src/main/resources/static/javascript/sone.js

   1 /* Sone JavaScript functions. */
   2
   3 /* jQuery overrides. */
   4 oldGetJson = jQuery.prototype.getJSON;
   5 jQuery.prototype.getJSON = function(url, data, successCallback, errorCallback) {
   6         if (typeof errorCallback == "undefined") {
   7                 return oldGetJson(url, data, successCallback);
   8         }
   9         if (jQuery.isFunction(data)) {
  10                 errorCallback = successCallback;
  11                 successCallback = data;
  12                 data = null;
  13         }
  14         return jQuery.ajax({
  15                 data: data,
  16                 error: errorCallback,
  17                 success: successCallback,
  18                 url: url
  19         });
  20 }
  21
  22 function isOnline() {
  23         return $("#sone").hasClass("online");
  24 }
  25
  26 function registerInputTextareaSwap(inputElement, defaultText, inputFieldName, optional, dontUseTextarea) {
  27         $(inputElement).each(function() {
  28                 textarea = $(dontUseTextarea ? "<input type=\"text\" name=\"" + inputFieldName + "\">" : "<textarea name=\"" + inputFieldName + "\"></textarea>").blur(function() {
  29                         if ($(this).val() == "") {
  30                                 $(this).hide();
  31                                 inputField = $(this).data("inputField");
  32                                 inputField.show().removeAttr("disabled").addClass("default");
  33                                 inputField.val(defaultText);
  34                         }
  35                 }).hide().data("inputField", $(this)).val($(this).val());
  36                 $(this).after(textarea);
  37                 (function(inputField, textarea) {
  38                         inputField.focus(function() {
  39                                 $(this).hide().attr("disabled", "disabled");
  40                                 textarea.show().focus();
  41                         });
  42                         if (inputField.val() == "") {
  43                                 inputField.addClass("default");
  44                                 inputField.val(defaultText);
  45                         } else {
  46                                 inputField.hide().attr("disabled", "disabled");
  47                                 textarea.show();
  48                         }
  49                         $(inputField.get(0).form).submit(function() {
  50                                 if (!optional && (textarea.val() == "")) {
  51                                         return false;
  52                                 }
  53                         });
  54                 })($(this), textarea);
  55         });
  56 }
  57
  58 /**
  59  * Adds a “comment” link to all status lines contained in the given element.
  60  *
  61  * @param postId
  62  *            The ID of the post
  63  * @param element
  64  *            The element to add a “comment” link to
  65  */
  66 function addCommentLink(postId, element, insertAfterThisElement) {
  67         if ($(element).find(".show-reply-form").length > 0) {
  68                 return;
  69         }
  70         commentElement = (function(postId) {
  71                 var commentElement = $("<div><span>Comment</span></div>").addClass("show-reply-form").click(function() {
  72                         markPostAsKnown(getPostElement(this));
  73                         replyElement = $("#sone .post#" + postId + " .create-reply");
  74                         replyElement.removeClass("hidden");
  75                         replyElement.removeClass("light");
  76                         (function(replyElement) {
  77                                 replyElement.find("input.reply-input").blur(function() {
  78                                         if ($(this).hasClass("default")) {
  79                                                 replyElement.addClass("light");
  80                                         }
  81                                 }).focus(function() {
  82                                         replyElement.removeClass("light");
  83                                 });
  84                         })(replyElement);
  85                         replyElement.find("input.reply-input").focus();
  86                 });
  87                 return commentElement;
  88         })(postId);
  89         $(insertAfterThisElement).after(commentElement.clone(true));
  90 }
  91
  92 var translations = {};
  93
  94 /**
  95  * Retrieves the translation for the given key and calls the callback function.
  96  * The callback function takes a single parameter, the translated string.
  97  *
  98  * @param key
  99  *            The key of the translation string
 100  * @param callback
 101  *            The callback function
 102  */
 103 function getTranslation(key, callback) {
 104         if (key in translations) {
 105                 callback(translations[key]);
 106                 return;
 107         }
 108         $.getJSON("getTranslation.ajax", {"key": key}, function(data, textStatus) {
 109                 if ((data != null) && data.success) {
 110                         translations[key] = data.value;
 111                         callback(data.value);
 112                 }
 113         }, function(xmlHttpRequest, textStatus, error) {
 114                 /* ignore error. */
 115         });
 116 }
 117
 118 /**
 119  * Filters the given Sone ID, replacing all “~” characters by an underscore.
