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23201ab1c4
accessibility of the search box. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44217 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
109 lines
2.9 KiB
JavaScript
109 lines
2.9 KiB
JavaScript
Search = function(data, input, result) {
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this.data = data;
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this.$input = $(input);
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this.$result = $(result);
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this.$current = null;
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this.$view = this.$result.parent();
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this.searcher = new Searcher(data.index);
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this.init();
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}
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Search.prototype = $.extend({}, Navigation, new function() {
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var suid = 1;
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this.init = function() {
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var _this = this;
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var observer = function(e) {
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switch(e.originalEvent.keyCode) {
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case 38: // Event.KEY_UP
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case 40: // Event.KEY_DOWN
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return;
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}
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_this.search(_this.$input[0].value);
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};
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this.$input.keyup(observer);
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this.$input.click(observer); // mac's clear field
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this.searcher.ready(function(results, isLast) {
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_this.addResults(results, isLast);
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})
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this.initNavigation();
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this.setNavigationActive(false);
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}
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this.search = function(value, selectFirstMatch) {
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value = jQuery.trim(value).toLowerCase();
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if (value) {
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this.setNavigationActive(true);
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} else {
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this.setNavigationActive(false);
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}
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if (value == '') {
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this.lastQuery = value;
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this.$result.empty();
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this.$result.attr('aria-expanded', 'false');
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this.setNavigationActive(false);
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} else if (value != this.lastQuery) {
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this.lastQuery = value;
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this.$result.attr('aria-busy', 'true');
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this.$result.attr('aria-expanded', 'true');
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this.firstRun = true;
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this.searcher.find(value);
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}
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}
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this.addResults = function(results, isLast) {
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var target = this.$result.get(0);
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if (this.firstRun && (results.length > 0 || isLast)) {
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this.$current = null;
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this.$result.empty();
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}
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for (var i=0, l = results.length; i < l; i++) {
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var item = this.renderItem.call(this, results[i]);
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item.setAttribute('id', 'search-result-' + target.childElementCount);
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target.appendChild(item);
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};
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if (this.firstRun && results.length > 0) {
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this.firstRun = false;
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this.$current = $(target.firstChild);
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this.$current.addClass('search-selected');
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}
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if (jQuery.browser.msie) this.$element[0].className += '';
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if (isLast) this.$result.attr('aria-busy', 'false');
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}
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this.move = function(isDown) {
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if (!this.$current) return;
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var $next = this.$current[isDown ? 'next' : 'prev']();
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if ($next.length) {
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this.$current.removeClass('search-selected');
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$next.addClass('search-selected');
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this.$input.attr('aria-activedescendant', $next.attr('id'));
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this.scrollIntoView($next[0], this.$view[0]);
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this.$current = $next;
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this.$input.val($next[0].firstChild.firstChild.text);
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this.$input.select();
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}
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return true;
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}
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this.hlt = function(html) {
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return this.escapeHTML(html).
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replace(/\u0001/g, '<em>').
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replace(/\u0002/g, '</em>');
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}
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this.escapeHTML = function(html) {
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return html.replace(/[&<>]/g, function(c) {
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return '&#' + c.charCodeAt(0) + ';';
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});
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}
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});
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