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 var dialogs = [];
   6
   7 /* add method to remove element from array */
   8
   9 Array.prototype.remove = function(s) {
  10         for (var i=0; i < this.length; i++) {
  11                 if (s == this[i]) this.splice(i, 1);
  12         }
  13 }
  14
  15 /* create console.log if it doesn't exist */
  16
  17 if (!window.console) console = {};
  18 console.log = console.log || function(msg) { };
  19 console.warn = console.warn || function(msg) { };
  20 console.error = console.error || function(msg) { };
  21
  22 function exception_error(location, e, ext_info) {
  23         var msg = format_exception_error(location, e);
  24
  25         if (!ext_info) ext_info = false;
  26
  27         try {
  28
  29                 if (ext_info) {
  30                         if (ext_info.responseText) {
  31                                 ext_info = ext_info.responseText;
  32                         }
  33                 }
  34
  35                 var content = "<div class=\"fatalError\">" +
  36                         "<pre>" + msg + "</pre>";
  37
  38                 if (ext_info) {
  39                         content += "<div><b>Additional information:</b></div>" +
  40                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  41                 }
  42
  43                 content += "<div><b>Stack trace:</b></div>" +
  44                         "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  45
  46 //              content += "<div style='text-align : center'>" +
  47 //                      "<button onclick=\"closeInfoBox()\">" +
  48 //                      "Close this window" + "</button></div>";
  49
  50                 content += "</div>";
  51
  52                 // TODO: add code to automatically report errors to tt-rss.org
  53
  54                 var dialog = new dijit.Dialog({
  55                         title: "Unhandled exception",
  56                         style: "width: 600px",
  57                         content: content});
  58
  59                 dialog.show();
  60
  61         } catch (e) {
  62                 alert(msg);
  63         }
  64
  65 }
  66
  67 function format_exception_error(location, e) {
  68         var msg;
  69
  70         if (e.fileName) {
  71                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  72
  73                 msg = "Exception: " + e.name + ", " + e.message +
  74                         "\nFunction: " + location + "()" +
  75                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  76
  77         } else if (e.description) {
  78                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  79         } else {
  80                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  81         }
  82
  83         console.error("EXCEPTION: " + msg);
  84
  85         return msg;
  86 }
  87
  88
  89 function disableHotkeys() {
  90         hotkeys_enabled = false;
  91 }
  92
  93 function enableHotkeys() {
  94         hotkeys_enabled = true;
  95 }
  96
  97 function param_escape(arg) {
  98         if (typeof encodeURIComponent != 'undefined')
  99                 return encodeURIComponent(arg);
 100         else
 101                 return escape(arg);
 102 }
 103
 104 function param_unescape(arg) {
 105         if (typeof decodeURIComponent != 'undefined')
 106                 return decodeURIComponent(arg);
 107         else
 108                 return unescape(arg);
 109 }
 110
 111 var notify_hide_timerid = false;
 112
 113 function hide_notify() {
 114         var n = $("notify");
 115         if (n) {
 116                 n.style.display = "none";
 117         }
 118 }
 119
 120 function notify_silent_next() {
 121         notify_silent = true;
 122 }
 123
 124 function notify_real(msg, no_hide, n_type) {
 125
 126         if (notify_silent) {
 127                 notify_silent = false;
 128                 return;
 129         }
 130
 131         var n = $("notify");
 132         var nb = $("notify_body");
 133
 134         if (!n || !nb) return;
 135
 136         if (notify_hide_timerid) {
 137                 window.clearTimeout(notify_hide_timerid);
 138         }
 139
 140         if (msg == "") {
 141                 if (n.style.display == "block") {
 142                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 143                 }
 144                 return;
 145         } else {
 146                 n.style.display = "block";
 147         }
 148
 149         /* types:
 150
 151                 1 - generic
 152                 2 - progress
 153                 3 - error
 154                 4 - info
 155
 156         */
 157
 158         if (typeof __ != 'undefined') {
 159                 msg = __(msg);
 160         }
 161
 162         if (n_type == 1) {
 163                 n.className = "notify";
 164         } else if (n_type == 2) {
 165                 n.className = "notifyProgress";
 166                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 167         } else if (n_type == 3) {
 168                 n.className = "notifyError";
 169                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 170         } else if (n_type == 4) {
 171                 n.className = "notifyInfo";
 172                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 173         }
 174
 175 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 176
 177         nb.innerHTML = msg;
 178
 179         if (!no_hide) {
 180                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 181         }
 182 }
 183
 184 function notify(msg, no_hide) {
 185         notify_real(msg, no_hide, 1);
 186 }
 187
 188 function notify_progress(msg, no_hide) {
 189         notify_real(msg, no_hide, 2);
 190 }
 191
 192 function notify_error(msg, no_hide) {
 193         notify_real(msg, no_hide, 3);
 194
 195 }
 196
 197 function notify_info(msg, no_hide) {
 198         notify_real(msg, no_hide, 4);
 199 }
 200
 201 function setCookie(name, value, lifetime, path, domain, secure) {
 202
 203         var d = false;
 204
 205         if (lifetime) {
 206                 d = new Date();
 207                 d.setTime(d.getTime() + (lifetime * 1000));
 208         }
 209
 210         console.log("setCookie: " + name + " => " + value + ": " + d);
 211
 212         int_setCookie(name, value, d, path, domain, secure);
 213
 214 }
 215
 216 function int_setCookie(name, value, expires, path, domain, secure) {
 217         document.cookie= name + "=" + escape(value) +
 218                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 219                 ((path) ? "; path=" + path : "") +
 220                 ((domain) ? "; domain=" + domain : "") +
 221                 ((secure) ? "; secure" : "");
 222 }
 223
 224 function delCookie(name, path, domain) {
 225         if (getCookie(name)) {
 226                 document.cookie = name + "=" +
 227                 ((path) ? ";path=" + path : "") +
 228                 ((domain) ? ";domain=" + domain : "" ) +
 229                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 230         }
