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                 var ebc = $("xebContent");
  31
  32                 if (ebc) {
  33
  34                         Element.show("dialog_overlay");
  35                         Element.show("errorBoxShadow");
  36
  37                         if (ext_info) {
  38                                 if (ext_info.responseText) {
  39                                         ext_info = ext_info.responseText;
  40                                 }
  41                         }
  42
  43                         ebc.innerHTML =
  44                                 "<div><b>Error message:</b></div>" +
  45                                 "<pre>" + msg + "</pre>";
  46
  47                         if (ext_info) {
  48                                 ebc.innerHTML += "<div><b>Additional information:</b></div>" +
  49                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  50                         }
  51
  52                         ebc.innerHTML += "<div><b>Stack trace:</b></div>" +
  53                                 "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  54
  55                 } else {
  56                         alert(msg);
  57                 }
  58
  59         } catch (e) {
  60                 alert(msg);
  61
  62         }
  63
  64 }
  65
  66 function format_exception_error(location, e) {
  67         var msg;
  68
  69         if (e.fileName) {
  70                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  71
  72                 msg = "Exception: " + e.name + ", " + e.message +
  73                         "\nFunction: " + location + "()" +
  74                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  75
  76         } else if (e.description) {
  77                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  78         } else {
  79                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  80         }
  81
  82         console.error("EXCEPTION: " + msg);
  83
  84         return msg;
  85 }
  86
  87
  88 function disableHotkeys() {
  89         hotkeys_enabled = false;
  90 }
  91
  92 function enableHotkeys() {
  93         hotkeys_enabled = true;
  94 }
  95
  96 function param_escape(arg) {
  97         if (typeof encodeURIComponent != 'undefined')
  98                 return encodeURIComponent(arg);
  99         else
 100                 return escape(arg);
 101 }
 102
 103 function param_unescape(arg) {
 104         if (typeof decodeURIComponent != 'undefined')
 105                 return decodeURIComponent(arg);
 106         else
 107                 return unescape(arg);
 108 }
 109
 110 var notify_hide_timerid = false;
 111
 112 function hide_notify() {
 113         var n = $("notify");
 114         if (n) {
 115                 n.style.display = "none";
 116         }
 117 }
 118
 119 function notify_silent_next() {
 120         notify_silent = true;
 121 }
 122
 123 function notify_real(msg, no_hide, n_type) {
 124
 125         if (notify_silent) {
 126                 notify_silent = false;
 127                 return;
 128         }
 129
 130         var n = $("notify");
 131         var nb = $("notify_body");
 132
 133         if (!n || !nb) return;
 134
 135         if (notify_hide_timerid) {
 136                 window.clearTimeout(notify_hide_timerid);
 137         }
 138
 139         if (msg == "") {
 140                 if (n.style.display == "block") {
 141                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 142                 }
 143                 return;
 144         } else {
 145                 n.style.display = "block";
 146         }
 147
 148         /* types:
 149
 150                 1 - generic
 151                 2 - progress
 152                 3 - error
 153                 4 - info
 154
 155         */
 156
 157         if (typeof __ != 'undefined') {
 158                 msg = __(msg);
 159         }
 160
 161         if (n_type == 1) {
 162                 n.className = "notify";
 163         } else if (n_type == 2) {
 164                 n.className = "notifyProgress";
 165                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 166         } else if (n_type == 3) {
 167                 n.className = "notifyError";
 168                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 169         } else if (n_type == 4) {
 170                 n.className = "notifyInfo";
 171                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 172         }
 173
 174 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 175
 176         nb.innerHTML = msg;
 177
 178         if (!no_hide) {
 179                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 180         }
 181 }
 182
 183 function notify(msg, no_hide) {
 184         notify_real(msg, no_hide, 1);
 185 }
 186
 187 function notify_progress(msg, no_hide) {
 188         notify_real(msg, no_hide, 2);
 189 }
 190
 191 function notify_error(msg, no_hide) {
 192         notify_real(msg, no_hide, 3);
 193
 194 }
 195
 196 function notify_info(msg, no_hide) {
 197         notify_real(msg, no_hide, 4);
 198 }
 199
 200 function cleanSelected(element) {
 201         var content = $(element);
 202
 203         for (i = 0; i < content.rows.length; i++) {
 204                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 205         }
 206 }
 207
 208 function setCookie(name, value, lifetime, path, domain, secure) {
 209
 210         var d = false;
 211
 212         if (lifetime) {
 213                 d = new Date();
 214                 d.setTime(d.getTime() + (lifetime * 1000));
 215         }
 216
 217         console.log("setCookie: " + name + " => " + value + ": " + d);
 218
 219         int_setCookie(name, value, d, path, domain, secure);
 220
 221 }
 222
 223 function int_setCookie(name, value, expires, path, domain, secure) {
 224         document.cookie= name + "=" + escape(value) +
 225                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 226                 ((path) ? "; path=" + path : "") +
 227                 ((domain) ? "; domain=" + domain : "") +
 228                 ((secure) ? "; secure" : "");
 229 }
 230
 231 function delCookie(name, path, domain) {
 232         if (getCookie(name)) {
 233                 document.cookie = name + "=" +
 234                 ((path) ? ";path=" + path : "") +
 235                 ((domain) ? ";domain=" + domain : "" ) +
 236                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 237         }
 238 }
 239
 240
 241 function getCookie(name) {
 242
 243         var dc = document.cookie;
 244         var prefix = name + "=";
 245         var begin = dc.indexOf("; " + prefix);
 246         if (begin == -1) {
 247             begin = dc.indexOf(prefix);
 248             if (begin != 0) return null;
 249         }
 250         else {
 251             begin += 2;
 252         }
 253         var end = document.cookie.indexOf(";", begin);
 254         if (end == -1) {
 255             end = dc.length;
 256         }
 257         return unescape(dc.substring(begin + prefix.length, end));
 258 }
 259
 260 function gotoPreferences() {
 261         document.location.href = "prefs.php";
 262 }
 263
 264 function gotoMain() {
 265         document.location.href = "tt-rss.php";
 266 }
 267
 268 function gotoExportOpml() {
 269         document.location.href = "opml.php?op=Export";
 270 }
 271
 272
 273 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 274   * * @author Sundar Dorai-Raj
 275   * * Email: sdoraira@vt.edu
 276   * * This program is free software; you can redistribute it and/or
 277   * * modify it under the terms of the GNU General Public License
 278   * * as published by the Free Software Foundation; either version 2
 279   * * of the License, or (at your option) any later version,
 280   * * provided that any use properly credits the author.
