import { ArrayDataSource } from '@angular/cdk/collections';
import { FlatTreeControl } from '@angular/cdk/tree';
import { ElementRef, EventEmitter, OnChanges, QueryList, SimpleChanges, TemplateRef } from '@angular/core';
import { ColumnPickerGroupItem } from './interfaces/column-picker-group-item.interface';
import { ColumnPickerTreeNode } from './interfaces/column-picker-tree-node.interface';
import * as i0 from "@angular/core";
export declare class ColumnPickerComponent implements OnChanges {
    private readonly _columnPicker;
    /** Access the LiveAnnounce to provide accessibility on reordering */
    private readonly _liveAnnouncer;
    /** We are using OnPush change detection so we must manually trigger CD */
    private readonly _changeDetectorRef;
    /** Sets the id of the column picker. */
    id: string;
    /** Define a list of all selected columns. */
    selected: ReadonlyArray<string | ColumnPickerGroupItem>;
    /** Define a list of columns that are always selected. The columns cannot be moved or reordered. */
    locked: ReadonlyArray<string>;
    /** Define a list of columns that are not selected or locked. All columns must have unique names, including columns in different groups. */
    deselected: ReadonlyArray<string | ColumnPickerGroupItem>;
    /** Define a custom selected title template. */
    selectedTitleTemplate: TemplateRef<void>;
    /** Define a custom deselected title template. */
    deselectedTitleTemplate: TemplateRef<void>;
    /** Define a custom template for deselected items. */
    deselectedTemplate: TemplateRef<string>;
    /** Define a custom template for selected items. */
    selectedTemplate: TemplateRef<string>;
    /** Define a custom template for locked items. */
    lockedTemplate: TemplateRef<string>;
    /** Define a custom template for the action buttons columns. */
    actionsTemplate: TemplateRef<ColumnPickerActionsContext>;
    /** Define a function to get the aria label of reorderable items in the selected column. */
    selectedAriaLabel: (column: string | ColumnPickerGroupItem, index: number) => string;
    /** Define a function to get the aria label of a group in the deselected list. */
    deselectedGroupAriaLabel: (column: string | ColumnPickerGroupItem, isExpanded: boolean) => string;
    /** Define a function that returns a column move announcement. */
    columnMovedAnnouncement: (column: string | ColumnPickerGroupItem, delta: number) => string;
    /** Define settings for the grouped deselected items. */
    set groups(groups: ColumnPickerGroup[]);
    get groups(): ColumnPickerGroup[];
    /** Define a comparator function used for sorting the deselected columns. */
    sort: (a: ColumnPickerGroupItem, b: ColumnPickerGroupItem) => number;
    /** Define the aria label for the add column button */
    addColumnAriaLabel: string;
    /** Define the aria label for the remove column button */
    removeColumnAriaLabel: string;
    /** Define the aria label for the add all column button */
    addAllColumnsAriaLabel: string;
    /** Define the aria label for the remove all column button */
    removeAllColumnsAriaLabel: string;
    /** Emits when the selected items change or the order of the selected items change. */
    selectedChange: EventEmitter<readonly (string | ColumnPickerGroupItem)[]>;
    /** Emits when the deselected items change. */
    deselectedChange: EventEmitter<readonly (string | ColumnPickerGroupItem)[]>;
    /** The Nested tree control used for the deselect tree */
    _treeControl: FlatTreeControl<ColumnPickerTreeNode>;
    /** A tree-friendly representation of the deselected data */
    _treeData: ColumnPickerTreeNode[];
    /** Data source observable bound to the tree control */
    _treeDataSource: ArrayDataSource<ColumnPickerTreeNode>;
    /** The remaining selectable columns in the deselected list */
    _availableDeselectedColumns: number;
    /** An array of items that are currently selected in the left column. */
    _deselectedSelection: ReadonlyArray<string | ColumnPickerGroupItem>;
    /** An array of items that are currently selected in the right column. */
    _selectedSelection: ReadonlyArray<string | ColumnPickerGroupItem>;
    /** Cache selection during reordering */
    private _selection;
    /** Shallow copy of selection for reordering directive */
    _storedSelection: Array<string | ColumnPickerGroupItem>;
    /** Get the elements for the selected items */
    selectedElements: QueryList<ElementRef>;
    ngOnChanges(changes: SimpleChanges): void;
    /** Parse data into suitable format for the FlatTreeComponent to understand and initialize deselect tree */
    private rebuildDeselectTree;
    /** A function that can be called to add columns. If no columns are passed to the function, the items that are selected in the left column will be added. */
    addColumns(columns?: ReadonlyArray<string | ColumnPickerGroupItem>): void;
    /** A function that can be called to remove columns. If no columns are passed to the function, the items that are selected in the right column will be removed. */
    removeColumns(columns?: ReadonlyArray<string | ColumnPickerGroupItem>): void;
    /** A function that can be called to add all columns. */
