offline.js

   1 var SCHEMA_VERSION = 3;
   2
   3 var offline_mode = false;
   4 var store = false;
   5 var localServer = false;
   6 var db = false;
   7
   8 function view_offline(id, feed_id) {
   9         try {
  10
  11                 enableHotkeys();
  12                 showArticleInHeadlines(id);
  13
  14                 db.execute("UPDATE articles SET unread = 0 WHERE id = ?", [id]);
  15
  16                 var rs = db.execute("SELECT * FROM articles WHERE id = ?", [id]);
  17
  18                 if (rs.isValidRow()) {
  19
  20                         var tmp = "<div class=\"postReply\">";
  21
  22                         tmp += "<div class=\"postHeader\" onmouseover=\"enable_resize(true)\" "+
  23                                 "onmouseout=\"enable_resize(false)\">";
  24
  25                         tmp += "<div class=\"postDate\">"+rs.fieldByName("updated")+"</div>";
  26
  27                         if (rs.fieldByName("link") != "") {
  28                                 tmp += "<div clear='both'><a target=\"_blank\" "+
  29                                         "href=\"" + rs.fieldByName("link") + "\">" +
  30                                         rs.fieldByName("title") + "</a></div>";
  31                         } else {
  32                                 tmp += "<div clear='both'>" + rs.fieldByName("title") + "</div>";
  33                         }
  34
  35                         tmp += "<div style='float : right'> "+
  36                                 "<img src='images/tag.png' class='tagsPic' alt='Tags' title='Tags'>";
  37                         tmp += rs.fieldByName("tags");
  38                         tmp += "</div>";
  39
  40                         tmp += "<div clear='both'>"+
  41                                 "<a target=\"_blank\" "+
  42                                         "href=\"" + rs.fieldByName("comments") + "\">" +
  43                                         __("comments") + "</a></div>";
  44
  45                         tmp += "</div>";
  46
  47                         tmp += "<div class=\"postContent\">"
  48                         tmp += rs.fieldByName("content");
  49                         tmp += "</div>";
  50
  51                         tmp += "</div>";
  52
  53                         render_article(tmp);
  54                         update_local_feedlist_counters();
  55                 }
  56
  57                 rs.close();
  58
  59                 return false;
  60
  61         } catch (e) {
  62                 exception_error("view_offline", e);
  63         }
  64 }
  65
  66 function viewfeed_offline(feed_id, subop, is_cat, subop_param, skip_history, offset) {
  67         try {
  68                 notify('');
  69
  70                 if (!offset) offset = 0;
  71
  72                 if (offset > 0) {
  73                         _feed_cur_page = parseInt(offset);
  74                         if (_infscroll_request_sent) {
  75                                 return;
  76                         }
  77                 } else {
  78                         _feed_cur_page = 0;
  79                         _infscroll_disable = 0;
  80                 }
  81
  82                 if (getActiveFeedId() != feed_id) {
  83                         _feed_cur_page = 0;
  84                         active_post_id = 0;
  85                         _infscroll_disable = 0;
  86                 }
  87
  88                 loading_set_progress(100);
  89
  90                 clean_feed_selections();
  91
  92                 setActiveFeedId(feed_id, is_cat);
  93
  94                 if (!is_cat) {
  95                         var feedr = document.getElementById("FEEDR-" + feed_id);
  96                         if (feedr && !feedr.className.match("Selected")) {
  97                                 feedr.className = feedr.className + "Selected";
  98                         }
  99                 } else {
 100                         var feedr = document.getElementById("FCAT-" + feed_id);
 101                         if (feedr && !feedr.className.match("Selected")) {
 102                                 feedr.className = feedr.className + "Selected";
 103                         }
 104                 }
 105
 106                 disableContainerChildren("headlinesToolbar", false);
 107                 Form.enable("main_toolbar_form");
 108
 109                 var f = document.getElementById("headlines-frame");
 110                 try {
 111                         if (reply.offset == 0) {
 112                                 debug("resetting headlines scrollTop");
 113                                 f.scrollTop = 0;
 114                         }
 115                 } catch (e) { };
 116
 117
 118                 var tmp = "";
 119
 120                 rs = db.execute("SELECT title FROM feeds WHERE id = ?", [feed_id]);
 121