 281   * * This program is distributed in the hope that it will be useful,
 282   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 283   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 284   * * GNU General Public License for more details at http://www.gnu.org * * */
 285
 286   var numbers=".0123456789";
 287   function isNumeric(x) {
 288     // is x a String or a character?
 289     if(x.length>1) {
 290       // remove negative sign
 291       x=Math.abs(x)+"";
 292       for(j=0;j<x.length;j++) {
 293         // call isNumeric recursively for each character
 294         number=isNumeric(x.substring(j,j+1));
 295         if(!number) return number;
 296       }
 297       return number;
 298     }
 299     else {
 300       // if x is number return true
 301       if(numbers.indexOf(x)>=0) return true;
 302       return false;
 303     }
 304   }
 305
 306
 307 function toggleSelectRowById(sender, id) {
 308         var row = $(id);
 309
 310         if (sender.checked) {
 311                 if (!row.className.match("Selected")) {
 312                         row.className = row.className + "Selected";
 313                 }
 314         } else {
 315                 if (row.className.match("Selected")) {
 316                         row.className = row.className.replace("Selected", "");
 317                 }
 318         }
 319 }
 320
 321 function toggleSelectListRow(sender) {
 322         var parent_row = sender.parentNode;
 323
 324         if (sender.checked) {
 325                 if (!parent_row.className.match("Selected")) {
 326                         parent_row.className = parent_row.className + "Selected";
 327                 }
 328         } else {
 329                 if (parent_row.className.match("Selected")) {
 330                         parent_row.className = parent_row.className.replace("Selected", "");
 331                 }
 332         }
 333 }
 334
 335 function tSR(sender) {
 336         return toggleSelectRow(sender);
 337 }
 338
 339 function toggleSelectRow(sender) {
 340         var parent_row = sender.parentNode.parentNode;
 341
 342         if (sender.checked) {
 343                 if (!parent_row.className.match("Selected")) {
 344                         parent_row.className = parent_row.className + "Selected";
 345                 }
 346         } else {
 347                 if (parent_row.className.match("Selected")) {
 348                         parent_row.className = parent_row.className.replace("Selected", "");
 349                 }
 350         }
 351 }
 352
 353 function checkboxToggleElement(elem, id) {
 354         if (elem.checked) {
 355                 Effect.Appear(id, {duration : 0.5});
 356         } else {
 357                 Effect.Fade(id, {duration : 0.5});
 358         }
 359 }
 360
 361 function dropboxSelect(e, v) {
 362         for (i = 0; i < e.length; i++) {
 363                 if (e[i].value == v) {
 364                         e.selectedIndex = i;
 365                         break;
 366                 }
 367         }
 368 }
 369
 370 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 371 // bugfixed just a little bit :-)
 372 function getURLParam(strParamName){
 373   var strReturn = "";
 374   var strHref = window.location.href;
 375
 376   if (strHref.indexOf("#") == strHref.length-1) {
 377                 strHref = strHref.substring(0, strHref.length-1);
 378   }
 379
 380   if ( strHref.indexOf("?") > -1 ){
 381     var strQueryString = strHref.substr(strHref.indexOf("?"));
 382     var aQueryString = strQueryString.split("&");
 383     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 384       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 385         var aParam = aQueryString[iParam].split("=");
 386         strReturn = aParam[1];
 387         break;
 388       }
 389     }
 390   }
 391   return strReturn;
 392 }
 393
 394 function leading_zero(p) {
 395         var s = String(p);
 396         if (s.length == 1) s = "0" + s;
 397         return s;
 398 }
 399
 400 function make_timestamp() {
 401         var d = new Date();
 402
 403         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
 404                         ":" + leading_zero(d.getSeconds());
 405 }
 406
 407
 408 function closeErrorBox() {
 409
 410         if (Element.visible("errorBoxShadow")) {
 411                 Element.hide("dialog_overlay");
 412                 Element.hide("errorBoxShadow");
 413
 414                 enableHotkeys();
 415         }
 416
 417         return false;
 418 }
 419
 420 function closeInfoBox(cleanup) {
 421
 422         try {
 423                 enableHotkeys();
 424
 425                 if (Element.visible("infoBoxShadow")) {
 426                         Element.hide("dialog_overlay");
 427                         Element.hide("infoBoxShadow");
 428
 429                         if (cleanup) $("infoBox").innerHTML = "&nbsp;";
 430                 }
 431         } catch (e) {
 432                 exception_error("closeInfoBox", e);
 433         }
 434
 435         return false;
 436 }
 437
 438
 439 function displayDlg(id, param, callback) {
 440
 441         notify_progress("Loading, please wait...", true);
 442
 443         disableHotkeys();
 444
 445         var query = "?op=dlg&id=" +
 446                 param_escape(id) + "&param=" + param_escape(param);
 447
 448         new Ajax.Request("backend.php", {
 449                 parameters: query,
 450                 onComplete: function (transport) {
 451                         infobox_callback2(transport);
 452                         if (callback) callback(transport);
 453                 } });
 454
 455         return false;
 456 }
 457
 458 function infobox_submit_callback2(transport) {
 459         closeInfoBox();
 460
 461         try {
 462                 // called from prefs, reload tab
 463                 if (typeof active_tab != 'undefined' && active_tab) {
 464                         selectTab(active_tab, false);
 465                 }
 466         } catch (e) { }
 467
 468         if (transport.responseText) {
 469                 notify_info(transport.responseText);
 470         }
 471 }
 472
 473 function infobox_callback2(transport) {
 474         try {
 475
 476                 console.log("infobox_callback2");
 477
 478                 var box = $('infoBox');
 479
 480                 if (box) {
 481
 482                         if (!getInitParam("infobox_disable_overlay")) {
 483                                 Element.show("dialog_overlay");
 484                         }
 485
 486                         box.innerHTML=transport.responseText;
 487                         Element.show("infoBoxShadow");
 488                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
 489
 490
 491                 }
 492
 493                 disableHotkeys();
 494
 495                 notify("");
 496         } catch (e) {
 497                 exception_error("infobox_callback2", e);
 498         }
 499 }
 500
 501 function createFilter() {
 502
 503         try {
