js/util.js

   1 /*
   2  * StatusNet - a distributed open-source microblogging tool
   3  * Copyright (C) 2008, StatusNet, Inc.
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU Affero General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU Affero General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Affero General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * @category  UI interaction
  19  * @package   StatusNet
  20  * @author    Sarven Capadisli <csarven@status.net>
  21  * @author    Evan Prodromou <evan@status.net>
  22  * @author    Brion Vibber <brion@status.net>
  23  * @copyright 2009,2010 StatusNet, Inc.
  24  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
  25  * @link      http://status.net/
  26  */
  27
  28 var SN = { // StatusNet
  29     C: { // Config
  30         I: { // Init
  31             CounterBlackout: false,
  32             MaxLength: 140,
  33             PatternUsername: /^[0-9a-zA-Z\-_.]*$/,
  34             HTTP20x30x: [200, 201, 202, 203, 204, 205, 206, 300, 301, 302, 303, 304, 305, 306, 307],
  35             NoticeFormMaster: null // to be cloned from the one at top
  36         },
  37
  38         /**
  39          * @fixme are these worth the trouble? They seem to mostly just duplicate
  40          * themselves while slightly obscuring the actual selector, so it's hard
  41          * to pop over to the HTML and find something.
  42          *
  43          * In theory, minification could reduce them to shorter variable names,
  44          * but at present that doesn't happen with yui-compressor.
  45          */
  46         S: { // Selector
  47             Disabled: 'disabled',
  48             Warning: 'warning',
  49             Error: 'error',
  50             Success: 'success',
  51             Processing: 'processing',
  52             CommandResult: 'command_result',
  53             FormNotice: 'form_notice',
  54             NoticeDataGeo: 'notice_data-geo',
  55             NoticeDataGeoCookie: 'NoticeDataGeo',
  56             NoticeDataGeoSelected: 'notice_data-geo_selected',
  57             StatusNetInstance:'StatusNetInstance'
  58         }
  59     },
  60
  61     /**
  62      * Map of localized message strings exported to script from the PHP
  63      * side via Action::getScriptMessages().
  64      *
  65      * Retrieve them via SN.msg(); this array is an implementation detail.
  66      *
  67      * @access private
  68      */
  69     messages: {},
  70
  71     /**
  72      * Grabs a localized string that's been previously exported to us
  73      * from server-side code via Action::getScriptMessages().
  74      *
  75      * @example alert(SN.msg('coolplugin-failed'));
  76      *
  77      * @param {String} key: string key name to pull from message index
  78      * @return matching localized message string
  79      */
  80     msg: function(key) {
  81         if (typeof SN.messages[key] == "undefined") {
  82             return '[' + key + ']';
  83         } else {
  84             return SN.messages[key];
  85         }
  86     },
  87
  88     U: { // Utils
  89         /**
  90          * Setup function -- DOES NOT trigger actions immediately.
  91          *
  92          * Sets up event handlers on the new notice form.
  93          *
  94          * @param {jQuery} form: jQuery object whose first matching element is the form
  95          * @access private
  96          */
  97         FormNoticeEnhancements: function(form) {
  98             console.log("FormNoticeEnhancements - begin");
  99             if (jQuery.data(form[0], 'ElementData') === undefined) {
 100                 MaxLength = form.find('.count').text();
 101                 if (typeof(MaxLength) == 'undefined') {
 102                      MaxLength = SN.C.I.MaxLength;
 103                 }
 104                 jQuery.data(form[0], 'ElementData', {MaxLength:MaxLength});
 105
 106                 SN.U.Counter(form);
 107
 108                 NDT = form.find('.notice_data-text:first');
 109
 110                 NDT.bind('keyup', function(e) {
 111                     SN.U.Counter(form);
 112                 });
 113
 114                 var delayedUpdate= function(e) {
 115                     // Cut and paste events fire *before* the operation,
 116                     // so we need to trigger an update in a little bit.
 117                     // This would be so much easier if the 'change' event
 118                     // actually fired every time the value changed. :P
 119                     window.setTimeout(function() {
 120                         SN.U.Counter(form);
 121                     }, 50);
 122                 };
 123                 // Note there's still no event for mouse-triggered 'delete'.
 124                 NDT.bind('cut', delayedUpdate)
 125                    .bind('paste', delayedUpdate);
 126             }
 127             else {
 128                 form.find('.count').text(jQuery.data(form[0], 'ElementData').MaxLength);
 129             }
 130         },
 131
 132         /**
 133          * To be called from event handlers on the notice import form.
 134          * Triggers an update of the remaining-characters counter.
 135          *
 136          * Additional counter updates will be suppressed during the
 137          * next half-second to avoid flooding the layout engine with
 138          * updates, followed by another automatic check.
 139          *
 140          * The maximum length is pulled from data established by
 141          * FormNoticeEnhancements.
 142          *
 143          * @param {jQuery} form: jQuery object whose first element is the notice posting form
 144          * @access private
 145          */
 146         Counter: function(form) {
 147             SN.C.I.FormNoticeCurrent = form;
 148
 149             var MaxLength = jQuery.data(form[0], 'ElementData').MaxLength;
 150
 151             if (MaxLength <= 0) {
 152                 return;
 153             }
 154
 155             var remaining = MaxLength - SN.U.CharacterCount(form);
 156             var counter = form.find('.count');
 157
 158             if (remaining.toString() != counter.text()) {
 159                 if (!SN.C.I.CounterBlackout || remaining === 0) {
 160                     if (counter.text() != String(remaining)) {
 161                         counter.text(remaining);
 162                     }
 163                     if (remaining < 0) {
 164                         form.addClass(SN.C.S.Warning);
 165                     } else {
 166                         form.removeClass(SN.C.S.Warning);
 167                     }
 168                     // Skip updates for the next 500ms.
 169                     // On slower hardware, updating on every keypress is unpleasant.
 170                     if (!SN.C.I.CounterBlackout) {
 171                         SN.C.I.CounterBlackout = true;
 172                         SN.C.I.FormNoticeCurrent = form;
 173                         window.setTimeout("SN.U.ClearCounterBlackout(SN.C.I.FormNoticeCurrent);", 500);
 174                     }
 175                 }
 176             }
 177         },
 178
 179         /**
 180          * Pull the count of characters in the current edit field.
 181          * Plugins replacing the edit control may need to override this.
 182          *
 183          * @param {jQuery} form: jQuery object whose first element is the notice posting form
 184          * @return number of chars
 185          */
 186         CharacterCount: function(form) {
 187             return form.find('.notice_data-text:first').val().length;
 188         },
 189
 190         /**
 191          * Called internally after the counter update blackout period expires;
 192          * runs another update to make sure we didn't miss anything.
 193          *
 194          * @param {jQuery} form: jQuery object whose first element is the notice posting form
 195          * @access private
 196          */
 197         ClearCounterBlackout: function(form) {
 198             // Allow keyup events to poke the counter again
 199             SN.C.I.CounterBlackout = false;
 200             // Check if the string changed since we last looked
 201             SN.U.Counter(form);
 202         },
 203
 204         /**
 205          * Helper function to rewrite default HTTP form action URLs to HTTPS
 206          * so we can actually fetch them when on an SSL page in ssl=sometimes
 207          * mode.
 208          *
 209          * It would be better to output URLs that didn't hardcode protocol
 210          * and hostname in the first place...
 211          *
 212          * @param {String} url
 213          * @return string
 214          */
 215         RewriteAjaxAction: function(url) {
 216             // Quick hack: rewrite AJAX submits to HTTPS if they'd fail otherwise.
 217             if (document.location.protocol == 'https:' && url.substr(0, 5) == 'http:') {
 218                 return url.replace(/^http:\/\/[^:\/]+/, 'https://' + document.location.host);
 219             } else {
 220                 return url;
 221             }
 222         },
 223
 224         /**
 225          * Grabs form data and submits it asynchronously, with 'ajax=1'
 226          * parameter added to the rest.
 227          *
 228          * If a successful response includes another form, that form
 229          * will be extracted and copied in, replacing the original form.
 230          * If there's no form, the first paragraph will be used.
 231          *
 232          * This will automatically be applied on the 'submit' event for
 233          * any form with the 'ajax' class.
