1 /*
2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
27 import java.awt.*;
28 import java.awt.event.*;
29 import java.beans.JavaBean;
30 import java.beans.BeanProperty;
31 import java.beans.ConstructorProperties;
32 import java.beans.PropertyChangeEvent;
33 import java.beans.PropertyChangeListener;
34 import java.io.*;
35 import java.util.*;
36 import javax.swing.event.*;
37 import javax.swing.plaf.*;
38 import javax.swing.tree.*;
39 import javax.swing.text.Position;
40 import javax.accessibility.*;
41
42 import sun.swing.SwingUtilities2;
43 import sun.swing.SwingUtilities2.Section;
44 import static sun.swing.SwingUtilities2.Section.*;
45
46 /**
47 * <a name="jtree_description"></a>
48 * A control that displays a set of hierarchical data as an outline.
49 * You can find task-oriented documentation and examples of using trees in
50 * <a href="http://docs.oracle.com/javase/tutorial/uiswing/components/tree.html">How to Use Trees</a>,
51 * a section in <em>The Java Tutorial.</em>
52 * <p>
53 * A specific node in a tree can be identified either by a
54 * <code>TreePath</code> (an object
55 * that encapsulates a node and all of its ancestors), or by its
56 * display row, where each row in the display area displays one node.
57 * An <i>expanded</i> node is a non-leaf node (as identified by
58 * <code>TreeModel.isLeaf(node)</code> returning false) that will displays
59 * its children when all its ancestors are <i>expanded</i>.
60 * A <i>collapsed</i>
61 * node is one which hides them. A <i>hidden</i> node is one which is
62 * under a collapsed ancestor. All of a <i>viewable</i> nodes parents
63 * are expanded, but may or may not be displayed. A <i>displayed</i> node
64 * is both viewable and in the display area, where it can be seen.
65 * </p>
66 * The following <code>JTree</code> methods use "visible" to mean "displayed":
67 * <ul>
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1 /*
2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
27 import java.awt.*;
28 import java.awt.event.*;
29 import java.beans.JavaBean;
30 import java.beans.BeanProperty;
31 import java.beans.ConstructorProperties;
32 import java.beans.PropertyChangeEvent;
33 import java.beans.PropertyChangeListener;
34 import java.io.*;
35 import java.util.*;
36 import javax.swing.event.*;
37 import javax.swing.plaf.*;
38 import javax.swing.tree.*;
39 import javax.swing.text.Position;
40 import javax.accessibility.*;
41
42 import sun.swing.SwingUtilities2;
43 import sun.swing.SwingUtilities2.Section;
44 import static sun.swing.SwingUtilities2.Section.*;
45
46 /**
47 * <a id="jtree_description"></a>
48 * A control that displays a set of hierarchical data as an outline.
49 * You can find task-oriented documentation and examples of using trees in
50 * <a href="http://docs.oracle.com/javase/tutorial/uiswing/components/tree.html">How to Use Trees</a>,
51 * a section in <em>The Java Tutorial.</em>
52 * <p>
53 * A specific node in a tree can be identified either by a
54 * <code>TreePath</code> (an object
55 * that encapsulates a node and all of its ancestors), or by its
56 * display row, where each row in the display area displays one node.
57 * An <i>expanded</i> node is a non-leaf node (as identified by
58 * <code>TreeModel.isLeaf(node)</code> returning false) that will displays
59 * its children when all its ancestors are <i>expanded</i>.
60 * A <i>collapsed</i>
61 * node is one which hides them. A <i>hidden</i> node is one which is
62 * under a collapsed ancestor. All of a <i>viewable</i> nodes parents
63 * are expanded, but may or may not be displayed. A <i>displayed</i> node
64 * is both viewable and in the display area, where it can be seen.
65 * </p>
66 * The following <code>JTree</code> methods use "visible" to mean "displayed":
67 * <ul>
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