digest.js

   1 var last_feeds = [];
   2
   3 var _active_feed_id = false;
   4 var _active_feed_offset = false;
   5 var _update_timeout = false;
   6 var _view_update_timeout = false;
   7 var _feedlist_expanded = false;
   8 var _update_seq = 1;
   9
  10 function article_appear(article_id) {
  11         try {
  12                 new Effect.Appear('A-' + article_id);
  13         } catch (e) {
  14                 exception_error("article_appear", e);
  15         }
  16 }
  17
  18 function catchup_feed(feed_id, callback) {
  19         try {
  20
  21                 var fn = find_feed(last_feeds, feed_id).title;
  22
  23                 if (confirm(__("Mark all articles in %s as read?").replace("%s", fn))) {
  24
  25                         var is_cat = "";
  26
  27                         if (feed_id < 0) is_cat = "true"; // KLUDGE
  28
  29                         var query = "?op=rpc&subop=catchupFeed&feed_id=" +
  30                                 feed_id + "&is_cat=" + is_cat;
  31
  32                         new Ajax.Request("backend.php", {
  33                                 parameters: query,
  34                                 onComplete: function(transport) {
  35                                         if (callback) callback(transport);
  36
  37                                         update();
  38                                 } });
  39                 }
  40
  41         } catch (e) {
  42                 exception_error("catchup_article", e);
  43         }
  44 }
  45
  46 function catchup_visible_articles(callback) {
  47         try {
  48
  49                 var elems = $("headlines-content").getElementsByTagName("LI");
  50                 var ids = [];
  51
  52                 for (var i = 0; i < elems.length; i++) {
  53                         if (elems[i].id && elems[i].id.match("A-")) {
  54                         ids.push(elems[i].id.replace("A-", ""));
  55                         }
  56                 }
  57
  58                 if (confirm(__("Mark %d displayed articles as read?").replace("%d", ids.length))) {
  59
  60                         var query = "?op=rpc&subop=catchupSelected" +
  61                                 "&cmode=0&ids=" + param_escape(ids);
  62
  63                         new Ajax.Request("backend.php", {
  64                                 parameters: query,
  65                                 onComplete: function(transport) {
  66                                         if (callback) callback(transport);
  67
  68                                         viewfeed(_active_feed_id, 0);
  69                                 } });
  70
  71                         }
  72
  73         } catch (e) {
  74                 exception_error("catchup_visible_articles", e);
  75         }
  76 }
  77
  78 function catchup_article(article_id, callback) {
  79         try {
  80                 var query = "?op=rpc&subop=catchupSelected" +
  81                         "&cmode=0&ids=" + article_id;
  82
  83                 new Ajax.Request("backend.php", {
  84                         parameters: query,
  85                         onComplete: function(transport) {
  86                                 if (callback) callback(transport);
  87                         } });
  88
  89         } catch (e) {
  90                 exception_error("catchup_article", e);
  91         }
  92 }
  93
  94 function set_selected_feed(feed_id) {
  95         try {
  96                 var feeds = $("feeds-content").getElementsByTagName("LI");
  97
  98                 for (var i = 0; i < feeds.length; i++) {
  99                         if (feeds[i].id == "F-" + feed_id)
 100                                 feeds[i].className = "selected";
 101                         else
 102                                 feeds[i].className = "";
 103                 }
 104
 105                 _active_feed_id = feed_id;
 106
 107         } catch (e) {
 108                 exception_error("mark_selected_feed", e);
 109         }
 110 }
 111
 112 function zoom(elem, article_id) {
 113         try {
 114                 //alert(elem + "/" + article_id);
 115
 116                 elem.innerHTML = "<img src='images/indicator_tiny.gif'> " +
 117                         __("Loading, please wait...");
 118
 119                 new Ajax.Request("backend.php", {
 120                         parameters: "?op=rpc&subop=digest-get-contents&article_id=" +
 121                                 article_id,
 122                         onComplete: function(transport) {
 123                                 fatal_error_check(transport);
 124
 125                                 if (transport.responseXML) {
 126                                         var article = transport.responseXML.getElementsByTagName('article')[0];
 127                                         elem.innerHTML = article.firstChild.nodeValue;
 128
 129                                         new Effect.BlindDown(elem, {duration : 0.5});
 130
