Extension functions using window insets

WindowInsetsExtensions.kt

import androidx.annotation.ColorRes
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.WindowCompat
import androidx.core.view.WindowInsetsCompat
import androidx.core.view.WindowInsetsControllerCompat
import com.sample.app.R

private val statusAndNavBarType =
    WindowInsetsCompat.Type.statusBars() or WindowInsetsCompat.Type.navigationBars()

fun AppCompatActivity.setWindowMode(mode: WindowMode) {
    val containerView = window.decorView

    // Note: If the activity XML has android:fitsSystemWindows="true" then this will not work!
    WindowCompat.setDecorFitsSystemWindows(window, mode.showStatusBar && mode.showNavBar)

    WindowInsetsControllerCompat(window, containerView).apply {
        WindowInsetsCompat.Type.statusBars().let { if (mode.showStatusBar) show(it) else hide(it) }
        WindowInsetsCompat.Type.navigationBars().let { if (mode.showNavBar) show(it) else hide(it) }

        isAppearanceLightStatusBars = mode.isLightStatusBar
        isAppearanceLightNavigationBars = mode.isLightNavBar
    }

    window.statusBarColor = resources.getColor(mode.statusBarColor, theme)
    window.navigationBarColor = resources.getColor(mode.navBarColor, theme)
}

/**
 * Set the window and inset properties of your view. When using a light status/navigation bar
 * color, be sure to set the appropriate flags to reflect this, [isLightStatusBar] and
 * [isLightNavBar].
 *
 * The following will ignore the fullscreen configuration and cause unwanted inset padding for
 * a status and nav bar that doesn't take up space.
 * ```xml
 * <androidx.coordinatorlayout.widget.CoordinatorLayout
 *   xmlns:android="http://schemas.android.com/apk/res/android"
 *   android:layout_width="match_parent"
 *   android:layout_height="match_parent"
 *   android:fitsSystemWindows="true"
 * ```
 *
 * Note that [isLightNavBar] is always false for APIs less than 26. This can be set, but will have
 * no affect for versions prior to 26.
 */
data class WindowMode(
    val showStatusBar: Boolean,
    val isLightStatusBar: Boolean,
    @ColorRes val statusBarColor: Int,
    val showNavBar: Boolean,
    val isLightNavBar: Boolean,
    @ColorRes val navBarColor: Int,
) {
    companion object {
        val Light = WindowMode(
            showStatusBar = true,
            isLightStatusBar = true,
            statusBarColor = R.color.white,
            showNavBar = true,
            isLightNavBar = true,
            navBarColor = R.color.white,
        )

        val Dark = WindowMode(
            showStatusBar = true,
            isLightStatusBar = false,
            statusBarColor = R.color.colorPrimary,
            showNavBar = true,
            isLightNavBar = false,
            navBarColor = R.color.black,
        )

        val Fullscreen = Dark.copy(
            showStatusBar = false,
            showNavBar = false,
        )

        val Default = Light
    }
}