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4})}),n.each({Height:"height",Width:"width"},function(a,b){n.each({ 5 padding:"inner"+a,content:b,"":"outer"+a},function(c,d){n.fn[d]=function(d,e){var f=arguments.length&&(c||"boolean"!=typeof d),g=c||(d===!0||e===!0?"margin":"border");return Y(this,function(b,c,d){var e;return n.isWindow(b)?b.document.documentElement["client"+a]:9===b.nodeType?(e=b.documentElement,Math.max(b.body["scroll"+a],e["scroll"+a],b.body["offset"+a],e["offset"+a],e["client"+a])):void 0===d?n.css(b,c,g):n.style(b,c,d,g)},b,f?d:void 0,f,null)}})}),n.fn.extend({bind:function(a,b,c){return this.on(a,null,b,c)},unbind:function(a,b){return this.off(a,null,b)},delegate:function(a,b,c,d){return this.on(b,a,c,d)},undelegate:function(a,b,c){return 1===arguments.length?this.off(a,"**"):this.off(b,a||"**",c)}}),n.fn.size=function(){return this.length},n.fn.andSelf=n.fn.addBack,"function"==typeof define&&define.amd&&define("jquery",[],function(){return n});var nc=a.jQuery,oc=a.$;return n.noConflict=function(b){return a.$===n&&(a.$=oc),b&&a.jQuery===n&&(a.jQuery=nc),n},b||(a.jQuery=a.$=n),n}); 6; 7/** 8 * For jQuery versions less than 3.4.0, this replaces the jQuery.extend 9 * function with the one from jQuery 3.4.0, slightly modified (documented 10 * below) to be compatible with older jQuery versions and browsers. 11 * 12 * This provides the Object.prototype pollution vulnerability fix to Backdrop 13 * installations running other jQuery versions, including the versions shipped 14 * with Backdrop core and sites using jQuery Update module. 15 * 16 * @see https://github.com/jquery/jquery/pull/4333 17 */ 18 19(function (jQuery) { 20 21// Do not override jQuery.extend() if the jQuery version is already >=3.4.0. 22var versionParts = jQuery.fn.jquery.split('.'); 23var majorVersion = parseInt(versionParts[0]); 24var minorVersion = parseInt(versionParts[1]); 25var patchVersion = parseInt(versionParts[2]); 26var isPreReleaseVersion = (patchVersion.toString() !== versionParts[2]); 27if ( 28 (majorVersion > 3) || 29 (majorVersion === 3 && minorVersion > 4) || 30 (majorVersion === 3 && minorVersion === 4 && patchVersion > 0) || 31 (majorVersion === 3 && minorVersion === 4 && patchVersion === 0 && !isPreReleaseVersion) 32) { 33 return; 34} 35 36/** 37 * This is almost verbatim copied from jQuery 3.4.0. 38 * 39 * Only two minor changes have been made: 40 * - The call to isFunction() is changed to jQuery.isFunction(). 41 * - The two calls to Array.isArray() is changed to jQuery.isArray(). 42 * 43 * The above two changes ensure compatibility with all older jQuery versions 44 * (1.4.4 - 3.3.1) and older browser versions (e.g., IE8). 45 */ 46jQuery.extend = jQuery.fn.extend = function() { 47 var options, name, src, copy, copyIsArray, clone, 48 target = arguments[ 0 ] || {}, 49 i = 1, 50 length = arguments.length, 51 deep = false;
52 53 // Handle a deep copy situation 54 if ( typeof target === "boolean" ) { 55 deep = target; 56 57 // Skip the boolean and the target 58 target = arguments[ i ] || {}; 59 i++; 60 } 61 62 // Handle case when target is a string or something (possible in deep copy) 63 if ( typeof target !== "object" && !jQuery.isFunction( target ) ) { 64 target = {}; 65 } 66 67 // Extend jQuery itself if only one argument is passed 68 if ( i === length ) { 69 target = this; 70 i--; 71 } 72 73 for ( ; i < length; i++ ) { 74 75 // Only deal with non-null/undefined values 76 if ( ( options = arguments[ i ] ) != null ) { 77 78 // Extend the base object 79 for ( name in options ) { 80 copy = options[ name ]; 81 82 // Prevent Object.prototype pollution 83 // Prevent never-ending loop 84 if ( name === "__proto__" || target === copy ) { 85 continue; 86 } 87 88 // Recurse if we're merging plain objects or arrays 89 if ( deep && copy && ( jQuery.isPlainObject( copy ) || 90 ( copyIsArray = jQuery.isArray( copy ) ) ) ) { 91 src = target[ name ]; 92 93 // Ensure proper type for the source value 94 if ( copyIsArray && !jQuery.isArray( src ) ) { 95 clone = []; 96 } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { 97 clone = {}; 98 } else { 99 clone = src; 100 } 101 copyIsArray = false; 102 103 // Never move original objects, clone them 104 target[ name ] = jQuery.extend( deep, clone, copy ); 105 106 // Don't bring in undefined values 107 } else if ( copy !== undefined ) { 108 target[ name ] = copy; 109 } 110 } 111 } 112 } 113 114 // Return the modified object 115 return target; 116}; 117 118})(jQuery); 119; 120/** 121 * For jQuery versions less than 3.5.0, this replaces the jQuery.htmlPrefilter() 122 * function with one that fixes these security vulnerabilities while also 123 * retaining the pre-3.5.0 behavior where it's safe to do so. 124 * - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11022 125 * - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11023 126 * 127 * Backdrop includes jQuery 1.12.4, the last stable version in the 1.x branch. 128 * This incorporates only the fix needed for that version, and so is simpler 129 * than the respective port for Drupal 7. 130 */ 131 132(function (jQuery) { 133 134 // Parts of this backport differ by jQuery version. 135 var versionParts = jQuery.fn.jquery.split('.'); 136 var majorVersion = parseInt(versionParts[0]); 137 var minorVersion = parseInt(versionParts[1]); 138 139 // No backport is needed if we're already on jQuery 3.5 or higher. 