 231 }
 232
 233
 234 function getCookie(name) {
 235
 236         var dc = document.cookie;
 237         var prefix = name + "=";
 238         var begin = dc.indexOf("; " + prefix);
 239         if (begin == -1) {
 240             begin = dc.indexOf(prefix);
 241             if (begin != 0) return null;
 242         }
 243         else {
 244             begin += 2;
 245         }
 246         var end = document.cookie.indexOf(";", begin);
 247         if (end == -1) {
 248             end = dc.length;
 249         }
 250         return unescape(dc.substring(begin + prefix.length, end));
 251 }
 252
 253 function gotoPreferences() {
 254         document.location.href = "prefs.php";
 255 }
 256
 257 function gotoMain() {
 258         document.location.href = "tt-rss.php";
 259 }
 260
 261 function gotoExportOpml() {
 262         document.location.href = "opml.php?op=Export";
 263 }
 264
 265
 266 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 267   * * @author Sundar Dorai-Raj
 268   * * Email: sdoraira@vt.edu
 269   * * This program is free software; you can redistribute it and/or
 270   * * modify it under the terms of the GNU General Public License
 271   * * as published by the Free Software Foundation; either version 2
 272   * * of the License, or (at your option) any later version,
 273   * * provided that any use properly credits the author.
 274   * * This program is distributed in the hope that it will be useful,
 275   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 276   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 277   * * GNU General Public License for more details at http://www.gnu.org * * */
 278
 279   var numbers=".0123456789";
 280   function isNumeric(x) {
 281     // is x a String or a character?
 282     if(x.length>1) {
 283       // remove negative sign
 284       x=Math.abs(x)+"";
 285       for(j=0;j<x.length;j++) {
 286         // call isNumeric recursively for each character
 287         number=isNumeric(x.substring(j,j+1));
 288         if(!number) return number;
 289       }
 290       return number;
 291     }
 292     else {
 293       // if x is number return true
 294       if(numbers.indexOf(x)>=0) return true;
 295       return false;
 296     }
 297   }
 298
 299
 300 function toggleSelectRowById(sender, id) {
 301         var row = $(id);
 302         return toggleSelectRow(sender, row);
 303 }
 304
 305 function toggleSelectListRow(sender) {
 306         var row = sender.parentNode;
 307         return toggleSelectRow(sender, row);
 308 }
 309
 310 function tSR(sender, row) {
 311         return toggleSelectRow(sender, row);
 312 }
 313
 314 function toggleSelectRow(sender, row) {
 315
 316         if (!row) row = sender.parentNode.parentNode;
 317
 318         if (sender.checked && !row.hasClassName('Selected'))
 319                 row.addClassName('Selected');
 320         else
 321                 row.removeClassName('Selected');
 322 }
 323
 324 function checkboxToggleElement(elem, id) {
 325         if (elem.checked) {
 326                 Effect.Appear(id, {duration : 0.5});
 327         } else {
 328                 Effect.Fade(id, {duration : 0.5});
 329         }
 330 }
 331
 332 function dropboxSelect(e, v) {
 333         for (i = 0; i < e.length; i++) {
 334                 if (e[i].value == v) {
 335                         e.selectedIndex = i;
 336                         break;
 337                 }
 338         }
 339 }
 340
 341 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 342 // bugfixed just a little bit :-)
 343 function getURLParam(strParamName){
 344   var strReturn = "";
 345   var strHref = window.location.href;
 346
 347   if (strHref.indexOf("#") == strHref.length-1) {
 348                 strHref = strHref.substring(0, strHref.length-1);
 349   }
 350
 351   if ( strHref.indexOf("?") > -1 ){
 352     var strQueryString = strHref.substr(strHref.indexOf("?"));
 353     var aQueryString = strQueryString.split("&");
 354     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 355       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 356         var aParam = aQueryString[iParam].split("=");
 357         strReturn = aParam[1];
 358         break;
 359       }
 360     }
 361   }
 362   return strReturn;
 363 }
 364
 365 function leading_zero(p) {
 366         var s = String(p);
 367         if (s.length == 1) s = "0" + s;
 368         return s;
 369 }
 370
 371 function make_timestamp() {
 372         var d = new Date();
 373
 374         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
 375                         ":" + leading_zero(d.getSeconds());
 376 }
 377
 378
 379 function closeErrorBox() {
 380
 381         if (Element.visible("errorBoxShadow")) {
 382                 Element.hide("dialog_overlay");
 383                 Element.hide("errorBoxShadow");
 384
 385                 enableHotkeys();
 386         }
 387
 388         return false;
 389 }
 390
 391 function closeInfoBox(cleanup) {
 392         try {
 393                 enableHotkeys();
 394
 395                 var dialog = dialogs.pop();
 396
 397                 if (dialog)
 398                         dialog.hide();
 399
 400         } catch (e) {
 401                 //exception_error("closeInfoBox", e);
 402         }
 403         return false;
 404 }
 405
 406
 407 function displayDlg(id, param, callback) {
 408
 409         notify_progress("Loading, please wait...", true);
 410
 411         var query = "?op=dlg&id=" +
 412                 param_escape(id) + "&param=" + param_escape(param);
 413
 414         new Ajax.Request("backend.php", {
 415                 parameters: query,
 416                 onComplete: function (transport) {
 417                         infobox_callback2(transport);
 418                         if (callback) callback(transport);
 419                 } });
 420
 421         return false;
 422 }
 423
 424 function infobox_submit_callback2(transport) {
 425         closeInfoBox();
 426
 427         try {
 428                 // called from prefs, reload tab
 429                 if (typeof active_tab != 'undefined' && active_tab) {
 430                         selectTab(active_tab, false);
 431                 }
 432         } catch (e) { }
 433
 434         if (transport.responseText) {
 435                 notify_info(transport.responseText);
 436         }
 437 }
 438
 439 function infobox_callback2(transport) {
 440         try {
 441
 442                 //console.log("infobox_callback2");
 443                 notify('');
 444
 445                 var content;
 446                 var dtitle = "Dialog";
 447
 448                 if (transport.responseXML) {
 449                         var dlg = transport.responseXML.getElementsByTagName("dlg")[0];
 450
 451                         var title = transport.responseXML.getElementsByTagName("title")[0];
 452                         if (title)
 453                                 title = title.firstChild.nodeValue;
 454
 455                         var content = transport.responseXML.getElementsByTagName("content")[0];
 456
