GroveEngine/docs/UI_MODULE_PHASE6_PROGRESS.md

# UIModule Phase 6 - Progress Report

## Date
2025-11-28

## Status: Phase 6 Core Implementation Complete ✅

### Completed Tasks

#### 1. UITextInput Widget (✅ Complete)
**Files Created**:
- `modules/UIModule/Widgets/UITextInput.h` - Header avec toutes les fonctionnalités
- `modules/UIModule/Widgets/UITextInput.cpp` - Implémentation complète

**Features Implemented**:
- ✅ Text input field with cursor
- ✅ Cursor blinking animation (500ms interval)
- ✅ Keyboard input handling:
  - Printable characters insertion
  - Backspace/Delete
  - Arrow keys (Left/Right)
  - Home/End
  - Enter (submit)
- ✅ Input filtering:
  - None (default)
  - Alphanumeric
  - Numeric (with `-` support)
  - Float (numbers + `.` + `-`)
  - NoSpaces
- ✅ Text properties:
  - Max length
  - Placeholder text
  - Password mode (masking with `*`)
- ✅ Horizontal scroll for long text
- ✅ Focus states (Normal, Focused, Disabled)
- ✅ Styling system per state

#### 2. Focus Management (✅ Complete)
**Files Modified**:
- `modules/UIModule/UIModule.cpp` - Added focus handling

**Features**:
- ✅ Click to focus text input
- ✅ Focus state tracking in UIContext
- ✅ Automatic focus loss on previous widget
- ✅ Keyboard event routing to focused widget
- ✅ Events published:
  - `ui:focus_gained` → {widgetId}
  - `ui:focus_lost` → {widgetId}
  - `ui:text_changed` → {widgetId, text}
  - `ui:text_submit` → {widgetId, text} (on Enter)

#### 3. UITree Factory Registration (✅ Complete)
**Files Modified**:
- `modules/UIModule/Core/UITree.cpp` - Added textinput factory

**JSON Configuration Support**:
```json
{
  "type": "textinput",
  "id": "username_input",
  "text": "",
  "placeholder": "Enter username...",
  "maxLength": 20,
  "filter": "alphanumeric",
  "passwordMode": false,
  "onSubmit": "login:username",
  "style": {
    "bgColor": "0x222222FF",
    "textColor": "0xFFFFFFFF",
    "borderColor": "0x666666FF",
    "focusBorderColor": "0x4488FFFF",
    "fontSize": 16.0
  }
}
```

### Remaining Tasks for Phase 6 Complete

#### High Priority
1. **Create Test Visual** (`test_27_ui_textinput.cpp`)
   - SDL window setup
   - Load UIModule + BgfxRenderer
   - JSON layout with 4+ text inputs:
     - Normal text input
     - Password input
     - Numeric only
     - Alphanumeric with maxLength
   - Event logging (text_changed, text_submit)

2. **Create JSON Layout** (`assets/ui/test_textinput.json`)
   - Vertical layout with multiple inputs
   - Labels for each input
   - Submit button

3. **Build & Test**
   ```bash
   cmake -DGROVE_BUILD_UI_MODULE=ON -DGROVE_BUILD_BGFX_RENDERER=ON -B build-bgfx
   cmake --build build-bgfx --target UIModule -j4
   cmake --build build-bgfx --target test_27_ui_textinput -j4
   cd build-bgfx/tests
   ./test_27_ui_textinput
   ```

#### Medium Priority
4. **Add CMake Target**
   - Add test_27_ui_textinput to tests/CMakeLists.txt

5. **Documentation**
   - Create `docs/UI_MODULE_PHASE6_COMPLETE.md`
   - Usage examples
   - Event flow diagrams

### Known Limitations & TODOs

#### Text Input Limitations
- ❌ No text selection (mouse drag)
- ❌ No copy/paste (Ctrl+C/V)
- ❌ No click-to-position cursor
- ❌ Tab navigation between inputs
- ❌ Ctrl modifier not tracked in UIContext

#### Rendering Limitations
- ⚠️ Character width is approximated (CHAR_WIDTH = 8.0f)
  - Real solution: Add `measureText()` to UIRenderer
- ⚠️ Border rendered as simple line
  - Need proper border rendering in UIRenderer

#### Cursor Limitations
- Cursor positioning is approximate
- No smooth cursor movement animation

### Architecture Quality

✅ **Follows All Patterns**:
- Inherits from UIWidget
- Communication via IIO pub/sub
- JSON factory registration
- Hot-reload ready (state in member vars)
- Style system integration

✅ **Code Quality**:
- Clean separation of concerns
- Clear method names
- Documented public API
- Follows existing widget patterns (UIButton, UISlider)

### Performance Notes

- Cursor blink: Simple timer, no performance impact
- Text filtering: O(1) character check
- Scroll offset: Updated only on cursor move
- No allocations during typing (string ops reuse capacity)

### Next Steps After Phase 6

Once test is created and passing:

1. **Phase 7.1: UIScrollPanel**
   - Scrollable container
   - Mouse wheel support
   - Scrollbar rendering
   - Content clipping

2. **Phase 7.2: Tooltips**
   - Hover delay (~500ms)
   - Smart positioning
   - Style configuration

3. **Phase 7.3+: Optional Advanced Features**
   - Animations
   - Data binding
   - Drag & drop

### Files Summary

**Created** (2 files):
- `modules/UIModule/Widgets/UITextInput.h`
- `modules/UIModule/Widgets/UITextInput.cpp`

**Modified** (2 files):
- `modules/UIModule/UIModule.cpp` (added focus + keyboard routing)
- `modules/UIModule/Core/UITree.cpp` (added textinput factory)

**To Create** (2 files):
- `tests/visual/test_27_ui_textinput.cpp`
- `assets/ui/test_textinput.json`

### Estimated Completion Time

- Test creation: 30-60 min
- Testing & fixes: 30 min
- Documentation: 30 min

**Total Phase 6**: ~2-3 hours remaining

---

**Author**: Claude Code
**Session**: 2025-11-28