tv_xiaoyouxi/games/dwy/cocos2d-html5-v2.2.3/cocos2d/CCKeyboardDelegate.js

/****************************************************************************
 Copyright (c) 2010-2012 cocos2d-x.org
 Copyright (c) 2008-2010 Ricardo Quesada
 Copyright (c) 2011      Zynga Inc.

 http://www.cocos2d-x.org

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
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 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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/**
 * you must extend the keyboardDelegate and
 * implement your own game logic in
 * keydown and keyup functions
 * @class
 * @extends cc.Class
 */
cc.KeyboardDelegate = cc.Class.extend(/** @lends cc.KeyboardDelegate# */{
    /**
     * Call back when a key is pressed down
     * @param {Integer} keyCode
     * @example
     * // example
     * if(keyCode == cc.KEY.w){}
     */
    onKeyDown:function (keyCode) {
    },

    /**
     * Call back when a key is released
     * @param {Integer} keyCode
     * @example
     * // example
     * if(keyCode == cc.KEY.w){}
     */
    onKeyUp:function (keyCode) {
    }
});

/**
 * KeyboardHandler is an object that contains KeyboardDelegate
 * @class
 * @extends cc.Class
 */
cc.KeyboardHandler = cc.Class.extend(/** @lends cc.KeyboardHandler# */{
    /**
     * returns the keyboard delegate
     * @return {cc.KeyboardDelegate}
     */
    getDelegate:function () {
        return this._delegate;
    },

    /**
     * set the keyboard delegate
     * @param {cc.KeyboardDelegate} delegate
     */
    setDelegate:function (delegate) {
        this._delegate = delegate;
    },
    /**
     * initializes a cc.KeyboardHandler with a delegate
     * @param {cc.KeyboardDelegate} delegate
     * @return {Boolean}
     */
    initWithDelegate:function (delegate) {
        if(!delegate)
            throw "cc.KeyboardHandler.initWithDelegate(): delegate must be non-null";

        this._delegate = delegate;
        return true;
    },
    _delegate:null
});
/**
 * Create a KeyboardHandler with KeyboardDelegate
 * @param delegate
 * @return {cc.KeyboardHandler}
 */
cc.KeyboardHandler.create = function (delegate) {
    var handler = new cc.KeyboardHandler();
    handler.initWithDelegate(delegate);
    return handler;
};