@wordpress/core-data/build-module/locks/selectors.js

Access to and manipulation of core WordPress entities.

/**
 * Internal dependencies
 */
import { iterateDescendants, iteratePath, hasConflictingLock, getNode } from './utils';
export function getPendingLockRequests(state) {
  return state.requests;
}
export function isLockAvailable(state, store, path, {
  exclusive
}) {
  const storePath = [store, ...path];
  const locks = state.tree;

  // Validate all parents and the node itself
  for (const node of iteratePath(locks, storePath)) {
    if (hasConflictingLock({
      exclusive
    }, node.locks)) {
      return false;
    }
  }

  // iteratePath terminates early if path is unreachable, let's
  // re-fetch the node and check it exists in the tree.
  const node = getNode(locks, storePath);
  if (!node) {
    return true;
  }

  // Validate all nested nodes
  for (const descendant of iterateDescendants(node)) {
    if (hasConflictingLock({
      exclusive
    }, descendant.locks)) {
      return false;
    }
  }
  return true;
}
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