java/10 : java.desktop/javax/swing/event/TreeSelectionEvent.java

TreeSelectionEvent
https://openjdk.java.net/
GPLv2 + Classpath Exception
/*
 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package javax.swing.event;

import java.util.EventObject;
import javax.swing.tree.TreePath;

An event that characterizes a change in the current
selection.  The change is based on any number of paths.
TreeSelectionListeners will generally query the source of
the event for the new selected status of each potentially
changed row.

Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing.  As of 1.4, support for long term storage
of all JavaBeans™
has been added to the java.beans package. Please see XMLEncoder. 
Author: Scott Violet
See Also: TreeSelectionListener
TreeSelectionModel/**
 * An event that characterizes a change in the current
 * selection.  The change is based on any number of paths.
 * TreeSelectionListeners will generally query the source of
 * the event for the new selected status of each potentially
 * changed row.
 * <p>
 * <strong>Warning:</strong>
 * Serialized objects of this class will not be compatible with
 * future Swing releases. The current serialization support is
 * appropriate for short term storage or RMI between applications running
 * the same version of Swing.  As of 1.4, support for long term storage
 * of all JavaBeans&trade;
 * has been added to the <code>java.beans</code> package.
 * Please see {@link java.beans.XMLEncoder}.
 *
 * @see TreeSelectionListener
 * @see javax.swing.tree.TreeSelectionModel
 *
 * @author Scott Violet
 */
@SuppressWarnings("serial") // Same-version serialization only
public class TreeSelectionEvent extends EventObject
{
    Paths this event represents. /** Paths this event represents. */
    protected TreePath[]     paths;
    For each path identifies if that path is in fact new. /** For each path identifies if that path is in fact new. */
    protected boolean[]       areNew;
    leadSelectionPath before the paths changed, may be null. /** leadSelectionPath before the paths changed, may be null. */
    protected TreePath        oldLeadSelectionPath;
    leadSelectionPath after the paths changed, may be null. /** leadSelectionPath after the paths changed, may be null. */
    protected TreePath        newLeadSelectionPath;

    Represents a change in the selection of a TreeSelectionModel. paths identifies the paths that have been either added or removed from the selection. 
Params: source – source of event
paths – the paths that have changed in the selection
areNew – a boolean array indicating whether the paths in paths are new to the selection
oldLeadSelectionPath – the previous lead selection path
newLeadSelectionPath – the new lead selection path/**
      * Represents a change in the selection of a {@code TreeSelectionModel}.
      * {@code paths} identifies the paths that have been either added or
      * removed from the selection.
      *
      * @param source source of event
      * @param paths the paths that have changed in the selection
      * @param areNew a {@code boolean} array indicating whether the paths in
      *               {@code paths} are new to the selection
      * @param oldLeadSelectionPath the previous lead selection path
      * @param newLeadSelectionPath the new lead selection path
      */
    public TreeSelectionEvent(Object source, TreePath[] paths,
                              boolean[] areNew, TreePath oldLeadSelectionPath,
                              TreePath newLeadSelectionPath)
    {
        super(source);
        this.paths = paths;
        this.areNew = areNew;
        this.oldLeadSelectionPath = oldLeadSelectionPath;
        this.newLeadSelectionPath = newLeadSelectionPath;
    }

    Represents a change in the selection of a TreeSelectionModel. path identifies the path that has been either added or removed from the selection. 
Params: source – source of event
path – the path that has changed in the selection
isNew – whether or not the path is new to the selection, false
             means path was removed from the selection.
oldLeadSelectionPath – the previous lead selection path
newLeadSelectionPath – the new lead selection path/**
      * Represents a change in the selection of a {@code TreeSelectionModel}.
      * {@code path} identifies the path that has been either added or
      * removed from the selection.
      *
      * @param source source of event
      * @param path the path that has changed in the selection
      * @param isNew whether or not the path is new to the selection, false
      *              means path was removed from the selection.
      * @param oldLeadSelectionPath the previous lead selection path
      * @param newLeadSelectionPath the new lead selection path
      */
    public TreeSelectionEvent(Object source, TreePath path, boolean isNew,
                              TreePath oldLeadSelectionPath,
                              TreePath newLeadSelectionPath)
    {
        super(source);
        paths = new TreePath[1];
        paths[0] = path;
        areNew = new boolean[1];
        areNew[0] = isNew;
        this.oldLeadSelectionPath = oldLeadSelectionPath;
        this.newLeadSelectionPath = newLeadSelectionPath;
    }

    Returns the paths that have been added or removed from the selection.
Returns: copy of the array of TreePath obects for this event./**
      * Returns the paths that have been added or removed from the selection.
      *
      * @return copy of the array of {@code TreePath} obects for this event.
      */
    public TreePath[] getPaths()
    {
        int                  numPaths;
        TreePath[]          retPaths;

        numPaths = paths.length;
        retPaths = new TreePath[numPaths];
        System.arraycopy(paths, 0, retPaths, 0, numPaths);
        return retPaths;
    }

