a

devbricksx-android/sample-notebook-core/src/androidTest/java/com/dailystudio/devbricksx/notebook/ExampleInstrumentedTest.kt

@@ -0,0 +1,24 @@
+package com.dailystudio.devbricksx.notebook
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.dailystudio.devbricksx.notebook", appContext.packageName)
+    }
+}

devbricksx-android/sample-notebook-core/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+</manifest>

devbricksx-android/sample-notebook-core/src/main/java/com/dailystudio/devbricksx/notebook/DummyDataUtils.kt

@@ -0,0 +1,134 @@
+package com.dailystudio.devbricksx.notebook
+
+import android.content.Context
+import androidx.lifecycle.LifecycleCoroutineScope
+import androidx.lifecycle.lifecycleScope
+import com.dailystudio.devbricksx.development.Logger
+import com.dailystudio.devbricksx.notebook.db.Note
+import com.dailystudio.devbricksx.notebook.db.Notebook
+import com.dailystudio.devbricksx.notebook.db.NotesDatabase
+import com.dailystudio.devbricksx.utils.JSONUtils
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import java.util.Date
+
+object DummyDataUtils {
+
+    private val notebooks = """
+        [
+            { "name": "Games" },
+            { "name": "Techs" },
+            { "name": "English" }
+        ]    
+    """.trimIndent()
+
+    private val notes = """
+        [
+            [
+                { "title": "Call of Duty: Mobile", "desc": "Call of Duty: Mobile is a free-to-play first-person shooter video game developed by TiMi Studio Group and published by Activision for Android and iOS." },
+                { "title": "Pokémon GO", "desc": "Pokémon Go is a 2016 augmented reality mobile game, part of the Pokémon franchise, developed and published by Niantic in collaboration with Nintendo and The Pokémon Company for iOS and Android devices." },
+                { "title": "Candy Crush Saga", "desc": "Pokémon Go is a 2016 augmented reality mobile game, part of the Pokémon franchise, developed and published by Niantic in collaboration with Nintendo and The Pokémon Company for iOS and Android devices." }  
+            ],
+            [
+                { "title": "Kotlin", "desc": "Kotlin is a programming language that makes coding concise, cross-platform, and fun. It is Google's preferred language for Android app development." },
+                { "title": "Jetpack Compose", "desc": "Jetpack Compose is Android's recommended modern toolkit for building native UI. It simplifies and accelerates UI development on Android." },
+                { "title": "KSP", "desc": "Kotlin Symbol Processing (KSP) is an API that you can use to develop lightweight compiler plugins." },
+                { "title": "Unidirectional Data Flow", "desc": "UDF is a waterfall, information flows in one direction through a single source providing many benefits." },
+                { "title": "KMM", "desc": "Kotlin Multiplatform technology simplifies the development of cross-platform projects. It reduces time spent writing and maintaining the same code for different platforms while retaining the flexibility and benefits of native programming." }
+            ],
+            [
+                { "title": "Old Saying 1", "desc": "Well done is better than well said." },
+                { "title": "Old Saying 2", "desc": "Once you choose hope, anything's possible." },
+                { "title": "Old Saying 3", "desc": "You only live once but if you do it right, once is enough." },
+                { "title": "Old Saying 4", "desc": "Sometimes the heart sees what is invisible to the eye." }
+            ]
+        ]
+    """.trimIndent()
+
+    fun createSampleNotes(
+        context: Context,
+        coroutineScope: LifecycleCoroutineScope
+    ) {
+        coroutineScope.launch(Dispatchers.IO) {
+//            val notebooks = arrayOf(
+//                "Games", "Tech",
+//                "Books", "Office",
+//                "Home"
+//            )
+            val notebooks =
+                try {
+                    JSONUtils.fromString(notebooks, Array<Notebook>::class.java)
+                } catch (e: Exception) {
+                    Logger.error("failed to parse notebooks: $e")
+                    null
+                }
+
+            val notes =
+                try {
+                    JSONUtils.fromString(DummyDataUtils.notes, Array<Array<Note>>::class.java)
+                } catch (e: Exception) {
+                    Logger.error("failed to parse notes: $e")
+                    null
+                }
+
+            if (notebooks == null || notes == null) {
+                Logger.warn("data of notebooks or notes are incorrect, skip generating dummy data")
+
+                return@launch
+            }
+
+            val maxNotes = 5
+
+            val database = NotesDatabase.getDatabase(
+                context)
+
+            database.clearAllTables()
+            val notesInNotebook = mutableListOf<Note>()
+            for ((i, nb) in notebooks.withIndex()) {
+                val notebookId = i + 1
+                val nb = Notebook(notebookId).apply {
+                    name = nb.name
+                    created = Date()
+                    lastModified = created
+                }
+
+//                for (j in 0 until maxNotes) {
+//                    val noteId = notebookId * maxNotes + j + 1
+//
+//                    notes.add(Note(noteId).apply {
+//                        notebook_id = notebookId
+//                        title = "$j"
+//                        desc = "Write something for $j"
+//
+//                        created = Date()
+//                        lastModified = created
+//                    })
+//                }
+
+                notesInNotebook.clear()
+                for ((j, note) in notes[i].withIndex()) {
+                    val noteId = notebookId * maxNotes + j + 1
+                    Logger.debug("adding note = $note")
+                    Logger.debug("noteId = $noteId")
+
+                    notesInNotebook.add(Note(noteId).apply {
+                        title = note.title
+                        desc = note.desc
+
+                        notebook_id = notebookId
+
+                        created = Date()
+                        lastModified = created
+                    })
+                }
+
+                Logger.debug("ADD: notebook = [$nb]")
+                database.notebookDao().insertOrUpdate(nb)
+                Logger.debug("ADD: notesInNotebook = [$notesInNotebook]")
+                database.noteDao().insertOrUpdate(notesInNotebook)
+            }
+
+        }
+    }
+
+}

