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                 separator = $("<span> · </span>").addClass("separator");
  72                 var commentElement = $("<div><span>Comment</span></div>").addClass("show-reply-form").click(function() {
  73                         markPostAsKnown(getPostElement(this));
  74                         replyElement = $("#sone .post#" + postId + " .create-reply");
  75                         replyElement.removeClass("hidden");
  76                         replyElement.removeClass("light");
  77                         (function(replyElement) {
  78                                 replyElement.find("input.reply-input").blur(function() {
  79                                         if ($(this).hasClass("default")) {
  80                                                 replyElement.addClass("light");
  81                                         }
  82                                 }).focus(function() {
  83                                         replyElement.removeClass("light");
  84                                 });
  85                         })(replyElement);
  86                         replyElement.find("input.reply-input").focus();
  87                 });
  88                 return commentElement;
  89         })(postId);
  90         $(insertAfterThisElement).after(commentElement.clone(true));
  91         $(insertAfterThisElement).after(separator);
  92 }
  93
  94 var translations = {};
  95
  96 /**
  97  * Retrieves the translation for the given key and calls the callback function.
  98  * The callback function takes a single parameter, the translated string.
  99  *
 100  * @param key
 101  *            The key of the translation string
 102  * @param callback
 103  *            The callback function
 104  */
 105 function getTranslation(key, callback) {
 106         if (key in translations) {
 107                 callback(translations[key]);
 108                 return;
 109         }
 110         $.getJSON("getTranslation.ajax", {"key": key}, function(data, textStatus) {
 111                 if ((data != null) && data.success) {
 112                         translations[key] = data.value;
 113                         callback(data.value);
 114                 }
 115         }, function(xmlHttpRequest, textStatus, error) {
 116                 /* ignore error. */
 117         });
 118 }
 119
 120 /**
 121  * Filters the given Sone ID, replacing all “~” characters by an underscore.
 122  *
 123  * @param soneId
 124  *            The Sone ID to filter
 125  * @returns The filtered Sone ID
 126  */
 127 function filterSoneId(soneId) {
 128         return soneId.replace(/[^a-zA-Z0-9-]/g, "_");
 129 }
 130
 131 /**
 132  * Updates the status of the given Sone.
 133  *
 134  * @param soneId
 135  *            The ID of the Sone to update
 136  * @param status
 137  *            The status of the Sone (“idle”, “unknown”, “inserting”,
 138  *            “downloading”)
 139  * @param modified
 140  *            Whether the Sone is modified
 141  * @param locked
 142  *            Whether the Sone is locked
 143  * @param lastUpdated
 144  *            The date and time of the last update (formatted for display)
 145  */
 146 function updateSoneStatus(soneId, name, status, modified, locked, lastUpdated) {
 147         $("#sone .sone." + filterSoneId(soneId)).
 148                 toggleClass("unknown", status == "unknown").
 149                 toggleClass("idle", status == "idle").
 150                 toggleClass("inserting", status == "inserting").
 151                 toggleClass("downloading", status == "downloading").
 152                 toggleClass("modified", modified);
 153         $("#sone .sone." + filterSoneId(soneId) + " .lock").toggleClass("hidden", locked);
 154         $("#sone .sone." + filterSoneId(soneId) + " .unlock").toggleClass("hidden", !locked);
 155         $("#sone .sone." + filterSoneId(soneId) + " .last-update span.time").text(lastUpdated);
 156         $("#sone .sone." + filterSoneId(soneId) + " .profile-link a").text(name);
 157 }
 158
 159 /**
 160  * Enhances a “delete” button so that the confirmation is done on the same page.
 161  *
 162  * @param button
 163  *            The button element
 164  * @param text
 165  *            The text to show on the button
 166  * @param deleteCallback
 167  *            The callback that actually deletes something
 168  */
 169 function enhanceDeleteButton(button, text, deleteCallback) {
 170         (function(button) {
 171                 newButton = $("<button></button>").addClass("confirm").hide().text(text).click(function() {
 172                         $(this).fadeOut("slow");
 173                         deleteCallback();
 174                         return false;
 175                 }).insertAfter(button);
 176                 (function(button, newButton) {
 177                         button.click(function() {
 178                                 button.fadeOut("slow", function() {
 179                                         newButton.fadeIn("slow");
 180                                         $(document).one("click", function() {
 181                                                 if (this != newButton.get(0)) {
 182                                                         newButton.fadeOut(function() {
 183                                                                 button.fadeIn();
 184                                                         });
 185                                                 }
 186                                         });
 187                                 });
 188                                 return false;
 189                         });
 190                 })(button, newButton);
 191         })($(button));
 192 }
 193
 194 /**
 195  * Enhances a post’s “delete” button.
