Merge branch 'release/0.12.0'

* Add db layer to school info

* Add base classes

* Add database migration

* Add base view

* Update icon

* Fix textviews height

* Handle error and empty results

* Improve school info look

* Add strings

* Fix action bar elevation in school fragment

* Add missing blank lines

* Reorganize strings

* Make field title first in order

* Make fields views selectable

* Rename SchoolInfo to School

.circleci/config.yml

@@ -98,7 +98,7 @@ jobs:
           command: yes | sdkmanager --licenses && yes | sdkmanager --update
       - run:
           name: Setup emulator
-          command: sdkmanager "system-images;android-19;default;armeabi-v7a" && echo "no" | avdmanager create avd -n test -k "system-images;android-19;default;armeabi-v7a"
+          command: sdkmanager "system-images;android-22;default;armeabi-v7a" && echo "no" | avdmanager create avd -n test -k "system-images;android-22;default;armeabi-v7a"
       - run:
           name: Launch emulator
           command: export LD_LIBRARY_PATH=${ANDROID_HOME}/emulator/lib64:${ANDROID_HOME}/emulator/lib64/qt/lib && emulator64-arm -avd test -noaudio -no-boot-anim -no-window -accel on
@@ -116,7 +116,7 @@ jobs:
             adb shell input keyevent 82
       - run:
           name: Run instrumented tests
-          command: ./gradlew clean createPlayDebugCoverageReport jacocoTestReport --no-daemon --stacktrace --console=plain -PdisablePreDex
+          command: ./gradlew clean createFdroidDebugCoverageReport jacocoTestReport --no-daemon --stacktrace --console=plain -PdisablePreDex
       - run:
           name: Collect logs from emulator
           command: adb logcat -d > ./app/build/reports/logcat_emulator.txt

.gitignore

@@ -110,4 +110,5 @@ Thumbs.db
 
 ### AndroidStudio Patch ###
 
-!/gradle/wrapper/gradle-wrapper.jar
+!/gradle/wrapper/gradle-wrapper.jar
+.idea/jarRepositories.xml

.idea/codeStyles/Project.xml

@@ -1,6 +1,9 @@
 <component name="ProjectCodeStyleConfiguration">
   <code_scheme name="Project" version="173">
     <option name="LINE_SEPARATOR" value="&#10;" />
+    <AndroidXmlCodeStyleSettings>
+      <option name="ARRANGEMENT_SETTINGS_MIGRATED_TO_191" value="true" />
+    </AndroidXmlCodeStyleSettings>
     <JetCodeStyleSettings>
       <option name="PACKAGES_TO_USE_STAR_IMPORTS">
         <value>

.travis.yml

@@ -3,8 +3,8 @@ jdk: oraclejdk8
 
 env:
  global:
-    - ANDROID_API_LEVEL=28
+    - ANDROID_API_LEVEL=29
-    - ANDROID_BUILD_TOOLS_VERSION=28.0.3
+    - ANDROID_BUILD_TOOLS_VERSION=29.0.2
 
 cache:
   directories:
@@ -14,7 +14,7 @@ cache:
 branches:
   only:
     - develop
-    - 0.10.0
+    - 0.12.0
 
 android:
  licenses:
@@ -34,12 +34,12 @@ android:
     - extra-android-m2repository
     - addon-google_apis-google-$ANDROID_API_LEVEL
     # Android emulator
-    - android-19
+    - android-22
-    - sys-img-armeabi-v7a-android-19
+    - sys-img-armeabi-v7a-android-22
 
 before_script:
     # Launch emulator before the execution
-    - echo no | android create avd --force -n test -t android-19 --abi armeabi-v7a
+    - echo no | android create avd --force -n test -t android-22 --abi armeabi-v7a
     - emulator -avd test -no-audio -no-window &
     - android-wait-for-emulator
     - adb shell input keyevent 82 &
@@ -50,7 +50,7 @@ script:
   - fossa --no-ansi || true
   #- ./gradlew lintPlayRelease -x fabricGenerateResourcesPlayRelease --stacktrace --daemon
   - ./gradlew testPlayDebugUnitTest -x fabricGenerateResourcesPlay --stacktrace --daemon
-  - ./gradlew createPlayDebugCoverageReport --stacktrace --daemon
+  - ./gradlew createFdroidDebugCoverageReport --stacktrace --daemon
   - ./gradlew jacocoTestReport --stacktrace --daemon
   - if [ -z ${SONAR_HOST+x} ]; then echo "sonar scan skipped"; else
       git fetch --unshallow;

README.en.md

@@ -4,8 +4,8 @@
 [![Travis](https://img.shields.io/travis/com/wulkanowy/wulkanowy/master.svg?style=flat-square)](https://travis-ci.com/wulkanowy/wulkanowy)
 [![Codecov](https://img.shields.io/codecov/c/github/wulkanowy/wulkanowy/master.svg?style=flat-square)](https://codecov.io/gh/wulkanowy/wulkanowy)
 [![Discord](https://img.shields.io/discord/390889354199040011.svg?style=flat-square)](https://discord.gg/vccAQBr)
-[![F-Droid](https://img.shields.io/f-droid/v/io.github.wulkanowy.svg)](https://f-droid.org/packages/io.github.wulkanowy/)
+[![F-Droid](https://img.shields.io/f-droid/v/io.github.wulkanowy.svg?style=flat-square)](https://f-droid.org/packages/io.github.wulkanowy/)
-[![Last release](https://img.shields.io/github/release/wulkanowy/wulkanowy.svg?logo=github)](https://github.com/wulkanowy/wulkanowy/releases)
+[![Last release](https://img.shields.io/github/release/wulkanowy/wulkanowy.svg?logo=github&style=flat-square)](https://github.com/wulkanowy/wulkanowy/releases)
 
 Unofficial android VULCAN UONET+ register client for student and parent
 

README.md

@@ -4,8 +4,8 @@
 [![Travis](https://img.shields.io/travis/com/wulkanowy/wulkanowy/master.svg?style=flat-square)](https://travis-ci.com/wulkanowy/wulkanowy)
 [![Codecov](https://img.shields.io/codecov/c/github/wulkanowy/wulkanowy/master.svg?style=flat-square)](https://codecov.io/gh/wulkanowy/wulkanowy)
 [![Discord](https://img.shields.io/discord/390889354199040011.svg?style=flat-square)](https://discord.gg/vccAQBr)
-[![F-Droid](https://img.shields.io/f-droid/v/io.github.wulkanowy.svg)](https://f-droid.org/packages/io.github.wulkanowy/)
+[![F-Droid](https://img.shields.io/f-droid/v/io.github.wulkanowy.svg?style=flat-square)](https://f-droid.org/packages/io.github.wulkanowy/)
-[![Last release](https://img.shields.io/github/release/wulkanowy/wulkanowy.svg?logo=github)](https://github.com/wulkanowy/wulkanowy/releases)
+[![Last release](https://img.shields.io/github/release/wulkanowy/wulkanowy.svg?logo=github&style=flat-square)](https://github.com/wulkanowy/wulkanowy/releases)
 
 Nieoficjalny klient dziennika VULCAN UONET+ dla ucznia i rodzica
 

app/build.gradle

@@ -9,16 +9,16 @@ apply from: 'sonarqube.gradle'
 apply from: 'hooks.gradle'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 29
-    buildToolsVersion '28.0.3'
+    buildToolsVersion '29.0.2'
 
     defaultConfig {
         applicationId "io.github.wulkanowy"
         testApplicationId "io.github.tests.wulkanowy"
         minSdkVersion 16
-        targetSdkVersion 28
+        targetSdkVersion 29
-        versionCode 43
+        versionCode 47
-        versionName "0.10.0"
+        versionName "0.12.0"
         multiDexEnabled true
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables.useSupportLibrary = true
@@ -28,8 +28,10 @@ android {
         ]
         javaCompileOptions {
             annotationProcessorOptions {
-                arguments = ["room.schemaLocation": "$projectDir/schemas".toString(),
+                arguments = [
-                             "room.incremental"   : "true"]
+                        "room.schemaLocation": "$projectDir/schemas".toString(),
+                        "room.incremental"   : "true"
+                ]
             }
         }
     }
@@ -61,7 +63,6 @@ android {
             versionNameSuffix "-dev"
             testCoverageEnabled = true
             ext.enableCrashlytics = project.hasProperty("enableCrashlytics")
-            multiDexKeepProguard file('proguard-multidex-rules.pro')
         }
     }
 
@@ -109,12 +110,11 @@ play {
 }
 
 ext {
-    work_manager = "2.2.0"
+    work_manager = "2.3.0-alpha03"
-    room = "2.2.0-beta01"
+    room = "2.2.1"
-    dagger = "2.24"
+    dagger = "2.25.2"
     chucker = "2.0.4"
     mockk = "1.9.2"
-    mockito_core = "3.0.6"
 }
 
 configurations.all {
@@ -123,23 +123,23 @@ configurations.all {
 }
 
 dependencies {
-    implementation "io.github.wulkanowy:api:0.10.0"
+    implementation "io.github.wulkanowy:api:0.12.0"
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation "androidx.core:core-ktx:1.1.0-rc03"
+    implementation "androidx.core:core-ktx:1.2.0-beta01"
-    implementation "androidx.activity:activity-ktx:1.0.0-rc01"
+    implementation "androidx.activity:activity-ktx:1.1.0-rc01"
-    implementation "androidx.appcompat:appcompat:1.1.0-rc01"
+    implementation "androidx.appcompat:appcompat:1.1.0"
-    implementation "androidx.appcompat:appcompat-resources:1.1.0-rc01"
+    implementation "androidx.appcompat:appcompat-resources:1.1.0"
-    implementation "androidx.fragment:fragment-ktx:1.1.0-rc04"
+    implementation "androidx.fragment:fragment-ktx:1.2.0-rc01"
     implementation "androidx.annotation:annotation:1.1.0"
     implementation "androidx.multidex:multidex:2.0.1"
 
-    implementation "androidx.preference:preference-ktx:1.1.0-rc01"
+    implementation "androidx.preference:preference-ktx:1.1.0"
-    implementation "androidx.recyclerview:recyclerview:1.1.0-beta03"
+    implementation "androidx.recyclerview:recyclerview:1.1.0-rc01"
     implementation "androidx.viewpager:viewpager:1.0.0"
-    implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.0.0"
+    implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.1.0-alpha03"
     implementation "androidx.constraintlayout:constraintlayout:1.1.3"
-    implementation "androidx.coordinatorlayout:coordinatorlayout:1.1.0-beta01"
+    implementation "androidx.coordinatorlayout:coordinatorlayout:1.1.0-rc01"
     implementation "com.google.android.material:material:1.1.0-alpha07"
     implementation "com.github.wulkanowy:material-chips-input:2.0.1"
     implementation "com.github.PhilJay:MPAndroidChart:v3.1.0"
@@ -167,16 +167,16 @@ dependencies {
 
     implementation "com.github.pwittchen:reactivenetwork-rx2:3.0.6"
     implementation "io.reactivex.rxjava2:rxandroid:2.1.1"
-    implementation "io.reactivex.rxjava2:rxjava:2.2.12"
+    implementation "io.reactivex.rxjava2:rxjava:2.2.13"
 
-    implementation "com.google.code.gson:gson:2.8.5"
+    implementation "com.google.code.gson:gson:2.8.6"
     implementation "com.jakewharton.threetenabp:threetenabp:1.2.1"
     implementation "com.jakewharton.timber:timber:4.7.1"
     implementation "at.favre.lib:slf4j-timber:1.0.1"
-    implementation "com.squareup.okhttp3:logging-interceptor:3.12.3"
+    implementation "com.squareup.okhttp3:logging-interceptor:3.12.6"
-    implementation "com.mikepenz:aboutlibraries:7.0.3"
+    implementation "com.mikepenz:aboutlibraries:7.0.4"
 
-    playImplementation "com.google.firebase:firebase-core:17.2.0"
+    playImplementation "com.google.firebase:firebase-core:17.2.1"
     playImplementation "com.crashlytics.sdk.android:crashlytics:2.10.1"
 
     releaseImplementation "fr.o80.chucker:library-no-op:$chucker"
@@ -187,10 +187,7 @@ dependencies {
     testImplementation "junit:junit:4.12"
     testImplementation "io.mockk:mockk:$mockk"
     testImplementation "org.threeten:threetenbp:1.4.0"
-    testImplementation "org.mockito:mockito-core:$mockito_core"
+    testImplementation "org.mockito:mockito-inline:3.1.0"
-    testImplementation("org.mockito:mockito-inline:3.0.6") {
-        exclude group: "org.mockito", module: "mockito-core"
-    }
 
     androidTestImplementation "androidx.test:core:1.2.0"
     androidTestImplementation "androidx.test:runner:1.2.0"
@@ -198,10 +195,7 @@ dependencies {
     androidTestImplementation "io.mockk:mockk-android:$mockk"
     androidTestImplementation "androidx.room:room-testing:$room"
     androidTestImplementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
-    androidTestImplementation "org.mockito:mockito-core:$mockito_core"
+    androidTestImplementation "org.mockito:mockito-android:3.1.0"
-    androidTestImplementation("org.mockito:mockito-android:3.0.6") {
-        exclude group: 'org.mockito', module: 'mockito-core'
-    }
 }
 
 apply plugin: 'com.google.gms.google-services'

app/proguard-multidex-rules.pro

@@ -1,3 +0,0 @@
--keep class android.support.test.internal** { *; }
--keep class org.junit.** { *; }
--keep public class io.github.wulkanowy** { *; }

app/proguard-rules.pro

@@ -42,4 +42,4 @@
 
 
 #Config for Material Components
--keep class com.google.android.material.tabs.**
+-keep class com.google.android.material.tabs.** { *; }

app/src/androidTest/java/io/github/wulkanowy/data/db/migrations/AbstractMigrationTest.kt

@@ -22,12 +22,7 @@ abstract class AbstractMigrationTest {
     fun getMigratedRoomDatabase(): AppDatabase {
         val database = Room.databaseBuilder(ApplicationProvider.getApplicationContext(),
             AppDatabase::class.java, dbName)
-            .addMigrations(
+            .addMigrations(*AppDatabase.getMigrations())
-                Migration12(),
-                Migration13(),
-                Migration14(),
-                Migration15()
-            )
             .build()
         // close the database and release any stream resources when the test finishes
         helper.closeWhenFinished(database)

app/src/androidTest/java/io/github/wulkanowy/data/db/migrations/Migration13Test.kt

@@ -3,10 +3,14 @@ package io.github.wulkanowy.data.db.migrations
 import android.content.ContentValues
 import android.database.sqlite.SQLiteDatabase
 import androidx.sqlite.db.SupportSQLiteDatabase
+import io.github.wulkanowy.data.db.Converters
+import io.github.wulkanowy.data.db.entities.Semester
 import org.junit.Assert.assertEquals
-import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
 import org.junit.Test
+import org.threeten.bp.LocalDate.now
 import org.threeten.bp.LocalDate.of
+import kotlin.test.assertFalse
 import kotlin.test.assertTrue
 
 class Migration13Test : AbstractMigrationTest() {
@@ -97,11 +101,9 @@ class Migration13Test : AbstractMigrationTest() {
             close()
         }
 
-        helper.runMigrationsAndValidate(dbName, 13, true, Migration13())
+        val db = helper.runMigrationsAndValidate(dbName, 13, true, Migration13())
 
-        val db = getMigratedRoomDatabase()
+        val semesters1 = getSemesters(db, "SELECT * FROM Semesters WHERE student_id = 1 AND class_id = 5")
-
-        val semesters1 = db.semesterDao.loadAll(1, 5).blockingGet()
         assertTrue { semesters1.single { it.isCurrent }.isCurrent }
         semesters1[0].run {
             assertFalse(isCurrent)
@@ -119,7 +121,7 @@ class Migration13Test : AbstractMigrationTest() {
             assertEquals(2, diaryId)
         }
 
-        db.semesterDao.loadAll(2, 5).blockingGet().let {
+        getSemesters(db, "SELECT * FROM Semesters WHERE student_id = 2 AND class_id = 5").let {
             assertTrue { it.single { it.isCurrent }.isCurrent }
             assertEquals(1970, it[0].schoolYear)
             assertEquals(of(1970, 1, 1), it[0].end)
@@ -130,7 +132,7 @@ class Migration13Test : AbstractMigrationTest() {
             assertTrue(it[3].isCurrent)
         }
 
-        db.semesterDao.loadAll(2, 5).blockingGet().let {
+        getSemesters(db, "SELECT * FROM Semesters WHERE student_id = 2 AND class_id = 5").let {
             assertTrue { it.single { it.isCurrent }.isCurrent }
             assertFalse(it[0].isCurrent)
             assertFalse(it[1].isCurrent)
@@ -139,6 +141,30 @@ class Migration13Test : AbstractMigrationTest() {
         }
     }
 
+    private fun getSemesters(db: SupportSQLiteDatabase, query: String): List<Semester> {
+        val semesters = mutableListOf<Semester>()
+
+        val cursor = db.query(query)
+        if (cursor.moveToFirst()) {
+            do {
+                semesters.add(Semester(
+                    studentId = cursor.getInt(1),
+                    diaryId = cursor.getInt(2),
+                    diaryName = cursor.getString(3),
+                    semesterId = cursor.getInt(4),
+                    semesterName = cursor.getInt(5),
+                    isCurrent = cursor.getInt(6) == 1,
+                    classId = cursor.getInt(7),
+                    unitId = cursor.getInt(8),
+                    schoolYear = cursor.getInt(9),
+                    start = Converters().timestampToDate(cursor.getLong(10))!!,
+                    end = Converters().timestampToDate(cursor.getLong(11))!!
+                ))
+            } while (cursor.moveToNext())
+        }
+        return semesters.toList()
+    }
+
     private fun createStudent(db: SupportSQLiteDatabase, studentId: Int, schoolName: String = "", classId: Int = -1, schoolId: Int = 123) {
         db.insert("Students", SQLiteDatabase.CONFLICT_FAIL, ContentValues().apply {
             put("endpoint", "https://fakelog.cf")

app/src/androidTest/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsLocalTest.kt

@@ -4,6 +4,7 @@ import androidx.room.Room
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import io.github.wulkanowy.data.db.AppDatabase
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.Semester
 import org.junit.After
@@ -24,7 +25,7 @@ class GradeStatisticsLocalTest {
     fun createDb() {
         testDb = Room.inMemoryDatabaseBuilder(ApplicationProvider.getApplicationContext(), AppDatabase::class.java)
             .build()
-        gradeStatisticsLocal = GradeStatisticsLocal(testDb.gradeStatistics)
+        gradeStatisticsLocal = GradeStatisticsLocal(testDb.gradeStatistics, testDb.gradePointsStatistics)
     }
 
     @After
@@ -63,7 +64,52 @@ class GradeStatisticsLocalTest {
         assertEquals(stats[0].subject, "Wszystkie")
     }
 
+    @Test
+    fun saveAndRead_points() {
+        gradeStatisticsLocal.saveGradesPointsStatistics(listOf(
+            getGradePointsStatistics("Matematyka", 2, 1),
+            getGradePointsStatistics("Chemia", 2, 1),
+            getGradePointsStatistics("Fizyka", 1, 2)
+        ))
+
+        val stats = gradeStatisticsLocal.getGradesPointsStatistics(
+            Semester(2, 2, "", 2019, 1, 2, true, LocalDate.now(), LocalDate.now(), 1, 1),
+            "Matematyka"
+        ).blockingGet()
+        with(stats) {
+            assertEquals(subject, "Matematyka")
+            assertEquals(others, 5.0)
+            assertEquals(student, 5.0)
+        }
+    }
+
+    @Test
+    fun saveAndRead_subjectEmpty() {
+        gradeStatisticsLocal.saveGradesPointsStatistics(listOf())
+
+        val stats = gradeStatisticsLocal.getGradesPointsStatistics(
+            Semester(2, 2, "", 2019, 1, 2, true, LocalDate.now(), LocalDate.now(), 1, 1),
+            "Matematyka"
+        ).blockingGet()
+        assertEquals(null, stats)
+    }
+
+    @Test
+    fun saveAndRead_allEmpty() {
+        gradeStatisticsLocal.saveGradesPointsStatistics(listOf())
+
+        val stats = gradeStatisticsLocal.getGradesPointsStatistics(
+            Semester(2, 2, "", 2019, 1, 2, true, LocalDate.now(), LocalDate.now(), 1, 1),
+            "Wszystkie"
+        ).blockingGet()
+        assertEquals(null, stats)
+    }
+
     private fun getGradeStatistics(subject: String, studentId: Int, semesterId: Int): GradeStatistics {
         return GradeStatistics(studentId, semesterId, subject, 5, 5, false)
     }
+
+    private fun getGradePointsStatistics(subject: String, studentId: Int, semesterId: Int): GradePointsStatistics {
+        return GradePointsStatistics(studentId, semesterId, subject, 5.0, 5.0)
+    }
 }

app/src/main/java/io/github/wulkanowy/data/RepositoryModule.kt

@@ -85,6 +85,10 @@ internal class RepositoryModule {
     @Provides
     fun provideGradeStatisticsDao(database: AppDatabase) = database.gradeStatistics
 
