import { Text } from "../../doc/src";
import { ChangedRange } from "../../state/src";
import { DecorationSet } from "./decoration";
import { Viewport } from "./viewport";
export declare class HeightOracle {
    doc: Text;
    lineWrapping: boolean;
    heightSamples: {
        [key: number]: boolean;
    };
    lineHeight: number;
    charWidth: number;
    lineLength: number;
    heightChanged: boolean;
    heightForGap(from: number, to: number): number;
    heightForLine(length: number): number;
    setDoc(doc: Text): this;
    mustRefresh(lineHeights: number[]): boolean;
    refresh(whiteSpace: string, lineHeight: number, charWidth: number, lineLength: number, knownHeights: number[]): boolean;
}
export declare class MeasuredHeights {
    readonly from: number;
    readonly heights: number[];
    index: number;
    constructor(from: number, heights: number[]);
    readonly more: boolean;
}
export declare class LineHeight {
    readonly start: number;
    readonly end: number;
    readonly top: number;
    readonly height: number;
    readonly line: HeightMapLine | null;
    constructor(start: number, end: number, top: number, height: number, line: HeightMapLine | null);
    readonly bottom: number;
    readonly textTop: number;
    readonly textBottom: number;
    readonly hasCollapsedRanges: boolean;
}
export declare abstract class HeightMap {
    length: number;
    height: number;
    outdated: boolean;
    constructor(length: number, // The number of characters covered
    height: number, // Height of this part of the document
    outdated?: boolean);
    abstract size: number;
    abstract heightAt(pos: number, doc: Text, bias?: -1 | 1, offset?: number): number;
    abstract lineAt(height: number, doc: Text, offset?: number): LineHeight;
    abstract lineViewport(pos: number, doc: Text, offset?: number): Viewport;
    abstract decomposeLeft(to: number, target: HeightMap[], node: HeightMap, oracle: HeightOracle, newTo: number): void;
    abstract decomposeRight(to: number, target: HeightMap[], node: HeightMap, oracle: HeightOracle, newFrom: number): void;
    abstract updateHeight(oracle: HeightOracle, offset?: number, force?: boolean, measured?: MeasuredHeights): HeightMap;
    abstract toString(): void;
    abstract forEachLine(from: number, to: number, offset: number, oracle: HeightOracle, f: (height: LineHeight) => void): void;
    setHeight(oracle: HeightOracle, height: number): void;
    replace(from: number, to: number, nodes: HeightMap[], oracle: HeightOracle, newFrom: number, newTo: number): HeightMap;
    applyChanges(decorations: ReadonlyArray<DecorationSet>, oracle: HeightOracle, changes: ReadonlyArray<ChangedRange>): HeightMap;
    static empty(): HeightMapLine;
    static of(nodes: HeightMap[]): HeightMap;
}
declare class HeightMapLine extends HeightMap {
    deco: number[];
    constructor(length: number, height: number, deco?: number[]);
    readonly size: number;
    heightAt(pos: number, doc: Text, bias: 1 | -1): number;
    lineAt(height: number, doc: Text, offset?: number): LineHeight;
    lineViewport(pos: number, doc: Text, offset?: number): Viewport;
    replace(from: number, to: number, nodes: HeightMap[], oracle: HeightOracle, newFrom: number, newTo: number): HeightMap;
    decomposeLeft(to: number, target: HeightMap[], node: HeightMap, oracle: HeightOracle, newTo: number): void;
    decomposeRight(from: number, target: HeightMap[], node: HeightMap, oracle: HeightOracle, newFrom: number): void;
    joinLine(from: number, to: number, node: HeightMapLine): HeightMap;
    updateHeight(oracle: HeightOracle, offset?: number, force?: boolean, measured?: MeasuredHeights): this;
    toString(): string;
    forEachLine(from: number, to: number, offset: number, oracle: HeightOracle, f: (height: LineHeight) => void): void;
    readonly hasCollapsedRanges: boolean;
}
export {};