bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/PluginActionSetReader.java

/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.internal;

import org.eclipse.core.runtime.*;
import org.eclipse.ui.internal.decorators.*;
import org.eclipse.ui.internal.registry.*;
import java.util.*;

/**
 * Read the actions for an plugin action set.
 *
 * [Issue: There is some overlap with the class
 *		PluginActionSetBuilder which should be reviewed
 *		at a later time and maybe merged together]
 */
public class PluginActionSetReader extends RegistryReader {
	private List cache = new ArrayList();
/**
 * PluginActionSetReader constructor comment.
 */
public PluginActionSetReader() {
	super();
}
/**
 * This factory method returns a new ActionDescriptor for the
 * configuration element.  
 */
protected LightweightActionDescriptor createActionDescriptor(IConfigurationElement element) {
	return new LightweightActionDescriptor(element);
}
/**
 * Return all the action descriptor within the set.
 */
public LightweightActionDescriptor[] readActionDescriptors(ActionSetDescriptor actionSet) {
	readElements(new IConfigurationElement[] {actionSet.getConfigElement()});
	LightweightActionDescriptor[] actions = new LightweightActionDescriptor[cache.size()];
	cache.toArray(actions);
	return actions;
}
/**
 * @see RegistryReader
 */
protected boolean readElement(IConfigurationElement element) {
	String tag = element.getName();
	if (tag.equals(PluginActionSetBuilder.TAG_ACTION_SET)) {
		readElementChildren(element);
		return true;
	}
	if (tag.equals(ObjectActionContributorReader.TAG_OBJECT_CONTRIBUTION)) {
		// This builder is sometimes used to read the popup menu
		// extension point.  Ignore all object contributions.
		return true;
	}
	if (tag.equals(PluginActionSetBuilder.TAG_MENU)) {
		return true; // just cache the element - don't go into it
	}
	if (tag.equals(PluginActionSetBuilder.TAG_ACTION)) {
		cache.add(createActionDescriptor(element));
		return true; // just cache the action - don't go into
	}
	
	return false;
}
}