 504
 505                 var form = document.forms['filter_add_form'];
 506                 var reg_exp = form.reg_exp.value;
 507
 508                 if (reg_exp == "") {
 509                         alert(__("Can't add filter: nothing to match on."));
 510                         return false;
 511                 }
 512
 513                 var query = "?op=rpc&subop=verifyRegexp&reg_exp=" + param_escape(reg_exp);
 514
 515                 notify_progress("Verifying regular expression...");
 516
 517                 new Ajax.Request("backend.php", {
 518                                 parameters: query,
 519                                 onComplete: function(transport) {
 520                                         handle_rpc_reply(transport);
 521
 522                                         var response = transport.responseXML;
 523
 524                                         if (response) {
 525                                                 var s = response.getElementsByTagName("status")[0].firstChild.nodeValue;
 526
 527                                                 notify('');
 528
 529                                                 if (s == "INVALID") {
 530                                                         alert("Match regular expression seems to be invalid.");
 531                                                         return;
 532                                                 } else {
 533
 534                                                         var query = Form.serialize("filter_add_form");
 535
 536                                                         // we can be called from some other tab in Prefs
 537                                                         if (typeof active_tab != 'undefined' && active_tab) {
 538                                                                 active_tab = "filterConfig";
 539                                                         }
 540
 541                                                         new Ajax.Request("backend.php?" + query, {
 542                                                                 onComplete: function (transport) {
 543                                                                         infobox_submit_callback2(transport);
 544                                                                 } });
 545
 546                                                         return true;
 547                                                 }
 548                                         }
 549
 550                         } });
 551
 552         } catch (e) {
 553                 exception_error("createFilter", e);
 554         }
 555 }
 556
 557 function isValidURL(s) {
 558         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
 559 }
 560
 561 function subscribeToFeed() {
 562
 563         try {
 564
 565         var form = document.forms['feed_add_form'];
 566         var feed_url = form.feed_url.value;
 567
 568         if (feed_url == "") {
 569                 alert(__("Can't subscribe: no feed URL given."));
 570                 return false;
 571         }
 572
 573         notify_progress(__("Subscribing to feed..."), true);
 574
 575         var query = Form.serialize("feed_add_form");
 576
 577         console.log("subscribe q: " + query);
 578
 579         Form.disable("feed_add_form");
 580
 581         new Ajax.Request("backend.php", {
 582                 parameters: query,
 583                 onComplete: function(transport) {
 584                         //dlg_frefresh_callback(transport);
 585
 586                         try {
 587
 588                                 if (!transport.responseXML)
 589                                         console.log(transport.responseText);
 590
 591                                 var result = transport.responseXML.getElementsByTagName('result')[0];
 592                                 var rc = parseInt(result.getAttribute('code'));
 593
 594                                 Form.enable("feed_add_form");
 595
 596                                 notify('');
 597
 598                                 switch (rc) {
 599                                 case 1:
 600                                         closeInfoBox();
 601                                         notify_info(__("Subscribed to %s").replace("%s", feed_url));
 602
 603                                         if (inPreferences()) {
 604                                                 updateFeedList();
 605                                         } else {
 606                                                 setTimeout('updateFeedList(false, false)', 50);
 607                                         }
 608                                         break;
 609                                 case 2:
 610                                         alert(__("Specified URL seems to be invalid."));
 611                                         break;
 612                                 case 3:
 613                                         alert(__("Specified URL doesn't seem to contain any feeds."));
 614                                         break;
 615                                 case 4:
 616                                         new Ajax.Request("backend.php", {
 617                                                 parameters: 'op=rpc&subop=extractfeedurls&url=' + encodeURIComponent(feed_url),
 618                                                 onComplete: function(transport) {
 619                                                         var result = transport.responseXML.getElementsByTagName('urls')[0];
 620                                                         var feeds = JSON.parse(result.firstChild.nodeValue);
 621                                                         var select = document.getElementById("faad_feeds_container_select");
 622
 623                                                         while (select.hasChildNodes()) {
 624                                                                 select.removeChild(elem.firstChild);
 625                                                         }
 626                                                         var count = 0;
 627                                                         for (var feedUrl in feeds) {
 628                                                                 select.insert(new Option(feeds[feedUrl], feedUrl, false));
 629                                                                 count++;
 630                                                         }
 631                                                         if (count > 5) count = 5;
 632                                                         select.size = count;
 633
 634                                                         Effect.Appear('fadd_feeds_container', {duration : 0.5});
 635                                                 }
 636                                         });
 637                                         break;
 638                                 case 5:
