com.vistech.listselect
Class FileBrowser

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--javax.swing.JComponent
                    |
                    +--javax.swing.JPanel
                          |
                          +--com.vistech.listselect.FileBrowser

All Implemented Interfaces:

javax.accessibility.Accessible, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable

public class FileBrowser

extends javax.swing.JPanel

The FileBrowser Class is a JavaBean that creates a embeddable panel to browse local directories. It uses the JTree component to navigate through the file folders and uses JTable to list the files in a directory. When a file is selected, it constructs a ListSelectEvent object with selected filename and the path and sends it to the registered listeners. The receiver of this event can extract this info and use it to load that file, for instance, an Image. Here is an example:

       FileBrowser flBrowser = new FileBrowser();
       flbrowser.addListSelectListener (
            new ListSelectListener() {
                public void load(ListSelectEvent e){
                   File currentDir = e.getPath();
                   String[] flist = e.getFileList();
                    String path =
                    (currentDir !=null)? currentDir.toString()+File.separator+flist[0]:flist[0];
                   if(flist != null) loadImage(path);
                 }
             }

        );
 

Note that the list select event is a custom event defined in the com.vistech.events package. If you are using the Visualization Framework, you can easily connect image loading beans such as ImageLoaderJAI to the FileBrowser bean.

Version:

2.0, 21 Jan 2001

Author:

Lawrence Rodrigues

See Also:

ListSelectListener, ListSelectEvent, Serialized Form

Inner classes inherited from class javax.swing.JPanel

javax.swing.JPanel.AccessibleJPanel

Inner classes inherited from class javax.swing.JComponent

javax.swing.JComponent.AccessibleJComponent

Inner classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent

Field Summary

protected java.lang.String[]	columnNames
protected java.lang.String	curDir
protected java.io.File	currentDir
protected int	currentSortMode
protected javax.swing.JTextField	dirField
protected java.lang.String[][]	fileInfoList
protected javax.swing.JTable	fileInfoTable
protected java.lang.String[]	fileList
protected javax.swing.JTextField	filterField
protected java.lang.String	filterString
protected java.lang.String[]	fString
protected javax.swing.JScrollPane	jsp
protected boolean	multiSelect
protected javax.swing.JCheckBox	multiSelectBox
protected javax.swing.JComboBox	rootBox
protected java.io.File[]	roots
protected int	selectionMode
protected char	separator
static int	SORT_BY_ALPHA
static int	SORT_BY_DATE
protected javax.swing.JComboBox	sortBox
protected static int[]	sortModes
protected static java.lang.String[]	sortModesString
protected java.lang.String	topNode
protected javax.swing.JTree	tree
protected javax.swing.JScrollPane	treeView
protected javax.swing.JButton	upButton

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

FileBrowser()
FileBrowser constructor.

Method Summary

void	addListSelectListener(ListSelectListener il)
protected void	clickToLoad(javax.swing.JTable tb)
protected javax.swing.JTable	createFileInfoTable()
protected javax.swing.JTree	createTreeView()
void	createUI() Creates the UI components and lays them out
protected java.lang.String[]	filterFileNames(java.io.File[] filelist, java.lang.String[] fstr)
protected void	fireListSelectEvent(ListSelectEvent lse)
java.io.File	gePath()
java.lang.String	getFilterString()
boolean	getMultiSelect()
protected void	handleEvents()
static boolean	isDirectory(java.lang.String file)
static java.lang.String[]	listFiles(java.lang.String userDir)
java.lang.String[]	listFilteredFiles(java.lang.String dir, java.lang.String[] filt) Lists the filtered files
static void	main(java.lang.String[] args)
protected javax.swing.JTree	newTreeView(java.lang.String curDir)
void	removeListSelectListener(ListSelectListener il)
void	setFilterString(java.lang.String filter) Sets the filter string.
void	setMultiSelect(boolean multiSelect)
void	setPath(java.io.File path) Sets the path
java.lang.String[][]	sortFileList(java.lang.String curDir, java.lang.String[][] flist, int sortMode)
protected void	updateFilterString(java.lang.String fStr)
protected void	updateTreeView(java.lang.String curDir)

