functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var last_progress_point = 0;
   4 var sanity_check_done = false;
   5
   6 /* add method to remove element from array */
   7
   8 Array.prototype.remove = function(s) {
   9         for (var i=0; i < this.length; i++) {
  10                 if (s == this[i]) this.splice(i, 1);
  11         }
  12 }
  13
  14 /* create console.log if it doesn't exist */
  15
  16 if (!window.console) console = {};
  17 console.log = console.log || function(msg) { };
  18 console.warn = console.warn || function(msg) { };
  19 console.error = console.error || function(msg) { };
  20
  21 function exception_error(location, e, ext_info) {
  22         var msg = format_exception_error(location, e);
  23
  24         if (!ext_info) ext_info = false;
  25
  26         disableHotkeys();
  27
  28         try {
  29
  30                 if (ext_info) {
  31                         if (ext_info.responseText) {
  32                                 ext_info = ext_info.responseText;
  33                         }
  34                 }
  35
  36                 var content = "<div class=\"fatalError\">" +
  37                         "<pre>" + msg + "</pre>";
  38
  39                 if (ext_info) {
  40                         content += "<div><b>Additional information:</b></div>" +
  41                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  42                 }
  43
  44                 content += "<div><b>Stack trace:</b></div>" +
  45                         "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  46
  47                 content += "<div style='text-align : center'>" +
  48                         "<button onclick=\"closeInfoBox()\">" +
  49                         "Close this window" + "</button></div>";
  50
  51                 // TODO: add code to automatically report errors to tt-rss.org
  52
  53                 Modalbox.show(content, {title: "Unhandled exception", width: 600,
  54                         resizeDuration: 0, transitions: false});
  55
  56         } catch (e) {
  57                 alert(msg);
  58         }
  59
  60 }
  61
  62 function format_exception_error(location, e) {
  63         var msg;
  64
  65         if (e.fileName) {
  66                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  67
  68                 msg = "Exception: " + e.name + ", " + e.message +
  69                         "\nFunction: " + location + "()" +
  70                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  71
  72         } else if (e.description) {
  73                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  74         } else {
  75                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  76         }
  77
  78         console.error("EXCEPTION: " + msg);
  79
  80         return msg;
  81 }
  82
  83
  84 function disableHotkeys() {
  85         hotkeys_enabled = false;
  86 }
  87
  88 function enableHotkeys() {
  89         hotkeys_enabled = true;
  90 }
  91
  92 function param_escape(arg) {
  93         if (typeof encodeURIComponent != 'undefined')
  94                 return encodeURIComponent(arg);
  95         else
  96                 return escape(arg);
  97 }
  98
  99 function param_unescape(arg) {
 100         if (typeof decodeURIComponent != 'undefined')
 101                 return decodeURIComponent(arg);
 102         else
 103                 return unescape(arg);
 104 }
 105
 106 var notify_hide_timerid = false;
 107
 108 function hide_notify() {
 109         var n = $("notify");
 110         if (n) {
 111                 n.style.display = "none";
 112         }
 113 }
 114
 115 function notify_silent_next() {
 116         notify_silent = true;
 117 }
 118
 119 function notify_real(msg, no_hide, n_type) {
 120
 121         if (notify_silent) {
 122                 notify_silent = false;
 123                 return;
 124         }
 125
 126         var n = $("notify");
 127         var nb = $("notify_body");
 128
 129         if (!n || !nb) return;
 130
 131         if (notify_hide_timerid) {
 132                 window.clearTimeout(notify_hide_timerid);
 133         }
 134
 135         if (msg == "") {
 136                 if (n.style.display == "block") {
 137                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 138                 }
 139                 return;
 140         } else {
 141                 n.style.display = "block";
 142         }
 143
 144         /* types:
 145
 146                 1 - generic
 147                 2 - progress
 148                 3 - error
 149                 4 - info
 150
 151         */
 152
 153         if (typeof __ != 'undefined') {
 154                 msg = __(msg);
 155         }
 156
 157         if (n_type == 1) {
 158                 n.className = "notify";
 159         } else if (n_type == 2) {
 160                 n.className = "notifyProgress";
 161                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 162         } else if (n_type == 3) {
 163                 n.className = "notifyError";
 164                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 165         } else if (n_type == 4) {
 166                 n.className = "notifyInfo";
 167                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 168         }
 169
 170 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 171
 172         nb.innerHTML = msg;
 173
 174         if (!no_hide) {
 175                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 176         }
 177 }
 178
 179 function notify(msg, no_hide) {
 180         notify_real(msg, no_hide, 1);
 181 }
 182
 183 function notify_progress(msg, no_hide) {
 184         notify_real(msg, no_hide, 2);
 185 }
 186
 187 function notify_error(msg, no_hide) {
 188         notify_real(msg, no_hide, 3);
 189
 190 }
 191
 192 function notify_info(msg, no_hide) {
 193         notify_real(msg, no_hide, 4);
 194 }
 195
 196 function setCookie(name, value, lifetime, path, domain, secure) {
 197
 198         var d = false;
 199
 200         if (lifetime) {
 201                 d = new Date();
 202                 d.setTime(d.getTime() + (lifetime * 1000));
 203         }
 204
 205         console.log("setCookie: " + name + " => " + value + ": " + d);
 206
 207         int_setCookie(name, value, d, path, domain, secure);
 208
 209 }
 210
 211 function int_setCookie(name, value, expires, path, domain, secure) {
 212         document.cookie= name + "=" + escape(value) +
 213                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 214                 ((path) ? "; path=" + path : "") +
 215                 ((domain) ? "; domain=" + domain : "") +
 216                 ((secure) ? "; secure" : "");
 217 }
 218
 219 function delCookie(name, path, domain) {
 220         if (getCookie(name)) {
 221                 document.cookie = name + "=" +
 222                 ((path) ? ";path=" + path : "") +
 223                 ((domain) ? ";domain=" + domain : "" ) +
 224                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 225         }