 120  *
 121  * @param soneId
 122  *            The Sone ID to filter
 123  * @returns The filtered Sone ID
 124  */
 125 function filterSoneId(soneId) {
 126         return soneId.replace(/[^a-zA-Z0-9-]/g, "_");
 127 }
 128
 129 /**
 130  * Updates the status of the given Sone.
 131  *
 132  * @param soneId
 133  *            The ID of the Sone to update
 134  * @param status
 135  *            The status of the Sone (“idle”, “unknown”, “inserting”,
 136  *            “downloading”)
 137  * @param modified
 138  *            Whether the Sone is modified
 139  * @param locked
 140  *            Whether the Sone is locked
 141  * @param lastUpdated
 142  *            The date and time of the last update (formatted for display)
 143  */
 144 function updateSoneStatus(soneId, name, status, modified, locked, lastUpdated) {
 145         $("#sone .sone." + filterSoneId(soneId)).
 146                 toggleClass("unknown", status == "unknown").
 147                 toggleClass("idle", status == "idle").
 148                 toggleClass("inserting", status == "inserting").
 149                 toggleClass("downloading", status == "downloading").
 150                 toggleClass("modified", modified);
 151         $("#sone .sone." + filterSoneId(soneId) + " .lock").toggleClass("hidden", locked);
 152         $("#sone .sone." + filterSoneId(soneId) + " .unlock").toggleClass("hidden", !locked);
 153         $("#sone .sone." + filterSoneId(soneId) + " .last-update span.time").text(lastUpdated);
 154         $("#sone .sone." + filterSoneId(soneId) + " .profile-link a").text(name);
 155 }
 156
 157 /**
 158  * Enhances a “delete” button so that the confirmation is done on the same page.
 159  *
 160  * @param button
 161  *            The button element
 162  * @param text
 163  *            The text to show on the button
 164  * @param deleteCallback
 165  *            The callback that actually deletes something
 166  */
 167 function enhanceDeleteButton(button, text, deleteCallback) {
 168         (function(button) {
 169                 newButton = $("<button></button>").addClass("confirm").hide().text(text).click(function() {
 170                         $(this).fadeOut("slow");
 171                         deleteCallback();
 172                         return false;
 173                 }).insertAfter(button);
 174                 (function(button, newButton) {
 175                         button.click(function() {
 176                                 button.fadeOut("slow", function() {
 177                                         newButton.fadeIn("slow");
 178                                         $(document).one("click", function() {
 179                                                 if (this != newButton.get(0)) {
 180                                                         newButton.fadeOut(function() {
 181                                                                 button.fadeIn();
 182                                                         });
 183                                                 }
 184                                         });
 185                                 });
 186                                 return false;
 187                         });
 188                 })(button, newButton);
 189         })($(button));
 190 }
 191
 192 /**
 193  * Enhances a post’s “delete” button.
 194  *
 195  * @param button
 196  *            The button element
 197  * @param postId
 198  *            The ID of the post to delete
 199  * @param text
 200  *            The text to replace the button with
 201  */
 202 function enhanceDeletePostButton(button, postId, text) {
 203         enhanceDeleteButton(button, text, function() {
 204                 $.getJSON("deletePost.ajax", { "post": postId, "formPassword": getFormPassword() }, function(data, textStatus) {
 205                         if (data == null) {
 206                                 return;
 207                         }
 208                         if (data.success) {
 209                                 $("#sone .post#" + postId).slideUp();
 210                         } else if (data.error == "invalid-post-id") {
 211                                 alert("Invalid post ID given!");
 212                         } else if (data.error == "auth-required") {
 213                                 alert("You need to be logged in.");
 214                         } else if (data.error == "not-authorized") {
 215                                 alert("You are not allowed to delete this post.");
 216                         }
 217                 }, function(xmlHttpRequest, textStatus, error) {
 218                         /* ignore error. */
 219                 });
 220         });
 221 }
 222
 223 /**
 224  * Enhances a reply’s “delete” button.
