Enables all-day event conversion on column hover

Allows users to convert all-day events to timed events by dragging them over a day column.

This implementation adds logic to the DragDropManager to detect when an all-day event is dragged over a column.
It then emits a new event, 'drag:mouseenter-column', carrying the event data and target column information.

The event rendering service handles this event.

src/elements/SwpEventElement.ts

@@ -289,46 +289,6 @@ export class SwpEventElement extends BaseSwpEventElement {
     };
   }
 
-  /**
-   * Factory method to convert an all-day HTML element to a timed SwpEventElement
-   */
-  public static fromAllDayElement(allDayElement: HTMLElement): SwpEventElement {
-    const eventId = allDayElement.dataset.eventId || '';
-    const title = allDayElement.dataset.title || allDayElement.textContent || 'Untitled';
-    const type = allDayElement.dataset.type || 'work';
-    const startStr = allDayElement.dataset.start;
-    const endStr = allDayElement.dataset.end;
-    const durationStr = allDayElement.dataset.duration;
-
-    if (!startStr || !endStr) {
-      throw new Error('All-day element missing start/end dates');
-    }
-
-    const originalStart = new Date(startStr);
-    const duration = durationStr ? parseInt(durationStr) : 60;
-
-    const now = new Date();
-    const startDate = new Date(originalStart);
-    startDate.setHours(now.getHours() || 9, now.getMinutes() || 0, 0, 0);
-
-    const endDate = new Date(startDate);
-    endDate.setMinutes(endDate.getMinutes() + duration);
-
-    const calendarEvent: CalendarEvent = {
-      id: eventId,
-      title: title,
-      start: startDate,
-      end: endDate,
-      type: type,
-      allDay: false,
-      syncStatus: 'synced',
-      metadata: {
-        duration: duration.toString()
-      }
-    };
-
-    return SwpEventElement.fromCalendarEvent(calendarEvent);
-  }
 }
 
 /**

src/managers/DragDropManager.ts

@@ -14,6 +14,7 @@ import {
   DragEndEventPayload,
   DragMouseEnterHeaderEventPayload,
   DragMouseLeaveHeaderEventPayload,
+  DragMouseEnterColumnEventPayload,
   DragColumnChangeEventPayload
 } from '../types/EventTypes';
 import { MousePosition } from '../types/DragDropTypes';
@@ -116,6 +117,8 @@ export class DragDropManager {
         const target = e.target as HTMLElement;
         if (target.closest('swp-calendar-header')) {
           this.handleHeaderMouseEnter(e as MouseEvent);
+        } else if (target.closest('swp-day-column')) {
+          this.handleColumnMouseEnter(e as MouseEvent);
         } else if (target.closest('swp-event')) {
           // Entered an event - activate hover tracking and set color
           const eventElement = target.closest<HTMLElement>('swp-event');
@@ -652,6 +655,46 @@ export class DragDropManager {
     }
   }
 
+  /**
+   * Handle mouse enter on day column - for converting all-day to timed events
+   */
+  private handleColumnMouseEnter(event: MouseEvent): void {
+    // Only handle if we're dragging an all-day event
+    if (!this.isDragStarted || !this.draggedClone || !this.draggedClone.hasAttribute('data-allday')) {
+      return;
+    }
+
+    console.log('🎯 DragDropManager: Mouse entered day column');
+
+    const position: MousePosition = { x: event.clientX, y: event.clientY };
+    const targetColumn = ColumnDetectionUtils.getColumnBounds(position);
+
+    if (!targetColumn) {
+      console.warn("No column detected when entering day column");
+      return;
+    }
+
+    // Calculate snapped Y position
+    const snappedY = this.calculateSnapPosition(position.y, targetColumn);
+
+    // Extract CalendarEvent from the dragged clone
+    const calendarEvent = SwpEventElement.extractCalendarEventFromElement(this.draggedClone);
+
+    const dragMouseEnterPayload: DragMouseEnterColumnEventPayload = {
+      targetColumn: targetColumn,
+      mousePosition: position,
+      snappedY: snappedY,
+      originalElement: this.draggedElement,
+      draggedClone: this.draggedClone,
+      calendarEvent: calendarEvent,
+      // Delegate pattern - allows EventRenderer to replace the clone
+      replaceClone: (newClone: HTMLElement) => {
+        this.draggedClone = newClone;
+      }
+    };
+    this.eventBus.emit('drag:mouseenter-column', dragMouseEnterPayload);
+  }
+
   /**
    * Handle mouse leave from calendar header - simplified using native events
    */

src/managers/HeaderManager.ts

@@ -36,7 +36,7 @@ export class HeaderManager {
    * Get cached calendar header element
    */
   private getCalendarHeader(): HTMLElement | null {
-      return document.querySelector('swp-calendar-header');
+    return document.querySelector('swp-calendar-header');
   }
 
