forked from firefox-devtools/debugger
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathevents.js
More file actions
118 lines (99 loc) · 2.71 KB
/
events.js
File metadata and controls
118 lines (99 loc) · 2.71 KB
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
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
import type {
SourcePacket,
ResumedPacket,
PausedPacket,
ThreadClient,
Actions,
TabTarget
} from "./types";
import { createPause, prepareSourcePayload } from "./create";
import sourceQueue from "../../utils/source-queue";
const CALL_STACK_PAGE_SIZE = 1000;
type Dependencies = {
threadClient: ThreadClient,
tabTarget: TabTarget,
actions: Actions
};
let actions: Actions;
let isInterrupted: boolean;
function addThreadEventListeners(client: ThreadClient) {
Object.keys(clientEvents).forEach(eventName => {
client.addListener(eventName, clientEvents[eventName].bind(null, client));
});
}
function setupEvents(dependencies: Dependencies) {
const threadClient = dependencies.threadClient;
const tabTarget = dependencies.tabTarget;
actions = dependencies.actions;
sourceQueue.initialize(actions);
addThreadEventListeners(threadClient);
tabTarget.on("workerListChanged", workerListChanged);
}
async function paused(
threadClient: ThreadClient,
_: "paused",
packet: PausedPacket
) {
// If paused by an explicit interrupt, which are generated by the
// slow script dialog and internal events such as setting
// breakpoints, ignore the event.
const { why } = packet;
if (why.type === "interrupted" && !packet.why.onNext) {
isInterrupted = true;
return;
}
let response;
try {
// Eagerly fetch the frames
response = await threadClient.getFrames(0, CALL_STACK_PAGE_SIZE);
} catch (e) {
console.log(e);
return;
}
// NOTE: this happens if we fetch frames and then immediately navigate
if (!response.hasOwnProperty("frames")) {
return;
}
if (why.type != "alreadyPaused") {
const pause = createPause(threadClient.actor, packet, response);
await sourceQueue.flush();
actions.paused(pause);
}
}
function resumed(
threadClient: ThreadClient,
_: "resumed",
packet: ResumedPacket
) {
// NOTE: the client suppresses resumed events while interrupted
// to prevent unintentional behavior.
// see [client docs](../README.md#interrupted) for more information.
if (isInterrupted) {
isInterrupted = false;
return;
}
actions.resumed(packet);
}
function newSource(
threadClient: ThreadClient,
_: "newSource",
{ source }: SourcePacket
) {
sourceQueue.queue({
type: "generated",
data: prepareSourcePayload(threadClient, source)
});
}
function workerListChanged() {
actions.updateWorkers();
}
const clientEvents = {
paused,
resumed,
newSource
};
export { setupEvents, clientEvents, addThreadEventListeners };