140 if ( (majorVersion > 3) || (majorVersion === 3 && minorVersion >= 5) ) { 141 return; 142 } 143 144 // Prior to jQuery 3.5, jQuery converted XHTML-style self-closing tags to 145 // their XML equivalent: e.g., "<div />" to "<div></div>". This is 146 // problematic for several reasons, including that it's vulnerable to XSS 147 // attacks. However, since this was jQuery's behavior for many years, many 148 // Drupal modules and jQuery plugins may be relying on it. Therefore, we 149 // preserve that behavior, but for a limited set of tags only, that we believe 150 // to not be vulnerable. This is the set of HTML tags that satisfy all of the 151 // following conditions: 152 // - In DOMPurify's list of HTML tags. If an HTML tag isn't safe enough to 153 // appear in that list, then we don't want to mess with it here either. 154 // @see https://github.com/cure53/DOMPurify/blob/2.0.11/dist/purify.js#L128 155 // - A normal element (not a void, template, text, or foreign element). 156 // @see https://html.spec.whatwg.org/multipage/syntax.html#elements-2 157 // - An element that is still defined by the current HTML specification 158 // (not a deprecated element), because we do not want to rely on how 159 // browsers parse deprecated elements. 160 // @see https://developer.mozilla.org/en-US/docs/Web/HTML/Element 161 // - Not 'html', 'head', or 'body', because this pseudo-XHTML expansion is 162 // designed for fragments, not entire documents. 163 // - Not 'colgroup', because due to an idiosyncrasy of jQuery's original 164 // regular expression, it didn't match on colgroup, and we don't want to 165 // introduce a behavior change for that. 166 var selfClosingTagsToReplace = [ 167 'a', 'abbr', 'address', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 168 'blockquote', 'button', 'canvas', 'caption', 'cite', 'code', 'data', 169 'datalist', 'dd', 'del', 'details', 'dfn', 'div', 'dl', 'dt', 'em', 170 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 171 'h4', 'h5', 'h6', 'header', 'hgroup', 'i', 'ins', 'kbd', 'label', 'legend', 172 'li', 'main', 'map', 'mark', 'menu', 'meter', 'nav', 'ol', 'optgroup', 173 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 174 'ruby', 's', 'samp', 'section', 'select', 'small', 'source', 'span', 175 'strong', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 176 'thead', 'time', 'tr', 'u', 'ul', 'var', 'video' 177 ]; 178 179 // Define regular expressions for <TAG/> and <TAG ATTRIBUTES/>. Doing this as 180 // two expressions makes it easier to target <a/> without also targeting 181 // every tag that starts with "a". 182 var xhtmlRegExpGroup = '(' + selfClosingTagsToReplace.join('|') + ')'; 183 var whitespace = '[\\x20\\t\\r\\n\\f]'; 184 var rxhtmlTagWithoutSpaceOrAttributes = new RegExp('<' + xhtmlRegExpGroup + '\\/>', 'gi'); 185 var rxhtmlTagWithSpaceAndMaybeAttributes = new RegExp('<' + xhtmlRegExpGroup + '(' + whitespace + '[^>]*)\\/>', 'gi'); 186 187 // jQuery 3.5 also fixed a vulnerability for when </select> appears within 188 // an <option> or <optgroup>, but it did that in local code that we can't 189 // backport directly. Instead, we filter such cases out. To do so, we need to 190 // determine when jQuery would otherwise invoke the vulnerable code, which it 191 // uses this regular expression to determine. The regular expression changed 192 // for version 3.0.0 and changed again for 3.4.0. 193 // @see https://github.com/jquery/jquery/blob/1.12.4/dist/jquery.js#L4432 194 // @see https://github.com/jquery/jquery/blob/3.0.0/dist/jquery.js#L4584 195 var rtagName; 196 if (majorVersion < 3) { 197 rtagName = /<([\w:]+)/; 198 } 199 else if (minorVersion < 4) { 200 rtagName = /<([a-z][^\/\0>\x20\t\r\n\f]+)/i; 201 } 202 else { 203 rtagName = /<([a-z][^\/\0>\x20\t\r\n\f]*)/i; 204 } 205 206 // The regular expression that jQuery uses to determine which self-closing 207 // tags to expand to open and close tags. This is vulnerable, because it 208 // matches all tag names except the few excluded ones. We only use this 209 // expression for determining vulnerability. The expression changed for 210 // version 3, but we only need to check for vulnerability in versions 1 and 2, 211 // so we use the expression from those versions. 212 // @see https://github.com/jquery/jquery/blob/1.12.4/dist/jquery.js#L5874 213 var rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:-]+)[^>]*)\/>/gi; 214 215 jQuery.extend({ 216 htmlPrefilter: function (html) { 217 // This is how jQuery determines the first tag in the HTML. 218 // @see https://github.com/jquery/jquery/blob/1.12.4/dist/jquery.js#L6353 219 var tag = ( rtagName.exec( html ) || [ "", "" ] )[ 1 ].toLowerCase(); 220
221 // It is not valid HTML for <option> or <optgroup> to have <select> as 222 // either a descendant or sibling, and attempts to inject one can cause 223 // XSS on jQuery versions before 3.5. Since this is invalid HTML and a 224 // possible XSS attack, reject the entire string. 225 // @see https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11023 226 if ((tag === 'option' || tag === 'optgroup') && html.match(/<\/?select/i)) { 227 html = ''; 228 } 229 230 // Retain jQuery's prior to 3.5 conversion of pseudo-XHTML, but for only 231 // the tags in the `selfClosingTagsToReplace` list defined above. 232 // @see https://github.com/jquery/jquery/blob/1.12.4/dist/jquery.js#L6130 233 // @see https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11022 234 html = html.replace(rxhtmlTagWithoutSpaceOrAttributes, "<$1></$1>"); 235 html = html.replace(rxhtmlTagWithSpaceAndMaybeAttributes, "<$1$2></$1>"); 236 237 return html; 238 } 239 }); 240 241})(jQuery); 242; 243/** 244 * jQuery Once Plugin 1.2.6 245 * http://github.com/robloach/jquery-once 246 * 247 * Dual licensed under the MIT and GPL licenses: 248 * http://www.opensource.org/licenses/mit-license.php 249 * http://www.gnu.org/licenses/gpl.html 250 * 251 * This library changed its function signature in its 2.x branch. This is a 252 * forked version that is jQuery 3.x compatible. 