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         },
  36
  37         /**
  38          * @fixme are these worth the trouble? They seem to mostly just duplicate
  39          * themselves while slightly obscuring the actual selector, so it's hard
  40          * to pop over to the HTML and find something.
  41          *
  42          * In theory, minification could reduce them to shorter variable names,
  43          * but at present that doesn't happen with yui-compressor.
  44          */
  45         S: { // Selector
  46             Disabled: 'disabled',
  47             Warning: 'warning',
  48             Error: 'error',
  49             Success: 'success',
  50             Processing: 'processing',
  51             CommandResult: 'command_result',
  52             FormNotice: 'form_notice',
  53             NoticeDataText: 'notice_data-text',
  54             NoticeTextCount: 'notice_text-count',
  55             NoticeInReplyTo: 'notice_in-reply-to',
  56             NoticeDataAttach: 'notice_data-attach',
  57             NoticeDataAttachSelected: 'notice_data-attach_selected',
  58             NoticeActionSubmit: 'notice_action-submit',
  59             NoticeLat: 'notice_data-lat',
  60             NoticeLon: 'notice_data-lon',
  61             NoticeLocationId: 'notice_data-location_id',
  62             NoticeLocationNs: 'notice_data-location_ns',
  63             NoticeGeoName: 'notice_data-geo_name',
  64             NoticeDataGeo: 'notice_data-geo',
  65             NoticeDataGeoCookie: 'NoticeDataGeo',
  66             NoticeDataGeoSelected: 'notice_data-geo_selected',
  67             StatusNetInstance:'StatusNetInstance'
  68         }
  69     },
  70
  71     /**
  72      * Map of localized message strings exported to script from the PHP
  73      * side via Action::getScriptMessages().
  74      *
  75      * Retrieve them via SN.msg(); this array is an implementation detail.
  76      *
  77      * @access private
  78      */
  79     messages: {},
  80
  81     /**
  82      * Grabs a localized string that's been previously exported to us
  83      * from server-side code via Action::getScriptMessages().
  84      *
  85      * @example alert(SN.msg('coolplugin-failed'));
  86      *
  87      * @param {String} key: string key name to pull from message index
  88      * @return matching localized message string
  89      */
  90     msg: function(key) {
  91         if (typeof SN.messages[key] == "undefined") {
  92             return '[' + key + ']';
  93         } else {
  94             return SN.messages[key];
  95         }
  96     },
  97
  98     U: { // Utils
  99         /**
 100          * Setup function -- DOES NOT trigger actions immediately.
 101          *
 102          * Sets up event handlers on the new notice form.
 103          *
 104          * @param {jQuery} form: jQuery object whose first matching element is the form
 105          * @access private
 106          */
 107         FormNoticeEnhancements: function(form) {
 108             if (jQuery.data(form[0], 'ElementData') === undefined) {
 109                 MaxLength = form.find('#'+SN.C.S.NoticeTextCount).text();
 110                 if (typeof(MaxLength) == 'undefined') {
 111                      MaxLength = SN.C.I.MaxLength;
 112                 }
 113                 jQuery.data(form[0], 'ElementData', {MaxLength:MaxLength});
 114
 115                 SN.U.Counter(form);
 116
 117                 NDT = form.find('#'+SN.C.S.NoticeDataText);
 118
 119                 NDT.bind('keyup', function(e) {
 120                     SN.U.Counter(form);
 121                 });
 122
 123                 var delayedUpdate= function(e) {
 124                     // Cut and paste events fire *before* the operation,
 125                     // so we need to trigger an update in a little bit.
 126                     // This would be so much easier if the 'change' event
 127                     // actually fired every time the value changed. :P
 128                     window.setTimeout(function() {
 129                         SN.U.Counter(form);
 130                     }, 50);
 131                 };
 132                 // Note there's still no event for mouse-triggered 'delete'.
 133                 NDT.bind('cut', delayedUpdate)
 134                    .bind('paste', delayedUpdate);
 135             }
 136             else {
 137                 form.find('#'+SN.C.S.NoticeTextCount).text(jQuery.data(form[0], 'ElementData').MaxLength);
 138             }
 139
 140             if ($('body')[0].id != 'conversation' && window.location.hash.length === 0 && $(window).scrollTop() == 0) {
 141                 form.find('textarea').focus();
 142             }
 143         },
 144
 145         /**
 146          * To be called from event handlers on the notice import form.
 147          * Triggers an update of the remaining-characters counter.
 148          *
 149          * Additional counter updates will be suppressed during the
 150          * next half-second to avoid flooding the layout engine with
 151          * updates, followed by another automatic check.
 152          *
 153          * The maximum length is pulled from data established by
 154          * FormNoticeEnhancements.
 155          *
 156          * @param {jQuery} form: jQuery object whose first element is the notice posting form
 157          * @access private
 158          */
 159         Counter: function(form) {
 160             SN.C.I.FormNoticeCurrent = form;
 161
 162             var MaxLength = jQuery.data(form[0], 'ElementData').MaxLength;
 163
 164             if (MaxLength <= 0) {
 165                 return;
 166             }
 167
 168             var remaining = MaxLength - SN.U.CharacterCount(form);
 169             var counter = form.find('#'+SN.C.S.NoticeTextCount);
 170
 171             if (remaining.toString() != counter.text()) {
 172                 if (!SN.C.I.CounterBlackout || remaining === 0) {
 173                     if (counter.text() != String(remaining)) {
 174                         counter.text(remaining);
 175                     }
 176                     if (remaining < 0) {
 177                         form.addClass(SN.C.S.Warning);
 178                     } else {
 179                         form.removeClass(SN.C.S.Warning);
 180                     }
 181                     // Skip updates for the next 500ms.
 182                     // On slower hardware, updating on every keypress is unpleasant.
 183                     if (!SN.C.I.CounterBlackout) {
 184                         SN.C.I.CounterBlackout = true;
 185                         SN.C.I.FormNoticeCurrent = form;
 186                         window.setTimeout("SN.U.ClearCounterBlackout(SN.C.I.FormNoticeCurrent);", 500);
 187                     }
 188                 }
 189             }
 190         },
 191
 192         /**
 193          * Pull the count of characters in the current edit field.
 194          * Plugins replacing the edit control may need to override this.
 195          *
 196          * @param {jQuery} form: jQuery object whose first element is the notice posting form
 197          * @return number of chars
 198          */
 199         CharacterCount: function(form) {
 200             return form.find('#'+SN.C.S.NoticeDataText).val().length;
 201         },
 202
 203         /**
 204          * Called internally after the counter update blackout period expires;
 205          * runs another update to make sure we didn't miss anything.
 206          *
 207          * @param {jQuery} form: jQuery object whose first element is the notice posting form
 208          * @access private
 209          */
 210         ClearCounterBlackout: function(form) {
 211             // Allow keyup events to poke the counter again
 212             SN.C.I.CounterBlackout = false;
 213             // Check if the string changed since we last looked
 214             SN.U.Counter(form);
 215         },
 216
 217         /**
 218          * Helper function to rewrite default HTTP form action URLs to HTTPS
 219          * so we can actually fetch them when on an SSL page in ssl=sometimes
 220          * mode.
