[4.0-rc.4] Update build.gradle, signing and changelog.

annotation/.gitignore

@@ -0,0 +1 @@
+/build

annotation/build.gradle

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-28. 
+ */
+
+apply plugin: 'java-library'
+apply plugin: 'kotlin'
+apply plugin: 'kotlin-kapt'
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+
+sourceCompatibility = "7"
+targetCompatibility = "7"
+
+repositories {
+    mavenCentral()
+}
+compileKotlin {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
+compileTestKotlin {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}

annotation/src/main/java/pl/szczodrzynski/edziennik/annotation/SelectiveDao.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-28.
+ */
+
+package pl.szczodrzynski.edziennik.annotation
+
+import kotlin.reflect.KClass
+
+@Target(AnnotationTarget.CLASS)
+@Retention(AnnotationRetention.SOURCE)
+@MustBeDocumented
+annotation class SelectiveDao(
+        val db: KClass<*>
+)

annotation/src/main/java/pl/szczodrzynski/edziennik/annotation/UpdateSelective.kt

@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-28. 
+ */
+
+package pl.szczodrzynski.edziennik.annotation
+
+@Target(AnnotationTarget.FUNCTION)
+@Retention(AnnotationRetention.SOURCE)
+@MustBeDocumented
+annotation class UpdateSelective(
+        val primaryKeys: Array<String>,
+        val skippedColumns: Array<String> = []
+)

app/build.gradle

@@ -193,6 +193,9 @@ dependencies {
     implementation "io.coil-kt:coil:0.9.2"
 
     implementation 'com.github.kuba2k2:NumberSlidingPicker:2921225f76'
+
+    implementation project(":annotation")
+    kapt project(":codegen")
 }
 repositories {
     mavenCentral()

app/src/main/assets/pl-changelog.html

@@ -1,4 +1,10 @@
-<h3>Wersja 4.0-rc.3, 2020-03-29</h3>
+<h3>Wersja 4.0-rc.4, 2020-03-30</h3>
+<ul>
+    <li>Poprawione pobieranie załączników w Librusie.</li>
+    <li>Nowy widok zadań domowych</li>
+    <li>Możliwość oznaczania zadań domowych i wydarzeń jako wykonane.</li>
+</ul>
+<!--<h3>Wersja 4.0-rc.3, 2020-03-29</h3>
 <ul>
     <li><b><u>Wysyłanie wiadomości</u></b> - funkcja, na którą czekał każdy. Od teraz w Szkolnym można wysyłać oraz odpowiadać na wiadomości do nauczycieli &#x1F44F;</li>
     <li><b>Przebudowaliśmy cały moduł synchronizacji</b>, co oznacza większą stabilność aplikacji, szybkość oraz poprawność pobieranych danych</li>
@@ -22,7 +28,7 @@
     <li>Poprawiliśmy synchronizację w tle na niektórych telefonach</li>
     <li>Usunąłem denerwujący brak zaznaczenia w lewym menu</li>
     <li>Znaczna ilość błędów z poprzednich wersji już nie występuje</li>
-</ul>
+</ul>-->
 <br>
 <br>
 Dzięki za korzystanie ze Szkolnego!<br>

app/src/main/cpp/szkolny-signing.cpp

@@ -9,7 +9,7 @@
 
 /*secret password - removed for source code publication*/
 static toys AES_IV[16] = {
-	0xa7, 0x84, 0xf9, 0xdc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  };
+	0x1c, 0x15, 0x0f, 0x1c, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff  };
 
 unsigned char *agony(unsigned int laugh, unsigned char *box, unsigned char *heat);
 

app/src/main/java/pl/szczodrzynski/edziennik/Extensions.kt

@@ -40,6 +40,9 @@ import androidx.core.util.forEach
 import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.Observer
+import androidx.recyclerview.widget.RecyclerView
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+import androidx.viewpager.widget.ViewPager
 import com.google.android.gms.security.ProviderInstaller
 import com.google.gson.JsonArray
 import com.google.gson.JsonElement
@@ -141,6 +144,10 @@ fun CharSequence?.isNotNullNorEmpty(): Boolean {
     return this != null && this.isNotEmpty()
 }
 
+fun <T> Collection<T>?.isNotNullNorEmpty(): Boolean {
+    return this != null && this.isNotEmpty()
+}
+
 fun CharSequence?.isNotNullNorBlank(): Boolean {
     return this != null && this.isNotBlank()
 }
@@ -722,6 +729,13 @@ inline fun <T : View> T.onClick(crossinline onClickListener: (v: T) -> Unit) {
     }
 }
 
+@Suppress("UNCHECKED_CAST")
+inline fun <T : View> T.onLongClick(crossinline onLongClickListener: (v: T) -> Boolean) {
+    setOnLongClickListener { v: View ->
+        onLongClickListener(v as T)
+    }
+}
+
 @Suppress("UNCHECKED_CAST")
 inline fun <T : CompoundButton> T.onChange(crossinline onChangeListener: (v: T, isChecked: Boolean) -> Unit) {
     setOnCheckedChangeListener { buttonView, isChecked ->
@@ -1167,3 +1181,19 @@ fun TextView.getTextPosition(range: IntRange): Rect {
 
     return parentTextViewRect
 }
+
+inline fun ViewPager.addOnPageSelectedListener(crossinline block: (position: Int) -> Unit) = addOnPageChangeListener(object : ViewPager.OnPageChangeListener {
+    override fun onPageScrollStateChanged(state: Int) {}
+    override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {}
+    override fun onPageSelected(position: Int) { block(position) }
+})
+
+val SwipeRefreshLayout.onScrollListener: RecyclerView.OnScrollListener
+    get() = object : RecyclerView.OnScrollListener() {
+        override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
+            if (recyclerView.canScrollVertically(-1))
+                this@onScrollListener.isEnabled = false
+            if (!recyclerView.canScrollVertically(-1) && newState == RecyclerView.SCROLL_STATE_IDLE)
+                this@onScrollListener.isEnabled = true
+        }
+    }

app/src/main/java/pl/szczodrzynski/edziennik/MainActivity.kt

@@ -61,7 +61,7 @@ import pl.szczodrzynski.edziennik.ui.modules.behaviour.BehaviourFragment
 import pl.szczodrzynski.edziennik.ui.modules.error.ErrorSnackbar
 import pl.szczodrzynski.edziennik.ui.modules.feedback.FeedbackFragment
 import pl.szczodrzynski.edziennik.ui.modules.feedback.HelpFragment
-import pl.szczodrzynski.edziennik.ui.modules.grades.GradesFragment
+import pl.szczodrzynski.edziennik.ui.modules.grades.GradesListFragment
 import pl.szczodrzynski.edziennik.ui.modules.grades.editor.GradesEditorFragment
 import pl.szczodrzynski.edziennik.ui.modules.home.HomeFragment
 import pl.szczodrzynski.edziennik.ui.modules.homework.HomeworkFragment
@@ -70,9 +70,10 @@ import pl.szczodrzynski.edziennik.ui.modules.messages.MessageFragment
 import pl.szczodrzynski.edziennik.ui.modules.messages.MessagesComposeFragment
 import pl.szczodrzynski.edziennik.ui.modules.messages.MessagesFragment
 import pl.szczodrzynski.edziennik.ui.modules.messages.MessagesListFragment
-import pl.szczodrzynski.edziennik.ui.modules.notifications.NotificationsFragment
+import pl.szczodrzynski.edziennik.ui.modules.notifications.NotificationsListFragment
 import pl.szczodrzynski.edziennik.ui.modules.settings.ProfileManagerFragment
 import pl.szczodrzynski.edziennik.ui.modules.settings.SettingsNewFragment
+import pl.szczodrzynski.edziennik.ui.modules.template.TemplateFragment
 import pl.szczodrzynski.edziennik.ui.modules.timetable.TimetableFragment
 import pl.szczodrzynski.edziennik.ui.modules.webpush.WebPushFragment
 import pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoTouch
@@ -129,6 +130,7 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
         const val TARGET_MESSAGES_DETAILS = 503
         const val TARGET_MESSAGES_COMPOSE = 504
         const val TARGET_WEB_PUSH = 140
+        const val TARGET_TEMPLATE = 1000
 
         const val HOME_ID = DRAWER_ITEM_HOME
 
@@ -153,7 +155,7 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
                     .withBadgeTypeId(TYPE_EVENT)
                     .isInDrawer(true)
 
-            list += NavTarget(DRAWER_ITEM_GRADES, R.string.menu_grades, GradesFragment::class)
+            list += NavTarget(DRAWER_ITEM_GRADES, R.string.menu_grades, GradesListFragment::class)
                     .withIcon(CommunityMaterial.Icon2.cmd_numeric_5_box_outline)
                     .withBadgeTypeId(TYPE_GRADE)
                     .isInDrawer(true)
@@ -185,7 +187,7 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
 
 
             // static drawer items
-            list += NavTarget(DRAWER_ITEM_NOTIFICATIONS, R.string.menu_notifications, NotificationsFragment::class)
+            list += NavTarget(DRAWER_ITEM_NOTIFICATIONS, R.string.menu_notifications, NotificationsListFragment::class)
                     .withIcon(CommunityMaterial.Icon.cmd_bell_ring_outline)
                     .isInDrawer(true)
                     .isStatic(true)
@@ -227,6 +229,13 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
             list += NavTarget(TARGET_MESSAGES_COMPOSE, R.string.menu_message_compose, MessagesComposeFragment::class)
             list += NavTarget(TARGET_WEB_PUSH, R.string.menu_web_push, WebPushFragment::class)
             list += NavTarget(DRAWER_ITEM_DEBUG, R.string.menu_debug, DebugFragment::class)
+            if (App.devMode) {
+                list += NavTarget(TARGET_TEMPLATE, R.string.menu_template, TemplateFragment::class)
+                        .withIcon(CommunityMaterial.Icon2.cmd_test_tube_empty)
+                        .isInDrawer(true)
+                        .isBelowSeparator(true)
+                        .isStatic(true)
+            }
 
             list
         }
@@ -1068,6 +1077,7 @@ class MainActivity : AppCompatActivity(), CoroutineScope {
                 .also { if (target.icon != null) it.withIcon(target.icon!!) }
                 .also { if (target.title != null) it.withAppTitle(getString(target.title!!)) }
                 .also { if (target.badgeTypeId != null) it.withBadgeStyle(drawer.badgeStyle)}
+                .withSelectedBackgroundAnimated(false)
 
         if (target.badgeTypeId != null)
             drawer.addUnreadCounterType(target.badgeTypeId!!, target.id)

app/src/main/java/pl/szczodrzynski/edziennik/config/Config.kt

@@ -22,7 +22,7 @@ import kotlin.coroutines.CoroutineContext
 
 class Config(val db: AppDb) : CoroutineScope, AbstractConfig {
     companion object {
-        const val DATA_VERSION = 11
+        const val DATA_VERSION = 12
     }
 
     private val job = Job()

app/src/main/java/pl/szczodrzynski/edziennik/config/ProfileConfig.kt

@@ -18,7 +18,7 @@ import kotlin.coroutines.CoroutineContext
 
 class ProfileConfig(val db: AppDb, val profileId: Int, rawEntries: List<ConfigEntry>) : CoroutineScope, AbstractConfig {
     companion object {
-        const val DATA_VERSION = 1
+        const val DATA_VERSION = 2
     }
 
     private val job = Job()

app/src/main/java/pl/szczodrzynski/edziennik/config/utils/ConfigMigration.kt

@@ -64,11 +64,25 @@ class ConfigMigration(app: App, config: Config) {
             dataVersion = 2
         }
 
+        if (dataVersion < 3) {
+            update = null
+            privacyPolicyAccepted = false
+            debugMode = false
+            devModePassword = null
+            appInstalledTime = 0L
+            appRateSnackbarTime = 0L
+
+            dataVersion = 3
+        }
+
         if (dataVersion < 10) {
             ui.openDrawerOnBackPressed = false
             ui.snowfall = false
             ui.bottomSheetOpened = false
             sync.dontShowAppManagerDialog = false
+            sync.webPushEnabled = true
+            sync.lastAppSync = 0L
+
 
             dataVersion = 10
         }

app/src/main/java/pl/szczodrzynski/edziennik/config/utils/ProfileConfigMigration.kt

@@ -5,6 +5,7 @@
 package pl.szczodrzynski.edziennik.config.utils
 
 import pl.szczodrzynski.edziennik.config.ProfileConfig
+import pl.szczodrzynski.edziennik.data.db.entity.Notification
 import pl.szczodrzynski.edziennik.data.db.entity.Profile.Companion.AGENDA_DEFAULT
 import pl.szczodrzynski.edziennik.utils.managers.GradesManager.Companion.COLOR_MODE_WEIGHTED
 import pl.szczodrzynski.edziennik.utils.managers.GradesManager.Companion.YEAR_ALL_GRADES
@@ -14,11 +15,23 @@ class ProfileConfigMigration(config: ProfileConfig) {
 
         if (dataVersion < 1) {
             grades.colorMode = COLOR_MODE_WEIGHTED
-            grades.dontCountEnabled = false
             grades.yearAverageMode = YEAR_ALL_GRADES
+            grades.hideImproved = false
+            grades.averageWithoutWeight = true
+            grades.plusValue = null
+            grades.minusValue = null
+            grades.dontCountEnabled = false
+            grades.dontCountGrades = listOf()
             ui.agendaViewType = AGENDA_DEFAULT
+            // no migration for ui.homeCards
 
             dataVersion = 1
         }
+
+        if (dataVersion < 2) {
+            sync.notificationFilter = sync.notificationFilter + Notification.TYPE_TEACHER_ABSENCE
+
+            dataVersion = 2
+        }
     }}
 }

app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/librus/data/messages/LibrusMessagesGetAttachment.kt

@@ -54,7 +54,7 @@ class LibrusMessagesGetAttachment(override val data: DataLibrus,
                     downloadAttachment("${LIBRUS_SANDBOX_URL}CSDownload&singleUseKey=$attachmentKey", method = POST)
                 }
             } else {
-                downloadAttachment(downloadLink, method = GET)
+                downloadAttachment("$downloadLink/get", method = GET)
             }
         }
     }

app/src/main/java/pl/szczodrzynski/edziennik/data/api/edziennik/mobidziennik/data/api/MobidziennikApiEvents.kt

@@ -75,6 +75,8 @@ class MobidziennikApiEvents(val data: DataMobidziennik, rows: List<String>) {
             }
         }
 
-        data.toRemove.add(DataRemoveModel.Events.futureExceptType(Event.TYPE_HOMEWORK))
+        data.toRemove.add(DataRemoveModel.Events.futureWithType(Event.TYPE_DEFAULT))
+        data.toRemove.add(DataRemoveModel.Events.futureWithType(Event.TYPE_EXAM))
+        data.toRemove.add(DataRemoveModel.Events.futureWithType(Event.TYPE_SHORT_QUIZ))
     }
 }

app/src/main/java/pl/szczodrzynski/edziennik/data/api/models/Data.kt

@@ -284,7 +284,7 @@ abstract class Data(val app: App, val profile: Profile?, val loginStore: LoginSt
             db.gradeDao().addAll(gradeList)
         }
         if (eventList.isNotEmpty()) {
-            db.eventDao().addAll(eventList)
+            db.eventDao().upsertAll(eventList, removeNotKept = true)
         }
         if (noticeList.isNotEmpty()) {
             db.noticeDao().clear(profile.id)

app/src/main/java/pl/szczodrzynski/edziennik/data/api/models/DataRemoveModel.kt

@@ -56,9 +56,9 @@ open class DataRemoveModel {
         }
 
         fun commit(profileId: Int, dao: EventDao) {
-            type?.let { dao.removeFutureWithType(profileId, Date.getToday(), it) }
-            exceptType?.let { dao.removeFutureExceptType(profileId, Date.getToday(), it) }
-            exceptTypes?.let { dao.removeFutureExceptTypes(profileId, Date.getToday(), it) }
+            type?.let { dao.dontKeepFutureWithType(profileId, Date.getToday(), it) }
+            exceptType?.let { dao.dontKeepFutureExceptType(profileId, Date.getToday(), it) }
+            exceptTypes?.let { dao.dontKeepFutureExceptTypes(profileId, Date.getToday(), it) }
         }
     }
 

app/src/main/java/pl/szczodrzynski/edziennik/data/api/szkolny/interceptor/Signing.kt