 226 }
 227
 228
 229 function getCookie(name) {
 230
 231         var dc = document.cookie;
 232         var prefix = name + "=";
 233         var begin = dc.indexOf("; " + prefix);
 234         if (begin == -1) {
 235             begin = dc.indexOf(prefix);
 236             if (begin != 0) return null;
 237         }
 238         else {
 239             begin += 2;
 240         }
 241         var end = document.cookie.indexOf(";", begin);
 242         if (end == -1) {
 243             end = dc.length;
 244         }
 245         return unescape(dc.substring(begin + prefix.length, end));
 246 }
 247
 248 function gotoPreferences() {
 249         document.location.href = "prefs.php";
 250 }
 251
 252 function gotoMain() {
 253         document.location.href = "tt-rss.php";
 254 }
 255
 256 function gotoExportOpml() {
 257         document.location.href = "opml.php?op=Export";
 258 }
 259
 260
 261 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 262   * * @author Sundar Dorai-Raj
 263   * * Email: sdoraira@vt.edu
 264   * * This program is free software; you can redistribute it and/or
 265   * * modify it under the terms of the GNU General Public License
 266   * * as published by the Free Software Foundation; either version 2
 267   * * of the License, or (at your option) any later version,
 268   * * provided that any use properly credits the author.
 269   * * This program is distributed in the hope that it will be useful,
 270   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 271   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 272   * * GNU General Public License for more details at http://www.gnu.org * * */
 273
 274   var numbers=".0123456789";
 275   function isNumeric(x) {
 276     // is x a String or a character?
 277     if(x.length>1) {
 278       // remove negative sign
 279       x=Math.abs(x)+"";
 280       for(j=0;j<x.length;j++) {
 281         // call isNumeric recursively for each character
 282         number=isNumeric(x.substring(j,j+1));
 283         if(!number) return number;
 284       }
 285       return number;
 286     }
 287     else {
 288       // if x is number return true
 289       if(numbers.indexOf(x)>=0) return true;
 290       return false;
 291     }
 292   }
 293
 294
 295 function toggleSelectRowById(sender, id) {
 296         var row = $(id);
 297         return toggleSelectRow(sender, row);
 298 }
 299
 300 function toggleSelectListRow(sender) {
 301         var row = sender.parentNode;
 302         return toggleSelectRow(sender, row);
 303 }
 304
 305 function tSR(sender, row) {
 306         return toggleSelectRow(sender, row);
 307 }
 308
 309 function toggleSelectRow(sender, row) {
 310
 311         if (!row) row = sender.parentNode.parentNode;
 312
 313         if (sender.checked && !row.hasClassName('Selected'))
 314                 row.addClassName('Selected');
 315         else
 316                 row.removeClassName('Selected');
 317 }
 318
 319 function checkboxToggleElement(elem, id) {
 320         if (elem.checked) {
 321                 Effect.Appear(id, {duration : 0.5,
 322                         afterSetup: function() {
 323                                 Modalbox.resizeToContent();
 324                         }});
 325         } else {
 326                 Effect.Fade(id, {duration : 0.5});
 327         }
 328 }
 329
 330 function dropboxSelect(e, v) {
 331         for (i = 0; i < e.length; i++) {
 332                 if (e[i].value == v) {
 333                         e.selectedIndex = i;
 334                         break;
 335                 }
 336         }
 337 }
 338
 339 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 340 // bugfixed just a little bit :-)
 341 function getURLParam(strParamName){
 342   var strReturn = "";
 343   var strHref = window.location.href;
 344
 345   if (strHref.indexOf("#") == strHref.length-1) {
 346                 strHref = strHref.substring(0, strHref.length-1);
 347   }
 348
 349   if ( strHref.indexOf("?") > -1 ){
 350     var strQueryString = strHref.substr(strHref.indexOf("?"));
 351     var aQueryString = strQueryString.split("&");
 352     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 353       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 354         var aParam = aQueryString[iParam].split("=");
 355         strReturn = aParam[1];
 356         break;
 357       }
 358     }
 359   }
 360   return strReturn;
 361 }
 362
 363 function leading_zero(p) {
 364         var s = String(p);
 365         if (s.length == 1) s = "0" + s;
 366         return s;
 367 }
 368
 369 function make_timestamp() {
 370         var d = new Date();
 371
 372         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
 373                         ":" + leading_zero(d.getSeconds());
 374 }
 375
 376
 377 function closeErrorBox() {
 378
 379         if (Element.visible("errorBoxShadow")) {
 380                 Element.hide("dialog_overlay");
 381                 Element.hide("errorBoxShadow");
 382
 383                 enableHotkeys();
 384         }
 385
 386         return false;
 387 }
 388
 389 function closeInfoBox(cleanup) {
 390
 391         try {
 392                 enableHotkeys();
 393                 Modalbox.hide();
 394
 395         } catch (e) {
 396                 //exception_error("closeInfoBox", e);
 397         }
 398         return false;
 399 }
 400
 401
 402 function displayDlg(id, param, callback) {
 403
 404         disableHotkeys();
 405         notify_progress("Loading, please wait...", true);
 406
 407         var query = "?op=dlg&id=" +
 408                 param_escape(id) + "&param=" + param_escape(param);
 409
 410         new Ajax.Request("backend.php", {
 411                 parameters: query,
 412                 onComplete: function (transport) {
 413                         infobox_callback2(transport);
 414                         if (callback) callback(transport);
 415                 } });
 416
 417         return false;
 418 }
 419
 420 function infobox_submit_callback2(transport) {
 421         closeInfoBox();
 422
 423         try {
 424                 // called from prefs, reload tab
 425                 if (typeof active_tab != 'undefined' && active_tab) {
 426                         selectTab(active_tab, false);
 427                 }
 428         } catch (e) { }
 429
 430         if (transport.responseText) {
 431                 notify_info(transport.responseText);
 432         }
 433 }
 434
 435 function infobox_callback2(transport) {
 436         try {
 437
 438                 //console.log("infobox_callback2");
 439                 notify('');
 440
 441                 var content;
 442                 var dtitle = "Dialog";
 443
 444                 if (transport.responseXML) {
 445                         var dlg = transport.responseXML.getElementsByTagName("dlg")[0];
 446
 447                         var title = transport.responseXML.getElementsByTagName("title")[0];
 448                         if (title)
 449                                 dtitle = title.firstChild.nodeValue;
 450
