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Echo2 bundled with Echo2_Extras, Echo2_FileTransfer and echopointing and various improvements/bugfixes
/*
* This file is part of the Echo Point Project. This project is a collection of
* Components that have extended the Echo Web Application Framework.
*
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or the
* GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which
* case the provisions of the GPL or the LGPL are applicable instead of those
* above. If you wish to allow use of your version of this file only under the
* terms of either the GPL or the LGPL, and not to allow others to use your
* version of this file under the terms of the MPL, indicate your decision by
* deleting the provisions above and replace them with the notice and other
* provisions required by the GPL or the LGPL. If you do not delete the
* provisions above, a recipient may use your version of this file under the
* terms of any one of the MPL, the GPL or the LGPL.
*/
/*
* The design paradigm, class name and some code used within have been taken
* from the java.net JDNC project. This project is licensed under the LGPL and
* is Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* California 95054, U.S.A. All rights reserved.
*
* This file was made part of the EchoPoint project on the 15/07/2005.
*
*/
package echopointng.treetable;
import echopointng.tree.TreeModelEvent;
import echopointng.tree.TreeModelListener;
import echopointng.tree.TreeNode;
import echopointng.tree.TreePath;
/**
* DefaultTreeTableModel is a concrete implementation of AbstractTreeTableModel
* and is provided purely as a convenience. Applications that use TreeTable
* are expected to provide their own implementation of a TreeTableModel
,
* perhaps by extending this class.
*
* @author Ramesh Gupta
*/
public class DefaultTreeTableModel extends AbstractTreeTableModel {
protected boolean asksAllowsChildren;
public DefaultTreeTableModel() {
this(null);
}
public DefaultTreeTableModel(TreeNode root) {
this(root, false);
}
public DefaultTreeTableModel(TreeNode root, boolean asksAllowsChildren) {
super(root);
this.asksAllowsChildren = asksAllowsChildren;
}
public void setRoot(TreeNode root) {
Object oldRoot = this.root;
this.root = root;
if (root == null && oldRoot != null) {
fireTreeStructureChanged(this, null);
}
else {
nodeStructureChanged(root);
}
}
/*
* Notifies all listeners that have registered interest for
* notification on this event type. The event instance
* is lazily created using the parameters passed into
* the fire method.
*
* @param source the node where the tree model has changed
* @param path the path to the root node
* @see EventListenerList
*/
private void fireTreeStructureChanged(Object source, TreePath path) {
// Guaranteed to return a non-null array
Object[] listeners = listenerList.getListeners(TreeModelListener.class);
TreeModelEvent e = null;
// Process the listeners last to first, notifying
// those that are interested in this event
for (int i = listeners.length - 2; i >= 0; i -= 2) {
if (listeners[i] == TreeModelListener.class) {
// Lazily create the event:
if (e == null) {
e = new TreeModelEvent(source, path);
}
((TreeModelListener) listeners[i + 1]).treeStructureChanged(e);
}
}
}
public boolean asksAllowsChildren() {
return asksAllowsChildren;
}
public void setAsksAllowsChildren(boolean newValue) {
asksAllowsChildren = newValue;
}
/**
* @see echopointng.treetable.TreeTableModel#getValueAt(java.lang.Object, int)
*/
public Object getValueAt(Object node, int column) {
/**@todo Implement this org.jdesktopx.swing.treetable.TreeTableModel abstract method*/
return node + "@column " + column;
}
/**
* @param node
* @return true if the specified node is a leaf node; false otherwise
*/
public boolean isLeaf(Object node) {
if (node instanceof TreeNode) {
if (asksAllowsChildren) {
return!((TreeNode) node).getAllowsChildren();
}
}
return super.isLeaf(node);
}
/**
* Invoke this method after you've inserted some TreeNodes into
* node. childIndices should be the index of the new elements and
* must be sorted in ascending order.
*/
public void nodesWereInserted(TreeNode node, int[] childIndices) {
if (listenerList != null && node != null && childIndices != null
&& childIndices.length > 0) {
int cCount = childIndices.length;
Object[] newChildren = new Object[cCount];
for (int counter = 0; counter < cCount; counter++)
newChildren[counter] = node.getChildAt(childIndices[counter]);
fireTreeNodesInserted(this, getPathToRoot(node), childIndices,
newChildren);
}
}
/**
* Invoke this method after you've removed some TreeNodes from
* node. childIndices should be the index of the removed elements and
* must be sorted in ascending order. And removedChildren should be
* the array of the children objects that were removed.
*/
public void nodesWereRemoved(TreeNode node, int[] childIndices,
Object[] removedChildren) {
if (node != null && childIndices != null) {
fireTreeNodesRemoved(this, getPathToRoot(node), childIndices,
removedChildren);
}
}
/**
* Invoke this method after you've changed how the children identified by
* childIndicies are to be represented in the tree.
*/
public void nodesChanged(TreeNode node, int[] childIndices) {
if (node != null) {
if (childIndices != null) {
int cCount = childIndices.length;
if (cCount > 0) {
Object[] cChildren = new Object[cCount];
for (int counter = 0; counter < cCount; counter++)
cChildren[counter] = node.getChildAt
(childIndices[counter]);
fireTreeNodesChanged(this, getPathToRoot(node),
childIndices, cChildren);
}
}
else if (node == getRoot()) {
fireTreeNodesChanged(this, getPathToRoot(node), null, null);
}
}
}
/**
* Invoke this method if you've totally changed the children of
* node and its childrens children... This will post a
* treeStructureChanged event.
*/
public void nodeStructureChanged(TreeNode node) {
if (node != null) {
fireTreeStructureChanged(this, getPathToRoot(node), null, null);
}
}
}
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