 196  *
 197  * @param button
 198  *            The button element
 199  * @param postId
 200  *            The ID of the post to delete
 201  * @param text
 202  *            The text to replace the button with
 203  */
 204 function enhanceDeletePostButton(button, postId, text) {
 205         enhanceDeleteButton(button, text, function() {
 206                 $.getJSON("deletePost.ajax", { "post": postId, "formPassword": getFormPassword() }, function(data, textStatus) {
 207                         if (data == null) {
 208                                 return;
 209                         }
 210                         if (data.success) {
 211                                 $("#sone .post#" + postId).slideUp();
 212                         } else if (data.error == "invalid-post-id") {
 213                                 alert("Invalid post ID given!");
 214                         } else if (data.error == "auth-required") {
 215                                 alert("You need to be logged in.");
 216                         } else if (data.error == "not-authorized") {
 217                                 alert("You are not allowed to delete this post.");
 218                         }
 219                 }, function(xmlHttpRequest, textStatus, error) {
 220                         /* ignore error. */
 221                 });
 222         });
 223 }
 224
 225 /**
 226  * Enhances a reply’s “delete” button.
 227  *
 228  * @param button
 229  *            The button element
 230  * @param replyId
 231  *            The ID of the reply to delete
 232  * @param text
 233  *            The text to replace the button with
 234  */
 235 function enhanceDeleteReplyButton(button, replyId, text) {
 236         enhanceDeleteButton(button, text, function() {
 237                 $.getJSON("deleteReply.ajax", { "reply": replyId, "formPassword": $("#sone #formPassword").text() }, function(data, textStatus) {
 238                         if (data == null) {
 239                                 return;
 240                         }
 241                         if (data.success) {
 242                                 $("#sone .reply#" + replyId).slideUp();
 243                         } else if (data.error == "invalid-reply-id") {
 244                                 alert("Invalid reply ID given!");
 245                         } else if (data.error == "auth-required") {
 246                                 alert("You need to be logged in.");
 247                         } else if (data.error == "not-authorized") {
 248                                 alert("You are not allowed to delete this reply.");
 249                         }
 250                 }, function(xmlHttpRequest, textStatus, error) {
 251                         /* ignore error. */
 252                 });
 253         });
 254 }
 255
 256 function getFormPassword() {
 257         return $("#sone #formPassword").text();
 258 }
 259
 260 function getSoneElement(element) {
 261         return $(element).closest(".sone");
 262 }
 263
 264 /**
 265  * Generates a list of Sones by concatening the names of the given sones with a
 266  * new line character (“\n”).
 267  *
 268  * @param sones
 269  *            The sones to format
 270  * @returns {String} The created string
 271  */
 272 function generateSoneList(sones) {
 273         var soneList = "";
 274         $.each(sones, function() {
 275                 if (soneList != "") {
 276                         soneList += ", ";
 277                 }
 278                 soneList += this.name;
 279         });
 280         return soneList;
 281 }
 282
 283 /**
 284  * Returns the ID of the Sone that this element belongs to.
 285  *
 286  * @param element
 287  *            The element to locate the matching Sone ID for
 288  * @returns The ID of the Sone, or undefined
 289  */
 290 function getSoneId(element) {
 291         return getSoneElement(element).find(".id").text();
 292 }
 293
 294 function getPostElement(element) {
 295         return $(element).closest(".post");
 296 }
 297
 298 function getPostId(element) {
 299         return getPostElement(element).attr("id");
 300 }
 301
 302 function getPostTime(element) {
 303         return getPostElement(element).find(".post-time").text();
 304 }
 305
 306 /**
 307  * Returns the author of the post the given element belongs to.
 308  *
 309  * @param element
 310  *            The element whose post to get the author for
 311  * @returns The ID of the authoring Sone
 312  */
 313 function getPostAuthor(element) {
 314         return getPostElement(element).find(".post-author").text();
 315 }
 316
 317 function getReplyElement(element) {
 318         return $(element).closest(".reply");
 319 }
 320
 321 function getReplyId(element) {
 322         return getReplyElement(element).attr("id");
 323 }
 324
 325 function getReplyTime(element) {
 326         return getReplyElement(element).find(".reply-time").text();
 327 }
 328
 329 /**
 330  * Returns the author of the reply the given element belongs to.