@@ -46,6 +46,6 @@ object Signing {
 
     /*fun provideKey(param1: String, param2: Long): ByteArray {*/
     fun pleaseStopRightNow(param1: String, param2: Long): ByteArray {
-        return "$param1.MTIzNDU2Nzg5MDZhgrg9J9===.$param2".sha256()
+        return "$param1.MTIzNDU2Nzg5MDj3yyZoD8===.$param2".sha256()
     }
 }

app/src/main/java/pl/szczodrzynski/edziennik/data/api/task/AppSync.kt

@@ -44,7 +44,7 @@ class AppSync(val app: App, val notifications: MutableList<Notification>, val pr
                         event.addedDate
                 )
             })
-            return app.db.eventDao().addAll(events).size
+            return app.db.eventDao().upsertAll(events).size
         }
         return 0;
     }

app/src/main/java/pl/szczodrzynski/edziennik/data/db/AppDb.kt

@@ -43,7 +43,7 @@ import pl.szczodrzynski.edziennik.data.db.migration.*
     LibrusLesson::class,
     TimetableManual::class,
     Metadata::class
-], version = 81)
+], version = 83)
 @TypeConverters(
         ConverterTime::class,
         ConverterDate::class,
@@ -166,7 +166,9 @@ abstract class AppDb : RoomDatabase() {
                 Migration78(),
                 Migration79(),
                 Migration80(),
-                Migration81()
+                Migration81(),
+                Migration82(),
+                Migration83()
         ).allowMainThreadQueries().build()
     }
 }

app/src/main/java/pl/szczodrzynski/edziennik/data/db/dao/BaseDao.kt

@@ -5,15 +5,13 @@
 package pl.szczodrzynski.edziennik.data.db.dao
 
 import androidx.lifecycle.LiveData
-import androidx.room.Dao
-import androidx.room.Insert
-import androidx.room.OnConflictStrategy
-import androidx.room.RawQuery
+import androidx.room.*
 import androidx.sqlite.db.SimpleSQLiteQuery
 import androidx.sqlite.db.SupportSQLiteQuery
+import pl.szczodrzynski.edziennik.data.db.entity.Keepable
 
 @Dao
-interface BaseDao<T, F> {
+interface BaseDao<T : Keepable, F : T> {
     @RawQuery
     fun getRaw(query: SupportSQLiteQuery): LiveData<List<F>>
     fun getRaw(query: String) = getRaw(SimpleSQLiteQuery(query))
@@ -24,11 +22,79 @@ interface BaseDao<T, F> {
     fun getOneNow(query: SupportSQLiteQuery): F?
     fun getOneNow(query: String) = getOneNow(SimpleSQLiteQuery(query))
 
-    @Insert(onConflict = OnConflictStrategy.REPLACE)
-    fun add(item: T): Long
+    @Query("DELETE FROM events WHERE keep = 0")
+    fun removeNotKept()
 
-    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    /**
+     * INSERT an [item] into the database,
+     * ignoring any conflicts.
+     */
+    @Insert(onConflict = OnConflictStrategy.IGNORE)
+    fun add(item: T): Long
+    /**
+     * INSERT [items] into the database,
+     * ignoring any conflicts.
+     */
+    @Insert(onConflict = OnConflictStrategy.IGNORE)
     fun addAll(items: List<T>): LongArray
 
+    /**
+     * REPLACE an [item] in the database,
+     * removing any conflicting rows.
+     */
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    fun replace(item: T)
+    /**
+     * REPLACE [items] in the database,
+     * removing any conflicting rows.
+     */
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    fun replaceAll(items: List<T>)
+
+    /**
+     * Selective UPDATE an [item] in the database.
+     * Do nothing if a matching item does not exist.
+     */
+    fun update(item: T): Long
+    /**
+     * Selective UPDATE [items] in the database.
+     * Do nothing for those items which do not exist.
+     */
+    fun updateAll(items: List<T>): LongArray
+
+    /**
+     * Remove all items from the database,
+     * that match the given [profileId].
+     */
     fun clear(profileId: Int)
+
+    /**
+     * INSERT an [item] into the database,
+     * doing a selective [update] on conflicts.
+     * @return the newly inserted item's ID or -1L if the item was updated instead
+     */
+    @Transaction
+    fun upsert(item: T): Long {
+        val id = add(item)
+        if (id == -1L) update(item)
+        return id
+    }
+    /**
+     * INSERT [items] into the database,
+     * doing a selective [update] on conflicts.
+     * @return a [LongArray] of IDs of newly inserted items or -1L if the item existed before
+     */
+    @Transaction
+    fun upsertAll(items: List<T>, removeNotKept: Boolean = false): LongArray {
+        val insertResult = addAll(items)
+        val updateList = mutableListOf<T>()
+
+        insertResult.forEachIndexed { index, result ->
+            if (result == -1L) updateList.add(items[index])
+        }
+
+        if (updateList.isNotEmpty()) updateAll(items)
+        if (removeNotKept) removeNotKept()
+        return insertResult
+    }
 }

app/src/main/java/pl/szczodrzynski/edziennik/data/db/dao/EventDao.kt

@@ -10,6 +10,10 @@ import androidx.room.RawQuery
 import androidx.room.Transaction
 import androidx.sqlite.db.SimpleSQLiteQuery
 import androidx.sqlite.db.SupportSQLiteQuery
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.annotation.SelectiveDao
+import pl.szczodrzynski.edziennik.annotation.UpdateSelective
+import pl.szczodrzynski.edziennik.data.db.AppDb
 import pl.szczodrzynski.edziennik.data.db.entity.Event
 import pl.szczodrzynski.edziennik.data.db.entity.Metadata
 import pl.szczodrzynski.edziennik.data.db.full.EventFull
@@ -17,6 +21,7 @@ import pl.szczodrzynski.edziennik.utils.models.Date
 import pl.szczodrzynski.edziennik.utils.models.Time
 
 @Dao
+@SelectiveDao(db = AppDb::class)
 abstract class EventDao : BaseDao<Event, EventFull> {
     companion object {
         private const val QUERY = """
@@ -35,19 +40,91 @@ abstract class EventDao : BaseDao<Event, EventFull> {
 
         private const val ORDER_BY = """GROUP BY eventId ORDER BY eventDate, eventTime, addedDate ASC"""
         private const val NOT_BLACKLISTED = """events.eventBlacklisted = 0"""
+        private const val NOT_DONE = """events.eventIsDone = 0"""
     }
 
-    //abstract fun queryRaw(query: SupportSQLiteQuery)
-    //private fun queryRaw(query: String) = queryRaw(SimpleSQLiteQuery(query))
+    private val selective by lazy { EventDaoSelective(App.db) }
 
+    @RawQuery(observedEntities = [Event::class])
+    abstract override fun getRaw(query: SupportSQLiteQuery): LiveData<List<EventFull>>
+
+    // SELECTIVE UPDATE
+    @UpdateSelective(primaryKeys = ["profileId", "eventId"], skippedColumns = ["eventIsDone", "eventBlacklisted", "homeworkBody", "attachmentIds", "attachmentNames"])
+    override fun update(item: Event) = selective.update(item)
+    override fun updateAll(items: List<Event>) = selective.updateAll(items)
+
+    // CLEAR
     @Query("DELETE FROM events WHERE profileId = :profileId")
     abstract override fun clear(profileId: Int)
 
-    /*fun update(event: Event) =
-            queryRaw("""UPDATE events SET 
-                eventDate = '${event.date.stringY_m_d}',
-                eventTime = ${event.time?.stringValue},
-                eventTopic = '${event.topic}'""")*/
+    // GET ALL - LIVE DATA
+    fun getAll(profileId: Int) =
+            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId $ORDER_BY")
+    fun getAllByType(profileId: Int, type: Long, filter: String = "1") =
+            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND eventType = $type AND $filter $ORDER_BY")
+    fun getAllByDate(profileId: Int, date: Date) =
+            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND eventDate = '${date.stringY_m_d}' $ORDER_BY")
+    fun getAllByDateTime(profileId: Int, date: Date, time: Time) =
+            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND eventDate = '${date.stringY_m_d}' AND eventTime = '${time.stringValue}'")
+    fun getNearestNotDone(profileId: Int, today: Date, limit: Int) =
+            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND $NOT_DONE AND events.profileId = $profileId AND eventDate >= '${today.stringY_m_d}' $ORDER_BY LIMIT $limit")
+
+    // GET ALL - NOW
+    fun getAllNow(profileId: Int) =
+            getRawNow("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId $ORDER_BY")
+    fun getNotNotifiedNow() =
+            getRawNow("$QUERY WHERE $NOT_BLACKLISTED AND notified = 0 $ORDER_BY")
+    fun getNotNotifiedNow(profileId: Int) =
+            getRawNow("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND notified = 0 $ORDER_BY")
+    fun getAllByDateNow(profileId: Int, date: Date) =
+            getRawNow("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND eventDate = '${date.stringY_m_d}' $ORDER_BY")
+
+    // GET ONE - NOW
+    fun getByIdNow(profileId: Int, id: Long) =
+            getOneNow("$QUERY WHERE events.profileId = $profileId AND eventId = $id")
+
+
+    @Query("SELECT eventId FROM events WHERE profileId = :profileId AND eventBlacklisted = 1")
+    abstract fun getBlacklistedIds(profileId: Int): List<Long>
+
+    @get:Query("SELECT eventId FROM events WHERE eventBlacklisted = 1")
+    abstract val blacklistedIds: List<Long>
+
+    /*@Query("UPDATE events SET eventAddedManually = 1 WHERE profileId = :profileId AND eventDate < :date")
+    abstract fun convertOlderToManual(profileId: Int, date: Date?)
+
+    @Query("DELETE FROM events WHERE teamId = :teamId AND eventId = :id")
+    abstract fun removeByTeamId(teamId: Long, id: Long)
+
+    @Query("DELETE FROM events WHERE profileId = :profileId AND eventAddedManually = 0")
+    abstract fun removeNotManual(profileId: Int)*/
+
+    @RawQuery
+    abstract fun dontKeepFuture(query: SupportSQLiteQuery?): Long
+
+    @Transaction
+    open fun dontKeepFuture(profileId: Int, todayDate: Date, filter: String) {
+        dontKeepFuture(SimpleSQLiteQuery("UPDATE events SET keep = 0 WHERE profileId = " + profileId
+                + " AND eventAddedManually = 0 AND eventDate >= '" + todayDate.stringY_m_d + "'" +
+                " AND " + filter))
+    }
+
+    @Query("UPDATE events SET keep = 0 WHERE profileId = :profileId AND eventAddedManually = 0 AND eventDate >= :todayDate AND eventType = :type")
+    abstract fun dontKeepFutureWithType(profileId: Int, todayDate: Date, type: Long)
+
+    @Query("UPDATE events SET keep = 0 WHERE profileId = :profileId AND eventAddedManually = 0 AND eventDate >= :todayDate AND eventType != :exceptType")
+    abstract fun dontKeepFutureExceptType(profileId: Int, todayDate: Date, exceptType: Long)
+
+    @Transaction
+    open fun dontKeepFutureExceptTypes(profileId: Int, todayDate: Date, exceptTypes: List<Long>) {
+        dontKeepFuture(profileId, todayDate, "eventType NOT IN " + exceptTypes.toString().replace('[', '(').replace(']', ')'))
+    }
+
+    @Query("UPDATE metadata SET seen = :seen WHERE profileId = :profileId AND (thingType = " + Metadata.TYPE_EVENT + " OR thingType = " + Metadata.TYPE_LESSON_CHANGE + " OR thingType = " + Metadata.TYPE_HOMEWORK + ") AND thingId IN (SELECT eventId FROM events WHERE profileId = :profileId AND eventDate = :date)")
+    abstract fun setSeenByDate(profileId: Int, date: Date, seen: Boolean)
+
+    @Query("UPDATE events SET eventBlacklisted = :blacklisted WHERE profileId = :profileId AND eventId = :eventId")
+    abstract fun setBlacklisted(profileId: Int, eventId: Long, blacklisted: Boolean)
 
     @Query("DELETE FROM events WHERE profileId = :profileId AND eventId = :id")
     abstract fun remove(profileId: Int, id: Long)
@@ -71,80 +148,4 @@ abstract class EventDao : BaseDao<Event, EventFull> {
         remove(profileId, event.type, event.id)
     }
 
-    @RawQuery(observedEntities = [Event::class])
-    abstract override fun getRaw(query: SupportSQLiteQuery): LiveData<List<EventFull>>
-
-
-
-    fun getAll(profileId: Int) =
-            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId $ORDER_BY")
-    fun getAllByType(profileId: Int, type: Long, filter: String = "1") =
-            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND eventType = $type AND $filter $ORDER_BY")
-    fun getAllByDate(profileId: Int, date: Date) =
-            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND eventDate = '${date.stringY_m_d}' $ORDER_BY")
-    fun getAllByDateTime(profileId: Int, date: Date, time: Time) =
-            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND eventDate = '${date.stringY_m_d}' AND eventTime = ${time.stringValue}")
-    fun getAllNearest(profileId: Int, today: Date, limit: Int) =
-            getRaw("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND eventDate >= '${today.stringY_m_d}' $ORDER_BY LIMIT $limit")
-
-
-
-    fun getAllNow(profileId: Int) =
-            getRawNow("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId $ORDER_BY")
-    fun getNotNotifiedNow() =
-            getRawNow("$QUERY WHERE $NOT_BLACKLISTED AND notified = 0 $ORDER_BY")
-    fun getNotNotifiedNow(profileId: Int) =
-            getRawNow("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND notified = 0 $ORDER_BY")
-    fun getAllByDateNow(profileId: Int, date: Date) =
-            getRawNow("$QUERY WHERE $NOT_BLACKLISTED AND events.profileId = $profileId AND eventDate = '${date.stringY_m_d}' $ORDER_BY")
-
-
-
-    fun getByIdNow(profileId: Int, id: Long) =
-            getOneNow("$QUERY WHERE events.profileId = $profileId AND eventId = $id")
-
-
-
-    @Query("SELECT eventId FROM events WHERE profileId = :profileId AND eventBlacklisted = 1")
-    abstract fun getBlacklistedIds(profileId: Int): List<Long>
-
-    @get:Query("SELECT eventId FROM events WHERE eventBlacklisted = 1")
-    abstract val blacklistedIds: List<Long>
-
-    @Query("UPDATE events SET eventAddedManually = 1 WHERE profileId = :profileId AND eventDate < :date")
-    abstract fun convertOlderToManual(profileId: Int, date: Date?)
-
-    @Query("DELETE FROM events WHERE teamId = :teamId AND eventId = :id")
-    abstract fun removeByTeamId(teamId: Long, id: Long)
-
-    @Query("DELETE FROM events WHERE profileId = :profileId AND eventAddedManually = 0")
-    abstract fun removeNotManual(profileId: Int)
-
-    @RawQuery
-    abstract fun removeFuture(query: SupportSQLiteQuery?): Long
-
-    @Transaction
-    open fun removeFuture(profileId: Int, todayDate: Date, filter: String) {
-        removeFuture(SimpleSQLiteQuery("DELETE FROM events WHERE profileId = " + profileId
-                + " AND eventAddedManually = 0 AND eventDate >= '" + todayDate.stringY_m_d + "'" +
-                " AND " + filter))
-    }
-
-    @Query("DELETE FROM events WHERE profileId = :profileId AND eventAddedManually = 0 AND eventDate >= :todayDate AND eventType = :type")
-    abstract fun removeFutureWithType(profileId: Int, todayDate: Date, type: Long)
-
-    @Query("DELETE FROM events WHERE profileId = :profileId AND eventAddedManually = 0 AND eventDate >= :todayDate AND eventType != :exceptType")
-    abstract fun removeFutureExceptType(profileId: Int, todayDate: Date, exceptType: Long)
-
-    @Transaction
-    open fun removeFutureExceptTypes(profileId: Int, todayDate: Date, exceptTypes: List<Long>) {
-        removeFuture(profileId, todayDate, "eventType NOT IN " + exceptTypes.toString().replace('[', '(').replace(']', ')'))
-    }
-
-    @Query("UPDATE metadata SET seen = :seen WHERE profileId = :profileId AND (thingType = " + Metadata.TYPE_EVENT + " OR thingType = " + Metadata.TYPE_LESSON_CHANGE + " OR thingType = " + Metadata.TYPE_HOMEWORK + ") AND thingId IN (SELECT eventId FROM events WHERE profileId = :profileId AND eventDate = :date)")
-    abstract fun setSeenByDate(profileId: Int, date: Date, seen: Boolean)
-
-    @Query("UPDATE events SET eventBlacklisted = :blacklisted WHERE profileId = :profileId AND eventId = :eventId")
-    abstract fun setBlacklisted(profileId: Int, eventId: Long, blacklisted: Boolean)
-
 }

app/src/main/java/pl/szczodrzynski/edziennik/data/db/entity/Event.kt

@@ -42,7 +42,7 @@ open class Event(
         var teacherId: Long,
         var subjectId: Long,
         var teamId: Long
-) {
+) : Keepable() {
     companion object {
         const val TYPE_UNDEFINED = -2L
         const val TYPE_HOMEWORK = -1L
@@ -79,6 +79,8 @@ open class Event(
     var sharedByName: String? = null
     @ColumnInfo(name = "eventBlacklisted")
     var blacklisted: Boolean = false
+    @ColumnInfo(name = "eventIsDone")
+    var isDone: Boolean = false
 
     var homeworkBody: String? = null
     var attachmentIds: List<Long>? = null

app/src/main/java/pl/szczodrzynski/edziennik/data/db/entity/Keepable.kt

@@ -0,0 +1,9 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
+package pl.szczodrzynski.edziennik.data.db.entity
+
+abstract class Keepable {
+    var keep: Boolean = true
+}

app/src/main/java/pl/szczodrzynski/edziennik/data/db/migration/Migration82.kt

@@ -0,0 +1,10 @@
+package pl.szczodrzynski.edziennik.data.db.migration
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration82 : Migration(81, 82) {
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL("ALTER TABLE events ADD COLUMN eventIsDone INTEGER DEFAULT 0 NOT NULL")
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/data/db/migration/Migration83.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
+package pl.szczodrzynski.edziennik.data.db.migration
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration83 : Migration(82, 83) {
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL("ALTER TABLE events ADD COLUMN keep INTEGER NOT NULL DEFAULT 1")
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/data/firebase/SzkolnyAppFirebase.kt

