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49 lines
1.6 KiB
49 lines
1.6 KiB
2 months ago
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/*
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* Copyright 2022 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const getName = (node) => {
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const name = node.nodeName;
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return node.nodeType === 1
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? name.toLowerCase()
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: name.toUpperCase().replace(/^#/, '');
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};
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export const getSelector = (node, maxLen) => {
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let sel = '';
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try {
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while (node && node.nodeType !== 9) {
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const el = node;
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const part = el.id
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? '#' + el.id
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: getName(el) +
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(el.classList &&
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el.classList.value &&
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el.classList.value.trim() &&
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el.classList.value.trim().length
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? '.' + el.classList.value.trim().replace(/\s+/g, '.')
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: '');
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if (sel.length + part.length > (maxLen || 100) - 1)
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return sel || part;
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sel = sel ? part + '>' + sel : part;
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if (el.id)
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break;
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node = el.parentNode;
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}
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}
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catch (err) {
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// Do nothing...
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}
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return sel;
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};
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