 234          *
 235          * @fixme can sometimes explode confusingly if returnd data is bogus
 236          * @fixme error handling is pretty vague
 237          * @fixme can't submit file uploads
 238          *
 239          * @param {jQuery} form: jQuery object whose first element is a form
 240          * @param function onSuccess: something extra to do on success
 241          *
 242          * @access public
 243          */
 244         FormXHR: function(form, onSuccess) {
 245             $.ajax({
 246                 type: 'POST',
 247                 dataType: 'xml',
 248                 url: SN.U.RewriteAjaxAction(form.attr('action')),
 249                 data: form.serialize() + '&ajax=1',
 250                 beforeSend: function(xhr) {
 251                     form
 252                         .addClass(SN.C.S.Processing)
 253                         .find('.submit')
 254                             .addClass(SN.C.S.Disabled)
 255                             .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 256                 },
 257                 error: function (xhr, textStatus, errorThrown) {
 258                     // If the server end reported an error from StatusNet,
 259                     // find it -- otherwise we'll see what was reported
 260                     // from the browser.
 261                     var errorReported = null;
 262                     if (xhr.responseXML) {
 263                         errorReported = $('#error', xhr.responseXML).text();
 264                     }
 265                     alert(errorReported || errorThrown || textStatus);
 266
 267                     // Restore the form to original state.
 268                     // Hopefully. :D
 269                     form
 270                         .removeClass(SN.C.S.Processing)
 271                         .find('.submit')
 272                             .removeClass(SN.C.S.Disabled)
 273                             .removeAttr(SN.C.S.Disabled);
 274                 },
 275                 success: function(data, textStatus) {
 276                     if (typeof($('form', data)[0]) != 'undefined') {
 277                         form_new = document._importNode($('form', data)[0], true);
 278                         form.replaceWith(form_new);
 279                         if (onSuccess) {
 280                             onSuccess();
 281                         }
 282                     }
 283                     else if (typeof($('p', data)[0]) != 'undefined') {
 284                         form.replaceWith(document._importNode($('p', data)[0], true));
 285                         if (onSuccess) {
 286                             onSuccess();
 287                         }
 288                     }
 289                     else {
 290                         alert('Unknown error.');
 291                     }
 292                 }
 293             });
 294         },
 295
 296         /**
 297          * Setup function -- DOES NOT trigger actions immediately.
 298          *
 299          * Sets up event handlers for special-cased async submission of the
 300          * notice-posting form, including some pre-post validation.
 301          *
 302          * Unlike FormXHR() this does NOT submit the form immediately!
 303          * It sets up event handlers so that any method of submitting the
 304          * form (click on submit button, enter, submit() etc) will trigger
 305          * it properly.
 306          *
 307          * Also unlike FormXHR(), this system will use a hidden iframe
 308          * automatically to handle file uploads via <input type="file">
 309          * controls.
 310          *
 311          * @fixme tl;dr
 312          * @fixme vast swaths of duplicate code and really long variable names clutter this function up real bad
 313          * @fixme error handling is unreliable
 314          * @fixme cookieValue is a global variable, but probably shouldn't be
 315          * @fixme saving the location cache cookies should be split out
 316          * @fixme some error messages are hardcoded english: needs i18n
 317          * @fixme special-case for bookmarklet is confusing and uses a global var "self". Is this ok?
 318          *
 319          * @param {jQuery} form: jQuery object whose first element is a form
 320          *
 321          * @access public
 322          */
 323         FormNoticeXHR: function(form) {
 324             console.log("FormNoticeXHR - begin");
 325             SN.C.I.NoticeDataGeo = {};
 326             form.append('<input type="hidden" name="ajax" value="1"/>');
 327
 328             // Make sure we don't have a mixed HTTP/HTTPS submission...
 329             form.attr('action', SN.U.RewriteAjaxAction(form.attr('action')));
 330
 331             /**
 332              * Show a response feedback bit under the new-notice dialog.
 333              *
 334              * @param {String} cls: CSS class name to use ('error' or 'success')
 335              * @param {String} text
 336              * @access private
 337              */
 338             var showFeedback = function(cls, text) {
 339                 form.append(
 340                     $('<p class="form_response"></p>')
 341                         .addClass(cls)
 342                         .text(text)
 343                 );
 344             };
 345
 346             /**
 347              * Hide the previous response feedback, if any.
 348              */
 349             var removeFeedback = function() {
 350                 form.find('.form_response').remove();
 351             };
 352
 353             form.ajaxForm({
 354                 dataType: 'xml',
 355                 timeout: '60000',
 356                 beforeSend: function(formData) {
 357                     if (form.find('.notice_data-text:first').val() == '') {
 358                         form.addClass(SN.C.S.Warning);
 359                         return false;
 360                     }
 361                     form
 362                         .addClass(SN.C.S.Processing)
 363                         .find('.submit')
 364                             .addClass(SN.C.S.Disabled)
 365                             .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 366
 367                     SN.U.normalizeGeoData(form);
 368
 369                     return true;
 370                 },
 371                 error: function (xhr, textStatus, errorThrown) {
 372                     form
 373                         .removeClass(SN.C.S.Processing)
 374                         .find('.submit')
 375                             .removeClass(SN.C.S.Disabled)
 376                             .removeAttr(SN.C.S.Disabled, SN.C.S.Disabled);
 377                     removeFeedback();
 378                     if (textStatus == 'timeout') {
 379                         // @fixme i18n
 380                         showFeedback('error', 'Sorry! We had trouble sending your notice. The servers are overloaded. Please try again, and contact the site administrator if this problem persists.');
 381                     }
 382                     else {
 383                         var response = SN.U.GetResponseXML(xhr);
 384                         if ($('.'+SN.C.S.Error, response).length > 0) {
 385                             form.append(document._importNode($('.'+SN.C.S.Error, response)[0], true));
 386                         }
 387                         else {
 388                             if (parseInt(xhr.status) === 0 || jQuery.inArray(parseInt(xhr.status), SN.C.I.HTTP20x30x) >= 0) {
 389                                 form
 390                                     .resetForm()
 391                                     .find('.attach-status').remove();
 392                                 SN.U.FormNoticeEnhancements(form);
 393                             }
 394                             else {
 395                                 // @fixme i18n
 396                                 showFeedback('error', '(Sorry! We had trouble sending your notice ('+xhr.status+' '+xhr.statusText+'). Please report the problem to the site administrator if this happens again.');
 397                             }
 398                         }
 399                     }
 400                 },
 401                 success: function(data, textStatus) {
 402                     removeFeedback();
 403                     var errorResult = $('#'+SN.C.S.Error, data);
 404                     if (errorResult.length > 0) {
 405                         showFeedback('error', errorResult.text());
 406                     }
 407                     else {
 408                         if($('body')[0].id == 'bookmarklet') {
 409                             // @fixme self is not referenced anywhere?
 410                             self.close();
 411                         }
 412
 413                         var commandResult = $('#'+SN.C.S.CommandResult, data);
 414                         if (commandResult.length > 0) {
 415                             showFeedback('success', commandResult.text());
 416                         }
 417                         else {
 418                             // New notice post was successful. If on our timeline, show it!
 419                             var notice = document._importNode($('li', data)[0], true);
 420                             var notices = $('#notices_primary .notices:first');
 421                             var replyItem = form.closest('li.notice-reply');
 422
 423                             if (replyItem.length > 0) {
 424                                 // If this is an inline reply, remove the form...
 425                                 var list = form.closest('.threaded-replies');
 426                                 var placeholder = list.find('.notice-reply-placeholder');
 427                                 replyItem.remove();
 428
 429                                 var id = $(notice).attr('id');
 430                                 if ($("#"+id).length == 0) {
 431                                     console.log("inserting before placeholder");
 432                                     $(notice).insertBefore(placeholder);
 433                                 } else {
 434                                     // Realtime came through before us...
 435                                 }
 436
 437                                 // ...and show the placeholder form.
 438                                 placeholder.show();
 439                             } else if (notices.length > 0 && SN.U.belongsOnTimeline(notice)) {
 440                                 // Not a reply. If on our timeline, show it at the top!