 331  *
 332  * @param element
 333  *            The element whose reply to get the author for
 334  * @returns The ID of the authoring Sone
 335  */
 336 function getReplyAuthor(element) {
 337         return getReplyElement(element).find(".reply-author").text();
 338 }
 339
 340 function likePost(postId) {
 341         $.getJSON("like.ajax", { "type": "post", "post" : postId, "formPassword": getFormPassword() }, function(data, textStatus) {
 342                 if ((data == null) || !data.success) {
 343                         return;
 344                 }
 345                 $("#sone .post#" + postId + " > .inner-part > .status-line .like").addClass("hidden");
 346                 $("#sone .post#" + postId + " > .inner-part > .status-line .unlike").removeClass("hidden");
 347                 updatePostLikes(postId);
 348         }, function(xmlHttpRequest, textStatus, error) {
 349                 /* ignore error. */
 350         });
 351 }
 352
 353 function unlikePost(postId) {
 354         $.getJSON("unlike.ajax", { "type": "post", "post" : postId, "formPassword": getFormPassword() }, function(data, textStatus) {
 355                 if ((data == null) || !data.success) {
 356                         return;
 357                 }
 358                 $("#sone .post#" + postId + " > .inner-part > .status-line .unlike").addClass("hidden");
 359                 $("#sone .post#" + postId + " > .inner-part > .status-line .like").removeClass("hidden");
 360                 updatePostLikes(postId);
 361         }, function(xmlHttpRequest, textStatus, error) {
 362                 /* ignore error. */
 363         });
 364 }
 365
 366 function updatePostLikes(postId) {
 367         $.getJSON("getLikes.ajax", { "type": "post", "post": postId }, function(data, textStatus) {
 368                 if ((data != null) && data.success) {
 369                         $("#sone .post#" + postId + " > .inner-part > .status-line .likes").toggleClass("hidden", data.likes == 0)
 370                         $("#sone .post#" + postId + " > .inner-part > .status-line .likes span.like-count").text(data.likes);
 371                         $("#sone .post#" + postId + " > .inner-part > .status-line .likes > span").attr("title", generateSoneList(data.sones));
 372                 }
 373         }, function(xmlHttpRequest, textStatus, error) {
 374                 /* ignore error. */
 375         });
 376 }
 377
 378 function likeReply(replyId) {
 379         $.getJSON("like.ajax", { "type": "reply", "reply" : replyId, "formPassword": getFormPassword() }, function(data, textStatus) {
 380                 if ((data == null) || !data.success) {
 381                         return;
 382                 }
 383                 $("#sone .reply#" + replyId + " .status-line .like").addClass("hidden");
 384                 $("#sone .reply#" + replyId + " .status-line .unlike").removeClass("hidden");
 385                 updateReplyLikes(replyId);
 386         }, function(xmlHttpRequest, textStatus, error) {
 387                 /* ignore error. */
 388         });
 389 }
 390
 391 function unlikeReply(replyId) {
 392         $.getJSON("unlike.ajax", { "type": "reply", "reply" : replyId, "formPassword": getFormPassword() }, function(data, textStatus) {
 393                 if ((data == null) || !data.success) {
 394                         return;
 395                 }
 396                 $("#sone .reply#" + replyId + " .status-line .unlike").addClass("hidden");
 397                 $("#sone .reply#" + replyId + " .status-line .like").removeClass("hidden");
 398                 updateReplyLikes(replyId);
 399         }, function(xmlHttpRequest, textStatus, error) {
 400                 /* ignore error. */
 401         });
 402 }
 403
 404 /**
 405  * Trusts the Sone with the given ID.
 406  *
 407  * @param soneId
 408  *            The ID of the Sone to trust
 409  */
 410 function trustSone(soneId) {
 411         $.getJSON("trustSone.ajax", { "formPassword" : getFormPassword(), "sone" : soneId }, function(data, textStatus) {
 412                 if ((data != null) && data.success) {
 413                         updateTrustControls(soneId, data.trustValue);
 414                 }
 415         });
 416 }
 417
 418 /**
 419  * Distrusts the Sone with the given ID, i.e. assigns a negative trust value.
 420  *
 421  * @param soneId
 422  *            The ID of the Sone to distrust
 423  */
 424 function distrustSone(soneId) {
 425         $.getJSON("distrustSone.ajax", { "formPassword" : getFormPassword(), "sone" : soneId }, function(data, textStatus) {
 426                 if ((data != null) && data.success) {
 427                         updateTrustControls(soneId, data.trustValue);
 428                 }
 429         });
 430 }
 431
 432 /**
 433  * Untrusts the Sone with the given ID, i.e. removes any trust assignment.
 434  *
 435  * @param soneId
 436  *            The ID of the Sone to untrust
 437  */
 438 function untrustSone(soneId) {
 439         $.getJSON("untrustSone.ajax", { "formPassword" : getFormPassword(), "sone" : soneId }, function(data, textStatus) {
 440                 if ((data != null) && data.success) {
 441                         updateTrustControls(soneId, data.trustValue);
 442                 }
 443         });
 444 }
 445
 446 /**
 447  * Updates the trust controls for all posts and replies of the given Sone,
 448  * according to the given trust value.