 451                         var content = transport.responseXML.getElementsByTagName("content")[0];
 452
 453                         content = content.firstChild.nodeValue;
 454
 455                 } else {
 456                         content = transport.responseText;
 457                 }
 458
 459                 Modalbox.show(content, {title: dtitle, width: 600,
 460                         transitions: true, resizeDuration: 0 });
 461
 462                 disableHotkeys();
 463
 464                 notify("");
 465         } catch (e) {
 466                 exception_error("infobox_callback2", e);
 467         }
 468 }
 469
 470 function createFilter() {
 471
 472         try {
 473
 474                 var form = document.forms['filter_add_form'];
 475                 var reg_exp = form.reg_exp.value;
 476
 477                 if (reg_exp == "") {
 478                         alert(__("Can't add filter: nothing to match on."));
 479                         return false;
 480                 }
 481
 482                 var query = "?op=rpc&subop=verifyRegexp&reg_exp=" + param_escape(reg_exp);
 483
 484                 notify_progress("Verifying regular expression...");
 485
 486                 new Ajax.Request("backend.php", {
 487                                 parameters: query,
 488                                 onComplete: function(transport) {
 489                                         handle_rpc_reply(transport);
 490
 491                                         var response = transport.responseXML;
 492
 493                                         if (response) {
 494                                                 var s = response.getElementsByTagName("status")[0].firstChild.nodeValue;
 495
 496                                                 notify('');
 497
 498                                                 if (s == "INVALID") {
 499                                                         alert("Match regular expression seems to be invalid.");
 500                                                         return;
 501                                                 } else {
 502
 503                                                         var query = Form.serialize("filter_add_form");
 504
 505                                                         // we can be called from some other tab in Prefs
 506                                                         if (typeof active_tab != 'undefined' && active_tab) {
 507                                                                 active_tab = "filterConfig";
 508                                                         }
 509
 510                                                         new Ajax.Request("backend.php?" + query, {
 511                                                                 onComplete: function (transport) {
 512                                                                         infobox_submit_callback2(transport);
 513                                                                 } });
 514
 515                                                         return true;
 516                                                 }
 517                                         }
 518
 519                         } });
 520
 521         } catch (e) {
 522                 exception_error("createFilter", e);
 523         }
 524 }
 525
 526 function isValidURL(s) {
 527         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
 528 }
 529
 530 function subscribeToFeed() {
 531
 532         try {
 533
 534         var form = document.forms['feed_add_form'];
 535         var feed_url = form.feed_url.value;
 536
 537         if (feed_url == "") {
 538                 alert(__("Can't subscribe: no feed URL given."));
 539                 return false;
 540         }
 541
 542         notify_progress(__("Subscribing to feed..."), true);
 543
 544         var query = Form.serialize("feed_add_form");
 545
 546         console.log("subscribe q: " + query);
 547
 548         Form.disable("feed_add_form");
 549
 550         new Ajax.Request("backend.php", {
 551                 parameters: query,
 552                 onComplete: function(transport) {
 553                         //dlg_frefresh_callback(transport);
 554
 555                         try {
 556
 557                                 if (!transport.responseXML) {
 558                                         console.log(transport.responseText);
 559                                         alert(__("Server error while trying to subscribe to specified feed."));
 560                                         return;
 561                                 }
 562
 563                                 var result = transport.responseXML.getElementsByTagName('result')[0];
 564                                 var rc = parseInt(result.getAttribute('code'));
 565
 566                                 Form.enable("feed_add_form");
 567
 568                                 notify('');
 569
 570                                 switch (rc) {
 571                                 case 1:
 572                                         closeInfoBox();
 573                                         notify_info(__("Subscribed to %s").replace("%s", feed_url));
 574
 575                                         if (inPreferences()) {
 576                                                 updateFeedList();
 577                                         } else {
 578                                                 setTimeout('updateFeedList(false, false)', 50);
 579                                         }
 580                                         break;
 581                                 case 2:
 582                                         alert(__("Specified URL seems to be invalid."));
 583                                         break;
 584                                 case 3:
 585                                         alert(__("Specified URL doesn't seem to contain any feeds."));
 586                                         break;
 587                                 case 4:
 588                                         new Ajax.Request("backend.php", {
 589                                                 parameters: 'op=rpc&subop=extractfeedurls&url=' + encodeURIComponent(feed_url),
 590                                                 onComplete: function(transport) {
 591                                                         var result = transport.responseXML.getElementsByTagName('urls')[0];
 592                                                         var feeds = JSON.parse(result.firstChild.nodeValue);
 593                                                         var select = document.getElementById("faad_feeds_container_select");
 594
 595                                                         while (select.hasChildNodes()) {
 596                                                                 select.removeChild(elem.firstChild);
 597                                                         }
 598                                                         var count = 0;