 457                         content = content.firstChild.nodeValue;
 458
 459                 } else {
 460                         content = transport.responseText;
 461                 }
 462
 463                 var dialog = new dijit.Dialog({
 464                         title: title,
 465                         style: "width: 600px",
 466                         onCancel: function() {
 467                                 dialogs.remove(this);
 468                                 return true;
 469                         },
 470                         onExecute: function() {
 471                                 dialogs.remove(this);
 472                                 return true;
 473                         },
 474                         onClose: function() {
 475                                 dialogs.remove(this);
 476                                 return true;
 477                         },
 478                         content: content});
 479
 480                 dialog.show();
 481
 482                 dialogs.push(dialog);
 483
 484                 notify("");
 485         } catch (e) {
 486                 exception_error("infobox_callback2", e);
 487         }
 488 }
 489
 490 function createFilter() {
 491
 492         try {
 493
 494                 var form = document.forms['filter_add_form'];
 495                 var reg_exp = form.reg_exp.value;
 496
 497                 if (reg_exp == "") {
 498                         alert(__("Can't add filter: nothing to match on."));
 499                         return false;
 500                 }
 501
 502                 var query = "?op=rpc&subop=verifyRegexp&reg_exp=" + param_escape(reg_exp);
 503
 504                 notify_progress("Verifying regular expression...");
 505
 506                 new Ajax.Request("backend.php", {
 507                                 parameters: query,
 508                                 onComplete: function(transport) {
 509                                         handle_rpc_reply(transport);
 510
 511                                         var response = transport.responseXML;
 512
 513                                         if (response) {
 514                                                 var s = response.getElementsByTagName("status")[0].firstChild.nodeValue;
 515
 516                                                 notify('');
 517
 518                                                 if (s == "INVALID") {
 519                                                         alert("Match regular expression seems to be invalid.");
 520                                                         return;
 521                                                 } else {
 522
 523                                                         var query = Form.serialize("filter_add_form");
 524
 525                                                         // we can be called from some other tab in Prefs
 526                                                         if (typeof active_tab != 'undefined' && active_tab) {
 527                                                                 active_tab = "filterConfig";
 528                                                         }
 529
 530                                                         new Ajax.Request("backend.php?" + query, {
 531                                                                 onComplete: function (transport) {
 532                                                                         infobox_submit_callback2(transport);
 533                                                                 } });
 534
 535                                                         return true;
 536                                                 }
 537                                         }
 538
 539                         } });
 540
 541         } catch (e) {
 542                 exception_error("createFilter", e);
 543         }
 544 }
 545
 546 function isValidURL(s) {
 547         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
 548 }
 549
 550 function subscribeToFeed() {
 551
 552         try {
 553
 554         var form = document.forms['feed_add_form'];
 555         var feed_url = form.feed_url.value;
 556
 557         if (feed_url == "") {
 558                 alert(__("Can't subscribe: no feed URL given."));
 559                 return false;
 560         }
 561
 562         notify_progress(__("Subscribing to feed..."), true);
 563
 564         var query = Form.serialize("feed_add_form");
 565
 566         console.log("subscribe q: " + query);
 567
 568         Form.disable("feed_add_form");
 569
 570         new Ajax.Request("backend.php", {
 571                 parameters: query,
 572                 onComplete: function(transport) {
 573                         //dlg_frefresh_callback(transport);
 574
 575                         try {
 576
 577                                 if (!transport.responseXML) {
 578                                         console.log(transport.responseText);
 579                                         alert(__("Server error while trying to subscribe to specified feed."));
 580                                         return;
 581                                 }
 582
 583                                 var result = transport.responseXML.getElementsByTagName('result')[0];
 584                                 var rc = parseInt(result.getAttribute('code'));
 585
 586                                 Form.enable("feed_add_form");
 587
 588                                 notify('');
 589
 590                                 switch (rc) {
 591                                 case 1:
 592                                         closeInfoBox();
 593                                         notify_info(__("Subscribed to %s").replace("%s", feed_url));
 594
 595                                         if (inPreferences()) {
 596                                                 updateFeedList();
 597                                         } else {
 598                                                 setTimeout('updateFeedList(false, false)', 50);
 599                                         }
 600                                         break;
 601                                 case 2:
 602                                         alert(__("Specified URL seems to be invalid."));
 603                                         break;
 604                                 case 3:
 605                                         alert(__("Specified URL doesn't seem to contain any feeds."));
 606                                         break;
 607                                 case 4:
 608                                         new Ajax.Request("backend.php", {
 609                                                 parameters: 'op=rpc&subop=extractfeedurls&url=' + encodeURIComponent(feed_url),
 610                                                 onComplete: function(transport) {
 611                                                         var result = transport.responseXML.getElementsByTagName('urls')[0];
 612                                                         var feeds = JSON.parse(result.firstChild.nodeValue);
