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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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package javax.accessibility;
/**
* This AccessibleSelection interface
* provides the standard mechanism for an assistive technology to determine
* what the current selected children are, as well as modify the selection set.
* Any object that has children that can be selected should support
* the AccessibleSelection interface. Applications can determine if an object supports the
* AccessibleSelection interface by first obtaining its AccessibleContext (see
* {@link Accessible}) and then calling the
* {@link AccessibleContext#getAccessibleSelection} method.
* If the return value is not null, the object supports this interface.
*
* @see Accessible
* @see Accessible#getAccessibleContext
* @see AccessibleContext
* @see AccessibleContext#getAccessibleSelection
*
* @author Peter Korn
* @author Hans Muller
* @author Willie Walker
*/
public interface AccessibleSelection {
/**
* Returns the number of Accessible children currently selected.
* If no children are selected, the return value will be 0.
*
* @return the number of items currently selected.
*/
public int getAccessibleSelectionCount();
/**
* Returns an Accessible representing the specified selected child
* of the object. If there isn't a selection, or there are
* fewer children selected than the integer passed in, the return
* value will be null.
* <p>Note that the index represents the i-th selected child, which
* is different from the i-th child.
*
* @param i the zero-based index of selected children
* @return the i-th selected child
* @see #getAccessibleSelectionCount
*/
public Accessible getAccessibleSelection(int i);
/**
* Determines if the current child of this object is selected.
*
* @return true if the current child of this object is selected; else false.
* @param i the zero-based index of the child in this Accessible object.
* @see AccessibleContext#getAccessibleChild
*/
public boolean isAccessibleChildSelected(int i);
/**
* Adds the specified Accessible child of the object to the object's
* selection. If the object supports multiple selections,
* the specified child is added to any existing selection, otherwise
* it replaces any existing selection in the object. If the
* specified child is already selected, this method has no effect.
*
* @param i the zero-based index of the child
* @see AccessibleContext#getAccessibleChild
*/
public void addAccessibleSelection(int i);
/**
* Removes the specified child of the object from the object's
* selection. If the specified item isn't currently selected, this
* method has no effect.
*
* @param i the zero-based index of the child
* @see AccessibleContext#getAccessibleChild
*/
public void removeAccessibleSelection(int i);
/**
* Clears the selection in the object, so that no children in the
* object are selected.
*/
public void clearAccessibleSelection();
/**
* Causes every child of the object to be selected
* if the object supports multiple selections.
*/
public void selectAllAccessibleSelection();
}