devbricksx-android/sample-notebook-core/src/main/java/com/dailystudio/devbricksx/notebook/NotebookApplication.kt

@@ -0,0 +1,12 @@
+package com.dailystudio.devbricksx.notebook
+
+import com.dailystudio.devbricksx.app.DevBricksMultiDexApplication
+import com.dailystudio.devbricksx.notebook.core.BuildConfig
+
+class NotebookApplication : DevBricksMultiDexApplication() {
+
+    override fun isDebugBuild(): Boolean {
+        return BuildConfig.DEBUG
+    }
+
+}

devbricksx-android/sample-notebook-core/src/main/java/com/dailystudio/devbricksx/notebook/db/Notebook.kt

@@ -0,0 +1,99 @@
+package com.dailystudio.devbricksx.notebook.db
+
+import androidx.room.ForeignKey
+import androidx.room.Ignore
+import com.dailystudio.devbricksx.annotations.data.IgnoreField
+import com.dailystudio.devbricksx.annotations.data.RoomCompanion
+import com.dailystudio.devbricksx.annotations.viewmodel.ViewModel
+import com.dailystudio.devbricksx.database.DateConverter
+import com.dailystudio.devbricksx.database.SelectableRecord
+import java.util.*
+
+@RoomCompanion(primaryKeys = ["id"],
+        autoGenerate = true,
+        converters = [DateConverter::class],
+        extension = NotebookDaoExtension::class,
+        database = "notes",
+)
+@ViewModel(group = "notebook")
+open class Notebook(id: Int = 0) : SelectableRecord(id) {
+
+    companion object {
+
+        fun createNoteBook(name: String): Notebook {
+            return Notebook(0).apply {
+                val now = System.currentTimeMillis()
+
+                this.name = name
+                this.created = Date(now)
+                this.lastModified = this.created
+            }
+        }
+
+    }
+
+    var name: String? = null
+
+    override fun toString(): String {
+        return buildString {
+            append("Notebook [$id]: $name")
+        }
+    }
+}
+
+class NotebookInfo(override val id: Int): Notebook(id) {
+    var notesCount: Int = 0
+}
+
+@RoomCompanion(primaryKeys = ["id"],
+        autoGenerate = true,
+        extension = NoteDaoExtension::class,
+        database = "notes",
+        foreignKeys = [ ForeignKey(entity = Notebook::class,
+                parentColumns = ["id"],
+                childColumns = ["notebook_id"],
+                onDelete = ForeignKey.CASCADE
+        )]
+)
+@ViewModel(group = "notebook")
+class Note(id: Int = 0) : SelectableRecord(id) {
+
+    companion object {
+
+        fun createNote(notebookId: Int = -1,
+                       title: String? = null,
+                       desc: String? = null): Note {
+            return Note(0).apply {
+                val now = System.currentTimeMillis()
+
+                this.notebook_id = notebookId
+                this.title = title
+                this.desc = desc
+                this.created = Date(now)
+                this.lastModified = this.created
+            }
+        }
+
+
+        fun copyNote(note: Note): Note {
+            return Note(note.id).apply {
+                notebook_id = note.notebook_id
+                title = note.title
+                desc = note.desc
+                created = note.created
+                lastModified = note.lastModified
+            }
+        }
+
+    }
+
+    var notebook_id: Int = -1
+    var title: String? = null
+    var desc: String? = null
+
+    override fun toString(): String {
+        return buildString {
+            append("Note [$id, notebook: $notebook_id]: $title, [desc: $desc]")
+        }
+    }
+}