 225  *
 226  * @param button
 227  *            The button element
 228  * @param replyId
 229  *            The ID of the reply to delete
 230  * @param text
 231  *            The text to replace the button with
 232  */
 233 function enhanceDeleteReplyButton(button, replyId, text) {
 234         enhanceDeleteButton(button, text, function() {
 235                 $.getJSON("deleteReply.ajax", { "reply": replyId, "formPassword": $("#sone #formPassword").text() }, function(data, textStatus) {
 236                         if (data == null) {
 237                                 return;
 238                         }
 239                         if (data.success) {
 240                                 $("#sone .reply#" + replyId).slideUp();
 241                         } else if (data.error == "invalid-reply-id") {
 242                                 alert("Invalid reply ID given!");
 243                         } else if (data.error == "auth-required") {
 244                                 alert("You need to be logged in.");
 245                         } else if (data.error == "not-authorized") {
 246                                 alert("You are not allowed to delete this reply.");
 247                         }
 248                 }, function(xmlHttpRequest, textStatus, error) {
 249                         /* ignore error. */
 250                 });
 251         });
 252 }
 253
 254 function getFormPassword() {
 255         return $("#sone #formPassword").text();
 256 }
 257
 258 function getSoneElement(element) {
 259         return $(element).parents(".sone");
 260 }
 261
 262 /**
 263  * Generates a list of Sones by concatening the names of the given sones with a
 264  * new line character (“\n”).
 265  *
 266  * @param sones
 267  *            The sones to format
 268  * @returns {String} The created string
 269  */
 270 function generateSoneList(sones) {
 271         var soneList = "";
 272         $.each(sones, function() {
 273                 if (soneList != "") {
 274                         soneList += ", ";
 275                 }
 276                 soneList += this.name;
 277         });
 278         return soneList;
 279 }
 280
 281 /**
 282  * Returns the ID of the Sone that this element belongs to.
 283  *
 284  * @param element
 285  *            The element to locate the matching Sone ID for
 286  * @returns The ID of the Sone, or undefined
 287  */
 288 function getSoneId(element) {
 289         return getSoneElement(element).find(".id").text();
 290 }
 291
 292 function getPostElement(element) {
 293         return $(element).closest(".post");
 294 }
 295
 296 function getPostId(element) {
 297         return getPostElement(element).attr("id");
 298 }
 299
 300 function getPostTime(element) {
 301         return getPostElement(element).find(".post-time").text();
 302 }
 303
 304 function getReplyElement(element) {
 305         return $(element).closest(".reply");
 306 }
 307
 308 function getReplyId(element) {
 309         return getReplyElement(element).attr("id");
 310 }
 311
 312 function getReplyTime(element) {
 313         return getReplyElement(element).find(".reply-time").text();
 314 }
 315
 316 function likePost(postId) {
 317         $.getJSON("like.ajax", { "type": "post", "post" : postId, "formPassword": getFormPassword() }, function(data, textStatus) {
 318                 if ((data == null) || !data.success) {
 319                         return;
 320                 }
 321                 $("#sone .post#" + postId + " > .inner-part > .status-line .like").addClass("hidden");
 322                 $("#sone .post#" + postId + " > .inner-part > .status-line .unlike").removeClass("hidden");
 323                 updatePostLikes(postId);
 324         }, function(xmlHttpRequest, textStatus, error) {
 325                 /* ignore error. */
 326         });
 327 }
 328
 329 function unlikePost(postId) {
 330         $.getJSON("unlike.ajax", { "type": "post", "post" : postId, "formPassword": getFormPassword() }, function(data, textStatus) {
 331                 if ((data == null) || !data.success) {
 332                         return;
 333                 }
 334                 $("#sone .post#" + postId + " > .inner-part > .status-line .unlike").addClass("hidden");
 335                 $("#sone .post#" + postId + " > .inner-part > .status-line .like").removeClass("hidden");
 336                 updatePostLikes(postId);
 337         }, function(xmlHttpRequest, textStatus, error) {
 338                 /* ignore error. */
 339         });
 340 }
 341
 342 function updatePostLikes(postId) {
 343         $.getJSON("getLikes.ajax", { "type": "post", "post": postId }, function(data, textStatus) {
