some ui improvements

2024-11-17 17:56:30 +03:00
parent 153506fc83
commit 1d7050c687
22 changed files with 358 additions and 299 deletions
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/Utils.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/Utils.kt
@@ -3,6 +3,7 @@ package org.foxarmy.barcodescannerforemployees
 import android.app.Activity
 import android.content.Context
 import android.content.ContextWrapper
+import android.content.SharedPreferences
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import android.graphics.Matrix
@@ -197,13 +198,7 @@ fun noInternetConnectionAvailableNotification(context: Context) {
                exitProcess(0)
            }
            .setNeutralButton(R.string.logout) { _, _ ->
-                val sharedPreferences = EncryptedSharedPreferences.create(
-                    "sensitive",
-                    MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-                    context,
-                    EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-                    EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-                )
+                val sharedPreferences = getPreferences(context)

                sharedPreferences.edit().putString("token", "").apply()
                sharedPreferences.edit().putString("server", "").apply()
@@ -212,4 +207,14 @@ fun noInternetConnectionAvailableNotification(context: Context) {
                exitProcess(0)
            }.show()
    }
+}
+
+fun getPreferences(context: Context): SharedPreferences {
+    return EncryptedSharedPreferences.create(
+        "sensitive",
+        MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
+        context,
+        EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
+        EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
+    )
 }
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AccountSettingsActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AccountSettingsActivity.kt
@@ -4,8 +4,6 @@ import android.content.Intent
 import android.os.Bundle
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityAccountSettingsBinding
@@ -21,15 +19,7 @@ class AccountSettingsActivity : AppCompatActivity() {

        setContentView(binding.root)

-        val masterKeyAlias = MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC)
-
-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            masterKeyAlias,
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        val sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        val net = Net()

--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AddAbstractProductActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AddAbstractProductActivity.kt
@@ -17,8 +17,6 @@ import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.core.widget.addTextChangedListener
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import com.journeyapps.barcodescanner.ScanContract
 import com.journeyapps.barcodescanner.ScanIntentResult
 import com.journeyapps.barcodescanner.ScanOptions
@@ -33,7 +31,6 @@ import java.io.FileOutputStream
 import java.nio.file.Files
 import java.nio.file.StandardCopyOption
 import kotlin.concurrent.thread
-import kotlin.math.abs

 class AddAbstractProductActivity : AppCompatActivity() {
    private lateinit var imageView: ImageView
@@ -66,13 +63,7 @@ class AddAbstractProductActivity : AppCompatActivity() {

        setContentView(R.layout.fragment_add_abstract_product)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(this)

        val dbHelper = DBStorageController(this, sharedPreferences.getString("currentGroup", "offline")!!)
        DAO = AbstractProductDAO(dbHelper)
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AddCategoryActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AddCategoryActivity.kt
@@ -6,8 +6,6 @@ import android.os.Bundle
 import android.widget.Button
 import android.widget.EditText
 import android.widget.Toast
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.database.CategoryDAO
@@ -24,13 +22,7 @@ class AddCategoryActivity : Activity() {

        setContentView(R.layout.activity_add_category)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        val dbHelper = DBStorageController(this, sharedPreferences.getString("currentGroup", "offline")!!)
        DAO = CategoryDAO(dbHelper)
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AddProductActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AddProductActivity.kt
@@ -13,8 +13,6 @@ import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.core.widget.addTextChangedListener
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import com.journeyapps.barcodescanner.ScanContract
 import com.journeyapps.barcodescanner.ScanIntentResult
 import com.journeyapps.barcodescanner.ScanOptions
@@ -61,13 +59,7 @@ class AddProductActivity : AppCompatActivity() {

        setContentView(R.layout.fragment_add_product)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        val dbHelper = DBStorageController(this, sharedPreferences.getString("currentGroup", "offline")!!)
        productDAO = ProductDAO(dbHelper)
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/ExpiryCalendarActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/ExpiryCalendarActivity.kt
@@ -7,8 +7,6 @@ import android.os.Bundle
 import android.widget.LinearLayout
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.database.ProductDAO
@@ -26,13 +24,7 @@ class ExpiryCalendarActivity : AppCompatActivity() {

        setContentView(R.layout.fragment_expiry_dates)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        val dbHelper = DBStorageController(this, sharedPreferences.getString("currentGroup", "database")!!)
        productDAO = ProductDAO(dbHelper)
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/FullscreenActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/FullscreenActivity.kt
@@ -15,10 +15,7 @@ import java.io.File

 class FullscreenActivity : Activity() {

-    private lateinit var binding: ActivityFullscreenBinding
    private lateinit var fullscreenImageView: ImageView
-    private lateinit var fullscreenContentControls: LinearLayout
-    private val hideHandler = Handler(Looper.myLooper()!!)

