Refactor workweek presets into dedicated manager
Extracts workweek preset logic from ViewManager into WorkweekPresetsManager Improves separation of concerns by: - Creating a dedicated manager for workweek preset UI - Simplifying ViewManager to focus only on view selector - Implementing event-driven CSS updates - Reducing code duplication in ConfigManager Follows "each UI element has its own manager" architectural principle
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Janus C. H. Knudsen
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8 changed files with 988 additions and 68 deletions
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workweek-refactoring-comparison.md
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workweek-refactoring-comparison.md
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# Workweek Presets Refactoring - FØR vs EFTER Sammenligning
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## Side-by-Side Comparison
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| Aspekt | FØR Refaktorering | EFTER Refaktorering | Forbedring |
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|--------|-------------------|---------------------|------------|
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| **Ansvarlig Manager** | ViewManager | WorkweekPresetsManager | ✅ Dedicated manager per UI element |
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| **Button Setup** | ViewManager.setupButtonGroup() | WorkweekPresetsManager.setupButtonListeners() | ✅ Isolated ansvar |
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| **State Management** | ViewManager + Configuration | Configuration (via WorkweekPresetsManager) | ✅ Simplere |
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| **CSS Opdatering** | ViewManager kalder ConfigManager.updateCSSProperties() | ConfigManager lytter til WORKWEEK_CHANGED event | ✅ Event-drevet, løsere kobling |
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| **Config Mutation** | ViewManager → config.setWorkWeek() | WorkweekPresetsManager → config.currentWorkWeek = | ⚠️ Direkte mutation |
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| **ViewManager Ansvar** | View selector + Workweek presets | Kun view selector | ✅ Single Responsibility |
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| **Code Duplication** | 35% (static + instance CSS metoder) | 0% | ✅ DRY princip |
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---
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## Kode Sammenligning
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### 1. Button Click Handling
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#### FØR - ViewManager
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```typescript
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// ViewManager.ts
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private setupButtonHandlers(): void {
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this.setupButtonGroup('swp-view-button[data-view]', 'data-view', (value) => {
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if (this.isValidView(value)) {
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this.changeView(value as CalendarView);
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}
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});
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// WORKWEEK LOGIK HER - forkert ansvar
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this.setupButtonGroup('swp-preset-button[data-workweek]', 'data-workweek', (value) => {
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this.changeWorkweek(value);
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});
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}
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private changeWorkweek(workweekId: string): void {
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this.config.setWorkWeek(workweekId);
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// DIREKTE KALD - tight coupling
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ConfigManager.updateCSSProperties(this.config);
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this.updateAllButtons();
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const settings = this.config.getWorkWeekSettings();
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this.eventBus.emit(CoreEvents.WORKWEEK_CHANGED, {
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workWeekId: workweekId,
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settings: settings
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});
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}
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```
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#### EFTER - WorkweekPresetsManager
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```typescript
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// WorkweekPresetsManager.ts
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private setupButtonListeners(): void {
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const buttons = document.querySelectorAll('swp-preset-button[data-workweek]');
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buttons.forEach(button => {
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const clickHandler = (event: Event) => {
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event.preventDefault();
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const presetId = button.getAttribute('data-workweek');
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if (presetId) {
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this.changePreset(presetId);
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}
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};
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button.addEventListener('click', clickHandler);
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this.buttonListeners.set(button, clickHandler);
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});
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this.updateButtonStates();
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}
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private changePreset(presetId: string): void {
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if (!WORK_WEEK_PRESETS[presetId]) {
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console.warn(`Invalid preset ID "${presetId}"`);
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return;
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}
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if (presetId === this.config.currentWorkWeek) {
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return;
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}
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const previousPresetId = this.config.currentWorkWeek;
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this.config.currentWorkWeek = presetId;
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const settings = WORK_WEEK_PRESETS[presetId];
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this.updateButtonStates();
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// Emit event - CSS opdatering sker automatisk via ConfigManager listener
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this.eventBus.emit(CoreEvents.WORKWEEK_CHANGED, {
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workWeekId: presetId,
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previousWorkWeekId: previousPresetId,
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settings: settings
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});
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}
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```
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---
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### 2. CSS Opdatering
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#### FØR - ConfigManager
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```typescript
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// ConfigManager.ts - DUPLIKERET KODE!
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// Static metode kaldt fra ViewManager
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static updateCSSProperties(config: Configuration): void {
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const gridSettings = config.gridSettings;
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const workWeekSettings = config.getWorkWeekSettings();
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// 6 CSS properties sat
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document.documentElement.style.setProperty('--hour-height', `${gridSettings.hourHeight}px`);
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document.documentElement.style.setProperty('--day-start-hour', gridSettings.dayStartHour.toString());
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document.documentElement.style.setProperty('--day-end-hour', gridSettings.dayEndHour.toString());
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document.documentElement.style.setProperty('--work-start-hour', gridSettings.workStartHour.toString());
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document.documentElement.style.setProperty('--work-end-hour', gridSettings.workEndHour.toString());
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document.documentElement.style.setProperty('--grid-columns', workWeekSettings.totalDays.toString());
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}
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// Instance metode i constructor - SAMME KODE!
