import { TemplateRef } from '@angular/core';
import { TreeNode, ScrollerOptions, PassThrough, PassThroughOption } from 'primeng/api';
import { CheckboxPassThrough } from 'primeng/types/checkbox';
import { IconFieldPassThrough } from 'primeng/types/iconfield';
import { InputIconPassThrough } from 'primeng/types/inputicon';
import { InputTextPassThrough } from 'primeng/types/inputtext';
import { VirtualScrollerPassThrough } from 'primeng/types/scroller';

/**
 * Custom pass-through(pt) options.
 * @template I Type of instance.
 *
 * @see {@link Tree.pt}
 * @group Interface
 */
interface TreePassThroughOptions<I = unknown> {
    /**
     * Used to pass attributes to the host's DOM element.
     */
    host?: PassThroughOption<HTMLElement, I>;
    /**
     * Used to pass attributes to the root's DOM element.
     */
    root?: PassThroughOption<HTMLDivElement, I>;
    /**
     * Used to pass attributes to the loading mask's DOM element.
     */
    mask?: PassThroughOption<HTMLDivElement, I>;
    /**
     * Used to pass attributes to the loading icon's DOM element.
     */
    loadingIcon?: PassThroughOption<HTMLElement, I>;
    /**
     * Used to pass attributes to the filter container's DOM element.
     */
    pcFilterContainer?: IconFieldPassThrough;
    /**
     * Used to pass attributes to the filter icon container's DOM element.
     */
    pcFilterIconContainer?: InputIconPassThrough;
    /**
     * Used to pass attributes to the filter input's DOM element.
     */
    pcFilterInput?: InputTextPassThrough;
    /**
     * Used to pass attributes to the filter icon's DOM element.
     */
    filterIcon?: PassThroughOption<HTMLElement, I>;
    /**
     * Used to pass attributes to the Scroller component.
     */
    pcScroller?: VirtualScrollerPassThrough;
    /**
     * Used to pass attributes to the wrapper's DOM element.
     */
    wrapper?: PassThroughOption<HTMLDivElement, I>;
    /**
     * Used to pass attributes to the root children's DOM element.
     */
    rootChildren?: PassThroughOption<HTMLUListElement, I>;
    /**
     * Used to pass attributes to the node's DOM element.
     */
    node?: PassThroughOption<HTMLLIElement, I>;
    /**
     * Used to pass attributes to the drop point's DOM element.
     */
    dropPoint?: PassThroughOption<HTMLDivElement, I>;
    /**
     * Used to pass attributes to the node content's DOM element.
     */
    nodeContent?: PassThroughOption<HTMLDivElement, I>;
    /**
     * Used to pass attributes to the node toggle button's DOM element.
     */
    nodeToggleButton?: PassThroughOption<HTMLButtonElement, I>;
    /**
     * Used to pass attributes to the node toggle icon's DOM element.
     */
    nodeTogglerIcon?: PassThroughOption<HTMLElement, I>;
    /**
     * Used to pass attributes to the node checkbox's DOM element.
     */
    pcNodeCheckbox?: CheckboxPassThrough;
    /**
     * Used to pass attributes to the node icon's DOM element.
     */
    nodeIcon?: PassThroughOption<HTMLSpanElement, I>;
    /**
     * Used to pass attributes to the node label's DOM element.
     */
    nodeLabel?: PassThroughOption<HTMLSpanElement, I>;
    /**
     * Used to pass attributes to the node children's DOM element.
     */
    nodeChildren?: PassThroughOption<HTMLUListElement, I>;
    /**
     * Used to pass attributes to the empty message's DOM element.
     */
    emptyMessage?: PassThroughOption<HTMLDivElement, I>;
}
/**
 * Defines valid pass-through options in Tree.
 * @see {@link TreePassThroughOptions}
 *
 * @template I Type of instance.
 */
type TreePassThrough<I = unknown> = PassThrough<I, TreePassThroughOptions<I>>;
/**
 * Custom node select event.
 * @see {@link Tree.onNodeSelect}
 * @group Events
 */
interface TreeNodeSelectEvent {
    /**
     * Browser event
     */
    originalEvent: Event;
    /**
     * Node instance.
     */
    node: TreeNode<any>;
}
/**
 * Custom node unselect event.
 * @see {@link Tree.onNodeUnSelect}
 * @extends {TreeNodeSelectEvent}
 * @group Events
 */
interface TreeNodeUnSelectEvent extends TreeNodeSelectEvent {
}
/**
 * Custom node expand event.
 * @see {@link Tree.onNodeExpand}
 * @extends {TreeNodeSelectEvent}
 * @group Events
 */
interface TreeNodeExpandEvent extends TreeNodeSelectEvent {
}
/**
 * Custom node collapse event.
 * @see {@link Tree.onNodeCollapse}
 * @extends {TreeNodeSelectEvent}
 * @group Events
 */
interface TreeNodeCollapseEvent extends TreeNodeSelectEvent {
}
/**
 * Custom context menu select event.