 221          *
 222          * It would be better to output URLs that didn't hardcode protocol
 223          * and hostname in the first place...
 224          *
 225          * @param {String} url
 226          * @return string
 227          */
 228         RewriteAjaxAction: function(url) {
 229             // Quick hack: rewrite AJAX submits to HTTPS if they'd fail otherwise.
 230             if (document.location.protocol == 'https:' && url.substr(0, 5) == 'http:') {
 231                 return url.replace(/^http:\/\/[^:\/]+/, 'https://' + document.location.host);
 232             } else {
 233                 return url;
 234             }
 235         },
 236
 237         /**
 238          * Grabs form data and submits it asynchronously, with 'ajax=1'
 239          * parameter added to the rest.
 240          *
 241          * If a successful response includes another form, that form
 242          * will be extracted and copied in, replacing the original form.
 243          * If there's no form, the first paragraph will be used.
 244          *
 245          * @fixme can sometimes explode confusingly if returnd data is bogus
 246          * @fixme error handling is pretty vague
 247          * @fixme can't submit file uploads
 248          *
 249          * @param {jQuery} form: jQuery object whose first element is a form
 250          *
 251          * @access public
 252          */
 253         FormXHR: function(form) {
 254             $.ajax({
 255                 type: 'POST',
 256                 dataType: 'xml',
 257                 url: SN.U.RewriteAjaxAction(form.attr('action')),
 258                 data: form.serialize() + '&ajax=1',
 259                 beforeSend: function(xhr) {
 260                     form
 261                         .addClass(SN.C.S.Processing)
 262                         .find('.submit')
 263                             .addClass(SN.C.S.Disabled)
 264                             .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 265                 },
 266                 error: function (xhr, textStatus, errorThrown) {
 267                     alert(errorThrown || textStatus);
 268                 },
 269                 success: function(data, textStatus) {
 270                     if (typeof($('form', data)[0]) != 'undefined') {
 271                         form_new = document._importNode($('form', data)[0], true);
 272                         form.replaceWith(form_new);
 273                     }
 274                     else {
 275                         form.replaceWith(document._importNode($('p', data)[0], true));
 276                     }
 277                 }
 278             });
 279         },
 280
 281         /**
 282          * Setup function -- DOES NOT trigger actions immediately.
 283          *
 284          * Sets up event handlers for special-cased async submission of the
 285          * notice-posting form, including some pre-post validation.
 286          *
 287          * Unlike FormXHR() this does NOT submit the form immediately!
 288          * It sets up event handlers so that any method of submitting the
 289          * form (click on submit button, enter, submit() etc) will trigger
 290          * it properly.
 291          *
 292          * Also unlike FormXHR(), this system will use a hidden iframe
 293          * automatically to handle file uploads via <input type="file">
 294          * controls.
 295          *
 296          * @fixme tl;dr
 297          * @fixme vast swaths of duplicate code and really long variable names clutter this function up real bad
 298          * @fixme error handling is unreliable
 299          * @fixme cookieValue is a global variable, but probably shouldn't be
 300          * @fixme saving the location cache cookies should be split out
 301          * @fixme some error messages are hardcoded english: needs i18n
 302          * @fixme special-case for bookmarklet is confusing and uses a global var "self". Is this ok?
 303          *
 304          * @param {jQuery} form: jQuery object whose first element is a form
 305          *
 306          * @access public
 307          */
 308         FormNoticeXHR: function(form) {
 309             SN.C.I.NoticeDataGeo = {};
 310             form.append('<input type="hidden" name="ajax" value="1"/>');
 311
 312             // Make sure we don't have a mixed HTTP/HTTPS submission...
 313             form.attr('action', SN.U.RewriteAjaxAction(form.attr('action')));
 314
 315             /**
 316              * Show a response feedback bit under the new-notice dialog.
 317              *
 318              * @param {String} cls: CSS class name to use ('error' or 'success')
 319              * @param {String} text
 320              * @access private
 321              */
 322             var showFeedback = function(cls, text) {
 323                 form.append(
 324                     $('<p class="form_response"></p>')
 325                         .addClass(cls)
 326                         .text(text)
 327                 );
 328             };
 329
 330             /**
 331              * Hide the previous response feedback, if any.
 332              */
 333             var removeFeedback = function() {
 334                 form.find('.form_response').remove();
 335             };
 336
 337             form.ajaxForm({
 338                 dataType: 'xml',
 339                 timeout: '60000',
 340                 beforeSend: function(formData) {
 341                     if (form.find('#'+SN.C.S.NoticeDataText)[0].value.length === 0) {
 342                         form.addClass(SN.C.S.Warning);
 343                         return false;
 344                     }
 345                     form
 346                         .addClass(SN.C.S.Processing)
 347                         .find('#'+SN.C.S.NoticeActionSubmit)
 348                             .addClass(SN.C.S.Disabled)
 349                             .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 350
 351                     SN.U.normalizeGeoData(form);
 352
 353                     return true;
 354                 },
 355                 error: function (xhr, textStatus, errorThrown) {
 356                     form
 357                         .removeClass(SN.C.S.Processing)
 358                         .find('#'+SN.C.S.NoticeActionSubmit)
 359                             .removeClass(SN.C.S.Disabled)
 360                             .removeAttr(SN.C.S.Disabled, SN.C.S.Disabled);
 361                     removeFeedback();
 362                     if (textStatus == 'timeout') {
 363                         // @fixme i18n
 364                         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.');
 365                     }
 366                     else {
 367                         var response = SN.U.GetResponseXML(xhr);
 368                         if ($('.'+SN.C.S.Error, response).length > 0) {
 369                             form.append(document._importNode($('.'+SN.C.S.Error, response)[0], true));
 370                         }
 371                         else {
 372                             if (parseInt(xhr.status) === 0 || jQuery.inArray(parseInt(xhr.status), SN.C.I.HTTP20x30x) >= 0) {
 373                                 form
 374                                     .resetForm()
 375                                     .find('#'+SN.C.S.NoticeDataAttachSelected).remove();
 376                                 SN.U.FormNoticeEnhancements(form);
 377                             }
 378                             else {
 379                                 // @fixme i18n
 380                                 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.');
 381                             }
 382                         }
 383                     }
 384                 },
 385                 success: function(data, textStatus) {
 386                     removeFeedback();
 387                     var errorResult = $('#'+SN.C.S.Error, data);
 388                     if (errorResult.length > 0) {
 389                         showFeedback('error', errorResult.text());
 390                     }
 391                     else {
 392                         if($('body')[0].id == 'bookmarklet') {
 393                             // @fixme self is not referenced anywhere?
 394                             self.close();
 395                         }
 396
 397                         var commandResult = $('#'+SN.C.S.CommandResult, data);
 398                         if (commandResult.length > 0) {
 399                             showFeedback('success', commandResult.text());
 400                         }
 401                         else {
 402                             // New notice post was successful. If on our timeline, show it!
