/*
 * Copyright 1999-2005 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.
 */

/* $Id$ */


/*
 * This file is part of the RTF library of the FOP project, which was originally
 * created by Bertrand Delacretaz <bdelacretaz@codeconsult.ch> and by other
 * contributors to the jfor project (www.jfor.org), who agreed to donate jfor to
 * the FOP project.
 */

package org.apache.fop.render.rtf.rtflib.rtfdoc;

/**  Used to get information about tables, for example when handling nested tables
 *  @author Bertrand Delacretaz bdelacretaz@codeconsult.ch
 */

public interface ITableColumnsInfo {
    /** value for invalid column width */
    float INVALID_COLUM_WIDTH = 200f;

    /** reset the column iteration index, meant to be called when creating a new row */
    void selectFirstColumn();

    /** increment the column iteration index */
    void selectNextColumn();

    /** get current column width according to column iteration index
     *  @return INVALID_COLUMN_WIDTH if we cannot find the value
     */
    float getColumnWidth();

    /** @return current column iteration index */
    int getColumnIndex();

    /** @return number of columns */
    int getNumberOfColumns();
}