 344                 if ((data != null) && data.success) {
 345                         $("#sone .post#" + postId + " > .inner-part > .status-line .likes").toggleClass("hidden", data.likes == 0)
 346                         $("#sone .post#" + postId + " > .inner-part > .status-line .likes span.like-count").text(data.likes);
 347                         $("#sone .post#" + postId + " > .inner-part > .status-line .likes > span").attr("title", generateSoneList(data.sones));
 348                 }
 349         }, function(xmlHttpRequest, textStatus, error) {
 350                 /* ignore error. */
 351         });
 352 }
 353
 354 function likeReply(replyId) {
 355         $.getJSON("like.ajax", { "type": "reply", "reply" : replyId, "formPassword": getFormPassword() }, function(data, textStatus) {
 356                 if ((data == null) || !data.success) {
 357                         return;
 358                 }
 359                 $("#sone .reply#" + replyId + " .status-line .like").addClass("hidden");
 360                 $("#sone .reply#" + replyId + " .status-line .unlike").removeClass("hidden");
 361                 updateReplyLikes(replyId);
 362         }, function(xmlHttpRequest, textStatus, error) {
 363                 /* ignore error. */
 364         });
 365 }
 366
 367 function unlikeReply(replyId) {
 368         $.getJSON("unlike.ajax", { "type": "reply", "reply" : replyId, "formPassword": getFormPassword() }, function(data, textStatus) {
 369                 if ((data == null) || !data.success) {
 370                         return;
 371                 }
 372                 $("#sone .reply#" + replyId + " .status-line .unlike").addClass("hidden");
 373                 $("#sone .reply#" + replyId + " .status-line .like").removeClass("hidden");
 374                 updateReplyLikes(replyId);
 375         }, function(xmlHttpRequest, textStatus, error) {
 376                 /* ignore error. */
 377         });
 378 }
 379
 380 function updateReplyLikes(replyId) {
 381         $.getJSON("getLikes.ajax", { "type": "reply", "reply": replyId }, function(data, textStatus) {
 382                 if ((data != null) && data.success) {
 383                         $("#sone .reply#" + replyId + " .status-line .likes").toggleClass("hidden", data.likes == 0)
 384                         $("#sone .reply#" + replyId + " .status-line .likes span.like-count").text(data.likes);
 385                         $("#sone .reply#" + replyId + " .status-line .likes > span").attr("title", generateSoneList(data.sones));
 386                 }
 387         }, function(xmlHttpRequest, textStatus, error) {
 388                 /* ignore error. */
 389         });
 390 }
 391
 392 /**
 393  * Posts a reply and calls the given callback when the request finishes.
 394  *
 395  * @param postId
 396  *            The ID of the post the reply refers to
 397  * @param text
 398  *            The text to post
 399  * @param callbackFunction
 400  *            The callback function to call when the request finishes (takes 3
 401  *            parameters: success, error, replyId)
 402  */
 403 function postReply(postId, text, callbackFunction) {
 404         $.getJSON("createReply.ajax", { "formPassword" : getFormPassword(), "post" : postId, "text": text }, function(data, textStatus) {
 405                 if (data == null) {
 406                         /* TODO - show error */
 407                         return;
 408                 }
 409                 if (data.success) {
 410                         callbackFunction(true, null, data.reply);
 411                 } else {
 412                         callbackFunction(false, data.error);
 413                 }
 414         }, function(xmlHttpRequest, textStatus, error) {
 415                 /* ignore error. */
 416         });
 417 }
 418
 419 /**
 420  * Requests information about the reply with the given ID.
 421  *
 422  * @param replyId
 423  *            The ID of the reply
 424  * @param callbackFunction
 425  *            A callback function (parameters soneId, soneName, replyTime,
 426  *            replyDisplayTime, text, html)
 427  */
 428 function getReply(replyId, callbackFunction) {
 429         $.getJSON("getReply.ajax", { "reply" : replyId }, function(data, textStatus) {
 430                 if ((data != null) && data.success) {
 431                         callbackFunction(data.soneId, data.soneName, data.time, data.displayTime, data.text, data.html);
 432                 }
 433         }, function(xmlHttpRequest, textStatus, error) {
 434                 /* ignore error. */
 435         });
 436 }
 437
 438 /**
 439  * Ajaxifies the given post by enhancing all eligible elements with AJAX.