253 * 254 * See https://github.com/backdrop/backdrop-issues/issues/6195 255 */ 256 257(function (factory) { 258 "use strict"; 259 if (typeof exports === 'object') { 260 factory(require('jquery')); 261 } else if (typeof define === 'function' && define.amd) { 262 define(['jquery'], factory); 263 } else { 264 factory(jQuery); 265 } 266}(function ($) { 267 "use strict"; 268 var cache = {}, uuid = 0; 269 270 /** 271 * Filters elements by whether they have not yet been processed. 272 * 273 * @param id 274 * (Optional) If this is a string, then it will be used as the CSS class 275 * name that is applied to the elements for determining whether it has 276 * already been processed. The elements will get a class in the form of 277 * "id-processed". 278 * 279 * If the id parameter is a function, it will be passed off to the fn 280 * parameter and the id will become a unique identifier, represented as a 281 * number. 282 * 283 * When the id is neither a string or a function, it becomes a unique 284 * identifier, depicted as a number. The element's class will then be 285 * represented in the form of "jquery-once-#-processed". 286 * 287 * Take note that the id must be valid for usage as an element's class name. 288 * @param fn 289 * (Optional) If given, this function will be called for each element that 290 * has not yet been processed. The function's return value follows the same 291 * logic as $.each(). Returning true will continue to the next matched 292 * element in the set, while returning false will entirely break the 293 * iteration. 294 * 295 * @api public 296 */ 297 $.fn.once = function (id, fn) { 298 if (typeof id !== 'string') { 299 // Generate a numeric ID if the id passed can't be used as a CSS class. 300 if (!(id in cache)) { 301 cache[id] = ++uuid; 302 } 303 // When the fn parameter is not passed, we interpret it from the id. 304 if (!fn) { 305 fn = id; 306 } 307 id = 'jquery-once-' + cache[id]; 308 } 309 // Remove elements from the set that have already been processed. 310 var name = id + '-processed'; 311 var elements = this.not('.' + name).addClass(name); 312 313 return typeof fn == 'function' ? elements.each(fn) : elements; 314 }; 315 316 /** 317 * Filters elements that have been processed once already. 318 * 319 * @param id 320 * A required string representing the name of the class which should be used 321 * when filtering the elements. This only filters elements that have already 322 * been processed by the once function. The id should be the same id that 323 * was originally passed to the once() function. 324 * @param fn 325 * (Optional) If given, this function will be called for each element that 326 * has not yet been processed. The function's return value follows the same 327 * logic as $.each(). Returning true will continue to the next matched 328 * element in the set, while returning false will entirely break the 329 * iteration. 330 * 331 * @api public 332 */ 333 $.fn.removeOnce = function (id, fn) { 334 var name = id + '-processed'; 335 var elements = this.filter('.' + name).removeClass(name); 336 337 return typeof fn == 'function' ? elements.each(fn) : elements; 338 }; 339})); 340; 341/** 342 * Main JavaScript file for Backdrop CMS. 343 * 344 * This file provides central functionality to Backdrop, including attaching 345 * behaviors (the main way of interacting with JS in Backdrop), theme wrappers, 346 * and localization functions. 347 */ 348(function ($, undefined) { 349
350// Define the main Backdrop object that holds settings, behavior callbacks, and 351// translated strings. 352window.Backdrop = window.Backdrop || {}; 353$.extend(true, window.Backdrop, { 'settings': {}, 'behaviors': {}, 'locale': {} }); 354 355// Alias the Backdrop namespace to Drupal if compatibility is enabled. 356if (Backdrop.settings.drupalCompatibility) { 357 window.Drupal = Backdrop; 358} 359 360// Pre-filter Ajax requests to guard against XSS attacks. 361// This is similar to the fix that is built in to jQuery 3.0 and higher. 362// See https://github.com/jquery/jquery/issues/2432 363$.ajaxPrefilter(function (s) { 364 if (s.crossDomain) { 365 s.contents.script = false; 366 } 367}); 368 369 /** 370 * Attach all registered behaviors to a page element. 371 * 372 * Behaviors are event-triggered actions that attach to page elements, enhancing 373 * default non-JavaScript UIs. Behaviors are registered in the Backdrop.behaviors 374 * object using the method 'attach' and optionally also 'detach' as follows: 375 * @code 376 * Backdrop.behaviors.behaviorName = { 377 * attach: function (context, settings) { 378 * ... 379 * }, 380 * detach: function (context, settings, trigger) { 381 * ... 382 * } 383 * }; 384 * @endcode 385 * 386 * Backdrop.attachBehaviors is added below to the jQuery.ready event and 387 * therefore runs on initial page load. Developers implementing Ajax in their 388 * solutions should also call this function after new page content has been 389 * loaded, feeding in an element to be processed, in order to attach all 390 * behaviors to the new content. 