 403                             var notice = document._importNode($('li', data)[0], true);
 404                             var notices = $('#notices_primary .notices:first');
 405                             if (notices.length > 0 && SN.U.belongsOnTimeline(notice)) {
 406                                 if ($('#'+notice.id).length === 0) {
 407                                     var notice_irt_value = $('#'+SN.C.S.NoticeInReplyTo).val();
 408                                     var notice_irt = '#notices_primary #notice-'+notice_irt_value;
 409                                     if($('body')[0].id == 'conversation') {
 410                                         if(notice_irt_value.length > 0 && $(notice_irt+' .notices').length < 1) {
 411                                             $(notice_irt).append('<ul class="notices"></ul>');
 412                                         }
 413                                         $($(notice_irt+' .notices')[0]).append(notice);
 414                                     }
 415                                     else {
 416                                         notices.prepend(notice);
 417                                     }
 418                                     $('#'+notice.id)
 419                                         .css({display:'none'})
 420                                         .fadeIn(2500);
 421                                     SN.U.NoticeWithAttachment($('#'+notice.id));
 422                                     SN.U.NoticeReplyTo($('#'+notice.id));
 423                                 }
 424                             }
 425                             else {
 426                                 // Not on a timeline that this belongs on?
 427                                 // Just show a success message.
 428                                 showFeedback('success', $('title', data).text());
 429                             }
 430                         }
 431                         form.resetForm();
 432                         form.find('#'+SN.C.S.NoticeInReplyTo).val('');
 433                         form.find('#'+SN.C.S.NoticeDataAttachSelected).remove();
 434                         SN.U.FormNoticeEnhancements(form);
 435                     }
 436                 },
 437                 complete: function(xhr, textStatus) {
 438                     form
 439                         .removeClass(SN.C.S.Processing)
 440                         .find('#'+SN.C.S.NoticeActionSubmit)
 441                             .removeAttr(SN.C.S.Disabled)
 442                             .removeClass(SN.C.S.Disabled);
 443
 444                     $('#'+SN.C.S.NoticeLat).val(SN.C.I.NoticeDataGeo.NLat);
 445                     $('#'+SN.C.S.NoticeLon).val(SN.C.I.NoticeDataGeo.NLon);
 446                     if ($('#'+SN.C.S.NoticeLocationNs)) {
 447                         $('#'+SN.C.S.NoticeLocationNs).val(SN.C.I.NoticeDataGeo.NLNS);
 448                         $('#'+SN.C.S.NoticeLocationId).val(SN.C.I.NoticeDataGeo.NLID);
 449                     }
 450                     $('#'+SN.C.S.NoticeDataGeo).attr('checked', SN.C.I.NoticeDataGeo.NDG);
 451                 }
 452             });
 453         },
 454
 455         normalizeGeoData: function(form) {
 456             SN.C.I.NoticeDataGeo.NLat = form.find('[name=lat]').val();
 457             SN.C.I.NoticeDataGeo.NLon = form.find('[name=lon]').val();
 458             SN.C.I.NoticeDataGeo.NLNS = form.find('[name=location_ns]').val();
 459             SN.C.I.NoticeDataGeo.NLID = form.find('[name=location_id]').val();
 460             SN.C.I.NoticeDataGeo.NDG = $('#'+SN.C.S.NoticeDataGeo).attr('checked'); // @fixme
 461
 462             var cookieValue = $.cookie(SN.C.S.NoticeDataGeoCookie);
 463
 464             if (cookieValue !== null && cookieValue != 'disabled') {
 465                 cookieValue = JSON.parse(cookieValue);
 466                 SN.C.I.NoticeDataGeo.NLat = form.find('[name=lat]').val(cookieValue.NLat).val();
 467                 SN.C.I.NoticeDataGeo.NLon = form.find('[name=lon]').val(cookieValue.NLon).val();
 468                 if (cookieValue.NLNS) {
 469                     SN.C.I.NoticeDataGeo.NLNS = form.find('[name=location_ns]').val(cookieValue.NLNS).val();
 470                     SN.C.I.NoticeDataGeo.NLID = form.find('[name=location_id]').val(cookieValue.NLID).val();
 471                 } else {
 472                     form.find('[name=location_ns]').val('');
 473                     form.find('[name=location_id]').val('');
 474                 }
 475             }
 476             if (cookieValue == 'disabled') {
 477                 SN.C.I.NoticeDataGeo.NDG = $('#'+SN.C.S.NoticeDataGeo).attr('checked', false).attr('checked');
 478             }
 479             else {
 480                 SN.C.I.NoticeDataGeo.NDG = $('#'+SN.C.S.NoticeDataGeo).attr('checked', true).attr('checked');
 481             }
 482
 483         },
 484         /**
 485          * Fetch an XML DOM from an XHR's response data.
 486          *
 487          * Works around unavailable responseXML when document.domain
 488          * has been modified by Meteor or other tools, in some but not
 489          * all browsers.
 490          *
 491          * @param {XMLHTTPRequest} xhr
 492          * @return DOMDocument
 493          */
 494         GetResponseXML: function(xhr) {
 495             try {
 496                 return xhr.responseXML;
 497             } catch (e) {
 498                 return (new DOMParser()).parseFromString(xhr.responseText, "text/xml");
 499             }
 500         },
 501
 502         /**
 503          * Setup function -- DOES NOT trigger actions immediately.
 504          *
 505          * Sets up event handlers on all visible notice's reply buttons to
 506          * tweak the new-notice form with needed variables and focus it
 507          * when pushed.
 508          *
 509          * (This replaces the default reply button behavior to submit
 510          * directly to a form which comes back with a specialized page
 511          * with the form data prefilled.)
 512          *
 513          * @access private
 514          */
 515         NoticeReply: function() {
 516             if ($('#'+SN.C.S.NoticeDataText).length > 0 && $('#content .notice_reply').length > 0) {
 517                 $('#content .notice').each(function() { SN.U.NoticeReplyTo($(this)); });
 518             }
 519         },
 520
 521         /**
 522          * Setup function -- DOES NOT trigger actions immediately.
 523          *
 524          * Sets up event handlers on the given notice's reply button to
 525          * tweak the new-notice form with needed variables and focus it
 526          * when pushed.
 527          *
 528          * (This replaces the default reply button behavior to submit
 529          * directly to a form which comes back with a specialized page
 530          * with the form data prefilled.)
 531          *
 532          * @param {jQuery} notice: jQuery object containing one or more notices
 533          * @access private
 534          */
 535         NoticeReplyTo: function(notice) {
 536             notice.find('.notice_reply').live('click', function(e) {
 537                 e.preventDefault();
 538                 var nickname = ($('.author .nickname', notice).length > 0) ? $($('.author .nickname', notice)[0]) : $('.author .nickname.uid');
 539                 /* SN.U.NoticeReplySet(nickname.text(), $($('.notice_id', notice)[0]).text()); */
 540                 SN.U.NoticeInlineReplyTrigger(notice, '@' + nickname.text());
 541                 return false;
 542             });
 543         },
 544
 545         /**
 546          * Open up a notice's inline reply box.
 547          *
 548          * @param {jQuery} notice: jQuery object containing one notice
 549          * @param {String} initialText
 550          */
 551         NoticeInlineReplyTrigger: function(notice, initialText) {
 552             // Find the notice we're replying to...