 440  *
 441  * @param postElement
 442  *            The post element to ajaxify
 443  */
 444 function ajaxifyPost(postElement) {
 445         $(postElement).find("form").submit(function() {
 446                 return false;
 447         });
 448         $(postElement).find(".create-reply button:submit").click(function() {
 449                 inputField = $(this.form).find(":input:enabled").get(0);
 450                 postId = getPostId(this);
 451                 text = $(inputField).val();
 452                 $(inputField).val("");
 453                 postReply(postId, text, function(success, error, replyId) {
 454                         if (success) {
 455                                 loadNewReply(replyId);
 456                                 markPostAsKnown(getPostElement(inputField));
 457                                 $("#sone .post#" + postId + " .create-reply").addClass("hidden");
 458                         } else {
 459                                 alert(error);
 460                         }
 461                 });
 462                 return false;
 463         });
 464
 465         /* replace all “delete” buttons with javascript. */
 466         (function(postElement) {
 467                 getTranslation("WebInterface.Confirmation.DeletePostButton", function(deletePostText) {
 468                         postId = getPostId(postElement);
 469                         enhanceDeletePostButton($(postElement).find(".delete-post button"), postId, deletePostText);
 470                 });
 471         })(postElement);
 472
 473         /* convert all “like” buttons to javascript functions. */
 474         $(postElement).find(".like-post").submit(function() {
 475                 likePost(getPostId(this));
 476                 markPostAsKnown(getPostElement(this));
 477                 return false;
 478         });
 479         $(postElement).find(".unlike-post").submit(function() {
 480                 unlikePost(getPostId(this));
 481                 markPostAsKnown(getPostElement(this));
 482                 return false;
 483         });
 484
 485         /* add “comment” link. */
 486         addCommentLink(getPostId(postElement), postElement, $(postElement).find(".post-status-line .time"));
 487
 488         /* process all replies. */
 489         $(postElement).find(".reply").each(function() {
 490                 ajaxifyReply(this);
 491         });
 492
 493         /* process reply input fields. */
 494         getTranslation("WebInterface.DefaultText.Reply", function(text) {
 495                 $(postElement).find("input.reply-input").each(function() {
 496                         registerInputTextareaSwap(this, text, "text", false, false);
 497                 });
 498         });
 499
 500         /* mark everything as known on click. */
 501         $(postElement).click(function() {
 502                 markPostAsKnown(this);
 503         });
 504
 505         /* hide reply input field. */
 506         $(postElement).find(".create-reply").addClass("hidden");
 507 }
 508
 509 /**
 510  * Ajaxifies the given reply element.
 511  *
 512  * @param replyElement
 513  *            The reply element to ajaxify
 514  */
 515 function ajaxifyReply(replyElement) {
 516         $(replyElement).find(".like-reply").submit(function() {
 517                 likeReply(getReplyId(this));
 518                 markPostAsKnown(getPostElement(this));
 519                 return false;
 520         });
 521         $(replyElement).find(".unlike-reply").submit(function() {
 522                 unlikeReply(getReplyId(this));
 523                 markPostAsKnown(getPostElement(this));
 524                 return false;
 525         });
 526         (function(replyElement) {
 527                 getTranslation("WebInterface.Confirmation.DeleteReplyButton", function(deleteReplyText) {
 528                         $(replyElement).find(".delete-reply button").each(function() {
 529                                 enhanceDeleteReplyButton(this, getReplyId(replyElement), deleteReplyText);
 530                         });
 531                 });
 532         })(replyElement);
 533         addCommentLink(getPostId(replyElement), replyElement, $(replyElement).find(".reply-status-line .time"));
 534
 535         /* mark post and all replies as known on click. */
 536         $(replyElement).click(function() {
 537                 markPostAsKnown(getPostElement(replyElement));
 538         });
 539 }
 540
 541 /**
 542  * Ajaxifies the given notification by replacing the form with AJAX.
 543  *
 544  * @param notification
 545  *            jQuery object representing the notification.
 546  */
 547 function ajaxifyNotification(notification) {
 548         notification.find("form.dismiss").submit(function() {
 549                 return false;
 550         });
 551         notification.find("form.dismiss button").click(function() {
 552                 $.getJSON("dismissNotification.ajax", { "formPassword" : getFormPassword(), "notification" : notification.attr("id") }, function(data, textStatus) {
 553                         /* dismiss in case of error, too. */
 554                         notification.slideUp();
 555                 }, function(xmlHttpRequest, textStatus, error) {
 556                         /* ignore error. */
 557                 });
 558         });
 559         return notification;
 560 }
 561
 562 function getStatus() {
 563         $.getJSON("getStatus.ajax", {"loadAllSones": isKnownSonesPage()}, function(data, textStatus) {
 564                 if ((data != null) && data.success) {
 565                         /* process Sone information. */
 566                         $.each(data.sones, function(index, value) {
 567                                 updateSoneStatus(value.id, value.name, value.status, value.modified, value.locked, value.lastUpdated);
 568                         });
 569                         /* process notifications. */
 570                         $.each(data.notifications, function(index, value) {
 571                                 oldNotification = $("#sone #notification-area .notification#" + value.id);
 572                                 notification = ajaxifyNotification(createNotification(value.id, value.text, value.dismissable)).hide();
 573                                 if (oldNotification.length != 0) {
 574                                         oldNotification.replaceWith(notification.show());
 575                                 } else {
 576                                         $("#sone #notification-area").append(notification);
 577                                         notification.slideDown();
 578                                 }
 579                                 setActivity();
 580                         });
 581                         $.each(data.removedNotifications, function(index, value) {
 582                                 $("#sone #notification-area .notification#" + value.id).slideUp();
 583                         });
 584                         /* process new posts. */
 585                         $.each(data.newPosts, function(index, value) {
 586                                 loadNewPost(value);
 587                         });
 588                         /* process new replies. */
 589                         $.each(data.newReplies, function(index, value) {
 590                                 loadNewReply(value);
 591                         });
 592                         /* do it again in 5 seconds. */
 593                         setTimeout(getStatus, 5000);
 594                 } else {
 595                         /* data.success was false, wait 30 seconds. */
 596                         setTimeout(getStatus, 30000);
 597                 }
 598         }, function(xmlHttpRequest, textStatus, error) {
 599                 /* something really bad happend, wait a minute. */
 600                 setTimeout(getStatus, 60000);
 601         })
 602 }
 603
 604 /**
 605  * Returns the content of the page-id attribute.
