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 function updateReplyLikes(replyId) {
 405         $.getJSON("getLikes.ajax", { "type": "reply", "reply": replyId }, function(data, textStatus) {
 406                 if ((data != null) && data.success) {
 407                         $("#sone .reply#" + replyId + " .status-line .likes").toggleClass("hidden", data.likes == 0)
 408                         $("#sone .reply#" + replyId + " .status-line .likes span.like-count").text(data.likes);
 409                         $("#sone .reply#" + replyId + " .status-line .likes > span").attr("title", generateSoneList(data.sones));
 410                 }
 411         }, function(xmlHttpRequest, textStatus, error) {
 412                 /* ignore error. */
 413         });
 414 }
 415
 416 /**
 417  * Posts a reply and calls the given callback when the request finishes.
 418  *
 419  * @param postId
 420  *            The ID of the post the reply refers to
 421  * @param text
 422  *            The text to post
 423  * @param callbackFunction
 424  *            The callback function to call when the request finishes (takes 3
 425  *            parameters: success, error, replyId)
 426  */
 427 function postReply(postId, text, callbackFunction) {
 428         $.getJSON("createReply.ajax", { "formPassword" : getFormPassword(), "post" : postId, "text": text }, function(data, textStatus) {
 429                 if (data == null) {
 430                         /* TODO - show error */
 431                         return;
 432                 }
 433                 if (data.success) {
 434                         callbackFunction(true, null, data.reply);
 435                 } else {
 436                         callbackFunction(false, data.error);
 437                 }
 438         }, function(xmlHttpRequest, textStatus, error) {
 439                 /* ignore error. */
 440         });
 441 }
 442
 443 /**
 444  * Requests information about the reply with the given ID.
 445  *
 446  * @param replyId
 447  *            The ID of the reply
 448  * @param callbackFunction
 449  *            A callback function (parameters soneId, soneName, replyTime,
 450  *            replyDisplayTime, text, html)
 451  */
 452 function getReply(replyId, callbackFunction) {
 453         $.getJSON("getReply.ajax", { "reply" : replyId }, function(data, textStatus) {
 454                 if ((data != null) && data.success) {
 455                         callbackFunction(data.soneId, data.soneName, data.time, data.displayTime, data.text, data.html);
 456                 }
 457         }, function(xmlHttpRequest, textStatus, error) {
 458                 /* ignore error. */
 459         });
 460 }
 461
 462 /**
 463  * Ajaxifies the given post by enhancing all eligible elements with AJAX.
 464  *
 465  * @param postElement
 466  *            The post element to ajaxify
 467  */
 468 function ajaxifyPost(postElement) {
 469         $(postElement).find("form").submit(function() {
 470                 return false;
 471         });
 472         $(postElement).find(".create-reply button:submit").click(function() {
 473                 inputField = $(this.form).find(":input:enabled").get(0);
 474                 postId = getPostId(this);
 475                 text = $(inputField).val();
 476                 (function(postId, text, inputField) {
 477                         postReply(postId, text, function(success, error, replyId) {
 478                                 if (success) {
 479                                         $(inputField).val("");
 480                                         loadNewReply(replyId);
 481                                         markPostAsKnown(getPostElement(inputField));
 482                                         $("#sone .post#" + postId + " .create-reply").addClass("hidden");
 483                                 } else {
 484                                         alert(error);
 485                                 }
 486                         });
 487                 })(postId, text, inputField);
 488                 return false;
 489         });
 490
 491         /* replace all “delete” buttons with javascript. */
 492         (function(postElement) {
 493                 getTranslation("WebInterface.Confirmation.DeletePostButton", function(deletePostText) {
 494                         postId = getPostId(postElement);
 495                         enhanceDeletePostButton($(postElement).find(".delete-post button"), postId, deletePostText);
 496                 });
 497         })(postElement);
 498
 499         /* convert all “like” buttons to javascript functions. */
 500         $(postElement).find(".like-post").submit(function() {
 501                 likePost(getPostId(this));
 502                 markPostAsKnown(getPostElement(this));
 503                 return false;
 504         });
 505         $(postElement).find(".unlike-post").submit(function() {
 506                 unlikePost(getPostId(this));
 507                 markPostAsKnown(getPostElement(this));
 508                 return false;
 509         });
 510
 511         /* add “comment” link. */
 512         addCommentLink(getPostId(postElement), postElement, $(postElement).find(".post-status-line .time"));
 513
 514         /* process all replies. */
 515         $(postElement).find(".reply").each(function() {
 516                 ajaxifyReply(this);
 517         });
 518
 519         /* process reply input fields. */
 520         getTranslation("WebInterface.DefaultText.Reply", function(text) {
 521                 $(postElement).find("input.reply-input").each(function() {
 522                         registerInputTextareaSwap(this, text, "text", false, false);
 523                 });
 524         });
 525
 526         /* mark everything as known on click. */
 527         $(postElement).click(function() {
 528                 markPostAsKnown(this);
 529         });
 530
 531         /* hide reply input field. */
 532         $(postElement).find(".create-reply").addClass("hidden");
 533 }
 534
 535 /**
 536  * Ajaxifies the given reply element.
