offline.js

   1 var SCHEMA_VERSION = 10;
   2
   3 var offline_mode = false;
   4 var store = false;
   5 var localServer = false;
   6 var db = false;
   7 var articles_synced = 0;
   8 var sync_in_progress = false;
   9 var sync_timer = false;
  10
  11 function view_offline(id, feed_id) {
  12         try {
  13
  14                 enableHotkeys();
  15                 showArticleInHeadlines(id);
  16
  17                 db.execute("UPDATE articles SET unread = 0 WHERE id = ?", [id]);
  18
  19                 var rs = db.execute("SELECT * FROM articles WHERE id = ?", [id]);
  20
  21                 if (rs.isValidRow()) {
  22
  23                         var tmp = "<div class=\"postReply\">";
  24
  25                         tmp += "<div class=\"postHeader\" onmouseover=\"enable_resize(true)\" "+
  26                                 "onmouseout=\"enable_resize(false)\">";
  27
  28                         tmp += "<div class=\"postDate\">"+rs.fieldByName("updated")+"</div>";
  29
  30                         if (rs.fieldByName("link") != "") {
  31                                 tmp += "<div clear='both'><a target=\"_blank\" "+
  32                                         "href=\"" + rs.fieldByName("link") + "\">" +
  33                                         rs.fieldByName("title") + "</a></div>";
  34                         } else {
  35                                 tmp += "<div clear='both'>" + rs.fieldByName("title") + "</div>";
  36                         }
  37
  38 /*                      tmp += "<div style='float : right'> "+
  39                                 "<img src='images/tag.png' class='tagsPic' alt='Tags' title='Tags'>";
  40                         tmp += rs.fieldByName("tags");
  41                         tmp += "</div>"; */
  42
  43 /*                      tmp += "<div clear='both'>"+
  44                                 "<a target=\"_blank\" "+
  45                                         "href=\"" + rs.fieldByName("comments") + "\">" +
  46                                         __("comments") + "</a></div>"; */
  47
  48                         tmp += "</div>";
  49
  50                         tmp += "<div class=\"postContent\">"
  51                         tmp += rs.fieldByName("content");
  52                         tmp += "</div>";
  53
  54                         tmp += "</div>";
  55
  56                         render_article(tmp);
  57                         update_local_feedlist_counters();
  58                 }
  59
  60                 rs.close();
  61
  62                 return false;
  63
  64         } catch (e) {
  65                 exception_error("view_offline", e);
  66         }
  67 }
  68
  69 function viewfeed_offline(feed_id, subop, is_cat, subop_param, skip_history, offset) {
  70         try {
  71                 notify('');
  72
  73                 if (!offset) offset = 0;
  74
  75                 if (offset > 0) {
  76                         _feed_cur_page = parseInt(offset);
  77                         if (_infscroll_request_sent) {
  78                                 return;
  79                         }
  80                 } else {
  81                         _feed_cur_page = 0;
  82                         _infscroll_disable = 0;
  83                 }
  84
  85                 if (getActiveFeedId() != feed_id) {
  86                         _feed_cur_page = 0;
  87                         active_post_id = 0;
  88                         _infscroll_disable = 0;
  89                 }
  90
  91                 loading_set_progress(100);
  92
  93                 clean_feed_selections();
  94
  95                 setActiveFeedId(feed_id, is_cat);
  96
  97                 if (!is_cat) {
  98                         var feedr = $("FEEDR-" + feed_id);
  99                         if (feedr && !feedr.className.match("Selected")) {
 100                                 feedr.className = feedr.className + "Selected";
 101                         }
 102                 } else {
 103                         var feedr = $("FCAT-" + feed_id);
 104                         if (feedr && !feedr.className.match("Selected")) {
 105                                 feedr.className = feedr.className + "Selected";
 106                         }
 107                 }
 108
 109                 if (subop == "MarkAllRead") {
 110                         catchup_local_feed(feed_id, is_cat);
 111                 }
 112
 113                 disableContainerChildren("headlinesToolbar", false);
 114                 Form.enable("main_toolbar_form");
 115
 116                 var f = $("headlines-frame");
 117                 try {
 118                         if (reply.offset == 0) {
 119                                 debug("resetting headlines scrollTop");
 120                                 f.scrollTop = 0;
 121                         }
 122                 } catch (e) { };
 123
 124
 125                 var tmp = "";
 126                 var feed_title = "";
 127
 128                 if (is_cat) {
 129                         feed_title = get_local_category_title(feed_id);
 130                 } else {
 131                         feed_title = get_local_feed_title(feed_id);
 132                 }
 133
 134                 if (feed_title) {
 135
 136                         if (offset == 0) {
 137                                 tmp += "<div id=\"headlinesContainer\">";
 138
 139                                 tmp += "<div class=\"headlinesSubToolbar\">";
 140                                 tmp += "<div id=\"subtoolbar_ftitle\">";
 141                                 tmp += feed_title;
 142                                 tmp += "</div>";
 143
 144                                 var sel_all_link;
 145                                 var sel_unread_link;
 146                                 var sel_none_link;
 147                                 var sel_inv_link;
 148
 149                                 if ($("content-frame")) {
 150                                         sel_all_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, '', true)";
 151                                         sel_unread_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true)";
 152                                         sel_none_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false)";
 153                                         sel_inv_link = "javascript:invertHeadlineSelection()";
 154                                 } else {
 155                                         sel_all_link = "javascript:cdmSelectArticles('all')";
 156                                         sel_unread_link = "javascript:cdmSelectArticles('unread')";
 157                                         sel_none_link = "javascript:cdmSelectArticles('none')";
 158                                         sel_inv_link = "javascript:invertHeadlineSelection()";
 159                                 }
 160
 161                                 tmp += __('Select:')+
 162                                         " <a href=\""+sel_all_link+"\">"+__('All')+"</a>, "+
 163                                         "<a href=\""+sel_unread_link+"\">"+__('Unread')+"</a>, "+
 164                                         "<a href=\""+sel_inv_link+"\">"+__('Invert')+"</a>, "+
 165                                         "<a href=\""+sel_none_link+"\">"+__('None')+"</a>";
 166
 167                                 tmp += "&nbsp;&nbsp;";
 168
 169                                 tmp += "</div>";
 170
 171                                 tmp += "<div id=\"headlinesInnerContainer\" onscroll=\"headlines_scroll_handler()\">";
 172                                 if ($("content-frame")) {
 173                                         tmp += "<table class=\"headlinesList\" id=\"headlinesList\" cellspacing=\"0\">";
 174                                 }
 175
 176                         }
 177
 178                         var limit = 30;
 179
 180                         var toolbar_form = document.forms["main_toolbar_form"];
 181
 182                         var limit = toolbar_form.limit[toolbar_form.limit.selectedIndex].value;
 183                         var view_mode = toolbar_form.view_mode[toolbar_form.view_mode.selectedIndex].value;
 184
 185                         var limit_qpart = "";
 186                         var strategy_qpart = "";
 187                         var mode_qpart = "";
 188                         var offset_qpart = "";
 189
 190                         if (limit != 0) {
 191                                 limit_qpart = "LIMIT " + limit;
 192                         }
 193
 194                         if (view_mode == "all_articles") {
 195                                 mode_qpart = "1";
 196                         } else if (view_mode == "adaptive") {
 197                                 if (is_cat && get_local_category_unread(feed_id) ||
 198                                         get_local_feed_unread(feed_id) > 0) {
 199                                                 mode_qpart = "unread = 1";
 200                                 } else {
 201                                         mode_qpart = "1";
 202                                 }
 203
