import { ElementRef, EventEmitter, NgZone } from '@angular/core';
import { ControlContainer } from '@angular/forms';
import { CommonImage } from '../../models/images.model';
import { Base } from '../../models/base';
export interface FileUploaderMsg {
    required: string;
}
export declare class FileUploaderComponent extends Base {
    private zone;
    private controlContainer;
    browseFileRef: ElementRef;
    images: Array<CommonImage>;
    id: string;
    showError: boolean;
    required: boolean;
    instructionText: string;
    errorMessages: FileUploaderMsg;
    imagesChange: EventEmitter<Array<CommonImage>>;
    errorDocument: EventEmitter<CommonImage>;
    constructor(zone: NgZone, controlContainer: ControlContainer);
    /** Opens the file upload dialog from the browser. */
    openFileDialog(): void;
    handleDragOver(event: any): void;
    handleDrop(event: any): void;
    handleChangeFile(event: any): void;
    private processFile;
    private processPDFFile;
    private getPageImage;
    private processImageFile;
    private scaleImage;
    private createImage;
    private addFileImages;
    deleteImage(image: CommonImage): void;
    private resetFileInput;
    /**
     * This is created as a workaround to access the form control that binds to
     * the input[type='file']. We can't access it via the template name bindings
     * as that isn't working, so instead we access the parent form and then find
     * the input by name.
     */
    readonly fileControl: any;
    private handleError;
    private getConstrainedSize;
    /**
     * A special method to force the rendering of this component.  This is a workaround
     * because for some unknown reason, AngularJS2 change detector does not detect the
     * change of the images Array.
     */
    forceRender(): void;
    handleKeyDownFileBrowse(event: KeyboardEvent): void;
}