 122                 if (rs.isValidRow() || feed_id == -1 || feed_id == -4) {
 123
 124                         feed_title = rs.field(0);
 125
 126                         if (feed_id == -1) {
 127                                 feed_title = __("Starred articles");
 128                         }
 129
 130                         if (feed_id == -4) {
 131                                 feed_title = __("All articles");
 132                         }
 133
 134                         if (offset == 0) {
 135                                 tmp += "<div id=\"headlinesContainer\">";
 136
 137                                 tmp += "<div class=\"headlinesSubToolbar\">";
 138                                 tmp += "<div id=\"subtoolbar_ftitle\">";
 139                                 tmp += feed_title;
 140                                 tmp += "</div>";
 141
 142                                 var sel_all_link;
 143                                 var sel_unread_link;
 144                                 var sel_none_link;
 145                                 var sel_inv_link;
 146
 147                                 if (document.getElementById("content-frame")) {
 148                                         sel_all_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, '', true)";
 149                                         sel_unread_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true)";
 150                                         sel_none_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false)";
 151                                         sel_inv_link = "javascript:invertHeadlineSelection()";
 152                                 } else {
 153                                         sel_all_link = "javascript:cdmSelectArticles('all')";
 154                                         sel_unread_link = "javascript:cdmSelectArticles('unread')";
 155                                         sel_none_link = "javascript:cdmSelectArticles('none')";
 156                                         sel_inv_link = "javascript:invertHeadlineSelection()";
 157                                 }
 158
 159                                 tmp += __('Select:')+
 160                                         " <a href=\""+sel_all_link+"\">"+__('All')+"</a>, "+
 161                                         "<a href=\""+sel_unread_link+"\">"+__('Unread')+"</a>, "+
 162                                         "<a href=\""+sel_inv_link+"\">"+__('Invert')+"</a>, "+
 163                                         "<a href=\""+sel_none_link+"\">"+__('None')+"</a>";
 164
 165                                 tmp += "&nbsp;&nbsp;";
 166
 167                                 tmp += "</div>";
 168
 169                                 tmp += "<div id=\"headlinesInnerContainer\" onscroll=\"headlines_scroll_handler()\">";
 170                                 if (document.getElementById("content-frame")) {
 171                                         tmp += "<table class=\"headlinesList\" id=\"headlinesList\" cellspacing=\"0\">";
 172                                 }
 173
 174                         }
 175
 176                         var limit = 30;
 177
 178                         var toolbar_form = document.forms["main_toolbar_form"];
 179
 180                         var limit = toolbar_form.limit[toolbar_form.limit.selectedIndex].value;
 181                         var view_mode = toolbar_form.view_mode[toolbar_form.view_mode.selectedIndex].value;
 182
 183                         var limit_qpart = "";
 184                         var strategy_qpart = "";
 185                         var mode_qpart = "";
 186                         var offset_qpart = "";
 187
 188                         if (limit != 0) {
 189                                 limit_qpart = "LIMIT " + limit;
 190                         }
 191
 192                         if (view_mode == "all_articles") {
 193                                 mode_qpart = "1";
 194                         } else if (view_mode == "adaptive") {
 195                                 if (get_local_feed_unread(feed_id) > 0) {
 196                                         mode_qpart = "unread = 1";
 197                                 } else {
 198                                         mode_qpart = "1";
 199                                 }
 200                         } else if (view_mode == "marked") {
 201                                 mode_qpart = "marked = 1";
 202                         } else if (view_mode == "unread") {
 203                                 mode_qpart = "unread = 1";
 204                         } else {
 205                                 mode_qpart = "1";
 206                         }
 207
 208                         if (feed_id > 0) {
 209                                 strategy_qpart = "feed_id = " + feed_id;
 210                         } else if (feed_id == -1) {
 211                                 strategy_qpart = "marked = 1";
