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                 NDT.bind('keydown', function(e) {
 137                     SN.U.SubmitOnReturn(e, form);
 138                 });
 139             }
 140             else {
 141                 form.find('#'+SN.C.S.NoticeTextCount).text(jQuery.data(form[0], 'ElementData').MaxLength);
 142             }
 143
 144             if ($('body')[0].id != 'conversation' && window.location.hash.length === 0 && $(window).scrollTop() == 0) {
 145                 form.find('textarea').focus();
 146             }
 147         },
 148
 149         /**
 150          * To be called from keydown event handler on the notice import form.
 151          * Checks if return or enter key was pressed, and if so attempts to
 152          * submit the form and cancel standard processing of the enter key.
 153          *
 154          * @param {Event} event
 155          * @param {jQuery} el: jQuery object whose first element is the notice posting form
 156          *
 157          * @return {boolean} whether to cancel the event? Does this actually pass through?
 158          * @access private
 159          */
 160         SubmitOnReturn: function(event, el) {
 161             if (event.keyCode == 13 || event.keyCode == 10) {
 162                 el.submit();
 163                 event.preventDefault();
 164                 event.stopPropagation();
 165                 $('#'+el[0].id+' #'+SN.C.S.NoticeDataText).blur();
 166                 $('body').focus();
 167                 return false;
 168             }
 169             return true;
 170         },
 171
 172         /**
 173          * To be called from event handlers on the notice import form.
 174          * Triggers an update of the remaining-characters counter.
 175          *
 176          * Additional counter updates will be suppressed during the
 177          * next half-second to avoid flooding the layout engine with
 178          * updates, followed by another automatic check.
 179          *
 180          * The maximum length is pulled from data established by
 181          * FormNoticeEnhancements.
 182          *
 183          * @param {jQuery} form: jQuery object whose first element is the notice posting form
 184          * @access private
 185          */
 186         Counter: function(form) {
 187             SN.C.I.FormNoticeCurrent = form;
 188
 189             var MaxLength = jQuery.data(form[0], 'ElementData').MaxLength;
 190
 191             if (MaxLength <= 0) {
 192                 return;
 193             }
 194
 195             var remaining = MaxLength - SN.U.CharacterCount(form);
 196             var counter = form.find('#'+SN.C.S.NoticeTextCount);
 197
 198             if (remaining.toString() != counter.text()) {
 199                 if (!SN.C.I.CounterBlackout || remaining === 0) {
 200                     if (counter.text() != String(remaining)) {
 201                         counter.text(remaining);
 202                     }
 203                     if (remaining < 0) {
 204                         form.addClass(SN.C.S.Warning);
 205                     } else {
 206                         form.removeClass(SN.C.S.Warning);
 207                     }
 208                     // Skip updates for the next 500ms.
 209                     // On slower hardware, updating on every keypress is unpleasant.
 210                     if (!SN.C.I.CounterBlackout) {
 211                         SN.C.I.CounterBlackout = true;
 212                         SN.C.I.FormNoticeCurrent = form;
 213                         window.setTimeout("SN.U.ClearCounterBlackout(SN.C.I.FormNoticeCurrent);", 500);
 214                     }
 215                 }
 216             }
 217         },
 218
 219         /**
 220          * Pull the count of characters in the current edit field.
 221          * Plugins replacing the edit control may need to override this.
 222          *
 223          * @param {jQuery} form: jQuery object whose first element is the notice posting form
 224          * @return number of chars
 225          */
 226         CharacterCount: function(form) {
 227             return form.find('#'+SN.C.S.NoticeDataText).val().length;
 228         },
 229
 230         /**
 231          * Called internally after the counter update blackout period expires;
 232          * runs another update to make sure we didn't miss anything.
 233          *
 234          * @param {jQuery} form: jQuery object whose first element is the notice posting form
 235          * @access private
 236          */
 237         ClearCounterBlackout: function(form) {
 238             // Allow keyup events to poke the counter again
 239             SN.C.I.CounterBlackout = false;
 240             // Check if the string changed since we last looked
 241             SN.U.Counter(form);
 242         },
 243
 244         /**
 245          * Helper function to rewrite default HTTP form action URLs to HTTPS
 246          * so we can actually fetch them when on an SSL page in ssl=sometimes
 247          * mode.
 248          *
 249          * It would be better to output URLs that didn't hardcode protocol
 250          * and hostname in the first place...
 251          *
 252          * @param {String} url
 253          * @return string
 254          */
 255         RewriteAjaxAction: function(url) {
 256             // Quick hack: rewrite AJAX submits to HTTPS if they'd fail otherwise.
 257             if (document.location.protocol == 'https:' && url.substr(0, 5) == 'http:') {
 258                 return url.replace(/^http:\/\/[^:\/]+/, 'https://' + document.location.host);
 259             } else {
 260                 return url;
 261             }
 262         },
 263
 264         /**
 265          * Grabs form data and submits it asynchronously, with 'ajax=1'
 266          * parameter added to the rest.
 267          *
 268          * If a successful response includes another form, that form
 269          * will be extracted and copied in, replacing the original form.
 270          * If there's no form, the first paragraph will be used.
 271          *
 272          * @fixme can sometimes explode confusingly if returnd data is bogus
 273          * @fixme error handling is pretty vague
 274          * @fixme can't submit file uploads
 275          *
 276          * @param {jQuery} form: jQuery object whose first element is a form
 277          *
 278          * @access public
 279          */
 280         FormXHR: function(form) {
 281             $.ajax({
 282                 type: 'POST',
 283                 dataType: 'xml',
 284                 url: SN.U.RewriteAjaxAction(form.attr('action')),
 285                 data: form.serialize() + '&ajax=1',
 286                 beforeSend: function(xhr) {
 287                     form
 288                         .addClass(SN.C.S.Processing)
 289                         .find('.submit')
 290                             .addClass(SN.C.S.Disabled)
 291                             .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 292                 },
 293                 error: function (xhr, textStatus, errorThrown) {
 294                     alert(errorThrown || textStatus);
 295                 },
 296                 success: function(data, textStatus) {
 297                     if (typeof($('form', data)[0]) != 'undefined') {
 298                         form_new = document._importNode($('form', data)[0], true);
 299                         form.replaceWith(form_new);
 300                     }
 301                     else {
 302                         form.replaceWith(document._importNode($('p', data)[0], true));
 303                     }
 304                 }
 305             });
 306         },
 307
 308         /**
 309          * Setup function -- DOES NOT trigger actions immediately.
 310          *
 311          * Sets up event handlers for special-cased async submission of the
 312          * notice-posting form, including some pre-post validation.
 313          *
 314          * Unlike FormXHR() this does NOT submit the form immediately!
 315          * It sets up event handlers so that any method of submitting the
 316          * form (click on submit button, enter, submit() etc) will trigger
 317          * it properly.
