package org.simantics.interop.issues;

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

import org.eclipse.swt.widgets.Display;

public abstract class AbstractIssue implements Issue{
	
	private String description;
	private List<IssueListener> listeners =  new ArrayList<IssueListener>();
	
	@Override
	public String getDescription() {
		return description;
	}
	
	public void setDescription(String description) {
		this.description = description;
		fireUpdated();
	}
	
	protected void fireUpdated() {
		Display.getDefault().asyncExec(new Runnable() {
			@Override
			public void run() {
				synchronized (listeners) {
					for (IssueListener l : listeners) {
						l.updated(AbstractIssue.this);
					}	
				}
				
			}
		});
	}
	
	protected void fireDisposed() {
		Display.getDefault().asyncExec(new Runnable() {
			@Override
			public void run() {
				List<IssueListener> list = new ArrayList<IssueListener>();
				list.addAll(listeners);
				for (IssueListener l : list) {
					l.disposed(AbstractIssue.this);
				}
				listeners.clear();
			}
		});
	}
	
	@Override
	public void addListener(IssueListener listener) {
		synchronized(listeners) {
			listeners.add(listener);
		}
	}
	
	@Override
	public void removeListener(IssueListener listener) {
		synchronized(listeners) {
			listeners.remove(listener);
		}
	}
	
	@Override
	public void dispose() {
		fireDisposed();
	}

}