 553             var id = $($('.notice_id', notice)[0]).text();
 554             var parentNotice = notice;
 555
 556             // Find the threaded replies view we'll be adding to...
 557             var list = notice.closest('.notices');
 558             if (list.hasClass('threaded-replies')) {
 559                 // We're replying to a reply; use reply form on the end of this list.
 560                 // We'll add our form at the end of this; grab the root notice.
 561                 parentNotice = list.closest('.notice');
 562             } else {
 563                 // We're replying to a parent notice; pull its threaded list
 564                 // and we'll add on the end of it. Will add if needed.
 565                 list = $('ul.threaded-replies', notice);
 566                 if (list.length == 0) {
 567                     list = $('<ul class="notices threaded-replies xoxo"></ul>');
 568                     notice.append(list);
 569                 }
 570             }
 571
 572             // See if the form's already open...
 573             var replyForm = $('.notice-reply-form', list);
 574             if (replyForm.length == 0) {
 575                 // Remove placeholder if any
 576                 $('li.notice-reply-placeholder').remove();
 577
 578                 // Create the reply form entry at the end
 579                 var replyItem = $('li.notice-reply', list);
 580                 if (replyItem.length == 0) {
 581                     replyItem = $('<li class="notice-reply">' +
 582                                       '<form class="notice-reply-form" method="post">' +
 583                                           '<textarea name="status_textarea"></textarea>' +
 584                                           '<div class="controls">' +
 585                                           '<input type="hidden" name="token">' +
 586                                           '<input type="hidden" name="inreplyto">' +
 587                                           '<input type="submit" class="submit">' +
 588                                       '</div>' +
 589                                       '</form>' +
 590                                   '</li>');
 591
 592                     var baseForm = $('#form_notice');
 593                     replyForm = replyItem.find('form');
 594                     replyForm.attr('action', baseForm.attr('action'));
 595                     replyForm.find('input[name="token"]').val(baseForm.find('input[name=token]').val());
 596                     replyForm.find('input[type="submit"]').val(SN.msg('reply_submit'));
 597                     list.append(replyItem);
 598
 599                     replyForm.find('textarea').blur(function() {
 600                         var textarea = $(this);
 601                         var txt = $.trim(textarea.val());
 602                         if (txt == '' || txt == textarea.data('initialText')) {
 603                             // Nothing to say? Begone!
 604                             replyItem.remove();
 605                             if (list.find('li').length > 0) {
 606                                 SN.U.NoticeInlineReplyPlaceholder(parentNotice);
 607                             } else {
 608                                 list.remove();
 609                             }
 610                         }
 611                     });
 612                     replyForm.submit(function(event) {
 613                         var form = replyForm;
 614                         $.ajax({
 615                             type: 'POST',
 616                             dataType: 'xml',
 617                             url: SN.U.RewriteAjaxAction(form.attr('action')),
 618                             data: form.serialize() + '&ajax=1',
 619                             beforeSend: function(xhr) {
 620                                 form
 621                                     .addClass(SN.C.S.Processing)
 622                                     .find('.submit')
 623                                         .addClass(SN.C.S.Disabled)
 624                                         .attr(SN.C.S.Disabled, SN.C.S.Disabled)
 625                                         .end()
 626                                     .find('textarea')
 627                                         .addClass(SN.C.S.Disabled)
 628                                         .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 629                             },
 630                             error: function (xhr, textStatus, errorThrown) {
 631                                 alert(errorThrown || textStatus);
 632                             },
 633                             success: function(data, textStatus) {
 634                                 var orig_li = $('li', data)[0];
 635                                 if (orig_li) {
 636                                     var li = document._importNode(orig_li, true);
 637                                     var id = $(li).attr('id');
 638                                     if ($("#"+id).length == 0) {
 639                                         replyItem.replaceWith(li);
 640                                         SN.U.NoticeInlineReplyPlaceholder(parentNotice);
 641                                     } else {
 642                                         // Realtime came through before us...
 643                                         replyItem.remove();
 644                                     }
 645                                 }
 646                             }
 647                         });
 648                         event.preventDefault();
 649                         return false;
 650                     });
 651                 }
 652             }
 653
 654             // Override...?
 655             replyForm.find('input[name=inreplyto]').val(id);
 656
 657             // Set focus...
 658             var text = replyForm.find('textarea');
 659             if (text.length == 0) {
 660                 throw "No textarea";
 661             }
 662             var replyto = '';
 663             if (initialText) {
 664                 replyto = initialText + ' ';
 665             }
 666             text.val(replyto + text.val().replace(RegExp(replyto, 'i'), ''));
 667             text.data('initialText', $.trim(initialText + ''));
 668             text.focus();
 669             if (text[0].setSelectionRange) {
 670                 var len = text.val().length;
 671                 text[0].setSelectionRange(len,len);
 672             }
 673         },
 674
 675         /**
 676          * FIXME OBSOLETE?
 677          * Updates the new notice posting form with bits for replying to the
 678          * given user. Adds replyto parameter to the form, and a "@foo" to the
 679          * text area.
 680          *
 681          * @fixme replyto is a global variable, but probably shouldn't be
 682          *
 683          * @param {String} nick
 684          * @param {String} id
 685          */
 686         NoticeReplySet: function(nick,id) {
 687             if (nick.match(SN.C.I.PatternUsername)) {
 688                 var text = $('#'+SN.C.S.NoticeDataText);
 689                 if (text.length > 0) {
 690                     replyto = '@' + nick + ' ';
 691                     text.val(replyto + text.val().replace(RegExp(replyto, 'i'), ''));
 692                     $('#'+SN.C.S.FormNotice+' #'+SN.C.S.NoticeInReplyTo).val(id);
 693
 694                     text[0].focus();
 695                     if (text[0].setSelectionRange) {
 696                         var len = text.val().length;
 697                         text[0].setSelectionRange(len,len);
 698                     }
 699                 }
 700             }
 701         },
 702
 703         /**
 704          * Setup function -- DOES NOT apply immediately.
 705          *
 706          * Sets up event handlers for favor/disfavor forms to submit via XHR.
 707          * Uses 'live' rather than 'bind', so applies to future as well as present items.
 708          */
 709         NoticeFavor: function() {
 710             $('.form_favor').live('click', function() { SN.U.FormXHR($(this)); return false; });
 711             $('.form_disfavor').live('click', function() { SN.U.FormXHR($(this)); return false; });
 712         },
 713
 714         NoticeInlineReplyPlaceholder: function(notice) {
 715             var list = notice.find('ul.threaded-replies');
 716             var placeholder = $('<li class="notice-reply-placeholder">' +
 717                                     '<input class="placeholder">' +
 718                                 '</li>');
 719             placeholder.click(function() {
 720                 SN.U.NoticeInlineReplyTrigger(notice);
 721             });
 722             placeholder.find('input').val(SN.msg('reply_placeholder'));
 723             list.append(placeholder);
 724         },
 725
 726         /**
 727          * Setup function -- DOES NOT apply immediately.
 728          *
 729          * Sets up event handlers for favor/disfavor forms to submit via XHR.
 730          * Uses 'live' rather than 'bind', so applies to future as well as present items.
