-
-
Notifications
You must be signed in to change notification settings - Fork 116
/
background.js
141 lines (125 loc) · 3.94 KB
/
background.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
/* globals OptionsSync */
const optionsStorage = new OptionsSync();
optionsStorage.define({
defaults: {
serverPort: 4001
}
});
function inCurrentTab(callback) {
chrome.tabs.query({
active: true,
currentWindow: true
}, tabs => callback(tabs[0]));
}
function handleClose(info, tab) {
chrome.tabs.executeScript(tab.id, {
code: 'stopGT()'
});
}
async function handleAction({id}) {
const defaults = {
runAt: 'document_start',
allFrames: true
};
const [alreadyInjected] = await browser.tabs.executeScript(id, {
...defaults,
code: 'typeof window.startGT === "function"'
});
console.log(alreadyInjected);
if (alreadyInjected) {
return browser.tabs.executeScript(id, {...defaults, code: 'startGT()'});
}
try {
await Promise.all([
browser.tabs.insertCSS(id, {...defaults, file: '/scripts/ghost-text.css'}),
browser.tabs.insertCSS(id, {...defaults, file: '/vendor/humane-ghosttext.css'}),
browser.tabs.executeScript(id, {...defaults, file: '/vendor/webext-options-sync.js'}),
browser.tabs.executeScript(id, {...defaults, file: '/vendor/humane-ghosttext.js'}),
browser.tabs.executeScript(id, {...defaults, file: '/vendor/one-event.browser.js'}),
browser.tabs.executeScript(id, {...defaults, file: '/scripts/unsafe-messenger.js'}),
browser.tabs.executeScript(id, {...defaults, file: '/scripts/ghost-text.js'})
]);
} catch (error) {
console.error(error);
}
await browser.tabs.executeScript(id, {...defaults, code: 'startGT()'});
}
function handlePortListenerErrors(listener) {
return async port => {
try {
await listener(port);
} catch (error) {
let {message} = error;
if (message === 'Failed to fetch') {
message = 'Unable to connect to the editor. Make sure it’s open, the GhostText extension is running in it, and that the port matches (if you changed it)';
}
port.postMessage({error: message});
}
};
}
chrome.runtime.onConnect.addListener(handlePortListenerErrors(async port => {
console.assert(port.name === 'new-field');
const {serverPort} = await optionsStorage.getAll();
const response = await fetch(`http://localhost:${serverPort}`);
const {ProtocolVersion, WebSocketPort} = await response.json();
if (ProtocolVersion !== 1) {
throw new Error('Incompatible protocol version');
}
console.log('will open socket');
const socket = new WebSocket('ws://localhost:' + WebSocketPort);
const event = await Promise.race([
oneEvent.promise(socket, 'open'),
oneEvent.promise(socket, 'error')
]);
console.log(event);
const onSocketClose = () => port.postMessage({close: true});
socket.addEventListener('close', onSocketClose);
socket.addEventListener('message', event => port.postMessage({message: event.data}));
socket.addEventListener('error', event => console.error('error!', event));
port.onMessage.addListener(message => {
console.log('got message from script', message);
socket.send(message);
});
console.log(port);
port.onDisconnect.addListener(() => {
socket.removeEventListener('close', onSocketClose);
socket.close();
});
port.postMessage({ready: true});
}));
function handleMessages({code, count}, {tab}) {
if (code === 'connection-count') {
let text = '';
if (count === 1) {
text = /os x/i.test(navigator.userAgent) ? '✓' : 'ON';
} else if (count > 1) {
text = String(count);
}
chrome.browserAction.setBadgeText({
text,
tabId: tab.id
});
} else if (code === 'focus-tab') {
chrome.tabs.update(tab.id, {active: true});
chrome.windows.update(tab.windowId, {focused: true});
}
}
function init() {
chrome.browserAction.onClicked.addListener(handleAction);
chrome.runtime.onMessage.addListener(handleMessages);
chrome.contextMenus.create({
id: 'stop-gt',
title: 'Disconnect GhostText on this page',
contexts: ['browser_action'],
onclick: handleClose
});
chrome.commands.onCommand.addListener(command => {
if (command === 'open') {
inCurrentTab(handleAction);
}
});
chrome.browserAction.setBadgeBackgroundColor({
color: '#008040'
});
}
init();