45 lines
1.2 KiB
TypeScript
45 lines
1.2 KiB
TypeScript
import Attributor from './attributor';
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function match(node: HTMLElement, prefix: string): string[] {
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let className = node.getAttribute('class') || '';
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return className.split(/\s+/).filter(function(name) {
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return name.indexOf(`${prefix}-`) === 0;
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});
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}
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class ClassAttributor extends Attributor {
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static keys(node: HTMLElement): string[] {
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return (node.getAttribute('class') || '').split(/\s+/).map(function(name) {
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return name
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.split('-')
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.slice(0, -1)
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.join('-');
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});
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}
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add(node: HTMLElement, value: string): boolean {
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if (!this.canAdd(node, value)) return false;
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this.remove(node);
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node.classList.add(`${this.keyName}-${value}`);
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return true;
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}
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remove(node: HTMLElement): void {
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let matches = match(node, this.keyName);
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matches.forEach(function(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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value(node: HTMLElement): string {
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let result = match(node, this.keyName)[0] || '';
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let 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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