 613                                                         var select = document.getElementById("faad_feeds_container_select");
 614
 615                                                         while (select.hasChildNodes()) {
 616                                                                 select.removeChild(elem.firstChild);
 617                                                         }
 618                                                         var count = 0;
 619                                                         for (var feedUrl in feeds) {
 620                                                                 select.insert(new Option(feeds[feedUrl], feedUrl, false));
 621                                                                 count++;
 622                                                         }
 623                                                         if (count > 5) count = 5;
 624                                                         select.size = count;
 625
 626                                                         Effect.Appear('fadd_feeds_container', {duration : 0.5});
 627                                                 }
 628                                         });
 629                                         break;
 630                                 case 5:
 631                                         alert(__("Couldn't download the specified URL."));
 632                                         break;
 633                                 case 0:
 634                                         alert(__("You are already subscribed to this feed."));
 635                                         break;
 636                                 }
 637
 638                         } catch (e) {
 639                                 exception_error("subscribeToFeed", e);
 640                         }
 641
 642                 } });
 643
 644         } catch (e) {
 645                 exception_error("subscribeToFeed", e);
 646         }
 647
 648         return false;
 649 }
 650
 651 function filterCR(e, f)
 652 {
 653      var key;
 654
 655      if(window.event)
 656           key = window.event.keyCode;     //IE
 657      else
 658           key = e.which;     //firefox
 659
 660         if (key == 13) {
 661                 if (typeof f != 'undefined') {
 662                         f();
 663                         return false;
 664                 } else {
 665                         return false;
 666                 }
 667         } else {
 668                 return true;
 669         }
 670 }
 671
 672 function getInitParam(key) {
 673         return init_params[key];
 674 }
 675
 676 function setInitParam(key, value) {
 677         init_params[key] = value;
 678 }
 679
 680 function fatalError(code, msg, ext_info) {
 681         try {
 682
 683                 if (!ext_info) ext_info = "N/A";
 684
 685                 if (code == 6) {
 686                         window.location.href = "tt-rss.php";
 687                 } else if (code == 5) {
 688                         window.location.href = "db-updater.php";
 689                 } else {
 690
 691                         if (msg == "") msg = "Unknown error";
 692
 693                         var ebc = $("xebContent");
 694
 695                         if (ebc) {
 696
 697                                 Element.show("dialog_overlay");
 698                                 Element.show("errorBoxShadow");
 699                                 Element.hide("xebBtn");
 700
 701                                 if (ext_info) {
 702                                         if (ext_info.responseText) {
 703                                                 ext_info = ext_info.responseText;
 704                                         }
 705                                 }
 706
 707                                 ebc.innerHTML =
 708                                         "<div><b>Error message:</b></div>" +
 709                                         "<pre>" + msg + "</pre>" +
 710                                         "<div><b>Additional information:</b></div>" +
 711                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
 712                         }
 713                 }
 714
 715         } catch (e) {
 716                 exception_error("fatalError", e);
 717         }
 718 }
 719
 720 function filterDlgCheckType(sender) {
 721
 722         try {
 723
 724                 var ftype = sender[sender.selectedIndex].value;
 725
 726                 var form = document.forms["filter_add_form"];
 727
 728                 if (!form) {
 729                         form = document.forms["filter_edit_form"];
 730                 }
 731
 732                 if (!form) {
 733                         console.log("filterDlgCheckType: can't find form!");
 734                         return;
 735                 }
 736
 737                 // if selected filter type is 5 (Date) enable the modifier dropbox
 738                 if (ftype == 5) {
 739                         Element.show("filter_dlg_date_mod_box");
 740                         Element.show("filter_dlg_date_chk_box");
 741                 } else {
 742                         Element.hide("filter_dlg_date_mod_box");
 743                         Element.hide("filter_dlg_date_chk_box");
 744
 745                 }
 746
 747         } catch (e) {
 748                 exception_error("filterDlgCheckType", e);
 749         }
 750
 751 }
 752
 753 function filterDlgCheckAction(sender) {
 754
 755         try {
 756
 757                 var action = sender[sender.selectedIndex].value;
 758
 759                 var form = document.forms["filter_add_form"];
 760
 761                 if (!form) {
 762                         form = document.forms["filter_edit_form"];
 763                 }
 764
 765                 if (!form) {
 766                         console.log("filterDlgCheckAction: can't find form!");
 767                         return;
 768                 }
 769
 770                 var action_param = $("filter_dlg_param_box");
 771
 772                 if (!action_param) {
 773                         console.log("filterDlgCheckAction: can't find action param box!");
 774                         return;
 775                 }
 776
 777                 // if selected action supports parameters, enable params field
 778                 if (action == 4 || action == 6 || action == 7) {
 779                         Element.show(action_param);
 780                         if (action != 7) {
 781                                 Element.show(form.action_param);
 782                                 Element.hide(form.action_param_label);
 783                         } else {
 784                                 Element.show(form.action_param_label);
 785                                 Element.hide(form.action_param);
 786                         }
 787                 } else {
 788                         Element.hide(action_param);
 789                 }
 790
 791         } catch (e) {
 792                 exception_error("filterDlgCheckAction", e);