 639                                         alert(__("Couldn't download the specified URL."));
 640                                         break;
 641                                 case 0:
 642                                         alert(__("You are already subscribed to this feed."));
 643                                         break;
 644                                 }
 645
 646                         } catch (e) {
 647                                 exception_error("subscribeToFeed", e);
 648                         }
 649
 650                 } });
 651
 652         } catch (e) {
 653                 exception_error("subscribeToFeed", e);
 654         }
 655
 656         return false;
 657 }
 658
 659 function filterCR(e, f)
 660 {
 661      var key;
 662
 663      if(window.event)
 664           key = window.event.keyCode;     //IE
 665      else
 666           key = e.which;     //firefox
 667
 668         if (key == 13) {
 669                 if (typeof f != 'undefined') {
 670                         f();
 671                         return false;
 672                 } else {
 673                         return false;
 674                 }
 675         } else {
 676                 return true;
 677         }
 678 }
 679
 680 function getInitParam(key) {
 681         return init_params[key];
 682 }
 683
 684 function setInitParam(key, value) {
 685         init_params[key] = value;
 686 }
 687
 688 function fatalError(code, msg, ext_info) {
 689         try {
 690
 691                 if (!ext_info) ext_info = "N/A";
 692
 693                 if (code == 6) {
 694                         window.location.href = "tt-rss.php";
 695                 } else if (code == 5) {
 696                         window.location.href = "db-updater.php";
 697                 } else {
 698
 699                         if (msg == "") msg = "Unknown error";
 700
 701                         var ebc = $("xebContent");
 702
 703                         if (ebc) {
 704
 705                                 Element.show("dialog_overlay");
 706                                 Element.show("errorBoxShadow");
 707                                 Element.hide("xebBtn");
 708
 709                                 if (ext_info) {
 710                                         if (ext_info.responseText) {
 711                                                 ext_info = ext_info.responseText;
 712                                         }
 713                                 }
 714
 715                                 ebc.innerHTML =
 716                                         "<div><b>Error message:</b></div>" +
 717                                         "<pre>" + msg + "</pre>" +
 718                                         "<div><b>Additional information:</b></div>" +
 719                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
 720                         }
 721                 }
 722
 723         } catch (e) {
 724                 exception_error("fatalError", e);
 725         }
 726 }
 727
 728 function filterDlgCheckType(sender) {
 729
 730         try {
 731
 732                 var ftype = sender[sender.selectedIndex].value;
 733
 734                 var form = document.forms["filter_add_form"];
 735
 736                 if (!form) {
 737                         form = document.forms["filter_edit_form"];
 738                 }
 739
 740                 if (!form) {
 741                         console.log("filterDlgCheckType: can't find form!");
 742                         return;
 743                 }
 744
 745                 // if selected filter type is 5 (Date) enable the modifier dropbox
 746                 if (ftype == 5) {
 747                         Element.show("filter_dlg_date_mod_box");
 748                         Element.show("filter_dlg_date_chk_box");
 749                 } else {
 750                         Element.hide("filter_dlg_date_mod_box");
 751                         Element.hide("filter_dlg_date_chk_box");
 752
 753                 }
 754
 755         } catch (e) {
 756                 exception_error("filterDlgCheckType", e);
 757         }
 758
 759 }
 760
 761 function filterDlgCheckAction(sender) {
 762
 763         try {
 764
 765                 var action = sender[sender.selectedIndex].value;
 766
 767                 var form = document.forms["filter_add_form"];
 768
 769                 if (!form) {
 770                         form = document.forms["filter_edit_form"];
 771                 }
 772
 773                 if (!form) {
 774                         console.log("filterDlgCheckAction: can't find form!");
 775                         return;
 776                 }
 777
 778                 var action_param = $("filter_dlg_param_box");
 779
 780                 if (!action_param) {
 781                         console.log("filterDlgCheckAction: can't find action param box!");
 782                         return;
 783                 }
 784
 785                 // if selected action supports parameters, enable params field
 786                 if (action == 4 || action == 6 || action == 7) {
 787                         Element.show(action_param);
 788                         if (action != 7) {
 789                                 Element.show(form.action_param);
 790                                 Element.hide(form.action_param_label);
 791                         } else {
 792                                 Element.show(form.action_param_label);
 793                                 Element.hide(form.action_param);
 794                         }
 795                 } else {
 796                         Element.hide(action_param);
 797                 }
 798
 799         } catch (e) {
 800                 exception_error("filterDlgCheckAction", e);
 801         }
 802
 803 }
 804
 805 function filterDlgCheckDate() {
 806         try {
 807                 var form = document.forms["filter_add_form"];
 808
 809                 if (!form) {
 810                         form = document.forms["filter_edit_form"];
 811                 }
 812
 813                 if (!form) {
 814                         console.log("filterDlgCheckAction: can't find form!");
 815                         return;
 816                 }
 817
 818                 var reg_exp = form.reg_exp.value;
 819
 820                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
 821
 822                 new Ajax.Request("backend.php", {
 823                         parameters: query,
 824                         onComplete: function(transport) {
 825
 826                                 var form = document.forms["filter_add_form"];
 827
 828                                 if (!form) {
 829                                         form = document.forms["filter_edit_form"];
 830                                 }
 831
 832                                 if (transport.responseXML) {
 833                                         var result = transport.responseXML.getElementsByTagName("result")[0];
 834