 204                         } else if (view_mode == "marked") {
 205                                 mode_qpart = "marked = 1";
 206                         } else if (view_mode == "unread") {
 207                                 mode_qpart = "unread = 1";
 208                         } else {
 209                                 mode_qpart = "1";
 210                         }
 211
 212                         var ext_tables_qpart = "";
 213
 214                         if (is_cat) {
 215                                 if (feed_id >= 0) {
 216                                         strategy_qpart = "cat_id = " + feed_id;
 217                                 } else if (feed_id == -2) {
 218                                         strategy_qpart = "article_labels.id = articles.id";
 219                                         ext_tables_qpart = ",article_labels";
 220                                 }
 221                         } else if (feed_id > 0) {
 222                                 strategy_qpart = "feed_id = " + feed_id;
 223                         } else if (feed_id == -1) {
 224                                 strategy_qpart = "marked = 1";
 225                         } else if (feed_id == -4) {
 226                                 strategy_qpart = "1";
 227                         } else if (feed_id < -10) {
 228                                 var label_id = -11 - feed_id;
 229                                 strategy_qpart = "article_labels.id = articles.id AND label_id = " + label_id;
 230                                 ext_tables_qpart = ",article_labels";
 231                         }
 232
 233                         if (offset > 0) {
 234                                 offset_qpart = "OFFSET " + (offset*30);
 235                         } else {
 236                                 offset_qpart = "";
 237                         }
 238
 239                         var query = "SELECT *,feeds.title AS feed_title "+
 240                                 "FROM articles,feeds,categories"+ext_tables_qpart+" "+
 241                                 "WHERE " +
 242                                 "cat_id = categories.id AND " +
 243                                 "feed_id = feeds.id AND " +
 244                                 strategy_qpart +
 245                                 " AND " + mode_qpart +
 246                                 " ORDER BY updated DESC "+
 247                                 limit_qpart + " " +
 248                                 offset_qpart;
 249
 250                         var rs = db.execute(query);
 251
 252                         var line_num = offset*30;
 253
 254                         var real_feed_id = feed_id;
 255
 256                         while (rs.isValidRow()) {
 257
 258                                 var id = rs.fieldByName("id");
 259                                 var feed_id = rs.fieldByName("feed_id");
 260
 261                                 var entry_feed_title = false;
 262
 263                                 if (real_feed_id < 0 || is_cat) {
 264                                         entry_feed_title = rs.fieldByName("feed_title");
 265                                 }
 266
 267                                 var marked_pic;
 268
 269                                 var row_class = (line_num % 2) ? "even" : "odd";
 270
 271                                 if (rs.fieldByName("unread") == "1") {
 272                                         row_class += "Unread";
 273                                 }
 274
 275                                 var labels = get_local_article_labels(id);
 276
 277                                 var labels_str = "<span id=\"HLLCTR-"+id+"\">";
 278                                 labels_str += format_article_labels(labels, id);
 279                                 labels_str += "</span>";
 280
 281                                 if (rs.fieldByName("marked") == "1") {
 282                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 283                                                 "src=\"images/mark_set.png\" class=\"markedPic\""+
 284                                                 "alt=\"Unstar article\" onclick='javascript:tMark("+id+")'>";
 285                                 } else {
 286                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 287                                                 "src=\"images/mark_unset.png\" class=\"markedPic\""+
 288                                                 "alt=\"Star article\" onclick='javascript:tMark("+id+")'>";
 289                                 }
 290
 291                                 var mouseover_attrs = "onmouseover='postMouseIn($id)' "+
 292                                         "onmouseout='postMouseOut($id)'";
 293
 294                                 var content_preview = truncate_string(strip_tags(rs.fieldByName("content")),
 295                                                 100);
 296
 297                                 if ($("content-frame")) {
 298
 299                                         tmp += "<tr class='"+row_class+"' id='RROW-"+id+"' "+mouseover_attrs+">";
 300
 301                                         tmp += "<td class='hlUpdPic'> </td>";
 302
 303                                         tmp += "<td class='hlSelectRow'>"+
 304                                                 "<input type=\"checkbox\" onclick=\"tSR(this)\" id=\"RCHK-"+id+"\"></td>";
 305
 306                                         tmp += "<td class='hlMarkedPic'>"+marked_pic+"</td>";
 307
 308                                         tmp += "<td onclick='view("+id+","+feed_id+")' "+
 309                                                 "class='hlContent' valign='middle'>";
 310
 311                                         tmp += "<a target=\"_blank\" id=\"RTITLE-"+id+"\" href=\"" +
 312                                                 rs.fieldByName("link") + "\"" +
 313                                                 "onclick=\"return view("+id+","+feed_id+");\">"+
 314                                                 rs.fieldByName("title");
 315
 316                                         tmp += "<span class=\"contentPreview\"> - "+content_preview+"</span>";
 317
 318                                         tmp += "</a>";
 319
 320                                         tmp += labels_str;
 321
 322                                         if (entry_feed_title) {
 323                                                 tmp += " <span class=\"hlFeed\">"+
 324                                                         "(<a href='javascript:viewfeed("+feed_id+
 325                                                         ")'>"+entry_feed_title+"</a>)</span>";
 326                                         }
 327
 328                                         tmp += "</td>";
 329
 330                                         tmp += "<td class=\"hlUpdated\" onclick='view("+id+","+feed_id+")'>"+
 331                                                 "<nobr>"+rs.fieldByName("updated").substring(0,16)+
 332                                                 "</nobr></td>";
 333
 334                                         tmp += "</tr>";
 335                                 } else {
 336
 337                                         var add_class = "";
 338
 339                                         if (rs.fieldByName("unread") == "1") {
 340                                                 add_class = "Unread";
 341                                         }
 342
 343                                         tmp += "<div class=\"cdmArticle"+add_class+"\" id=\"RROW-"+id+"\" "+
 344                                                 mouseover_attrs+"'>";
 345
 346                                         feed_icon_img = "<img class=\"tinyFeedIcon\" src=\""+
 347                                                 getInitParam("icons_url")+"/"+feed_id+".ico\" alt=\"\">";
 348                                         cdm_feed_icon = "<span style=\"cursor : pointer\" "+
 349                                                 "onclick=\"viewfeed("+feed_id+")\">"+feed_icon_img+"</span>";
 350
 351                                         tmp += "<div class=\"cdmHeader\">";
 352                                         tmp += "<div class=\"articleUpdated\">"+
 353                                                 rs.fieldByName("updated").substring(0,16)+
 354                                                 " "+cdm_feed_icon+"</div>";
 355
 356                                         tmp += "<span id=\"RTITLE-"+id+"\" class=\"titleWrap\">"+
 357                                                 "<a class=\"title\" onclick=\"javascript:toggleUnread("+id+", 0)\""+
 358                                                 "target=\"_blank\" href=\""+rs.fieldByName("link")+
 359                                                 "\">"+rs.fieldByName("title")+"</a>";
 360
 361                                         tmp += labels_str;
 362
 363                                         if (entry_feed_title) {
 364                                                 tmp += "&nbsp;(<a href='javascript:viewfeed("+feed_id+
