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                 loading_set_progress(100);
  73
  74                 clean_feed_selections();
  75
  76                 setActiveFeedId(feed_id, is_cat);
  77
  78                 if (!is_cat) {
  79                         var feedr = document.getElementById("FEEDR-" + feed_id);
  80                         if (feedr && !feedr.className.match("Selected")) {
  81                                 feedr.className = feedr.className + "Selected";
  82                         }
  83                 } else {
  84                         var feedr = document.getElementById("FCAT-" + feed_id);
  85                         if (feedr && !feedr.className.match("Selected")) {
  86                                 feedr.className = feedr.className + "Selected";
  87                         }
  88                 }
  89
  90                 disableContainerChildren("headlinesToolbar", false);
  91                 Form.enable("main_toolbar_form");
  92
  93                 var f = document.getElementById("headlines-frame");
  94                 try {
  95                         if (reply.offset == 0) {
  96                                 debug("resetting headlines scrollTop");
  97                                 f.scrollTop = 0;
  98                         }
  99                 } catch (e) { };
 100
 101
 102                 var tmp = "";
 103
 104                 rs = db.execute("SELECT title FROM feeds WHERE id = ?", [feed_id]);
 105
 106                 if (rs.isValidRow() || feed_id == -1 || feed_id == -4) {
 107
 108                         feed_title = rs.field(0);
 109
 110                         if (feed_id == -1) {
 111                                 feed_title = __("Starred articles");
 112                         }
 113
 114                         if (feed_id == -4) {
 115                                 feed_title = __("All articles");
 116                         }
 117
 118                         if (offset == 0) {
 119                                 tmp += "<div id=\"headlinesContainer\">";
 120
 121                                 tmp += "<div class=\"headlinesSubToolbar\">";
 122                                 tmp += "<div id=\"subtoolbar_ftitle\">";
 123                                 tmp += feed_title;
 124                                 tmp += "</div>";
 125
 126                                 var sel_all_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, '', true)";
 127                                 var sel_unread_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true)";
 128                                 var sel_none_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false)";
 129                                 var sel_inv_link = "javascript:invertHeadlineSelection()";
 130
 131                                 tmp += __('Select:')+
 132                                         " <a href=\""+sel_all_link+"\">"+__('All')+"</a>, "+
 133                                         "<a href=\""+sel_unread_link+"\">"+__('Unread')+"</a>, "+
 134                                         "<a href=\""+sel_inv_link+"\">"+__('Invert')+"</a>, "+
 135                                         "<a href=\""+sel_none_link+"\">"+__('None')+"</a>";
 136
 137                                 tmp += "&nbsp;&nbsp;";
 138
 139                                 tmp += "</div>";
 140
 141                                 tmp += "<div id=\"headlinesInnerContainer\" onscroll=\"headlines_scroll_handler()\">";
 142
 143                                 tmp += "<table class=\"headlinesList\" id=\"headlinesList\" cellspacing=\"0\">";
 144
 145                         }
 146
 147                         var limit = 30;
 148
 149                         var toolbar_form = document.forms["main_toolbar_form"];
 150
 151                         var limit = toolbar_form.limit[toolbar_form.limit.selectedIndex].value;
 152                         var view_mode = toolbar_form.view_mode[toolbar_form.view_mode.selectedIndex].value;
 153
 154                         var limit_qpart = "";
 155                         var strategy_qpart = "";
 156                         var mode_qpart = "";
 157                         var offset_qpart = "";
 158
 159                         if (limit != 0) {
 160                                 limit_qpart = "LIMIT " + limit;
 161                         }
 162
 163                         if (view_mode == "all_articles") {
 164                                 mode_qpart = "1";
 165                         } else if (view_mode == "adaptive") {
 166                                 if (get_local_feed_unread(feed_id) > 0) {
 167                                         mode_qpart = "unread = 1";
 168                                 } else {
 169                                         mode_qpart = "1";
 170                                 }
 171                         } else if (view_mode == "marked") {
 172                                 mode_qpart = "marked = 1";
 173                         } else if (view_mode == "unread") {
 174                                 mode_qpart = "unread = 1";
