ExpansionHandler (Jadex Active Component Platform 4.0.177 API)

java.lang.Object
- jadex.commons.gui.TreeExpansionHandler
- - jadex.base.gui.filetree.ExpansionHandler

All Implemented Interfaces:

java.util.EventListener, javax.swing.event.TreeExpansionListener, javax.swing.event.TreeModelListener
```
public class ExpansionHandler
extends TreeExpansionHandler
```
Handles all aspects (e.g. expansion, selection) of the tree that have to happen in background as the refresher thread adds/removes nodes.

Field Summary

Fields
Modifier and Type	Field	Description
`protected java.util.Set`	`expandedpaths`	The expanded node paths.
`protected NodePath`	`lastselectedpath`	The node that was selected before the current project was last saved.

Fields inherited from class jadex.commons.gui.TreeExpansionHandler
expanded, tree

Constructor Summary

Constructors
Constructor Description

ExpansionHandler(javax.swing.JTree tree)
Create a new tree handler.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected IFuture`	`handlePath(javax.swing.tree.TreePath path)`	Check if an action (e.g. expand) has to be performed on the path.
`boolean`	`isExpanded(javax.swing.tree.TreePath path)`	Test if a path is expanded or should be.
`protected java.lang.Object[]`	`resolveNodePath(NodePath nodepath)`	Get the node and treepath for a nodepath.
`void`	`setExpandedPaths(NodePath[] paths)`	Set the expanded paths.
`void`	`setSelectedPath(NodePath path)`	Set the selected path.

Methods inherited from class jadex.commons.gui.TreeExpansionHandler
handleTreeStructureChanged, isTreeExpanded, treeCollapsed, treeExpanded, treeNodesChanged, treeNodesInserted, treeNodesRemoved, treeStructureChanged

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - lastselectedpath
```
protected NodePath lastselectedpath
```
    The node that was selected before the current project was last saved.
  - expandedpaths
```
protected java.util.Set expandedpaths
```
    The expanded node paths.
- Constructor Detail
  - ExpansionHandler
```
public ExpansionHandler(javax.swing.JTree tree)
```
    Create a new tree handler.
- Method Detail
  - setSelectedPath
```
public void setSelectedPath(NodePath path)
```
    Set the selected path.
  - setExpandedPaths
```
public void setExpandedPaths(NodePath[] paths)
```
    Set the expanded paths.
  - handlePath
```
protected IFuture handlePath(javax.swing.tree.TreePath path)
```
    Check if an action (e.g. expand) has to be performed on the path.
    
    Overrides:
    
    handlePath in class TreeExpansionHandler
  - resolveNodePath
```
protected java.lang.Object[] resolveNodePath(NodePath nodepath)
```
    Get the node and treepath for a nodepath.
    
    Parameters:
    
    nodepath - The node path.
    
    Returns:
    
    An object array containing the node [0] and the tree path [1] or null if not found.
  - isExpanded
```
public boolean isExpanded(javax.swing.tree.TreePath path)
```
    Test if a path is expanded or should be.
    
    Overrides:
    
    isExpanded in class TreeExpansionHandler