reduced MainActivity LOC to under 200, but more work needs to be done on 'ui/drawer/DrawerFunctions.java' to close #35

app/src/main/java/com/noahvogt/snailmail/MainActivity.java

@@ -1,67 +1,45 @@
 package com.noahvogt.snailmail;
 
-import android.app.Activity;
-import android.content.Context;
-import android.content.DialogInterface;
+import static com.noahvogt.snailmail.R.id.drawer_layout;
+
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
-import android.widget.ArrayAdapter;
-import android.widget.AutoCompleteTextView;
 import android.widget.Button;
-import android.widget.EditText;
-import android.widget.TextView;
-import android.widget.Toast;
 
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
 import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.fragment.app.DialogFragment;
-
-
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
-import com.google.gson.reflect.TypeToken;
-import com.noahvogt.snailmail.database.Message;
-
 import androidx.lifecycle.ViewModelProvider;
-import androidx.navigation.fragment.NavHostFragment;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.RecyclerView;
-
-
-import com.google.android.material.navigation.NavigationView;
-
 import androidx.navigation.NavController;
 import androidx.navigation.Navigation;
+import androidx.navigation.fragment.NavHostFragment;
 import androidx.navigation.ui.AppBarConfiguration;
 import androidx.navigation.ui.NavigationUI;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
 import com.chaquo.python.Python;
 import com.chaquo.python.android.AndroidPlatform;
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import com.google.android.material.navigation.NavigationView;
 import com.noahvogt.snailmail.data.CustomAdapter;
 import com.noahvogt.snailmail.data.EmailViewModel;
-import com.noahvogt.snailmail.data.MailFunctions;
-import com.noahvogt.snailmail.data.MailServerCredentials;
+import com.noahvogt.snailmail.database.Message;
+import com.noahvogt.snailmail.ui.drawer.DrawerFunctions;
+import com.noahvogt.snailmail.ui.editor.EditorFragment;
+import com.noahvogt.snailmail.ui.reader.ReaderFragment;
 import com.noahvogt.snailmail.ui.settings.SettingsActivity;
 import com.noahvogt.snailmail.workers.DownloadWorker;
-import com.noahvogt.snailmail.ui.reader.ReaderFragment;
-import com.noahvogt.snailmail.ui.editor.EditorFragment;
 
-import java.lang.reflect.Type;
 import java.text.SimpleDateFormat;
-import java.util.ArrayList;
 import java.util.Date;
 
-import com.google.gson.Gson;
-
-
-
-import static com.noahvogt.snailmail.R.id.drawer_layout;
-
 public class MainActivity extends AppCompatActivity implements View.OnClickListener, CustomAdapter.SelectedMessage {
 
     private AppBarConfiguration mAppBarConfiguration;
@@ -74,9 +52,6 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
     public static String userGlobal;
     public static boolean isDownloading = false;
 
-    private AlertDialog dialog;
-    private EditText newEmailName, newEmailAddress, newEmailPassword; /* may not be private */
-
     SharedPreferences mailServerCredentials;
 
     @Override
@@ -84,6 +59,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main_activity);
 
+        DrawerFunctions drawerFunctions = new DrawerFunctions();
 
         /* invoke toolbar */
         Toolbar toolbar = findViewById(R.id.toolbar);
@@ -105,167 +81,12 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         final NavHostFragment navHostFragment = (NavHostFragment) getSupportFragmentManager().findFragmentById(R.id.nav_host_fragment);
         assert navHostFragment != null;
         final NavController navController = navHostFragment.getNavController();
-        //NavController navController = Navigation.findNavController(MainActivity.this, R.id.nav_host_fragment);
         NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
         NavigationUI.setupWithNavController(navigationView, navController);
 
