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- import { ClassAttributor, Scope } from 'parchment';
- class IndentAttributor extends ClassAttributor {
- add(node, value) {
- if (value === '+1' || value === '-1') {
- const indent = this.value(node) || 0;
- value = value === '+1' ? indent + 1 : indent - 1;
- }
- if (value === 0) {
- this.remove(node);
- return true;
- }
- return super.add(node, value);
- }
- canAdd(node, value) {
- return super.canAdd(node, value) || super.canAdd(node, parseInt(value, 10));
- }
- value(node) {
- return parseInt(super.value(node), 10) || undefined; // Don't return NaN
- }
- }
- const IndentClass = new IndentAttributor('indent', 'ql-indent', {
- scope: Scope.BLOCK,
- whitelist: [1, 2, 3, 4, 5, 6, 7, 8],
- });
- export default IndentClass;
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