+    @Singleton
+    @Provides
+    fun provideGradePointsStatisticsDao(database: AppDatabase) = database.gradePointsStatistics
+
     @Singleton
     @Provides
     fun provideMessagesDao(database: AppDatabase) = database.messagesDao
@@ -136,4 +140,12 @@ internal class RepositoryModule {
     @Singleton
     @Provides
     fun provideMobileDevicesDao(database: AppDatabase) = database.mobileDeviceDao
+
+    @Singleton
+    @Provides
+    fun provideTeacherDao(database: AppDatabase) = database.teacherDao
+
+    @Singleton
+    @Provides
+    fun provideSchoolInfoDao(database: AppDatabase) = database.schoolDao
 }

app/src/main/java/io/github/wulkanowy/data/db/AppDatabase.kt

@@ -6,11 +6,13 @@ import androidx.room.Room
 import androidx.room.RoomDatabase
 import androidx.room.RoomDatabase.JournalMode.TRUNCATE
 import androidx.room.TypeConverters
+import androidx.room.migration.Migration
 import io.github.wulkanowy.data.db.dao.AttendanceDao
 import io.github.wulkanowy.data.db.dao.AttendanceSummaryDao
 import io.github.wulkanowy.data.db.dao.CompletedLessonsDao
 import io.github.wulkanowy.data.db.dao.ExamDao
 import io.github.wulkanowy.data.db.dao.GradeDao
+import io.github.wulkanowy.data.db.dao.GradePointsStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradeStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradeSummaryDao
 import io.github.wulkanowy.data.db.dao.HomeworkDao
@@ -20,15 +22,18 @@ import io.github.wulkanowy.data.db.dao.MobileDeviceDao
 import io.github.wulkanowy.data.db.dao.NoteDao
 import io.github.wulkanowy.data.db.dao.RecipientDao
 import io.github.wulkanowy.data.db.dao.ReportingUnitDao
+import io.github.wulkanowy.data.db.dao.SchoolDao
 import io.github.wulkanowy.data.db.dao.SemesterDao
 import io.github.wulkanowy.data.db.dao.StudentDao
 import io.github.wulkanowy.data.db.dao.SubjectDao
+import io.github.wulkanowy.data.db.dao.TeacherDao
 import io.github.wulkanowy.data.db.dao.TimetableDao
 import io.github.wulkanowy.data.db.entities.Attendance
 import io.github.wulkanowy.data.db.entities.AttendanceSummary
 import io.github.wulkanowy.data.db.entities.CompletedLesson
 import io.github.wulkanowy.data.db.entities.Exam
 import io.github.wulkanowy.data.db.entities.Grade
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.GradeSummary
 import io.github.wulkanowy.data.db.entities.Homework
@@ -38,9 +43,11 @@ import io.github.wulkanowy.data.db.entities.MobileDevice
 import io.github.wulkanowy.data.db.entities.Note
 import io.github.wulkanowy.data.db.entities.Recipient
 import io.github.wulkanowy.data.db.entities.ReportingUnit
+import io.github.wulkanowy.data.db.entities.School
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.db.entities.Subject
+import io.github.wulkanowy.data.db.entities.Teacher
 import io.github.wulkanowy.data.db.entities.Timetable
 import io.github.wulkanowy.data.db.migrations.Migration10
 import io.github.wulkanowy.data.db.migrations.Migration11
@@ -48,6 +55,9 @@ import io.github.wulkanowy.data.db.migrations.Migration12
 import io.github.wulkanowy.data.db.migrations.Migration13
 import io.github.wulkanowy.data.db.migrations.Migration14
 import io.github.wulkanowy.data.db.migrations.Migration15
+import io.github.wulkanowy.data.db.migrations.Migration16
+import io.github.wulkanowy.data.db.migrations.Migration17
+import io.github.wulkanowy.data.db.migrations.Migration18
 import io.github.wulkanowy.data.db.migrations.Migration2
 import io.github.wulkanowy.data.db.migrations.Migration3
 import io.github.wulkanowy.data.db.migrations.Migration4
@@ -70,6 +80,7 @@ import javax.inject.Singleton
         Grade::class,
         GradeSummary::class,
         GradeStatistics::class,
+        GradePointsStatistics::class,
         Message::class,
         Note::class,
         Homework::class,
@@ -78,7 +89,9 @@ import javax.inject.Singleton
         CompletedLesson::class,
         ReportingUnit::class,
         Recipient::class,
-        MobileDevice::class
+        MobileDevice::class,
+        Teacher::class,
+        School::class
     ],
     version = AppDatabase.VERSION_SCHEMA,
     exportSchema = true
@@ -87,29 +100,36 @@ import javax.inject.Singleton
 abstract class AppDatabase : RoomDatabase() {
 
     companion object {
-        const val VERSION_SCHEMA = 15
+        const val VERSION_SCHEMA = 18
+
+        fun getMigrations(): Array<Migration> {
+            return arrayOf(
+                Migration2(),
+                Migration3(),
+                Migration4(),
+                Migration5(),
+                Migration6(),
+                Migration7(),
+                Migration8(),
+                Migration9(),
+                Migration10(),
+                Migration11(),
+                Migration12(),
+                Migration13(),
+                Migration14(),
+                Migration15(),
+                Migration16(),
+                Migration17(),
+                Migration18()
+            )
+        }
 
         fun newInstance(context: Context): AppDatabase {
             return Room.databaseBuilder(context, AppDatabase::class.java, "wulkanowy_database")
                 .setJournalMode(TRUNCATE)
                 .fallbackToDestructiveMigrationFrom(VERSION_SCHEMA + 1)
                 .fallbackToDestructiveMigrationOnDowngrade()
-                .addMigrations(
+                .addMigrations(*getMigrations())
-                    Migration2(),
-                    Migration3(),
-                    Migration4(),
-                    Migration5(),
-                    Migration6(),
-                    Migration7(),
-                    Migration8(),
-                    Migration9(),
-                    Migration10(),
-                    Migration11(),
-                    Migration12(),
-                    Migration13(),
-                    Migration14(),
-                    Migration15()
-                )
                 .build()
         }
     }
@@ -132,6 +152,8 @@ abstract class AppDatabase : RoomDatabase() {
 
     abstract val gradeStatistics: GradeStatisticsDao
 
+    abstract val gradePointsStatistics: GradePointsStatisticsDao
+
     abstract val messagesDao: MessagesDao
 
     abstract val noteDao: NoteDao
@@ -149,4 +171,8 @@ abstract class AppDatabase : RoomDatabase() {
     abstract val recipientDao: RecipientDao
 
     abstract val mobileDeviceDao: MobileDeviceDao
+
+    abstract val teacherDao: TeacherDao
+
+    abstract val schoolDao: SchoolDao
 }

app/src/main/java/io/github/wulkanowy/data/db/dao/GradePointsStatisticsDao.kt

@@ -0,0 +1,26 @@
+package io.github.wulkanowy.data.db.dao
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Query
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
+import io.reactivex.Maybe
+import javax.inject.Singleton
+
+@Singleton
+@Dao
+interface GradePointsStatisticsDao {
+
+    @Insert
+    fun insertAll(gradesStatistics: List<GradePointsStatistics>)
+
+    @Delete
+    fun deleteAll(gradesStatistics: List<GradePointsStatistics>)
+
+    @Query("SELECT * FROM GradesPointsStatistics WHERE student_id = :studentId AND semester_id = :semesterId AND subject = :subjectName")
+    fun loadSubject(semesterId: Int, studentId: Int, subjectName: String): Maybe<GradePointsStatistics>
+
+    @Query("SELECT * FROM GradesPointsStatistics WHERE student_id = :studentId AND semester_id = :semesterId")
+    fun loadAll(semesterId: Int, studentId: Int): Maybe<List<GradePointsStatistics>>
+}

app/src/main/java/io/github/wulkanowy/data/db/dao/SchoolDao.kt

@@ -0,0 +1,23 @@
+package io.github.wulkanowy.data.db.dao
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Query
+import io.github.wulkanowy.data.db.entities.School
+import io.reactivex.Maybe
+import javax.inject.Singleton
+
+@Singleton
+@Dao
+interface SchoolDao {
+
+    @Insert
+    fun insert(school: School)
+
+    @Delete
+    fun delete(school: School)
+
+    @Query("SELECT * FROM School WHERE student_id = :studentId AND class_id = :classId")
+    fun load(studentId: Int, classId: Int): Maybe<School>
+}

app/src/main/java/io/github/wulkanowy/data/db/dao/TeacherDao.kt

@@ -0,0 +1,23 @@
+package io.github.wulkanowy.data.db.dao
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Query
+import io.github.wulkanowy.data.db.entities.Teacher
+import io.reactivex.Maybe
+import javax.inject.Singleton
+
+@Singleton
+@Dao
+interface TeacherDao {
+
+    @Insert
+    fun insertAll(teachers: List<Teacher>)
+
+    @Delete
+    fun deleteAll(teachers: List<Teacher>)
+
+    @Query("SELECT * FROM Teachers WHERE student_id = :studentId AND class_id = :classId")
+    fun loadAll(studentId: Int, classId: Int): Maybe<List<Teacher>>
+}

app/src/main/java/io/github/wulkanowy/data/db/entities/GradePointsStatistics.kt

@@ -0,0 +1,24 @@
+package io.github.wulkanowy.data.db.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "GradesPointsStatistics")
+data class GradePointsStatistics(
+
+    @ColumnInfo(name = "student_id")
+    val studentId: Int,
+
+    @ColumnInfo(name = "semester_id")
+    val semesterId: Int,
+
+    val subject: String,
+
+    val others: Double,
+
+    val student: Double
+) {
+    @PrimaryKey(autoGenerate = true)
+    var id: Long = 0
+}

app/src/main/java/io/github/wulkanowy/data/db/entities/School.kt

@@ -0,0 +1,30 @@
+package io.github.wulkanowy.data.db.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import java.io.Serializable
+
+@Entity(tableName = "School")
+data class School(
+
+    @ColumnInfo(name = "student_id")
+    val studentId: Int,
+
+    @ColumnInfo(name = "class_id")
+    val classId: Int,
+
+    val name: String,
+
+    val address: String,
+
+    val contact: String,
+
+    val headmaster: String,
+
+    val pedagogue: String
+) : Serializable {
+
+    @PrimaryKey(autoGenerate = true)
+    var id: Long = 0
+}

app/src/main/java/io/github/wulkanowy/data/db/entities/Teacher.kt

@@ -0,0 +1,27 @@
+package io.github.wulkanowy.data.db.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import java.io.Serializable
+
+@Entity(tableName = "Teachers")
+data class Teacher(
+
+    @ColumnInfo(name = "student_id")
+    val studentId: Int,
+
+    @ColumnInfo(name = "class_id")
+    val classId: Int,
+
+    val subject: String,
+
+    val name: String,
+
+    @ColumnInfo(name = "short_name")
+    val shortName: String
+) : Serializable {
+
+    @PrimaryKey(autoGenerate = true)
+    var id: Long = 0
+}

app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration16.kt

@@ -0,0 +1,20 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration16 : Migration(15, 16) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS Teachers (
+                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                student_id INTEGER NOT NULL,
+                class_id INTEGER NOT NULL,
+                subject TEXT NOT NULL,
+                name TEXT NOT NULL,
+                short_name TEXT NOT NULL
+            )
+        """)
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration17.kt

@@ -0,0 +1,29 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration17 : Migration(16, 17) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        createGradesPointsStatisticsTable(database)
+        truncateSemestersTable(database)
+    }
+
+    private fun createGradesPointsStatisticsTable(database: SupportSQLiteDatabase) {
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS GradesPointsStatistics(
+                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                student_id INTEGER NOT NULL,
+                semester_id INTEGER NOT NULL,
+                subject TEXT NOT NULL,
+                others REAL NOT NULL,
+                student REAL NOT NULL
+            )
+        """)
+    }
+
+    private fun truncateSemestersTable(database: SupportSQLiteDatabase) {
+        database.execSQL("DELETE FROM Semesters")
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration18.kt

@@ -0,0 +1,22 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration18 : Migration(17, 18) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS School (
+                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                student_id INTEGER NOT NULL,
+                class_id INTEGER NOT NULL,
+                name TEXT NOT NULL,
+                address TEXT NOT NULL,
+                contact TEXT NOT NULL,
+                headmaster TEXT NOT NULL,
+                pedagogue TEXT NOT NULL
+            )
+        """)
+    }
+}

app/src/main/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsLocal.kt

@@ -1,6 +1,8 @@
 package io.github.wulkanowy.data.repositories.gradestatistics
 
+import io.github.wulkanowy.data.db.dao.GradePointsStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradeStatisticsDao
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.Semester
 import io.reactivex.Maybe
@@ -8,27 +10,57 @@ import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
-class GradeStatisticsLocal @Inject constructor(private val gradeStatisticsDb: GradeStatisticsDao) {
+class GradeStatisticsLocal @Inject constructor(
+    private val gradeStatisticsDb: GradeStatisticsDao,
+    private val gradePointsStatisticsDb: GradePointsStatisticsDao
+) {
 
     fun getGradesStatistics(semester: Semester, isSemester: Boolean): Maybe<List<GradeStatistics>> {
-        return gradeStatisticsDb.loadAll(semester.semesterId, semester.studentId, isSemester)
+        return gradeStatisticsDb.loadAll(semester.semesterId, semester.studentId, isSemester).filter { it.isNotEmpty() }
-            .filter { !it.isEmpty() }
+    }
+
+    fun getGradesPointsStatistics(semester: Semester): Maybe<List<GradePointsStatistics>> {
+        return gradePointsStatisticsDb.loadAll(semester.semesterId, semester.studentId).filter { it.isNotEmpty() }
     }
 
     fun getGradesStatistics(semester: Semester, isSemester: Boolean, subjectName: String): Maybe<List<GradeStatistics>> {
-        return (if ("Wszystkie" == subjectName) gradeStatisticsDb.loadAll(semester.semesterId, semester.studentId, isSemester).map { list ->
+        return when (subjectName) {
-            list.groupBy { it.grade }.map {
+            "Wszystkie" -> gradeStatisticsDb.loadAll(semester.semesterId, semester.studentId, isSemester).map { list ->
-                GradeStatistics(semester.studentId, semester.semesterId, subjectName, it.key, it.value.fold(0) { acc, e -> acc + e.amount }, false)
+                list.groupBy { it.grade }.map {
+                    GradeStatistics(semester.studentId, semester.semesterId, subjectName, it.key,
+                        it.value.fold(0) { acc, e -> acc + e.amount }, false)
+                }
             }
+            else -> gradeStatisticsDb.loadSubject(semester.semesterId, semester.studentId, subjectName, isSemester)
+        }.filter { it.isNotEmpty() }
+    }
+
+    fun getGradesPointsStatistics(semester: Semester, subjectName: String): Maybe<GradePointsStatistics> {
+        return when (subjectName) {
+            "Wszystkie" -> gradePointsStatisticsDb.loadAll(semester.semesterId, semester.studentId).flatMap { list ->
+                if (list.isEmpty()) return@flatMap Maybe.empty<GradePointsStatistics>()
+                Maybe.just(GradePointsStatistics(semester.studentId, semester.semesterId, subjectName,
+                    list.fold(.0) { acc, e -> acc + e.others },
+                    list.fold(.0) { acc, e -> acc + e.student })
+                )
+            }
+            else -> gradePointsStatisticsDb.loadSubject(semester.semesterId, semester.studentId, subjectName)
         }
-        else gradeStatisticsDb.loadSubject(semester.semesterId, semester.studentId, subjectName, isSemester)).filter { !it.isEmpty() }
     }
 
     fun saveGradesStatistics(gradesStatistics: List<GradeStatistics>) {
         gradeStatisticsDb.insertAll(gradesStatistics)
     }
 
+    fun saveGradesPointsStatistics(gradePointsStatistics: List<GradePointsStatistics>) {
+        gradePointsStatisticsDb.insertAll(gradePointsStatistics)
+    }
+
     fun deleteGradesStatistics(gradesStatistics: List<GradeStatistics>) {
         gradeStatisticsDb.deleteAll(gradesStatistics)
     }
+
+    fun deleteGradesPointsStatistics(gradesPointsStatistics: List<GradePointsStatistics>) {
+        gradePointsStatisticsDb.deleteAll(gradesPointsStatistics)
+    }
 }

app/src/main/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsRemote.kt

@@ -1,6 +1,7 @@
 package io.github.wulkanowy.data.repositories.gradestatistics
 
 import io.github.wulkanowy.api.Api
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.Semester
 import io.reactivex.Single
@@ -12,7 +13,10 @@ class GradeStatisticsRemote @Inject constructor(private val api: Api) {
 
     fun getGradeStatistics(semester: Semester, isSemester: Boolean): Single<List<GradeStatistics>> {
         return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { it.getGradesStatistics(semester.semesterId, isSemester) }
+            .flatMap {
+                if (isSemester) it.getGradesAnnualStatistics(semester.semesterId)
+                else it.getGradesPartialStatistics(semester.semesterId)
+            }
             .map { gradeStatistics ->
                 gradeStatistics.map {
                     GradeStatistics(
@@ -26,4 +30,20 @@ class GradeStatisticsRemote @Inject constructor(private val api: Api) {
                 }
             }
     }
+
+    fun getGradePointsStatistics(semester: Semester): Single<List<GradePointsStatistics>> {
+        return Single.just(api.apply { diaryId = semester.diaryId })
+            .flatMap { it.getGradesPointsStatistics(semester.semesterId) }
+            .map { gradePointsStatistics ->
+                gradePointsStatistics.map {
+                    GradePointsStatistics(
+                        semesterId = semester.semesterId,
+                        studentId = semester.studentId,
+                        subject = it.subject,
+                        others = it.others,
+                        student = it.student
+                    )
+                }
+            }
+    }
 }

app/src/main/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsRepository.kt

@@ -2,9 +2,11 @@ package io.github.wulkanowy.data.repositories.gradestatistics
 
 import com.github.pwittchen.reactivenetwork.library.rx2.ReactiveNetwork
 import com.github.pwittchen.reactivenetwork.library.rx2.internet.observing.InternetObservingSettings
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.utils.uniqueSubtract
+import io.reactivex.Maybe
 import io.reactivex.Single
 import java.net.UnknownHostException
 import javax.inject.Inject
@@ -31,4 +33,19 @@ class GradeStatisticsRepository @Inject constructor(
                         }
                 }.flatMap { local.getGradesStatistics(semester, isSemester, subjectName).toSingle(emptyList()) })
     }
+
+    fun getGradesPointsStatistics(semester: Semester, subjectName: String, forceRefresh: Boolean): Maybe<GradePointsStatistics> {
+        return local.getGradesPointsStatistics(semester, subjectName).filter { !forceRefresh }
+            .switchIfEmpty(ReactiveNetwork.checkInternetConnectivity(settings)
+                .flatMapMaybe {
+                    if (it) remote.getGradePointsStatistics(semester).toMaybe()
+                    else Maybe.error(UnknownHostException())
+                }.flatMap { new ->
+                    local.getGradesPointsStatistics(semester).defaultIfEmpty(emptyList())
+                        .doOnSuccess { old ->
+                            local.deleteGradesPointsStatistics(old.uniqueSubtract(new))
+                            local.saveGradesPointsStatistics(new.uniqueSubtract(old))
+                        }
+                }.flatMap { local.getGradesPointsStatistics(semester, subjectName) })
+    }
 }

app/src/main/java/io/github/wulkanowy/data/repositories/preferences/PreferencesRepository.kt