 365                                                         ")'>"+entry_feed_title+"</a>)";
 366                                         }
 367
 368                                         tmp += "</span></div>";
 369
 370                                         tmp += "<div class=\"cdmContent\" onclick=\"cdmClicked("+id+")\""+
 371                                                 "id=\"CICD-"+id+"\">";
 372                                         tmp += rs.fieldByName("content");
 373                                         tmp += "<br clear='both'>"
 374                                         tmp += "</div>";
 375
 376                                         tmp += "<div class=\"cdmFooter\"><span class='s0'>";
 377                                         tmp += __("Select:")+
 378                                                 " <input type=\"checkbox\" "+
 379                                                 "onclick=\"toggleSelectRowById(this, 'RROW-"+id+"')\" "+
 380                                                 "class=\"feedCheckBox\" id=\"RCHK-"+id+"\">";
 381
 382                                         tmp += "</span><span class='s1'>"+marked_pic+"</span> ";
 383
 384 /*                                      tmp += "<span class='s1'>"+
 385                                                 "<img class='tagsPic' src='images/tag.png' alt='Tags' title='Tags'>"+
 386                                                 "<span id=\"ATSTR-"+id+"\">"+rs.fieldByName("tags")+"</span>"+
 387                                                 "</span>"; */
 388
 389                                         tmp += "<span class='s2'>Toggle: <a class=\"cdmToggleLink\""+
 390                                                 "href=\"javascript:toggleUnread("+id+")\">"+
 391                                                 "Unread</a></span>";
 392                                         tmp += "</div>";
 393
 394                                         tmp += "</div>";
 395                                 }
 396
 397                                 rs.next();
 398                                 line_num++;
 399                         }
 400
 401                         if (line_num - offset*30 < 30) {
 402                                 _infscroll_disable = 1;
 403                         }
 404
 405                         rs.close();
 406
 407                         if (offset == 0) {
 408                                 tmp += "</table>";
 409
 410                                 if (line_num - offset*30 == 0) {
 411                                         tmp += "<div class='whiteBox'>" +
 412                                                 __("No articles found to display.") +
 413                                                 "</div>";
 414                                 }
 415                                 tmp += "</div></div>";
 416                         }
 417
 418                         if (offset == 0) {
 419                                 var container = $("headlines-frame");
 420                                 container.innerHTML = tmp;
 421                         } else {
 422                                 var ids = getSelectedArticleIds2();
 423
 424                                 var container = $("headlinesList");
 425                                 container.innerHTML = container.innerHTML + tmp;
 426
 427                                 for (var i = 0; i < ids.length; i++) {
 428                                         markHeadline(ids[i]);
 429                                 }
 430                         }
 431                 }
 432
 433                 remove_splash();
 434
 435                 _infscroll_request_sent = 0;
 436
 437         } catch (e) {
 438                 exception_error("viewfeed_offline", e);
 439         }
 440 }
 441
 442 function render_offline_feedlist() {
 443         try {
 444                 var cats_enabled = getInitParam("enable_feed_cats") == "1";
 445
 446                 var tmp = "<ul class=\"feedList\" id=\"feedList\">";
 447
 448                 var unread = get_local_feed_unread(-4);
 449
 450                 global_unread = unread;
 451                 updateTitle();
 452
 453                 if (cats_enabled) {
 454                         tmp += printCategoryHeader(-1, is_local_cat_collapsed(-1), false);
 455                 }
 456
 457                 tmp += printFeedEntry(-4, __("All articles"), "feed", unread,
 458                         "images/tag.png");
 459
 460                 var unread = get_local_feed_unread(-1);
 461
 462                 tmp += printFeedEntry(-1, __("Starred articles"), "feed", unread,
 463                         "images/mark_set.png");
 464
 465                 if (cats_enabled) {
 466                         tmp += "</ul></li>";
 467                 } else {
 468                         tmp += "<li><hr/></li>";
 469                 }
 470
 471                 if (cats_enabled) {
 472                         tmp += printCategoryHeader(-2, is_local_cat_collapsed(-2), false);
 473                 }
 474
 475                 var rs = db.execute("SELECT id,caption "+
 476                         "FROM labels "+
 477                         "ORDER BY caption");
 478
 479                 while (rs.isValidRow()) {
 480                         var id = -11 - parseInt(rs.field(0));
 481                         var caption = rs.field(1);
 482                         var unread = get_local_feed_unread(id);
 483
 484                         tmp += printFeedEntry(id, caption, "feed", unread,
 485                                 "images/label.png");
 486
 487                         rs.next();
 488                 }
 489
 490                 rs.close();
 491
 492                 if (cats_enabled) {
 493                         tmp += "</ul></li>";
 494                 } else {
 495                         tmp += "<li><hr/></li>";
 496                 }
 497
 498 /*              var rs = db.execute("SELECT feeds.id,feeds.title,has_icon,COUNT(articles.id) "+
 499                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 500                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 501                         "ORDER BY feeds.title"); */
 502
 503                 var order_by = "feeds.title";
 504
 505                 if (cats_enabled) order_by = "categories.title," + order_by;
 506
 507                 var rs = db.execute("SELECT "+
 508                         "feeds.id,feeds.title,has_icon,cat_id,collapsed "+
 509                         "FROM feeds,categories WHERE cat_id = categories.id "+
 510                         "ORDER BY "+order_by);
 511
 512                 var tmp_cat_id = -1;
 513
 514                 while (rs.isValidRow()) {
 515
 516                         var id = rs.field(0);
 517                         var title = rs.field(1);
 518                         var has_icon = rs.field(2);
 519                         var unread = get_local_feed_unread(id);
 520                         var cat_id = rs.field(3);
 521                         var cat_hidden = rs.field(4);
 522
 523                         if (cat_id != tmp_cat_id && cats_enabled) {
 524                                 if (tmp_cat_id != -1) {
 525                                         tmp += "</ul></li>";
 526                                 }
 527                                 tmp += printCategoryHeader(cat_id, cat_hidden, true);
 528                                 tmp_cat_id = cat_id;
 529                         }
 530
 531                         var icon = "";
 532
 533                         if (has_icon) {
 534                                 icon = getInitParam("icons_url") + "/" + id + ".ico";
 535                         }
 536
 537                         var feed_icon = "";
 538
 539                         var row_class = "feed";
 540
 541                         if (unread > 0) {
 542                                 row_class += "Unread";
 543                                 fctr_class = "feedCtrHasUnread";
 544                         } else {
 545                                 fctr_class = "feedCtrNoUnread";
 546                         }
 547
 548                         tmp += printFeedEntry(id, title, "feed", unread, icon);
 549
 550                         rs.next();
 551                 }
 552
 553                 rs.close();
 554
 555                 if (cats_enabled) {
 556                         tmp += "</ul>";
 557                 }
 558
 559                 tmp += "</ul>";
 560
 561                 render_feedlist(tmp);
 562         } catch (e) {
 563                 exception_error("render_offline_feedlist", e);
 564         }
 565 }
 566
 567 function init_offline() {
 568         try {
 569                 offline_mode = true;
 570
 571                 Element.hide("dispSwitchPrompt");
 572                 Element.hide("feedBrowserPrompt");
 573
 574                 Element.hide("topLinksOnline");
 575                 Element.show("topLinksOffline");
 576
 577                 var tb_form = $("main_toolbar_form");
 578                 Element.hide(tb_form.update);
 579
 580                 var chooser = $("quickMenuChooser");
 581                 chooser.disabled = true;
 582
