@progress/kendo-angular-dropdowns
Version:
A wide variety of native Angular dropdown components including AutoComplete, ComboBox, DropDownList, DropDownTree, MultiColumnComboBox, MultiSelect, and MultiSelectTree
83 lines (82 loc) • 2.69 kB
JavaScript
/**-----------------------------------------------------------------------------------------
* Copyright © 2025 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { Injectable } from '@angular/core';
import { isPresent, valueFrom } from '../../common/util';
import * as i0 from "@angular/core";
/**
* @hidden
*/
export const nodeIndex = (item) => (item || {}).key;
/**
* @hidden
*/
export const buildTreeIndex = (parentIndex, itemIndex) => {
return [parentIndex, itemIndex].filter(part => isPresent(part)).join('_');
};
/**
* @hidden
*/
export const buildTreeItem = (dataItem, valueField, currentLevelIndex) => {
if (!isPresent(dataItem)) {
return null;
}
return {
dataItem,
key: valueFrom({ dataItem, level: currentLevelIndex }, valueField) + '_' + currentLevelIndex
};
};
/**
* @hidden
*/
export class MultiSelectTreeLookupService {
map = new Map();
reset() {
this.map.clear();
}
registerChildren(index, children) {
const item = this.item(index);
if (!item) {
return;
}
item.children = children;
}
item(index) {
return this.map.get(index) || null;
}
registerItem(item, parent) {
const currentLookup = {
children: [],
item,
parent: this.item(nodeIndex(parent))
};
this.map.set(item.key, currentLookup);
}
itemLookup(index) {
const item = this.item(index);
if (!item) {
return null;
}
return {
children: this.mapChildren(item.children),
item: item.item,
parent: item.parent
};
}
mapChildren(children = []) {
return children.map(c => {
const { item, parent, children } = this.item(c.key);
return {
children: this.mapChildren(children),
item,
parent
};
});
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: MultiSelectTreeLookupService, deps: [], target: i0.ɵɵFactoryTarget.Injectable });
static ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: MultiSelectTreeLookupService });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: MultiSelectTreeLookupService, decorators: [{
type: Injectable
}] });