44 lines
1.2 KiB
Plaintext
44 lines
1.2 KiB
Plaintext
import Attributor from './attributor.js';
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function match(node: HTMLElement, prefix: string): string[] {
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const className = node.getAttribute('class') || '';
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return className
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.split(/\s+/)
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.filter((name) => name.indexOf(`${prefix}-`) === 0);
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}
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class ClassAttributor extends Attributor {
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public static keys(node: HTMLElement): string[] {
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return (node.getAttribute('class') || '')
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.split(/\s+/)
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.map((name) => name.split('-').slice(0, -1).join('-'));
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}
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public add(node: HTMLElement, value: any): boolean {
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if (!this.canAdd(node, value)) {
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return false;
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}
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this.remove(node);
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node.classList.add(`${this.keyName}-${value}`);
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return true;
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}
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public remove(node: HTMLElement): void {
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const matches = match(node, this.keyName);
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matches.forEach((name) => {
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node.classList.remove(name);
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});
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if (node.classList.length === 0) {
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node.removeAttribute('class');
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}
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}
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public value(node: HTMLElement): any {
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const result = match(node, this.keyName)[0] || '';
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const value = result.slice(this.keyName.length + 1); // +1 for hyphen
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return this.canAdd(node, value) ? value : '';
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}
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}
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export default ClassAttributor;
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