 131                                         elem.onclick = false;
 132                                         elem.style.cursor = "auto";
 133
 134                                         catchup_article(article_id,
 135                                                 function() {
 136                                                         window.clearTimeout(_view_update_timeout);
 137                                                         _view_update_timeout = window.setTimeout("view_update()", 500);
 138                                                         $("A-" + article_id).className = "read";
 139                                         });
 140
 141
 142                                 } else {
 143                                         elem.innerHTML = __("Error: unable to load article.");
 144                                 }
 145
 146                                 } });
 147
 148
 149         } catch (e) {
 150                 exception_error("zoom", e);
 151         }
 152 }
 153
 154 function load_more() {
 155         try {
 156                 var pr = $("H-LOADING-IMG");
 157
 158                 if (pr) Element.show(pr);
 159
 160                 viewfeed(_active_feed_id, _active_feed_offset + 10, false, false, true,
 161                         function() {
 162                                 var pr = $("H-LOADING-IMG");
 163
 164                                 if (pr) Element.hide(pr);
 165                         });
 166         } catch (e) {
 167                 exception_error("load_more", e);
 168         }
 169 }
 170
 171 function update(callback) {
 172         try {
 173                 console.log('updating feeds...');
 174
 175                 window.clearTimeout(_update_timeout);
 176
 177                 new Ajax.Request("backend.php", {
 178                         parameters: "?op=rpc&subop=digest-init",
 179                         onComplete: function(transport) {
 180                                 fatal_error_check(transport);
 181                                 parse_feeds(transport);
 182                                 set_selected_feed(_active_feed_id);
 183
 184                                 if (callback) callback(transport);
 185                                 } });
 186
 187                 _update_timeout = window.setTimeout('update()', 5*1000);
 188         } catch (e) {
 189                 exception_error("update", e);
 190         }
 191 }
 192
 193 function remove_headline_entry(article_id) {
 194         try {
 195                 var elem = $('A-' + article_id);
 196
 197                 if (elem) {
 198                         elem.parentNode.removeChild(elem);
 199                 }
 200
 201         } catch (e) {
 202                 exception_error("remove_headline_entry", e);
 203         }
 204 }
 205
 206 function view_update() {
 207         try {
 208                 viewfeed(_active_feed_id, _active_feed_offset, false, true, true);
 209                 update();
 210         } catch (e) {
 211                 exception_error("view_update", e);
 212         }
 213 }
 214
 215 function view(article_id, dismiss_only) {
 216         try {
 217                 remove_headline_entry(article_id);
 218
 219                 catchup_article(article_id,
 220                         function() {
 221                                 window.clearTimeout(_view_update_timeout);
 222                                 _view_update_timeout = window.setTimeout("view_update()", 500);
 223                         });
 224
 225                 return dismiss_only != true;
 226         } catch (e) {
 227                 exception_error("view", e);
 228         }
 229 }
 230
 231 function viewfeed(feed_id, offset, replace, no_effects, no_indicator, callback) {
 232         try {
 233
 234                 if (!feed_id) feed_id = _active_feed_id;
 235
 236                 if (!offset) {
 237                         offset = 0;
 238                 } else {
 239                         offset = _active_feed_offset + offset;
 240                 }
 241
 242                 if (replace == undefined) replace = (offset == 0);
 243
 244                 _update_seq = _update_seq + 1;
 245
 246                 var query = "backend.php?op=rpc&subop=digest-update&feed_id=" +
 247                                 param_escape(feed_id) + "&offset=" + offset +
 248                                 "&seq=" + _update_seq;
 249
 250                 console.log(query);
 251
 252                 var img = $("F-" + feed_id).getElementsByTagName("IMG")[0];
 253
 254                 if (img && !no_indicator) {
 255                         img.setAttribute("orig_src", img.src);
 256                         img.src = 'images/indicator_tiny.gif';
 257                 }
 258
 259                 new Ajax.Request("backend.php", {
 260                         parameters: query,
 261                         onComplete: function(transport) {
 262                                 fatal_error_check(transport);
