import { type TemplateRef } from '@angular/core';
import { type TuiContext } from '@taiga-ui/cdk/types';
import { type Observable } from 'rxjs';
import { type TuiTreeItem } from '../components/tree-item/tree-item.component';
export interface TuiTreeItemContext extends TuiContext<TuiTreeItem> {
    readonly template: TemplateRef<Record<string, unknown>>;
}
export interface TuiTreeContext<T> extends TuiContext<T> {
    readonly node: TuiTreeItem;
}
export interface TuiTreeController {
    isExpanded(item: TuiTreeItem): boolean;
    toggle(item: TuiTreeItem): void;
}
export interface TuiTreeAccessor<T> {
    register(item: TuiTreeItem, value: T): void;
    unregister(item: TuiTreeItem): void;
}
export interface TuiTreeLoader<T> {
    hasChildren(item: T): boolean;
    loadChildren(item: T): Observable<T[]>;
}