 793         }
 794
 795 }
 796
 797 function filterDlgCheckDate() {
 798         try {
 799                 var form = document.forms["filter_add_form"];
 800
 801                 if (!form) {
 802                         form = document.forms["filter_edit_form"];
 803                 }
 804
 805                 if (!form) {
 806                         console.log("filterDlgCheckAction: can't find form!");
 807                         return;
 808                 }
 809
 810                 var reg_exp = form.reg_exp.value;
 811
 812                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
 813
 814                 new Ajax.Request("backend.php", {
 815                         parameters: query,
 816                         onComplete: function(transport) {
 817
 818                                 var form = document.forms["filter_add_form"];
 819
 820                                 if (!form) {
 821                                         form = document.forms["filter_edit_form"];
 822                                 }
 823
 824                                 if (transport.responseXML) {
 825                                         var result = transport.responseXML.getElementsByTagName("result")[0];
 826
 827                                         if (result && result.firstChild) {
 828                                                 if (result.firstChild.nodeValue == "1") {
 829
 830                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
 831
 832                                                         return;
 833                                                 }
 834                                         }
 835                                 }
 836
 837                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
 838
 839                         } });
 840
 841
 842         } catch (e) {
 843                 exception_error("filterDlgCheckDate", e);
 844         }
 845 }
 846
 847 function explainError(code) {
 848         return displayDlg("explainError", code);
 849 }
 850
 851 function displayHelpInfobox(topic_id) {
 852
 853         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
 854
 855         var w = window.open(url, "ttrss_help",
 856                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
 857
 858 }
 859
 860 function loading_set_progress(p) {
 861         try {
 862                 if (p < last_progress_point || !Element.visible("overlay")) return;
 863
 864                 console.log("loading_set_progress : " + p + " (" + last_progress_point + ")");
 865
 866                 var o = $("l_progress_i");
 867
 868 //              o.style.width = (p * 2) + "px";
 869
 870                 new Effect.Scale(o, p, {
 871                         scaleY : false,
 872                         scaleFrom : last_progress_point,
 873                         scaleMode: { originalWidth : 200 },
 874                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
 875
 876                 last_progress_point = p;
 877
 878         } catch (e) {
 879                 exception_error("loading_set_progress", e);
 880         }
 881 }
 882
 883 function remove_splash() {
 884         if (Element.visible("overlay")) {
 885                 console.log("about to remove splash, OMG!");
 886                 Element.hide("overlay");
 887                 console.log("removed splash!");
 888         }
 889 }
 890
 891 function getSelectedFeedsFromBrowser() {
 892
 893         var list = $$("#browseFeedList li[id*=FBROW]");
 894
 895         var selected = new Array();
 896
 897         list.each(function(child) {
 898                 var id = child.id.replace("FBROW-", "");
 899                 var cb = $("FBCHK-" + id);
 900
 901                 if (cb.checked) {
 902                         selected.push(id);
 903                 }
 904         });
 905
 906         return selected;
 907 }
 908
 909 function updateFeedBrowser() {
 910         try {
 911
 912                 var query = Form.serialize("feed_browser");
 913
 914                 Element.show('feed_browser_spinner');
 915
 916                 new Ajax.Request("backend.php", {
 917                         parameters: query,
 918                         onComplete: function(transport) {
 919                                 notify('');
 920
 921                                 Element.hide('feed_browser_spinner');
 922
 923                                 var c = $("browseFeedList");
 924                                 var r = transport.responseXML.getElementsByTagName("content")[0];
 925                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
 926                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
 927
 928                                 if (c && r) {
 929                                         c.innerHTML = r.firstChild.nodeValue;
 930                                 }
 931
 932                                 if (parseInt(mode.getAttribute("value")) == 2) {
 933                                         Element.show('feed_archive_remove');
 934                                 } else {
 935                                         Element.hide('feed_archive_remove');
 936                                 }
 937
 938                         } });
 939
 940         } catch (e) {
 941                 exception_error("updateFeedBrowser", e);
 942         }
 943
 944 }
 945
 946 function transport_error_check(transport) {
 947         try {
 948                 if (transport.responseXML) {
 949                         var error = transport.responseXML.getElementsByTagName("error")[0];
 950
 951                         if (error) {
 952                                 var code = error.getAttribute("error-code");
 953                                 var msg = error.getAttribute("error-msg");
 954                                 if (code != 0) {
 955                                         fatalError(code, msg);
 956                                         return false;
 957                                 }
 958                         }
 959                 }
 960         } catch (e) {
 961                 exception_error("check_for_error_xml", e);
 962         }
 963         return true;
 964 }
 965
 966 function strip_tags(s) {
 967         return s.replace(/<\/?[^>]+(>|$)/g, "");
 968 }
 969
 970 function truncate_string(s, length) {
 971         if (!length) length = 30;
 972         var tmp = s.substring(0, length);
 973         if (s.length > length) tmp += "&hellip;";
 974         return tmp;
 975 }
 976
 977 function hotkey_prefix_timeout() {
 978         try {
 979
 980                 var date = new Date();
 981                 var ts = Math.round(date.getTime() / 1000);
 982
 983                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
 984                         console.log("hotkey_prefix seems to be stuck, aborting");
 985                         hotkey_prefix_pressed = false;
 986                         hotkey_prefix = false;
 987                         Element.hide('cmdline');
 988                 }
 989
 990                 setTimeout("hotkey_prefix_timeout()", 1000);