 599                                                         for (var feedUrl in feeds) {
 600                                                                 select.insert(new Option(feeds[feedUrl], feedUrl, false));
 601                                                                 count++;
 602                                                         }
 603                                                         if (count > 5) count = 5;
 604                                                         select.size = count;
 605
 606                                                         Effect.Appear('fadd_feeds_container', {duration : 0.5,
 607                                                                 afterSetup: function() {
 608                                                                         Modalbox.resizeToContent()
 609                                                                 }});
 610                                                 }
 611                                         });
 612                                         break;
 613                                 case 5:
 614                                         alert(__("Couldn't download the specified URL."));
 615                                         break;
 616                                 case 0:
 617                                         alert(__("You are already subscribed to this feed."));
 618                                         break;
 619                                 }
 620
 621                         } catch (e) {
 622                                 exception_error("subscribeToFeed", e);
 623                         }
 624
 625                 } });
 626
 627         } catch (e) {
 628                 exception_error("subscribeToFeed", e);
 629         }
 630
 631         return false;
 632 }
 633
 634 function filterCR(e, f)
 635 {
 636      var key;
 637
 638      if(window.event)
 639           key = window.event.keyCode;     //IE
 640      else
 641           key = e.which;     //firefox
 642
 643         if (key == 13) {
 644                 if (typeof f != 'undefined') {
 645                         f();
 646                         return false;
 647                 } else {
 648                         return false;
 649                 }
 650         } else {
 651                 return true;
 652         }
 653 }
 654
 655 function getInitParam(key) {
 656         return init_params[key];
 657 }
 658
 659 function setInitParam(key, value) {
 660         init_params[key] = value;
 661 }
 662
 663 function fatalError(code, msg, ext_info) {
 664         try {
 665
 666                 if (!ext_info) ext_info = "N/A";
 667
 668                 if (code == 6) {
 669                         window.location.href = "tt-rss.php";
 670                 } else if (code == 5) {
 671                         window.location.href = "db-updater.php";
 672                 } else {
 673
 674                         if (msg == "") msg = "Unknown error";
 675
 676                         var ebc = $("xebContent");
 677
 678                         if (ebc) {
 679
 680                                 Element.show("dialog_overlay");
 681                                 Element.show("errorBoxShadow");
 682                                 Element.hide("xebBtn");
 683
 684                                 if (ext_info) {
 685                                         if (ext_info.responseText) {
 686                                                 ext_info = ext_info.responseText;
 687                                         }
 688                                 }
 689
 690                                 ebc.innerHTML =
 691                                         "<div><b>Error message:</b></div>" +
 692                                         "<pre>" + msg + "</pre>" +
 693                                         "<div><b>Additional information:</b></div>" +
 694                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
 695                         }
 696                 }
 697
 698         } catch (e) {
 699                 exception_error("fatalError", e);
 700         }
 701 }
 702
 703 function filterDlgCheckType(sender) {
 704
 705         try {
 706
 707                 var ftype = sender[sender.selectedIndex].value;
 708
 709                 var form = document.forms["filter_add_form"];
 710
 711                 if (!form) {
 712                         form = document.forms["filter_edit_form"];
 713                 }
 714
 715                 if (!form) {
 716                         console.log("filterDlgCheckType: can't find form!");
 717                         return;
 718                 }
 719
 720                 // if selected filter type is 5 (Date) enable the modifier dropbox
 721                 if (ftype == 5) {
 722                         Element.show("filter_dlg_date_mod_box");
 723                         Element.show("filter_dlg_date_chk_box");
 724                 } else {
 725                         Element.hide("filter_dlg_date_mod_box");
 726                         Element.hide("filter_dlg_date_chk_box");
 727
 728                 }
 729
 730         } catch (e) {
 731                 exception_error("filterDlgCheckType", e);
 732         }
 733
 734 }
 735
 736 function filterDlgCheckAction(sender) {
 737
 738         try {
 739
 740                 var action = sender[sender.selectedIndex].value;
 741
 742                 var form = document.forms["filter_add_form"];
 743
 744                 if (!form) {
 745                         form = document.forms["filter_edit_form"];
 746                 }
 747
 748                 if (!form) {
 749                         console.log("filterDlgCheckAction: can't find form!");
 750                         return;
 751                 }
 752
 753                 var action_param = $("filter_dlg_param_box");
 754
 755                 if (!action_param) {
 756                         console.log("filterDlgCheckAction: can't find action param box!");
 757                         return;
 758                 }
 759
 760                 // if selected action supports parameters, enable params field
 761                 if (action == 4 || action == 6 || action == 7) {
 762                         Element.show(action_param);
 763                         if (action != 7) {
 764                                 Element.show(form.action_param);
 765                                 Element.hide(form.action_param_label);
 766                         } else {
 767                                 Element.show(form.action_param_label);
 768                                 Element.hide(form.action_param);
 769                         }
 770                 } else {
 771                         Element.hide(action_param);
 772                 }
 773
 774         } catch (e) {
 775                 exception_error("filterDlgCheckAction", e);
 776         }
 777
 778 }
 779
 780 function filterDlgCheckDate() {
 781         try {
 782                 var form = document.forms["filter_add_form"];
 783
 784                 if (!form) {
