codegenconfigmanager.java

java 调用windows的api

package org.jawin.browser.codegen;

import java.util.ArrayList;
import org.jawin.browser.config.ConfigManager;

/**
 * A bucket to manage the currently available code generation
 * configurations loaded.
 *
 * <p>Title: Jawin Code Generation GUI</p>
 * <p>Description: GUI for exploring type libraries and generating Java code</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: Open Source Incentive</p>
 *
 * @author Josh Passenger
 * @version 1.0
 */

public class CodeGenConfigManager
{
	private static CodeGenConfigManager instance = null;
	private ArrayList codeGenConfig = new ArrayList();

	/**
	 * Empty private constructor
	 */
	private CodeGenConfigManager()
	{

	}

	/**
	 * Initialize the manager, loading and storing the configuration
	 */
	public static synchronized void initialize()
	{
		instance = new CodeGenConfigManager();
		instance.loadConfiguration();
	}

	/**
	 * Fetch the shared CodeGenConfigManager singleton instance
	 *
	 * @return the singleton CodeGenConfigManager instance
	 */
	public static CodeGenConfigManager getInstance()
	{
		if (instance == null)
		{
			throw new IllegalStateException("CodeGenConfigManager.getInstance() CodeGenConfigManager was not initialized");
		}

		return instance;
	}

	/**
	 * Fetch the configuration at the requested index
	 *
	 * @param index the index to fetch
	 * @return the CodeGenConfig at the requested index
	 */
	public CodeGenConfig getConfigAt(int index)
	{
		return (CodeGenConfig) codeGenConfig.get(index);
	}

	/**
	 * Fetch the number of laoded configuration items
	 *
	 * @return the number of active configurations
	 */
	public int getConfigCount()
	{
		return codeGenConfig.size();
	}

	/**
	 * Adds a new configuration to the collection
	 *
	 * @param newConfig the configuration item to store
	 */
	public void addCodeGenConfig(CodeGenConfig newConfig)
	{
		codeGenConfig.add(newConfig);
	}

	/**
	 * Clears the currently loaded configuration
	 */
	public void clearConfig()
	{
		codeGenConfig.clear();
	}

	/**
	 * Loads the configuration from disk
	 */
	private void loadConfiguration()
	{
		String codeGenConfigFile = ConfigManager.getInstance().getString("codegen.config", "config/codegen.xml");
		CodeGenConfigParser parser = new CodeGenConfigParser();
		parser.parseCodeGenConfig(codeGenConfigFile);
	}
}