 212                         } else if (feed_id == -4) {
 213                                 strategy_qpart = "1";
 214                         }
 215
 216                         if (offset > 0) {
 217                                 offset_qpart = "OFFSET " + (offset*30);
 218                         } else {
 219                                 offset_qpart = "";
 220                         }
 221
 222                         var query = "SELECT * FROM articles WHERE " +
 223                                 strategy_qpart +
 224                                 " AND " + mode_qpart +
 225                                 " ORDER BY updated DESC "+
 226                                 limit_qpart + " " +
 227                                 offset_qpart;
 228
 229                         var rs = db.execute(query);
 230
 231                         var line_num = offset*30;
 232
 233                         while (rs.isValidRow()) {
 234
 235                                 var id = rs.fieldByName("id");
 236                                 var feed_id = rs.fieldByName("feed_id");
 237
 238                                 var marked_pic;
 239
 240                                 var row_class = (line_num % 2) ? "even" : "odd";
 241
 242                                 if (rs.fieldByName("unread") == "1") {
 243                                         row_class += "Unread";
 244                                 }
 245
 246                                 if (rs.fieldByName("marked") == "1") {
 247                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 248                                                 "src=\"images/mark_set.png\" class=\"markedPic\""+
 249                                                 "alt=\"Unstar article\" onclick='javascript:tMark("+id+")'>";
 250                                 } else {
 251                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 252                                                 "src=\"images/mark_unset.png\" class=\"markedPic\""+
 253                                                 "alt=\"Star article\" onclick='javascript:tMark("+id+")'>";
 254                                 }
 255
 256                                 var mouseover_attrs = "onmouseover='postMouseIn($id)' "+
 257                                         "onmouseout='postMouseOut($id)'";
 258
 259                                 var content_preview = truncate_string(strip_tags(rs.fieldByName("content")),
 260                                                 100);
 261
 262                                 if (document.getElementById("content-frame")) {
 263
 264                                         tmp += "<tr class='"+row_class+"' id='RROW-"+id+"' "+mouseover_attrs+">";
 265
 266                                         tmp += "<td class='hlUpdPic'> </td>";
 267
 268                                         tmp += "<td class='hlSelectRow'>"+
 269                                                 "<input type=\"checkbox\" onclick=\"tSR(this)\" id=\"RCHK-"+id+"\"></td>";
 270
 271                                         tmp += "<td class='hlMarkedPic'>"+marked_pic+"</td>";
 272
 273                                         tmp += "<td onclick='view("+id+","+feed_id+")' "+
 274                                                 "class='hlContent' valign='middle'>";
 275
 276                                         tmp += "<a target=\"_blank\" id=\"RTITLE-$id\" href=\"" +
 277                                                 rs.fieldByName("link") + "\"" +
 278                                                 "onclick=\"return view("+id+","+feed_id+");\">"+
 279                                                 rs.fieldByName("title");
 280
 281                                         tmp += "<span class=\"contentPreview\"> - "+content_preview+"</span>";
 282
 283                                         tmp += "</a>";
 284
 285                                         tmp += "</td>";
 286
 287                                         tmp += "<td class=\"hlUpdated\" onclick='view("+id+","+feed_id+")'>"+
 288                                                 "<nobr>"+rs.fieldByName("updated").substring(0,16)+
 289                                                 "</nobr></td>";
 290
 291                                         tmp += "</tr>";
 292                                 } else {
 293
 294                                         var add_class = "";
 295
 296                                         if (rs.fieldByName("unread") == "1") {
 297                                                 add_class = "Unread";
 298                                         }
 299
 300                                         tmp += "<div class=\"cdmArticle"+add_class+"\" id=\"RROW-"+id+"\" "+
 301                                                 mouseover_attrs+"'>";
 302
