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Implementation Plan: Flutter Feature Parity for Tasks

Features to Implement

1. Drag-and-Drop Reordering

Goal: Allow users to reorder tasks within categories by dragging

Implementation:

  • Add @State for tracking drag state in TaskRow
  • Use SwiftUI's .draggable() and .dropDestination() modifiers (macOS 13+)
  • Store custom order per category in UserDefaults (like Flutter's SharedPreferences)
  • Add categoryOrder: [TaskCategory: [String]] to TasksViewModel
  • Visual feedback: opacity reduction on dragged item, highlight on drop target

Files to modify:

  • TasksPage.swift - Add drag/drop to TaskRow and TaskCategorySection
  • TasksViewModel - Add order persistence and reorder methods

2. Swipe-to-Delete (SKIPPED - not suitable for macOS)

Reason: Swipe gestures are designed for touchscreens. On macOS, hover-to-reveal delete button already exists and works better with mouse/trackpad.

3. Task Indentation (Sub-tasks)

Goal: Visual hierarchy with 0-3 indent levels

Implementation:

  • Add @State var indentLevels: [String: Int] to TasksViewModel (task ID -> indent level)
  • Visual: 28pt indent per level + vertical line indicator
  • Horizontal swipe on indented items to change indent level
  • Store in UserDefaults for persistence

Files to modify:

  • TasksPage.swift - Add indent visual and gesture handling
  • TasksViewModel - Add indent state management

Implementation Order

  1. Phase 1: Drag-and-Drop (highest impact)
  2. Phase 2: Swipe-to-Delete
  3. Phase 3: Task Indentation

Technical Notes

  • No backend changes needed - all state stored locally like Flutter
  • Must handle conflict with multi-select mode (disable drag in multi-select)
  • Disable drag-drop when not sorting by Due Date (only makes sense for categorized view)
  • Use spring animations for smooth UX