 263                                 parse_headlines(transport, replace, no_effects);
 264                                 set_selected_feed(feed_id);
 265                                 _active_feed_offset = offset;
 266
 267                                 if (img && !no_indicator)
 268                                         img.src = img.getAttribute("orig_src");
 269
 270                                 if (callback) callback(transport);
 271
 272                         } });
 273
 274         } catch (e) {
 275                 exception_error("view", e);
 276         }
 277 }
 278
 279 function find_article(articles, article_id) {
 280         try {
 281                 for (var i = 0; i < articles.length; i++) {
 282                         if (articles[i].id == article_id)
 283                                 return articles[i];
 284                 }
 285
 286                 return false;
 287
 288         } catch (e) {
 289                 exception_error("find_article", e);
 290         }
 291 }
 292
 293 function find_feed(feeds, feed_id) {
 294         try {
 295                 for (var i = 0; i < feeds.length; i++) {
 296                         if (feeds[i].id == feed_id)
 297                                 return feeds[i];
 298                 }
 299
 300                 return false;
 301
 302         } catch (e) {
 303                 exception_error("find_feed", e);
 304         }
 305 }
 306
 307 function get_feed_icon(feed) {
 308         try {
 309                 if (feed.has_icon)
 310                         return 'icons/' + feed.id + '.ico';
 311
 312                 if (feed.id == -1)
 313                         return 'images/mark_set.png';
 314
 315                 if (feed.id == -2)
 316                         return 'images/pub_set.png';
 317
 318                 if (feed.id == -3)
 319                         return 'images/fresh.png';
 320
 321                 if (feed.id == -4)
 322                         return 'images/tag.png';
 323
 324                 if (feed.id < -10)
 325                         return 'images/label.png';
 326
 327                 return 'images/blank_icon.gif';
 328
 329         } catch (e) {
 330                 exception_error("get_feed_icon", e);
 331         }
 332 }
 333
 334 function add_feed_entry(feed) {
 335         try {
 336                 var icon_part = "";
 337
 338                 icon_part = "<img src='" + get_feed_icon(feed) + "'/>";
 339
 340                 var tmp_html = "<li id=\"F-"+feed.id+"\" " +
 341                                 "onmouseover=\"feed_mi(this)\" onmouseout=\"feed_mo(this)\">" +
 342                         icon_part +
 343                         "<a href=\"#\" onclick=\"viewfeed("+feed.id+")\">" + feed.title + "</a>" +
 344                         "<div class='unread-ctr'>" +
 345                                 "<img onclick=\"catchup_feed("+feed.id+")\" title=\"" +
 346                                         __("Mark as read") +
 347                                         "\" class=\"dismiss\" style='display : none' src=\"images/digest_checkbox.png\">" +
 348                                 "<span class=\"unread\">" + feed.unread + "</span>" +
 349                         "</div>" +
 350                         "</li>";
 351
 352                 $("feeds-content").innerHTML += tmp_html;
 353
 354         } catch (e) {
 355                 exception_error("add_feed_entry", e);
 356         }
 357 }
 358
 359 function add_headline_entry(article, feed, no_effects) {
 360         try {
 361
 362                 var icon_part = "";
 363
 364                 icon_part = "<img class='icon' src='" + get_feed_icon(feed) + "'/>";
 365
 366                 var mark_part = "";
 367                 var publ_part = "";
 368
 369                 var tags_part = "";
 370
 371                 if (article.tags.length > 0) {
 372
 373                         tags_part = " " + __("in") + " ";
 374
 375                         for (var i = 0; i < Math.min(5, article.tags.length); i++) {
 376                                 tags_part += "<a href=\"#\" onclick=\"viewfeed('" +
 377                                                 article.tags[i] + "')\">" +
 378                                         article.tags[i] + "</a>, ";
 379                         }
 380
 381                         tags_part = tags_part.replace(/, $/, "");
 382                         tags_part = "<span class=\"tags\">" + tags_part + "</span>";
 383                 }
 384
 385                 if (article.marked)
 386                         mark_part = "<img title='"+ __("Unstar article")+"' onclick=\"toggle_mark(this, "+article.id+")\" src='images/mark_set.png'>";
 387                 else
 388                         mark_part =     "<img title='"+__("Star article")+"' onclick=\"toggle_mark(this, "+article.id+")\" src='images/mark_unset.png'>";
 389
 390                 if (article.published)
 391                         publ_part = "<img title='"+__("Unpublish article")+"' onclick=\"toggle_pub(this, "+article.id+")\" src='images/pub_set.png'>";