@@ -12,52 +12,60 @@ class PreferencesRepository @Inject constructor(
     val context: Context
 ) {
     val startMenuIndex: Int
-        get() = sharedPref.getString(context.getString(R.string.pref_key_start_menu), "0")?.toIntOrNull() ?: 0
+        get() = getString(R.string.pref_key_start_menu, R.string.pref_default_startup).toInt()
 
     val isShowPresent: Boolean
-        get() = sharedPref.getBoolean(context.getString(R.string.pref_key_attendance_present), true)
+        get() = getBoolean(R.string.pref_key_attendance_present, R.bool.pref_default_attendance_present)
 
     val gradeAverageMode: String
-        get() = sharedPref.getString(context.getString(R.string.pref_key_grade_average_mode), "only_one_semester") ?: "only_one_semester"
+        get() = getString(R.string.pref_key_grade_average_mode, R.string.pref_default_grade_average_mode)
 
     val gradeAverageForceCalc: Boolean
-        get() = sharedPref.getBoolean(context.getString(R.string.pref_key_grade_average_force_calc), false)
+        get() = getBoolean(R.string.pref_key_grade_average_force_calc, R.bool.pref_default_grade_average_force_calc)
 
     val isGradeExpandable: Boolean
-        get() = !sharedPref.getBoolean(context.getString(R.string.pref_key_expand_grade), false)
+        get() = !getBoolean(R.string.pref_key_expand_grade, R.bool.pref_default_expand_grade)
 
-    val appThemeKey: String = context.getString(R.string.pref_key_app_theme)
+    val appThemeKey = context.getString(R.string.pref_key_app_theme)
     val appTheme: String
-        get() = sharedPref.getString(appThemeKey, "light") ?: "light"
+        get() = getString(appThemeKey, R.string.pref_default_app_theme)
 
     val gradeColorTheme: String
-        get() = sharedPref.getString(context.getString(R.string.pref_key_grade_color_scheme), "vulcan") ?: "vulcan"
+        get() = getString(R.string.pref_key_grade_color_scheme, R.string.pref_default_grade_color_scheme)
 
-    val serviceEnableKey: String = context.getString(R.string.pref_key_services_enable)
+    val serviceEnableKey = context.getString(R.string.pref_key_services_enable)
     val isServiceEnabled: Boolean
-        get() = sharedPref.getBoolean(serviceEnableKey, true)
+        get() = getBoolean(serviceEnableKey, R.bool.pref_default_services_enable)
 
-    val servicesIntervalKey: String = context.getString(R.string.pref_key_services_interval)
+    val servicesIntervalKey = context.getString(R.string.pref_key_services_interval)
     val servicesInterval: Long
-        get() = sharedPref.getString(servicesIntervalKey, "60")?.toLongOrNull() ?: 60
+        get() = getString(servicesIntervalKey, R.string.pref_default_services_interval).toLong()
 
-    val servicesOnlyWifiKey: String = context.getString(R.string.pref_key_services_wifi_only)
+    val servicesOnlyWifiKey = context.getString(R.string.pref_key_services_wifi_only)
     val isServicesOnlyWifi: Boolean
-        get() = sharedPref.getBoolean(servicesOnlyWifiKey, false)
+        get() = getBoolean(servicesOnlyWifiKey, R.bool.pref_default_services_wifi_only)
 
     val isNotificationsEnable: Boolean
-        get() = sharedPref.getBoolean(context.getString(R.string.pref_key_notifications_enable), true)
+        get() = getBoolean(R.string.pref_key_notifications_enable, R.bool.pref_default_notifications_enable)
 
-    val isDebugNotificationEnableKey: String = context.getString(R.string.pref_key_notification_debug)
+    val isDebugNotificationEnableKey = context.getString(R.string.pref_key_notification_debug)
     val isDebugNotificationEnable: Boolean
-        get() = sharedPref.getBoolean(isDebugNotificationEnableKey, false)
+        get() = getBoolean(isDebugNotificationEnableKey, R.bool.pref_default_notification_debug)
 
     val gradePlusModifier: Double
-        get() = sharedPref.getString(context.getString(R.string.pref_key_grade_modifier_plus), "0.0")?.toDouble() ?: 0.0
+        get() = getString(R.string.pref_key_grade_modifier_plus, R.string.pref_default_grade_modifier_plus).toDouble()
 
     val gradeMinusModifier: Double
-        get() = sharedPref.getString(context.getString(R.string.pref_key_grade_modifier_minus), "0.0")?.toDouble() ?: 0.0
+        get() = getString(R.string.pref_key_grade_modifier_minus, R.string.pref_default_grade_modifier_minus).toDouble()
 
     val fillMessageContent: Boolean
-        get() = sharedPref.getBoolean(context.getString(R.string.pref_key_fill_message_content), true)
+        get() = getBoolean(R.string.pref_key_fill_message_content, R.bool.pref_default_fill_message_content)
+
+    private fun getString(id: Int, default: Int) = getString(context.getString(id), default)
+
+    private fun getString(id: String, default: Int) = sharedPref.getString(id, context.getString(default)) ?: context.getString(default)
+
+    private fun getBoolean(id: Int, default: Int) = getBoolean(context.getString(id), default)
+
+    private fun getBoolean(id: String, default: Int) = sharedPref.getBoolean(id, context.resources.getBoolean(default))
 }

app/src/main/java/io/github/wulkanowy/data/repositories/school/SchoolLocal.kt

@@ -0,0 +1,22 @@
+package io.github.wulkanowy.data.repositories.school
+
+import io.github.wulkanowy.data.db.dao.SchoolDao
+import io.github.wulkanowy.data.db.entities.School
+import io.github.wulkanowy.data.db.entities.Semester
+import io.reactivex.Maybe
+import javax.inject.Inject
+
+class SchoolLocal @Inject constructor(private val schoolDb: SchoolDao) {
+
+    fun saveSchool(school: School) {
+        schoolDb.insert(school)
+    }
+
+    fun deleteSchool(school: School) {
+        schoolDb.delete(school)
+    }
+
+    fun getSchool(semester: Semester): Maybe<School> {
+        return schoolDb.load(semester.studentId, semester.classId)
+    }
+}

app/src/main/java/io/github/wulkanowy/data/repositories/school/SchoolRemote.kt

@@ -0,0 +1,26 @@
+package io.github.wulkanowy.data.repositories.school
+
+import io.github.wulkanowy.api.Api
+import io.github.wulkanowy.data.db.entities.School
+import io.github.wulkanowy.data.db.entities.Semester
+import io.reactivex.Single
+import javax.inject.Inject
+
+class SchoolRemote @Inject constructor(private val api: Api) {
+
+    fun getSchoolInfo(semester: Semester): Single<School> {
+        return Single.just(api.apply { diaryId = semester.diaryId })
+            .flatMap { it.getSchool() }
+            .map {
+                School(
+                    studentId = semester.studentId,
+                    classId = semester.classId,
+                    name = it.name,
+                    address = it.address,
+                    contact = it.contact,
+                    headmaster = it.headmaster,
+                    pedagogue = it.pedagogue
+                )
+            }
+    }
+}

app/src/main/java/io/github/wulkanowy/data/repositories/school/SchoolRepository.kt

@@ -0,0 +1,41 @@
+package io.github.wulkanowy.data.repositories.school
+
+import com.github.pwittchen.reactivenetwork.library.rx2.ReactiveNetwork
+import com.github.pwittchen.reactivenetwork.library.rx2.internet.observing.InternetObservingSettings
+import io.github.wulkanowy.data.db.entities.School
+import io.github.wulkanowy.data.db.entities.Semester
+import io.reactivex.Maybe
+import io.reactivex.Single
+import java.net.UnknownHostException
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class SchoolRepository @Inject constructor(
+    private val settings: InternetObservingSettings,
+    private val local: SchoolLocal,
+    private val remote: SchoolRemote
+) {
+
+    fun getSchoolInfo(semester: Semester, forceRefresh: Boolean = false): Maybe<School> {
+        return local.getSchool(semester).filter { !forceRefresh }
+            .switchIfEmpty(ReactiveNetwork.checkInternetConnectivity(settings)
+                .flatMap {
+                    if (it) remote.getSchoolInfo(semester)
+                    else Single.error(UnknownHostException())
+                }.flatMapMaybe { new ->
+                    local.getSchool(semester)
+                        .doOnSuccess { old ->
+                            if (new != old) {
+                                local.deleteSchool(old)
+                                local.saveSchool(new)
+                            }
+                        }
+                        .doOnComplete {
+                            local.saveSchool(new)
+                        }
+                }.flatMap({ local.getSchool(semester) }, { Maybe.error(it) },
+                    { local.getSchool(semester) })
+            )
+    }
+}

app/src/main/java/io/github/wulkanowy/data/repositories/teacher/TeacherLocal.kt

@@ -0,0 +1,22 @@
+package io.github.wulkanowy.data.repositories.teacher
+
+import io.github.wulkanowy.data.db.dao.TeacherDao
+import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.data.db.entities.Teacher
+import io.reactivex.Maybe
+import javax.inject.Inject
+
+class TeacherLocal @Inject constructor(private val teacherDb: TeacherDao) {
+
+    fun saveTeachers(teachers: List<Teacher>) {
+        teacherDb.insertAll(teachers)
+    }
+
+    fun deleteTeachers(teachers: List<Teacher>) {
+        teacherDb.deleteAll(teachers)
+    }
+
+    fun getTeachers(semester: Semester): Maybe<List<Teacher>> {
+        return teacherDb.loadAll(semester.studentId, semester.classId).filter { it.isNotEmpty() }
+    }
+}

app/src/main/java/io/github/wulkanowy/data/repositories/teacher/TeacherRemote.kt

@@ -0,0 +1,28 @@
+package io.github.wulkanowy.data.repositories.teacher
+
+import io.github.wulkanowy.api.Api
+import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.data.db.entities.Teacher
+import io.reactivex.Single
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class TeacherRemote @Inject constructor(private val api: Api) {
+
+    fun getTeachers(semester: Semester): Single<List<Teacher>> {
+        return Single.just(api.apply { diaryId = semester.diaryId })
+            .flatMap { it.getTeachers() }
+            .map { teachers ->
+                teachers.map {
+                    Teacher(
+                        studentId = semester.studentId,
+                        name = it.name,
+                        subject = it.subject,
+                        shortName = it.short,
+                        classId = semester.classId
+                    )
+                }
+            }
+    }
+}

app/src/main/java/io/github/wulkanowy/data/repositories/teacher/TeacherRepository.kt

@@ -0,0 +1,34 @@
+package io.github.wulkanowy.data.repositories.teacher
+
+import com.github.pwittchen.reactivenetwork.library.rx2.ReactiveNetwork
+import com.github.pwittchen.reactivenetwork.library.rx2.internet.observing.InternetObservingSettings
+import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.data.db.entities.Teacher
+import io.github.wulkanowy.utils.uniqueSubtract
+import io.reactivex.Single
+import java.net.UnknownHostException
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class TeacherRepository @Inject constructor(
+    private val settings: InternetObservingSettings,
+    private val local: TeacherLocal,
+    private val remote: TeacherRemote
+) {
+
+    fun getTeachers(semester: Semester, forceRefresh: Boolean = false): Single<List<Teacher>> {
+        return local.getTeachers(semester).filter { !forceRefresh }
+            .switchIfEmpty(ReactiveNetwork.checkInternetConnectivity(settings)
+                .flatMap {
+                    if (it) remote.getTeachers(semester)
+                    else Single.error(UnknownHostException())
+                }.flatMap { new ->
+                    local.getTeachers(semester).toSingle(emptyList())
+                        .doOnSuccess { old ->
+                            local.deleteTeachers(old.uniqueSubtract(new))
+                            local.saveTeachers(new.uniqueSubtract(old))
+                        }
+                }.flatMap { local.getTeachers(semester).toSingle(emptyList()) })
+    }
+}

app/src/main/java/io/github/wulkanowy/services/ServicesModule.kt

@@ -21,6 +21,7 @@ import io.github.wulkanowy.services.sync.works.LuckyNumberWork
 import io.github.wulkanowy.services.sync.works.MessageWork
 import io.github.wulkanowy.services.sync.works.NoteWork
 import io.github.wulkanowy.services.sync.works.RecipientWork
+import io.github.wulkanowy.services.sync.works.TeacherWork
 import io.github.wulkanowy.services.sync.works.TimetableWork
 import io.github.wulkanowy.services.sync.works.Work
 import io.github.wulkanowy.services.widgets.TimetableWidgetService
@@ -28,17 +29,15 @@ import javax.inject.Singleton
 
 @Suppress("unused")
 @AssistedModule
-@Module(includes = [AssistedInject_ServicesModule::class])
+@Module(includes = [AssistedInject_ServicesModule::class, ServicesModule.Static::class])
 abstract class ServicesModule {
 
     @Module
-    companion object {
+    object Static {
 
-        @JvmStatic
         @Provides
         fun provideWorkManager(context: Context) = WorkManager.getInstance(context)
 
-        @JvmStatic
         @Singleton
         @Provides
         fun provideNotificationManager(context: Context) = NotificationManagerCompat.from(context)
@@ -75,6 +74,10 @@ abstract class ServicesModule {
     @IntoSet
     abstract fun provideTimetableWork(work: TimetableWork): Work
 
+    @Binds
+    @IntoSet
+    abstract fun provideTeacherWork(work: TeacherWork): Work
+
     @Binds
     @IntoSet
     abstract fun provideLuckyNumberWork(work: LuckyNumberWork): Work

app/src/main/java/io/github/wulkanowy/services/sync/works/TeacherWork.kt

@@ -0,0 +1,14 @@
+package io.github.wulkanowy.services.sync.works
+
+import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.data.repositories.teacher.TeacherRepository
+import io.reactivex.Completable
+import javax.inject.Inject
+
+class TeacherWork @Inject constructor(private val teacherRepository: TeacherRepository) : Work {
+
+    override fun create(student: Student, semester: Semester): Completable {
+        return teacherRepository.getTeachers(semester, true).ignoreElement()
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/base/ErrorDialog.kt

@@ -43,16 +43,17 @@ class ErrorDialog : DialogFragment() {
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
-        StringWriter().let { writer ->
-            error.printStackTrace(PrintWriter(writer))
 
-            errorDialogContent.text = writer.toString()
+        val stringWriter = StringWriter().apply {
-            errorDialogCopy.setOnClickListener {
+            error.printStackTrace(PrintWriter(this))
-                ClipData.newPlainText("wulkanowyError", writer.toString()).let { clip ->
+        }
-                    activity?.getSystemService<ClipboardManager>()?.primaryClip = clip
+
-                }
+        errorDialogContent.text = stringWriter.toString()
-                Toast.makeText(context, R.string.all_copied, LENGTH_LONG).show()
+        errorDialogCopy.setOnClickListener {
-            }
+            val clip = ClipData.newPlainText("wulkanowy", stringWriter.toString())
+            activity?.getSystemService<ClipboardManager>()?.setPrimaryClip(clip)
+
+            Toast.makeText(context, R.string.all_copied, LENGTH_LONG).show()
         }
         errorDialogCancel.setOnClickListener { dismiss() }
     }

app/src/main/java/io/github/wulkanowy/ui/base/ThemeManager.kt

@@ -3,6 +3,7 @@ package io.github.wulkanowy.ui.base
 import android.content.pm.PackageManager.GET_ACTIVITIES
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.app.AppCompatDelegate
+import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
 import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_NO
 import androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_YES
 import io.github.wulkanowy.R
@@ -22,8 +23,12 @@ class ThemeManager @Inject constructor(private val preferencesRepository: Prefer
 
     fun applyDefaultTheme() {
         AppCompatDelegate.setDefaultNightMode(
-            if (preferencesRepository.appTheme == "light") MODE_NIGHT_NO
+            when (val theme = preferencesRepository.appTheme) {
-            else MODE_NIGHT_YES
+                "light" -> MODE_NIGHT_NO
+                "dark", "black" -> MODE_NIGHT_YES
+                "system" -> MODE_NIGHT_FOLLOW_SYSTEM
+                else -> throw IllegalArgumentException("Wrong theme: $theme")
+            }
         )
     }
 

app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendancePresenter.kt

@@ -158,7 +158,7 @@ class AttendancePresenter @Inject constructor(
         view?.apply {
             showPreButton(!currentDate.minusDays(1).isHolidays)
             showNextButton(!currentDate.plusDays(1).isHolidays)
-            updateNavigationDay(currentDate.toFormattedString("EEEE\ndd.MM.YYYY").capitalize())
+            updateNavigationDay(currentDate.toFormattedString("EEEE, dd.MM").capitalize())
         }
     }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/attendance/summary/AttendanceSummaryFragment.kt

@@ -80,7 +80,7 @@ class AttendanceSummaryFragment : BaseFragment(), AttendanceSummaryView, MainVie
     override fun updateDataSet(data: List<AttendanceSummaryItem>, header: AttendanceSummaryScrollableHeader) {
         with(attendanceSummaryAdapter) {
             updateDataSet(data, true)
-            removeAllScrollableFooters()
+            removeAllScrollableHeaders()
             addScrollableHeader(header)
         }
     }

app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradeModule.kt

@@ -11,13 +11,12 @@ import io.github.wulkanowy.ui.modules.grade.statistics.GradeStatisticsFragment
 import io.github.wulkanowy.ui.modules.grade.summary.GradeSummaryFragment
 
 @Suppress("unused")
-@Module
+@Module(includes = [GradeModule.Static::class])
 abstract class GradeModule {
 
     @Module
-    companion object {
+    object Static {
 
-        @JvmStatic
         @PerFragment
         @Provides
         fun provideGradeAdapter(fragment: GradeFragment) = BaseFragmentPagerAdapter(fragment.childFragmentManager)

app/src/main/java/io/github/wulkanowy/ui/modules/grade/details/GradeDetailsFragment.kt

@@ -33,6 +33,8 @@ class GradeDetailsFragment : BaseFragment(), GradeDetailsView, GradeView.GradeCh
     @Inject
     lateinit var gradeDetailsAdapter: FlexibleAdapter<AbstractFlexibleItem<*>>
 
+    private var gradeDetailsMenu: Menu? = null
+
     companion object {
         fun newInstance() = GradeDetailsFragment()
     }
@@ -69,6 +71,8 @@ class GradeDetailsFragment : BaseFragment(), GradeDetailsView, GradeView.GradeCh
 
     override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
         inflater.inflate(R.menu.action_menu_grade_details, menu)
+        gradeDetailsMenu = menu
+        presenter.updateMarkAsDoneButton()
     }
 
     override fun initView() {
@@ -165,6 +169,10 @@ class GradeDetailsFragment : BaseFragment(), GradeDetailsView, GradeView.GradeCh
         (parentFragment as? GradeFragment)?.onChildRefresh()
     }
 
+    override fun enableMarkAsDoneButton(enable: Boolean) {
+        gradeDetailsMenu?.findItem(R.id.gradeDetailsMenuRead)?.isEnabled = enable
+    }
+
     override fun onDestroyView() {
         super.onDestroyView()
         presenter.onDetachView()

app/src/main/java/io/github/wulkanowy/ui/modules/grade/details/GradeDetailsPresenter.kt

@@ -1,5 +1,6 @@
 package io.github.wulkanowy.ui.modules.grade.details
 
+import android.widget.Toast
 import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
 import io.github.wulkanowy.data.db.entities.Grade
 import io.github.wulkanowy.data.repositories.grade.GradeRepository
@@ -26,6 +27,8 @@ class GradeDetailsPresenter @Inject constructor(
     private val analytics: FirebaseAnalyticsHelper
 ) : BasePresenter<GradeDetailsView>(errorHandler, studentRepository, schedulers) {
 