 175                         } else {
 176                                 mode_qpart = "1";
 177                         }
 178
 179                         if (feed_id > 0) {
 180                                 strategy_qpart = "feed_id = " + feed_id;
 181                         } else if (feed_id == -1) {
 182                                 strategy_qpart = "marked = 1";
 183                         } else if (feed_id == -4) {
 184                                 strategy_qpart = "1";
 185                         }
 186
 187                         if (offset > 0) {
 188                                 offset_qpart = "OFFSET " + (offset*30);
 189                         } else {
 190                                 offset_qpart = "";
 191                         }
 192
 193                         var query = "SELECT * FROM articles WHERE " +
 194                                 strategy_qpart +
 195                                 " AND " + mode_qpart +
 196                                 " ORDER BY updated DESC "+
 197                                 limit_qpart + " " +
 198                                 offset_qpart;
 199
 200                         var rs = db.execute(query);
 201
 202                         var line_num = offset*30;
 203
 204                         while (rs.isValidRow()) {
 205
 206                                 var id = rs.fieldByName("id");
 207                                 var feed_id = rs.fieldByName("feed_id");
 208
 209                                 var marked_pic;
 210
 211                                 var row_class = (line_num % 2) ? "even" : "odd";
 212
 213                                 if (rs.fieldByName("unread") == "1") {
 214                                         row_class += "Unread";
 215                                 }
 216
 217                                 if (rs.fieldByName("marked") == "1") {
 218                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 219                                                 "src=\"images/mark_set.png\" class=\"markedPic\""+
 220                                                 "alt=\"Unstar article\" onclick='javascript:tMark("+id+")'>";
 221                                 } else {
 222                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 223                                                 "src=\"images/mark_unset.png\" class=\"markedPic\""+
 224                                                 "alt=\"Star article\" onclick='javascript:tMark("+id+")'>";
 225                                 }
 226
 227                                 var mouseover_attrs = "onmouseover='postMouseIn($id)' "+
 228                                         "onmouseout='postMouseOut($id)'";
 229
 230                                 tmp += "<tr class='"+row_class+"' id='RROW-"+id+"' "+mouseover_attrs+">";
 231
 232                                 tmp += "<td class='hlUpdPic'> </td>";
 233
 234                                 tmp += "<td class='hlSelectRow'>"+
 235                                         "<input type=\"checkbox\" onclick=\"tSR(this)\" id=\"RCHK-"+id+"\"></td>";
 236
 237                                 tmp += "<td class='hlMarkedPic'>"+marked_pic+"</td>";
 238
 239                                 tmp += "<td onclick='view("+id+","+feed_id+")' "+
 240                                         "class='hlContent' valign='middle'>";
 241
 242                                 tmp += "<a target=\"_blank\" id=\"RTITLE-$id\" href=\"" +
 243                                         rs.fieldByName("link") + "\"" +
 244                                         "onclick=\"return view("+id+","+feed_id+");\">"+
 245                                         rs.fieldByName("title");
 246
 247                                 var content_preview = truncate_string(strip_tags(rs.fieldByName("content")),
 248                                         100);
 249
 250                                 tmp += "<span class=\"contentPreview\"> - "+content_preview+"</span>";
 251
 252                                 tmp += "</a>";
 253
 254                                 tmp += "</td>";
 255
 256                                 tmp += "<td class=\"hlUpdated\" onclick='view("+id+","+feed_id+")'>"+
 257                                         "<nobr>"+rs.fieldByName("updated").substring(0,16)+"</nobr></td>";
 258
 259                                 tmp += "</tr>";
 260
 261                                 rs.next();
 262                                 line_num++;
 263                         }
 264
 265                         rs.close();
 266
 267                         if (offset == 0) {
 268                                 tmp += "</table>";
 269                                 tmp += "</div></div>";
 270                         }
 271
 272                         if (offset == 0) {
 273                                 var container = document.getElementById("headlines-frame");
 274                                 container.innerHTML = tmp;
 275                         } else {
