layouteventhandler.java

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/*
 * Created on May 18, 2005
 */
package org.flexdock.perspective.event;

import java.util.EventListener;

import org.flexdock.event.Event;
import org.flexdock.event.EventHandler;
import org.flexdock.perspective.Layout;

/**
 * @author Christopher Butler
 */
public class LayoutEventHandler extends EventHandler {

	public boolean acceptsEvent(Event evt) {
		return evt instanceof LayoutEvent;
	}
	public boolean acceptsListener(EventListener listener) {
		return listener instanceof LayoutListener;
	}
	
	public void handleEvent(Event evt, EventListener listener, int eventType) {
		LayoutEvent event = (LayoutEvent)evt;
		LayoutListener consumer = (LayoutListener)listener;
		
		switch(eventType) {
			case LayoutEvent.DOCKABLE_HIDDEN:
				consumer.dockableHidden(event);
				break;
			case LayoutEvent.DOCKABLE_RESTORED:
				consumer.dockableDisplayed(event);
				break;
			case LayoutEvent.LAYOUT_APPLIED:
				consumer.layoutApplied(event);
				break;
			case LayoutEvent.LAYOUT_EMPTIED:
				consumer.layoutEmptied(event);
				break;
		}
	}
	
	public EventListener[] getListeners(Object eventTarget) {
		return eventTarget instanceof Layout? 
				((Layout)eventTarget).getListeners(): null;
	}
}