import * as CodeMirror from 'codemirror';
import { CodeMirrorWidget } from '../../codemirror/widget';
import { IChangedArgs } from 'phosphor-properties';
import { ISignal } from 'phosphor-signaling';
import { ICellModel } from './model';
import { JSONObject } from '../common/json';
/**
 * The location of requested edges.
 */
export declare type EdgeLocation = 'top' | 'bottom';
/**
 * An interface describing editor state coordinates.
 */
export interface ICoords extends JSONObject {
    /**
     * The left coordinate value.
     */
    left: number;
    /**
     * The right coordinate value.
     */
    right: number;
    /**
     * The top coordinate value.
     */
    top: number;
    /**
     * The bottom coordinate value.
     */
    bottom: number;
}
/**
 * An interface describing the state of the editor in an event.
 */
export interface IEditorState extends JSONObject {
    /**
     * The character number of the editor cursor within a line.
     */
    ch: number;
    /**
     * The height of a character in the editor.
     */
    chHeight: number;
    /**
     * The width of a character in the editor.
     */
    chWidth: number;
    /**
     * The line number of the editor cursor.
     */
    line: number;
    /**
     * The coordinate position of the cursor.
     */
    coords: ICoords;
    /**
     * The cursor position of the request, including line breaks.
     */
    position: number;
}
/**
 * An interface describing editor text changes.
 */
export interface ITextChange extends IEditorState {
    /**
     * The old value of the editor text.
     */
    oldValue: string;
    /**
     * The new value of the editor text.
     */
    newValue: string;
}
/**
 * An interface describing completion requests.
 */
export interface ICompletionRequest extends IEditorState {
    /**
     * The current value of the editor text.
     */
    currentValue: string;
}
/**
 * A widget for a cell editor.
 */
export declare class CellEditorWidget extends CodeMirrorWidget {
    /**
     * Construct a new cell editor widget.
     */
    constructor(options?: CodeMirror.EditorConfiguration);
    /**
     * A signal emitted when either the top or bottom edge is requested.
     */
    edgeRequested: ISignal<CellEditorWidget, EdgeLocation>;
    /**
     * A signal emitted when a text change is completed.
     */
    textChanged: ISignal<CellEditorWidget, ITextChange>;
    /**
     * A signal emitted when a tab (text) completion is requested.
     */
    completionRequested: ISignal<CellEditorWidget, ICompletionRequest>;
    /**
     * The cell model used by the editor.
     */
    model: ICellModel;
    /**
     * The line numbers state of the editor.
     */
    lineNumbers: boolean;
    /**
     * Dispose of the resources held by the editor.
     */
    dispose(): void;
    /**
     * Get the current cursor position of the editor.
     */
    getCursorPosition(): number;
    /**
     * Set the current cursor position of the editor.
     */
    setCursorPosition(position: number): void;
    /**
     * Handle changes in the model state.
     */
    protected onModelStateChanged(model: ICellModel, args: IChangedArgs<any>): void;
    /**
     * Handle change events from the document.
     */
    protected onDocChange(doc: CodeMirror.Doc, change: CodeMirror.EditorChange): void;
    /**
     * Handle keydown events from the editor.
     */
    protected onEditorKeydown(editor: CodeMirror.Editor, event: KeyboardEvent): void;
    /**
     * Handle a tab key press.
     */
    protected onTabEvent(event: KeyboardEvent, ch: number, line: number): void;
    private _model;
}