import { ElementRef, EventEmitter, OnChanges, OnDestroy, OnInit, SimpleChanges } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { DiffConfig, MergeView } from '@codemirror/merge';
import { Extension } from '@codemirror/state';
import { Setup } from './code-editor';
import * as i0 from "@angular/core";
export type Orientation = 'a-b' | 'b-a';
export type RevertControls = 'a-to-b' | 'b-to-a';
export type RenderRevertControl = () => HTMLElement;
export interface DiffEditorModel {
    original: string;
    modified: string;
}
export declare class DiffEditor implements OnChanges, OnInit, OnDestroy, ControlValueAccessor {
    private _elementRef;
    /**
     * The editor's built-in setup. The value can be set to
     * [`basic`](https://codemirror.net/docs/ref/#codemirror.basicSetup),
     * [`minimal`](https://codemirror.net/docs/ref/#codemirror.minimalSetup) or `null`.
     *
     * Don't support change dynamically!
     */
    setup: Setup;
    /** The diff-editor's original value. */
    originalValue: string;
    /**
     * The MergeView original config's
     * [extensions](https://codemirror.net/docs/ref/#state.EditorStateConfig.extensions).
     *
     * Don't support change dynamically!
     */
    originalExtensions: Extension[];
    /** The diff-editor's modified value. */
    modifiedValue: string;
    /**
     * The MergeView modified config's
     * [extensions](https://codemirror.net/docs/ref/#state.EditorStateConfig.extensions).
     *
     * Don't support change dynamically!
     */
    modifiedExtensions: Extension[];
    /** Controls whether editor A or editor B is shown first. Defaults to `"a-b"`. */
    orientation?: Orientation;
    /** Controls whether revert controls are shown between changed chunks. */
    revertControls?: RevertControls;
    /** When given, this function is called to render the button to revert a chunk. */
    renderRevertControl?: RenderRevertControl;
    /**
     * By default, the merge view will mark inserted and deleted text
     * in changed chunks. Set this to false to turn that off.
     */
    highlightChanges: boolean;
    /** Controls whether a gutter marker is shown next to changed lines. */
    gutter: boolean;
    /** Whether the diff-editor is disabled. */
    disabled: boolean;
    /**
     * When given, long stretches of unchanged text are collapsed.
     * `margin` gives the number of lines to leave visible after/before
     * a change (default is 3), and `minSize` gives the minimum amount
     * of collapsible lines that need to be present (defaults to 4).
     */
    collapseUnchanged?: {
        margin?: number;
        minSize?: number;
    };
    /** Pass options to the diff algorithm. */
    diffConfig?: DiffConfig;
    /** Event emitted when the editor's original value changes. */
    originalValueChange: EventEmitter<string>;
    /** Event emitted when focus on the original editor. */
    originalFocus: EventEmitter<void>;
    /** Event emitted when blur on the original editor. */
    originalBlur: EventEmitter<void>;
    /** Event emitted when the editor's modified value changes. */
    modifiedValueChange: EventEmitter<string>;
    /** Event emitted when focus on the modified editor. */
    modifiedFocus: EventEmitter<void>;
    /** Event emitted when blur on the modified editor. */
    modifiedBlur: EventEmitter<void>;
    private _onChange;
    private _onTouched;
    constructor(_elementRef: ElementRef<Element>);
    /** The merge view instance. */
    mergeView?: MergeView;
    private _updateListener;
    private _editableConf;
    ngOnChanges(changes: SimpleChanges): void;
    ngOnInit(): void;
    ngOnDestroy(): void;
    writeValue(value: DiffEditorModel): void;
    registerOnChange(fn: (value: DiffEditorModel) => void): void;
    registerOnTouched(fn: () => void): void;
    setDisabledState(isDisabled: boolean): void;
    /** Sets diff-editor's value. */
    setValue(editor: 'a' | 'b', value: string): void;
    /** Sets diff-editor's editable state. */
    setEditable(editor: 'a' | 'b', value: boolean): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DiffEditor, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DiffEditor, "diff-editor", never, { "setup": { "alias": "setup"; "required": false; }; "originalValue": { "alias": "originalValue"; "required": false; }; "originalExtensions": { "alias": "originalExtensions"; "required": false; }; "modifiedValue": { "alias": "modifiedValue"; "required": false; }; "modifiedExtensions": { "alias": "modifiedExtensions"; "required": false; }; "orientation": { "alias": "orientation"; "required": false; }; "revertControls": { "alias": "revertControls"; "required": false; }; "renderRevertControl": { "alias": "renderRevertControl"; "required": false; }; "highlightChanges": { "alias": "highlightChanges"; "required": false; }; "gutter": { "alias": "gutter"; "required": false; }; "disabled": { "alias": "disabled"; "required": false; }; "collapseUnchanged": { "alias": "collapseUnchanged"; "required": false; }; "diffConfig": { "alias": "diffConfig"; "required": false; }; }, { "originalValueChange": "originalValueChange"; "originalFocus": "originalFocus"; "originalBlur": "originalBlur"; "modifiedValueChange": "modifiedValueChange"; "modifiedFocus": "modifiedFocus"; "modifiedBlur": "modifiedBlur"; }, never, never, true, never>;
    static ngAcceptInputType_highlightChanges: unknown;
    static ngAcceptInputType_gutter: unknown;
    static ngAcceptInputType_disabled: unknown;
}