 606  *
 607  * @returns The page ID
 608  */
 609 function getPageId() {
 610         return $("#sone .page-id").text();
 611 }
 612
 613 /**
 614  * Returns whether the current page is the index page.
 615  *
 616  * @returns {Boolean} <code>true</code> if the current page is the index page,
 617  *          <code>false</code> otherwise
 618  */
 619 function isIndexPage() {
 620         return getPageId() == "index";
 621 }
 622
 623 /**
 624  * Returns whether the current page is a “view Sone” page.
 625  *
 626  * @returns {Boolean} <code>true</code> if the current page is a “view Sone”
 627  *          page, <code>false</code> otherwise
 628  */
 629 function isViewSonePage() {
 630         return getPageId() == "view-sone";
 631 }
 632
 633 /**
 634  * Returns the ID of the currently shown Sone. This will only return a sensible
 635  * value if isViewSonePage() returns <code>true</code>.
 636  *
 637  * @returns The ID of the currently shown Sone
 638  */
 639 function getShownSoneId() {
 640         return $("#sone .sone-id").text();
 641 }
 642
 643 /**
 644  * Returns whether the current page is a “view post” page.
 645  *
 646  * @returns {Boolean} <code>true</code> if the current page is a “view post”
 647  *          page, <code>false</code> otherwise
 648  */
 649 function isViewPostPage() {
 650         return getPageId() == "view-post";
 651 }
 652
 653 /**
 654  * Returns the ID of the currently shown post. This will only return a sensible
 655  * value if isViewPostPage() returns <code>true</code>.
 656  *
 657  * @returns The ID of the currently shown post
 658  */
 659 function getShownPostId() {
 660         return $("#sone .post-id").text();
 661 }
 662
 663 /**
 664  * Returns whether the current page is the “known Sones” page.
 665  *
 666  * @returns {Boolean} <code>true</code> if the current page is the “known
 667  *          Sones” page, <code>false</code> otherwise
 668  */
 669 function isKnownSonesPage() {
 670         return getPageId() == "known-sones";
 671 }
 672
 673 var loadedPosts = {};
 674 var loadedReplies = {};
 675
 676 function loadNewPost(postId) {
 677         if (postId in loadedPosts) {
 678                 return;
 679         }
 680         loadedPosts[postId] = true;
 681         $.getJSON("getPost.ajax", { "post" : postId }, function(data, textStatus) {
 682                 if ((data != null) && data.success) {
 683                         if (!isIndexPage() && !(isViewSonePage() && (getShownSoneId() == data.post.sone))) {
 684                                 return;
 685                         }
 686                         var firstOlderPost = null;
 687                         $("#sone .post").each(function() {
 688                                 if (getPostTime(this) < data.post.time) {
 689                                         firstOlderPost = $(this);
 690                                         return false;
 691                                 }
 692                         });
 693                         newPost = $(data.post.html).addClass("hidden");
 694                         if (firstOlderPost != null) {
 695                                 newPost.insertBefore(firstOlderPost);
 696                         } else {
 697                                 $("#sone .post:last").append(newPost);
 698                         }
 699                         ajaxifyPost(newPost);
 700                         newPost.slideDown();
 701                         setActivity();
 702                 }
 703         });
 704 }
 705
 706 function loadNewReply(replyId) {
 707         if (replyId in loadedReplies) {
 708                 return;
 709         }
 710         loadedReplies[replyId] = true;
 711         $.getJSON("getReply.ajax", { "reply": replyId }, function(data, textStatus) {
 712                 /* find post. */
 713                 if ((data != null) && data.success) {
 714                         $("#sone .post#" + data.reply.postId).each(function() {
 715                                 var firstNewerReply = null;
 716                                 $(this).find(".replies .reply").each(function() {
 717                                         if (getReplyTime(this) > data.reply.time) {
 718                                                 firstNewerReply = $(this);
 719                                                 return false;
 720                                         }
 721                                 });
 722                                 newReply = $(data.reply.html).addClass("hidden");
 723                                 if (firstNewerReply != null) {
 724                                         newReply.insertBefore(firstNewerReply);
 725                                 } else {
 726                                         if ($(this).find(".replies .create-reply")) {
 727                                                 $(this).find(".replies .create-reply").before(newReply);
 728                                         } else {
 729                                                 $(this).find(".replies").append(newReply);
 730                                         }