 835                                         if (result && result.firstChild) {
 836                                                 if (result.firstChild.nodeValue == "1") {
 837
 838                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
 839
 840                                                         return;
 841                                                 }
 842                                         }
 843                                 }
 844
 845                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
 846
 847                         } });
 848
 849
 850         } catch (e) {
 851                 exception_error("filterDlgCheckDate", e);
 852         }
 853 }
 854
 855 function explainError(code) {
 856         return displayDlg("explainError", code);
 857 }
 858
 859 function displayHelpInfobox(topic_id) {
 860
 861         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
 862
 863         var w = window.open(url, "ttrss_help",
 864                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
 865
 866 }
 867
 868 function loading_set_progress(p) {
 869         try {
 870                 if (p < last_progress_point || !Element.visible("overlay")) return;
 871
 872                 console.log("loading_set_progress : " + p + " (" + last_progress_point + ")");
 873
 874                 var o = $("l_progress_i");
 875
 876 //              o.style.width = (p * 2) + "px";
 877
 878                 new Effect.Scale(o, p, {
 879                         scaleY : false,
 880                         scaleFrom : last_progress_point,
 881                         scaleMode: { originalWidth : 200 },
 882                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
 883
 884                 last_progress_point = p;
 885
 886         } catch (e) {
 887                 exception_error("loading_set_progress", e);
 888         }
 889 }
 890
 891 function remove_splash() {
 892         if (Element.visible("overlay")) {
 893                 console.log("about to remove splash, OMG!");
 894                 Element.hide("overlay");
 895                 console.log("removed splash!");
 896         }
 897 }
 898
 899 function getSelectedFeedsFromBrowser() {
 900
 901         var list = $("browseFeedList");
 902
 903         var selected = new Array();
 904
 905         for (i = 0; i < list.childNodes.length; i++) {
 906                 var child = list.childNodes[i];
 907                 if (child.id && child.id.match("FBROW-")) {
 908                         var id = child.id.replace("FBROW-", "");
 909
 910                         var cb = $("FBCHK-" + id);
 911
 912                         if (cb.checked) {
 913                                 selected.push(id);
 914                         }
 915                 }
 916         }
 917
 918         return selected;
 919 }
 920
 921 function updateFeedBrowser() {
 922         try {
 923
 924                 var query = Form.serialize("feed_browser");
 925
 926                 Element.show('feed_browser_spinner');
 927
 928                 new Ajax.Request("backend.php", {
 929                         parameters: query,
 930                         onComplete: function(transport) {
 931                                 notify('');
 932
 933                                 Element.hide('feed_browser_spinner');
 934
 935                                 var c = $("browseFeedList");
 936                                 var r = transport.responseXML.getElementsByTagName("content")[0];
 937                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
 938                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
 939
 940                                 if (c && r) {
 941                                         c.innerHTML = r.firstChild.nodeValue;
 942                                 }
 943
 944                                 if (parseInt(mode.getAttribute("value")) == 2) {
 945                                         Element.show('feed_archive_remove');
 946                                 } else {
 947                                         Element.hide('feed_archive_remove');
 948                                 }
 949
 950                         } });
 951
 952         } catch (e) {
 953                 exception_error("updateFeedBrowser", e);
 954         }
 955
 956 }
 957
 958 function transport_error_check(transport) {
 959         try {
 960                 if (transport.responseXML) {
 961                         var error = transport.responseXML.getElementsByTagName("error")[0];
 962
 963                         if (error) {
 964                                 var code = error.getAttribute("error-code");
 965                                 var msg = error.getAttribute("error-msg");
 966                                 if (code != 0) {
 967                                         fatalError(code, msg);
 968                                         return false;
 969                                 }
 970                         }
 971                 }
 972         } catch (e) {
 973                 exception_error("check_for_error_xml", e);
 974         }
 975         return true;
 976 }
 977
 978 function strip_tags(s) {
 979         return s.replace(/<\/?[^>]+(>|$)/g, "");
 980 }
 981
 982 function truncate_string(s, length) {
 983         if (!length) length = 30;
 984         var tmp = s.substring(0, length);
 985         if (s.length > length) tmp += "&hellip;";
 986         return tmp;
 987 }
 988
 989 function hotkey_prefix_timeout() {
 990         try {
 991
 992                 var date = new Date();
 993                 var ts = Math.round(date.getTime() / 1000);
 994
 995                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
 996                         console.log("hotkey_prefix seems to be stuck, aborting");
 997                         hotkey_prefix_pressed = false;
 998                         hotkey_prefix = false;
 999                         Element.hide('cmdline');
1000                 }
1001
1002                 setTimeout("hotkey_prefix_timeout()", 1000);
1003
1004         } catch  (e) {
1005                 exception_error("hotkey_prefix_timeout", e);
1006         }
1007 }
1008
1009 function hideAuxDlg() {
1010         try {
1011                 Element.hide('auxDlg');
1012         } catch (e) {
1013                 exception_error("hideAuxDlg", e);
1014         }
1015 }
1016
1017 function feedBrowserSubscribe() {
1018         try {
1019
1020                 var selected = getSelectedFeedsFromBrowser();
1021
1022                 var mode = document.forms['feed_browser'].mode;
1023
1024                 mode = mode[mode.selectedIndex].value;
1025
1026                 if (selected.length > 0) {
1027                         closeInfoBox();
1028
1029                         notify_progress("Loading, please wait...", true);
1030
1031                         var query = "?op=rpc&subop=massSubscribe&ids="+
1032                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1033
1034                         new Ajax.Request("backend.php", {
