import { CoreEvents } from '../constants/CoreEvents';
/**
 * NavigationButtonsManager - Manages navigation button UI and state
 *
 * RESPONSIBILITY:
 * ===============
 * This manager owns all logic related to the <swp-nav-group> UI element.
 * It follows the principle that each functional UI element has its own manager.
 *
 * RESPONSIBILITIES:
 * - Handles button clicks on swp-nav-button elements
 * - Validates navigation actions (prev, next, today)
 * - Emits NAV_BUTTON_CLICKED events
 * - Manages button UI listeners
 *
 * EVENT FLOW:
 * ===========
 * User clicks button → validateAction() → emit event → NavigationManager handles navigation
 *
 * SUBSCRIBERS:
 * ============
 * - NavigationManager: Performs actual navigation logic (animations, grid updates, week calculations)
 */
export class NavigationButtonsManager {
    constructor(eventBus) {
        this.buttonListeners = new Map();
        this.eventBus = eventBus;
        this.setupButtonListeners();
    }
    /**
     * Setup click listeners on all navigation buttons
     */
    setupButtonListeners() {
        const buttons = document.querySelectorAll('swp-nav-button[data-action]');
        buttons.forEach(button => {
            const clickHandler = (event) => {
                event.preventDefault();
                const action = button.getAttribute('data-action');
                if (action && this.isValidAction(action)) {
                    this.handleNavigation(action);
                }
            };
            button.addEventListener('click', clickHandler);
            this.buttonListeners.set(button, clickHandler);
        });
    }
    /**
     * Handle navigation action
     */
    handleNavigation(action) {
        // Emit navigation button clicked event
        this.eventBus.emit(CoreEvents.NAV_BUTTON_CLICKED, {
            action: action
        });
    }
    /**
     * Validate if string is a valid navigation action
     */
    isValidAction(action) {
        return ['prev', 'next', 'today'].includes(action);
    }
}
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