@@ -152,7 +152,7 @@ class SzkolnyAppFirebase(val app: App, val profiles: List<Profile>, val message:
             events += event
             metadataList += metadata
         }
-        app.db.eventDao().addAll(events)
+        app.db.eventDao().upsertAll(events)
         app.db.metadataDao().addAllReplace(metadataList)
         if (notificationList.isNotEmpty()) {
             app.db.notificationDao().addAll(notificationList)

app/src/main/java/pl/szczodrzynski/edziennik/ui/TemplateAdapter.kt

@@ -1,50 +0,0 @@
-/*
- * Copyright (c) Kuba Szczodrzyński 2019-12-19.
- */
-
-package pl.szczodrzynski.edziennik.ui
-
-import android.content.Context
-import android.view.LayoutInflater
-import android.view.ViewGroup
-import androidx.recyclerview.widget.RecyclerView
-import pl.szczodrzynski.edziennik.App
-import pl.szczodrzynski.edziennik.databinding.TemplateListItemBinding
-import pl.szczodrzynski.edziennik.onClick
-
-class TemplateAdapter(
-        val context: Context,
-        val onItemClick: ((item: TemplateItem) -> Unit)? = null,
-        val onItemButtonClick: ((item: TemplateItem) -> Unit)? = null
-) : RecyclerView.Adapter<TemplateAdapter.ViewHolder>() {
-
-    private val app by lazy { context.applicationContext as App }
-
-    var items = listOf<TemplateItem>()
-
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val inflater = LayoutInflater.from(parent.context)
-        val view = TemplateListItemBinding.inflate(inflater, parent, false)
-        return ViewHolder(view)
-    }
-
-    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val item = items[position]
-        val b = holder.b
-
-        onItemClick?.let { listener ->
-            b.root.onClick { listener(item) }
-        }
-
-        /*b.someButton.visibility = if (buttonVisible) View.VISIBLE else View.GONE
-        onItemButtonClick?.let { listener ->
-            b.someButton.onClick { listener(item) }
-        }*/
-    }
-
-    override fun getItemCount() = items.size
-
-    class ViewHolder(val b: TemplateListItemBinding) : RecyclerView.ViewHolder(b.root)
-
-    data class TemplateItem(val text: String)
-}

app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/day/DayDialog.kt

@@ -146,6 +146,11 @@ class DayDialog(
 
         adapter = EventListAdapter(
                 activity,
+                showWeekDay = false,
+                showDate = false,
+                showType = true,
+                showTime = true,
+                showSubject = true,
                 onItemClick = {
                     EventDetailsDialog(
                             activity,

app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/event/EventDetailsDialog.kt

@@ -148,6 +148,10 @@ class EventDetailsDialog(
             openInCalendar()
         }
 
+        b.checkDoneButton.setOnLongClickListener {
+            Toast.makeText(activity, R.string.hint_mark_as_done, Toast.LENGTH_SHORT).show()
+            true
+        }
         b.goToTimetableButton.setOnLongClickListener {
             Toast.makeText(activity, R.string.hint_go_to_timetable, Toast.LENGTH_SHORT).show()
             true
@@ -161,6 +165,14 @@ class EventDetailsDialog(
             true
         }
 
+        b.checkDoneButton.isChecked = event.isDone
+        b.checkDoneButton.addOnCheckedChangeListener { _, isChecked ->
+            event.isDone = isChecked
+            launch(Dispatchers.Default) {
+                app.db.eventDao().replace(event)
+            }
+        }
+
         b.topic.text = event.topic
         BetterLink.attach(b.topic) {
             dialog.dismiss()

app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/event/EventListAdapter.kt

@@ -6,9 +6,9 @@ package pl.szczodrzynski.edziennik.ui.dialogs.event
 
 import android.content.Context
 import android.view.LayoutInflater
-import android.view.View
 import android.view.ViewGroup
 import android.widget.Toast
+import androidx.core.view.isVisible
 import androidx.recyclerview.widget.RecyclerView
 import pl.szczodrzynski.edziennik.*
 import pl.szczodrzynski.edziennik.data.db.full.EventFull
@@ -19,8 +19,11 @@ import pl.szczodrzynski.edziennik.utils.models.Week
 class EventListAdapter(
         val context: Context,
         val simpleMode: Boolean = false,
-        val showDate: Boolean = false,
         val showWeekDay: Boolean = false,
+        val showDate: Boolean = false,
+        val showType: Boolean = true,
+        val showTime: Boolean = true,
+        val showSubject: Boolean = true,
         val onItemClick: ((event: EventFull) -> Unit)? = null,
         val onEventEditClick: ((event: EventFull) -> Unit)? = null
 ) : RecyclerView.Adapter<EventListAdapter.ViewHolder>() {
@@ -48,13 +51,14 @@ class EventListAdapter(
         b.simpleMode = simpleMode
 
         b.topic.text = event.topic
+        b.topic.maxLines = if (simpleMode) 2 else 3
 
         b.details.text = mutableListOf<CharSequence?>(
                 if (showWeekDay) Week.getFullDayName(event.date.weekDay) else null,
                 if (showDate) event.date.getRelativeString(context, 7) ?: event.date.formattedStringShort else null,
-                event.typeName,
-                if (simpleMode) null else event.time?.stringHM ?: app.getString(R.string.event_all_day),
-                if (simpleMode) null else event.subjectLongName
+                if (showType) event.typeName else null,
+                if (showTime) event.time?.stringHM ?: app.getString(R.string.event_all_day) else null,
+                if (showSubject) event.subjectLongName else null
         ).concat(bullet)
 
         b.addedBy.setText(
@@ -73,12 +77,15 @@ class EventListAdapter(
         )
 
         b.typeColor.background?.setTintColor(event.eventColor)
+        b.typeColor.isVisible = showType
 
-        b.editButton.visibility = if (event.addedManually && !simpleMode) View.VISIBLE else View.GONE
+        b.editButton.isVisible = !simpleMode && event.addedManually && !event.isDone
         b.editButton.onClick {
             onEventEditClick?.invoke(event)
         }
 
+        b.isDone.isVisible = event.isDone
+
         b.editButton.setOnLongClickListener {
             Toast.makeText(context, R.string.hint_edit_event, Toast.LENGTH_SHORT).show()
             true

app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/event/EventManualDialog.kt

@@ -587,7 +587,7 @@ class EventManualDialog(
     private fun finishAdding(eventObject: Event, metadataObject: Metadata) {
         launch {
             withContext(Dispatchers.Default) {
-                app.db.eventDao().add(eventObject)
+                app.db.eventDao().upsert(eventObject)
                 app.db.metadataDao().add(metadataObject)
             }
         }

app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/timetable/LessonDetailsDialog.kt

@@ -170,6 +170,11 @@ class LessonDetailsDialog(
 
         adapter = EventListAdapter(
                 activity,
+                showWeekDay = false,
+                showDate = false,
+                showType = true,
+                showTime = true,
+                showSubject = true,
                 onItemClick = {
                     EventDetailsDialog(
                             activity,

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/base/PagerFragment.kt

@@ -1,28 +0,0 @@
-/*
- * Copyright (c) Kuba Szczodrzyński 2020-2-22.
- */
-
-package pl.szczodrzynski.edziennik.ui.modules.base
-
-import androidx.fragment.app.Fragment
-
-abstract class PagerFragment : Fragment() {
-    private var isPageCreated = false
-
-    /**
-     * Called when the page is first shown, or if previous
-     * [onPageCreated] returned false
-     *
-     * @return true if the view is set up
-     * @return false if the setup failed. The method may be then called
-     * again, when page becomes visible.
-     */
-    abstract fun onPageCreated(): Boolean
-
-    override fun onResume() {
-        if (!isPageCreated) {
-            isPageCreated = onPageCreated()
-        }
-        super.onResume()
-    }
-}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/base/lazypager/FragmentLazyPagerAdapter.kt

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.base.lazypager
+
+import androidx.fragment.app.FragmentManager
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+
+class FragmentLazyPagerAdapter(
+        fragmentManager: FragmentManager,
+        swipeRefreshLayout: SwipeRefreshLayout,
+        private val fragments: List<Pair<LazyFragment, CharSequence>>
+) : LazyPagerAdapter(fragmentManager, swipeRefreshLayout) {
+    override fun getPage(position: Int) = fragments[position].first
+    override fun getPageTitle(position: Int) = fragments[position].second
+    override fun getCount() = fragments.size
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/base/lazypager/LazyFragment.kt

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-29.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.base.lazypager
+
+import androidx.fragment.app.Fragment
+import androidx.recyclerview.widget.RecyclerView
+
+abstract class LazyFragment : Fragment() {
+    private var isPageCreated = false
+    internal var position = -1
+    internal var swipeRefreshLayoutCallback: ((position: Int, isEnabled: Boolean) -> Unit)? = null
+
+    /**
+     * Called when the page is first shown, or if previous
+     * [onPageCreated] returned false
+     *
+     * @return true if the view is set up
+     * @return false if the setup failed. The method may be then called
+     * again, when page becomes visible.
+     */
+    abstract fun onPageCreated(): Boolean
+
+    fun enableSwipeToRefresh() = swipeRefreshLayoutCallback?.invoke(position, true)
+    fun disableSwipeToRefresh() = swipeRefreshLayoutCallback?.invoke(position, false)
+    fun setSwipeToRefresh(enabled: Boolean) = swipeRefreshLayoutCallback?.invoke(position, enabled)
+
+    val onScrollListener: RecyclerView.OnScrollListener
+        get() = object : RecyclerView.OnScrollListener() {
+            override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
+                if (recyclerView.canScrollVertically(-1))
+                    disableSwipeToRefresh()
+                if (!recyclerView.canScrollVertically(-1) && newState == RecyclerView.SCROLL_STATE_IDLE)
+                    enableSwipeToRefresh()
+            }
+        }
+
+    internal fun createPage() {
+        if (!isPageCreated && isAdded) {
+            isPageCreated = onPageCreated()
+        }
+    }
+
+    override fun onDestroyView() {
+        isPageCreated = false
+        super.onDestroyView()
+    }
+
+    override fun onResume() {
+        createPage()
+        super.onResume()
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/base/lazypager/LazyPagerAdapter.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-29.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.base.lazypager
+
+import android.util.SparseBooleanArray
+import androidx.core.util.set
+import androidx.fragment.app.FragmentManager
+import androidx.fragment.app.FragmentStatePagerAdapter
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+
+abstract class LazyPagerAdapter(fragmentManager: FragmentManager, val swipeRefreshLayout: SwipeRefreshLayout? = null) : FragmentStatePagerAdapter(fragmentManager, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
+    internal val enabledList = SparseBooleanArray()
+    private val refreshLayoutCallback: (position: Int, isEnabled: Boolean) -> Unit = { position, isEnabled ->
+        swipeRefreshLayout?.isEnabled = isEnabled
+        if (position > -1)
+            enabledList[position] = isEnabled
+    }
+    final override fun getItem(position: Int): LazyFragment {
+        return getPage(position).also {
+            it.position = position
+            it.swipeRefreshLayoutCallback = refreshLayoutCallback
+        }
+    }
+    abstract fun getPage(position: Int): LazyFragment
+    abstract override fun getPageTitle(position: Int): CharSequence
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/base/lazypager/LazyViewPager.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-29.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.base.lazypager
+
+import android.content.Context
+import android.util.AttributeSet
+import androidx.viewpager.widget.ViewPager
+
+class LazyViewPager @JvmOverloads constructor(
+        context: Context, attrs: AttributeSet? = null
+) : ViewPager(context, attrs) {
+
+    private var pageSelection = -1
+    private var scrollState = 0
+
+    init {
+        addOnPageChangeListener(object : OnPageChangeListener {
+            override fun onPageScrollStateChanged(state: Int) {
+                scrollState = state
+                (adapter as? LazyPagerAdapter)?.let {
+                    it.swipeRefreshLayout?.isEnabled = state == SCROLL_STATE_IDLE && it.enabledList[pageSelection, true]
+                }
+            }
+
+            override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {
+
+            }
+
+            override fun onPageSelected(position: Int) {
+                pageSelection = position
+                (adapter as? LazyPagerAdapter)?.let {
+                    it.swipeRefreshLayout?.isEnabled = scrollState == SCROLL_STATE_IDLE && it.enabledList[pageSelection, true]
+                    val fragment = adapter?.instantiateItem(this@LazyViewPager, position)
+                    val lazyFragment = fragment as? LazyFragment
+                    lazyFragment?.createPage()
+                }
+            }
+        })
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/grades/GradesListFragment.kt

@@ -10,11 +10,10 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.Toast
+import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
-import androidx.recyclerview.widget.RecyclerView.SCROLL_STATE_IDLE
 import com.mikepenz.iconics.typeface.library.community.material.CommunityMaterial
 import com.mikepenz.iconics.typeface.library.community.material.CommunityMaterial.Icon2
 import kotlinx.coroutines.*
@@ -23,7 +22,7 @@ import pl.szczodrzynski.edziennik.MainActivity.Companion.TARGET_GRADES_EDITOR
 import pl.szczodrzynski.edziennik.data.db.entity.Grade
 import pl.szczodrzynski.edziennik.data.db.entity.Metadata.TYPE_GRADE
 import pl.szczodrzynski.edziennik.data.db.full.GradeFull
-import pl.szczodrzynski.edziennik.databinding.GradesFragmentBinding
+import pl.szczodrzynski.edziennik.databinding.GradesListFragmentBinding
 import pl.szczodrzynski.edziennik.ui.dialogs.grade.GradeDetailsDialog
 import pl.szczodrzynski.edziennik.ui.dialogs.settings.GradesConfigDialog
 import pl.szczodrzynski.edziennik.ui.modules.grades.models.GradesAverages
@@ -36,24 +35,20 @@ import pl.szczodrzynski.navlib.bottomsheet.items.BottomSheetSeparatorItem
 import kotlin.coroutines.CoroutineContext
 import kotlin.math.max
 
-
-class GradesFragment : Fragment(), CoroutineScope {
+class GradesListFragment : Fragment(), CoroutineScope {
     companion object {
         private const val TAG = "GradesFragment"
     }
 
     private lateinit var app: App
     private lateinit var activity: MainActivity
-    private lateinit var b: GradesFragmentBinding
+    private lateinit var b: GradesListFragmentBinding
 
     private val job: Job = Job()
     override val coroutineContext: CoroutineContext
         get() = job + Dispatchers.Main
 
     // local/private variables go here
-    private val adapter by lazy {
-        GradesAdapter(activity)
-    }
     private val manager by lazy { app.gradesManager }
     private val dontCountEnabled by lazy { manager.dontCountEnabled }
     private val dontCountGrades by lazy { manager.dontCountGrades }
@@ -63,51 +58,49 @@ class GradesFragment : Fragment(), CoroutineScope {
         activity = (getActivity() as MainActivity?) ?: return null
         context ?: return null
         app = activity.application as App
-        b = GradesFragmentBinding.inflate(inflater)
+        b = GradesListFragmentBinding.inflate(inflater)
         b.refreshLayout.setParent(activity.swipeRefreshLayout)
         return b.root
     }
 
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        if (!isAdded)
-            return
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) { startCoroutineTimer(100L) {
+        if (!isAdded) return@startCoroutineTimer
 
         expandSubjectId = arguments?.getLong("gradesSubjectId") ?: 0L
 
-        app.db.gradeDao()
-                .getAllOrderBy(App.profileId, app.gradesManager.getOrderByString())
-                .observe(this, Observer { grades ->
-                    if (b.gradesRecyclerView.adapter == null) {
-                        b.gradesRecyclerView.adapter = adapter
-                        b.gradesRecyclerView.apply {
-                            setHasFixedSize(true)
-                            layoutManager = LinearLayoutManager(context)
-                            //addItemDecoration(SimpleDividerItemDecoration(context))
-                            addOnScrollListener(object : RecyclerView.OnScrollListener() {
-                                override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
-                                    if (recyclerView.canScrollVertically(-1)) {
-                                        b.refreshLayout.isEnabled = false
-                                    }
-                                    if (!recyclerView.canScrollVertically(-1) && newState == SCROLL_STATE_IDLE) {
-                                        b.refreshLayout.isEnabled = true
-                                    }
-                                }
-                            })
-                        }
-                    }
+        val adapter = GradesAdapter(activity)
+        var firstRun = true
 