-        /* show account manager when clicking on profile */
-        View accountView = findViewById(R.id.accountView);
-        accountView.setOnClickListener(onClickView -> {
-            /* define dialog */
-            AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(MainActivity.this);
-            final View accountManagerView = getLayoutInflater().inflate(R.layout.account_manager, null);
-
-            AutoCompleteTextView accountSelectorObject = (AutoCompleteTextView) accountManagerView.findViewById(R.id.accountSelectorTextView);
-
-            /* get string data for drop down menu */
-            SharedPreferences credReader = getSharedPreferences("Credentials", Context.MODE_PRIVATE);
-            String currentUser = credReader.getString("currentUser", "");
-
-            TextView showCurrentUserObject = (TextView) accountManagerView.findViewById(R.id.showCurrentUser);
-            Button switchAccountObject = (Button) accountManagerView.findViewById(R.id.switchToAccountButton);
-            Button deleteAccountObject = (Button) accountManagerView.findViewById(R.id.deleteAccountButton);
-            Button changeServerSettingsObject = (Button) accountManagerView.findViewById(R.id.changeServerSettingsButton);
-            Button exit = (Button) accountManagerView.findViewById(R.id.exitButton);
-
-            if (currentUser == null) {
-                showCurrentUserObject.setText("current user:\nNone");
-            } else {
-                showCurrentUserObject.setText(String.format("current user:\n%s", currentUser));
-                userGlobal = currentUser;
-            }
-
-            SharedPreferences.Editor credEditor = credReader.edit();
-
-            Gson gson = new Gson();
-
-            String jsonCredData = credReader.getString("data", "");
-            Type credentialsType = new TypeToken<ArrayList<MailServerCredentials>>() {
-            }.getType();
-            ArrayList<MailServerCredentials> currentUsersCredentials = gson.fromJson(jsonCredData, credentialsType);
-            String[] userArray = new String[0];
-            try {
-                if (!currentUsersCredentials.isEmpty()) {
-                    userArray = new String[currentUsersCredentials.size()];
-                    for (int i = 0; i < currentUsersCredentials.size(); i++) {
-                        userArray[i] = currentUsersCredentials.get(i).getUsername();
-                    }
-                }
-            } catch (NullPointerException ignored) {}
-
-            ArrayAdapter<String> dropDownAdapter = new ArrayAdapter<>(getApplicationContext(), R.layout.dropdown_item,
-                    R.id.textViewDropDownItem, userArray);
-            accountSelectorObject.setAdapter(dropDownAdapter);
-
-            /* open dialog */
-            dialogBuilder.setView(accountManagerView);
-            AlertDialog rootAccountManagerDialog = dialogBuilder.create();
-            rootAccountManagerDialog.show();
-
-            switchAccountObject.setOnClickListener(view -> {
-                String userInput = accountSelectorObject.getText().toString();
-                String jsonCredData1 = credReader.getString("data", "");
-                Type credentialsType1 = new TypeToken<ArrayList<MailServerCredentials>>(){}.getType();
-                ArrayList<MailServerCredentials> currentUsersCredentials1 = gson.fromJson(jsonCredData1, credentialsType1);
-
-
-                try {
-                    for (int i = 0; i < currentUsersCredentials1.size(); i++) {
-                        if (currentUsersCredentials1.get(i).getUsername().equals(userInput)) {
-                            credEditor.putString("currentUser", userInput).apply();
-                            userGlobal = userInput;
-                            showCurrentUserObject.setText(String.format("current user:\n%s", userInput));
-                            showToast("Switched account");
-                            updateNavHeaderText(headerView);
-                            break;
-                        }
-                    }
-                } catch (NullPointerException ignored) {}
-            });
-
-            /* needed to use array in inner method later */
-            String[] finalUserArray = userArray;
-
-            deleteAccountObject.setOnClickListener(view -> {
-                String userInput = accountSelectorObject.getText().toString();
-                String jsonCredData12 = credReader.getString("data", "");
-                Type credentialsType12 = new TypeToken<ArrayList<MailServerCredentials>>() {
-                }.getType();
-                ArrayList<MailServerCredentials> currentUserCredentials = gson.fromJson(jsonCredData12, credentialsType12);
-
-                try {
-                    for (int i = 0; i < currentUserCredentials.size(); i++) {
-                        if (currentUserCredentials.get(i).getUsername().equals(userInput)) {
-                            currentUserCredentials.remove(i);
-
-                            /* live update adapter for dropdown menu */
-                            int k = 0;
-                            String[] newUserArray = new String[finalUserArray.length - 1];
-                            for (String s : finalUserArray) {
-                                if (!s.contains(userInput)) {
-                                    newUserArray[k] = s;
-                                    k++;
-                                }
-                            }
-
-                            ArrayAdapter<String> newDropDownAdapter = new ArrayAdapter<>(MainActivity.this.getApplicationContext(),
-                                    R.layout.dropdown_item, R.id.textViewDropDownItem, newUserArray);
-                            accountSelectorObject.setAdapter(newDropDownAdapter);
-
-                            showCurrentUserObject.setText(R.string.NoEmailsInDropDownMenuAvailable);
-
-                            /* update credentials strings */
-                            credEditor.putString("data", gson.toJson(currentUserCredentials, credentialsType12)).apply();
-                            if (!currentUserCredentials.isEmpty()) {
-                                String usernameZero = currentUserCredentials.get(0).getUsername();
-                                credEditor.putString("currentUser", usernameZero).apply();
-                                showCurrentUserObject.setText(String.format("current user:\n%s", usernameZero));
-                                userGlobal = usernameZero;
-                            } else {
-                                credEditor.putString("currentUser", "").apply();
-                                showCurrentUserObject.setText("current user:\n None");
-                                userGlobal = null;
-                            }
-                            MainActivity.this.showToast("Account removed");
-                            MainActivity.this.updateNavHeaderText(headerView);
-                            break;
-                        }
-                    }
-                } catch (NullPointerException ignored) {
-                }
-            });
-
-            changeServerSettingsObject.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View view) {
-                    String userInput = accountSelectorObject.getText().toString();
-                    String jsonCredData = credReader.getString("data", "");
-                    Type credentialsType = new TypeToken<ArrayList<MailServerCredentials>>() {
-                    }.getType();
-                    ArrayList<MailServerCredentials> currentUserCredentials = gson.fromJson(jsonCredData, credentialsType);
-
-                    String email, name, password, smtpHost, imapHost = null;
-                    int smtpPort, imapPort = 0;
-                    try {
-                        for (int i = 0; i < currentUserCredentials.size(); i++) {
-                            if (currentUserCredentials.get(i).getUsername().equals(userInput)) {
-                                email = currentUserCredentials.get(i).getUsername();
-                                name = currentUserCredentials.get(i).getName();
-                                password = currentUserCredentials.get(i).getPassword();
-                                smtpHost = currentUserCredentials.get(i).getSmtpHost();
-                                imapHost = currentUserCredentials.get(i).getImapHost();
-                                smtpPort = currentUserCredentials.get(i).getSmtpPort();
-                                imapPort = currentUserCredentials.get(i).getImapPort();
-                                changeMailServerSettingsDialog(name, email, password, headerView, imapHost, smtpHost, imapPort,
-                                        smtpPort, false);
-                                break;
-                            }
-                        }
-                    } catch (NullPointerException ignored) {}
-                }
-            });
-
-            exit.setOnClickListener(v -> rootAccountManagerDialog.dismiss());
+        View accountViewOnProfileClick = findViewById(R.id.accountView);
+        accountViewOnProfileClick.setOnClickListener(onClickView -> {
+            drawerFunctions.accountManagerViewHandler(MainActivity.this, getLayoutInflater(), headerView, mailServerCredentials);
         });
 
 
@@ -285,7 +106,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
             adapter.submitList(messages);
         });
 
-        updateNavHeaderText(headerView);
+        drawerFunctions.updateNavHeaderText(headerView, getApplicationContext());
 
         Button settingButton = findViewById(R.id.settingsButton);
         settingButton.setOnClickListener(v -> {
@@ -297,20 +118,15 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
         Button add_email_button = (Button) findViewById(R.id.addEmailButton);
         add_email_button.setOnClickListener(v -> {
             if (!clicked[0]){
-
-                createInformation(true,headerView);
+                drawerFunctions.newUserAlphaSoftwareWarningBeforeAddingEmail(true, headerView, MainActivity.this, getLayoutInflater());
                 clicked[0] = true;
-
-
             } else {
-                createNewEmailDialog(headerView);
+                drawerFunctions.createNewEmailDialog(headerView, getLayoutInflater(), MainActivity.this);
             }
         });
 
