 642   }
 643
 644
 645 function hideOrShowFeeds(doc, hide) {
 646
 647         if (!doc.styleSheets) return;
 648
 649         var css_rules = doc.styleSheets[0].cssRules;
 650
 651         if (!css_rules || !css_rules.length) return;
 652
 653         for (i = 0; i < css_rules.length; i++) {
 654                 var rule = css_rules[i];
 655
 656                 if (rule.selectorText == "ul.feedList li.feed") {
 657                         if (!hide) {
 658                                 rule.style.display = "block";
 659                         } else {
 660                                 rule.style.display = "none";
 661                         }
 662                 }
 663
 664         }
 665
 666 }
 667
 668 function selectTableRow(r, do_select) {
 669         r.className = r.className.replace("Selected", "");
 670
 671         if (do_select) {
 672                 r.className = r.className + "Selected";
 673         }
 674 }
 675
 676 function selectTableRowById(elem_id, check_id, do_select) {
 677
 678         try {
 679
 680                 var row = document.getElementById(elem_id);
 681
 682                 if (row) {
 683                         selectTableRow(row, do_select);
 684                 }
 685
 686                 var check = document.getElementById(check_id);
 687
 688                 if (check) {
 689                         check.checked = do_select;
 690                 }
 691         } catch (e) {
 692                 exception_error("selectTableRowById", e);
 693         }
 694 }
 695
 696 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 697         classcheck, reset_others) {
 698
 699         var content = document.getElementById(content_id);
 700
 701         if (!content) {
 702                 alert("[selectTableRows] Element " + content_id + " not found.");
 703                 return;
 704         }
 705
 706         for (i = 0; i < content.rows.length; i++) {
 707                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 708
 709                         if (content.rows[i].id.match(prefix)) {
 710                                 selectTableRow(content.rows[i], do_select);
 711
 712                                 var row_id = content.rows[i].id.replace(prefix, "");
 713                                 var check = document.getElementById(check_prefix + row_id);
 714
 715                                 if (check) {
 716                                         check.checked = do_select;
 717                                 }
 718                         } else if (reset_others) {
 719                                 selectTableRow(content.rows[i], false);
 720
 721                                 var row_id = content.rows[i].id.replace(prefix, "");
 722                                 var check = document.getElementById(check_prefix + row_id);
 723
 724                                 if (check) {
 725                                         check.checked = false;
 726                                 }
 727
 728                         }
 729                 } else if (reset_others) {
 730                         selectTableRow(content.rows[i], false);
 731
 732                         var row_id = content.rows[i].id.replace(prefix, "");
 733                         var check = document.getElementById(check_prefix + row_id);
 734
 735                         if (check) {
 736                                 check.checked = false;
 737                         }
 738
 739                 }
 740         }
 741 }
 742
 743 function getSelectedTableRowIds(content_id, prefix) {
 744
 745         var content = document.getElementById(content_id);
 746
 747         if (!content) {
 748                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 749                 return;
 750         }
 751
 752         var sel_rows = new Array();
 753
 754         for (i = 0; i < content.rows.length; i++) {
 755                 if (content.rows[i].id.match(prefix) &&
 756                                 content.rows[i].className.match("Selected")) {
 757
 758                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 759                         sel_rows.push(row_id);
 760                 }
 761         }
 762
 763         return sel_rows;
 764
 765 }
 766
 767 function toggleSelectRowById(sender, id) {
 768         var row = document.getElementById(id);
 769
 770         if (sender.checked) {
 771                 if (!row.className.match("Selected")) {
 772                         row.className = row.className + "Selected";
 773                 }
 774         } else {
 775                 if (row.className.match("Selected")) {
 776                         row.className = row.className.replace("Selected", "");
 777                 }
 778         }
 779 }
 780
 781 function toggleSelectListRow(sender) {
 782         var parent_row = sender.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
