@ordojs/accessibility/dist/screen-reader/index.mjs.map

Comprehensive accessibility system for OrdoJS with ARIA generation, automated testing, and screen reader support

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* @fileoverview OrdoJS Accessibility - Screen Reader Module\n *\n * Screen reader support with announcements and live regions.\n */\n\nimport { EventEmitter } from 'events';\nimport type {\n    LiveRegion,\n    ScreenReaderAnnouncement,\n    ScreenReaderConfig\n} from '../types/index.js';\n\n/**\n * Screen reader manager for handling announcements and live regions\n */\nexport class ScreenReaderManager extends EventEmitter {\n  private config: ScreenReaderConfig;\n  private announcements: Map<string, ScreenReaderAnnouncement>;\n  private liveRegions: Map<string, LiveRegion>;\n  private isInitialized: boolean;\n\n  /**\n   * Create a new ScreenReaderManager instance\n   *\n   * @param config - Screen reader configuration\n   */\n  constructor(config: ScreenReaderConfig) {\n    super();\n\n    this.config = config;\n    this.announcements = new Map();\n    this.liveRegions = new Map();\n    this.isInitialized = false;\n  }\n\n  /**\n   * Initialize the screen reader manager\n   */\n  async initialize(): Promise<void> {\n    if (this.isInitialized) {\n      console.warn('Screen reader manager is already initialized');\n      return;\n    }\n\n    try {\n      // Initialize screen reader support\n      await this.initializeScreenReader();\n\n      this.isInitialized = true;\n      console.log('Screen reader manager initialized successfully');\n\n      this.emit('initialized');\n    } catch (error) {\n      console.error('Failed to initialize screen reader manager:', error);\n      this.emit('error', error);\n      throw error;\n    }\n  }\n\n  /**\n   * Announce message to screen readers\n   *\n   * @param message - Message to announce\n   * @param options - Announcement options\n   * @returns Announcement ID\n   */\n  announce(\n    message: string,\n    options: {\n      priority?: 'polite' | 'assertive';\n      type?: 'status' | 'alert' | 'log' | 'timer' | 'marquee' | 'progressbar';\n      duration?: number;\n      element?: string;\n      context?: string;\n    } = {}\n  ): string {\n    const announcementId = `announcement_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;\n\n    const announcement: ScreenReaderAnnouncement = {\n      id: announcementId,\n      message,\n      priority: options.priority || 'polite',\n      type: options.type || 'status',\n      timestamp: new Date()\n    };\n\n    // Set optional properties only if they have values\n    if (options.duration !== undefined) {\n      announcement.duration = options.duration;\n    }\n    if (options.element) {\n      announcement.element = options.element;\n    }\n    if (options.context) {\n      announcement.context = options.context;\n    }\n\n    this.announcements.set(announcementId, announcement);\n    this.emit('announcementCreated', announcement);\n\n    return announcementId;\n  }\n\n  /**\n   * Create live region\n   *\n   * @param regionId - Region ID\n   * @param element - Element selector\n   * @param options - Region options\n   * @returns Live region\n   */\n  createLiveRegion(\n    regionId: string,\n    element: string,\n    options: {\n      type?: 'status' | 'alert' | 'log' | 'timer' | 'marquee' | 'progressbar';\n      priority?: 'polite' | 'assertive';\n      atomic?: boolean;\n      relevant?: 'additions' | 'removals' | 'text' | 'all';\n      busy?: boolean;\n      expanded?: boolean;\n      controls?: string;\n      describedBy?: string;\n      label?: string;\n    } = {}\n  ): LiveRegion {\n    const region: LiveRegion = {\n      id: regionId,\n      type: options.type || 'status',\n      priority: options.priority || 'polite',\n      element,\n      content: '',\n      atomic: options.atomic || false,\n      relevant: options.relevant || 'additions',\n      busy: options.busy || false\n    };\n\n    // Set optional properties\n    if (options.expanded !