Homework 6

app/build.gradle

@@ -1,6 +1,7 @@
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
+    id 'androidx.navigation.safeargs'
 }
 
 android {
@@ -35,9 +36,19 @@ android {
         viewBinding true
     }
 }
-
 dependencies {
+    def lifecycle_version = "2.6.1"
+    def arch_version = "2.2.0"
 
+    // ViewModel
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version"
+    // LiveData
+    implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version"
+    // reflection-free flavor
+    implementation 'com.github.kirich1409:viewbindingpropertydelegate-noreflection:1.5.8'
+    def nav_version = "2.5.3"
+    implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
+    implementation "androidx.navigation:navigation-ui-ktx:$nav_version"
     implementation 'androidx.core:core-ktx:1.7.0'
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation 'com.google.android.material:material:1.8.0'

app/src/main/AndroidManifest.xml

@@ -9,10 +9,10 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
-        android:theme="@style/Theme.Three_lines"
+        android:theme="@style/Theme.MaterialComponents.Light.NoActionBar"
         tools:targetApi="31">
         <activity
-            android:name=".MainActivity"
+            android:name=".presentation.MainActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/com/example/three_lines/data/Note.kt

@@ -0,0 +1,8 @@
+package com.example.three_lines.data
+
+import java.util.*
+
+data class Note(
+    val id : String = UUID.randomUUID().toString(),
+    val text : String,
+)

app/src/main/java/com/example/three_lines/data/NotesDataSource.kt

@@ -0,0 +1,11 @@
+package com.example.three_lines.data
+
+object NotesDataSource {
+    val notesList = mutableListOf<Note>()
+    fun addNote(text : String){
+        notesList.add(Note(text = text))
+    }
+    fun deleteNote(note: Note){
+        notesList.remove(note)
+    }
+}

app/src/main/java/com/example/three_lines/data/repository/NoteRepositoryImpl.kt

@@ -0,0 +1,20 @@
+package com.example.three_lines.data.repository
+
+import com.example.three_lines.data.Note
+import com.example.three_lines.data.NotesDataSource
+
+class NoteRepositoryImpl(
+    private val notesDataSource : NotesDataSource = NotesDataSource
+) : NotesRepository {
+    override fun getNotes(): List<Note> {
+            return notesDataSource.notesList
+    }
+
+    override fun addNote(text: String) {
+        notesDataSource.addNote(text)
+    }
+
+    override fun deleteNote(note: Note) {
+        notesDataSource.deleteNote(note)
+    }
+}

app/src/main/java/com/example/three_lines/data/repository/NotesRepository.kt

@@ -0,0 +1,9 @@
+package com.example.three_lines.data.repository
+
+import com.example.three_lines.data.Note
+
+interface NotesRepository {
+    fun getNotes(): List<Note>
+    fun addNote(text: String)
+    fun deleteNote(note: Note)
+}

app/src/main/java/com/example/three_lines/domain/AddNoteUseCase.kt

@@ -0,0 +1,11 @@
+package com.example.three_lines.domain
+
+import com.example.three_lines.data.repository.NoteRepositoryImpl
+import com.example.three_lines.data.repository.NotesRepository
+
+class AddNoteUseCase(private val notesRepository : NotesRepository = NoteRepositoryImpl()
+) {
+    fun execute(text: String){
+        notesRepository.addNote(text)
+    }
+}

app/src/main/java/com/example/three_lines/domain/DeleteNoteUseCase.kt

@@ -0,0 +1,12 @@
+package com.example.three_lines.domain
+
+import com.example.three_lines.data.Note
+import com.example.three_lines.data.repository.NoteRepositoryImpl
+import com.example.three_lines.data.repository.NotesRepository
+class DeleteNoteUseCase(
+    private val notesRepository: NotesRepository = NoteRepositoryImpl()
+) {
+    fun execute(note: Note) {
+        notesRepository.deleteNote(note)
+    }
+}

app/src/main/java/com/example/three_lines/domain/GetNotesUseCase.kt

@@ -0,0 +1,13 @@
+package com.example.three_lines.domain
+
+import com.example.three_lines.data.Note
+import com.example.three_lines.data.repository.NoteRepositoryImpl
+import com.example.three_lines.data.repository.NotesRepository
+
+class GetNotesUseCase(
+    private val notesRepository: NotesRepository = NoteRepositoryImpl()
+) {
+    fun execute(): List<Note>{
+        return notesRepository.getNotes()
+    }
+}

app/src/main/java/com/example/three_lines/presentation/MainActivity.kt

@@ -0,0 +1,18 @@
+package com.example.three_lines.presentation
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import by.kirich1409.viewbindingdelegate.viewBinding
+import com.example.three_lines.R
+import com.example.three_lines.databinding.ActivityMainBinding
+
+class MainActivity : AppCompatActivity(R.layout.activity_main) {
+    private val binding by viewBinding(ActivityMainBinding::bind)
+
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(binding.root)
+        }
+
+}

app/src/main/java/com/example/three_lines/presentation/fragment_add_note/AddNoteFragment.kt

@@ -0,0 +1,31 @@
+package com.example.three_lines.presentation.fragment_add_note
+
+import android.os.Bundle
+import android.view.View
+import android.widget.Toast
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import androidx.navigation.fragment.findNavController
+import by.kirich1409.viewbindingdelegate.viewBinding
+import com.example.three_lines.R
+import com.example.three_lines.databinding.FragmentAddNoteBinding
+import com.example.three_lines.presentation.list.NotesListViewModel
+
+class AddNoteFragment : Fragment(R.layout.fragment_add_note) {
+    private val viewModel by viewModels<NotesListViewModel>()
+    private val binding by viewBinding(FragmentAddNoteBinding::bind)
+
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        with(binding) {
+            toolbar.setNavigationOnClickListener {
+                findNavController().popBackStack()
+            }
+            floatingActionButton.setOnClickListener {
+                viewModel.onAddClicked(editTextNote.text.toString())
+                findNavController().popBackStack()
+            }
+        }
+    }
+}