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUIClassID, paramString, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPreferredSize, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getVerifyInputWhenFocusTarget, getVisibleRect, getWidth, getX, getY, grabFocus, hasFocus, hide, isDoubleBuffered, isFocusCycleRoot, isFocusTraversable, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processFocusEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDoubleBuffered, setEnabled, setFont, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getLayout, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setLayout, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getInputContext, getInputMethodRequests, getLocale, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, imageUpdate, inside, isDisplayable, isEnabled, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

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

Field Detail

SORT_BY_DATE

public static final int SORT_BY_DATE

SORT_BY_ALPHA

public static final int SORT_BY_ALPHA

sortModes

protected static int[] sortModes

sortModesString

protected static java.lang.String[] sortModesString

currentSortMode

protected int currentSortMode

multiSelect

protected boolean multiSelect

fileList

protected java.lang.String[] fileList

tree

protected javax.swing.JTree tree

curDir

protected java.lang.String curDir

topNode

protected java.lang.String topNode

currentDir

protected transient java.io.File currentDir

separator

protected char separator

dirField

protected javax.swing.JTextField dirField

filterField

protected javax.swing.JTextField filterField

upButton

protected javax.swing.JButton upButton

filterString

protected java.lang.String filterString

fString

protected java.lang.String[] fString

treeView

protected javax.swing.JScrollPane treeView

selectionMode

protected int selectionMode

fileInfoList

protected java.lang.String[][] fileInfoList

columnNames

protected java.lang.String[] columnNames

fileInfoTable

protected javax.swing.JTable fileInfoTable

roots

protected transient java.io.File[] roots

rootBox

protected javax.swing.JComboBox rootBox

sortBox

protected javax.swing.JComboBox sortBox

multiSelectBox

protected javax.swing.JCheckBox multiSelectBox

jsp

protected javax.swing.JScrollPane jsp

Constructor Detail

FileBrowser

public FileBrowser()

FileBrowser constructor.

Method Detail

setPath

public void setPath(java.io.File path)

Sets the path

Parameters:

the - path.

gePath

public java.io.File gePath()

Returns:

the current directory

setFilterString

public void setFilterString(java.lang.String filter)

Sets the filter string.

Parameters:

filter - the filter string.

getFilterString

public java.lang.String getFilterString()

Returns:

the filter string.

setMultiSelect

public void setMultiSelect(boolean multiSelect)

getMultiSelect

public boolean getMultiSelect()

createUI

public void createUI()

Creates the UI components and lays them out

handleEvents

protected void handleEvents()

updateFilterString

protected void updateFilterString(java.lang.String fStr)

createTreeView

protected javax.swing.JTree createTreeView()

newTreeView

protected javax.swing.JTree newTreeView(java.lang.String curDir)

updateTreeView

protected void updateTreeView(java.lang.String curDir)

createFileInfoTable

protected javax.swing.JTable createFileInfoTable()

clickToLoad

protected void clickToLoad(javax.swing.JTable tb)

listFilteredFiles

public java.lang.String[] listFilteredFiles(java.lang.String dir,
                                            java.lang.String[] filt)

Lists the filtered files

Parameters:

dir - the current directory.

filt - the array containing list of file extendsions.

Returns:

the array containing the list of files.

filterFileNames

protected java.lang.String[] filterFileNames(java.io.File[] filelist,
                                             java.lang.String[] fstr)

listFiles

public static java.lang.String[] listFiles(java.lang.String userDir)

isDirectory

public static boolean isDirectory(java.lang.String file)

sortFileList

public java.lang.String[][] sortFileList(java.lang.String curDir,
                                         java.lang.String[][] flist,
                                         int sortMode)

addListSelectListener

public void addListSelectListener(ListSelectListener il)

removeListSelectListener

public void removeListSelectListener(ListSelectListener il)

fireListSelectEvent

protected void fireListSelectEvent(ListSelectEvent lse)

main

public static void main(java.lang.String[] args)