Added support for todo deletion to the TaskListView view in the app target.
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@@ -18,17 +18,24 @@ extension TaskListView {
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// MARK: Type aliases
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/// Closure type for handling task deletion operations.
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///
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/// - Parameters:
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/// - todos: The current array of todo tasks.
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/// - offsets: The index set of tasks to delete.
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typealias DeleteClosure = ([Todo], IndexSet) -> Void
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/// Closure type for handling task reorder operations.
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///
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/// - Parameters:
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/// - tasks: The current array of tasks.
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/// - todos: The current array of todo tasks.
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/// - source: The index set of items being moved.
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/// - destination: The destination index for the moved items.
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typealias ReorderClosure = ([Todo], IndexSet, Int) -> Void
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// MARK: Properties
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/// Query to fetch todos filtered by group and completion status.
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/// Query to fetch todo tasks filtered by group and completion status.
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///
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/// This query is initialized with a todo fetch descriptor that applies predicates
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/// based on the group type and completion filter. SwiftData automatically
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@@ -37,7 +44,7 @@ extension TaskListView {
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/// Tasks are sorted by their `order` property first, then by date-based criteria
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/// specific to each group, enabling both manual and automatic ordering.
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@Query
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private var tasks: [Todo]
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private var todos: [Todo]
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/// Indicates whether tasks in this view can be reordered through drag and drop.
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///
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@@ -45,6 +52,12 @@ extension TaskListView {
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/// determines whether the `.onMove` modifier is applied to the task list.
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private let canReorder: Bool
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/// Closure called when tasks are deleted through swipe-to-delete.
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///
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/// This closure is invoked by the `.onDelete` modifier and is responsible for
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/// removing the selected tasks from the model context.
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private let onDelete: DeleteClosure
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/// Closure called when tasks are reordered through drag and drop.
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///
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/// This closure is invoked by the `.onMove` modifier and is responsible for
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@@ -67,12 +80,14 @@ extension TaskListView {
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/// - group: The todo group category to filter by (today, upcoming, overdue, or completed).
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/// - showCompleted: Whether to include completed tasks in the results. Only applies to groups other than `.completed`.
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/// - onReorder: A closure called when tasks are reordered.
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/// - onDelete: A closure called when tasks are deleted.
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init(
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group: TodoGroup,
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showCompleted: Bool,
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onDelete: @escaping DeleteClosure,
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onReorder: @escaping ReorderClosure
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) {
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self._tasks = .init(
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self._todos = .init(
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FetchDescriptor<Todo>(
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group: group,
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showCompleted: showCompleted
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@@ -80,6 +95,7 @@ extension TaskListView {
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)
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self.canReorder = group.canReorder
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self.onDelete = onDelete
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self.onReorder = onReorder
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}
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@@ -97,7 +113,7 @@ extension TaskListView {
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/// in read-only mode with chronological sorting.
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var body: some View {
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Group {
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if tasks.isEmpty {
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if todos.isEmpty {
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ContentUnavailableView(
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"view.task-list-content.content-unavailable.title",
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systemImage: "checkmark.circle"
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@@ -105,19 +121,7 @@ extension TaskListView {
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}
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else {
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List {
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if canReorder {
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ForEach(tasks) {
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TaskListView.Item($0)
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}
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.onMove { source, destination in
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onReorder(tasks, source, destination)
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}
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}
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else {
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ForEach(tasks) {
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TaskListView.Item($0)
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}
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}
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items
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}
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.listStyle(.grouped)
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}
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@@ -127,6 +131,34 @@ extension TaskListView {
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}
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// MARK: - Helpers
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private extension TaskListView.Content {
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// MARK: Computed
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/// A view that renders the task items with appropriate modifiers.
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@ViewBuilder
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var items: some View {
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let items = ForEach(todos) {
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TaskListView.Item($0)
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}
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.onDelete { offsets in
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onDelete(todos, offsets)
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}
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if canReorder {
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items.onMove { source, destination in
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onReorder(todos, source, destination)
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}
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}
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else {
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items
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}
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}
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}
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// MARK: - Previews
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#Preview(
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@@ -136,7 +168,9 @@ extension TaskListView {
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TaskListView.Content(
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group: .today,
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showCompleted: .random()
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) { _, _, _ in
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) { _, _ in
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// On delete closure
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} onReorder: { _, _, _ in
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// On reorder closure
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}
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}
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@@ -148,7 +182,9 @@ extension TaskListView {
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TaskListView.Content(
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group: .today,
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showCompleted: false
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) { _, _, _ in
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) { _, _ in
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// On delete closure
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} onReorder: { _, _, _ in
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// On reorder closure
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}
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}
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@@ -160,7 +196,9 @@ extension TaskListView {
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TaskListView.Content(
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group: .today,
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showCompleted: true
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) { _, _, _ in
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) { _, _ in
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// On delete closure
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} onReorder: { _, _, _ in
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// On reorder closure
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}
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}
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@@ -172,7 +210,9 @@ extension TaskListView {
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TaskListView.Content(
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group: .completed,
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showCompleted: .random()
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) { _, _, _ in
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) { _, _ in
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// On delete closure
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} onReorder: { _, _, _ in
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// On reorder closure
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}
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}
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@@ -9,6 +9,10 @@ struct TaskListView: View {
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// MARK: Properties
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/// The SwiftData model context for performing data operations.
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@Environment(\.modelContext)
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private var modelContext
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/// The view model managing the state and business logic for this view.
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///
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/// This view model holds the group configuration and completion filter state.
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@@ -40,8 +44,18 @@ struct TaskListView: View {
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Content(
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group: viewModel.group,
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showCompleted: viewModel.showCompleted
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) { tasks, source, destination in
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viewModel.reorderTasks(tasks, from: source, to: destination)
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) { tasks, offsets in
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viewModel.deleteTasks(
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tasks,
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at: offsets,
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from: modelContext
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)
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} onReorder: { tasks, source, destination in
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viewModel.reorderTasks(
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tasks,
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from: source,
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to: destination
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)
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}
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.navigationTitle(viewModel.navigationTitle)
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.toolbar {
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