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
|
/*
* Copyright (C) 2022 Kristóf Marussy <kristof@marussy.com>
*
* This file is part of Sophie.
*
* Sophie is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: AGPL-3.0-only
*/
import type { SharedStoreSnapshotOut } from '@sophie/shared';
import {
addMiddleware,
getSnapshot,
type IJsonPatch,
onPatch,
} from 'mobx-state-tree';
import type MainStore from '../../stores/MainStore.js';
import Disposer from '../../utils/Disposer.js';
export type PatchListener = (patch: IJsonPatch[]) => void;
export default class RendererBridge {
snapshot: SharedStoreSnapshotOut;
private readonly disposeOnPatch: Disposer;
private readonly disposeMiddleware: Disposer;
constructor(store: MainStore, listener: PatchListener) {
this.snapshot = getSnapshot(store.shared);
// An array of accumulated patches if we're in an action, `undefined` otherwise.
let patches: IJsonPatch[] | undefined;
this.disposeOnPatch = onPatch(store.shared, (patch) => {
if (patches === undefined) {
// Update unprotected stores (outside an action) right away.
try {
listener([patch]);
} finally {
this.snapshot = getSnapshot(store.shared);
}
} else {
patches.push(patch);
}
});
this.disposeMiddleware = addMiddleware(store, (call, next) => {
if (patches !== undefined) {
// We're already in an action, there's no need to enter one.
next(call);
return;
}
patches = [];
try {
next(call);
} finally {
try {
if (patches.length > 0) {
listener(patches);
}
} finally {
patches = undefined;
this.snapshot = getSnapshot(store.shared);
}
}
});
}
dispose(): void {
this.disposeMiddleware();
this.disposeOnPatch();
}
}
|