-
-        /* Start email Writer*/
-        FloatingActionButton message_create_button = findViewById(R.id.messageButton);
-        message_create_button.setOnClickListener(v -> {
+        FloatingActionButton messageCreateButton = findViewById(R.id.messageButton);
+        messageCreateButton.setOnClickListener(v -> {
             DialogFragment dialogFragment = EditorFragment.newInstance();
             dialogFragment.show(getSupportFragmentManager(), "tag");
         });
@@ -327,10 +143,9 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
 
             /* Creates class for the Date when Email is written */
             Date dNow = new Date();
-            SimpleDateFormat ft =
-                    new SimpleDateFormat("dd.MM.yy");
+            SimpleDateFormat ft = new SimpleDateFormat("dd.MM.yy");
 
-                Message word = new Message(userGlobal,
+            Message word = new Message(userGlobal,
                         EditorFragment.replyIntent.getStringExtra(EditorFragment.EXTRA_TO),
                         EditorFragment.replyIntent.getStringExtra(EditorFragment.EXTRA_CC),
                         EditorFragment.replyIntent.getStringExtra(EditorFragment.EXTRA_BCC),
@@ -342,35 +157,6 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
                 mEmailViewModel.insert(word);
         }
 
-    /* set nav header name + email to current user data */
-    public void updateNavHeaderText(View headerView) {
-        mailServerCredentials = getSharedPreferences("Credentials", Context.MODE_PRIVATE);
-
-        TextView navHeaderNameObject = (TextView) headerView.findViewById(R.id.navHeaderName);
-        TextView navHeaderEmailObject = (TextView) headerView.findViewById(R.id.navHeaderEmail);
-
-        String startupUser = mailServerCredentials.getString("currentUser","");
-
-        if (!startupUser.isEmpty()) {
-            Gson gson = new Gson();
-
-            String startupJsonData = mailServerCredentials.getString("data", "");
-            Type credentialsType = new TypeToken<ArrayList<MailServerCredentials>>(){}.getType();
-            ArrayList<MailServerCredentials> startupUsersCredentials = gson.fromJson(startupJsonData, credentialsType);
-
-            for (int i = 0; i < startupUsersCredentials.size(); i++) {
-                if (startupUsersCredentials.get(i).getUsername().equals(startupUser)) {
-                    navHeaderNameObject.setText(startupUser);
-                    navHeaderEmailObject.setText(startupUsersCredentials.get(i).getName());
-                    break;
-                }
-            }
-        } else {
-            navHeaderEmailObject.setText(R.string.noAccountsAddedNavHeaderMessageEmail);
-            navHeaderNameObject.setText(R.string.noAccountsAddedNavHeaderMessageName);
-        }
-    }
-
 
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
@@ -387,250 +173,9 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
                 || super.onSupportNavigateUp();
     }
 
-
     /* better leave empty to avoid any listener disambiguity */
     public void onClick(View view) {}
 
