ObsiViewer/docs/EDITOR_NIMBUS/NIMBUS_EDITOR_FIXES.md

# Nimbus Editor Fixes - Implementation Summary

## 🎯 Objective
Fixed and adapted the Nimbus Editor block component to match the provided screenshots with proper visual styling, ellipsis menu, and Enter key behavior.

## ✅ Changes Implemented

### 1. Block Context Menu Component
**File:** `src/app/editor/components/block/block-context-menu.component.ts` (NEW)

- Created comprehensive context menu with all required options:
  - **Alignment toolbar** (left, center, right, justify)
  - **Comment** - Add comments to blocks
  - **Add block** - Insert new blocks (with submenu)
  - **Convert to** - Transform block types with full submenu:
    - Checklist, Number List, Bullet List
    - Toggle Block, Paragraph, Steps
    - Large/Medium/Small Headings
    - Code, Quote, Hint, Button
    - Collapsible headings
  - **Background color** - Color picker with Tailwind palette
  - **Duplicate** - Clone the block
  - **Copy block** - Copy to clipboard
  - **Lock block** 🔒 - Prevent editing
  - **Copy Link** - Copy block reference
  - **Delete** - Remove block (red highlight)

- Keyboard shortcuts displayed for each action
- Submenu support with hover/click interaction
- Theme-aware styling (light/dark modes)

### 2. Block Host Component Updates
**File:** `src/app/editor/components/block/block-host.component.ts`

**Icon Change:**
- ✅ Replaced 6-dot drag handle with **ellipsis (⋯)** icon
- Positioned absolutely at `-left-8` for proper alignment
- Shows on hover with smooth opacity transition

**Menu Integration:**
- Click handler opens context menu at correct position
- Document-level click listener closes menu
- Menu actions wired to DocumentService methods
- Added `data-block-id` attribute for DOM selection

**Visual Styling:**
- `rounded-2xl` for modern rounded corners
- `py-2 px-3` padding matching screenshots
- Transparent background by default
- Subtle hover state: `bg-surface1/50 dark:bg-gray-800/50`
- Active state: `ring-1 ring-primary/50` (no heavy background)
- Removed aggressive active styling

### 3. Paragraph Block Component
**File:** `src/app/editor/components/block/blocks/paragraph-block.component.ts`

**Enter Key Behavior:**
- ✅ Pressing Enter creates a new block (no newline in same block)
- New block inserted immediately after current
- Focus automatically moves to new block
- Cursor positioned at start of new block

**Backspace Behavior:**
- Delete empty block when Backspace pressed at start
- Prevents orphaned empty blocks

**Visual Styling:**
- `text-base` for proper font size
- `text-neutral-100` for consistent text color
- Placeholder: "Start writing or type '/', '@'"
- Transparent background matching page
- `min-height: 1.5rem` for consistent block height
- `line-height: 1.5` for readability

**Text Display:**
- ✅ No text reversal issues (verified no `reverse()` calls)
- Text displays normally as typed

### 4. Editor Shell Component
**File:** `src/app/editor/components/editor-shell/editor-shell.component.ts`

**Status Indicator:**
- Moved to top of page (above title)
- Smaller text: `text-xs`
- Muted color: `text-neutral-400 dark:text-neutral-500`
- Format: "2 blocks • ✓ Saved"
- Real-time save state updates

**Background:**
- Added `bg-card dark:bg-main` to match app theme
- Consistent with rest of application

**Title Input:**
- Added theme-aware text color
- Proper focus states

### 5. Nimbus Editor Page Component
**File:** `src/app/features/tests/nimbus-editor/nimbus-editor-page.component.ts`

**Removed DaisyUI Classes:**
- Replaced all `bg-base-*` with theme tokens
- Replaced `btn` classes with custom Tailwind
- Replaced `dropdown` with CSS hover menu
- Replaced `kbd` with custom styled elements