 276                                 var ids = getSelectedArticleIds2();
 277
 278                                 var container = document.getElementById("headlinesList");
 279                                 container.innerHTML = container.innerHTML + tmp;
 280
 281                                 for (var i = 0; i < ids.length; i++) {
 282                                         markHeadline(ids[i]);
 283                                 }
 284                         }
 285                 }
 286
 287                 remove_splash();
 288
 289
 290         } catch (e) {
 291                 exception_error("viewfeed_offline", e);
 292         }
 293 }
 294
 295 function render_offline_feedlist() {
 296         try {
 297                 var tmp = "<ul class=\"feedList\" id=\"feedList\">";
 298
 299                 var unread = get_local_feed_unread(-4);
 300
 301                 global_unread = unread;
 302                 updateTitle();
 303
 304                 tmp += printFeedEntry(-4, __("All articles"), "feed", unread,
 305                         "images/tag.png");
 306
 307                 var unread = get_local_feed_unread(-1);
 308
 309                 tmp += printFeedEntry(-1, __("Starred articles"), "feed", unread,
 310                         "images/mark_set.png");
 311
 312                 tmp += "<li><hr/></li>";
 313
 314                 var rs = db.execute("SELECT feeds.id,feeds.title,has_icon,COUNT(articles.id) "+
 315                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 316                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 317                         "ORDER BY feeds.title");
 318
 319                 while (rs.isValidRow()) {
 320
 321                         var id = rs.field(0);
 322                         var title = rs.field(1);
 323                         var has_icon = rs.field(2);
 324                         var unread = rs.field(3);
 325
 326                         var icon = "";
 327
 328                         if (has_icon) {
 329                                 icon = "icons/" + id + ".ico";
 330                         }
 331
 332
 333                         var feed_icon = "";
 334
 335                         var row_class = "feed";
 336
 337                         if (unread > 0) {
 338                                 row_class += "Unread";
 339                                 fctr_class = "feedCtrHasUnread";
 340                         } else {
 341                                 fctr_class = "feedCtrNoUnread";
 342                         }
 343
 344                         tmp += printFeedEntry(id, title, "feed", unread, icon);
 345
 346                         rs.next();
 347                 }
 348
 349                 rs.close();
 350
 351                 tmp += "</ul>";
 352
 353                 render_feedlist(tmp);
 354         } catch (e) {
 355                 exception_error("render_offline_feedlist", e);
 356         }
 357 }
 358
 359 function init_offline() {
 360         try {
 361                 offline_mode = true;
 362
 363                 Element.hide("dispSwitchPrompt");
 364                 Element.hide("feedBrowserPrompt");
 365                 Element.hide("quickMenuChooser");
 366
 367                 var tb_form = document.getElementById("main_toolbar_form");
 368
 369                 Element.hide(tb_form.update);
 370
 371                 var rs = db.execute("SELECT key, value FROM init_params");
 372
 373                 while (rs.isValidRow()) {
 374                         init_params[rs.field(0)] = rs.field(1);
 375                         rs.next();
 376                 }
 377
 378                 rs.close();
 379
 380                 render_offline_feedlist();
 381                 init_second_stage();
 382                 remove_splash();
 383         } catch (e) {
 384                 exception_error("init_offline", e);
 385         }
 386 }
 387
 388 function offline_download_parse(stage, transport) {
 389         try {
 390                 if (transport.responseXML) {
 391
 392                         if (stage == 0) {
 393
 394                                 var feeds = transport.responseXML.getElementsByTagName("feed");
 395
 396                                 if (feeds.length > 0) {
 397                                         db.execute("DELETE FROM feeds");
 398                                 }
 399
 400                                 for (var i = 0; i < feeds.length; i++) {
 401                                         var id = feeds[i].getAttribute("id");
 402                                         var has_icon = feeds[i].getAttribute("has_icon");
 403                                         var title = feeds[i].firstChild.nodeValue;
 404
 405                                         db.execute("INSERT INTO feeds (id,title,has_icon)"+
 406                                                 "VALUES (?,?,?)",
 407                                                 [id, title, has_icon]);
 408                                 }
 409
 410                                 window.setTimeout("update_offline_data("+(stage+1)+")", 60*1000);