 441
 442                                 if ($('#'+notice.id).length === 0) {
 443                                     var notice_irt_value = form.find('[name=inreplyto]').val();
 444                                     var notice_irt = '#notices_primary #notice-'+notice_irt_value;
 445                                     if($('body')[0].id == 'conversation') {
 446                                         if(notice_irt_value.length > 0 && $(notice_irt+' .notices').length < 1) {
 447                                             $(notice_irt).append('<ul class="notices"></ul>');
 448                                         }
 449                                         $($(notice_irt+' .notices')[0]).append(notice);
 450                                     }
 451                                     else {
 452                                         notices.prepend(notice);
 453                                     }
 454                                     $('#'+notice.id)
 455                                         .css({display:'none'})
 456                                         .fadeIn(2500);
 457                                     SN.U.NoticeWithAttachment($('#'+notice.id));
 458                                     SN.U.switchInputFormTab("placeholder");
 459                                 }
 460                             } else {
 461                                 // Not on a timeline that this belongs on?
 462                                 // Just show a success message.
 463                                 // @fixme inline
 464                                 showFeedback('success', $('title', data).text());
 465                             }
 466                         }
 467                         form.resetForm();
 468                         form.find('[name=inreplyto]').val('');
 469                         form.find('.attach-status').remove();
 470                         SN.U.FormNoticeEnhancements(form);
 471                     }
 472                 },
 473                 complete: function(xhr, textStatus) {
 474                     form
 475                         .removeClass(SN.C.S.Processing)
 476                         .find('.submit')
 477                             .removeAttr(SN.C.S.Disabled)
 478                             .removeClass(SN.C.S.Disabled);
 479
 480                     form.find('[name=lat]').val(SN.C.I.NoticeDataGeo.NLat);
 481                     form.find('[name=lon]').val(SN.C.I.NoticeDataGeo.NLon);
 482                     form.find('[name=location_ns]').val(SN.C.I.NoticeDataGeo.NLNS);
 483                     form.find('[name=location_id]').val(SN.C.I.NoticeDataGeo.NLID);
 484                     form.find('[name=notice_data-geo]').attr('checked', SN.C.I.NoticeDataGeo.NDG);
 485                 }
 486             });
 487         },
 488
 489         FormProfileSearchXHR: function(form) {
 490             $.ajax({
 491                 type: 'POST',
 492                 dataType: 'xml',
 493                 url: form.attr('action'),
 494                 data: form.serialize() + '&ajax=1',
 495                 beforeSend: function(xhr) {
 496                     form
 497                         .addClass(SN.C.S.Processing)
 498                         .find('.submit')
 499                             .addClass(SN.C.S.Disabled)
 500                             .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 501                 },
 502                 error: function (xhr, textStatus, errorThrown) {
 503                     alert(errorThrown || textStatus);
 504                 },
 505                 success: function(data, textStatus) {
 506                     var results_placeholder = $('#profile_search_results');
 507                     if (typeof($('ul', data)[0]) != 'undefined') {
 508                         var list = document._importNode($('ul', data)[0], true);
 509                         results_placeholder.replaceWith(list);
 510                     }
 511                     else {
 512                         var _error = $('<li/>').append(document._importNode($('p', data)[0], true));
 513                         results_placeholder.html(_error);
 514                     }
 515                     form
 516                         .removeClass(SN.C.S.Processing)
 517                         .find('.submit')
 518                             .removeClass(SN.C.S.Disabled)
 519                             .attr(SN.C.S.Disabled, false);
 520                 }
 521             });
 522         },
 523
 524         FormPeopletagsXHR: function(form) {
 525             $.ajax({
 526                 type: 'POST',
 527                 dataType: 'xml',
 528                 url: form.attr('action'),
 529                 data: form.serialize() + '&ajax=1',
 530                 beforeSend: function(xhr) {
 531                     form.find('.submit')
 532                             .addClass(SN.C.S.Processing)
 533                             .addClass(SN.C.S.Disabled)
 534                             .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 535                 },
 536                 error: function (xhr, textStatus, errorThrown) {
 537                     alert(errorThrown || textStatus);
 538                 },
 539                 success: function(data, textStatus) {
 540                     var results_placeholder = form.parents('.entity_tags');
 541                     if (typeof($('.entity_tags', data)[0]) != 'undefined') {
 542                         var tags = document._importNode($('.entity_tags', data)[0], true);
 543                         $(tags).find('.editable').append($('<button class="peopletags_edit_button"/>'));
 544                         results_placeholder.replaceWith(tags);
 545                     } else {
 546                         results_placeholder.find('p').remove();
 547                         results_placeholder.append(document._importNode($('p', data)[0], true));
 548                         form.removeClass(SN.C.S.Processing)
 549                             .find('.submit')
 550                                 .removeClass(SN.C.S.Disabled)
 551                                 .attr(SN.C.S.Disabled, false);
 552                     }
 553                 }
 554             });
 555         },
 556
 557         normalizeGeoData: function(form) {
 558             SN.C.I.NoticeDataGeo.NLat = form.find('[name=lat]').val();
 559             SN.C.I.NoticeDataGeo.NLon = form.find('[name=lon]').val();
 560             SN.C.I.NoticeDataGeo.NLNS = form.find('[name=location_ns]').val();
 561             SN.C.I.NoticeDataGeo.NLID = form.find('[name=location_id]').val();
 562             SN.C.I.NoticeDataGeo.NDG = form.find('[name=notice_data-geo]').attr('checked'); // @fixme
 563
 564             var cookieValue = $.cookie(SN.C.S.NoticeDataGeoCookie);
 565
 566             if (cookieValue !== null && cookieValue != 'disabled') {
 567                 cookieValue = JSON.parse(cookieValue);
 568                 SN.C.I.NoticeDataGeo.NLat = form.find('[name=lat]').val(cookieValue.NLat).val();
 569                 SN.C.I.NoticeDataGeo.NLon = form.find('[name=lon]').val(cookieValue.NLon).val();
 570                 if (cookieValue.NLNS) {
 571                     SN.C.I.NoticeDataGeo.NLNS = form.find('[name=location_ns]').val(cookieValue.NLNS).val();
 572                     SN.C.I.NoticeDataGeo.NLID = form.find('[name=location_id]').val(cookieValue.NLID).val();
 573                 } else {
 574                     form.find('[name=location_ns]').val('');
 575                     form.find('[name=location_id]').val('');
 576                 }
 577             }
 578             if (cookieValue == 'disabled') {
 579                 SN.C.I.NoticeDataGeo.NDG = form.find('[name=notice_data-geo]').attr('checked', false).attr('checked');
 580             }
 581             else {
 582                 SN.C.I.NoticeDataGeo.NDG = form.find('[name=notice_data-geo]').attr('checked', true).attr('checked');
 583             }
 584
 585         },
 586
 587         /**
 588          * Fetch an XML DOM from an XHR's response data.
 589          *
 590          * Works around unavailable responseXML when document.domain
 591          * has been modified by Meteor or other tools, in some but not
 592          * all browsers.
 593          *
 594          * @param {XMLHTTPRequest} xhr
 595          * @return DOMDocument
 596          */
 597         GetResponseXML: function(xhr) {
 598             try {
 599                 return xhr.responseXML;
 600             } catch (e) {
 601                 return (new DOMParser()).parseFromString(xhr.responseText, "text/xml");
 602             }
 603         },
 604
 605         /**
 606          * Setup function -- DOES NOT trigger actions immediately.
 607          *
 608          * Sets up event handlers on all visible notice's reply buttons to
 609          * tweak the new-notice form with needed variables and focus it
 610          * when pushed.
 611          *
 612          * (This replaces the default reply button behavior to submit
 613          * directly to a form which comes back with a specialized page
 614          * with the form data prefilled.)
 615          *
 616          * @access private
 617          */
 618         NoticeReply: function() {
 619             $('#content .notice_reply').live('click', function(e) {
 620                 e.preventDefault();
 621                 var notice = $(this).closest('li.notice');
 622                 SN.U.NoticeInlineReplyTrigger(notice);
 623                 return false;
 624             });
 625         },
 626
 627         /**
 628          * Stub -- kept for compat with plugins for now.
 629          * @access private
 630          */
 631         NoticeReplyTo: function(notice) {
 632         },
 633
 634         /**
 635          * Open up a notice's inline reply box.
 636          *
 637          * @param {jQuery} notice: jQuery object containing one notice
 638          * @param {String} initialText
 639          */
 640         NoticeInlineReplyTrigger: function(notice, initialText) {
 641             // Find the notice we're replying to...
 642             console.log('NoticeInlineReplyTrigger');
 643             var id = $($('.notice_id', notice)[0]).text();
 644             var parentNotice = notice;
 645
 646             // Find the threaded replies view we'll be adding to...