 537  *
 538  * @param replyElement
 539  *            The reply element to ajaxify
 540  */
 541 function ajaxifyReply(replyElement) {
 542         $(replyElement).find(".like-reply").submit(function() {
 543                 likeReply(getReplyId(this));
 544                 markPostAsKnown(getPostElement(this));
 545                 return false;
 546         });
 547         $(replyElement).find(".unlike-reply").submit(function() {
 548                 unlikeReply(getReplyId(this));
 549                 markPostAsKnown(getPostElement(this));
 550                 return false;
 551         });
 552         (function(replyElement) {
 553                 getTranslation("WebInterface.Confirmation.DeleteReplyButton", function(deleteReplyText) {
 554                         $(replyElement).find(".delete-reply button").each(function() {
 555                                 enhanceDeleteReplyButton(this, getReplyId(replyElement), deleteReplyText);
 556                         });
 557                 });
 558         })(replyElement);
 559         addCommentLink(getPostId(replyElement), replyElement, $(replyElement).find(".reply-status-line .time"));
 560
 561         /* mark post and all replies as known on click. */
 562         $(replyElement).click(function() {
 563                 markPostAsKnown(getPostElement(this));
 564         });
 565 }
 566
 567 /**
 568  * Ajaxifies the given notification by replacing the form with AJAX.
 569  *
 570  * @param notification
 571  *            jQuery object representing the notification.
 572  */
 573 function ajaxifyNotification(notification) {
 574         notification.find("form.dismiss").submit(function() {
 575                 return false;
 576         });
 577         notification.find("form.dismiss button").click(function() {
 578                 $.getJSON("dismissNotification.ajax", { "formPassword" : getFormPassword(), "notification" : notification.attr("id") }, function(data, textStatus) {
 579                         /* dismiss in case of error, too. */
 580                         notification.slideUp();
 581                 }, function(xmlHttpRequest, textStatus, error) {
 582                         /* ignore error. */
 583                 });
 584         });
 585         return notification;
 586 }
 587
 588 function getStatus() {
 589         $.getJSON("getStatus.ajax", {"loadAllSones": isKnownSonesPage()}, function(data, textStatus) {
 590                 if ((data != null) && data.success) {
 591                         /* process Sone information. */
 592                         $.each(data.sones, function(index, value) {
 593                                 updateSoneStatus(value.id, value.name, value.status, value.modified, value.locked, value.lastUpdated);
 594                         });
 595                         /* process notifications. */
 596                         $.each(data.notifications, function(index, value) {
 597                                 oldNotification = $("#sone #notification-area .notification#" + value.id);
 598                                 notification = ajaxifyNotification(createNotification(value.id, value.text, value.dismissable)).hide();
 599                                 if (oldNotification.length != 0) {
 600                                         oldNotification.replaceWith(notification.show());
 601                                 } else {
 602                                         $("#sone #notification-area").append(notification);
 603                                         notification.slideDown();
 604                                 }
 605                                 setActivity();
 606                         });
 607                         $.each(data.removedNotifications, function(index, value) {
 608                                 $("#sone #notification-area .notification#" + value.id).slideUp();
 609                         });
 610                         /* process new posts. */
 611                         $.each(data.newPosts, function(index, value) {
 612                                 loadNewPost(value);
 613                         });
 614                         /* process new replies. */
 615                         $.each(data.newReplies, function(index, value) {
 616                                 loadNewReply(value);
 617                         });
 618                         /* do it again in 5 seconds. */
 619                         setTimeout(getStatus, 5000);
 620                 } else {
 621                         /* data.success was false, wait 30 seconds. */
 622                         setTimeout(getStatus, 30000);
 623                 }
 624         }, function(xmlHttpRequest, textStatus, error) {
 625                 /* something really bad happend, wait a minute. */
 626                 setTimeout(getStatus, 60000);
 627         })
 628 }
 629
 630 /**
 631  * Returns the content of the page-id attribute.
 632  *
 633  * @returns The page ID
 634  */
 635 function getPageId() {
 636         return $("#sone .page-id").text();
 637 }
 638
 639 /**
 640  * Returns whether the current page is the index page.
