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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 java.util.Iterator;

/**
 * The main interface defining the abstraction containing the table data and
 * state.
 * 
 * @author mindbridge
 */
public interface ITableModel
{

    /**
     * Method getColumnModel.
     * 
     * @return ITableColumnModel the column model of the table
     */
    ITableColumnModel getColumnModel();

    /**
     * Method getSortingState.
     * 
     * @return ITableSortingState the sorting state of the table
     */
    ITableSortingState getSortingState();

    /**
     * Method getPagingState.
     * 
     * @return ITablePagingState the paging state of the table
     */
    ITablePagingState getPagingState();

    /**
     * Method getPageCount.
     * 
     * @return int the number of pages this table would have given the current
     *         data and paging state
     */
    int getPageCount();

    /**
     * Method getCurrentPageRows.
     * 
     * @return Iterator the rows in the current table page given the current
     *         data, sorting, and paging state
     */
    Iterator getCurrentPageRows();

    /**
     * Returns the total number of rows / values this model is managing.
     *
     * @return The total number of rows - if known.
     */
    int getRowCount();
}