 796 function toggleSelectRow(sender) {
 797         var parent_row = sender.parentNode.parentNode;
 798
 799         if (sender.checked) {
 800                 if (!parent_row.className.match("Selected")) {
 801                         parent_row.className = parent_row.className + "Selected";
 802                 }
 803         } else {
 804                 if (parent_row.className.match("Selected")) {
 805                         parent_row.className = parent_row.className.replace("Selected", "");
 806                 }
 807         }
 808 }
 809
 810 function openExternalUrl(url) {
 811         var w = window.open(url);
 812 }
 813
 814 function getRelativeFeedId(list, id, direction, unread_only) {
 815         if (!id) {
 816                 if (direction == "next") {
 817                         for (i = 0; i < list.childNodes.length; i++) {
 818                                 var child = list.childNodes[i];
 819                                 if (child.id && child.id == "feedCatHolder") {
 820                                         if (child.lastChild) {
 821                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 822                                                 if (cr) return cr;
 823                                         }
 824                                 } else if (child.id && child.id.match("FEEDR-")) {
 825                                         return child.id.replace('FEEDR-', '');
 826                                 }
 827                         }
 828                 }
 829
 830                 // FIXME select last feed doesn't work when only unread feeds are visible
 831
 832                 if (direction == "prev") {
 833                         for (i = list.childNodes.length-1; i >= 0; i--) {
 834                                 var child = list.childNodes[i];
 835                                 if (child.id == "feedCatHolder") {
 836                                         if (child.firstChild) {
 837                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 838                                                 if (cr) return cr;
 839                                         }
 840                                 } else if (child.id.match("FEEDR-")) {
 841
 842                                         if (getInitParam("hide_read_feeds") == 1) {
 843                                                 if (child.className != "feed") {
 844                                                         alert(child.className);
 845                                                         return child.id.replace('FEEDR-', '');
 846                                                 }
 847                                         } else {
 848                                                         return child.id.replace('FEEDR-', '');
 849                                         }
 850                                 }
 851                         }
 852                 }
 853         } else {
 854
 855                 var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
 856
 857                 if (getInitParam("hide_read_feeds") == 1) {
 858                         unread_only = true;
 859                 }
 860
 861                 if (direction == "next") {
 862
 863                         var e = feed;
 864
 865                         while (e) {
 866
 867                                 if (e.nextSibling) {
 868
 869                                         e = e.nextSibling;
 870
 871                                 } else if (e.parentNode.parentNode.nextSibling) {
 872
 873                                         var this_cat = e.parentNode.parentNode;
 874
 875                                         e = false;
 876
 877                                         if (this_cat && this_cat.nextSibling) {
 878                                                 while (!e && this_cat.nextSibling) {
 879                                                         this_cat = this_cat.nextSibling;
 880                                                         if (this_cat.id == "feedCatHolder") {
 881                                                                 e = this_cat.firstChild.firstChild;
 882                                                         }
 883                                                 }
 884                                         }
 885
 886                                 } else {
 887                                         e = false;
 888                            }
 889
 890                                 if (e) {
 891                                         if (!unread_only || (unread_only && e.className != "feed" &&
 892                                                         e.className != "error"))        {
 893                                                 return e.id.replace("FEEDR-", "");
 894                                         }
 895                                 }
 896                         }
