Implemented the TaskListView view and its respective view model in the app target.

This commit is contained in:
2026-02-10 16:15:17 +01:00
parent 1385f0df34
commit 8d3be6de14
4 changed files with 179 additions and 0 deletions
+10
View File
@@ -154,6 +154,16 @@
} }
} }
}, },
"view.task-list.content-unavailable.title" : {
"extractionState" : "manual",
"localizations" : {
"en" : {
"stringUnit" : {
"state" : "translated",
"value" : "All Tasks Completed"
}
}
}
} }
}, },
"version" : "1.1" "version" : "1.1"
@@ -0,0 +1,43 @@
import SwiftData
import SwiftUI
extension TaskListView {
/// View model for managing the logic for the task list view.
///
/// This observable class encapsulates the state and business logic for the task list view.
/// It follows the MVVM pattern to separate presentation logic from the view layer.
///
/// ## Responsibilities
/// - Providing the navigation title for the current group
@Observable
final class ViewModel {
// MARK: Properties
/// The task group to display tasks for.
///
/// This property determines which tasks are fetched and displayed in the list.
private let group: TodoGroup
// MARK: Initialization
/// Initializes a new view model instance for a specific task group.
///
/// - Parameter group: The task group to display tasks for.
init(group: TodoGroup) {
self.group = group
}
// MARK: Computed
/// The navigation title for the current task group.
///
/// This computed property provides the localized title for the current group,
/// suitable for display in a navigation bar.
///
/// - Returns: The localized title key for the current group.
var navigationTitle: LocalizedStringKey { group.title }
}
}
+99
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@@ -0,0 +1,99 @@
import SwiftData
import SwiftUI
/// A view that displays all todo tasks for a specific task group.
///
/// This view shows a filtered list of tasks based on the selected group (today, upcoming, past, or completed).
/// The view uses a view model to separate business logic from presentation.
struct TaskListView: View {
// MARK: Properties
/// Query to fetch todos filtered by the current group.
@Query
private var tasks: [Todo]
/// The view model managing the business logic for this view.
@State
private var viewModel: ViewModel
// MARK: Initialization
/// Creates a new task list view for a specific group.
/// - Parameter group: The todo group to display tasks for.
init(group: TodoGroup) {
_tasks = .init(FetchDescriptor<Todo>(group: group))
_viewModel = .init(initialValue: ViewModel(group: group))
}
// MARK: Body
/// The content and behavior of the view.
///
/// Displays a list of tasks filtered by the current group.
var body: some View {
Group {
if tasks.isEmpty {
ContentUnavailableView(
"view.task-list.content-unavailable.title",
systemImage: "checkmark.circle"
)
} else {
List {
ForEach(tasks) { todo in
Item(todo)
}
}
.listStyle(.grouped)
}
}
.navigationTitle(viewModel.navigationTitle)
}
}
// MARK: - Previews
#Preview(
"Task list with empty tasks",
traits: .emptyContainer
) {
NavigationStack {
TaskListView(group: .today)
}
}
#Preview(
"Task list - today",
traits: .sampleTasks
) {
NavigationStack {
TaskListView(group: .today)
}
}
#Preview(
"Task list - upcoming",
traits: .sampleTasks
) {
NavigationStack {
TaskListView(group: .upcoming)
}
}
#Preview(
"Task list - overdue",
traits: .sampleTasks
) {
NavigationStack {
TaskListView(group: .overdue)
}
}
#Preview(
"Task list - completed",
traits: .sampleTasks
) {
NavigationStack {
TaskListView(group: .completed)
}
}
@@ -0,0 +1,27 @@
import Foundation
import SwiftData
import Testing
@testable import Todos
@Suite("TaskList view model tests")
struct TaskListViewModelTests {
// MARK: Computed tests
@Test(
"navigationTitle returns correct title for each and every group",
arguments: TodoGroup.allCases
)
func navigationTitle(for group: TodoGroup) {
// GIVEN
let viewModel = TaskListView.ViewModel(group: group)
// WHEN
let title = viewModel.navigationTitle
// THEN
#expect(title == group.title)
}
}