/** Gets the value for the given node at the given column. */
public Object getValueAt(Object node, int col) {
DefaultMutableTreeNode tree_node = (DefaultMutableTreeNode) node;
Object value = tree_node.getUserObject();
switch (col) {
// Name
case 0:
return value;
// Value
case 1:
if (value instanceof ConfigElement) {
return null;
} else if (value instanceof PropertyDefinition) {
// Only provide comma delimited editing for simple types
if (((PropertyDefinition) value).getType() != ConfigElement.class) {
StringBuffer buffer = new StringBuffer();
for (Enumeration e = tree_node.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode child_node = (DefaultMutableTreeNode) e.nextElement();
buffer.append(child_node.getUserObject());
if (e.hasMoreElements()) {
buffer.append(", ");
}
}
return buffer.toString();
}
return null;
}
return value;
}
return null;
}
/**
* This gets called whenever one of the ConfigElements we are editing removes a property value.
*/
public void propertyValueRemoved(ConfigElementEvent evt) {
ConfigElement src = (ConfigElement) evt.getSource();
int idx = evt.getIndex();
PropertyDefinition prop_def = src.getDefinition().getPropertyDefinition(evt.getProperty());
DefaultMutableTreeNode elt_node = getNodeFor(src);
// Get the node containing the property description under the source
// ConfigElement node
for (Enumeration e = elt_node.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
if (node.getUserObject().equals(prop_def)) {
// The newly removed property value must be a child to this node
System.out.println("Removing child " + idx + " from node: " + node.getUserObject());
DefaultMutableTreeNode child = (DefaultMutableTreeNode) node.getChildAt(idx);
// If the child is an embedded element, stop listening to it
if (child.getUserObject() instanceof ConfigElement) {
ConfigElement removed_elt = (ConfigElement) child.getUserObject();
removed_elt.removeConfigElementListener(this);
}
// Physically remove the child from the tree
removeNodeFromParent(child);
}
}
}
/**
* This gets called whenever one of the ConfigElements we are editing adds a new property value.
*/
public void propertyValueAdded(ConfigElementEvent evt) {
ConfigElement src = (ConfigElement) evt.getSource();
int idx = evt.getIndex();
PropertyDefinition prop_def = src.getDefinition().getPropertyDefinition(evt.getProperty());
DefaultMutableTreeNode elt_node = getNodeFor(src);
// Get the node containing the property description under the source
// ConfigElement node
for (Enumeration e = elt_node.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
if (node.getUserObject().equals(prop_def)) {
// The newly inserted property value must be added as a child to
// this node
if (prop_def.getType() != ConfigElement.class) {
DefaultMutableTreeNode new_child = new DefaultMutableTreeNode(evt.getValue());
insertNodeInto(new_child, node, idx);
} else {
// Embedded elements are handled specially in that all of their
// respective child properties and such also need to be added to
// the tree at this time.
addEmbeddedElement(node, (ConfigElement) evt.getValue(), idx);
}
}
}
}
/** Clears the data in the model. */
private void clear() {
// Stop listening to all config elements in the tree
List nodes = getNodesOfClass(ConfigElement.class);
for (Iterator itr = nodes.iterator(); itr.hasNext(); ) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) itr.next();
ConfigElement elt = (ConfigElement) node.getUserObject();
elt.removeConfigElementListener(mElementListener);
}
// Clear out all the old nodes from the tree.
((DefaultMutableTreeNode) getRoot()).removeAllChildren();
}
/** Indicates whether the value for the given node at the given column is editable. */
public boolean isCellEditable(Object node, int col) {
// The tree column has to be editable so it can get the events
if (col == 0) {
return true;
}
DefaultMutableTreeNode tree_node = (DefaultMutableTreeNode) node;
Object value = tree_node.getUserObject();
// config elements nodes are not editable
if (value instanceof ConfigElement) {
return false;
} else {
return true;
}
}
/**
* Gets a list of the nodes in this model that contain an object of the given class starting with
* the given node.