-                    launch(Dispatchers.Default) {
-                        processGrades(grades)
-                    }
+        app.db.gradeDao().getAllOrderBy(App.profileId, app.gradesManager.getOrderByString()).observe(this, Observer { items -> launch {
+            if (!isAdded) return@launch
 
-                    if (grades != null && grades.isNotEmpty()) {
-                        b.gradesRecyclerView.visibility = View.VISIBLE
-                        b.gradesNoData.visibility = View.GONE
-                    } else {
-                        b.gradesRecyclerView.visibility = View.GONE
-                        b.gradesNoData.visibility = View.VISIBLE
-                    }
-                })
+            // load & configure the adapter
+            adapter.items = withContext(Dispatchers.Default) { processGrades(items) }
+            if (items.isNotNullNorEmpty() && b.list.adapter == null) {
+                b.list.adapter = adapter
+                b.list.apply {
+                    setHasFixedSize(true)
+                    layoutManager = LinearLayoutManager(context)
+                    addOnScrollListener(b.refreshLayout.onScrollListener)
+                }
+            }
+            adapter.notifyDataSetChanged()
+
+            if (firstRun) {
+                expandSubject(adapter)
+                firstRun = false
+            }
+
+            // show/hide relevant views
+            b.progressBar.isVisible = false
+            if (items.isNullOrEmpty()) {
+                b.list.isVisible = false
+                b.noData.isVisible = true
+            } else {
+                b.list.isVisible = true
+                b.noData.isVisible = false
+            }
+        }})
 
         adapter.onGradeClick = {
             GradeDetailsDialog(activity, it)
@@ -153,10 +146,30 @@ class GradesFragment : Fragment(), CoroutineScope {
                         })
         )
         activity.gainAttention()
+    }}
+
+    private fun expandSubject(adapter: GradesAdapter) {
+        var expandSubjectModel: GradesSubject? = null
+        if (expandSubjectId != 0L) {
+            expandSubjectModel = adapter.items.firstOrNull { it is GradesSubject && it.subjectId == expandSubjectId } as? GradesSubject
+            adapter.expandModel(
+                    model = expandSubjectModel,
+                    view = null,
+                    notifyAdapter = false
+            )
+        }
+
+        startCoroutineTimer(500L) {
+            if (expandSubjectModel != null) {
+                b.list.smoothScrollToPosition(
+                        adapter.items.indexOf(expandSubjectModel) + expandSubjectModel.semesters.size + (expandSubjectModel.semesters.firstOrNull()?.grades?.size ?: 0)
+                )
+            }
+        }
     }
 
     @Suppress("SuspendFunctionOnCoroutineScope")
-    private suspend fun processGrades(grades: List<GradeFull>) {
+    private fun processGrades(grades: List<GradeFull>): MutableList<Any> {
         val items = mutableListOf<GradesSubject>()
 
         var subjectId = -1L
@@ -284,30 +297,7 @@ class GradesFragment : Fragment(), CoroutineScope {
             GradesManager.ORDER_BY_DATE_ASC -> items.sortBy { it.lastAddedDate }
         }
 
-        adapter.items = items.toMutableList()
-        adapter.items.add(stats)
-
-        var expandSubjectModel: GradesSubject? = null
-        if (expandSubjectId != 0L) {
-            expandSubjectModel = items.firstOrNull { it.subjectId == expandSubjectId }
-            adapter.expandModel(
-                    model = expandSubjectModel,
-                    view = null,
-                    notifyAdapter = false
-            )
-        }
-
-        withContext(Dispatchers.Main) {
-            adapter.notifyDataSetChanged()
-        }
-
-        startCoroutineTimer(500L, 0L) {
-            if (expandSubjectModel != null) {
-                b.gradesRecyclerView.smoothScrollToPosition(
-                        items.indexOf(expandSubjectModel) + expandSubjectModel.semesters.size + (expandSubjectModel.semesters.firstOrNull()?.grades?.size ?: 0)
-                )
-            }
-        }
+        return (items + stats).toMutableList()
     }
 
     private fun countGrade(grade: Grade, averages: GradesAverages) {

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/home/cards/HomeEventsCard.kt

@@ -60,8 +60,11 @@ class HomeEventsCard(
         adapter = EventListAdapter(
                 activity,
                 simpleMode = true,
-                showDate = true,
                 showWeekDay = true,
+                showDate = true,
+                showType = true,
+                showTime = false,
+                showSubject = false,
                 onItemClick = {
                     EventDetailsDialog(
                             activity,
@@ -77,7 +80,7 @@ class HomeEventsCard(
                 }
         )
 
-        app.db.eventDao().getAllNearest(profile.id, Date.getToday(), 4).observe(activity, Observer { events ->
+        app.db.eventDao().getNearestNotDone(profile.id, Date.getToday(), 4).observe(activity, Observer { events ->
             adapter.items = events
             if (b.eventsView.adapter == null) {
                 b.eventsView.adapter = adapter

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/HomeworkFragment.kt

@@ -1,3 +1,7 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
 package pl.szczodrzynski.edziennik.ui.modules.homework
 
 import android.os.AsyncTask
@@ -7,46 +11,48 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.Toast
 import androidx.fragment.app.Fragment
-import androidx.viewpager.widget.ViewPager
 import com.mikepenz.iconics.typeface.library.community.material.CommunityMaterial
 import com.mikepenz.iconics.typeface.library.szkolny.font.SzkolnyFont
-import pl.szczodrzynski.edziennik.App
-import pl.szczodrzynski.edziennik.MainActivity
-import pl.szczodrzynski.edziennik.R
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import pl.szczodrzynski.edziennik.*
 import pl.szczodrzynski.edziennik.data.db.entity.Event
 import pl.szczodrzynski.edziennik.data.db.entity.Metadata
-import pl.szczodrzynski.edziennik.databinding.FragmentHomeworkBinding
+import pl.szczodrzynski.edziennik.databinding.HomeworkFragmentBinding
 import pl.szczodrzynski.edziennik.ui.dialogs.event.EventManualDialog
-import pl.szczodrzynski.edziennik.ui.modules.messages.MessagesFragment
-import pl.szczodrzynski.edziennik.utils.Themes
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.FragmentLazyPagerAdapter
 import pl.szczodrzynski.navlib.bottomsheet.items.BottomSheetPrimaryItem
 import pl.szczodrzynski.navlib.bottomsheet.items.BottomSheetSeparatorItem
+import kotlin.coroutines.CoroutineContext
 
-class HomeworkFragment : Fragment() {
+class HomeworkFragment : Fragment(), CoroutineScope {
     companion object {
+        private const val TAG = "HomeworkFragment"
         var pageSelection = 0
     }
 
     private lateinit var app: App
     private lateinit var activity: MainActivity
-    private lateinit var b: FragmentHomeworkBinding
+    private lateinit var b: HomeworkFragmentBinding
+
+    private val job: Job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
+    // local/private variables go here
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         activity = (getActivity() as MainActivity?) ?: return null
-        if (context == null)
-            return null
+        context ?: return null
         app = activity.application as App
-        context!!.theme.applyStyle(Themes.appTheme, true)
-        // activity, context and profile is valid
-        b = FragmentHomeworkBinding.inflate(inflater)
+        b = HomeworkFragmentBinding.inflate(inflater)
         b.refreshLayout.setParent(activity.swipeRefreshLayout)
         return b.root
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        // TODO check if app, activity, b can be null
-        if (app.profile == null || !isAdded)
-            return
+        if (!isAdded) return
 
         activity.bottomSheet.prependItems(
                 BottomSheetPrimaryItem(true)
@@ -67,34 +73,29 @@ class HomeworkFragment : Fragment() {
                     Toast.makeText(activity, R.string.main_menu_mark_as_read_success, Toast.LENGTH_SHORT).show()
                 }))
 
-        b.viewPager.adapter = MessagesFragment.Adapter(childFragmentManager).also { adapter ->
-            adapter.addFragment(HomeworkListFragment().also { fragment ->
-                fragment.arguments = Bundle().also {  args ->
-                    args.putInt("homeworkDate", HomeworkDate.CURRENT)
-                }
-            }, getString(R.string.homework_tab_current))
+        val pagerAdapter = FragmentLazyPagerAdapter(
+                fragmentManager ?: return,
+                b.refreshLayout,
+                listOf(
+                        HomeworkListFragment().apply {
+                            arguments = Bundle("homeworkDate" to HomeworkDate.CURRENT)
+                        } to getString(R.string.homework_tab_current),
 
-            adapter.addFragment(HomeworkListFragment().also { fragment ->
-                fragment.arguments = Bundle().also {  args ->
-                    args.putInt("homeworkDate", HomeworkDate.PAST)
-                }
-            }, getString(R.string.homework_tab_past))
+                        HomeworkListFragment().apply {
+                            arguments = Bundle("homeworkDate" to HomeworkDate.PAST)
+                        } to getString(R.string.homework_tab_past)
+                )
+        )
+        b.viewPager.apply {
+            offscreenPageLimit = 1
+            adapter = pagerAdapter
+            currentItem = pageSelection
+            addOnPageSelectedListener {
+                pageSelection = it
+            }
+            b.tabLayout.setupWithViewPager(this)
         }
 
-        b.viewPager.currentItem = pageSelection
-        b.viewPager.clearOnPageChangeListeners()
-        b.viewPager.addOnPageChangeListener(object : ViewPager.OnPageChangeListener {
-            override fun onPageScrollStateChanged(state: Int) {
-                b.refreshLayout.isEnabled = state == ViewPager.SCROLL_STATE_IDLE
-            }
-            override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {}
-            override fun onPageSelected(position: Int) {
-                pageSelection = position
-            }
-        })
-
-        b.tabLayout.setupWithViewPager(b.viewPager)
-
         activity.navView.apply {
             bottomBar.apply {
                 fabEnable = true

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/HomeworkListFragment.kt

@@ -4,67 +4,106 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.fragment.app.Fragment
+import androidx.core.view.isVisible
 import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.LinearLayoutManager
-import pl.szczodrzynski.edziennik.App
-import pl.szczodrzynski.edziennik.MainActivity
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import pl.szczodrzynski.edziennik.*
 import pl.szczodrzynski.edziennik.data.db.entity.Event
-import pl.szczodrzynski.edziennik.databinding.HomeworkListBinding
-import pl.szczodrzynski.edziennik.getInt
+import pl.szczodrzynski.edziennik.databinding.HomeworkListFragmentBinding
+import pl.szczodrzynski.edziennik.ui.dialogs.event.EventDetailsDialog
+import pl.szczodrzynski.edziennik.ui.dialogs.event.EventListAdapter
+import pl.szczodrzynski.edziennik.ui.dialogs.event.EventManualDialog
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyFragment
+import pl.szczodrzynski.edziennik.utils.SimpleDividerItemDecoration
 import pl.szczodrzynski.edziennik.utils.models.Date
+import kotlin.coroutines.CoroutineContext
 
-class HomeworkListFragment : Fragment() {
+class HomeworkListFragment : LazyFragment(), CoroutineScope {
+    companion object {
+        private const val TAG = "HomeworkListFragment"
+    }
 
     private lateinit var app: App
     private lateinit var activity: MainActivity
-    private lateinit var b: HomeworkListBinding
+    private lateinit var b: HomeworkListFragmentBinding
 
-    private var homeworkDate = HomeworkDate.CURRENT
+    private val job: Job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
+    // local/private variables go here
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         activity = (getActivity() as MainActivity?) ?: return null
         context ?: return null
         app = activity.application as App
-        b = HomeworkListBinding.inflate(inflater)
+        b = HomeworkListFragmentBinding.inflate(inflater)
         return b.root
     }
 
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        // TODO check if app, activity, b can be null
-        if (!isAdded)
-            return
-
-        if (arguments != null) {
-            homeworkDate = arguments.getInt("homeworkDate", HomeworkDate.CURRENT)
-        }
-
-        val layoutManager = LinearLayoutManager(context)
-        layoutManager.reverseLayout = homeworkDate == HomeworkDate.PAST
-        layoutManager.stackFromEnd = homeworkDate == HomeworkDate.PAST
-
-        b.homeworkView.setHasFixedSize(true)
-        b.homeworkView.layoutManager = layoutManager
+    override fun onPageCreated(): Boolean { startCoroutineTimer(100L) {
+        val homeworkDate = arguments.getInt("homeworkDate", HomeworkDate.CURRENT)
 
+        val today = Date.getToday()
         val filter = when(homeworkDate) {
-            HomeworkDate.CURRENT -> "eventDate >= '" + Date.getToday().stringY_m_d + "'"
-            else -> "eventDate < '" + Date.getToday().stringY_m_d + "'"
+            HomeworkDate.CURRENT -> "eventDate >= '${today.stringY_m_d}' AND eventIsDone = 0"
+            else -> "eventDate < '${today.stringY_m_d}' OR eventIsDone = 1"
         }
 
-        app.db.eventDao()
-                .getAllByType(App.profileId, Event.TYPE_HOMEWORK, filter)
-                .observe(this, Observer { homeworkList ->
-                    if (!isAdded) return@Observer
+        val adapter = EventListAdapter(
+                activity,
+                showWeekDay = true,
+                showDate = true,
+                showType = false,
+                showTime = true,
+                showSubject = true,
+                onItemClick = {
+                    EventDetailsDialog(
+                            activity,
+                            it
+                    )
+                },
+                onEventEditClick = {
+                    EventManualDialog(
+                            activity,
+                            it.profileId,
+                            editingEvent = it
+                    )
+                }
+        )
 
-                    if (homeworkList != null && homeworkList.size > 0) {
-                        val adapter = HomeworkAdapter(context, homeworkList)
-                        b.homeworkView.adapter = adapter
-                        b.homeworkView.visibility = View.VISIBLE
-                        b.homeworkNoData.visibility = View.GONE
-                    } else {
-                        b.homeworkView.visibility = View.GONE
-                        b.homeworkNoData.visibility = View.VISIBLE
+        app.db.eventDao().getAllByType(App.profileId, Event.TYPE_HOMEWORK, filter).observe(this@HomeworkListFragment, Observer { items ->
+            if (!isAdded) return@Observer
+
+            // load & configure the adapter
+            adapter.items = items
+            if (items.isNotNullNorEmpty() && b.list.adapter == null) {
+                b.list.adapter = adapter
+                b.list.apply {
+                    setHasFixedSize(true)
+                    layoutManager = LinearLayoutManager(context).apply {
+                        reverseLayout = homeworkDate == HomeworkDate.PAST
+                        stackFromEnd = homeworkDate == HomeworkDate.PAST
                     }
-                })
-    }
+                    addItemDecoration(SimpleDividerItemDecoration(context))
+                    addOnScrollListener(onScrollListener)
+                }
+            }
+            adapter.notifyDataSetChanged()
+            setSwipeToRefresh(false) // TODO
+
+            // show/hide relevant views
+            b.progressBar.isVisible = false
+            if (items.isNullOrEmpty()) {
+                b.list.isVisible = false
+                b.noData.isVisible = true
+            } else {
+                b.list.isVisible = true
+                b.noData.isVisible = false
+            }
+        })
+    }; return true }
 }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/MessageFragment.kt

@@ -15,6 +15,7 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.FrameLayout
 import android.widget.ProgressBar
+import androidx.appcompat.widget.PopupMenu
 import androidx.fragment.app.Fragment
 import com.google.android.material.chip.Chip
 import com.mikepenz.iconics.IconicsColor
@@ -62,7 +63,7 @@ class MessageFragment : Fragment(), CoroutineScope {
     private lateinit var activity: MainActivity
     private lateinit var b: MessageFragmentBinding
 
-    private lateinit var job: Job
+    private val job: Job = Job()
     override val coroutineContext: CoroutineContext
         get() = job + Dispatchers.Main
 
@@ -73,16 +74,12 @@ class MessageFragment : Fragment(), CoroutineScope {
         activity = (getActivity() as MainActivity?) ?: return null
         context ?: return null
         app = activity.application as App
-        context!!.theme.applyStyle(Themes.appTheme, true)
         b = MessageFragmentBinding.inflate(inflater)
-        job = Job()
         return b.root
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        // TODO check if app, activity, b can be null
-        if (app.profile == null || !isAdded)
-            return
+        if (!isAdded) return
 
         b.closeButton.setImageDrawable(
                 IconicsDrawable(activity, CommunityMaterial.Icon2.cmd_window_close)
@@ -260,16 +257,35 @@ class MessageFragment : Fragment(), CoroutineScope {
         MessagesFragment.pageSelection = min(message.type, 1)
     }
 
+    private val attachmentOnClick = { v: View ->
+        if (v.tag is Int) {
+            downloadAttachment(v.tag as Int)
+        }
+    }
+
+    private val attachmentOnLongClick = { v: View ->
+        (v.tag as? Int)?.let { tag ->
+            val popupMenu = PopupMenu(v.context, v)
+            popupMenu.menu.add(0, tag, 0, R.string.messages_attachment_download_again)
+            popupMenu.setOnMenuItemClickListener {
+                downloadAttachment(it.itemId, forceDownload = true)
+                true
+            }
+            popupMenu.show()
+        }
+        true
+    }
+
     private fun showAttachments() {
         if (message.attachmentIds != null) {
             val insertPoint = b.attachments
             insertPoint.removeAllViews()
 
             val chipLayoutParams = FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
-            chipLayoutParams.setMargins(0, Utils.dpToPx(8), 0, Utils.dpToPx(8))
+            chipLayoutParams.setMargins(0, 8.dp, 0, 0)
 