 583                 var rs = db.execute("SELECT key, value FROM init_params");
 584
 585                 while (rs.isValidRow()) {
 586                         init_params[rs.field(0)] = rs.field(1);
 587                         rs.next();
 588                 }
 589
 590                 rs.close();
 591
 592                 var rs = db.execute("SELECT COUNT(*) FROM feeds");
 593
 594                 var num_feeds = 0;
 595
 596                 if (rs.isValidRow()) {
 597                         num_feeds = rs.field(0);
 598                 }
 599
 600                 rs.close();
 601
 602                 if (num_feeds == 0) {
 603                         remove_splash();
 604                         return fatalError(0,
 605                                 __("Data for offline browsing has not been downloaded yet."));
 606                 }
 607
 608                 render_offline_feedlist();
 609                 init_second_stage();
 610                 window.setTimeout("viewfeed(-4)", 50);
 611
 612         } catch (e) {
 613                 exception_error("init_offline", e);
 614         }
 615 }
 616
 617 function offline_download_parse(stage, transport) {
 618         try {
 619                 if (transport.responseXML) {
 620
 621                         if (!sync_in_progress) return;
 622
 623                         var sync_ok = transport.responseXML.getElementsByTagName("sync-ok");
 624
 625                         if (sync_ok.length > 0) {
 626                                 for (var i = 0; i < sync_ok.length; i++) {
 627                                         var id = sync_ok[i].getAttribute("id");
 628                                         if (id) {
 629                                                 debug("synced offline info for id " + id);
 630                                                 db.execute("UPDATE articles SET modified = '' WHERE id = ?", [id]);
 631                                         }
 632                                 }
 633                         }
 634
 635                         if (stage == 0) {
 636
 637                                 $("offlineModeSyncMsg").innerHTML = __("Synchronizing feeds...");
 638
 639                                 var feeds = transport.responseXML.getElementsByTagName("feed");
 640
 641                                 if (feeds.length > 0) {
 642                                         db.execute("DELETE FROM feeds");
 643                                 }
 644
 645                                 for (var i = 0; i < feeds.length; i++) {
 646                                         var id = feeds[i].getAttribute("id");
 647                                         var has_icon = feeds[i].getAttribute("has_icon");
 648                                         var title = feeds[i].firstChild.nodeValue;
 649                                         var cat_id = feeds[i].getAttribute("cat_id");
 650
 651                                         db.execute("INSERT INTO feeds (id,title,has_icon,cat_id)"+
 652                                                 "VALUES (?,?,?,?)",
 653                                                 [id, title, has_icon, cat_id]);
 654                                 }
 655
 656                                 $("offlineModeSyncMsg").innerHTML = __("Synchronizing categories...");
 657
 658                                 var cats = transport.responseXML.getElementsByTagName("category");
 659
 660                                 if (feeds.length > 0) {
 661                                         db.execute("DELETE FROM categories");
 662                                 }
 663
 664                                 for (var i = 0; i < cats.length; i++) {
 665                                         var id = cats[i].getAttribute("id");
 666                                         var collapsed = cats[i].getAttribute("collapsed");
 667                                         var title = cats[i].firstChild.nodeValue;
 668
 669                                         db.execute("INSERT INTO categories (id,title,collapsed)"+
 670                                                 "VALUES (?,?,?)",
 671                                                 [id, title, collapsed]);
 672                                 }
 673
 674                                 $("offlineModeSyncMsg").innerHTML = __("Synchronizing labels...");
 675
 676                                 var labels = transport.responseXML.getElementsByTagName("label");
 677
 678                                 if (labels.length > 0) {
 679                                         db.execute("DELETE FROM labels");
 680                                 }
 681
 682                                 for (var i = 0; i < labels.length; i++) {
 683                                         var id = labels[i].getAttribute("id");
 684                                         var fg_color = labels[i].getAttribute("fg_color");
 685                                         var bg_color = labels[i].getAttribute("bg_color");
 686                                         var caption = labels[i].firstChild.nodeValue;
 687
 688                                         db.execute("INSERT INTO labels (id,caption,fg_color,bg_color)"+
 689                                                 "VALUES (?,?,?,?)",
 690                                                 [id, caption, fg_color, bg_color]);
 691                                 }
 692
 693                                 $("offlineModeSyncMsg").innerHTML = __("Synchronizing articles...");
 694
 695                                 sync_timer = window.setTimeout("update_offline_data("+(stage+1)+")", 2*1000);
 696                         } else {
 697
 698                                 var articles = transport.responseXML.getElementsByTagName("article");
 699
 700                                 var limit = transport.responseXML.getElementsByTagName("limit")[0];
 701
 702                                 if (limit) {
 703                                         limit = limit.getAttribute("value");
 704                                 } else {
 705                                         limit = 0;
 706                                 }
 707
 708                                 var articles_found = 0;
 709
 710                                 for (var i = 0; i < articles.length; i++) {
 711                                         var a = eval("("+articles[i].firstChild.nodeValue+")");
 712                                         articles_found++;
 713                                         if (a) {
 714
 715                                                 db.execute("DELETE FROM articles WHERE id = ?", [a.id]);
 716
 717                                                 db.execute("INSERT INTO articles "+
 718                                                 "(id, feed_id, title, link, guid, updated, content, "+
 719                                                         "unread, marked, tags, comments) "+
 720                                                 "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
 721                                                         [a.id, a.feed_id, a.title, a.link, a.guid, a.updated,
 722                                                                 a.content, a.unread, a.marked, a.tags,
 723                                                                 a.comments]);
 724
 725                                                 if (a.labels.length > 0) {
 726                                                         for (var j = 0; j < a.labels.length; j++) {
 727                                                                 label_local_add_article(a.id, a.labels[j][0]);
 728                                                         }
 729                                                 }
 730
 731                                         }
 732                                 }
 733
 734                                 debug("downloaded articles: " + articles_found + " limit: " + limit);
 735
 736                                 articles_synced += articles_found;
 737
 738                                 var msg =__("Synchronizing articles (%d)...").replace("%d", articles_synced);
 739
 740                                 $("offlineModeSyncMsg").innerHTML = msg;
 741
 742                                 var has_sync_data = has_local_sync_data();
 743
 744                                 if (articles_found >= limit || has_sync_data) {
 745                                         sync_timer = window.setTimeout("update_offline_data("+(stage+1)+")",
 746                                                 3*1000);
 747                                         debug("<b>update_offline_data: done " + stage + " HSD: " +
 748                                                 has_sync_data + "</b>");
 749                                 } else {
 750                                         window.setTimeout("offlineDownloadStart()", 180*1000);
 751                                         debug("update_offline_data: finished");
 752
 753                                         var pic = $("offlineModePic");
 754
 755                                         if (pic) {
 756                                                 pic.src = "images/offline.png";