 392                 else
 393                         publ_part =     "<img title='"+__("Publish article")+"' onclick=\"toggle_pub(this, "+article.id+")\" src='images/pub_unset.png'>";
 394
 395                 var style = "";
 396
 397                 if (!no_effects) style = "style=\"display : none\"";
 398
 399                 if (article.excerpt.trim() == "")
 400                         article.excerpt = __("Click to expand article.");
 401
 402                 var tmp_html = "<li id=\"A-"+article.id+"\" "+style+" class=\"unread\">" +
 403                         icon_part +
 404
 405                         "<div class='digest-check'>" +
 406                                 mark_part +
 407                                 publ_part +
 408                                 "<img title='" + __("Mark as read") + "' onclick=\"view("+article.id+", true)\" src='images/digest_checkbox.png'>" +
 409                         "</div>" +
 410                         "<a target=\"_blank\" href=\""+article.link+"\""+
 411                                 "onclick=\"return view("+article.id+")\" class='title'>" +
 412                                 article.title + "</a>" +
 413                         "<div class='body'>" +
 414                         "<div title=\""+__("Click to expand article")+"\" onclick=\"zoom(this, "+article.id+")\" class='excerpt'>" +
 415                                 article.excerpt + "</div>" +
 416                         "<div class='info'><a href=\#\" onclick=\"viewfeed("+feed.id+")\">" +
 417                                 feed.title + "</a> " + tags_part + " @ " +
 418                                 new Date(article.updated * 1000) + "</div>" +
 419                         "</div></li>";
 420
 421                 $("headlines-content").innerHTML += tmp_html;
 422
 423                 if (!no_effects)
 424                         window.setTimeout('article_appear(' + article.id + ')', 100);
 425
 426         } catch (e) {
 427                 exception_error("add_headline_entry", e);
 428         }
 429 }
 430
 431 function expand_feeds() {
 432         try {
 433                 _feedlist_expanded = true;
 434
 435                 redraw_feedlist(last_feeds);
 436
 437         } catch (e) {
 438                 exception_error("expand_feeds", e);
 439         }
 440 }
 441
 442 function redraw_feedlist(feeds) {
 443         try {
 444
 445                 $('feeds-content').innerHTML = "";
 446
 447                 var limit = 10;
 448
 449                 if (_feedlist_expanded) limit = feeds.length;
 450
 451                 for (var i = 0; i < Math.min(limit, feeds.length); i++) {
 452                         add_feed_entry(feeds[i]);
 453                 }
 454
 455                 if (feeds.length > limit) {
 456                         $('feeds-content').innerHTML += "<li id='F-MORE-PROMPT'>" +
 457                                 "<img src='images/blank_icon.gif'>" +
 458                                 "<a href=\"#\" onclick=\"expand_feeds()\">" +
 459                                 __("%d more...").replace("%d", feeds.length-10) +
 460                                 "</a>" + "</li>";
 461                 }
 462
 463         } catch (e) {
 464                 exception_error("redraw_feedlist", e);
 465         }
 466 }
 467
 468 function parse_feeds(transport) {
 469         try {
 470
 471                 if (!transport.responseXML) return;
 472
 473                 var feeds = transport.responseXML.getElementsByTagName('feeds')[0];
 474
 475                 if (feeds) {
 476                         feeds = eval("(" + feeds.firstChild.nodeValue + ")");
 477
 478                         feeds.sort( function (a,b)
 479                                 {
 480                                         if (b.unread != a.unread)
 481                                                 return (b.unread - a.unread)
 482                                         else
 483                                                 if (a.title > b.title)
 484                                                         return 1;
 485                                                 else if (a.title < b.title)
 486                                                         return -1;
 487                                                 else
 488                                                         return 0;
 489                                 });
 490
 491                         var all_articles = find_feed(feeds, -4);
 492
 493                         update_title(all_articles.unread);
 494
 495                         last_feeds = feeds;
 496
 497                         redraw_feedlist(feeds);
 498                 }
 499
 500         } catch (e) {
 501                 exception_error("parse_feeds", e);
 502         }
 503 }
 504
 505 function parse_headlines(transport, replace, no_effects) {
 506         try {
 507                 if (!transport.responseXML) return;
 508
 509                 var seq = transport.responseXML.getElementsByTagName('seq')[0];