 318          *
 319          * Also unlike FormXHR(), this system will use a hidden iframe
 320          * automatically to handle file uploads via <input type="file">
 321          * controls.
 322          *
 323          * @fixme tl;dr
 324          * @fixme vast swaths of duplicate code and really long variable names clutter this function up real bad
 325          * @fixme error handling is unreliable
 326          * @fixme cookieValue is a global variable, but probably shouldn't be
 327          * @fixme saving the location cache cookies should be split out
 328          * @fixme some error messages are hardcoded english: needs i18n
 329          * @fixme special-case for bookmarklet is confusing and uses a global var "self". Is this ok?
 330          *
 331          * @param {jQuery} form: jQuery object whose first element is a form
 332          *
 333          * @access public
 334          */
 335         FormNoticeXHR: function(form) {
 336             SN.C.I.NoticeDataGeo = {};
 337             form.append('<input type="hidden" name="ajax" value="1"/>');
 338
 339             // Make sure we don't have a mixed HTTP/HTTPS submission...
 340             form.attr('action', SN.U.RewriteAjaxAction(form.attr('action')));
 341
 342             /**
 343              * Show a response feedback bit under the new-notice dialog.
 344              *
 345              * @param {String} cls: CSS class name to use ('error' or 'success')
 346              * @param {String} text
 347              * @access private
 348              */
 349             var showFeedback = function(cls, text) {
 350                 form.append(
 351                     $('<p class="form_response"></p>')
 352                         .addClass(cls)
 353                         .text(text)
 354                 );
 355             };
 356
 357             /**
 358              * Hide the previous response feedback, if any.
 359              */
 360             var removeFeedback = function() {
 361                 form.find('.form_response').remove();
 362             };
 363
 364             form.ajaxForm({
 365                 dataType: 'xml',
 366                 timeout: '60000',
 367                 beforeSend: function(formData) {
 368                     if (form.find('#'+SN.C.S.NoticeDataText)[0].value.length === 0) {
 369                         form.addClass(SN.C.S.Warning);
 370                         return false;
 371                     }
 372                     form
 373                         .addClass(SN.C.S.Processing)
 374                         .find('#'+SN.C.S.NoticeActionSubmit)
 375                             .addClass(SN.C.S.Disabled)
 376                             .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 377
 378                     SN.U.normalizeGeoData(form);
 379
 380                     return true;
 381                 },
 382                 error: function (xhr, textStatus, errorThrown) {
 383                     form
 384                         .removeClass(SN.C.S.Processing)
 385                         .find('#'+SN.C.S.NoticeActionSubmit)
 386                             .removeClass(SN.C.S.Disabled)
 387                             .removeAttr(SN.C.S.Disabled, SN.C.S.Disabled);
 388                     removeFeedback();
 389                     if (textStatus == 'timeout') {
 390                         // @fixme i18n
 391                         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.');
 392                     }
 393                     else {
 394                         var response = SN.U.GetResponseXML(xhr);
 395                         if ($('.'+SN.C.S.Error, response).length > 0) {
 396                             form.append(document._importNode($('.'+SN.C.S.Error, response)[0], true));
 397                         }
 398                         else {
 399                             if (parseInt(xhr.status) === 0 || jQuery.inArray(parseInt(xhr.status), SN.C.I.HTTP20x30x) >= 0) {
 400                                 form
 401                                     .resetForm()
 402                                     .find('#'+SN.C.S.NoticeDataAttachSelected).remove();
 403                                 SN.U.FormNoticeEnhancements(form);
 404                             }
 405                             else {
 406                                 // @fixme i18n
 407                                 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.');
 408                             }
 409                         }
 410                     }
 411                 },
 412                 success: function(data, textStatus) {
 413                     removeFeedback();
 414                     var errorResult = $('#'+SN.C.S.Error, data);
 415                     if (errorResult.length > 0) {
 416                         showFeedback('error', errorResult.text());
 417                     }
 418                     else {
 419                         if($('body')[0].id == 'bookmarklet') {
 420                             // @fixme self is not referenced anywhere?
 421                             self.close();
 422                         }
 423
 424                         var commandResult = $('#'+SN.C.S.CommandResult, data);
 425                         if (commandResult.length > 0) {
 426                             showFeedback('success', commandResult.text());
 427                         }
 428                         else {
 429                             // New notice post was successful. If on our timeline, show it!
 430                             var notice = document._importNode($('li', data)[0], true);
 431                             var notices = $('#notices_primary .notices:first');
 432                             if (notices.length > 0 && SN.U.belongsOnTimeline(notice)) {
 433                                 if ($('#'+notice.id).length === 0) {
 434                                     var notice_irt_value = $('#'+SN.C.S.NoticeInReplyTo).val();
 435                                     var notice_irt = '#notices_primary #notice-'+notice_irt_value;
 436                                     if($('body')[0].id == 'conversation') {
 437                                         if(notice_irt_value.length > 0 && $(notice_irt+' .notices').length < 1) {
 438                                             $(notice_irt).append('<ul class="notices"></ul>');
 439                                         }
 440                                         $($(notice_irt+' .notices')[0]).append(notice);
 441                                     }
 442                                     else {
 443                                         notices.prepend(notice);
 444                                     }
 445                                     $('#'+notice.id)
 446                                         .css({display:'none'})
 447                                         .fadeIn(2500);
 448                                     SN.U.NoticeWithAttachment($('#'+notice.id));
 449                                     SN.U.NoticeReplyTo($('#'+notice.id));
 450                                 }
 451                             }
 452                             else {
 453                                 // Not on a timeline that this belongs on?
 454                                 // Just show a success message.