 757
 758                                                 var rs = db.execute("SELECT value FROM syncdata WHERE key = 'last_online'");
 759                                                 var last_sync = "";
 760
 761                                                 if (rs.isValidRow()) {
 762                                                         last_sync = rs.field(0).substring(0,16);
 763                                                 }
 764                                                 rs.close();
 765
 766                                                 var msg = __("Last sync: %s").replace("%s", last_sync);
 767
 768                                                 articles_synced = 0;
 769
 770                                                 $("offlineModeSyncMsg").innerHTML = msg;
 771                                         }
 772
 773                                         offlineSyncShowHideElems(false);
 774
 775                                         sync_in_progress = false;
 776
 777                                         db.execute("DELETE FROM articles WHERE "+
 778                                                 "updated < DATETIME('NOW', 'localtime', '-31 days')");
 779
 780                                 }
 781                         }
 782
 783                         update_local_sync_data();
 784
 785
 786 //                      notify('');
 787
 788                 } else {
 789                         sync_in_progress = false;
 790
 791                         var pic = $("offlineModePic");
 792
 793                         if (pic) {
 794                                 pic.src = "images/offline.png";
 795                                 var msg = __("Last sync: Error receiving data.");
 796                                 articles_synced = 0;
 797                                 $("offlineModeSyncMsg").innerHTML = msg;
 798                         }
 799
 800                         offlineSyncShowHideElems(false);
 801                 }
 802
 803         } catch (e) {
 804                 exception_error("offline_download_parse", e);
 805         }
 806 }
 807
 808 function update_offline_data(stage) {
 809         try {
 810
 811                 if (!stage) stage = 0;
 812
 813                 if (!db || offline_mode || getInitParam("offline_enabled") != "1") return;
 814
 815 //              notify_progress("Updating offline data... (" + stage +")", true);
 816
 817                 var query = "backend.php?op=rpc&subop=download";
 818
 819                 var rs = db.execute("SELECT MAX(id), MIN(id) FROM articles");
 820
 821                 if (rs.isValidRow() && rs.field(0)) {
 822                         var offline_dl_max_id = rs.field(0);
 823                         var offline_dl_min_id = rs.field(1);
 824
 825                         query = query + "&cidt=" + offline_dl_max_id;
 826                         query = query + "&cidb=" + offline_dl_min_id;
 827
 828                         stage = 1;
 829                 }
 830
 831                 rs.close();
 832
 833                 debug("update_offline_data: stage " + stage);
 834
 835                 query = query + "&stage=" + stage;
 836
 837                 var to_sync = prepare_local_sync_data();
 838
 839                 if (to_sync != "") {
 840                         to_sync = "?sync=" + param_escape(to_sync);
 841                 }
 842
 843                 debug(query + "/" + to_sync);
 844
 845                 var pic = $("offlineModePic");
 846
 847                 if (pic) {
 848                         pic.src = "images/offline-sync.gif";
 849                         if (articles_synced == 0) {
 850                                 $("offlineModeSyncMsg").innerHTML = __("Synchronizing...");
 851                         }
 852                 }
 853
 854                 offlineSyncShowHideElems(true);
 855
 856                 sync_in_progress = true;
 857
 858                 new Ajax.Request(query, {
 859                         parameters: to_sync,
 860                         onComplete: function(transport) {
 861                                 offline_download_parse(stage, transport);
 862                         } });
 863
 864         } catch (e) {
 865                 exception_error("initiate_offline_download", e);
 866         }
 867 }
 868
 869 function set_feedlist_counter(id, ctr, is_cat) {
 870         try {
 871
 872                 var feedctr = $("FEEDCTR-" + id);
 873                 var feedu = $("FEEDU-" + id);
 874                 var feedr = $("FEEDR-" + id);
 875
 876                 if (is_cat) {
 877                         var catctr = $("FCATCTR-" + id);
 878                         if (catctr) {
 879                                 catctr.innerHTML = "(" + ctr + ")";
 880                                 if (ctr > 0) {
 881                                         catctr.className = "catCtrHasUnread";
 882                                 } else {
 883                                         catctr.className = "catCtrNoUnread";
 884                                 }
 885                         }
 886                 } else if (feedctr && feedu && feedr) {
 887
 888                         var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 889
 890                         feedu.innerHTML = ctr;
 891
 892                         if (ctr > 0) {
 893                                 feedctr.className = "feedCtrHasUnread";
 894                                 if (!feedr.className.match("Unread")) {
 895                                         var is_selected = feedr.className.match("Selected");
 896
 897                                         feedr.className = feedr.className.replace("Selected", "");
 898                                         feedr.className = feedr.className.replace("Unread", "");
 899
 900                                         feedr.className = feedr.className + "Unread";
 901
 902                                         if (is_selected) {
 903                                                 feedr.className = feedr.className + "Selected";
 904                                         }
 905
 906                                 }
 907
 908                                 if (row_needs_hl) {
 909                                         new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 910                                                 queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 911                                 }
 912                         } else {
 913                                 feedctr.className = "feedCtrNoUnread";
 914                                 feedr.className = feedr.className.replace("Unread", "");
 915                         }
 916                 }
 917
 918         } catch (e) {
 919                 exception_error("set_feedlist_counter", e);
 920         }
 921 }
 922
 923 function update_local_feedlist_counters() {
 924         try {
 925                 if (!offline_mode || !db) return;
 926
 927 /*              var rs = db.execute("SELECT feeds.id,COUNT(articles.id) "+
 928                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 929                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 930                         "ORDER BY feeds.title"); */
 931
 932                 var rs = db.execute("SELECT id FROM feeds "+
 933                         "ORDER BY title");
 934
 935                 while (rs.isValidRow()) {
 936                         var id = rs.field(0);
 937                         var ctr = get_local_feed_unread(id);
 938                         set_feedlist_counter(id, ctr, false);
 939                         rs.next();
 940                 }
 941
 942                 rs.close();
 943
 944                 var rs = db.execute("SELECT cat_id,SUM(unread) "+
 945                         "FROM articles, feeds WHERE feeds.id = feed_id GROUP BY cat_id");
 946
 947                 while (rs.isValidRow()) {
 948                         var id = rs.field(0);
 949                         var ctr = rs.field(1);
 950                         set_feedlist_counter(id, ctr, true);
 951                         rs.next();
 952                 }
 953
 954                 rs.close();
 955
 956                 set_feedlist_counter(-2, get_local_category_unread(-2), true);
 957
 958                 set_feedlist_counter(-4, get_local_feed_unread(-4));
 959                 set_feedlist_counter(-1, get_local_feed_unread(-1));
 960
 961                 var rs = db.execute("SELECT id FROM labels");
 962
 963                 while (rs.isValidRow()) {
 964                         var id = -11 - rs.field(0);
 965                         var ctr = get_local_feed_unread(id);
 966                         set_feedlist_counter(id, ctr, false);
 967                         rs.next();
 968                 }
 969
 970                 rs.close();
 971
 972                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 973
 974                 global_unread = get_local_feed_unread(-4);
 975                 updateTitle();
 976
 977         } catch (e) {
 978                 exception_error("update_local_feedlist_counters", e);