-            val progressLayoutParams = FrameLayout.LayoutParams(Utils.dpToPx(18), Utils.dpToPx(18))
-            progressLayoutParams.setMargins(Utils.dpToPx(8), 0, Utils.dpToPx(8), 0)
+            val progressLayoutParams = FrameLayout.LayoutParams(18.dp, 18.dp)
+            progressLayoutParams.setMargins(8.dp, 0, 8.dp, 0)
             progressLayoutParams.gravity = END or CENTER_VERTICAL
 
             // CREATE VIEWS AND AN OBJECT FOR EVERY ATTACHMENT
@@ -280,12 +296,13 @@ class MessageFragment : Fragment(), CoroutineScope {
                 val size = message.attachmentSizes[index]
                 // create the parent
                 val attachmentLayout = FrameLayout(b.root.context)
-                attachmentLayout.setPadding(Utils.dpToPx(16), 0, Utils.dpToPx(16), 0)
+                attachmentLayout.setPadding(16.dp, 0, 16.dp, 0)
 
                 val attachmentChip = Chip(attachmentLayout.context)
                 //attachmentChip.setChipBackgroundColorResource(ThemeUtils.getChipColorRes());
                 attachmentChip.layoutParams = chipLayoutParams
-                attachmentChip.height = Utils.dpToPx(40)
+                attachmentChip.chipMinHeight = 40.dp.toFloat()
+                //attachmentChip.height = Utils.dpToPx(40)
 
                 // show the file size or not
                 if (size == -1L)
@@ -312,11 +329,8 @@ class MessageFragment : Fragment(), CoroutineScope {
                 attachmentChip.isCloseIconVisible = false
                 // set the object's index in the attachmentList as the tag
                 attachmentChip.tag = index
-                attachmentChip.setOnClickListener { v ->
-                    if (v.tag is Int) {
-                        downloadAttachment(v.tag as Int)
-                    }
-                }
+                attachmentChip.onClick(attachmentOnClick)
+                attachmentChip.onLongClick(attachmentOnLongClick)
                 attachmentLayout.addView(attachmentChip)
 
                 val attachmentProgress = ProgressBar(attachmentLayout.context)
@@ -338,10 +352,10 @@ class MessageFragment : Fragment(), CoroutineScope {
         }
     }
 
-    private fun downloadAttachment(index: Int) {
+    private fun downloadAttachment(index: Int, forceDownload: Boolean = false) {
         val attachment = attachmentList[index]
 
-        if (attachment.downloaded != null) {
+        if (!forceDownload && attachment.downloaded != null) {
             Utils.openFile(activity, File(attachment.downloaded))
             return
         }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/MessagesFragment.kt

@@ -6,7 +6,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
-import androidx.fragment.app.FragmentPagerAdapter
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
 import androidx.viewpager.widget.ViewPager
 import com.mikepenz.iconics.typeface.library.community.material.CommunityMaterial
 import pl.szczodrzynski.edziennik.App
@@ -14,8 +14,9 @@ import pl.szczodrzynski.edziennik.MainActivity
 import pl.szczodrzynski.edziennik.R
 import pl.szczodrzynski.edziennik.data.db.entity.Message
 import pl.szczodrzynski.edziennik.databinding.FragmentMessagesBinding
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyFragment
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyPagerAdapter
 import pl.szczodrzynski.edziennik.utils.Themes
-import java.util.*
 
 class MessagesFragment : Fragment() {
     companion object {
@@ -54,7 +55,7 @@ class MessagesFragment : Fragment() {
             return
         }
 
-        b.viewPager.adapter = Adapter(childFragmentManager).also { adapter ->
+        b.viewPager.adapter = Adapter(childFragmentManager, b.refreshLayout).also { adapter ->
 
             adapter.addFragment(MessagesListFragment().also { fragment ->
                 fragment.arguments = Bundle().also { args ->
@@ -71,13 +72,8 @@ class MessagesFragment : Fragment() {
         }
 
         b.viewPager.currentItem = pageSelection
-        b.viewPager.clearOnPageChangeListeners()
         b.viewPager.addOnPageChangeListener(object : ViewPager.OnPageChangeListener {
-            override fun onPageScrollStateChanged(state: Int) {
-                if (b.refreshLayout != null) {
-                    b.refreshLayout.isEnabled = state == ViewPager.SCROLL_STATE_IDLE
-                }
-            }
+            override fun onPageScrollStateChanged(state: Int) {}
             override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {}
             override fun onPageSelected(position: Int) {
                 pageSelection = position
@@ -126,11 +122,11 @@ class MessagesFragment : Fragment() {
         }*/
     }
 
-    internal class Adapter(manager: FragmentManager) : FragmentPagerAdapter(manager) {
-        private val mFragmentList = ArrayList<Fragment>()
-        private val mFragmentTitleList = ArrayList<String>()
+    internal class Adapter(manager: FragmentManager, swipeRefreshLayout: SwipeRefreshLayout) : LazyPagerAdapter(manager, swipeRefreshLayout) {
+        private val mFragmentList = mutableListOf<LazyFragment>()
+        private val mFragmentTitleList = mutableListOf<String>()
 
-        override fun getItem(position: Int): Fragment {
+        override fun getPage(position: Int): LazyFragment {
             return mFragmentList[position]
         }
 
@@ -138,12 +134,12 @@ class MessagesFragment : Fragment() {
             return mFragmentList.size
         }
 
-        fun addFragment(fragment: Fragment, title: String) {
+        fun addFragment(fragment: LazyFragment, title: String) {
             mFragmentList.add(fragment)
             mFragmentTitleList.add(title)
         }
 
-        override fun getPageTitle(position: Int): CharSequence? {
+        override fun getPageTitle(position: Int): CharSequence {
             return mFragmentTitleList[position]
         }
     }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/messages/MessagesListFragment.java

@@ -10,11 +10,10 @@ import android.view.ViewGroup;
 import android.view.animation.Interpolator;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 import androidx.databinding.DataBindingUtil;
-import androidx.fragment.app.Fragment;
 import androidx.interpolator.view.animation.FastOutSlowInInterpolator;
 import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -26,13 +25,15 @@ import pl.szczodrzynski.edziennik.data.db.entity.Message;
 import pl.szczodrzynski.edziennik.data.db.full.MessageFull;
 import pl.szczodrzynski.edziennik.data.db.full.MessageRecipientFull;
 import pl.szczodrzynski.edziennik.databinding.MessagesListBinding;
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyFragment;
 import pl.szczodrzynski.edziennik.utils.SimpleDividerItemDecoration;
 import pl.szczodrzynski.edziennik.utils.Themes;
 
 import static androidx.recyclerview.widget.RecyclerView.NO_POSITION;
+import static androidx.recyclerview.widget.RecyclerView.SCROLL_STATE_IDLE;
 import static pl.szczodrzynski.edziennik.utils.Utils.d;
 
-public class MessagesListFragment extends Fragment {
+public class MessagesListFragment extends LazyFragment {
 
     private App app = null;
     private MainActivity activity = null;
@@ -65,9 +66,9 @@ public class MessagesListFragment extends Fragment {
     }
 
     @Override
-    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+    public boolean onPageCreated() {
         if (app == null || activity == null || b == null || !isAdded())
-            return;
+            return false;
 
         long messageId = -1;
         if (getArguments() != null) {
@@ -78,7 +79,7 @@ public class MessagesListFragment extends Fragment {
             args.putLong("messageId", messageId);
             getArguments().remove("messageId");
             activity.loadTarget(MainActivity.TARGET_MESSAGES_DETAILS, args);
-            return;
+            return false;
         }
 
         if (getArguments() != null) {
@@ -161,11 +162,22 @@ public class MessagesListFragment extends Fragment {
          // TODO ANIMATION
         //postponeEnterTransition();
 
-        viewParent = (ViewGroup) view.getParent();
+        viewParent = (ViewGroup) getView().getParent();
 
-        b.emailList.setLayoutManager(new LinearLayoutManager(view.getContext()));
-        b.emailList.addItemDecoration(new SimpleDividerItemDecoration(view.getContext()));
+        b.emailList.setLayoutManager(new LinearLayoutManager(getView().getContext()));
+        b.emailList.addItemDecoration(new SimpleDividerItemDecoration(getView().getContext()));
         b.emailList.setAdapter(messagesAdapter);
+        b.emailList.addOnScrollListener(new RecyclerView.OnScrollListener() {
+            @Override
+            public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
+                if (b.emailList.canScrollVertically(-1)) {
+                    setSwipeToRefresh(false);
+                }
+                if (!b.emailList.canScrollVertically(-1) && newState == SCROLL_STATE_IDLE) {
+                    setSwipeToRefresh(true);
+                }
+            }
+        });
 
         if (messageType == Message.TYPE_RECEIVED) {
             App.db.messageDao().getReceived(App.Companion.getProfileId()).observe(this, messageFulls -> {
@@ -215,7 +227,7 @@ public class MessagesListFragment extends Fragment {
             });
         }
 
-
+        return true;
     }
 
     private void createMessageList(List<MessageFull> messageFulls) {

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/notifications/NotificationsAdapter.kt

@@ -1,71 +1,62 @@
 package pl.szczodrzynski.edziennik.ui.modules.notifications
 
-import android.app.Activity
-import android.content.Context
-import android.content.Intent
 import android.view.LayoutInflater
-import android.view.View
 import android.view.ViewGroup
-import android.widget.TextView
-import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
 import androidx.recyclerview.widget.RecyclerView
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import pl.szczodrzynski.edziennik.*
 import pl.szczodrzynski.edziennik.data.db.entity.Notification
-import pl.szczodrzynski.edziennik.utils.Utils.d
+import pl.szczodrzynski.edziennik.databinding.NotificationsListItemBinding
 import pl.szczodrzynski.edziennik.utils.models.Date
+import kotlin.coroutines.CoroutineContext
 
 class NotificationsAdapter(
-        private val context: Context
-) : RecyclerView.Adapter<NotificationsAdapter.ViewHolder>() {
+        private val activity: AppCompatActivity,
+        val onItemClick: ((item: Notification) -> Unit)? = null
+) : RecyclerView.Adapter<NotificationsAdapter.ViewHolder>(), CoroutineScope {
     companion object {
         private const val TAG = "NotificationsAdapter"
     }
 
+    private val app = activity.applicationContext as App
+    // optional: place the manager here
+
+    private val job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
     var items = listOf<Notification>()
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
-        val inflater = LayoutInflater.from(context)
-        val view = inflater.inflate(R.layout.row_notifications_item, parent, false)
+        val inflater = LayoutInflater.from(activity)
+        val view = NotificationsListItemBinding.inflate(inflater, parent, false)
         return ViewHolder(view)
     }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
-        val app = context.applicationContext as App
+        val item = items[position]
+        val b = holder.b
 
-        val notification = items[position]
+        val date = Date.fromMillis(item.addedDate).formattedString
+        val colorSecondary = android.R.attr.textColorSecondary.resolveAttr(activity)
 
-        val date = Date.fromMillis(notification.addedDate).formattedString
-        val colorSecondary = android.R.attr.textColorSecondary.resolveAttr(context)
-
-        holder.title.text = notification.text
-        holder.profileDate.text = listOf(
-                notification.profileName ?: "",
+        b.title.text = item.text
+        b.profileDate.text = listOf(
+                item.profileName ?: "",
                 " • ",
-                date.asColoredSpannable(colorSecondary)
-        ).concat()
-        holder.type.text = context.getNotificationTitle(notification.type)
+                date
+        ).concat().asColoredSpannable(colorSecondary)
+        b.type.text = activity.getNotificationTitle(item.type)
 
-        holder.root.onClick {
-            val intent = Intent("android.intent.action.MAIN")
-            notification.fillIntent(intent)
-
-            d(TAG, "notification with item " + notification.viewId + " extras " + if (intent.extras == null) "null" else intent.extras!!.toString())
-
-            //Log.d(TAG, "Got date "+intent.getLongExtra("timetableDate", 0));
-
-            if (notification.profileId != null && notification.profileId != -1 && notification.profileId != app.profile.id && context is Activity) {
-                Toast.makeText(app, app.getString(R.string.toast_changing_profile), Toast.LENGTH_LONG).show()
-            }
-            app.sendBroadcast(intent)
+        onItemClick?.let { listener ->
+            b.root.onClick { listener(item) }
         }
     }
 
     override fun getItemCount() = items.size
 
-    class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
-        var root = itemView
-        var title: TextView = itemView.findViewById(R.id.title)
-        var profileDate: TextView = itemView.findViewById(R.id.profileDate)
-        var type: TextView = itemView.findViewById(R.id.type)
-    }
+    class ViewHolder(val b: NotificationsListItemBinding) : RecyclerView.ViewHolder(b.root)
 }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/notifications/NotificationsFragment.kt

@@ -1,87 +0,0 @@
-/*
- * Copyright (c) Kuba Szczodrzyński 2019-11-22.
- */
-
-package pl.szczodrzynski.edziennik.ui.modules.notifications
-
-import android.os.AsyncTask
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.widget.Toast
-import androidx.fragment.app.Fragment
-import androidx.lifecycle.Observer
-import androidx.recyclerview.widget.LinearLayoutManager
-import com.mikepenz.iconics.typeface.library.community.material.CommunityMaterial
-import pl.szczodrzynski.edziennik.App
-import pl.szczodrzynski.edziennik.MainActivity
-import pl.szczodrzynski.edziennik.R
-import pl.szczodrzynski.edziennik.databinding.FragmentNotificationsBinding
-import pl.szczodrzynski.edziennik.utils.SimpleDividerItemDecoration
-import pl.szczodrzynski.edziennik.utils.Themes
-import pl.szczodrzynski.navlib.bottomsheet.items.BottomSheetPrimaryItem
-
-
-class NotificationsFragment : Fragment() {
-    private lateinit var app: App
-    private lateinit var activity: MainActivity
-    private lateinit var b: FragmentNotificationsBinding
-
-    private val adapter by lazy {
-        NotificationsAdapter(activity)
-    }
-
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        activity = (getActivity() as MainActivity?) ?: return null
-        context ?: return null
-        app = activity.application as App
-        context!!.theme.applyStyle(Themes.appTheme, true)
-        if (app.profile == null)
-            return inflater.inflate(R.layout.fragment_loading, container, false)
-        // activity, context and profile is valid
-        b = FragmentNotificationsBinding.inflate(inflater)
-        return b.root
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        // TODO check if app, activity, b can be null
-        if (app.profile == null || !isAdded)
-            return
-
-        activity.bottomSheet.prependItems(
-                BottomSheetPrimaryItem(true)
-                        .withTitle(R.string.menu_remove_notifications)
-                        .withIcon(CommunityMaterial.Icon.cmd_delete_sweep_outline)
-                        .withOnClickListener(View.OnClickListener {
-                            activity.bottomSheet.close()
-                            AsyncTask.execute { app.db.notificationDao().clearAll() }
-                            Toast.makeText(activity, R.string.menu_remove_notifications_success, Toast.LENGTH_SHORT).show()
-                        }))
-
-        app.db.notificationDao()
-                .getAll()
-                .observe(this, Observer { notifications ->
-                    if (app.profile == null || !isAdded) return@Observer
-
-                    adapter.items = notifications
-                    if (b.notificationsView.adapter == null) {
-                        b.notificationsView.adapter = adapter
-                        b.notificationsView.apply {
-                            setHasFixedSize(true)
-                            layoutManager = LinearLayoutManager(context)
-                            addItemDecoration(SimpleDividerItemDecoration(context))
-                        }
-                    }
-                    adapter.notifyDataSetChanged()
-
-                    if (notifications != null && notifications.isNotEmpty()) {
-                        b.notificationsView.visibility = View.VISIBLE
-                        b.notificationsNoData.visibility = View.GONE
-                    } else {
-                        b.notificationsView.visibility = View.GONE
-                        b.notificationsNoData.visibility = View.VISIBLE
-                    }
-                })
-    }
-}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/notifications/NotificationsListFragment.kt