391 * 392 * Behaviors should use 393 * @code 394 * var elements = $(context).find(selector).once('behavior-name'); 395 * @endcode 396 * to ensure the behavior is attached only once to a given element. (Doing so 397 * enables the reprocessing of given elements, which may be needed on occasion 398 * despite the ability to limit behavior attachment to a particular element.) 399 * 400 * @param context 401 * An element to attach behaviors to. If none is given, the document element 402 * is used. 403 * @param settings 404 * An object containing settings for the current context. If none is given, 405 * the global Backdrop.settings object is used. 406 */ 407Backdrop.attachBehaviors = function (context, settings) { 408 context = context || document; 409 settings = settings || Backdrop.settings; 410 // Execute all of them. 411 $.each(Backdrop.behaviors, function () { 412 if (typeof this.attach === 'function') { 413 this.attach(context, settings); 414 } 415 }); 416}; 417 418/** 419 * Detach registered behaviors from a page element. 420 * 421 * Developers implementing AHAH/Ajax in their solutions should call this 422 * function before page content is about to be removed, feeding in an element 423 * to be processed, in order to allow special behaviors to detach from the 424 * content. 425 * 426 * Such implementations should look for the class name that was added in their 427 * corresponding Backdrop.behaviors.behaviorName.attach implementation, i.e. 428 * behaviorName-processed, to ensure the behavior is detached only from 429 * previously processed elements. 430 * 431 * @param context 432 * An element to detach behaviors from. If none is given, the document element 433 * is used. 434 * @param settings 435 * An object containing settings for the current context. If none given, the 436 * global Backdrop.settings object is used. 437 * @param trigger 438 * A string containing what's causing the behaviors to be detached. The 439 * possible triggers are: 440 * - unload: (default) The context element is being removed from the DOM. 441 * - move: The element is about to be moved within the DOM (for example, 442 * during a tabledrag row swap). After the move is completed, 443 * Backdrop.attachBehaviors() is called, so that the behavior can undo 444 * whatever it did in response to the move. Many behaviors won't need to 445 * do anything in response to the element being moved, but because IFRAME 446 * elements reload their "src" when being moved within the DOM, behaviors 447 * bound to IFRAME elements (like WYSIWYG editors) may need to take some 448 * action. 449 * - serialize: When an Ajax form is submitted, this is called with the 450 * form as the context. This provides every behavior within the form an 451 * opportunity to ensure that the field elements have correct content 452 * in them before the form is serialized. The canonical use-case is so 453 * that WYSIWYG editors can update the hidden textarea to which they are 454 * bound. 455 * 456 * @see Backdrop.attachBehaviors 457 */ 458Backdrop.detachBehaviors = function (context, settings, trigger) { 459 context = context || document; 460 settings = settings || Backdrop.settings; 461 trigger = trigger || 'unload'; 462 // Execute all of them. 463 $.each(Backdrop.behaviors, function () { 464 if (typeof this.detach === 'function') { 465 this.detach(context, settings, trigger); 466 } 467 }); 468}; 469 470/** 471 * Encode special characters in a plain-text string for display as HTML. 472 * 473 * @param str 474 * The string to be encoded. 475 * @return 476 * The encoded string. 477 * @ingroup sanitization 478 */ 479Backdrop.checkPlain = function (str) { 480 str = str.toString() 481 .replace(/&/g, '&') 482 .replace(/'/g, ''') 483 .replace(/"/g, '"') 484 .replace(/</g, '<') 485 .replace(/>/g, '>'); 486 return str; 487}; 488 489/** 490 * Replace placeholders with sanitized values in a string. 491 * 492 * @param str 493 * A string with placeholders. 494 * @param args 495 * An object of replacements pairs to make. Incidences of any key in this 496 * array are replaced with the corresponding value. Based on the first 497 * character of the key, the value is escaped and/or themed: 498 * - !variable: inserted as is 499 * - @variable: escape plain text to HTML (Backdrop.checkPlain) 500 * - %variable: escape text and theme as a placeholder for user-submitted 501 * content (checkPlain + Backdrop.theme('placeholder')) 502 * 503 * @see Backdrop.t() 504 * @ingroup sanitization 505 */ 506Backdrop.formatString = function(str, args) { 507 // Transform arguments before inserting them. 508 for (var key in args) { 509 if (args.hasOwnProperty(key)) { 510 switch (key.charAt(0)) { 511 // Escaped only. 512 case '@': 513 args[key] = Backdrop.checkPlain(args[key]); 514 break; 515 // Pass-through. 516 case '!': 517 break; 518 // Escaped and placeholder. 519 case '%': 520 default: 521 args[key] = Backdrop.theme('placeholder', args[key]); 522 break; 523 } 524 } 525 } 526 return Backdrop.stringReplace(str, args, null); 527}; 528 529/** 530 * Generates a string representation for the given byte count. 531 * 532 * @param size 533 * A size in bytes. 534 * @param langcode 535 * Optional language code to translate to a language other than what is used 536 * to display the page. 537 * 538 * @return 539 * A translated string representation of the size. 540 * 541 * @since Backdrop 1.11.0 542 */ 543Backdrop.formatSize = function(size, langcode) { 544 var kilobyte = 1024; 545 if (size < kilobyte) { 546 return Backdrop.formatPlural(size, '1 byte', '@count bytes', {}, {'langcode': langcode }); 547 } 548 else { 549 // Convert bytes to kilobytes and round. 