 979         }
 980 }
 981
 982 function get_local_feed_unread(id) {
 983         try {
 984                 var rs;
 985
 986                 if (id == -4) {
 987                         rs = db.execute("SELECT SUM(unread) FROM articles");
 988                 } else if (id == -1) {
 989                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE marked = 1");
 990                 } else if (id > 0) {
 991                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE feed_id = ?", [id]);
 992                 } else if (id < -10) {
 993                         var label_id = -11 - id;
 994                         rs = db.execute("SELECT SUM(unread) FROM articles,article_labels "+
 995                                 "WHERE article_labels.id = articles.id AND label_id = ?", [label_id]);
 996                 }
 997
 998                 var a = false;
 999
1000                 if (rs.isValidRow()) {
1001                         a = rs.field(0);
1002                 } else {
1003                         a = 0;
1004                 }
1005
1006                 rs.close();
1007
1008                 return a;
1009
1010         } catch (e) {
1011                 exception_error("get_local_feed_unread", e);
1012         }
1013 }
1014
1015 function enable_offline_reading() {
1016         try {
1017
1018                 if (db && getInitParam("offline_enabled") == "1") {
1019                         init_local_sync_data();
1020                         Element.show("offlineModePic");
1021                         offlineDownloadStart();
1022                 }
1023
1024         } catch (e) {
1025                 exception_error("enable_offline_reading", e);
1026         }
1027 }
1028
1029 function init_gears() {
1030         try {
1031
1032                 if (window.google && google.gears) {
1033
1034                         try {
1035                                 localServer = google.gears.factory.create("beta.localserver");
1036                         } catch (e) {
1037                                 return;
1038                         }
1039
1040                         store = localServer.createManagedStore("tt-rss");
1041                         store.manifestUrl = "manifest.json.php";
1042
1043                         db = google.gears.factory.create('beta.database');
1044                         db.open('tt-rss');
1045
1046                         db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
1047
1048                         var rs = db.execute("SELECT schema_version FROM version");
1049
1050                         var version = "";
1051
1052                         if (rs.isValidRow()) {
1053                                 version = rs.field(0);
1054                         }
1055
1056                         rs.close();
1057
1058                         if (version != SCHEMA_VERSION) {
1059                                 db.execute("DROP TABLE IF EXISTS init_params");
1060                                 db.execute("DROP TABLE IF EXISTS cache");
1061                                 db.execute("DROP TABLE IF EXISTS feeds");
1062                                 db.execute("DROP TABLE IF EXISTS categories");
1063                                 db.execute("DROP TABLE IF EXISTS labels");
1064                                 db.execute("DROP TABLE IF EXISTS article_labels");
1065                                 db.execute("DROP TABLE IF EXISTS articles");
1066                                 db.execute("DROP INDEX IF EXISTS article_labels_label_id_idx");
1067                                 db.execute("DROP INDEX IF EXISTS articles_unread_idx");
1068                                 db.execute("DROP INDEX IF EXISTS articles_feed_id_idx");
1069                                 db.execute("DROP INDEX IF EXISTS articles_id_idx");
1070                                 db.execute("DROP INDEX IF EXISTS article_labels_id_idx");
1071                                 db.execute("DROP TABLE IF EXISTS version");
1072                                 db.execute("DROP TRIGGER IF EXISTS articles_update_unread");
1073                                 db.execute("DROP TRIGGER IF EXISTS articles_update_marked");
1074                                 db.execute("DROP TRIGGER IF EXISTS articles_remove_labelrefs");
1075                                 db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
1076                                 db.execute("DROP TABLE IF EXISTS syncdata");
1077                                 db.execute("INSERT INTO version (schema_version) VALUES (?)",
1078                                         [SCHEMA_VERSION]);
1079                         }
1080
1081                         db.execute("CREATE TABLE IF NOT EXISTS init_params (key text, value text)");
1082
1083                         db.execute("CREATE TABLE IF NOT EXISTS cache (id integer, article text, param text, added text)");
1084                         db.execute("CREATE TABLE IF NOT EXISTS feeds (id integer, title text, has_icon integer, cat_id integer)");
1085                         db.execute("CREATE TABLE IF NOT EXISTS categories (id integer, title text, collapsed integer)");
1086                         db.execute("CREATE TABLE IF NOT EXISTS labels (id integer, caption text, fg_color text, bg_color text)");
1087                         db.execute("CREATE TABLE IF NOT EXISTS article_labels (id integer, label_id integer)");
1088                         db.execute("CREATE TABLE IF NOT EXISTS articles (id integer, feed_id integer, title text, link text, guid text, updated timestamp, content text, tags text, unread integer, marked integer, added text, modified timestamp, comments text)");
1089
1090                         db.execute("CREATE INDEX IF NOT EXISTS articles_unread_idx ON articles(unread)");
1091                         db.execute("CREATE INDEX IF NOT EXISTS article_labels_label_id_idx ON article_labels(label_id)");
1092                         db.execute("CREATE INDEX IF NOT EXISTS articles_feed_id_idx ON articles(feed_id)");
1093                         db.execute("CREATE INDEX IF NOT EXISTS articles_id_idx ON articles(id)");
1094                         db.execute("CREATE INDEX IF NOT EXISTS article_labels_id_idx ON article_labels(id)");
1095
1096                         db.execute("CREATE TABLE IF NOT EXISTS syncdata (key integer, value text)");
1097
1098                         db.execute("DELETE FROM cache WHERE id LIKE 'F:%' OR id LIKE 'C:%'");
1099
1100                         db.execute("CREATE TRIGGER IF NOT EXISTS articles_update_unread "+
1101                                 "UPDATE OF unread ON articles "+
1102                                 "BEGIN "+
1103                                 "UPDATE articles SET modified = DATETIME('NOW', 'localtime') "+
1104                                 "WHERE id = OLD.id AND "+
1105                                 "OLD.unread != NEW.unread;"+
1106                                 "END;");
1107
1108                         db.execute("CREATE TRIGGER IF NOT EXISTS articles_update_marked "+
1109                                 "UPDATE OF marked ON articles "+
1110                                 "BEGIN "+
1111                                 "UPDATE articles SET modified = DATETIME('NOW', 'localtime') "+
1112                                 "WHERE id = OLD.id;"+
1113                                 "END;");
1114
1115                         db.execute("CREATE TRIGGER IF NOT EXISTS articles_remove_labelrefs "+
1116                                 "DELETE ON articles "+
1117                                 "BEGIN "+
1118                                 "DELETE FROM article_labels WHERE id = OLD.id; "+
1119                                 "END; ");
1120
1121                 }
1122
1123                 cache_expire();
1124
1125         } catch (e) {
1126                 exception_error("init_gears", e);
1127         }
1128 }
1129
1130 function gotoOffline() {
1131
1132 //      debug("[Local store] currentVersion = " + store.currentVersion);
1133
1134         var rs = db.execute("SELECT COUNT(*) FROM articles");
1135         var count = 0;
1136         if (rs.isValidRow()) {
1137                 count = rs.field(0);
1138         }
1139
1140         rs.close();
1141
1142         if (count == 0) {
1143                 notify_error("You have to synchronize some articles before going into offline mode.");
1144                 return;
1145         }
1146
1147         if (confirm(__("Switch Tiny Tiny RSS into offline mode?"))) {
1148
1149                 store.checkForUpdate();
1150
1151                 notify_progress("Preparing offline mode...");
1152
1153                 var timerId = window.setInterval(function() {
1154                         if (store.currentVersion) {
1155                                 window.clearInterval(timerId);
1156                                 debug("[Local store] sync complete: " + store.currentVersion);
1157
1158                                 //window.location.href = "tt-rss.php";
1159
1160                                 offlineDownloadStop();
1161                                 offline_mode = true;
1162                                 init_offline();
1163