 785                         form = document.forms["filter_edit_form"];
 786                 }
 787
 788                 if (!form) {
 789                         console.log("filterDlgCheckAction: can't find form!");
 790                         return;
 791                 }
 792
 793                 var reg_exp = form.reg_exp.value;
 794
 795                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
 796
 797                 new Ajax.Request("backend.php", {
 798                         parameters: query,
 799                         onComplete: function(transport) {
 800
 801                                 var form = document.forms["filter_add_form"];
 802
 803                                 if (!form) {
 804                                         form = document.forms["filter_edit_form"];
 805                                 }
 806
 807                                 if (transport.responseXML) {
 808                                         var result = transport.responseXML.getElementsByTagName("result")[0];
 809
 810                                         if (result && result.firstChild) {
 811                                                 if (result.firstChild.nodeValue == "1") {
 812
 813                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
 814
 815                                                         return;
 816                                                 }
 817                                         }
 818                                 }
 819
 820                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
 821
 822                         } });
 823
 824
 825         } catch (e) {
 826                 exception_error("filterDlgCheckDate", e);
 827         }
 828 }
 829
 830 function explainError(code) {
 831         return displayDlg("explainError", code);
 832 }
 833
 834 function displayHelpInfobox(topic_id) {
 835
 836         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
 837
 838         var w = window.open(url, "ttrss_help",
 839                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
 840
 841 }
 842
 843 function loading_set_progress(p) {
 844         try {
 845                 if (p < last_progress_point || !Element.visible("overlay")) return;
 846
 847                 console.log("loading_set_progress : " + p + " (" + last_progress_point + ")");
 848
 849                 var o = $("l_progress_i");
 850
 851 //              o.style.width = (p * 2) + "px";
 852
 853                 new Effect.Scale(o, p, {
 854                         scaleY : false,
 855                         scaleFrom : last_progress_point,
 856                         scaleMode: { originalWidth : 200 },
 857                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
 858
 859                 last_progress_point = p;
 860
 861         } catch (e) {
 862                 exception_error("loading_set_progress", e);
 863         }
 864 }
 865
 866 function remove_splash() {
 867         if (Element.visible("overlay")) {
 868                 console.log("about to remove splash, OMG!");
 869                 Element.hide("overlay");
 870                 console.log("removed splash!");
 871         }
 872 }
 873
 874 function getSelectedFeedsFromBrowser() {
 875
 876         var list = $$("#browseFeedList li[id*=FBROW]");
 877
 878         var selected = new Array();
 879
 880         list.each(function(child) {
 881                 var id = child.id.replace("FBROW-", "");
 882                 var cb = $("FBCHK-" + id);
 883
 884                 if (cb.checked) {
 885                         selected.push(id);
 886                 }
 887         });
 888
 889         return selected;
 890 }
 891
 892 function updateFeedBrowser() {
 893         try {
 894
 895                 var query = Form.serialize("feed_browser");
 896
 897                 Element.show('feed_browser_spinner');
 898
 899                 new Ajax.Request("backend.php", {
 900                         parameters: query,
 901                         onComplete: function(transport) {
 902                                 notify('');
 903
 904                                 Element.hide('feed_browser_spinner');
 905
 906                                 var c = $("browseFeedList");
 907                                 var r = transport.responseXML.getElementsByTagName("content")[0];
 908                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
 909                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
 910
 911                                 if (c && r) {
 912                                         c.innerHTML = r.firstChild.nodeValue;
 913                                 }
 914
 915                                 if (parseInt(mode.getAttribute("value")) == 2) {
 916                                         Element.show('feed_archive_remove');
 917                                 } else {
 918                                         Element.hide('feed_archive_remove');
 919                                 }
 920
 921                         } });
 922
 923         } catch (e) {
 924                 exception_error("updateFeedBrowser", e);
 925         }
 926
 927 }
 928
 929 function transport_error_check(transport) {
 930         try {
 931                 if (transport.responseXML) {
 932                         var error = transport.responseXML.getElementsByTagName("error")[0];
 933
 934                         if (error) {
 935                                 var code = error.getAttribute("error-code");
 936                                 var msg = error.getAttribute("error-msg");
 937                                 if (code != 0) {
 938                                         fatalError(code, msg);
 939                                         return false;
 940                                 }
 941                         }
 942                 }
 943         } catch (e) {
 944                 exception_error("check_for_error_xml", e);
 945         }
 946         return true;
 947 }
 948
 949 function strip_tags(s) {
 950         return s.replace(/<\/?[^>]+(>|$)/g, "");
 951 }
 952
 953 function truncate_string(s, length) {
 954         if (!length) length = 30;
 955         var tmp = s.substring(0, length);
 956         if (s.length > length) tmp += "&hellip;";
 957         return tmp;
 958 }
 959
 960 function hotkey_prefix_timeout() {
 961         try {
 962
 963                 var date = new Date();
 964                 var ts = Math.round(date.getTime() / 1000);
 965
 966                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
 967                         console.log("hotkey_prefix seems to be stuck, aborting");
 968                         hotkey_prefix_pressed = false;
 969                         hotkey_prefix = false;
 970                         Element.hide('cmdline');
 971                 }
 972
 973                 setTimeout("hotkey_prefix_timeout()", 1000);
 974
 975         } catch  (e) {
 976                 exception_error("hotkey_prefix_timeout", e);
 977         }
 978 }