*
* @param cls the class to search for
* @param node the node whose subtree will be searched
* @return a list of matching DefaultMutableTreeNodes
*/
public List getNodesOfClass(Class cls, DefaultMutableTreeNode node) {
List matches = new ArrayList();
// Check if the current node matches
if (cls.isInstance(node.getUserObject())) {
matches.add(node);
}
// Recurse to the children of the current node
for (Enumeration e = node.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode child = (DefaultMutableTreeNode) e.nextElement();
matches.addAll(getNodesOfClass(cls, child));
}
return matches;
}
/**
* This gets called whenever one of the ConfigElements we are editing has the values of a
* property get reordered.
*/
public void propertyValueOrderChanged(ConfigElementEvent evt) {
ConfigElement src = (ConfigElement) evt.getSource();
int idx = evt.getIndex();
PropertyDefinition prop_def = src.getDefinition().getPropertyDefinition(evt.getProperty());
DefaultMutableTreeNode elt_node = getNodeFor(src);
// Get the node containing the property description under the source
// ConfigElement node.
for (Enumeration e = elt_node.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
if (node.getUserObject().equals(prop_def)) {
int start_index = Math.min(evt.getIndex0(), evt.getIndex1());
int end_index = Math.max(evt.getIndex0(), evt.getIndex1());
List removed_children = new ArrayList();
for (int c = start_index; c <= end_index; ++c) {
removed_children.add(getChild(node, c));
}
for (Iterator c = removed_children.iterator(); c.hasNext(); ) {
removeNodeFromParent((MutableTreeNode) c.next());
}
String prop_token = prop_def.getToken();
for (int v = start_index; v <= end_index; ++v) {
if (prop_def.getType() != ConfigElement.class) {
// Create a new node for the reordered property value.
DefaultMutableTreeNode new_node =
new DefaultMutableTreeNode(src.getProperty(prop_token, v));
// Add the new node into the tree.
insertNodeInto(new_node, node, v);
} else {
// Embedded elements are handled specially in that all of
// their respective child properties and such also need to
// be added to the tree at this time.
ConfigElement cur_value = (ConfigElement) src.getProperty(prop_token, v);
addEmbeddedElement(node, cur_value, v);
}
}
}
}
}
/** Gets the node for the given object */
private DefaultMutableTreeNode getNodeFor(Object obj, DefaultMutableTreeNode node) {
// System.out.println("getNodeFor() node: " + node.getUserObject());
// Check if we found a match
if (obj.equals(node.getUserObject())) {
return node;
}
// Check all children of the current node
for (Enumeration e = node.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode child = (DefaultMutableTreeNode) e.nextElement();
DefaultMutableTreeNode result = getNodeFor(obj, child);
if (result != null) {
return result;
}
}
// Didn't find anything :(
return null;
}
/**
* This gets called whenever one of the ConfigElements we are editing has one of its property
* values change.
*/
public void propertyValueChanged(ConfigElementEvent evt) {
ConfigElement src = (ConfigElement) evt.getSource();
int idx = evt.getIndex();
PropertyDefinition prop_def = src.getDefinition().getPropertyDefinition(evt.getProperty());
DefaultMutableTreeNode elt_node = getNodeFor(src);
// Multi-valued properties and embedded elements are treated specially
if ((prop_def.getPropertyValueDefinitionCount() > 1)
|| (prop_def.isVariable())
|| (prop_def.getType() == ConfigElement.class)) {
// Look for the property definition node
for (Enumeration e = elt_node.children(); e.hasMoreElements(); ) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) e.nextElement();
if (node.getUserObject().equals(prop_def)) {
DefaultMutableTreeNode child = (DefaultMutableTreeNode) node.getChildAt(idx);
fireTreeNodesChanged(
this,
new Object[] {getPathToRoot(node)},
new int[] {node.getIndex(child)},
new Object[] {child});
}
}
}
// Property value is not an embedded element
else {
// Take into account the extra two rows at the top of the table
if (elt_node == getRoot()) {
idx += 2;
}
fireTreeNodesChanged(
this,
new Object[] {getPathToRoot(elt_node)},
new int[] {idx},
new Object[] {elt_node.getChildAt(idx)});
}
}
/** Sets the value for the given node at the given column to the given value. */
public void setValueAt(Object value, Object node, int col) {
DefaultMutableTreeNode tree_node = (DefaultMutableTreeNode) node;
Object node_value = tree_node.getUserObject();
switch (col) {
// Name (not supported)
case 0:
break;
// Value
case 1:
DefaultMutableTreeNode parent_node = (DefaultMutableTreeNode) tree_node.getParent();
// First child of root is always the element name
if (parent_node == getRoot() && parent_node.getIndex((TreeNode) node) == 0) {
ConfigElement elt = (ConfigElement) parent_node.getUserObject();
elt.setName((String) value);
tree_node.setUserObject(value);
} else if (node_value instanceof PropertyDefinition) {
// Hey, we're editing a property definition. If it's type is not a
// configuration element, we're probably editing a summary list of
// the valuesof the children.
