import * as React from 'react';
/**
 * Base class for all ViewContoller classes in WDK. This base class is
 * responsible for:
 * - providing render hooks based on state predicates
 */
export default class ViewController<Props = {}, State = {}> extends React.PureComponent<Props, State> {
    /**
     * Renders the highest page component below the Page tag.
     */
    renderView(): JSX.Element | null;
    /**
     * Renders data load error message
     */
    renderDataLoadError(): JSX.Element;
    /**
     * Renders data not found message
     */
    renderDataNotFound(): JSX.Element;
    /**
     * Renders data permission denied
     */
    renderDataPermissionDenied(): JSX.Element;
    /**
     * Renders data loading message
     */
    renderDataLoading(): JSX.Element;
    renderError(): JSX.Element;
    /**
     * This is a good place to perform side-effects, such as calling an action
     * creator to load data for a store.
     *
     * Called when the component is first mounted with the state of the store
     * and the initial props. Also called when new props are received, with the
     * state of the store, the new props, and the old props. On the first call
     * when the component is first mounted, the old props will be undefined.
     */
    loadData(prevProps?: Props): void;
    /**
     * Returns whether an initial data load error has occurred which would prevent
     * the page from rendering.
     * @param {Object} state The current state.
     */
    isRenderDataLoadError(): boolean;
    /**
     * Returns whether enough data has been loaded into the store to render the
     * page.
     */
    isRenderDataLoaded(): boolean;
    /**
     * Returns whether required data resources are not found.
     */
    isRenderDataNotFound(): boolean;
    /**
     * Returns whether access to required data resources are forbidden for current user.
     */
    isRenderDataPermissionDenied(): boolean;
    componentDidMount(): void;
    componentDidUpdate(prevProps: Props): void;
    /**
     * Renders the page of this controller.  Subclasses may override, but may
     * save effort by overriding renderView() instead.  This method will call that
     * one but only after checking if data required for render has been not yet
     * fully loaded or has erred during loading.
     */
    render(): JSX.Element;
}
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