 449  *
 450  * @param soneId
 451  *            The ID of the Sone to update all trust controls for
 452  * @param trustValue
 453  *            The trust value for the Sone
 454  */
 455 function updateTrustControls(soneId, trustValue) {
 456         $("#sone .post").each(function() {
 457                 if (getPostAuthor(this) == soneId) {
 458                         getPostElement(this).find(".post-trust").toggleClass("hidden", trustValue != null);
 459                         getPostElement(this).find(".post-distrust").toggleClass("hidden", (trustValue != null) && (trustValue < 0));
 460                         getPostElement(this).find(".post-untrust").toggleClass("hidden", trustValue == null);
 461                 }
 462         });
 463 }
 464
 465 function updateReplyLikes(replyId) {
 466         $.getJSON("getLikes.ajax", { "type": "reply", "reply": replyId }, function(data, textStatus) {
 467                 if ((data != null) && data.success) {
 468                         $("#sone .reply#" + replyId + " .status-line .likes").toggleClass("hidden", data.likes == 0)
 469                         $("#sone .reply#" + replyId + " .status-line .likes span.like-count").text(data.likes);
 470                         $("#sone .reply#" + replyId + " .status-line .likes > span").attr("title", generateSoneList(data.sones));
 471                 }
 472         }, function(xmlHttpRequest, textStatus, error) {
 473                 /* ignore error. */
 474         });
 475 }
 476
 477 /**
 478  * Posts a reply and calls the given callback when the request finishes.
 479  *
 480  * @param postId
 481  *            The ID of the post the reply refers to
 482  * @param text
 483  *            The text to post
 484  * @param callbackFunction
 485  *            The callback function to call when the request finishes (takes 3
 486  *            parameters: success, error, replyId)
 487  */
 488 function postReply(postId, text, callbackFunction) {
 489         $.getJSON("createReply.ajax", { "formPassword" : getFormPassword(), "post" : postId, "text": text }, function(data, textStatus) {
 490                 if (data == null) {
 491                         /* TODO - show error */
 492                         return;
 493                 }
 494                 if (data.success) {
 495                         callbackFunction(true, null, data.reply);
 496                 } else {
 497                         callbackFunction(false, data.error);
 498                 }
 499         }, function(xmlHttpRequest, textStatus, error) {
 500                 /* ignore error. */
 501         });
 502 }
 503
 504 /**
 505  * Requests information about the reply with the given ID.
 506  *
 507  * @param replyId
 508  *            The ID of the reply
 509  * @param callbackFunction
 510  *            A callback function (parameters soneId, soneName, replyTime,
 511  *            replyDisplayTime, text, html)
 512  */
 513 function getReply(replyId, callbackFunction) {
 514         $.getJSON("getReply.ajax", { "reply" : replyId }, function(data, textStatus) {
 515                 if ((data != null) && data.success) {
 516                         callbackFunction(data.soneId, data.soneName, data.time, data.displayTime, data.text, data.html);
 517                 }
 518         }, function(xmlHttpRequest, textStatus, error) {
 519                 /* ignore error. */
 520         });
 521 }
 522
 523 /**
 524  * Ajaxifies the given post by enhancing all eligible elements with AJAX.
 525  *
 526  * @param postElement
 527  *            The post element to ajaxify
 528  */
 529 function ajaxifyPost(postElement) {
 530         $(postElement).find("form").submit(function() {
 531                 return false;
 532         });
 533         $(postElement).find(".create-reply button:submit").click(function() {
 534                 inputField = $(this.form).find(":input:enabled").get(0);
 535                 postId = getPostId(this);
 536                 text = $(inputField).val();
 537                 (function(postId, text, inputField) {
 538                         postReply(postId, text, function(success, error, replyId) {
 539                                 if (success) {
 540                                         $(inputField).val("");
 541                                         loadNewReply(replyId);
 542                                         markPostAsKnown(getPostElement(inputField));
 543                                         $("#sone .post#" + postId + " .create-reply").addClass("hidden");
 544                                 } else {
 545                                         alert(error);
 546                                 }
 547                         });
 548                 })(postId, text, inputField);
 549                 return false;
 550         });
 551
 552         /* replace all “delete” buttons with javascript. */
 553         (function(postElement) {
 554                 getTranslation("WebInterface.Confirmation.DeletePostButton", function(deletePostText) {
 555                         postId = getPostId(postElement);
 556                         enhanceDeletePostButton($(postElement).find(".delete-post button"), postId, deletePostText);
 557                 });
 558         })(postElement);
 559
 560         /* convert all “like” buttons to javascript functions. */
 561         $(postElement).find(".like-post").submit(function() {
 562                 likePost(getPostId(this));
 563                 markPostAsKnown(getPostElement(this));
 564                 return false;
 565         });
 566         $(postElement).find(".unlike-post").submit(function() {
 567                 unlikePost(getPostId(this));
 568                 markPostAsKnown(getPostElement(this));
 569                 return false;
 570         });
 571
 572         /* add “comment” link. */
 573         addCommentLink(getPostId(postElement), postElement, $(postElement).find(".post-status-line .time"));
 574
 575         /* process all replies. */
 576         $(postElement).find(".reply").each(function() {
 577                 ajaxifyReply(this);
 578         });
 579
 580         /* process reply input fields. */
 581         getTranslation("WebInterface.DefaultText.Reply", function(text) {
 582                 $(postElement).find("input.reply-input").each(function() {
 583                         registerInputTextareaSwap(this, text, "text", false, false);
 584                 });
 585         });
 586
 587         /* mark everything as known on click. */
 588         $(postElement).click(function() {
 589                 markPostAsKnown(this);
 590         });
 591
 592         /* hide reply input field. */
 593         $(postElement).find(".create-reply").addClass("hidden");
 594 }
 595
 596 /**
 597  * Ajaxifies the given reply element.