 647             var list = notice.closest('.notices');
 648             if (list.hasClass('threaded-replies')) {
 649                 // We're replying to a reply; use reply form on the end of this list.
 650                 // We'll add our form at the end of this; grab the root notice.
 651                 parentNotice = list.closest('.notice');
 652             } else {
 653                 // We're replying to a parent notice; pull its threaded list
 654                 // and we'll add on the end of it. Will add if needed.
 655                 list = $('ul.threaded-replies', notice);
 656                 if (list.length == 0) {
 657                     console.log("list = 0");
 658                     SN.U.NoticeInlineReplyPlaceholder(notice);
 659                     list = $('ul.threaded-replies', notice);
 660                 } else {
 661                     var placeholder = $('li.notice-reply-placeholder', notice);
 662                     if (placeholder.length == 0) {
 663                         SN.U.NoticeInlineReplyPlaceholder(notice);
 664                     }
 665                 }
 666             }
 667
 668             // See if the form's already open...
 669             var replyForm = $('.notice-reply-form', list);
 670
 671             var nextStep = function() {
 672                 // Override...?
 673                 replyForm.find('input[name=inreplyto]').val(id);
 674                 replyForm.find('#notice_to').attr('disabled', 'disabled').hide();
 675                 replyForm.find('#notice_private').attr('disabled', 'disabled').hide();
 676                 replyForm.find('label[for=notice_to]').hide();
 677                 replyForm.find('label[for=notice_private]').hide();
 678
 679                 // Set focus...
 680                 var text = replyForm.find('textarea');
 681                 if (text.length == 0) {
 682                     throw "No textarea";
 683                 }
 684                 var replyto = '';
 685                 if (initialText) {
 686                     replyto = initialText + ' ';
 687                 }
 688                 text.val(replyto + text.val().replace(RegExp(replyto, 'i'), ''));
 689                 text.data('initialText', $.trim(initialText + ''));
 690                 text.focus();
 691                 if (text[0].setSelectionRange) {
 692                     var len = text.val().length;
 693                     text[0].setSelectionRange(len,len);
 694                 }
 695             };
 696             if (replyForm.length > 0) {
 697                 // Update the existing form...
 698                 nextStep();
 699             } else {
 700                 // Hide the placeholder...
 701                 var placeholder = list.find('li.notice-reply-placeholder').hide();
 702
 703                 // Create the reply form entry at the end
 704                 var replyItem = $('li.notice-reply', list);
 705                 if (replyItem.length == 0) {
 706                     replyItem = $('<li class="notice-reply"></li>');
 707
 708                     var intermediateStep = function(formMaster) {
 709                         var formEl = document._importNode(formMaster, true);
 710                         replyItem.append(formEl);
 711                         list.append(replyItem); // *after* the placeholder
 712
 713                         var form = replyForm = $(formEl);
 714                         SN.Init.NoticeFormSetup(form);
 715
 716                         nextStep();
 717                     };
 718                     if (SN.C.I.NoticeFormMaster) {
 719                         // We've already saved a master copy of the form.
 720                         // Clone it in!
 721                         intermediateStep(SN.C.I.NoticeFormMaster);
 722                     } else {
 723                         // Fetch a fresh copy of the notice form over AJAX.
 724                         // Warning: this can have a delay, which looks bad.
 725                         // @fixme this fallback may or may not work
 726                         var url = $('#form_notice').attr('action');
 727                         $.get(url, {ajax: 1}, function(data, textStatus, xhr) {
 728                             intermediateStep($('form', data)[0]);
 729                         });
 730                     }
 731                 }
 732             }
 733         },
 734
 735         NoticeInlineReplyPlaceholder: function(notice) {
 736             var list = notice.find('ul.threaded-replies');
 737             if (list.length == 0) {
 738                 list = $('<ul class="notices threaded-replies xoxo"></ul>');
 739                 notice.append(list);
 740                 list = notice.find('ul.threaded-replies');
 741             }
 742             var placeholder = $('<li class="notice-reply-placeholder">' +
 743                                     '<input class="placeholder">' +
 744                                 '</li>');
 745             placeholder.find('input')
 746                 .val(SN.msg('reply_placeholder'));
 747             list.append(placeholder);
 748         },
 749
 750         /**
 751          * Setup function -- DOES NOT apply immediately.
 752          *
 753          * Sets up event handlers for inline reply mini-form placeholders.
 754          * Uses 'live' rather than 'bind', so applies to future as well as present items.
 755          */
 756         NoticeInlineReplySetup: function() {
 757             $('li.notice-reply-placeholder input')
 758                 .live('focus', function() {
 759                     var notice = $(this).closest('li.notice');
 760                     SN.U.NoticeInlineReplyTrigger(notice);
 761                     return false;
 762                 });
 763             $('li.notice-reply-comments a')
 764                 .live('click', function() {
 765                     var url = $(this).attr('href');
 766                     var area = $(this).closest('.threaded-replies');
 767                     $.get(url, {ajax: 1}, function(data, textStatus, xhr) {
 768                         var replies = $('.threaded-replies', data);
 769                         if (replies.length) {
 770                             area.replaceWith(document._importNode(replies[0], true));
 771                         }
 772                     });
 773                     return false;
 774                 });
 775         },
 776
 777         /**
 778          * Setup function -- DOES NOT trigger actions immediately.
 779          *
 780          * Sets up event handlers for repeat forms to toss up a confirmation
 781          * popout before submitting.
 782          *
 783          * Uses 'live' rather than 'bind', so applies to future as well as present items.
 784          *
 785          */
 786         NoticeRepeat: function() {
 787             $('.form_repeat').live('click', function(e) {
 788                 e.preventDefault();
 789
 790                 SN.U.NoticeRepeatConfirmation($(this));
 791                 return false;
 792             });
 793         },
 794
 795         /**
 796          * Shows a confirmation dialog box variant of the repeat button form.
 797          * This seems to use a technique where the repeat form contains
 798          * _both_ a standalone button _and_ text and buttons for a dialog.
 799          * The dialog will close after its copy of the form is submitted,
 800          * or if you click its 'close' button.
 801          *
 802          * The dialog is created by duplicating the original form and changing
 803          * its style; while clever, this is hard to generalize and probably
 804          * duplicates a lot of unnecessary HTML output.
 805          *
 806          * @fixme create confirmation dialogs through a generalized interface
 807          * that can be reused instead of hardcoded text and styles.
 808          *
 809          * @param {jQuery} form
 810          */
 811         NoticeRepeatConfirmation: function(form) {
 812             var submit_i = form.find('.submit');
 813
 814             var submit = submit_i.clone();
 815             submit
 816                 .addClass('submit_dialogbox')
 817                 .removeClass('submit');
 818             form.append(submit);
 819             submit.bind('click', function() { SN.U.FormXHR(form); return false; });
 820
 821             submit_i.hide();
 822
 823             form
 824                 .addClass('dialogbox')
 825                 .append('<button class="close">&#215;</button>')
 826                 .closest('.notice-options')
 827                     .addClass('opaque');
 828
 829             form.find('button.close').click(function(){
 830                 $(this).remove();
 831
 832                 form
 833                     .removeClass('dialogbox')
 834                     .closest('.notice-options')
 835                         .removeClass('opaque');
 836
 837                 form.find('.submit_dialogbox').remove();
 838                 form.find('.submit').show();
 839
 840                 return false;
 841             });
 842         },
 843
 844         /**
 845          * Setup function -- DOES NOT trigger actions immediately.
 846          *
 847          * Goes through all notices currently displayed and sets up attachment
 848          * handling if needed.
 849          */
 850         NoticeAttachments: function() {
 851             $('.notice a.attachment').each(function() {
 852                 SN.U.NoticeWithAttachment($(this).closest('.notice'));
 853             });
 854         },
 855
 856         /**
 857          * Setup function -- DOES NOT trigger actions immediately.
 858          *
 859          * Sets up special attachment link handling if needed. Currently this
 860          * consists only of making the "more" button used for OStatus message
 861          * cropping turn into an auto-expansion button that loads the full
 862          * text from an attachment file.