+    private var newGradesAmount: Int = 0
+
     private var currentSemesterId = 0
 
     override fun onAttachView(view: GradeDetailsView) {
@@ -52,6 +55,8 @@ class GradeDetailsPresenter @Inject constructor(
                             updateItem(header)
                         }
                     }
+                    newGradesAmount--
+                    updateMarkAsDoneButton()
                     updateGrade(item.grade)
                 }
             }
@@ -106,6 +111,10 @@ class GradeDetailsPresenter @Inject constructor(
         disposable.clear()
     }
 
+    fun updateMarkAsDoneButton() {
+        view?.enableMarkAsDoneButton(newGradesAmount > 0)
+    }
+
     private fun loadData(semesterId: Int, forceRefresh: Boolean) {
         Timber.i("Loading grade details data started")
         disposable.add(studentRepository.getCurrentStudent()
@@ -131,6 +140,8 @@ class GradeDetailsPresenter @Inject constructor(
             }
             .subscribe({
                 Timber.i("Loading grade details result: Success")
+                newGradesAmount  = it.sumBy { gradeDetailsHeader -> gradeDetailsHeader.newGrades }
+                updateMarkAsDoneButton()
                 view?.run {
                     showEmpty(it.isEmpty())
                     showContent(it.isNotEmpty())

app/src/main/java/io/github/wulkanowy/ui/modules/grade/details/GradeDetailsView.kt

@@ -46,6 +46,8 @@ interface GradeDetailsView : BaseView {
 
     fun notifyParentRefresh()
 
+    fun enableMarkAsDoneButton(enable: Boolean)
+
     fun getGradeNumberString(number: Int): String
 
     fun getHeaderOfItem(item: AbstractFlexibleItem<*>): IExpandable<*, out IFlexible<*>>?

app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsFragment.kt

@@ -1,5 +1,6 @@
 package io.github.wulkanowy.ui.modules.grade.statistics
 
+import android.graphics.Color
 import android.graphics.Color.WHITE
 import android.os.Bundle
 import android.view.LayoutInflater
@@ -10,11 +11,15 @@ import android.widget.TextView
 import androidx.core.content.ContextCompat
 import com.github.mikephil.charting.components.Legend
 import com.github.mikephil.charting.components.LegendEntry
+import com.github.mikephil.charting.data.BarData
+import com.github.mikephil.charting.data.BarDataSet
+import com.github.mikephil.charting.data.BarEntry
 import com.github.mikephil.charting.data.PieData
 import com.github.mikephil.charting.data.PieDataSet
 import com.github.mikephil.charting.data.PieEntry
 import com.github.mikephil.charting.formatter.ValueFormatter
 import io.github.wulkanowy.R
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.ui.base.BaseFragment
 import io.github.wulkanowy.ui.modules.grade.GradeFragment
@@ -38,7 +43,9 @@ class GradeStatisticsFragment : BaseFragment(), GradeStatisticsView, GradeView.G
         fun newInstance() = GradeStatisticsFragment()
     }
 
-    override val isViewEmpty get() = gradeStatisticsChart.isEmpty
+    override val isPieViewEmpty get() = gradeStatisticsChart.isEmpty
+
+    override val isBarViewEmpty get() = gradeStatisticsChartPoints.isEmpty
 
     private lateinit var gradeColors: List<Pair<Int, Int>>
 
@@ -60,6 +67,11 @@ class GradeStatisticsFragment : BaseFragment(), GradeStatisticsView, GradeView.G
         1 to R.color.grade_material_one
     )
 
+    private val gradePointsColors = listOf(
+        Color.parseColor("#37c69c"),
+        Color.parseColor("#d8b12a")
+    )
+
     private val gradeLabels = listOf(
         "6, 6-", "5, 5-, 5+", "4, 4-, 4+", "3, 3-, 3+", "2, 2-, 2+", "1, 1+"
     )
@@ -70,8 +82,8 @@ class GradeStatisticsFragment : BaseFragment(), GradeStatisticsView, GradeView.G
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         super.onActivityCreated(savedInstanceState)
-        messageContainer = gradeStatisticsChart
+        messageContainer = gradeStatisticsSwipe
-        presenter.onAttachView(this, savedInstanceState?.getBoolean(SAVED_CHART_TYPE))
+        presenter.onAttachView(this, savedInstanceState?.getSerializable(SAVED_CHART_TYPE) as? ViewType)
     }
 
     override fun initView() {
@@ -84,6 +96,13 @@ class GradeStatisticsFragment : BaseFragment(), GradeStatisticsView, GradeView.G
             legend.textColor = context.getThemeAttrColor(android.R.attr.textColorPrimary)
         }
 
+        with(gradeStatisticsChartPoints) {
+            description.isEnabled = false
+
+            animateXY(1000, 1000)
+            legend.textColor = context.getThemeAttrColor(android.R.attr.textColorPrimary)
+        }
+
         subjectsAdapter = ArrayAdapter(requireContext(), android.R.layout.simple_spinner_item, mutableListOf())
         subjectsAdapter.setDropDownViewResource(R.layout.item_attendance_summary_subject)
 
@@ -105,23 +124,25 @@ class GradeStatisticsFragment : BaseFragment(), GradeStatisticsView, GradeView.G
         }
     }
 
-    override fun updateData(items: List<GradeStatistics>, theme: String) {
+    override fun updatePieData(items: List<GradeStatistics>, theme: String) {
         gradeColors = when (theme) {
             "vulcan" -> vulcanGradeColors
             else -> materialGradeColors
         }
 
-        gradeStatisticsChart.run {
+        val dataset = PieDataSet(items.map {
-            data = PieData(PieDataSet(items.map {
+            PieEntry(it.amount.toFloat(), it.grade.toString())
-                PieEntry(it.amount.toFloat(), it.grade.toString())
+        }, "Legenda").apply {
-            }, "Legenda").apply {
+            valueTextSize = 12f
-                valueTextSize = 12f
+            sliceSpace = 1f
-                sliceSpace = 1f
+            valueTextColor = WHITE
-                valueTextColor = WHITE
+            setColors(items.map {
-                setColors(items.map {
+                gradeColors.single { color -> color.first == it.grade }.second
-                    gradeColors.single { color -> color.first == it.grade }.second
+            }.toIntArray(), context)
-                }.toIntArray(), context)
+        }
-            }).apply {
+
+        with(gradeStatisticsChart) {
+            data = PieData(dataset).apply {
                 setTouchEnabled(false)
                 setValueFormatter(object : ValueFormatter() {
                     override fun getPieLabel(value: Float, pieEntry: PieEntry): String {
@@ -144,6 +165,47 @@ class GradeStatisticsFragment : BaseFragment(), GradeStatisticsView, GradeView.G
         }
     }
 
+    override fun updateBarData(item: GradePointsStatistics) {
+        val dataset = BarDataSet(listOf(
+            BarEntry(1f, item.others.toFloat()),
+            BarEntry(2f, item.student.toFloat())
+        ), "Legenda").apply {
+            valueTextSize = 12f
+            valueTextColor = requireContext().getThemeAttrColor(android.R.attr.textColorPrimary)
+            valueFormatter = object : ValueFormatter() {
+                override fun getBarLabel(barEntry: BarEntry) = "${barEntry.y}%"
+            }
+            colors = gradePointsColors
+        }
+
+        with(gradeStatisticsChartPoints) {
+            data = BarData(dataset).apply {
+                barWidth = 0.5f
+                setFitBars(true)
+            }
+            setTouchEnabled(false)
+            xAxis.setDrawLabels(false)
+            xAxis.setDrawGridLines(false)
+            requireContext().getThemeAttrColor(android.R.attr.textColorPrimary).let {
+                axisLeft.textColor = it
+                axisRight.textColor = it
+            }
+            legend.setCustom(listOf(
+                LegendEntry().apply {
+                    label = "Średnia klasy"
+                    formColor = gradePointsColors[0]
+                    form = Legend.LegendForm.SQUARE
+                },
+                LegendEntry().apply {
+                    label = "Uczeń"
+                    formColor = gradePointsColors[1]
+                    form = Legend.LegendForm.SQUARE
+                }
+            ))
+            invalidate()
+        }
+    }
+
     override fun showSubjects(show: Boolean) {
         gradeStatisticsSubjectsContainer.visibility = if (show) View.VISIBLE else View.INVISIBLE
         gradeStatisticsTypeSwitch.visibility = if (show) View.VISIBLE else View.INVISIBLE
@@ -151,12 +213,17 @@ class GradeStatisticsFragment : BaseFragment(), GradeStatisticsView, GradeView.G
 
     override fun clearView() {
         gradeStatisticsChart.clear()
+        gradeStatisticsChartPoints.clear()
     }
 
-    override fun showContent(show: Boolean) {
+    override fun showPieContent(show: Boolean) {
         gradeStatisticsChart.visibility = if (show) View.VISIBLE else View.GONE
     }
 
+    override fun showBarContent(show: Boolean) {
+        gradeStatisticsChartPoints.visibility = if (show) View.VISIBLE else View.GONE
+    }
+
     override fun showEmpty(show: Boolean) {
         gradeStatisticsEmpty.visibility = if (show) View.VISIBLE else View.INVISIBLE
     }
@@ -196,13 +263,17 @@ class GradeStatisticsFragment : BaseFragment(), GradeStatisticsView, GradeView.G
     override fun onResume() {
         super.onResume()
         gradeStatisticsTypeSwitch.setOnCheckedChangeListener { _, checkedId ->
-            presenter.onTypeChange(checkedId == R.id.gradeStatisticsTypeSemester)
+            presenter.onTypeChange(when (checkedId) {
+                R.id.gradeStatisticsTypeSemester -> ViewType.SEMESTER
+                R.id.gradeStatisticsTypePartial -> ViewType.PARTIAL
+                else -> ViewType.POINTS
+            })
         }
     }
 
     override fun onSaveInstanceState(outState: Bundle) {
         super.onSaveInstanceState(outState)
-        outState.putBoolean(SAVED_CHART_TYPE, presenter.currentIsSemester)
+        outState.putSerializable(SAVED_CHART_TYPE, presenter.currentType)
     }
 
     override fun onDestroyView() {

app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsPresenter.kt

@@ -30,19 +30,19 @@ class GradeStatisticsPresenter @Inject constructor(
 
     private var currentSubjectName: String = "Wszystkie"
 
-    var currentIsSemester = false
+    var currentType: ViewType = ViewType.PARTIAL
         private set
 
-    fun onAttachView(view: GradeStatisticsView, isSemester: Boolean?) {
+    fun onAttachView(view: GradeStatisticsView, type: ViewType?) {
         super.onAttachView(view)
-        currentIsSemester = isSemester ?: false
+        currentType = type ?: ViewType.PARTIAL
         view.initView()
     }
 
     fun onParentViewLoadData(semesterId: Int, forceRefresh: Boolean) {
         currentSemesterId = semesterId
         loadSubjects()
-        loadData(semesterId, currentSubjectName, currentIsSemester, forceRefresh)
+        loadDataByType(semesterId, currentSubjectName, currentType, forceRefresh)
     }
 
     fun onParentViewChangeSemester() {
@@ -50,7 +50,7 @@ class GradeStatisticsPresenter @Inject constructor(
             showProgress(true)
             enableSwipe(false)
             showRefresh(false)
-            showContent(false)
+            showBarContent(false)
             showEmpty(false)
             clearView()
         }
@@ -65,28 +65,30 @@ class GradeStatisticsPresenter @Inject constructor(
     fun onSubjectSelected(name: String?) {
         Timber.i("Select grade stats subject $name")
         view?.run {
-            showContent(false)
+            showBarContent(false)
+            showPieContent(false)
             showProgress(true)
             enableSwipe(false)
             showEmpty(false)
             clearView()
         }
         (subjects.singleOrNull { it.name == name }?.name)?.let {
-            if (it != currentSubjectName) loadData(currentSemesterId, it, currentIsSemester)
+            if (it != currentSubjectName) loadDataByType(currentSemesterId, it, currentType)
         }
     }
 
-    fun onTypeChange(isSemester: Boolean) {
+    fun onTypeChange(type: ViewType) {
-        Timber.i("Select grade stats semester: $isSemester")
+        Timber.i("Select grade stats semester: $type")
         disposable.clear()
         view?.run {
-            showContent(false)
+            showBarContent(false)
+            showPieContent(false)
             showProgress(true)
             enableSwipe(false)
             showEmpty(false)
             clearView()
         }
-        loadData(currentSemesterId, currentSubjectName, isSemester)
+        loadDataByType(currentSemesterId, currentSubjectName, type)
     }
 
     private fun loadSubjects() {
@@ -111,10 +113,18 @@ class GradeStatisticsPresenter @Inject constructor(
         )
     }
 
+    private fun loadDataByType(semesterId: Int, subjectName: String, type: ViewType, forceRefresh: Boolean = false) {
+        currentSubjectName = subjectName
+        currentType = type
+        when (type) {
+            ViewType.SEMESTER -> loadData(semesterId, subjectName, true, forceRefresh)
+            ViewType.PARTIAL -> loadData(semesterId, subjectName, false, forceRefresh)
+            ViewType.POINTS -> loadPointsData(semesterId, subjectName, forceRefresh)
+        }
+    }
+
     private fun loadData(semesterId: Int, subjectName: String, isSemester: Boolean, forceRefresh: Boolean = false) {
         Timber.i("Loading grade stats data started")
-        currentSubjectName = subjectName
-        currentIsSemester = isSemester
         disposable.add(studentRepository.getCurrentStudent()
             .flatMap { semesterRepository.getSemesters(it) }
             .flatMap { gradeStatisticsRepository.getGradesStatistics(it.first { item -> item.semesterId == semesterId }, subjectName, isSemester, forceRefresh) }
@@ -134,14 +144,53 @@ class GradeStatisticsPresenter @Inject constructor(
                 Timber.i("Loading grade stats result: Success")
                 view?.run {
                     showEmpty(it.isEmpty())
-                    showContent(it.isNotEmpty())
+                    showBarContent(false)
-                    updateData(it, preferencesRepository.gradeColorTheme)
+                    showPieContent(it.isNotEmpty())
+                    updatePieData(it, preferencesRepository.gradeColorTheme)
                 }
                 analytics.logEvent("load_grade_statistics", "items" to it.size, "force_refresh" to forceRefresh)
             }) {
                 Timber.e("Loading grade stats result: An exception occurred")
-                view?.run { showEmpty(isViewEmpty) }
+                view?.run { showEmpty(isPieViewEmpty) }
                 errorHandler.dispatch(it)
             })
     }
+
+    private fun loadPointsData(semesterId: Int, subjectName: String, forceRefresh: Boolean = false) {
+        Timber.i("Loading grade points stats data started")
+        disposable.add(studentRepository.getCurrentStudent()
+            .flatMap { semesterRepository.getSemesters(it) }
+            .flatMapMaybe { gradeStatisticsRepository.getGradesPointsStatistics(it.first { item -> item.semesterId == semesterId }, subjectName, forceRefresh) }
+            .subscribeOn(schedulers.backgroundThread)
+            .observeOn(schedulers.mainThread)
+            .doFinally {
+                view?.run {
+                    showRefresh(false)
+                    showProgress(false)
+                    enableSwipe(true)
+                    notifyParentDataLoaded(semesterId)
+                }
+            }
+            .subscribe({
+                Timber.i("Loading grade points stats result: Success")
+                view?.run {
+                    showEmpty(false)
+                    showPieContent(false)
+                    showBarContent(true)
+                    updateBarData(it)
+                }
+                analytics.logEvent("load_grade_points_statistics", "force_refresh" to forceRefresh)
+            }, {
+                Timber.e("Loading grade points stats result: An exception occurred")
+                view?.run { showEmpty(isBarViewEmpty) }
+                errorHandler.dispatch(it)
+            }, {
+                Timber.d("Loading grade points stats result: No point stats found")
+                view?.run {
+                    showBarContent(false)
+                    showEmpty(true)
+                }
+            })
+        )
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsView.kt

@@ -1,17 +1,22 @@
 package io.github.wulkanowy.ui.modules.grade.statistics
 
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.ui.base.BaseView
 
 interface GradeStatisticsView : BaseView {
 
-    val isViewEmpty: Boolean
+    val isPieViewEmpty: Boolean
+
+    val isBarViewEmpty: Boolean
 
     fun initView()
 
     fun updateSubjects(data: ArrayList<String>)
 
-    fun updateData(items: List<GradeStatistics>, theme: String)
+    fun updatePieData(items: List<GradeStatistics>, theme: String)
+
+    fun updateBarData(item: GradePointsStatistics)
 
     fun showSubjects(show: Boolean)
 
@@ -21,7 +26,9 @@ interface GradeStatisticsView : BaseView {
 
     fun clearView()
 
-    fun showContent(show: Boolean)
+    fun showPieContent(show: Boolean)
+
+    fun showBarContent(show: Boolean)
 
     fun showEmpty(show: Boolean)
 

app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/ViewType.kt

@@ -0,0 +1,7 @@
+package io.github.wulkanowy.ui.modules.grade.statistics
+
+enum class ViewType {
+    SEMESTER,
+    PARTIAL,
+    POINTS
+}

app/src/main/java/io/github/wulkanowy/ui/modules/login/LoginActivity.kt

@@ -3,6 +3,7 @@ package io.github.wulkanowy.ui.modules.login
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
+import android.view.MenuItem
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.ui.base.BaseActivity
@@ -23,22 +24,28 @@ class LoginActivity : BaseActivity<LoginPresenter>(), LoginView {
     lateinit var loginAdapter: BaseFragmentPagerAdapter
 
     companion object {
+
         fun getStartIntent(context: Context) = Intent(context, LoginActivity::class.java)
     }
 
-    override val currentViewIndex: Int
+    override val currentViewIndex get() = loginViewpager.currentItem
-        get() = loginViewpager.currentItem
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_login)
+        setSupportActionBar(loginToolbar)
         messageContainer = loginContainer
 
         presenter.onAttachView(this)
     }
 
-    override fun initAdapter() {
+    override fun initView() {
-        loginAdapter.apply {
+        with(requireNotNull(supportActionBar)) {
+            setDisplayHomeAsUpEnabled(true)
+            setDisplayShowTitleEnabled(false)
+        }
+
+        with(loginAdapter) {
             containerId = loginViewpager.id
             addFragments(listOf(
                 LoginFormFragment.newInstance(),
@@ -47,19 +54,24 @@ class LoginActivity : BaseActivity<LoginPresenter>(), LoginView {
             ))
         }
 
-        loginViewpager.run {
+        with(loginViewpager) {
             offscreenPageLimit = 2
             adapter = loginAdapter
-            setOnSelectPageListener { presenter.onViewSelected(it) }
+            setOnSelectPageListener(presenter::onViewSelected)
         }
     }
 
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        if (item.itemId == android.R.id.home) onBackPressed()
+        return true
+    }
+
     override fun switchView(index: Int) {
         loginViewpager.setCurrentItem(index, false)
     }
 
     override fun showActionBar(show: Boolean) {
-        supportActionBar?.apply { if (show) show() else hide() }
+        supportActionBar?.run { if (show) show() else hide() }
     }
 
     override fun onBackPressed() {

app/src/main/java/io/github/wulkanowy/ui/modules/login/LoginErrorHandler.kt

@@ -28,5 +28,6 @@ class LoginErrorHandler @Inject constructor(
     override fun clear() {
         super.clear()
         onBadCredentials = {}
+        onStudentDuplicate = {}
     }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/login/LoginModule.kt

@@ -11,13 +11,12 @@ import io.github.wulkanowy.ui.modules.login.studentselect.LoginStudentSelectFrag
 import io.github.wulkanowy.ui.modules.login.symbol.LoginSymbolFragment
 
 @Suppress("unused")
-@Module
+@Module(includes = [LoginModule.Static::class])
 internal abstract class LoginModule {
 
