add 'security' settings

app/src/main/java/im/conversations/android/ui/fragment/settings/InterfaceSettingsFragment.java

@@ -36,6 +36,12 @@ public class InterfaceSettingsFragment extends PreferenceFragmentCompat {
                 });
     }
 
+    @Override
+    public void onStart() {
+        super.onStart();
+        requireActivity().setTitle(R.string.pref_title_interface);
+    }
+
     public SettingsActivity requireSettingsActivity() {
         final var activity = requireActivity();
         if (activity instanceof SettingsActivity) {

app/src/main/java/im/conversations/android/ui/fragment/settings/MainSettingsFragment.java

@@ -11,4 +11,10 @@ public class MainSettingsFragment extends PreferenceFragmentCompat {
     public void onCreatePreferences(@Nullable Bundle savedInstanceState, @Nullable String rootKey) {
         setPreferencesFromResource(R.xml.preferences_main, rootKey);
     }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        requireActivity().setTitle(R.string.title_activity_settings);
+    }
 }

app/src/main/java/im/conversations/android/ui/fragment/settings/SecuritySettingsFragment.java

@@ -0,0 +1,49 @@
+package im.conversations.android.ui.fragment.settings;
+
+import android.os.Bundle;
+import androidx.annotation.Nullable;
+import androidx.preference.PreferenceFragmentCompat;
+import com.google.common.base.Strings;
+import im.conversations.android.R;
+
+public class SecuritySettingsFragment extends PreferenceFragmentCompat {
+
+    @Override
+    public void onCreatePreferences(@Nullable Bundle savedInstanceState, @Nullable String rootKey) {
+        setPreferencesFromResource(R.xml.preferences_security, rootKey);
+        final var omemo = findPreference("omemo");
+        if (omemo == null) {
+            throw new IllegalStateException("The preference resource file did not contain omemo");
+        }
+        omemo.setSummaryProvider(
+                preference -> {
+                    final var sharedPreferences = preference.getSharedPreferences();
+                    final String value;
+                    if (sharedPreferences == null) {
+                        value = null;
+                    } else {
+                        value =
+                                sharedPreferences.getString(
+                                        preference.getKey(),
+                                        requireContext().getString(R.string.omemo_setting_default));
+                    }
+                    switch (Strings.nullToEmpty(value)) {
+                        case "always":
+                            return requireContext()
+                                    .getString(R.string.pref_omemo_setting_summary_always);
+                        case "default_off":
+                            return requireContext()
+                                    .getString(R.string.pref_omemo_setting_summary_default_off);
+                        default:
+                            return requireContext()
+                                    .getString(R.string.pref_omemo_setting_summary_default_on);
+                    }
+                });
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        requireActivity().setTitle(R.string.pref_title_security);
+    }
+}

app/src/main/res/drawable/ic_lock_24dp.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M18,8h-1L17,6c0,-2.76 -2.24,-5 -5,-5S7,3.24 7,6v2L6,8c-1.1,0 -2,0.9 -2,2v10c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2L20,10c0,-1.1 -0.9,-2 -2,-2zM12,17c-1.1,0 -2,-0.9 -2,-2s0.9,-2 2,-2 2,0.9 2,2 -0.9,2 -2,2zM15.1,8L8.9,8L8.9,6c0,-1.71 1.39,-3.1 3.1,-3.1 1.71,0 3.1,1.39 3.1,3.1v2z" />
+</vector>

app/src/main/res/drawable/ic_verified_user_24dp.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:tint="?attr/colorControlNormal"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M12,1L3,5v6c0,5.55 3.84,10.74 9,12 5.16,-1.26 9,-6.45 9,-12L21,5l-9,-4zM10,17l-4,-4 1.41,-1.41L10,14.17l6.59,-6.59L18,9l-8,8z" />
+</vector>

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

@@ -31,7 +31,6 @@
                 android:id="@+id/material_toolbar"
                 android:layout_width="match_parent"
                 android:layout_height="?attr/actionBarSize"
-                app:title="@string/title_activity_settings"
                 app:navigationIcon="@drawable/ic_arrow_back_24dp"/>
         </com.google.android.material.appbar.AppBarLayout>
         <androidx.fragment.app.FragmentContainerView

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

@@ -3,4 +3,6 @@
     <bool name="scroll_to_bottom">true</bool>
     <bool name="enter_is_send">false</bool>
     <bool name="allow_screenshots">true</bool>
-</resources>
+    <bool name="btbv">true</bool>
+    <string translatable="false" name="omemo_setting_default">default_on</string>
+</resources>

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

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <string-array name="omemo_setting_entry_values">
+        <item>always</item>
+        <item>default_on</item>
+        <item>default_off</item>
+    </string-array>
+    <string-array name="omemo_setting_entries">
+        <item>@string/always</item>
+        <item>@string/default_on</item>
+        <item>@string/default_off</item>
+    </string-array>
+
+</resources>

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

@@ -1026,5 +1026,9 @@
     <string name="pref_light_dark_mode">Light/dark mode</string>
     <string name="appearance">Appearance</string>
     <string name="pref_allow_screenshots">Allow screenshots</string>
+    <string name="pref_category_e2ee">End-to-end encryption</string>
+    <string name="pref_category_server_connection">Server connection</string>
+    <string name="detect_mim">Require channel binding</string>
+    <string name="detect_mim_summary">Channel binding can detect some machine-in-the-middle attacks</string>
 
 </resources>

app/src/main/res/xml/preferences_main.xml

@@ -10,7 +10,7 @@
         app:title="@string/pref_title_security"
         app:summary="@string/pref_summary_security"
         android:icon="@drawable/ic_security_24dp"
-        app:fragment="im.conversations.android.ui.fragment.MainSettingsFragment"/>
+        app:fragment="im.conversations.android.ui.fragment.settings.SecuritySettingsFragment"/>
     <Preference
         app:title="@string/unified_push_distributor"
         app:summary="@string/unified_push_summary"

app/src/main/res/xml/preferences_security.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <PreferenceCategory android:title="@string/pref_category_e2ee">
+        <ListPreference
+            android:icon="@drawable/ic_lock_24dp"
+            android:defaultValue="@string/omemo_setting_default"
+            android:entries="@array/omemo_setting_entries"
+            android:entryValues="@array/omemo_setting_entry_values"
+            android:key="omemo"
+            android:summary="@string/pref_omemo_setting_summary_default_on"
+            android:title="@string/pref_omemo_setting" />
+        <SwitchPreferenceCompat
+            android:icon="@drawable/ic_verified_user_24dp"
+            android:defaultValue="@bool/btbv"
+            android:key="btbv"
+            android:summary="@string/pref_blind_trust_before_verification_summary"
+            android:title="@string/pref_blind_trust_before_verification" />
+
+    </PreferenceCategory>
+    <PreferenceCategory android:title="@string/pref_category_server_connection">
+        <SwitchPreferenceCompat android:title="@string/detect_mim"
+            android:summary="@string/detect_mim_summary"
+            android:key="channel_binding_required"/>
+    </PreferenceCategory>
+
+</PreferenceScreen>