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import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import wicket.Component;
import wicket.Response;
import wicket.behavior.IBehavior;
import wicket.markup.ComponentTag;
import wicket.markup.html.IHeaderContributor;

/**
 * Represents a composite behavior allowing the user to attach multiple behaviors to a 
 * component at once. 
 *
 */
public class CompositeBehavior implements IBehavior, IHeaderContributor {
	
	private List<IBehavior> _behaviors; 
	
	public CompositeBehavior(IBehavior[] aBehaviors) { 
		_behaviors = new ArrayList<IBehavior>(Arrays.asList(aBehaviors));
	}
	
	public void add(IBehavior aBehavior) { 
		_behaviors.add(aBehavior);
	}

	public void bind(Component aComponent) {
		for (IBehavior behavior: _behaviors) { 
			behavior.bind(aComponent);
		}
	}

	public void detachModel(Component aComponent) {
		for (IBehavior behavior: _behaviors) { 
			behavior.detachModel(aComponent);
		}
	}

	public void exception(Component aComponent, RuntimeException aException) {
		for (IBehavior behavior: _behaviors) { 
			behavior.exception(aComponent, aException);
		}
	}

	public void onComponentTag(Component aComponent, ComponentTag aTag) {
		for (IBehavior behavior: _behaviors) { 
			behavior.onComponentTag(aComponent, aTag);
		}
	}

	public void rendered(Component aComponent) {
		for (IBehavior behavior: _behaviors) { 
			behavior.rendered(aComponent);
		}
	}

	public void renderHead(Response aResponse) {
		for (IBehavior behavior: _behaviors) {
			if ( behavior instanceof IHeaderContributor) { 
			    ((IHeaderContributor)behavior).renderHead(aResponse);
			}
		}
	}

}