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/GroupActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/GroupActivity.kt
@@ -4,8 +4,6 @@ import android.content.Intent
 import android.os.Bundle
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityGroupBinding
 import org.foxarmy.barcodescannerforemployees.noInternetConnectionAvailableNotification
@@ -20,13 +18,7 @@ class GroupActivity : AppCompatActivity() {
        binding = ActivityGroupBinding.inflate(layoutInflater)
        setContentView(binding.root)

-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        val sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        binding.createGroupButton.setOnClickListener {
            val groupName = binding.groupNameTextEdit.text.toString()
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/LoginActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/LoginActivity.kt
@@ -5,8 +5,6 @@ import android.os.Bundle
 import android.widget.ArrayAdapter
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityLoginBinding
@@ -26,13 +24,7 @@ class LoginActivity : AppCompatActivity() {

        fillUpLanguagesSpinner()

-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        val sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        binding.loginButton.setOnClickListener {
            val server = binding.serverTextEdit.text.toString()
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/MainActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/MainActivity.kt
@@ -15,8 +15,6 @@ import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.drawerlayout.widget.DrawerLayout
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import androidx.viewpager.widget.ViewPager
 import com.google.android.material.navigation.NavigationView
 import org.foxarmy.barcodescannerforemployees.*
@@ -44,6 +42,9 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
    private var actionBarDrawerToggle: ActionBarDrawerToggle? = null
    private lateinit var ws: WebSocketClient

+    var selectionMode = false
+    private var selectedAmount = 0
+
    private lateinit var sharedPreferences: SharedPreferences

    override fun onCreate(savedInstanceState: Bundle?) {
@@ -52,18 +53,18 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(this)

        setSupportActionBar(binding.toolbar)
        setupViewPager(binding.tabViewpager)
        binding.tabTablayout.setupWithViewPager(binding.tabViewpager)

+        binding.tabTablayout.setOnDragListener { _, _ ->
+            selectionMode = false
+            selectedAmount = 0
+            true
+        }
+
        drawerLayout = binding.drawerLayout
        actionBarDrawerToggle = ActionBarDrawerToggle(this, drawerLayout, R.string.nav_open, R.string.nav_close)

@@ -73,14 +74,6 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte

        supportActionBar!!.setDisplayHomeAsUpEnabled(true)

-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
-
        binding.expiryCalendarFab.setOnClickListener { _ ->
            val expiryCalendarIntent = Intent(this, ExpiryCalendarActivity::class.java)
            val extras = Bundle()
@@ -88,7 +81,7 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
            ContextCompat.startActivity(this, expiryCalendarIntent, extras)
        }

-        binding.newElementFab.setOnClickListener { view ->
+        binding.newElementFab.setOnClickListener { _ ->
            val currentPosition = binding.tabTablayout.selectedTabPosition
            val fragment = adapter.getItem(currentPosition)

@@ -499,4 +492,17 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
        val storageFragment = fragment as StorageFragment
        storageFragment.filterByCategory(id)
    }
+
+    fun addSelection() {
+        selectionMode = true
+        selectedAmount ++
+    }
+
+    fun removeSelection() {
+        selectedAmount --
+        if (selectedAmount <= 0) {
+            selectedAmount = 0
+            selectionMode = false
+        }
+    }
 }
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/ManageGroupActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/ManageGroupActivity.kt
@@ -1,11 +1,10 @@
 package org.foxarmy.barcodescannerforemployees.activities

 import android.content.Context
+import android.content.SharedPreferences
 import android.os.Bundle
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityManageGroupBinding
 import org.foxarmy.barcodescannerforemployees.parseArray
@@ -14,6 +13,7 @@ import org.foxarmy.barcodescannerforemployees.views.GroupMemberView
 class ManageGroupActivity : AppCompatActivity(){
    private lateinit var binding: ActivityManageGroupBinding
    private var isAdmin: Boolean = true
+    private lateinit var sharedPreferences: SharedPreferences

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
@@ -23,15 +23,7 @@ class ManageGroupActivity : AppCompatActivity(){

        val groupId = intent.extras!!.getInt("groupId")

-        val masterKeyAlias = MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC)
-
-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            masterKeyAlias,
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        val net = Net()

