Replace file systems dropdown with radio buttons

app/src/main/java/sushi/hardcore/droidfs/add_volume/CreateVolumeFragment.kt

@@ -7,13 +7,23 @@ import android.text.InputType
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.AdapterView
 import android.widget.ArrayAdapter
+import android.widget.RadioButton
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.children
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.lifecycleScope
-import sushi.hardcore.droidfs.*
+import sushi.hardcore.droidfs.BuildConfig
+import sushi.hardcore.droidfs.Constants
+import sushi.hardcore.droidfs.FingerprintProtector
+import sushi.hardcore.droidfs.LoadingTask
+import sushi.hardcore.droidfs.R
+import sushi.hardcore.droidfs.Theme
+import sushi.hardcore.droidfs.VolumeData
+import sushi.hardcore.droidfs.VolumeDatabase
+import sushi.hardcore.droidfs.VolumeManagerApp
+import sushi.hardcore.droidfs.databinding.FileSystemRadioBinding
 import sushi.hardcore.droidfs.databinding.FragmentCreateVolumeBinding
 import sushi.hardcore.droidfs.filesystems.CryfsVolume
 import sushi.hardcore.droidfs.filesystems.EncryptedVolume
@@ -23,9 +33,11 @@ import sushi.hardcore.droidfs.util.ObjRef
 import sushi.hardcore.droidfs.util.UIUtils
 import sushi.hardcore.droidfs.widgets.CustomAlertDialogBuilder
 import java.io.File
-import java.util.*
+import java.util.Arrays
 
 class CreateVolumeFragment: Fragment() {
+    internal data class FileSystemInfo(val nameResource: Int, val detailsResource: Int, val ciphersResource: Int)
+
     companion object {
         private const val KEY_THEME_VALUE = "theme"
         private const val KEY_VOLUME_PATH = "path"
@@ -34,6 +46,17 @@ class CreateVolumeFragment: Fragment() {
         private const val KEY_PIN_PASSWORDS = Constants.PIN_PASSWORDS_KEY
         private const val KEY_USF_FINGERPRINT = "fingerprint"
         
+        private val GOCRYPTFS_INFO = FileSystemInfo(
+            R.string.gocryptfs,
+            R.string.gocryptfs_details,
+            R.array.gocryptfs_encryption_ciphers,
+        )
+        private val CRYFS_INFO = FileSystemInfo(
+            R.string.cryfs,
+            R.string.cryfs_details,
+            R.array.cryfs_encryption_ciphers,
+        )
+
         fun newInstance(
             theme: Theme,
             volumePath: String,
@@ -57,7 +80,7 @@ class CreateVolumeFragment: Fragment() {
 
     private lateinit var binding: FragmentCreateVolumeBinding
     private lateinit var theme: Theme
-    private val volumeTypes = ArrayList<String>(2)
+    private val fileSystemInfos = ArrayList<FileSystemInfo>(2)
     private lateinit var volumePath: String
     private var isHiddenVolume: Boolean = false
     private var rememberVolume: Boolean = false
@@ -92,17 +115,10 @@ class CreateVolumeFragment: Fragment() {
             binding.checkboxSavePassword.visibility = View.GONE
         }
         if (!BuildConfig.GOCRYPTFS_DISABLED) {
-            volumeTypes.add(resources.getString(R.string.gocryptfs))
+            fileSystemInfos.add(GOCRYPTFS_INFO)
         }
         if (!BuildConfig.CRYFS_DISABLED) {
-            volumeTypes.add(resources.getString(R.string.cryfs))
-        }
-        binding.spinnerVolumeType.adapter = ArrayAdapter(
-            requireContext(),
-            android.R.layout.simple_spinner_item,
-            volumeTypes
-        ).apply {
-            setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
+            fileSystemInfos.add(CRYFS_INFO)
         }
         val encryptionCipherAdapter = ArrayAdapter(
             requireContext(),
@@ -111,19 +127,29 @@ class CreateVolumeFragment: Fragment() {
         ).apply {
             setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
         }
-        binding.spinnerVolumeType.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
-            override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
-                val ciphersArray = if (volumeTypes[position] == resources.getString(R.string.gocryptfs)) {
-                    R.array.gocryptfs_encryption_ciphers
-                } else {
-                    R.array.cryfs_encryption_ciphers
+        for ((i, fs) in fileSystemInfos.iterator().withIndex()) {
+            with(FileSystemRadioBinding.inflate(layoutInflater)) {
+                title.text = getString(fs.nameResource)
+                details.text = getString(fs.detailsResource)
+                radio.isChecked = i == 0
+                root.setOnClickListener {
+                    radio.performClick()
                 }
-                with(encryptionCipherAdapter) {
-                    clear()
-                    addAll(resources.getStringArray(ciphersArray).asList())
+                radio.setOnCheckedChangeListener { _, isChecked ->
+                    if (isChecked) {
+                        with(encryptionCipherAdapter) {
+                            clear()
+                            addAll(resources.getStringArray(fs.ciphersResource).asList())
+                        }
+                        binding.radioGroupFilesystems.children.forEach {
+                            if (it != root) {
+                                it.findViewById<RadioButton>(R.id.radio).isChecked = false
+                            }
+                        }
+                    }
                 }
+                binding.radioGroupFilesystems.addView(root)
             }
-            override fun onNothingSelected(parent: AdapterView<*>?) {}
         }
         binding.spinnerCipher.adapter = encryptionCipherAdapter
         if (pinPasswords) {
@@ -145,6 +171,15 @@ class CreateVolumeFragment: Fragment() {
         (activity as AddVolumeActivity).onFragmentLoaded(false)
     }
 
