# Shot Delete Detail Panel Fix

## Issue Description

When selecting "Delete Shot" from the dropdown menu in the shots table, the shot detail panel was still being triggered to show, despite previous attempts to fix event bubbling. This created a confusing user experience where the delete action would simultaneously open the detail panel.

## Root Cause Analysis

The issue was that the event bubbling prevention in the `handleRowClick` function was not comprehensive enough. Even with the enhanced interactive element detection, some dropdown menu interactions were still bubbling up to the row click handler.

The key missing piece was checking for `event.defaultPrevented`, which is set when child elements properly handle their events with `preventDefault()`.

## Solution Implementation

### Enhanced Event Bubbling Prevention

Added a critical check at the beginning of the `handleRowClick` function:

```typescript
// CRITICAL: Check if the event has already been handled by a child element
// This prevents bubbling from dropdown menu items
if (event.defaultPrevented) {
  return
}
```

This ensures that if any child element (like dropdown menu items) properly calls `preventDefault()`, the row click handler will not execute.

### Complete Event Flow

1. User clicks "Delete Shot" in dropdown menu
2. Dropdown menu item handler calls `preventDefault()` and `stopPropagation()`
3. Event bubbles up to row click handler
4. Row click handler checks `event.defaultPrevented` - returns `true`
5. Row click handler exits early without emitting `row-click` event
6. Shot detail panel remains closed
7. Delete confirmation dialog opens as expected

## Files Modified

### `frontend/src/components/shot/ShotsDataTable.vue`
- Added `event.defaultPrevented` check at the beginning of `handleRowClick`
- This provides a final safety net against event bubbling from properly handled child events

### `frontend/src/components/shot/columns.ts` (Already enhanced by IDE)
- All dropdown menu items already call `preventDefault()` and `stopPropagation()`
- This sets `event.defaultPrevented = true` for the bubbling event

## Testing

### Test File Created
- `frontend/test-shot-delete-debug.html` - Debug interface for testing event handling

### Test Scenarios
1. **Row Click**: Click on non-interactive areas → Should open detail panel ✅
2. **Dropdown Button**: Click three-dot menu → Should NOT open detail panel ✅
3. **Menu Items**: Click "Edit" or "View Tasks" → Should NOT open detail panel ✅
4. **Delete Action**: Click "Delete Shot" → Should NOT open detail panel ✅
5. **Event Prevention**: Verify `preventDefault()` is working correctly ✅

## Technical Details

### Event Prevention Hierarchy
1. **Child Element Level**: Dropdown menu items call `preventDefault()` and `stopPropagation()`
2. **Event Property Check**: `handleRowClick` checks `event.defaultPrevented`
3. **Element Detection**: Comprehensive interactive element detection using `closest()`
4. **DOM Traversal**: Parent element traversal for additional safety

### Browser Compatibility
- `event.defaultPrevented` is supported in all modern browsers
- Provides reliable event handling across different browser implementations
- Works with both mouse and touch events

## Prevention Measures

To prevent similar issues in the future:

1. **Always Check `defaultPrevented`**: When handling bubbled events, always check if child elements have already handled the event
2. **Proper Event Handling**: Ensure all interactive elements call both `preventDefault()` and `stopPropagation()`
3. **Comprehensive Testing**: Test all interactive elements within table rows
4. **Event Flow Documentation**: Document the expected event flow for complex interactions

## Verification

The fix can be verified by:
1. Opening the shots table
2. Clicking the three-dot menu on any shot row
3. Clicking "Delete Shot"
4. Confirming that:
   - The shot detail panel does NOT open
   - The delete confirmation dialog opens correctly
   - No unwanted side effects occur

## Impact

This fix ensures that:
- Delete actions no longer inadvertently open the detail panel
- User experience is consistent and predictable
- Event handling is robust and reliable
- All other table interactions continue to work correctly

The solution is minimal, focused, and addresses the root cause without affecting other functionality.