 731                                 }
 732                                 ajaxifyReply(newReply);
 733                                 newReply.slideDown();
 734                                 setActivity();
 735                         });
 736                 }
 737         });
 738 }
 739
 740 function markPostAsKnown(postElements) {
 741         $(postElements).each(function() {
 742                 postElement = this;
 743                 if ($(postElement).hasClass("new")) {
 744                         (function(postElement) {
 745                                 $.getJSON("markPostAsKnown.ajax", {"formPassword": getFormPassword(), "post": getPostId(postElement)}, function(data, textStatus) {
 746                                         $(postElement).removeClass("new");
 747                                 });
 748                         })(postElement);
 749                 }
 750         });
 751         markReplyAsKnown($(postElements).find(".reply"));
 752 }
 753
 754 function markReplyAsKnown(replyElements) {
 755         $(replyElements).each(function() {
 756                 replyElement = this;
 757                 if ($(replyElement).hasClass("new")) {
 758                         (function(replyElement) {
 759                                 $.getJSON("markReplyAsKnown.ajax", {"formPassword": getFormPassword(), "reply": getReplyId(replyElement)}, function(data, textStatus) {
 760                                         $(replyElement).removeClass("new");
 761                                 });
 762                         })(replyElement);
 763                 }
 764         });
 765 }
 766
 767 function resetActivity() {
 768         title = document.title;
 769         if (title.indexOf('(') == 0) {
 770                 document.title = title.substr(title.indexOf(' ') + 1);
 771         }
 772 }
 773
 774 function setActivity() {
 775         if (!focus) {
 776                 title = document.title;
 777                 if (title.indexOf('(') != 0) {
 778                         document.title = "(!) " + title;
 779                 }
 780         }
 781 }
 782
 783 /**
 784  * Creates a new notification.
 785  *
 786  * @param id
 787  *            The ID of the notificaiton
 788  * @param text
 789  *            The text of the notification
 790  * @param dismissable
 791  *            <code>true</code> if the notification can be dismissed by the
 792  *            user
 793  */
 794 function createNotification(id, text, dismissable) {
 795         notification = $("<div></div>").addClass("notification").attr("id", id);
 796         if (dismissable) {
 797                 dismissForm = $("#sone #notification-area #notification-dismiss-template").clone().removeClass("hidden").removeAttr("id")
 798                 dismissForm.find("input[name=notification]").val(id);
 799                 notification.append(dismissForm);
 800         }
 801         notification.append(text);
 802         return notification;
 803 }
 804
 805 //
 806 // EVERYTHING BELOW HERE IS EXECUTED AFTER LOADING THE PAGE
 807 //
 808
 809 var focus = true;
 810
 811 $(document).ready(function() {
 812
 813         /* this initializes the status update input field. */
 814         getTranslation("WebInterface.DefaultText.StatusUpdate", function(defaultText) {
 815                 registerInputTextareaSwap("#sone #update-status .status-input", defaultText, "text", false, false);
 816                 $("#sone #update-status").submit(function() {
 817                         text = $(this).find(":input:enabled").val();
 818                         $.getJSON("createPost.ajax", { "formPassword": getFormPassword(), "text": text }, function(data, textStatus) {
 819                                 if ((data != null) && data.success) {
 820                                         loadNewPost(data.postId);
 821                                 }
 822                         });
 823                         $(this).find(":input:enabled").val("").blur();
 824                         return false;
 825                 });
 826         });
 827
 828         /* ajaxify input field on “view Sone” page. */
 829         getTranslation("WebInterface.DefaultText.Message", function(defaultText) {
 830                 registerInputTextareaSwap("#sone #post-message input[name=text]", defaultText, "text", false, false);
 831                 $("#sone #post-message").submit(function() {
 832                         text = $(this).find(":input:enabled").val();
 833                         $.getJSON("ajax/createPost.ajax", { "formPassword": getFormPassword(), "recipient": $("#sone #sone-id").text(), "text": text }, function(data, textStatus) {
 834                                 if ((data != null) && data.success) {
 835                                         loadNewPost(data.postId);
 836                                 }
 837                         });
 838                         $(this).find(":input:enabled").val("").blur();
 839                         return false;
 840                 });
 841         });
 842
 843         /* Ajaxifies all posts. */