@@ -56,14 +48,6 @@ class ManageGroupActivity : AppCompatActivity(){
    }

    fun amIAnAdminIn(groupId: Int): Boolean {
-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
-
        val net = Net()

        net.token = sharedPreferences.getString("token", "")!!
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/MyGroupsActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/MyGroupsActivity.kt
@@ -5,8 +5,6 @@ import android.content.Intent
 import android.os.Bundle
 import android.widget.LinearLayout
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityMyGroupsBinding
@@ -22,13 +20,7 @@ class MyGroupsActivity : AppCompatActivity(){
        binding = ActivityMyGroupsBinding.inflate(layoutInflater)
        setContentView(binding.root)

-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        val sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        val net = Net()

--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/NavigatorActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/NavigatorActivity.kt
@@ -4,8 +4,6 @@ import android.app.Activity
 import android.content.Intent
 import android.content.SharedPreferences
 import android.os.Bundle
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys

 class NavigatorActivity : Activity() {

@@ -14,13 +12,7 @@ class NavigatorActivity : Activity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        var intent = Intent(this, MainActivity::class.java)

--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/SettingsActivity.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/SettingsActivity.kt
@@ -6,8 +6,6 @@ import android.os.Bundle
 import android.view.View
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.databinding.ActivitySettingsBinding

@@ -21,13 +19,7 @@ class SettingsActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)

        myGroups = sharedPreferences.getStringSet("groups", emptySet())!!.toList()
        currentGroup = sharedPreferences.getString("currentGroup", "offline")!!
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/fragments/CategoriesFragment.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/fragments/CategoriesFragment.kt
@@ -11,13 +11,12 @@ import android.widget.Toast
 import androidx.core.content.ContextCompat
 import androidx.core.view.children
 import androidx.fragment.app.Fragment
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.AddCategoryActivity
 import org.foxarmy.barcodescannerforemployees.database.CategoryDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
+import org.foxarmy.barcodescannerforemployees.getPreferences
 import org.foxarmy.barcodescannerforemployees.views.CategoryView

 class CategoriesFragment : Fragment() {
@@ -28,13 +27,7 @@ class CategoriesFragment : Fragment() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            requireContext(),
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(requireContext())

        prepareDatabaseConnection()
    }
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/fragments/ShelfFragment.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/fragments/ShelfFragment.kt
@@ -14,14 +14,13 @@ import androidx.core.content.ContextCompat
 import androidx.core.view.children
 import androidx.fragment.app.Fragment
 import androidx.gridlayout.widget.GridLayout
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.AddProductActivity
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.database.ProductDAO
 import org.foxarmy.barcodescannerforemployees.databinding.FragmentShelfBinding
+import org.foxarmy.barcodescannerforemployees.getPreferences
 import org.foxarmy.barcodescannerforemployees.views.ProductView
 import kotlin.concurrent.thread

@@ -38,16 +37,9 @@ class ShelfFragment : Fragment() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            requireContext(),
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(requireContext())

        prepareDatabaseConnection()
-
    }

    override fun onCreateView(
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/fragments/StorageFragment.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/fragments/StorageFragment.kt
@@ -10,8 +10,6 @@ import android.widget.*
 import androidx.core.content.ContextCompat
 import androidx.core.view.children
 import androidx.fragment.app.Fragment
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.AddAbstractProductActivity
@@ -20,6 +18,7 @@ import org.foxarmy.barcodescannerforemployees.database.AbstractProductDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.databinding.FragmentStorageBinding
 import org.foxarmy.barcodescannerforemployees.generateThumbnailForImage
+import org.foxarmy.barcodescannerforemployees.getPreferences
 import org.foxarmy.barcodescannerforemployees.views.AbstractProductView
 import kotlin.concurrent.thread

@@ -39,13 +38,7 @@ class StorageFragment : Fragment() {
    ): View {
        binding = FragmentStorageBinding.inflate(inflater)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            requireContext(),
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(requireContext())

        prepareDatabaseConnection()

--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/views/AbstractProductView.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/views/AbstractProductView.kt
@@ -16,17 +16,15 @@ import androidx.core.content.ContextCompat
 import androidx.core.content.ContextCompat.startActivity
 import androidx.security.crypto.EncryptedSharedPreferences
 import androidx.security.crypto.MasterKeys
-import org.foxarmy.barcodescannerforemployees.R
+import org.foxarmy.barcodescannerforemployees.*
 import org.foxarmy.barcodescannerforemployees.activities.FullscreenActivity
+import org.foxarmy.barcodescannerforemployees.activities.MainActivity
 import org.foxarmy.barcodescannerforemployees.database.CategoryDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.dataclasses.AbstractProduct
-import org.foxarmy.barcodescannerforemployees.getActivity
-import org.foxarmy.barcodescannerforemployees.getImageUri
-import org.foxarmy.barcodescannerforemployees.getUnitNameById
 import java.io.File