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2019-11-22.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.notifications
+
+import android.app.Activity
+import android.content.Intent
+import android.os.AsyncTask
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Toast
+import androidx.core.view.isVisible
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.Observer
+import androidx.recyclerview.widget.LinearLayoutManager
+import com.mikepenz.iconics.typeface.library.community.material.CommunityMaterial
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import pl.szczodrzynski.edziennik.*
+import pl.szczodrzynski.edziennik.databinding.NotificationsListFragmentBinding
+import pl.szczodrzynski.edziennik.utils.SimpleDividerItemDecoration
+import pl.szczodrzynski.edziennik.utils.Utils
+import pl.szczodrzynski.navlib.bottomsheet.items.BottomSheetPrimaryItem
+import kotlin.coroutines.CoroutineContext
+
+class NotificationsListFragment : Fragment(), CoroutineScope {
+    companion object {
+        private const val TAG = "NotificationsListFragment"
+    }
+
+    private lateinit var app: App
+    private lateinit var activity: MainActivity
+    private lateinit var b: NotificationsListFragmentBinding
+
+    private val job: Job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        activity = (getActivity() as MainActivity?) ?: return null
+        context ?: return null
+        app = activity.application as App
+        b = NotificationsListFragmentBinding.inflate(inflater)
+        return b.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) { startCoroutineTimer(100L) {
+        if (!isAdded) return@startCoroutineTimer
+
+        activity.bottomSheet.prependItems(
+                BottomSheetPrimaryItem(true)
+                        .withTitle(R.string.menu_remove_notifications)
+                        .withIcon(CommunityMaterial.Icon.cmd_delete_sweep_outline)
+                        .withOnClickListener(View.OnClickListener {
+                            activity.bottomSheet.close()
+                            AsyncTask.execute { app.db.notificationDao().clearAll() }
+                            Toast.makeText(activity, R.string.menu_remove_notifications_success, Toast.LENGTH_SHORT).show()
+                        }))
+
+        val adapter = NotificationsAdapter(activity) { notification ->
+            val intent = Intent("android.intent.action.MAIN")
+            notification.fillIntent(intent)
+
+            Utils.d(TAG, "notification with item " + notification.viewId + " extras " + if (intent.extras == null) "null" else intent.extras!!.toString())
+            if (notification.profileId != null && notification.profileId != -1 && notification.profileId != app.profile.id && context is Activity) {
+                Toast.makeText(app, app.getString(R.string.toast_changing_profile), Toast.LENGTH_LONG).show()
+            }
+            app.sendBroadcast(intent)
+        }
+
+        app.db.notificationDao().getAll().observe(this, Observer { items ->
+            if (!isAdded) return@Observer
+
+            // load & configure the adapter
+            adapter.items = items
+            if (items.isNotNullNorEmpty() && b.list.adapter == null) {
+                b.list.adapter = adapter
+                b.list.apply {
+                    setHasFixedSize(true)
+                    layoutManager = LinearLayoutManager(context)
+                    addItemDecoration(SimpleDividerItemDecoration(context))
+                }
+            }
+            adapter.notifyDataSetChanged()
+
+            // show/hide relevant views
+            b.progressBar.isVisible = false
+            if (items.isNullOrEmpty()) {
+                b.list.isVisible = false
+                b.noData.isVisible = true
+            } else {
+                b.list.isVisible = true
+                b.noData.isVisible = false
+            }
+        })
+    }}
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/template/TemplateAdapter.kt

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.template
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.appcompat.app.AppCompatActivity
+import androidx.recyclerview.widget.RecyclerView
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import pl.szczodrzynski.edziennik.*
+import pl.szczodrzynski.edziennik.data.db.entity.Notification
+import pl.szczodrzynski.edziennik.databinding.TemplateListItemBinding
+import pl.szczodrzynski.edziennik.utils.models.Date
+import kotlin.coroutines.CoroutineContext
+
+class TemplateAdapter(
+        val activity: AppCompatActivity,
+        val onItemClick: ((item: Notification) -> Unit)? = null
+) : RecyclerView.Adapter<TemplateAdapter.ViewHolder>(), CoroutineScope {
+    companion object {
+        private const val TAG = "TemplateAdapter"
+    }
+
+    private val app = activity.applicationContext as App
+    // optional: place the manager here
+
+    private val job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
+    var items = listOf<Notification>()
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        val view = TemplateListItemBinding.inflate(inflater, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val item = items[position]
+        val b = holder.b
+
+        val date = Date.fromMillis(item.addedDate).formattedString
+        val colorSecondary = android.R.attr.textColorSecondary.resolveAttr(activity)
+
+        b.title.text = item.text
+        b.profileDate.text = listOf(
+                item.profileName ?: "",
+                " • ",
+                date
+        ).concat().asColoredSpannable(colorSecondary)
+        b.type.text = activity.getNotificationTitle(item.type)
+
+        onItemClick?.let { listener ->
+            b.root.onClick { listener(item) }
+        }
+    }
+
+    override fun getItemCount() = items.size
+
+    class ViewHolder(val b: TemplateListItemBinding) : RecyclerView.ViewHolder(b.root)
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/template/TemplateDialog.kt

@@ -1,8 +1,8 @@
 /*
- * Copyright (c) Kuba Szczodrzyński 2020-1-8.
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
  */
 
-package pl.szczodrzynski.edziennik.ui.dialogs
+package pl.szczodrzynski.edziennik.ui.modules.template
 
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/template/TemplateFragment.kt

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.template
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.MainActivity
+import pl.szczodrzynski.edziennik.addOnPageSelectedListener
+import pl.szczodrzynski.edziennik.databinding.TemplateFragmentBinding
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.FragmentLazyPagerAdapter
+import pl.szczodrzynski.edziennik.ui.modules.homework.HomeworkFragment
+import kotlin.coroutines.CoroutineContext
+
+class TemplateFragment : Fragment(), CoroutineScope {
+    companion object {
+        private const val TAG = "TemplateFragment"
+        var pageSelection = 0
+    }
+
+    private lateinit var app: App
+    private lateinit var activity: MainActivity
+    private lateinit var b: TemplateFragmentBinding
+
+    private val job: Job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
+    // local/private variables go here
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        activity = (getActivity() as MainActivity?) ?: return null
+        context ?: return null
+        app = activity.application as App
+        b = TemplateFragmentBinding.inflate(inflater)
+        b.refreshLayout.setParent(activity.swipeRefreshLayout)
+        return b.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        if (!isAdded) return
+
+        val pagerAdapter = FragmentLazyPagerAdapter(
+                fragmentManager ?: return,
+                b.refreshLayout,
+                listOf(
+                        TemplatePageFragment() to "Pager 0",
+                        TemplatePageFragment() to "Pager 1",
+                        TemplatePageFragment() to "Pager 2",
+                        TemplatePageFragment() to "Pager 3",
+                        TemplateListPageFragment() to "Pager 4",
+                        TemplateListPageFragment() to "Pager 5",
+                        TemplateListPageFragment() to "Pager 6",
+                        TemplateListPageFragment() to "Pager 7"
+                )
+        )
+        b.viewPager.apply {
+            offscreenPageLimit = 1
+            adapter = pagerAdapter
+            currentItem = pageSelection
+            addOnPageSelectedListener {
+                HomeworkFragment.pageSelection = it
+            }
+            b.tabLayout.setupWithViewPager(this)
+        }
+    }
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/template/TemplateListFragment.kt

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.template
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.view.isVisible
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.Observer
+import androidx.recyclerview.widget.LinearLayoutManager
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import pl.szczodrzynski.edziennik.*
+import pl.szczodrzynski.edziennik.databinding.TemplateListFragmentBinding
+import pl.szczodrzynski.edziennik.utils.SimpleDividerItemDecoration
+import kotlin.coroutines.CoroutineContext
+
+class TemplateListFragment : Fragment(), CoroutineScope {
+    companion object {
+        private const val TAG = "TemplateListFragment"
+    }
+
+    private lateinit var app: App
+    private lateinit var activity: MainActivity
+    private lateinit var b: TemplateListFragmentBinding
+
+    private val job: Job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
+    // local/private variables go here
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        activity = (getActivity() as MainActivity?) ?: return null
+        context ?: return null
+        app = activity.application as App
+        b = TemplateListFragmentBinding.inflate(inflater)
+        b.refreshLayout.setParent(activity.swipeRefreshLayout)
+        return b.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) { startCoroutineTimer(100L) {
+        if (!isAdded) return@startCoroutineTimer
+
+        val adapter = TemplateAdapter(activity)
+
+        app.db.notificationDao().getAll().observe(this, Observer { items ->
+            if (!isAdded) return@Observer
+
+            // load & configure the adapter
+            adapter.items = items
+            if (items.isNotNullNorEmpty() && b.list.adapter == null) {
+                b.list.adapter = adapter
+                b.list.apply {
+                    setHasFixedSize(true)
+                    layoutManager = LinearLayoutManager(context)
+                    addItemDecoration(SimpleDividerItemDecoration(context))
+                    addOnScrollListener(b.refreshLayout.onScrollListener)
+                }
+            }
+            adapter.notifyDataSetChanged()
+            b.refreshLayout.isEnabled = false // TODO
+
+            // show/hide relevant views
+            b.progressBar.isVisible = false
+            if (items.isNullOrEmpty()) {
+                b.list.isVisible = false
+                b.noData.isVisible = true
+            } else {
+                b.list.isVisible = true
+                b.noData.isVisible = false
+            }
+        })
+    }}
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/template/TemplateListPageFragment.kt

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.template
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.view.isVisible
+import androidx.lifecycle.Observer
+import androidx.recyclerview.widget.LinearLayoutManager
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.MainActivity
+import pl.szczodrzynski.edziennik.databinding.TemplateListPageFragmentBinding
+import pl.szczodrzynski.edziennik.isNotNullNorEmpty
+import pl.szczodrzynski.edziennik.startCoroutineTimer
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyFragment
+import pl.szczodrzynski.edziennik.utils.SimpleDividerItemDecoration
+import kotlin.coroutines.CoroutineContext
+
+class TemplateListPageFragment : LazyFragment(), CoroutineScope {
+    companion object {
+        private const val TAG = "TemplateListPagerFragment"
+    }
+
+    private lateinit var app: App
+    private lateinit var activity: MainActivity
+    private lateinit var b: TemplateListPageFragmentBinding
+
+    private val job: Job = Job()
+    override val coroutineContext: CoroutineContext
+        get() = job + Dispatchers.Main
+
+    // local/private variables go here
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        activity = (getActivity() as MainActivity?) ?: return null
+        context ?: return null
+        app = activity.application as App
+        b = TemplateListPageFragmentBinding.inflate(inflater)
+        return b.root
+    }
+
+    override fun onPageCreated(): Boolean { startCoroutineTimer(100L) {
+        val adapter = TemplateAdapter(activity)
+
+        app.db.notificationDao().getAll().observe(this, Observer { items ->
+            if (!isAdded) return@Observer
+
+            // load & configure the adapter
+            adapter.items = items
+            if (items.isNotNullNorEmpty() && b.list.adapter == null) {
+                b.list.adapter = adapter
+                b.list.apply {
+                    setHasFixedSize(true)
+                    layoutManager = LinearLayoutManager(context)
+                    addItemDecoration(SimpleDividerItemDecoration(context))
+                    addOnScrollListener(onScrollListener)
+                }
+            }
+            adapter.notifyDataSetChanged()
+            setSwipeToRefresh(false) // TODO
+
+            // show/hide relevant views
+            b.progressBar.isVisible = false
+            if (items.isNullOrEmpty()) {
+                b.list.isVisible = false
+                b.noData.isVisible = true
+            } else {
+                b.list.isVisible = true
+                b.noData.isVisible = false
+            }
+        })
+    }; return true }
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/template/TemplatePageFragment.kt

@@ -1,26 +1,30 @@
-package pl.szczodrzynski.edziennik.ui.modules.base
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.template
 
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.fragment.app.Fragment
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import pl.szczodrzynski.edziennik.App
 import pl.szczodrzynski.edziennik.MainActivity
-import pl.szczodrzynski.edziennik.databinding.FragmentTemplateBinding
+import pl.szczodrzynski.edziennik.databinding.TemplatePageFragmentBinding
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyFragment
 import kotlin.coroutines.CoroutineContext
 
-class TemplateFragment : Fragment(), CoroutineScope {
+class TemplatePageFragment : LazyFragment(), CoroutineScope {
     companion object {
-        private const val TAG = "TemplateFragment"
+        private const val TAG = "TemplatePagerFragment"
     }
 
     private lateinit var app: App
     private lateinit var activity: MainActivity
-    private lateinit var b: FragmentTemplateBinding
+    private lateinit var b: TemplatePageFragmentBinding
 
     private val job: Job = Job()
     override val coroutineContext: CoroutineContext
@@ -32,15 +36,16 @@ class TemplateFragment : Fragment(), CoroutineScope {
         activity = (getActivity() as MainActivity?) ?: return null
         context ?: return null
         app = activity.application as App
-        b = FragmentTemplateBinding.inflate(inflater)
-        b.refreshLayout.setParent(activity.swipeRefreshLayout)
+        b = TemplatePageFragmentBinding.inflate(inflater)
         return b.root
     }
 
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        if (!isAdded)
-            return
-
+    override fun onPageCreated(): Boolean {
+        b.text.text = "Fragment $position"
 
+        b.button.addOnCheckedChangeListener { button, isChecked ->
+            setSwipeToRefresh(isChecked)
+        }
+        return true
     }
 }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/template/TemplatePagerAdapter.kt

@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-30.
+ */
+
+package pl.szczodrzynski.edziennik.ui.modules.template
+
+import androidx.fragment.app.FragmentManager
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyPagerAdapter
+
+class TemplatePagerAdapter(fragmentManager: FragmentManager, swipeRefreshLayout: SwipeRefreshLayout) : LazyPagerAdapter(fragmentManager, swipeRefreshLayout) {
+    override fun getPage(position: Int) = TemplatePageFragment()
+    override fun getPageTitle(position: Int) = "Page $position"
+    override fun getCount() = 10
+}

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/timetable/TimetableDayFragment.kt

@@ -27,7 +27,7 @@ import pl.szczodrzynski.edziennik.data.db.full.LessonFull
 import pl.szczodrzynski.edziennik.databinding.TimetableLessonBinding
 import pl.szczodrzynski.edziennik.databinding.TimetableNoTimetableBinding
 import pl.szczodrzynski.edziennik.ui.dialogs.timetable.LessonDetailsDialog
-import pl.szczodrzynski.edziennik.ui.modules.base.PagerFragment
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyFragment
 import pl.szczodrzynski.edziennik.ui.modules.timetable.TimetableFragment.Companion.DEFAULT_END_HOUR
 import pl.szczodrzynski.edziennik.ui.modules.timetable.TimetableFragment.Companion.DEFAULT_START_HOUR
 import pl.szczodrzynski.edziennik.utils.ListenerScrollView
@@ -36,7 +36,7 @@ import java.util.*
 import kotlin.coroutines.CoroutineContext
 import kotlin.math.min
 
-class TimetableDayFragment : PagerFragment(), CoroutineScope {
+class TimetableDayFragment : LazyFragment(), CoroutineScope {
     companion object {
         private const val TAG = "TimetableDayFragment"
     }
@@ -104,9 +104,6 @@ class TimetableDayFragment : PagerFragment(), CoroutineScope {
     }
 
     override fun onPageCreated(): Boolean {
-        if (!isAdded)
-            return false
-
         // observe lesson database
         app.db.timetableDao().getForDate(App.profileId, date).observe(this, Observer { lessons ->
             launch {

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/timetable/TimetablePagerAdapter.kt

@@ -5,9 +5,9 @@
 package pl.szczodrzynski.edziennik.ui.modules.timetable
 
 import android.os.Bundle
-import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
-import androidx.fragment.app.FragmentStatePagerAdapter
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyFragment
+import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyPagerAdapter
 import pl.szczodrzynski.edziennik.utils.models.Date
 import pl.szczodrzynski.edziennik.utils.models.Week
 
@@ -16,7 +16,7 @@ class TimetablePagerAdapter(
         private val items: List<Date>,
         private val startHour: Int,
         private val endHour: Int
-) : FragmentStatePagerAdapter(fragmentManager, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
+) : LazyPagerAdapter(fragmentManager, null) {
     companion object {
         private const val TAG = "TimetablePagerAdapter"
     }
@@ -25,7 +25,7 @@ class TimetablePagerAdapter(
     private val weekStart by lazy { today.weekStart }
     private val weekEnd by lazy { weekStart.clone().stepForward(0, 0, 6) }
 
-    override fun getItem(position: Int): Fragment {
+    override fun getPage(position: Int): LazyFragment {
         return TimetableDayFragment().apply {
             arguments = Bundle().apply {
                 putInt("date", items[position].value)
@@ -39,7 +39,7 @@ class TimetablePagerAdapter(
         return items.size
     }
 
