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