550 size = Number.parseFloat(size / kilobyte).toFixed(2); 551 var units = [ 552 Backdrop.t('@size KB', {}, {'langcode': langcode}), 553 Backdrop.t('@size MB', {}, {'langcode': langcode}), 554 Backdrop.t('@size GB', {}, {'langcode': langcode}), 555 Backdrop.t('@size TB', {}, {'langcode': langcode}) 556 ]; 557 var unit; 558 for (var n = 0; n < units.length; n++) { 559 unit = units[n]; 560 if (size >= kilobyte) { 561 size = Number.parseFloat(size / kilobyte).toFixed(2); 562 } 563 else { 564 break; 565 } 566 } 567 return unit.replace('@size', size); 568 } 569}; 570 571/** 572 * Replace substring. 573 * 574 * The longest keys will be tried first. Once a substring has been replaced, 575 * its new value will not be searched again. 576 * 577 * @param {String} str 578 * A string with placeholders. 579 * @param {Object} args 580 * Key-value pairs. 581 * @param {Array|null} keys 582 * Array of keys from the "args". Internal use only. 583 * 584 * @return {String} 585 * Returns the replaced string. 586 */ 587Backdrop.stringReplace = function (str, args, keys) { 588 if (str.length === 0) { 589 return str; 590 } 591 592 // If the array of keys is not passed then collect the keys from the args. 593 if (!Array.isArray(keys)) { 594 keys = []; 595 for (var k in args) { 596 if (args.hasOwnProperty(k)) { 597 keys.push(k); 598 } 599 } 600 601 // Order the keys by the character length. The shortest one is the first. 602 keys.sort(function (a, b) { return a.length - b.length; }); 603 } 604 605 if (keys.length === 0) { 606 return str; 607 } 608 609 // Take next longest one from the end. 610 var key = keys.pop(); 611 var fragments = str.split(key); 612 613 if (keys.length) { 614 for (var i = 0; i < fragments.length; i++) { 615 // Process each fragment with a copy of remaining keys. 616 fragments[i] = Backdrop.stringReplace(fragments[i], args, keys.slice(0)); 617 } 618 } 619 620 return fragments.join(args[key]); 621}; 622 623/** 624 * Translate strings to the page language or a given language. 625 * 626 * See the documentation of the server-side t() function for further details. 627 * 628 * @param str 629 * A string containing the English string to translate. 630 * @param args 631 * An object of replacements pairs to make after translation. Incidences 632 * of any key in this array are replaced with the corresponding value. 633 * See Backdrop.formatString(). 634 * 635 * @param options 636 * - 'context' (defaults to the empty context): The context the source string 637 * belongs to. 638 * 639 * @return 640 * The translated string. 641 */ 642Backdrop.t = function (str, args, options) { 643 options = options || {}; 644 options.context = options.context || ''; 645 646 // Fetch the localized version of the string. 647 if (Backdrop.locale.strings && Backdrop.locale.strings[options.context] && Backdrop.locale.strings[options.context][str]) { 648 str = Backdrop.locale.strings[options.context][str]; 649 } 650 651 if (args) { 652 str = Backdrop.formatString(str, args); 653 } 654 return str; 655}; 656 657/** 658 * Format a string containing a count of items. 659 * 660 * This function ensures that the string is pluralized correctly. Since Backdrop.t() is 661 * called by this function, make sure not to pass already-localized strings to it. 662 * 663 * See the documentation of the server-side format_plural() function for further details. 664 * 665 * @param count 666 * The item count to display. 667 * @param singular 668 * The string for the singular case. Please make sure it is clear this is 669 * singular, to ease translation (e.g. use "1 new comment" instead of "1 new"). 670 * Do not use @count in the singular string. 671 * @param plural 672 * The string for the plural case. Please make sure it is clear this is plural, 673 * to ease translation. Use @count in place of the item count, as in "@count 674 * new comments". 675 * @param args 676 * An object of replacements pairs to make after translation. Incidences 677 * of any key in this array are replaced with the corresponding value. 678 * See Backdrop.formatString(). 679 * Note that you do not need to include @count in this array.
680 * This replacement is done automatically for the plural case. 681 * @param options 682 * The options to pass to the Backdrop.t() function. 683 * @return 684 * A translated string. 685 */ 686Backdrop.formatPlural = function (count, singular, plural, args, options) { 687 args = args || {}; 688 args['@count'] = count; 689 // Determine the index of the plural form. 690 var index = Backdrop.locale.pluralFormula ? Backdrop.locale.pluralFormula(args['@count']) : ((args['@count'] == 1) ? 0 : 1); 691 692 if (index == 0) { 693 return Backdrop.t(singular, args, options); 694 } 695 else if (index == 1) { 696 return Backdrop.t(plural, args, options); 697 } 698 else { 699 args['@count[' + index + ']'] = args['@count']; 700 delete args['@count']; 701 return Backdrop.t(plural.replace('@count', '@count[' + index + ']'), args, options); 702 } 703}; 704 705/** 706 * Returns the passed in URL as an absolute URL. 707 * 708 * @param url 709 * The URL string to be normalized to an absolute URL. 710 * 711 * @return 712 * The normalized, absolute URL. 713 * 714 * @see https://github.com/angular/angular.js/blob/v1.4.4/src/ng/urlUtils.js 715 * @see https://grack.com/blog/2009/11/17/absolutizing-url-in-javascript 716 * @see https://github.com/jquery/jquery-ui/blob/1.11.4/ui/tabs.js#L53 717 */ 718Backdrop.absoluteUrl = function (url) { 719 var urlParsingNode = document.createElement('a'); 720 721 // Decode the URL first; this is required by IE <= 6. Decoding non-UTF-8 722 // strings may throw an exception. 