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 function getReplyElement(element) {
 307         return $(element).closest(".reply");
 308 }
 309
 310 function getReplyId(element) {
 311         return getReplyElement(element).attr("id");
 312 }
 313
 314 function getReplyTime(element) {
 315         return getReplyElement(element).find(".reply-time").text();
 316 }
 317
 318 function likePost(postId) {
 319         $.getJSON("like.ajax", { "type": "post", "post" : postId, "formPassword": getFormPassword() }, function(data, textStatus) {
 320                 if ((data == null) || !data.success) {
 321                         return;
 322                 }
 323                 $("#sone .post#" + postId + " > .inner-part > .status-line .like").addClass("hidden");
 324                 $("#sone .post#" + postId + " > .inner-part > .status-line .unlike").removeClass("hidden");
 325                 updatePostLikes(postId);
 326         }, function(xmlHttpRequest, textStatus, error) {
 327                 /* ignore error. */
 328         });
 329 }
 330
 331 function unlikePost(postId) {
 332         $.getJSON("unlike.ajax", { "type": "post", "post" : postId, "formPassword": getFormPassword() }, function(data, textStatus) {
 333                 if ((data == null) || !data.success) {
 334                         return;
 335                 }
 336                 $("#sone .post#" + postId + " > .inner-part > .status-line .unlike").addClass("hidden");
 337                 $("#sone .post#" + postId + " > .inner-part > .status-line .like").removeClass("hidden");
 338                 updatePostLikes(postId);
 339         }, function(xmlHttpRequest, textStatus, error) {
 340                 /* ignore error. */
 341         });
 342 }
 343
 344 function updatePostLikes(postId) {
 345         $.getJSON("getLikes.ajax", { "type": "post", "post": postId }, function(data, textStatus) {
 346                 if ((data != null) && data.success) {
 347                         $("#sone .post#" + postId + " > .inner-part > .status-line .likes").toggleClass("hidden", data.likes == 0)
 348                         $("#sone .post#" + postId + " > .inner-part > .status-line .likes span.like-count").text(data.likes);
 349                         $("#sone .post#" + postId + " > .inner-part > .status-line .likes > span").attr("title", generateSoneList(data.sones));
 350                 }
 351         }, function(xmlHttpRequest, textStatus, error) {
 352                 /* ignore error. */
 353         });
 354 }
 355
 356 function likeReply(replyId) {
 357         $.getJSON("like.ajax", { "type": "reply", "reply" : replyId, "formPassword": getFormPassword() }, function(data, textStatus) {
 358                 if ((data == null) || !data.success) {
 359                         return;
 360                 }
 361                 $("#sone .reply#" + replyId + " .status-line .like").addClass("hidden");
 362                 $("#sone .reply#" + replyId + " .status-line .unlike").removeClass("hidden");
 363                 updateReplyLikes(replyId);
 364         }, function(xmlHttpRequest, textStatus, error) {
 365                 /* ignore error. */
 366         });
 367 }
 368
 369 function unlikeReply(replyId) {
 370         $.getJSON("unlike.ajax", { "type": "reply", "reply" : replyId, "formPassword": getFormPassword() }, function(data, textStatus) {
 371                 if ((data == null) || !data.success) {
 372                         return;
 373                 }
 374                 $("#sone .reply#" + replyId + " .status-line .unlike").addClass("hidden");
 375                 $("#sone .reply#" + replyId + " .status-line .like").removeClass("hidden");
 376                 updateReplyLikes(replyId);
 377         }, function(xmlHttpRequest, textStatus, error) {
 378                 /* ignore error. */
 379         });
 380 }
 381
 382 function updateReplyLikes(replyId) {
 383         $.getJSON("getLikes.ajax", { "type": "reply", "reply": replyId }, function(data, textStatus) {
 384                 if ((data != null) && data.success) {
 385                         $("#sone .reply#" + replyId + " .status-line .likes").toggleClass("hidden", data.likes == 0)
 386                         $("#sone .reply#" + replyId + " .status-line .likes span.like-count").text(data.likes);
 387                         $("#sone .reply#" + replyId + " .status-line .likes > span").attr("title", generateSoneList(data.sones));
 388                 }
 389         }, function(xmlHttpRequest, textStatus, error) {
 390                 /* ignore error. */
 391         });
 392 }
 393
 394 /**
 395  * Posts a reply and calls the given callback when the request finishes.