 897
 898                 } else if (direction == "prev") {
 899
 900                         var e = feed;
 901
 902                         while (e) {
 903
 904                                 if (e.previousSibling) {
 905
 906                                         e = e.previousSibling;
 907
 908                                 } else if (e.parentNode.parentNode.previousSibling) {
 909
 910                                         var this_cat = e.parentNode.parentNode;
 911
 912                                         e = false;
 913
 914                                         if (this_cat && this_cat.previousSibling) {
 915                                                 while (!e && this_cat.previousSibling) {
 916                                                         this_cat = this_cat.previousSibling;
 917                                                         if (this_cat.id == "feedCatHolder") {
 918                                                                 e = this_cat.firstChild.lastChild;
 919                                                         }
 920                                                 }
 921                                         }
 922
 923                                 } else {
 924                                         e = false;
 925                            }
 926
 927                                 if (e) {
 928                                         if (!unread_only || (unread_only && e.className != "feed" &&
 929                                                         e.className != "error"))        {
 930                                                 return e.id.replace("FEEDR-", "");
 931                                         }
 932                                 }
 933                         }
 934                 }
 935         }
 936 }
 937
 938 function showBlockElement(id) {
 939         var elem = document.getElementById(id);
 940
 941         if (elem) {
 942                 elem.style.display = "block";
 943         } else {
 944                 alert("[showBlockElement] can't find element with id " + id);
 945         }
 946 }
 947
 948 function hideParentElement(e) {
 949         e.parentNode.style.display = "none";
 950 }
 951
 952 function dropboxSelect(e, v) {
 953         for (i = 0; i < e.length; i++) {
 954                 if (e[i].value == v) {
 955                         e.selectedIndex = i;
 956                         break;
 957                 }
 958         }
 959 }
 960
 961 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 962 // bugfixed just a little bit :-)
 963 function getURLParam(strParamName){
 964   var strReturn = "";
 965   var strHref = window.location.href;
 966
 967   if (strHref.indexOf("#") == strHref.length-1) {
 968                 strHref = strHref.substring(0, strHref.length-1);
 969   }
 970
 971   if ( strHref.indexOf("?") > -1 ){
 972     var strQueryString = strHref.substr(strHref.indexOf("?"));
 973     var aQueryString = strQueryString.split("&");
 974     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 975       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 976         var aParam = aQueryString[iParam].split("=");
 977         strReturn = aParam[1];
 978         break;
 979       }
 980     }
 981   }
 982   return strReturn;
 983 }
 984
 985 function leading_zero(p) {
 986         var s = String(p);
 987         if (s.length == 1) s = "0" + s;
 988         return s;
 989 }
 990
 991 function closeInfoBox(cleanup) {
 992         var box = document.getElementById('infoBox');
 993         var shadow = document.getElementById('infoBoxShadow');
 994
 995         if (shadow) {
 996                 shadow.style.display = "none";
 997         } else if (box) {
 998                 box.style.display = "none";
 999         }
1000
1001         if (cleanup) box.innerHTML = "&nbsp;";
1002
1003         enableHotkeys();
1004
1005 }
1006
1007
1008 function displayDlg(id, param) {
1009
1010         if (!xmlhttp_ready(xmlhttp)) {
1011                 printLockingError();
1012                 return
1013         }
1014
1015         notify("");
1016
1017         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1018                 param_escape(id) + "&param=" + param_escape(param), true);
1019         xmlhttp.onreadystatechange=infobox_callback;
1020         xmlhttp.send(null);
1021
1022         disableHotkeys();
1023
1024 }
1025
1026 function infobox_submit_callback() {
1027         if (xmlhttp.readyState == 4) {
1028                 closeInfoBox();
1029
1030                 // called from prefs, reload tab
1031                 if (active_tab) {
1032                         selectTab(active_tab, false);
1033                 }
1034
1035                 notify(xmlhttp.responseText);
1036
1037         }
1038 }
1039
1040 function infobox_callback() {
1041         if (xmlhttp.readyState == 4) {
1042                 var box = document.getElementById('infoBox');