 455                                 showFeedback('success', $('title', data).text());
 456                             }
 457                         }
 458                         form.resetForm();
 459                         form.find('#'+SN.C.S.NoticeInReplyTo).val('');
 460                         form.find('#'+SN.C.S.NoticeDataAttachSelected).remove();
 461                         SN.U.FormNoticeEnhancements(form);
 462                     }
 463                 },
 464                 complete: function(xhr, textStatus) {
 465                     form
 466                         .removeClass(SN.C.S.Processing)
 467                         .find('#'+SN.C.S.NoticeActionSubmit)
 468                             .removeAttr(SN.C.S.Disabled)
 469                             .removeClass(SN.C.S.Disabled);
 470
 471                     $('#'+SN.C.S.NoticeLat).val(SN.C.I.NoticeDataGeo.NLat);
 472                     $('#'+SN.C.S.NoticeLon).val(SN.C.I.NoticeDataGeo.NLon);
 473                     if ($('#'+SN.C.S.NoticeLocationNs)) {
 474                         $('#'+SN.C.S.NoticeLocationNs).val(SN.C.I.NoticeDataGeo.NLNS);
 475                         $('#'+SN.C.S.NoticeLocationId).val(SN.C.I.NoticeDataGeo.NLID);
 476                     }
 477                     $('#'+SN.C.S.NoticeDataGeo).attr('checked', SN.C.I.NoticeDataGeo.NDG);
 478                 }
 479             });
 480         },
 481
 482         normalizeGeoData: function(form) {
 483             SN.C.I.NoticeDataGeo.NLat = form.find('[name=lat]').val();
 484             SN.C.I.NoticeDataGeo.NLon = form.find('[name=lon]').val();
 485             SN.C.I.NoticeDataGeo.NLNS = form.find('[name=location_ns]').val();
 486             SN.C.I.NoticeDataGeo.NLID = form.find('[name=location_id]').val();
 487             SN.C.I.NoticeDataGeo.NDG = $('#'+SN.C.S.NoticeDataGeo).attr('checked'); // @fixme
 488
 489             var cookieValue = $.cookie(SN.C.S.NoticeDataGeoCookie);
 490
 491             if (cookieValue !== null && cookieValue != 'disabled') {
 492                 cookieValue = JSON.parse(cookieValue);
 493                 SN.C.I.NoticeDataGeo.NLat = form.find('[name=lat]').val(cookieValue.NLat).val();
 494                 SN.C.I.NoticeDataGeo.NLon = form.find('[name=lon]').val(cookieValue.NLon).val();
 495                 if (cookieValue.NLNS) {
 496                     SN.C.I.NoticeDataGeo.NLNS = form.find('[name=location_ns]').val(cookieValue.NLNS).val();
 497                     SN.C.I.NoticeDataGeo.NLID = form.find('[name=location_id]').val(cookieValue.NLID).val();
 498                 } else {
 499                     form.find('[name=location_ns]').val('');
 500                     form.find('[name=location_id]').val('');
 501                 }
 502             }
 503             if (cookieValue == 'disabled') {
 504                 SN.C.I.NoticeDataGeo.NDG = $('#'+SN.C.S.NoticeDataGeo).attr('checked', false).attr('checked');
 505             }
 506             else {
 507                 SN.C.I.NoticeDataGeo.NDG = $('#'+SN.C.S.NoticeDataGeo).attr('checked', true).attr('checked');
 508             }
 509
 510         },
 511         /**
 512          * Fetch an XML DOM from an XHR's response data.
 513          *
 514          * Works around unavailable responseXML when document.domain
 515          * has been modified by Meteor or other tools, in some but not
 516          * all browsers.
 517          *
 518          * @param {XMLHTTPRequest} xhr
 519          * @return DOMDocument
 520          */
 521         GetResponseXML: function(xhr) {
 522             try {
 523                 return xhr.responseXML;
 524             } catch (e) {
 525                 return (new DOMParser()).parseFromString(xhr.responseText, "text/xml");
 526             }
 527         },
 528
 529         /**
 530          * Setup function -- DOES NOT trigger actions immediately.
 531          *
 532          * Sets up event handlers on all visible notice's reply buttons to
 533          * tweak the new-notice form with needed variables and focus it
 534          * when pushed.
 535          *
 536          * (This replaces the default reply button behavior to submit
 537          * directly to a form which comes back with a specialized page
 538          * with the form data prefilled.)
 539          *
 540          * @access private
 541          */
 542         NoticeReply: function() {
 543             if ($('#'+SN.C.S.NoticeDataText).length > 0 && $('#content .notice_reply').length > 0) {
 544                 $('#content .notice').each(function() { SN.U.NoticeReplyTo($(this)); });
 545             }
 546         },
 547
 548         /**
 549          * Setup function -- DOES NOT trigger actions immediately.
 550          *
 551          * Sets up event handlers on the given notice's reply button to
 552          * tweak the new-notice form with needed variables and focus it
 553          * when pushed.
 554          *
 555          * (This replaces the default reply button behavior to submit
 556          * directly to a form which comes back with a specialized page
 557          * with the form data prefilled.)
 558          *
 559          * @param {jQuery} notice: jQuery object containing one or more notices
 560          * @access private
 561          */
 562         NoticeReplyTo: function(notice) {
 563             notice.find('.notice_reply').live('click', function(e) {
 564                 e.preventDefault();
 565                 var nickname = ($('.author .nickname', notice).length > 0) ? $($('.author .nickname', notice)[0]) : $('.author .nickname.uid');
 566                 /* SN.U.NoticeReplySet(nickname.text(), $($('.notice_id', notice)[0]).text()); */
 567                 SN.U.NoticeInlineReplyTrigger(notice, '@' + nickname.text());
 568                 return false;
 569             });
 570         },
 571
 572         /**
 573          * Open up a notice's inline reply box.
 574          *
 575          * @param {jQuery} notice: jQuery object containing one notice
 576          * @param {String} initialText
 577          */
 578         NoticeInlineReplyTrigger: function(notice, initialText) {
 579             // Find the notice we're replying to...
 580             var id = $($('.notice_id', notice)[0]).text();
 581             var parentNotice = notice;
 582
 583             // Find the threaded replies view we'll be adding to...
 584             var list = notice.closest('.notices');
 585             if (list.hasClass('threaded-replies')) {
 586                 // We're replying to a reply; use reply form on the end of this list.
 587                 // We'll add our form at the end of this; grab the root notice.
 588                 parentNotice = list.closest('.notice');
 589             } else {
 590                 // We're replying to a parent notice; pull its threaded list
 591                 // and we'll add on the end of it. Will add if needed.
 592                 list = $('ul.threaded-replies', notice);
 593                 if (list.length == 0) {
 594                     list = $('<ul class="notices threaded-replies xoxo"></ul>');
 595                     notice.append(list);
 596                 }
 597             }
 598
 599             // See if the form's already open...
 600             var replyForm = $('.notice-reply-form', list);
 601             if (replyForm.length == 0) {
 602                 // Remove placeholder if any
 603                 $('li.notice-reply-placeholder').remove();
 604
 605                 // Create the reply form entry at the end
 606                 var replyItem = $('li.notice-reply', list);
 607                 if (replyItem.length == 0) {
 608                     replyItem = $('<li class="notice-reply">' +
 609                                       '<form class="notice-reply-form" method="post">' +
 610                                           '<textarea name="status_textarea"></textarea>' +
 611                                           '<div class="controls">' +
 612                                           '<input type="hidden" name="token">' +
 613                                           '<input type="hidden" name="inreplyto">' +
 614                                           '<input type="submit" class="submit">' +
 615                                       '</div>' +
 616                                       '</form>' +
 617                                   '</li>');
 618
 619                     var baseForm = $('#form_notice');
 620                     replyForm = replyItem.find('form');
 621                     replyForm.attr('action', baseForm.attr('action'));
 622                     replyForm.find('input[name="token"]').val(baseForm.find('input[name=token]').val());
 623                     replyForm.find('input[type="submit"]').val(SN.msg('reply_submit'));
 624                     list.append(replyItem);
 625
 626                     replyForm.find('textarea').blur(function() {
 627                         var textarea = $(this);
 628                         var txt = $.trim(textarea.val());
 629                         if (txt == '' || txt == textarea.data('initialText')) {
 630                             // Nothing to say? Begone!
