Package com.inductiveautomation.ignition.client.util.gui.tree

Class AbstractAsynchronousTreeNode<T extends TreeNode>

java.lang.Object

com.inductiveautomation.ignition.client.util.gui.tree.AbstractAsynchronousTreeNode<T>

All Implemented Interfaces:

AsynchronousTreeNode, TreeNode

Direct Known Subclasses:

AbstractOPCTreeNode, HistoricalProvidersNode, HistoricalProvidersNode.HistoricalBrowseResultNode

public abstract class AbstractAsynchronousTreeNode<T extends TreeNode>
extends Object
implements AsynchronousTreeNode

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static enum	AbstractAsynchronousTreeNode.LoadingStatus

Field Summary

Fields

Modifier and Type	Field	Description
protected T	errorNode
protected T	loadingNode
protected List<T>	nodeList
protected T	parent
protected DefaultTreeModel	treeModel

Constructor Summary

Constructors

Constructor	Description
AbstractAsynchronousTreeNode(DefaultTreeModel treeModel, T parent)

Method Summary

Modifier and Type	Method	Description
void	blockLoad()	If the children haven't already been loaded, then loads the children of this node synchronously within this call.
protected void	checkChildren(boolean force)
Enumeration	children()
boolean	getAllowsChildren()
T	getChildAt(int idx)
int	getChildCount()
int	getIndex(TreeNode node)
T	getParent()
boolean	isLeaf()
protected abstract List<T>	loadChildren()
protected void	loadDone(List<T> nodeList)
protected void	loadError(Exception ex)
protected abstract T	newErrorNode(Throwable ex)
protected abstract T	newLoadingNode()
void	reload()
protected void	showLoadingError(Exception ex)	Optional override to display a loading error
void	sortChildren(Comparator<T> comparator)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

treeModel

protected DefaultTreeModel treeModel

loadingNode

protected T extends TreeNode loadingNode

errorNode

protected T extends TreeNode errorNode

nodeList

protected List<T extends TreeNode> nodeList

parent

protected T extends TreeNode parent

Constructor Details

AbstractAsynchronousTreeNode

public AbstractAsynchronousTreeNode(DefaultTreeModel treeModel,
 T parent)

Method Details

newLoadingNode

protected abstract T newLoadingNode()

newErrorNode

protected abstract T newErrorNode(Throwable ex)

loadChildren

protected abstract List<T> loadChildren()
                                 throws Exception

Throws:

Exception

loadDone

protected void loadDone(List<T> nodeList)

loadError

protected void loadError(Exception ex)

showLoadingError

protected void showLoadingError(Exception ex)

Optional override to display a loading error

checkChildren

protected void checkChildren(boolean force)

blockLoad

public void blockLoad()

If the children haven't already been loaded, then loads the children of this node synchronously within this call.

Specified by:

blockLoad in interface AsynchronousTreeNode

getChildAt

public T getChildAt(int idx)

Specified by:

getChildAt in interface TreeNode

getParent

public T getParent()

Specified by:

getParent in interface TreeNode

reload

public void reload()

children

public Enumeration children()

Specified by:

children in interface TreeNode

sortChildren

public void sortChildren(Comparator<T> comparator)

getAllowsChildren

public boolean getAllowsChildren()

Specified by:

getAllowsChildren in interface TreeNode

getChildCount

public int getChildCount()

Specified by:

getChildCount in interface TreeNode

getIndex

public int getIndex(TreeNode node)

Specified by:

getIndex in interface TreeNode

isLeaf

public boolean isLeaf()

Specified by:

isLeaf in interface TreeNode