 303                                         feed_icon_img = "<img class=\"tinyFeedIcon\" src=\""+
 304                                                 getInitParam("icons_url")+"/"+feed_id+".ico\" alt=\"\">";
 305                                         cdm_feed_icon = "<span style=\"cursor : pointer\" "+
 306                                                 "onclick=\"viewfeed("+feed_id+")\">"+feed_icon_img+"</span>";
 307
 308                                         tmp += "<div class=\"cdmHeader\">";
 309                                         tmp += "<div class=\"articleUpdated\">"+
 310                                                 rs.fieldByName("updated").substring(0,16)+
 311                                                 " "+cdm_feed_icon+"</div>";
 312
 313                                         tmp += "<span id=\"RTITLE-"+id+"\" class=\"titleWrap\">"+
 314                                                 "<a class=\"title\" onclick=\"javascript:toggleUnread("+id+", 0)\""+
 315                                                 "target=\"_blank\" href=\""+rs.fieldByName("link")+
 316                                                 "\">"+rs.fieldByName("title")+"</a>";
 317                                         tmp += "</span></div>";
 318
 319                                         tmp += "<div class=\"cdmContent\" onclick=\"cdmClicked("+id+")\""+
 320                                                 "id=\"CICD-"+id+"\">";
 321                                         tmp += rs.fieldByName("content");
 322                                         tmp += "<br clear='both'>"
 323                                         tmp += "</div>";
 324
 325                                         tmp += "<div class=\"cdmFooter\"><span class='s0'>";
 326                                         tmp += __("Select:")+
 327                                                 " <input type=\"checkbox\" "+
 328                                                 "onclick=\"toggleSelectRowById(this, 'RROW-"+id+"')\" "+
 329                                                 "class=\"feedCheckBox\" id=\"RCHK-"+id+"\">";
 330
 331                                         tmp += "</span><span class='s1'>"+marked_pic+"</span> ";
 332
 333                                         tmp += "<span class='s1'>"+
 334                                                 "<img class='tagsPic' src='images/tag.png' alt='Tags' title='Tags'>"+
 335                                                 "<span id=\"ATSTR-"+id+"\">"+rs.fieldByName("tags")+"</span>"+
 336                                                 "</span>";
 337
 338                                         tmp += "<span class='s2'>Toggle: <a class=\"cdmToggleLink\""+
 339                                                 "href=\"javascript:toggleUnread("+id+")\">"+
 340                                                 "Unread</a></span>";
 341                                         tmp += "</div>";
 342
 343                                         tmp += "</div>";
 344                                 }
 345
 346                                 rs.next();
 347                                 line_num++;
 348                         }
 349
 350                         if (line_num - offset*30 < 30) {
 351                                 _infscroll_disable = 1;
 352                         }
 353
 354                         rs.close();
 355
 356                         if (offset == 0) {
 357                                 tmp += "</table>";
 358                                 tmp += "</div></div>";
 359                         }
 360
 361                         if (offset == 0) {
 362                                 var container = document.getElementById("headlines-frame");
 363                                 container.innerHTML = tmp;
 364                         } else {
 365                                 var ids = getSelectedArticleIds2();
 366
 367                                 var container = document.getElementById("headlinesList");
 368                                 container.innerHTML = container.innerHTML + tmp;
 369
 370                                 for (var i = 0; i < ids.length; i++) {
 371                                         markHeadline(ids[i]);
 372                                 }
 373                         }
 374                 }
 375
 376                 remove_splash();
 377
 378                 _infscroll_request_sent = 0;
 379
 380         } catch (e) {
 381                 exception_error("viewfeed_offline", e);
 382         }
 383 }
 384
 385 function render_offline_feedlist() {
 386         try {
 387                 var tmp = "<ul class=\"feedList\" id=\"feedList\">";
 388
 389                 var unread = get_local_feed_unread(-4);
 390
 391                 global_unread = unread;
 392                 updateTitle();
 393
 394                 tmp += printFeedEntry(-4, __("All articles"), "feed", unread,