 598  *
 599  * @param replyElement
 600  *            The reply element to ajaxify
 601  */
 602 function ajaxifyReply(replyElement) {
 603         $(replyElement).find(".like-reply").submit(function() {
 604                 likeReply(getReplyId(this));
 605                 markPostAsKnown(getPostElement(this));
 606                 return false;
 607         });
 608         $(replyElement).find(".unlike-reply").submit(function() {
 609                 unlikeReply(getReplyId(this));
 610                 markPostAsKnown(getPostElement(this));
 611                 return false;
 612         });
 613         (function(replyElement) {
 614                 getTranslation("WebInterface.Confirmation.DeleteReplyButton", function(deleteReplyText) {
 615                         $(replyElement).find(".delete-reply button").each(function() {
 616                                 enhanceDeleteReplyButton(this, getReplyId(replyElement), deleteReplyText);
 617                         });
 618                 });
 619         })(replyElement);
 620         addCommentLink(getPostId(replyElement), replyElement, $(replyElement).find(".reply-status-line .time"));
 621
 622         /* mark post and all replies as known on click. */
 623         $(replyElement).click(function() {
 624                 markPostAsKnown(getPostElement(this));
 625         });
 626 }
 627
 628 /**
 629  * Ajaxifies the given notification by replacing the form with AJAX.
 630  *
 631  * @param notification
 632  *            jQuery object representing the notification.
 633  */
 634 function ajaxifyNotification(notification) {
 635         notification.find("form.dismiss").submit(function() {
 636                 return false;
 637         });
 638         notification.find("form.dismiss button").click(function() {
 639                 $.getJSON("dismissNotification.ajax", { "formPassword" : getFormPassword(), "notification" : notification.attr("id") }, function(data, textStatus) {
 640                         /* dismiss in case of error, too. */
 641                         notification.slideUp();
 642                 }, function(xmlHttpRequest, textStatus, error) {
 643                         /* ignore error. */
 644                 });
 645         });
 646         return notification;
 647 }
 648
 649 function getStatus() {
 650         $.getJSON("getStatus.ajax", {"loadAllSones": isKnownSonesPage()}, function(data, textStatus) {
 651                 if ((data != null) && data.success) {
 652                         /* process Sone information. */
 653                         $.each(data.sones, function(index, value) {
 654                                 updateSoneStatus(value.id, value.name, value.status, value.modified, value.locked, value.lastUpdated);
 655                         });
 656                         /* process notifications. */
 657                         $.each(data.notifications, function(index, value) {
 658                                 oldNotification = $("#sone #notification-area .notification#" + value.id);
 659                                 notification = ajaxifyNotification(createNotification(value.id, value.text, value.dismissable)).hide();
 660                                 if (oldNotification.length != 0) {
 661                                         oldNotification.replaceWith(notification.show());
 662                                 } else {
 663                                         $("#sone #notification-area").append(notification);
 664                                         notification.slideDown();
 665                                 }
 666                                 setActivity();
 667                         });
 668                         $.each(data.removedNotifications, function(index, value) {
 669                                 $("#sone #notification-area .notification#" + value.id).slideUp();
 670                         });
 671                         /* process new posts. */
 672                         $.each(data.newPosts, function(index, value) {
 673                                 loadNewPost(value);
 674                         });
 675                         /* process new replies. */
 676                         $.each(data.newReplies, function(index, value) {
 677                                 loadNewReply(value);
 678                         });
 679                         /* do it again in 5 seconds. */
 680                         setTimeout(getStatus, 5000);
 681                 } else {
 682                         /* data.success was false, wait 30 seconds. */
 683                         setTimeout(getStatus, 30000);
 684                 }
 685         }, function(xmlHttpRequest, textStatus, error) {
 686                 /* something really bad happend, wait a minute. */
 687                 setTimeout(getStatus, 60000);
 688         })
 689 }
 690
 691 /**
 692  * Returns the content of the page-id attribute.