 641  *
 642  * @returns {Boolean} <code>true</code> if the current page is the index page,
 643  *          <code>false</code> otherwise
 644  */
 645 function isIndexPage() {
 646         return getPageId() == "index";
 647 }
 648
 649 /**
 650  * Returns whether the current page is a “view Sone” page.
 651  *
 652  * @returns {Boolean} <code>true</code> if the current page is a “view Sone”
 653  *          page, <code>false</code> otherwise
 654  */
 655 function isViewSonePage() {
 656         return getPageId() == "view-sone";
 657 }
 658
 659 /**
 660  * Returns the ID of the currently shown Sone. This will only return a sensible
 661  * value if isViewSonePage() returns <code>true</code>.
 662  *
 663  * @returns The ID of the currently shown Sone
 664  */
 665 function getShownSoneId() {
 666         return $("#sone .sone-id").text();
 667 }
 668
 669 /**
 670  * Returns whether the current page is a “view post” page.
 671  *
 672  * @returns {Boolean} <code>true</code> if the current page is a “view post”
 673  *          page, <code>false</code> otherwise
 674  */
 675 function isViewPostPage() {
 676         return getPageId() == "view-post";
 677 }
 678
 679 /**
 680  * Returns the ID of the currently shown post. This will only return a sensible
 681  * value if isViewPostPage() returns <code>true</code>.
 682  *
 683  * @returns The ID of the currently shown post
 684  */
 685 function getShownPostId() {
 686         return $("#sone .post-id").text();
 687 }
 688
 689 /**
 690  * Returns whether the current page is the “known Sones” page.
 691  *
 692  * @returns {Boolean} <code>true</code> if the current page is the “known
 693  *          Sones” page, <code>false</code> otherwise
 694  */
 695 function isKnownSonesPage() {
 696         return getPageId() == "known-sones";
 697 }
 698
 699 /**
 700  * Returns whether a post with the given ID exists on the current page.
 701  *
 702  * @param postId
 703  *            The post ID to check for
 704  * @returns {Boolean} <code>true</code> if a post with the given ID already
 705  *          exists on the page, <code>false</code> otherwise
 706  */
 707 function hasPost(postId) {
 708         return $(".post#" + postId).length > 0;
 709 }
 710
 711 /**
 712  * Returns whether a reply with the given ID exists on the current page.
 713  *
 714  * @param replyId
 715  *            The reply ID to check for
 716  * @returns {Boolean} <code>true</code> if a reply with the given ID already
 717  *          exists on the page, <code>false</code> otherwise
 718  */
 719 function hasReply(replyId) {
 720         return $("#sone .reply#" + replyId).length > 0;
 721 }
 722
 723 function loadNewPost(postId) {
 724         if (hasPost(postId)) {
 725                 return;
 726         }
 727         $.getJSON("getPost.ajax", { "post" : postId }, function(data, textStatus) {
 728                 if ((data != null) && data.success) {
 729                         if (hasPost(data.post.id)) {
 730                                 return;
 731                         }
 732                         if (!isIndexPage() && !(isViewSonePage() && ((getShownSoneId() == data.post.sone) || (getShownSoneId() == data.post.recipient)))) {
 733                                 return;
 734                         }
 735                         var firstOlderPost = null;
 736                         $("#sone .post").each(function() {
 737                                 if (getPostTime(this) < data.post.time) {
 738                                         firstOlderPost = $(this);
 739                                         return false;
 740                                 }
 741                         });
 742                         newPost = $(data.post.html).addClass("hidden");
 743                         if (firstOlderPost != null) {
 744                                 newPost.insertBefore(firstOlderPost);
 745                         } else {
 746                                 $("#sone #posts").append(newPost);
 747                         }
 748                         ajaxifyPost(newPost);
 749                         newPost.slideDown();
 750                         setActivity();
 751                 }
 752         });
 753 }
 754
 755 function loadNewReply(replyId) {
 756         if (hasReply(replyId)) {
 757                 return;
 758         }
 759         $.getJSON("getReply.ajax", { "reply": replyId }, function(data, textStatus) {
 760                 /* find post. */
 761                 if ((data != null) && data.success) {
 762                         if (hasReply(data.reply.id)) {
 763                                 return;
 764                         }
 765                         $("#sone .post#" + data.reply.postId).each(function() {
 766                                 var firstNewerReply = null;
 767                                 $(this).find(".replies .reply").each(function() {
 768                                         if (getReplyTime(this) > data.reply.time) {
 769                                                 firstNewerReply = $(this);
 770                                                 return false;
 771                                         }
 772                                 });
 773                                 newReply = $(data.reply.html).addClass("hidden");
 774                                 if (firstNewerReply != null) {
 775                                         newReply.insertBefore(firstNewerReply);
 776                                 } else {
 777                                         if ($(this).find(".replies .create-reply")) {
