jsampler/view/AbstractTreeModel.java

/*
 *   JSampler - a java front-end for LinuxSampler
 *
 *   Copyright (C) 2011 Grigor Iliev <grigor@grigoriliev.com>
 *
 *   This file is part of JSampler.
 *
 *   JSampler is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License version 2
 *   as published by the Free Software Foundation.
 *
 *   JSampler 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 for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with JSampler; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *   MA  02111-1307  USA
 */
package org.jsampler.view;

import java.util.ArrayList;
import java.util.Vector;
import javax.swing.event.TreeModelEvent;
import javax.swing.event.TreeModelListener;
import javax.swing.tree.TreeModel;
import javax.swing.tree.TreeNode;

/**
 *
 * @author Grigor Iliev
 */
public abstract class AbstractTreeModel implements TreeModel {
        private ArrayList<TreeModelListener> listeners = new ArrayList<TreeModelListener>();
        
        
        
        // Tree model methods
        @Override
        public void
        addTreeModelListener(TreeModelListener l) {
                listeners.add(l);
        }
        
        @Override
        public void
        removeTreeModelListener(TreeModelListener l) {
                listeners.remove(l);
        }
        
        @Override
        public boolean
        isLeaf(Object node) { return ((TreeNode)node).isLeaf(); }
        
        @Override
        public Object
        getChild(Object parent, int index) {
                return ((TreeNode)parent).getChildAt(index);
        }
        
        @Override
        public int
        getChildCount(Object parent) {
                return ((TreeNode)parent).getChildCount();
        }
        
        @Override
        public int
        getIndexOfChild(Object parent, Object child) {
                if(parent == null || child == null) return -1;
                return ((TreeNode)parent).getIndex((TreeNode)child);
        }
        //////////
        
        protected Object[]
        getPathToRoot(TreeNode node) {
                Vector v = new Vector();
                
                while(node != null) {
                        v.insertElementAt(node, 0);
                        if(node == getRoot()) break;
                        node = node.getParent();
                }
                
                return v.toArray(new Object[v.size()]);
        }
        
        protected void
        fireNodeInserted(TreeNode node, int index) {
                Object[] path = getPathToRoot(node.getParent());
                
                int[] idxs = { index };
                Object[] objs = { node };
                TreeModelEvent e = new TreeModelEvent(this, path, idxs, objs);
                for(TreeModelListener l : listeners) {
                        l.treeNodesInserted(e);
                }
        }
        
        protected void
        fireNodeChanged(TreeNode node, int index) {
                Object[] path = getPathToRoot(node.getParent());
                int[] idxs = { index };
                Object[] objs = { node };
                TreeModelEvent e = new TreeModelEvent(this, path, idxs, objs);
                for(TreeModelListener l : listeners) {
                        l.treeNodesChanged(e);
                }
        }
        
        protected void
        fireNodeRemoved(TreeNode parent, TreeNode node, int index) {
                Object[] path = getPathToRoot(parent);
                int[] idxs = { index };
                Object[] objs = { node };
                TreeModelEvent e = new TreeModelEvent(this, path, idxs, objs);
                for(int i = listeners.size() - 1; i >=0; i--) {
                        listeners.get(i).treeNodesRemoved(e);
                }
        }
        
        protected void
        fireNodeStructureChanged(TreeNode node) {
                Object[] path = getPathToRoot(node);
                Object[] objs = { node };
                TreeModelEvent e = new TreeModelEvent(this, path);
                for(TreeModelListener l : listeners) {
                        l.treeStructureChanged(e);
                }
        }
}
1	iliev	2200	/*
2			* JSampler - a java front-end for LinuxSampler
3			*
4			* Copyright (C) 2011 Grigor Iliev <grigor@grigoriliev.com>
5			*
6			* This file is part of JSampler.
7			*
8			* JSampler is free software; you can redistribute it and/or modify
9			* it under the terms of the GNU General Public License version 2
10			* as published by the Free Software Foundation.
11			*
12			* JSampler is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with JSampler; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20			* MA 02111-1307 USA
21			*/
22			package org.jsampler.view;
23
24			import java.util.ArrayList;
25			import java.util.Vector;
26			import javax.swing.event.TreeModelEvent;
27			import javax.swing.event.TreeModelListener;
28			import javax.swing.tree.TreeModel;
29			import javax.swing.tree.TreeNode;
30
31			/**
32			*
33			* @author Grigor Iliev
34			*/
35			public abstract class AbstractTreeModel implements TreeModel {
36			private ArrayList<TreeModelListener> listeners = new ArrayList<TreeModelListener>();
37
38
39
40			// Tree model methods
41			@Override
42			public void
43			addTreeModelListener(TreeModelListener l) {
44			listeners.add(l);
45			}
46
47			@Override
48			public void
49			removeTreeModelListener(TreeModelListener l) {
50			listeners.remove(l);
51			}
52
53			@Override
54			public boolean
55			isLeaf(Object node) { return ((TreeNode)node).isLeaf(); }
56
57			@Override
58			public Object
59			getChild(Object parent, int index) {
60			return ((TreeNode)parent).getChildAt(index);
61			}
62
63			@Override
64			public int
65			getChildCount(Object parent) {
66			return ((TreeNode)parent).getChildCount();
67			}
68
69			@Override
70			public int
71			getIndexOfChild(Object parent, Object child) {
72			if(parent == null \|\| child == null) return -1;
73			return ((TreeNode)parent).getIndex((TreeNode)child);
74			}
75			//////////
76
77			protected Object[]
78			getPathToRoot(TreeNode node) {
79			Vector v = new Vector();
80
81			while(node != null) {
82			v.insertElementAt(node, 0);
83			if(node == getRoot()) break;
84			node = node.getParent();
85			}
86
87			return v.toArray(new Object[v.size()]);
88			}
89
90			protected void
91			fireNodeInserted(TreeNode node, int index) {
92			Object[] path = getPathToRoot(node.getParent());
93
94			int[] idxs = { index };
95			Object[] objs = { node };
96			TreeModelEvent e = new TreeModelEvent(this, path, idxs, objs);
97			for(TreeModelListener l : listeners) {
98			l.treeNodesInserted(e);
99			}
100			}
101
102			protected void
103			fireNodeChanged(TreeNode node, int index) {
104			Object[] path = getPathToRoot(node.getParent());
105			int[] idxs = { index };
106			Object[] objs = { node };
107			TreeModelEvent e = new TreeModelEvent(this, path, idxs, objs);
108			for(TreeModelListener l : listeners) {
109			l.treeNodesChanged(e);
110			}
111			}
112
113			protected void
114			fireNodeRemoved(TreeNode parent, TreeNode node, int index) {
115			Object[] path = getPathToRoot(parent);
116			int[] idxs = { index };
117			Object[] objs = { node };
118			TreeModelEvent e = new TreeModelEvent(this, path, idxs, objs);
119			for(int i = listeners.size() - 1; i >=0; i--) {
120			listeners.get(i).treeNodesRemoved(e);
121			}
122			}
123
124			protected void
125			fireNodeStructureChanged(TreeNode node) {
126			Object[] path = getPathToRoot(node);
127			Object[] objs = { node };
128			TreeModelEvent e = new TreeModelEvent(this, path);
129			for(TreeModelListener l : listeners) {
130			l.treeStructureChanged(e);
131			}
132			}
133			}