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/*************************************************************
*
* Copyright (c) 2015-2016 The MathJax Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file Interface definition for key navigatable menu elements.
* @author volker.sorge@gmail.com (Volker Sorge)
*/
/**
* Key codes.
* @enum {number}
*/
export enum KEY {
RETURN = 13,
ESCAPE = 27,
SPACE = 32,
LEFT = 37,
UP = 38,
RIGHT = 39,
DOWN = 40
}
export interface KeyNavigatable {
/**
* Navigation selection on keyboard events.
* @param event The keyboard event that fired.
*/
keydown(event: KeyboardEvent): void;
/**
* Navigation on escape key pressed.
* @param event The keyboard event that fired.
*/
escape(event: KeyboardEvent): void;
/**
* Navigation on space key pressed.
* @param event The keyboard event that fired.
*/
space(event: KeyboardEvent): void;
/**
* Navigation on left arrow key pressed.
* @param event The keyboard event that fired.
*/
left(event: KeyboardEvent): void;
/**
* Navigation on right arrow key pressed.
* @param event The keyboard event that fired.
*/
right(event: KeyboardEvent): void;
/**
* Navigation on upwards arrow key pressed.
* @param event The keyboard event that fired.
*/
up(event: KeyboardEvent): void;
/**
* Navigation on downwards arrow key pressed.
* @param event The keyboard event that fired.
*/
down(event: KeyboardEvent): void;
}
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