devbricksx-android/sample-notebook-core/src/main/java/com/dailystudio/devbricksx/notebook/db/NotebookDaoExtension.kt

@@ -0,0 +1,42 @@
+package com.dailystudio.devbricksx.notebook.db
+
+import androidx.paging.PagingSource
+import androidx.room.Query
+import com.dailystudio.devbricksx.annotations.data.DaoExtension
+import com.dailystudio.devbricksx.annotations.data.Page
+import kotlinx.coroutines.flow.Flow
+
+@DaoExtension(entity = Notebook::class)
+abstract class NotebookDaoExtension {
+
+/*
+    @Query("SELECT * FROM notebook ORDER BY last_modified DESC")
+    @Page(pageSize = 50)
+    abstract fun getAllNotebooksOrderedByLastModifiedLivePaged(): LiveData<PagedList<Notebook>>
+*/
+
+    @Query("SELECT notebook.id, notebook.name, notebook.created, notebook.last_modified, count(note.id) as notesCount FROM notebook LEFT OUTER JOIN note ON note.notebook_id = notebook.id GROUP BY notebook.id ORDER BY notebook.last_modified DESC")
+    abstract fun getAllNotebooksOrderedByLastModifiedPagingSource(): PagingSource<Int, NotebookInfo>
+
+    @Query("SELECT * FROM notebook ORDER BY last_modified DESC")
+    abstract fun getAllNotebooksOrderedByLastModifiedLivePaged(): Flow<List<Notebook>>
+
+    @Query("DELETE FROM notebook WHERE id IN (:ids)")
+    abstract fun deleteNotebooks(ids: IntArray)
+
+}
+
+@DaoExtension(entity = Note::class)
+abstract class NoteDaoExtension {
+
+    @Query("SELECT * FROM note WHERE notebook_id = :notebookId ORDER BY last_modified DESC ")
+    @Page(pageSize = 50)
+    abstract fun getAllNotesOrderedByLastModifiedLivePaged(notebookId: Int): PagingSource<Int, Note>
+
+    @Query("SELECT COUNT(*) FROM note WHERE notebook_id = :notebookId")
+    abstract fun countNotes(notebookId: Int): Int
+
+    @Query("DELETE FROM note WHERE id IN (:ids)")
+    abstract fun deleteNotes(ids: IntArray)
+
+}

devbricksx-android/sample-notebook-core/src/main/java/com/dailystudio/devbricksx/notebook/model/NotebookViewModelExt.kt