-class AbstractProductView: LinearLayout {
+class AbstractProductView : LinearLayout {
    private var productLayout: ConstraintLayout? = null
    private var productPicture: ImageView? = null
    private var productNameField: TextView? = null
@@ -42,16 +40,10 @@ class AbstractProductView: LinearLayout {

    constructor(context: Context, a: AttributeSet) : super(context, a) {
        activity = getActivity(context)!!
-        val inflater:LayoutInflater = activity.layoutInflater
+        val inflater: LayoutInflater = activity.layoutInflater
        inflater.inflate(R.layout.abstract_product_view, this)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(context)

        val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "database")!!)
        categoryDAO = CategoryDAO(dbHelper)
@@ -60,7 +52,7 @@ class AbstractProductView: LinearLayout {
    constructor(activity: Activity, context: Context, abstractProduct: AbstractProduct) : super(context) {
        this.abstractProduct = abstractProduct
        this.activity = activity
-        val inflater:LayoutInflater = activity.layoutInflater
+        val inflater: LayoutInflater = activity.layoutInflater
        inflater.inflate(R.layout.abstract_product_view, this)

        sharedPreferences = EncryptedSharedPreferences.create(
@@ -76,7 +68,7 @@ class AbstractProductView: LinearLayout {
        update()
    }

-    fun init () {
+    private fun init() {
        productLayout = findViewById(R.id.productLayout)
        productPicture = findViewById(R.id.productPicture)
        productNameField = findViewById(R.id.productNameView)
@@ -84,30 +76,8 @@ class AbstractProductView: LinearLayout {
        categoryField = findViewById(R.id.categoryView)
        unitField = findViewById(R.id.unitView)

-
-        productPicture!!.setOnClickListener {
-            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
-            val extras = Bundle()
-            extras.putString("imagehash", abstractProduct.imageHash)
-            fullscreenIntent.putExtras(extras)
-            startActivity(context, fullscreenIntent, extras)
-        }
-
-        productLayout!!.setOnClickListener {
-
-        }
-
+        setUpClicks()
        unitField?.text = getUnitNameById(context, abstractProduct.unit)
-
-        productLayout!!.setOnLongClickListener {
-            isProductSelected = !isProductSelected
-            this.background = ContextCompat.getDrawable(context, if (isProductSelected) R.drawable.outline_selected else R.drawable.outline)
-            true
-        }
-
-        productNameField!!.setOnClickListener {
-            Toast.makeText(activity, productNameField!!.text, Toast.LENGTH_SHORT).show()
-        }
    }

    fun update() {
@@ -117,10 +87,120 @@ class AbstractProductView: LinearLayout {
        thumbnailsDir.mkdirs()
        val imageUri = getImageUri(activity, File(thumbnailsDir, "${abstractProduct.imageHash}.webp"))
        productPicture!!.setImageURI(imageUri)
-//        productPicture!!.rotation = 90f