723 try { 724 url = decodeURIComponent(url); 725 } catch (e) {} 726 727 urlParsingNode.setAttribute('href', url); 728 729 // IE <= 7 normalizes the URL when assigned to the anchor node similar to 730 // the other browsers. 731 return urlParsingNode.cloneNode(false).href; 732}; 733 734/** 735 * Returns the passed in URL as a relative URL to the current site. 736 * 737 * Relative URLs are returned only for local URLs. This will return the full 738 * URL for remote URLs. 739 * 740 * @param url 741 * The URL string to be normalized to a relative URL. 742 * 743 * @return 744 * The normalized, relative URL with a leading slash. 745 * 746 * @since 1.11.0 747 */ 748Backdrop.relativeUrl = function (url) { 749 // Normalize to absolute first. 750 relativeUrl = Backdrop.absoluteUrl(url); 751 // Port is only present on non-HTTP(S) URLs. 752 var port = window.location.port ? (':' + window.location.port) : ''; 753 return relativeUrl.replace(window.location.protocol + '//' + window.location.hostname + port, ''); 754}; 755 756/** 757 * Sanitizes a URL for use with jQuery.ajax(). 758 * 759 * @param url 760 * The URL string to be sanitized. 761 * 762 * @return 763 * The sanitized URL. 764 */ 765Backdrop.sanitizeAjaxUrl = function (url) { 766 var regex = /\=\?(&|$)/; 767 while (url.match(regex)) { 768 url = url.replace(regex, ''); 769 } 770 return url; 771} 772 773/** 774 * Returns true if the URL is within Backdrop's base path. 775 * 776 * @param url 777 * The URL string to be tested. 778 * 779 * @return 780 * Boolean true if local. 781 * 782 * @see https://github.com/jquery/jquery-ui/blob/1.11.4/ui/tabs.js#L58 783 */ 784Backdrop.urlIsLocal = function (url) { 785 // Always use browser-derived absolute URLs in the comparison, to avoid 786 // attempts to break out of the base path using directory traversal. 787 var absoluteUrl = Backdrop.absoluteUrl(url); 788 var protocol = location.protocol; 789 790 // Consider URLs that match this site's base URL but use HTTPS instead of HTTP 791 // as local as well. 792 if (protocol === 'http:' && absoluteUrl.indexOf('https:') === 0) { 793 protocol = 'https:'; 794 } 795 var baseUrl = protocol + '//' + location.host + Backdrop.settings.basePath.slice(0, -1); 796 797 // Decoding non-UTF-8 strings may throw an exception. 798 try { 799 absoluteUrl = decodeURIComponent(absoluteUrl); 800 } catch (e) {} 801 try { 802 baseUrl = decodeURIComponent(baseUrl); 803 } catch (e) {} 804 805 // The given URL matches the site's base URL, or has a path under the site's 806 // base URL. 807 return absoluteUrl === baseUrl || absoluteUrl.indexOf(baseUrl + '/') === 0; 808}; 809 810/** 811 * Generate the themed representation of a Backdrop object. 812 * 813 * All requests for themed output must go through this function. It examines 814 * the request and routes it to the appropriate theme function. If the current 815 * theme does not provide an override function, the generic theme function is 816 * called. 817 * 818 * For example, to retrieve the HTML for text that should be emphasized and 819 * displayed as a placeholder inside a sentence, call
820 * Backdrop.theme('placeholder', text). 821 * 822 * @param func 823 * The name of the theme function to call. 824 * @param ... 825 * Additional arguments to pass along to the theme function. 826 * @return 827 * Any data the theme function returns. This could be a plain HTML string, 828 * but also a complex object. 829 */ 830Backdrop.theme = function (func) { 831 var args = Array.prototype.slice.apply(arguments, [1]); 832 833 return (Backdrop.theme[func] || Backdrop.theme.prototype[func]).apply(this, args); 834}; 835 836/** 837 * Freeze the current body height (as minimum height). Used to prevent 838 * unnecessary upwards scrolling when doing DOM manipulations. 839 */ 840Backdrop.freezeHeight = function () { 841 Backdrop.unfreezeHeight(); 842 $('<div id="freeze-height"></div>').css({ 843 position: 'absolute', 844 top: '0px', 845 left: '0px', 846 width: '1px', 847 height: $('body').css('height') 848 }).appendTo('body'); 849}; 850 851/** 852 * Unfreeze the body height. 853 */ 854Backdrop.unfreezeHeight = function () { 855 $('#freeze-height').remove(); 856}; 857 858/** 859 * Encodes a Backdrop path for use in a URL. 860 * 861 * For aesthetic reasons slashes are not escaped. 862 */ 863Backdrop.encodePath = function (item) { 864 return window.encodeURIComponent(item).replace(/%2F/g, '/'); 865}; 866 867/** 868 * Get the text selection in a textarea. 869 */ 870Backdrop.getSelection = function (element) { 871 var range1, range2, start, end; 872 if (typeof element.selectionStart != 'number' && document.selection) { 873 // The current selection. 874 range1 = document.selection.createRange(); 875 range2 = range1.duplicate(); 876 // Select all text. 877 range2.moveToElementText(element); 878 // Now move 'dummy' end point to end point of original range. 879 range2.setEndPoint('EndToEnd', range1); 880 // Now we can calculate start and end points. 881 start = range2.text.length - range1.text.length; 882 end = start + range1.text.length; 883 return { 'start': start, 'end': end }; 884 } 885 return { 'start': element.selectionStart, 'end': element.selectionEnd }; 886}; 887 888/** 889 * Add a global variable which determines if the window is being unloaded. 890 * 891 * This is primarily used by Backdrop.displayAjaxError(). 