     @Module
-    companion object {
+    object Static {
 
-        @JvmStatic
         @PerActivity
         @Provides
         fun provideLoginAdapter(activity: LoginActivity) = BaseFragmentPagerAdapter(activity.supportFragmentManager)

app/src/main/java/io/github/wulkanowy/ui/modules/login/LoginPresenter.kt

@@ -16,8 +16,8 @@ class LoginPresenter @Inject constructor(
 
     override fun onAttachView(view: LoginView) {
         super.onAttachView(view)
-        view.run {
+        with(view) {
-            initAdapter()
+            initView()
             showActionBar(false)
         }
         Timber.i("Login view was initialized")
@@ -48,8 +48,8 @@ class LoginPresenter @Inject constructor(
     fun onViewSelected(index: Int) {
         view?.apply {
             when (index) {
-                0, 1 -> showActionBar(false)
+                0 -> showActionBar(false)
-                2 -> showActionBar(true)
+                1, 2 -> showActionBar(true)
             }
         }
     }

app/src/main/java/io/github/wulkanowy/ui/modules/login/LoginView.kt

@@ -7,7 +7,7 @@ interface LoginView : BaseView {
 
     val currentViewIndex: Int
 
-    fun initAdapter()
+    fun initView()
 
     fun switchView(index: Int)
 

app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormFragment.kt

@@ -9,7 +9,6 @@ import android.view.View.VISIBLE
 import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo.IME_ACTION_DONE
 import android.view.inputmethod.EditorInfo.IME_NULL
-import android.widget.ArrayAdapter
 import androidx.core.widget.doOnTextChanged
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Student
@@ -17,6 +16,7 @@ import io.github.wulkanowy.ui.base.BaseFragment
 import io.github.wulkanowy.ui.modules.login.LoginActivity
 import io.github.wulkanowy.utils.AppInfo
 import io.github.wulkanowy.utils.hideSoftInput
+import io.github.wulkanowy.utils.openEmail
 import io.github.wulkanowy.utils.openInternetBrowser
 import io.github.wulkanowy.utils.showSoftInput
 import kotlinx.android.synthetic.main.fragment_login_form.*
@@ -38,8 +38,7 @@ class LoginFormFragment : BaseFragment(), LoginFormView {
 
     override val formPassValue get() = loginFormPass.text.toString()
 
-    override val formHostValue
+    override val formHostValue get() = hostValues.getOrNull(hostKeys.indexOf(loginFormHost.text.toString()))
-        get() = hostValues.getOrNull(hostKeys.indexOf(loginFormHost.text.toString()))
 
     private lateinit var hostKeys: Array<String>
 
@@ -55,26 +54,24 @@ class LoginFormFragment : BaseFragment(), LoginFormView {
     }
 
     override fun initView() {
-        hostKeys = resources.getStringArray(R.array.endpoints_keys)
+        hostKeys = resources.getStringArray(R.array.hosts_keys)
-        hostValues = resources.getStringArray(R.array.endpoints_values)
+        hostValues = resources.getStringArray(R.array.hosts_values)
 
         loginFormName.doOnTextChanged { _, _, _, _ -> presenter.onNameTextChanged() }
         loginFormPass.doOnTextChanged { _, _, _, _ -> presenter.onPassTextChanged() }
         loginFormHost.setOnItemClickListener { _, _, _, _ -> presenter.onHostSelected() }
         loginFormSignIn.setOnClickListener { presenter.onSignInClick() }
         loginFormPrivacyLink.setOnClickListener { presenter.onPrivacyLinkClick() }
+        loginFormContactDiscord.setOnClickListener { presenter.onDiscordClick() }
+        loginFormContactEmail.setOnClickListener { presenter.onEmailClick() }
 
         loginFormPass.setOnEditorActionListener { _, id, _ ->
             if (id == IME_ACTION_DONE || id == IME_NULL) loginFormSignIn.callOnClick() else false
         }
 
         with(loginFormHost) {
-            //Bug with filter in ExposedDropdownMenu on restoring state
-            isSaveEnabled = false
-
             setText(hostKeys.getOrElse(0) { "" })
-            setAdapter(ArrayAdapter(context, R.layout.support_simple_spinner_dropdown_item, hostKeys))
+            setAdapter(LoginSymbolAdapter(context, R.layout.support_simple_spinner_dropdown_item, hostKeys))
-            keyListener = null
         }
     }
 
@@ -147,21 +144,33 @@ class LoginFormFragment : BaseFragment(), LoginFormView {
         loginFormPrivacyLink.visibility = VISIBLE
     }
 
-    override fun notifyParentAccountLogged(students: List<Student>) {
+    override fun notifyParentAccountLogged(students: List<Student>, loginData: Triple<String, String, String>) {
-        (activity as? LoginActivity)?.onFormFragmentAccountLogged(students,
+        (activity as? LoginActivity)?.onFormFragmentAccountLogged(students, loginData)
-            Triple(
-                loginFormName.text.toString(),
-                loginFormPass.text.toString(),
-                resources.getStringArray(R.array.endpoints_values)[1]
-            ))
     }
 
     override fun openPrivacyPolicyPage() {
         context?.openInternetBrowser("https://wulkanowy.github.io/polityka-prywatnosci.html", ::showMessage)
     }
 
+    override fun showContact(show: Boolean) {
+        loginFormContact.visibility = if (show) VISIBLE else GONE
+    }
+
     override fun onDestroyView() {
         super.onDestroyView()
         presenter.onDetachView()
     }
+
+    override fun openDiscordInvite() {
+        context?.openInternetBrowser("https://discord.gg/vccAQBr", ::showMessage)
+    }
+
+    override fun openEmail() {
+        context?.openEmail(
+            requireContext().getString(R.string.login_email_intent_title),
+            "wulkanowyinc@gmail.com",
+            requireContext().getString(R.string.login_email_subject),
+            requireContext().getString(R.string.login_email_text, appInfo.systemModel, appInfo.systemVersion.toString(), appInfo.versionName)
+        )
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormPresenter.kt

@@ -22,6 +22,7 @@ class LoginFormPresenter @Inject constructor(
         super.onAttachView(view)
         view.run {
             initView()
+            showContact(false)
             if (appInfo.isDebug) showVersion() else showPrivacyPolicy()
 
             loginErrorHandler.onBadCredentials = {
@@ -40,7 +41,9 @@ class LoginFormPresenter @Inject constructor(
         view?.apply {
             clearPassError()
             clearNameError()
-            if (formHostValue?.contains("fakelog") == true) setCredentials("jan@fakelog.cf", "jan123")
+            if (formHostValue?.contains("fakelog") == true) {
+                setCredentials("jan@fakelog.cf", "jan123")
+            }
         }
     }
 
@@ -79,14 +82,23 @@ class LoginFormPresenter @Inject constructor(
             .subscribe({
                 Timber.i("Login result: Success")
                 analytics.logEvent("registration_form", "success" to true, "students" to it.size, "endpoint" to endpoint, "error" to "No error")
-                view?.notifyParentAccountLogged(it)
+                view?.notifyParentAccountLogged(it, Triple(email, password, endpoint))
             }, {
                 Timber.i("Login result: An exception occurred")
                 analytics.logEvent("registration_form", "success" to false, "students" to -1, "endpoint" to endpoint, "error" to it.message.ifNullOrBlank { "No message" })
                 loginErrorHandler.dispatch(it)
+                view?.showContact(true)
             }))
     }
 
+    fun onDiscordClick() {
+        view?.openDiscordInvite()
+    }
+
+    fun onEmailClick() {
+        view?.openEmail()
+    }
+
     private fun validateCredentials(login: String, password: String): Boolean {
         var isCorrect = true
 

app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormView.kt

@@ -39,7 +39,13 @@ interface LoginFormView : BaseView {
 
     fun showPrivacyPolicy()
 
-    fun notifyParentAccountLogged(students: List<Student>)
+    fun notifyParentAccountLogged(students: List<Student>, loginData: Triple<String, String, String>)
 
     fun openPrivacyPolicyPage()
+
+    fun showContact(show: Boolean)
+
+    fun openDiscordInvite()
+
+    fun openEmail()
 }

app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginSymbolAdapter.kt

@@ -0,0 +1,16 @@
+package io.github.wulkanowy.ui.modules.login.form
+
+import android.content.Context
+import android.widget.ArrayAdapter
+import android.widget.Filter
+
+class LoginSymbolAdapter(context: Context, resource: Int, objects: Array<out String>) :
+    ArrayAdapter<String>(context, resource, objects) {
+
+    override fun getFilter() = object : Filter() {
+
+        override fun performFiltering(constraint: CharSequence?) = null
+
+        override fun publishResults(constraint: CharSequence?, results: FilterResults?) {}
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectFragment.kt

@@ -13,6 +13,9 @@ import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.ui.base.BaseFragment
 import io.github.wulkanowy.ui.modules.main.MainActivity
+import io.github.wulkanowy.utils.AppInfo
+import io.github.wulkanowy.utils.openEmail
+import io.github.wulkanowy.utils.openInternetBrowser
 import io.github.wulkanowy.utils.setOnItemClickListener
 import kotlinx.android.synthetic.main.fragment_login_student_select.*
 import java.io.Serializable
@@ -26,6 +29,9 @@ class LoginStudentSelectFragment : BaseFragment(), LoginStudentSelectView {
     @Inject
     lateinit var loginAdapter: FlexibleAdapter<AbstractFlexibleItem<*>>
 
+    @Inject
+    lateinit var appInfo: AppInfo
+
     companion object {
         const val SAVED_STUDENTS = "STUDENTS"
 
@@ -44,6 +50,8 @@ class LoginStudentSelectFragment : BaseFragment(), LoginStudentSelectView {
     override fun initView() {
         loginStudentSelectSignIn.setOnClickListener { presenter.onSignIn() }
         loginAdapter.apply { setOnItemClickListener { presenter.onItemSelected(it) } }
+        loginStudentSelectContactDiscord.setOnClickListener { presenter.onDiscordClick() }
+        loginStudentSelectContactEmail.setOnClickListener { presenter.onEmailClick() }
 
         loginStudentSelectRecycler.apply {
             adapter = loginAdapter
@@ -80,8 +88,25 @@ class LoginStudentSelectFragment : BaseFragment(), LoginStudentSelectView {
         outState.putSerializable(SAVED_STUDENTS, presenter.students as Serializable)
     }
 
+    override fun showContact(show: Boolean) {
+        loginStudentSelectContact.visibility = if (show) VISIBLE else GONE
+    }
+
     override fun onDestroyView() {
         presenter.onDetachView()
         super.onDestroyView()
     }
+
+    override fun openDiscordInvite() {
+        context?.openInternetBrowser("https://discord.gg/vccAQBr", ::showMessage)
+    }
+
+    override fun openEmail() {
+        context?.openEmail(
+            requireContext().getString(R.string.login_email_intent_title),
+            "wulkanowyinc@gmail.com",
+            requireContext().getString(R.string.login_email_subject),
+            requireContext().getString(R.string.login_email_text, appInfo.systemModel, appInfo.systemVersion.toString(), appInfo.versionName)
+        )
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenter.kt

@@ -27,6 +27,7 @@ class LoginStudentSelectPresenter @Inject constructor(
         super.onAttachView(view)
         view.run {
             initView()
+            showContact(false)
             enableSignIn(false)
             loginErrorHandler.onStudentDuplicate = {
                 showMessage(it)
@@ -88,7 +89,16 @@ class LoginStudentSelectPresenter @Inject constructor(
                 view?.apply {
                     showProgress(false)
                     showContent(true)
+                    showContact(true)
                 }
             }))
     }
+
+    fun onDiscordClick() {
+        view?.openDiscordInvite()
+    }
+
+    fun onEmailClick() {
+        view?.openEmail()
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectView.kt

@@ -15,4 +15,10 @@ interface LoginStudentSelectView : BaseView {
     fun showContent(show: Boolean)
 
     fun enableSignIn(enable: Boolean)
+
+    fun showContact(show: Boolean)
+
+    fun openDiscordInvite()
+
+    fun openEmail()
 }

app/src/main/java/io/github/wulkanowy/ui/modules/login/symbol/LoginSymbolFragment.kt

@@ -14,7 +14,10 @@ import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.ui.base.BaseFragment
 import io.github.wulkanowy.ui.modules.login.LoginActivity
+import io.github.wulkanowy.utils.AppInfo
 import io.github.wulkanowy.utils.hideSoftInput
+import io.github.wulkanowy.utils.openEmail
+import io.github.wulkanowy.utils.openInternetBrowser
 import io.github.wulkanowy.utils.showSoftInput
 import kotlinx.android.synthetic.main.fragment_login_symbol.*
 import javax.inject.Inject
@@ -24,6 +27,9 @@ class LoginSymbolFragment : BaseFragment(), LoginSymbolView {
     @Inject
     lateinit var presenter: LoginSymbolPresenter
 
+    @Inject
+    lateinit var appInfo: AppInfo
+
     companion object {
         private const val SAVED_LOGIN_DATA = "LOGIN_DATA"
 
@@ -44,6 +50,8 @@ class LoginSymbolFragment : BaseFragment(), LoginSymbolView {
 
     override fun initView() {
         loginSymbolSignIn.setOnClickListener { presenter.attemptLogin(loginSymbolName.text.toString()) }
+        loginSymbolContactDiscord.setOnClickListener { presenter.onDiscordClick() }
+        loginSymbolContactEmail.setOnClickListener { presenter.onEmailClick() }
 
         loginSymbolName.doOnTextChanged { _, _, _, _ -> presenter.onSymbolTextChanged() }
 
@@ -109,8 +117,25 @@ class LoginSymbolFragment : BaseFragment(), LoginSymbolView {
         outState.putSerializable(SAVED_LOGIN_DATA, presenter.loginData)
     }
 
+    override fun showContact(show: Boolean) {
+        loginSymbolContact.visibility = if (show) VISIBLE else GONE
+    }
+
     override fun onDestroyView() {
         super.onDestroyView()
         presenter.onDetachView()
     }
+
+    override fun openDiscordInvite() {
+        context?.openInternetBrowser("https://discord.gg/vccAQBr", ::showMessage)
+    }
+
+    override fun openEmail() {
+        context?.openEmail(
+            requireContext().getString(R.string.login_email_intent_title),
+            "wulkanowyinc@gmail.com",
+            requireContext().getString(R.string.login_email_subject),
+            requireContext().getString(R.string.login_email_text, appInfo.systemModel, appInfo.systemVersion.toString(), appInfo.versionName)
+        )
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/login/symbol/LoginSymbolPresenter.kt

@@ -23,7 +23,10 @@ class LoginSymbolPresenter @Inject constructor(
     @Suppress("UNCHECKED_CAST")
     fun onAttachView(view: LoginSymbolView, savedLoginData: Serializable?) {
         super.onAttachView(view)
-        view.initView()
+        view.run {
+            initView()
+            showContact(false)
+        }
         if (savedLoginData is Triple<*, *, *>) {
             loginData = savedLoginData as Triple<String, String, String>
         }
@@ -64,6 +67,7 @@ class LoginSymbolPresenter @Inject constructor(
                         if (it.isEmpty()) {
                             Timber.i("Login with symbol result: Empty student list")
                             setErrorSymbolIncorrect()
+                            view?.showContact(true)
                         } else {
                             Timber.i("Login with symbol result: Success")
                             notifyParentAccountLogged(it)
@@ -73,6 +77,7 @@ class LoginSymbolPresenter @Inject constructor(
                     Timber.i("Login with symbol result: An exception occurred")
                     analytics.logEvent("registration_symbol", "success" to false, "students" to -1, "endpoint" to loginData?.third, "symbol" to symbol, "error" to it.message.ifNullOrBlank { "No message" })
                     loginErrorHandler.dispatch(it)
+                    view?.showContact(true)
                 }))
     }
 
@@ -83,4 +88,12 @@ class LoginSymbolPresenter @Inject constructor(
             showSoftKeyboard()
         }
     }
+
+    fun onDiscordClick() {
+        view?.openDiscordInvite()
+    }
+
+    fun onEmailClick() {
+        view?.openEmail()
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/login/symbol/LoginSymbolView.kt

@@ -26,4 +26,10 @@ interface LoginSymbolView : BaseView {
     fun showContent(show: Boolean)
 
     fun notifyParentAccountLogged(students: List<Student>)
+
+    fun showContact(show: Boolean)
+
+    fun openDiscordInvite()
+
+    fun openEmail()
 }

app/src/main/java/io/github/wulkanowy/ui/modules/luckynumberwidget/LuckyNumberWidgetConfigureActivity.kt

@@ -6,6 +6,7 @@ import android.appwidget.AppWidgetManager.EXTRA_APPWIDGET_IDS
 import android.content.Intent
 import android.os.Bundle
 import android.widget.Toast
+import androidx.appcompat.app.AlertDialog
 import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.davidea.flexibleadapter.common.SmoothScrollLinearLayoutManager
 import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
@@ -25,6 +26,8 @@ class LuckyNumberWidgetConfigureActivity : BaseActivity<LuckyNumberWidgetConfigu
     @Inject
     override lateinit var presenter: LuckyNumberWidgetConfigurePresenter
 
+    private var dialog: AlertDialog? = null
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setResult(RESULT_CANCELED)
@@ -36,11 +39,27 @@ class LuckyNumberWidgetConfigureActivity : BaseActivity<LuckyNumberWidgetConfigu
     }
 
     override fun initView() {
-        widgetConfigureRecycler.apply {
+        with(widgetConfigureRecycler) {
             adapter = configureAdapter
             layoutManager = SmoothScrollLinearLayoutManager(context)
         }
-        configureAdapter.setOnItemClickListener { presenter.onItemSelect(it) }
+
+        configureAdapter.setOnItemClickListener(presenter::onItemSelect)
+    }
+
+    override fun showThemeDialog() {
+        val items = arrayOf(
+            getString(R.string.widget_timetable_theme_light),
+            getString(R.string.widget_timetable_theme_dark)
+        )
+
+       dialog =  AlertDialog.Builder(this, R.style.WulkanowyTheme_WidgetAccountSwitcher)
+            .setTitle(R.string.widget_timetable_theme_title)
+           .setOnDismissListener { presenter.onDismissThemeView() }
+            .setSingleChoiceItems(items, -1) { _, which ->
+                presenter.onThemeSelect(which)
+            }
+            .show()
     }
 
     override fun updateData(data: List<LuckyNumberWidgetConfigureItem>) {
@@ -70,4 +89,9 @@ class LuckyNumberWidgetConfigureActivity : BaseActivity<LuckyNumberWidgetConfigu
     override fun openLoginView() {
         startActivity(LoginActivity.getStartIntent(this))
     }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        dialog?.dismiss()
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/luckynumberwidget/LuckyNumberWidgetConfigureItem.kt

@@ -2,6 +2,7 @@ package io.github.wulkanowy.ui.modules.luckynumberwidget
 
 import android.annotation.SuppressLint
 import android.view.View
+import androidx.core.graphics.ColorUtils
 import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
 import eu.davidea.flexibleadapter.items.IFlexible
@@ -9,6 +10,7 @@ import eu.davidea.viewholders.FlexibleViewHolder
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.ui.modules.timetablewidget.TimetableWidgetConfigureItem
+import io.github.wulkanowy.utils.getThemeAttrColor
 import kotlinx.android.extensions.LayoutContainer
 import kotlinx.android.synthetic.main.item_account.*
 
@@ -17,16 +19,19 @@ class LuckyNumberWidgetConfigureItem(var student: Student, val isCurrent: Boolea
 
     override fun getLayoutRes() = R.layout.item_account
 
-    override fun createViewHolder(view: View, adapter: FlexibleAdapter<IFlexible<*>>): ViewHolder {
+    override fun createViewHolder(view: View, adapter: FlexibleAdapter<IFlexible<*>>) = ViewHolder(view, adapter)
-        return ViewHolder(view, adapter)
-    }
 
     @SuppressLint("SetTextI18n")
     override fun bindViewHolder(adapter: FlexibleAdapter<IFlexible<*>>, holder: ViewHolder, position: Int, payloads: MutableList<Any>) {
-        holder.apply {
+        val context = holder.contentView.context
+
+        val colorImage = if (isCurrent) context.getThemeAttrColor(R.attr.colorPrimary)
+        else ColorUtils.setAlphaComponent(context.getThemeAttrColor(R.attr.colorOnSurface), 153)
+
+        with(holder) {
             accountItemName.text = "${student.studentName} ${student.className}"
             accountItemSchool.text = student.schoolName
-            accountItemImage.setBackgroundResource(if (isCurrent) R.drawable.ic_account_circular_border else 0)
+            accountItemImage.setColorFilter(colorImage)
         }
     }
 
