84 lines
2.0 KiB
JavaScript
84 lines
2.0 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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(function(){
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"use strict";
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let scope;
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if ((typeof exports) !== "undefined"){
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scope = exports;
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}
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else {
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scope = require.register("./search", {});
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}
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const extension = require("./extension");
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const texts = [];
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scope.register = function(text, content){
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texts.push({text: text.toLowerCase(), content});
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};
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scope.search = function(search){
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const resultSets = search.split(/\s+/).filter(function(term){
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return term.trim();
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}).map(function(term){
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const matching = new Set();
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if (term.match(/^:[a-z]+$/i)){
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const tag = term.substring(1);
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texts.forEach(function(text){
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if (text.content.querySelector(`.${tag}`)){
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matching.add(text.content);
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}
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});
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}
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else {
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term = new RegExp(term.toLowerCase());
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texts.forEach(function(text){
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if (term.test(text.text)){
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matching.add(text.content);
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}
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});
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}
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return matching;
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});
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if (resultSets.length){
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return Array.from(
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resultSets.reduce(function(previousSet, set){
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const andSet = new Set();
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set.forEach(function(entry){
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if (previousSet.has(entry)){
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andSet.add(entry);
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}
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});
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return andSet;
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})
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);
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}
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else {
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return [];
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}
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};
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const searchListeners = [];
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scope.init = function(){
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const node = document.createElement("input");
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node.id = "search";
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node.placeholder = extension.getTranslation("search");
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window.setTimeout(() => node.focus(), 1);
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let lastResults = [];
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node.addEventListener("input", function(){
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this.search();
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});
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node.search = function(){
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const search = this.value;
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const results = search? scope.search(search): [];
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searchListeners.forEach(function(callback){
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callback({search, results, lastResults});
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});
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lastResults = results;
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};
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return node;
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};
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scope.on = function(callback){
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searchListeners.push(callback);
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};
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}()); |