1035                                 parameters: query,
1036                                 onComplete: function(transport) {
1037
1038                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1039                                         var nf_value = nf.getAttribute("value");
1040
1041                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1042
1043                                         if (inPreferences()) {
1044                                                 updateFeedList();
1045                                         } else {
1046                                                 setTimeout('updateFeedList(false, false)', 50);
1047                                         }
1048                                 } });
1049
1050                 } else {
1051                         alert(__("No feeds are selected."));
1052                 }
1053
1054         } catch (e) {
1055                 exception_error("feedBrowserSubscribe", e);
1056         }
1057 }
1058
1059 function feedArchiveRemove() {
1060         try {
1061
1062                 var selected = getSelectedFeedsFromBrowser();
1063
1064                 if (selected.length > 0) {
1065
1066                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1067
1068                         if (confirm(pr)) {
1069                                 Element.show('feed_browser_spinner');
1070
1071                                 var query = "?op=rpc&subop=remarchived&ids=" +
1072                                         param_escape(selected.toString());;
1073
1074                                 new Ajax.Request("backend.php", {
1075                                         parameters: query,
1076                                         onComplete: function(transport) {
1077                                                 updateFeedBrowser();
1078                                         } });
1079                         }
1080
1081                 } else {
1082                         alert(__("No feeds are selected."));
1083                 }
1084
1085         } catch (e) {
1086                 exception_error("feedArchiveRemove", e);
1087         }
1088 }
1089
1090 function uploadIconHandler(rc) {
1091         try {
1092                 switch (rc) {
1093                         case 0:
1094                                 notify_info("Upload complete.");
1095                                 if (inPreferences()) {
1096                                         updateFeedList();
1097                                 } else {
1098                                         setTimeout('updateFeedList(false, false)', 50);
1099                                 }
1100                                 break;
1101                         case 1:
1102                                 notify_error("Upload failed: icon is too big.");
1103                                 break;
1104                         case 2:
1105                                 notify_error("Upload failed.");
1106                                 break;
1107                 }
1108
1109         } catch (e) {
1110                 exception_error("uploadIconHandler", e);
1111         }
1112 }
1113
1114 function removeFeedIcon(id) {
1115
1116         try {
1117
1118                 if (confirm(__("Remove stored feed icon?"))) {
1119                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
1120
1121                         console.log(query);
1122
1123                         notify_progress("Removing feed icon...", true);
1124
1125                         new Ajax.Request("backend.php", {
1126                                 parameters: query,
1127                                 onComplete: function(transport) {
1128                                         notify_info("Feed icon removed.");
1129                                         if (inPreferences()) {
1130                                                 updateFeedList();
1131                                         } else {
1132                                                 setTimeout('updateFeedList(false, false)', 50);
1133                                         }
1134                                 } });
1135                 }
1136
1137                 return false;
1138         } catch (e) {
1139                 exception_error("uploadFeedIcon", e);
1140         }
1141 }
1142
1143 function uploadFeedIcon() {
1144
1145         try {
1146
1147                 var file = $("icon_file");
1148
1149                 if (file.value.length == 0) {
1150                         alert(__("Please select an image file to upload."));
1151                 } else {
1152                         if (confirm(__("Upload new icon for this feed?"))) {
1153                                 notify_progress("Uploading, please wait...", true);
1154                                 return true;
1155                         }
1156                 }
1157
1158                 return false;
1159
1160         } catch (e) {
1161                 exception_error("uploadFeedIcon", e);
1162         }
1163 }
1164
1165 function addLabel(select, callback) {
1166
1167         try {
1168
1169                 var caption = prompt(__("Please enter label caption:"), "");
1170
1171                 if (caption != undefined) {
1172
1173                         if (caption == "") {
1174                                 alert(__("Can't create label: missing caption."));
1175                                 return false;
1176                         }
1177
1178                         var query = "?op=pref-labels&subop=add&caption=" +
1179                                 param_escape(caption);
1180
1181                         if (select)
1182                                 query += "&output=select";
1183
1184                         notify_progress("Loading, please wait...", true);
1185
1186                         if (inPreferences() && !select) active_tab = "labelConfig";
1187
1188                         new Ajax.Request("backend.php", {
1189                                 parameters: query,
1190                                 onComplete: function(transport) {
1191                                         if (callback) {
1192                                                 callback(transport);
1193                                         } else if (inPreferences()) {
1194                                                 infobox_submit_callback2(transport);
1195                                         } else {
1196                                                 updateFeedList();
1197                                         }
1198                         } });
1199
1200                 }
1201
1202         } catch (e) {
1203                 exception_error("addLabel", e);
1204         }
1205 }
1206
1207 function quickAddFeed() {
1208         displayDlg('quickAddFeed', '',
1209            function () {$('feed_url').focus();});
1210 }
1211
1212 function quickAddFilter() {
1213         displayDlg('quickAddFilter', '',
1214            function () {document.forms['filter_add_form'].reg_exp.focus();});
