82 lines
2.4 KiB
JavaScript
82 lines
2.4 KiB
JavaScript
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/**
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* Contains property object generator
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*
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* Copyright (C) 2010 Mike Gerwitz
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*
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* This file is part of ease.js.
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*
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* ease.js is free software: you can redistribute it and/or modify it under the
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* terms of the GNU Lesser General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @author Mike Gerwitz
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* @package core
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*/
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var util = require( './util' );
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exports.setup = function( base, dest, properties, members )
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{
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var prop_pub = properties[ 'public' ],
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prop_prot = properties[ 'protected' ]
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;
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// initialize each of the properties for this instance to
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// ensure we're not sharing references to prototype values
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for ( prop in prop_pub )
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{
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// initialize the value with a clone to ensure that they do
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// not share references (and therefore, data)
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base[ prop ] = util.clone( prop_pub[ prop ] );
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( function( prop )
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{
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var inst = this;
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// public properties, when set internally, must forward to the
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// actual variable
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dest.__defineSetter__( prop, function( val )
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{
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inst[ prop ] = val;
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} );
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// since we're defining a setter, we'll need to define a getter
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// to return the value, or we'll simply return undefined
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dest.__defineGetter__( prop, function()
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{
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return inst[ prop ];
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} );
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} ).call( base, prop );
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}
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var methods_protected = members[ 'protected' ],
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hasOwn = Array.prototype.hasOwnProperty
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;
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// copy over the methods
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for ( method_name in methods_protected )
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{
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if ( hasOwn.call( methods_protected, method_name ) )
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{
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dest[ method_name ] = methods_protected[ method_name ];
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}
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}
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// initialize protected properties and store in instance data
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for ( prop in prop_prot )
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{
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dest[ prop ] = util.clone( prop_prot[ prop ] );
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}
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}
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