 395                         "images/tag.png");
 396
 397                 var unread = get_local_feed_unread(-1);
 398
 399                 tmp += printFeedEntry(-1, __("Starred articles"), "feed", unread,
 400                         "images/mark_set.png");
 401
 402                 tmp += "<li><hr/></li>";
 403
 404                 var rs = db.execute("SELECT feeds.id,feeds.title,has_icon,COUNT(articles.id) "+
 405                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 406                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 407                         "ORDER BY feeds.title");
 408
 409                 while (rs.isValidRow()) {
 410
 411                         var id = rs.field(0);
 412                         var title = rs.field(1);
 413                         var has_icon = rs.field(2);
 414                         var unread = rs.field(3);
 415
 416                         var icon = "";
 417
 418                         if (has_icon) {
 419                                 icon = "icons/" + id + ".ico";
 420                         }
 421
 422
 423                         var feed_icon = "";
 424
 425                         var row_class = "feed";
 426
 427                         if (unread > 0) {
 428                                 row_class += "Unread";
 429                                 fctr_class = "feedCtrHasUnread";
 430                         } else {
 431                                 fctr_class = "feedCtrNoUnread";
 432                         }
 433
 434                         tmp += printFeedEntry(id, title, "feed", unread, icon);
 435
 436                         rs.next();
 437                 }
 438
 439                 rs.close();
 440
 441                 tmp += "</ul>";
 442
 443                 render_feedlist(tmp);
 444         } catch (e) {
 445                 exception_error("render_offline_feedlist", e);
 446         }
 447 }
 448
 449 function init_offline() {
 450         try {
 451                 offline_mode = true;
 452
 453                 Element.hide("dispSwitchPrompt");
 454                 Element.hide("feedBrowserPrompt");
 455
 456                 var tb_form = document.getElementById("main_toolbar_form");
 457                 Element.hide(tb_form.update);
 458
 459                 var top_links = document.getElementById("topLinks");
 460                 top_links.innerHTML = __("Offline mode");
 461
 462                 var chooser = document.getElementById("quickMenuChooser");
 463                 chooser.disabled = true;
 464
 465                 var rs = db.execute("SELECT key, value FROM init_params");
 466
 467                 while (rs.isValidRow()) {
 468                         init_params[rs.field(0)] = rs.field(1);
 469                         rs.next();
 470                 }
 471
 472                 rs.close();
 473
 474                 render_offline_feedlist();
 475                 init_second_stage();
 476                 remove_splash();
 477         } catch (e) {
 478                 exception_error("init_offline", e);
 479         }
 480 }
 481
 482 function offline_download_parse(stage, transport) {
 483         try {
 484                 if (transport.responseXML) {
 485
 486                         if (stage == 0) {
 487
 488                                 var feeds = transport.responseXML.getElementsByTagName("feed");
 489
 490                                 if (feeds.length > 0) {
 491                                         db.execute("DELETE FROM feeds");
 492                                 }
 493
 494                                 for (var i = 0; i < feeds.length; i++) {
 495                                         var id = feeds[i].getAttribute("id");
 496                                         var has_icon = feeds[i].getAttribute("has_icon");
 497                                         var title = feeds[i].firstChild.nodeValue;
 498
 499                                         db.execute("INSERT INTO feeds (id,title,has_icon)"+
 500                                                 "VALUES (?,?,?)",
 501                                                 [id, title, has_icon]);
 502                                 }
 503
 504                                 window.setTimeout("update_offline_data("+(stage+1)+")", 60*1000);
 505                         } else {
 506
 507                                 var articles = transport.responseXML.getElementsByTagName("article");
 508
 509                                 var articles_found = 0;
 510
 511                                 for (var i = 0; i < articles.length; i++) {
 512                                         var a = eval("("+articles[i].firstChild.nodeValue+")");
 513                                         articles_found++;
 514                                         if (a) {
 515
 516                                                 var date = new Date();
