NativeScript/nativescript-core/ui/tabs/tabs-common.ts

// Types
import { Tabs as TabsDefinition } from ".";

// Requires
import { TabNavigationBase } from "../tab-navigation-base/tab-navigation-base";
import { CSSType, booleanConverter } from "../core/view";
import { Property } from "../core/properties";

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";

export const traceCategory = "TabView";

export module knownCollections {
    export const items = "items";
}

@CSSType("Tabs")
export class TabsBase extends TabNavigationBase implements TabsDefinition {
    public swipeEnabled: boolean;
    public offscreenTabLimit: number;
    public tabsPosition: "top" | "bottom";
    public iOSTabBarItemsAlignment: IOSTabBarItemsAlignment;
}

// TODO: Add Unit tests
export const swipeEnabledProperty = new Property<TabsBase, boolean>({
    name: "swipeEnabled", defaultValue: true, valueConverter: booleanConverter
});
swipeEnabledProperty.register(TabsBase);

// TODO: Add Unit tests
// TODO: Coerce to max number of items?
export const offscreenTabLimitProperty = new Property<TabsBase, number>({
    name: "offscreenTabLimit", defaultValue: 1, valueConverter: (v) => parseInt(v)
});
offscreenTabLimitProperty.register(TabsBase);

export const tabsPositionProperty = new Property<TabsBase, "top" | "bottom">({ name: "tabsPosition", defaultValue: "top" });
tabsPositionProperty.register(TabsBase);

export type IOSTabBarItemsAlignment = "leading" | "justified" | "center" | "centerSelected";
export const iOSTabBarItemsAlignmentProperty = new Property<TabsBase, IOSTabBarItemsAlignment>({ name: "iOSTabBarItemsAlignment", defaultValue: "justified" });
iOSTabBarItemsAlignmentProperty.register(TabsBase);