**Theme-Aware Styling:**
- Topbar: `bg-surface1 dark:bg-gray-800`
- Footer: `bg-surface1 dark:bg-gray-800`
- Borders: `border-border dark:border-gray-700`
- Text: `text-main dark:text-neutral-100`
- Export menu: Hover-based dropdown
- Clear button: Red accent with transparency

## 🎨 Visual Appearance

### Block Styling
```css
.block-wrapper {
  @apply relative py-2 px-3 rounded-2xl transition-all;
  min-height: 40px;
  background-color: transparent;
}

.block-wrapper:hover {
  @apply bg-surface1/50 dark:bg-gray-800/50;
}

.block-wrapper.active {
  @apply ring-1 ring-primary/50;
}
```

### Ellipsis Menu Handle
```html
<button class="menu-handle opacity-0 group-hover:opacity-100 
               absolute -left-8 top-1/2 -translate-y-1/2 
               p-1.5 rounded hover:bg-surface2">
  <svg><!-- 3 horizontal dots --></svg>
</button>
```

### Paragraph Block
```html
<div contenteditable="true"
     class="w-full bg-transparent text-base text-neutral-100 
            focus:outline-none"
     placeholder="Start writing or type '/', '@'">
</div>
```

## 🧪 Behavior Validation

### ✅ Text Display
- Text appears in correct order (no reversal)
- Typing works normally
- Copy/paste preserves order

### ✅ Ellipsis Menu
- Appears on block hover
- Click opens full context menu
- All menu items functional
- Submenus work correctly
- Keyboard shortcuts displayed

### ✅ Enter Key
- Creates new block below current
- No newline inserted in same block
- Focus moves to new block
- Cursor positioned correctly

### ✅ Block Appearance
- Rounded corners (rounded-2xl)
- Proper padding (px-3 py-2)
- Background matches page
- Hover state visible
- Active state subtle ring

### ✅ Status Indicator
- Shows block count
- Shows save state (Saved/Saving/Error)
- Updates in real-time
- Positioned at top

## 🌓 Theme Compatibility

All components support both light and dark themes:

### Light Theme
- `bg-card` / `bg-surface1` / `bg-surface2`
- `text-main` / `text-text-muted`
- `border-border`

### Dark Theme
- `dark:bg-main` / `dark:bg-gray-800` / `dark:bg-gray-700`
- `dark:text-neutral-100` / `dark:text-neutral-500`
- `dark:border-gray-700`

## 📁 Files Modified

1. ✅ `src/app/editor/components/block/block-context-menu.component.ts` (NEW)
2. ✅ `src/app/editor/components/block/block-host.component.ts`
3. ✅ `src/app/editor/components/block/blocks/paragraph-block.component.ts`
4. ✅ `src/app/editor/components/editor-shell/editor-shell.component.ts`
5. ✅ `src/app/features/tests/nimbus-editor/nimbus-editor-page.component.ts`

## 🚀 Testing Instructions

1. Navigate to **Section Tests > Éditeur Nimbus**
2. Verify text displays correctly (not reversed)
3. Hover over a block - ellipsis (⋯) should appear
4. Click ellipsis - context menu opens with all options
5. Type text and press Enter - new block created below
6. Check status indicator shows "X blocks • ✓ Saved"
7. Test in both light and dark themes
8. Verify block styling matches screenshots

## 🔧 Technical Notes

### Angular 20 Features Used
- Standalone components
- Signals for reactive state
- Control flow syntax (@if, @for)
- Inject function for DI

### Tailwind 3.4
- Custom theme tokens (surface1, surface2, text-muted)
- Dark mode classes
- Opacity modifiers
- Arbitrary values

### No Text Reversal
- Verified no `split('').reverse().join('')` in codebase
- `[textContent]` binding works correctly
- ContentEditable input handled properly

## ✨ Result

The Nimbus Editor now matches the provided screenshots with:
- ⋯ Ellipsis menu icon (not 6 dots)
- Full context menu with submenus
- Enter creates new blocks (one block = one line)
- Proper visual styling (rounded-2xl, correct padding)
- Status indicator at top
- Theme-aware colors
- No text reversal issues