 731          */
 732         NoticeInlineReplySetup: function() {
 733             $('.threaded-replies').each(function() {
 734                 var list = $(this);
 735                 var notice = list.closest('.notice');
 736                 SN.U.NoticeInlineReplyPlaceholder(notice);
 737             });
 738         },
 739
 740         /**
 741          * Setup function -- DOES NOT trigger actions immediately.
 742          *
 743          * Sets up event handlers for repeat forms to toss up a confirmation
 744          * popout before submitting.
 745          *
 746          * Uses 'live' rather than 'bind', so applies to future as well as present items.
 747          */
 748         NoticeRepeat: function() {
 749             $('.form_repeat').live('click', function(e) {
 750                 e.preventDefault();
 751
 752                 SN.U.NoticeRepeatConfirmation($(this));
 753                 return false;
 754             });
 755         },
 756
 757         /**
 758          * Shows a confirmation dialog box variant of the repeat button form.
 759          * This seems to use a technique where the repeat form contains
 760          * _both_ a standalone button _and_ text and buttons for a dialog.
 761          * The dialog will close after its copy of the form is submitted,
 762          * or if you click its 'close' button.
 763          *
 764          * The dialog is created by duplicating the original form and changing
 765          * its style; while clever, this is hard to generalize and probably
 766          * duplicates a lot of unnecessary HTML output.
 767          *
 768          * @fixme create confirmation dialogs through a generalized interface
 769          * that can be reused instead of hardcoded text and styles.
 770          *
 771          * @param {jQuery} form
 772          */
 773         NoticeRepeatConfirmation: function(form) {
 774             var submit_i = form.find('.submit');
 775
 776             var submit = submit_i.clone();
 777             submit
 778                 .addClass('submit_dialogbox')
 779                 .removeClass('submit');
 780             form.append(submit);
 781             submit.bind('click', function() { SN.U.FormXHR(form); return false; });
 782
 783             submit_i.hide();
 784
 785             form
 786                 .addClass('dialogbox')
 787                 .append('<button class="close">&#215;</button>')
 788                 .closest('.notice-options')
 789                     .addClass('opaque');
 790
 791             form.find('button.close').click(function(){
 792                 $(this).remove();
 793
 794                 form
 795                     .removeClass('dialogbox')
 796                     .closest('.notice-options')
 797                         .removeClass('opaque');
 798
 799                 form.find('.submit_dialogbox').remove();
 800                 form.find('.submit').show();
 801
 802                 return false;
 803             });
 804         },
 805
 806         /**
 807          * Setup function -- DOES NOT trigger actions immediately.
 808          *
 809          * Goes through all notices currently displayed and sets up attachment
 810          * handling if needed.
 811          */
 812         NoticeAttachments: function() {
 813             $('.notice a.attachment').each(function() {
 814                 SN.U.NoticeWithAttachment($(this).closest('.notice'));
 815             });
 816         },
 817
 818         /**
 819          * Setup function -- DOES NOT trigger actions immediately.
 820          *
 821          * Sets up special attachment link handling if needed. Currently this
 822          * consists only of making the "more" button used for OStatus message
 823          * cropping turn into an auto-expansion button that loads the full
 824          * text from an attachment file.
 825          *
 826          * @param {jQuery} notice
 827          */
 828         NoticeWithAttachment: function(notice) {
 829             if (notice.find('.attachment').length === 0) {
 830                 return;
 831             }
 832
 833             var attachment_more = notice.find('.attachment.more');
 834             if (attachment_more.length > 0) {
 835                 $(attachment_more[0]).click(function() {
 836                     var m = $(this);
 837                     m.addClass(SN.C.S.Processing);
 838                     $.get(m.attr('href')+'/ajax', null, function(data) {
 839                         m.parent('.entry-content').html($(data).find('#attachment_view .entry-content').html());
 840                     });
 841
 842                     return false;
 843                 }).attr('title', SN.msg('showmore_tooltip'));
 844             }
 845         },
 846
 847         /**
 848          * Setup function -- DOES NOT trigger actions immediately.
 849          *
 850          * Sets up event handlers for the file-attachment widget in the
 851          * new notice form. When a file is selected, a box will be added
 852          * below the text input showing the filename and, if supported
 853          * by the browser, a thumbnail preview.
 854          *
 855          * This preview box will also allow removing the attachment
 856          * prior to posting.
 857          */
 858         NoticeDataAttach: function() {
 859             NDA = $('#'+SN.C.S.NoticeDataAttach);
 860             NDA.change(function(event) {
 861                 var filename = $(this).val();
 862                 if (!filename) {
 863                     // No file -- we've been tricked!
 864                     $('#'+SN.C.S.NoticeDataAttachSelected).remove();
 865                     return false;
 866                 }
 867
 868                 // @fixme appending filename straight in is potentially unsafe
 869                 S = '<div id="'+SN.C.S.NoticeDataAttachSelected+'" class="'+SN.C.S.Success+'"><code>'+filename+'</code> <button class="close">&#215;</button></div>';
 870                 NDAS = $('#'+SN.C.S.NoticeDataAttachSelected);
 871                 if (NDAS.length > 0) {
 872                     NDAS.replaceWith(S);
 873                 }
 874                 else {
 875                     $('#'+SN.C.S.FormNotice).append(S);
 876                 }
 877                 $('#'+SN.C.S.NoticeDataAttachSelected+' button').click(function(){
 878                     $('#'+SN.C.S.NoticeDataAttachSelected).remove();
 879                     NDA.val('');
 880
 881                     return false;
 882                 });
 883                 if (typeof this.files == "object") {
 884                     // Some newer browsers will let us fetch the files for preview.
 885                     for (var i = 0; i < this.files.length; i++) {
 886                         SN.U.PreviewAttach(this.files[i]);
 887                     }
 888                 }
 889             });
 890         },
 891
 892         /**
 893          * Get PHP's MAX_FILE_SIZE setting for this form;
 894          * used to apply client-side file size limit checks.
 895          *
 896          * @param {jQuery} form
 897          * @return int max size in bytes; 0 or negative means no limit
 898          */
 899         maxFileSize: function(form) {
 900             var max = $(form).find('input[name=MAX_FILE_SIZE]').attr('value');
 901             if (max) {
 902                 return parseInt(max);
 903             } else {
 904                 return 0;
 905             }
 906         },
 907
 908         /**
 909          * For browsers with FileAPI support: make a thumbnail if possible,
 910          * and append it into the attachment display widget.
 911          *
 912          * Known good:
 913          * - Firefox 3.6.6, 4.0b7
 914          * - Chrome 8.0.552.210
 915          *
 916          * Known ok metadata, can't get contents:
 917          * - Safari 5.0.2
 918          *
 919          * Known fail:
 920          * - Opera 10.63, 11 beta (no input.files interface)
 921          *
 922          * @param {File} file
 923          *
 924          * @todo use configured thumbnail size
 925          * @todo detect pixel size?
 926          * @todo should we render a thumbnail to a canvas and then use the smaller image?