if (((PropertyDefinition) node_value).getType() != ConfigElement.class) {
ConfigElement elt = (ConfigElement) parent_node.getUserObject();
PropertyDefinition prop_def = (PropertyDefinition) node_value;
StringTokenizer tokenizer = new StringTokenizer((String) value, ", ");
int idx = 0;
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();
// Make sure we don't overrun the property values
if ((idx >= prop_def.getPropertyValueDefinitionCount()) && (!prop_def.isVariable())) {
break;
}
// Convert the value to the appropriate type
Object new_value = null;
Class type = prop_def.getType();
if (type == Boolean.class) {
new_value = new Boolean(token);
} else if (type == Integer.class) {
new_value = new Integer(token);
} else if (type == Float.class) {
new_value = new Float(token);
} else if (type == String.class) {
new_value = new String(token);
} else if (type == ConfigElementPointer.class) {
new_value = new ConfigElementPointer(token);
}
setProperty(new_value, elt, prop_def.getToken(), idx);
// Get the node for the current property value and update it
if (idx < tree_node.getChildCount()) {
DefaultMutableTreeNode child_node =
(DefaultMutableTreeNode) tree_node.getChildAt(idx);
child_node.setUserObject(new_value);
} else {
// Insert the new property
DefaultMutableTreeNode new_node = new DefaultMutableTreeNode(new_value);
tree_node.add(new_node);
fireTreeNodesInserted(
this,
new Object[] {getPathToRoot(tree_node)},
new int[] {tree_node.getIndex(new_node)},
new Object[] {new_node});
}
++idx;
}
}
} else {
// Parent is a ConfigElement ... must be a single-valued property
if (parent_node.getUserObject() instanceof ConfigElement) {
ConfigElement elt = (ConfigElement) parent_node.getUserObject();
int desc_idx = parent_node.getIndex(tree_node);
// If the parent is the root, take into account the extra name
// and type nodes
if (parent_node == getRoot()) {
desc_idx -= 2;
}
PropertyDefinition prop_def =
(PropertyDefinition) elt.getDefinition().getPropertyDefinitions().get(desc_idx);
setProperty(value, elt, prop_def.getToken(), 0);
tree_node.setUserObject(value);
} else {
// Parent must be a PropertyDefinition
PropertyDefinition prop_def = (PropertyDefinition) parent_node.getUserObject();
int value_idx = parent_node.getIndex(tree_node);
DefaultMutableTreeNode elt_node = (DefaultMutableTreeNode) parent_node.getParent();
ConfigElement elt = (ConfigElement) elt_node.getUserObject();
setProperty(value, elt, prop_def.getToken(), value_idx);
tree_node.setUserObject(value);
}
}
fireTreeNodesChanged(
this,
new Object[] {getPathToRoot(parent_node)},
new int[] {parent_node.getIndex(tree_node)},
new Object[] {tree_node});
break;
default:
throw new IllegalArgumentException("Invalid column: " + col);
}
}