(function($) { var reEscape = new RegExp('(\\' + ['/', '.', '*', '+', '?', '|', '(', ')', '[', ']', '{', '}', '\\'].join('|\\') + ')', 'g'); function fnFormatResult(value, data, currentValue) { var pattern = '(' + currentValue.replace(reEscape, '\\$1') + ')'; return value.replace(new RegExp(pattern, 'gi'), '<strong>$1<\/strong>') } function Autocomplete(el, options) { this.el = $(el); this.el.attr('autocomplete', 'off'); this.suggestions = []; this.data = []; this.badQueries = []; this.selectedIndex = -1; this.currentValue = this.el.val(); this.intervalId = 0; this.cachedResponse = []; this.onChangeInterval = null; this.ignoreValueChange = false; this.serviceUrl = options.serviceUrl; this.isLocal = false; this.options = { autoSubmit: false, minChars: 1, maxHeight: 300, deferRequestBy: 0, width: 0, highlight: true, params: {}, fnFormatResult: fnFormatResult, delimiter: null, zIndex: 9999 }; this.initialize(); this.setOptions(options) } $.fn.autocomplete = function(options) { return new Autocomplete(this.get(0), options) }; Autocomplete.prototype = { killerFn: null, initialize: function() { var me, uid, autocompleteElId; me = this; uid = new Date().getTime(); autocompleteElId = 'Autocomplete_' + uid; this.killerFn = function(e) { if ($(e.target).parents('.autocomplete').size() === 0) { me.killSuggestions(); me.disableKillerFn() } }; if (!this.options.width) { this.options.width = this.el.width() } this.mainContainerId = 'AutocompleteContainter_' + uid; $('<div id="' + this.mainContainerId + '" style="position:absolute;z-index:9999;"><div class="autocomplete-w1"><div class="autocomplete" id="' + autocompleteElId + '" style="display:none; width:300px;"></div></div></div>').appendTo('body'); this.container = $('#' + autocompleteElId); this.fixPosition(); if (window.opera) { this.el.keypress(function(e) { me.onKeyPress(e) }) } else { this.el.keydown(function(e) { me.onKeyPress(e) }) } this.el.keyup(function(e) { me.onKeyUp(e) }); this.el.blur(function() { me.enableKillerFn() }); this.el.focus(function() { me.fixPosition() }) }, setOptions: function(options) { var o = this.options; $.extend(o, options); if (o.lookup) { this.isLocal = true; if ($.isArray(o.lookup)) { o.lookup = { suggestions: o.lookup, data: []} } } $('#' + this.mainContainerId).css({ zIndex: o.zIndex }); this.container.css({ maxHeight: o.maxHeight + 'px', width: o.width }) }, clearCache: function() { this.cachedResponse = []; this.badQueries = [] }, disable: function() { this.disabled = true }, enable: function() { this.disabled = false }, fixPosition: function() { var offset = this.el.offset(); $('#' + this.mainContainerId).css({ top: (offset.top + this.el.innerHeight()) + 'px', left: offset.left + 'px' }) }, enableKillerFn: function() { var me = this; $(document).bind('click', me.killerFn) }, disableKillerFn: function() { var me = this; $(document).unbind('click', me.killerFn) }, killSuggestions: function() { var me = this; this.stopKillSuggestions(); this.intervalId = window.setInterval(function() { me.hide(); me.stopKillSuggestions() }, 300) }, stopKillSuggestions: function() { window.clearInterval(this.intervalId) }, onKeyPress: function(e) { if (this.disabled || !this.enabled) { return } switch (e.keyCode) { case 27: this.el.val(this.currentValue); this.hide(); break; case 9: case 13: if (this.selectedIndex === -1) { this.hide(); return } this.select(this.selectedIndex); if (e.keyCode === 9) { return } break; case 38: this.moveUp(); break; case 40: this.moveDown(); break; default: return } e.stopImmediatePropagation(); e.preventDefault() }, onKeyUp: function(e) { if (this.disabled) { return } switch (e.keyCode) { case 38: case 40: return } clearInterval(this.onChangeInterval); if (this.currentValue !