79 lines
3.7 KiB
Java
79 lines
3.7 KiB
Java
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package netscape.plugin.composer;
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import java.util.*;
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import java.io.*;
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/** Used to create plugins at runtime. When the composer starts up, it examins
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* each plugin file's netscape_plugin_composer.ini file to see if it defines the property
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* "netscape.plugin.composer.Factory".
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* If it does, the value of that property is taken to be a classname of a class
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* derived from Factory. That class is instantiated, and it's getPlugins method
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* is called. This method is responsible for creating and returning an array of
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* plugins.
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*
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* <p>Most developers don't need to use this class -- they can simply use the
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* "netscape.plugin.composer.classes" property to name their plugin classes
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* directly. However, the Factory class provides additional flexability. Some
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* possible uses of a Factory class include:
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* <ol><li>A wrapper for another application's plugins. The wrapper factory would
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* search the other application's data base, find the other application's plugins,
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* and synthasize Plugin instances that wrapped the other application's plugins.
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* <li>A remote repository of plugins that's searched at run time.
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* </ol>
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*/
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public class Factory {
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/** If you have a default constructor, it must be public, or else you class cannot be
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* instantiated by name. (And your class should be public, too.)
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*/
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public Factory() {}
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/** Return an Enumeration of Plugins.
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* By default, searches the properties for the property "netscape.plugin.composer.classes",
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* and creates one instance of each of the plugins names in that string.
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* @param pluginFile The plugin file that's being scanned.
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* @param properties The properties of the plugin file that's being scanned.
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* @return the Plugins to add to the Composer.
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*
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*/
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public Enumeration getPlugins(File pluginFileName, Properties properties){
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String classNames = properties.getProperty("netscape.plugin.composer.classes");
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return PluginManager.instantiateClassList(classNames);
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}
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}
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