Mercurial > addons > firefox-addons > context-web-search

annotate background.js @ 0:2050741e9711

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Initial revision
author Guido Berhoerster <guido+cws@berhoerster.name>
date Tue, 18 Sep 2018 22:57:18 +0200
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children f77dab12bb52
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1 /*
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2 * Copyright (C) 2018 Guido Berhoerster <guido+cws@berhoerster.name>
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3 *
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4 * This Source Code Form is subject to the terms of the Mozilla Public
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5 * License, v. 2.0. If a copy of the MPL was not distributed with this
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6 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
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7 */
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8
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9 'use strict';
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10
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11 function encodeXML(str) {
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12 return str.replace(/[<>&'"]/g, c => {
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13 switch (c) {
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14 case '<': return '&lt;';
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15 case '>': return '&gt;';
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16 case '&': return '&amp;';
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17 case '\'': return '&apos;';
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18 case '"': return '&quot;';
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19 }
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20 });
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21 }
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22
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23 function createFavIcon(name) {
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24 let firstLetter = name.trim().charAt(0);
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25 if (firstLetter === '') {
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26 firstLetter = '?';
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27 }
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28 let svg = `<svg viewBox="0 0 16 16" ` +
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29 `xmlns="http://www.w3.org/2000/svg">` +
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30 `<defs>` +
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31 `<filter id="ds">` +
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32 `<feDropShadow dx="0" dy="0" stdDeviation=".5"/>` +
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33 `</filter>` +
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34 `</defs>` +
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35 `<rect width="16" height="16" rx="3" ry="3" fill="#ed00b5"/>` +
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36 `<text x="8" y="12" alignment-baseline="middle" fill="#fff" ` +
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37 `filter="url(#ds)" font-family="sans-serif" font-size="11px" ` +
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38 `font-weight="bold" text-anchor="middle">` +
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39 `${encodeXML(firstLetter)}</text>` +
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40 `</svg>`;
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41 return `data:image/svg+xml;charset=utf-8,${encodeURIComponent(svg)}`
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42 }
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43
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44 async function createMenu(isSelection) {
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45 let searchEngines = await browser.search.get();
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46 let menuItems = new Set();
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47 for (let engine of searchEngines) {
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48 let favIcon = typeof engine.favIconUrl !== 'undefined' ?
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49 engine.favIconUrl : createFavIcon(engine.name);
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50 let menuItemId = browser.menus.create({
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51 id: engine.name,
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52 title: browser.i18n.getMessage(isSelection ?
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53 'searchSelectionWithEngine' : 'searchLinkWithEngine',
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54 engine.name.trim()),
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55 icons: {16: favIcon},
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56 contexts: ['link', 'selection']
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57 }, async () => {
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58 if (browser.runtime.lastError) {
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59 console.log(`Failed to create menu item:` +
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60 `${browser.runtime.lastError}`);
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61 }
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62
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63 // browser.menus.create does not return a promise that can be
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64 // awaited, thus collect the returned menu item IDs in a set and
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65 // remove them from this callback which is called when the
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66 // asynchronous creation function has finished; when the set is
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67 // empty all creation functions have finished and the menu can be
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68 // refreshed
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69 menuItems.delete(menuItemId);
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70 if (menuItems.size === 0) {
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71 try {
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72 await browser.menus.refresh();
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73 } catch (e) {
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74 console.log(`Failed to refresh menu: ${e.message}`);
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75 }
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76 }
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77 });
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78 menuItems.add(menuItemId);
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79 }
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80 }
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81
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82 browser.menus.onShown.addListener(async (info, tab) => {
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83 try {
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84 await createMenu(info.contexts.includes('selection'));
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85 } catch (e) {
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86 console.log(e);
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87 }
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88 });
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89
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90 browser.menus.onHidden.addListener(async () => {
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91 try {
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92 await browser.menus.removeAll();
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93 } catch (e) {
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94 console.log(`Failed to remove menu items: ${e.message}`);
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95 }
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96 try {
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97 await browser.menus.refresh();
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98 } catch (e) {
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99 console.log(`Failed to refresh menu: ${e.message}`);
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100 }
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101 });
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102
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103 browser.menus.onClicked.addListener(async (info, tab) => {
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104 let query = typeof info.selectionText !== 'undefined' ?
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105 info.selectionText.trim() : info.linkText.trim();
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106 try {
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107 await browser.search.search({
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108 query: query,
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109 engine: info.menuItemId
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110 });
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111 } catch (e) {
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112 console.log(`Failed to search for "${query}": ${e.message}`);
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113 }
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114 });