NativeScript/nativescript-core/ui/page/index.android.ts

import {
	PageBase,
	actionBarHiddenProperty,
	statusBarStyleProperty,
	androidStatusBarBackgroundProperty,
} from "./page-common";
import { View } from "../core/view";
import { Color } from "../../color";
import { ActionBar } from "../action-bar";
import { GridLayout } from "../layouts/grid-layout";
import { device } from "../../platform";
import { profile } from "../../profiling";

export * from "./page-common";

const SYSTEM_UI_FLAG_LIGHT_STATUS_BAR = 0x00002000;
const STATUS_BAR_LIGHT_BCKG = -657931;
const STATUS_BAR_DARK_BCKG = 1711276032;

export class Page extends PageBase {
	nativeViewProtected: org.nativescript.widgets.GridLayout;

	public createNativeView() {
		const layout = new org.nativescript.widgets.GridLayout(this._context);
		layout.addRow(
			new org.nativescript.widgets.ItemSpec(
				1,
				org.nativescript.widgets.GridUnitType.auto
			)
		);
		layout.addRow(
			new org.nativescript.widgets.ItemSpec(
				1,
				org.nativescript.widgets.GridUnitType.star
			)
		);

		return layout;
	}

	public initNativeView(): void {
		super.initNativeView();
		this.nativeViewProtected.setBackgroundColor(-1); // White color.
	}

	public _addViewToNativeVisualTree(child: View, atIndex?: number): boolean {
		// Set the row property for the child
		if (this.nativeViewProtected && child.nativeViewProtected) {
			if (child instanceof ActionBar) {
				GridLayout.setRow(child, 0);
				child.horizontalAlignment = "stretch";
				child.verticalAlignment = "top";
			} else {
				GridLayout.setRow(child, 1);
			}
		}

		return super._addViewToNativeVisualTree(child, atIndex);
	}

	@profile()
	public onLoaded() {
		super.onLoaded();
		if (!this.hasActionBar && this.actionBarHidden !== true) {
			// ensure actionBar is created
			// but we only need to do that if the actionBarHidden is not hidden
			this.actionBar = new ActionBar();
		}
		if (this.hasActionBar) {
			this.updateActionBar();
		}
	}

	private updateActionBar() {
		// the test is actually to ensure the actionBar is created
		// it will be created if not
		if (this.actionBar) {
			this.actionBar.update();
		}
	}

	[actionBarHiddenProperty.setNative](value: boolean) {
		// in case the actionBar is not created and actionBarHidden is changed to true
		// the actionBar will be created by updateActionBar
		if (!value || this.hasActionBar) {
			this.updateActionBar();
		}
	}

	[statusBarStyleProperty.getDefault](): {
		color: number;
		systemUiVisibility: number;
	} {
		if (device.sdkVersion >= "21") {
			const window = (<androidx.appcompat.app.AppCompatActivity>(
				this._context
			)).getWindow();
			const decorView = window.getDecorView();

			return {
				color: (<any>window).getStatusBarColor(),
				systemUiVisibility: decorView.getSystemUiVisibility(),
			};
		}

		return null;
	}
	[statusBarStyleProperty.setNative](
		value: "dark" | "light" | { color: number; systemUiVisibility: number }
	) {
		if (device.sdkVersion >= "21") {
			const window = (<androidx.appcompat.app.AppCompatActivity>(
				this._context
			)).getWindow();
			const decorView = window.getDecorView();

			if (value === "light") {
				(<any>window).setStatusBarColor(STATUS_BAR_LIGHT_BCKG);
				decorView.setSystemUiVisibility(
					SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
				);
			} else if (value === "dark") {
				(<any>window).setStatusBarColor(STATUS_BAR_DARK_BCKG);
				decorView.setSystemUiVisibility(0);
			} else {
				(<any>window).setStatusBarColor(value.color);
				decorView.setSystemUiVisibility(value.systemUiVisibility);
			}
		}
	}

	[androidStatusBarBackgroundProperty.getDefault](): number {
		if (device.sdkVersion >= "21") {
			const window = (<androidx.appcompat.app.AppCompatActivity>(
				this._context
			)).getWindow();

			return (<any>window).getStatusBarColor();
		}

		return null;
	}
	[androidStatusBarBackgroundProperty.setNative](value: number | Color) {
		if (device.sdkVersion >= "21") {
			const window = (<androidx.appcompat.app.AppCompatActivity>(
				this._context
			)).getWindow();
			const color = value instanceof Color ? value.android : value;
			(<any>window).setStatusBarColor(color);
		}
	}
}