        productNameField!!.text = abstractProduct.name
        netWeightField!!.text = abstractProduct.netWeight.toString()
        categoryField!!.text = categoryDAO.getCategoryNameById(abstractProduct.category)
    }
+
+
+    private fun setUpClicks() {
+        productLayout!!.setOnLongClickListener { onAnyLongClick() }
+        productNameField!!.setOnLongClickListener { onNameLongClick() }
+        productPicture!!.setOnLongClickListener { onImageLongClick() }
+        netWeightField!!.setOnLongClickListener { onAnyLongClick() }
+        categoryField!!.setOnLongClickListener { onAnyLongClick() }
+        unitField!!.setOnLongClickListener { onAnyLongClick() }
+
+        productLayout!!.setOnClickListener { onAnyClick() }
+        netWeightField!!.setOnClickListener { onAnyClick() }
+        categoryField!!.setOnClickListener { onAnyClick() }
+        unitField!!.setOnClickListener { onAnyClick() }
+        productPicture!!.setOnClickListener { onImageLongClick() }
+        productNameField!!.setOnClickListener { onNameLongClick() }
+    }
+
+    private fun onAnyClick(): Boolean {
+        if (activity !is MainActivity) return false
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            isProductSelected = !isProductSelected
+
+            if (isProductSelected) {
+                mainActivity.addSelection()
+            } else {
+                mainActivity.removeSelection()
+            }
+
+            this.background = ContextCompat.getDrawable(
+                context,
+                if (isProductSelected) R.drawable.outline_selected else R.drawable.outline
+            )
+            return true
+        } else {
+            return false
+        }
+    }
+
+    private fun onAnyLongClick(): Boolean {
+        if (activity !is MainActivity) return false
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            isProductSelected = !isProductSelected
+
+            if (isProductSelected) {
+                mainActivity.addSelection()
+            } else {
+                mainActivity.removeSelection()
+            }
+
+            this.background = ContextCompat.getDrawable(
+                context,
+                if (isProductSelected) R.drawable.outline_selected else R.drawable.outline
+            )
+            return true
+        } else {
+            mainActivity.addSelection()
+
+            isProductSelected = !isProductSelected
+
+            this.background = ContextCompat.getDrawable(
+                context,
+                if (isProductSelected) R.drawable.outline_selected else R.drawable.outline
+            )
+
+            return true
+        }
+    }
+
+    private fun onImageLongClick(): Boolean {
+        if (activity !is MainActivity) {
+            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
+            val extras = Bundle()
+            extras.putString("imagehash", abstractProduct.imageHash)
+            fullscreenIntent.putExtras(extras)
+            startActivity(context, fullscreenIntent, extras)
+            return true
+        }
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            return onAnyLongClick()
+        } else {
+            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
+            val extras = Bundle()
+            extras.putString("imagehash", abstractProduct.imageHash)
+            fullscreenIntent.putExtras(extras)
+            startActivity(context, fullscreenIntent, extras)
+        }
+        return true
+    }
+
+    private fun onNameLongClick(): Boolean {
+        if (activity !is MainActivity) {
+            Toast.makeText(activity, productNameField!!.text, Toast.LENGTH_SHORT).show()
+
+            return true
+        }
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            return onAnyLongClick()
+        } else {
+            Toast.makeText(activity, productNameField!!.text, Toast.LENGTH_SHORT).show()
+        }
+        return true
+    }
 }
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/views/CategoryView.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/views/CategoryView.kt
@@ -7,16 +7,16 @@ import android.view.LayoutInflater
 import android.widget.LinearLayout
 import android.widget.TextView
 import androidx.core.content.ContextCompat
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.MainActivity
 import org.foxarmy.barcodescannerforemployees.database.AbstractProductDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.dataclasses.Category
+import org.foxarmy.barcodescannerforemployees.getPreferences

 class CategoryView : LinearLayout {
    var category: Category
+
    val categoryName: TextView
    val amountOfProducts: TextView
    var isCategorySelected = false
@@ -27,13 +27,7 @@ class CategoryView : LinearLayout {
    constructor(activity: Activity, context: Context, category: Category) : super(context) {
        this.category = category

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(context)

        val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "database")!!)
        abstractProductDAO = AbstractProductDAO(dbHelper)
@@ -41,7 +35,7 @@ class CategoryView : LinearLayout {
        val inflater: LayoutInflater = activity.layoutInflater
        inflater.inflate(R.layout.category_view, this)

-        this.background = ContextCompat.getDrawable(context, if (isCategorySelected) R.drawable.outline_selected else R.drawable.outline)
+        updateStroke()

        categoryName = findViewById(R.id.categoryNameTextView)
        amountOfProducts = findViewById(R.id.amountOfProducts)
@@ -49,13 +43,45 @@ class CategoryView : LinearLayout {
        categoryName.text = category.name
        amountOfProducts.text = abstractProductDAO.getAmountOfAbstractProductsInCategory(category.id).toString()

-        setOnLongClickListener {
-            isCategorySelected = !isCategorySelected
-            this.background = ContextCompat.getDrawable(context, if (isCategorySelected) R.drawable.outline_selected else R.drawable.outline)
-            true
-        }
-        setOnClickListener {
-            (activity as MainActivity).filterAbstractProductsByCategory(category.id)
+        setUpClicks()
+    }
+
+    private fun setUpClicks() {
+        categoryName.setOnClickListener { onCategoryClick() }
+        amountOfProducts.setOnClickListener { onCategoryClick() }
+
+        categoryName.setOnLongClickListener { onAnyLongClick() }
+        amountOfProducts.setOnLongClickListener { onAnyLongClick() }
+    }
+
+    private fun onCategoryClick(): Boolean {
+        if (context !is MainActivity) return false
+        val mainActivity = context as MainActivity
+
+        if (mainActivity.selectionMode) return onAnyLongClick()
+        else (context as MainActivity).filterAbstractProductsByCategory(category.id)
+
+        return true
+    }
+
+    private fun onAnyLongClick(): Boolean {
+        if (context !is MainActivity) return false
+        val mainActivity = context as MainActivity
+
+        isCategorySelected = !isCategorySelected
+        updateStroke()
+
+        if (mainActivity.selectionMode) {
+            if (isCategorySelected) mainActivity.addSelection()
+            else mainActivity.removeSelection()
+        } else {
+            mainActivity.addSelection()
        }
+        return true
+
+    }
+
+    private fun updateStroke() {
+        this.background = ContextCompat.getDrawable(context, if (isCategorySelected) R.drawable.outline_selected else R.drawable.outline)
    }
 }
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/views/ExpiryGroupView.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/views/ExpiryGroupView.kt
@@ -7,12 +7,11 @@ import android.view.LayoutInflater
 import android.widget.LinearLayout
 import android.widget.TextView
 import androidx.core.content.ContextCompat
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.ExpiryCalendarActivity
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.database.ProductDAO
+import org.foxarmy.barcodescannerforemployees.getPreferences
 import java.text.SimpleDateFormat