 396  *
 397  * @param postId
 398  *            The ID of the post the reply refers to
 399  * @param text
 400  *            The text to post
 401  * @param callbackFunction
 402  *            The callback function to call when the request finishes (takes 3
 403  *            parameters: success, error, replyId)
 404  */
 405 function postReply(postId, text, callbackFunction) {
 406         $.getJSON("createReply.ajax", { "formPassword" : getFormPassword(), "post" : postId, "text": text }, function(data, textStatus) {
 407                 if (data == null) {
 408                         /* TODO - show error */
 409                         return;
 410                 }
 411                 if (data.success) {
 412                         callbackFunction(true, null, data.reply);
 413                 } else {
 414                         callbackFunction(false, data.error);
 415                 }
 416         }, function(xmlHttpRequest, textStatus, error) {
 417                 /* ignore error. */
 418         });
 419 }
 420
 421 /**
 422  * Requests information about the reply with the given ID.
 423  *
 424  * @param replyId
 425  *            The ID of the reply
 426  * @param callbackFunction
 427  *            A callback function (parameters soneId, soneName, replyTime,
 428  *            replyDisplayTime, text, html)
 429  */
 430 function getReply(replyId, callbackFunction) {
 431         $.getJSON("getReply.ajax", { "reply" : replyId }, function(data, textStatus) {
 432                 if ((data != null) && data.success) {
 433                         callbackFunction(data.soneId, data.soneName, data.time, data.displayTime, data.text, data.html);
 434                 }
 435         }, function(xmlHttpRequest, textStatus, error) {
 436                 /* ignore error. */
 437         });
 438 }
 439
 440 /**
 441  * Ajaxifies the given post by enhancing all eligible elements with AJAX.
 442  *
 443  * @param postElement
 444  *            The post element to ajaxify
 445  */
 446 function ajaxifyPost(postElement) {
 447         $(postElement).find("form").submit(function() {
 448                 return false;
 449         });
 450         $(postElement).find(".create-reply button:submit").click(function() {
 451                 inputField = $(this.form).find(":input:enabled").get(0);
 452                 postId = getPostId(this);
 453                 text = $(inputField).val();
 454                 (function(postId, text, inputField) {
 455                         postReply(postId, text, function(success, error, replyId) {
 456                                 if (success) {
 457                                         $(inputField).val("");
 458                                         loadNewReply(replyId);
 459                                         markPostAsKnown(getPostElement(inputField));
 460                                         $("#sone .post#" + postId + " .create-reply").addClass("hidden");
 461                                 } else {
 462                                         alert(error);
 463                                 }
 464                         });
 465                 })(postId, text, inputField);
 466                 return false;
 467         });
 468
 469         /* replace all “delete” buttons with javascript. */
 470         (function(postElement) {
 471                 getTranslation("WebInterface.Confirmation.DeletePostButton", function(deletePostText) {
 472                         postId = getPostId(postElement);
 473                         enhanceDeletePostButton($(postElement).find(".delete-post button"), postId, deletePostText);
 474                 });
 475         })(postElement);
 476
 477         /* convert all “like” buttons to javascript functions. */
 478         $(postElement).find(".like-post").submit(function() {
 479                 likePost(getPostId(this));
 480                 markPostAsKnown(getPostElement(this));
 481                 return false;
 482         });
 483         $(postElement).find(".unlike-post").submit(function() {
 484                 unlikePost(getPostId(this));
 485                 markPostAsKnown(getPostElement(this));
 486                 return false;
 487         });
 488
 489         /* add “comment” link. */
 490         addCommentLink(getPostId(postElement), postElement, $(postElement).find(".post-status-line .time"));
 491
 492         /* process all replies. */
 493         $(postElement).find(".reply").each(function() {
 494                 ajaxifyReply(this);
 495         });
 496
 497         /* process reply input fields. */
 498         getTranslation("WebInterface.DefaultText.Reply", function(text) {
 499                 $(postElement).find("input.reply-input").each(function() {
 500                         registerInputTextareaSwap(this, text, "text", false, false);
 501                 });
 502         });
 503
 504         /* mark everything as known on click. */
 505         $(postElement).click(function() {
 506                 markPostAsKnown(this);
 507         });
 508
 509         /* hide reply input field. */
 510         $(postElement).find(".create-reply").addClass("hidden");
 511 }
 512
 513 /**
 514  * Ajaxifies the given reply element.
