Fix file viewers navigation bar color in dark mode

app/src/main/java/sushi/hardcore/droidfs/file_viewers/FileViewerActivity.kt

@@ -3,6 +3,7 @@ package sushi.hardcore.droidfs.file_viewers
 import android.os.Bundle
 import android.view.View
 import androidx.activity.addCallback
+import androidx.core.content.ContextCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.WindowInsetsControllerCompat
 import sushi.hardcore.droidfs.BaseActivity
@@ -27,6 +28,7 @@ abstract class FileViewerActivity: BaseActivity() {
     private var wasMapped = false
     protected val mappedPlaylist = mutableListOf<ExplorerElement>()
     protected var currentPlaylistIndex = -1
+    protected open var fullscreenMode = true
     private val legacyMod by lazy {
         sharedPrefs.getBoolean("legacyMod", false)
     }
@@ -47,11 +49,18 @@ abstract class FileViewerActivity: BaseActivity() {
             isEnabled = false
             onBackPressedDispatcher.onBackPressed()
         }
-        hideSystemUi()
+        if (fullscreenMode) {
+            fixNavBarColor()
+            hideSystemUi()
+        }
         viewFile()
     }
 
-    open fun hideSystemUi() {
+    private fun fixNavBarColor() {
+        window.navigationBarColor = ContextCompat.getColor(this, R.color.fullScreenBackgroundColor)
+    }
+
+    private fun hideSystemUi() {
         if (legacyMod) {
             @Suppress("Deprecation")
             window.decorView.systemUiVisibility =
@@ -67,7 +76,7 @@ abstract class FileViewerActivity: BaseActivity() {
 
     override fun onUserInteraction() {
         super.onUserInteraction()
-        if (windowTypeMask and WindowInsetsCompat.Type.statusBars() == 0) {
+        if (fullscreenMode && windowTypeMask and WindowInsetsCompat.Type.statusBars() == 0) {
             hideSystemUi()
         }
     }

app/src/main/java/sushi/hardcore/droidfs/file_viewers/PdfViewer.kt

@@ -10,12 +10,9 @@ class PdfViewer: FileViewerActivity() {
     init {
         applyCustomTheme = false
     }
+    override var fullscreenMode = false
     private lateinit var pdfViewer: PdfViewer
 
-    override fun hideSystemUi() {
-        //don't hide system ui
-    }
-
     override fun getFileType(): String {
         return "pdf"
     }

app/src/main/java/sushi/hardcore/droidfs/file_viewers/TextEditor.kt

@@ -7,20 +7,16 @@ import android.view.Menu
 import android.view.MenuItem
 import android.widget.EditText
 import android.widget.Toast
-import sushi.hardcore.droidfs.ConstValues
 import sushi.hardcore.droidfs.R
 import sushi.hardcore.droidfs.widgets.CustomAlertDialogBuilder
-import java.io.ByteArrayInputStream
 import java.io.File
 
 class TextEditor: FileViewerActivity() {
+    override var fullscreenMode = false
     private lateinit var fileName: String
     private lateinit var editor: EditText
     private var changedSinceLastSave = false
     private var wordWrap = true
-    override fun hideSystemUi() {
-        //don't hide system ui
-    }
 
     override fun getFileType(): String {
         return "text"