 693  *
 694  * @returns The page ID
 695  */
 696 function getPageId() {
 697         return $("#sone .page-id").text();
 698 }
 699
 700 /**
 701  * Returns whether the current page is the index page.
 702  *
 703  * @returns {Boolean} <code>true</code> if the current page is the index page,
 704  *          <code>false</code> otherwise
 705  */
 706 function isIndexPage() {
 707         return getPageId() == "index";
 708 }
 709
 710 /**
 711  * Returns whether the current page is a “view Sone” page.
 712  *
 713  * @returns {Boolean} <code>true</code> if the current page is a “view Sone”
 714  *          page, <code>false</code> otherwise
 715  */
 716 function isViewSonePage() {
 717         return getPageId() == "view-sone";
 718 }
 719
 720 /**
 721  * Returns the ID of the currently shown Sone. This will only return a sensible
 722  * value if isViewSonePage() returns <code>true</code>.
 723  *
 724  * @returns The ID of the currently shown Sone
 725  */
 726 function getShownSoneId() {
 727         return $("#sone .sone-id").text();
 728 }
 729
 730 /**
 731  * Returns whether the current page is a “view post” page.
 732  *
 733  * @returns {Boolean} <code>true</code> if the current page is a “view post”
 734  *          page, <code>false</code> otherwise
 735  */
 736 function isViewPostPage() {
 737         return getPageId() == "view-post";
 738 }
 739
 740 /**
 741  * Returns the ID of the currently shown post. This will only return a sensible
 742  * value if isViewPostPage() returns <code>true</code>.
 743  *
 744  * @returns The ID of the currently shown post
 745  */
 746 function getShownPostId() {
 747         return $("#sone .post-id").text();
 748 }
 749
 750 /**
 751  * Returns whether the current page is the “known Sones” page.
 752  *
 753  * @returns {Boolean} <code>true</code> if the current page is the “known
 754  *          Sones” page, <code>false</code> otherwise
 755  */
 756 function isKnownSonesPage() {
 757         return getPageId() == "known-sones";
 758 }
 759
 760 /**
 761  * Returns whether a post with the given ID exists on the current page.
 762  *
 763  * @param postId
 764  *            The post ID to check for
 765  * @returns {Boolean} <code>true</code> if a post with the given ID already
 766  *          exists on the page, <code>false</code> otherwise
 767  */
 768 function hasPost(postId) {
 769         return $(".post#" + postId).length > 0;
 770 }
 771
 772 /**
 773  * Returns whether a reply with the given ID exists on the current page.
 774  *
 775  * @param replyId
 776  *            The reply ID to check for
 777  * @returns {Boolean} <code>true</code> if a reply with the given ID already
 778  *          exists on the page, <code>false</code> otherwise
 779  */
 780 function hasReply(replyId) {
 781         return $("#sone .reply#" + replyId).length > 0;
 782 }
 783
 784 function loadNewPost(postId) {
 785         if (hasPost(postId)) {
 786                 return;
 787         }
 788         $.getJSON("getPost.ajax", { "post" : postId }, function(data, textStatus) {
 789                 if ((data != null) && data.success) {
 790                         if (hasPost(data.post.id)) {
 791                                 return;
 792                         }
 793                         if (!isIndexPage() && !(isViewSonePage() && ((getShownSoneId() == data.post.sone) || (getShownSoneId() == data.post.recipient)))) {
 794                                 return;
 795                         }
 796                         var firstOlderPost = null;
 797                         $("#sone .post").each(function() {
 798                                 if (getPostTime(this) < data.post.time) {
 799                                         firstOlderPost = $(this);
 800                                         return false;
 801                                 }
 802                         });
 803                         newPost = $(data.post.html).addClass("hidden");
 804                         if (firstOlderPost != null) {
 805                                 newPost.insertBefore(firstOlderPost);
 806                         } else {
 807                                 $("#sone #posts").append(newPost);
 808                         }
 809                         ajaxifyPost(newPost);
 810                         newPost.slideDown();
 811                         setActivity();
 812                 }
 813         });
 814 }
 815
 816 function loadNewReply(replyId) {
 817         if (hasReply(replyId)) {
 818                 return;
 819         }
 820         $.getJSON("getReply.ajax", { "reply": replyId }, function(data, textStatus) {
