59 lines
2.7 KiB
Java
59 lines
2.7 KiB
Java
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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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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