import type * as OpenFin from '../../../../OpenFin';
import { ViewOverlay } from '../utils/view-overlay';
type View = OpenFin.View;
/**
 * Set of apis used to facilitate tab drag interactions without needing to hide views.
 * @ignore
 */
export declare class TabDragController {
    private readonly viewOverlay;
    constructor(viewOverlay: ViewOverlay);
    private dropZonePreview?;
    /**
     *
     * When a tab is dragged out of a stack, it will need to be hidden from the stack.
     *
     * Additionally, if there is a new view to show in the stack, it will be shown at the position specified by
     * containerBounds
     *
     * As drag interactions can under extreme circumstances complete before this chain of promises has completed,
     * we need to pass in a isDragging() function which returns whether the drag is in progress.
     * This allows us to cancel any layout affecting operations.
     *
     * @param draggingView The view which is currently being dragged
     * @param isLastViewInWindow Whether the draggin view is the last view in a window or not. If false, the dragging view will not hide.
     * @param isDragging A function which returns true if the drag is still in progress. As we chain some async calls here, we want to avoid
     * modifying any views if the drag has completed (as the post drag procedure will have taken care of it.)
     * @param containerBounds The bounds of the container of the view to be shown in the stack
     * @param nextView The view which has become active after dragging the draggingView out.
     */
    handleTabStackActiveView: (draggingView: View, isLastViewInWindow: boolean, isDragging: () => boolean, containerBounds?: OpenFin.Bounds, nextView?: View) => Promise<void>;
    /**
     * Extracts the border and backgroundColor css values from the drop zone preview,
     * and sets the viewOverlay to match them.
     */
    inheritStyles: () => Promise<void>;
    /**
     * Called when a tab drag interaction is started from the current window (not when it enters the window).
     *
     * Sets all views in the platform to ignore mouse events so that they can pass through to the golden-layout
     * document whilst remaining visible.
     */
    startDrag: () => Promise<void>;
    /**
     * Called when a tab drag interaction which was started from the current window ends.
     *
     * Disables the click through setting on every view in the platform.
     */
    endDrag: () => Promise<void>;
    private disposeObserve?;
    disposeOverlayObserver: () => void;
    /**
     * Observes a golden-layout drop zone preview in order to render a BrowserView
     * overlay whenever a tab is dragged over a droppable region.
     * @param dropZonePreview The drop zone preview element created by Golden Layout in order to highlight
     * droppable regions of the UI.
     */
    observeOverlay: (dropZonePreview: HTMLElement) => Promise<void>;
}
export {};