 510
 511                 if (seq) {
 512                         seq = seq.firstChild.nodeValue;
 513                         if (seq != _update_seq) {
 514                                 console.log("parse_headlines: wrong sequence received.");
 515                                 return;
 516                         }
 517                 } else {
 518                         return;
 519                 }
 520
 521                 var headlines = transport.responseXML.getElementsByTagName('headlines')[0];
 522                 var headlines_title = transport.responseXML.getElementsByTagName('headlines-title')[0];
 523
 524                 if (headlines && headlines_title) {
 525                         headlines = eval("(" + headlines.firstChild.nodeValue + ")");
 526
 527                         var title = headlines_title.firstChild.nodeValue;
 528
 529                         $("headlines-title").innerHTML = title;
 530
 531                         if (replace) {
 532                                 $('headlines-content').innerHTML = '';
 533                                 Element.hide('headlines-content');
 534                         }
 535
 536                         var pr = $('H-MORE-PROMPT');
 537
 538                         if (pr) pr.parentNode.removeChild(pr);
 539
 540                         var inserted = false;
 541
 542                         for (var i = 0; i < headlines.length; i++) {
 543
 544                                 if (!$('A-' + headlines[i].id)) {
 545                                         add_headline_entry(headlines[i],
 546                                                         find_feed(last_feeds, headlines[i].feed_id), !no_effects);
 547
 548                                         inserted = $("A-" + headlines[i].id);
 549                                 }
 550                         }
 551
 552                         if (pr) {
 553                                 $('headlines-content').appendChild(pr);
 554                                 if (!no_effects) new Effect.ScrollTo(inserted);
 555                         } else {
 556                                 $('headlines-content').innerHTML += "<li id='H-MORE-PROMPT'>" +
 557                                         "<div class='body'>" +
 558                                         "<a href=\"javascript:catchup_visible_articles()\">" +
 559                                         __("Mark as read") + "</a> | " +
 560                                         "<a href=\"javascript:load_more()\">" +
 561                                         __("Load more...") + "</a>" +
 562                                         "<img style=\"display : none\" "+
 563                                                 "id=\"H-LOADING-IMG\" src='images/indicator_tiny.gif'>" +
 564                                         "</div></li>";
 565                         }
 566
 567                         if (replace && !no_effects)
 568                                 new Effect.Appear('headlines-content', {duration : 0.3});
 569
 570                         //new Effect.Appear('headlines-content');
 571                 }
 572
 573         } catch (e) {
 574                 exception_error("parse_headlines", e);
 575         }
 576 }
 577
 578 function init() {
 579         try {
 580
 581                 new Ajax.Request("backend.php", {
 582                         parameters: "backend.php?op=rpc&subop=digest-init",
 583                         onComplete: function(transport) {
 584                                 parse_feeds(transport);
 585                                 window.setTimeout('viewfeed(-4)', 100);
 586                                 _update_timeout = window.setTimeout('update()', 5*1000);
 587                                 } });
 588
 589         } catch (e) {
 590                 exception_error("digest_init", e);
 591         }
 592 }
 593
 594 function toggle_mark(mark_img, id) {
 595
 596         try {
 597
 598                 var query = "?op=rpc&id=" + id + "&subop=mark";
 599
 600                 query = query + "&afid=" + _active_feed_id;
 601                 query = query + "&omode=c";
 602
 603                 if (!mark_img) return;
 604
 605                 if (mark_img.src.match("mark_unset")) {
 606                         mark_img.src = mark_img.src.replace("mark_unset", "mark_set");
 607                         mark_img.alt = __("Unstar article");
 608                         query = query + "&mark=1";
 609                 } else {
 610                         mark_img.alt = __("Please wait...");
 611                         query = query + "&mark=0";
 612
 613                         mark_img.src = mark_img.src.replace("mark_set", "mark_unset");
 614                         mark_img.alt = __("Star article");
 615                 }
 616
 617                 new Ajax.Request("backend.php", {
 618                         parameters: query,
 619                         onComplete: function(transport) {
