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Object Automation library

There is a newer version: 3.7.10

/*  Copyright 1999 Vince Via [email protected]
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/
package com.viaoa.hub;

import com.viaoa.object.OAObject;

/**
 * Used to have two hubs use the same objects, so that the ordering can be different.
 *
 * @see HubMakeCopy to only have the copy done when hubMaster AO or newList events. It will not change hubMaster when hubCopy has adds or
 *      removes.
 */
public class HubCopy extends HubFilter {

	public HubCopy(Hub hubMaster, Hub hubCopy, boolean bShareAO) {
		super(hubMaster, hubCopy, bShareAO);
	}

	// if object is directly removed from filtered hub, then remove from hubMaster
	@Override
	protected void afterRemoveFromFilteredHub(T obj) {
		if (hubMaster != null && hubMaster.contains(obj)) {
			hubMaster.remove(obj);
		}
	}

	@Override
	public boolean isUsed(T object) {
		if (object != objTemp) {
			return true;
		}
		return hubMaster.contains(object);
	}

	@Override
	public void afterRemoveAllFromFilteredHub() {
		if (hubMaster != null) {
			hubMaster.removeAll();
		}
	}

	@Override
	public void onNewList(HubEvent e) {
		if (hubMaster == null) {
			return;
		}
		Hub h = weakHub.get();
		if (h == null) {
			return;
		}
		for (Object obj : h) {
			hubMaster.add((T) obj);
		}
	}

}