 * @see {@link Tree.onNodeContextMenuSelect}
 * @extends {TreeNodeSelectEvent}
 * @group Events
 */
interface TreeNodeContextMenuSelectEvent extends TreeNodeSelectEvent {
}
/**
 * Custom node double click event.
 * @see {@link Tree.onNodeDoubleClick}
 * @extends {TreeNodeSelectEvent}
 * @group Events
 */
interface TreeNodeDoubleClickEvent extends TreeNodeSelectEvent {
}
/**
 * Custom node drop event.
 * @see {@link Tree.onNodeDrop}
 * @group Events
 */
interface TreeNodeDropEvent {
    /**
     * Browser drag event.
     */
    originalEvent?: DragEvent;
    /**
     * Dragged node instance.
     */
    dragNode?: TreeNode<any> | null;
    /**
     * Dropped node instance.
     */
    dropNode?: TreeNode<any> | null;
    /**
     * Index of the dragged node.
     */
    index?: number;
    /**
     * Callback to invoke on drop.
     */
    accept?: Function;
}
/**
 * Custom lazy load event.
 * @see {@link Tree.onLazyLoad}
 * @group Events
 */
interface TreeLazyLoadEvent {
    /**
     * First element index in viewport.
     */
    first: number;
    /**
     * Last element index in viewport.
     */
    last: number;
}
/**
 * Custom scroll index change event.
 * @see {@link Tree.onScrollIndexChange}
 * @group Events
 */
interface TreeScrollIndexChangeEvent extends TreeLazyLoadEvent {
}
/**
 * Custom scroll event.
 * @see {@link Tree.onScroll}
 * @group Events
 */
interface TreeScrollEvent {
    /**
     * Browser event.
     */
    originalEvent?: Event;
}
/**
 * Custom filter event.
 * @see {@link Tree.onFilter}
 * @group Events
 */
interface TreeFilterEvent {
    /**
     * Filter value.
     */
    filter: string;
    /**
     * Filtered nodes.
     */
    filteredValue: TreeNode<any>[] | null | undefined;
}
/**
 * Custom filter template context.
 * @group Interface
 */
interface TreeFilterTemplateContext {
    /**
     * Filter options with filter and reset methods.
     */
    $implicit: {
        filter: (value: string) => void;
        reset: () => void;
    };
}
/**
 * Custom loader template context.
 * @group Interface
 */
interface TreeLoaderTemplateContext {
    /**
     * Scroller options.
     * @see {@link ScrollerOptions}
     */
    options: ScrollerOptions;
}
/**
 * Custom toggler icon template context.
 * @group Interface
 */
interface TreeTogglerIconTemplateContext {
    /**
     * Expanded state of the node.
     */
    $implicit: boolean;
    /**
     * Loading state of the node.
     */
    loading: boolean;
}
/**
 * Custom checkbox icon template context.
 * @group Interface
 */
interface TreeCheckboxIconTemplateContext {
    /**
     * Checked state of the node.
     */
    $implicit: boolean;
    /**
     * Partial selection state of the node.
     */
    partialSelected: boolean;
    /**
     * Style class of the checkbox.
     */
    class: string;
}
/**
 * Defines valid templates in Tree.
 * @group Templates
 */
interface TreeTemplates {
    /**
     * Custom header template.
     */
    header(): TemplateRef<void>;
    /**
     * Custom empty message template.
     */
    empty(): TemplateRef<void>;
    /**
     * Custom footer template.
     */
    footer(): TemplateRef<void>;
    /**
     * Custom filter template.
     * @param {TreeFilterTemplateContext} context - filter context.
     */
    filter(context: TreeFilterTemplateContext): TemplateRef<TreeFilterTemplateContext>;
    /**
     * Custom loader template.
     * @param {TreeLoaderTemplateContext} context - loader context.
     */
    loader(context: TreeLoaderTemplateContext): TemplateRef<TreeLoaderTemplateContext>;
    /**
     * Custom toggler icon template.
     * @param {TreeTogglerIconTemplateContext} context - toggler icon context.
     */
    togglericon(context: TreeTogglerIconTemplateContext): TemplateRef<TreeTogglerIconTemplateContext>;
    /**
     * Custom checkbox icon template.
     * @param {TreeCheckboxIconTemplateContext} context - checkbox icon context.
     */
    checkboxicon(context: TreeCheckboxIconTemplateContext): TemplateRef<TreeCheckboxIconTemplateContext>;
    /**
     * Custom loading icon template.
     */
    loadingicon(): TemplateRef<void>;
    /**
     * Custom filter icon template.
     */
    filtericon(): TemplateRef<void>;
}

export type { TreeCheckboxIconTemplateContext, TreeFilterEvent, TreeFilterTemplateContext, TreeLazyLoadEvent, TreeLoaderTemplateContext, TreeNodeCollapseEvent, TreeNodeContextMenuSelectEvent, TreeNodeDoubleClickEvent, TreeNodeDropEvent, TreeNodeExpandEvent, TreeNodeSelectEvent, TreeNodeUnSelectEvent, TreePassThrough, TreePassThroughOptions, TreeScrollEvent, TreeScrollIndexChangeEvent, TreeTemplates, TreeTogglerIconTemplateContext };