 863          *
 864          * @param {jQuery} notice
 865          */
 866         NoticeWithAttachment: function(notice) {
 867             if (notice.find('.attachment').length === 0) {
 868                 return;
 869             }
 870
 871             var attachment_more = notice.find('.attachment.more');
 872             if (attachment_more.length > 0) {
 873                 $(attachment_more[0]).click(function() {
 874                     var m = $(this);
 875                     m.addClass(SN.C.S.Processing);
 876                     $.get(m.attr('href')+'/ajax', null, function(data) {
 877                         m.parent('.entry-content').html($(data).find('#attachment_view .entry-content').html());
 878                     });
 879
 880                     return false;
 881                 }).attr('title', SN.msg('showmore_tooltip'));
 882             }
 883         },
 884
 885         /**
 886          * Setup function -- DOES NOT trigger actions immediately.
 887          *
 888          * Sets up event handlers for the file-attachment widget in the
 889          * new notice form. When a file is selected, a box will be added
 890          * below the text input showing the filename and, if supported
 891          * by the browser, a thumbnail preview.
 892          *
 893          * This preview box will also allow removing the attachment
 894          * prior to posting.
 895          *
 896          * @param {jQuery} form
 897          */
 898         NoticeDataAttach: function(form) {
 899             var NDA = form.find('input[type=file]');
 900             NDA.change(function(event) {
 901                 form.find('.attach-status').remove();
 902
 903                 var filename = $(this).val();
 904                 if (!filename) {
 905                     // No file -- we've been tricked!
 906                     return false;
 907                 }
 908
 909                 var attachStatus = $('<div class="attach-status '+SN.C.S.Success+'"><code></code> <button class="close">&#215;</button></div>');
 910                 attachStatus.find('code').text(filename);
 911                 attachStatus.find('button').click(function(){
 912                     attachStatus.remove();
 913                     NDA.val('');
 914
 915                     return false;
 916                 });
 917                 form.append(attachStatus);
 918
 919                 if (typeof this.files == "object") {
 920                     // Some newer browsers will let us fetch the files for preview.
 921                     for (var i = 0; i < this.files.length; i++) {
 922                         SN.U.PreviewAttach(form, this.files[i]);
 923                     }
 924                 }
 925             });
 926         },
 927
 928         /**
 929          * Get PHP's MAX_FILE_SIZE setting for this form;
 930          * used to apply client-side file size limit checks.
 931          *
 932          * @param {jQuery} form
 933          * @return int max size in bytes; 0 or negative means no limit
 934          */
 935         maxFileSize: function(form) {
 936             var max = $(form).find('input[name=MAX_FILE_SIZE]').attr('value');
 937             if (max) {
 938                 return parseInt(max);
 939             } else {
 940                 return 0;
 941             }
 942         },
 943
 944         /**
 945          * For browsers with FileAPI support: make a thumbnail if possible,
 946          * and append it into the attachment display widget.
 947          *
 948          * Known good:
 949          * - Firefox 3.6.6, 4.0b7
 950          * - Chrome 8.0.552.210
 951          *
 952          * Known ok metadata, can't get contents:
 953          * - Safari 5.0.2
 954          *
 955          * Known fail:
 956          * - Opera 10.63, 11 beta (no input.files interface)
 957          *
 958          * @param {jQuery} form
 959          * @param {File} file
 960          *
 961          * @todo use configured thumbnail size
 962          * @todo detect pixel size?
 963          * @todo should we render a thumbnail to a canvas and then use the smaller image?
 964          */
 965         PreviewAttach: function(form, file) {
 966             var tooltip = file.type + ' ' + Math.round(file.size / 1024) + 'KB';
 967             var preview = true;
 968
 969             var blobAsDataURL;
 970             if (typeof window.createObjectURL != "undefined") {
 971                 /**
 972                  * createObjectURL lets us reference the file directly from an <img>
 973                  * This produces a compact URL with an opaque reference to the file,
 974                  * which we can reference immediately.
 975                  *
 976                  * - Firefox 3.6.6: no
 977                  * - Firefox 4.0b7: no
 978                  * - Safari 5.0.2: no
 979                  * - Chrome 8.0.552.210: works!
 980                  */
 981                 blobAsDataURL = function(blob, callback) {
 982                     callback(window.createObjectURL(blob));
 983                 }
 984             } else if (typeof window.FileReader != "undefined") {
 985                 /**
 986                  * FileAPI's FileReader can build a data URL from a blob's contents,
 987                  * but it must read the file and build it asynchronously. This means
 988                  * we'll be passing a giant data URL around, which may be inefficient.
 989                  *
 990                  * - Firefox 3.6.6: works!
 991                  * - Firefox 4.0b7: works!
 992                  * - Safari 5.0.2: no
 993                  * - Chrome 8.0.552.210: works!
 994                  */
 995                 blobAsDataURL = function(blob, callback) {
 996                     var reader = new FileReader();
 997                     reader.onload = function(event) {
 998                         callback(reader.result);
 999                     }
1000                     reader.readAsDataURL(blob);
1001                 }
1002             } else {
1003                 preview = false;
1004             }
1005
1006             var imageTypes = ['image/png', 'image/jpeg', 'image/gif', 'image/svg+xml'];
1007             if ($.inArray(file.type, imageTypes) == -1) {
1008                 // We probably don't know how to show the file.
1009                 preview = false;
1010             }
1011
1012             var maxSize = 8 * 1024 * 1024;
1013             if (file.size > maxSize) {
1014                 // Don't kill the browser trying to load some giant image.
1015                 preview = false;
1016             }
1017
1018             if (preview) {
1019                 blobAsDataURL(file, function(url) {
1020                     var img = $('<img>')
1021                         .attr('title', tooltip)
1022                         .attr('alt', tooltip)
1023                         .attr('src', url)
1024                         .attr('style', 'height: 120px');
1025                     form.find('.attach-status').append(img);
1026                 });
1027             } else {
1028                 var img = $('<div></div>').text(tooltip);
1029                 form.find('.attach-status').append(img);
1030             }
1031         },
1032
1033         /**
1034          * Setup function -- DOES NOT trigger actions immediately.
1035          *
1036          * Initializes state for the location-lookup features in the
1037          * new-notice form. Seems to set up some event handlers for
1038          * triggering lookups and using the new values.
1039          *
1040          * @param {jQuery} form
1041          *
1042          * @fixme tl;dr
1043          * @fixme there's not good visual state update here, so users have a
1044          *        hard time figuring out if it's working or fixing if it's wrong.
1045          *
1046          */
1047         NoticeLocationAttach: function(form) {
1048             // @fixme this should not be tied to the main notice form, as there may be multiple notice forms...