@@ -47,8 +52,9 @@ class LuckyNumberWidgetConfigureItem(var student: Student, val isCurrent: Boolea
         return result
     }
 
-    class ViewHolder(view: View, adapter: FlexibleAdapter<*>) : FlexibleViewHolder(view, adapter), LayoutContainer {
+    class ViewHolder(view: View, adapter: FlexibleAdapter<*>) : FlexibleViewHolder(view, adapter),
-        override val containerView: View
+        LayoutContainer {
-            get() = contentView
+
+        override val containerView: View? get() = contentView
     }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/luckynumberwidget/LuckyNumberWidgetConfigurePresenter.kt

@@ -7,6 +7,7 @@ import io.github.wulkanowy.data.repositories.student.StudentRepository
 import io.github.wulkanowy.ui.base.BasePresenter
 import io.github.wulkanowy.ui.base.ErrorHandler
 import io.github.wulkanowy.ui.modules.luckynumberwidget.LuckyNumberWidgetProvider.Companion.getStudentWidgetKey
+import io.github.wulkanowy.ui.modules.luckynumberwidget.LuckyNumberWidgetProvider.Companion.getThemeWidgetKey
 import io.github.wulkanowy.utils.SchedulersProvider
 import javax.inject.Inject
 
@@ -19,6 +20,8 @@ class LuckyNumberWidgetConfigurePresenter @Inject constructor(
 
     private var appWidgetId: Int? = null
 
+    private var selectedStudent: Student? = null
+
     fun onAttachView(view: LuckyNumberWidgetConfigureView, appWidgetId: Int?) {
         super.onAttachView(view)
         this.appWidgetId = appWidgetId
@@ -28,10 +31,22 @@ class LuckyNumberWidgetConfigurePresenter @Inject constructor(
 
     fun onItemSelect(item: AbstractFlexibleItem<*>) {
         if (item is LuckyNumberWidgetConfigureItem) {
-            registerStudent(item.student)
+            selectedStudent = item.student
+            view?.showThemeDialog()
         }
     }
 
+    fun onThemeSelect(index: Int) {
+        appWidgetId?.let {
+            sharedPref.putLong(getThemeWidgetKey(it), index.toLong())
+        }
+        registerStudent(selectedStudent)
+    }
+
+    fun onDismissThemeView(){
+        view?.finishView()
+    }
+
     private fun loadData() {
         disposable.add(studentRepository.getSavedStudents(false)
             .map { it to appWidgetId?.let { id -> sharedPref.getLong(getStudentWidgetKey(id), 0) } }
@@ -49,12 +64,14 @@ class LuckyNumberWidgetConfigurePresenter @Inject constructor(
             }, { errorHandler.dispatch(it) }))
     }
 
-    private fun registerStudent(student: Student) {
+    private fun registerStudent(student: Student?) {
-        appWidgetId?.also {
+        requireNotNull(student)
-            sharedPref.putLong(getStudentWidgetKey(it), student.id)
+
-            view?.apply {
+        appWidgetId?.let { id ->
-                updateLuckyNumberWidget(it)
+            sharedPref.putLong(getStudentWidgetKey(id), student.id)
-                setSuccessResult(it)
+            view?.run {
+                updateLuckyNumberWidget(id)
+                setSuccessResult(id)
             }
         }
         view?.finishView()

app/src/main/java/io/github/wulkanowy/ui/modules/luckynumberwidget/LuckyNumberWidgetConfigureView.kt

@@ -1,12 +1,13 @@
 package io.github.wulkanowy.ui.modules.luckynumberwidget
 
 import io.github.wulkanowy.ui.base.BaseView
-import io.github.wulkanowy.ui.modules.timetablewidget.TimetableWidgetConfigureItem
 
 interface LuckyNumberWidgetConfigureView : BaseView {
 
     fun initView()
 
+    fun showThemeDialog()
+
     fun updateData(data: List<LuckyNumberWidgetConfigureItem>)
 
     fun updateLuckyNumberWidget(widgetId: Int)

app/src/main/java/io/github/wulkanowy/ui/modules/luckynumberwidget/LuckyNumberWidgetProvider.kt

@@ -55,7 +55,10 @@ class LuckyNumberWidgetProvider : BroadcastReceiver() {
     lateinit var sharedPref: SharedPrefProvider
 
     companion object {
+
         fun getStudentWidgetKey(appWidgetId: Int) = "lucky_number_widget_student_$appWidgetId"
+
+        fun getThemeWidgetKey(appWidgetId: Int) = "lucky_number_widget_theme_$appWidgetId"
     }
 
     @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
@@ -70,24 +73,26 @@ class LuckyNumberWidgetProvider : BroadcastReceiver() {
 
     private fun onUpdate(context: Context, intent: Intent) {
         intent.getIntArrayExtra(EXTRA_APPWIDGET_IDS)?.forEach { appWidgetId ->
-            RemoteViews(context.packageName, R.layout.widget_luckynumber).apply {
+            val savedTheme = sharedPref.getLong(getThemeWidgetKey(appWidgetId), 0)
-                setTextViewText(R.id.luckyNumberWidgetNumber,
+            val layoutId = if (savedTheme == 0L) R.layout.widget_luckynumber else R.layout.widget_luckynumber_dark
-                    getLuckyNumber(sharedPref.getLong(getStudentWidgetKey(appWidgetId), 0), appWidgetId)?.luckyNumber?.toString() ?: "#"
+
-                )
+            val luckyNumber = getLuckyNumber(sharedPref.getLong(getStudentWidgetKey(appWidgetId), 0), appWidgetId)
-                setOnClickPendingIntent(R.id.luckyNumberWidgetContainer,
+            val appIntent = PendingIntent.getActivity(context, MainView.Section.LUCKY_NUMBER.id,
-                    PendingIntent.getActivity(context, MainView.Section.LUCKY_NUMBER.id,
+                MainActivity.getStartIntent(context, MainView.Section.LUCKY_NUMBER, true), FLAG_UPDATE_CURRENT)
-                        MainActivity.getStartIntent(context, MainView.Section.LUCKY_NUMBER, true), FLAG_UPDATE_CURRENT))
+
-            }.also {
+            val remoteView = RemoteViews(context.packageName, layoutId).apply {
-                setStyles(it, intent)
+                setTextViewText(R.id.luckyNumberWidgetNumber, luckyNumber?.luckyNumber?.toString() ?: "#")
-                appWidgetManager.updateAppWidget(appWidgetId, it)
+                setOnClickPendingIntent(R.id.luckyNumberWidgetContainer, appIntent)
             }
+
+            setStyles(remoteView, intent)
+            appWidgetManager.updateAppWidget(appWidgetId, remoteView)
         }
     }
 
     private fun onDelete(intent: Intent) {
-        intent.getIntExtra(EXTRA_APPWIDGET_ID, 0).let {
+        val appWidgetId = intent.getIntExtra(EXTRA_APPWIDGET_ID, 0)
-            if (it != 0) sharedPref.delete(getStudentWidgetKey(it))
+        if (appWidgetId != 0) sharedPref.delete(getStudentWidgetKey(appWidgetId))
-        }
     }
 
     private fun getLuckyNumber(studentId: Long, appWidgetId: Int): LuckyNumber? {
@@ -96,19 +101,17 @@ class LuckyNumberWidgetProvider : BroadcastReceiver() {
                 .filter { true }
                 .flatMap { studentRepository.getSavedStudents().toMaybe() }
                 .flatMap { students ->
-                    students.singleOrNull { student -> student.id == studentId }
+                    val student = students.singleOrNull { student -> student.id == studentId }
-                        .let { student ->
+                    when {
-                            when {
+                        student != null -> Maybe.just(student)
-                                student != null -> Maybe.just(student)
+                        studentId != 0L -> {
-                                studentId != 0L -> {
+                            studentRepository.isCurrentStudentSet()
-                                    studentRepository.isCurrentStudentSet()
+                                .filter { true }
-                                        .filter { true }
+                                .flatMap { studentRepository.getCurrentStudent(false).toMaybe() }
-                                        .flatMap { studentRepository.getCurrentStudent(false).toMaybe() }
+                                .doOnSuccess { sharedPref.putLong(getStudentWidgetKey(appWidgetId), it.id) }
-                                        .doOnSuccess { sharedPref.putLong(getStudentWidgetKey(appWidgetId), it.id) }
-                                }
-                                else -> Maybe.empty()
-                            }
                         }
+                        else -> Maybe.empty()
+                    }
                 }
                 .flatMap { semesterRepository.getCurrentSemester(it).toMaybe() }
                 .flatMap { luckyNumberRepository.getLuckyNumber(it) }
@@ -123,11 +126,14 @@ class LuckyNumberWidgetProvider : BroadcastReceiver() {
     }
 
     private fun onOptionsChange(context: Context, intent: Intent) {
-        intent.extras?.let { extras ->
+        intent.extras?.getInt(EXTRA_APPWIDGET_ID)?.let { appWidgetId ->
-            RemoteViews(context.packageName, R.layout.widget_luckynumber).apply {
+            val savedTheme = sharedPref.getLong(getThemeWidgetKey(appWidgetId), 0)
-                setStyles(this, intent)
+            val layoutId = if (savedTheme == 0L) R.layout.widget_luckynumber else R.layout.widget_luckynumber_dark
-                appWidgetManager.updateAppWidget(extras.getInt(EXTRA_APPWIDGET_ID), this)
+
-            }
+            val remoteView = RemoteViews(context.packageName, layoutId)
+
+            setStyles(remoteView, intent)
+            appWidgetManager.updateAppWidget(appWidgetId, remoteView)
         }
     }
 
@@ -144,7 +150,7 @@ class LuckyNumberWidgetProvider : BroadcastReceiver() {
             // 1x1
             maxWidth < 150 && maxHeight < 110 -> {
                 Timber.d("Lucky number widget size: 1x1")
-                views.run {
+                with(views) {
                     setViewVisibility(R.id.luckyNumberWidgetImageTop, GONE)
                     setViewVisibility(R.id.luckyNumberWidgetImageLeft, GONE)
                     setViewVisibility(R.id.luckyNumberWidgetTitle, GONE)
@@ -154,7 +160,7 @@ class LuckyNumberWidgetProvider : BroadcastReceiver() {
             // 1x2
             maxWidth < 150 && maxHeight > 110 -> {
                 Timber.d("Lucky number widget size: 1x2")
-                views.run {
+                with(views) {
                     setViewVisibility(R.id.luckyNumberWidgetImageTop, VISIBLE)
                     setViewVisibility(R.id.luckyNumberWidgetImageLeft, GONE)
                     setViewVisibility(R.id.luckyNumberWidgetTitle, GONE)
@@ -164,7 +170,7 @@ class LuckyNumberWidgetProvider : BroadcastReceiver() {
             // 2x1
             maxWidth >= 150 && maxHeight <= 110 -> {
                 Timber.d("Lucky number widget size: 2x1")
-                views.run {
+                with(views) {
                     setViewVisibility(R.id.luckyNumberWidgetImageTop, GONE)
                     setViewVisibility(R.id.luckyNumberWidgetImageLeft, VISIBLE)
                     setViewVisibility(R.id.luckyNumberWidgetTitle, GONE)
@@ -174,7 +180,7 @@ class LuckyNumberWidgetProvider : BroadcastReceiver() {
             // 2x2 and bigger
             else -> {
                 Timber.d("Lucky number widget size: 2x2 and bigger")
-                views.run {
+                with(views) {
                     setViewVisibility(R.id.luckyNumberWidgetImageTop, GONE)
                     setViewVisibility(R.id.luckyNumberWidgetImageLeft, GONE)
                     setViewVisibility(R.id.luckyNumberWidgetTitle, VISIBLE)

app/src/main/java/io/github/wulkanowy/ui/modules/main/MainModule.kt

@@ -26,25 +26,25 @@ import io.github.wulkanowy.ui.modules.mobiledevice.MobileDeviceModule
 import io.github.wulkanowy.ui.modules.mobiledevice.token.MobileDeviceTokenDialog
 import io.github.wulkanowy.ui.modules.more.MoreFragment
 import io.github.wulkanowy.ui.modules.note.NoteFragment
+import io.github.wulkanowy.ui.modules.schoolandteachers.SchoolAndTeachersFragment
+import io.github.wulkanowy.ui.modules.schoolandteachers.SchoolAndTeachersModule
 import io.github.wulkanowy.ui.modules.settings.SettingsFragment
 import io.github.wulkanowy.ui.modules.timetable.TimetableFragment
 import io.github.wulkanowy.ui.modules.timetable.completed.CompletedLessonsFragment
 
 @Suppress("unused")
-@Module
+@Module(includes = [MainModule.Static::class])
 abstract class MainModule {
 
     @Module
-    companion object {
+    object Static {
 
-        @JvmStatic
         @Provides
         fun provideFragNavController(activity: MainActivity): FragNavController {
             return FragNavController(activity.supportFragmentManager, R.id.mainFragmentContainer)
         }
 
         //In activities must be injected as Lazy
-        @JvmStatic
         @Provides
         fun provideElevationOverlayProvider(activity: MainActivity) = ElevationOverlayProvider(activity)
     }
@@ -120,4 +120,8 @@ abstract class MainModule {
     @PerFragment
     @ContributesAndroidInjector(modules = [LicenseModule::class])
     abstract fun bindLicenseFragment(): LicenseFragment
+
+    @PerFragment
+    @ContributesAndroidInjector(modules = [SchoolAndTeachersModule::class])
+    abstract fun bindSchoolAndTeachersFragment(): SchoolAndTeachersFragment
 }

app/src/main/java/io/github/wulkanowy/ui/modules/main/MainPresenter.kt

@@ -7,6 +7,7 @@ import io.github.wulkanowy.ui.base.BasePresenter
 import io.github.wulkanowy.ui.base.ErrorHandler
 import io.github.wulkanowy.ui.modules.main.MainView.Section.GRADE
 import io.github.wulkanowy.ui.modules.main.MainView.Section.MESSAGE
+import io.github.wulkanowy.ui.modules.main.MainView.Section.SCHOOL
 import io.github.wulkanowy.utils.FirebaseAnalyticsHelper
 import io.github.wulkanowy.utils.SchedulersProvider
 import timber.log.Timber
@@ -38,7 +39,7 @@ class MainPresenter @Inject constructor(
 
     fun onViewChange(section: MainView.Section?) {
         view?.apply {
-            showActionBarElevation(section != GRADE && section != MESSAGE)
+            showActionBarElevation(section != GRADE && section != MESSAGE && section != SCHOOL)
             currentViewTitle?.let { setViewTitle(it) }
             currentStackSize?.let {
                 if (it > 1) showHomeArrow(true)

app/src/main/java/io/github/wulkanowy/ui/modules/main/MainView.kt

@@ -51,6 +51,7 @@ interface MainView : BaseView {
         NOTE(7),
         LUCKY_NUMBER(8),
         SETTINGS(9),
-        ABOUT(10)
+        ABOUT(10),
+        SCHOOL(11)
     }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/message/MessageModule.kt

@@ -9,13 +9,12 @@ import io.github.wulkanowy.ui.base.BaseFragmentPagerAdapter
 import io.github.wulkanowy.ui.modules.message.tab.MessageTabFragment
 
 @Suppress("unused")
-@Module
+@Module(includes = [MessageModule.Static::class])
 abstract class MessageModule {
 
     @Module
-    companion object {
+    object Static {
 
-        @JvmStatic
         @PerFragment
         @Provides
         fun provideMessageAdapter(fragment: MessageFragment) = BaseFragmentPagerAdapter(fragment.childFragmentManager)

app/src/main/java/io/github/wulkanowy/ui/modules/message/preview/MessagePreviewFragment.kt

@@ -143,7 +143,7 @@ class MessagePreviewFragment : BaseFragment(), MessagePreviewView, MainView.Titl
     }
 
     override fun notifyParentMessageDeleted(message: Message) {
-        fragmentManager?.fragments?.forEach { if (it is MessageFragment) it.onDeleteMessage(message) }
+        parentFragmentManager.fragments.forEach { if (it is MessageFragment) it.onDeleteMessage(message) }
     }
 
     override fun onSaveInstanceState(outState: Bundle) {

app/src/main/java/io/github/wulkanowy/ui/modules/mobiledevice/token/MobileDeviceTokenDialog.kt

@@ -1,5 +1,7 @@
 package io.github.wulkanowy.ui.modules.mobiledevice.token
 
+import android.content.ClipData
+import android.content.ClipboardManager
 import android.graphics.BitmapFactory
 import android.os.Bundle
 import android.util.Base64
@@ -9,6 +11,7 @@ import android.view.View.GONE
 import android.view.View.VISIBLE
 import android.view.ViewGroup
 import android.widget.Toast
+import androidx.core.content.getSystemService
 import dagger.android.support.DaggerDialogFragment
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.pojos.MobileDeviceToken
@@ -45,9 +48,18 @@ class MobileDeviceTokenDialog : DaggerDialogFragment(), MobileDeviceTokenVIew {
     }
 
     override fun updateData(token: MobileDeviceToken) {
-        mobileDeviceDialogToken.text = token.token
+        with(mobileDeviceDialogToken) {
-        mobileDeviceDialogSymbol.text = token.symbol
+            text = token.token
-        mobileDeviceDialogPin.text = token.pin
+            setOnClickListener { clickCopy(token.token) }
+        }
+        with(mobileDeviceDialogSymbol) {
+            text = token.symbol
+            setOnClickListener { clickCopy(token.symbol) }
+        }
+        with(mobileDeviceDialogPin) {
+            text = token.pin
+            setOnClickListener { clickCopy(token.pin) }
+        }
 
         mobileDeviceQr.setImageBitmap(Base64.decode(token.qr, Base64.DEFAULT).let {
             BitmapFactory.decodeByteArray(it, 0, it.size)
@@ -86,4 +98,10 @@ class MobileDeviceTokenDialog : DaggerDialogFragment(), MobileDeviceTokenVIew {
         presenter.onDetachView()
         super.onDestroyView()
     }
+
+    fun clickCopy(text: String) {
+        val clip = ClipData.newPlainText("wulkanowy", text)
+        activity?.getSystemService<ClipboardManager>()?.setPrimaryClip(clip)
+        Toast.makeText(context, R.string.all_copied, Toast.LENGTH_LONG).show()
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/more/MoreFragment.kt

@@ -18,7 +18,9 @@ import io.github.wulkanowy.ui.modules.main.MainView
 import io.github.wulkanowy.ui.modules.message.MessageFragment
 import io.github.wulkanowy.ui.modules.mobiledevice.MobileDeviceFragment
 import io.github.wulkanowy.ui.modules.note.NoteFragment
+import io.github.wulkanowy.ui.modules.schoolandteachers.SchoolAndTeachersFragment
 import io.github.wulkanowy.ui.modules.settings.SettingsFragment
+import io.github.wulkanowy.ui.modules.schoolandteachers.teacher.TeacherFragment
 import io.github.wulkanowy.utils.getCompatDrawable
 import io.github.wulkanowy.utils.setOnItemClickListener
 import kotlinx.android.synthetic.main.fragment_more.*
@@ -54,6 +56,9 @@ class MoreFragment : BaseFragment(), MoreView, MainView.TitledView, MainView.Mai
     override val mobileDevicesRes: Pair<String, Drawable?>?
         get() = context?.run { getString(R.string.mobile_devices_title) to getCompatDrawable(R.drawable.ic_more_mobile_devices) }
 
+    override val schoolAndTeachersRes: Pair<String, Drawable?>?
+        get() = context?.run { getString(R.string.schoolandteachers_title) to getCompatDrawable((R.drawable.ic_more_schoolandteachers)) }
+
     override val settingsRes: Pair<String, Drawable?>?
         get() = context?.run { getString(R.string.settings_title) to getCompatDrawable(R.drawable.ic_more_settings) }
 
@@ -106,6 +111,10 @@ class MoreFragment : BaseFragment(), MoreView, MainView.TitledView, MainView.Mai
         (activity as? MainActivity)?.pushView(MobileDeviceFragment.newInstance())
     }
 
+    override fun openSchoolAndTeachersView() {
+        (activity as? MainActivity)?.pushView(SchoolAndTeachersFragment.newInstance())
+    }
+
     override fun openSettingsView() {
         (activity as? MainActivity)?.pushView(SettingsFragment.newInstance())
     }

app/src/main/java/io/github/wulkanowy/ui/modules/more/MorePresenter.kt

@@ -31,6 +31,7 @@ class MorePresenter @Inject constructor(
                 noteRes?.first -> openNoteView()
                 luckyNumberRes?.first -> openLuckyNumberView()
                 mobileDevicesRes?.first -> openMobileDevicesView()
+                schoolAndTeachersRes?.first -> openSchoolAndTeachersView()
                 settingsRes?.first -> openSettingsView()
                 aboutRes?.first -> openAboutView()
             }
@@ -51,6 +52,7 @@ class MorePresenter @Inject constructor(
                 noteRes?.let { MoreItem(it.first, it.second) },
                 luckyNumberRes?.let { MoreItem(it.first, it.second) },
                 mobileDevicesRes?.let { MoreItem(it.first, it.second) },
+                schoolAndTeachersRes?.let { MoreItem(it.first, it.second) },
                 settingsRes?.let { MoreItem(it.first, it.second) },
                 aboutRes?.let { MoreItem(it.first, it.second) })
             )

app/src/main/java/io/github/wulkanowy/ui/modules/more/MoreView.kt

@@ -15,6 +15,8 @@ interface MoreView : BaseView {
 
     val mobileDevicesRes: Pair<String, Drawable?>?
 