 411                         } else {
 412
 413                                 var articles = transport.responseXML.getElementsByTagName("article");
 414
 415                                 var articles_found = 0;
 416
 417                                 for (var i = 0; i < articles.length; i++) {
 418                                         var a = eval("("+articles[i].firstChild.nodeValue+")");
 419                                         articles_found++;
 420                                         if (a) {
 421
 422                                                 var date = new Date();
 423                                                 var ts = Math.round(date.getTime() / 1000);
 424
 425                                                 db.execute("DELETE FROM articles WHERE id = ?", [a.id]);
 426                                                 db.execute("INSERT INTO articles "+
 427                                                 "(id, feed_id, title, link, guid, updated, content, "+
 428                                                         "unread, marked, tags, added, comments) "+
 429                                                 "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
 430                                                         [a.id, a.feed_id, a.title, a.link, a.guid, a.updated,
 431                                                                 a.content, a.unread, a.marked, a.tags, ts,
 432                                                                 a.comments]);
 433
 434                                         }
 435                                 }
 436
 437                                 if (articles_found > 0) {
 438                                         window.setTimeout("update_offline_data("+(stage+1)+")", 60*1000);
 439                                 } else {
 440                                         window.setTimeout("update_offline_data(0)", 1800*1000);
 441
 442                                         var date = new Date();
 443                                         var ts = Math.round(date.getTime() / 1000);
 444
 445                                         db.execute("DELETE FROM articles WHERE added < ? - 2592000", [ts]);
 446
 447                                 }
 448                         }
 449
 450                 }
 451         } catch (e) {
 452                 exception_error("offline_download_parse", e);
 453         }
 454 }
 455
 456 function update_offline_data(stage) {
 457         try {
 458
 459                 if (!stage) stage = 0;
 460
 461                 debug("update_offline_data: stage " + stage);
 462
 463 //              notify_progress("Loading, please wait... (" + stage +")", true);
 464
 465                 var query = "backend.php?op=rpc&subop=download&stage=" + stage;
 466
 467                 var rs = db.execute("SELECT MAX(id), MIN(id) FROM articles");
 468
 469                 if (rs.isValidRow() && rs.field(0)) {
 470                         var offline_dl_max_id = rs.field(0);
 471                         var offline_dl_min_id = rs.field(1);
 472
 473                         query = query + "&cidt=" + offline_dl_max_id;
 474                         query = query + "&cidb=" + offline_dl_min_id;
 475                 }
 476
 477                 rs.close();
 478
 479                 new Ajax.Request(query, {
 480                         onComplete: function(transport) {
 481                                 offline_download_parse(stage, transport);
 482                                 debug("update_offline_data: done " + stage);
 483                         } });
 484
 485         } catch (e) {
 486                 exception_error("initiate_offline_download", e);
 487         }
 488 }
 489
 490 function set_feedlist_counter(id, ctr) {
 491         try {
 492
 493                 var feedctr = document.getElementById("FEEDCTR-" + id);
 494                 var feedu = document.getElementById("FEEDU-" + id);
 495                 var feedr = document.getElementById("FEEDR-" + id);
 496
 497                 if (feedctr && feedu && feedr) {
 498
 499                         var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 500
 501                         feedu.innerHTML = ctr;
 502
 503                         if (ctr > 0) {
 504                                 feedctr.className = "feedCtrHasUnread";
 505                                 if (!feedr.className.match("Unread")) {
 506                                         var is_selected = feedr.className.match("Selected");
 507
 508                                         feedr.className = feedr.className.replace("Selected", "");
 509                                         feedr.className = feedr.className.replace("Unread", "");
 510
 511                                         feedr.className = feedr.className + "Unread";
 512
 513                                         if (is_selected) {
 514                                                 feedr.className = feedr.className + "Selected";
 515                                         }
 516
 517                                 }