 631                             replyItem.remove();
 632                             if (list.find('li').length > 0) {
 633                                 SN.U.NoticeInlineReplyPlaceholder(parentNotice);
 634                             } else {
 635                                 list.remove();
 636                             }
 637                         }
 638                     });
 639                     replyForm.submit(function(event) {
 640                         var form = replyForm;
 641                         $.ajax({
 642                             type: 'POST',
 643                             dataType: 'xml',
 644                             url: SN.U.RewriteAjaxAction(form.attr('action')),
 645                             data: form.serialize() + '&ajax=1',
 646                             beforeSend: function(xhr) {
 647                                 form
 648                                     .addClass(SN.C.S.Processing)
 649                                     .find('.submit')
 650                                         .addClass(SN.C.S.Disabled)
 651                                         .attr(SN.C.S.Disabled, SN.C.S.Disabled)
 652                                         .end()
 653                                     .find('textarea')
 654                                         .addClass(SN.C.S.Disabled)
 655                                         .attr(SN.C.S.Disabled, SN.C.S.Disabled);
 656                             },
 657                             error: function (xhr, textStatus, errorThrown) {
 658                                 alert(errorThrown || textStatus);
 659                             },
 660                             success: function(data, textStatus) {
 661                                 var orig_li = $('li', data)[0];
 662                                 if (orig_li) {
 663                                     var li = document._importNode(orig_li, true);
 664                                     var id = $(li).attr('id');
 665                                     if ($("#"+id).length == 0) {
 666                                         replyItem.replaceWith(li);
 667                                         SN.U.NoticeInlineReplyPlaceholder(parentNotice);
 668                                     } else {
 669                                         // Realtime came through before us...
 670                                         replyItem.remove();
 671                                     }
 672                                 }
 673                             }
 674                         });
 675                         event.preventDefault();
 676                         return false;
 677                     });
 678                 }
 679             }
 680
 681             // Override...?
 682             replyForm.find('input[name=inreplyto]').val(id);
 683
 684             // Set focus...
 685             var text = replyForm.find('textarea');
 686             if (text.length == 0) {
 687                 throw "No textarea";
 688             }
 689             var replyto = '';
 690             if (initialText) {
 691                 replyto = initialText + ' ';
 692             }
 693             text.val(replyto + text.val().replace(RegExp(replyto, 'i'), ''));
 694             text.data('initialText', $.trim(initialText + ''));
 695             text.focus();
 696             if (text[0].setSelectionRange) {
 697                 var len = text.val().length;
 698                 text[0].setSelectionRange(len,len);
 699             }
 700         },
 701
 702         /**
 703          * FIXME OBSOLETE?
 704          * Updates the new notice posting form with bits for replying to the
 705          * given user. Adds replyto parameter to the form, and a "@foo" to the
 706          * text area.
 707          *
 708          * @fixme replyto is a global variable, but probably shouldn't be
 709          *
 710          * @param {String} nick
 711          * @param {String} id
 712          */
 713         NoticeReplySet: function(nick,id) {
 714             if (nick.match(SN.C.I.PatternUsername)) {
 715                 var text = $('#'+SN.C.S.NoticeDataText);
 716                 if (text.length > 0) {
 717                     replyto = '@' + nick + ' ';
 718                     text.val(replyto + text.val().replace(RegExp(replyto, 'i'), ''));
 719                     $('#'+SN.C.S.FormNotice+' #'+SN.C.S.NoticeInReplyTo).val(id);
 720
 721                     text[0].focus();
 722                     if (text[0].setSelectionRange) {
 723                         var len = text.val().length;
 724                         text[0].setSelectionRange(len,len);
 725                     }
 726                 }
 727             }
 728         },
 729
 730         /**
 731          * Setup function -- DOES NOT apply immediately.
 732          *
 733          * Sets up event handlers for favor/disfavor forms to submit via XHR.
 734          * Uses 'live' rather than 'bind', so applies to future as well as present items.
 735          */
 736         NoticeFavor: function() {
 737             $('.form_favor').live('click', function() { SN.U.FormXHR($(this)); return false; });
 738             $('.form_disfavor').live('click', function() { SN.U.FormXHR($(this)); return false; });
 739         },
 740
 741         NoticeInlineReplyPlaceholder: function(notice) {
 742             var list = notice.find('ul.threaded-replies');
 743             var placeholder = $('<li class="notice-reply-placeholder">' +
 744                                     '<input class="placeholder">' +
 745                                 '</li>');
 746             placeholder.click(function() {
 747                 SN.U.NoticeInlineReplyTrigger(notice);
 748             });
 749             placeholder.find('input').val(SN.msg('reply_placeholder'));
 750             list.append(placeholder);
 751         },
 752
 753         /**
 754          * Setup function -- DOES NOT apply immediately.
 755          *
 756          * Sets up event handlers for favor/disfavor forms to submit via XHR.
 757          * Uses 'live' rather than 'bind', so applies to future as well as present items.
 758          */
 759         NoticeInlineReplySetup: function() {
 760             $('.threaded-replies').each(function() {
 761                 var list = $(this);
 762                 var notice = list.closest('.notice');
 763                 SN.U.NoticeInlineReplyPlaceholder(notice);
 764             });
 765         },
 766
 767         /**
 768          * Setup function -- DOES NOT trigger actions immediately.
 769          *
 770          * Sets up event handlers for repeat forms to toss up a confirmation
 771          * popout before submitting.
 772          *
 773          * Uses 'live' rather than 'bind', so applies to future as well as present items.
 774          */
 775         NoticeRepeat: function() {
 776             $('.form_repeat').live('click', function(e) {
 777                 e.preventDefault();
 778
 779                 SN.U.NoticeRepeatConfirmation($(this));
 780                 return false;
 781             });
 782         },
 783
 784         /**
 785          * Shows a confirmation dialog box variant of the repeat button form.
 786          * This seems to use a technique where the repeat form contains
 787          * _both_ a standalone button _and_ text and buttons for a dialog.
 788          * The dialog will close after its copy of the form is submitted,
 789          * or if you click its 'close' button.
 790          *
 791          * The dialog is created by duplicating the original form and changing
 792          * its style; while clever, this is hard to generalize and probably
 793          * duplicates a lot of unnecessary HTML output.
 794          *
 795          * @fixme create confirmation dialogs through a generalized interface
 796          * that can be reused instead of hardcoded text and styles.