 844         /* calling getTranslation here will cache the necessary values. */
 845         getTranslation("WebInterface.Confirmation.DeletePostButton", function(text) {
 846                 getTranslation("WebInterface.Confirmation.DeleteReplyButton", function(text) {
 847                         getTranslation("WebInterface.DefaultText.Reply", function(text) {
 848                                 $("#sone .post").each(function() {
 849                                         ajaxifyPost(this);
 850                                 });
 851                         });
 852                 });
 853         });
 854
 855         /* hides all replies but the latest two. */
 856         if (!isViewPostPage()) {
 857                 getTranslation("WebInterface.ClickToShow.Replies", function(text) {
 858                         $("#sone .post .replies").each(function() {
 859                                 allReplies = $(this).find(".reply");
 860                                 if (allReplies.length > 2) {
 861                                         newHidden = false;
 862                                         for (replyIndex = 0; replyIndex < (allReplies.length - 2); ++replyIndex) {
 863                                                 $(allReplies[replyIndex]).addClass("hidden");
 864                                                 newHidden |= $(allReplies[replyIndex]).hasClass("new");
 865                                         }
 866                                         clickToShowElement = $("<div></div>").addClass("click-to-show");
 867                                         if (newHidden) {
 868                                                 clickToShowElement.addClass("new");
 869                                         }
 870                                         (function(clickToShowElement, allReplies, text) {
 871                                                 clickToShowElement.text(text);
 872                                                 clickToShowElement.click(function() {
 873                                                         allReplies.removeClass("hidden");
 874                                                         clickToShowElement.addClass("hidden");
 875                                                 });
 876                                         })(clickToShowElement, allReplies, text);
 877                                         $(allReplies[0]).before(clickToShowElement);
 878                                 }
 879                         });
 880                 });
 881         }
 882
 883         /*
 884          * convert all “follow”, “unfollow”, “lock”, and “unlock” links to something
 885          * nicer.
 886          */
 887         $("#sone .follow").submit(function() {
 888                 var followElement = this;
 889                 $.getJSON("followSone.ajax", { "sone": getSoneId(this), "formPassword": getFormPassword() }, function() {
 890                         $(followElement).addClass("hidden");
 891                         $(followElement).parent().find(".unfollow").removeClass("hidden");
 892                 });
 893                 return false;
 894         });
 895         $("#sone .unfollow").submit(function() {
 896                 var unfollowElement = this;
 897                 $.getJSON("unfollowSone.ajax", { "sone": getSoneId(this), "formPassword": getFormPassword() }, function() {
 898                         $(unfollowElement).addClass("hidden");
 899                         $(unfollowElement).parent().find(".follow").removeClass("hidden");
 900                 });
 901                 return false;
 902         });
 903         $("#sone .lock").submit(function() {
 904                 var lockElement = this;
 905                 $.getJSON("lockSone.ajax", { "sone" : getSoneId(this), "formPassword" : getFormPassword() }, function() {
 906                         $(lockElement).addClass("hidden");
 907                         $(lockElement).parent().find(".unlock").removeClass("hidden");
 908                 });
 909                 return false;
 910         });
 911         $("#sone .unlock").submit(function() {
 912                 var unlockElement = this;
 913                 $.getJSON("unlockSone.ajax", { "sone" : getSoneId(this), "formPassword" : getFormPassword() }, function() {
 914                         $(unlockElement).addClass("hidden");
 915                         $(unlockElement).parent().find(".lock").removeClass("hidden");
 916                 });
 917                 return false;
 918         });
 919
 920         /* process all existing notifications, ajaxify dismiss buttons. */
 921         $("#sone #notification-area .notification").each(function() {
 922                 ajaxifyNotification($(this));
 923         });
 924
 925         /* activate status polling. */
 926         setTimeout(getStatus, 5000);
 927
 928         /* reset activity counter when the page has focus. */
 929         $(window).focus(function() {
 930                 focus = true;
 931                 resetActivity();
 932         }).blur(function() {
 933                 focus = false;
 934         })
 935
 936 });