de.intarsys.pdf.app.action.StandardActionHandlerRegistry Maven / Gradle / Ivy

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/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 */
package de.intarsys.pdf.app.action;

import java.util.HashMap;
import java.util.Map;

import de.intarsys.pdf.cos.COSName;

/**
 * The default implementation for a action handler factory.
 */
public class StandardActionHandlerRegistry implements IActionHandlerRegistry {
	/**
	 * The mapping from action types to action handler objects.
	 */
	private Map nameMap;

	/**
	 * A default handler if none is detected.
	 */
	private IActionHandler defaultHandler;

	public StandardActionHandlerRegistry() {
		nameMap = new HashMap(5);
	}

	synchronized public IActionHandler[] getActionHandlers() {
		return nameMap.values().toArray(new IActionHandler[nameMap.size()]);
	}

	synchronized public IActionHandler getDefaultHandler() {
		return defaultHandler;
	}

	synchronized public IActionHandler lookupActionHandler(COSName actionType) {
		IActionHandler result = nameMap.get(actionType);
		return result;
	}

	synchronized public void registerActionHandler(IActionHandler handler) {
		nameMap.put(handler.getActionType(), handler);
	}

	synchronized public void registerDefaultHandler(IActionHandler handler) {
		defaultHandler = handler;
	}

	synchronized public void unregisterActionHandler(IActionHandler handler) {
		nameMap.remove(handler.getActionType());
	}
}