 927          */
 928         PreviewAttach: function(file) {
 929             var tooltip = file.type + ' ' + Math.round(file.size / 1024) + 'KB';
 930             var preview = true;
 931
 932             var blobAsDataURL;
 933             if (typeof window.createObjectURL != "undefined") {
 934                 /**
 935                  * createObjectURL lets us reference the file directly from an <img>
 936                  * This produces a compact URL with an opaque reference to the file,
 937                  * which we can reference immediately.
 938                  *
 939                  * - Firefox 3.6.6: no
 940                  * - Firefox 4.0b7: no
 941                  * - Safari 5.0.2: no
 942                  * - Chrome 8.0.552.210: works!
 943                  */
 944                 blobAsDataURL = function(blob, callback) {
 945                     callback(window.createObjectURL(blob));
 946                 }
 947             } else if (typeof window.FileReader != "undefined") {
 948                 /**
 949                  * FileAPI's FileReader can build a data URL from a blob's contents,
 950                  * but it must read the file and build it asynchronously. This means
 951                  * we'll be passing a giant data URL around, which may be inefficient.
 952                  *
 953                  * - Firefox 3.6.6: works!
 954                  * - Firefox 4.0b7: works!
 955                  * - Safari 5.0.2: no
 956                  * - Chrome 8.0.552.210: works!
 957                  */
 958                 blobAsDataURL = function(blob, callback) {
 959                     var reader = new FileReader();
 960                     reader.onload = function(event) {
 961                         callback(reader.result);
 962                     }
 963                     reader.readAsDataURL(blob);
 964                 }
 965             } else {
 966                 preview = false;
 967             }
 968
 969             var imageTypes = ['image/png', 'image/jpeg', 'image/gif', 'image/svg+xml'];
 970             if ($.inArray(file.type, imageTypes) == -1) {
 971                 // We probably don't know how to show the file.
 972                 preview = false;
 973             }
 974
 975             var maxSize = 8 * 1024 * 1024;
 976             if (file.size > maxSize) {
 977                 // Don't kill the browser trying to load some giant image.
 978                 preview = false;
 979             }
 980
 981             if (preview) {
 982                 blobAsDataURL(file, function(url) {
 983                     var img = $('<img>')
 984                         .attr('title', tooltip)
 985                         .attr('alt', tooltip)
 986                         .attr('src', url)
 987                         .attr('style', 'height: 120px');
 988                     $('#'+SN.C.S.NoticeDataAttachSelected).append(img);
 989                 });
 990             } else {
 991                 var img = $('<div></div>').text(tooltip);
 992                 $('#'+SN.C.S.NoticeDataAttachSelected).append(img);
 993             }
 994         },
 995
 996         /**
 997          * Setup function -- DOES NOT trigger actions immediately.
 998          *
 999          * Initializes state for the location-lookup features in the
1000          * new-notice form. Seems to set up some event handlers for
1001          * triggering lookups and using the new values.
1002          *
1003          * @fixme tl;dr
1004          * @fixme there's not good visual state update here, so users have a
1005          *        hard time figuring out if it's working or fixing if it's wrong.
1006          *
1007          */
1008         NoticeLocationAttach: function() {
1009             // @fixme this should not be tied to the main notice form, as there may be multiple notice forms...
1010             var NLat = $('#'+SN.C.S.NoticeLat).val();
1011             var NLon = $('#'+SN.C.S.NoticeLon).val();
1012             var NLNS = $('#'+SN.C.S.NoticeLocationNs).val();
1013             var NLID = $('#'+SN.C.S.NoticeLocationId).val();
1014             var NLN = $('#'+SN.C.S.NoticeGeoName).text();
1015             var NDGe = $('#'+SN.C.S.NoticeDataGeo);
1016
1017             function removeNoticeDataGeo(error) {
1018                 $('label[for='+SN.C.S.NoticeDataGeo+']')
1019                     .attr('title', jQuery.trim($('label[for='+SN.C.S.NoticeDataGeo+']').text()))
1020                     .removeClass('checked');
1021
1022                 $('#'+SN.C.S.NoticeLat).val('');
1023                 $('#'+SN.C.S.NoticeLon).val('');
1024                 $('#'+SN.C.S.NoticeLocationNs).val('');
1025                 $('#'+SN.C.S.NoticeLocationId).val('');
1026                 $('#'+SN.C.S.NoticeDataGeo).attr('checked', false);
1027
1028                 $.cookie(SN.C.S.NoticeDataGeoCookie, 'disabled', { path: '/' });
1029
1030                 if (error) {
1031                     $('.geo_status_wrapper').removeClass('success').addClass('error');
1032                     $('.geo_status_wrapper .geo_status').text(error);
1033                 } else {
1034                     $('.geo_status_wrapper').remove();
1035                 }
1036             }
1037
1038             function getJSONgeocodeURL(geocodeURL, data) {
1039                 SN.U.NoticeGeoStatus('Looking up place name...');
1040                 $.getJSON(geocodeURL, data, function(location) {
1041                     var lns, lid;
1042
1043                     if (typeof(location.location_ns) != 'undefined') {
1044                         $('#'+SN.C.S.NoticeLocationNs).val(location.location_ns);
1045                         lns = location.location_ns;
1046                     }
1047
1048                     if (typeof(location.location_id) != 'undefined') {
1049                         $('#'+SN.C.S.NoticeLocationId).val(location.location_id);
1050                         lid = location.location_id;
1051                     }
1052
1053                     if (typeof(location.name) == 'undefined') {
1054                         NLN_text = data.lat + ';' + data.lon;
1055                     }
1056                     else {
1057                         NLN_text = location.name;
1058                     }
1059
1060                     SN.U.NoticeGeoStatus(NLN_text, data.lat, data.lon, location.url);
1061                     $('label[for='+SN.C.S.NoticeDataGeo+']')
1062                         .attr('title', NoticeDataGeo_text.ShareDisable + ' (' + NLN_text + ')');
1063
1064                     $('#'+SN.C.S.NoticeLat).val(data.lat);
1065                     $('#'+SN.C.S.NoticeLon).val(data.lon);
1066                     $('#'+SN.C.S.NoticeLocationNs).val(lns);
1067                     $('#'+SN.C.S.NoticeLocationId).val(lid);
1068                     $('#'+SN.C.S.NoticeDataGeo).attr('checked', true);
1069
1070                     var cookieValue = {
1071                         NLat: data.lat,
1072                         NLon: data.lon,
1073                         NLNS: lns,
1074                         NLID: lid,
1075                         NLN: NLN_text,
1076                         NLNU: location.url,
1077                         NDG: true
1078                     };
1079
1080                     $.cookie(SN.C.S.NoticeDataGeoCookie, JSON.stringify(cookieValue), { path: '/' });
1081                 });
1082             }
1083
1084             if (NDGe.length > 0) {
1085                 if ($.cookie(SN.C.S.NoticeDataGeoCookie) == 'disabled') {
1086                     NDGe.attr('checked', false);
1087                 }
1088                 else {
1089                     NDGe.attr('checked', true);
1090                 }
1091
1092                 var NGW = $('#notice_data-geo_wrap');
1093                 var geocodeURL = NGW.attr('title');
1094                 NGW.removeAttr('title');
1095
1096                 $('label[for='+SN.C.S.NoticeDataGeo+']')
1097                     .attr('title', jQuery.trim($('label[for='+SN.C.S.NoticeDataGeo+']').text()));
1098
1099                 NDGe.change(function() {
1100                     if ($('#'+SN.C.S.NoticeDataGeo).attr('checked') === true || $.cookie(SN.C.S.NoticeDataGeoCookie) === null) {
1101                         $('label[for='+SN.C.S.NoticeDataGeo+']')
1102                             .attr('title', NoticeDataGeo_text.ShareDisable)
1103                             .addClass('checked');
1104