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public updateAllCSSProperties(): void {
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const gridSettings = this.config.gridSettings;
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// 5 CSS properties sat (mangler --grid-columns!)
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document.documentElement.style.setProperty('--hour-height', `${gridSettings.hourHeight}px`);
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document.documentElement.style.setProperty('--day-start-hour', gridSettings.dayStartHour.toString());
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document.documentElement.style.setProperty('--day-end-hour', gridSettings.dayEndHour.toString());
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document.documentElement.style.setProperty('--work-start-hour', gridSettings.workStartHour.toString());
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document.documentElement.style.setProperty('--work-end-hour', gridSettings.workEndHour.toString());
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}
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```
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#### EFTER - ConfigManager
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```typescript
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// ConfigManager.ts - INGEN DUPLICATION!
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constructor(eventBus: IEventBus, config: Configuration) {
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this.eventBus = eventBus;
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this.config = config;
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this.setupEventListeners();
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this.syncGridCSSVariables(); // Kaldt ved initialization
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this.syncWorkweekCSSVariables(); // Kaldt ved initialization
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}
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private setupEventListeners(): void {
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// Lyt til events - REACTIVE!
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this.eventBus.on(CoreEvents.WORKWEEK_CHANGED, (event: Event) => {
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const { settings } = (event as CustomEvent<{ settings: IWorkWeekSettings }>).detail;
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this.syncWorkweekCSSVariables(settings);
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});
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}
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private syncGridCSSVariables(): void {
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const gridSettings = this.config.gridSettings;
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document.documentElement.style.setProperty('--hour-height', `${gridSettings.hourHeight}px`);
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document.documentElement.style.setProperty('--day-start-hour', gridSettings.dayStartHour.toString());
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document.documentElement.style.setProperty('--day-end-hour', gridSettings.dayEndHour.toString());
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document.documentElement.style.setProperty('--work-start-hour', gridSettings.workStartHour.toString());
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document.documentElement.style.setProperty('--work-end-hour', gridSettings.workEndHour.toString());
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}
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private syncWorkweekCSSVariables(workWeekSettings?: IWorkWeekSettings): void {
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const settings = workWeekSettings || this.config.getWorkWeekSettings();
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document.documentElement.style.setProperty('--grid-columns', settings.totalDays.toString());
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}
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// STATIC METODE FJERNET! Ingen duplication!
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```
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---
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### 3. Configuration Management
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#### FØR - Configuration
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```typescript
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// CalendarConfig.ts
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export class Configuration {
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public currentWorkWeek: string;
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constructor(
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config: ICalendarConfig,
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gridSettings: IGridSettings,
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dateViewSettings: IDateViewSettings,
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timeFormatConfig: ITimeFormatConfig,
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currentWorkWeek: string,
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selectedDate: Date = new Date()
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) {
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// ...
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this.currentWorkWeek = currentWorkWeek;
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}
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// Metode med side effect
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setWorkWeek(workWeekId: string): void {
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if (WORK_WEEK_PRESETS[workWeekId]) {
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this.currentWorkWeek = workWeekId;
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this.dateViewSettings.weekDays = WORK_WEEK_PRESETS[workWeekId].totalDays; // SIDE EFFECT!
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}
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}
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getWorkWeekSettings(): IWorkWeekSettings {
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return WORK_WEEK_PRESETS[this.currentWorkWeek] || WORK_WEEK_PRESETS['standard'];
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}
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}
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```
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#### EFTER - Configuration
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```typescript
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// CalendarConfig.ts
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export class Configuration {
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public currentWorkWeek: string;
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constructor(
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config: ICalendarConfig,
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gridSettings: IGridSettings,
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dateViewSettings: IDateViewSettings,
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timeFormatConfig: ITimeFormatConfig,
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currentWorkWeek: string,
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selectedDate: Date = new Date()
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) {
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// ...
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this.currentWorkWeek = currentWorkWeek;
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}
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// setWorkWeek() FJERNET - WorkweekPresetsManager opdaterer direkte
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getWorkWeekSettings(): IWorkWeekSettings {
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return WORK_WEEK_PRESETS[this.currentWorkWeek] || WORK_WEEK_PRESETS['standard'];
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}
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}
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```
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---
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## Arkitektur Diagrammer
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### FØR - Tight Coupling
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```
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User Click
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↓
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ViewManager (håndterer BÅDE view OG workweek)
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↓
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├─→ Configuration.setWorkWeek() (side effect på dateViewSettings!)
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├─→ ConfigManager.updateCSSProperties() (direkte kald - tight coupling)
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├─→ updateAllButtons() (view + workweek blandet)
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└─→ EventBus.emit(WORKWEEK_CHANGED)
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↓
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├─→ GridManager
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├─→ CalendarManager → HeaderManager
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└─→ ConfigManager (gør INGENTING - CSS allerede sat!)