1043                 var shadow = document.getElementById('infoBoxShadow');
1044                 if (box) {
1045                         box.innerHTML=xmlhttp.responseText;
1046                         if (shadow) {
1047                                 shadow.style.display = "block";
1048                         } else {
1049                                 box.style.display = "block";
1050                         }
1051                 }
1052         }
1053 }
1054
1055 function qaddFilter() {
1056
1057         if (!xmlhttp_ready(xmlhttp)) {
1058                 printLockingError();
1059                 return
1060         }
1061
1062         var query = Form.serialize("filter_add_form");
1063
1064         xmlhttp.open("GET", "backend.php?" + query, true);
1065         xmlhttp.onreadystatechange=infobox_submit_callback;
1066         xmlhttp.send(null);
1067
1068         return true;
1069 }
1070
1071 function toggleSubmitNotEmpty(e, submit_id) {
1072         try {
1073                 document.getElementById(submit_id).disabled = (e.value == "")
1074         } catch (e) {
1075                 exception_error("toggleSubmitNotEmpty", e);
1076         }
1077 }
1078
1079 function isValidURL(s) {
1080         return s.match("http://") != null || s.match("https://") != null;
1081 }
1082
1083 function qafAdd() {
1084
1085         if (!xmlhttp_ready(xmlhttp)) {
1086                 printLockingError();
1087                 return
1088         }
1089
1090         notify("Adding feed...");
1091
1092         closeInfoBox();
1093
1094         var feeds_doc = getFeedsContext().document;
1095
1096         feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1097
1098         var query = Form.serialize("feed_add_form");
1099
1100         xmlhttp.open("GET", "backend.php?" + query, true);
1101         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1102         xmlhttp.send(null);
1103 }
1104
1105 function filterCR(e)
1106 {
1107      var key;
1108
1109      if(window.event)
1110           key = window.event.keyCode;     //IE
1111      else
1112           key = e.which;     //firefox
1113
1114      if(key == 13)
1115           return false;
1116      else
1117           return true;
1118 }
1119
1120 function getMainContext() {
1121         if (parent.window != window) {
1122                 return parent.window;
1123         } else {
1124                 return this.window;
1125         }
1126 }
1127
1128 function getFeedsContext() {
1129         try {
1130                 return getMainContext().frames["feeds-frame"];
1131         } catch (e) {
1132                 exception_error("getFeedsContext", e);
1133         }
1134 }
1135
1136
1137 function getHeadlinesContext() {
1138         try {
1139                 return getMainContext().frames["headlines-frame"];
1140         } catch (e) {
1141                 exception_error("getHeadlinesContext", e);
1142         }
1143 }
1144
1145 function debug(msg) {
1146         var ctx = getMainContext();
1147
1148         var c = ctx.document.getElementById('debug_output');
1149         if (c && c.style.display == "block") {
1150                 while (c.lastChild != 'undefined' && c.childNodes.length > 20) {
1151                         c.removeChild(c.lastChild);
1152                 }
1153
1154                 var d = new Date();
1155                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1156                         ":" + leading_zero(d.getSeconds());
1157                 c.innerHTML = "<li>[" + ts + "] " + msg + "</li>" + c.innerHTML;
1158         }
1159 }
1160
1161 function getInitParam(key) {
1162         return getMainContext().init_params[key];
1163 }
1164
1165 // TODO: batch mode
1166 function storeInitParam(key, value, is_client) {
1167         try {
1168                 getMainContext().init_params[key] = value;
1169                 if (!is_client) {
1170                         new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1171                                 param_escape(key) + "&value=" + param_escape(value));
1172                 }
1173         } catch (e) {
1174                 exception_error("storeInitParam", e);
1175         }
1176 }
1177
1178 function fatalError(code, message) {
1179         try {
1180                 var fe = document.getElementById("fatal_error");
1181                 var fc = document.getElementById("fatal_error_msg");
1182
1183                 fc.innerHTML = "Code " + code + ": " + message;
1184
1185                 fe.style.display = "block";
1186
1187         } catch (e) {
1188                 exception_error("fatalError", e);
1189         }
1190 }
1191
1192 function getFeedName(id) {
1193         var d = getFeedsContext().document;
1194         var e = d.getElementById("FEEDN-" + id);
1195         if (e) {
1196                 return e.innerHTML.stripTags();
1197         } else {
1198                 return null;
1199         }
1200 }