1049             var NLat = form.find('[name=lat]')
1050             var NLon = form.find('[name=lon]')
1051             var NLNS = form.find('[name=location_ns]').val();
1052             var NLID = form.find('[name=location_id]').val();
1053             var NLN = ''; // @fixme
1054             var NDGe = form.find('[name=notice_data-geo]');
1055             var check = form.find('[name=notice_data-geo]');
1056             var label = form.find('label.notice_data-geo');
1057
1058             function removeNoticeDataGeo(error) {
1059                 label
1060                     .attr('title', jQuery.trim(label.text()))
1061                     .removeClass('checked');
1062
1063                 form.find('[name=lat]').val('');
1064                 form.find('[name=lon]').val('');
1065                 form.find('[name=location_ns]').val('');
1066                 form.find('[name=location_id]').val('');
1067                 form.find('[name=notice_data-geo]').attr('checked', false);
1068
1069                 $.cookie(SN.C.S.NoticeDataGeoCookie, 'disabled', { path: '/' });
1070
1071                 if (error) {
1072                     form.find('.geo_status_wrapper').removeClass('success').addClass('error');
1073                     form.find('.geo_status_wrapper .geo_status').text(error);
1074                 } else {
1075                     form.find('.geo_status_wrapper').remove();
1076                 }
1077             }
1078
1079             function getJSONgeocodeURL(geocodeURL, data) {
1080                 SN.U.NoticeGeoStatus(form, 'Looking up place name...');
1081                 $.getJSON(geocodeURL, data, function(location) {
1082                     var lns, lid;
1083
1084                     if (typeof(location.location_ns) != 'undefined') {
1085                         form.find('[name=location_ns]').val(location.location_ns);
1086                         lns = location.location_ns;
1087                     }
1088
1089                     if (typeof(location.location_id) != 'undefined') {
1090                         form.find('[name=location_id]').val(location.location_id);
1091                         lid = location.location_id;
1092                     }
1093
1094                     if (typeof(location.name) == 'undefined') {
1095                         NLN_text = data.lat + ';' + data.lon;
1096                     }
1097                     else {
1098                         NLN_text = location.name;
1099                     }
1100
1101                     SN.U.NoticeGeoStatus(form, NLN_text, data.lat, data.lon, location.url);
1102                     label
1103                         .attr('title', NoticeDataGeo_text.ShareDisable + ' (' + NLN_text + ')');
1104
1105                     form.find('[name=lat]').val(data.lat);
1106                     form.find('[name=lon]').val(data.lon);
1107                     form.find('[name=location_ns]').val(lns);
1108                     form.find('[name=location_id]').val(lid);
1109                     form.find('[name=notice_data-geo]').attr('checked', true);
1110
1111                     var cookieValue = {
1112                         NLat: data.lat,
1113                         NLon: data.lon,
1114                         NLNS: lns,
1115                         NLID: lid,
1116                         NLN: NLN_text,
1117                         NLNU: location.url,
1118                         NDG: true
1119                     };
1120
1121                     $.cookie(SN.C.S.NoticeDataGeoCookie, JSON.stringify(cookieValue), { path: '/' });
1122                 });
1123             }
1124
1125             if (check.length > 0) {
1126                 if ($.cookie(SN.C.S.NoticeDataGeoCookie) == 'disabled') {
1127                     check.attr('checked', false);
1128                 }
1129                 else {
1130                     check.attr('checked', true);
1131                 }
1132
1133                 var NGW = form.find('.notice_data-geo_wrap');
1134                 var geocodeURL = NGW.attr('data-api');
1135
1136                 label
1137                     .attr('title', label.text());
1138
1139                 check.change(function() {
1140                     if (check.attr('checked') === true || $.cookie(SN.C.S.NoticeDataGeoCookie) === null) {
1141                         label
1142                             .attr('title', NoticeDataGeo_text.ShareDisable)
1143                             .addClass('checked');
1144
1145                         if ($.cookie(SN.C.S.NoticeDataGeoCookie) === null || $.cookie(SN.C.S.NoticeDataGeoCookie) == 'disabled') {
1146                             if (navigator.geolocation) {
1147                                 SN.U.NoticeGeoStatus(form, 'Requesting location from browser...');
1148                                 navigator.geolocation.getCurrentPosition(
1149                                     function(position) {
1150                                         form.find('[name=lat]').val(position.coords.latitude);
1151                                         form.find('[name=lon]').val(position.coords.longitude);
1152
1153                                         var data = {
1154                                             lat: position.coords.latitude,
1155                                             lon: position.coords.longitude,
1156                                             token: $('#token').val()
1157                                         };
1158
1159                                         getJSONgeocodeURL(geocodeURL, data);
1160                                     },
1161
1162                                     function(error) {
1163                                         switch(error.code) {
1164                                             case error.PERMISSION_DENIED:
1165                                                 removeNoticeDataGeo('Location permission denied.');
1166                                                 break;
1167                                             case error.TIMEOUT:
1168                                                 //$('#'+SN.C.S.NoticeDataGeo).attr('checked', false);
1169                                                 removeNoticeDataGeo('Location lookup timeout.');
1170                                                 break;
1171                                         }
1172                                     },
1173
1174                                     {
1175                                         timeout: 10000
1176                                     }
1177                                 );
1178                             }
1179                             else {
1180                                 if (NLat.length > 0 && NLon.length > 0) {
1181                                     var data = {
1182                                         lat: NLat,
1183                                         lon: NLon,
1184                                         token: $('#token').val()
1185                                     };
1186
1187                                     getJSONgeocodeURL(geocodeURL, data);
1188                                 }
1189                                 else {
1190                                     removeNoticeDataGeo();
1191                                     check.remove();
1192                                     label.remove();
1193                                 }
1194                             }
1195                         }
1196                         else {
1197                             var cookieValue = JSON.parse($.cookie(SN.C.S.NoticeDataGeoCookie));
1198
1199                             form.find('[name=lat]').val(cookieValue.NLat);
1200                             form.find('[name=lon]').val(cookieValue.NLon);
1201                             form.find('[name=location_ns]').val(cookieValue.NLNS);
1202                             form.find('[name=location_id]').val(cookieValue.NLID);
1203                             form.find('[name=notice_data-geo]').attr('checked', cookieValue.NDG);
1204
1205                             SN.U.NoticeGeoStatus(form, cookieValue.NLN, cookieValue.NLat, cookieValue.NLon, cookieValue.NLNU);
1206                             label
1207                                 .attr('title', NoticeDataGeo_text.ShareDisable + ' (' + cookieValue.NLN + ')')
1208                                 .addClass('checked');
1209                         }
1210                     }
1211                     else {
1212                         removeNoticeDataGeo();
1213                     }
1214                 }).change();
1215             }
1216         },
1217
1218         /**
1219          * Create or update a geolocation status widget in this notice posting form.
1220          *
1221          * @param {jQuery} form
1222          * @param {String} status
1223          * @param {String} lat (optional)
1224          * @param {String} lon (optional)
1225          * @param {String} url (optional)
1226          */
1227         NoticeGeoStatus: function(form, status, lat, lon, url)
1228         {
1229             var wrapper = form.find('.geo_status_wrapper');
1230             if (wrapper.length == 0) {
1231                 wrapper = $('<div class="'+SN.C.S.Success+' geo_status_wrapper"><button class="close" style="float:right">&#215;</button><div class="geo_status"></div></div>');
1232                 wrapper.find('button.close').click(function() {
1233                     form.find('[name=notice_data-geo]').removeAttr('checked').change();
1234                     return false;
1235                 });
1236                 form.append(wrapper);
1237             }
1238             var label;
1239             if (url) {
1240                 label = $('<a></a>').attr('href', url);
1241             } else {
1242                 label = $('<span></span>');
1243             }
1244             label.text(status);
1245             if (lat || lon) {
1246                 var latlon = lat + ';' + lon;
1247                 label.attr('title', latlon);
1248                 if (!status) {
1249                     label.text(latlon)
1250                 }
1251             }
1252             wrapper.find('.geo_status').empty().append(label);
1253         },
1254
1255         /**
1256          * Setup function -- DOES NOT trigger actions immediately.
1257          *
1258          * Initializes event handlers for the "Send direct message" link on
1259          * profile pages, setting it up to display a dialog box when clicked.
1260          *
1261          * Unlike the repeat confirmation form, this appears to fetch
1262          * the form _from the original link target_, so the form itself
1263          * doesn't need to be in the current document.
1264          *
1265          * @fixme breaks ability to open link in new window?
1266          */
1267         NewDirectMessage: function() {
1268             NDM = $('.entity_send-a-message a');
1269             NDM.attr({'href':NDM.attr('href')+'&ajax=1'});
1270             NDM.bind('click', function() {
1271                 var NDMF = $('.entity_send-a-message form');
1272                 if (NDMF.length === 0) {
1273                     $(this).addClass(SN.C.S.Processing);
1274                     $.get(NDM.attr('href'), null, function(data) {
1275                         $('.entity_send-a-message').append(document._importNode($('form', data)[0], true));
1276                         NDMF = $('.entity_send-a-message .form_notice');
1277                         SN.U.FormNoticeXHR(NDMF);
1278                         SN.U.FormNoticeEnhancements(NDMF);
1279                         NDMF.append('<button class="close">&#215;</button>');
1280                         $('.entity_send-a-message button').click(function(){
1281                             NDMF.hide();
1282                             return false;
1283                         });
1284                         NDM.removeClass(SN.C.S.Processing);
1285                     });
1286                 }
1287                 else {
1288                     NDMF.show();
1289                     $('.entity_send-a-message textarea').focus();
1290                 }
1291                 return false;
1292             });
1293         },
1294
1295         /**
1296          * Return a date object with the current local time on the
1297          * given year, month, and day.
1298          *
1299          * @param {number} year: 4-digit year
1300          * @param {number} month: 0 == January
1301          * @param {number} day: 1 == 1
1302          * @return {Date}
1303          */
1304         GetFullYear: function(year, month, day) {
1305             var date = new Date();
1306             date.setFullYear(year, month, day);
1307
1308             return date;
1309         },
1310
1311         /**
1312          * Some sort of object interface for storing some structured
1313          * information in a cookie.
1314          *
1315          * Appears to be used to save the last-used login nickname?
