# Key Migration Progress Report
## Branch: key_migration_phase3
## Date: 2025-08-22
## Latest: Phase 3 Complete - Chord Handler Integration ✅
## ✅ Phase 1 Complete - Simple Toggle Operations
### Successfully Migrated Keys:
- **F12** - Toggle key indicator
- **v** - Toggle selection mode (Cell/Row/Column)
- **n** - Next search match
- **Shift+N** - Previous search match OR toggle row numbers (context-aware)
- **Shift+S** - Show column statistics
- **Alt+S** - Cycle column packing mode
- **Space** - Toggle viewport lock
- **x/X** - Toggle cursor lock
- **Ctrl+Space** - Toggle viewport lock (alternative)
- **/** - Start search (now navigates to first match like vim)
- **\** - Start column search
### Architecture Established:
1. Actions defined in `src/ui/actions.rs`
2. Key mappings in `src/ui/key_mapper.rs`
3. Handlers in `src/ui/enhanced_tui.rs::try_handle_action()`
4. Old handling removed from `handle_results_input()`
## 📋 Remaining Work
### ✅ Phase 3: Chord Handler Integration
**Status**: COMPLETE (2025-08-22)
**Keys migrated**:
- `yy` - Yank row → Action::Yank(YankTarget::Row)
- `yc` - Yank column → Action::Yank(YankTarget::Column)
- `ya` - Yank all → Action::Yank(YankTarget::All)
- `yv` - Yank cell → Action::Yank(YankTarget::Cell)
- `yq` - Yank query → Action::Yank(YankTarget::Query)
**Solution**:
- Updated KeyChordHandler to return Actions instead of strings
- ChordResult::CompleteChord now contains Action enum
- Enhanced TUI routes chord Actions through try_handle_action()
- Removed old string-based handle_chord_action() method
- Fixed compilation in debug binaries
### ✅ Phase 4: Remove Dispatcher Layer from Results Mode
**Status**: COMPLETE (2025-08-22)
**Goal**: Remove intermediate `key_dispatcher` translation layer from Results mode
**Changes Made**:
1. Added all missing key mappings to KeyMapper for Results mode:
- Page navigation (PageUp/PageDown)
- Vim navigation (g/G for top/bottom, H/M/L for viewport)
- Column navigation (0/^/$)
- Help/Debug toggles (F1/?/F5)
- Clear pins (Shift+P)
- History search (Ctrl+R)
- Quit (Ctrl+C)
2. Added `StartHistorySearch` action to Action enum
3. Enhanced `ExitCurrentMode` action to handle different modes properly:
- Results mode: restore query, save position
- Help/Debug modes: return to Results
- Vim search: exit search but stay in Results
4. Removed dispatcher usage from `handle_results_input`:
- Now uses KeyMapper directly for all key mappings
- Commented out entire dispatcher match block
- Action system now handles all Results mode keys
**Result**: All Results mode keys now go through the Action system!
### Phase 5: Remaining Results Mode Keys
**Status**: Not started
**Keys to migrate**:
- **Navigation**:
- `g/G` - Top/bottom
- `H/M/L` - Viewport top/middle/bottom
- `0/$` - First/last column
- **Data Operations**:
- `f/F` - Filter operations
- `/` - Search
- `?` - Column search
- `e/E` - Export operations
- **Column Operations**:
- `p` - Pin column (partially done)
- `H` - Hide column
- `</>` or Shift+Left/Right - Move columns
- **Other**:
- `:` - Jump to row (partially done)
- `Ctrl+E/J` - Export CSV/JSON
- `Ctrl+P/N` - History navigation
### Phase 6: Command Mode Keys
**Status**: Not started
**Currently handled by**: EditorWidget and dispatcher
**Keys to migrate**: All Command mode editing keys
### Phase 7: Other Modes
**Status**: Not started
**Modes**: Help, Debug, History, Search, Filter, etc.
## 🔍 Key Observations
### What's Working Well:
- Action system pattern is clean and extensible
- Centralized action handling reduces coupling
- Key mappings are declarative and easy to understand
### Challenges Found:
1. **Dual-purpose keys**: Some keys have different behaviors based on context (like Shift+N)
2. **Chord handler**: Works outside action system, needs integration strategy
3. **Dispatcher layer**: Still acts as intermediary, should be removed
4. **Mode-specific handling**: Some modes have their own widgets handling keys
### Testing Notes:
- Test all migrated keys in Results mode
- Verify Shift+N toggles row numbers when no search active
- Verify Shift+N navigates search when search is active
- Test viewport/cursor lock operations
- Verify F12 key indicator toggle
- Verify / starts search and jumps to first match
- Verify \ starts column search
- Test n/N navigation after search
## 📅 Next Session Plan
1. **Merge key_migration_v3 to main** after testing
2. **Start Phase 3**: Integrate chord handler with action system
- Option A: Make chord handler return Actions instead of strings
- Option B: Process chords within action system itself
3. **Continue Phase 5**: Migrate remaining Results mode keys in batches
4. **Phase 4**: Remove dispatcher once enough keys are migrated
## 🎯 Goal
Complete migration of all key handling to action system to:
- Reduce coupling in TUI main loop
- Enable better testing of key handling
- Make key bindings configurable
- Simplify debugging of key behavior
## 📝 Notes for Tomorrow
- Branch `sorting_intern_str` contains:
- All Phase 1 keys working through action system
- Fixed Shift+N dual behavior issue
- Fixed / search key (was breaking app)
- / now navigates to first match like vim
- Debug trace system (bonus work)
- Ready for final testing and merge to main
- Next: Phase 3 - Chord handler integration