wjhk.jupload2.gui.filepanel.treeview

Class FileDataTreeViewModel

java.lang.Object

wjhk.jupload2.gui.filepanel.treeview.MyAbstractTreeTableModel<TreeFileDataNode>

wjhk.jupload2.gui.filepanel.treeview.FileDataTreeViewModel

All Implemented Interfaces:

TreeModel, MyTreeTableModel<TreeFileDataNode>

public class FileDataTreeViewModel
extends MyAbstractTreeTableModel<TreeFileDataNode>

This code is taken from the tutorial written by Jörn Hameister, available here.

In the class MyDataModel the concrete data model view is defined. Ie, the columns are defined including data type. The class also contains the unimplemented methods of the interface TreeModel . It should be noted the method isCellEditable . This has the value true return so that the Listener on a treeExpanded or treeCollapsed can respond. One could in this method only for the first column ( column ) the value true and otherwise return the value false .

Author:

Jörn Hameister

Field Summary

Fields inherited from class wjhk.jupload2.gui.filepanel.treeview.MyAbstractTreeTableModel

absoluteRoot, listenerList, visibleRoot

Constructor Summary

Constructors

Constructor and Description
FileDataTreeViewModel(UploadPolicy uploadPolicy, FilePanelFlatDataModel2 flatModel)

Method Summary

Modifier and Type	Method and Description
int	attachObject(Object o) This method searches in the hierarchy of files and folder to upload, the node which contains this file.
Class<?>	getColumnClass(int column) Returns the type (class) of a column.
int	getColumnCount() Returns the number of available columns.
String	getColumnName(int column) Returns the column name.
int	getColumnSizePercentage(int col) Retrieves the default colum percentage size of a column, that is: its percentage of the available width.
TreePath	getTreePathForObject(Object o) Get the TreePath for the given object.
TreePath	getTreePathFromFile(File file, boolean createIntermediateNode) Returns the TreePath for the given File.
Object	getValueAt(TreeFileDataNode node, int column) Returns the value of a node in a column.
boolean	isCellEditable(TreeFileDataNode node, int column) Check if a cell of a node in one column is editable.
void	setValueAt(Object aValue, TreeFileDataNode node, int col) Sets a value for a node in one column.

Methods inherited from class wjhk.jupload2.gui.filepanel.treeview.MyAbstractTreeTableModel

addTreeModelListener, cleanHierarchy, cleanHierarchy, fireTreeNodesChanged, fireTreeNodesInserted, fireTreeNodesRemoved, fireTreeStructureChanged, getAbsoluteRoot, getChild, getChildCount, getIndexOfChild, getRoot, getTree, getTreePath, isLeaf, reload, reload, remove, removeAndClean, removeTreeModelListener, setRoot, setTree, valueForPathChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

FileDataTreeViewModel

public FileDataTreeViewModel(UploadPolicy uploadPolicy,
                             FilePanelFlatDataModel2 flatModel)

Method Detail

getColumnCount

public int getColumnCount()

Returns the number of available columns.

Returns:

Number of Columns

getColumnName

public String getColumnName(int column)

Returns the column name.

Parameters:

column - Column number

Returns:

Column name

getColumnSizePercentage

public int getColumnSizePercentage(int col)

Retrieves the default colum percentage size of a column, that is: its percentage of the available width.

Parameters:

col - The index of the column to query.

Returns:

the default size of the requested column.

getColumnClass

public Class<?> getColumnClass(int column)

Returns the type (class) of a column.

Parameters:

column - Column number

Returns:

Class

getValueAt

public Object getValueAt(TreeFileDataNode node,
                         int column)

Returns the value of a node in a column.

Specified by:

getValueAt in interface MyTreeTableModel<TreeFileDataNode>

Specified by:

getValueAt in class MyAbstractTreeTableModel<TreeFileDataNode>

Parameters:

node - Node

column - Column number

Returns:

Value of the node in the column

isCellEditable

public boolean isCellEditable(TreeFileDataNode node,
                              int column)

Description copied from interface: MyTreeTableModel

Check if a cell of a node in one column is editable.

Parameters:

node - Node

column - Column number

Returns:

true/false

See Also:

TableModel.isCellEditable(int, int)

setValueAt

public void setValueAt(Object aValue,
                       TreeFileDataNode node,
                       int col)

Description copied from interface: MyTreeTableModel

Sets a value for a node in one column.

Parameters:

aValue - New value

node - Node

col - Column number

See Also:

TableModel.setValueAt(Object, int, int)

getTreePathFromFile

public TreePath getTreePathFromFile(File file,
                                    boolean createIntermediateNode)
                             throws JUploadExceptionStopAddingFiles

Returns the TreePath for the given File. This TreePath is basically the array of TreeFileDataNode, representing the given file. the root path if the filename for the RootNode, that is: the empty String: ""

Parameters:

fileRoot - The File we want the path for. It may be the root, a folder, leaf... If the given file is null, the returned TreePath is a one level TreePath, containing only the absolute root of the tree view.

createIntermediateNode - If true, all missing intermediate nodes are created. If false, no node are created. In this last case, the returned TreePath is null, if one or mode nodes are missing.

Returns:

The TreePath for this file, or null if this file doesn't exist in the existing hierarchy.

Throws:

JUploadExceptionStopAddingFiles

attachObject

public int attachObject(Object o)
                 throws NullPointerException,
                        IllegalArgumentException,
                        JUploadExceptionStopAddingFiles

This method searches in the hierarchy of files and folder to upload, the node which contains this file. If this node doesn't exist, it is first created and attached into the hierarchy.

Parameters:

o - A File or Folder. If o is a file, it will just be added. If o is a folder, it will be added, including all its content (child, grand-child...)

Returns:

The number of files added to the hierarchy. Folders are not counted.

Throws:

JUploadExceptionStopAddingFiles - When an exception occurs

NullPointerException - When o is null

IllegalArgumentException - When o is not a File

See Also:

MyAbstractTreeTableModel

getTreePathForObject

public TreePath getTreePathForObject(Object o)

Get the TreePath for the given object. This method is optional. It is typically only applicable if this hierarchy maps on another hierarchy (for instance a hierarchy of files, based on a local file system)

Returns:

The TreePath, with the last component being the node linked to the o object. It returns null, if this object is not in the hierarchy.