/*
* Copyright 2009 Google Inc.
*
* 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.google.gwt.gen2.table.client.property;
/**
* A simple property of a column.
*/
public abstract class ColumnProperty {
/**
* Type class used to register properties.
*/
public abstract static class Type<P extends ColumnProperty> {
private static int nextHashCode;
private final int index;
/**
* Construct a new type.
*/
public Type() {
index = ++nextHashCode;
}
/**
* Get the default property value of this type. This method should never
* return null.
*
* @return the default (non null) property value
*/
public abstract P getDefault();
@Override
public final int hashCode() {
return index;
}
}
}