 979
 980 function hideAuxDlg() {
 981         try {
 982                 Element.hide('auxDlg');
 983         } catch (e) {
 984                 exception_error("hideAuxDlg", e);
 985         }
 986 }
 987
 988 function feedBrowserSubscribe() {
 989         try {
 990
 991                 var selected = getSelectedFeedsFromBrowser();
 992
 993                 var mode = document.forms['feed_browser'].mode;
 994
 995                 mode = mode[mode.selectedIndex].value;
 996
 997                 if (selected.length > 0) {
 998                         closeInfoBox();
 999
1000                         notify_progress("Loading, please wait...", true);
1001
1002                         var query = "?op=rpc&subop=massSubscribe&ids="+
1003                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1004
1005                         new Ajax.Request("backend.php", {
1006                                 parameters: query,
1007                                 onComplete: function(transport) {
1008
1009                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1010                                         var nf_value = nf.getAttribute("value");
1011
1012                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1013
1014                                         if (inPreferences()) {
1015                                                 updateFeedList();
1016                                         } else {
1017                                                 setTimeout('updateFeedList(false, false)', 50);
1018                                         }
1019                                 } });
1020
1021                 } else {
1022                         alert(__("No feeds are selected."));
1023                 }
1024
1025         } catch (e) {
1026                 exception_error("feedBrowserSubscribe", e);
1027         }
1028 }
1029
1030 function feedArchiveRemove() {
1031         try {
1032
1033                 var selected = getSelectedFeedsFromBrowser();
1034
1035                 if (selected.length > 0) {
1036
1037                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1038
1039                         if (confirm(pr)) {
1040                                 Element.show('feed_browser_spinner');
1041
1042                                 var query = "?op=rpc&subop=remarchived&ids=" +
1043                                         param_escape(selected.toString());;
1044
1045                                 new Ajax.Request("backend.php", {
1046                                         parameters: query,
1047                                         onComplete: function(transport) {
1048                                                 updateFeedBrowser();
1049                                         } });
1050                         }
1051
1052                 } else {
1053                         alert(__("No feeds are selected."));
1054                 }
1055
1056         } catch (e) {
1057                 exception_error("feedArchiveRemove", e);
1058         }
1059 }
1060
1061 function uploadIconHandler(rc) {
1062         try {
1063                 switch (rc) {
1064                         case 0:
1065                                 notify_info("Upload complete.");
1066                                 if (inPreferences()) {
1067                                         updateFeedList();
1068                                 } else {
1069                                         setTimeout('updateFeedList(false, false)', 50);
1070                                 }
1071                                 break;
1072                         case 1:
1073                                 notify_error("Upload failed: icon is too big.");
1074                                 break;
1075                         case 2:
1076                                 notify_error("Upload failed.");
1077                                 break;
1078                 }
1079
1080         } catch (e) {
1081                 exception_error("uploadIconHandler", e);
1082         }
1083 }
1084
1085 function removeFeedIcon(id) {
1086
1087         try {
1088
1089                 if (confirm(__("Remove stored feed icon?"))) {
1090                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
1091
1092                         console.log(query);
1093
1094                         notify_progress("Removing feed icon...", true);
1095
1096                         new Ajax.Request("backend.php", {
1097                                 parameters: query,
1098                                 onComplete: function(transport) {
1099                                         notify_info("Feed icon removed.");
1100                                         if (inPreferences()) {
1101                                                 updateFeedList();
1102                                         } else {
1103                                                 setTimeout('updateFeedList(false, false)', 50);
1104                                         }
1105                                 } });
1106                 }
1107
1108                 return false;
1109         } catch (e) {
1110                 exception_error("uploadFeedIcon", e);
1111         }
1112 }
1113
1114 function uploadFeedIcon() {
1115
1116         try {
1117
1118                 var file = $("icon_file");
1119
1120                 if (file.value.length == 0) {
1121                         alert(__("Please select an image file to upload."));
1122                 } else {
1123                         if (confirm(__("Upload new icon for this feed?"))) {
1124                                 notify_progress("Uploading, please wait...", true);
1125                                 return true;
1126                         }
1127                 }
1128
1129                 return false;
1130
1131         } catch (e) {
1132                 exception_error("uploadFeedIcon", e);
1133         }
1134 }
1135
1136 function addLabel(select, callback) {
1137
1138         try {
1139
1140                 var caption = prompt(__("Please enter label caption:"), "");
1141
1142                 if (caption != undefined) {
1143
1144                         if (caption == "") {
1145                                 alert(__("Can't create label: missing caption."));
1146                                 return false;
1147                         }
1148
1149                         var query = "?op=pref-labels&subop=add&caption=" +
1150                                 param_escape(caption);
1151
1152                         if (select)
1153                                 query += "&output=select";
1154
1155                         notify_progress("Loading, please wait...", true);
1156
1157                         if (inPreferences() && !select) active_tab = "labelConfig";
1158
1159                         new Ajax.Request("backend.php", {
1160                                 parameters: query,
1161                                 onComplete: function(transport) {
1162                                         if (callback) {
1163                                                 callback(transport);
