import { Actions } from '../state/interfaces';
import { SearchRequest } from '../features/searching';
/**
 * Input-specific operations used by the shared pager controller.
 *
 * Memory and pipe sessions leave these operations to the array-backed
 * feature functions. A seekable file may answer an operation from its
 * byte-position view instead, without owning key dispatch or rendering.
 */
export interface PagerInput {
    /** Activates the source after startup options and dimensions are known. */
    ready(): void;
    /** Returns true when the input handled the action completely. */
    handle(action: Actions, count: number): boolean;
    /**
     * less's pos_clear reaching a source engine: it keeps its own copy of
     * the rows a backward move exposed, because the materialized window
     * renumbers itself on every paint, so emptying config.screen alone
     * would let the next sync publish them straight back.
     */
    posClear?(): void;
    /** Runs a compiled search over the input's complete address space. */
    search(request: SearchRequest): boolean;
    /** Restores a seekable source after a cancelled/retyped incsearch. */
    restoreSearchOrigin(): void;
    /** Moves the top to a display-character offset in its own line,
     *  after a width change reshaped how that line breaks. The source's
     *  own view owns the top, so a rebuild would otherwise restore the
     *  old one (less keeps table[TOP] across screen_size_changed). */
    retopOffset(offset: number): void;
    /** Matches brackets across the input's complete address space. */
    bracket(open: string, close: string, forward: boolean, n: number): boolean;
    /** Re-materializes the active file window after a display option changes. */
    rebuild(): boolean;
    /** ^C/--intr during an input-side wait: true when a pending
     *  operation (a growing-spool move, jump or search) was abandoned. */
    interrupt?(): boolean;
    /** less's currline(BOTTOM) at the end of every forw()/back(): the
     *  eager line-number walk running after the rows paint and before
     *  the prompt, with its delayed "Calculating..." and abort chain. */
    resolveBottom?(): void;
    /** Releases the source's file descriptors. */
    close(): void;
}