 778                                                 $(this).find(".replies .create-reply").before(newReply);
 779                                         } else {
 780                                                 $(this).find(".replies").append(newReply);
 781                                         }
 782                                 }
 783                                 ajaxifyReply(newReply);
 784                                 newReply.slideDown();
 785                                 setActivity();
 786                                 return false;
 787                         });
 788                 }
 789         });
 790 }
 791
 792 function markPostAsKnown(postElements) {
 793         $(postElements).each(function() {
 794                 postElement = this;
 795                 if ($(postElement).hasClass("new")) {
 796                         (function(postElement) {
 797                                 $.getJSON("markPostAsKnown.ajax", {"formPassword": getFormPassword(), "post": getPostId(postElement)}, function(data, textStatus) {
 798                                         $(postElement).removeClass("new");
 799                                 });
 800                         })(postElement);
 801                 }
 802         });
 803         markReplyAsKnown($(postElements).find(".reply"));
 804 }
 805
 806 function markReplyAsKnown(replyElements) {
 807         $(replyElements).each(function() {
 808                 replyElement = this;
 809                 if ($(replyElement).hasClass("new")) {
 810                         (function(replyElement) {
 811                                 $.getJSON("markReplyAsKnown.ajax", {"formPassword": getFormPassword(), "reply": getReplyId(replyElement)}, function(data, textStatus) {
 812                                         $(replyElement).removeClass("new");
 813                                 });
 814                         })(replyElement);
 815                 }
 816         });
 817 }
 818
 819 function resetActivity() {
 820         title = document.title;
 821         if (title.indexOf('(') == 0) {
 822                 document.title = title.substr(title.indexOf(' ') + 1);
 823         }
 824 }
 825
 826 function setActivity() {
 827         if (!focus) {
 828                 title = document.title;
 829                 if (title.indexOf('(') != 0) {
 830                         document.title = "(!) " + title;
 831                 }
 832         }
 833 }
 834
 835 /**
 836  * Creates a new notification.
 837  *
 838  * @param id
 839  *            The ID of the notificaiton
 840  * @param text
 841  *            The text of the notification
 842  * @param dismissable
 843  *            <code>true</code> if the notification can be dismissed by the
 844  *            user
 845  */
 846 function createNotification(id, text, dismissable) {
 847         notification = $("<div></div>").addClass("notification").attr("id", id);
 848         if (dismissable) {
 849                 dismissForm = $("#sone #notification-area #notification-dismiss-template").clone().removeClass("hidden").removeAttr("id")
 850                 dismissForm.find("input[name=notification]").val(id);
 851                 notification.append(dismissForm);
 852         }
 853         notification.append(text);
 854         return notification;
 855 }
 856
 857 /**
 858  * Shows the details of the notification with the given ID.
 859  *
 860  * @param notificationId
 861  *            The ID of the notification
 862  */
 863 function showNotificationDetails(notificationId) {
 864         $("#sone .notification#" + notificationId + " .text").show();
 865         $("#sone .notification#" + notificationId + " .short-text").hide();
 866 }
 867
 868 //
 869 // EVERYTHING BELOW HERE IS EXECUTED AFTER LOADING THE PAGE
 870 //
 871
 872 var focus = true;
 873
 874 $(document).ready(function() {
 875
 876         /* this initializes the status update input field. */
 877         getTranslation("WebInterface.DefaultText.StatusUpdate", function(defaultText) {
 878                 registerInputTextareaSwap("#sone #update-status .status-input", defaultText, "text", false, false);
 879                 $("#sone #update-status").submit(function() {
 880                         if ($(this).find(":input.default:enabled").length > 0) {
 881                                 return false;
 882                         }
 883                         text = $(this).find(":input:enabled").val();
 884                         $.getJSON("createPost.ajax", { "formPassword": getFormPassword(), "text": text }, function(data, textStatus) {
 885                                 if ((data != null) && data.success) {
 886                                         loadNewPost(data.postId);
 887                                 }
 888                         });
 889                         $(this).find(":input:enabled").val("").blur();
 890                         return false;
 891                 });
 892         });
 893
 894         /* ajaxify input field on “view Sone” page. */
 895         getTranslation("WebInterface.DefaultText.Message", function(defaultText) {
 896                 registerInputTextareaSwap("#sone #post-message input[name=text]", defaultText, "text", false, false);
 897                 $("#sone #post-message").submit(function() {
 898                         text = $(this).find(":input:enabled").val();
 899                         $.getJSON("createPost.ajax", { "formPassword": getFormPassword(), "recipient": getShownSoneId(), "text": text }, function(data, textStatus) {