1164                                         } else if (inPreferences()) {
1165                                                 infobox_submit_callback2(transport);
1166                                         } else {
1167                                                 updateFeedList();
1168                                         }
1169                         } });
1170
1171                 }
1172
1173         } catch (e) {
1174                 exception_error("addLabel", e);
1175         }
1176 }
1177
1178 function quickAddFeed() {
1179         displayDlg('quickAddFeed', '',
1180            function () {$('feed_url').focus();});
1181 }
1182
1183 function quickAddFilter() {
1184         displayDlg('quickAddFilter', '',
1185            function () {document.forms['filter_add_form'].reg_exp.focus();});
1186 }
1187
1188 function unsubscribeFeed(feed_id, title) {
1189
1190         var msg = __("Unsubscribe from %s?").replace("%s", title);
1191
1192         if (title == undefined || confirm(msg)) {
1193                 notify_progress("Removing feed...");
1194
1195                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
1196
1197                 new Ajax.Request("backend.php", {
1198                         parameters: query,
1199                         onComplete: function(transport) {
1200
1201                                         closeInfoBox();
1202
1203                                         if (inPreferences()) {
1204                                                 updateFeedList();
1205                                         } else {
1206                                                 dlg_frefresh_callback(transport, feed_id);
1207                                         }
1208
1209                                 } });
1210         }
1211
1212         return false;
1213 }
1214
1215
1216 function backend_sanity_check_callback(transport) {
1217
1218         try {
1219
1220                 if (sanity_check_done) {
1221                         fatalError(11, "Sanity check request received twice. This can indicate "+
1222                       "presence of Firebug or some other disrupting extension. "+
1223                                 "Please disable it and try again.");
1224                         return;
1225                 }
1226
1227                 if (!transport.responseXML) {
1228                         if (!store) {
1229                                 fatalError(3, "Sanity check: Received reply is not XML",
1230                                         transport.responseText);
1231                                 return;
1232                         }
1233                 }
1234
1235                 var reply = transport.responseXML.getElementsByTagName("error")[0];
1236
1237                 if (!reply) {
1238                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
1239                         return;
1240                 }
1241
1242                 var error_code = reply.getAttribute("error-code");
1243
1244                 if (error_code && error_code != 0) {
1245                         return fatalError(error_code, reply.getAttribute("error-msg"));
1246                 }
1247
1248                 console.log("sanity check ok");
1249
1250                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
1251
1252                 if (params) {
1253                         console.log('reading init-params...');
1254
1255                         params = JSON.parse(params.firstChild.nodeValue);
1256
1257                         if (params) {
1258                                 for (k in params) {
1259                                         var v = params[k];
1260                                         console.log("IP: " + k + " => " + v);
1261                                 }
1262                         }
1263
1264                         init_params = params;
1265                 }
1266
1267                 sanity_check_done = true;
1268
1269                 init_second_stage();
1270
1271         } catch (e) {
1272                 exception_error("backend_sanity_check_callback", e, transport);
1273         }
1274 }
1275
1276 function has_local_storage() {
1277         return false;
1278 /*      try {
1279                 return 'localStorage' in window && window['localStorage'] != null;
1280         } catch (e) {
1281                 return false;
1282         } */
1283 }
1284
1285 function catSelectOnChange(elem) {
1286         try {
1287                 var value = elem[elem.selectedIndex].value;
1288                 var def = elem.getAttribute('default');
1289
1290                 if (value == "ADD_CAT") {
1291
1292                         if (def)
1293                                 dropboxSelect(elem, def);
1294                         else
1295                                 elem.selectedIndex = 0;
1296
1297                         quickAddCat(elem);
1298                 }
1299
1300         } catch (e) {
1301                 exception_error("catSelectOnChange", e);
1302         }
1303 }
1304
1305 function quickAddCat(elem) {
1306         try {
1307                 var cat = prompt(__("Please enter category title:"));
1308
1309                 if (cat) {
1310
1311                         var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
1312
1313                         notify_progress("Loading, please wait...", true);
1314
1315                         new Ajax.Request("backend.php", {
1316                                 parameters: query,
1317                                 onComplete: function (transport) {
1318                                         var response = transport.responseXML;
1319                                         var select = response.getElementsByTagName("select")[0];
1320                                         var options = select.getElementsByTagName("option");
1321
1322                                         dropbox_replace_options(elem, options);
1323
1324                                         notify('');
1325
1326                         } });
1327
1328                 }
1329
1330         } catch (e) {
1331                 exception_error("quickAddCat", e);
1332         }
1333 }
1334
1335 function genUrlChangeKey(feed, is_cat) {
1336
1337         try {
1338                 var ok = confirm(__("Generate new syndication address for this feed?"));
1339
1340                 if (ok) {
1341
1342                         notify_progress("Trying to change address...", true);
1343
1344                         var query = "?op=rpc&subop=regenFeedKey&id=" + param_escape(feed) +
1345                                 "&is_cat=" + param_escape(is_cat);
1346
1347                         new Ajax.Request("backend.php", {
1348                                 parameters: query,
1349                                 onComplete: function(transport) {
1350                                                 var new_link = transport.responseXML.getElementsByTagName("link")[0];
1351
1352                                                 var e = $('gen_feed_url');
1353
