// **********************************************************************
//
// Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
package IceGridGUI.Application;

class Editable implements Cloneable
{
    Editable(boolean brandNew)
    {
	_isNew = brandNew;
    }

    boolean isNew()
    {
	return _isNew;
    }

    boolean isModified()
    {
	return _modified;
    }

    void markModified()
    {
	_modified = true;
    }

    void commit()
    {
	_isNew = false;
	_modified = false;
	_removedElements.clear();
    }
 
    void markNew()
    {
	_isNew = true;
    }

    void removeElement(String id, Editable editable, Class forClass)
    {
	if(!editable.isNew())
	{
	    java.util.TreeSet set = (java.util.TreeSet)_removedElements.get(forClass);
	    if(set == null)
	    {
		set = new java.util.TreeSet();
		_removedElements.put(forClass, set);
	    }
	    set.add(id);
	}
    }
    
    String[] removedElements(Class forClass)
    {
	java.util.TreeSet set = (java.util.TreeSet)_removedElements.get(forClass);
	if(set == null)
	{
	    return new String[0];
	}
	else
	{
	    return (String[])set.toArray(new String[0]);
	}
    }

    Editable save()
    {
	try
	{
	    Editable result = (Editable)clone();
	    java.util.HashMap removedElements = new java.util.HashMap();
	    java.util.Iterator p = result._removedElements.entrySet().iterator();
	    while(p.hasNext())
	    {
		java.util.Map.Entry entry = (java.util.Map.Entry)p.next();
		Object val = ((java.util.TreeSet)entry.getValue()).clone();
		removedElements.put(entry.getKey(), val);
	    }
	    result._removedElements = removedElements;
	    return result;
	}
	catch(CloneNotSupportedException e)
	{
	    assert false;
	    return null;
	}
    }

    void restore(Editable clone)
    {
	_isNew = clone._isNew;
	_modified = clone._modified;
	_removedElements = clone._removedElements;
    }

    private boolean _isNew = false;
    private boolean _modified = false;

    private java.util.HashMap _removedElements = new java.util.HashMap();
}