-    public void changeMailServerSettingsDialog(String name, String email, String password, View headerView, String imapHost,
-                                               String smtpHost, int imapPort, int smtpPort, boolean wantToAddNew) {
-        /* define View window */
-        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
-        final View changeMailServerSettingsView = getLayoutInflater().inflate(R.layout.mail_credentials_customizer, null);
-
-        /* access objects */
-        EditText incomingServerObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_incoming_server_text);
-        EditText outgoingServerObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_outgoing_server_text);
-        EditText incomingPortObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_incoming_port_text);
-        EditText outgoingPortObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_outgoing_port_text);
-        EditText serverUsernameObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_username_text);
-        EditText passwordObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_password_text);
-        Button saveButton = (Button) changeMailServerSettingsView.findViewById(R.id.saveCustomizeButton);
-        Button cancelButton = (Button) changeMailServerSettingsView.findViewById(R.id.cancelCustomizeButton);
-
-        /* set assumed input in corresponding fields */
-        incomingServerObject.setText(imapHost);
-        outgoingServerObject.setText(smtpHost);
-        incomingPortObject.setText(String.valueOf(imapPort));
-        outgoingPortObject.setText(String.valueOf(smtpPort));
-        serverUsernameObject.setText(email);
-        passwordObject.setText(password);
-
-        /* open View window */
-        dialogBuilder.setView(changeMailServerSettingsView);
-        AlertDialog rootChangeServerSettingsDialog = dialogBuilder.create();
-        rootChangeServerSettingsDialog.show();
-
-        saveButton.setOnClickListener(view -> {
-            if (wantToAddNew) {
-                addNewAccountCredentials(name, serverUsernameObject.getText().toString(), passwordObject.getText().toString(),
-                        Integer.parseInt(incomingPortObject.getText().toString()), Integer.parseInt(outgoingPortObject.getText().toString()),
-                        incomingServerObject.getText().toString(), outgoingServerObject.getText().toString(), rootChangeServerSettingsDialog, false,
-                        headerView);
-            } else {
-                changeAccountCredentials(name, serverUsernameObject.getText().toString(),
-                        passwordObject.getText().toString(), Integer.parseInt(incomingPortObject.getText().toString()),
-                        Integer.parseInt(outgoingPortObject.getText().toString()), incomingServerObject.getText().toString(),
-                        outgoingServerObject.getText().toString(), rootChangeServerSettingsDialog, headerView, email);
-            }
-        });
-
-        cancelButton.setOnClickListener(v -> rootChangeServerSettingsDialog.dismiss());
-    }
-
-    public void askForChangeMailServerSettingsDialog(String name, String email, String password, View headerView) {
-        /* define View window */
-        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
-
-        /* open View window */
-        dialogBuilder.setTitle("failed to connect :(");
-        dialogBuilder
-                .setMessage("Do you want to further customize your mail server settings?")
-                .setPositiveButton("Yes", (dialog, id) -> {
-                    /*if this button is clicked, close the whole fragment */
-                    changeMailServerSettingsDialog(name, email, password, headerView,
-                            MailFunctions.getImapHostFromEmail(email), MailFunctions.getSmtpHostFromEmail(email), 993, 587,
-                            true);
-                })
-                .setNegativeButton("No", (dialogInput, id) -> {
-                    /* if this button is clicked, close the hole fragment */
-                    dialogInput.dismiss();
-                });
-        AlertDialog rootAskForChangeServerDialog = dialogBuilder.create();
-        rootAskForChangeServerDialog.show();
-    }
-
-    public void createInformation(boolean button, View view){
-        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(MainActivity.this);
-        final View emailPopupView = getLayoutInflater().inflate(R.layout.new_user_welcome_message, null);
-
-        /* init text field variables */
-        TextView shedText = emailPopupView.findViewById(R.id.background);
-        Button okayButton = emailPopupView.findViewById(R.id.okay_button);
-
-        /* open View window */
-        dialogBuilder.setView(emailPopupView);
-        dialog = dialogBuilder.create();
-        dialog.show();
-
-        okayButton.setOnClickListener(v -> {
-            dialog.dismiss();
-            if (view!=null) {
-                if (button) {
-                    createNewEmailDialog(view);
-                }
-            }
-        });
-    }
-
-    public static MailServerCredentials newMailServerCredentials;
-    public static SharedPreferences.Editor credentialsEditor;
-
-    public boolean addNewAccountCredentials(String name, String email, String password, int imapPort,
-                                         int smtpPort, String imapHost, String smtpHost, DialogInterface dialogContext,
-                                         boolean wantConnectionFailedDialog, View headerView) {
-        credentialsEditor = mailServerCredentials.edit();
-
-        /* connect to mail server */
-        showToast("Probe Connection ...");
-        if (MailFunctions.canConnect(imapHost, email, password) == Boolean.TRUE) {
-            showToast("Was able to connect");
-
-            Gson gson = new Gson();
-
-            /* read login credentials from SharedPreferences */
-            SharedPreferences initialCredentialsReader = getSharedPreferences(
-                    "Credentials", Context.MODE_PRIVATE);
-            String initialReadJsonData = initialCredentialsReader.getString("data", "");
-            Type credentialsType = new TypeToken<ArrayList<MailServerCredentials>>(){}.getType();
-            ArrayList<MailServerCredentials> allUsersCredentials = gson.fromJson(initialReadJsonData, credentialsType);
-
-            /* check for unique email */
-            boolean newEmailIsUnique = true;
-            try {
-                for (int i = 0; i < allUsersCredentials.size(); i++) {
-                    if (allUsersCredentials.get(i).getUsername().equals(email)) {
-                        newEmailIsUnique = false;
-                        break;
-                    }
-                }
-            } catch (NullPointerException e) {
