@ng-select/ng-select
Version:
Angular ng-select - All in One UI Select, Multiselect and Autocomplete
121 lines (120 loc) • 9.66 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,uselessCode} checked by tsc
*/
/** @typedef {?} */
var SelectionModelFactory;
export { SelectionModelFactory };
/**
* @return {?}
*/
export function DefaultSelectionModelFactory() {
return new DefaultSelectionModel();
}
/**
* @record
*/
export function SelectionModel() { }
/** @type {?} */
SelectionModel.prototype.value;
/** @type {?} */
SelectionModel.prototype.select;
/** @type {?} */
SelectionModel.prototype.unselect;
/** @type {?} */
SelectionModel.prototype.clear;
export class DefaultSelectionModel {
constructor() {
this._selected = [];
}
/**
* @return {?}
*/
get value() {
return this._selected;
}
/**
* @param {?} item
* @param {?} multiple
* @param {?} groupAsModel
* @return {?}
*/
select(item, multiple, groupAsModel) {
item.selected = true;
if (groupAsModel || item.parent) {
this._selected.push(item);
}
if (multiple) {
if (item.parent) {
/** @type {?} */
const childrenCount = item.parent.children.length;
/** @type {?} */
const selectedCount = item.parent.children.filter(x => x.selected).length;
item.parent.selected = childrenCount === selectedCount;
}
else if (item.children) {
this._setChildrenSelectedState(item.children, true);
this._removeChildren(item);
if (!groupAsModel) {
this._selected = [...this._selected, ...item.children];
}
}
}
}
/**
* @param {?} item
* @param {?} multiple
* @return {?}
*/
unselect(item, multiple) {
this._selected = this._selected.filter(x => x !== item);
item.selected = false;
if (multiple) {
if (item.parent && item.parent.selected) {
/** @type {?} */
const children = item.parent.children;
this._removeParent(item.parent);
this._removeChildren(item.parent);
this._selected.push(...children.filter(x => x !== item));
item.parent.selected = false;
}
else if (item.children) {
this._setChildrenSelectedState(item.children, false);
this._removeChildren(item);
}
}
}
/**
* @return {?}
*/
clear() {
this._selected = [];
}
/**
* @param {?} children
* @param {?} selected
* @return {?}
*/
_setChildrenSelectedState(children, selected) {
children.forEach(x => x.selected = selected);
}
/**
* @param {?} parent
* @return {?}
*/
_removeChildren(parent) {
this._selected = this._selected.filter(x => x.parent !== parent);
}
/**
* @param {?} parent
* @return {?}
*/
_removeParent(parent) {
this._selected = this._selected.filter(x => x !== parent);
}
}
if (false) {
/** @type {?} */
DefaultSelectionModel.prototype._selected;
}
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