    addAllColumns(): void;
    /** A function that can be called to remove all columns. */
    removeAllColumns(): void;
    /** Ensure we don't select while dragging */
    storeSelection(): void;
    /** Restore the selection once dragging ends */
    restoreSelection(): void;
    /** Update when reordering has occurred */
    onReorder(): void;
    /** Get an aria label for deselected list groups */
    private getDefaultDeselectedGroupAriaLabel;
    /** Get an aria label for reorderable items */
    private getDefaultSelectedAriaLabel;
    /** Get the announcement to read when a selected column is moved */
    getColumnMovedAnnouncement(column: string, delta: number): string;
    /** Perform a reorder with the keyboard */
    move(column: string | ColumnPickerGroupItem, delta: number): void;
    /** Provide a trackBy function for the reorderable options */
    selectedTrackBy(index: number, column: string | ColumnPickerGroupItem): string;
    /** Swap two elements in the selected columns array */
    private swap;
    /** Get the column name based on type */
    _getColumnName(item: string | ColumnPickerGroupItem): string;
    /** Check if tree group has visible children */
    _nodeHasChildren(_: number, node: ColumnPickerTreeNode): boolean;
    _nodeHasAvailableChildren(node: ColumnPickerTreeNode): boolean;
    /** Check to see if current item should display in deselect tree */
    _shouldRenderNode(node: ColumnPickerTreeNode): boolean;
    /** Work backwards from the index of the current node to find the parent node  */
    private getTreeParent;
    /** Store the current count of nodes that are available for selection from the deselected list */
    private updateAvailableDeselectedColumns;
    /** Update the order of the items when reordering has changed */
    onReorderChange(model: string[]): void;
    /** Get the action context, ensuring that functions have a pre-bound context */
    _getActionContext(): ColumnPickerActionsContext;
    /** Change the expanded state of a node */
    _setNodeExpanded(node: ColumnPickerTreeNode, isExpanded: boolean): void;
    protected _isNodeSelected(name: any): boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<ColumnPickerComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<ColumnPickerComponent, "ux-column-picker", never, { "id": { "alias": "id"; "required": false; }; "selected": { "alias": "selected"; "required": false; }; "locked": { "alias": "locked"; "required": false; }; "deselected": { "alias": "deselected"; "required": false; }; "selectedTitleTemplate": { "alias": "selectedTitleTemplate"; "required": false; }; "deselectedTitleTemplate": { "alias": "deselectedTitleTemplate"; "required": false; }; "deselectedTemplate": { "alias": "deselectedTemplate"; "required": false; }; "selectedTemplate": { "alias": "selectedTemplate"; "required": false; }; "lockedTemplate": { "alias": "lockedTemplate"; "required": false; }; "actionsTemplate": { "alias": "actionsTemplate"; "required": false; }; "selectedAriaLabel": { "alias": "selectedAriaLabel"; "required": false; }; "deselectedGroupAriaLabel": { "alias": "deselectedGroupAriaLabel"; "required": false; }; "columnMovedAnnouncement": { "alias": "columnMovedAnnouncement"; "required": false; }; "groups": { "alias": "groups"; "required": false; }; "sort": { "alias": "sort"; "required": false; }; "addColumnAriaLabel": { "alias": "addColumnAriaLabel"; "required": false; }; "removeColumnAriaLabel": { "alias": "removeColumnAriaLabel"; "required": false; }; "addAllColumnsAriaLabel": { "alias": "addAllColumnsAriaLabel"; "required": false; }; "removeAllColumnsAriaLabel": { "alias": "removeAllColumnsAriaLabel"; "required": false; }; }, { "selectedChange": "selectedChange"; "deselectedChange": "deselectedChange"; }, never, never, false, never>;
}
/** Define a context for the column actions template */
export interface ColumnPickerActionsContext {
    /** An array of items that are currently selected in the left column. */
    addSelection: ReadonlyArray<string | ColumnPickerGroupItem>;
    /** An array of items that are currently selected in the right column. */
    removeSelection: ReadonlyArray<string | ColumnPickerGroupItem>;
    /** A function that can be called to add columns. If no columns are passed to the function, the items that are selected in the left column will be added. */
    addColumns(columns?: ReadonlyArray<string | ColumnPickerGroupItem>): void;
    /** A function that can be called to remove columns. If no columns are passed to the function, the items that are selected in the right column will be removed. */
    removeColumns(columns?: ReadonlyArray<string | ColumnPickerGroupItem>): void;
    /** A function that can be called to add all columns. */
    addAllColumns(): void;
    /** A function that can be called to remove all columns. */
    removeAllColumns(): void;
}
/** An interface representing settings of groups defined in ColumnPickerGroupItem objects */
export interface ColumnPickerGroup {
    /**  The name of the group this setting object is related to. */
    name: string;
    /**  Defines if this group will be expanded on load. This is an optional property. */
    expanded?: boolean;
}