export declare class ImageDisplayControl extends HTMLImageElement {
    static get observedAttributes(): string[];
    private static readonly _ORIGINAL_IMAGE_REGION;
    connectedCallback(): void;
    disconnectedCallback(): void;
    attributeChangedCallback(attributeName: string): void;
    _getInternal(expr: string): any;
    private _behaviorChanged;
    private _resizeCallback;
    private _imageLoadedLateCallback;
    private _registerImageLoadedLateCallback;
    private _unregisterImageLoadedLateCallback;
    private _populateRectangleImageRegions;
    private _populateFittedImageSize;
    private _panAndZoomToBestRegion;
    private _findBestRegion;
    private _adaptParentCssContainment;
    private _restoreOriginalParentCssContainment;
    private _restoreOriginalParentCssContain;
    private _restoreOriginalParentCssOverflow;
    private _setDebounceSizesAttribute;
    private _restoreOriginalBorderAndPadding;
    private _setCssToMiddleCropOriginalImage;
    private _setCssToPanAndZoomToRegion;
    private _resetDebugRegionOverlays;
    private _recreateEmptyDebugRegionOverlays;
    private _removeDebugRegionOverlays;
    private _drawDebugRegionOverlays;
    private _drawDebugRegionOverlay;
    private _pickNextOvelayStyle;
    private _populateBrowserFeatures;
    private _cssContainFallbackStrategy;
    private _isDisabled;
    private _isCssContainUnsupportedOrDisabled;
    private _currentCssContainmentStrategy;
    private _rectangleImageRegions;
    private _sizeObserver;
    private _elementSize;
    private _fittedImageSize;
    private _fittedImageBottomRightMargin;
    private _parentElement;
    private _parentCssContainToRestore;
    private _parentCssOverflowToRestore;
    private _sizesAttributeToRestore;
    private _sizesAttributeDebounceTimer;
    private _sizesAttributeLastSet;
    private _cssBorderToRestore;
    private _cssPaddingToRestore;
    private _logger;
    private _browserFeatures;
    private _debugRegionOverlayContainer;
    private _debugRegionOverlays;
    private _debugRegionOverlayStyles;
}