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:

{
  "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

   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

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Author: Claude Code Session: 2025-11-28