Calendar/wwwroot/js/renderers/GridRenderer.d.ts

import { Configuration } from '../configurations/CalendarConfig';
import { CalendarView, ICalendarEvent } from '../types/CalendarTypes';
import { IColumnRenderer } from './ColumnRenderer';
import { DateService } from '../utils/DateService';
import { WorkHoursManager } from '../managers/WorkHoursManager';
/**
 * GridRenderer - Centralized DOM rendering for calendar grid structure
 *
 * ARCHITECTURE OVERVIEW:
 * =====================
 * GridRenderer is responsible for creating and managing the complete DOM structure
 * of the calendar grid. It follows the Strategy Pattern by delegating specific
 * rendering tasks to specialized renderers (DateHeaderRenderer, ColumnRenderer).
 *
 * RESPONSIBILITY HIERARCHY:
 * ========================
 * GridRenderer (this file)
 * ├─ Creates overall grid skeleton
 * ├─ Manages time axis (hour markers)
 * └─ Delegates to specialized renderers:
 *    ├─ DateHeaderRenderer → Renders date headers
 *    └─ ColumnRenderer → Renders day columns
 *
 * DOM STRUCTURE CREATED:
 * =====================
 * <swp-calendar-container>
 *   <swp-header-spacer />                    ← GridRenderer
 *   <swp-time-axis>                          ← GridRenderer
 *     <swp-hour-marker>00:00</...>           ← GridRenderer (iterates hours)
 *   </swp-time-axis>
 *   <swp-grid-container>                     ← GridRenderer
 *     <swp-calendar-header>                  ← GridRenderer creates container
 *       <swp-day-header />                   ← DateHeaderRenderer (iterates dates)
 *     </swp-calendar-header>
 *     <swp-scrollable-content>               ← GridRenderer
 *       <swp-time-grid>                      ← GridRenderer
 *         <swp-grid-lines />                 ← GridRenderer
 *         <swp-day-columns>                  ← GridRenderer creates container
 *           <swp-day-column />               ← ColumnRenderer (iterates dates)
 *         </swp-day-columns>
 *       </swp-time-grid>
 *     </swp-scrollable-content>
 *   </swp-grid-container>
 * </swp-calendar-container>
 *
 * RENDERING FLOW:
 * ==============
 * 1. renderGrid() - Entry point called by GridManager
 *    ├─ First render: createCompleteGridStructure()
 *    └─ Updates: updateGridContent()
 *
 * 2. createCompleteGridStructure()
 *    ├─ Creates header spacer
 *    ├─ Creates time axis (calls createOptimizedTimeAxis)
 *    └─ Creates grid container (calls createOptimizedGridContainer)
 *
 * 3. createOptimizedGridContainer()
 *    ├─ Creates calendar header container
 *    ├─ Creates scrollable content structure
 *    └─ Creates column container (calls renderColumnContainer)
 *
 * 4. renderColumnContainer()
 *    └─ Delegates to ColumnRenderer.render()
 *       └─ ColumnRenderer iterates dates and creates columns
 *
 * OPTIMIZATION STRATEGY:
 * =====================
 * - Caches DOM references (cachedGridContainer, cachedTimeAxis)
 * - Uses DocumentFragment for batch DOM insertions
 * - Only updates changed content on re-renders
 * - Delegates specialized tasks to strategy renderers
 *
 * USAGE EXAMPLE:
 * =============
 * const gridRenderer = new GridRenderer(columnRenderer, dateService, config);
 * gridRenderer.renderGrid(containerElement, new Date(), 'week');
 */
export declare class GridRenderer {
    private cachedGridContainer;
    private cachedTimeAxis;
    private dateService;
    private columnRenderer;
    private config;
    private workHoursManager;
    constructor(columnRenderer: IColumnRenderer, dateService: DateService, config: Configuration, workHoursManager: WorkHoursManager);
    /**
     * Main entry point for rendering the complete calendar grid
     *
     * This method decides between full render (first time) or optimized update.
     * It caches the grid reference for performance.
     *
     * @param grid - Container element where grid will be rendered
     * @param currentDate - Base date for the current view (e.g., any date in the week)
     * @param view - Calendar view type (day/week/month)
     * @param dates - Array of dates to render as columns
     * @param events - All events for the period
     */
    renderGrid(grid: HTMLElement, currentDate: Date, view?: CalendarView, dates?: Date[], events?: ICalendarEvent[]): void;
    /**
     * Creates the complete grid structure from scratch
     *
     * Uses DocumentFragment for optimal performance by minimizing reflows.
     * Creates all child elements in memory first, then appends everything at once.
     *
     * Structure created:
     * 1. Header spacer (placeholder for alignment)
     * 2. Time axis (hour markers 00:00-23:00)
     * 3. Grid container (header + scrollable content)
     *
     * @param grid - Parent container
     * @param currentDate - Current view date
     * @param view - View type
     * @param dates - Array of dates to render
     */
    private createCompleteGridStructure;
    /**
     * Creates the time axis with hour markers
     *
     * Iterates from dayStartHour to dayEndHour (configured in GridSettings).
     * Each marker shows the hour in the configured time format.
     *
     * @returns Time axis element with all hour markers
     */
    private createOptimizedTimeAxis;
    /**
     * Creates the main grid container with header and columns
     *
     * This is the scrollable area containing:
     * - Calendar header (dates/resources) - created here, populated by DateHeaderRenderer
     * - Time grid (grid lines + day columns) - structure created here
     * - Column container - created here, populated by ColumnRenderer
     *
     * @param currentDate - Current view date
     * @param view - View type
     * @param dates - Array of dates to render
     * @returns Complete grid container element
     */
    private createOptimizedGridContainer;
    /**
     * Renders columns by iterating through dates
     *
     * GridRenderer creates column structure with work hours styling.
     * Event rendering is handled by EventRenderingService listening to GRID_RENDERED.
     *
     * @param columnContainer - Empty container to populate
     * @param dates - Array of dates to render
     * @param events - All events for the period (passed through, not used here)
     */
    private renderColumnContainer;
    /**
     * Apply work hours styling to a column
     */
    private applyWorkHoursStyling;
    /**
     * Optimized update of grid content without full rebuild
     *
     * Only updates the column container content, leaving the structure intact.
     * This is much faster than recreating the entire grid.
     *
     * @param grid - Existing grid element
     * @param currentDate - New view date
     * @param view - View type
     * @param dates - Array of dates to render
     * @param events - All events for the period
     */
    private updateGridContent;
    /**
     * Creates a new grid for slide animations during navigation
     *
     * Used by NavigationManager for smooth week-to-week transitions.
     * Creates a complete grid positioned absolutely for animation.
     *
     * Note: Positioning is handled by Animation API, not here.
     *
     * @param parentContainer - Container for the new grid
     * @param weekStart - Start date of the new week
     * @returns New grid element ready for animation
     */
    createNavigationGrid(parentContainer: HTMLElement, weekStart: Date): HTMLElement;
}