gcc/libjava/classpath/javax/accessibility/AccessibleTable.java

/* AccessibleTable.java -- aids in accessibly manipulating tables
   Copyright (C) 2002, 2005  Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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WITHOUT ANY WARRANTY; without even the implied warranty of
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General Public License for more details.

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02110-1301 USA.

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permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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package javax.accessibility;

/**
 * Objects which present information in a 2-dimensional table should implement
 * this interface. Accessibility software can use the implementations of
 * this interface to navigate and change the attributes of the table.
 *
 * <p>The <code>AccessibleContext.getAccessibleTable()</code> method
 * should return <code>null</code> if an object does not implement this
 * interface.
 *
 * @author Eric Blake (ebb9@email.byu.edu)
 * @see Accessible
 * @see AccessibleContext
 * @see AccessibleContext#getAccessibleTable()
 * @since 1.2
 * @status updated to 1.4
 */
public interface AccessibleTable
{
  /**
   * Return the caption for the table, or null if unknown.
   *
   * @return the table caption
   */
  Accessible getAccessibleCaption();

  /**
   * Set the table caption.
   *
   * @param caption the new caption
   */
  void setAccessibleCaption(Accessible caption);

  /**
   * Return the summary description of the table, or null if unknown.
   *
   * @return the summary description
   */
  Accessible getAccessibleSummary();

  /**
   * Set the table summary description.
   *
   * @param summary the new summary
   */
  void setAccessibleSummary(Accessible summary);

  /**
   * Return the number of rows in the table.
   *
   * @return the row count
   */
  int getAccessibleRowCount();

  /**
   * Return the number of columns in the table.
   *
   * @return the column count
   */
  int getAccessibleColumnCount();

  /**
   * Return the cell at the specified row and column, or null if out of bounds.
   *
   * @param r the 0-based row index
   * @param c the 0-based column index
   * @return the cell at (r,c)
   */
  Accessible getAccessibleAt(int r, int c);

  /**
   * Returns the number of merged rows occupied at the specified row and
   * column, or 0 if out of bounds.
   *
   * @param r the 0-based row index
   * @param c the 0-based column index
   * @return the row extent at (r,c)
   */
  int getAccessibleRowExtentAt(int r, int c);

  /**
   * Returns the number of merged columns occupied at the specified row and
   * column, or 0 if out of bounds.
   *
   * @param r the 0-based row index
   * @param c the 0-based column index
   * @return the column extent at (r,c)
   */
  int getAccessibleColumnExtentAt(int r, int c);

  /**
   * Return the row headers as a table.
   *
   * @return the row headers, or null if there are none
   */
  AccessibleTable getAccessibleRowHeader();

  /**
   * Set the row headers.
   *
   * @param header the new row header
   */
  // XXX What happens if header is incompatible size?
  void setAccessibleRowHeader(AccessibleTable header);

  /**
   * Return the column headers as a table.
   *
   * @return the column headers, or null if there are none
   */
  AccessibleTable getAccessibleColumnHeader();

  /**
   * Set the column headers.
   *
   * @param header the new column header
   */
  // XXX What happens if header is incompatible size?
  void setAccessibleColumnHeader(AccessibleTable header);

  /**
   * Return the description of a row, or null if there is none or the index
   * is out of bounds.
   *
   * @param r the 0-based row index
   * @return the description
   */
  Accessible getAccessibleRowDescription(int r);

  /**
   * Set the description of a row. Does nothing if the index is invalid.
   *
   * @param r the 0-based row index
   * @param description the new description
   */
  void setAccessibleRowDescription(int r, Accessible description);

  /**
   * Return the description of a column, or null if there is none or the index
   * is out of bounds.
   *
   * @param c the 0-based column index
   * @return the description
   */
  Accessible getAccessibleColumnDescription(int c);

  /**
   * Set the description of a column. Does nothing if the index is invalid.
   *
   * @param c the 0-based column index
   * @param description the new description
   */
  void setAccessibleColumnDescription(int c, Accessible description);

  /**
   * Return whether the cell at the specified location is selected. Returns
   * false if the index is out of bounds.
   *
   * @param r the 0-based row index
   * @param c the 0-based column index
   * @return true if that cell is selected
   */
  boolean isAccessibleSelected(int r, int c);

  /**
   * Return whether the specified row is selected. Returns false if the
   * index is out of bounds.
   *
   * @param r the 0-based row index
   * @return true if that row is selected
   */
  boolean isAccessibleRowSelected(int r);

  /**
   * Return whether the specified column is selected. Returns false if the
   * index is out of bounds.
   *
   * @param c the 0-based column index
   * @return true if that column is selected
   */
  boolean isAccessibleColumnSelected(int c);

  /**
   * Return the selected rows. May be null or empty if there is no selection.
   *
   * @return the indices of selected rows
   */
  int[] getSelectedAccessibleRows();

  /**
   * Return the selected columns. May be null or empty if there is no
   * selection.
   *
   * @return the indices of selected columns
   */
  int[] getSelectedAccessibleColumns();
} // interface AccessibleTable