 515  *
 516  * @param replyElement
 517  *            The reply element to ajaxify
 518  */
 519 function ajaxifyReply(replyElement) {
 520         $(replyElement).find(".like-reply").submit(function() {
 521                 likeReply(getReplyId(this));
 522                 markPostAsKnown(getPostElement(this));
 523                 return false;
 524         });
 525         $(replyElement).find(".unlike-reply").submit(function() {
 526                 unlikeReply(getReplyId(this));
 527                 markPostAsKnown(getPostElement(this));
 528                 return false;
 529         });
 530         (function(replyElement) {
 531                 getTranslation("WebInterface.Confirmation.DeleteReplyButton", function(deleteReplyText) {
 532                         $(replyElement).find(".delete-reply button").each(function() {
 533                                 enhanceDeleteReplyButton(this, getReplyId(replyElement), deleteReplyText);
 534                         });
 535                 });
 536         })(replyElement);
 537         addCommentLink(getPostId(replyElement), replyElement, $(replyElement).find(".reply-status-line .time"));
 538
 539         /* mark post and all replies as known on click. */
 540         $(replyElement).click(function() {
 541                 markPostAsKnown(getPostElement(this));
 542         });
 543 }
 544
 545 /**
 546  * Ajaxifies the given notification by replacing the form with AJAX.
 547  *
 548  * @param notification
 549  *            jQuery object representing the notification.
 550  */
 551 function ajaxifyNotification(notification) {
 552         notification.find("form.dismiss").submit(function() {
 553                 return false;
 554         });
 555         notification.find("form.dismiss button").click(function() {
 556                 $.getJSON("dismissNotification.ajax", { "formPassword" : getFormPassword(), "notification" : notification.attr("id") }, function(data, textStatus) {
 557                         /* dismiss in case of error, too. */
 558                         notification.slideUp();
 559                 }, function(xmlHttpRequest, textStatus, error) {
 560                         /* ignore error. */
 561                 });
 562         });
 563         return notification;
 564 }
 565
 566 function getStatus() {
 567         $.getJSON("getStatus.ajax", {"loadAllSones": isKnownSonesPage()}, function(data, textStatus) {
 568                 if ((data != null) && data.success) {
 569                         /* process Sone information. */
 570                         $.each(data.sones, function(index, value) {
 571                                 updateSoneStatus(value.id, value.name, value.status, value.modified, value.locked, value.lastUpdated);
 572                         });
 573                         /* process notifications. */
 574                         $.each(data.notifications, function(index, value) {
 575                                 oldNotification = $("#sone #notification-area .notification#" + value.id);
 576                                 notification = ajaxifyNotification(createNotification(value.id, value.text, value.dismissable)).hide();
 577                                 if (oldNotification.length != 0) {
 578                                         oldNotification.replaceWith(notification.show());
 579                                 } else {
 580                                         $("#sone #notification-area").append(notification);
 581                                         notification.slideDown();
 582                                 }
 583                                 setActivity();
 584                         });
 585                         $.each(data.removedNotifications, function(index, value) {
 586                                 $("#sone #notification-area .notification#" + value.id).slideUp();
 587                         });
 588                         /* process new posts. */
 589                         $.each(data.newPosts, function(index, value) {
 590                                 loadNewPost(value);
 591                         });
 592                         /* process new replies. */
 593                         $.each(data.newReplies, function(index, value) {
 594                                 loadNewReply(value);
 595                         });
 596                         /* do it again in 5 seconds. */
 597                         setTimeout(getStatus, 5000);
 598                 } else {
 599                         /* data.success was false, wait 30 seconds. */
 600                         setTimeout(getStatus, 30000);
 601                 }
 602         }, function(xmlHttpRequest, textStatus, error) {
 603                 /* something really bad happend, wait a minute. */
 604                 setTimeout(getStatus, 60000);
 605         })
 606 }
 607
 608 /**
 609  * Returns the content of the page-id attribute.
 610  *
 611  * @returns The page ID
 612  */
 613 function getPageId() {
 614         return $("#sone .page-id").text();
 615 }
 616
 617 /**
 618  * Returns whether the current page is the index page.
 619  *
 620  * @returns {Boolean} <code>true</code> if the current page is the index page,
 621  *          <code>false</code> otherwise
 622  */
 623 function isIndexPage() {
 624         return getPageId() == "index";
 625 }
 626
 627 /**
 628  * Returns whether the current page is a “view Sone” page.