 class ExpiryGroupView : LinearLayout {
@@ -24,13 +23,7 @@ class ExpiryGroupView : LinearLayout {

    constructor(activity: Activity, context: Context, representingDate: Long) : super(context) {

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(context)

        val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "database")!!)
        productDAO = ProductDAO(dbHelper)
--- a/app/src/main/java/org/foxarmy/barcodescannerforemployees/views/ProductView.kt
+++ b/app/src/main/java/org/foxarmy/barcodescannerforemployees/views/ProductView.kt
@@ -13,6 +13,7 @@ import android.view.LayoutInflater
 import android.widget.ImageView
 import android.widget.LinearLayout
 import android.widget.TextView
+import android.widget.Toast
 import androidx.annotation.RequiresApi
 import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.core.content.ContextCompat
@@ -21,29 +22,26 @@ import androidx.core.graphics.blue
 import androidx.core.graphics.green
 import androidx.core.graphics.red
 import androidx.core.math.MathUtils.clamp
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
-import org.foxarmy.barcodescannerforemployees.R
+import org.foxarmy.barcodescannerforemployees.*
 import org.foxarmy.barcodescannerforemployees.activities.FullscreenActivity
-import org.foxarmy.barcodescannerforemployees.calculateProductFreshness
+import org.foxarmy.barcodescannerforemployees.activities.MainActivity
 import org.foxarmy.barcodescannerforemployees.database.AbstractProductDAO
 import org.foxarmy.barcodescannerforemployees.database.CategoryDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.dataclasses.AbstractProduct
 import org.foxarmy.barcodescannerforemployees.dataclasses.Product
-import org.foxarmy.barcodescannerforemployees.getActivity
-import org.foxarmy.barcodescannerforemployees.getImageUri
 import java.io.File
 import java.text.DecimalFormat
 import java.text.SimpleDateFormat
 import java.util.*
 import kotlin.concurrent.thread

-class ProductView: LinearLayout {
+class ProductView : LinearLayout {
    var product: Product = Product()
    var isProductSelected = false
    private var activity: Activity

+    private lateinit var productLayout: ConstraintLayout
    private lateinit var productImageView: ImageView
    private lateinit var productNameTextView: TextView
    private lateinit var productNetWeightTextView: TextView
@@ -63,13 +61,7 @@ class ProductView: LinearLayout {
    constructor(context: Context, a: AttributeSet) : super(context, a) {
        activity = getActivity(context)!!

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(context)

        val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "offline")!!)
        abstractProductDAO = AbstractProductDAO(dbHelper)
@@ -86,18 +78,13 @@ class ProductView: LinearLayout {
        val inflater: LayoutInflater = activity.layoutInflater
        inflater.inflate(R.layout.product_view, this)

-        sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
+        sharedPreferences = getPreferences(context)

        val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "offline")!!)
        abstractProductDAO = AbstractProductDAO(dbHelper)
        categoryDAO = CategoryDAO(dbHelper)

+        productLayout = findViewById(R.id.productLayout)
        productImageView = findViewById(R.id.productPicture)
        productNameTextView = findViewById(R.id.productNameView)
        productNetWeightTextView = findViewById(R.id.productNetWeightView)
@@ -106,68 +93,152 @@ class ProductView: LinearLayout {
        productLifeSpan = findViewById(R.id.dateSpan)
        productFreshnessTextView = findViewById(R.id.freshnessPercentTextView)

-        findViewById<ConstraintLayout>(R.id.productLayout).setOnLongClickListener {
-            isProductSelected = !isProductSelected
-            updateStroke()
-            true
-        }
-
-        productImageView.setOnClickListener {
-            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
-            val extras = Bundle()
-            val abstractProduct = abstractProductDAO.findAbstractProductById(product.abstractProductId)
-            extras.putString("imagehash", abstractProduct!!.imageHash)
-            fullscreenIntent.putExtras(extras)
-            startActivity(context, fullscreenIntent, extras)
-        }
+        setUpClicks()

