InputDevice.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package com.machinepublishers.glass.ui.monocle;

/**
 * Abstraction of an input device and its capabilities
 */
interface InputDevice {

    /**
     * @return true if the device provides touch input for at least one touch
     * point.
     */
    boolean isTouch();

    /**
     * @return true if the device provides touch input for more than one touch
     * point.
     */
    boolean isMultiTouch();

    /**
     * @return true if the device provides relative pointing events. Relative
     * pointing events are those received from devices where the event signifies
     * a relative change in cursor position on the screen. For example, a mouse,
     * trackball, trackpad or joystick is a relative pointing device. A touch
     * screen is an sbsolute pointing device.
     */
    boolean isRelative();

    /**
     * @return true if the device provides direction arrow keys (UP, DOWN, LEFT
     * and RIGHT) and a selection key.
     */
    boolean is5Way();

    /**
     * @return true if the device provides keys for the letters 'A' through 'Z',
     * the digits '0' through '9' and also SPACE, SHIFT and TAB keys in addition
     * to directional arrows and a selection key.
     */
    boolean isFullKeyboard();

}