   /**
@@ -71,13 +71,6 @@ export class HeaderManager {
         originalElement: !!originalElement,
         cloneElement: !!cloneElement
       });
-      
-      eventBus.emit('header:mouseleave', {
-        element: this.getCalendarHeader(),
-        targetDate,
-        originalElement,
-        cloneElement
-      });
     };
 
     // Listen for drag events from DragDropManager
@@ -117,7 +110,7 @@ export class HeaderManager {
     const calendarHeader = this.getOrCreateCalendarHeader();
     if (!calendarHeader) return;
 
-       // Clear existing content
+    // Clear existing content
     calendarHeader.innerHTML = '';
 
     // Render new header content

src/renderers/EventRendererManager.ts

@@ -88,17 +88,6 @@ export class EventRenderingService {
         // Handle all drag events and delegate to appropriate renderer
         this.setupDragEventListeners();
 
-        // Listen for conversion from all-day event to time event
-        this.eventBus.on('drag:convert-to-time_event', (event: Event) => {
-            const { draggedElement, mousePosition, column } = (event as CustomEvent).detail;
-            console.log('🔄 EventRendererManager: Received drag:convert-to-time_event', {
-                draggedElement: draggedElement?.dataset.eventId,
-                mousePosition,
-                column
-            });
-            this.handleConvertToTimeEvent(draggedElement, mousePosition, column);
-        });
-
     }
 
 
@@ -302,59 +291,6 @@ export class EventRenderingService {
         });
     }
    
-    /**
-     * Handle conversion from all-day event to time event
-     */
-    private handleConvertToTimeEvent(draggedElement: HTMLElement, mousePosition: { x: number; y: number }, column: string): void {
-        // Use the provided draggedElement directly
-        const allDayClone = draggedElement;
-        const draggedEventId = draggedElement?.dataset.eventId?.replace('clone-', '') || '';
-
-
-        // Use SwpEventElement factory to create day event from all-day event
-        const dayElement = SwpEventElement.fromAllDayElement(allDayClone as HTMLElement);
-
-        // Remove the all-day clone - it's no longer needed since we're converting to day event
-        allDayClone.remove();
-
-        // Set clone ID
-        dayElement.dataset.eventId = `clone-${draggedEventId}`;
-
-        // Find target column
-        const columnElement = document.querySelector(`swp-day-column[data-date="${column}"]`);
-        if (!columnElement) {
-            console.warn('EventRendererManager: Target column not found', { column });
-            return;
-        }
-
-        // Find events layer in the column
-        const eventsLayer = columnElement.querySelector('swp-events-layer');
-        if (!eventsLayer) {
-            console.warn('EventRendererManager: Events layer not found in column');
-            return;
-        }
-
-        // Add to events layer
-        eventsLayer.appendChild(dayElement);
-
-        // Position based on mouse Y coordinate
-        const columnRect = columnElement.getBoundingClientRect();
-        const relativeY = Math.max(0, mousePosition.y - columnRect.top);
-        dayElement.style.top = `${relativeY}px`;
-
-        // Set drag styling
-        dayElement.style.zIndex = '1000';
-        dayElement.style.cursor = 'grabbing';
-        dayElement.style.opacity = '';
-        dayElement.style.transform = '';
-
-        console.log('✅ EventRendererManager: Converted all-day event to time event', {
-            draggedEventId,
-            column,
-            mousePosition,
-            relativeY
-        });
-    }
 
     /**
      * Re-render affected columns after drag to recalculate stacking/grouping

src/types/EventTypes.ts

@@ -67,6 +67,18 @@ export interface DragMouseLeaveHeaderEventPayload {
   draggedClone: HTMLElement| null;
 }
 
+// Drag mouse enter column event payload
+export interface DragMouseEnterColumnEventPayload {
+  targetColumn: ColumnBounds;
+  mousePosition: MousePosition;
+  snappedY: number;
+  originalElement: HTMLElement | null;
+  draggedClone: HTMLElement;
+  calendarEvent: CalendarEvent;
+  // Delegate pattern - allows subscriber to replace the dragged clone
+  replaceClone: (newClone: HTMLElement) => void;
+}
+
 // Drag column change event payload
 export interface DragColumnChangeEventPayload {
   originalElement: HTMLElement;