@aplus-frontend/antdv
Version:
Vue basic component library maintained based on ant-design-vue
47 lines (46 loc) • 1.39 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.findExpandedKeys = findExpandedKeys;
exports.getExpandRange = getExpandRange;
function findExpandedKeys() {
let prev = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
let next = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
const prevLen = prev.length;
const nextLen = next.length;
if (Math.abs(prevLen - nextLen) !== 1) {
return {
add: false,
key: null
};
}
function find(shorter, longer) {
const cache = new Map();
shorter.forEach(key => {
cache.set(key, true);
});
const keys = longer.filter(key => !cache.has(key));
return keys.length === 1 ? keys[0] : null;
}
if (prevLen < nextLen) {
return {
add: true,
key: find(prev, next)
};
}
return {
add: false,
key: find(next, prev)
};
}
function getExpandRange(shorter, longer, key) {
const shorterStartIndex = shorter.findIndex(item => item.key === key);
const shorterEndNode = shorter[shorterStartIndex + 1];
const longerStartIndex = longer.findIndex(item => item.key === key);
if (shorterEndNode) {
const longerEndIndex = longer.findIndex(item => item.key === shorterEndNode.key);
return longer.slice(longerStartIndex + 1, longerEndIndex);
}
return longer.slice(longerStartIndex + 1);
}