1164                                 notify_info("Tiny Tiny RSS is in offline mode.");
1165
1166                         } else if (store.updateStatus == 3) {
1167                                 debug("[Local store] sync error: " + store.lastErrorMessage);
1168                                 notify_error(store.lastErrorMessage, true);
1169                         } }, 500);
1170         }
1171 }
1172
1173 function gotoOnline() {
1174         if (confirm(__("You won't be able to access offline version of Tiny Tiny RSS until you switch it into offline mode again. Go online?"))) {
1175                 localServer.removeManagedStore("tt-rss");
1176                 window.location.href = "tt-rss.php";
1177         }
1178 }
1179
1180 function local_collapse_cat(id) {
1181         try {
1182                 if (db) {
1183                         db.execute("UPDATE categories SET collapsed = NOT collapsed WHERE id = ?",
1184                                 [id]);
1185                 }
1186         } catch (e) {
1187                 exception_error("local_collapse_cat", e);
1188         }
1189 }
1190
1191 function get_local_category_title(id) {
1192         try {
1193
1194                 var rs = db.execute("SELECT title FROM categories WHERE id = ?", [id]);
1195                 var tmp = "";
1196
1197                 if (rs.isValidRow()) {
1198                         tmp = rs.field(0);
1199                 }
1200
1201                 rs.close();
1202
1203                 return tmp;
1204
1205         } catch (e) {
1206                 exception_error("get_local_category_title", e);
1207         }
1208 }
1209
1210 function get_local_category_unread(id) {
1211         try {
1212                 var rs = false;
1213
1214                 if (id >= 0) {
1215                         rs = db.execute("SELECT SUM(unread) FROM articles, feeds "+
1216                                 "WHERE feeds.id = feed_id AND cat_id = ?", [id]);
1217                 } else if (id == -2) {
1218                         rs = db.execute("SELECT SUM(unread) FROM article_labels, articles "+
1219                                 "where article_labels.id = articles.id");
1220                 } else {
1221                         return 0;
1222                 }
1223
1224                 var tmp = 0;
1225
1226                 if (rs.isValidRow()) {
1227                         tmp = rs.field(0);
1228                 }
1229
1230                 rs.close();
1231
1232                 return tmp;
1233
1234         } catch (e) {
1235                 exception_error("get_local_category_unread", e);
1236         }
1237 }
1238
1239 function printCategoryHeader(cat_id, hidden, can_browse) {
1240         try {
1241                 if (hidden == undefined) hidden = false;
1242                 if (can_browse == undefined) can_browse = false;
1243
1244                         var tmp_category = get_local_category_title(cat_id);
1245                         var tmp = "";
1246
1247                         var cat_unread = get_local_category_unread(cat_id);
1248
1249                         var holder_style = "";
1250                         var ellipsis = "";
1251
1252                         if (hidden) {
1253                                 holder_style = "display:none;";
1254                                 ellipsis = "…";
1255                         }
1256
1257                         var catctr_class = (cat_unread > 0) ? "catCtrHasUnread" : "catCtrNoUnread";
1258
1259                         var browse_cat_link = "";
1260                         var inner_title_class = "catTitleNL";
1261
1262                         if (can_browse) {
1263                                 browse_cat_link = "onclick=\"javascript:viewCategory("+cat_id+")\"";
1264                                 inner_title_class = "catTitle";
1265                         }
1266
1267                         var cat_class = "feedCat";
1268
1269                         tmp += "<li class=\""+cat_class+"\" id=\"FCAT-"+cat_id+"\">"+
1270                                 "<img onclick=\"toggleCollapseCat("+cat_id+")\" class=\"catCollapse\""+
1271                                         " title=\""+__('Click to collapse category')+"\""+
1272                                         " src=\"images/cat-collapse.png\"><span class=\""+inner_title_class+"\" "+
1273                                         " id=\"FCATN-"+cat_id+"\" "+browse_cat_link+
1274                                 "\">"+tmp_category+"</span>";
1275
1276                         tmp += "<span id=\"FCAP-"+cat_id+"\">";
1277
1278                         tmp += " <span id=\"FCATCTR-"+cat_id+"\" "+
1279                                 "class=\""+catctr_class+"\">("+cat_unread+")</span> "+ellipsis;
1280
1281                         tmp += "</span>";
1282
1283                         tmp += "<ul class=\"feedCatList\" id=\"FCATLIST-"+cat_id+"\" "+
1284                                 "style='"+holder_style+"'>";
1285
1286                         return tmp;
1287         } catch (e) {
1288                 exception_error("printCategoryHeader", e);
1289         }
1290 }
1291
1292 function is_local_cat_collapsed(id) {
1293         try {
1294
1295                 var rs = db.execute("SELECT collapsed FROM categories WHERE id = ?", [id]);
1296                 var cat_hidden = 0;
1297
1298                 if (rs.isValidRow()) {
1299                         cat_hidden = rs.field(0);
1300                 }
1301
1302                 rs.close();
1303
1304                 return cat_hidden == "1";
1305
1306         } catch (e) {
1307                 exception_error("is_local_cat_collapsed", e);
1308         }
1309 }
1310
1311 function get_local_article_labels(id) {
1312         try {
1313                 var rs = db.execute("SELECT DISTINCT label_id,caption,fg_color,bg_color "+
1314                         "FROM labels, article_labels "+
1315                         "WHERE labels.id = label_id AND article_labels.id = ?", [id]);
1316
1317                 var tmp = new Array();
1318
1319                 while (rs.isValidRow()) {
1320                         var e = new Array();
1321
1322                         e[0] = rs.field(0);
1323                         e[1] = rs.field(1);
1324                         e[2] = rs.field(2);
1325                         e[3] = rs.field(3);
1326
1327                         tmp.push(e);
1328
1329                         rs.next();
1330                 }
1331
1332                 return tmp;
1333
1334         } catch (e) {
1335                 exception_error("get_local_article_labels", e);
1336         }
1337 }
1338
1339 function label_local_add_article(id, label_id) {
1340         try {
1341                 //debug("label_local_add_article " + id + " => " + label_id);
1342
1343                 var rs = db.execute("SELECT COUNT(id) FROM article_labels WHERE "+
1344                         "id = ? AND label_id = ?", [id, label_id]);
1345                 var check = rs.field(0);
1346
1347                 if (rs.isValidRow()) {
1348                         var check = rs.field(0);
1349                 }
1350                 rs.close();
1351
1352                 if (check == 0) {
1353                         db.execute("INSERT INTO article_labels (id, label_id) VALUES "+
1354                                 "(?,?)", [id, label_id]);
1355                 }
1356
1357         } catch (e) {
1358                 exception_error("label_local_add_article", e);
1359         }
1360 }
1361
1362 function get_local_feed_title(id) {
1363         try {
1364
1365                 var feed_title = "Unknown feed: " + id;
1366
1367                 if (id > 0) {
1368                         var rs = db.execute("SELECT title FROM feeds WHERE id = ?", [id]);
1369
1370                         if (rs.isValidRow()) {
1371                                 feed_title = rs.field(0);
1372                         }
1373
1374                         rs.close();
1375                 } else if (id == -1) {
1376                         feed_title = __("Starred articles");
1377                 } else if (id == -4) {
1378                         feed_title = __("All articles");
1379                 } else if (id < -10) {
1380
1381                         var label_id = -11 - id;
1382
1383                         var rs = db.execute("SELECT caption FROM labels WHERE id = ?", [label_id]);
1384
1385                         if (rs.isValidRow()) {
1386                                 feed_title = rs.field(0);
1387                         }
1388
1389                         rs.close();
1390                 }
1391
1392                 return feed_title;
1393
1394         } catch (e) {
1395                 exception_error("get_local_feed_title", e);
1396         }
1397 }
1398
1399 function format_article_labels(labels, id) {
1400         try {
1401
1402                 var labels_str = "";
1403
1404                 if (!labels) return "";
1405
1406                 for (var i = 0; i < labels.length; i++) {
1407                         var l = labels[i];
1408
1409                         labels_str += "<span class='hlLabelRef' "+
1410                                 "style='color : "+l[2]+"; background-color : "+l[3]+"'>"+l[1]+"</span>";
1411                 }
1412