 629  *
 630  * @returns {Boolean} <code>true</code> if the current page is a “view Sone”
 631  *          page, <code>false</code> otherwise
 632  */
 633 function isViewSonePage() {
 634         return getPageId() == "view-sone";
 635 }
 636
 637 /**
 638  * Returns the ID of the currently shown Sone. This will only return a sensible
 639  * value if isViewSonePage() returns <code>true</code>.
 640  *
 641  * @returns The ID of the currently shown Sone
 642  */
 643 function getShownSoneId() {
 644         return $("#sone .sone-id").text();
 645 }
 646
 647 /**
 648  * Returns whether the current page is a “view post” page.
 649  *
 650  * @returns {Boolean} <code>true</code> if the current page is a “view post”
 651  *          page, <code>false</code> otherwise
 652  */
 653 function isViewPostPage() {
 654         return getPageId() == "view-post";
 655 }
 656
 657 /**
 658  * Returns the ID of the currently shown post. This will only return a sensible
 659  * value if isViewPostPage() returns <code>true</code>.
 660  *
 661  * @returns The ID of the currently shown post
 662  */
 663 function getShownPostId() {
 664         return $("#sone .post-id").text();
 665 }
 666
 667 /**
 668  * Returns whether the current page is the “known Sones” page.
 669  *
 670  * @returns {Boolean} <code>true</code> if the current page is the “known
 671  *          Sones” page, <code>false</code> otherwise
 672  */
 673 function isKnownSonesPage() {
 674         return getPageId() == "known-sones";
 675 }
 676
 677 /**
 678  * Returns whether a post with the given ID exists on the current page.
 679  *
 680  * @param postId
 681  *            The post ID to check for
 682  * @returns {Boolean} <code>true</code> if a post with the given ID already
 683  *          exists on the page, <code>false</code> otherwise
 684  */
 685 function hasPost(postId) {
 686         return $(".post#" + postId).length > 0;
 687 }
 688
 689 /**
 690  * Returns whether a reply with the given ID exists on the current page.
 691  *
 692  * @param replyId
 693  *            The reply ID to check for
 694  * @returns {Boolean} <code>true</code> if a reply with the given ID already
 695  *          exists on the page, <code>false</code> otherwise
 696  */
 697 function hasReply(replyId) {
 698         return $("#sone .reply#" + replyId).length > 0;
 699 }
 700
 701 function loadNewPost(postId) {
 702         if (hasPost(postId)) {
 703                 return;
 704         }
 705         $.getJSON("getPost.ajax", { "post" : postId }, function(data, textStatus) {
 706                 if ((data != null) && data.success) {
 707                         if (hasPost(data.post.id)) {
 708                                 return;
 709                         }
 710                         if (!isIndexPage() && !(isViewSonePage() && ((getShownSoneId() == data.post.sone) || (getShownSoneId() == data.post.recipient)))) {
 711                                 return;
 712                         }
 713                         var firstOlderPost = null;
 714                         $("#sone .post").each(function() {
 715                                 if (getPostTime(this) < data.post.time) {
 716                                         firstOlderPost = $(this);
 717                                         return false;
 718                                 }
 719                         });
 720                         newPost = $(data.post.html).addClass("hidden");
 721                         if (firstOlderPost != null) {
 722                                 newPost.insertBefore(firstOlderPost);
 723                         } else {
 724                                 $("#sone #posts").append(newPost);
 725                         }
 726                         ajaxifyPost(newPost);
 727                         newPost.slideDown();
 728                         setActivity();
 729                 }
 730         });
 731 }
 732
 733 function loadNewReply(replyId) {
 734         if (hasReply(replyId)) {
 735                 return;
 736         }
 737         $.getJSON("getReply.ajax", { "reply": replyId }, function(data, textStatus) {
 738                 /* find post. */
 739                 if ((data != null) && data.success) {
 740                         if (hasReply(data.reply.id)) {
 741                                 return;
 742                         }
 743                         $("#sone .post#" + data.reply.postId).each(function() {
 744                                 var firstNewerReply = null;
 745                                 $(this).find(".replies .reply").each(function() {
 746                                         if (getReplyTime(this) > data.reply.time) {
 747                                                 firstNewerReply = $(this);
 748                                                 return false;
 749                                         }
 750                                 });
 751                                 newReply = $(data.reply.html).addClass("hidden");
 752                                 if (firstNewerReply != null) {
 753                                         newReply.insertBefore(firstNewerReply);
 754                                 } else {
 755                                         if ($(this).find(".replies .create-reply")) {
 756                                                 $(this).find(".replies .create-reply").before(newReply);
 757                                         } else {