1215 }
1216
1217 function unsubscribeFeed(feed_id, title) {
1218
1219         var msg = __("Unsubscribe from %s?").replace("%s", title);
1220
1221         if (title == undefined || confirm(msg)) {
1222                 notify_progress("Removing feed...");
1223
1224                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
1225
1226                 new Ajax.Request("backend.php", {
1227                         parameters: query,
1228                         onComplete: function(transport) {
1229
1230                                         closeInfoBox();
1231
1232                                         if (inPreferences()) {
1233                                                 updateFeedList();
1234                                         } else {
1235                                                 dlg_frefresh_callback(transport, feed_id);
1236                                         }
1237
1238                                 } });
1239         }
1240
1241         return false;
1242 }
1243
1244
1245 function backend_sanity_check_callback(transport) {
1246
1247         try {
1248
1249                 if (sanity_check_done) {
1250                         fatalError(11, "Sanity check request received twice. This can indicate "+
1251                       "presence of Firebug or some other disrupting extension. "+
1252                                 "Please disable it and try again.");
1253                         return;
1254                 }
1255
1256                 if (!transport.responseXML) {
1257                         if (!store) {
1258                                 fatalError(3, "Sanity check: Received reply is not XML",
1259                                         transport.responseText);
1260                                 return;
1261                         } else {
1262                                 init_offline();
1263                                 return;
1264                         }
1265                 }
1266
1267                 if (getURLParam("offline")) {
1268                         return init_offline();
1269                 }
1270
1271                 var reply = transport.responseXML.getElementsByTagName("error")[0];
1272
1273                 if (!reply) {
1274                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
1275                         return;
1276                 }
1277
1278                 var error_code = reply.getAttribute("error-code");
1279
1280                 if (error_code && error_code != 0) {
1281                         return fatalError(error_code, reply.getAttribute("error-msg"));
1282                 }
1283
1284                 console.log("sanity check ok");
1285
1286                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
1287
1288                 if (params) {
1289                         console.log('reading init-params...');
1290
1291                         params = JSON.parse(params.firstChild.nodeValue);
1292
1293                         if (params) {
1294                                 for (k in params) {
1295
1296                                         var v = params[k];
1297
1298                                         console.log("IP: " + k + " => " + v);
1299
1300                                         if (db) {
1301                                                 db.execute("DELETE FROM init_params WHERE key = ?", [k]);
1302                                                 db.execute("INSERT INTO init_params (key,value) VALUES (?, ?)",
1303                                                         [k, v]);
1304                                         }
1305                                 }
1306                         }
1307
1308                         init_params = params;
1309                 }
1310
1311                 sanity_check_done = true;
1312
1313                 init_second_stage();
1314
1315         } catch (e) {
1316                 exception_error("backend_sanity_check_callback", e, transport);
1317         }
1318 }
1319
1320 function has_local_storage() {
1321         return false;
1322 /*      try {
1323                 return 'localStorage' in window && window['localStorage'] != null;
1324         } catch (e) {
1325                 return false;
1326         } */
1327 }
1328
1329 function catSelectOnChange(elem) {
1330         try {
1331                 var value = elem[elem.selectedIndex].value;
1332                 var def = elem.getAttribute('default');
1333
1334                 if (value == "ADD_CAT") {
1335
1336                         if (def)
1337                                 dropboxSelect(elem, def);
1338                         else
1339                                 elem.selectedIndex = 0;
1340
1341                         quickAddCat(elem);
1342                 }
1343
1344         } catch (e) {
1345                 exception_error("catSelectOnChange", e);
1346         }
1347 }
1348
1349 function quickAddCat(elem) {
1350         try {
1351                 var cat = prompt(__("Please enter category title:"));
1352
1353                 if (cat) {
1354
1355                         var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
1356
1357                         notify_progress("Loading, please wait...", true);
1358
1359                         new Ajax.Request("backend.php", {
1360                                 parameters: query,
1361                                 onComplete: function (transport) {
1362                                         var response = transport.responseXML;
1363                                         var select = response.getElementsByTagName("select")[0];
1364                                         var options = select.getElementsByTagName("option");
1365
1366                                         dropbox_replace_options(elem, options);
1367
1368                                         notify('');
1369
1370                         } });
1371
1372                 }
1373
1374         } catch (e) {
1375                 exception_error("quickAddCat", e);
1376         }
1377 }
1378
1379 function genUrlChangeKey(feed, is_cat) {
1380
1381         try {
1382                 var ok = confirm(__("Generate new syndication address for this feed?"));
1383
1384                 if (ok) {
1385
1386                         notify_progress("Trying to change address...", true);
1387
1388                         var query = "?op=rpc&subop=regenFeedKey&id=" + param_escape(feed) +
1389                                 "&is_cat=" + param_escape(is_cat);
1390
1391                         new Ajax.Request("backend.php", {
1392                                 parameters: query,
1393                                 onComplete: function(transport) {
1394                                                 var new_link = transport.responseXML.getElementsByTagName("link")[0];
1395
1396                                                 var e = $('gen_feed_url');
1397
1398                                                 if (new_link) {
1399
