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/* * jquery.suggest 1.1b - 2007-08-06 * Patched by Mark Jaquith with Alexander Dick's "multiple items" patch to allow for auto-suggesting of more than one tag before submitting * See: http://www.vulgarisoip.com/2007/06/29/jquerysuggest-an-alternative-jquery-based-autocomplete-library/#comment-7228 * * Uses code and techniques from following libraries: * 1. http://www.dyve.net/jquery/?autocomplete * 2. http://dev.jquery.com/browser/trunk/plugins/interface/iautocompleter.js * * All the new stuff written by Peter Vulgaris (www.vulgarisoip.com) * Feel free to do whatever you want with this file * */ (function($) { $.suggest = function(input, options) { var $input, $results, timeout, prevLength, cache, cacheSize; $input = $(input).attr("autocomplete", "off"); $results = $("<ul/>"); timeout = false; // hold timeout ID for suggestion results to appear prevLength = 0; // last recorded length of $input.val() cache = []; // cache MRU list cacheSize = 0; // size of cache in chars (bytes?) $results.addClass(options.resultsClass).appendTo('body'); resetPosition(); $(window) .on( 'load', resetPosition ) // just in case user is changing size of page while loading .on( 'resize', resetPosition ); $input.blur(function() { setTimeout(function() { $results.hide() }, 200); }); $input.keydown(processKey); function resetPosition() { // requires jquery.dimension plugin var offset = $input.offset(); $results.css({ top: (offset.top + input.offsetHeight) + 'px', left: offset.left + 'px' }); } function processKey(e) { // handling up/down/escape requires results to be visible // handling enter/tab requires that AND a result to be selected if ((/27$|38$|40$/.test(e.keyCode) && $results.is(':visible')) || (/^13$|^9$/.test(e.keyCode) && getCurrentResult())) { if (e.preventDefault) e.preventDefault(); if (e.stopPropagation) e.stopPropagation(); e.cancelBubble = true; e.returnValue = false; switch(e.keyCode) { case 38: // up prevResult(); break; case 40: // down nextResult(); break; case 9: // tab case 13: // return selectCurrentResult(); break; case 27: // escape $results.hide(); break; } } else if ($input.val().length != prevLength) { if (timeout) clearTimeout(timeout); timeout = setTimeout(suggest, options.delay); prevLength = $input.val().length; } } function suggest() { var q = $.trim($input.val()), multipleSepPos, items; if ( options.multiple ) { multipleSepPos = q.lastIndexOf(options.multipleSep); if ( multipleSepPos != -1 ) { q = $.trim(q.substr(multipleSepPos + options.multipleSep.length)); } } if (q.length >= options.minchars) { cached = checkCache(q); if (cached) { displayItems(cached['items']); } else { $.get(options.source, {q: q}, function(txt) { $results.hide(); items = parseTxt(txt, q); displayItems(items); addToCache(q, items, txt.length); }); } } else { $results.hide(); } } function checkCache(q) { var i; for (i = 0; i < cache.length; i++) if (cache[i]['q'] == q) { cache.unshift(cache.splice(i, 1)[0]); return cache[0]; } return false; } function addToCache(q, items, size) { var cached; while (cache.length && (cacheSize + size > options.maxCacheSize)) { cached = cache.pop(); cacheSize -= cached['size']; } cache.push({ q: q, size: size, items: items }); cacheSize += size; } function displayItems(items) { var html = '', i; if (!items) return; if (!items.length) { $results.hide(); return; } resetPosition(); // when the form moves after the page has loaded for (i = 0; i < items.length; i++) html += '<li>' + items[i] + '</li>'; $results.html(html).show(); $results .children('li') .mouseover(function() { $results.children('li').removeClass(options.selectClass); $(this).addClass(options.selectClass); }) .click(function(e) { e.preventDefault(); e.stopPropagation(); selectCurrentResult(); }); } function parseTxt(txt, q) { var items = [], tokens = txt.split(options.delimiter), i, token; // parse returned data for non-empty items for (i = 0; i < tokens.length; i++) { token = $.trim(tokens[i]); if (token) { token = token.replace( new RegExp(q, 'ig'), function(q) { return '<span class="' + options.matchClass + '">' + q + '</span>' } ); items[items.length] = token; } } return items; } function getCurrentResult() { var $currentResult; if (!$results.is(':visible')) return false; $currentResult = $results.children('li.' + options.selectClass); if (!$currentResult.length) $currentResult = false; return $currentResult; } function selectCurrentResult() { $currentResult = getCurrentResult(); if ($currentResult) { if ( options.multiple ) { if ( $input.val().indexOf(options.multipleSep) != -1 ) { $currentVal = $input.val().substr( 0, ( $input.val().lastIndexOf(options.multipleSep) + options.multipleSep.length ) ) + ' '; } else { $currentVal = ""; } $input.val( $currentVal + $currentResult.text() + options.multipleSep + ' ' ); $input.focus(); } else { $input.val($currentResult.text()); } $results.hide(); $input.trigger('change'); if (options.onSelect) options.onSelect.apply($input[0]); } } function nextResult() { $currentResult = getCurrentResult(); if ($currentResult) $currentResult .removeClass(options.selectClass) .next() .addClass(options.selectClass); else $results.children('li:first-child').addClass(options.selectClass); } function prevResult() { var $currentResult = getCurrentResult(); if ($currentResult) $currentResult .removeClass(options.selectClass) .prev() .addClass(options.selectClass); else $results.children('li:last-child').addClass(options.selectClass); } } $.fn.suggest = function(source, options) { if (!source) return; options = options || {}; options.multiple = options.multiple || false; options.multipleSep = options.multipleSep || ","; options.source = source; options.delay = options.delay || 100; options.resultsClass = options.resultsClass || 'ac_results'; options.selectClass = options.selectClass || 'ac_over'; options.matchClass = options.matchClass || 'ac_match'; options.minchars = options.minchars || 2; options.delimiter = options.delimiter || '\n'; options.onSelect = options.onSelect || false; options.maxCacheSize = options.maxCacheSize || 65536; this.each(function() { new $.suggest(this, options); }); return this; }; })(jQuery);