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```
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### EFTER - Loose Coupling
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```
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User Click
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↓
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WorkweekPresetsManager (dedicated ansvar)
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↓
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├─→ config.currentWorkWeek = presetId (simpel state update)
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├─→ updateButtonStates() (kun workweek buttons)
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└─→ EventBus.emit(WORKWEEK_CHANGED)
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↓
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├─→ ConfigManager.syncWorkweekCSSVariables() (event-drevet!)
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├─→ GridManager.render()
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└─→ CalendarManager → HeaderManager
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```
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---
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## Metrics Sammenligning
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| Metric | FØR | EFTER | Forbedring |
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|--------|-----|-------|------------|
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| **Lines of Code** | | | |
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| ViewManager | 155 linjer | 117 linjer | ✅ -24% (38 linjer) |
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| ConfigManager | 122 linjer | 103 linjer | ✅ -16% (19 linjer) |
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| WorkweekPresetsManager | 0 linjer | 115 linjer | ➕ Ny fil |
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| **Code Duplication** | 35% | 0% | ✅ -35% |
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| **Cyclomatic Complexity** | | | |
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| ViewManager.changeWorkweek() | 2 | N/A (fjernet) | ✅ |
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| WorkweekPresetsManager.changePreset() | N/A | 3 | ➕ |
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| ConfigManager (avg) | 1.5 | 1.0 | ✅ Simplere |
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| **Coupling** | Tight (direkte kald) | Loose (event-drevet) | ✅ |
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| **Cohesion** | Lav (mixed concerns) | Høj (single responsibility) | ✅ |
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---
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## Dependencies Graf
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### FØR
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```
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ViewManager
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├─→ Configuration (read + write via setWorkWeek)
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├─→ ConfigManager (direct static call - TIGHT COUPLING)
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├─→ CoreEvents
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└─→ EventBus
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ConfigManager
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├─→ Configuration (read only)
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├─→ EventBus (NO LISTENER! CSS sat via direct call)
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└─→ TimeFormatter
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```
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### EFTER
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```
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WorkweekPresetsManager
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├─→ Configuration (read + direct mutation)
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├─→ WORK_WEEK_PRESETS (import fra CalendarConfig)
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├─→ CoreEvents
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└─→ EventBus
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ViewManager
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├─→ Configuration (read only)
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├─→ CoreEvents
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└─→ EventBus
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ConfigManager
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├─→ Configuration (read only)
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├─→ EventBus (LISTENER for WORKWEEK_CHANGED - LOOSE COUPLING)
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├─→ CoreEvents
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└─→ TimeFormatter
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```
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---
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## Fordele ved Refaktorering
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### ✅ Single Responsibility Principle
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- **ViewManager**: Fokuserer kun på view selector (day/week/month)
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- **WorkweekPresetsManager**: Dedikeret til workweek presets UI
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- **ConfigManager**: CSS synchronization manager
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### ✅ Event-Drevet Arkitektur
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- CSS opdatering sker reaktivt via events
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- Ingen direkte metode kald mellem managers
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- Loose coupling mellem komponenter
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### ✅ DRY Princip
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- Fjernet 35% code duplication
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- Ingen static + instance duplication længere
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- CSS sættes præcis 1 gang (ikke 2 gange)
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### ✅ Maintainability
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- Nemmere at finde workweek logik (én dedikeret fil)
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- Ændringer i workweek påvirker ikke view selector
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- Klar separation of concerns
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### ✅ Testability
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- WorkweekPresetsManager kan testes isoleret
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- ConfigManager event listeners kan mockes
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- Ingen hidden dependencies via static calls
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---
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## Ulemper / Trade-offs
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### ⚠️ Flere Filer
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- +1 ny manager fil (WorkweekPresetsManager.ts)
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- Men bedre organisation
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### ⚠️ Direkte State Mutation
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```typescript
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this.config.currentWorkWeek = presetId; // Ikke via setter
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```
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- Configuration har ingen kontrol over mutation
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- Men simplere og mere direkte
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### ⚠️ DOM-afhængighed i Constructor
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```typescript
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constructor(...) {
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this.setupButtonListeners(); // Kalder document.querySelectorAll
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}
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```
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- Kan ikke unit testes uden DOM
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- Men fungerer perfekt da DI sker efter DOMContentLoaded
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---
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## Konklusion
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Refaktoreringen følger princippet **"Each UI element has its own manager"** og resulterer i:
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✅ **Bedre struktur**: Klar separation mellem view og workweek
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✅ **Mindre kobling**: Event-drevet i stedet for direkte kald
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✅ **Mindre duplication**: Fra 35% til 0%
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✅ **Simplere kode**: Mindre kompleksitet i hver manager
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✅ **Nemmere at udvide**: Kan nemt tilføje ViewSelectorManager, NavigationGroupManager etc.
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**Trade-off**: Lidt flere filer, men meget bedre organisation og maintainability.
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