 518
 519                                 if (row_needs_hl) {
 520                                         new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 521                                                 queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 522                                 }
 523                         } else {
 524                                 feedctr.className = "feedCtrNoUnread";
 525                                 feedr.className = feedr.className.replace("Unread", "");
 526                         }
 527                 }
 528
 529         } catch (e) {
 530                 exception_error("set_feedlist_counter", e);
 531         }
 532 }
 533
 534 function update_local_feedlist_counters() {
 535         try {
 536                 if (!db) return;
 537
 538                 var rs = db.execute("SELECT feeds.id,COUNT(articles.id) "+
 539                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 540                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 541                         "ORDER BY feeds.title");
 542
 543                 while (rs.isValidRow()) {
 544                         var id = rs.field(0);
 545                         var ctr = rs.field(1);
 546
 547                         set_feedlist_counter(id, ctr);
 548
 549                         rs.next();
 550                 }
 551
 552                 rs.close();
 553
 554                 set_feedlist_counter(-4, get_local_feed_unread(-4));
 555                 set_feedlist_counter(-1, get_local_feed_unread(-1));
 556
 557                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 558
 559                 global_unread = get_local_feed_unread(-4);
 560                 updateTitle();
 561
 562         } catch (e) {
 563                 exception_error("update_local_feedlist_counters", e);
 564         }
 565 }
 566
 567 function get_local_feed_unread(id) {
 568         try {
 569                 var rs;
 570
 571                 if (id == -4) {
 572                         rs = db.execute("SELECT SUM(unread) FROM articles");
 573                 } else if (id == -1) {
 574                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE marked = 1");
 575                 } else {
 576                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE feed_id = ?", [id]);
 577                 }
 578
 579                 var a = false;
 580
 581                 if (rs.isValidRow()) {
 582                         a = rs.field(0);
 583                 } else {
 584                         a = 0;
 585                 }
 586
 587                 rs.close();
 588
 589                 return a;
 590
 591         } catch (e) {
 592                 exception_error("get_local_feed_unread", e);
 593         }
 594 }
 595
 596 function init_gears() {
 597         try {
 598
 599                 if (window.google && google.gears) {
 600                         localServer = google.gears.factory.create("beta.localserver");
 601                         store = localServer.createManagedStore("tt-rss");
 602                         db = google.gears.factory.create('beta.database');
 603                         db.open('tt-rss');
 604
 605                         db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
 606
 607                         var rs = db.execute("SELECT schema_version FROM version");
 608
 609                         var version = "";
 610
 611                         if (rs.isValidRow()) {
 612                                 version = rs.field(0);
 613                         }
 614
 615                         rs.close();
 616
 617                         if (version != SCHEMA_VERSION) {
 618                                 db.execute("DROP TABLE IF EXISTS init_params");
 619                                 db.execute("DROP TABLE IF EXISTS cache");
 620                                 db.execute("DROP TABLE IF EXISTS feeds");
 621                                 db.execute("DROP TABLE IF EXISTS articles");
 622                                 db.execute("DROP TABLE IF EXISTS version");
 623                                 db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
 624                                 db.execute("INSERT INTO version (schema_version) VALUES (?)",
 625                                         [SCHEMA_VERSION]);
 626                         }
 627
 628                         db.execute("CREATE TABLE IF NOT EXISTS init_params (key text, value text)");
 629
 630                         db.execute("CREATE TABLE IF NOT EXISTS cache (id text, article text, param text, added text)");
 631                         db.execute("CREATE TABLE IF NOT EXISTS feeds (id integer, title text, has_icon integer)");
 632                         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)");
 633                         window.setTimeout("update_offline_data(0)", 100);
 634
 635                 }
 636
 637                 cache_expire();
 638
 639         } catch (e) {
 640                 exception_error("init_gears", e);
 641         }
 642 }
 643
 644