@@ -0,0 +1,95 @@
+package com.dailystudio.devbricksx.notebook.model
+
+import android.app.Application
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.asLiveData
+import androidx.lifecycle.viewModelScope
+import androidx.paging.Pager
+import androidx.paging.PagingConfig
+import androidx.paging.PagingData
+import androidx.paging.PagingSource
+import androidx.paging.cachedIn
+import androidx.paging.map
+import com.dailystudio.devbricksx.development.Logger
+import com.dailystudio.devbricksx.notebook.db.Note
+import com.dailystudio.devbricksx.notebook.db.Notebook
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.flatMapLatest
+import kotlinx.coroutines.flow.flow
+import kotlinx.coroutines.flow.flowOn
+import kotlinx.coroutines.flow.mapLatest
+import kotlinx.coroutines.launch
+
+class NotebookViewModelExt(application: Application): NotebookViewModel(application) {
+
+    val allNotebooksCounted: Flow<PagingData<Notebook>> =
+        Pager(
+            PagingConfig(20)
+        ) {
+            notebookRepository.getAllNotebooksOrderedByLastModifiedPagingSource() as PagingSource<Int, Notebook>
+        }.flow.flowOn(Dispatchers.IO)
+
+    private val _currentNoteId = MutableStateFlow(-1)
+    private val _currentNotebookId = MutableStateFlow(-1)
+
+    val currentNote: LiveData<Note> =
+        _currentNoteId.flatMapLatest { noteId ->
+            Logger.debug("[DC] retrieve note: $noteId")
+
+            noteRepository.getNoteFlow(noteId).mapLatest {
+                it ?: Note.createNote()
+            }
+        }.flowOn(Dispatchers.IO).asLiveData()
+
+
+    val notesInOpenedNotebook: Flow<PagingData<Note>> =
+        _currentNotebookId.flatMapLatest { notebookId ->
+            Logger.debug("[Note Data}: notebookId = $notebookId")
+            Pager (
+                PagingConfig(20),
+            ) {
+                getAllNotesOrderedByLastModifiedLivePaged(notebookId)
+            }.flow.mapLatest {
+                it.map {
+                    it.also {
+                        Logger.debug("[Note Data]: note = $it")
+                    }
+                }
+            }.flowOn(Dispatchers.IO).cachedIn(viewModelScope)
+        }.flowOn(Dispatchers.IO)
+
+
+    private val _currentNote: MutableLiveData<Note> =
+        MutableLiveData(Note.createNote())
+
+    fun openNotebook(notebookId: Int) {
+        _currentNotebookId.value = notebookId
+    }
+
+    fun closeNotebook() {
+        _currentNotebookId.value = -1
+    }
+
+    fun openNote(id: Int) {
+        _currentNoteId.value = id
+    }
+
+    fun closeNote() {
+        _currentNoteId.value  = -1
+    }
+
+    fun deleteNotes(ids: Set<Int>): Job =
+        viewModelScope.launch(Dispatchers.IO) {
+            noteRepository.deleteNotes(ids.toIntArray())
+        }
+
+    fun deleteNotebooks(ids: Set<Int>): Job =
+        viewModelScope.launch(Dispatchers.IO) {
+            notebookRepository.deleteNotebooks(ids.toIntArray())
+        }
+
+}

devbricksx-android/sample-notebook-core/src/main/res/drawable-anydpi/ic_action_close.xml

@@ -0,0 +1,16 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF"
+    android:alpha="0.8">
+  <group android:scaleX="0.90909094"
+      android:scaleY="0.90909094"
+      android:translateX="1.0909091"
+      android:translateY="1.0909091">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M19,6.41L17.59,5 12,10.59 6.41,5 5,6.41 10.59,12 5,17.59 6.41,19 12,13.41 17.59,19 19,17.59 13.41,12z"/>
+  </group>
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/drawable-anydpi/ic_action_delete.xml

@@ -0,0 +1,16 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF"
+    android:alpha="0.8">
+  <group android:scaleX="0.90909094"
+      android:scaleY="0.90909094"
+      android:translateX="1.0909091"
+      android:translateY="1.0909091">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2V7H6v12zM19,4h-3.5l-1,-1h-5l-1,1H5v2h14V4z"/>
+  </group>
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/drawable-anydpi/ic_action_finish.xml

@@ -0,0 +1,16 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF"
+    android:alpha="0.8">
+  <group android:scaleX="0.90909094"
+      android:scaleY="0.90909094"
+      android:translateX="1.0909091"
+      android:translateY="1.0909091">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M9,16.2L4.8,12l-1.4,1.4L9,19 21,7l-1.4,-1.4L9,16.2z"/>
+  </group>
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/drawable-anydpi/ic_fab_edit.xml