 991
 992         } catch  (e) {
 993                 exception_error("hotkey_prefix_timeout", e);
 994         }
 995 }
 996
 997 function hideAuxDlg() {
 998         try {
 999                 Element.hide('auxDlg');
1000         } catch (e) {
1001                 exception_error("hideAuxDlg", e);
1002         }
1003 }
1004
1005 function feedBrowserSubscribe() {
1006         try {
1007
1008                 var selected = getSelectedFeedsFromBrowser();
1009
1010                 var mode = document.forms['feed_browser'].mode;
1011
1012                 mode = mode[mode.selectedIndex].value;
1013
1014                 if (selected.length > 0) {
1015                         closeInfoBox();
1016
1017                         notify_progress("Loading, please wait...", true);
1018
1019                         var query = "?op=rpc&subop=massSubscribe&ids="+
1020                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1021
1022                         new Ajax.Request("backend.php", {
1023                                 parameters: query,
1024                                 onComplete: function(transport) {
1025
1026                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1027                                         var nf_value = nf.getAttribute("value");
1028
1029                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1030
1031                                         if (inPreferences()) {
1032                                                 updateFeedList();
1033                                         } else {
1034                                                 setTimeout('updateFeedList(false, false)', 50);
1035                                         }
1036                                 } });
1037
1038                 } else {
1039                         alert(__("No feeds are selected."));
1040                 }
1041
1042         } catch (e) {
1043                 exception_error("feedBrowserSubscribe", e);
1044         }
1045 }
1046
1047 function feedArchiveRemove() {
1048         try {
1049
1050                 var selected = getSelectedFeedsFromBrowser();
1051
1052                 if (selected.length > 0) {
1053
1054                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1055
1056                         if (confirm(pr)) {
1057                                 Element.show('feed_browser_spinner');
1058
1059                                 var query = "?op=rpc&subop=remarchived&ids=" +
1060                                         param_escape(selected.toString());;
1061
1062                                 new Ajax.Request("backend.php", {
1063                                         parameters: query,
1064                                         onComplete: function(transport) {
1065                                                 updateFeedBrowser();
1066                                         } });
1067                         }
1068
1069                 } else {
1070                         alert(__("No feeds are selected."));
1071                 }
1072
1073         } catch (e) {
1074                 exception_error("feedArchiveRemove", e);
1075         }
1076 }
1077
1078 function uploadIconHandler(rc) {
1079         try {
1080                 switch (rc) {
1081                         case 0:
1082                                 notify_info("Upload complete.");
1083                                 if (inPreferences()) {
1084                                         updateFeedList();
1085                                 } else {
1086                                         setTimeout('updateFeedList(false, false)', 50);
1087                                 }
1088                                 break;
1089                         case 1:
1090                                 notify_error("Upload failed: icon is too big.");
1091                                 break;
1092                         case 2:
1093                                 notify_error("Upload failed.");
1094                                 break;
1095                 }
1096
1097         } catch (e) {
1098                 exception_error("uploadIconHandler", e);
1099         }
1100 }
1101
1102 function removeFeedIcon(id) {
1103
1104         try {
1105
1106                 if (confirm(__("Remove stored feed icon?"))) {
1107                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
1108
1109                         console.log(query);
1110
1111                         notify_progress("Removing feed icon...", true);
1112
1113                         new Ajax.Request("backend.php", {
1114                                 parameters: query,
1115                                 onComplete: function(transport) {
1116                                         notify_info("Feed icon removed.");
1117                                         if (inPreferences()) {
1118                                                 updateFeedList();
1119                                         } else {
1120                                                 setTimeout('updateFeedList(false, false)', 50);
1121                                         }
1122                                 } });
1123                 }
1124
1125                 return false;
1126         } catch (e) {
1127                 exception_error("uploadFeedIcon", e);
1128         }
1129 }
1130
1131 function uploadFeedIcon() {
1132
1133         try {
1134
1135                 var file = $("icon_file");
1136
1137                 if (file.value.length == 0) {
1138                         alert(__("Please select an image file to upload."));
1139                 } else {
1140                         if (confirm(__("Upload new icon for this feed?"))) {
1141                                 notify_progress("Uploading, please wait...", true);
1142                                 return true;
1143                         }
1144                 }
1145
1146                 return false;
1147
1148         } catch (e) {
1149                 exception_error("uploadFeedIcon", e);
1150         }
1151 }
1152
1153 function addLabel(select, callback) {
1154
1155         try {
1156
1157                 var caption = prompt(__("Please enter label caption:"), "");
1158
1159                 if (caption != undefined) {
1160
1161                         if (caption == "") {
1162                                 alert(__("Can't create label: missing caption."));
1163                                 return false;
1164                         }
1165
1166                         var query = "?op=pref-labels&subop=add&caption=" +
1167                                 param_escape(caption);
1168
1169                         if (select)
1170                                 query += "&output=select";
1171
1172                         notify_progress("Loading, please wait...", true);
1173
1174                         if (inPreferences() && !select) active_tab = "labelConfig";
1175
1176                         new Ajax.Request("backend.php", {
1177                                 parameters: query,
1178                                 onComplete: function(transport) {