        update()
    }

    @RequiresApi(Build.VERSION_CODES.O)
-    fun update () {
-        val linkedAbstractProduct: AbstractProduct = abstractProductDAO.findAbstractProductById(product.abstractProductId) ?: return
+    private fun setUpClicks() {
+        productLayout.setOnLongClickListener { onAnyLongClick() }
+        productImageView.setOnLongClickListener { onImageLongClick() }
+        productNameTextView.setOnLongClickListener { onNameLongClick() }
+        productNetWeightTextView.setOnLongClickListener { onAnyLongClick() }
+        productAmountTextView.setOnLongClickListener { onAnyLongClick() }
+        productCategoryView.setOnLongClickListener { onAnyLongClick() }
+        productLifeSpan.setOnLongClickListener { onAnyLongClick() }
+        productFreshnessTextView.setOnLongClickListener { onAnyLongClick() }
+
+        productLayout.setOnClickListener { onAnyClick() }
+        productImageView.setOnClickListener { onImageLongClick() }
+        productNameTextView.setOnClickListener { onNameLongClick() }
+        productNetWeightTextView.setOnClickListener { onAnyClick() }
+        productAmountTextView.setOnClickListener { onAnyClick() }
+        productCategoryView.setOnClickListener { onAnyClick() }
+        productLifeSpan.setOnClickListener { onAnyClick() }
+        productFreshnessTextView.setOnClickListener { onAnyClick() }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun onAnyClick(): Boolean {
+        if (activity !is MainActivity) return false
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            isProductSelected = !isProductSelected
+
+            if (isProductSelected) mainActivity.addSelection()
+            else mainActivity.removeSelection()
+
+            updateStroke()
+
+            return true
+        } else {
+            return false
+        }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun onAnyLongClick(): Boolean {
+        if (activity !is MainActivity) return false
+        val mainActivity = activity as MainActivity
+
+        isProductSelected = !isProductSelected
+        updateStroke()
+
+        if (mainActivity.selectionMode) {
+            if (isProductSelected) mainActivity.addSelection()
+            else mainActivity.removeSelection()
+        } else {
+            mainActivity.addSelection()
+        }
+        return true
+
+    }
+
+    private fun onNameLongClick(): Boolean {
+        if (activity !is MainActivity) {
+            Toast.makeText(activity, productNameTextView.text, Toast.LENGTH_SHORT).show()
+            return true
+        }
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) return onAnyLongClick()
+        else Toast.makeText(activity, productNameTextView.text, Toast.LENGTH_SHORT).show()
+        return true
+    }
+
+    private fun onImageLongClick(): Boolean {
+        val abstractProduct = abstractProductDAO.findAbstractProductById(product.abstractProductId)
+
+        if (activity !is MainActivity) {
+            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
+            val extras = Bundle()
+            extras.putString("imagehash", abstractProduct!!.imageHash)
+            fullscreenIntent.putExtras(extras)
+            startActivity(context, fullscreenIntent, extras)
+            return true
+        }
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            return onAnyLongClick()
+        } else {
+            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
+            val extras = Bundle()
+            extras.putString("imagehash", abstractProduct!!.imageHash)
+            fullscreenIntent.putExtras(extras)
+            startActivity(context, fullscreenIntent, extras)
+        }
+        return true
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    fun update() {
+        val linkedAbstractProduct: AbstractProduct =
+            abstractProductDAO.findAbstractProductById(product.abstractProductId) ?: return

        val thumbnailsDir = File(activity.cacheDir, "thumbnails")
        thumbnailsDir.mkdirs()
        val pictureFile = File(thumbnailsDir, "${linkedAbstractProduct.imageHash}.webp")
        val imageUri = getImageUri(activity, pictureFile)
        productImageView.setImageURI(imageUri)
-//        productImageView.rotation = 90f

        productNameTextView.text = linkedAbstractProduct.name
        productNetWeightTextView.text = linkedAbstractProduct.netWeight.toString()
        productAmountTextView.text = product.amount.toString()
        productCategoryView.text = categoryDAO.getCategoryNameById(linkedAbstractProduct.category)
-        productLifeSpan.text = "${SimpleDateFormat("dd.MM.yyyy").format(Date(product.dateOfProduction*1000))}-${SimpleDateFormat("dd.MM.yyyy").format(Date(product.dateOfExpiry*1000))}"
+        productLifeSpan.text = "${SimpleDateFormat("dd.MM.yyyy").format(Date(product.dateOfProduction * 1000))}-${
+            SimpleDateFormat("dd.MM.yyyy").format(Date(product.dateOfExpiry * 1000))
+        }"
        productFreshnessTextView.text =
-        if (product.freshness == Double.NEGATIVE_INFINITY || product.freshness == Double.POSITIVE_INFINITY || product.freshness < 0) {
-            context.getString(R.string.expired)
-        } else {
-            "${DecimalFormat("#.#").format(product.freshness*100)}%"
-        }
+            if (product.freshness == Double.NEGATIVE_INFINITY || product.freshness == Double.POSITIVE_INFINITY || product.freshness < 0) {
+                context.getString(R.string.expired)
+            } else {
+                "${DecimalFormat("#.#").format(product.freshness * 100)}%"
+            }

