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// Copyright 2004, 2005 The Apache Software Foundation
//
// 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 org.apache.tapestry.contrib.table.model;

import org.apache.tapestry.IComponent;

/**
 * A Tapestry component that provides the current table model. This interface is
 * used for obtaining the table model source by components wrapped by it, as
 * well as by external renderers, such as those provided by the column
 * implementations
 * 
 * @author mindbridge
 */
public interface ITableModelSource extends IComponent
{

    String TABLE_MODEL_SOURCE_ATTRIBUTE = "org.apache.tapestry.contrib.table.model.ITableModelSource";
    
    /**
     * Returns the table model currently used.
     * 
     * @return ITableModel the current table model
     */
    ITableModel getTableModel();

    /**
     * Notifies the model source that the model state has changed, and that it
     * should consider saving it.
     * 
     * This method was added to allow using the table within a Block when the
     * pageBeginRender() listener of the implementation will not be called and
     * automatic state storage will therefore be hard to implement.
     */
    void fireObservedStateChange();

    /**
     * Stores the provided table action.
     *
     * @param action
     *          The action to store.
     */
    void storeTableAction(ITableAction action);

}