import { OnInit, ElementRef, OnChanges, SimpleChanges, EventEmitter, OnDestroy, ChangeDetectorRef, AfterViewInit } from '@angular/core';
import { DomSanitizer, SafeHtml, SafeResourceUrl } from '@angular/platform-browser';
import * as i0 from "@angular/core";
declare global {
    interface Window {
        pdfjsLib: any;
    }
}
export type ViewMode = 'continuous' | 'page';
export interface ToolbarConfig {
    showPrint?: boolean;
    showZoom?: boolean;
    showRotation?: boolean;
    showNavigation?: boolean;
    showPageInput?: boolean;
    showFitToWidth?: boolean;
    showFullscreen?: boolean;
    showSearch?: boolean;
    showThumbnails?: boolean;
    showViewModeToggle?: boolean;
}
export interface ViewerConfig {
    defaultViewMode?: ViewMode;
    enablePrint?: boolean;
    enableZoom?: boolean;
    enableNavigation?: boolean;
    enableViewModeToggle?: boolean;
    pdfWorkerSrc?: string;
    theme?: 'light' | 'dark';
    height?: string;
    useGoogleDocsViewer?: boolean;
    forceChapterStartOnNewPage?: boolean;
    enableWatermark?: boolean;
    watermarkText?: string;
    watermarkOpacity?: number;
    disableCopy?: boolean;
    disableRightClick?: boolean;
    enableKeyboardShortcuts?: boolean;
    mobileOptimized?: boolean;
    autoFitMobile?: boolean;
    mobileScale?: number;
}
export interface PageChangeEvent {
    page: number;
    totalPages: number;
    type: 'pdf' | 'word' | 'excel' | 'ppt';
    viewMode: ViewMode;
}
export declare class NgxUniversalFileViewerComponent implements OnInit, OnChanges, OnDestroy, AfterViewInit {
    private sanitizer;
    private cdr;
    private platformId;
    pdfCanvas: ElementRef<HTMLCanvasElement>;
    canvasContainer: ElementRef<HTMLDivElement>;
    canvasWrapper: ElementRef<HTMLDivElement>;
    continuousContainer: ElementRef<HTMLDivElement>;
    wordRoot: ElementRef<HTMLDivElement>;
    viewerContainer: ElementRef<HTMLDivElement>;
    src: string | ArrayBuffer | Blob;
    fileType: 'auto' | 'pdf' | 'word' | 'excel' | 'ppt';
    showToolbar: boolean;
    toolbarConfig: ToolbarConfig;
    viewerConfig: ViewerConfig;
    viewMode: ViewMode;
    onLoad: EventEmitter<any>;
    onError: EventEmitter<any>;
    pageChange: EventEmitter<PageChangeEvent>;
    viewModeChange: EventEmitter<ViewMode>;
    isLoading: boolean;
    loadingMessage: string;
    loadingProgress: number;
    errorMessage: string;
    pdfDocument: any;
    currentPage: number;
    totalPages: number;
    scale: number;
    rotation: number;
    pdfPagesArray: number[];
    private pdfLib;
    private renderTask;
    useGoogleViewer: boolean;
    isPublicUrl: boolean;
    googleDocsViewerUrl: SafeResourceUrl;
    wordZoom: number;
    excelContent: SafeHtml;
    excelSheets: string[];
    currentSheet: number;
    workbook: any;
    currentSlide: number;
    totalSlides: number;
    slideContent: SafeHtml;
    slides: string[];
    isMobileView: boolean;
    showMobileMenu: boolean;
    isFullscreen: boolean;
    showKeyboardHelp: boolean;
    private touchStartX;
    private touchStartY;
    private initialPinchDistance;
    private lastScale;
    private isBrowser;
    private resizeObserver;
    private renderDebounce;
    private viewerReady;
    constructor(sanitizer: DomSanitizer, cdr: ChangeDetectorRef, platformId: Object);
    ngOnInit(): void;
    ngAfterViewInit(): void;
    ngOnChanges(changes: SimpleChanges): void;
    ngOnDestroy(): void;
    private setupResizeObserver;
    private onContainerResize;
    onWindowResize(): void;
    checkMobileView(): void;
    applyMobileDefaults(): void;
    toggleMobileMenu(): void;
    closeMobileMenu(): void;
    onTouchStart(e: TouchEvent): void;
    onTouchMove(e: TouchEvent): void;
    onTouchEnd(_: TouchEvent): void;
    onContextMenu(e: MouseEvent): boolean;
    handleKey(e: KeyboardEvent): void;
    toggleKeyboardHelp(): void;
    toggleFullscreen(): void;
    initializePdfJs(): Promise<void>;
    loadFile(): Promise<void>;
    detectFileType(): void;
    loadPDF(): Promise<void>;
    private getPdfData;
    /**
     * Calculates the correct scale so the PDF fills the available container
     * width.  Works for both page-mode (canvasContainer) and continuous-mode
     * (continuousContainer).
     */
    fitToWidthAsync(): Promise<void>;
    /** Public toolbar button — fit then re-render. */
    fitToWidth(): Promise<void>;
    private renderCurrentView;
    private cancelRenderTask;
    renderPage(pageNum: number): Promise<void>;
    renderPageToContinuous(pageNum: number): Promise<void>;
    renderAllPages(): Promise<void>;
    /**
     * Polls until `this.pdfCanvas` ViewChild is non-null.
     * Falls back after `maxMs` milliseconds.
     */
    private waitForCanvas;
    /**
     * Polls until `document.getElementById('pdf-page-N')` is non-null.
     * Falls back after `maxMs` milliseconds.
     */
    private waitForContinuousCanvas;
    onContinuousScroll(e: Event): void;
    toggleViewMode(): void;
    firstPage(): void;
    lastPage(): void;
    previousPage(): void;
    nextPage(): void;
    goToPage(): void;
    zoomIn(): void;
    zoomOut(): void;
    resetZoom(): void;
    changeZoom(): void;
    rotate(deg: number): void;
    private debouncedRender;
    loadWord(): Promise<void>;
    zoomInWord(): void;
    zoomOutWord(): void;
    resetWordZoom(): void;
    fitToPageWidth(): void;
    loadExcel(): Promise<void>;
    renderExcelSheet(idx: number): void;
    onSheetChange(): void;
    loadPPT(): Promise<void>;
    renderSlide(n: number): void;
    previousSlide(): void;
    nextSlide(): void;
    retry(): void;
    private waitForDom;
    getArrayBuffer(): Promise<ArrayBuffer>;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgxUniversalFileViewerComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<NgxUniversalFileViewerComponent, "ngx-universal-file-viewer", never, { "src": { "alias": "src"; "required": false; }; "fileType": { "alias": "fileType"; "required": false; }; "showToolbar": { "alias": "showToolbar"; "required": false; }; "toolbarConfig": { "alias": "toolbarConfig"; "required": false; }; "viewerConfig": { "alias": "viewerConfig"; "required": false; }; "viewMode": { "alias": "viewMode"; "required": false; }; }, { "onLoad": "onLoad"; "onError": "onError"; "pageChange": "pageChange"; "viewModeChange": "viewModeChange"; }, never, never, true, never>;
}