 797          *
 798          * @param {jQuery} form
 799          */
 800         NoticeRepeatConfirmation: function(form) {
 801             var submit_i = form.find('.submit');
 802
 803             var submit = submit_i.clone();
 804             submit
 805                 .addClass('submit_dialogbox')
 806                 .removeClass('submit');
 807             form.append(submit);
 808             submit.bind('click', function() { SN.U.FormXHR(form); return false; });
 809
 810             submit_i.hide();
 811
 812             form
 813                 .addClass('dialogbox')
 814                 .append('<button class="close">&#215;</button>')
 815                 .closest('.notice-options')
 816                     .addClass('opaque');
 817
 818             form.find('button.close').click(function(){
 819                 $(this).remove();
 820
 821                 form
 822                     .removeClass('dialogbox')
 823                     .closest('.notice-options')
 824                         .removeClass('opaque');
 825
 826                 form.find('.submit_dialogbox').remove();
 827                 form.find('.submit').show();
 828
 829                 return false;
 830             });
 831         },
 832
 833         /**
 834          * Setup function -- DOES NOT trigger actions immediately.
 835          *
 836          * Goes through all notices currently displayed and sets up attachment
 837          * handling if needed.
 838          */
 839         NoticeAttachments: function() {
 840             $('.notice a.attachment').each(function() {
 841                 SN.U.NoticeWithAttachment($(this).closest('.notice'));
 842             });
 843         },
 844
 845         /**
 846          * Setup function -- DOES NOT trigger actions immediately.
 847          *
 848          * Sets up special attachment link handling if needed. Currently this
 849          * consists only of making the "more" button used for OStatus message
 850          * cropping turn into an auto-expansion button that loads the full
 851          * text from an attachment file.
 852          *
 853          * @param {jQuery} notice
 854          */
 855         NoticeWithAttachment: function(notice) {
 856             if (notice.find('.attachment').length === 0) {
 857                 return;
 858             }
 859
 860             var attachment_more = notice.find('.attachment.more');
 861             if (attachment_more.length > 0) {
 862                 $(attachment_more[0]).click(function() {
 863                     var m = $(this);
 864                     m.addClass(SN.C.S.Processing);
 865                     $.get(m.attr('href')+'/ajax', null, function(data) {
 866                         m.parent('.entry-content').html($(data).find('#attachment_view .entry-content').html());
 867                     });
 868
 869                     return false;
 870                 }).attr('title', SN.msg('showmore_tooltip'));
 871             }
 872         },
 873
 874         /**
 875          * Setup function -- DOES NOT trigger actions immediately.
 876          *
 877          * Sets up event handlers for the file-attachment widget in the
 878          * new notice form. When a file is selected, a box will be added
 879          * below the text input showing the filename and, if supported
 880          * by the browser, a thumbnail preview.
 881          *
 882          * This preview box will also allow removing the attachment
 883          * prior to posting.
 884          */
 885         NoticeDataAttach: function() {
 886             NDA = $('#'+SN.C.S.NoticeDataAttach);
 887             NDA.change(function(event) {
 888                 var filename = $(this).val();
 889                 if (!filename) {
 890                     // No file -- we've been tricked!
 891                     $('#'+SN.C.S.NoticeDataAttachSelected).remove();
 892                     return false;
 893                 }
 894
 895                 // @fixme appending filename straight in is potentially unsafe
 896                 S = '<div id="'+SN.C.S.NoticeDataAttachSelected+'" class="'+SN.C.S.Success+'"><code>'+filename+'</code> <button class="close">&#215;</button></div>';
 897                 NDAS = $('#'+SN.C.S.NoticeDataAttachSelected);
 898                 if (NDAS.length > 0) {
 899                     NDAS.replaceWith(S);
 900                 }
 901                 else {
 902                     $('#'+SN.C.S.FormNotice).append(S);
 903                 }
 904                 $('#'+SN.C.S.NoticeDataAttachSelected+' button').click(function(){
 905                     $('#'+SN.C.S.NoticeDataAttachSelected).remove();
 906                     NDA.val('');
 907
 908                     return false;
 909                 });
 910                 if (typeof this.files == "object") {
 911                     // Some newer browsers will let us fetch the files for preview.
 912                     for (var i = 0; i < this.files.length; i++) {
 913                         SN.U.PreviewAttach(this.files[i]);
 914                     }
 915                 }
 916             });
 917         },
 918
 919         /**
 920          * Get PHP's MAX_FILE_SIZE setting for this form;
 921          * used to apply client-side file size limit checks.
 922          *
 923          * @param {jQuery} form
 924          * @return int max size in bytes; 0 or negative means no limit
 925          */
 926         maxFileSize: function(form) {
 927             var max = $(form).find('input[name=MAX_FILE_SIZE]').attr('value');
 928             if (max) {
 929                 return parseInt(max);
 930             } else {
 931                 return 0;
 932             }
 933         },
 934
 935         /**
 936          * For browsers with FileAPI support: make a thumbnail if possible,
 937          * and append it into the attachment display widget.
 938          *
 939          * Known good:
 940          * - Firefox 3.6.6, 4.0b7
 941          * - Chrome 8.0.552.210
 942          *
 943          * Known ok metadata, can't get contents:
 944          * - Safari 5.0.2
 945          *
 946          * Known fail:
 947          * - Opera 10.63, 11 beta (no input.files interface)
 948          *
 949          * @param {File} file
 950          *
 951          * @todo use configured thumbnail size
 952          * @todo detect pixel size?
 953          * @todo should we render a thumbnail to a canvas and then use the smaller image?
 954          */
 955         PreviewAttach: function(file) {
 956             var tooltip = file.type + ' ' + Math.round(file.size / 1024) + 'KB';
 957             var preview = true;
 958
 959             var blobAsDataURL;
 960             if (typeof window.createObjectURL != "undefined") {
 961                 /**
 962                  * createObjectURL lets us reference the file directly from an <img>
 963                  * This produces a compact URL with an opaque reference to the file,
 964                  * which we can reference immediately.
 965                  *
 966                  * - Firefox 3.6.6: no
 967                  * - Firefox 4.0b7: no
 968                  * - Safari 5.0.2: no
 969                  * - Chrome 8.0.552.210: works!
 970                  */
 971                 blobAsDataURL = function(blob, callback) {
 972                     callback(window.createObjectURL(blob));
 973                 }
 974             } else if (typeof window.FileReader != "undefined") {
 975                 /**
 976                  * FileAPI's FileReader can build a data URL from a blob's contents,
 977                  * but it must read the file and build it asynchronously. This means
 978                  * we'll be passing a giant data URL around, which may be inefficient.
 979                  *
 980                  * - Firefox 3.6.6: works!
 981                  * - Firefox 4.0b7: works!
 982                  * - Safari 5.0.2: no
 983                  * - Chrome 8.0.552.210: works!