    Returns the first path element.
Returns: the first TreePath element represented by this event/**
      * Returns the first path element.
      *
      * @return the first {@code TreePath} element represented by this event
      */
    public TreePath getPath()
    {
        return paths[0];
    }

    Returns whether the path identified by getPath was added to the selection. A return value of true indicates the path identified by getPath was added to the selection. A return value of false indicates 
getPath was selected, but is no longer selected. 
Returns: true if getPath was added to the selection, false otherwise/**
     * Returns whether the path identified by {@code getPath} was
     * added to the selection.  A return value of {@code true}
     * indicates the path identified by {@code getPath} was added to
     * the selection. A return value of {@code false} indicates {@code
     * getPath} was selected, but is no longer selected.
     *
     * @return {@code true} if {@code getPath} was added to the selection,
     *         {@code false} otherwise
     */
    public boolean isAddedPath() {
        return areNew[0];
    }

    Returns whether the specified path was added to the selection. A return value of true indicates the path identified by path was added to the selection. A return value of false indicates path is no longer selected. This method is only valid for the paths returned from getPaths(); invoking with a path not included in getPaths() throws an IllegalArgumentException. 
Params: path – the path to test
Throws: IllegalArgumentException – if path is not contained in getPaths
See Also: getPaths
Returns: true if path was added to the selection, false otherwise/**
     * Returns whether the specified path was added to the selection.
     * A return value of {@code true} indicates the path identified by
     * {@code path} was added to the selection. A return value of
     * {@code false} indicates {@code path} is no longer selected. This method
     * is only valid for the paths returned from {@code getPaths()}; invoking
     * with a path not included in {@code getPaths()} throws an
     * {@code IllegalArgumentException}.
     *
     * @param path the path to test
     * @return {@code true} if {@code path} was added to the selection,
     *         {@code false} otherwise
     * @throws IllegalArgumentException if {@code path} is not contained
     *         in {@code getPaths}
     * @see #getPaths
     */
    public boolean isAddedPath(TreePath path) {
        for(int counter = paths.length - 1; counter >= 0; counter--)
            if(paths[counter].equals(path))
                return areNew[counter];
        throw new IllegalArgumentException("path is not a path identified by the TreeSelectionEvent");
    }

    Returns whether the path at getPaths()[index] was added to the selection. A return value of true indicates the path was added to the selection. A return value of false indicates the path is no longer selected. 
Params: index – the index of the path to test
Throws: IllegalArgumentException – if index is outside the range of getPaths
See Also: getPaths
Returns: true if the path was added to the selection, false otherwise
Since: 1.3/**
     * Returns whether the path at {@code getPaths()[index]} was added
     * to the selection.  A return value of {@code true} indicates the
     * path was added to the selection. A return value of {@code false}
     * indicates the path is no longer selected.
     *
     * @param index the index of the path to test
     * @return {@code true} if the path was added to the selection,
     *         {@code false} otherwise
     * @throws IllegalArgumentException if index is outside the range of
     *         {@code getPaths}
     * @see #getPaths
     *
     * @since 1.3
     */
    public boolean isAddedPath(int index) {
        if (paths == null || index < 0 || index >= paths.length) {
            throw new IllegalArgumentException("index is beyond range of added paths identified by TreeSelectionEvent");
        }
        return areNew[index];
    }

    Returns the path that was previously the lead path.
Returns: a TreePath containing the old lead selection path/**
     * Returns the path that was previously the lead path.
     *
     * @return a {@code TreePath} containing the old lead selection path
     */
    public TreePath getOldLeadSelectionPath() {
        return oldLeadSelectionPath;
    }

    Returns the current lead path.
Returns: a TreePath containing the new lead selection path/**
     * Returns the current lead path.
     *
     * @return a {@code TreePath} containing the new lead selection path
     */
    public TreePath getNewLeadSelectionPath() {
        return newLeadSelectionPath;
    }

    Returns a copy of the receiver, but with the source being newSource.
Params: newSource – source of event
Returns: an Object which is a copy of this event with the source being the newSource provided/**
     * Returns a copy of the receiver, but with the source being newSource.
     *
     * @param newSource source of event
     * @return an {@code Object} which is a copy of this event with the source
     *         being the {@code newSource} provided
     */
    public Object cloneWithSource(Object newSource) {
      // Fix for IE bug - crashing
      return new TreeSelectionEvent(newSource, paths, areNew,
                                    oldLeadSelectionPath,
                                    newLeadSelectionPath);
    }
}
Author:	Scott Violet
See Also:	TreeSelectionListener TreeSelectionModel
Params:	path – the path to test
Throws:	IllegalArgumentException – if `path` is not contained in `getPaths`
See Also:	getPaths
Returns:	`true` if `path` was added to the selection, `false` otherwise
Params:	index – the index of the path to test
Throws:	IllegalArgumentException – if index is outside the range of `getPaths`
See Also:	getPaths
Returns:	`true` if the path was added to the selection, `false` otherwise
Since:	1.3
Params:	newSource – source of event
Returns:	an `Object` which is a copy of this event with the source being the `newSource` provided
/

java/ 10/ java.desktop/javax/swing/event/TreeSelectionEvent.java
