114 lines
4.2 KiB
Java
114 lines
4.2 KiB
Java
/* AccessibleSelection.java -- aids in accessibly selecting components
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Copyright (C) 2000, 2002, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.accessibility;
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/**
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* If an object implements this interface then it must be able to control
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* the selection of its children. Accessibility software can use the
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* implementations of this interface to change the selection set of children.
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*
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* <p>The <code>AccessibleContext.getAccessibleSelection()</code> method should
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* return <code>null</code> if an object does not implement this interface.
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*
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* @author Eric Blake (ebb9@email.byu.edu)
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* @see Accessible
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* @see AccessibleContext
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* @see AccessibleContext#getAccessibleSelection()
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* @since 1.2
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* @status updated to 1.4
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*/
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public interface AccessibleSelection
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{
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/**
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* Returns the number of currently selected Accessible children, which may
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* be 0 if nothing is selected.
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*
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* @return the number of selected children
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*/
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int getAccessibleSelectionCount();
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/**
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* Returns the i-th selected child (not necessarily the overall i-th child)
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* of this Accessible object. If i is out of bounds, null is returned.
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*
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* @param i zero-based index of selected child objects
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* @return the Accessible child, or null
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* @see #getAccessibleSelectionCount()
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*/
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Accessible getAccessibleSelection(int i);
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/**
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* Determine if i-th overall child of this accessible object is selected.
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* If i is out of bounds, false is returned.
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*
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* @param i zero-based index of child objects
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* @return true if specified child exists and is selected
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*/
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boolean isAccessibleChildSelected(int i);
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/**
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* Select the specified child if it is not already selected, placing it in
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* the object's current selection. If the object does not support multiple
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* selections then the new selection replaces the old. If the specified
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* child is already selected, or is out of bounds, this method does nothing.
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*
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* @param i zero-based index of child objects
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*/
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void addAccessibleSelection(int i);
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/**
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* Unselect the specified child of this Accessible object. If the specified
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* child is not selected, or is out of bounds, this method does nothing.
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*
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* @param i the zero-based index of the child objects
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*/
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void removeAccessibleSelection(int i);
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/**
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* Unselect all children of this Accessible object.
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*/
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void clearAccessibleSelection();
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/**
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* Select all children of this Accessible object if the object supports
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* multiple selections or has a single child. Otherwise this does nothing.
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*/
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void selectAllAccessibleSelection();
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} // interface AccessibleSelection
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