 821                 /* find post. */
 822                 if ((data != null) && data.success) {
 823                         if (hasReply(data.reply.id)) {
 824                                 return;
 825                         }
 826                         $("#sone .post#" + data.reply.postId).each(function() {
 827                                 var firstNewerReply = null;
 828                                 $(this).find(".replies .reply").each(function() {
 829                                         if (getReplyTime(this) > data.reply.time) {
 830                                                 firstNewerReply = $(this);
 831                                                 return false;
 832                                         }
 833                                 });
 834                                 newReply = $(data.reply.html).addClass("hidden");
 835                                 if (firstNewerReply != null) {
 836                                         newReply.insertBefore(firstNewerReply);
 837                                 } else {
 838                                         if ($(this).find(".replies .create-reply")) {
 839                                                 $(this).find(".replies .create-reply").before(newReply);
 840                                         } else {
 841                                                 $(this).find(".replies").append(newReply);
 842                                         }
 843                                 }
 844                                 ajaxifyReply(newReply);
 845                                 newReply.slideDown();
 846                                 setActivity();
 847                                 return false;
 848                         });
 849                 }
 850         });
 851 }
 852
 853 function markPostAsKnown(postElements) {
 854         $(postElements).each(function() {
 855                 postElement = this;
 856                 if ($(postElement).hasClass("new")) {
 857                         (function(postElement) {
 858                                 $.getJSON("markPostAsKnown.ajax", {"formPassword": getFormPassword(), "post": getPostId(postElement)}, function(data, textStatus) {
 859                                         $(postElement).removeClass("new");
 860                                 });
 861                         })(postElement);
 862                 }
 863         });
 864         markReplyAsKnown($(postElements).find(".reply"));
 865 }
 866
 867 function markReplyAsKnown(replyElements) {
 868         $(replyElements).each(function() {
 869                 replyElement = this;
 870                 if ($(replyElement).hasClass("new")) {
 871                         (function(replyElement) {
 872                                 $.getJSON("markReplyAsKnown.ajax", {"formPassword": getFormPassword(), "reply": getReplyId(replyElement)}, function(data, textStatus) {
 873                                         $(replyElement).removeClass("new");
 874                                 });
 875                         })(replyElement);
 876                 }
 877         });
 878 }
 879
 880 function resetActivity() {
 881         title = document.title;
 882         if (title.indexOf('(') == 0) {
 883                 document.title = title.substr(title.indexOf(' ') + 1);
 884         }
 885 }
 886
 887 function setActivity() {
 888         if (!focus) {
 889                 title = document.title;
 890                 if (title.indexOf('(') != 0) {
 891                         document.title = "(!) " + title;
 892                 }
 893         }
 894 }
 895
 896 /**
 897  * Creates a new notification.
 898  *
 899  * @param id
 900  *            The ID of the notificaiton
 901  * @param text
 902  *            The text of the notification
 903  * @param dismissable
 904  *            <code>true</code> if the notification can be dismissed by the
 905  *            user
 906  */
 907 function createNotification(id, text, dismissable) {
 908         notification = $("<div></div>").addClass("notification").attr("id", id);
 909         if (dismissable) {
 910                 dismissForm = $("#sone #notification-area #notification-dismiss-template").clone().removeClass("hidden").removeAttr("id")
 911                 dismissForm.find("input[name=notification]").val(id);
 912                 notification.append(dismissForm);
 913         }
 914         notification.append(text);
 915         return notification;
 916 }
 917
 918 /**
 919  * Shows the details of the notification with the given ID.