1413                 return labels_str;
1414
1415         } catch (e) {
1416                 exception_error("format_article_labels", e);
1417         }
1418 }
1419
1420 function init_local_sync_data() {
1421         try {
1422
1423                 if (!db) return;
1424
1425                 var rs = db.execute("SELECT COUNT(*) FROM syncdata WHERE key = 'last_online'");
1426                 var has_last_online = 0;
1427
1428                 if (rs.isValidRow()) {
1429                         has_last_online = rs.field(0);
1430                 }
1431
1432                 rs.close();
1433
1434                 if (!has_last_online) {
1435                         db.execute("INSERT INTO syncdata (key, value) VALUES ('last_online', '')");
1436                 }
1437
1438         } catch (e) {
1439                 exception_error("init_local_sync_data", e);
1440
1441         }
1442 }
1443
1444 function has_local_sync_data() {
1445         try {
1446
1447                 var rs = db.execute("SELECT id FROM articles "+
1448                         "WHERE modified > (SELECT value FROM syncdata WHERE key = 'last_online') "+
1449                         "LIMIT 1");
1450
1451                 var tmp = 0;
1452
1453                 if (rs.isValidRow()) {
1454                         tmp = rs.field(0);
1455                 }
1456
1457                 rs.close();
1458
1459                 return tmp != 0;
1460
1461         } catch (e) {
1462                 exception_error("has_local_sync_data", e);
1463         }
1464 }
1465
1466 function prepare_local_sync_data() {
1467         try {
1468                 var rs = db.execute("SELECT value FROM syncdata WHERE key = 'last_online'");
1469
1470                 var last_online = "";
1471
1472                 if (rs.isValidRow()) {
1473                         last_online = rs.field(0);
1474                 }
1475
1476                 rs.close();
1477
1478                 var rs = db.execute("SELECT id,unread,marked FROM articles "+
1479                         "WHERE modified > ? LIMIT 200", [last_online]);
1480
1481                 var tmp = last_online + ";";
1482
1483                 var entries = 0;
1484
1485                 while (rs.isValidRow()) {
1486                         var e = new Array();
1487
1488                         tmp = tmp + rs.field(0) + "," + rs.field(1) + "," + rs.field(2) + ";";
1489                         entries++;
1490
1491                         rs.next();
1492                 }
1493
1494                 rs.close();
1495
1496                 if (entries > 0) {
1497                         return tmp;
1498                 } else {
1499                         return '';
1500                 }
1501
1502         } catch (e) {
1503                 exception_error("prepare_local_sync_data", e);
1504         }
1505 }
1506
1507 function update_local_sync_data() {
1508         try {
1509                 if (db && !offline_mode) {
1510
1511                         var rs = db.execute("SELECT id FROM articles "+
1512                                 "WHERE modified > (SELECT value FROM syncdata WHERE "+
1513                                         "key = 'last_online') LIMIT 1")
1514
1515                         var f_id = 0;
1516
1517                         if (rs.isValidRow()) {
1518                                 f_id = rs.field(0);
1519                         }
1520
1521                         rs.close();
1522
1523                         /* no pending articles to sync */
1524
1525                         if (f_id == 0) {
1526                                 db.execute("UPDATE syncdata SET value = DATETIME('NOW', 'localtime') "+
1527                                         "WHERE key = 'last_online'");
1528                         }
1529
1530                 }
1531         } catch (e) {
1532                 exception_error("update_local_sync_data", e);
1533         }
1534 }
1535
1536 function catchup_local_feed(id, is_cat) {
1537         try {
1538                 if (!db) return;
1539
1540                 if (!is_cat) {
1541                         if (id >= 0) {
1542                                 db.execute("UPDATE articles SET unread = 0 WHERE feed_id = ?", [id]);
1543                         } else if (id == -1) {
1544                                 db.execute("UPDATE articles SET unread = 0 WHERE marked = 1");
1545                         } else if (id == -4) {
1546                                 db.execute("UPDATE articles SET unread = 0");
1547                         } else if (id < -10) {
1548                                 var label_id = -11-id;
1549
1550                                 db.execute("UPDATE articles SET unread = 0 WHERE "+
1551                                         "(SELECT COUNT(*) FROM article_labels WHERE "+
1552                                         "article_labels.id = articles.id AND label_id = ?) > 0", [label_id]);
1553                         }
1554                 }
1555
1556                 update_local_feedlist_counters();
1557
1558         } catch (e) {
1559                 exception_error("catchup_local_feed", e);
1560         }
1561 }
1562
1563 function toggleOfflineModeInfo() {
1564         try {
1565                 var e = $('offlineModeDrop');
1566                 var p = $('offlineModePic');
1567
1568                 if (Element.visible(e)) {
1569                         Element.hide(e);
1570                 } else {
1571                         Element.show(e);
1572                 }
1573
1574         } catch (e) {
1575                 exception_error("toggleOfflineModeInfo", e);
1576         }
1577 }
1578
1579 function offlineDownloadStart() {
1580         try {
1581                 if (db && !sync_in_progress && getInitParam("offline_enabled") == "1") {
1582                         window.setTimeout("update_offline_data(0)", 100);
1583                 }
1584         } catch (e) {
1585                 exception_error("offlineDownloadStart", e);
1586         }
1587 }
1588
1589 function offlineDownloadStop() {
1590         try {
1591                 if (db && sync_in_progress && getInitParam("offline_enabled") == "1") {
1592
1593                         sync_in_progress = false;
1594
1595                         if (sync_timer) {
1596                                 window.clearTimeout(sync_timer);
1597                                 sync_timer = false;
1598                         }
1599
1600                         var pic = $("offlineModePic");
1601
1602                         if (pic) {
1603                                 pic.src = "images/offline.png";
1604                                 var msg = __("Last sync: Cancelled.");
1605                                 articles_synced = 0;
1606                                 $("offlineModeSyncMsg").innerHTML = msg;
1607                         }
1608
1609                         offlineSyncShowHideElems(false);
1610
1611                 }
1612         } catch (e) {
1613                 exception_error("offlineDownloadStart", e);
1614         }
1615 }
1616
1617 function offlineClearData() {
1618         try {
1619                 if (db) {
1620
1621                         if (confirm(__("This will remove all offline data stored by Tiny Tiny RSS on this computer. Continue?"))) {
1622
1623                                 notify_progress("Removing offline data...");
1624
1625                                 localServer.removeManagedStore("tt-rss");
1626
1627                                 db.execute("DELETE FROM articles");
1628                                 db.execute("DELETE FROM article_labels");
1629                                 db.execute("DELETE FROM labels");
1630                                 db.execute("DELETE FROM feeds");
1631                                 db.execute("DELETE FROM cache");
1632
1633                                 notify_info("Local data removed.");
1634                         }
1635                 }
1636         } catch (e) {
1637                 exception_error("offlineClearData", e);
1638         }
1639 }
1640
1641 function offlineUpdateStore() {
1642         try {
1643
1644                 if (offline_mode) return;
1645
1646         } catch (e) {
1647                 exception_error("offlineUpdateStore", e);
1648         }
1649 }
1650
1651 function offlineSyncShowHideElems(syncing) {
1652         try {
1653
1654                 var elems = $$("div.hideWhenSyncing");
1655
1656                 for (var j = 0; j < elems.length; j++) {
1657                         if (syncing) {
1658                                 Element.hide(elems[j]);
1659                         } else {
1660                                 Element.show(elems[j]);
1661                         }
1662                 }
1663
1664                 var elems = $$("div.showWhenSyncing");
1665
1666                 for (var j = 0; j < elems.length; j++) {
1667                         if (syncing) {
1668                                 Element.show(elems[j]);
1669                         } else {
1670                                 Element.hide(elems[j]);
1671                         }
1672                 }
1673
1674         } catch (e) {
1675                 exception_error("offlineSyncShowHideElems", e);
1676         }
1677 }