1105                         if ($.cookie(SN.C.S.NoticeDataGeoCookie) === null || $.cookie(SN.C.S.NoticeDataGeoCookie) == 'disabled') {
1106                             if (navigator.geolocation) {
1107                                 SN.U.NoticeGeoStatus('Requesting location from browser...');
1108                                 navigator.geolocation.getCurrentPosition(
1109                                     function(position) {
1110                                         $('#'+SN.C.S.NoticeLat).val(position.coords.latitude);
1111                                         $('#'+SN.C.S.NoticeLon).val(position.coords.longitude);
1112
1113                                         var data = {
1114                                             lat: position.coords.latitude,
1115                                             lon: position.coords.longitude,
1116                                             token: $('#token').val()
1117                                         };
1118
1119                                         getJSONgeocodeURL(geocodeURL, data);
1120                                     },
1121
1122                                     function(error) {
1123                                         switch(error.code) {
1124                                             case error.PERMISSION_DENIED:
1125                                                 removeNoticeDataGeo('Location permission denied.');
1126                                                 break;
1127                                             case error.TIMEOUT:
1128                                                 //$('#'+SN.C.S.NoticeDataGeo).attr('checked', false);
1129                                                 removeNoticeDataGeo('Location lookup timeout.');
1130                                                 break;
1131                                         }
1132                                     },
1133
1134                                     {
1135                                         timeout: 10000
1136                                     }
1137                                 );
1138                             }
1139                             else {
1140                                 if (NLat.length > 0 && NLon.length > 0) {
1141                                     var data = {
1142                                         lat: NLat,
1143                                         lon: NLon,
1144                                         token: $('#token').val()
1145                                     };
1146
1147                                     getJSONgeocodeURL(geocodeURL, data);
1148                                 }
1149                                 else {
1150                                     removeNoticeDataGeo();
1151                                     $('#'+SN.C.S.NoticeDataGeo).remove();
1152                                     $('label[for='+SN.C.S.NoticeDataGeo+']').remove();
1153                                 }
1154                             }
1155                         }
1156                         else {
1157                             var cookieValue = JSON.parse($.cookie(SN.C.S.NoticeDataGeoCookie));
1158
1159                             $('#'+SN.C.S.NoticeLat).val(cookieValue.NLat);
1160                             $('#'+SN.C.S.NoticeLon).val(cookieValue.NLon);
1161                             $('#'+SN.C.S.NoticeLocationNs).val(cookieValue.NLNS);
1162                             $('#'+SN.C.S.NoticeLocationId).val(cookieValue.NLID);
1163                             $('#'+SN.C.S.NoticeDataGeo).attr('checked', cookieValue.NDG);
1164
1165                             SN.U.NoticeGeoStatus(cookieValue.NLN, cookieValue.NLat, cookieValue.NLon, cookieValue.NLNU);
1166                             $('label[for='+SN.C.S.NoticeDataGeo+']')
1167                                 .attr('title', NoticeDataGeo_text.ShareDisable + ' (' + cookieValue.NLN + ')')
1168                                 .addClass('checked');
1169                         }
1170                     }
1171                     else {
1172                         removeNoticeDataGeo();
1173                     }
1174                 }).change();
1175             }
1176         },
1177
1178         /**
1179          * Create or update a geolocation status widget in this notice posting form.
1180          *
1181          * @param {String} status
1182          * @param {String} lat (optional)
1183          * @param {String} lon (optional)
1184          * @param {String} url (optional)
1185          */
1186         NoticeGeoStatus: function(status, lat, lon, url)
1187         {
1188             var form = $('#form_notice');
1189             var wrapper = form.find('.geo_status_wrapper');
1190             if (wrapper.length == 0) {
1191                 wrapper = $('<div class="'+SN.C.S.Success+' geo_status_wrapper"><button class="close" style="float:right">&#215;</button><div class="geo_status"></div></div>');
1192                 wrapper.find('button.close').click(function() {
1193                     $('#'+SN.C.S.NoticeDataGeo).removeAttr('checked').change();
1194                 });
1195                 form.append(wrapper);
1196             }
1197             var label;
1198             if (url) {
1199                 label = $('<a></a>').attr('href', url);
1200             } else {
1201                 label = $('<span></span>');
1202             }
1203             label.text(status);
1204             if (lat || lon) {
1205                 var latlon = lat + ';' + lon;
1206                 label.attr('title', latlon);
1207                 if (!status) {
1208                     label.text(latlon)
1209                 }
1210             }
1211             wrapper.find('.geo_status').empty().append(label);
1212         },
1213
1214         /**
1215          * Setup function -- DOES NOT trigger actions immediately.
1216          *
1217          * Initializes event handlers for the "Send direct message" link on
1218          * profile pages, setting it up to display a dialog box when clicked.
1219          *
1220          * Unlike the repeat confirmation form, this appears to fetch
1221          * the form _from the original link target_, so the form itself
1222          * doesn't need to be in the current document.
1223          *
1224          * @fixme breaks ability to open link in new window?
1225          */
1226         NewDirectMessage: function() {
1227             NDM = $('.entity_send-a-message a');
1228             NDM.attr({'href':NDM.attr('href')+'&ajax=1'});
1229             NDM.bind('click', function() {
1230                 var NDMF = $('.entity_send-a-message form');
1231                 if (NDMF.length === 0) {
1232                     $(this).addClass(SN.C.S.Processing);
1233                     $.get(NDM.attr('href'), null, function(data) {
1234                         $('.entity_send-a-message').append(document._importNode($('form', data)[0], true));
1235                         NDMF = $('.entity_send-a-message .form_notice');
1236                         SN.U.FormNoticeXHR(NDMF);
1237                         SN.U.FormNoticeEnhancements(NDMF);
1238                         NDMF.append('<button class="close">&#215;</button>');
1239                         $('.entity_send-a-message button').click(function(){
1240                             NDMF.hide();
1241                             return false;
1242                         });
1243                         NDM.removeClass(SN.C.S.Processing);
1244                     });
1245                 }
1246                 else {
1247                     NDMF.show();
1248                     $('.entity_send-a-message textarea').focus();
1249                 }
1250                 return false;
1251             });
1252         },
1253
1254         /**
1255          * Return a date object with the current local time on the
1256          * given year, month, and day.
1257          *
1258          * @param {number} year: 4-digit year
1259          * @param {number} month: 0 == January
1260          * @param {number} day: 1 == 1
1261          * @return {Date}
1262          */
1263         GetFullYear: function(year, month, day) {
1264             var date = new Date();
1265             date.setFullYear(year, month, day);
1266
1267             return date;
1268         },
1269
1270         /**
1271          * Some sort of object interface for storing some structured
1272          * information in a cookie.