@@ -0,0 +1,16 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF"
+    android:alpha="0.8">
+  <group android:scaleX="0.90909094"
+      android:scaleY="0.90909094"
+      android:translateX="1.0909091"
+      android:translateY="1.0909091">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M3,17.25V21h3.75L17.81,9.94l-3.75,-3.75L3,17.25zM20.71,7.04c0.39,-0.39 0.39,-1.02 0,-1.41l-2.34,-2.34c-0.39,-0.39 -1.02,-0.39 -1.41,0l-1.83,1.83 3.75,3.75 1.83,-1.83z"/>
+  </group>
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/drawable-anydpi/ic_fab_new.xml

@@ -0,0 +1,14 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="26.4"
+    android:viewportHeight="26.4"
+    android:tint="#FFFFFF"
+    android:alpha="0.8">
+  <group android:translateX="1.2"
+      android:translateY="1.2">
+      <path
+          android:fillColor="#FF000000"
+          android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
+  </group>
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/drawable-anydpi/ic_notebook.xml

@@ -0,0 +1,16 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#503E4E"
+    android:alpha="0.8">
+  <group android:scaleX="0.90909094"
+      android:scaleY="0.90909094"
+      android:translateX="1.0909091"
+      android:translateY="1.0909091">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M19,3L5,3c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h14c1.1,0 2,-0.9 2,-2L21,5c0,-1.1 -0.9,-2 -2,-2zM14,17L7,17v-2h7v2zM17,13L7,13v-2h10v2zM17,9L7,9L7,7h10v2z"/>
+  </group>
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/drawable-anydpi/ic_selected.xml

@@ -0,0 +1,16 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#503E4E"
+    android:alpha="0.8">
+  <group android:scaleX="0.90909094"
+      android:scaleY="0.90909094"
+      android:translateX="1.0909091"
+      android:translateY="1.0909091">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M7,11v2h10v-2L7,11zM12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM12,20c-4.41,0 -8,-3.59 -8,-8s3.59,-8 8,-8 8,3.59 8,8 -3.59,8 -8,8z"/>
+  </group>
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,15 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108"
+    android:tint="#FFFFFF">
+    <group android:scaleX="2.2021875"
+        android:scaleY="2.2021875"
+        android:translateX="27.57375"
+        android:translateY="27.57375">
+        <path
+            android:fillColor="@android:color/white"
+            android:pathData="M6,17h3l2,-4L11,7L5,7v6h3zM14,17h3l2,-4L19,7h-6v6h3z"/>
+    </group>
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
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+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,15 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108"
+    android:tint="#FFFFFF">
+  <group android:scaleX="2.2021875"
+      android:scaleY="2.2021875"
+      android:translateX="27.57375"
+      android:translateY="27.57375">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M6,17h3l2,-4L11,7L5,7v6h3zM14,17h3l2,-4L19,7h-6v6h3z"/>
+  </group>
+</vector>

devbricksx-android/sample-notebook-core/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

devbricksx-android/sample-notebook-core/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

devbricksx-android/sample-notebook-core/src/main/res/values-night/themes.xml

@@ -0,0 +1,20 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+
+    <!-- Base application theme. -->
+    <style name="Theme.SampleNotebook" parent="Theme.Material3.Light.NoActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/primaryColor</item>
+        <item name="colorPrimaryVariant">@color/primaryLightColor</item>
+        <item name="colorOnPrimary">@color/primaryTextColor</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/secondaryColor</item>
+        <item name="colorSecondaryVariant">@color/secondaryLightColor</item>
+        <item name="colorOnSecondary">@color/primaryTextColor</item>
+
+        <item name="statusBarBackground">@color/primaryColor</item>
+        <item name="android:statusBarColor">@color/primaryColor</item>
+        <item name="appBarLayoutStyle">@style/Widget.App.AppBarLayout</item>
+        <item name="toolbarStyle">@style/Widget.App.Toolbar</item>
+    </style>
+
+</resources>

devbricksx-android/sample-notebook-core/src/main/res/values/colors.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="primaryColor">#503E4E</color>
+    <color name="primaryDarkColor">#503E4E</color>
+    <color name="accentColor">#503E4E</color>
+    <color name="secondaryColor">#503E4E</color>
+    <color name="secondaryLightColor">#503E4E</color>
+    <color name="secondaryDarkColor">#503E4E</color>
+    <color name="primaryTextColor">#ffffff</color>
+    <color name="secondaryTextColor">#ffffff</color>
+
+</resources>