-                System.out.println("creating new arraylist for user credentials, as it seems to be empty");
-                allUsersCredentials = new ArrayList<>();
-            }
-
-            /* add new email account if the email hasn't been entered before */
-            if (newEmailIsUnique) {
-                allUsersCredentials.add(new MailServerCredentials(name, email, password, imapHost, smtpHost, imapPort,
-                        smtpPort, ""));
-                credentialsEditor.putString("data", gson.toJson(allUsersCredentials, credentialsType));
-                credentialsEditor.putString("currentUser", email);
-                credentialsEditor.apply();
-                updateNavHeaderText(headerView);
-                dialogContext.dismiss();
-                return true;
-            } else {
-                showToast("You cannot add the same email twice");
-                return false;
-            }
-        } else {
-            if (wantConnectionFailedDialog) {
-                askForChangeMailServerSettingsDialog(name, email, password, headerView);
-            } else {
-                showToast("Failed to get connection");
-                return false;
-            }
-        }
-        return false;
-    }
-
-    /* use 'initialMail' variable so that the program knows which email entry is has to change */
-    public void changeAccountCredentials(String name, String email, String password, int imapPort,
-                                         int smtpPort, String imapHost, String smtpHost, DialogInterface dialogContext,
-                                         View headerView, String initialEmail) {
-        credentialsEditor = mailServerCredentials.edit();
-
-        /* connect to mail server */
-        showToast("Probe Connection ...");
-        if (MailFunctions.canConnect(imapHost, email, password) == Boolean.TRUE) {
-            showToast("Was able to connect");
-
-            Gson gson = new Gson();
-
-            /* read login credentials from SharedPreferences */
-            SharedPreferences initialCredentialsReader = getSharedPreferences(
-                    "Credentials", Context.MODE_PRIVATE);
-            String initialReadJsonData = initialCredentialsReader.getString("data", "");
-            Type credentialsType = new TypeToken<ArrayList<MailServerCredentials>>(){}.getType();
-            ArrayList<MailServerCredentials> allUsersCredentials = gson.fromJson(initialReadJsonData, credentialsType);
-
-            for (int i = 0; i < allUsersCredentials.size(); i++) {
-                if (allUsersCredentials.get(i).getUsername().equals(initialEmail)) {
-                    String signature = allUsersCredentials.get(i).getSignature();
-                    allUsersCredentials.set(i, new MailServerCredentials(name, email, password, imapHost, smtpHost, imapPort,
-                            smtpPort, signature));
-                    credentialsEditor.putString("data", gson.toJson(allUsersCredentials, credentialsType)).apply();
-                    dialogContext.dismiss();
-                    break;
-                }
-            }
-        } else {
-                showToast("Failed to get connection");
-        }
-    }
-
-    public void createNewEmailDialog(View headerView){
-        /* define View window */
-        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
-        final View emailPopupView = getLayoutInflater().inflate(R.layout.add_email_popup, null);
-
-        /* init text field variables */
-        newEmailName = emailPopupView.findViewById(R.id.popup_material_name_asking_text);
-        newEmailAddress = emailPopupView.findViewById(R.id.popup_material_email_asking_text);
-        newEmailPassword = emailPopupView.findViewById(R.id.popup_material_password_asking_text);
-
-        /* init button variables */
-        Button newEmailSaveButton = (Button) emailPopupView.findViewById(R.id.saveButton);
-        /* may not be private */
-        Button newEmailCancelButton = (Button) emailPopupView.findViewById(R.id.cancelButton);
-
-
-        /* open View window */
-        dialogBuilder.setView(emailPopupView);
-        AlertDialog rootCreateNewEmailPopupDialog = dialogBuilder.create();
-        rootCreateNewEmailPopupDialog.show();
-
-        credentialsEditor = mailServerCredentials.edit();
-
-        /* store user input */
-        newEmailSaveButton.setOnClickListener(v -> {
-            /* store user input */
-            String name = newEmailName.getText().toString();
-            String email = newEmailAddress.getText().toString();
-            String password = newEmailPassword.getText().toString();
-
-            if (!MailFunctions.validateEmail(newEmailAddress) | !MailFunctions.validateName(newEmailName) | !MailFunctions.validatePassword(newEmailPassword)) {
-                return;
-            }
-
-            boolean connection = addNewAccountCredentials(name, email, password, 993, 587, MailFunctions.getImapHostFromEmail(email),
-                    MailFunctions.getSmtpHostFromEmail(email), rootCreateNewEmailPopupDialog, true, headerView);
-            if (connection) {
-                showToast("Downloading messages");
-                mEmailViewModel.applyDownload();
-                userGlobal = email;
-            }
-            dialog.dismiss();
-    });
-
-        newEmailCancelButton.setOnClickListener(v -> rootCreateNewEmailPopupDialog.dismiss());
-    }
-
-    /* print relatively globally messages at the bottom of the screen */
-    private void showToast(String text) {
-        Toast.makeText(MainActivity.this, text, Toast.LENGTH_SHORT).show();
-    }
-
-
     @Override
     public void selectedMessage(Message messages, EmailViewModel emailViewModel) {
         DialogFragment dialog = ReaderFragment.newInstance(messages, mEmailViewModel);
@@ -641,23 +186,7 @@ public class MainActivity extends AppCompatActivity implements View.OnClickListe
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()){
-            case R.id.action_information:
-                createInformation(false,null);
-                return true;
-            case R.id.action_refresh:
-                showToast("Refreshing");
-                mEmailViewModel.applyDownload();
-                return true;
-            case R.id.action_deletefolder:
-                showToast("Deleting all folders");
-                for (int delete = 0; delete < mEmailViewModel.getAll(false).size(); delete++){
-                    mEmailViewModel.deleteMessage(mEmailViewModel.getAll(false).get(delete));
-                }
-                mEmailViewModel.getAll(true);
-
-                return true;
-        }
-        return false;
+        DrawerFunctions drawerFunctions = new DrawerFunctions();
+        return drawerFunctions.handleMasterDotsMenu(item, MainActivity.this, getLayoutInflater());
     }
 }