 900                                 if ((data != null) && data.success) {
 901                                         loadNewPost(data.postId);
 902                                 }
 903                         });
 904                         $(this).find(":input:enabled").val("").blur();
 905                         return false;
 906                 });
 907         });
 908
 909         /* Ajaxifies all posts. */
 910         /* calling getTranslation here will cache the necessary values. */
 911         getTranslation("WebInterface.Confirmation.DeletePostButton", function(text) {
 912                 getTranslation("WebInterface.Confirmation.DeleteReplyButton", function(text) {
 913                         getTranslation("WebInterface.DefaultText.Reply", function(text) {
 914                                 $("#sone .post").each(function() {
 915                                         ajaxifyPost(this);
 916                                 });
 917                         });
 918                 });
 919         });
 920
 921         /* hides all replies but the latest two. */
 922         if (!isViewPostPage()) {
 923                 getTranslation("WebInterface.ClickToShow.Replies", function(text) {
 924                         $("#sone .post .replies").each(function() {
 925                                 allReplies = $(this).find(".reply");
 926                                 if (allReplies.length > 2) {
 927                                         newHidden = false;
 928                                         for (replyIndex = 0; replyIndex < (allReplies.length - 2); ++replyIndex) {
 929                                                 $(allReplies[replyIndex]).addClass("hidden");
 930                                                 newHidden |= $(allReplies[replyIndex]).hasClass("new");
 931                                         }
 932                                         clickToShowElement = $("<div></div>").addClass("click-to-show");
 933                                         if (newHidden) {
 934                                                 clickToShowElement.addClass("new");
 935                                         }
 936                                         (function(clickToShowElement, allReplies, text) {
 937                                                 clickToShowElement.text(text);
 938                                                 clickToShowElement.click(function() {
 939                                                         allReplies.removeClass("hidden");
 940                                                         clickToShowElement.addClass("hidden");
 941                                                 });
 942                                         })(clickToShowElement, allReplies, text);
 943                                         $(allReplies[0]).before(clickToShowElement);
 944                                 }
 945                         });
 946                 });
 947         }
 948
 949         /*
 950          * convert all “follow”, “unfollow”, “lock”, and “unlock” links to something
 951          * nicer.
 952          */
 953         $("#sone .follow").submit(function() {
 954                 var followElement = this;
 955                 $.getJSON("followSone.ajax", { "sone": getSoneId(this), "formPassword": getFormPassword() }, function() {
 956                         $(followElement).addClass("hidden");
 957                         $(followElement).parent().find(".unfollow").removeClass("hidden");
 958                 });
 959                 return false;
 960         });
 961         $("#sone .unfollow").submit(function() {
 962                 var unfollowElement = this;
 963                 $.getJSON("unfollowSone.ajax", { "sone": getSoneId(this), "formPassword": getFormPassword() }, function() {
 964                         $(unfollowElement).addClass("hidden");
 965                         $(unfollowElement).parent().find(".follow").removeClass("hidden");
 966                 });
 967                 return false;
 968         });
 969         $("#sone .lock").submit(function() {
 970                 var lockElement = this;
 971                 $.getJSON("lockSone.ajax", { "sone" : getSoneId(this), "formPassword" : getFormPassword() }, function() {
 972                         $(lockElement).addClass("hidden");
 973                         $(lockElement).parent().find(".unlock").removeClass("hidden");
 974                 });
 975                 return false;
 976         });
 977         $("#sone .unlock").submit(function() {
 978                 var unlockElement = this;
 979                 $.getJSON("unlockSone.ajax", { "sone" : getSoneId(this), "formPassword" : getFormPassword() }, function() {
 980                         $(unlockElement).addClass("hidden");
 981                         $(unlockElement).parent().find(".lock").removeClass("hidden");
 982                 });
 983                 return false;
 984         });
 985
 986         /* process all existing notifications, ajaxify dismiss buttons. */
 987         $("#sone #notification-area .notification").each(function() {
 988                 ajaxifyNotification($(this));
 989         });
 990
 991         /* activate status polling. */
 992         setTimeout(getStatus, 5000);
 993
 994         /* reset activity counter when the page has focus. */
 995         $(window).focus(function() {
 996                 focus = true;
 997                 resetActivity();
 998         }).blur(function() {
 999                 focus = false;
1000         })
1001
1002 });