 517                                                 var ts = Math.round(date.getTime() / 1000);
 518
 519                                                 db.execute("DELETE FROM articles WHERE id = ?", [a.id]);
 520                                                 db.execute("INSERT INTO articles "+
 521                                                 "(id, feed_id, title, link, guid, updated, content, "+
 522                                                         "unread, marked, tags, added, comments) "+
 523                                                 "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
 524                                                         [a.id, a.feed_id, a.title, a.link, a.guid, a.updated,
 525                                                                 a.content, a.unread, a.marked, a.tags, ts,
 526                                                                 a.comments]);
 527
 528                                         }
 529                                 }
 530
 531                                 if (articles_found > 0) {
 532                                         window.setTimeout("update_offline_data("+(stage+1)+")", 60*1000);
 533                                 } else {
 534                                         window.setTimeout("update_offline_data(0)", 1800*1000);
 535
 536                                         var date = new Date();
 537                                         var ts = Math.round(date.getTime() / 1000);
 538
 539                                         db.execute("DELETE FROM articles WHERE added < ? - 2592000", [ts]);
 540
 541                                 }
 542                         }
 543
 544                 }
 545         } catch (e) {
 546                 exception_error("offline_download_parse", e);
 547         }
 548 }
 549
 550 function update_offline_data(stage) {
 551         try {
 552
 553                 if (!stage) stage = 0;
 554                 if (offline_mode) return;
 555
 556                 debug("update_offline_data: stage " + stage);
 557
 558                 notify_progress("Updating offline data... (" + stage +")", true);
 559
 560                 var query = "backend.php?op=rpc&subop=download&stage=" + stage;
 561
 562                 var rs = db.execute("SELECT MAX(id), MIN(id) FROM articles");
 563
 564                 if (rs.isValidRow() && rs.field(0)) {
 565                         var offline_dl_max_id = rs.field(0);
 566                         var offline_dl_min_id = rs.field(1);
 567
 568                         query = query + "&cidt=" + offline_dl_max_id;
 569                         query = query + "&cidb=" + offline_dl_min_id;
 570                 }
 571
 572                 rs.close();
 573
 574                 new Ajax.Request(query, {
 575                         onComplete: function(transport) {
 576                                 offline_download_parse(stage, transport);
 577                                 debug("update_offline_data: done " + stage);
 578                         } });
 579
 580         } catch (e) {
 581                 exception_error("initiate_offline_download", e);
 582         }
 583 }
 584
 585 function set_feedlist_counter(id, ctr) {
 586         try {
 587
 588                 var feedctr = document.getElementById("FEEDCTR-" + id);
 589                 var feedu = document.getElementById("FEEDU-" + id);
 590                 var feedr = document.getElementById("FEEDR-" + id);
 591
 592                 if (feedctr && feedu && feedr) {
 593
 594                         var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 595
 596                         feedu.innerHTML = ctr;
 597
 598                         if (ctr > 0) {
 599                                 feedctr.className = "feedCtrHasUnread";
 600                                 if (!feedr.className.match("Unread")) {
 601                                         var is_selected = feedr.className.match("Selected");
 602
 603                                         feedr.className = feedr.className.replace("Selected", "");
 604                                         feedr.className = feedr.className.replace("Unread", "");
 605
 606                                         feedr.className = feedr.className + "Unread";
 607
 608                                         if (is_selected) {
 609                                                 feedr.className = feedr.className + "Selected";
 610                                         }
 611
 612                                 }
 613
 614                                 if (row_needs_hl) {
 615                                         new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 616                                                 queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 617                                 }
 618                         } else {
