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a13899c5 | 1 | /** @file\r |
2 | \r | |
3 | The file is used to create tree view sections\r | |
4 | \r | |
5 | Copyright (c) 2006, Intel Corporation\r | |
6 | All rights reserved. This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | package org.tianocore.frameworkwizard.platform.ui;\r | |
16 | import java.awt.GridLayout;\r | |
17 | import java.awt.Toolkit;\r | |
18 | \r | |
19 | import javax.swing.ImageIcon;\r | |
20 | import javax.swing.JPanel;\r | |
21 | import javax.swing.JScrollPane;\r | |
22 | import javax.swing.JTree;\r | |
23 | import javax.swing.tree.DefaultMutableTreeNode;\r | |
24 | import javax.swing.tree.DefaultTreeCellRenderer;\r | |
25 | import javax.swing.tree.DefaultTreeModel;\r | |
26 | import javax.swing.tree.MutableTreeNode;\r | |
27 | import javax.swing.tree.TreePath;\r | |
28 | import javax.swing.tree.TreeSelectionModel;\r | |
29 | import javax.swing.event.TreeModelEvent;\r | |
30 | import javax.swing.event.TreeModelListener;\r | |
31 | \r | |
32 | \r | |
33 | public class DynamicTree extends JPanel {\r | |
34 | protected DefaultMutableTreeNode rootNode;\r | |
35 | protected DefaultTreeModel treeModel;\r | |
36 | protected JTree tree;\r | |
37 | private Toolkit toolkit = Toolkit.getDefaultToolkit();\r | |
38 | \r | |
39 | public DynamicTree() {\r | |
40 | super(new GridLayout(1,0));\r | |
41 | \r | |
42 | rootNode = new DefaultMutableTreeNode("Sections");\r | |
43 | treeModel = new DefaultTreeModel(rootNode);\r | |
44 | treeModel.addTreeModelListener(new MyTreeModelListener());\r | |
45 | \r | |
46 | tree = new JTree(treeModel);\r | |
47 | DefaultTreeCellRenderer renderer = (DefaultTreeCellRenderer) tree.getCellRenderer();\r | |
48 | renderer.setOpenIcon(new ImageIcon("junk.gif"));\r | |
49 | renderer.setClosedIcon(new ImageIcon("junk.gif"));\r | |
50 | renderer.setLeafIcon(new ImageIcon("junk.gif"));\r | |
51 | tree.setEditable(true);\r | |
52 | tree.getSelectionModel().setSelectionMode\r | |
53 | (TreeSelectionModel.SINGLE_TREE_SELECTION);\r | |
54 | tree.setShowsRootHandles(true);\r | |
55 | \r | |
56 | JScrollPane scrollPane = new JScrollPane(tree);\r | |
57 | add(scrollPane);\r | |
58 | }\r | |
59 | \r | |
60 | /** Remove all nodes except the root node. */\r | |
61 | public void clear() {\r | |
62 | rootNode.removeAllChildren();\r | |
63 | treeModel.reload();\r | |
64 | }\r | |
65 | \r | |
66 | public String getCurrentNodeText() {\r | |
67 | DefaultMutableTreeNode currentNode = (DefaultMutableTreeNode)tree.getLastSelectedPathComponent();\r | |
68 | if (currentNode != null){\r | |
69 | return (String)currentNode.getUserObject();\r | |
70 | }\r | |
71 | return null;\r | |
72 | }\r | |
73 | /** Remove the currently selected node. */\r | |
74 | public void removeCurrentNode() {\r | |
75 | TreePath currentSelection = tree.getSelectionPath();\r | |
76 | if (currentSelection != null) {\r | |
77 | DefaultMutableTreeNode currentNode = (DefaultMutableTreeNode)\r | |
78 | (currentSelection.getLastPathComponent());\r | |
79 | MutableTreeNode parent = (MutableTreeNode)(currentNode.getParent());\r | |
80 | if (parent != null) {\r | |
81 | treeModel.removeNodeFromParent(currentNode);\r | |
82 | return;\r | |
83 | }\r | |
84 | } \r | |
85 | \r | |
86 | // Either there was no selection, or the root was selected.\r | |
87 | toolkit.beep();\r | |
88 | }\r | |
89 | \r | |
90 | /** Add child to the currently selected node. */\r | |
91 | public DefaultMutableTreeNode addObject(Object child) {\r | |
92 | DefaultMutableTreeNode parentNode = null;\r | |
93 | TreePath parentPath = tree.getSelectionPath();\r | |
94 | \r | |
95 | if (parentPath == null) {\r | |
96 | parentNode = rootNode;\r | |
97 | } else {\r | |
98 | parentNode = (DefaultMutableTreeNode)\r | |
99 | (parentPath.getLastPathComponent());\r | |
100 | }\r | |
101 | \r | |
102 | return addObject(parentNode, child, true);\r | |
103 | }\r | |
104 | \r | |
105 | public DefaultMutableTreeNode addObject(DefaultMutableTreeNode parent,\r | |
106 | Object child) {\r | |
107 | return addObject(parent, child, false);\r | |
108 | }\r | |
109 | \r | |
110 | public DefaultMutableTreeNode addObject(DefaultMutableTreeNode parent,\r | |
111 | Object child, \r | |
112 | boolean shouldBeVisible) {\r | |
113 | DefaultMutableTreeNode childNode = \r | |
114 | new DefaultMutableTreeNode(child);\r | |
115 | \r | |
116 | if (parent == null) {\r | |
117 | parent = rootNode;\r | |
118 | }\r | |
119 | \r | |
120 | treeModel.insertNodeInto(childNode, parent, \r | |
121 | parent.getChildCount());\r | |
122 | \r | |
123 | //Make sure the user can see the lovely new node.\r | |
124 | if (shouldBeVisible) {\r | |
125 | tree.scrollPathToVisible(new TreePath(childNode.getPath()));\r | |
126 | }\r | |
127 | return childNode;\r | |
128 | }\r | |
129 | \r | |
130 | class MyTreeModelListener implements TreeModelListener {\r | |
131 | public void treeNodesChanged(TreeModelEvent e) {\r | |
132 | DefaultMutableTreeNode node;\r | |
133 | node = (DefaultMutableTreeNode)\r | |
134 | (e.getTreePath().getLastPathComponent());\r | |
135 | \r | |
136 | /*\r | |
137 | * If the event lists children, then the changed\r | |
138 | * node is the child of the node we've already\r | |
139 | * gotten. Otherwise, the changed node and the\r | |
140 | * specified node are the same.\r | |
141 | */\r | |
142 | try {\r | |
143 | int index = e.getChildIndices()[0];\r | |
144 | node = (DefaultMutableTreeNode)\r | |
145 | (node.getChildAt(index));\r | |
146 | } catch (NullPointerException exc) {}\r | |
147 | \r | |
148 | System.out.println("The user has finished editing the node.");\r | |
149 | System.out.println("New value: " + node.getUserObject());\r | |
150 | }\r | |
151 | public void treeNodesInserted(TreeModelEvent e) {\r | |
152 | }\r | |
153 | public void treeNodesRemoved(TreeModelEvent e) {\r | |
154 | }\r | |
155 | public void treeStructureChanged(TreeModelEvent e) {\r | |
156 | }\r | |
157 | }\r | |
158 | }\r | |
159 | \r | |
160 | \r |