 984                  */
 985                 blobAsDataURL = function(blob, callback) {
 986                     var reader = new FileReader();
 987                     reader.onload = function(event) {
 988                         callback(reader.result);
 989                     }
 990                     reader.readAsDataURL(blob);
 991                 }
 992             } else {
 993                 preview = false;
 994             }
 995
 996             var imageTypes = ['image/png', 'image/jpeg', 'image/gif', 'image/svg+xml'];
 997             if ($.inArray(file.type, imageTypes) == -1) {
 998                 // We probably don't know how to show the file.
 999                 preview = false;
1000             }
1001
1002             var maxSize = 8 * 1024 * 1024;
1003             if (file.size > maxSize) {
1004                 // Don't kill the browser trying to load some giant image.
1005                 preview = false;
1006             }
1007
1008             if (preview) {
1009                 blobAsDataURL(file, function(url) {
1010                     var img = $('<img>')
1011                         .attr('title', tooltip)
1012                         .attr('alt', tooltip)
1013                         .attr('src', url)
1014                         .attr('style', 'height: 120px');
1015                     $('#'+SN.C.S.NoticeDataAttachSelected).append(img);
1016                 });
1017             } else {
1018                 var img = $('<div></div>').text(tooltip);
1019                 $('#'+SN.C.S.NoticeDataAttachSelected).append(img);
1020             }
1021         },
1022
1023         /**
1024          * Setup function -- DOES NOT trigger actions immediately.
1025          *
1026          * Initializes state for the location-lookup features in the
1027          * new-notice form. Seems to set up some event handlers for
1028          * triggering lookups and using the new values.
1029          *
1030          * @fixme tl;dr
1031          * @fixme there's not good visual state update here, so users have a
1032          *        hard time figuring out if it's working or fixing if it's wrong.
1033          *
1034          */
1035         NoticeLocationAttach: function() {
1036             // @fixme this should not be tied to the main notice form, as there may be multiple notice forms...
1037             var NLat = $('#'+SN.C.S.NoticeLat).val();
1038             var NLon = $('#'+SN.C.S.NoticeLon).val();
1039             var NLNS = $('#'+SN.C.S.NoticeLocationNs).val();
1040             var NLID = $('#'+SN.C.S.NoticeLocationId).val();
1041             var NLN = $('#'+SN.C.S.NoticeGeoName).text();
1042             var NDGe = $('#'+SN.C.S.NoticeDataGeo);
1043
1044             function removeNoticeDataGeo(error) {
1045                 $('label[for='+SN.C.S.NoticeDataGeo+']')
1046                     .attr('title', jQuery.trim($('label[for='+SN.C.S.NoticeDataGeo+']').text()))
1047                     .removeClass('checked');
1048
1049                 $('#'+SN.C.S.NoticeLat).val('');
1050                 $('#'+SN.C.S.NoticeLon).val('');
1051                 $('#'+SN.C.S.NoticeLocationNs).val('');
1052                 $('#'+SN.C.S.NoticeLocationId).val('');
1053                 $('#'+SN.C.S.NoticeDataGeo).attr('checked', false);
1054
1055                 $.cookie(SN.C.S.NoticeDataGeoCookie, 'disabled', { path: '/' });
1056
1057                 if (error) {
1058                     $('.geo_status_wrapper').removeClass('success').addClass('error');
1059                     $('.geo_status_wrapper .geo_status').text(error);
1060                 } else {
1061                     $('.geo_status_wrapper').remove();
1062                 }
1063             }
1064
1065             function getJSONgeocodeURL(geocodeURL, data) {
1066                 SN.U.NoticeGeoStatus('Looking up place name...');
1067                 $.getJSON(geocodeURL, data, function(location) {
1068                     var lns, lid;
1069
1070                     if (typeof(location.location_ns) != 'undefined') {
1071                         $('#'+SN.C.S.NoticeLocationNs).val(location.location_ns);
1072                         lns = location.location_ns;
1073                     }
1074
1075                     if (typeof(location.location_id) != 'undefined') {
1076                         $('#'+SN.C.S.NoticeLocationId).val(location.location_id);
1077                         lid = location.location_id;
1078                     }
1079
1080                     if (typeof(location.name) == 'undefined') {
1081                         NLN_text = data.lat + ';' + data.lon;
1082                     }
1083                     else {
1084                         NLN_text = location.name;
1085                     }
1086
1087                     SN.U.NoticeGeoStatus(NLN_text, data.lat, data.lon, location.url);
1088                     $('label[for='+SN.C.S.NoticeDataGeo+']')
1089                         .attr('title', NoticeDataGeo_text.ShareDisable + ' (' + NLN_text + ')');
1090
1091                     $('#'+SN.C.S.NoticeLat).val(data.lat);
1092                     $('#'+SN.C.S.NoticeLon).val(data.lon);
1093                     $('#'+SN.C.S.NoticeLocationNs).val(lns);
1094                     $('#'+SN.C.S.NoticeLocationId).val(lid);
1095                     $('#'+SN.C.S.NoticeDataGeo).attr('checked', true);
1096
1097                     var cookieValue = {
1098                         NLat: data.lat,
1099                         NLon: data.lon,
1100                         NLNS: lns,
1101                         NLID: lid,
1102                         NLN: NLN_text,
1103                         NLNU: location.url,
1104                         NDG: true
1105                     };
1106
1107                     $.cookie(SN.C.S.NoticeDataGeoCookie, JSON.stringify(cookieValue), { path: '/' });
1108                 });
1109             }
1110
1111             if (NDGe.length > 0) {
1112                 if ($.cookie(SN.C.S.NoticeDataGeoCookie) == 'disabled') {
1113                     NDGe.attr('checked', false);
1114                 }
1115                 else {
1116                     NDGe.attr('checked', true);
1117                 }
1118
1119                 var NGW = $('#notice_data-geo_wrap');
1120                 var geocodeURL = NGW.attr('title');
1121                 NGW.removeAttr('title');
1122
1123                 $('label[for='+SN.C.S.NoticeDataGeo+']')
1124                     .attr('title', jQuery.trim($('label[for='+SN.C.S.NoticeDataGeo+']').text()));
1125
1126                 NDGe.change(function() {
1127                     if ($('#'+SN.C.S.NoticeDataGeo).attr('checked') === true || $.cookie(SN.C.S.NoticeDataGeoCookie) === null) {
1128                         $('label[for='+SN.C.S.NoticeDataGeo+']')
1129                             .attr('title', NoticeDataGeo_text.ShareDisable)
1130                             .addClass('checked');
1131
1132                         if ($.cookie(SN.C.S.NoticeDataGeoCookie) === null || $.cookie(SN.C.S.NoticeDataGeoCookie) == 'disabled') {
1133                             if (navigator.geolocation) {
1134                                 SN.U.NoticeGeoStatus('Requesting location from browser...');
1135                                 navigator.geolocation.getCurrentPosition(
1136                                     function(position) {
1137                                         $('#'+SN.C.S.NoticeLat).val(position.coords.latitude);
1138                                         $('#'+SN.C.S.NoticeLon).val(position.coords.longitude);
1139
1140                                         var data = {
1141                                             lat: position.coords.latitude,
1142                                             lon: position.coords.longitude,
1143                                             token: $('#token').val()
1144                                         };
1145
1146                                         getJSONgeocodeURL(geocodeURL, data);