1316          * That's something that browsers usually take care of for us
1317          * these days, do we really need to do it? Does anything else
1318          * use this interface?
1319          *
1320          * @fixme what is this?
1321          * @fixme should this use non-cookie local storage when available?
1322          */
1323         StatusNetInstance: {
1324             /**
1325              * @fixme what is this?
1326              */
1327             Set: function(value) {
1328                 var SNI = SN.U.StatusNetInstance.Get();
1329                 if (SNI !== null) {
1330                     value = $.extend(SNI, value);
1331                 }
1332
1333                 $.cookie(
1334                     SN.C.S.StatusNetInstance,
1335                     JSON.stringify(value),
1336                     {
1337                         path: '/',
1338                         expires: SN.U.GetFullYear(2029, 0, 1)
1339                     });
1340             },
1341
1342             /**
1343              * @fixme what is this?
1344              */
1345             Get: function() {
1346                 var cookieValue = $.cookie(SN.C.S.StatusNetInstance);
1347                 if (cookieValue !== null) {
1348                     return JSON.parse(cookieValue);
1349                 }
1350                 return null;
1351             },
1352
1353             /**
1354              * @fixme what is this?
1355              */
1356             Delete: function() {
1357                 $.cookie(SN.C.S.StatusNetInstance, null);
1358             }
1359         },
1360
1361         /**
1362          * Check if the current page is a timeline where the current user's
1363          * posts should be displayed immediately on success.
1364          *
1365          * @fixme this should be done in a saner way, with machine-readable
1366          * info about what page we're looking at.
1367          *
1368          * @param {DOMElement} notice: HTML chunk with formatted notice
1369          * @return boolean
1370          */
1371         belongsOnTimeline: function(notice) {
1372             var action = $("body").attr('id');
1373             if (action == 'public') {
1374                 return true;
1375             }
1376
1377             var profileLink = $('#nav_profile a').attr('href');
1378             if (profileLink) {
1379                 var authorUrl = $(notice).find('.vcard.author a.url').attr('href');
1380                 if (authorUrl == profileLink) {
1381                     if (action == 'all' || action == 'showstream') {
1382                         // Posts always show on your own friends and profile streams.
1383                         return true;
1384                     }
1385                 }
1386             }
1387
1388             // @fixme tag, group, reply timelines should be feasible as well.
1389             // Mismatch between id-based and name-based user/group links currently complicates
1390             // the lookup, since all our inline mentions contain the absolute links but the
1391             // UI links currently on the page use malleable names.
1392
1393             return false;
1394         },
1395
1396         /**
1397          * Switch to another active input sub-form.
1398          * This will hide the current form (if any), show the new one, and
1399          * update the input type tab selection state.
1400          *
1401          * @param {String} tag
1402          */
1403         switchInputFormTab: function(tag) {
1404             // The one that's current isn't current anymore
1405             $('.input_form_nav_tab.current').removeClass('current');
1406             if (tag == 'placeholder') {
1407                 // Hack: when showing the placeholder, mark the tab
1408                 // as current for 'Status'.
1409                 $('#input_form_nav_status').addClass('current');
1410             } else {
1411                 $('#input_form_nav_'+tag).addClass('current');
1412             }
1413
1414             // Don't remove 'current' if we also have the "nonav" class.
1415             // An example would be the message input form. removing
1416             // 'current' will cause the form to vanish from the page.
1417             var nonav = $('.input_form.current.nonav');
1418             if (nonav.length > 0) {
1419                 return;
1420             }
1421
1422             $('.input_form.current').removeClass('current');
1423             $('#input_form_'+tag)
1424                 .addClass('current')
1425                 .find('.ajax-notice').each(function() {
1426                     var form = $(this);
1427                     SN.Init.NoticeFormSetup(form);
1428                 })
1429                 .find('.notice_data-text').focus();
1430         }
1431     },
1432
1433     Init: {
1434         /**
1435          * If user is logged in, run setup code for the new notice form:
1436          *
1437          *  - char counter
1438          *  - AJAX submission
1439          *  - location events
1440          *  - file upload events
1441          */
1442         NoticeForm: function() {
1443             if ($('body.user_in').length > 0) {
1444                 // SN.Init.NoticeFormSetup() will get run
1445                 // when forms get displayed for the first time...
1446
1447                 // Hack to initialize the placeholder at top
1448                 $('#input_form_placeholder input.placeholder').focus(function() {
1449                     SN.U.switchInputFormTab("status");
1450                 });
1451
1452                 // Make inline reply forms self-close when clicking out.
1453                 $('body').bind('click', function(e) {
1454                     var currentForm = $('#content .input_forms div.current');
1455                     if (currentForm.length > 0) {
1456                         if ($('#content .input_forms').has(e.target).length == 0) {
1457                             // If all fields are empty, switch back to the placeholder.
1458                             var fields = currentForm.find('textarea, input[type=text], input[type=""]');
1459                             var anything = false;
1460                             fields.each(function() {
1461                                 anything = anything || $(this).val();
1462                             });
1463                             if (!anything) {
1464                                 SN.U.switchInputFormTab("placeholder");
1465                             }
1466                         }
1467                     }
1468
1469                     var openReplies = $('li.notice-reply');
1470                     if (openReplies.length > 0) {
1471                         var target = $(e.target);
1472                         openReplies.each(function() {
1473                             // Did we click outside this one?
1474                             var replyItem = $(this);
1475                             if (replyItem.has(e.target).length == 0) {
1476                                 var textarea = replyItem.find('.notice_data-text:first');
1477                                 var cur = $.trim(textarea.val());
1478                                 // Only close if there's been no edit.
1479                                 if (cur == '' || cur == textarea.data('initialText')) {
1480                                     var parentNotice = replyItem.closest('li.notice');
1481                                     replyItem.remove();
1482                                     parentNotice.find('li.notice-reply-placeholder').show();
1483                                 }
1484                             }
1485                         });
1486                     }
1487                 });
1488
1489                 // Infield labels for notice form inputs.
1490                 $('.input_forms fieldset fieldset label').inFieldLabels({ fadeOpacity:0 });
1491
1492             }
1493         },
1494
1495         /**
1496          * Encapsulate notice form setup for a single form.
1497          * Plugins can add extra setup by monkeypatching this
1498          * function.
1499          *
1500          * @param {jQuery} form
1501          */
1502         NoticeFormSetup: function(form) {
1503             if (!form.data('NoticeFormSetup')) {
1504                 SN.U.NoticeLocationAttach(form);
1505                 SN.U.FormNoticeXHR(form);
1506                 SN.U.FormNoticeEnhancements(form);
1507                 SN.U.NoticeDataAttach(form);
1508                 form.data('NoticeFormSetup', true);
1509             }
1510         },
1511
1512         /**
1513          * Run setup code for notice timeline views items:
1514          *
1515          * - AJAX submission for fave/repeat/reply (if logged in)
1516          * - Attachment link extras ('more' links)
1517          */
1518         Notices: function() {
1519             if ($('body.user_in').length > 0) {
1520                 var masterForm = $('.form_notice:first');
1521                 if (masterForm.length > 0) {
1522                     SN.C.I.NoticeFormMaster = document._importNode(masterForm[0], true);
1523                 }
1524                 SN.U.NoticeRepeat();
1525                 SN.U.NoticeReply();
1526                 SN.U.NoticeInlineReplySetup();
1527             }
1528
1529             SN.U.NoticeAttachments();
1530         },
1531
1532         /**
1533          * Run setup code for user & group profile page header area if logged in:
1534          *
1535          * - AJAX submission for sub/unsub/join/leave/nudge
1536          * - AJAX form popup for direct-message
1537          */
1538         EntityActions: function() {
1539             if ($('body.user_in').length > 0) {
1540                 $('.form_user_subscribe').live('click', function() { SN.U.FormXHR($(this)); return false; });
1541                 $('.form_user_unsubscribe').live('click', function() { SN.U.FormXHR($(this)); return false; });
1542                 $('.form_group_join').live('click', function() { SN.U.FormXHR($(this)); return false; });
1543                 $('.form_group_leave').live('click', function() { SN.U.FormXHR($(this)); return false; });
1544                 $('.form_user_nudge').live('click', function() { SN.U.FormXHR($(this)); return false; });
1545                 $('.form_peopletag_subscribe').live('click', function() { SN.U.FormXHR($(this)); return false; });
1546                 $('.form_peopletag_unsubscribe').live('click', function() { SN.U.FormXHR($(this)); return false; });
1547                 $('.form_user_add_peopletag').live('click', function() { SN.U.FormXHR($(this)); return false; });
1548                 $('.form_user_remove_peopletag').live('click', function() { SN.U.FormXHR($(this)); return false; });
1549
1550                 SN.U.NewDirectMessage();
1551             }
1552         },
1553
1554         ProfileSearch: function() {
1555             if ($('body.user_in').length > 0) {
1556                 $('.form_peopletag_edit_user_search input.submit').live('click', function() {
1557                     SN.U.FormProfileSearchXHR($(this).parents('form')); return false;
1558                 });
1559             }
1560         },
1561
1562         /**
1563          * Run setup code for login form:
1564          *
1565          * - loads saved last-used-nickname from cookie
1566          * - sets event handler to save nickname to cookie on submit
1567          *
1568          * @fixme is this necessary? Browsers do their own form saving these days.