892 */ 893Backdrop.beforeUnloadCalled = false; 894$(window).on('beforeunload pagehide', function () { 895 Backdrop.beforeUnloadCalled = true; 896}); 897 898/** 899 * Displays a JavaScript error from an Ajax response when appropriate to do so. 900 */ 901Backdrop.displayAjaxError = function (message) { 902 // Skip displaying the message if the user deliberately aborted (for example, 903 // by reloading the page or navigating to a different page) while the Ajax 904 // request was still ongoing. See, for example, the discussion at 905 // http://stackoverflow.com/questions/699941/handle-ajax-error-when-a-user-clicks-refresh. 906 if (!Backdrop.beforeUnloadCalled) { 907 alert(message); 908 } 909}; 910 911/** 912 * Build an error message from an Ajax response. 913 */ 914Backdrop.ajaxError = function (xmlhttp, uri, customMessage) { 915 var statusCode, statusText, pathText, responseText, readyStateText, message; 916 if (xmlhttp.status) { 917 statusCode = "\n" + Backdrop.t("An AJAX HTTP error occurred.") + "\n" + Backdrop.t("HTTP Result Code: !status", {'!status': xmlhttp.status}); 918 } 919 else { 920 statusCode = "\n" + Backdrop.t("An AJAX HTTP request terminated abnormally."); 921 } 922 statusCode += "\n" + Backdrop.t("Debugging information follows."); 923 pathText = "\n" + Backdrop.t("Path: !uri", {'!uri': uri} ); 924 statusText = ''; 925 // In some cases, when statusCode == 0, xmlhttp.statusText may not be defined. 926 // Unfortunately, testing for it with typeof, etc, doesn't seem to catch that 927 // and the test causes an exception. So we need to catch the exception here. 928 try { 929 statusText = "\n" + Backdrop.t("StatusText: !statusText", {'!statusText': xmlhttp.statusText.trim()}); 930 } 931 catch (e) {} 932 933 responseText = ''; 934 // Again, we don't have a way to know for sure whether accessing 935 // xmlhttp.responseText is going to throw an exception. So we'll catch it. 936 try { 937 responseText = "\n" + Backdrop.t("ResponseText: !responseText", {'!responseText': xmlhttp.responseText.trim() } ); 938 } catch (e) {} 939 940 // Make the responseText more readable by stripping HTML tags and newlines. 941 responseText = responseText.replace(/<("[^"]*"|'[^']*'|[^'">])*>/gi,""); 942 responseText = responseText.replace(/[\n]+\s+/g,"\n"); 943 944 // We don't need readyState except for status == 0. 945 readyStateText = xmlhttp.status == 0 ? ("\n" + Backdrop.t("ReadyState: !readyState", {'!readyState': xmlhttp.readyState})) : ""; 946 947 // Additional message beyond what the xmlhttp object provides. 948 customMessage = customMessage ? ("\n" + Backdrop.t("CustomMessage: !customMessage", {'!customMessage': customMessage})) : ""; 949 950 message = statusCode + pathText + statusText + customMessage + responseText + readyStateText; 951 return message; 952}; 953 954/** 955 * Run a callback after the given font has been loaded. 956 * 957 * If the font is already loaded, the callback will be executed immediately. 958 * 959 * @param fontName 960 * Font name as shown in CSS. 961 * @param callback 962 * Function to run once font has loaded. 963 * 964 * @since 1.4.5 965 */ 966Backdrop.isFontLoaded = function(fontName, callback) { 967 if (typeof fontName === 'undefined') { 968 return false;
969 } 970 971 if (typeof Backdrop.fontsLoaded[fontName] === 'undefined') { 972 Backdrop.fontsLoaded[fontName] = false; 973 } 974 else if (Backdrop.fontsLoaded[fontName]) { 975 // Fonts loaded, run the callback and don't run anything else. 976 if (typeof callback !== 'undefined') { 977 callback(); 978 } 979 return true; 980 } 981 982 var $body = $('body'); 983 var checkFontCounter = 0; 984 // Append an invisible element that will be monospace font or our desired 985 // font. We're using a repeating i because the characters width will 986 // drastically change when it's monospace vs. proportional font. 987 var $checkFontElement = $('<span id="check-font" style="font-family: \'' + fontName + '\', monospace;">iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii</span>'); 988 // Control is the same but it will always be our 'control' font, monospace. 989 var $checkFontElementControl = $checkFontElement.clone().attr('id', 'check-font-control').css('font-family', 'monospace'); 990 var $checkFontElements = $('<span id="check-font-wrapper" aria-hidden="true" style="visibility: hidden; position: absolute; z-index: -100;"></span>').append($checkFontElement).append($checkFontElementControl); 991 $body.append($checkFontElements); 992 993 // Function to check the width of the font, if it's substantially different 994 // we'll know we our real font has loaded 995 function checkFont() { 996 var currentWidth = $checkFontElement.width(); 997 var controlWidth = $checkFontElementControl.width(); 998 if (controlWidth !== currentWidth || checkFontCounter >= 60) { 999 Backdrop.fontsLoaded[fontName] = true; 1000 // If our font has loaded, or it's been 6 seconds 1001 if (typeof callback !== 'undefined') { 1002 callback(); 1003 } 1004 // Clean up after ourselves 1005 clearInterval(checkFontInterval); 1006 $checkFontElements.remove(); 1007 } 1008 checkFontCounter++; 1009 } 1010 var checkFontInterval = setInterval(checkFont, 100); 1011 1012 // If we got here, font is not yet loaded, but the callback will be fired 1013 // when it is ready. 1014 return false; 1015}; 1016if (typeof Backdrop.fontsLoaded === 'undefined') { 1017 Backdrop.fontsLoaded = {}; 1018} 1019 1020// Class indicating that JS is enabled; used for styling purpose. 1021$('html').addClass('js'); 1022 1023/** 1024 * Additions to jQuery.support. 1025 */ 1026$(function () { 1027 /** 1028 * Boolean indicating whether or not position:fixed is supported. 