 619                                 feedctr.className = "feedCtrNoUnread";
 620                                 feedr.className = feedr.className.replace("Unread", "");
 621                         }
 622                 }
 623
 624         } catch (e) {
 625                 exception_error("set_feedlist_counter", e);
 626         }
 627 }
 628
 629 function update_local_feedlist_counters() {
 630         try {
 631                 if (!db) return;
 632
 633                 var rs = db.execute("SELECT feeds.id,COUNT(articles.id) "+
 634                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 635                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 636                         "ORDER BY feeds.title");
 637
 638                 while (rs.isValidRow()) {
 639                         var id = rs.field(0);
 640                         var ctr = rs.field(1);
 641
 642                         set_feedlist_counter(id, ctr);
 643
 644                         rs.next();
 645                 }
 646
 647                 rs.close();
 648
 649                 set_feedlist_counter(-4, get_local_feed_unread(-4));
 650                 set_feedlist_counter(-1, get_local_feed_unread(-1));
 651
 652                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 653
 654                 global_unread = get_local_feed_unread(-4);
 655                 updateTitle();
 656
 657         } catch (e) {
 658                 exception_error("update_local_feedlist_counters", e);
 659         }
 660 }
 661
 662 function get_local_feed_unread(id) {
 663         try {
 664                 var rs;
 665
 666                 if (id == -4) {
 667                         rs = db.execute("SELECT SUM(unread) FROM articles");
 668                 } else if (id == -1) {
 669                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE marked = 1");
 670                 } else {
 671                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE feed_id = ?", [id]);
 672                 }
 673
 674                 var a = false;
 675
 676                 if (rs.isValidRow()) {
 677                         a = rs.field(0);
 678                 } else {
 679                         a = 0;
 680                 }
 681
 682                 rs.close();
 683
 684                 return a;
 685
 686         } catch (e) {
 687                 exception_error("get_local_feed_unread", e);
 688         }
 689 }
 690
 691 function init_gears() {
 692         try {
 693
 694                 if (window.google && google.gears) {
 695                         localServer = google.gears.factory.create("beta.localserver");
 696                         store = localServer.createManagedStore("tt-rss");
 697                         db = google.gears.factory.create('beta.database');
 698                         db.open('tt-rss');
 699
 700                         db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
 701
 702                         var rs = db.execute("SELECT schema_version FROM version");
 703
 704                         var version = "";
 705
 706                         if (rs.isValidRow()) {
 707                                 version = rs.field(0);
 708                         }
 709
 710                         rs.close();
 711
 712                         if (version != SCHEMA_VERSION) {
 713                                 db.execute("DROP TABLE IF EXISTS init_params");
 714                                 db.execute("DROP TABLE IF EXISTS cache");
 715                                 db.execute("DROP TABLE IF EXISTS feeds");
 716                                 db.execute("DROP TABLE IF EXISTS articles");
 717                                 db.execute("DROP TABLE IF EXISTS version");
 718                                 db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
 719                                 db.execute("INSERT INTO version (schema_version) VALUES (?)",
 720                                         [SCHEMA_VERSION]);
 721                         }
 722
 723                         db.execute("CREATE TABLE IF NOT EXISTS init_params (key text, value text)");
 724
 725                         db.execute("CREATE TABLE IF NOT EXISTS cache (id text, article text, param text, added text)");
 726                         db.execute("CREATE TABLE IF NOT EXISTS feeds (id integer, title text, has_icon integer)");
 727                         db.execute("CREATE TABLE IF NOT EXISTS articles (id integer, feed_id integer, title text, link text, guid text, updated text, content text, tags text, unread text, marked text, added text, comments text)");
 728
 729
 730                         db.execute("DELETE FROM cache WHERE id LIKE 'F:%' OR id LIKE 'C:%'");
 731                 }
 732
 733                 cache_expire();
 734
 735         } catch (e) {
 736                 exception_error("init_gears", e);
 737         }
 738 }
 739
 740