-    override fun getPageTitle(position: Int): CharSequence? {
+    override fun getPageTitle(position: Int): CharSequence {
         val date = items[position]
         val pageTitle = StringBuilder(Week.getFullDayName(date.weekDay))
         if (date > weekEnd || date < weekStart) {

app/src/main/java/pl/szczodrzynski/edziennik/utils/models/Date.java

@@ -137,7 +137,7 @@ public class Date implements Comparable<Date> {
     }
 
     public static int diffDays(Date d1, Date d2) {
-        return (int) ((d1.getInMillis() - d2.getInMillis()) / (24 * 60 * 60 * 1000));
+        return Math.round((d1.getInMillis() - d2.getInMillis()) / (24 * 60 * 60 * 1000f));
     }
 
     public static boolean isToday(Date date) {

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

@@ -0,0 +1,34 @@
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2020-3-30.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="128dp"
+    android:height="128dp"
+    android:viewportWidth="128"
+    android:viewportHeight="128">
+  <path
+      android:pathData="m102,24h-74c-4.42,0 -8,3.58 -8,8v72c0,4.42 3.58,8 8,8h74c4.42,0 8,-3.58 8,-8v-72c0,-4.42 -3.58,-8 -8,-8z"
+      android:fillColor="#70d0f3"/>
+  <path
+      android:pathData="m20,32v8h90v-8c0,-4.42 -3.58,-8 -8,-8h-74c-4.42,0 -8,3.58 -8,8z"
+      android:fillColor="#3281e6"/>
+  <path
+      android:pathData="m88,92h-30c-2.21,0 -4,-1.79 -4,-4 0,-2.21 1.79,-4 4,-4h30c2.21,0 4,1.79 4,4 0,2.21 -1.79,4 -4,4zM92,74c0,-2.21 -1.79,-4 -4,-4h-30c-2.21,0 -4,1.79 -4,4 0,2.21 1.79,4 4,4h30c2.21,0 4,-1.79 4,-4zM92,60c0,-2.21 -1.79,-4 -4,-4h-30c-2.21,0 -4,1.79 -4,4 0,2.21 1.79,4 4,4h30c2.21,0 4,-1.79 4,-4zM48,88c0,-2.21 -1.79,-4 -4,-4h-2c-2.21,0 -4,1.79 -4,4 0,2.21 1.79,4 4,4h2c2.21,0 4,-1.79 4,-4zM48,74c0,-2.21 -1.79,-4 -4,-4h-2c-2.21,0 -4,1.79 -4,4 0,2.21 1.79,4 4,4h2c2.21,0 4,-1.79 4,-4zM48,60c0,-2.21 -1.79,-4 -4,-4h-2c-2.21,0 -4,1.79 -4,4 0,2.21 1.79,4 4,4h2c2.21,0 4,-1.79 4,-4z"
+      android:fillColor="#2b83d5"/>
+  <path
+      android:pathData="m127,86.3 l-7.42,-7.42c-1.12,-1.13 -2.96,-1.13 -4.09,0l-3.5,3.49 11.5,11.5 3.49,-3.5c1.13,-1.13 1.13,-2.96 0,-4.09"
+      android:fillColor="#fc657c"/>
+  <path
+      android:pathData="m93.4,124 l-11.5,-11.5 24.5,-24.5 11.5,11.5z"
+      android:fillColor="#ffa859"/>
+  <path
+      android:pathData="m118,99.6 l-11.5,-11.5 5.75,-5.76 11.5,11.5z"
+      android:fillColor="#c8c8c8"/>
+  <path
+      android:pathData="m81.9,113 l-3.88,15.4 15.4,-3.88z"
+      android:fillColor="#ffcd98"/>
+  <path
+      android:pathData="m80,120 l-1.96,7.78 7.78,-1.96z"
+      android:fillColor="#818181"/>
+</vector>

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

@@ -195,6 +195,18 @@
                     android:text="\uFCDA"
                     android:textSize="20sp"
                     android:fontFamily="@font/community_material_font_v3_5_95_1" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/checkDoneButton"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="8dp"
+                    android:minWidth="0dp"
+                    android:checkable="true"
+                    style="@style/Widget.MaterialComponents.Button.OutlinedButton"
+                    android:text="\uFCE1"
+                    android:textSize="20sp"
+                    android:fontFamily="@font/community_material_font_v3_5_95_1" />
             </LinearLayout>
         </LinearLayout>
     </androidx.core.widget.NestedScrollView>

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

@@ -4,7 +4,8 @@
   -->
 
 <layout xmlns:tools="http://schemas.android.com/tools"
-    xmlns:android="http://schemas.android.com/apk/res/android">
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <data>
         <import type="android.view.View"/>
@@ -54,22 +55,35 @@
                 android:id="@+id/topic"
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
+                android:layout_marginEnd="4dp"
+                android:layout_marginRight="4dp"
                 android:layout_weight="1"
-                android:textAppearance="@style/NavView.TextView.Medium"
-                android:maxLines="@{simpleMode ? 2 : 3}"
                 android:ellipsize="end"
-                tools:maxLines="3"
+                android:maxLines="3"
+                android:textAppearance="@style/NavView.TextView.Medium"
                 tools:text="Rozdział II: Panowanie Piastów i Jagiellonów.Przeniesiony z 11 grudnia. Nie wiem co się dzieje w tym roku nie będzie już religii w szkołach podstawowych w Polsce i Europie zachodniej Afryki" />
 
             <com.google.android.material.button.MaterialButton
                 android:id="@+id/editButton"
+                style="@style/Widget.MaterialComponents.Button.OutlinedButton"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                android:fontFamily="@font/community_material_font_v3_5_95_1"
                 android:minWidth="0dp"
-                style="@style/Widget.MaterialComponents.Button.OutlinedButton"
                 android:text="\uFC92"
                 android:textSize="20sp"
-                android:fontFamily="@font/community_material_font_v3_5_95_1"/>
+                tools:visibility="gone" />
+
+            <com.mikepenz.iconics.view.IconicsImageView
+                android:id="@+id/isDone"
+                android:layout_width="32dp"
+                android:layout_height="32dp"
+                android:layout_gravity="top"
+                android:layout_marginLeft="4dp"
+                android:layout_marginRight="4dp"
+                app:iiv_color="@color/md_green_500"
+                app:iiv_icon="cmd-check"
+                tools:background="@sample/check" />
 
         </LinearLayout>
 

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

@@ -21,7 +21,7 @@
                 app:tabSelectedTextColor="?colorPrimary"
                 app:tabTextColor="?android:textColorPrimary"/>
 
-            <androidx.viewpager.widget.ViewPager
+            <pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyViewPager
                 android:id="@+id/viewPager"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
@@ -29,4 +29,4 @@
         </LinearLayout>
 
     </pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoIndicator>
-</layout>
+</layout>

app/src/main/res/layout/fragment_timetable_v2.xml

@@ -28,7 +28,7 @@
                         android:id="@+id/tabLayout"
                         android:layout_width="match_parent"
                         android:layout_height="48dp"
-                        android:background="@color/colorSurface_6dp"
+                        android:background="@color/colorSurface_1dp"
                         app:rtl_tabIndicatorColor="?colorPrimary"
                         app:rtl_tabMaxWidth="300dp"
                         app:rtl_tabMinWidth="90dp"
@@ -40,7 +40,7 @@
                         app:rtl_tabTextAppearance="@style/rtl_RecyclerTabLayout.Tab" />
                 </com.google.android.material.appbar.AppBarLayout>
 
-                <androidx.viewpager.widget.ViewPager
+                <pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyViewPager
                     android:id="@+id/viewPager"
                     android:layout_width="match_parent"
                     android:layout_height="match_parent"
@@ -94,4 +94,4 @@
 
         </FrameLayout>
     <!--</pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoIndicator>-->
-</layout>
+</layout>

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

@@ -16,8 +16,14 @@
             android:layout_width="match_parent"
             android:layout_height="match_parent">
 
+            <ProgressBar
+                android:id="@+id/progressBar"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center" />
+
             <androidx.appcompat.widget.AppCompatTextView
-                android:id="@+id/gradesNoData"
+                android:id="@+id/noData"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_gravity="center"
@@ -25,13 +31,17 @@
                 android:fontFamily="sans-serif-light"
                 android:text="@string/grades_no_data"
                 android:textSize="24sp"
-                app:drawableTopCompat="@drawable/ic_no_grades" />
+                android:visibility="gone"
+                app:drawableTopCompat="@drawable/ic_no_grades"
+                tools:visibility="visible" />
 
             <androidx.recyclerview.widget.RecyclerView
-                android:id="@+id/gradesRecyclerView"
+                android:id="@+id/list"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
-                tools:listitem="@layout/grades_item_subject" />
+                android:visibility="gone"
+                tools:listitem="@layout/grades_item_subject"
+                tools:visibility="visible" />
         </FrameLayout>
     </pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoIndicator>
 </layout>

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

@@ -1,7 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2020-3-30.
+  -->
+
 <layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools">
+    xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoIndicator
         android:id="@+id/refreshLayout"
@@ -23,12 +26,11 @@
                 app:tabSelectedTextColor="?colorPrimary"
                 app:tabTextColor="?android:textColorPrimary" />
 
-            <androidx.viewpager.widget.ViewPager
+            <pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyViewPager
                 android:id="@+id/viewPager"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
                 app:layout_behavior="@string/appbar_scrolling_view_behavior" />
-
         </LinearLayout>
     </pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoIndicator>
 </layout>

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

@@ -1,47 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<layout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="vertical">
-
-        <androidx.recyclerview.widget.RecyclerView
-            android:id="@+id/homeworkView"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent">
-
-        </androidx.recyclerview.widget.RecyclerView>
-
-        <LinearLayout
-            android:id="@+id/homeworkNoData"
-            android:layout_width="match_parent"
-            android:orientation="vertical"
-            android:gravity="center"
-            android:layout_height="match_parent"
-            android:visibility="gone"
-            tools:visibility="visible">
-
-            <com.mikepenz.iconics.view.IconicsImageView
-                android:layout_width="match_parent"
-                android:layout_height="92dp"
-                app:iiv_color="?android:textColorPrimary"
-                app:iiv_icon="szf-file-document-edit"
-                app:iiv_size="92dp" />
-
-            <TextView
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_margin="8dp"
-                android:fontFamily="sans-serif-medium"
-                android:gravity="center"
-                android:text="@string/homework_no_data"
-                android:textSize="18sp"
-                android:textStyle="italic" />
-
-        </LinearLayout>
-    </LinearLayout>
-</layout>

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

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2020-3-30.
+  -->
+
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <ProgressBar
+            android:id="@+id/progressBar"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center" />
+
+        <androidx.appcompat.widget.AppCompatTextView
+            android:id="@+id/noData"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:drawablePadding="16dp"
+            android:fontFamily="sans-serif-light"
+            android:text="@string/homework_no_data"
+            android:textSize="24sp"
+            android:visibility="gone"
+            app:drawableTopCompat="@drawable/ic_no_homework"
+            tools:visibility="visible" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/list"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:visibility="gone"
+            tools:listitem="@layout/event_list_item"
+            tools:visibility="visible" />
+    </FrameLayout>
+</layout>

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

@@ -231,8 +231,7 @@
                             android:ellipsize="middle"
                             android:text="Wyniki sprawdzianu z matematyki.pdf"
                             android:visibility="visible"
-                            app:chipIcon="@drawable/googleg_standard_color_18"
-                            app:chipMinHeight="36dp" />
+                            app:chipIcon="@drawable/googleg_standard_color_18" />
 
                         <ProgressBar
                             style="?android:attr/progressBarStyle"

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

@@ -1,30 +1,41 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2019-11-22.
+  -->
+
 <layout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
     <FrameLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
-        <androidx.recyclerview.widget.RecyclerView
-            android:id="@+id/notificationsView"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
-            tools:listitem="@layout/row_notifications_item"
-            tools:visibility="gone" />
+        <ProgressBar
+            android:id="@+id/progressBar"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center" />
 
         <androidx.appcompat.widget.AppCompatTextView
-            android:id="@+id/notificationsNoData"
+            android:id="@+id/noData"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="center"
-            app:drawableTopCompat="@drawable/ic_no_notifications"
             android:drawablePadding="16dp"
             android:fontFamily="sans-serif-light"
             android:text="@string/notifications_no_data"
             android:textSize="24sp"
             android:visibility="gone"
+            app:drawableTopCompat="@drawable/ic_no_notifications"
             tools:visibility="visible" />
 
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/list"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:visibility="gone"
+            tools:listitem="@layout/notifications_list_item"
+            tools:visibility="visible" />
     </FrameLayout>
-</layout>
+</layout>

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

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="?selectableItemBackground"
+        android:orientation="vertical"
+        android:padding="8dp">
+
+        <TextView
+            android:id="@+id/title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/NavView.TextView.Medium"
+            tools:text="Dzisiaj 1 to szczęśliwy numerek" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                android:id="@+id/profileDate"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                tools:text="Władca Androida • 22 listopada" />
+
+            <TextView
+                android:id="@+id/type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                tools:text="Szczęśliwy numerek" />
+        </LinearLayout>
+    </LinearLayout>
+</layout>

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

@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:orientation="vertical"
-    android:padding="8dp"
-    android:background="?selectableItemBackground">
-
-    <TextView
-        android:id="@+id/title"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:textAppearance="@style/NavView.TextView.Medium"
-        tools:text="Dzisiaj 1 to szczęśliwy numerek" />
-
-    <LinearLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content">
-
-        <TextView
-            android:id="@+id/profileDate"
-            android:layout_width="0dp"
-            android:layout_height="wrap_content"
-            android:layout_weight="1"
-            tools:text="Władca Androida • 22 listopada" />
-
-        <TextView
-            android:id="@+id/type"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            tools:text="Szczęśliwy numerek" />
-    </LinearLayout>
-
-</LinearLayout>

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

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2020-3-30.
+  -->
+
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoIndicator
+        android:id="@+id/refreshLayout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="vertical">
+
+            <com.google.android.material.tabs.TabLayout
+                android:id="@+id/tabLayout"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@color/colorSurface_6dp"
+                app:tabIndicatorColor="?colorPrimary"
+                app:tabMode="auto"
+                app:tabSelectedTextColor="?colorPrimary"
+                app:tabTextColor="?android:textColorPrimary" />
+
+            <pl.szczodrzynski.edziennik.ui.modules.base.lazypager.LazyViewPager
+                android:id="@+id/viewPager"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                app:layout_behavior="@string/appbar_scrolling_view_behavior" />
+        </LinearLayout>
+    </pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoIndicator>
+</layout>

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

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2020-3-30.
+  -->
+
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoIndicator
+        android:id="@+id/refreshLayout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <ProgressBar
+                android:id="@+id/progressBar"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center" />
+
+            <androidx.appcompat.widget.AppCompatTextView
+                android:id="@+id/noData"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:drawablePadding="16dp"
+                android:fontFamily="sans-serif-light"
+                android:text="@string/grades_no_data"
+                android:textSize="24sp"
+                android:visibility="gone"
+                app:drawableTopCompat="@drawable/ic_no_grades"
+                tools:visibility="visible" />
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/list"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:visibility="gone"
+                tools:listitem="@layout/grades_item_subject"
+                tools:visibility="visible" />
+        </FrameLayout>
+    </pl.szczodrzynski.edziennik.utils.SwipeRefreshLayoutNoIndicator>
+</layout>

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

@@ -3,16 +3,39 @@
   ~ Copyright (c) Kuba Szczodrzyński 2019-12-19.
   -->
 
-<layout xmlns:android="http://schemas.android.com/apk/res/android">
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:padding="8dp"
+        android:background="?selectableItemBackground"
         android:orientation="vertical"
-        android:background="?selectableItemBackground">
+        android:padding="8dp">
 
+        <TextView
+            android:id="@+id/title"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textAppearance="@style/NavView.TextView.Medium"
+            tools:text="Dzisiaj 1 to szczęśliwy numerek" />
 
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
 
+            <TextView
+                android:id="@+id/profileDate"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                tools:text="Władca Androida • 22 listopada" />
+
+            <TextView
+                android:id="@+id/type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                tools:text="Szczęśliwy numerek" />
+        </LinearLayout>
     </LinearLayout>
-</layout>
+</layout>

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

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2020-3-30.
+  -->
+
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <ProgressBar
+            android:id="@+id/progressBar"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center" />
+
+        <androidx.appcompat.widget.AppCompatTextView
+            android:id="@+id/noData"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:drawablePadding="16dp"
+            android:fontFamily="sans-serif-light"
+            android:text="@string/grades_no_data"
+            android:textSize="24sp"
+            android:visibility="gone"
+            app:drawableTopCompat="@drawable/ic_no_grades"
+            tools:visibility="visible" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/list"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:visibility="gone"
+            tools:listitem="@layout/grades_item_subject"
+            tools:visibility="visible" />
+    </FrameLayout>
+</layout>

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

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2020-3-30.
+  -->
+
+<layout xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/text"
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1"
+            android:gravity="center"
+            android:text="Fragment 1" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/button"
+            style="@style/Widget.MaterialComponents.Button.OutlinedButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_margin="8dp"
+            android:checkable="true"
+            android:text="Enable/disable Swipe to refresh"/>
+    </LinearLayout>
+</layout>