1179                                         if (callback) {
1180                                                 callback(transport);
1181                                         } else if (inPreferences()) {
1182                                                 infobox_submit_callback2(transport);
1183                                         } else {
1184                                                 updateFeedList();
1185                                         }
1186                         } });
1187
1188                 }
1189
1190         } catch (e) {
1191                 exception_error("addLabel", e);
1192         }
1193 }
1194
1195 function quickAddFeed() {
1196         displayDlg('quickAddFeed', '',
1197            function () {$('feed_url').focus();});
1198 }
1199
1200 function quickAddFilter() {
1201         displayDlg('quickAddFilter', '',
1202            function () {document.forms['filter_add_form'].reg_exp.focus();});
1203 }
1204
1205 function unsubscribeFeed(feed_id, title) {
1206
1207         var msg = __("Unsubscribe from %s?").replace("%s", title);
1208
1209         if (title == undefined || confirm(msg)) {
1210                 notify_progress("Removing feed...");
1211
1212                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
1213
1214                 new Ajax.Request("backend.php", {
1215                         parameters: query,
1216                         onComplete: function(transport) {
1217
1218                                         closeInfoBox();
1219
1220                                         if (inPreferences()) {
1221                                                 updateFeedList();
1222                                         } else {
1223                                                 dlg_frefresh_callback(transport, feed_id);
1224                                         }
1225
1226                                 } });
1227         }
1228
1229         return false;
1230 }
1231
1232
1233 function backend_sanity_check_callback(transport) {
1234
1235         try {
1236
1237                 if (sanity_check_done) {
1238                         fatalError(11, "Sanity check request received twice. This can indicate "+
1239                       "presence of Firebug or some other disrupting extension. "+
1240                                 "Please disable it and try again.");
1241                         return;
1242                 }
1243
1244                 if (!transport.responseXML) {
1245                         if (!store) {
1246                                 fatalError(3, "Sanity check: Received reply is not XML",
1247                                         transport.responseText);
1248                                 return;
1249                         }
1250                 }
1251
1252                 var reply = transport.responseXML.getElementsByTagName("error")[0];
1253
1254                 if (!reply) {
1255                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
1256                         return;
1257                 }
1258
1259                 var error_code = reply.getAttribute("error-code");
1260
1261                 if (error_code && error_code != 0) {
1262                         return fatalError(error_code, reply.getAttribute("error-msg"));
1263                 }
1264
1265                 console.log("sanity check ok");
1266
1267                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
1268
1269                 if (params) {
1270                         console.log('reading init-params...');
1271
1272                         params = JSON.parse(params.firstChild.nodeValue);
1273
1274                         if (params) {
1275                                 for (k in params) {
1276                                         var v = params[k];
1277                                         console.log("IP: " + k + " => " + v);
1278                                 }
1279                         }
1280
1281                         init_params = params;
1282                 }
1283
1284                 sanity_check_done = true;
1285
1286                 init_second_stage();
1287
1288         } catch (e) {
1289                 exception_error("backend_sanity_check_callback", e, transport);
1290         }
1291 }
1292
1293 function has_local_storage() {
1294         return false;
1295 /*      try {
1296                 return 'localStorage' in window && window['localStorage'] != null;
1297         } catch (e) {
1298                 return false;
1299         } */
1300 }
1301
1302 function catSelectOnChange(elem) {
1303         try {
1304                 var value = elem[elem.selectedIndex].value;
1305                 var def = elem.getAttribute('default');
1306
1307                 if (value == "ADD_CAT") {
1308
1309                         if (def)
1310                                 dropboxSelect(elem, def);
1311                         else
1312                                 elem.selectedIndex = 0;
1313
1314                         quickAddCat(elem);
1315                 }
1316
1317         } catch (e) {
1318                 exception_error("catSelectOnChange", e);
1319         }
1320 }
1321
1322 function quickAddCat(elem) {
1323         try {
1324                 var cat = prompt(__("Please enter category title:"));
1325
1326                 if (cat) {
1327
1328                         var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
1329
1330                         notify_progress("Loading, please wait...", true);
1331
1332                         new Ajax.Request("backend.php", {
1333                                 parameters: query,
1334                                 onComplete: function (transport) {
1335                                         var response = transport.responseXML;
1336                                         var select = response.getElementsByTagName("select")[0];
1337                                         var options = select.getElementsByTagName("option");
1338
1339                                         dropbox_replace_options(elem, options);
1340
1341                                         notify('');
1342
1343                         } });
1344
1345                 }
1346
1347         } catch (e) {
1348                 exception_error("quickAddCat", e);
1349         }
1350 }
1351
1352 function genUrlChangeKey(feed, is_cat) {
1353
1354         try {
1355                 var ok = confirm(__("Generate new syndication address for this feed?"));
1356
1357                 if (ok) {
1358
1359                         notify_progress("Trying to change address...", true);
1360
1361                         var query = "?op=rpc&subop=regenFeedKey&id=" + param_escape(feed) +
1362                                 "&is_cat=" + param_escape(is_cat);
1363
1364                         new Ajax.Request("backend.php", {
1365                                 parameters: query,
1366                                 onComplete: function(transport) {
1367                                                 var new_link = transport.responseXML.getElementsByTagName("link")[0];
1368
1369                                                 var e = $('gen_feed_url');
