JSDoc: Source: touch_navigatable.js

# Source: touch_navigatable.js

    /*************************************************************
     *
     *  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.
     */
    /**
     * @fileoverview Interface definition for touch navigatable menu elements.
     *
     * @author v.sorge@mathjax.org (Volker Sorge)
     */

    /**
       * Touch events.
       * @enum {string}
       */
    TOUCH =  {
        START: 'touchstart',
        MOVE: 'touchmove',
        END: 'touchend',
        CANCEL: 'touchcancel'
      }

    /**
     * @interface
     */
    TouchNavigatable = function() {}

    /**
         * Navigation selection on keyboard events.
         * @param {TouchEvent} event The keyboard event that fired.
         */
    TouchNavigatable.prototype.touchstart = function() {};

    /**
         * Navigation on escape key pressed.
         * @param {TouchEvent} event The keyboard event that fired.
         */
    TouchNavigatable.prototype.touchmove = function() {};

    /**
         * Navigation on space key pressed.
         * @param {TouchEvent} event The keyboard event that fired.
         */
    TouchNavigatable.prototype.touchend = function() {};

    /**
         * Navigation on left arrow key pressed.
         * @param {TouchEvent} event The keyboard event that fired.
         */
    TouchNavigatable.prototype.touchcancel = function() {};