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

@@ -1278,4 +1278,7 @@
     <string name="registration_enable_dialog_title">Rejestracja na serwerze</string>
     <string name="registration_enable_dialog_text">Rejestracja jest automatyczna, jeśli ta opcja jest włączona. Pozwala na tworzenie i odbieranie wydarzeń udostępnionych innym uczniom z Twojej klasy. Dzięki temu, można dodawać do dziennika pozycje nie zapisane przez nauczyciela.\n\nUpewnij się, że zapoznałeś się z warunkami <a href="http://szkolny.eu/privacy-policy">Polityki prywatności</a> i akceptujesz jej postanowienia.</string>
     <string name="menu_add_remove_cards">Dodaj lub usuń karty</string>
+    <string name="menu_template">Template</string>
+    <string name="messages_attachment_download_again">Pobierz ponownie</string>
+    <string name="hint_mark_as_done">Oznacz jako wykonane</string>
 </resources>

build.gradle

@@ -5,8 +5,8 @@ buildscript {
         kotlin_version = '1.3.61'
 
         release = [
-                versionName: "4.0-rc.3",
-                versionCode: 4000039
+                versionName: "4.0-rc.4",
+                versionCode: 4000049
         ]
 
         setup = [

codegen/.gitignore

@@ -0,0 +1 @@
+/build

codegen/build.gradle

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-28. 
+ */
+
+apply plugin: 'java-library'
+apply plugin: 'kotlin'
+apply plugin: 'kotlin-kapt'
+
+kapt {
+    generateStubs = true
+}
+
+sourceSets {
+    main {
+        java {
+            srcDir "${buildDir.absolutePath}/tmp/kapt/main/kotlinGenerated/"
+        }
+    }
+}
+
+
+dependencies {
+    kapt project(":annotation")
+    compileOnly project(':annotation')
+    implementation fileTree(include: ['*.jar'], dir: 'libs')
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+
+    // configuration generator for service providers
+    implementation "com.google.auto.service:auto-service:1.0-rc4"
+    kapt "com.google.auto.service:auto-service:1.0-rc4"
+    kapt "androidx.room:room-compiler:${versions.room}"
+    implementation "androidx.room:room-runtime:${versions.room}"
+    implementation "com.squareup:kotlinpoet:1.5.0"
+    implementation "androidx.sqlite:sqlite:2.1.0@aar"
+
+}
+
+sourceCompatibility = "7"
+targetCompatibility = "7"

codegen/src/main/java/pl/szczodrzynski/edziennik/codegen/FileGenerator.kt

@@ -0,0 +1,339 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2020-3-28.
+ */
+
+package pl.szczodrzynski.edziennik.codegen
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.Ignore
+import androidx.room.TypeConverters
+import com.google.auto.service.AutoService
+import com.squareup.kotlinpoet.*
+import com.squareup.kotlinpoet.ParameterizedTypeName.Companion.parameterizedBy
+import pl.szczodrzynski.edziennik.annotation.SelectiveDao
+import pl.szczodrzynski.edziennik.annotation.UpdateSelective
+import java.io.File
+import javax.annotation.processing.*
+import javax.lang.model.SourceVersion
+import javax.lang.model.element.*
+import javax.lang.model.type.*
+import javax.lang.model.util.ElementFilter
+import javax.tools.Diagnostic
+import kotlin.reflect.KClass
+
+@Suppress("unused")
+@AutoService(Processor::class)
+@SupportedSourceVersion(SourceVersion.RELEASE_8)
+@SupportedOptions(FileGenerator.KAPT_KOTLIN_GENERATED_OPTION_NAME)
+class FileGenerator : AbstractProcessor() {
+    companion object {
+        const val KAPT_KOTLIN_GENERATED_OPTION_NAME = "kapt.kotlin.generated"
+    }
+
+    private data class TypeConverter(val dataType: TypeMirror, val converterType: TypeElement, val methodName: Name, val returnType: TypeMirror)
+
+    private inline fun <reified T : Annotation> Element.getAnnotationClassValue(f: T.() -> KClass<*>) = try {
+        getAnnotation(T::class.java).f()
+        throw Exception("Expected to get a MirroredTypeException")
+    } catch (e: MirroredTypeException) {
+        e.typeMirror
+    }
+    private inline fun <reified T : Annotation> Element.getAnnotationClassValues(f: T.() -> Array<KClass<*>>) = try {
+        getAnnotation(T::class.java).f()
+        throw Exception("Expected to get a MirroredTypesException")
+    } catch (e: MirroredTypesException) {
+        e.typeMirrors
+    }
+
+    override fun process(set: MutableSet<out TypeElement>?, roundEnvironment: RoundEnvironment?): Boolean {
+        roundEnvironment?.getElementsAnnotatedWith(SelectiveDao::class.java)?.forEach { it ->
+            if (it.kind != ElementKind.CLASS) {
+                processingEnv.messager.printMessage(Diagnostic.Kind.ERROR, "Can only be applied to classes, element: $it")
+                return false
+            }
+
+            val generatedSourcesRoot = processingEnv.options[KAPT_KOTLIN_GENERATED_OPTION_NAME]
+            if (generatedSourcesRoot?.isEmpty() != false) {
+                processingEnv.messager.printMessage(Diagnostic.Kind.ERROR, "Can't find the target directory for generated Kotlin files.")
+                return false
+            }
+
+            val file = File(generatedSourcesRoot)
+            file.mkdirs()
+
+            val dao = it as TypeElement
+            processClass(dao, file)
+
+            //processingEnv.messager.printMessage(Diagnostic.Kind.ERROR, "package = $packageName, className = $className, methodName = $methodName, tableName = $tableName, paramName = $paramName, paramClass = $paramClass")
+        }
+        return true
+    }
+
+    private fun processClass(dao: TypeElement, file: File) {
+        val daoName = dao.simpleName.toString()
+        val packageName = processingEnv.elementUtils.getPackageOf(dao).toString()
+
+        val dbType = processingEnv.typeUtils.asElement(dao.getAnnotationClassValue<SelectiveDao> { db }) as TypeElement
+        val typeConverters = dbType.getAnnotationClassValues<TypeConverters> { value }.map {
+            processingEnv.typeUtils.asElement(it) as TypeElement
+        }.map { type ->
+            processingEnv.elementUtils.getAllMembers(type).mapNotNull { element ->
+                if (element is ExecutableElement) {
+                    if (element.returnType.toString() == "java.lang.String"
+                            || element.returnType.toString() == "java.lang.Long"
+                            || element.returnType.toString() == "java.lang.Integer"
+                            || element.returnType.kind.isPrimitive) {
+                        if (element.simpleName.startsWith("to") && element.parameters.isNotEmpty())
+                            return@mapNotNull TypeConverter(element.parameters.first().asType(), type, element.simpleName, element.returnType)
+                    }
+                }
+                null
+            }
+        }.flatten()
+
+        //processingEnv.messager.printMessage(Diagnostic.Kind.ERROR, "c = ${typeConverters.joinToString()}")
+
+        val roomDatabase = ClassName("androidx.room", "RoomDatabase")
+        val selective = TypeSpec.classBuilder("${daoName}Selective")
+                .primaryConstructor(FunSpec.constructorBuilder()
+                        .addParameter("__db", roomDatabase, KModifier.PRIVATE)
+                        .build())
+                .addProperty(PropertySpec.builder("__db", roomDatabase)
+                        .initializer("__db")
+                        .addModifiers(KModifier.PRIVATE)
+                        .build())
+
+        val usedTypeConverters = mutableSetOf<TypeConverter>()
+
+        processingEnv.elementUtils.getAllMembers(dao).forEach { element ->
+            if (element.kind != ElementKind.METHOD)
+                return@forEach
+            val method = element as ExecutableElement
+            val annotation = method.getAnnotation(UpdateSelective::class.java) ?: return@forEach
+            usedTypeConverters.addAll(processMethod(selective, method, annotation, typeConverters))
+        }
+
+        usedTypeConverters.forEach { converter ->
+            selective.addProperty(PropertySpec.builder("__${converter.converterType.simpleName}", converter.converterType.asType().asTypeName(), KModifier.PRIVATE)
+                    .delegate(CodeBlock.builder()
+                            .beginControlFlow("lazy")
+                            .addStatement("%T()", converter.converterType.asType().asTypeName())
+                            .endControlFlow()
+                            .build())
+                    .build())
+        }
+
+        FileSpec.builder(packageName, "${daoName}Selective")
+                .addType(selective.build())
+                .build()
+                .writeTo(file)
+    }
+
+    private fun VariableElement.name() = getAnnotation(ColumnInfo::class.java)?.name ?: simpleName.toString()
+
+    private fun processMethod(cls: TypeSpec.Builder, method: ExecutableElement, annotation: UpdateSelective, typeConverters: List<TypeConverter>): List<TypeConverter> {
+        val methodName = method.simpleName.toString()
+        val parameter = method.parameters.first()
+        val paramName = parameter.simpleName.toString()
+        val paramTypeElement = processingEnv.typeUtils.asElement(parameter.asType()) as TypeElement
+        val paramTypeAnnotation = paramTypeElement.getAnnotation(Entity::class.java)
+
+        val tableName = paramTypeAnnotation.tableName
+        val primaryKeys = annotation.primaryKeys
+        val skippedColumns = annotation.skippedColumns
+
+
+        var members = processingEnv.elementUtils.getAllMembers(paramTypeElement)
+        val allFields = ElementFilter.fieldsIn(members)
+
+        // check all super classes
+        var superType = paramTypeElement.superclass
+        while (superType !is NoType) {
+            val superTypeElement = processingEnv.typeUtils.asElement(superType) as TypeElement
+            members = processingEnv.elementUtils.getAllMembers(superTypeElement)
+            allFields += ElementFilter.fieldsIn(members)
+            superType = superTypeElement.superclass
+        }
+
+        allFields.removeAll { skippedColumns.contains(it.name()) }
+        allFields.removeAll { it.getAnnotation(Ignore::class.java) != null }
+        allFields.removeAll { field -> field.modifiers.any { it == Modifier.STATIC || it == Modifier.FINAL } }
+        val allFieldsDistinct = allFields.distinct()
+
+        val fields = allFieldsDistinct.filterNot { primaryKeys.contains(it.name()) }
+        val primaryFields = allFieldsDistinct.filter { primaryKeys.contains(it.name()) }
+        val fieldNames = fields.map { it.name() }
+        val primaryFieldNames = primaryFields.map { it.name() }
+
+        val fieldNamesQuery = fieldNames.joinToString { "$it = ?" }
+        val primaryFieldNamesQuery = primaryFieldNames.joinToString(" AND ") { "$it = ?" }
+        val query = "\"\"\"UPDATE $tableName SET $fieldNamesQuery WHERE $primaryFieldNamesQuery\"\"\""
+
+        val entityInsertionAdapter = ClassName("androidx.room", "EntityInsertionAdapter")
+        val supportSQLiteStatement = ClassName("androidx.sqlite.db", "SupportSQLiteStatement")
+
+        val usedTypeConverters = mutableListOf<TypeConverter>()
+
+        val bind = CodeBlock.builder()
+        (fields+primaryFields).forEachIndexed { i, field ->
+            val index = i+1
+            val fieldName = field.simpleName.toString()
+            val name = "${paramName}_$fieldName"
+            val realName = "${paramName}.$fieldName"
+            val nullable = field.getAnnotation(org.jetbrains.annotations.Nullable::class.java) != null
+
+            var param = when (field.asType().kind) {
+                TypeKind.BOOLEAN -> "if ($name) 1L else 0L"
+                TypeKind.BYTE,
+                TypeKind.SHORT,
+                TypeKind.INT -> "$name.toLong()"
+                TypeKind.CHAR -> "$name.toString()"
+                TypeKind.FLOAT -> "$name.toDouble()"
+                else -> when (field.asType().toString()) {
+                    "java.lang.String" -> name
+                    "java.lang.Boolean" -> "if ($name == true) 1L else 0L"
+                    "java.lang.Byte",
+                    "java.lang.Short",
+                    "java.lang.Integer" -> "$name.toLong()"
+                    "java.lang.Long" -> name
+                    "java.lang.Char" -> "$name.toString()"
+                    "java.lang.Float" -> "$name.toDouble()"
+                    "java.lang.Double" -> name
+                    else -> name
+                }
+            }
+
+            var isConvert = false
+            val bindMethod = when (field.asType().kind) {
+                TypeKind.BOOLEAN -> "bindLong"
+                TypeKind.BYTE -> "bindLong"
+                TypeKind.SHORT -> "bindLong"
+                TypeKind.INT -> "bindLong"
+                TypeKind.LONG -> "bindLong"
+                TypeKind.CHAR -> "bindString"
+                TypeKind.FLOAT -> "bindDouble"
+                TypeKind.DOUBLE -> "bindDouble"
+                else -> when (field.asType().toString()) {
+                    "java.lang.String" -> "bindString"
+                    "java.lang.Boolean" -> "bindLong"
+                    "java.lang.Byte" -> "bindLong"
+                    "java.lang.Short" -> "bindLong"
+                    "java.lang.Integer" -> "bindLong"
+                    "java.lang.Long" -> "bindLong"
+                    "java.lang.Char" -> "bindString"
+                    "java.lang.Float" -> "bindDouble"
+                    "java.lang.Double" -> "bindDouble"
+                    else -> {
+                        val converter = typeConverters.firstOrNull {
+                            it.dataType.toString() == field.asType().toString()
+                        }
+                        if (converter != null) {
+                            param = "__${converter.converterType.simpleName}.${converter.methodName}($realName)"
+                            param = when (converter.returnType.toString()) {
+                                "java.lang.Integer", "int",
+                                "java.lang.Short", "short",
+                                "java.lang.Byte", "byte" -> "$param.toLong()"
+                                "java.lang.Boolean", "boolean" -> "if ($param) 1L else 0L"
+                                "java.lang.Char", "char" -> "$param.toString()"
+                                "java.lang.Float", "float" -> "$param.toDouble()"
+                                else -> param
+                            }
+                            isConvert = true
+                            usedTypeConverters += converter
+                            when (converter.returnType.toString()) {
+                                "java.lang.Integer", "int",
+                                "java.lang.Short", "short",
+                                "java.lang.Byte", "byte",
+                                "java.lang.Boolean", "boolean" -> "bindLong"
+                                "java.lang.Char", "char" -> "bindString"
+                                "java.lang.Float", "float" -> "bindDouble"
+                                else -> "bindString"
+                            }
+                        }
+                        else "bind${field.asType()}"
+                    }
+                }
+            }
+
+            if (!isConvert) {
+                bind.addStatement("val $name = $realName")
+            }
+            else {
+                bind.addStatement("val $name = $param")
+                param = name
+            }
+            if (nullable) {
+                bind.beginControlFlow("if ($name == null)")
+                        .addStatement("stmt.bindNull($index)")
+                        .endControlFlow()
+                        .beginControlFlow("else")
+                        .addStatement("stmt.$bindMethod($index, $param)")
+                        .endControlFlow()
+            }
+            else {
+                bind.addStatement("stmt.$bindMethod($index, $param)")
+            }
+        }
+
+        val adapterName = "__insertionAdapterOf$methodName"
+        val delegate = CodeBlock.builder().add("""
+            |lazy {
+            |    object : EntityInsertionAdapter<%T>(__db) {
+            |        override fun createQuery() = $query
+            |        override fun bind(stmt: %T, $paramName: %T) {
+            |${bind.indent().indent().indent().build()}
+            |        }
+            |    }
+            |}""".trimMargin(), paramTypeElement.asClassName(), supportSQLiteStatement, paramTypeElement.asClassName())
+
+        cls.addProperty(PropertySpec.builder(adapterName, entityInsertionAdapter.parameterizedBy(paramTypeElement.asClassName()), KModifier.PRIVATE)
+                .delegate(delegate.build())
+                .build())
+
+        val list = ClassName("kotlin.collections", "List")
+        val longArray = ClassName("kotlin", "LongArray")
+
+        val function = FunSpec.builder(methodName)
+                .addModifiers(KModifier.INTERNAL)
+                .addParameter("item", parameter.asType().asTypeName())
+                .returns(Long::class.java)
+                .addStatement("__db.assertNotSuspendingTransaction()")
+                .addStatement("__db.beginTransaction()")
+                .addCode("""
+                    |try {
+                    |    val _result = $adapterName.insertAndReturnId(item)
+                    |    __db.setTransactionSuccessful()
+                    |    return _result
+                    |} finally {
+                    |    __db.endTransaction()
+                    |}
+                """.trimMargin())
+                .build()
+
+        val functionAll = FunSpec.builder(methodName+"All")
+                .addModifiers(KModifier.INTERNAL)
+                .addParameter("items", list.parameterizedBy(parameter.asType().asTypeName()))
+                .returns(longArray)
+                .addStatement("__db.assertNotSuspendingTransaction()")
+                .addStatement("__db.beginTransaction()")
+                .addCode("""
+                    |try {
+                    |    val _result = $adapterName.insertAndReturnIdsArray(items)
+                    |    __db.setTransactionSuccessful()
+                    |    return _result
+                    |} finally {
+                    |    __db.endTransaction()
+                    |}
+                """.trimMargin())
+                .build()
+
+        cls.addFunction(function)
+        cls.addFunction(functionAll)
+        return usedTypeConverters
+    }
+
+    override fun getSupportedAnnotationTypes(): MutableSet<String> {
+        return mutableSetOf(SelectiveDao::class.java.canonicalName)
+    }
+}

settings.gradle

@@ -1,3 +1,5 @@
+include ':codegen'
+include ':annotation'
 rootProject.name='Szkolny.eu'
 include ':app', ':agendacalendarview', ':mhttp', ':material-about-library', ':cafebar', ':szkolny-font', ':nachos'
 /*