1400                                                         new_link = new_link.firstChild.nodeValue;
1401
1402                                                         e.innerHTML = e.innerHTML.replace(/\&amp;key=.*$/,
1403                                                                 "&amp;key=" + new_link);
1404
1405                                                         e.href = e.href.replace(/\&amp;key=.*$/,
1406                                                                 "&amp;key=" + new_link);
1407
1408                                                         new Effect.Highlight(e);
1409
1410                                                         notify('');
1411
1412                                                 } else {
1413                                                         notify_error("Could not change feed URL.");
1414                                                 }
1415                                 } });
1416                 }
1417         } catch (e) {
1418                 exception_error("genUrlChangeKey", e);
1419         }
1420         return false;
1421 }
1422
1423 function labelSelectOnChange(elem) {
1424         try {
1425                 var value = elem[elem.selectedIndex].value;
1426                 var def = elem.getAttribute('default');
1427
1428                 if (value == "ADD_LABEL") {
1429
1430                         if (def)
1431                                 dropboxSelect(elem, def);
1432                         else
1433                                 elem.selectedIndex = 0;
1434
1435                         addLabel(elem, function(transport) {
1436
1437                                         try {
1438
1439                                                 var response = transport.responseXML;
1440                                                 var select = response.getElementsByTagName("select")[0];
1441                                                 var options = select.getElementsByTagName("option");
1442
1443                                                 dropbox_replace_options(elem, options);
1444
1445                                                 notify('');
1446                                         } catch (e) {
1447                                                 exception_error("addLabel", e);
1448                                         }
1449                         });
1450                 }
1451
1452         } catch (e) {
1453                 exception_error("labelSelectOnChange", e);
1454         }
1455 }
1456
1457 function dropbox_replace_options(elem, options) {
1458
1459         try {
1460                 while (elem.hasChildNodes())
1461                         elem.removeChild(elem.firstChild);
1462
1463                 var sel_idx = -1;
1464
1465                 for (var i = 0; i < options.length; i++) {
1466                         var text = options[i].firstChild.nodeValue;
1467                         var value = options[i].getAttribute("value");
1468
1469                         if (value == undefined) value = text;
1470
1471                         var issel = options[i].getAttribute("selected") == "1";
1472
1473                         var option = new Option(text, value, issel);
1474
1475                         if (options[i].getAttribute("disabled"))
1476                                 option.setAttribute("disabled", true);
1477
1478                         elem.insert(option);
1479
1480                         if (issel) sel_idx = i;
1481                 }
1482
1483                 // Chrome doesn't seem to just select stuff when you pass new Option(x, y, true)
1484                 if (sel_idx >= 0) elem.selectedIndex = sel_idx;
1485
1486         } catch (e) {
1487                 exception_error("dropbox_replace_options", e);
1488         }
1489 }
1490
1491 // mode = all, none, invert
1492 function selectTableRows(id, mode) {
1493         try {
1494                 var rows = $(id).rows;
1495
1496                 for (var i = 0; i < rows.length; i++) {
1497                         var row = rows[i];
1498                         var cb = false;
1499
1500                         if (row.id && row.className) {
1501                                 var bare_id = row.id.replace(/^[A-Z]*?-/, "");
1502                                 var inputs = rows[i].getElementsByTagName("input");
1503
1504                                 for (var j = 0; j < inputs.length; j++) {
1505                                         var input = inputs[j];
1506
1507                                         if (input.getAttribute("type") == "checkbox" &&
1508                                                         input.id.match(bare_id)) {
1509
1510                                                 cb = input;
1511                                                 break;
1512                                         }
1513                                 }
1514
1515                                 if (cb) {
1516                                         var issel = row.className.match("Selected");
1517
1518                                         if (mode == "all" && !issel) {
1519                                                 row.className += "Selected";
1520                                                 cb.checked = true;
1521                                         } else if (mode == "none" && issel) {
1522                                                 row.className = row.className.replace("Selected", "");
1523                                                 cb.checked = false;
1524                                         } else if (mode == "invert") {
1525
1526                                                 if (issel) {
1527                                                         row.className = row.className.replace("Selected", "");
1528                                                         cb.checked = false;
1529                                                 } else {
1530                                                         row.className += "Selected";
1531                                                         cb.checked = true;
1532                                                 }
1533                                         }
1534                                 }
1535                         }
1536                 }
1537
1538         } catch (e) {
1539                 exception_error("selectTableRows", e);
1540
1541         }
1542 }
1543
1544 function getSelectedTableRowIds(id) {
1545         var rows = [];
1546
1547         try {
1548                 var elem_rows = $(id).rows;
1549
1550                 for (i = 0; i < elem_rows.length; i++) {
1551                         if (elem_rows[i].className.match("Selected")) {
1552                                 var bare_id = elem_rows[i].id.replace(/^[A-Z]*?-/, "");
1553                                 rows.push(bare_id);
1554                         }
1555                 }
1556
1557         } catch (e) {
1558                 exception_error("getSelectedTableRowIds", e);
1559         }
1560
1561         return rows;
1562 }
1563