== undefined) {\n      region.expanded = options.expanded;\n    }\n    if (options.controls) {\n      region.controls = options.controls;\n    }\n    if (options.describedBy) {\n      region.describedBy = options.describedBy;\n    }\n    if (options.label) {\n      region.label = options.label;\n    }\n\n    this.liveRegions.set(regionId, region);\n    this.emit('liveRegionCreated', region);\n\n    return region;\n  }\n\n  /**\n   * Update live region content\n   *\n   * @param regionId - Region ID\n   * @param content - New content\n   * @param options - Update options\n   */\n  updateLiveRegion(\n    regionId: string,\n    content: string,\n    options: {\n      busy?: boolean;\n      expanded?: boolean;\n    } = {}\n  ): void {\n    const region = this.liveRegions.get(regionId);\n    if (region) {\n      region.content = content;\n\n      if (options.busy !== undefined) {\n        region.busy = options.busy;\n      }\n      if (options.expanded !== undefined) {\n        region.expanded = options.expanded;\n      }\n\n      this.liveRegions.set(regionId, region);\n      this.emit('liveRegionUpdated', region);\n    }\n  }\n\n  /**\n   * Remove live region\n   *\n   * @param regionId - Region ID\n   */\n  removeLiveRegion(regionId: string): void {\n    const region = this.liveRegions.get(regionId);\n    if (region) {\n      this.liveRegions.delete(regionId);\n      this.emit('liveRegionRemoved', region);\n    }\n  }\n\n  /**\n   * Get live region by ID\n   *\n   * @param regionId - Region ID\n   * @returns Live region or undefined\n   */\n  getLiveRegion(regionId: string): LiveRegion | undefined {\n    return this.liveRegions.get(regionId);\n  }\n\n  /**\n   * Get all live regions\n   *\n   * @returns Array of live regions\n   */\n  getAllLiveRegions(): LiveRegion[] {\n    return Array.from(this.liveRegions.values());\n  }\n\n  /**\n   * Get announcement by ID\n   *\n   * @param announcementId - Announcement ID\n   * @returns Announcement or undefined\n   */\n  getAnnouncement(announcementId: string): ScreenReaderAnnouncement | undefined {\n    return this.announcements.get(announcementId);\n  }\n\n  /**\n   * Get all announcements\n   *\n   * @returns Array of announcements\n   */\n  getAllAnnouncements(): ScreenReaderAnnouncement[] {\n    return Array.from(this.announcements.values());\n  }\n\n  /**\n   * Clear announcements\n   */\n  clearAnnouncements(): void {\n    this.announcements.clear();\n    this.emit('announcementsCleared');\n  }\n\n  /**\n   * Get screen reader manager statistics\n   *\n   * @returns Statistics\n   */\n  getStats(): {\n    totalAnnouncements: number;\n    totalLiveRegions: number;\n    announcementsByType: Record<string, number>;\n    liveRegionsByType: Record<string, number>;\n  } {\n    const announcementsByType: Record<string, number> = {};\n    const liveRegionsByType: Record<string, number> = {};\n\n    // Count announcements by type\n    for (const announcement of this.announcements.values()) {\n      announcementsByType[announcement.type] = (announcementsByType[announcement.type] || 0) + 1;\n    }\n\n    // Count live regions by type\n    for (const region of this.liveRegions.values()) {\n      liveRegionsByType[region.type] = (liveRegionsByType[region.type] || 0) + 1;\n    }\n\n    return {\n      totalAnnouncements: this.announcements.size,\n      totalLiveRegions: this.liveRegions.size,\n      announcementsByType,\n      liveRegionsByType\n    };\n  }\n\n  /**\n   * Initialize screen reader support\n   */\n  private async initializeScreenReader(): Promise<void> {\n    console.log('Initializing screen reader support...');\n\n    // Set up announcements if enabled\n    if (this.config.announcements) {\n      this.setupAnnouncements();\n    }\n\n    // Set up live regions if enabled\n    if (this.config.liveRegions) {\n      this.setupLiveRegions();\n    }\n\n    // Set up ARIA support if enabled\n    if (this.config.ariaLabels || this.config.ariaDescriptions || this.config.ariaLandmarks) {\n      this.setupARIASupport();\n    }\n  }\n\n  /**\n   * Setup announcements\n   */\n  private setupAnnouncements(): void {\n    // This is a simplified implementation\n    // In a real implementation, you would set up announcement elements\n    console.log('Setting up announcements...');\n  }\n\n  /**\n   * Setup live regions\n   */\n  private setupLiveRegions(): void {\n    // This is a simplified implementation\n    // In a real implementation, you would set up live region elements\n    console.log('Setting up live regions...');\n  }\n\n  /**\n   * Setup ARIA support\n   */\n  private setupARIASupport(): void {\n    // This is a simplified implementation\n    // In a real implementation, you would set up ARIA attributes\n    console.log('Setting up ARIA support...');\n  }\n}\n"]}