wjhk.jupload2.gui
Class JUploadFileView

java.lang.Object
  javax.swing.filechooser.FileView
      wjhk.jupload2.gui.JUploadFileView

All Implemented Interfaces:

PropertyChangeListener, ThreadFactory, EventListener

public class JUploadFileView
extends FileView
implements PropertyChangeListener, ThreadFactory

This class provides the icon view for the file selector.

Author:

etienne_sf

Field Summary

static ImageIcon	emptyIcon An empty icon, having the good file size.
(package private) ExecutorService	executorService This executor will crate icons from files, one at a time.
(package private) JFileChooser	fileChooser The current file chooser.
(package private) ConcurrentHashMap<String,IconWorker>	hashMap This map will contain all instances of IconWorker.
(package private) ThreadGroup	iconWorkerThreadGroup This thread group is used to contain all icon worker threads.
(package private) UploadPolicy	uploadPolicy The current upload policy.

Constructor Summary

JUploadFileView(UploadPolicy uploadPolicy, JFileChooser fileChooser)
Creates a new instance.

Method Summary

(package private) void	execute(IconWorker iconWorker)
String	getDescription(File f) #see javax.swing.filechooser.FileView#getDescription(File))
Icon	getIcon(File file) The fileChooserIconFromFileContent applet parameter defies which icon is to be returned here.
String	getName(File f) #see FileView.getName(File)
String	getTypeDescription(File f) #see FileView.getTypeDescription(File)
Boolean	isTraversable(File f) #see FileView.isTraversable(File)
Thread	newThread(Runnable runnable) Implementation of ThreadFactory.
void	propertyChange(PropertyChangeEvent e) Waiting for JFileChooser events.
void	shutdownNow() Stop all current and to come thread.

Methods inherited from class java.lang.Object

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

Field Detail

iconWorkerThreadGroup

ThreadGroup iconWorkerThreadGroup

This thread group is used to contain all icon worker threads. Its priority is the MIN_PRIORITY, to try to minimize CPU footprint. Its thread max priority is set in the JUploadFileView(UploadPolicy, JFileChooser) constructor.

uploadPolicy

UploadPolicy uploadPolicy

The current upload policy.

fileChooser

JFileChooser fileChooser

The current file chooser.

hashMap

ConcurrentHashMap<String,IconWorker> hashMap

This map will contain all instances of IconWorker.

executorService

ExecutorService executorService

This executor will crate icons from files, one at a time. It is used to create these icon asynchronously.

See Also:

execute(IconWorker)

emptyIcon

public static ImageIcon emptyIcon

An empty icon, having the good file size.

Constructor Detail

JUploadFileView

public JUploadFileView(UploadPolicy uploadPolicy,
                       JFileChooser fileChooser)

Creates a new instance.

Parameters:

uploadPolicy - The upload policy to apply.

fileChooser - The desired file chooser to use.

Method Detail

execute

void execute(IconWorker iconWorker)

shutdownNow

public void shutdownNow()

Stop all current and to come thread. To be called when the file chooser is closed.

propertyChange

public void propertyChange(PropertyChangeEvent e)

Waiting for JFileChooser events. Currently managed: DIRECTORY_CHANGED_PROPERTY, to stop the to be loaded icons.

Specified by:

propertyChange in interface PropertyChangeListener

Parameters:

e -

getDescription

public String getDescription(File f)

#see javax.swing.filechooser.FileView#getDescription(File))

Overrides:

getDescription in class FileView

getIcon

public Icon getIcon(File file)

The fileChooserIconFromFileContent applet parameter defies which icon is to be returned here.

Overrides:

getIcon in class FileView

See Also:

FileView.getIcon(java.io.File), UploadPolicy.PROP_FILE_CHOOSER_ICON_FROM_FILE_CONTENT

getName

public String getName(File f)

#see FileView.getName(File)

Overrides:

getName in class FileView

getTypeDescription

public String getTypeDescription(File f)

#see FileView.getTypeDescription(File)

Overrides:

getTypeDescription in class FileView

isTraversable

public Boolean isTraversable(File f)

#see FileView.isTraversable(File)

Overrides:

isTraversable in class FileView

newThread

public Thread newThread(Runnable runnable)

Implementation of ThreadFactory. Creates a thread in the iconWorkerThreadGroup thread group. This thread group has the lower available priority.

Specified by:

newThread in interface ThreadFactory

Parameters:

runnable - The runnable instance to start.

Returns:

The newly created thread