107 lines
3.2 KiB
JavaScript
107 lines
3.2 KiB
JavaScript
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/**
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* jQuery plugin for an instant searching.
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*
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* @author Oleg Voronkovich <oleg-voronkovich@yandex.ru>
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* @author Yonel Ceruto <yonelceruto@gmail.com>
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*/
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(function ($) {
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'use strict';
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String.prototype.render = function (parameters) {
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return this.replace(/({{ (\w+) }})/g, function (match, pattern, name) {
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return parameters[name];
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})
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};
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// INSTANTS SEARCH PUBLIC CLASS DEFINITION
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// =======================================
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var InstantSearch = function (element, options) {
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this.$input = $(element);
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this.$form = this.$input.closest('form');
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this.$preview = $('<ul class="search-preview list-group">').appendTo(this.$form);
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this.options = $.extend({}, InstantSearch.DEFAULTS, this.$input.data(), options);
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this.$input.keyup(this.debounce());
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};
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InstantSearch.DEFAULTS = {
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minQueryLength: 2,
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limit: 10,
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delay: 500,
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noResultsMessage: 'No results found',
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itemTemplate: '\
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<article class="post">\
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<h2><a href="{{ url }}">{{ title }}</a></h2>\
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<p class="post-metadata">\
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<span class="metadata"><i class="fa fa-calendar"></i> {{ date }}</span>\
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<span class="metadata"><i class="fa fa-user"></i> {{ author }}</span>\
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</p>\
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<p>{{ summary }}</p>\
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</article>'
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};
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InstantSearch.prototype.debounce = function () {
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var delay = this.options.delay;
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var search = this.search;
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var timer = null;
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var self = this;
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return function () {
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clearTimeout(timer);
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timer = setTimeout(function () {
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search.apply(self);
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}, delay);
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};
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};
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InstantSearch.prototype.search = function () {
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var query = $.trim(this.$input.val()).replace(/\s{2,}/g, ' ');
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if (query.length < this.options.minQueryLength) {
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this.$preview.empty();
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return;
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}
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var self = this;
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var data = this.$form.serializeArray();
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data['l'] = this.limit;
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$.getJSON(this.$form.attr('action'), data, function (items) {
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self.show(items);
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});
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};
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InstantSearch.prototype.show = function (items) {
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var $preview = this.$preview;
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var itemTemplate = this.options.itemTemplate;
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if (0 === items.length) {
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$preview.html(this.options.noResultsMessage);
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} else {
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$preview.empty();
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$.each(items, function (index, item) {
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$preview.append(itemTemplate.render(item));
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});
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}
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};
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// INSTANTS SEARCH PLUGIN DEFINITION
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// =================================
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function Plugin(option) {
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return this.each(function () {
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var $this = $(this);
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var instance = $this.data('instantSearch');
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var options = typeof option === 'object' && option;
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if (!instance) $this.data('instantSearch', (instance = new InstantSearch(this, options)));
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if (option === 'search') instance.search();
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})
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}
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$.fn.instantSearch = Plugin;
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$.fn.instantSearch.Constructor = InstantSearch;
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})(window.jQuery);
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