1273          *
1274          * Appears to be used to save the last-used login nickname?
1275          * That's something that browsers usually take care of for us
1276          * these days, do we really need to do it? Does anything else
1277          * use this interface?
1278          *
1279          * @fixme what is this?
1280          * @fixme should this use non-cookie local storage when available?
1281          */
1282         StatusNetInstance: {
1283             /**
1284              * @fixme what is this?
1285              */
1286             Set: function(value) {
1287                 var SNI = SN.U.StatusNetInstance.Get();
1288                 if (SNI !== null) {
1289                     value = $.extend(SNI, value);
1290                 }
1291
1292                 $.cookie(
1293                     SN.C.S.StatusNetInstance,
1294                     JSON.stringify(value),
1295                     {
1296                         path: '/',
1297                         expires: SN.U.GetFullYear(2029, 0, 1)
1298                     });
1299             },
1300
1301             /**
1302              * @fixme what is this?
1303              */
1304             Get: function() {
1305                 var cookieValue = $.cookie(SN.C.S.StatusNetInstance);
1306                 if (cookieValue !== null) {
1307                     return JSON.parse(cookieValue);
1308                 }
1309                 return null;
1310             },
1311
1312             /**
1313              * @fixme what is this?
1314              */
1315             Delete: function() {
1316                 $.cookie(SN.C.S.StatusNetInstance, null);
1317             }
1318         },
1319
1320         /**
1321          * Check if the current page is a timeline where the current user's
1322          * posts should be displayed immediately on success.
1323          *
1324          * @fixme this should be done in a saner way, with machine-readable
1325          * info about what page we're looking at.
1326          *
1327          * @param {DOMElement} notice: HTML chunk with formatted notice
1328          * @return boolean
1329          */
1330         belongsOnTimeline: function(notice) {
1331             var action = $("body").attr('id');
1332             if (action == 'public') {
1333                 return true;
1334             }
1335
1336             var profileLink = $('#nav_profile a').attr('href');
1337             if (profileLink) {
1338                 var authorUrl = $(notice).find('.entry-title .author a.url').attr('href');
1339                 if (authorUrl == profileLink) {
1340                     if (action == 'all' || action == 'showstream') {
1341                         // Posts always show on your own friends and profile streams.
1342                         return true;
1343                     }
1344                 }
1345             }
1346
1347             // @fixme tag, group, reply timelines should be feasible as well.
1348             // Mismatch between id-based and name-based user/group links currently complicates
1349             // the lookup, since all our inline mentions contain the absolute links but the
1350             // UI links currently on the page use malleable names.
1351
1352             return false;
1353         }
1354     },
1355
1356     Init: {
1357         /**
1358          * If user is logged in, run setup code for the new notice form:
1359          *
1360          *  - char counter
1361          *  - AJAX submission
1362          *  - location events
1363          *  - file upload events
1364          */
1365         NoticeForm: function() {
1366             if ($('body.user_in').length > 0) {
1367                 SN.U.NoticeLocationAttach();
1368
1369                 $('.'+SN.C.S.FormNotice).each(function() {
1370                     SN.U.FormNoticeXHR($(this));
1371                     SN.U.FormNoticeEnhancements($(this));
1372                 });
1373
1374                 SN.U.NoticeDataAttach();
1375             }
1376         },
1377
1378         /**
1379          * Run setup code for notice timeline views items:
1380          *
1381          * - AJAX submission for fave/repeat/reply (if logged in)
1382          * - Attachment link extras ('more' links)
1383          */
1384         Notices: function() {
1385             if ($('body.user_in').length > 0) {
1386                 SN.U.NoticeFavor();
1387                 SN.U.NoticeRepeat();
1388                 SN.U.NoticeReply();
1389                 SN.U.NoticeInlineReplySetup();
1390             }
1391
1392             SN.U.NoticeAttachments();
1393         },
1394
1395         /**
1396          * Run setup code for user & group profile page header area if logged in:
1397          *
1398          * - AJAX submission for sub/unsub/join/leave/nudge
1399          * - AJAX form popup for direct-message
1400          */
1401         EntityActions: function() {
1402             if ($('body.user_in').length > 0) {
1403                 $('.form_user_subscribe').live('click', function() { SN.U.FormXHR($(this)); return false; });
1404                 $('.form_user_unsubscribe').live('click', function() { SN.U.FormXHR($(this)); return false; });
1405                 $('.form_group_join').live('click', function() { SN.U.FormXHR($(this)); return false; });
1406                 $('.form_group_leave').live('click', function() { SN.U.FormXHR($(this)); return false; });
1407                 $('.form_user_nudge').live('click', function() { SN.U.FormXHR($(this)); return false; });
1408
1409                 SN.U.NewDirectMessage();
1410             }
1411         },
1412
1413         /**
1414          * Run setup code for login form:
1415          *
1416          * - loads saved last-used-nickname from cookie
1417          * - sets event handler to save nickname to cookie on submit
1418          *
1419          * @fixme is this necessary? Browsers do their own form saving these days.
1420          */
1421         Login: function() {
1422             if (SN.U.StatusNetInstance.Get() !== null) {
1423                 var nickname = SN.U.StatusNetInstance.Get().Nickname;
1424                 if (nickname !== null) {
1425                     $('#form_login #nickname').val(nickname);
1426                 }
1427             }
1428
1429             $('#form_login').bind('submit', function() {
1430                 SN.U.StatusNetInstance.Set({Nickname: $('#form_login #nickname').val()});
1431                 return true;
1432             });
1433         },
1434
1435         /**
1436          * Add logic to any file upload forms to handle file size limits,
1437          * on browsers that support basic FileAPI.
1438          */
1439         UploadForms: function () {
1440             $('input[type=file]').change(function(event) {
1441                 if (typeof this.files == "object" && this.files.length > 0) {
1442                     var size = 0;
1443                     for (var i = 0; i < this.files.length; i++) {
1444                         size += this.files[i].size;
1445                     }
1446
1447                     var max = SN.U.maxFileSize($(this.form));
1448                     if (max > 0 && size > max) {
1449                         var msg = 'File too large: maximum upload size is %d bytes.';
1450                         alert(msg.replace('%d', max));
1451
1452                         // Clear the files.
1453                         $(this).val('');
1454                         event.preventDefault();
1455                         return false;
1456                     }
1457                 }
1458             });
1459         }
1460     }
1461 };
1462
1463 /**
1464  * Run initialization functions on DOM-ready.
1465  *
1466  * Note that if we're waiting on other scripts to load, this won't happen
1467  * until that's done. To load scripts asynchronously without delaying setup,
1468  * don't start them loading until after DOM-ready time!
1469  */
1470 $(document).ready(function(){
1471     SN.Init.UploadForms();
1472     if ($('.'+SN.C.S.FormNotice).length > 0) {
1473         SN.Init.NoticeForm();
1474     }
1475     if ($('#content .notices').length > 0) {
1476         SN.Init.Notices();
1477     }
1478     if ($('#content .entity_actions').length > 0) {
1479         SN.Init.EntityActions();
1480     }
1481     if ($('#form_login').length > 0) {
1482         SN.Init.Login();
1483     }
1484 });