/**
 * Contains the BottomNavigation class, which represents a tab navigation widget with static tabs at the bottom.
 * @module "ui/tab-navigation/bottom-navigation"
 */ /** */

import { TabNavigationBase } from "../tab-navigation-base/tab-navigation-base";
import { TabContentItem } from "../tab-navigation-base/tab-content-item";
import { TabStrip } from "../tab-navigation-base/tab-strip";
import { Property, CoercibleProperty, EventData } from "../core/view";

export * from "../tab-navigation-base/tab-content-item";
export * from "../tab-navigation-base/tab-navigation-base";
export * from "../tab-navigation-base/tab-strip";
export * from "../tab-navigation-base/tab-strip-item";

/**
 * Defines the data for the TabView.selectedIndexChanged event.
 */
export interface SelectedIndexChangedEventData extends EventData {
    /**
     * The old selected index.
     */
    oldIndex: number;

    /**
     * The new selected index.
     */
    newIndex: number;
}

/**
 * Represents a tab navigation widget with static tabs at the bottom.
 */
export class BottomNavigation extends TabNavigationBase {
    /**
     * Gets or sets the items of the BottomNavigation.
     */
    items: Array<TabContentItem>;

    /**
     * Gets or sets the tab strip of the BottomNavigation.
     */
    tabStrip: TabStrip;

    /**
     * Gets or sets the selectedIndex of the BottomNavigation.
     */
    selectedIndex: number;

    /**
     * Gets the native [android widget](http://developer.android.com/reference/android/support/v4/view/ViewPager.html) that represents the user interface for this component. Valid only when running on Android OS.
     */
    android: any /* android.view.View */; //android.support.v4.view.ViewPager;

    /**
     * Gets the native iOS [UITabBarController](https://developer.apple.com/library/ios/documentation/UIKit/Reference/UITabBarController_Class/) that represents the user interface for this component. Valid only when running on iOS.
     */
    ios: any /* UITabBarController */;

    /**
     * String value used when hooking to the selectedIndexChanged event.
     */
    public static selectedIndexChangedEvent: string;

    /**
     * A basic method signature to hook an event listener (shortcut alias to the addEventListener method).
     * @param eventNames - String corresponding to events (e.g. "propertyChange"). Optionally could be used more events separated by `,` (e.g. "propertyChange", "change").
     * @param callback - Callback function which will be executed when event is raised.
     * @param thisArg - An optional parameter which will be used as `this` context for callback execution.
     */
    on(eventNames: string, callback: (data: EventData) => void, thisArg?: any);

    /**
     * Raised when the selected index changes.
     */
    on(event: "selectedIndexChanged", callback: (args: SelectedIndexChangedEventData) => void, thisArg?: any);
}

export const itemsProperty: Property<BottomNavigation, TabContentItem[]>;
export const tabStripProperty: Property<BottomNavigation, TabStrip>
export const selectedIndexProperty: CoercibleProperty<BottomNavigation, number>;