app/src/main/java/com/noahvogt/snailmail/ui/drawer/DrawerFunctions.java

@@ -0,0 +1,470 @@
+package com.noahvogt.snailmail.ui.drawer;
+
+import static com.noahvogt.snailmail.MainActivity.mEmailViewModel;
+import static com.noahvogt.snailmail.MainActivity.userGlobal;
+
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.SharedPreferences;
+import android.view.LayoutInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.AutoCompleteTextView;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.appcompat.app.AlertDialog;
+
+import com.google.gson.Gson;
+import com.google.gson.reflect.TypeToken;
+import com.noahvogt.snailmail.R;
+import com.noahvogt.snailmail.data.MailFunctions;
+import com.noahvogt.snailmail.data.MailServerCredentials;
+
+import java.lang.reflect.Type;
+import java.util.ArrayList;
+
+public class DrawerFunctions {
+
+    public void changeMailServerSettingsDialog(String name, String email, String password, View headerView, String imapHost, String smtpHost,
+                                               int imapPort, int smtpPort, boolean wantToAddNew, LayoutInflater layoutInflater, Context context,
+                                               SharedPreferences mailServerCredentials) {
+        /* define View window */
+        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(context);
+        final View changeMailServerSettingsView = layoutInflater.inflate(R.layout.mail_credentials_customizer, null);
+
+        /* access objects */
+        EditText incomingServerObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_incoming_server_text);
+        EditText outgoingServerObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_outgoing_server_text);
+        EditText incomingPortObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_incoming_port_text);
+        EditText outgoingPortObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_outgoing_port_text);
+        EditText serverUsernameObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_username_text);
+        EditText passwordObject = (EditText) changeMailServerSettingsView.findViewById(R.id.custom_mail_server_password_text);
+        Button saveButton = (Button) changeMailServerSettingsView.findViewById(R.id.saveCustomizeButton);
+        Button cancelButton = (Button) changeMailServerSettingsView.findViewById(R.id.cancelCustomizeButton);
+
+        /* set assumed input in corresponding fields */
+        incomingServerObject.setText(imapHost);
+        outgoingServerObject.setText(smtpHost);
+        incomingPortObject.setText(String.valueOf(imapPort));
+        outgoingPortObject.setText(String.valueOf(smtpPort));
+        serverUsernameObject.setText(email);
+        passwordObject.setText(password);
+
+        /* open View window */
+        dialogBuilder.setView(changeMailServerSettingsView);
+        AlertDialog rootChangeServerSettingsDialog = dialogBuilder.create();
+        rootChangeServerSettingsDialog.show();
+
+        saveButton.setOnClickListener(view -> {
+            if (wantToAddNew) {
+                addNewAccountCredentials(name, serverUsernameObject.getText().toString(), passwordObject.getText().toString(),
+                        Integer.parseInt(incomingPortObject.getText().toString()), Integer.parseInt(outgoingPortObject.getText().toString()),
+                        incomingServerObject.getText().toString(), outgoingServerObject.getText().toString(), rootChangeServerSettingsDialog, false,
+                        headerView, mailServerCredentials, context, layoutInflater);
+            } else {
+                changeAccountCredentials(name, serverUsernameObject.getText().toString(), passwordObject.getText().toString(),
+                        Integer.parseInt(incomingPortObject.getText().toString()), Integer.parseInt(outgoingPortObject.getText().toString()),
+                        incomingServerObject.getText().toString(), outgoingServerObject.getText().toString(), rootChangeServerSettingsDialog,
+                        headerView, email, mailServerCredentials, context);
+            }
+        });
+
+        cancelButton.setOnClickListener(v -> rootChangeServerSettingsDialog.dismiss());
+    }
+
+    public boolean addNewAccountCredentials(String name, String email, String password, int imapPort, int smtpPort, String imapHost, String smtpHost,
+                                            DialogInterface dialogContext, boolean wantConnectionFailedDialog, View headerView,
+                                            SharedPreferences mailServerCredentials, Context context, LayoutInflater layoutInflater) {
+
+        SharedPreferences.Editor credentialsEditor = mailServerCredentials.edit();
+
+        /* connect to mail server */
+        Toast.makeText(context, "Probe Connection", Toast.LENGTH_SHORT).show();
+        if (MailFunctions.canConnect(imapHost, email, password) == Boolean.TRUE) {
+            Toast.makeText(context, "Was able to connect", Toast.LENGTH_LONG).show();
+
+            Gson gson = new Gson();
+
+            /* read login credentials from SharedPreferences */
+            SharedPreferences initialCredentialsReader = context.getSharedPreferences("Credentials", Context.MODE_PRIVATE);
+            String initialReadJsonData = initialCredentialsReader.getString("data", "");
+            Type credentialsType = new TypeToken<ArrayList<MailServerCredentials>>() {
+            }.getType();
+            ArrayList<MailServerCredentials> allUsersCredentials = gson.fromJson(initialReadJsonData, credentialsType);
+
+            /* check for unique email */
+            boolean newEmailIsUnique = true;
+            try {
+                for (int i = 0; i < allUsersCredentials.size(); i++) {
+                    if (allUsersCredentials.get(i).getUsername().equals(email)) {
+                        newEmailIsUnique = false;
+                        break;
+                    }
+                }
+            } catch (NullPointerException e) {
+                System.out.println("creating new arraylist for user credentials, as it seems to be empty");
+                allUsersCredentials = new ArrayList<>();
+            }
+
+            /* add new email account if the email hasn't been entered before */
+            if (newEmailIsUnique) {
+                allUsersCredentials.add(new MailServerCredentials(name, email, password, imapHost, smtpHost, imapPort,
+                        smtpPort, ""));
+                credentialsEditor.putString("data", gson.toJson(allUsersCredentials, credentialsType));
+                credentialsEditor.putString("currentUser", email);
+                credentialsEditor.apply();
+                updateNavHeaderText(headerView, context);
+                dialogContext.dismiss();
+                return true;
+            } else {
+                Toast.makeText(context, "You cannot add the same email twice", Toast.LENGTH_SHORT).show();
+                return false;
+            }
+        } else {
+            if (wantConnectionFailedDialog) {
+                askForChangeMailServerSettingsDialog(name, email, password, headerView, layoutInflater, context, mailServerCredentials);
+            } else {
+                Toast.makeText(context, "Failed to get connection", Toast.LENGTH_SHORT).show();
+                return false;
+            }
+        }
+        return false;
+    }
+
+    public void askForChangeMailServerSettingsDialog(String name, String email, String password, View headerView, LayoutInflater layoutInflater,
+                                                     Context context, SharedPreferences mailServerCredentials) {
+        /* define View window */
+        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(context);
+
+        /* open View window */
+        dialogBuilder.setTitle("failed to connect :(");
+        dialogBuilder
+                .setMessage("Do you want to further customize your mail server settings?")
+                .setPositiveButton("Yes", (dialog, id) -> {
+                    /*if this button is clicked, close the whole fragment */
+                    changeMailServerSettingsDialog(name, email, password, headerView,
+                            MailFunctions.getImapHostFromEmail(email), MailFunctions.getSmtpHostFromEmail(email), 993, 587,
+                            true, layoutInflater, context, mailServerCredentials);
+                })
+                .setNegativeButton("No", (dialogInput, id) -> {