1147                                     },
1148
1149                                     function(error) {
1150                                         switch(error.code) {
1151                                             case error.PERMISSION_DENIED:
1152                                                 removeNoticeDataGeo('Location permission denied.');
1153                                                 break;
1154                                             case error.TIMEOUT:
1155                                                 //$('#'+SN.C.S.NoticeDataGeo).attr('checked', false);
1156                                                 removeNoticeDataGeo('Location lookup timeout.');
1157                                                 break;
1158                                         }
1159                                     },
1160
1161                                     {
1162                                         timeout: 10000
1163                                     }
1164                                 );
1165                             }
1166                             else {
1167                                 if (NLat.length > 0 && NLon.length > 0) {
1168                                     var data = {
1169                                         lat: NLat,
1170                                         lon: NLon,
1171                                         token: $('#token').val()
1172                                     };
1173
1174                                     getJSONgeocodeURL(geocodeURL, data);
1175                                 }
1176                                 else {
1177                                     removeNoticeDataGeo();
1178                                     $('#'+SN.C.S.NoticeDataGeo).remove();
1179                                     $('label[for='+SN.C.S.NoticeDataGeo+']').remove();
1180                                 }
1181                             }
1182                         }
1183                         else {
1184                             var cookieValue = JSON.parse($.cookie(SN.C.S.NoticeDataGeoCookie));
1185
1186                             $('#'+SN.C.S.NoticeLat).val(cookieValue.NLat);
1187                             $('#'+SN.C.S.NoticeLon).val(cookieValue.NLon);
1188                             $('#'+SN.C.S.NoticeLocationNs).val(cookieValue.NLNS);
1189                             $('#'+SN.C.S.NoticeLocationId).val(cookieValue.NLID);
1190                             $('#'+SN.C.S.NoticeDataGeo).attr('checked', cookieValue.NDG);
1191
1192                             SN.U.NoticeGeoStatus(cookieValue.NLN, cookieValue.NLat, cookieValue.NLon, cookieValue.NLNU);
1193                             $('label[for='+SN.C.S.NoticeDataGeo+']')
1194                                 .attr('title', NoticeDataGeo_text.ShareDisable + ' (' + cookieValue.NLN + ')')
1195                                 .addClass('checked');
1196                         }
1197                     }
1198                     else {
1199                         removeNoticeDataGeo();
1200                     }
1201                 }).change();
1202             }
1203         },
1204
1205         /**
1206          * Create or update a geolocation status widget in this notice posting form.
1207          *
1208          * @param {String} status
1209          * @param {String} lat (optional)
1210          * @param {String} lon (optional)
1211          * @param {String} url (optional)
1212          */
1213         NoticeGeoStatus: function(status, lat, lon, url)
1214         {
1215             var form = $('#form_notice');
1216             var wrapper = form.find('.geo_status_wrapper');
1217             if (wrapper.length == 0) {
1218                 wrapper = $('<div class="'+SN.C.S.Success+' geo_status_wrapper"><button class="close" style="float:right">&#215;</button><div class="geo_status"></div></div>');
1219                 wrapper.find('button.close').click(function() {
1220                     $('#'+SN.C.S.NoticeDataGeo).removeAttr('checked').change();
1221                 });
1222                 form.append(wrapper);
1223             }
1224             var label;
1225             if (url) {
1226                 label = $('<a></a>').attr('href', url);
1227             } else {
1228                 label = $('<span></span>');
1229             }
1230             label.text(status);
1231             if (lat || lon) {
1232                 var latlon = lat + ';' + lon;
1233                 label.attr('title', latlon);
1234                 if (!status) {
1235                     label.text(latlon)
1236                 }
1237             }
1238             wrapper.find('.geo_status').empty().append(label);
1239         },
1240
1241         /**
1242          * Setup function -- DOES NOT trigger actions immediately.
1243          *
1244          * Initializes event handlers for the "Send direct message" link on
1245          * profile pages, setting it up to display a dialog box when clicked.
1246          *
1247          * Unlike the repeat confirmation form, this appears to fetch
1248          * the form _from the original link target_, so the form itself
1249          * doesn't need to be in the current document.
1250          *
1251          * @fixme breaks ability to open link in new window?
1252          */
1253         NewDirectMessage: function() {
1254             NDM = $('.entity_send-a-message a');
1255             NDM.attr({'href':NDM.attr('href')+'&ajax=1'});
1256             NDM.bind('click', function() {
1257                 var NDMF = $('.entity_send-a-message form');
1258                 if (NDMF.length === 0) {
1259                     $(this).addClass(SN.C.S.Processing);
1260                     $.get(NDM.attr('href'), null, function(data) {
1261                         $('.entity_send-a-message').append(document._importNode($('form', data)[0], true));
1262                         NDMF = $('.entity_send-a-message .form_notice');
1263                         SN.U.FormNoticeXHR(NDMF);
1264                         SN.U.FormNoticeEnhancements(NDMF);
1265                         NDMF.append('<button class="close">&#215;</button>');
1266                         $('.entity_send-a-message button').click(function(){
1267                             NDMF.hide();
1268                             return false;
1269                         });
1270                         NDM.removeClass(SN.C.S.Processing);
1271                     });
1272                 }
1273                 else {
1274                     NDMF.show();
1275                     $('.entity_send-a-message textarea').focus();
1276                 }
1277                 return false;
1278             });
1279         },
1280
1281         /**
1282          * Return a date object with the current local time on the
1283          * given year, month, and day.
1284          *
1285          * @param {number} year: 4-digit year
1286          * @param {number} month: 0 == January
1287          * @param {number} day: 1 == 1
1288          * @return {Date}
1289          */
1290         GetFullYear: function(year, month, day) {
1291             var date = new Date();
1292             date.setFullYear(year, month, day);
1293
1294             return date;
1295         },
1296
1297         /**
1298          * Some sort of object interface for storing some structured
1299          * information in a cookie.
1300          *
1301          * Appears to be used to save the last-used login nickname?
1302          * That's something that browsers usually take care of for us
1303          * these days, do we really need to do it? Does anything else
1304          * use this interface?
1305          *
1306          * @fixme what is this?
1307          * @fixme should this use non-cookie local storage when available?
1308          */
1309         StatusNetInstance: {
1310             /**
1311              * @fixme what is this?