 920  *
 921  * @param notificationId
 922  *            The ID of the notification
 923  */
 924 function showNotificationDetails(notificationId) {
 925         $("#sone .notification#" + notificationId + " .text").show();
 926         $("#sone .notification#" + notificationId + " .short-text").hide();
 927 }
 928
 929 //
 930 // EVERYTHING BELOW HERE IS EXECUTED AFTER LOADING THE PAGE
 931 //
 932
 933 var focus = true;
 934
 935 $(document).ready(function() {
 936
 937         /* this initializes the status update input field. */
 938         getTranslation("WebInterface.DefaultText.StatusUpdate", function(defaultText) {
 939                 registerInputTextareaSwap("#sone #update-status .status-input", defaultText, "text", false, false);
 940                 $("#sone #update-status").submit(function() {
 941                         if ($(this).find(":input.default:enabled").length > 0) {
 942                                 return false;
 943                         }
 944                         text = $(this).find(":input:enabled").val();
 945                         $.getJSON("createPost.ajax", { "formPassword": getFormPassword(), "text": text }, function(data, textStatus) {
 946                                 if ((data != null) && data.success) {
 947                                         loadNewPost(data.postId);
 948                                 }
 949                         });
 950                         $(this).find(":input:enabled").val("").blur();
 951                         return false;
 952                 });
 953         });
 954
 955         /* ajaxify input field on “view Sone” page. */
 956         getTranslation("WebInterface.DefaultText.Message", function(defaultText) {
 957                 registerInputTextareaSwap("#sone #post-message input[name=text]", defaultText, "text", false, false);
 958                 $("#sone #post-message").submit(function() {
 959                         text = $(this).find(":input:enabled").val();
 960                         $.getJSON("createPost.ajax", { "formPassword": getFormPassword(), "recipient": getShownSoneId(), "text": text }, function(data, textStatus) {
 961                                 if ((data != null) && data.success) {
 962                                         loadNewPost(data.postId);
 963                                 }
 964                         });
 965                         $(this).find(":input:enabled").val("").blur();
 966                         return false;
 967                 });
 968         });
 969
 970         /* Ajaxifies all posts. */
 971         /* calling getTranslation here will cache the necessary values. */
 972         getTranslation("WebInterface.Confirmation.DeletePostButton", function(text) {
 973                 getTranslation("WebInterface.Confirmation.DeleteReplyButton", function(text) {
 974                         getTranslation("WebInterface.DefaultText.Reply", function(text) {
 975                                 $("#sone .post").each(function() {
 976                                         ajaxifyPost(this);
 977                                 });
 978                         });
 979                 });
 980         });
 981
 982         /* hides all replies but the latest two. */
 983         if (!isViewPostPage()) {
 984                 getTranslation("WebInterface.ClickToShow.Replies", function(text) {
 985                         $("#sone .post .replies").each(function() {
 986                                 allReplies = $(this).find(".reply");
 987                                 if (allReplies.length > 2) {
 988                                         newHidden = false;
 989                                         for (replyIndex = 0; replyIndex < (allReplies.length - 2); ++replyIndex) {
 990                                                 $(allReplies[replyIndex]).addClass("hidden");
 991                                                 newHidden |= $(allReplies[replyIndex]).hasClass("new");
 992                                         }
 993                                         clickToShowElement = $("<div></div>").addClass("click-to-show");
 994                                         if (newHidden) {
 995                                                 clickToShowElement.addClass("new");
 996                                         }
 997                                         (function(clickToShowElement, allReplies, text) {
 998                                                 clickToShowElement.text(text);
 999                                                 clickToShowElement.click(function() {
1000                                                         allReplies.removeClass("hidden");
1001                                                         clickToShowElement.addClass("hidden");
1002                                                 });
1003                                         })(clickToShowElement, allReplies, text);
1004                                         $(allReplies[0]).before(clickToShowElement);
1005                                 }
1006                         });
1007                 });
1008         }
1009
1010         /*
1011          * convert all “follow”, “unfollow”, “lock”, and “unlock” links to something
1012          * nicer.
1013          */
1014         $("#sone .follow").submit(function() {
1015                 var followElement = this;
1016                 $.getJSON("followSone.ajax", { "sone": getSoneId(this), "formPassword": getFormPassword() }, function() {
1017                         $(followElement).addClass("hidden");
1018                         $(followElement).parent().find(".unfollow").removeClass("hidden");
1019                 });
1020                 return false;
1021         });
1022         $("#sone .unfollow").submit(function() {
1023                 var unfollowElement = this;
1024                 $.getJSON("unfollowSone.ajax", { "sone": getSoneId(this), "formPassword": getFormPassword() }, function() {
1025                         $(unfollowElement).addClass("hidden");
1026                         $(unfollowElement).parent().find(".follow").removeClass("hidden");
1027                 });
1028                 return false;
1029         });
1030         $("#sone .lock").submit(function() {
1031                 var lockElement = this;
1032                 $.getJSON("lockSone.ajax", { "sone" : getSoneId(this), "formPassword" : getFormPassword() }, function() {
1033                         $(lockElement).addClass("hidden");
1034                         $(lockElement).parent().find(".unlock").removeClass("hidden");
1035                 });
1036                 return false;
1037         });
1038         $("#sone .unlock").submit(function() {
1039                 var unlockElement = this;
1040                 $.getJSON("unlockSone.ajax", { "sone" : getSoneId(this), "formPassword" : getFormPassword() }, function() {
1041                         $(unlockElement).addClass("hidden");
1042                         $(unlockElement).parent().find(".lock").removeClass("hidden");
1043                 });
1044                 return false;
1045         });
1046
1047         /* process all existing notifications, ajaxify dismiss buttons. */
1048         $("#sone #notification-area .notification").each(function() {
1049                 ajaxifyNotification($(this));
1050         });
1051
1052         /* activate status polling. */
1053         setTimeout(getStatus, 5000);
1054
1055         /* reset activity counter when the page has focus. */
1056         $(window).focus(function() {
1057                 focus = true;
1058                 resetActivity();
1059         }).blur(function() {
1060                 focus = false;
1061         })
1062
1063 });