 758                                                 $(this).find(".replies").append(newReply);
 759                                         }
 760                                 }
 761                                 ajaxifyReply(newReply);
 762                                 newReply.slideDown();
 763                                 setActivity();
 764                                 return false;
 765                         });
 766                 }
 767         });
 768 }
 769
 770 function markPostAsKnown(postElements) {
 771         $(postElements).each(function() {
 772                 postElement = this;
 773                 if ($(postElement).hasClass("new")) {
 774                         (function(postElement) {
 775                                 $.getJSON("markPostAsKnown.ajax", {"formPassword": getFormPassword(), "post": getPostId(postElement)}, function(data, textStatus) {
 776                                         $(postElement).removeClass("new");
 777                                 });
 778                         })(postElement);
 779                 }
 780         });
 781         markReplyAsKnown($(postElements).find(".reply"));
 782 }
 783
 784 function markReplyAsKnown(replyElements) {
 785         $(replyElements).each(function() {
 786                 replyElement = this;
 787                 if ($(replyElement).hasClass("new")) {
 788                         (function(replyElement) {
 789                                 $.getJSON("markReplyAsKnown.ajax", {"formPassword": getFormPassword(), "reply": getReplyId(replyElement)}, function(data, textStatus) {
 790                                         $(replyElement).removeClass("new");
 791                                 });
 792                         })(replyElement);
 793                 }
 794         });
 795 }
 796
 797 function resetActivity() {
 798         title = document.title;
 799         if (title.indexOf('(') == 0) {
 800                 document.title = title.substr(title.indexOf(' ') + 1);
 801         }
 802 }
 803
 804 function setActivity() {
 805         if (!focus) {
 806                 title = document.title;
 807                 if (title.indexOf('(') != 0) {
 808                         document.title = "(!) " + title;
 809                 }
 810         }
 811 }
 812
 813 /**
 814  * Creates a new notification.
 815  *
 816  * @param id
 817  *            The ID of the notificaiton
 818  * @param text
 819  *            The text of the notification
 820  * @param dismissable
 821  *            <code>true</code> if the notification can be dismissed by the
 822  *            user
 823  */
 824 function createNotification(id, text, dismissable) {
 825         notification = $("<div></div>").addClass("notification").attr("id", id);
 826         if (dismissable) {
 827                 dismissForm = $("#sone #notification-area #notification-dismiss-template").clone().removeClass("hidden").removeAttr("id")
 828                 dismissForm.find("input[name=notification]").val(id);
 829                 notification.append(dismissForm);
 830         }
 831         notification.append(text);
 832         return notification;
 833 }
 834
 835 /**
 836  * Shows the details of the notification with the given ID.
 837  *
 838  * @param notificationId
 839  *            The ID of the notification
 840  */
 841 function showNotificationDetails(notificationId) {
 842         $("#sone .notification#" + notificationId + " .text").show();
 843         $("#sone .notification#" + notificationId + " .short-text").hide();
 844 }
 845
 846 //
 847 // EVERYTHING BELOW HERE IS EXECUTED AFTER LOADING THE PAGE
 848 //
 849
 850 var focus = true;
 851
 852 $(document).ready(function() {
 853
 854         /* this initializes the status update input field. */
 855         getTranslation("WebInterface.DefaultText.StatusUpdate", function(defaultText) {
 856                 registerInputTextareaSwap("#sone #update-status .status-input", defaultText, "text", false, false);
 857                 $("#sone #update-status").submit(function() {
 858                         if ($(this).find(":input.default:enabled").length > 0) {
 859                                 return false;
 860                         }
 861                         text = $(this).find(":input:enabled").val();
 862                         $.getJSON("createPost.ajax", { "formPassword": getFormPassword(), "text": text }, function(data, textStatus) {
 863                                 if ((data != null) && data.success) {
 864                                         loadNewPost(data.postId);
 865                                 }
 866                         });
 867                         $(this).find(":input:enabled").val("").blur();
 868                         return false;
 869                 });
 870         });
 871
 872         /* ajaxify input field on “view Sone” page. */
 873         getTranslation("WebInterface.DefaultText.Message", function(defaultText) {
 874                 registerInputTextareaSwap("#sone #post-message input[name=text]", defaultText, "text", false, false);
 875                 $("#sone #post-message").submit(function() {
 876                         text = $(this).find(":input:enabled").val();
 877                         $.getJSON("createPost.ajax", { "formPassword": getFormPassword(), "recipient": getShownSoneId(), "text": text }, function(data, textStatus) {
 878                                 if ((data != null) && data.success) {