1354                                                 if (new_link) {
1355
1356                                                         new_link = new_link.firstChild.nodeValue;
1357
1358                                                         e.innerHTML = e.innerHTML.replace(/\&amp;key=.*$/,
1359                                                                 "&amp;key=" + new_link);
1360
1361                                                         e.href = e.href.replace(/\&amp;key=.*$/,
1362                                                                 "&amp;key=" + new_link);
1363
1364                                                         new Effect.Highlight(e);
1365
1366                                                         notify('');
1367
1368                                                 } else {
1369                                                         notify_error("Could not change feed URL.");
1370                                                 }
1371                                 } });
1372                 }
1373         } catch (e) {
1374                 exception_error("genUrlChangeKey", e);
1375         }
1376         return false;
1377 }
1378
1379 function labelSelectOnChange(elem) {
1380         try {
1381                 var value = elem[elem.selectedIndex].value;
1382                 var def = elem.getAttribute('default');
1383
1384                 if (value == "ADD_LABEL") {
1385
1386                         if (def)
1387                                 dropboxSelect(elem, def);
1388                         else
1389                                 elem.selectedIndex = 0;
1390
1391                         addLabel(elem, function(transport) {
1392
1393                                         try {
1394
1395                                                 var response = transport.responseXML;
1396                                                 var select = response.getElementsByTagName("select")[0];
1397                                                 var options = select.getElementsByTagName("option");
1398
1399                                                 dropbox_replace_options(elem, options);
1400
1401                                                 notify('');
1402                                         } catch (e) {
1403                                                 exception_error("addLabel", e);
1404                                         }
1405                         });
1406                 }
1407
1408         } catch (e) {
1409                 exception_error("labelSelectOnChange", e);
1410         }
1411 }
1412
1413 function dropbox_replace_options(elem, options) {
1414
1415         try {
1416                 while (elem.hasChildNodes())
1417                         elem.removeChild(elem.firstChild);
1418
1419                 var sel_idx = -1;
1420
1421                 for (var i = 0; i < options.length; i++) {
1422                         var text = options[i].firstChild.nodeValue;
1423                         var value = options[i].getAttribute("value");
1424
1425                         if (value == undefined) value = text;
1426
1427                         var issel = options[i].getAttribute("selected") == "1";
1428
1429                         var option = new Option(text, value, issel);
1430
1431                         if (options[i].getAttribute("disabled"))
1432                                 option.setAttribute("disabled", true);
1433
1434                         elem.insert(option);
1435
1436                         if (issel) sel_idx = i;
1437                 }
1438
1439                 // Chrome doesn't seem to just select stuff when you pass new Option(x, y, true)
1440                 if (sel_idx >= 0) elem.selectedIndex = sel_idx;
1441
1442         } catch (e) {
1443                 exception_error("dropbox_replace_options", e);
1444         }
1445 }
1446
1447 // mode = all, none, invert
1448 function selectTableRows(id, mode) {
1449         try {
1450                 var rows = $(id).rows;
1451
1452                 for (var i = 0; i < rows.length; i++) {
1453                         var row = rows[i];
1454                         var cb = false;
1455
1456                         if (row.id && row.className) {
1457                                 var bare_id = row.id.replace(/^[A-Z]*?-/, "");
1458                                 var inputs = rows[i].getElementsByTagName("input");
1459
1460                                 for (var j = 0; j < inputs.length; j++) {
1461                                         var input = inputs[j];
1462
1463                                         if (input.getAttribute("type") == "checkbox" &&
1464                                                         input.id.match(bare_id)) {
1465
1466                                                 cb = input;
1467                                                 break;
1468                                         }
1469                                 }
1470
1471                                 if (cb) {
1472                                         var issel = row.hasClassName("Selected");
1473
1474                                         if (mode == "all" && !issel) {
1475                                                 row.addClassName("Selected");
1476                                                 cb.checked = true;
1477                                         } else if (mode == "none" && issel) {
1478                                                 row.removeClassName("Selected");
1479                                                 cb.checked = false;
1480                                         } else if (mode == "invert") {
1481
1482                                                 if (issel) {
1483                                                         row.removeClassName("Selected");
1484                                                         cb.checked = false;
1485                                                 } else {
1486                                                         row.addClassName("Selected");
1487                                                         cb.checked = true;
1488                                                 }
1489                                         }
1490                                 }
1491                         }
1492                 }
1493
1494         } catch (e) {
1495                 exception_error("selectTableRows", e);
1496
1497         }
1498 }
1499
1500 function getSelectedTableRowIds(id) {
1501         var rows = [];
1502
1503         try {
1504                 var elem_rows = $(id).rows;
1505
1506                 for (i = 0; i < elem_rows.length; i++) {
1507                         if (elem_rows[i].hasClassName("Selected")) {
1508                                 var bare_id = elem_rows[i].id.replace(/^[A-Z]*?-/, "");
1509                                 rows.push(bare_id);
1510                         }
1511                 }
1512
1513         } catch (e) {
1514                 exception_error("getSelectedTableRowIds", e);
1515         }
1516
1517         return rows;
1518 }
1519