== this.el.val()) { if (this.options.deferRequestBy > 0) { var me = this; this.onChangeInterval = setInterval(function() { me.onValueChange() }, this.options.deferRequestBy) } else { this.onValueChange() } } }, onValueChange: function() { clearInterval(this.onChangeInterval); this.currentValue = this.el.val(); var q = this.getQuery(this.currentValue); this.selectedIndex = -1; if (this.ignoreValueChange) { this.ignoreValueChange = false; return } if (q === '' || q.length < this.options.minChars) { this.hide() } else { this.getSuggestions(q) } }, getQuery: function(val) { var d, arr; d = this.options.delimiter; if (!d) { return $.trim(val) } arr = val.split(d); return $.trim(arr[arr.length - 1]) }, getSuggestionsLocal: function(q) { var ret, arr, len, val, i; arr = this.options.lookup; len = arr.suggestions.length; ret = { suggestions: [], data: [] }; q = q.toLowerCase(); for (i = 0; i < len; i++) { val = arr.suggestions[i]; if (val.toLowerCase().indexOf(q) === 0) { ret.suggestions.push(val); ret.data.push(arr.data[i]) } } return ret }, getSuggestions: function(q) { var cr, me; cr = this.isLocal ? this.getSuggestionsLocal(q) : this.cachedResponse[q]; if (cr && $.isArray(cr.suggestions)) { this.suggestions = cr.suggestions; this.data = cr.data; this.suggest() } else if (!this.isBadQuery(q)) { me = this; me.options.params.query = q; $.get(this.serviceUrl, me.options.params, function(txt) { me.processResponse(txt) }, 'text') } }, isBadQuery: function(q) { var i = this.badQueries.length; while (i--) { if (q.indexOf(this.badQueries[i]) === 0) { return true } } return false }, hide: function() { this.enabled = false; this.selectedIndex = -1; this.container.hide() }, suggest: function() { if (this.suggestions.length === 0) { this.hide(); return } var me, len, div, f, v, i, s, mOver, mClick; me = this; len = this.suggestions.length; f = this.options.fnFormatResult; v = this.getQuery(this.currentValue); mOver = function(xi) { return function() { me.activate(xi) } }; mClick = function(xi) { return function() { me.select(xi) } }; this.container.hide().empty(); for (i = 0; i < len; i++) { s = this.suggestions[i]; div = $((me.selectedIndex === i ? '<div class="selected"' : '<div') + ' title="' + s + '">' + f(s, this.data[i], v) + '</div>'); div.mouseover(mOver(i)); div.click(mClick(i)); this.container.append(div) } this.enabled = true; this.container.show() }, processResponse: function(text) { var response; try { response = eval('(' + text + ')') } catch (err) { return } if (!$.isArray(response.data)) { response.data = [] } this.cachedResponse[response.query] = response; if (response.suggestions.length === 0) { this.badQueries.push(response.query) } if (response.query === this.getQuery(this.currentValue)) { this.suggestions = response.suggestions; this.data = response.data; this.suggest() } }, activate: function(index) { var divs, activeItem; divs = this.container.children(); if (this.selectedIndex !== -1 && divs.length > this.selectedIndex) { $(divs.get(this.selectedIndex)).attr('class', '') } this.selectedIndex = index; if (this.selectedIndex !== -1 && divs.length > this.selectedIndex) { activeItem = divs.get(this.selectedIndex); $(activeItem).attr('class', 'selected') } return activeItem }, deactivate: function(div, index) { div.className = ''; if (this.selectedIndex === index) { this.selectedIndex = -1 } }, select: function(i) { var selectedValue, f; selectedValue = this.suggestions[i]; if (selectedValue) { this.el.val(selectedValue); if (this.options.autoSubmit) { f = this.el.parents('form'); if (f.length > 0) { f.get(0).submit() } } this.ignoreValueChange = true; this.hide(); this.onSelect(i) } }, moveUp: function() { if (this.selectedIndex === -1) { return } if (this.selectedIndex === 0) { this.container.children().get(0).className = ''; this.selectedIndex = -1; this.el.val(this.currentValue); return } this.adjustScroll(this.selectedIndex - 1) }, moveDown: function() { if (this.selectedIndex === (this.suggestions.length - 1)) { return } this.adjustScroll(this.selectedIndex + 1) }, adjustScroll: function(i) { var activeItem, offsetTop, upperBound, lowerBound; activeItem = this.activate(i); offsetTop = activeItem.offsetTop; upperBound = this.container.scrollTop(); lowerBound = upperBound + this.options.maxHeight - 25; if (offsetTop < upperBound) { this.container.scrollTop(offsetTop) } else if (offsetTop > lowerBound) { this.container.scrollTop(offsetTop - this.options.maxHeight + 25) } }, onSelect: function(i) { var me, onSelect, getValue, s, d; me = this; onSelect = me.options.onSelect; getValue = function(value) { var del, currVal, arr; del = me.options.delimiter; if (!del) { return value } currVal = me.currentValue; arr = currVal.split(del); if (arr.length === 1) { return value } return currVal.substr(0, currVal.length - arr[arr.length - 1].length) + value }; s = me.suggestions[i]; d = me.data[i]; me.el.val(getValue(s)); if ($.isFunction(onSelect)) { onSelect(s, d) } } } } (jQuery));