ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
39 lines • 4.46 kB
JavaScript
/**
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
*/
export const getParent = (nodes, node, getLevel) => {
let index = nodes.indexOf(node);
if (index < 0) {
return null;
}
const level = getLevel(node);
for (index--; index >= 0; index--) {
const preLevel = getLevel(nodes[index]);
if (preLevel + 1 === level) {
return nodes[index];
}
if (preLevel + 1 < level) {
return null;
}
}
return null;
};
export const getNextSibling = (nodes, node, getLevel, _index) => {
let index = typeof _index !== 'undefined' ? _index : nodes.indexOf(node);
if (index < 0) {
return null;
}
const level = getLevel(node);
for (index++; index < nodes.length; index++) {
const nextLevel = getLevel(nodes[index]);
if (nextLevel < level) {
return null;
}
if (nextLevel === level) {
return nodes[index];
}
}
return null;
};
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