 620                                 update();
 621                         } });
 622
 623         } catch (e) {
 624                 exception_error("toggle_mark", e);
 625         }
 626 }
 627
 628 function toggle_pub(mark_img, id, note) {
 629
 630         try {
 631
 632                 var query = "?op=rpc&id=" + id + "&subop=publ";
 633
 634                 query = query + "&afid=" + _active_feed_id;
 635
 636                 if (note != undefined) {
 637                         query = query + "&note=" + param_escape(note);
 638                 } else {
 639                         query = query + "&note=undefined";
 640                 }
 641
 642                 query = query + "&omode=c";
 643
 644                 if (!mark_img) return;
 645
 646                 if (mark_img.src.match("pub_unset") || note != undefined) {
 647                         mark_img.src = mark_img.src.replace("pub_unset", "pub_set");
 648                         mark_img.alt = __("Unpublish article");
 649                         query = query + "&pub=1";
 650
 651                 } else {
 652                         mark_img.alt = __("Please wait...");
 653                         query = query + "&pub=0";
 654
 655                         mark_img.src = mark_img.src.replace("pub_set", "pub_unset");
 656                         mark_img.alt = __("Publish article");
 657                 }
 658
 659                 new Ajax.Request("backend.php", {
 660                         parameters: query,
 661                         onComplete: function(transport) {
 662                                 update();
 663                         } });
 664
 665         } catch (e) {
 666                 exception_error("toggle_pub", e);
 667         }
 668 }
 669
 670 function fatal_error(code, msg) {
 671         try {
 672
 673                 if (code == 6) {
 674                         window.location.href = "digest.php";
 675                 } else if (code == 5) {
 676                         window.location.href = "update.php";
 677                 } else {
 678
 679                         if (msg == "") msg = "Unknown error";
 680
 681                         console.error("Fatal error: " + code + "\n" +
 682                                 msg);
 683
 684                 }
 685
 686         } catch (e) {
 687                 exception_error("fatalError", e);
 688         }
 689 }
 690
 691 function fatal_error_check(transport) {
 692         try {
 693                 if (transport.responseXML) {
 694                         var error = transport.responseXML.getElementsByTagName("error")[0];
 695
 696                         if (error) {
 697                                 var code = error.getAttribute("error-code");
 698                                 var msg = error.getAttribute("error-msg");
 699                                 if (code != 0) {
 700                                         fatal_error(code, msg);
 701                                         return false;
 702                                 }
 703                         }
 704                 }
 705         } catch (e) {
 706                 exception_error("fatal_error_check", e);
 707         }
 708         return true;
 709 }
 710
 711 function feed_mi(elem) {
 712         try {
 713                 var imgs = elem.getElementsByTagName('IMG');
 714                 var spans = elem.getElementsByTagName('SPAN');
 715
 716                 for (var i = 0; i < imgs.length; i++) {
 717                         if (imgs[i].className == "dismiss")
 718                                 Element.show(imgs[i]);
 719                 }
 720
 721                 for (var i = 0; i < spans.length; i++) {
 722                         if (spans[i].className == "unread")
 723                                 Element.hide(spans[i]);
 724                 }
 725
 726
 727         } catch (e) {
 728                 exception_error("feed_mi", e);
 729         }
 730 }
 731
 732 function feed_mo(elem) {
 733         try {
 734                 var imgs = elem.getElementsByTagName('IMG');
 735                 var spans = elem.getElementsByTagName('SPAN');
 736
 737                 for (var i = 0; i < imgs.length; i++) {
 738                         if (imgs[i].className == "dismiss")
 739                                 Element.hide(imgs[i]);
 740                 }
 741
 742                 for (var i = 0; i < spans.length; i++) {
 743                         if (spans[i].className == "unread")
 744                                 Element.show(spans[i]);
 745                 }
 746
 747         } catch (e) {
 748                 exception_error("feed_mo", e);
 749         }
 750 }
 751
 752 function update_title(unread) {
 753         try {
 754                 document.title = "Tiny Tiny RSS";
 755
 756                 if (unread > 0)
 757                         document.title += " (" + unread + ")";
 758
 759         } catch (e) {
 760                 exception_error("update_title", e);
 761         }
 762 }
 763