+    val schoolAndTeachersRes: Pair<String, Drawable?>?
+
     val settingsRes: Pair<String, Drawable?>?
 
     val aboutRes: Pair<String, Drawable?>?
@@ -38,4 +40,6 @@ interface MoreView : BaseView {
     fun openLuckyNumberView()
 
     fun openMobileDevicesView()
+
+    fun openSchoolAndTeachersView()
 }

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/SchoolAndTeachersChildView.kt

@@ -0,0 +1,8 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers
+
+interface SchoolAndTeachersChildView {
+
+    fun notifyParentDataLoaded()
+
+    fun onParentLoadData(forceRefresh: Boolean)
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/SchoolAndTeachersFragment.kt

@@ -0,0 +1,87 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.View.INVISIBLE
+import android.view.View.VISIBLE
+import android.view.ViewGroup
+import io.github.wulkanowy.R
+import io.github.wulkanowy.ui.base.BaseFragment
+import io.github.wulkanowy.ui.base.BaseFragmentPagerAdapter
+import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.ui.modules.schoolandteachers.school.SchoolFragment
+import io.github.wulkanowy.ui.modules.schoolandteachers.teacher.TeacherFragment
+import io.github.wulkanowy.utils.dpToPx
+import io.github.wulkanowy.utils.setOnSelectPageListener
+import kotlinx.android.synthetic.main.fragment_schoolandteachers.*
+import javax.inject.Inject
+
+class SchoolAndTeachersFragment : BaseFragment(), SchoolAndTeachersView, MainView.TitledView {
+
+    @Inject
+    lateinit var presenter: SchoolAndTeachersPresenter
+
+    @Inject
+    lateinit var pagerAdapter: BaseFragmentPagerAdapter
+
+    companion object {
+        fun newInstance() = SchoolAndTeachersFragment()
+    }
+
+    override val titleStringId: Int get() = R.string.schoolandteachers_title
+
+    override val currentPageIndex get() = schoolandteachersViewPager.currentItem
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        return inflater.inflate(R.layout.fragment_schoolandteachers, container, false)
+    }
+
+    override fun onActivityCreated(savedInstanceState: Bundle?) {
+        super.onActivityCreated(savedInstanceState)
+        presenter.onAttachView(this)
+    }
+
+    override fun initView() {
+        with(pagerAdapter) {
+            containerId = schoolandteachersViewPager.id
+            addFragmentsWithTitle(mapOf(
+                SchoolFragment.newInstance() to getString(R.string.school_title),
+                TeacherFragment.newInstance() to getString(R.string.teachers_title)
+            ))
+        }
+
+        with(schoolandteachersViewPager) {
+            adapter = pagerAdapter
+            offscreenPageLimit = 2
+            setOnSelectPageListener(presenter::onPageSelected)
+        }
+
+        with(schoolandteachersTabLayout) {
+            setupWithViewPager(schoolandteachersViewPager)
+            setElevationCompat(context.dpToPx(4f))
+        }
+    }
+
+    override fun showContent(show: Boolean) {
+        schoolandteachersViewPager.visibility = if (show) VISIBLE else INVISIBLE
+        schoolandteachersTabLayout.visibility = if (show) VISIBLE else INVISIBLE
+    }
+
+    override fun showProgress(show: Boolean) {
+        schoolandteachersProgress.visibility = if (show) VISIBLE else INVISIBLE
+    }
+
+    fun onChildFragmentLoaded() {
+        presenter.onChildViewLoaded()
+    }
+
+    override fun notifyChildLoadData(index: Int, forceRefresh: Boolean) {
+        (pagerAdapter.getFragmentInstance(index) as? SchoolAndTeachersChildView)?.onParentLoadData(forceRefresh)
+    }
+
+    override fun onDestroyView() {
+        presenter.onDetachView()
+        super.onDestroyView()
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/SchoolAndTeachersModule.kt

@@ -0,0 +1,31 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers
+
+import dagger.Module
+import dagger.Provides
+import dagger.android.ContributesAndroidInjector
+import io.github.wulkanowy.di.scopes.PerChildFragment
+import io.github.wulkanowy.di.scopes.PerFragment
+import io.github.wulkanowy.ui.base.BaseFragmentPagerAdapter
+import io.github.wulkanowy.ui.modules.schoolandteachers.school.SchoolFragment
+import io.github.wulkanowy.ui.modules.schoolandteachers.teacher.TeacherFragment
+
+@Suppress("unused")
+@Module(includes = [SchoolAndTeachersModule.Static::class])
+abstract class SchoolAndTeachersModule {
+
+    @Module
+    object Static {
+
+        @PerFragment
+        @Provides
+        fun provideSchoolAndTeachersAdapter(fragment: SchoolAndTeachersFragment) = BaseFragmentPagerAdapter(fragment.childFragmentManager)
+    }
+
+    @PerChildFragment
+    @ContributesAndroidInjector
+    abstract fun provideSchoolFragment(): SchoolFragment
+
+    @PerChildFragment
+    @ContributesAndroidInjector
+    abstract fun provideTeacherFragment(): TeacherFragment
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/SchoolAndTeachersPresenter.kt

@@ -0,0 +1,47 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers
+
+import io.github.wulkanowy.data.repositories.student.StudentRepository
+import io.github.wulkanowy.ui.base.BasePresenter
+import io.github.wulkanowy.ui.base.ErrorHandler
+import io.github.wulkanowy.utils.SchedulersProvider
+import io.reactivex.Completable
+import timber.log.Timber
+import java.util.concurrent.TimeUnit
+import javax.inject.Inject
+
+class SchoolAndTeachersPresenter @Inject constructor(
+    schedulers: SchedulersProvider,
+    errorHandler: ErrorHandler,
+    studentRepository: StudentRepository
+) : BasePresenter<SchoolAndTeachersView>(errorHandler, studentRepository, schedulers) {
+
+    override fun onAttachView(view: SchoolAndTeachersView) {
+        super.onAttachView(view)
+        disposable.add(Completable.timer(150, TimeUnit.MILLISECONDS, schedulers.mainThread)
+            .subscribe {
+                view.initView()
+                Timber.i("Message view was initialized")
+                loadData()
+            })
+    }
+
+    fun onPageSelected(index: Int) {
+        loadChild(index)
+    }
+
+    private fun loadData() {
+        view?.run { loadChild(currentPageIndex) }
+    }
+
+    private fun loadChild(index: Int, forceRefresh: Boolean = false) {
+        Timber.i("Load schoolandteachers child view index: $index")
+        view?.notifyChildLoadData(index, forceRefresh)
+    }
+
+    fun onChildViewLoaded() {
+        view?.apply {
+            showContent(true)
+            showProgress(false)
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/SchoolAndTeachersView.kt

@@ -0,0 +1,16 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers
+
+import io.github.wulkanowy.ui.base.BaseView
+
+interface SchoolAndTeachersView : BaseView {
+
+    val currentPageIndex: Int
+
+    fun initView()
+
+    fun showContent(show: Boolean)
+
+    fun showProgress(show: Boolean)
+
+    fun notifyChildLoadData(index: Int, forceRefresh: Boolean)
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/school/SchoolFragment.kt

@@ -0,0 +1,95 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers.school
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import io.github.wulkanowy.R
+import io.github.wulkanowy.data.db.entities.School
+import io.github.wulkanowy.ui.base.BaseFragment
+import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.ui.modules.schoolandteachers.SchoolAndTeachersChildView
+import io.github.wulkanowy.ui.modules.schoolandteachers.SchoolAndTeachersFragment
+import io.github.wulkanowy.utils.dialPhone
+import io.github.wulkanowy.utils.openMapLocation
+import kotlinx.android.synthetic.main.fragment_school.*
+import javax.inject.Inject
+
+class SchoolFragment : BaseFragment(), SchoolView, MainView.TitledView, SchoolAndTeachersChildView {
+
+    @Inject
+    lateinit var presenter: SchoolPresenter
+
+    override val titleStringId get() = R.string.school_title
+
+    companion object {
+        fun newInstance() = SchoolFragment()
+    }
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        return inflater.inflate(R.layout.fragment_school, container, false)
+    }
+
+    override fun onActivityCreated(savedInstanceState: Bundle?) {
+        super.onActivityCreated(savedInstanceState)
+        presenter.onAttachView(this)
+    }
+
+    override fun initView() {
+        schoolSwipe.setOnRefreshListener { presenter.onSwipeRefresh() }
+
+        schoolAddressButton.setOnClickListener { presenter.onAddressSelected() }
+        schoolTelephoneButton.setOnClickListener { presenter.onTelephoneSelected() }
+    }
+
+    override fun updateData(data: School) {
+        schoolName.text = data.name
+        schoolAddress.text = data.address.ifBlank { "-" }
+        schoolAddressButton.visibility = if (data.address.isNotBlank()) View.VISIBLE else View.GONE
+        schoolTelephone.text = data.contact.ifBlank { "-" }
+        schoolTelephoneButton.visibility = if (data.contact.isNotBlank()) View.VISIBLE else View.GONE
+        schoolHeadmaster.text = data.headmaster
+        schoolPedagogue.text = data.pedagogue
+    }
+
+    override fun showEmpty(show: Boolean) {
+        schoolEmpty.visibility = if (show) View.VISIBLE else View.GONE
+    }
+
+    override fun showProgress(show: Boolean) {
+        schoolProgress.visibility = if (show) View.VISIBLE else View.GONE
+    }
+
+    override fun enableSwipe(enable: Boolean) {
+        schoolSwipe.isEnabled = enable
+    }
+
+    override fun showContent(show: Boolean) {
+        schoolContent.visibility = if (show) View.VISIBLE else View.GONE
+    }
+
+    override fun hideRefresh() {
+        schoolSwipe.isRefreshing = false
+    }
+
+    override fun notifyParentDataLoaded() {
+        (parentFragment as? SchoolAndTeachersFragment)?.onChildFragmentLoaded()
+    }
+
+    override fun onParentLoadData(forceRefresh: Boolean) {
+        presenter.onParentViewLoadData(forceRefresh)
+    }
+
+    override fun onDestroyView() {
+        presenter.onDetachView()
+        super.onDestroyView()
+    }
+
+    override fun openMapsLocation(location: String) {
+        context?.openMapLocation(location)
+    }
+
+    override fun dialPhone(phone: String) {
+        context?.dialPhone(phone)
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/school/SchoolPresenter.kt

@@ -0,0 +1,84 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers.school
+
+import io.github.wulkanowy.data.repositories.school.SchoolRepository
+import io.github.wulkanowy.data.repositories.semester.SemesterRepository
+import io.github.wulkanowy.data.repositories.student.StudentRepository
+import io.github.wulkanowy.ui.base.BasePresenter
+import io.github.wulkanowy.ui.base.ErrorHandler
+import io.github.wulkanowy.utils.FirebaseAnalyticsHelper
+import io.github.wulkanowy.utils.SchedulersProvider
+import timber.log.Timber
+import javax.inject.Inject
+
+class SchoolPresenter @Inject constructor(
+    schedulers: SchedulersProvider,
+    errorHandler: ErrorHandler,
+    studentRepository: StudentRepository,
+    private val semesterRepository: SemesterRepository,
+    private val schoolRepository: SchoolRepository,
+    private val analytics: FirebaseAnalyticsHelper
+) : BasePresenter<SchoolView>(errorHandler, studentRepository, schedulers) {
+
+    private var address: String? = null
+
+    private var contact: String? = null
+
+    override fun onAttachView(view: SchoolView) {
+        super.onAttachView(view)
+        view.initView()
+        Timber.i("School view was initialized")
+        loadData()
+    }
+
+    fun onSwipeRefresh() {
+        loadData(true)
+    }
+
+    fun onParentViewLoadData(forceRefresh: Boolean) {
+        loadData(forceRefresh)
+    }
+
+    fun onAddressSelected() {
+        address?.let{ view?.openMapsLocation(it) }
+    }
+
+    fun onTelephoneSelected() {
+        contact?.let { view?.dialPhone(it) }
+    }
+
+    private fun loadData(forceRefresh: Boolean = false) {
+        Timber.i("Loading school info started")
+        disposable.add(studentRepository.getCurrentStudent()
+            .flatMap { semesterRepository.getCurrentSemester(it) }
+            .flatMapMaybe { schoolRepository.getSchoolInfo(it, forceRefresh) }
+            .subscribeOn(schedulers.backgroundThread)
+            .observeOn(schedulers.mainThread)
+            .doFinally {
+                view?.run {
+                    hideRefresh()
+                    showProgress(false)
+                    enableSwipe(true)
+                    notifyParentDataLoaded()
+                }
+            }.subscribe({
+                Timber.i("Loading teachers result: Success")
+                view?.run {
+                    address = it.address.ifBlank { null }
+                    contact = it.contact.ifBlank { null }
+                    updateData(it)
+                    showContent(true)
+                    showEmpty(false)
+                }
+                analytics.logEvent("load_school", "force_refresh" to forceRefresh)
+            }, {
+                Timber.i("Loading school result: An exception occurred")
+                errorHandler.dispatch(it)
+            }, {
+                Timber.i("Loading school result: No school info found")
+                view?.run {
+                    showContent(false)
+                    showEmpty(true)
+                }
+            }))
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/school/SchoolView.kt

@@ -0,0 +1,26 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers.school
+
+import io.github.wulkanowy.data.db.entities.School
+import io.github.wulkanowy.ui.base.BaseView
+import io.github.wulkanowy.ui.modules.schoolandteachers.SchoolAndTeachersChildView
+
+interface SchoolView : BaseView, SchoolAndTeachersChildView {
+
+    fun initView()
+
+    fun updateData(data: School)
+
+    fun showEmpty(show: Boolean)
+
+    fun showProgress(show: Boolean)
+
+    fun enableSwipe(enable: Boolean)
+
+    fun showContent(show: Boolean)
+
+    fun hideRefresh()
+
+    fun openMapsLocation(location: String)
+
+    fun dialPhone(phone: String)
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/teacher/TeacherFragment.kt

@@ -0,0 +1,104 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers.teacher
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import eu.davidea.flexibleadapter.FlexibleAdapter
+import eu.davidea.flexibleadapter.common.FlexibleItemDecoration
+import eu.davidea.flexibleadapter.common.SmoothScrollLinearLayoutManager
+import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
+import io.github.wulkanowy.R
+import io.github.wulkanowy.ui.base.BaseFragment
+import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.ui.modules.schoolandteachers.SchoolAndTeachersChildView
+import io.github.wulkanowy.ui.modules.schoolandteachers.SchoolAndTeachersFragment
+import kotlinx.android.synthetic.main.fragment_teacher.*
+import javax.inject.Inject
+
+class TeacherFragment : BaseFragment(), TeacherView, MainView.TitledView, SchoolAndTeachersChildView {
+
+    @Inject
+    lateinit var presenter: TeacherPresenter
+
+    @Inject
+    lateinit var teacherAdapter: FlexibleAdapter<AbstractFlexibleItem<*>>
+
+    companion object {
+        fun newInstance() = TeacherFragment()
+    }
+
+    override val titleStringId: Int
+        get() = R.string.teachers_title
+
+    override val noSubjectString get() = getString(R.string.teacher_no_subject)
+
+    override val isViewEmpty: Boolean
+        get() = teacherAdapter.isEmpty
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        return inflater.inflate(R.layout.fragment_teacher, container, false)
+    }
+
+    override fun onActivityCreated(savedInstanceState: Bundle?) {
+        super.onActivityCreated(savedInstanceState)
+        presenter.onAttachView(this)
+    }
+
+    override fun initView() {
+        teacherRecycler.run {
+            layoutManager = SmoothScrollLinearLayoutManager(context)
+            adapter = teacherAdapter
+            addItemDecoration(FlexibleItemDecoration(context)
+                .withDefaultDivider()
+                .withDrawDividerOnLastItem(false)
+            )
+        }
+        teacherSwipe.setOnRefreshListener { presenter.onSwipeRefresh() }
+    }
+
+    override fun updateData(data: List<TeacherItem>) {
+        teacherAdapter.updateDataSet(data, true)
+    }
+
+    override fun updateItem(item: AbstractFlexibleItem<*>) {
+        teacherAdapter.updateItem(item)
+    }
+
+    override fun clearData() {
+        teacherAdapter.clear()
+    }
+
+    override fun showEmpty(show: Boolean) {
+        teacherEmpty.visibility = if (show) View.VISIBLE else View.GONE
+    }
+
+    override fun showProgress(show: Boolean) {
+        teacherProgress.visibility = if (show) View.VISIBLE else View.GONE
+    }
+
+    override fun enableSwipe(enable: Boolean) {
+        teacherSwipe.isEnabled = enable
+    }
+
+    override fun showContent(show: Boolean) {
+        teacherRecycler.visibility = if (show) View.VISIBLE else View.GONE
+    }
+
+    override fun hideRefresh() {
+        teacherSwipe.isRefreshing = false
+    }
+
+    override fun notifyParentDataLoaded() {
+        (parentFragment as? SchoolAndTeachersFragment)?.onChildFragmentLoaded()
+    }
+
+    override fun onParentLoadData(forceRefresh: Boolean) {
+        presenter.onParentViewLoadData(forceRefresh)
+    }
+
+    override fun onDestroyView() {
+        presenter.onDetachView()
+        super.onDestroyView()
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/teacher/TeacherItem.kt

@@ -0,0 +1,59 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers.teacher
+
+import android.annotation.SuppressLint
+import android.view.View
+import android.view.View.GONE
+import android.view.View.VISIBLE
+import eu.davidea.flexibleadapter.FlexibleAdapter
+import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
+import eu.davidea.flexibleadapter.items.IFlexible
+import eu.davidea.viewholders.FlexibleViewHolder
+import io.github.wulkanowy.R
+import io.github.wulkanowy.data.db.entities.Teacher
+import kotlinx.android.extensions.LayoutContainer
+import kotlinx.android.synthetic.main.item_teacher.*
+
+class TeacherItem(val teacher: Teacher, private val noSubjectText: String) : AbstractFlexibleItem<TeacherItem.ViewHolder>() {
+
+    override fun getLayoutRes() = R.layout.item_teacher
+
+    override fun createViewHolder(view: View, adapter: FlexibleAdapter<IFlexible<*>>): TeacherItem.ViewHolder {
+        return TeacherItem.ViewHolder(view, adapter)
+    }
+
+    @SuppressLint("SetTextI18n")
+    override fun bindViewHolder(adapter: FlexibleAdapter<IFlexible<*>>, holder: TeacherItem.ViewHolder, position: Int, payloads: MutableList<Any>?) {
+        holder.apply {
+            teacherItemName.text = teacher.name
+            teacherItemSubject.text = if (teacher.subject.isNotBlank()) teacher.subject else noSubjectText
+            if (teacher.shortName.isNotBlank()) {
+                teacherItemShortName.visibility = VISIBLE
+                teacherItemShortName.text = "[${teacher.shortName}]"
+            } else {
+                teacherItemShortName.visibility = GONE
+            }
+        }
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as TeacherItem
+
+        if (teacher != other.teacher) return false
+        if (teacher.id != other.teacher.id) return false
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = teacher.hashCode()
+        result = 31 * result + teacher.id.toInt()
+        return result
+    }
+
+    class ViewHolder(val view: View, adapter: FlexibleAdapter<*>) : FlexibleViewHolder(view, adapter), LayoutContainer {
+        override val containerView: View
+            get() = contentView
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/teacher/TeacherPresenter.kt