1569          */
1570         Login: function() {
1571             if (SN.U.StatusNetInstance.Get() !== null) {
1572                 var nickname = SN.U.StatusNetInstance.Get().Nickname;
1573                 if (nickname !== null) {
1574                     $('#form_login #nickname').val(nickname);
1575                 }
1576             }
1577
1578             $('#form_login').bind('submit', function() {
1579                 SN.U.StatusNetInstance.Set({Nickname: $('#form_login #nickname').val()});
1580                 return true;
1581             });
1582         },
1583
1584         /**
1585          * Called when a people tag edit box is shown in the interface
1586          *
1587          * - loads the jQuery UI autocomplete plugin
1588          * - sets event handlers for tag completion
1589          *
1590          */
1591         PeopletagAutocomplete: function(txtBox) {
1592             var split = function(val) {
1593                 return val.split( /\s+/ );
1594             }
1595             var extractLast = function(term) {
1596                 return split(term).pop();
1597             }
1598
1599             // don't navigate away from the field on tab when selecting an item
1600             txtBox.live( "keydown", function( event ) {
1601                 if ( event.keyCode === $.ui.keyCode.TAB &&
1602                         $(this).data( "autocomplete" ).menu.active ) {
1603                     event.preventDefault();
1604                 }
1605             }).autocomplete({
1606                 minLength: 0,
1607                 source: function(request, response) {
1608                             // delegate back to autocomplete, but extract the last term
1609                             response($.ui.autocomplete.filter(
1610                                     SN.C.PtagACData, extractLast(request.term)));
1611                     },
1612                     focus: function() {
1613                         return false;
1614                 },
1615                     select: function(event, ui) {
1616                             var terms = split(this.value);
1617                             terms.pop();
1618                             terms.push(ui.item.value);
1619                             terms.push("");
1620                             this.value = terms.join(" ");
1621                             return false;
1622                     }
1623             }).data('autocomplete')._renderItem = function(ul, item) {
1624                     // FIXME: with jQuery UI you cannot have it highlight the match
1625                     var _l = '<a class="ptag-ac-line-tag">' + item.tag
1626                           + ' <em class="privacy_mode">' + item.mode + '</em>'
1627                           + '<span class="freq">' + item.freq + '</span></a>'
1628
1629                             return $("<li/>")
1630                                 .addClass('mode-' + item.mode)
1631                             .addClass('ptag-ac-line')
1632                             .data("item.autocomplete", item)
1633                             .append(_l)
1634                             .appendTo(ul);
1635                     }
1636         },
1637
1638         /**
1639          * Run setup for the ajax people tags editor
1640          *
1641          * - show edit button
1642          * - set event handle for click on edit button
1643          *   - loads people tag autocompletion data if not already present
1644          *     or if it is stale.
1645          *
1646          */
1647         PeopleTags: function() {
1648             $('.user_profile_tags .editable').append($('<button class="peopletags_edit_button"/>'));
1649
1650             $('.peopletags_edit_button').live('click', function() {
1651                 var form = $(this).parents('dd').eq(0).find('form');
1652                 // We can buy time from the above animation
1653
1654                 $.ajax({
1655                     url: _peopletagAC,
1656                     dataType: 'json',
1657                     data: {token: $('#token').val()},
1658                     ifModified: true,
1659                     success: function(data) {
1660                         // item.label is used to match
1661                         for (i=0; i < data.length; i++) {
1662                             data[i].label = data[i].tag;
1663                         }
1664
1665                         SN.C.PtagACData = data;
1666                         SN.Init.PeopletagAutocomplete(form.find('#tags'));
1667                     }
1668                 });
1669
1670                 $(this).parents('ul').eq(0).fadeOut(200, function() {form.fadeIn(200).find('input#tags')});
1671             });
1672
1673             $('.user_profile_tags form .submit').live('click', function() {
1674                 SN.U.FormPeopletagsXHR($(this).parents('form')); return false;
1675             });
1676         },
1677
1678         /**
1679          * Set up any generic 'ajax' form so it submits via AJAX with auto-replacement.
1680          */
1681         AjaxForms: function() {
1682             $('form.ajax').live('submit', function() {
1683                 SN.U.FormXHR($(this));
1684                 return false;
1685             });
1686             $('form.ajax input[type=submit]').live('click', function() {
1687                 // Some forms rely on knowing which submit button was clicked.
1688                 // Save a hidden input field which'll be picked up during AJAX
1689                 // submit...
1690                 var button = $(this);
1691                 var form = button.closest('form');
1692                 form.find('.hidden-submit-button').remove();
1693                 $('<input class="hidden-submit-button" type="hidden" />')
1694                     .attr('name', button.attr('name'))
1695                     .val(button.val())
1696                     .appendTo(form);
1697             });
1698         },
1699
1700         /**
1701          * Add logic to any file upload forms to handle file size limits,
1702          * on browsers that support basic FileAPI.
1703          */
1704         UploadForms: function () {
1705             $('input[type=file]').change(function(event) {
1706                 if (typeof this.files == "object" && this.files.length > 0) {
1707                     var size = 0;
1708                     for (var i = 0; i < this.files.length; i++) {
1709                         size += this.files[i].size;
1710                     }
1711
1712                     var max = SN.U.maxFileSize($(this.form));
1713                     if (max > 0 && size > max) {
1714                         var msg = 'File too large: maximum upload size is %d bytes.';
1715                         alert(msg.replace('%d', max));
1716
1717                         // Clear the files.
1718                         $(this).val('');
1719                         event.preventDefault();
1720                         return false;
1721                     }
1722                 }
1723             });
1724         },
1725
1726         CheckBoxes: function() {
1727             $("span[class='checkbox-wrapper']").addClass("unchecked");
1728             $(".checkbox-wrapper").click(function(){
1729                 if($(this).children("input").attr("checked")){
1730                     // uncheck
1731                     $(this).children("input").attr({checked: ""});
1732                     $(this).removeClass("checked");
1733                     $(this).addClass("unchecked");
1734                     $(this).children("label").text("Private?");
1735                 }else{
1736                     // check
1737                     $(this).children("input").attr({checked: "checked"});
1738                     $(this).removeClass("unchecked");
1739                     $(this).addClass("checked");
1740                     $(this).children("label").text("Private");
1741                 }
1742             });
1743         }
1744     }
1745 };
1746
1747 /**
1748  * Run initialization functions on DOM-ready.
1749  *
1750  * Note that if we're waiting on other scripts to load, this won't happen
1751  * until that's done. To load scripts asynchronously without delaying setup,
1752  * don't start them loading until after DOM-ready time!
1753  */
1754 $(document).ready(function(){
1755     SN.Init.AjaxForms();
1756     SN.Init.UploadForms();
1757     SN.Init.CheckBoxes();
1758     if ($('.'+SN.C.S.FormNotice).length > 0) {
1759         SN.Init.NoticeForm();
1760     }
1761     if ($('#content .notices').length > 0) {
1762         SN.Init.Notices();
1763     }
1764     if ($('#content .entity_actions').length > 0) {
1765         SN.Init.EntityActions();
1766     }
1767     if ($('#form_login').length > 0) {
1768         SN.Init.Login();
1769     }
1770     if ($('#profile_search_results').length > 0) {
1771         SN.Init.ProfileSearch();
1772     }
1773     if ($('.user_profile_tags .editable').length > 0) {
1774         SN.Init.PeopleTags();
1775     }
1776 });
1777