 879                                         loadNewPost(data.postId);
 880                                 }
 881                         });
 882                         $(this).find(":input:enabled").val("").blur();
 883                         return false;
 884                 });
 885         });
 886
 887         /* Ajaxifies all posts. */
 888         /* calling getTranslation here will cache the necessary values. */
 889         getTranslation("WebInterface.Confirmation.DeletePostButton", function(text) {
 890                 getTranslation("WebInterface.Confirmation.DeleteReplyButton", function(text) {
 891                         getTranslation("WebInterface.DefaultText.Reply", function(text) {
 892                                 $("#sone .post").each(function() {
 893                                         ajaxifyPost(this);
 894                                 });
 895                         });
 896                 });
 897         });
 898
 899         /* hides all replies but the latest two. */
 900         if (!isViewPostPage()) {
 901                 getTranslation("WebInterface.ClickToShow.Replies", function(text) {
 902                         $("#sone .post .replies").each(function() {
 903                                 allReplies = $(this).find(".reply");
 904                                 if (allReplies.length > 2) {
 905                                         newHidden = false;
 906                                         for (replyIndex = 0; replyIndex < (allReplies.length - 2); ++replyIndex) {
 907                                                 $(allReplies[replyIndex]).addClass("hidden");
 908                                                 newHidden |= $(allReplies[replyIndex]).hasClass("new");
 909                                         }
 910                                         clickToShowElement = $("<div></div>").addClass("click-to-show");
 911                                         if (newHidden) {
 912                                                 clickToShowElement.addClass("new");
 913                                         }
 914                                         (function(clickToShowElement, allReplies, text) {
 915                                                 clickToShowElement.text(text);
 916                                                 clickToShowElement.click(function() {
 917                                                         allReplies.removeClass("hidden");
 918                                                         clickToShowElement.addClass("hidden");
 919                                                 });
 920                                         })(clickToShowElement, allReplies, text);
 921                                         $(allReplies[0]).before(clickToShowElement);
 922                                 }
 923                         });
 924                 });
 925         }
 926
 927         /*
 928          * convert all “follow”, “unfollow”, “lock”, and “unlock” links to something
 929          * nicer.
 930          */
 931         $("#sone .follow").submit(function() {
 932                 var followElement = this;
 933                 $.getJSON("followSone.ajax", { "sone": getSoneId(this), "formPassword": getFormPassword() }, function() {
 934                         $(followElement).addClass("hidden");
 935                         $(followElement).parent().find(".unfollow").removeClass("hidden");
 936                 });
 937                 return false;
 938         });
 939         $("#sone .unfollow").submit(function() {
 940                 var unfollowElement = this;
 941                 $.getJSON("unfollowSone.ajax", { "sone": getSoneId(this), "formPassword": getFormPassword() }, function() {
 942                         $(unfollowElement).addClass("hidden");
 943                         $(unfollowElement).parent().find(".follow").removeClass("hidden");
 944                 });
 945                 return false;
 946         });
 947         $("#sone .lock").submit(function() {
 948                 var lockElement = this;
 949                 $.getJSON("lockSone.ajax", { "sone" : getSoneId(this), "formPassword" : getFormPassword() }, function() {
 950                         $(lockElement).addClass("hidden");
 951                         $(lockElement).parent().find(".unlock").removeClass("hidden");
 952                 });
 953                 return false;
 954         });
 955         $("#sone .unlock").submit(function() {
 956                 var unlockElement = this;
 957                 $.getJSON("unlockSone.ajax", { "sone" : getSoneId(this), "formPassword" : getFormPassword() }, function() {
 958                         $(unlockElement).addClass("hidden");
 959                         $(unlockElement).parent().find(".lock").removeClass("hidden");
 960                 });
 961                 return false;
 962         });
 963
 964         /* process all existing notifications, ajaxify dismiss buttons. */
 965         $("#sone #notification-area .notification").each(function() {
 966                 ajaxifyNotification($(this));
 967         });
 968
 969         /* activate status polling. */
 970         setTimeout(getStatus, 5000);
 971
 972         /* reset activity counter when the page has focus. */
 973         $(window).focus(function() {
 974                 focus = true;
 975                 resetActivity();
 976         }).blur(function() {
 977                 focus = false;
 978         })
 979
 980 });