+                    /* if this button is clicked, close the hole fragment */
+                    dialogInput.dismiss();
+                });
+        AlertDialog rootAskForChangeServerDialog = dialogBuilder.create();
+        rootAskForChangeServerDialog.show();
+    }
+
+    /* set nav header name + email to current user data */
+    public void updateNavHeaderText(View headerView, Context context) {
+        SharedPreferences mailServerCredentials = context.getSharedPreferences("Credentials", Context.MODE_PRIVATE);
+
+        TextView navHeaderNameObject = (TextView) headerView.findViewById(R.id.navHeaderName);
+        TextView navHeaderEmailObject = (TextView) headerView.findViewById(R.id.navHeaderEmail);
+
+        String startupUser = mailServerCredentials.getString("currentUser", "");
+
+        if (!startupUser.isEmpty()) {
+            Gson gson = new Gson();
+
+            String startupJsonData = mailServerCredentials.getString("data", "");
+            Type credentialsType = new TypeToken<ArrayList<MailServerCredentials>>() {
+            }.getType();
+            ArrayList<MailServerCredentials> startupUsersCredentials = gson.fromJson(startupJsonData, credentialsType);
+
+            for (int i = 0; i < startupUsersCredentials.size(); i++) {
+                if (startupUsersCredentials.get(i).getUsername().equals(startupUser)) {
+                    navHeaderNameObject.setText(startupUser);
+                    navHeaderEmailObject.setText(startupUsersCredentials.get(i).getName());
+                    break;
+                }
+            }
+        } else {
+            navHeaderEmailObject.setText(R.string.noAccountsAddedNavHeaderMessageEmail);
+            navHeaderNameObject.setText(R.string.noAccountsAddedNavHeaderMessageName);
+        }
+    }
+
+    /* use 'initialMail' variable so that the program knows which email entry is has to change */
+    public void changeAccountCredentials(String name, String email, String password, int imapPort, int smtpPort, String imapHost,
+                                         String smtpHost, DialogInterface dialogContext, View headerView, String initialEmail,
+                                         SharedPreferences mailServerCredentials, Context context) {
+        SharedPreferences.Editor credentialsEditor = mailServerCredentials.edit();
+
+        /* connect to mail server */
+        Toast.makeText(context, "Probe Connection ...", Toast.LENGTH_SHORT).show();
+        if (MailFunctions.canConnect(imapHost, email, password) == Boolean.TRUE) {
+            Toast.makeText(context, "Was able to connect", Toast.LENGTH_SHORT).show();
+
+            Gson gson = new Gson();
+
+            /* read login credentials from SharedPreferences */
+            SharedPreferences initialCredentialsReader = context.getSharedPreferences("Credentials", Context.MODE_PRIVATE);
+            String initialReadJsonData = initialCredentialsReader.getString("data", "");
+            Type credentialsType = new TypeToken<ArrayList<MailServerCredentials>>() {
+            }.getType();
+            ArrayList<MailServerCredentials> allUsersCredentials = gson.fromJson(initialReadJsonData, credentialsType);
+
+            for (int i = 0; i < allUsersCredentials.size(); i++) {
+                if (allUsersCredentials.get(i).getUsername().equals(initialEmail)) {
+                    String signature = allUsersCredentials.get(i).getSignature();
+                    allUsersCredentials.set(i, new MailServerCredentials(name, email, password, imapHost, smtpHost, imapPort,
+                            smtpPort, signature));
+                    credentialsEditor.putString("data", gson.toJson(allUsersCredentials, credentialsType)).apply();
+                    dialogContext.dismiss();
+                    break;
+                }
+            }
+        } else {
+            Toast.makeText(context, "Failed to get connection", Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    public void createNewEmailDialog(View headerView, LayoutInflater layoutInflater, Context context) {
+        /* define View window */
+        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(context);
+        final View emailPopupView = layoutInflater.inflate(R.layout.add_email_popup, null);
+
+        /* init text field variables */
+        EditText newEmailName = emailPopupView.findViewById(R.id.popup_material_name_asking_text);
+        EditText newEmailAddress = emailPopupView.findViewById(R.id.popup_material_email_asking_text);
+        EditText newEmailPassword = emailPopupView.findViewById(R.id.popup_material_password_asking_text);
+
+        /* init button variables */
+        Button newEmailSaveButton = (Button) emailPopupView.findViewById(R.id.saveButton);
+        /* may not be private */
+        Button newEmailCancelButton = (Button) emailPopupView.findViewById(R.id.cancelButton);
+
+
+        /* open View window */
+        dialogBuilder.setView(emailPopupView);
+        AlertDialog rootCreateNewEmailPopupDialog = dialogBuilder.create();
+        rootCreateNewEmailPopupDialog.show();
+
+        SharedPreferences mailServerCredentials = context.getSharedPreferences("Credentials", Context.MODE_PRIVATE);
+
+        /* store user input */
+        newEmailSaveButton.setOnClickListener(v -> {
+            /* store user input */
+            String name = newEmailName.getText().toString();
+            String email = newEmailAddress.getText().toString();
+            String password = newEmailPassword.getText().toString();
+
+            if (!MailFunctions.validateEmail(newEmailAddress) | !MailFunctions.validateName(newEmailName) | !MailFunctions.validatePassword(newEmailPassword)) {
+                return;
+            }
+
+            boolean connection = addNewAccountCredentials(name, email, password, 993, 587, MailFunctions.getImapHostFromEmail(email),
+                    MailFunctions.getSmtpHostFromEmail(email), rootCreateNewEmailPopupDialog, true, headerView, mailServerCredentials,
+                    context, layoutInflater);
+            if (connection) {
+                Toast.makeText(context, "Downloading messages ...", Toast.LENGTH_SHORT).show();
+                mEmailViewModel.applyDownload();
+                userGlobal = email;
+            }
+        });
+
+        newEmailCancelButton.setOnClickListener(v -> rootCreateNewEmailPopupDialog.dismiss());
+    }
+
+    public void accountManagerViewHandler(Context context, LayoutInflater layoutInflater, View headerView, SharedPreferences mailServerCredentials) {
+        /* define dialog */
+        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(context);
+        final View accountManagerView = layoutInflater.inflate(R.layout.account_manager, null);
+
+        AutoCompleteTextView accountSelectorObject = (AutoCompleteTextView) accountManagerView.findViewById(R.id.accountSelectorTextView);
+
+        /* get string data for drop down menu */
+        SharedPreferences credReader = context.getSharedPreferences("Credentials", Context.MODE_PRIVATE);
+        String currentUser = credReader.getString("currentUser", "");
+
+        TextView showCurrentUserObject = (TextView) accountManagerView.findViewById(R.id.showCurrentUser);
+        Button switchAccountObject = (Button) accountManagerView.findViewById(R.id.switchToAccountButton);
+        Button deleteAccountObject = (Button) accountManagerView.findViewById(R.id.deleteAccountButton);
+        Button changeServerSettingsObject = (Button) accountManagerView.findViewById(R.id.changeServerSettingsButton);
+        Button exit = (Button) accountManagerView.findViewById(R.id.exitButton);
+
+        if (currentUser == null)
+            showCurrentUserObject.setText("current user:\nNone");
+        else {
+            showCurrentUserObject.setText(String.format("current user:\n%s", currentUser));
+            userGlobal = currentUser;
+        }
+
+        SharedPreferences.Editor credEditor = credReader.edit();
+
+        Gson gson = new Gson();
+
+        String jsonCredData = credReader.getString("data", "");
+        Type credentialsType = new TypeToken<ArrayList<MailServerCredentials>>() {
+        }.getType();
+        ArrayList<MailServerCredentials> currentUsersCredentials = gson.fromJson(jsonCredData, credentialsType);
+        String[] userArray = new String[0];
+
+        try {
+            if (!currentUsersCredentials.isEmpty()) {
+                userArray = new String[currentUsersCredentials.size()];