+    private fun getSelectedFileSystemIndex(): Int {
+        for ((i, child) in binding.radioGroupFilesystems.children.iterator().withIndex()) {
+            if (child.findViewById<RadioButton>(R.id.radio).isChecked) {
+                return i
+            }
+        }
+        return -1
+    }
+
     private fun createVolume() {
         val password = UIUtils.encodeEditTextContent(binding.editPassword)
         val passwordConfirm = UIUtils.encodeEditTextContent(binding.editPasswordConfirm)
@@ -173,7 +208,7 @@ class CreateVolumeFragment: Fragment() {
                     val volumeFile = File(volumePath)
                     if (!volumeFile.exists())
                         volumeFile.mkdirs()
-                    val result = if (volumeTypes[binding.spinnerVolumeType.selectedItemPosition] == resources.getString(R.string.gocryptfs)) {
+                    val result = if (fileSystemInfos[getSelectedFileSystemIndex()] == GOCRYPTFS_INFO) {
                         val xchacha = when (binding.spinnerCipher.selectedItemPosition) {
                             0 -> -1   // auto
                             1 -> 0    // AES-GCM

app/src/main/res/layout/file_system_radio.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:clickable="true"
+    android:focusable="true"
+    android:background="?attr/selectableItemBackground"
+    android:paddingVertical="@dimen/selectable_row_vertical_padding">
+
+    <RadioButton
+        android:id="@+id/radio"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerVertical="true"
+        android:layout_marginStart="30dp"
+        android:layout_marginEnd="10dp"/>
+
+    <LinearLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:layout_toEndOf="@+id/radio"
+        android:layout_alignParentEnd="true">
+
+        <TextView
+            android:id="@+id/title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textSize="@dimen/title_text_size"/>
+
+        <TextView
+            android:id="@+id/details"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textColor="@color/textColorSecondary"/>
+
+    </LinearLayout>
+
+</RelativeLayout>

app/src/main/res/layout/fragment_create_volume.xml

@@ -3,25 +3,25 @@
     android:orientation="vertical"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:gravity="center_vertical"
-    android:layout_marginHorizontal="@dimen/volume_operation_horizontal_gap">
+    android:gravity="center_vertical">
 
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="@string/volume_type_label"/>
+        android:text="@string/volume_type_label"
+        android:layout_marginHorizontal="@dimen/volume_operation_horizontal_gap"/>
 
-    <Spinner
-        android:id="@+id/spinner_volume_type"
-        android:layout_width="wrap_content"
+    <RadioGroup
+        android:id="@+id/radio_group_filesystems"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_gravity="center_horizontal"
-        android:layout_marginVertical="@dimen/volume_operation_vertical_gap"/>
+        android:layout_marginVertical="10dp"/>
 
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="@string/password_label"/>
+        android:text="@string/password_label"
+        android:layout_marginHorizontal="@dimen/volume_operation_horizontal_gap"/>
 
     <EditText
         android:id="@+id/edit_password"
@@ -30,13 +30,15 @@
         android:inputType="textPassword"
         android:maxLines="1"
         android:autofillHints="password"
-        android:hint="@string/password"/>
+        android:hint="@string/password"
+        android:layout_marginHorizontal="@dimen/volume_operation_horizontal_gap"/>
 
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@string/password_confirmation_label"
-        android:layout_marginTop="@dimen/volume_operation_vertical_gap"/>
+        android:layout_marginTop="@dimen/volume_operation_vertical_gap"
+        android:layout_marginHorizontal="@dimen/volume_operation_horizontal_gap"/>
 
     <EditText
         android:id="@+id/edit_password_confirm"
@@ -45,11 +47,13 @@
         android:inputType="textPassword"
         android:maxLines="1"
         android:autofillHints="password"
-        android:hint="@string/password_confirmation_hint"/>
+        android:hint="@string/password_confirmation_hint"
+        android:layout_marginHorizontal="@dimen/volume_operation_horizontal_gap"/>
 
     <RelativeLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        android:layout_marginHorizontal="@dimen/volume_operation_horizontal_gap"
         android:layout_marginVertical="@dimen/volume_operation_vertical_gap">
 
         <TextView

app/src/main/res/layout/fragment_select_path.xml

@@ -13,6 +13,7 @@
         android:focusable="true"
         android:background="?attr/selectableItemBackground"
         android:paddingHorizontal="@dimen/volume_operation_horizontal_gap"
+        android:paddingVertical="@dimen/selectable_row_vertical_padding"
         android:layout_marginBottom="@dimen/volume_operation_vertical_gap">
 
         <ImageView

app/src/main/res/values/dimens.xml

@@ -12,4 +12,5 @@
     <dimen name="dialog_padding_top">10dp</dimen>
     <dimen name="dialog_text_size">16sp</dimen>
     <dimen name="title_file_name_text_size">20sp</dimen>
+    <dimen name="selectable_row_vertical_padding">10dp</dimen>
 </resources>

app/src/main/res/values/strings.xml

@@ -287,4 +287,6 @@
     <string name="usf_background_summary">Don\'t lock volumes when the app goes in background</string>
     <string name="usf_keep_open">Keep volumes open</string>
     <string name="usf_keep_open_summary">Maintain the app always running in the background to keep volumes open</string>
+    <string name="gocryptfs_details">Fast, but doesn\'t hide file sizes and directory structure</string>
+    <string name="cryfs_details">Slower, but protects metadata and prevents replacement attacks</string>
 </resources>