1312              */
1313             Set: function(value) {
1314                 var SNI = SN.U.StatusNetInstance.Get();
1315                 if (SNI !== null) {
1316                     value = $.extend(SNI, value);
1317                 }
1318
1319                 $.cookie(
1320                     SN.C.S.StatusNetInstance,
1321                     JSON.stringify(value),
1322                     {
1323                         path: '/',
1324                         expires: SN.U.GetFullYear(2029, 0, 1)
1325                     });
1326             },
1327
1328             /**
1329              * @fixme what is this?
1330              */
1331             Get: function() {
1332                 var cookieValue = $.cookie(SN.C.S.StatusNetInstance);
1333                 if (cookieValue !== null) {
1334                     return JSON.parse(cookieValue);
1335                 }
1336                 return null;
1337             },
1338
1339             /**
1340              * @fixme what is this?
1341              */
1342             Delete: function() {
1343                 $.cookie(SN.C.S.StatusNetInstance, null);
1344             }
1345         },
1346
1347         /**
1348          * Check if the current page is a timeline where the current user's
1349          * posts should be displayed immediately on success.
1350          *
1351          * @fixme this should be done in a saner way, with machine-readable
1352          * info about what page we're looking at.
1353          *
1354          * @param {DOMElement} notice: HTML chunk with formatted notice
1355          * @return boolean
1356          */
1357         belongsOnTimeline: function(notice) {
1358             var action = $("body").attr('id');
1359             if (action == 'public') {
1360                 return true;
1361             }
1362
1363             var profileLink = $('#nav_profile a').attr('href');
1364             if (profileLink) {
1365                 var authorUrl = $(notice).find('.entry-title .author a.url').attr('href');
1366                 if (authorUrl == profileLink) {
1367                     if (action == 'all' || action == 'showstream') {
1368                         // Posts always show on your own friends and profile streams.
1369                         return true;
1370                     }
1371                 }
1372             }
1373
1374             // @fixme tag, group, reply timelines should be feasible as well.
1375             // Mismatch between id-based and name-based user/group links currently complicates
1376             // the lookup, since all our inline mentions contain the absolute links but the
1377             // UI links currently on the page use malleable names.
1378
1379             return false;
1380         }
1381     },
1382
1383     Init: {
1384         /**
1385          * If user is logged in, run setup code for the new notice form:
1386          *
1387          *  - char counter
1388          *  - AJAX submission
1389          *  - location events
1390          *  - file upload events
1391          */
1392         NoticeForm: function() {
1393             if ($('body.user_in').length > 0) {
1394                 SN.U.NoticeLocationAttach();
1395
1396                 $('.'+SN.C.S.FormNotice).each(function() {
1397                     SN.U.FormNoticeXHR($(this));
1398                     SN.U.FormNoticeEnhancements($(this));
1399                 });
1400
1401                 SN.U.NoticeDataAttach();
1402             }
1403         },
1404
1405         /**
1406          * Run setup code for notice timeline views items:
1407          *
1408          * - AJAX submission for fave/repeat/reply (if logged in)
1409          * - Attachment link extras ('more' links)
1410          */
1411         Notices: function() {
1412             if ($('body.user_in').length > 0) {
1413                 SN.U.NoticeFavor();
1414                 SN.U.NoticeRepeat();
1415                 SN.U.NoticeReply();
1416                 SN.U.NoticeInlineReplySetup();
1417             }
1418
1419             SN.U.NoticeAttachments();
1420         },
1421
1422         /**
1423          * Run setup code for user & group profile page header area if logged in:
1424          *
1425          * - AJAX submission for sub/unsub/join/leave/nudge
1426          * - AJAX form popup for direct-message
1427          */
1428         EntityActions: function() {
1429             if ($('body.user_in').length > 0) {
1430                 $('.form_user_subscribe').live('click', function() { SN.U.FormXHR($(this)); return false; });
1431                 $('.form_user_unsubscribe').live('click', function() { SN.U.FormXHR($(this)); return false; });
1432                 $('.form_group_join').live('click', function() { SN.U.FormXHR($(this)); return false; });
1433                 $('.form_group_leave').live('click', function() { SN.U.FormXHR($(this)); return false; });
1434                 $('.form_user_nudge').live('click', function() { SN.U.FormXHR($(this)); return false; });
1435
1436                 SN.U.NewDirectMessage();
1437             }
1438         },
1439
1440         /**
1441          * Run setup code for login form:
1442          *
1443          * - loads saved last-used-nickname from cookie
1444          * - sets event handler to save nickname to cookie on submit
1445          *
1446          * @fixme is this necessary? Browsers do their own form saving these days.
1447          */
1448         Login: function() {
1449             if (SN.U.StatusNetInstance.Get() !== null) {
1450                 var nickname = SN.U.StatusNetInstance.Get().Nickname;
1451                 if (nickname !== null) {
1452                     $('#form_login #nickname').val(nickname);
1453                 }
1454             }
1455
1456             $('#form_login').bind('submit', function() {
1457                 SN.U.StatusNetInstance.Set({Nickname: $('#form_login #nickname').val()});
1458                 return true;
1459             });
1460         },
1461
1462         /**
1463          * Add logic to any file upload forms to handle file size limits,
1464          * on browsers that support basic FileAPI.
1465          */
1466         UploadForms: function () {
1467             $('input[type=file]').change(function(event) {
1468                 if (typeof this.files == "object" && this.files.length > 0) {
1469                     var size = 0;
1470                     for (var i = 0; i < this.files.length; i++) {
1471                         size += this.files[i].size;
1472                     }
1473
1474                     var max = SN.U.maxFileSize($(this.form));
1475                     if (max > 0 && size > max) {
1476                         var msg = 'File too large: maximum upload size is %d bytes.';
1477                         alert(msg.replace('%d', max));
1478
1479                         // Clear the files.
1480                         $(this).val('');
1481                         event.preventDefault();
1482                         return false;
1483                     }
1484                 }
1485             });
1486         }
1487     }
1488 };
1489
1490 /**
1491  * Run initialization functions on DOM-ready.
1492  *
1493  * Note that if we're waiting on other scripts to load, this won't happen
1494  * until that's done. To load scripts asynchronously without delaying setup,
1495  * don't start them loading until after DOM-ready time!
1496  */
1497 $(document).ready(function(){
1498     SN.Init.UploadForms();
1499     if ($('.'+SN.C.S.FormNotice).length > 0) {
1500         SN.Init.NoticeForm();
1501     }
1502     if ($('#content .notices').length > 0) {
1503         SN.Init.Notices();
1504     }
1505     if ($('#content .entity_actions').length > 0) {
1506         SN.Init.EntityActions();
1507     }
1508     if ($('#form_login').length > 0) {
1509         SN.Init.Login();
1510     }
1511 });