1370
1371                                                 if (new_link) {
1372
1373                                                         new_link = new_link.firstChild.nodeValue;
1374
1375                                                         e.innerHTML = e.innerHTML.replace(/\&amp;key=.*$/,
1376                                                                 "&amp;key=" + new_link);
1377
1378                                                         e.href = e.href.replace(/\&amp;key=.*$/,
1379                                                                 "&amp;key=" + new_link);
1380
1381                                                         new Effect.Highlight(e);
1382
1383                                                         notify('');
1384
1385                                                 } else {
1386                                                         notify_error("Could not change feed URL.");
1387                                                 }
1388                                 } });
1389                 }
1390         } catch (e) {
1391                 exception_error("genUrlChangeKey", e);
1392         }
1393         return false;
1394 }
1395
1396 function labelSelectOnChange(elem) {
1397         try {
1398                 var value = elem[elem.selectedIndex].value;
1399                 var def = elem.getAttribute('default');
1400
1401                 if (value == "ADD_LABEL") {
1402
1403                         if (def)
1404                                 dropboxSelect(elem, def);
1405                         else
1406                                 elem.selectedIndex = 0;
1407
1408                         addLabel(elem, function(transport) {
1409
1410                                         try {
1411
1412                                                 var response = transport.responseXML;
1413                                                 var select = response.getElementsByTagName("select")[0];
1414                                                 var options = select.getElementsByTagName("option");
1415
1416                                                 dropbox_replace_options(elem, options);
1417
1418                                                 notify('');
1419                                         } catch (e) {
1420                                                 exception_error("addLabel", e);
1421                                         }
1422                         });
1423                 }
1424
1425         } catch (e) {
1426                 exception_error("labelSelectOnChange", e);
1427         }
1428 }
1429
1430 function dropbox_replace_options(elem, options) {
1431
1432         try {
1433                 while (elem.hasChildNodes())
1434                         elem.removeChild(elem.firstChild);
1435
1436                 var sel_idx = -1;
1437
1438                 for (var i = 0; i < options.length; i++) {
1439                         var text = options[i].firstChild.nodeValue;
1440                         var value = options[i].getAttribute("value");
1441
1442                         if (value == undefined) value = text;
1443
1444                         var issel = options[i].getAttribute("selected") == "1";
1445
1446                         var option = new Option(text, value, issel);
1447
1448                         if (options[i].getAttribute("disabled"))
1449                                 option.setAttribute("disabled", true);
1450
1451                         elem.insert(option);
1452
1453                         if (issel) sel_idx = i;
1454                 }
1455
1456                 // Chrome doesn't seem to just select stuff when you pass new Option(x, y, true)
1457                 if (sel_idx >= 0) elem.selectedIndex = sel_idx;
1458
1459         } catch (e) {
1460                 exception_error("dropbox_replace_options", e);
1461         }
1462 }
1463
1464 // mode = all, none, invert
1465 function selectTableRows(id, mode) {
1466         try {
1467                 var rows = $(id).rows;
1468
1469                 for (var i = 0; i < rows.length; i++) {
1470                         var row = rows[i];
1471                         var cb = false;
1472
1473                         if (row.id && row.className) {
1474                                 var bare_id = row.id.replace(/^[A-Z]*?-/, "");
1475                                 var inputs = rows[i].getElementsByTagName("input");
1476
1477                                 for (var j = 0; j < inputs.length; j++) {
1478                                         var input = inputs[j];
1479
1480                                         if (input.getAttribute("type") == "checkbox" &&
1481                                                         input.id.match(bare_id)) {
1482
1483                                                 cb = input;
1484                                                 break;
1485                                         }
1486                                 }
1487
1488                                 if (cb) {
1489                                         var issel = row.hasClassName("Selected");
1490
1491                                         if (mode == "all" && !issel) {
1492                                                 row.addClassName("Selected");
1493                                                 cb.checked = true;
1494                                         } else if (mode == "none" && issel) {
1495                                                 row.removeClassName("Selected");
1496                                                 cb.checked = false;
1497                                         } else if (mode == "invert") {
1498
1499                                                 if (issel) {
1500                                                         row.removeClassName("Selected");
1501                                                         cb.checked = false;
1502                                                 } else {
1503                                                         row.addClassName("Selected");
1504                                                         cb.checked = true;
1505                                                 }
1506                                         }
1507                                 }
1508                         }
1509                 }
1510
1511         } catch (e) {
1512                 exception_error("selectTableRows", e);
1513
1514         }
1515 }
1516
1517 function getSelectedTableRowIds(id) {
1518         var rows = [];
1519
1520         try {
1521                 var elem_rows = $(id).rows;
1522
1523                 for (i = 0; i < elem_rows.length; i++) {
1524                         if (elem_rows[i].hasClassName("Selected")) {
1525                                 var bare_id = elem_rows[i].id.replace(/^[A-Z]*?-/, "");
1526                                 rows.push(bare_id);
1527                         }
1528                 }
1529
1530         } catch (e) {
1531                 exception_error("getSelectedTableRowIds", e);
1532         }
1533
1534         return rows;
1535 }
1536