devbricksx-android/sample-notebook-core/src/main/res/values/dimens.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<resources>
+	
+	<dimen name="title_font_size">20dp</dimen>
+	<dimen name="selector_width">8dp</dimen>
+
+</resources>

devbricksx-android/sample-notebook-core/src/main/res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#503E4E</color>
+</resources>

devbricksx-android/sample-notebook-core/src/main/res/values/strings.xml

@@ -0,0 +1,21 @@
+<resources>
+
+    <string name="app_name">Notes</string>
+    <string name="app_desc">This is a sample application written with DevbricksX library. It illustrates how to use the library to compose a notebook app in the most efficient way.\n\nIt includes a set of functions that a notebook app should have. And, all the notes are store permanently in you local storage.\n\nIf you have any problem, please feel free to contact me:\n\n\t\t\tdailystudio2010@gmail.com\n</string>
+
+    <string name="dialog_title_new_notebook">New notebook</string>
+    <string name="hint_new_notebook">Name</string>
+
+    <string name="label_delete">Delete</string>
+    <string name="label_finish">Finish</string>
+    <string name="label_empty">&lt;empty&gt;</string>
+
+    <string name="menu_about">About</string>
+
+    <string name="hint_title">Note Title</string>
+    <string name="hint_content">Start writing here …</string>
+
+    <string name="prompt_selection">Selected %1$d</string>
+    <string name="prompt_deletion">Are you sure you want to delete these items?</string>
+
+</resources>

devbricksx-android/sample-notebook-core/src/main/res/values/themes.xml

@@ -0,0 +1,54 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+
+    <!-- Base application theme. -->
+    <style name="Theme.SampleNotebook" parent="Theme.Material3.Light.NoActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/primaryColor</item>
+        <item name="colorPrimaryVariant">@color/primaryLightColor</item>
+        <item name="colorOnPrimary">@color/primaryTextColor</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/secondaryColor</item>
+        <item name="colorSecondaryVariant">@color/secondaryLightColor</item>
+        <item name="colorOnSecondary">@color/primaryTextColor</item>
+
+        <item name="statusBarBackground">@color/primaryColor</item>
+        <item name="android:statusBarColor">@color/primaryColor</item>
+        <item name="appBarLayoutStyle">@style/Widget.App.AppBarLayout</item>
+        <item name="toolbarStyle">@style/Widget.App.Toolbar</item>
+    </style>
+
+    <style name="Widget.App.AppBarLayout" parent="Widget.Material3.AppBarLayout">
+        <!-- Change the background color of the AppBarLayout so the AppBarLayout is green.
+                The toolbar is transparent by default so you will see this color through the toolbar. -->
+        <item name="android:background">@color/primaryColor</item>
+    </style>
+
+    <style name="Widget.App.Toolbar" parent="Widget.Material3.Toolbar">
+        <item name="materialThemeOverlay">@style/ThemeOverlay.App.Toolbar</item>
+        <item name="titleTextColor">@color/white</item>
+        <item name="navigationIconTint">@color/white</item>
+
+        <item name="colorControlActivated">#FFffffff</item>
+    </style>
+
+    <style name="ThemeOverlay.App.Toolbar" parent="">
+        <!-- Text color -->
+        <item name="android:editTextColor">@color/white</item>
+        <!-- Hint text color -->
+        <item name="android:textColorHint">@color/white</item>
+        <item name="colorControlNormal">@color/white</item>
+        <item name="colorControlActivated">@color/white</item>
+    </style>
+
+    <style name="ToolbarChip" parent="Widget.Material3.Chip.Input">
+        <item name="chipBackgroundColor">@color/white</item>
+        <item name="chipStrokeWidth">0dp</item>
+        <item name="checkedIconVisible">true</item>
+        <item name="shapeAppearanceOverlay">@style/ShapeAppearance.App.SmallComponent</item>
+    </style>
+
+    <style name="ShapeAppearance.App.SmallComponent" parent="ShapeAppearance.Material3.SmallComponent">
+        <item name="cornerSize">16dp</item>
+    </style>
+
+</resources>

devbricksx-android/sample-notebook-core/src/test/java/com/dailystudio/devbricksx/notebook/ExampleUnitTest.kt

@@ -0,0 +1,17 @@
+package com.dailystudio.devbricksx.notebook
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}