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
|
/**
* Copyright 2023 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type {CustomQueryHandler} from '../common/CustomQueryHandler.js';
import type {Awaitable, AwaitableIterable} from '../common/types.js';
export interface CustomQuerySelector {
querySelector(root: Node, selector: string): Awaitable<Node | null>;
querySelectorAll(root: Node, selector: string): AwaitableIterable<Node>;
}
/**
* This class mimics the injected {@link CustomQuerySelectorRegistry}.
*/
class CustomQuerySelectorRegistry {
#selectors = new Map<string, CustomQuerySelector>();
register(name: string, handler: CustomQueryHandler): void {
if (!handler.queryOne && handler.queryAll) {
const querySelectorAll = handler.queryAll;
handler.queryOne = (node, selector) => {
for (const result of querySelectorAll(node, selector)) {
return result;
}
return null;
};
} else if (handler.queryOne && !handler.queryAll) {
const querySelector = handler.queryOne;
handler.queryAll = (node, selector) => {
const result = querySelector(node, selector);
return result ? [result] : [];
};
} else if (!handler.queryOne || !handler.queryAll) {
throw new Error('At least one query method must be defined.');
}
this.#selectors.set(name, {
querySelector: handler.queryOne,
querySelectorAll: handler.queryAll!,
});
}
unregister(name: string): void {
this.#selectors.delete(name);
}
get(name: string): CustomQuerySelector | undefined {
return this.#selectors.get(name);
}
clear() {
this.#selectors.clear();
}
}
export const customQuerySelectors = new CustomQuerySelectorRegistry();
|