        updateStroke()
    }

    @RequiresApi(Build.VERSION_CODES.O)
    fun updateStroke() {
-         if (isProductSelected) {
-             this.background = ContextCompat.getDrawable(context, R.drawable.outline_selected)
+        if (isProductSelected) {
+            this.background = ContextCompat.getDrawable(context, R.drawable.outline_selected)
        } else {
-             if (product.id != 0) {
-                 thread {
-                     this.outline = GradientDrawable()
-                     backgroundColor = evaluateColor()
-                     strokeColor = darkenColor(backgroundColor, 0.25) // (backgroundColor and 0xfefefe ) shr 1
-                     this.outline.setColor(backgroundColor)
-                     this.outline.setStroke(4, strokeColor)
-                     this.outline.alpha = 84
-                     this.background = outline
-                 }
-             } else {
-                 this.background = ContextCompat.getDrawable(context, R.drawable.outline)
-             }
+            if (product.id != 0) {
+                thread {
+                    this.outline = GradientDrawable()
+                    backgroundColor = evaluateColor()
+                    strokeColor = darkenColor(backgroundColor, 0.25) // (backgroundColor and 0xfefefe ) shr 1
+                    this.outline.setColor(backgroundColor)
+                    this.outline.setStroke(4, strokeColor)
+                    this.outline.alpha = 84
+                    this.background = outline
+                }
+            } else {
+                this.background = ContextCompat.getDrawable(context, R.drawable.outline)
+            }
        }
    }

@@ -178,13 +249,15 @@ class ProductView: LinearLayout {
    }

    fun calculateFreshnessGradient(percentage: Double): Int {
-        val startColor = ContextCompat.getColor(context, if (percentage > 0.5) R.color.full_freshness else R.color.half_freshness)
-        val endColor = ContextCompat.getColor(context, if (percentage > 0.5) R.color.half_freshness else R.color.expired_freshness)
+        val startColor =
+            ContextCompat.getColor(context, if (percentage > 0.5) R.color.full_freshness else R.color.half_freshness)
+        val endColor =
+            ContextCompat.getColor(context, if (percentage > 0.5) R.color.half_freshness else R.color.expired_freshness)

        val gradientPosition = 1 - if (percentage > 0.5) (percentage - 0.5) * 2 else percentage * 2

-        val red = clamp((startColor.red + gradientPosition * (endColor.red - startColor.red )).toInt(), 0, 255)
-        val green = clamp((startColor.green  + gradientPosition * (endColor.green - startColor.green)).toInt(), 0, 255)
+        val red = clamp((startColor.red + gradientPosition * (endColor.red - startColor.red)).toInt(), 0, 255)
+        val green = clamp((startColor.green + gradientPosition * (endColor.green - startColor.green)).toInt(), 0, 255)
        val blue = clamp((startColor.blue + gradientPosition * (endColor.blue - startColor.blue)).toInt(), 0, 255)

        var redHex = Integer.toHexString(red)
@@ -194,7 +267,7 @@ class ProductView: LinearLayout {
        if (greenHex.length == 1) greenHex = "0$greenHex"

        var blueHex = Integer.toHexString(blue)
-        if (blueHex.length == 1 ) blueHex = "0$blueHex"
+        if (blueHex.length == 1) blueHex = "0$blueHex"


        val colorString = "#$redHex$greenHex$blueHex"
@@ -202,7 +275,7 @@ class ProductView: LinearLayout {
    }

    @RequiresApi(Build.VERSION_CODES.O)
-    fun darkenColor(color: Int, darkPercent: Double) : Int {
+    fun darkenColor(color: Int, darkPercent: Double): Int {
        val c = Color.valueOf(color)

        val red = c.red() * (1 - darkPercent)
--- a/app/src/main/res/layout/abstract_product_view.xml
+++ b/app/src/main/res/layout/abstract_product_view.xml
@@ -8,7 +8,7 @@
    <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent" android:id="@+id/productLayout" android:outlineProvider="bounds"
-            android:background="#00FFFEFE" android:clickable="true">
+            android:background="#00FFFEFE" android:clickable="true" android:translationZ="0sp">
        <ImageView
                android:layout_width="match_parent"
                android:layout_height="200dp" app:srcCompat="@android:drawable/ic_menu_gallery"