End of part 9

Author: codinginflow

app/src/main/java/com/codinginflow/mvvmtodo/ui/tasks/TasksAdapter.kt

@@ -9,7 +9,7 @@ import androidx.recyclerview.widget.RecyclerView
 import com.codinginflow.mvvmtodo.data.Task
 import com.codinginflow.mvvmtodo.databinding.ItemTaskBinding
 
-class TasksAdapter : ListAdapter<Task, TasksAdapter.TasksViewHolder>(DiffCallback()) {
+class TasksAdapter(private val listener: OnItemClickListener) : ListAdapter<Task, TasksAdapter.TasksViewHolder>(DiffCallback()) {
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TasksViewHolder {
         val binding = ItemTaskBinding.inflate(LayoutInflater.from(parent.context), parent, false)
@@ -21,7 +21,26 @@ class TasksAdapter : ListAdapter<Task, TasksAdapter.TasksViewHolder>(DiffCallbac
         holder.bind(currentItem)
     }
 
-    class TasksViewHolder(private val binding: ItemTaskBinding) : RecyclerView.ViewHolder(binding.root) {
+    inner class TasksViewHolder(private val binding: ItemTaskBinding) : RecyclerView.ViewHolder(binding.root) {
+
+        init {
+            binding.apply {
+                root.setOnClickListener {
+                    val position = adapterPosition
+                    if (position != RecyclerView.NO_POSITION) {
+                        val task = getItem(position)
+                        listener.onItemClick(task)
+                    }
+                }
+                checkBoxCompleted.setOnClickListener {
+                    val position = adapterPosition
+                    if (position != RecyclerView.NO_POSITION) {
+                        val task = getItem(position)
+                        listener.onCheckBoxClick(task, checkBoxCompleted.isChecked)
+                    }
+                }
+            }
+        }
 
         fun bind(task: Task) {
             binding.apply {
@@ -33,6 +52,11 @@ class TasksAdapter : ListAdapter<Task, TasksAdapter.TasksViewHolder>(DiffCallbac
         }
     }
 
+    interface OnItemClickListener {
+        fun onItemClick(task: Task)
+        fun onCheckBoxClick(task: Task, isChecked: Boolean)
+    }
+
     class DiffCallback : DiffUtil.ItemCallback<Task>() {
         override fun areItemsTheSame(oldItem: Task, newItem: Task) =
             oldItem.id == newItem.id

app/src/main/java/com/codinginflow/mvvmtodo/ui/tasks/TasksFragment.kt

@@ -12,14 +12,15 @@ import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.codinginflow.mvvmtodo.R
 import com.codinginflow.mvvmtodo.data.SortOrder
+import com.codinginflow.mvvmtodo.data.Task
 import com.codinginflow.mvvmtodo.databinding.FragmentTasksBinding
 import com.codinginflow.mvvmtodo.util.onQueryTextChanged
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.launch
 
 @AndroidEntryPoint
-class TasksFragment : Fragment(R.layout.fragment_tasks) {
+class TasksFragment : Fragment(R.layout.fragment_tasks), TasksAdapter.OnItemClickListener {
 
     private val viewModel: TasksViewModel by viewModels()
 
@@ -28,7 +29,7 @@ class TasksFragment : Fragment(R.layout.fragment_tasks) {
 
         val binding = FragmentTasksBinding.bind(view)
 
-        val taskAdapter = TasksAdapter()
+        val taskAdapter = TasksAdapter(this)
 
         binding.apply {
             recyclerViewTasks.apply {
@@ -45,6 +46,14 @@ class TasksFragment : Fragment(R.layout.fragment_tasks) {
         setHasOptionsMenu(true)
     }
 
+    override fun onItemClick(task: Task) {
+        viewModel.onTaskSelected(task)
+    }
+
+    override fun onCheckBoxClick(task: Task, isChecked: Boolean) {
+        viewModel.onTaskCheckedChanged(task, isChecked)
+    }
+
     override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
         inflater.inflate(R.menu.menu_fragment_tasks, menu)
 

app/src/main/java/com/codinginflow/mvvmtodo/ui/tasks/TasksViewModel.kt

@@ -6,6 +6,7 @@ import androidx.lifecycle.asLiveData
 import androidx.lifecycle.viewModelScope
 import com.codinginflow.mvvmtodo.data.PreferencesManager
 import com.codinginflow.mvvmtodo.data.SortOrder
+import com.codinginflow.mvvmtodo.data.Task
 import com.codinginflow.mvvmtodo.data.TaskDao
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.combine
@@ -30,6 +31,8 @@ class TasksViewModel @ViewModelInject constructor(
         taskDao.getTasks(query, filterPreferences.sortOrder, filterPreferences.hideCompleted)
     }
 
+    val tasks = tasksFlow.asLiveData()
+
     fun onSortOrderSelected(sortOrder: SortOrder) = viewModelScope.launch {
         preferencesManager.updateSortOrder(sortOrder)
     }
@@ -38,5 +41,9 @@ class TasksViewModel @ViewModelInject constructor(
         preferencesManager.updateHideCompleted(hideCompleted)
     }
 
-    val tasks = tasksFlow.asLiveData()
+    fun onTaskSelected(task: Task) {}
+
+    fun onTaskCheckedChanged(task: Task, isChecked: Boolean) = viewModelScope.launch {
+        taskDao.update(task.copy(completed = isChecked))
+    }
 }