1029 */ 1030 if (jQuery.support.positionFixed === undefined) { 1031 var el = $('<div style="position:fixed; top:10px" />').appendTo(document.body); 1032 jQuery.support.positionFixed = el[0].offsetTop === 10; 1033 el.remove(); 1034 } 1035}); 1036 1037// On page ready, attach behaviors in which all other Backdrop JS is handled. 1038$(function () { 1039 Backdrop.attachBehaviors(document, Backdrop.settings); 1040}); 1041 1042/** 1043 * The default themes. 1044 */ 1045Backdrop.theme.prototype = { 1046 1047 /** 1048 * Formats text for emphasized display in a placeholder inside a sentence. 1049 * 1050 * @param str 1051 * The text to format (plain-text). 1052 * @return 1053 * The formatted text (html). 1054 */ 1055 placeholder: function (str) { 1056 return '<em class="placeholder">' + Backdrop.checkPlain(str) + '</em>'; 1057 } 1058}; 1059 1060/** 1061 * Add helper functions for feature detection 1062 */ 1063Backdrop.featureDetect = {}; 1064 1065/** 1066 * Tests for flex-wrap as it's typically most important in flexbox layouts. 1067 * 1068 * @return {boolean} True if browser supports flex-wrap. 1069 * 1070 * @since 1.4.4 1071 */ 1072Backdrop.featureDetect.flexbox = function() { 1073 var $body = $('body'), 1074 $flexboxTestElement = $('<div style="display: flex; flex-wrap: wrap; width: 0; height: 0;"></div>'); 1075 1076 if ($body.hasClass('has-flexbox')) { 1077 return true; 1078 } else if ($body.hasClass('no-flexbox')) { 1079 return false; 1080 } else { 1081 $body.append($flexboxTestElement); 1082 if ($flexboxTestElement.css('display') === 'flex' && $flexboxTestElement.css('flex-wrap') === 'wrap') { 1083 $body.addClass('has-flexbox'); 1084 $flexboxTestElement.remove(); 1085 return true; 1086 } 1087 else { 1088 $body.addClass('no-flexbox'); 1089 $flexboxTestElement.remove(); 1090 return false; 1091 } 1092 } 1093}; 1094 1095/** 1096 * Resource friendly window resize function 1097 * Groups all window resize functions and runs them only when a frame comes up 1098 * From: developer.mozilla.org/en-US/docs/Web/Events/resize#requestAnimationFrame_customEvent 1099 * 1100 * Example use: 1101 * @code 1102 * Backdrop.optimizedResize.add(function() { 1103 * console.log('Smooth AND resource-efficient!'); 1104 * }); 1105 * @endcode 1106 */ 1107Backdrop.optimizedResize = (function() { 1108 // Set defaults. 1109 var callbacks = {}; 1110 var running = false;
1111 var counter = 0; 1112 1113 // Fired on resize event. 1114 function resize() { 1115 if (!running) { 1116 running = true; 1117 // Provide setTimeout fallback to old browsers. 1118 if (window.requestAnimationFrame) { 1119 window.requestAnimationFrame(runCallbacks); 1120 } else { 1121 setTimeout(runCallbacks, 66); 1122 } 1123 } 1124 } 1125 1126 // Run the actual callbacks. 1127 function runCallbacks() { 1128 for (var callbackName in callbacks) { 1129 if (callbacks.hasOwnProperty(callbackName)) { 1130 callbacks[callbackName](); 1131 } 1132 } 1133 running = false; 1134 } 1135 1136 // Adds callback to loop. 1137 function addCallback(callback, callbackName) { 1138 // Populate a unique callback name if one is not provided. 1139 callbackName = callbackName || ('callback-' + (counter++)); 1140 if (callback) { 1141 callbacks[callbackName] = callback; 1142 } 1143 } 1144 1145 // Removes a callback from the list of resize handlers. 1146 function removeCallback(callbackName) { 1147 if (callbacks[callbackName]) { 1148 delete callbacks[callbackName]; 1149 } 1150 } 1151 1152 return { 1153 // Public methods to add/remove callbacks. 1154 add: function(callback, callbackName) { 1155 if (!callbacks.length) { 1156 window.addEventListener('resize', resize); 1157 window.addEventListener('scroll', resize); 1158 } 1159 addCallback(callback, callbackName); 1160 }, 1161 remove: function(callbackName) { 1162 removeCallback(callbackName); 1163 }, 1164 trigger: function() { 1165 runCallbacks(); 1166 } 1167 } 1168}()); 1169 1170/** 1171 * Limits the invocations of a function in a given time frame. 1172 * 1173 * This can be useful to respond to an event that fires very frequently, 1174 * such as a "keyup" event while a user is typing in a field. 1175 * 1176 * A common use of debouncing in other systems is window resizing, 1177 * however Backdrop provides the Backdrop.optimizedResize() method, 1178 * which should be used for that purpose. 1179 * 1180 * @param function func 1181 * The function to be invoked. 1182 * @param number wait 1183 * The time period within which the callback function should only be 1184 * invoked once. For example if the wait period is 250ms, then the callback 1185 * will only be called at most 4 times per second. 1186 * @param bool immediate 1187 * Whether we wait at the beginning or end to execute the function. 1188 * 1189 * @return function 1190 * The debounced function. 1191 * 1192 * @since 1.18.2 Method added. 1193 */ 1194Backdrop.debounce = function (func, wait, immediate) { 1195 var timeout; 1196 var result; 1197 return function () { 1198 for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) { 1199 args[_key] = arguments[_key]; 1200 } 1201 1202 var context = this; 1203 1204 var later = function later() { 1205 timeout = null; 1206 1207 if (!immediate) { 1208 result = func.apply(context, args); 1209 } 1210 }; 1211 1212 var callNow = immediate && !timeout; 1213 clearTimeout(timeout); 1214 timeout = setTimeout(later, wait); 1215 1216 if (callNow) { 1217 result = func.apply(context, args); 1218 } 1219 1220 return result; 1221 }; 1222}; 1223 1224})(jQuery); 1225;
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