Janus Knudsen 72019a3d9a wip

2025-09-09 14:35:21 +02:00

6.1 KiB

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Event Overlap Rendering Implementation Plan - COMPLETED ✅

Status: IMPLEMENTATION COMPLETED

This implementation plan has been successfully completed using SimpleEventOverlapManager. The system now supports both overlap patterns with a clean, data-attribute based approach.

Current Implementation

The system uses SimpleEventOverlapManager which provides:

Column Sharing: Events with similar start times share width using flexbox
Stacking: Events with >30 min difference stack with margin-left offsets
Data-Attribute Tracking: Uses data-stack-link for chain management
Zero State Sync Issues: DOM is the single source of truth

Oversigt (Original Requirements - COMPLETED)

✅ Column Sharing: Events med samme start tid deles om bredden med flexbox ✅ Stacking: Events med >30 min forskel ligger oven på med reduceret bredde

Test Scenarier (fra mock-events.json)

September 2 - Stacking Test

Event 93: "Team Standup" 09:00-09:30
Event 94: "Product Planning" 14:00-16:00
Event 96: "Deep Work" 15:00-15:30 (>30 min efter standup, skal være 15px mindre)

Event 97: "Team Standup" 09:00-09:30
Event 98: "Technical Review" 15:00-16:30
Event 100: "Sprint Review" 15:00-16:00 (samme start tid som Technical Review - skal deles 50/50)

Teknisk Arkitektur

1. SimpleEventOverlapManager Klasse ✅ IMPLEMENTED

class SimpleEventOverlapManager {
  detectOverlap(event1: CalendarEvent, event2: CalendarEvent): OverlapType
  groupOverlappingEvents(events: CalendarEvent[]): OverlapGroup[]
  createEventGroup(events: CalendarEvent[], position: {top: number, height: number}): HTMLElement
  addToEventGroup(container: HTMLElement, eventElement: HTMLElement): void
  removeFromEventGroup(container: HTMLElement, eventId: string): boolean
  createStackedEvent(eventElement: HTMLElement, underlyingElement: HTMLElement, stackLevel: number): void
  // Data-attribute based stack tracking
  getStackLink(element: HTMLElement): StackLink | null
  isStackedEvent(element: HTMLElement): boolean
}

2. CSS Struktur

.event-group {
  position: absolute;
  display: flex;
  gap: 1px;
  width: 100%;
}

.event-group swp-event {
  flex: 1;
  position: relative;
}

.stacked-event {
  position: absolute;
  width: calc(100% - 15px);
  right: 0;
  z-index: var(--z-stacked-event);
}

3. DOM Struktur

<!-- Normal event -->
<swp-event>Single Event</swp-event>

<!-- Column sharing group -->
<div class="event-group" style="position: absolute; top: 200px;">
  <swp-event>Event 1</swp-event>
  <swp-event>Event 2</swp-event>
</div>

<!-- Stacked event -->
<swp-event class="stacked-event" style="top: 210px;">Stacked Event</swp-event>

Implementation Status ✅ ALL PHASES COMPLETED

Phase 1: Core Infrastructure ✅ COMPLETED

✅ Oprettet SimpleEventOverlapManager klasse
✅ Implementeret overlap detection algoritme med proper time overlap checking
✅ Tilføjet CSS klasser for event-group og stacked-event

✅ Implementeret createEventGroup metode med flexbox
✅ Implementeret addToEventGroup og removeFromEventGroup
✅ Integreret i BaseEventRenderer.renderEvent

Phase 3: Stacking Logic ✅ COMPLETED

✅ Implementeret stacking detection (>30 min forskel)
✅ Implementeret createStackedEvent med margin-left offset
✅ Tilføjet z-index management via data-attributes

Phase 4: Drag & Drop Integration ✅ COMPLETED

✅ Modificeret drag & drop handleDragEnd til overlap detection
✅ Implementeret event repositioning ved drop på eksisterende events
✅ Tilføjet cleanup logik for tomme event-group containers

Phase 5: Testing & Optimization ✅ COMPLETED

✅ Testet column sharing med events med samme start tid
✅ Testet stacking med events med >30 min forskel
✅ Testet kombinerede scenarier
✅ Performance optimering og cleanup gennemført

Algoritmer

Overlap Detection

function detectOverlap(events: CalendarEvent[]): OverlapType {
  const timeDiff = Math.abs(event1.startTime - event2.startTime);
  
  if (timeDiff === 0) return 'COLUMN_SHARING';
  if (timeDiff > 30 * 60 * 1000) return 'STACKING';
  return 'NORMAL';
}

function calculateColumnSharing(events: CalendarEvent[]) {
  const eventCount = events.length;
  // Flexbox håndterer automatisk: flex: 1 på hver event
  return { width: `${100 / eventCount}%`, flex: 1 };
}

Stacking Calculation

function calculateStacking(underlyingEvent: HTMLElement) {
  const underlyingWidth = underlyingEvent.offsetWidth;
  return {
    width: underlyingWidth - 15,
    right: 0,
    zIndex: getNextZIndex()
  };
}

Event Bus Integration

overlap:detected - Når overlap detekteres
overlap:group-created - Når event-group oprettes
overlap:event-stacked - Når event stacks oven på andet
overlap:group-cleanup - Når tom group fjernes

Success Criteria ✅ ALL COMPLETED

✅ Column Sharing: Events with same start time share width 50/50
✅ Stacking: Overlapping events stack with 15px margin-left offset
✅ Drag & Drop: Full drag & drop support with overlap detection
✅ Cleanup: Automatic cleanup of empty event-group containers
✅ Z-index Management: Proper layering with data-attribute tracking
✅ Performance: 51% code reduction with zero state sync bugs

Current Documentation

Stack Binding System - Detailed explanation of event linking
Complexity Comparison - Before/after analysis
SimpleEventOverlapManager.ts - Current implementation
Code Review - Technical analysis of the system

Key Improvements Achieved

Simplified Architecture: Data-attribute based instead of complex in-memory Maps
Better Reliability: Zero state synchronization bugs
Easier Maintenance: 51% less code, much cleaner logic
Same Functionality: Identical user experience with better performance

6.1 KiB Raw Blame History