+                for (int i = 0; i < currentUsersCredentials.size(); i++) {
+                    userArray[i] = currentUsersCredentials.get(i).getUsername();
+                }
+            }
+        } catch(NullPointerException ignored) {}
+
+        ArrayAdapter<String> dropDownAdapter = new ArrayAdapter<>(context, R.layout.dropdown_item,
+                R.id.textViewDropDownItem, userArray);
+                accountSelectorObject.setAdapter(dropDownAdapter);
+
+        /* open dialog */
+        dialogBuilder.setView(accountManagerView);
+        AlertDialog rootAccountManagerDialog = dialogBuilder.create();
+        rootAccountManagerDialog.show();
+
+       switchAccountObject.setOnClickListener(view -> {
+            String userInput = accountSelectorObject.getText().toString();
+            String jsonCredData1 = credReader.getString("data", "");
+            Type credentialsType1 = new TypeToken<ArrayList<MailServerCredentials>>() {}.getType();
+            ArrayList<MailServerCredentials> currentUsersCredentials1 = gson.fromJson(jsonCredData1, credentialsType1);
+
+            try {
+                for (int i = 0; i < currentUsersCredentials1.size(); i++) {
+                    if (currentUsersCredentials1.get(i).getUsername().equals(userInput)) {
+                        credEditor.putString("currentUser", userInput).apply();
+                        userGlobal = userInput;
+                        showCurrentUserObject.setText(String.format("current user:\n%s", userInput));
+                        Toast.makeText(context,"Switched account", Toast.LENGTH_SHORT).show();
+                        updateNavHeaderText(headerView, context);
+                        break;
+                    }
+                }
+            } catch (NullPointerException ignored) {
+            }
+        });
+
+        /* needed to use array in inner method later */
+        String[] finalUserArray = userArray;
+
+        deleteAccountObject.setOnClickListener(view -> {
+            String userInput = accountSelectorObject.getText().toString();
+            String jsonCredData12 = credReader.getString("data", "");
+            Type credentialsType12 = new TypeToken<ArrayList<MailServerCredentials>>() {}.getType();
+            ArrayList<MailServerCredentials> currentUserCredentials = gson.fromJson(jsonCredData12, credentialsType12);
+
+            try {
+                for (int i = 0; i < currentUserCredentials.size(); i++) {
+                    if (currentUserCredentials.get(i).getUsername().equals(userInput)) {
+                        currentUserCredentials.remove(i);
+
+                        /* live update adapter for dropdown menu */
+                        int k = 0;
+                        String[] newUserArray = new String[finalUserArray.length - 1];
+                        for (String s : finalUserArray) {
+                            if (!s.contains(userInput)) {
+                                newUserArray[k] = s;
+                                k++;
+                            }
+                        }
+
+                        ArrayAdapter<String> newDropDownAdapter = new ArrayAdapter<>(context.getApplicationContext(), R.layout.dropdown_item,
+                                                                                     R.id.textViewDropDownItem, newUserArray);
+                        accountSelectorObject.setAdapter(newDropDownAdapter);
+
+                        showCurrentUserObject.setText(R.string.NoEmailsInDropDownMenuAvailable);
+
+                        /* update credentials strings */
+                        credEditor.putString("data", gson.toJson(currentUserCredentials, credentialsType12)).apply();
+                        if (!currentUserCredentials.isEmpty()) {
+                            String usernameZero = currentUserCredentials.get(0).getUsername();
+                            credEditor.putString("currentUser", usernameZero).apply();
+                            showCurrentUserObject.setText(String.format("current user:\n%s", usernameZero));
+                            userGlobal = usernameZero;
+                        } else {
+                            credEditor.putString("currentUser", "").apply();
+                            showCurrentUserObject.setText("current user:\n None");
+                            userGlobal = null;
+                        }
+                        Toast.makeText(context,"Account removed", Toast.LENGTH_SHORT).show();
+                        updateNavHeaderText(headerView, context);
+                        break;
+                    }
+                }
+            } catch (NullPointerException ignored) {}
+        });
+
+        changeServerSettingsObject.setOnClickListener(view -> {
+            String userInput = accountSelectorObject.getText().toString();
+            String jsonCredData13 = credReader.getString("data", "");
+            Type credentialsType13 = new TypeToken<ArrayList<MailServerCredentials>>() {}.getType();
+            ArrayList<MailServerCredentials> currentUserCredentials = gson.fromJson(jsonCredData13, credentialsType13);
+
+            String email, name, password, smtpHost, imapHost = null;
+            int smtpPort, imapPort = 0;
+            try {
+                for (int i = 0; i < currentUserCredentials.size(); i++) {
+                    if (currentUserCredentials.get(i).getUsername().equals(userInput)) {
+                        email = currentUserCredentials.get(i).getUsername();
+                        name = currentUserCredentials.get(i).getName();
+                        password = currentUserCredentials.get(i).getPassword();
+                        smtpHost = currentUserCredentials.get(i).getSmtpHost();
+                        imapHost = currentUserCredentials.get(i).getImapHost();
+                        smtpPort = currentUserCredentials.get(i).getSmtpPort();
+                        imapPort = currentUserCredentials.get(i).getImapPort();
+                        changeMailServerSettingsDialog(name, email, password, headerView, imapHost, smtpHost, imapPort,
+                                smtpPort, false, layoutInflater, context, mailServerCredentials);
+                        break;
+                    }
+                }
+            } catch (NullPointerException ignored) {
+            }
+        });
+
+                exit.setOnClickListener(v ->rootAccountManagerDialog.dismiss());
+    }
+
+    public void newUserAlphaSoftwareWarningBeforeAddingEmail(boolean button, View view, Context context, LayoutInflater layoutInflater) {
+        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(context);
+        final View emailPopupView = layoutInflater.inflate(R.layout.new_user_welcome_message, null);
+
+        DrawerFunctions drawerFunctions = new DrawerFunctions();
+
+        /* init text field variables */
+        TextView shedText = emailPopupView.findViewById(R.id.background);
+        Button okayButton = emailPopupView.findViewById(R.id.okay_button);
+
+        /* open View window */
+        dialogBuilder.setView(emailPopupView);
+        AlertDialog alphaWarningDialog = dialogBuilder.create();
+        alphaWarningDialog.show();
+
+        okayButton.setOnClickListener(v -> {
+            alphaWarningDialog.dismiss();
+            if (view!=null) {
+                if (button) {
+                    drawerFunctions.createNewEmailDialog(view, layoutInflater, context);
+                }
+            }
+        });
+    }
+
+    public boolean handleMasterDotsMenu(MenuItem menuItem, Context context, LayoutInflater layoutInflater) {
+        switch (menuItem.getItemId()){
+            case R.id.action_information:
+                newUserAlphaSoftwareWarningBeforeAddingEmail(false, null, context, layoutInflater);
+                return true;
+            case R.id.action_refresh:
+                Toast.makeText(context, "Refreshing", Toast.LENGTH_SHORT).show();
+                mEmailViewModel.applyDownload();
+                return true;
+            case R.id.action_deletefolder:
+                Toast.makeText(context, "Deleting all folders", Toast.LENGTH_SHORT).show();
+                for (int delete = 0; delete < mEmailViewModel.getAll(false).size(); delete++) {
+                    mEmailViewModel.deleteMessage(mEmailViewModel.getAll(false).get(delete));
+                }
+                mEmailViewModel.getAll(true);
+                return true;
+        }
+        return false;
+    }
+}