@@ -0,0 +1,66 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers.teacher
+
+import io.github.wulkanowy.data.repositories.semester.SemesterRepository
+import io.github.wulkanowy.data.repositories.student.StudentRepository
+import io.github.wulkanowy.data.repositories.teacher.TeacherRepository
+import io.github.wulkanowy.ui.base.BasePresenter
+import io.github.wulkanowy.ui.base.ErrorHandler
+import io.github.wulkanowy.utils.FirebaseAnalyticsHelper
+import io.github.wulkanowy.utils.SchedulersProvider
+import timber.log.Timber
+import javax.inject.Inject
+
+class TeacherPresenter @Inject constructor(
+    schedulers: SchedulersProvider,
+    errorHandler: ErrorHandler,
+    studentRepository: StudentRepository,
+    private val semesterRepository: SemesterRepository,
+    private val teacherRepository: TeacherRepository,
+    private val analytics: FirebaseAnalyticsHelper
+) : BasePresenter<TeacherView>(errorHandler, studentRepository, schedulers) {
+
+    override fun onAttachView(view: TeacherView) {
+        super.onAttachView(view)
+        view.initView()
+        Timber.i("Teacher view was initialized")
+        loadData()
+    }
+
+    fun onSwipeRefresh() {
+        loadData(true)
+    }
+
+    fun onParentViewLoadData(forceRefresh: Boolean) {
+        loadData(forceRefresh)
+    }
+
+    private fun loadData(forceRefresh: Boolean = false) {
+        Timber.i("Loading teachers data started")
+        disposable.add(studentRepository.getCurrentStudent()
+            .flatMap { semesterRepository.getCurrentSemester(it) }
+            .flatMap { teacherRepository.getTeachers(it, forceRefresh) }
+            .map { it.filter { teacher -> teacher.name.isNotBlank() } }
+            .map { items -> items.map { TeacherItem(it, view?.noSubjectString.orEmpty()) } }
+            .subscribeOn(schedulers.backgroundThread)
+            .observeOn(schedulers.mainThread)
+            .doFinally {
+                view?.run {
+                    hideRefresh()
+                    showProgress(false)
+                    enableSwipe(true)
+                    notifyParentDataLoaded()
+                }
+            }.subscribe({
+                Timber.i("Loading teachers result: Success")
+                view?.run {
+                    updateData(it)
+                    showContent(it.isNotEmpty())
+                    showEmpty(it.isEmpty())
+                }
+                analytics.logEvent("load_teachers", "items" to it.size, "force_refresh" to forceRefresh)
+            }) {
+                Timber.i("Loading teachers result: An exception occurred")
+                errorHandler.dispatch(it)
+            })
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/schoolandteachers/teacher/TeacherView.kt

@@ -0,0 +1,30 @@
+package io.github.wulkanowy.ui.modules.schoolandteachers.teacher
+
+import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
+import io.github.wulkanowy.ui.base.BaseView
+import io.github.wulkanowy.ui.modules.schoolandteachers.SchoolAndTeachersChildView
+
+interface TeacherView : BaseView, SchoolAndTeachersChildView {
+
+    val isViewEmpty: Boolean
+
+    val noSubjectString: String
+
+    fun initView()
+
+    fun updateData(data: List<TeacherItem>)
+
+    fun updateItem(item: AbstractFlexibleItem<*>)
+
+    fun hideRefresh()
+
+    fun clearData()
+
+    fun showProgress(show: Boolean)
+
+    fun enableSwipe(enable: Boolean)
+
+    fun showContent(show: Boolean)
+
+    fun showEmpty(show: Boolean)
+}

app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableDialog.kt

@@ -11,6 +11,7 @@ import android.view.ViewGroup
 import androidx.fragment.app.DialogFragment
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Timetable
+import io.github.wulkanowy.utils.getThemeAttrColor
 import io.github.wulkanowy.utils.toFormattedString
 import kotlinx.android.synthetic.main.dialog_timetable.*
 import org.threeten.bp.LocalDateTime
@@ -72,13 +73,22 @@ class TimetableDialog : DialogFragment() {
 
     private fun setInfo(info: String, teacher: String, canceled: Boolean, changes: Boolean) {
         when {
-            info.isNotBlank() -> timetableDialogChanges.text = when {
+            info.isNotBlank() -> {
-                canceled && !changes -> "Lekcja odwołana: $info"
+                if (canceled) {
-                changes && teacher.isNotBlank() -> "Zastępstwo: $teacher"
+                    timetableDialogChangesTitle.setTextColor(requireContext().getThemeAttrColor(R.attr.colorPrimary))
-                changes && teacher.isBlank() -> "Zastępstwo, ${info.decapitalize()}"
+                    timetableDialogChanges.setTextColor(requireContext().getThemeAttrColor(R.attr.colorPrimary))
-                else -> info.capitalize()
+                } else {
-            }
+                    timetableDialogChangesTitle.setTextColor(requireContext().getThemeAttrColor(R.attr.colorTimetableChange))
-            else -> {
+                    timetableDialogChanges.setTextColor(requireContext().getThemeAttrColor(R.attr.colorTimetableChange))
+                }
+
+                timetableDialogChanges.text = when {
+                    canceled && !changes -> "Lekcja odwołana: $info"
+                    changes && teacher.isNotBlank() -> "Zastępstwo: $teacher"
+                    changes && teacher.isBlank() -> "Zastępstwo, ${info.decapitalize()}"
+                    else -> info.capitalize()
+                }
+            } else -> {
                 timetableDialogChangesTitle.visibility = GONE
                 timetableDialogChanges.visibility = GONE
             }

app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableFragment.kt

@@ -39,8 +39,6 @@ class TimetableFragment : BaseFragment(), TimetableView, MainView.MainChildView,
 
     override val titleStringId get() = R.string.timetable_title
 
-    override val roomString get() = getString(R.string.timetable_room)
-
     override val isViewEmpty get() = timetableAdapter.isEmpty
 
     override val currentStackSize get() = (activity as? MainActivity)?.currentStackSize

app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableItem.kt

@@ -11,11 +11,12 @@ import eu.davidea.flexibleadapter.items.IFlexible
 import eu.davidea.viewholders.FlexibleViewHolder
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Timetable
+import io.github.wulkanowy.utils.getThemeAttrColor
 import io.github.wulkanowy.utils.toFormattedString
 import kotlinx.android.extensions.LayoutContainer
 import kotlinx.android.synthetic.main.item_timetable.*
 
-class TimetableItem(val lesson: Timetable, private val roomText: String) :
+class TimetableItem(val lesson: Timetable) :
     AbstractFlexibleItem<TimetableItem.ViewHolder>() {
 
     override fun getLayoutRes() = R.layout.item_timetable
@@ -26,16 +27,97 @@ class TimetableItem(val lesson: Timetable, private val roomText: String) :
 
     @SuppressLint("SetTextI18n")
     override fun bindViewHolder(adapter: FlexibleAdapter<IFlexible<*>>, holder: ViewHolder, position: Int, payloads: MutableList<Any>?) {
-        holder.apply {
+        updateFields(holder)
-            timetableItemNumber.text = lesson.number.toString()
+
-            timetableItemSubject.text = lesson.subject
+        with(holder) {
-            timetableItemRoom.text = if (lesson.room.isNotBlank()) "$roomText ${lesson.room}" else ""
-            timetableItemTime.text = "${lesson.start.toFormattedString("HH:mm")} - ${lesson.end.toFormattedString("HH:mm")}"
-            timetableItemAlert.visibility = if (lesson.changes || lesson.canceled) VISIBLE else GONE
             timetableItemSubject.paintFlags =
                 if (lesson.canceled) timetableItemSubject.paintFlags or Paint.STRIKE_THRU_TEXT_FLAG
                 else timetableItemSubject.paintFlags and Paint.STRIKE_THRU_TEXT_FLAG.inv()
         }
+
+        updateDescription(holder)
+        updateColors(holder)
+    }
+
+    private fun updateFields(holder: ViewHolder) {
+        with(holder) {
+            timetableItemNumber.text = lesson.number.toString()
+            timetableItemSubject.text = lesson.subject
+            timetableItemRoom.text = lesson.room
+            timetableItemTeacher.text = lesson.teacher
+            timetableItemTimeStart.text = lesson.start.toFormattedString("HH:mm")
+            timetableItemTimeFinish.text = lesson.end.toFormattedString("HH:mm")
+        }
+    }
+
+    private fun updateDescription(holder: ViewHolder) {
+        with(holder) {
+            if (lesson.info.isNotBlank() && !lesson.changes) {
+                updateDescriptionNoChanges(this)
+            } else {
+                timetableItemDescription.visibility = GONE
+
+                timetableItemRoom.visibility = VISIBLE
+                timetableItemTeacher.visibility = VISIBLE
+            }
+        }
+    }
+
+    private fun updateDescriptionNoChanges(holder: ViewHolder) {
+        with(holder) {
+            timetableItemDescription.visibility = VISIBLE
+            timetableItemDescription.text = lesson.info
+
+            timetableItemRoom.visibility = GONE
+            timetableItemTeacher.visibility = GONE
+
+            timetableItemDescription.setTextColor(holder.view.context.getThemeAttrColor(
+                if (lesson.canceled) R.attr.colorPrimary
+                else R.attr.colorTimetableChange
+            ))
+        }
+    }
+
+    private fun updateColors(holder: ViewHolder) {
+        with(holder) {
+            if (lesson.canceled) {
+                timetableItemNumber.setTextColor(holder.view.context.getThemeAttrColor(R.attr.colorPrimary))
+                timetableItemSubject.setTextColor(holder.view.context.getThemeAttrColor(R.attr.colorPrimary))
+            } else {
+                updateNumberColor(this)
+                updateSubjectColor(this)
+                updateRoomColor(this)
+                updateTeacherColor(this)
+            }
+        }
+    }
+
+    private fun updateNumberColor(holder: ViewHolder) {
+        holder.timetableItemNumber.setTextColor(holder.view.context.getThemeAttrColor(
+            if (lesson.changes || lesson.info.isNotBlank()) R.attr.colorTimetableChange
+            else android.R.attr.textColorPrimary
+        ))
+    }
+
+    private fun updateSubjectColor(holder: ViewHolder) {
+        holder.timetableItemSubject.setTextColor(holder.view.context.getThemeAttrColor(
+            if (lesson.subjectOld.isNotBlank() && lesson.subjectOld != lesson.subject) R.attr.colorTimetableChange
+            else android.R.attr.textColorPrimary
+        ))
+    }
+
+    private fun updateRoomColor(holder: ViewHolder) {
+        holder.timetableItemRoom.setTextColor(holder.view.context.getThemeAttrColor(
+            if (lesson.roomOld.isNotBlank() && lesson.roomOld != lesson.room) R.attr.colorTimetableChange
+            else android.R.attr.textColorSecondary
+        ))
+    }
+
+    private fun updateTeacherColor(holder: ViewHolder) {
+        holder.timetableItemTeacher.setTextColor(holder.view.context.getThemeAttrColor(
+            if (lesson.teacherOld.isNotBlank() && lesson.teacherOld != lesson.teacher) R.attr.colorTimetableChange
+            else android.R.attr.textColorSecondary
+        ))
     }
 
     override fun equals(other: Any?): Boolean {

app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetablePresenter.kt

@@ -1,5 +1,6 @@
 package io.github.wulkanowy.ui.modules.timetable
 
+import android.annotation.SuppressLint
 import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
 import io.github.wulkanowy.data.repositories.semester.SemesterRepository
 import io.github.wulkanowy.data.repositories.student.StudentRepository
@@ -108,7 +109,7 @@ class TimetablePresenter @Inject constructor(
                 .flatMap { semesterRepository.getCurrentSemester(it) }
                 .delay(200, MILLISECONDS)
                 .flatMap { timetableRepository.getTimetable(it, currentDate, currentDate, forceRefresh) }
-                .map { items -> items.map { TimetableItem(it, view?.roomString.orEmpty()) } }
+                .map { items -> items.map { TimetableItem(it) } }
                 .map { items -> items.sortedBy { it.lesson.number } }
                 .subscribeOn(schedulers.backgroundThread)
                 .observeOn(schedulers.mainThread)
@@ -147,11 +148,12 @@ class TimetablePresenter @Inject constructor(
         }
     }
 
+    @SuppressLint("DefaultLocale")
     private fun reloadNavigation() {
         view?.apply {
             showPreButton(!currentDate.minusDays(1).isHolidays)
             showNextButton(!currentDate.plusDays(1).isHolidays)
-            updateNavigationDay(currentDate.toFormattedString("EEEE\ndd.MM.YYYY").capitalize())
+            updateNavigationDay(currentDate.toFormattedString("EEEE, dd.MM").capitalize())
         }
     }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableView.kt

@@ -5,8 +5,6 @@ import io.github.wulkanowy.ui.base.BaseView
 
 interface TimetableView : BaseView {
 
-    val roomString: String
-
     val isViewEmpty: Boolean
 
     val currentStackSize: Int?

app/src/main/java/io/github/wulkanowy/ui/modules/timetable/completed/CompletedLessonItem.kt

@@ -9,6 +9,7 @@ import eu.davidea.flexibleadapter.items.IFlexible
 import eu.davidea.viewholders.FlexibleViewHolder
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.CompletedLesson
+import io.github.wulkanowy.utils.getThemeAttrColor
 import kotlinx.android.extensions.LayoutContainer
 import kotlinx.android.synthetic.main.item_completed_lesson.*
 
@@ -23,6 +24,10 @@ class CompletedLessonItem(val completedLesson: CompletedLesson) : AbstractFlexib
     override fun bindViewHolder(adapter: FlexibleAdapter<IFlexible<*>>?, holder: CompletedLessonItem.ViewHolder?, position: Int, payloads: MutableList<Any>?) {
         holder?.apply {
             completedLessonItemNumber.text = completedLesson.number.toString()
+            completedLessonItemNumber.setTextColor(holder.contentView.context.getThemeAttrColor(
+                if (completedLesson.substitution.isNotEmpty()) R.attr.colorTimetableChange
+                else android.R.attr.textColorPrimary
+            ))
             completedLessonItemSubject.text = completedLesson.subject
             completedLessonItemTopic.text = completedLesson.topic
             completedLessonItemAlert.visibility = if (completedLesson.substitution.isNotEmpty()) VISIBLE else GONE

app/src/main/java/io/github/wulkanowy/ui/modules/timetable/completed/CompletedLessonsPresenter.kt

@@ -135,7 +135,7 @@ class CompletedLessonsPresenter @Inject constructor(
         view?.apply {
             showPreButton(!currentDate.minusDays(1).isHolidays)
             showNextButton(!currentDate.plusDays(1).isHolidays)
-            updateNavigationDay(currentDate.toFormattedString("EEEE\ndd.MM.YYYY").capitalize())
+            updateNavigationDay(currentDate.toFormattedString("EEEE, dd.MM").capitalize())
         }
     }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetConfigureActivity.kt

@@ -7,6 +7,7 @@ import android.content.Intent
 import android.os.Bundle
 import android.widget.Toast
 import android.widget.Toast.LENGTH_LONG
+import androidx.appcompat.app.AlertDialog
 import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.davidea.flexibleadapter.common.SmoothScrollLinearLayoutManager
 import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
@@ -27,6 +28,8 @@ class TimetableWidgetConfigureActivity : BaseActivity<TimetableWidgetConfigurePr
     @Inject
     override lateinit var presenter: TimetableWidgetConfigurePresenter
 
+    private var dialog: AlertDialog? = null
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setResult(RESULT_CANCELED)
@@ -38,11 +41,27 @@ class TimetableWidgetConfigureActivity : BaseActivity<TimetableWidgetConfigurePr
     }
 
     override fun initView() {
-        widgetConfigureRecycler.apply {
+        with(widgetConfigureRecycler) {
             adapter = configureAdapter
             layoutManager = SmoothScrollLinearLayoutManager(context)
         }
-        configureAdapter.setOnItemClickListener { presenter.onItemSelect(it) }
+
+        configureAdapter.setOnItemClickListener(presenter::onItemSelect)
+    }
+
+    override fun showThemeDialog() {
+        val items = arrayOf(
+            getString(R.string.widget_timetable_theme_light),
+            getString(R.string.widget_timetable_theme_dark)
+        )
+
+        dialog = AlertDialog.Builder(this, R.style.WulkanowyTheme_WidgetAccountSwitcher)
+            .setTitle(R.string.widget_timetable_theme_title)
+            .setOnDismissListener { presenter.onDismissThemeView() }
+            .setSingleChoiceItems(items, -1) { _, which ->
+                presenter.onThemeSelect(which)
+            }
+            .show()
     }
 
     override fun updateData(data: List<TimetableWidgetConfigureItem>) {
@@ -72,4 +91,9 @@ class TimetableWidgetConfigureActivity : BaseActivity<TimetableWidgetConfigurePr
     override fun openLoginView() {
         startActivity(LoginActivity.getStartIntent(this))
     }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        dialog?.dismiss()
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetConfigureItem.kt

@@ -2,12 +2,14 @@ package io.github.wulkanowy.ui.modules.timetablewidget
 
 import android.annotation.SuppressLint
 import android.view.View
+import androidx.core.graphics.ColorUtils
 import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
 import eu.davidea.flexibleadapter.items.IFlexible
 import eu.davidea.viewholders.FlexibleViewHolder
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.utils.getThemeAttrColor
 import kotlinx.android.extensions.LayoutContainer
 import kotlinx.android.synthetic.main.item_account.*
 
@@ -16,16 +18,19 @@ class TimetableWidgetConfigureItem(val student: Student, private val isCurrent:
 
     override fun getLayoutRes() = R.layout.item_account
 
-    override fun createViewHolder(view: View, adapter: FlexibleAdapter<IFlexible<*>>): ViewHolder {
+    override fun createViewHolder(view: View, adapter: FlexibleAdapter<IFlexible<*>>) = ViewHolder(view, adapter)
-        return ViewHolder(view, adapter)
-    }
 
     @SuppressLint("SetTextI18n")
     override fun bindViewHolder(adapter: FlexibleAdapter<IFlexible<*>>, holder: ViewHolder, position: Int, payloads: MutableList<Any>) {
-        holder.apply {
+        val context = holder.contentView.context
+
+        val colorImage = if (isCurrent) context.getThemeAttrColor(R.attr.colorPrimary)
+        else ColorUtils.setAlphaComponent(context.getThemeAttrColor(R.attr.colorOnSurface), 153)
+
+        with(holder) {
             accountItemName.text = "${student.studentName} ${student.className}"
             accountItemSchool.text = student.schoolName
-            accountItemImage.setBackgroundResource(if (isCurrent) R.drawable.ic_account_circular_border else 0)
+            accountItemImage.setColorFilter(colorImage)
         }
     }
 
@@ -46,8 +51,9 @@ class TimetableWidgetConfigureItem(val student: Student, private val isCurrent:
         return result
     }
 
-    class ViewHolder(view: View, adapter: FlexibleAdapter<*>) : FlexibleViewHolder(view, adapter), LayoutContainer {
+    class ViewHolder(view: View, adapter: FlexibleAdapter<*>) : FlexibleViewHolder(view, adapter),
-        override val containerView: View
+        LayoutContainer {
-            get() = contentView
+
+        override val containerView: View? get() = contentView
     }
 }